CN110959549A - Henhouse and air environment adjusting method thereof - Google Patents
Henhouse and air environment adjusting method thereof Download PDFInfo
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- CN110959549A CN110959549A CN201911346332.4A CN201911346332A CN110959549A CN 110959549 A CN110959549 A CN 110959549A CN 201911346332 A CN201911346332 A CN 201911346332A CN 110959549 A CN110959549 A CN 110959549A
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 241000287828 Gallus gallus Species 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 11
- 230000009286 beneficial effect Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 4
- 241000699670 Mus sp. Species 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- 230000002411 adverse Effects 0.000 abstract description 3
- 108091006146 Channels Proteins 0.000 description 64
- 235000013330 chicken meat Nutrition 0.000 description 13
- 230000008676 import Effects 0.000 description 13
- 238000009423 ventilation Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000384 rearing effect Effects 0.000 description 3
- 230000008645 cold stress Effects 0.000 description 2
- 230000008642 heat stress Effects 0.000 description 2
- 244000144977 poultry Species 0.000 description 2
- 235000013594 poultry meat Nutrition 0.000 description 2
- 230000002277 temperature effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K31/00—Housing birds
- A01K31/002—Poultry cages, e.g. transport boxes
- A01K31/005—Battery breeding cages, with or without auxiliary features, e.g. feeding, watering, demanuring, heating, ventilation
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/0047—Air-conditioning, e.g. ventilation, of animal housings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/0047—Air-conditioning, e.g. ventilation, of animal housings
- A01K1/0058—Construction of air inlets or outlets in roofs
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Birds (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a henhouse and an air environment adjusting method thereof.A henhouse air environment adjusting system comprises a wet curtain, an exhaust fan and an underground air inlet channel, wherein the underground air inlet channel comprises a plurality of air channel outlets, at least one air channel inlet and an air channel, the air channel outlets are arranged in a henhouse main body chamber, the air channel inlets are arranged outside the henhouse main body chamber and are higher than the ground level to prevent rainwater from flowing into the air channel inlets, a rain-proof cap is arranged above the air channel inlets to prevent rain, snow and sundries from falling into the air channel inlets, and the air channel is arranged underground and is used for communicating the air channel outlets and the air channel inlets. A henhouse air environment adjusting method comprises the following steps: a. setting an air inlet mode switching temperature threshold value X; b. and selecting an air inlet mode for air environment regulation. It can avoid adverse effect to the indoor air replacement of chicken coop under the bad weather, and the air replacement is efficient, has characteristics such as temperature regulation function concurrently.
Description
Technical Field
The invention relates to the technical field of henhouse air environment regulation.
Background
The stacked layer type layer cage-rearing mode has the advantages of improving the utilization rate of houses and land, reducing the rearing cost, effectively improving the labor productivity and the like, is developed by combining a totally-closed environment control mode, forms a set of layer intensive and high-benefit rearing management mode, and is popular with producers. The poultry cage-rearing device basically meets the biological habit requirements (health and production) of chicken flocks, is the chicken-rearing device with the highest scientific and technological content and electromechanical integration degree in the current similar cage-rearing mechanical devices in China, and represents the development direction of poultry rearing mechanization in China. In production, people seek higher production efficiency, the width and the length of the henhouse are increased, the single-span feeding amount is increased, but the henhouse depends on a traditional longitudinal ventilation mode, harmful gas, dust and the like cannot be discharged in time, the air quality does not reach the standard, the production performance is reduced, the death and culling rate is high, the ventilation is realized through a window, when severe weather such as rain, snow, wind and wind is met, heat stress or cold stress can be generated on chicken bodies due to invasion of wind, snow and rainwater, the henhouse is large in scale, time and labor are wasted through emergency measures of opening and closing the window, air circulation can be realized only between the front window and the rear window and an exhaust fan due to window ventilation through the window, and for a space below a window of the henhouse, good air circulation cannot be formed, the air environment regulation effect is poor, and the air environment of chickens in the henhouse in the.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a henhouse and an air environment adjusting method thereof, which can avoid adverse effects on indoor air replacement of the henhouse in severe weather, have high air replacement efficiency, have the characteristics of temperature adjusting function and the like.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a henhouse comprises a henhouse main body mainly composed of a left end transverse wall, a right end transverse wall, a front side longitudinal wall, a rear side longitudinal wall and a ceiling, and an air environment adjusting system for adjusting the indoor air environment of the henhouse main body, wherein the air environment adjusting system comprises a wet curtain and an exhaust fan, the wet curtain is arranged on the right end transverse wall and/or the front side longitudinal wall and/or the rear side longitudinal wall which are close to the right end transverse wall, the exhaust fan is arranged on the left end transverse wall, the air environment adjusting system also comprises an underground air inlet channel, the underground air inlet channel comprises a plurality of air channel outlets, at least one air channel inlet and an air channel, the plurality of air channel outlets are arranged in the henhouse main body chamber and are divided into one row or a plurality of rows at intervals along the longitudinal direction of the henhouse main body chamber, the air channel outlets are provided with air channel outlet convex edges which are higher than the floor in the henhouse main body chamber so as to prevent sewage from flowing, the wind channel import sets up outside the chicken coop main part, and is higher than the ground level setting to in preventing that the rainwater from flowing into the wind channel import, rain-proof cap of installation above the wind channel import, in preventing that sleet and debris from falling into the wind channel import, the wind channel setting is in the underground, is used for each wind channel export of intercommunication and wind channel import.
The invention further improves that:
the convex edge of the air duct outlet arranged on the periphery of each air duct outlet is slightly higher than the ground so as to be convenient for walking and passing, and the metal grate is arranged on each air duct outlet so as to prevent sundries and mice from entering the air duct outlet.
The underground air inlet channel also comprises a dirt collecting structure, the dirt collecting structure comprises a vertical shaft and a dirt collecting pit, the top of the vertical shaft is communicated with an air channel outlet, a pipeline connecting hole is formed in the position, close to the bottom, of the vertical shaft, and the dirt collecting pit is formed in the position, below the pipeline connecting hole, in the vertical shaft; the wind channel comprises a plurality of wind channels of dividing, and each wind channel of dividing comprises the horizontal pipe of level setting in the underground and the wind channel import connecting pipe of vertical setting, and the inner end and the filth collection hole of violently managing pass through the pipe connection hole intercommunication, and the outer end of violently managing and the bottom intercommunication of wind channel import connecting pipe, and the top of wind channel import connecting pipe is the wind channel import, and each horizontal pipe of dividing the wind channel transversely parallel arrangement.
The transverse width of the henhouse main body is 12-18 m, the longitudinal length of the henhouse main body is 60-100 m, the outer diameter of a connecting pipe between the transverse pipe and an air duct inlet is 60-80 cm, the cross section of a vertical shaft of the dirt collecting structure is square, and the side length of the vertical shaft is 60-80 cm; the air duct inlets are respectively arranged at the left side and the right side of the henhouse main body chamber, the air duct outlets are divided into four rows along the longitudinal direction of the henhouse main body chamber, the air duct outlets in the two rows at the left side are transversely arranged in parallel and are respectively communicated with one corresponding air duct inlet at the left side of the henhouse main body chamber through the air dividing ducts, and the air duct outlets in the two rows at the right side are transversely arranged in parallel and are respectively communicated with one corresponding air duct inlet at the right side of the henhouse main body chamber through the air dividing ducts; the outlets of the air ducts in the two rows on the left side and the outlets of the air ducts in the two rows on the right side are arranged at intervals of 8-10 m in the longitudinal direction, and the depth of the transverse pipes of the air ducts from the ground is 100-150 cm.
A henhouse air environment adjusting method comprises the following steps:
a. setting an air inlet mode switching temperature threshold value X, determining an optimal environment temperature value beneficial to chicken growth according to the life habits of the chicken, and taking the optimal environment temperature value as the air inlet mode switching threshold value X;
b. selecting an air inlet mode for air environment adjustment, monitoring the air temperature T in the henhouse in real time through a temperature transmitter PT, controlling a butterfly valve 15 to close an underground air inlet channel when T is larger than X, controlling a wet curtain to be opened, adjusting the air environment of the henhouse in the wet curtain air inlet mode, and cooling the henhouse chamber by utilizing the evaporation and refrigeration effect of the wet curtain air inlet; when T is less than X, the butterfly valve is controlled to open the underground air inlet channel, the wet curtain is controlled to be closed, and air environment adjustment is carried out on the henhouse in an air inlet mode of the underground air inlet channel.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
when the temperature of the henhouse is higher, closing an underground air inlet channel, simultaneously controlling the opening of a wet curtain, allowing air to enter the henhouse from the wet curtain on the transverse wall at the left end under the action of an exhaust fan, discharging the air out of the henhouse from a fan on the wall at the right end, longitudinally flowing air flow through the henhouse to adjust the air environment of the henhouse, and simultaneously cooling the henhouse by utilizing the evaporation refrigeration effect of the wet curtain when air enters the henhouse; when the temperature of the henhouse is lower, the underground air inlet channel is opened, the wet curtain is controlled to be closed, the air environment of the henhouse is adjusted by adopting an air inlet mode of the underground air inlet channel, air enters the henhouse from an air channel outlet at the bottom of the henhouse and then is discharged out of the henhouse by a fan on the right end wall, airflow longitudinally flows through the henhouse to adjust the air environment of the henhouse, the problems that only ventilation can be carried out between a front window and a rear window by adopting window ventilation, the air environment of chickens in the henhouse in a space below the windows cannot be improved well are solved, and meanwhile, the ventilation by adopting the windows is solved, the heat stress or cold stress can be generated on the chicken body when wind, snow and rain are invaded, the emergency operation of closing the window in severe weather is not needed, and due to the underground constant temperature effect, the air in the underground air inlet channel can be heated to a certain degree in winter, so that the energy-saving effect is achieved.
It can avoid adverse effect to the indoor air replacement of chicken coop under the bad weather, and the air replacement is efficient, has characteristics such as temperature regulation function concurrently.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the air environment conditioning system of FIG. 1;
FIG. 3 is a schematic structural view of the positional relationship of the duct outlets of FIG. 2 with the henhouse area and the coop area;
FIG. 4 is a schematic structural diagram of an underground air intake duct of FIG. 2 with the intake opening at the left side of the chicken house;
FIG. 5 is a schematic structural diagram of an underground air intake duct of FIG. 2 with the intake port on the right side of the chicken house;
in the drawings: 1. a left end transverse wall; 2. a right end transverse wall; 3. a front side longitudinal wall; 4. a ceiling; 5. wet curtain; 6. an exhaust fan; 7. an air duct inlet; 8. rain-proof caps; 9. a metal grate; 10. a shaft; 11. a dirt collection pit; 12. a pipe connecting hole; 13. a transverse tube; 14. an air duct inlet connecting pipe; 15. a butterfly valve; 16. the outlet of the air duct is provided with a convex edge.
Detailed Description
The invention will be described in further detail below with reference to the figures and specific examples.
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the description of the attached drawings, and the specific connection mode of each part adopts the conventional means of mature bolts, rivets, welding, sticking and the like in the prior art, and the detailed description is not repeated.
The utility model provides a henhouse, include mainly by the left end diaphragm wall 1, the right-hand member diaphragm wall 2, the front side vertical wall 3, the henhouse main part that rear side vertical wall and ceiling 4 constitute for adjust the air circumstance governing system of the indoor air circumstance of henhouse main part, air circumstance governing system includes wet curtain 5 and air exhauster 6, wet curtain 5 sets up on the right-hand member diaphragm wall 2 and/or be close to the front side vertical wall 3 and/or the rear side vertical wall of right-hand member diaphragm wall 2, air exhauster 6 sets up on the left end diaphragm wall 1, its characterized in that: the air environment conditioning system further comprises an underground air inlet channel, the underground air inlet channel comprises a plurality of air channel outlets, at least one air channel inlet 7 and an air channel, the air channel outlets are arranged in the henhouse main body chamber and are divided into one row along the longitudinal direction of the henhouse main body chamber, the two rows or the plurality of rows of air channel outlets are arranged at intervals, the air channel outlets are provided with air channel outlet convex edges 8 higher than the indoor floor of the henhouse main body chamber, sewage flows into the air channel outlets when the henhouse main body chamber is cleaned, the air channel inlet 7 is arranged outside the henhouse main body chamber and is higher than the ground level, rainwater is prevented from flowing into the air channel inlet 7, a rain-proof cap 8 is arranged above the air channel inlet 7, rain and snow and sundries are prevented from falling into the air channel inlet 7, the air channel is arranged underground and is.
The air duct outlet convex edge 16 arranged on the periphery of each air duct outlet is slightly higher than the ground so as to be convenient for walking and passing, and the metal grate 9 is arranged on each air duct outlet so as to prevent sundries and mice from entering the air duct outlet.
The underground air inlet channel further comprises a dirt collecting structure, the dirt collecting structure comprises a vertical shaft 10 and a dirt collecting pit 11, the top of the vertical shaft 10 is communicated with an air channel outlet, a pipeline connecting hole 12 is formed in the position, close to the bottom, of the vertical shaft 10, and the dirt collecting pit 11 is formed in the position, located below the pipeline connecting hole 12, in the vertical shaft 10; the wind channel comprises a plurality of wind channels of dividing, and each wind channel of dividing comprises horizontal pipe 13 and the wind channel import connecting pipe 14 of vertical setting that the level set up in the underground, and the inner end and the filth collection pit 11 of horizontal pipe 13 pass through pipe connection hole 12 intercommunication, and the outer end of horizontal pipe 13 and the bottom of wind channel import connecting pipe 14 communicate, and the top of wind channel import connecting pipe 14 is wind channel import 7, and each horizontal pipe 13 of dividing the wind channel transversely parallel arrangement.
The transverse width of the henhouse main body is 12-18 m, the longitudinal length of the henhouse main body is 60-100 m, the outer diameter of a transverse pipe 13 and an air duct inlet connecting pipe 14 is 60-80 cm, the cross section of a vertical shaft 10 of the dirt collecting structure is square, and the side length of the vertical shaft is 60-80 cm; the air duct inlets 7 are respectively arranged at the left side and the right side of the henhouse main body chamber, the air duct outlets are divided into four rows along the longitudinal direction of the henhouse main body chamber, the air duct outlets in the two rows at the left side are transversely arranged in parallel and are respectively communicated with one corresponding air duct inlet 7 at the left side of the henhouse main body chamber through the air duct self-dividing channels, and the air duct outlets in the two rows at the right side are transversely arranged in parallel and are respectively communicated with one corresponding air duct inlet 7 at the right side of the henhouse main body chamber through the air duct self-dividing channels; the outlets of the air ducts in the two rows on the left side and the outlets of the air ducts in the two rows on the right side are arranged at intervals of 8-10 m in the longitudinal direction, and the depth of the transverse pipe 13 of each air dividing duct from the ground is 100-150 cm.
A henhouse air environment adjusting method comprises the following steps:
a. setting an air inlet mode switching temperature threshold value X, determining an optimal environment temperature value beneficial to chicken growth according to the life habits of the chicken, and taking the optimal environment temperature value as the air inlet mode switching threshold value X;
b. selecting an air inlet mode for air environment adjustment, monitoring the air temperature T in the henhouse in real time through a temperature transmitter PT, controlling a butterfly valve 15 to close an underground air inlet channel when T is larger than X, controlling a wet curtain to be opened, adjusting the air environment of the henhouse in the wet curtain air inlet mode, and cooling the henhouse chamber by utilizing the evaporation and refrigeration effect of the wet curtain air inlet; when T is less than X, the control butterfly valve 15 opens the underground air inlet channel, controls the wet curtain to close, adopts the air inlet mode of the underground air inlet channel to adjust the air environment of the henhouse, and has a certain warming effect on the air in the underground air inlet channel in winter due to the underground constant temperature effect, thereby achieving the energy-saving effect.
Claims (5)
1. The utility model provides a henhouse, includes the henhouse main part that mainly comprises left end horizontal wall (1), right-hand member horizontal wall (2), front side vertical wall (3), rear side vertical wall and ceiling (4) for adjust the indoor air circumstance's of henhouse main part air environment governing system, air circumstance governing system includes wet curtain (5) and air exhauster (6), wet curtain (5) set up at right-hand member horizontal wall (2) and/or be close to front side vertical wall (3) and/or the rear side vertical wall of right-hand member horizontal wall (2), air exhauster (6) set up on left end horizontal wall (1), its characterized in that: the air environment adjusting system also comprises an underground air inlet channel, the underground air inlet channel comprises a plurality of air channel outlets, at least one air channel inlet (7) and an air channel, the air channel outlets are arranged in the henhouse main body chamber, and is divided into one row, two rows or a plurality of rows at intervals along the longitudinal direction of the henhouse main body chamber, the air duct outlet is provided with an air duct outlet convex edge (16) which is higher than the floor in the henhouse main body chamber, so as to prevent sewage from flowing into the air duct outlet when the henhouse main body is cleaned indoors, the air duct inlet (7) is arranged outdoors of the henhouse main body and is arranged higher than the ground level to prevent rainwater from flowing into the air duct inlet (7), a rain-proof cap (8) is arranged above the air duct inlet (7) to prevent rain, snow and sundries from falling into the air duct inlet (7), the air duct is arranged underground and used for communicating the air duct outlets with the air duct inlet (7).
2. A chicken coop as defined in claim 1, wherein: the air duct outlet convex edge (16) arranged on the periphery of each air duct outlet is slightly higher than the ground so as to be convenient for walking and passing, and the metal grate (9) is arranged on each air duct outlet so as to prevent sundries and mice from entering the air duct outlet.
3. A henhouse according to claim 1 or 2, characterized in that: the underground air inlet channel further comprises a dirt collecting structure, the dirt collecting structure comprises a vertical shaft (10) and a dirt collecting pit (11), the top of the vertical shaft (10) is communicated with the air channel outlet, a pipeline connecting hole (12) is formed in the position, close to the bottom, of the vertical shaft (10), and the dirt collecting pit (11) is formed in the position, below the pipeline connecting hole (12), in the vertical shaft (10); the air flue is composed of a plurality of air flue distributing channels, each air flue distributing channel is composed of a horizontal pipe (13) horizontally arranged underground and a vertically arranged air flue inlet connecting pipe (14), the inner end of the horizontal pipe (13) is communicated with the dirt collecting pit (11) through a pipeline connecting hole (12), the outer end of the horizontal pipe (13) is communicated with the bottom end of the air flue inlet connecting pipe (14), the top end of the air flue inlet connecting pipe (14) is provided with an air flue inlet (7), and the horizontal pipes (13) of the air flue distributing channels are transversely arranged in parallel.
4. A chicken coop as defined in claim 3, wherein: the transverse width of the henhouse main body is 12-18 m, the longitudinal length of the henhouse main body is 60-100 m, the outer diameter of the transverse pipe (13) and the air duct inlet connecting pipe (14) is 60-80 cm, the cross section of a vertical shaft (10) of the dirt collecting structure is square, and the side length of the vertical shaft is 60-80 cm; the air duct inlets (7) are respectively arranged at the left side and the right side of the henhouse main body chamber, the air duct outlets are divided into four rows along the longitudinal direction of the henhouse main body chamber, the air duct outlets in the two rows at the left side are transversely arranged in parallel and are respectively communicated with the corresponding air duct inlet (7) at the left side of the henhouse main body chamber through the air duct, and the air duct outlets in the two rows at the right side are transversely arranged in parallel and are respectively communicated with the corresponding air duct inlet (7) at the right side of the henhouse main body chamber through the air duct; the outlets of the air ducts in the two rows on the left side and the outlets of the air ducts in the two rows on the right side are arranged at intervals of 8-10 m in the longitudinal direction, and the depth of the transverse pipe (13) of each air dividing duct from the ground is 100-150 cm.
5. A henhouse air environment conditioning method, characterized in that it comprises the following steps:
a. setting an air inlet mode switching temperature threshold value X, determining an optimal environment temperature value beneficial to chicken growth according to the life habits of the chicken, and taking the optimal environment temperature value as the air inlet mode switching threshold value X;
b. selecting an air inlet mode for air environment adjustment, monitoring the air temperature T in the henhouse in real time through a temperature transmitter PT, controlling a butterfly valve 15 to close an underground air inlet channel when T is larger than X, controlling a wet curtain to be opened, adjusting the air environment of the henhouse in the wet curtain air inlet mode, and cooling the henhouse chamber by utilizing the evaporation and refrigeration effect of the wet curtain air inlet; when T is less than X, the butterfly valve 15 is controlled to open the underground air inlet channel, the wet curtain is controlled to be closed, and air environment adjustment is carried out on the henhouse in an air inlet mode of the underground air inlet channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911346332.4A CN110959549A (en) | 2019-12-24 | 2019-12-24 | Henhouse and air environment adjusting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911346332.4A CN110959549A (en) | 2019-12-24 | 2019-12-24 | Henhouse and air environment adjusting method thereof |
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| CN110959549A true CN110959549A (en) | 2020-04-07 |
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| CN201911346332.4A Pending CN110959549A (en) | 2019-12-24 | 2019-12-24 | Henhouse and air environment adjusting method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111789030A (en) * | 2020-05-29 | 2020-10-20 | 清远市智慧农业研究院 | Livestock and poultry house dehumidification cooling system |
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2019
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| CN111789030A (en) * | 2020-05-29 | 2020-10-20 | 清远市智慧农业研究院 | Livestock and poultry house dehumidification cooling system |
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