CN115789729B

CN115789729B - UV petticoat pipe

Info

Publication number: CN115789729B
Application number: CN202211520598.8A
Authority: CN
Inventors: 许宏武
Original assignee: Ningbo Huanfeng Fire Fighting Technology Co ltd
Current assignee: Ningbo Huanfeng Fire Fighting Technology Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-08-04
Anticipated expiration: 2042-11-30
Also published as: CN115789729A

Abstract

The invention discloses a UV smoke hood, which comprises a smoke hood body, wherein a plurality of smoke suction openings are equidistantly arranged at the bottom of the smoke hood body, a cavity communicated with the smoke suction openings is arranged on the smoke hood body, and the cross section of the cavity is funnel-shaped; the utility model discloses a smoke exhaust ventilator, including cavity internally mounted, sealing frame top, this UV petticoat pipe, through even gas spare and the UV lamp subassembly that just be located filtering mechanism and be equipped with in the sealing frame, thereby not only can make the effect of the gaseous evenly distributed after entering into the sealing frame and filtering, make gaseous and first ultraviolet lamp and second ultraviolet lamp carry out abundant contact simultaneously, realize carrying out abundant effect of decomposition to the organic matter that contains in the oil smoke, simultaneously under the more circumstances of oil smoke volume, this even gas subassembly plays the effect of transit to the oil smoke, simultaneously through the third ultraviolet lamp that is equipped with, thereby further play the effect of carrying out abundant decomposition to more oil smoke, further assurance oil smoke pipe exhaust gas cleanliness factor.

Description

UV petticoat pipe

Technical Field

The invention relates to the technical field of kitchen ware, in particular to a UV smoke hood.

Background

UV lamps are short for ultraviolet light tubes, UV is an english abbreviation for ultraviolet (Ultra-Violet Ray). The lamp tube is mainly used for carrying out photochemical reaction, product curing, sterilization, disinfection, medical examination and the like by utilizing the characteristics of ultraviolet rays.

In the food industry, the oil smoke generated by frying, baking and the like is generally sucked by a range hood and then discharged outwards, and the traditional mode is to directly discharge the oil smoke to the external atmosphere without a purification process. Along with the increasing requirements of people on environmental protection, the mode of purifying and then discharging the oil smoke by ultraviolet light is also becoming more and more popular in the field of kitchen ware, especially in the field of commercial kitchen ware. The general UV (ultraviolet) photolysis petticoat pipe includes filter screen, ultraviolet fluorescent tube and exhaust equipment, and exhaust equipment is with the back of oil smoke top suction or side suction, and the oil smoke is first through the filter screen, is held back and disperses, and through the irradiation of ultraviolet light, and the oil smoke is "cold combustion", generates trace powder and carbon dioxide and water, and organic matter in the oil smoke is also by photolysis oxidation, reaches environmental protection emission standard, and the peculiar smell in the flue also can be dispelled thereupon.

At present, the existing UV fume hood is provided with a UV lamp tube in the fume hood, and the ultraviolet light of the UV lamp tube can decompose organic matters in fume, so that the organic fume in the air can be decomposed into carbon and water under the condition that the energy of the light of the ultraviolet lamp is enough; however, when more oil smoke is generated by frying, frying and frying, the oil smoke is too large, the ultraviolet light power is insufficient, and more oil smoke is difficult to completely decompose; although current UV petticoat pipe is because the ultraviolet ray can not enough decompose the oil smoke, so set up two-layer filter screen, filter the oil smoke of great granule, and along with the filtration capacity of filter screen is stronger, the resistance is bigger, consequently leads to the wind speed of UV petticoat pipe and the dynamics of oil extraction cigarette relatively poor, for this reason, we propose a UV petticoat pipe.

Disclosure of Invention

The invention aims to provide a UV smoke hood to solve the problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: the smoke exhaust hood comprises a smoke hood body, wherein a plurality of smoke exhaust openings are formed in the bottom of the smoke hood body at equal intervals, a cavity communicated with the smoke exhaust openings is formed in the smoke hood body, and the cross section of the cavity is funnel-shaped;

a sealing frame is arranged in the cavity, the top of the sealing frame is connected with a smoke suction cover, and the top of the smoke suction cover is connected with a smoke tube;

the sealing frame also comprises:

the filtering mechanism is used for reducing the resistance of the oil smoke entering the sealing frame from the smoke suction port and assisting in filtering the oil smoke; a kind of electronic device with high-pressure air-conditioning system

The air homogenizing component enables the filtered air to uniformly enter the top end inside the sealing frame; a kind of electronic device with high-pressure air-conditioning system

And the UV lamp assembly is matched with the air homogenizing assembly, and the oil smoke entering the sealing frame is fully decomposed and then discharged from the oil smoke pipe.

Preferably, the filtering mechanism comprises a first filtering screen plate and a second filtering screen plate which are respectively arranged at the bottom of the sealing frame, and the first filtering screen plate is positioned at the bottom of the second filtering screen plate;

the section of the first filter screen plate is arc-shaped;

the cross section of the second filter screen plate is wave-shaped, and the diameter of the mesh holes of the first filter screen plate is larger than that of the second filter screen plate;

the bottom of the second filter screen plate is provided with an air inducing mechanism for guiding out air flow.

Preferably, the air inducing mechanism comprises a supporting seat which is equidistantly arranged at the center of the bottom of the second filter screen plate, and a connecting rod is arranged at the bottom of the supporting seat;

the connecting rod bottom rotates and is connected with the connection pad, and the connection pad outside equidistance encircles there is a plurality of flabellums, through the induced air mechanism that is equipped with to can be with the even effect of water conservancy diversion of gas.

Preferably, the air homogenizing component comprises an air homogenizing block which is arranged in the sealing frame and is formed by the top of the second filter screen plate, and the cross section of the air homogenizing block is in an inverted triangle shape;

the air homogenizing block is provided with an S-shaped guide groove, the filtered air flows into the smoke suction hood through the guide groove, the air homogenizing block is also provided with an air inlet groove communicated with the guide groove, and the guide groove is matched with the air inlet groove, so that the filtered air enters the guide groove from the inclined planes at two sides of the air homogenizing block;

the guiding gutter is three with the separation of air inlet groove with even gas piece and holds the piece, and installs the well piece that is used for holding more flue gas in the three holding piece, through the even gas subassembly that is equipped with to can be with gaseous evenly distributed in sealed frame.

Preferably, the accommodating block is provided with an accommodating groove corresponding to the position of the transfer piece, one side of the accommodating groove, which is close to the inside of the sealing frame, is provided with a plurality of air inlets, and sealing pieces are arranged at the positions of the plurality of air inlets;

the sealing groove is internally provided with a connecting plate for connecting a plurality of sealing elements, two ends of the connecting plate are respectively fixedly connected with connecting rods, and the two connecting rods are fixedly arranged in the accommodating groove;

and an air outlet piece is arranged on one side of the containing block, which is close to the diversion trench.

Preferably, the sealing piece comprises rubber plugs respectively connected with the air inlet holes in a matched mode, a circular plate is fixedly connected to the top of the rubber plug, and a supporting rod is fixedly connected to the top of the circular plate;

the top of the supporting rod penetrates through the connecting plate and is fixedly connected with a limiting plate;

the supporting springs are sleeved outside the supporting rods, two ends of each supporting spring are fixedly connected with the circular plate and the connecting plate respectively, and the sealing piece is arranged to seal the air inlet hole.

Preferably, a pressure sensor is mounted on the circular plate, one end of a supporting spring at the circular plate is connected with the pressure sensor, and the pressure sensor is arranged to detect the position of the circular plate.

Preferably, the piece of giving vent to anger is including setting up on holding the piece and with the a plurality of ventholes of holding tank intercommunication, and the end of giving vent to anger of a plurality of ventholes towards the guiding gutter, the honeycomb duct is installed to the venthole inboard, and installs the check valve on the honeycomb duct, through the piece of giving vent to anger that is equipped with to can be with the gaseous exhaust effect in the holding tank.

Preferably, the UV lamp assembly comprises a plurality of first ultraviolet lamps arranged in an S-shaped diversion trench, the first ultraviolet lamps are on the same Y-axis straight line, and a second ultraviolet lamp is arranged below the conical end at the bottom of the air homogenizing block;

and the plurality of accommodating grooves are internally provided with third ultraviolet lamps, and the effect of fully decomposing the lampblack is realized through the UV lamp assembly.

The invention has at least the following beneficial effects:

1. when the smoke exhaust ventilator is used, the sealing frame is arranged in the smoke hood body, the filtering mechanism is arranged at the bottom of the sealing frame, so that the effective filtering of smoke particles can be ensured, the resistance of smoke flowing is reduced, and meanwhile, in the process that the smoke passes through the first filter screen plate and the second filter screen plate, the action of smoke flowing is assisted again through the plurality of rotating fans, and the smoke exhaust intensity is further improved;

2. when the smoke exhaust ventilator is used, the gas homogenizing piece and the UV lamp assembly are arranged in the sealing frame and positioned on the filtering mechanism, so that the filtered gas entering the sealing frame can be uniformly distributed, the gas can be fully contacted with the first ultraviolet lamp and the second ultraviolet lamp, the effect of fully decomposing organic matters contained in smoke is realized, meanwhile, when the smoke exhaust ventilator is more in quantity, the gas homogenizing piece plays a role of transferring the smoke, and meanwhile, the third ultraviolet lamp is arranged, so that the effect of fully decomposing more smoke is further realized, and the cleanliness of the gas exhausted by the smoke exhaust ventilator is further ensured.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the hood body according to the present invention;

FIG. 3 is a schematic view of the internal structure of the seal frame of the present invention;

FIG. 4 is a schematic diagram of the internal side view of the hood body of the present invention;

FIG. 5 is a schematic view of a gas block structure according to the present invention;

FIG. 6 is a schematic diagram of a side cross-sectional structure of a gas block according to the present invention;

FIG. 7 is a schematic view of the seal structure of the present invention;

FIG. 8 is a schematic view of a UV lamp assembly according to the present invention;

FIG. 9 is a schematic view of a first screen panel and a second screen panel according to the present invention;

fig. 10 is a schematic diagram of a third structure of an embodiment of the present invention.

In the figure: 1-a fume hood body; 11-smoking mouth; 12-a cavity; 2-a sealing frame; 3-smoke suction hood; 31-a fume tube; 4-a filtering mechanism; 41-a first screen panel; 42-a second screen panel; 5-homogenizing component; 51-homogenizing block; 52-diversion trenches; 53-accommodating the block; 531-receiving grooves; 532-an air inlet hole; 533-connecting plate; 54-air outlet piece; 541-an air outlet hole; 542-a draft tube; a 6-UV lamp assembly; 61-a first ultraviolet lamp; 62-a second ultraviolet lamp; 63-a third ultraviolet lamp; 7-an induced draft mechanism; 71-a supporting seat; 72-connecting rods; 721-clamping the rod; 722-clamping blocks; 723-a buffer spring; 73-connecting plates; 74-fan blades; 8-a transfer piece; 9-a seal; 91-a rubber stopper; 92-supporting rods; 93-circular plate; 931-a pressure sensor; 94-limiting plate.

Description of the embodiments

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-9, the present invention provides a technical solution:

examples

The utility model provides a UV petticoat pipe, including petticoat pipe body 1, and can also install display panel on the petticoat pipe body 1 in this application, and petticoat pipe body 1 internally mounted control circuit board, thereby through controlling display panel, further realization carries out operation such as switch to petticoat pipe body 1, petticoat pipe body 1 bottom equidistance is equipped with a plurality of smoke absorbing mouths 11, petticoat pipe body 1 corresponds smoke absorbing mouths 11 department and sets up for the slope shape, thereby the oil smoke of being convenient for gets into petticoat pipe body 1 inside cavity 12 department by a plurality of smoke absorbing mouths 11 department, be equipped with on the petticoat pipe body 1 with a plurality of smoke absorbing mouths 11 intercommunication's cavity 12, and cavity 12 cross-section is the funnel shape;

the sealing frame 2 is arranged in the cavity 12, the top of the sealing frame 2 is connected with the smoke suction cover 3, the top of the smoke suction cover 3 is connected with the oil smoke pipe 31, and meanwhile, the exhaust fan is arranged at the smoke suction cover 3, so that negative pressure is formed in the smoke suction cover body 1, and the effect of sucking oil smoke is realized;

the sealing frame 2 also comprises:

the filter mechanism 4 is used for reducing the resistance of the oil smoke entering the sealing frame 2 from the smoke suction port 11 and assisting in filtering the oil smoke, the filter mechanism 4 comprises a first filter screen plate 41 and a second filter screen plate 42 which are respectively arranged at the bottom of the sealing frame 2, the first filter screen plate 41 is positioned at the bottom of the second filter screen plate 42, and the first filter screen plate 41 and the second filter screen plate 42 are detachably connected to the inner wall of the sealing frame 2, so that the first filter screen plate 41 and the second filter screen plate 42 can be conveniently and regularly detached and cleaned;

the cross section of the first filter screen plate 41 is arc-shaped, the cross section of the second filter screen plate 42 is wave-shaped, and the mesh diameter of the first filter screen plate 41 is larger than that of the second filter screen plate 42;

the bottom of the second filter screen plate 42 is provided with an air inducing mechanism 7 for guiding out air flow, the air inducing mechanism 7 comprises a supporting seat 71 equidistantly arranged at the center of the bottom of the second filter screen plate 42, and a connecting rod 72 is arranged at the bottom of the supporting seat 71;

the bottom of the connecting rod 72 is rotationally connected with a connecting disc 73, and the connecting disc 73 and the connecting rod 72 are connected by adopting a one-way bearing, so that when the fan blades 74 rotate, air flow can be guided into the sealing frame 2, and a plurality of fan blades 74 are equidistantly surrounded on the outer side of the connecting disc 73;

the specific implementation process comprises the following steps: when the fume hood body 1 operates, fume enters the cavity 12 from the fume suction opening 11, particles contained in the fume are filtered through the first filter screen plate 41 and the second filter screen plate 42 at the sealing frame 2, and when the fume enters, the generated gas flow force is further provided for driving forces of the fan blades 74 respectively, so that the fan blades 74 rotate relative to the connecting rod 72 through the connecting disc 73, and the entering fume is further assisted to be guided into the sealing frame 2, so that the resistance of more gases is reduced.

The air homogenizing component 5, the air homogenizing component 5 makes the filtered air enter the top end in the sealing frame 2 uniformly, the air homogenizing component 5 comprises an air homogenizing block 51 which is arranged in the sealing frame 2 and is formed by the top of the second filter screen plate 42, and the cross section of the air homogenizing block 51 is in an inverted triangle shape;

UV lamp assembly 6, UV lamp assembly 6 cooperates with even gas subassembly 5, discharge by oil smoke pipe 31 department after fully decomposing the oil smoke that gets into in the sealed frame 2

The air homogenizing block 51 is provided with an S-shaped guide groove 52, the filtered air flows into the smoke suction hood 3 through the guide groove 52, the air homogenizing block 51 is also provided with an air inlet groove communicated with the guide groove 52, and the guide groove 52 is matched with the air inlet groove, so that the filtered air enters the guide groove 52 from the inclined planes at two sides of the air homogenizing block 51;

the diversion trench 52 and the air inlet trench separate the air homogenizing block 51 into three accommodating blocks 53, and the three accommodating blocks 53 are internally provided with a transfer piece 8 for accommodating more flue gas;

the accommodating block 53 is provided with an accommodating groove 531 corresponding to the position of the transferring piece 8, one side of the accommodating groove 531, which is close to the inside of the sealing frame 2, is provided with a plurality of air inlets 532, and the sealing piece 9 is arranged at each of the plurality of air inlets 532;

the top of the supporting rod 92 passes through a connecting plate 533 to be fixedly connected with a limiting plate 94;

a supporting spring 95 is sleeved outside the supporting rod 92, and two ends of the supporting spring 95 are fixedly connected with a circular plate 93 and a connecting plate 533 respectively;

a connecting plate 533 for connecting the plurality of sealing members 9 is installed in the accommodating groove 531, connecting rods 72 are fixedly connected to two ends of the connecting plate 533 respectively, and the two connecting rods 72 are fixedly installed in the accommodating groove 531;

the side of the accommodating block 53, which is close to the diversion trench 52, is provided with an air outlet piece 54, the air outlet piece 54 comprises a plurality of air outlet holes 541 which are arranged on the accommodating block 53 and are communicated with the accommodating groove 531, the air outlet ends of the plurality of air outlet holes 541 face the diversion trench 52, a diversion pipe 542 is arranged at the inner side of the air outlet holes 541, and a one-way valve is arranged on the diversion pipe 542;

the UV lamp assembly 6 comprises a plurality of first ultraviolet lamps 61 arranged in the S-shaped diversion trench 52, the first ultraviolet lamps 61 are on the same Y-axis straight line, and a second ultraviolet lamp 62 is arranged below the conical end of the bottom of the air homogenizing block 51;

the third ultraviolet lamp 63 is installed in each of the plurality of receiving grooves 531.

The specific implementation process comprises the following steps: when the fume passes through the first filter screen plate 41 and the second filter screen plate 42, at this time, the first ultraviolet lamps 61 and the second ultraviolet lamps 62 are turned on while the fume hood body 1 is turned on, most of the filtered fume passes through the second ultraviolet lamps 62, the second ultraviolet rays primarily decompose the fume, and then the fume-containing gas and the decomposed gas enter the inlet groove through the diversion groove 52, enter the air guide groove, and the first ultraviolet lamps 61 in the S-shaped air guide groove fully decompose the fume-containing gas again, so that the fume is fully decomposed;

meanwhile, when the lampblack is more, the display panel at the position of the lampblack body 1 is regulated and controlled, so that the operating speed of the exhaust fan in the lampblack body 1 is regulated and controlled, the negative pressure suction force of the exhaust fan is further increased, more lampblack-containing gas is accumulated in the sealing frame 2, more gas flows through the air inlet 532, the pushing force generated by the flowing of the gas flows further pushes the rubber plug 91 to separate from the air inlet 532, more gas enters the accommodating groove 531 in the accommodating block 53 at the moment, meanwhile, when the rubber plug 91 moves, the supporting spring 95 is further extruded, the supporting spring 95 acts on the pressure sensor 931 reversely, the further pressure sensor 931 sends signals to the controller, the controller drives the third ultraviolet lamp 63 to be started, the ultraviolet lamp light generated by the further third ultraviolet lamp 63 breaks down the gas in the accommodating groove 531, and meanwhile, the one-way valve is started, the gas flows into the flow guide groove 52 from the air outlet 541 again, so that the second ultraviolet lamp 62 breaks down the lampblack-containing gas again, and the effect of insufficient lampblack-containing gas can be further prevented under the condition of more lampblack.

Examples

The bottom of the supporting seat 71 is provided with a threaded hole, the top of the connecting rod 72 is provided with external threads, and the connecting rod 72 is detachably connected with the supporting seat 71 through the external threads;

embodiment III, please refer to FIG. 10

The connecting rod 72 top is equipped with the recess, and the inside sliding connection of recess has the clamping rod 721, one side fixedly connected with clamping block 722 of clamping rod 721, and clamping block 722 slides and runs through the recess department, clamping rod 721 is L shape, and be connected with a plurality of buffer springs 723 between clamping rod 721 and the recess, be equipped with on the supporting seat 71 with clamping block 722 complex joint groove, thereby through pressing clamping rod 721, thereby make clamping block 722 break away from the joint groove department, further realization is to the effect of carrying out quick dismantlement between connecting rod 72 and the supporting seat 71, simultaneously through pressing clamping rod 721, thereby can be with the effect of being connected between connecting rod 72 and the supporting seat 71.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a UV petticoat pipe, includes petticoat pipe body (1), petticoat pipe body (1) bottom equidistance is equipped with a plurality of smoking mouths (11), its characterized in that: a cavity (12) communicated with a plurality of smoking openings (11) is arranged on the smoke hood body (1), and the cross section of the cavity (12) is funnel-shaped;

the cavity (12) is internally provided with a sealing frame (2), the top of the sealing frame (2) is connected with a smoke suction cover (3), and the top of the smoke suction cover (3) is connected with an oil smoke pipe (31);

the sealing frame (2) also comprises:

the filtering mechanism (4) is used for reducing the resistance of the oil smoke entering the sealing frame (2) from the smoke suction port (11) and assisting in filtering the oil smoke; a kind of electronic device with high-pressure air-conditioning system

The gas homogenizing component (5) enables the filtered gas to uniformly enter the top end inside the sealing frame (2); a kind of electronic device with high-pressure air-conditioning system

The UV lamp assembly (6), UV lamp assembly (6) and even gas assembly (5) cooperate, to get into the oil smoke in sealed frame (2) and discharge by oil smoke pipe (31) after fully decomposing, even gas assembly (5) are including installing in sealed frame (2) inside and for by even gas piece (51) at second filter screen plate (42) top, even gas piece (51) cross-section is the reverse triangle shape, be equipped with guiding gutter (52) that are the S shape on even gas piece (51), and the gas after filtering flows into in fume hood (3) department through guiding gutter (52), still be equipped with the air inlet groove with guiding gutter (52) intercommunication on even gas piece (51), and guiding gutter (52) cooperate with the air inlet groove, make the gas after filtering get into guiding gutter (52) by even gas piece (51) both sides inclined plane, guiding gutter (52) are three accommodation piece (53) with the air inlet groove separation, and install in three accommodation piece (53) more and are arranged in holding fume in being used for holding in the piece (8);

the accommodating block (53) is provided with an accommodating groove (531) corresponding to the transferring piece (8), the transferring piece (8) comprises a plurality of air inlets (532) arranged on one side of the accommodating groove (531) close to the inside of the sealing frame (2), and sealing pieces (9) are arranged at the positions of the plurality of air inlets (532);

connecting plates (533) for connecting the sealing elements (9) are arranged in the accommodating groove (531), connecting rods (72) are fixedly connected to two ends of each connecting plate (533), and two connecting rods (72) are fixedly arranged in the accommodating groove (531);

one side of the accommodating block (53) close to the diversion trench (52) is provided with an air outlet piece (54).

2. A UV hood according to claim 1, wherein: the filter mechanism (4) comprises a first filter screen plate (41) and a second filter screen plate (42) which are respectively arranged at the bottom of the sealing frame (2), and the first filter screen plate (41) is positioned at the bottom of the second filter screen plate (42);

the section of the first filter screen plate (41) is arc-shaped;

the cross section of the second filter screen plate (42) is wave-shaped, and the mesh diameter of the first filter screen plate (41) is larger than that of the second filter screen plate (42);

the bottom of the second filter screen plate (42) is provided with an induced air mechanism (7) for guiding out air flow.

3. A UV hood according to claim 2, wherein: the air inducing mechanism (7) comprises a supporting seat (71) which is equidistantly arranged at the center of the bottom of the second filter screen plate (42), and a connecting rod (72) is arranged at the bottom of the supporting seat (71);

the bottom of the connecting rod (72) is rotationally connected with a connecting disc (73), and a plurality of fan blades (74) are equidistantly surrounded on the outer side of the connecting disc (73).

4. A UV hood according to claim 1, wherein: the sealing piece (9) comprises rubber plugs (91) which are respectively connected with the air inlet holes (532) in a matching mode, a circular plate (93) is fixedly connected to the top of each rubber plug (91), and a supporting rod (92) is fixedly connected to the top of each circular plate (93);

the top of the supporting rod (92) penetrates through the connecting plate (533) to be fixedly connected with a limiting plate (94);

the outside cover of bracing piece (92) is equipped with supporting spring (95), supporting spring (95) both ends are respectively with plectane (93) and connecting plate (533) fixed connection.

5. A UV hood according to claim 4, wherein: a pressure sensor (931) is mounted on the circular plate (93), and one end of a supporting spring (95) at the circular plate (93) is connected with the pressure sensor (931).

6. A UV hood according to claim 1, wherein: the air outlet piece (54) comprises a plurality of air outlet holes (541) which are arranged on the accommodating block (53) and are communicated with the accommodating groove (531), the air outlet ends of the air outlet holes (541) face the guide groove (52), a guide pipe (542) is arranged on the inner side of the air outlet holes (541), and a one-way valve is arranged on the guide pipe (542).

7. A UV hood according to claim 1, wherein: the UV lamp assembly (6) comprises a plurality of first ultraviolet lamps (61) arranged in an S-shaped diversion trench (52), the plurality of first ultraviolet lamps (61) are on the same Y-axis straight line, and a second ultraviolet lamp (62) is arranged below the conical end at the bottom of the air homogenizing block (51);

a third ultraviolet lamp (63) is installed in each of the plurality of accommodating grooves (531).