CN216770124U - Air supply duct structure of cigar airing house - Google Patents
Air supply duct structure of cigar airing house Download PDFInfo
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- CN216770124U CN216770124U CN202220281944.0U CN202220281944U CN216770124U CN 216770124 U CN216770124 U CN 216770124U CN 202220281944 U CN202220281944 U CN 202220281944U CN 216770124 U CN216770124 U CN 216770124U
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Abstract
The application discloses cigar airing house's air supply duct structure includes: the wind collecting bin and the plurality of wind distributing bins are arranged; the wind collecting bin is arranged on the outer side wall of the lower part of the cigar airing room; the outer side wall of the wind collecting bin is provided with a hot wind inlet, the opposite side wall of the wind collecting bin is provided with a hot wind outlet, and the hot wind outlets are respectively communicated with the air distributing bins; the wind distribution bin is accommodated and arranged below the bottom surface of the cigar airing house; the top surface of the air distribution bin is communicated with the bottom surface of the cigar airing room and is arranged in parallel and level. The hot air flow is uniformly and weakly fed into the cigar airing room from the bottom of the cigar airing room through the hot air supply channel arranged in the cigar airing room, and active directional air flow circulation is formed in the cigar airing room, so that the temperature in the cigar airing room is uniform to the maximum extent. And through structural design, the air supply duct structure can be hidden and set up in airing house bottom, does not influence operating space such as dress cigarette, play cigarette when guaranteeing that airing house is pleasing to the eye.
Description
Technical Field
The application relates to the technical field of tobacco production, in particular to an air supply duct structure of a cigar airing house.
Background
At present, a heating system is mostly adopted in a cigar tobacco leaf airing room for central heating, fin tubes are mostly used at the heating tail ends of the heating system for heat exchange, and the fin tubes and air in the airing room are radiated and convected to effectively transfer heat and improve the air temperature in the airing room. The heat of the finned tube can be transferred only by radiation and natural convection, so that the heat transfer efficiency is low, the speed is low, and the temperature reaction speed in the airing room is low. And generally, the finned tubes are only arranged at certain positions of the bottom of the airing house, so that the temperature of partial areas of the airing house is high, the temperature of partial areas is low, and the temperature uniformity is poor.
In order to solve the above problems, it is necessary to improve the reaction speed and temperature uniformity of temperature changes in the existing cigar airing room so as to uniformly and rapidly increase the temperature in the airing room without affecting the beneficial chemical reaction in the cigar airing process.
SUMMERY OF THE UTILITY MODEL
The application provides an air supply duct structure of a cigar airing room, which is used for solving the problems that finned tubes for heat transfer in the cigar airing room in the prior art are low in heat transfer efficiency, slow in heat transfer speed and slow in temperature reaction speed in the airing room; the finned tubes are only arranged at certain positions at the bottom of the airing room, so that the airing room has the technical problems of high temperature in partial areas, low temperature in partial areas and poor temperature uniformity.
The application provides a supply air duct structure in cigar storehouse that dries in air includes: the wind collecting bin and the plurality of wind distributing bins are arranged; the wind collecting bin is arranged on the outer side wall of the lower part of the cigar airing room; the outer side wall of the wind collecting bin is provided with a hot wind inlet, the opposite side wall of the wind collecting bin is provided with a hot wind outlet, and the hot wind outlets are respectively communicated with the wind distributing bins; the wind distribution bin is accommodated and arranged below the bottom surface of the cigar airing house; the top surface of the air distribution bin is communicated with the bottom surface of the cigar airing house and is arranged in parallel and level;
the wind distribution bin comprises: air groove, air bag, grid cover plate; the air groove is accommodated and arranged below the bottom surface of the cigar airing house; the wind bag is contained and laid in the whole wind groove; a plurality of vent holes are uniformly distributed on the air bag; the grid cover plate is covered on the top surface of the air duct and is arranged in parallel with the bottom surface of the cigar airing house;
and after the hot air enters each sub-air bin from the air collecting bin, the hot air enters the cigar airing room through each air vent on the air bag, and the hot air is discharged from the air outlet formed in the side wall of the upper part of the cigar airing room to perform air circulation.
Preferably, the wind collecting bin includes: the hot air inlet, the plurality of hot air branch interfaces and the adapter box body; a hollow cavity is arranged in the switching box body; a hot gas inlet is formed in the upper part of the first side wall of the adapter box body and communicated with the cavity; the lower part of the second side wall of the adapter box body is provided with a plurality of hot gas branch ports, and each hot gas branch port is respectively communicated with the cavity; the extending end of the hot air branch interface is communicated with each wind branch bin.
Preferably, the upper part of the first side wall of the adapter box body extends out of the ground and is arranged on the outer side wall of the lower part of the cigar airing house; the second side wall of the switching box body is tightly attached to the outer side wall of the cigar airing house; the lower part of the second side wall of the switching box body extends into the lower part of the cigar airing room and is communicated with one end of the air distributing bin arranged below the bottom surface of the cigar airing room.
Preferably, the cigar airing house comprises: a cigarette containing chamber, a plurality of cigarette racks and a hot air outlet; the cigarette racks are arranged in the cigarette containing chamber at intervals and supported on the top surface of the grid cover plate; the hot air outlet is arranged on the side wall of the top of the airing room and is communicated with the inside of the airing room.
Preferably, the wind collecting bin includes: the heat insulation material layer is attached to the outer side wall of the wind collection bin.
Preferably, the wind pocket includes: a bag body and an interface; the interface is arranged on the opening end of the bag body; the other end of the bag body is a closed end; a plurality of vent holes are arranged on the bag body at intervals.
Preferably, the top surface of the air duct is provided with an opening; the grid cover plate is covered on the open end surface of the air groove; the air groove is accommodated and arranged below the bottom surface of the cigar airing house; one end of the air duct is an open end, and the other end is a closed end; the opening end of the air groove is connected with the air collecting bin; the wind bag is accommodated in the wind groove, and the opening end of the wind bag is accommodated in the opening end of the wind groove and communicated with the wind collecting bin.
The beneficial effects that this application can produce include:
1) according to the air supply duct structure of the cigar airing room, the hot air flow is uniformly and weakly sent into the cigar airing room from the bottom of the cigar airing room through the hot air supply duct arranged in the cigar airing room, active directional air flow circulation is formed in the cigar airing room, and the temperature in the cigar airing room is uniform to the maximum extent. And through structural design, the air supply duct structure can be hidden and set up in the room bottom that dries in the air, does not influence operating space such as dress cigarette, play cigarette when guaranteeing to dry in the air the room pleasing to the eye.
2) The utility model provides a cigar dries in air the air supply duct structure in room through setting up the wind groove on the room bottom surface that dries in the air to set up porous wind bag in the wind groove, hot-air flows through behind the wind band, evenly lets in hot-air from the bottom in to the room that dries in the air, realizes the effect of whole thermally equivalent in the room that dries in the air. The structure can avoid the generation of heated dead angles, improve the heating uniformity, quickly improve the temperature in the airing room and have higher warming efficiency.
3) The application provides a cigar dries in air the supply-air duct structure in room, it is good to dry in the air room temperature homogeneity, and above-mentioned wind channel can be even see off hot-blast from the room bottom that dries in the air, and room temperature that dries in the air is more even hot-blast constantly evenly send into from the room bottom that dries in the air, discharges from the top, so constantly circulate, and the temperature that makes the room that dries in the air is more even. The temperature rising speed of the airing room is high. Because the hot air is directly fed into the airing room, compared with the conventional finned tube heat transfer mode, the airing room has higher temperature rise speed and can have faster temperature reaction. The air duct is arranged below the bottom plate of the air drying room, does not occupy any space of the tobacco loading room, has good concealment and attractive structure, and has no influence on the operations of discharging tobacco, loading tobacco and the like in the air drying room. The structure is beautiful.
4) The utility model provides a cigar room that dries in air's supply-air duct structure, the wind channel commonality is good, and all kinds of hot air supply equipment can be connected to above-mentioned wind channel structure, through set up the net apron on the wind groove top surface, both can normally ventilate, can provide effective support to trample the operating personnel on it again, guarantee each item operation normal clear in the room that dries in the air.
Drawings
Fig. 1 is a schematic view of a partial sectional structure of a cigar airing house in a front view in an installation state of an air duct structure provided by the present application;
FIG. 2 is a schematic top view of an air duct structure of a cigar airing house according to the present invention;
fig. 3 is a schematic perspective view of a wind collecting bin provided in the present application;
FIG. 4 is a schematic sectional view of the wind trough provided by the present application;
FIG. 5 is a schematic perspective view of an air duct provided herein;
fig. 6 is a schematic perspective view of the wind bag provided in the present application;
FIG. 7 is a schematic top view of the cover plate provided herein;
illustration of the drawings:
1. a hot air inlet; 2. a wind collecting bin; 211. a hot gas inlet; 212. a hot gas branch interface; 213. transferring the box body; 3. a wind distributing bin; 4. a tobacco rack; 5. a tobacco loading chamber; 6. a ground surface; 7. a hot air outlet; 10. a wind bag; 101. an interface; 102. a bag body; 103. a vent hole; 11. a grid cover plate; 12. and (4) an air duct.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
Technical means which are not described in detail in the present application and are not used for solving the technical problems of the present application are all arranged according to common knowledge in the field, and various common knowledge arrangement modes can be realized.
Referring to fig. 1-7, the application provides an air supply duct structure of cigar airing house, includes: the wind collecting bin 2 and the plurality of wind distributing bins 3; the wind collecting bin 2 is arranged on the outer side wall of the lower part of the cigar airing room; the outer side wall of the wind collecting bin 2 is provided with a hot wind inlet 1, the opposite side wall of the wind collecting bin 2 is provided with a hot wind outlet, and the hot wind outlets are respectively communicated with the wind distributing bins 3; the air distribution bin 3 is accommodated and arranged below the bottom surface of the cigar airing house; the top surface of the air distribution bin 3 is communicated with the bottom surface of the cigar airing house and is arranged in parallel and level;
the wind distribution bin 3 includes: the air duct 12, the air bag 10 and the grid cover plate 11; the air duct 12 is accommodated and arranged below the bottom surface of the cigar airing house; the wind bag 10 is accommodated and laid in the whole wind groove 12; a plurality of vent holes 103 are uniformly distributed on the wind bag 10; the grid cover plate 11 is covered on the top surface of the air duct 12 and is arranged in parallel with the bottom surface of the cigar airing house;
after entering each sub-air bin 3 from the air collecting bin 2, the hot air enters the cigar airing house through each air vent on the air bag 10, and the hot air is discharged from the air outlet formed in the side wall of the upper part of the cigar airing house to perform air circulation.
The plurality of air bags 10 are arranged on the bottom surface of the cigar airing room, and the plurality of air holes 103 are formed in the air bags 10, so that hot air can be uniformly circulated and uniformly distributed in the cigar airing room. The structure can replace the existing fin heat exchanger, and utilizes the characteristic that hot air is easy to float upwards, and after the hot air is introduced from the bottom of the air drying room, the hot air automatically rises in the process, so that the temperature of the whole air drying room is raised. Because the hot air is directly introduced into the uniformly distributed airing house, the heating efficiency can be effectively improved, the heating time is shortened, the flavor value of the cigars baked in the airing house is effectively kept, the Maillard reaction of the flue-cured tobacco is promoted to be timely carried out and is deeply carried out, and the flavor value of the cigar flue-cured tobacco is favorably improved.
The cigar airing house can be various existing airing houses, and can also be of the following structure: preferably, the cigar barn comprises: a cigarette containing chamber 5, a plurality of cigarette racks 4 and a hot air outlet 7; the cigarette racks 4 are arranged in the cigarette containing chamber 5 at intervals and supported on the top surface of the grid cover plate 11; the hot air outlet 7 is arranged on the side wall of the top of the airing room and is communicated with the inside of the airing room.
The ventilation structure with the structure can automatically discharge the hot air from the upper air outlet by utilizing the characteristic that the hot air is easy to float. Meanwhile, the number of the tobacco curing frames 4 is not influenced by the added ventilation mechanism, so that the space in the air-curing house is prevented from being occupied when a fin radiator is used.
Preferably, the wind-collecting bin 2 comprises: a hot gas inlet 211, a plurality of hot gas taps 212, and an adaptor box 213; a hollow cavity is arranged in the switching box body 213; a hot air inlet 211 is formed in the upper part of the first side wall of the adapter box body 213, and the hot air inlet 211 is communicated with the cavity; a plurality of hot air branch interfaces 212 are arranged on the lower portion, opposite to the second side wall, of the transfer box body 213, and each hot air branch interface 212 is respectively communicated with the cavity; the extended end of the hot air branched interface 212 is communicated with each branched wind bin 3.
Preferably, the upper part of the first sidewall of the adapter box 213 extends out of the ground 6 and is arranged on the outer sidewall of the lower part of the cigar airing house; the second side wall of the adapting box body 213 is tightly attached to the outer side wall of the cigar airing house; the lower part of the second side wall of the adapting box body 213 extends into the lower part of the cigar airing house and is communicated with one end of the air distributing bin 3 arranged below the bottom surface of the cigar airing house. This arrangement allows hot air to be diverted from the floor 6 to below the floor and to be turned while maintaining the temperature of the hot air.
Preferably, the wind-collecting bin 2 comprises: the heat preservation material layer, the heat preservation material layer pastes and locates on collection wind storehouse 2 lateral wall. The heat preservation effect can be improved according to the arrangement. The heat insulating material layer can be made of heat insulating cotton and the like.
In one embodiment, the hot gas inlet 211 is a larger-sized cylindrical structure, the hot gas taps 212 are a plurality of small cylindrical structures, and the number of the hot gas taps 212 is the same as that of the wind bins 3. The whole wind collecting bin 2 can be made of galvanized plates, and the outer surface of the wind collecting bin is adhered with heat preservation cotton for heat preservation when the wind collecting bin is installed and used.
Preferably, the wind sock 10 includes: a bag body 102, an interface 101; the interface 101 is arranged on the opening end of the bag body 102; the other end of the bag body 102 is a closed end; the bag 102 is provided with a plurality of vent holes 103 at intervals.
The length of the wind pocket 10 is equal to that of the wind groove 12. According to the arrangement, the uniform distribution of hot air at each corner in the airing room can be realized, and the heat transfer efficiency and the heating efficiency are improved.
Preferably, the top surface of the air duct 12 is provided with an opening; the grid cover plate 11 is covered on the open end face of the air duct 12; the air duct 12 is accommodated and arranged below the bottom surface of the cigar airing house; one end of the air duct 12 is an open end and the other end is a closed end; the opening end of the air duct 12 is connected with the air collecting bin 2; the wind bag 10 is accommodated in the wind groove 12, and the opening end of the wind bag 10 is accommodated in the opening end of the wind groove 12 and communicated with the wind collecting bin 2.
According to the arrangement, the supporting, protecting and fixing of the air groove 12 on the soft bag body 102 can be realized, and meanwhile, the connection between the air collecting bin 2 and the air distributing bin 3 can be realized by utilizing the structure of the interface 101.
Examples
Referring to fig. 1-7, the air duct is suitable for a drying room in a heating mode of directly using hot air to heat the drying room, the whole air duct is composed of an air collecting cavity and air dividing bins 3, the air collecting cavity and the air dividing cavities are arranged outside the drying room and are connected with the air dividing bins 3 in the drying room to form an air supply duct together; the air distribution bin 3 is arranged at the bottom of the air-curing room, the air distribution bin 3 is rectangular, the length of the air distribution bin is less than or equal to the length of the air-curing room, the number of the air distribution bins 3 is equal to the bin position of the tobacco loading room 5, and the installation schematic diagram of the air channel in the air-curing room is shown in the following figures 1 and 2. When the heating system operates, hot air is sent into the air collecting cavity, enters the air dividing bin 3 from each outlet of the air collecting cavity, and is uniformly sent out from the bottom plate of the airing room by the air dividing bin 3, so that the airing room is uniformly heated. The air distribution bin 3 mainly comprises an air groove 12, an air bag 10 and a grid cover plate 11, the air bag 10 with the same length as the air groove 12 is placed in the air groove 12, the grid cover plate 11 covers the air groove 12, the air distribution bin 3 is integrally positioned at the lower part of the air-curing house bottom plate, and the grid cover plate 11 is flush with the air-curing house bottom plate after installation.
The air collecting cavity structure is shown in fig. 3, the shape of the air collecting cavity is a square cavity, the two sides of the air collecting cavity are respectively provided with an inlet and an outlet of hot air, the inlet is a large-size cylindrical structure, the outlets are small cylindrical structures with a certain number, and the number of the outlets is the same as that of the air distributing bins 3. The air distribution bin 3 mainly comprises an air groove 12, an air bag 10 and a grid cover plate 11, the structural schematic diagram of the air distribution bin 3 is shown in the following figure 4, the air bag 10 with the same length as the air groove 12 is placed in the air groove 12, the grid cover plate 11 covers the air groove 12, the whole air distribution bin 3 is located on the lower portion of the air-curing house bottom plate, and the grid cover plate 11 is flush with the air-curing house bottom plate after installation is completed.
The wind collecting bin 2 can be made of galvanized plates, and the outer surface of the wind collecting bin is adhered with heat preservation cotton for heat preservation when the wind collecting bin is installed and used. The air groove 12 is of a cuboid groove-shaped structure below the bottom plate of the air drying room, the length of the air groove is smaller than or equal to the length of the air drying room, the air bags 10 can be well placed in the air groove 12, and the number of the air grooves 12 is the same as that of the air distribution bins 3. The wind bag 10 is a cylindrical structure with dense small holes on the periphery, and the wind bag 10 can be made of light cloth such as nylon cloth. During the installation wind bag 10 is direct and the exit linkage in collection wind chamber, and when no wind in the wind bag 10, wind bag 10 is flat form, and when heating system started wind in the wind bag 10, wind bag 10 was bloated naturally, and hot-blast aperture from wind bag 10 evenly scatters out, makes hot-blast evenly spread in the room bottom that dries in the air, then even stretch to the room top that dries in the air, makes whole room temperature that dries in the air even. The grid cover plate 11 is a rectangular plastic plate with grid holes, is placed above the air duct 12, covers the air duct 12, and plays a role in protecting the air duct 12 and the air bag 10. After the grid cover plate 11 is installed, the grid cover plate is flush with the bottom plate of the air-curing house, and when the operation such as cigarette loading and cigarette discharging is carried out, an operator can directly step on the grid cover plate to carry out the operation. When the air-drying room with the air channel is in actual operation, the heat supply equipment sends hot air into the air collecting cavity, the air collecting cavity sends the hot air into the air bags 10 in the air grooves 12, a large amount of hot air is gathered, the air bags 10 are bulged, the hot air is uniformly diffused through the small holes in the air bags 10 and is sent into the air-drying room through the small holes in the grid cover plate 11, the hot air continuously and uniformly spreads from the bottom to the top of the air-drying room to fill the whole air-drying room, and finally the hot air is discharged from the top of the air-drying room and is sent to the heat supply equipment, so that the air-drying room is continuously and circularly heated.
After the air supply duct structure in the embodiment is arranged below the bottom surface of the cigar airing house, the pipeline is connected with the air outlet end of the boiler and the hot air inlet, and then the cigar raw material tobacco leaves are baked.
After the structure is adopted to bake the cigars, the beneficial reactions in the cigars can be promoted, and a better aroma-enhancing effect is achieved.
Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that various changes in the embodiments and/or modifications of the embodiments and/or portions thereof may be made, and all changes in the spirit and scope of the present application should be construed as being covered by the appended claims.
Claims (7)
1. An air supply duct structure of a cigar airing house is characterized by comprising: a wind collecting bin (2) and a plurality of wind distributing bins (3); the wind collecting bin (2) is arranged on the outer side wall of the lower part of the cigar airing room; the outer side wall of the wind collecting bin (2) is provided with a hot wind inlet (1), the opposite side wall of the wind collecting bin (2) is provided with a hot wind outlet, and the hot wind outlets are respectively communicated with the wind distributing bins (3); the air distribution bin (3) is accommodated and arranged below the bottom surface of the cigar airing house; the top surface of the air distribution bin (3) is communicated with the bottom surface of the cigar airing house and is arranged in parallel and level;
the air distribution bin (3) comprises: the wind groove (12), the wind bag (10) and the grid cover plate (11); the air groove (12) is accommodated and arranged below the bottom surface of the cigar airing house; the wind bag (10) is accommodated and laid in the whole wind groove (12); a plurality of vent holes (103) are uniformly distributed on the air bag (10); the grid cover plate (11) is covered on the top surface of the air duct (12) and is arranged in parallel with the bottom surface of the cigar airing house;
after entering each sub-air bin (3) from the air collecting bin (2), the hot air enters the cigar airing room through each air vent on the air bag (10), and the hot air is discharged from an air outlet formed in the side wall of the upper part of the cigar airing room to perform air circulation.
2. The structure of the air delivery duct of cigar-airing houses according to claim 1, wherein the wind-collecting bin (2) comprises: a hot gas inlet (211), a plurality of hot gas interfaces (212) and a switching box body (213); a hollow cavity is arranged in the interior of the switching box body (213); a hot air inlet (211) is formed in the upper part of the first side wall of the switching box body (213), and the hot air inlet (211) is communicated with the cavity; a plurality of hot air branch interfaces (212) are arranged on the lower portion, opposite to the second side wall, of the transfer box body (213), and each hot air branch interface (212) is communicated with the cavity; the extending end of the hot air branch interface (212) is communicated with each wind branch bin (3).
3. The structure of the air supply duct of the cigar-airing house according to claim 2, wherein the upper portion of the first sidewall of the adaptor box (213) is provided on the lower outer sidewall of the cigar-airing house, protruding from the ground (6); the second side wall of the switching box body (213) is tightly attached to the outer side wall of the cigar airing house; the lower part of the second side wall of the switching box body (213) extends into the lower part of the cigar airing house and is communicated with one end of the air distributing bin (3) arranged below the bottom surface of the cigar airing house.
4. The air duct structure of a cigar-airing house according to claim 1, comprising: a tobacco containing chamber (5), a plurality of tobacco racks (4) and a hot air outlet (7); the cigarette racks (4) are arranged in the cigarette containing chamber (5) at intervals and supported on the top surface of the grid cover plate (11); the hot air outlet (7) is arranged on the side wall of the top of the airing room and is communicated with the inside of the airing room.
5. The structure of the air delivery duct of cigar-airing houses according to claim 1, wherein the wind-collecting bin (2) comprises: the heat insulation material layer is attached to the outer side wall of the wind collection bin (2).
6. The structure of the air delivery duct of cigar-airing houses according to claim 1, wherein the air bag (10) comprises: a bag body (102) and an interface (101); the interface (101) is arranged on the opening end of the bag body (102); the other end of the bag body (102) is a closed end; the bag body (102) is provided with a plurality of vent holes (103) at intervals.
7. The structure of the air supply duct of the cigar airing house according to claim 6, wherein the top surface of the air duct (12) is provided with an opening; the grid cover plate (11) is arranged on the open end face of the air duct (12) in a covering manner; the wind groove (12) is accommodated and arranged below the bottom surface of the cigar airing house; one end of the air duct (12) is an open end, and the other end is a closed end; the opening end of the air duct (12) is connected with the air collecting bin (2); the wind bag (10) is accommodated in the wind groove (12), and the open end of the wind bag (10) is accommodated in the open end of the wind groove (12) and communicated with the wind collecting bin (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202220281944.0U CN216770124U (en) | 2022-02-11 | 2022-02-11 | Air supply duct structure of cigar airing house |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220281944.0U CN216770124U (en) | 2022-02-11 | 2022-02-11 | Air supply duct structure of cigar airing house |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114413611A (en) * | 2022-02-11 | 2022-04-29 | 云南省烟草农业科学研究院 | Air supply duct structure of cigar airing house |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114413611A (en) * | 2022-02-11 | 2022-04-29 | 云南省烟草农业科学研究院 | Air supply duct structure of cigar airing house |
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