A kitchen smoke exhaust duct roof horizontal rotating ring structure

Abstract

The invention discloses a kitchen smoke exhaust duct roof horizontal rotating ring structure, belongs to the technical field of smoke exhaust ducts, and aims at the problems that the roof smoke exhaust duct lacks effective protection and has a poor smoke emission effect. It comprises a horizontal base surface, the top surface of the horizontal base surface is provided with a smoke exhaust channel, the top surface of the horizontal base surface is provided with a plurality of installation grooves which are all connected with the smoke exhaust channel, each installation groove is provided with a sealing strip, and the inner surface of the smoke exhaust channel is provided with a protective collar fixed together with the plurality of sealing strips. The invention forms an ascending airflow at the fixed collar and the rotating ring on the smoke exhaust channel by the smoke, and forms a convection phenomenon with the natural wind speed at the rotating blade, so that the rotating ring forms an "unpowered" rotation on the top surface of the fixed collar, greatly improving the smoke emission rate and emission effect in the smoke exhaust channel, and forming an annular airflow for the smoke to reach the rotating blade from the side through the bypass air guide pipe, thereby further improving the smoke emission effect in the smoke exhaust channel.

Description

Technical Field

[0001] The invention belongs to the technical field of smoke exhaust ducts, and in particular relates to a kitchen smoke exhaust duct roof horizontal swivel structure. Background Art

[0002] A flue is a tubular device for discharging exhaust gas and smoke. A residential flue refers to a vertical pipe product used to remove kitchen smoke or bathroom exhaust gas. It is also called an exhaust duct, ventilation duct, or residential exhaust duct.

[0003] In high-rise residential buildings or factory buildings, in order to improve the indoor environment of the kitchen, smoke exhaust components are often reasonably installed on the roof so that the smoke and dirty gases in the kitchen can be quickly discharged. However, in the actual layout process, the smoke exhaust duct on the roof is usually treated with a smoke exhaust pipe for exhaust and heat dissipation. It usually lacks effective protection for the smoke exhaust pipe, and when the smoke in the kitchen is discharged, the smoke exhaust effect is poor.

[0004] Therefore, a kitchen smoke exhaust duct roof horizontal swivel structure is needed to solve the problems of lack of effective protection of the roof smoke exhaust duct and poor smoke emission effect in the prior art. Summary of the invention

[0005] The object of the present invention is to provide a kitchen smoke exhaust duct roof horizontal swivel structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a kitchen smoke exhaust duct roof horizontal rotating ring structure, comprising a horizontal base surface, a smoke exhaust channel is provided on the top surface of the horizontal base surface, a plurality of mounting grooves are provided on the top surface of the horizontal base surface, all of which are connected to the smoke exhaust channel, each of the mounting grooves is provided with a sealing strip, the inner surface of the smoke exhaust channel is provided with a protective collar fixed together with the plurality of sealing strips, the top surface of the protective collar is provided with a fixing collar, a fastening mechanism is provided between the fixing collar and the protective collar, the top surface of the protective collar is rotatably connected with a rotating ring, the top surface of the rotating ring is provided with a non-powered air duct mechanism, the outer periphery of the rotating ring is provided with an isolation ring fixed to the top surface of the horizontal base surface, and a bypass air guide mechanism matched with the non-powered air duct mechanism is provided between the isolation ring and the protective collar.

[0007] It should be noted in the scheme that the fastening mechanism includes a plurality of evenly distributed placement grooves, and a plurality of the placement grooves are opened on the top surface of the horizontal base surface and connected to the top surface of the smoke exhaust channel. The inner wall of each placement groove is provided with a positioning lug fixed to the protective ring, and a sealing ring is fastened to the bottom outer surface of the fixing ring, and a mounting block extending to the inner wall of the mounting groove is fixed to the bottom surface of the sealing ring, and a plurality of fastening bolts extending to the inner wall of the placement groove are threaded through the top surface of the sealing ring.

[0008] It is further worth explaining that the unpowered air duct mechanism includes a cross fixing rod fixed to the inner surface of the top of the fixing ring, the inner wall of the cross fixing rod is rotatably connected to a rotating rod, the top surface of the rotating rod is detachably connected to a shielding plate, and a plurality of evenly distributed rotating blades are fixed to the opposite surface of the shielding plate and the rotating ring.

[0009] It should be further explained that the rotating blades are obliquely distributed between the opposite surfaces of the shielding plate and the rotating ring, and an exhaust passage is provided between two adjacent rotating blades.

[0010] As a preferred embodiment, the bypass air guiding mechanism includes a guide plate fixed to the top surface of the isolation ring, a plurality of evenly distributed bypass air ducts are fixedly penetrated on the top surface of the guide plate, the bypass air ducts are fixedly penetrated through the sealing ring and the protective collar, the inner wall of the mounting groove is provided with a waterproof strip fixed to the top surface of the sealing strip, a support pad a in contact with the bottom surface of the bypass air duct is fixed on the top surface of the waterproof strip, a placement groove corresponding to the plurality of bypass air ducts is provided on the inner surface of the isolation ring, a support pad b in contact with the outer surface of the bypass air duct is fixed on the inner wall of each of the placement grooves, exhaust holes evenly distributed are provided on opposite surfaces of the plurality of bypass air ducts, a guide groove matching the exhaust holes is provided on the top surface of the guide plate, and the top surface of the bypass air duct is connected with an outlet pipe toward the rotating blades.

[0011] As a preferred embodiment, the top surfaces of the shielding plate and the guide plate are both arc-shaped, the top vertical section of the rotating ring is an inverted convex shape, and the inner surface vertical section of the guide plate is a matching concave shape.

[0012] As a preferred embodiment, an annular groove is formed on the inner surface of the bottom of the guide plate, and a rotating bar located inside the annular groove is fixed on the outer surface of the rotating ring.

[0013] As a preferred embodiment, the outer surface of the fixed collar is provided with a plurality of convex rings distributed downward, and the contact surface between the bottom outer surface of the rotating ring and the convex rings is a matching arc surface.

[0014] As a preferred embodiment, the top outer surface of the isolation ring is connected to a water inlet pipe, and the bottom outer surface of the isolation ring is connected to a water outlet pipe.

[0015] Compared with the prior art, the kitchen smoke exhaust duct roof horizontal swivel structure provided by the present invention has at least the following beneficial effects:

[0016] (1) The protective collar and the fixed collar are isolated by the isolation ring and the guide plate, thereby greatly improving the protection performance of the smoke exhaust channel. The shielding plate shields the top surface of the smoke exhaust channel, so that the smoke is exhausted from the side, thereby ensuring the smoothness of the smoke discharge.

[0017] (2) The smoke forms an upward airflow at the fixed ring and the rotating ring on the smoke exhaust channel, which forms a convection phenomenon with the natural wind speed at the rotating blades, so that the rotating ring forms an "unpowered" rotation on the top surface of the fixed ring, thereby greatly improving the smoke emission rate and emission effect in the smoke exhaust channel. The smoke reaches the rotating blades from the side through the bypass air duct to form a ring airflow, which further improves the smoke emission effect in the smoke exhaust channel.

[0018] (3) When the rotating ring rotates on the top surface of the fixed ring, a preliminary rotation limit is formed on it through the outer surface of the bottom of the rotating ring, a second rotation limit is formed by the rotating ring and the inner wall of the guide plate, and finally a triple rotation limit is formed by the rotating bar and the annular groove, thereby fully ensuring the stability of the rotating ring when rotating on the fixed ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the partial internal structure of the isolation ring of the present invention;

[0021] Figure 3 It is a schematic diagram of the local structure of the installation groove and the sealing strip of the present invention;

[0022] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of the middle A area;

[0023] Figure 5 It is a schematic diagram of the local structure of the protective collar of the present invention;

[0024] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of area B in the middle.

[0025] In the figure: 1, horizontal base surface; 2, smoke exhaust channel; 3, installation groove; 4, sealing strip; 5, protective collar; 6, fixing collar; 7, fastening mechanism; 71, placement groove; 72, positioning lug; 73, sealing ring; 74, mounting block; 75, fastening bolt; 8, rotating ring; 9, non-powered air duct mechanism; 91, cross fixing rod; 92, rotating rod; 93, shielding plate; 94, rotating blade; 10, isolation ring; 11, bypass air guide mechanism; 111, guide plate; 112, bypass air guide pipe; 113, waterproof strip; 114, support pad a; 115, support pad b; 116, exhaust hole; 117, guide groove; 118, air outlet pipe; 119, limit groove; 12, exhaust channel; 13, annular groove; 14, rotating strip; 15, water inlet pipe; 16, water outlet pipe. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the embodiments.

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0028] The following examples are used to illustrate the present invention, but they cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions. Simple improvements to the method of the present invention under the premise of the concept of the present invention belong to the scope of protection claimed in the present invention.

[0029] See also Figure 1-6The present invention provides a kitchen smoke exhaust duct roof horizontal rotating ring structure, comprising a horizontal base surface 1, a smoke exhaust channel 2 is provided on the top surface of the horizontal base surface 1, a plurality of mounting grooves 3 are provided on the top surface of the horizontal base surface 1, each mounting groove 3 is provided with a sealing strip 4, and the inner surface of the smoke exhaust channel 2 is provided with a protective collar 5 fixed together with the plurality of sealing strips 4, wherein the protective collar 5 is made of high temperature resistant material, so as to fully protect the inner wall of the roof at the smoke exhaust channel 2, and the setting of the sealing strip 4 can not only improve the protection The ring 5 can be installed stably and the reserved installation groove 3 can be shielded and protected. A fixed ring 6 is arranged on the top surface of the protective ring 5, and a fastening mechanism 7 is arranged between the fixed ring 6 and the protective ring 5. A rotating ring 8 is rotatably connected to the top surface of the protective ring 5, and a non-powered air duct mechanism 9 is arranged on the top surface of the rotating ring 8. An isolation ring 10 fixed to the top surface of the horizontal base surface 1 is arranged on the periphery of the rotating ring 8, and a bypass air guide mechanism 11 matched with the non-powered air duct mechanism 9 is arranged between the isolation ring 10 and the protective ring 5.

[0030] Further as Figure 2 and Figure 5 As shown, it is worth explaining in detail that the fastening mechanism 7 includes a plurality of evenly distributed placement grooves 71, and the plurality of placement grooves 71 are opened on the top surface of the horizontal base surface 1 and are connected to the top surface of the smoke exhaust channel 2. The inner wall of each placement groove 71 is provided with a positioning lug 72 fixed to the protective ring 5, and the bottom outer surface of the fixing ring 6 is fastened with a sealing ring 73, and the bottom surface of the sealing ring 73 is fixed with a mounting block 74 extending to the inner wall of the mounting groove 3, and the top surface of the sealing ring 73 is threaded with a plurality of fastening bolts 75 extending to the inner wall of the placement groove 71.

[0031] Further as Figure 2 , Figure 3 and Figure 5 As shown, it is worth explaining in detail that the unpowered air duct mechanism 9 includes a cross fixing rod 91 fixed to the inner surface of the top of the fixing ring 6, the inner wall of the cross fixing rod 91 is rotatably connected to a rotating rod 92, the top surface of the rotating rod 92 is detachably connected to a shielding plate 93, and the opposite surface of the shielding plate 93 and the rotating ring 8 is fixed with a plurality of evenly distributed rotating blades 94, wherein the bottom end of the rotating rod 92 can be coaxially mounted with a turbine blade, which is used to better discharge the smoke in the smoke exhaust channel 2 through "unpowered" rotation.

[0032] Further as Figure 5 and Figure 6 As shown, it is worth explaining in detail that the rotating blades 94 are obliquely distributed between the opposite surfaces of the shielding plate 93 and the rotating ring 8, and an exhaust channel 12 is arranged between two adjacent rotating blades 94. The exhaust channel 12 performs smoke exhaust treatment on the side, thereby ensuring the top surface protection effect when the smoke at the exhaust channel 2 is discharged.

[0033] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth specifically explaining that the bypass air guide mechanism 11 includes a guide plate 111 fixed to the top surface of the isolation ring 10, and the top surface of the guide plate 111 is fixed with a plurality of bypass air guide pipes 112 that are evenly distributed. The bypass air guide pipes 112 are fixedly penetrated through the sealing ring 73 and the protective collar 5. The inner wall of the mounting groove 3 is provided with a waterproof strip 113 fixed to the top surface of the sealing strip 4. The top surface of the waterproof strip 113 is fixed with a support pad a114 that contacts the bottom surface of the bypass air guide pipe 112. The isolation ring The inner surface of 10 is provided with limiting grooves 119 corresponding to the plurality of bypass air ducts 112 one by one, and the inner wall of each limiting groove 119 is fixed with a supporting pad b115 in contact with the outer surface of the bypass air duct 112, and the opposite surfaces of the plurality of bypass air ducts 112 are provided with exhaust holes 116 which are evenly distributed, and the top surface of the guide plate 111 is provided with guide grooves 117 which match the exhaust holes 116, and the top surface of the bypass air duct 112 is connected with an exhaust pipe 118 toward the rotating blade 94.

[0034] This solution has the following working process: when the smoke exhaust duct on the roof is installed, the protective collar 5 is placed in the installation groove 3 and the placement groove 71 respectively through the sealing strip 4 and the positioning lug 72, so as to form a preliminary protection treatment for the inner wall of the smoke exhaust duct, and the fixing collar 6 is fastened by the sealing ring 73 and the fastening bolt 75, and the stability of the installation of the protective collar 5 at the smoke exhaust duct 2 can be further improved, and the protective collar 5 and the fixing collar 6 are isolated and protected by the guide plate 111 and the isolation ring 10, so as to further improve the protection effect of the smoke exhaust duct 2, and the top surface of the smoke exhaust duct 2 is shielded and protected by the shielding plate 93, and the smoke discharged from the kitchen is discharged from the exhaust duct 12 formed by the side rotating blades 94, so as to ensure the discharge effect of the kitchen smoke;

[0035] When the smoke from the kitchen is discharged through the smoke exhaust channel 2, the smoke forms an ascending airflow between the protective ring 5 and the fixed ring 6 until it reaches the rotating blade 94, thereby discharging the smoke from the exhaust channel 12. At the same time, the rotating ring 8 and the shielding plate 93 are in the air circulating outside, and the natural wind speed in nature is used to push the rotating blade 94 to form air convection with the ascending airflow, so that the shielding plate 93 rotates on the cross fixing rod 91 through the rotating rod 92 and the rotating ring 8 on the fixed ring 6, thereby forming a "powerless" rotation, further improving the exhaust effect of the smoke from the smoke exhaust channel 2, and when the smoke in the smoke exhaust channel 2 is discharged upward, the smoke is discharged. During the release process, part of the smoke enters the bypass air duct 112 and is discharged through the outlet pipe 118 and the exhaust hole 116 arranged at the top thereof. The smoke discharged from the outlet pipe 118 flows in the direction of rotation of the rotating blades 94, thereby further improving the rotation effect of the rotating ring 8 on the fixed ring 6. At the same time, the guide groove 117 on the guide plate 111 guides the smoke discharged from the exhaust hole 116, thereby cooperating with the smoke discharged from the outlet pipe 118, so that the rotating blades 94 can be complementary to each other for better rotation, thereby increasing the airflow effect at the rotating blades 94, and then greatly improving the smoke exhaust effect at the smoke exhaust channel 2.

[0036] According to the above working process, it can be known that: the protective collar 5 is fastened and installed by the sealing ring 73 and the fastening bolts 75, so that the protective collar 5 is stably installed at the smoke exhaust channel 2, and the protective collar 5 and the fixed collar 6 are isolated by the isolation ring 10 and the guide plate 111, so that the protection performance of the smoke exhaust channel 2 is greatly improved, and the shielding plate 93 shields the top surface of the smoke exhaust channel 2, so that the smoke forms a side exhaust treatment, thereby ensuring the smoothness of the smoke discharge; the smoke forms an ascending airflow at the fixed collar 6 and the rotating ring 8 on the smoke exhaust channel 2, and forms a convection phenomenon with the natural wind speed at the rotating blade 94, so that the rotating ring 8 forms a "powerless" rotation on the top surface of the fixed collar 6, thereby greatly improving the smoke discharge rate and discharge effect in the smoke exhaust channel 2, and the smoke is diverted from the side by the bypass air duct 112 to form an annular airflow at the rotating blade 94, thereby further improving the smoke discharge effect in the smoke exhaust channel 2.

[0037] Further as Figure 4 and Figure 6As shown, it is worth explaining in detail that the top surfaces of the shielding plate 93 and the guide plate 111 are both arranged in an arc shape, the top vertical section of the rotating ring 8 is arranged in an inverted convex shape, the inner surface vertical section of the guide plate 111 is arranged in a matching concave shape, an annular groove 13 is provided on the bottom inner surface of the guide plate 111, and a rotating bar 14 located inside the annular groove 13 is fixed on the outer surface of the rotating ring 8, and a plurality of convex rings distributed downward are provided on the outer surface of the bottom of the rotating ring 8 and the contact surface of the convex ring is a matching arc surface. When the rotating ring 8 rotates on the top surface of the fixed ring 6, a preliminary rotation limit is formed on it by the bottom outer surface of the rotating ring 8, and a second rotation limit is formed by the rotating ring 8 and the inner wall of the guide plate 111, and finally a triple rotation limit is formed by the rotating bar 14 and the annular groove 13, thereby fully ensuring the stability of the rotating ring 8 when rotating on the fixed ring 6.

[0038] Further as Figure 1 As shown, it is worth explaining in detail that the top outer surface of the isolation ring 10 is connected to a water inlet pipe 15, and the bottom outer surface of the isolation ring 10 is connected to a water outlet pipe 16. The arrangement of the water inlet pipe 15 and the water outlet pipe 16 forms a water cooling zone at the isolation ring 10, the horizontal base surface 1 and the sealing ring 73, so that the smoke discharged from the smoke exhaust channel 2 and the smoke discharged from the bypass air duct 112 can be cooled.

[0039] In summary: the protective ring 5 and the fixed ring 6 are isolated by the isolation ring 10 and the guide plate 111, thereby greatly improving the protection performance of the smoke exhaust channel 2, and the shielding plate 93 shields the top surface of the smoke exhaust channel 2, so that the smoke is exhausted from the side, thereby ensuring the smoothness of the smoke discharge; the smoke forms an upward airflow at the fixed ring 6 and the rotating ring 8 on the smoke exhaust channel 2, and forms a convection phenomenon with the natural wind speed at the rotating blade 94, so that the rotating ring 8 forms an "unpowered" rotation on the top surface of the fixed ring 6, thereby greatly improving the smoke discharge rate and discharge effect in the smoke exhaust channel 2, and the bypass air duct 112 forms an annular airflow for the smoke to reach the rotating blade 94 from the side, thereby further improving the smoke discharge effect in the smoke exhaust channel 2.

[0040] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "including" or "comprising" and the like used in the present invention mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0041] The experimental instruments involve a test box and an air compressor (rated flow rate is 600 m³ / h, and the air supply pressure can reach 0.7 MPa). The test product prior art purchases unpowered hoods A and B set at the bottom of the test box, and the test product of this embodiment 1: a protective collar is set at the bottom of the test box and connected to the unpowered air duct mechanism and the bypass air guide mechanism. The test product of this embodiment 2: compared with embodiment 1, a limit groove 119 is set on the inner surface of the isolation ring 10. The bottom of the test box is externally connected to the pipeline, and the air compressor, the pressure-stabilizing tank, and the regulating valve are used to supply air to the test product through the pipeline. The pressure measuring tube is connected to the air inlet and the air outlet of the test product perpendicular to the flow direction of the air flow. For the convenience of the test, a vertical pipeline can be connected externally above the test product for comparative testing. In addition, the pressure measuring tube is externally connected to a pressure gauge so that the data can be directly measured, the pressure at the air inlet is adjusted to be consistent, and the pressure at the air outlet is compared to obtain a reference for the resistance characteristic effect. Test results: Unpowered hoods A and B: ventilation volumes 75 cubic meters / hour and 80 cubic meters / hour, Examples 1 and 2: ventilation volumes 125 cubic meters / hour and 136 cubic meters / hour.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A kitchen smoke exhaust duct roof horizontal swivel structure, comprising a horizontal base surface (1), a smoke exhaust channel (2) being provided on the top surface of the horizontal base surface (1), characterized in that: The top surface of the horizontal base surface (1) is provided with a plurality of mounting grooves (3) which are all connected to the smoke exhaust channel (2), each of the mounting grooves (3) is provided with a sealing strip (4), the inner surface of the smoke exhaust channel (2) is provided with a protective collar (5) which is fixed together with the plurality of sealing strips (4), the top surface of the protective collar (5) is provided with a fixing collar (6), a fastening mechanism (7) is provided between the fixing collar (6) and the protective collar (5), the top surface of the protective collar (5) is rotatably connected with a rotating ring (8), the top surface of the rotating ring (8) is provided with a non-powered air duct mechanism (9), the outer periphery of the rotating ring (8) is provided with an isolating ring (10) which is fixed to the top surface of the horizontal base surface (1), and a bypass air guide mechanism (11) which cooperates with the non-powered air duct mechanism (9) is provided between the isolating ring (10) and the protective collar (5); The fastening mechanism (7) comprises a plurality of evenly distributed placement grooves (71), the plurality of placement grooves (71) being opened on the top surface of the horizontal base surface (1) and communicating with the top surface of the smoke exhaust passage (2), the inner wall of each placement groove (71) being provided with a positioning lug (72) fixed to the protective collar (5), the bottom outer surface of the fixing collar (6) being fastened with a sealing ring (73), the bottom surface of the sealing ring (73) being fixed with a mounting block (74) extending to the inner wall of the mounting groove (3), the top surface of the sealing ring (73) being threaded with a plurality of fastening bolts (75) extending to the inner wall of the placement groove (71); The non-powered air duct mechanism (9) comprises a cross fixing rod (91) fixed to the inner surface of the top of the fixing ring (6); the inner wall of the cross fixing rod (91) is rotatably connected to a rotating rod (92); the top surface of the rotating rod (92) is detachably connected to a shielding plate (93); and a plurality of evenly distributed rotating blades (94) are fixed to the opposite surface of the shielding plate (93) and the rotating ring (8); The bypass air guide mechanism (11) comprises a guide plate (111) fixed to the top surface of the isolation ring (10), a plurality of bypass air guide pipes (112) fixedly penetrated through the top surface of the guide plate (111), the bypass air guide pipes (112) fixedly penetrated through the sealing ring (73) and the protective collar (5), the inner wall of the mounting groove (3) is provided with a waterproof strip (113) fixed to the top surface of the sealing strip (4), a support pad a (114) in contact with the bottom surface of the bypass air guide pipe (112) is fixed to the top surface of the waterproof strip (113), and the isolation ring (10 ) is provided with limiting grooves (119) corresponding one by one to the plurality of bypass air guide tubes (112); a supporting pad b (115) in contact with the outer surface of the bypass air guide tube (112) is fixed to the inner wall of each limiting groove (119); exhaust holes (116) distributed evenly are provided on the opposite surfaces of the plurality of bypass air guide tubes (112); a guide groove (117) matching the exhaust holes (116) is provided on the top surface of the guide plate (111); and an exhaust pipe (118) facing the rotating blade (94) is connected to the top surface of the bypass air guide tube (112).

2. A kitchen smoke exhaust duct roof horizontal rotating ring structure according to claim 1, characterized in that: The rotating blades (94) are distributed obliquely between the opposing surfaces of the shielding disk (93) and the rotating ring (8), and an exhaust passage (12) is provided between two adjacent rotating blades (94).

3. A kitchen smoke exhaust duct roof horizontal rotating ring structure according to claim 2, characterized in that: The top surfaces of the shielding plate (93) and the guide plate (111) are both arranged in the form of arc surfaces, the vertical cross-section of the top of the rotating ring (8) is arranged in the form of an inverted convex letter, and the vertical cross-section of the inner surface of the guide plate (111) is arranged in a matching concave letter.

4. A kitchen smoke exhaust duct roof horizontal rotating ring structure according to claim 3, characterized in that: An annular groove (13) is provided on the inner surface of the bottom of the guide plate (111), and a rotating bar (14) located inside the annular groove (13) is fixed on the outer surface of the rotating ring (8).

5. A kitchen smoke exhaust duct roof horizontal rotating ring structure according to claim 4, characterized in that: The outer surface of the fixed sleeve ring (6) is provided with a plurality of convex rings distributed downwards, and the contact surface between the outer surface of the bottom of the rotating ring (8) and the convex rings is a matching arc surface.

6. A kitchen smoke exhaust duct roof horizontal rotating ring structure according to claim 5, characterized in that: The top outer surface of the isolation ring (10) is connected to a water inlet pipe (15), and the bottom outer surface of the isolation ring (10) is connected to a water outlet pipe (16).

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