CN115104537A - Chimney type mixed air inlet machine and ventilation mode thereof - Google Patents

Chimney type mixed air inlet machine and ventilation mode thereof Download PDF

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Publication number
CN115104537A
CN115104537A CN202210852433.4A CN202210852433A CN115104537A CN 115104537 A CN115104537 A CN 115104537A CN 202210852433 A CN202210852433 A CN 202210852433A CN 115104537 A CN115104537 A CN 115104537A
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CN
China
Prior art keywords
air
shell
air valve
air inlet
mode
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Pending
Application number
CN202210852433.4A
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Chinese (zh)
Inventor
彭波
常翠
李滋红
张亮
于含刚
张立森
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Qingdao Hailan Environmental Equipment Co ltd
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Qingdao Hailan Environmental Equipment Co ltd
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Priority to CN202210852433.4A priority Critical patent/CN115104537A/en
Publication of CN115104537A publication Critical patent/CN115104537A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00Housing animals; Equipment therefor
    • A01K1/0047Air-conditioning, e.g. ventilation, of animal housings

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Air-Flow Control Members (AREA)

Abstract

The invention provides a chimney type mixed air inlet machine and a ventilation mode thereof, wherein the chimney type mixed air inlet machine comprises: the rain hat device is used for allowing outside air to enter; the wind gathering barrel device comprises a wind gathering shell arranged at the bottom of the rain hat device; the air valve device comprises an air valve shell, wherein an air valve body is arranged in the air valve shell; the air duct device comprises an air duct shell for connecting the air collecting shell and an air duct shell; the host device comprises a host shell, a fan is arranged in the host shell, and the host shell and the fan shell are connected through a connecting plate; the mixing device comprises a mixing adjusting cylinder sleeved outside the connecting plate; the flow guide device comprises a flow guide plate which is connected and arranged below the main machine shell and is used for guiding and diffusing the neutralized wind into a room, so that the flow guide device is divided into an A mode for winter, a B mode for summer and a C mode for spring and autumn according to temperature change, and the modes are switched by adjusting gaps among the wind valve body, the mixing adjusting cylinder, the flow guide plate and the main machine shell.

Description

Chimney type mixed air inlet machine and ventilation mode thereof
Technical Field
The invention belongs to the technical field of ventilation equipment, and particularly relates to a chimney type mixed air inlet machine and a ventilation mode thereof.
Background
At present, a chimney type air inlet machine is provided, and the patent application numbers thereof are: 201520156959.4. the chimney type air inlet machine comprises a main machine seat and an air pipe seat, wherein the main machine seat and the air pipe seat are connected through an electric actuator, the electric actuator comprises a lifting column and a lifting platform, and the main machine seat is arranged on the lifting platform; an indoor air pipe is arranged at the lower part of the main machine seat, an air pipe is arranged at the upper part of the air pipe seat, an outdoor air inlet is arranged at the top of the air pipe, and a butterfly valve assembly is arranged in the air pipe; the joint of the main machine seat and the air pipe seat is an indoor air return inlet, and the bottom of the main machine seat is an air outlet; a guide plate is arranged at the air outlet; the upper end of the air inlet is provided with a rain cover, and the air inlet is provided with a bird-proof net; the indoor air pipe is internally provided with a fan. The product replaces a preheating device in the prior art, simplifies the structure of the air inlet machine and reduces the energy consumption; the flow of hot air can be controlled by adjusting the distance between the air pipe seat and the main machine seat, and the flow of cold air is controlled by adjusting the butterfly valve component in the air pipe, so that the operation is convenient, and a better cold and hot mixing effect is realized; the rain cover and the bird prevention net are arranged, so that the influence of the external environment on the air inlet machine is reduced; the indoor air pipe is provided with a fan, so that the ventilation speed can be adjusted according to the requirement; the air is diffused on four sides through the guide plates, and uniform ventilation is guaranteed.
However, in the market at present, a winter ventilation mode particularly suitable for livestock houses in cold regions is not available, and condensation is easily caused because outdoor cold air and indoor hot air of the livestock houses in the cold regions are in direct contact. Moist air can increase heat transfer, so that heat of the livestock is easy to dissipate at low temperature and high humidity, and cold stress is stronger; the pathogen is propagated too fast due to the overhigh humidity, so that the livestock is easy to get ill, the production efficiency is reduced, and the breeding cost is increased. The existing chimney type air inlet machine has the defects of high production cost, complex structure, difficult synchronous adjustment, difficult concrete realization, low air flow organization layout efficiency and the like.
Disclosure of Invention
The invention provides a chimney type mixed air inlet machine and a ventilation mode thereof, which solve the problems.
The technical scheme of the invention is realized as follows: a chimney type mixing air inlet machine comprises:
the rain-proof cap device comprises a cap;
the wind gathering barrel device comprises a wind gathering shell and is arranged at the bottom of the rain hat device;
the air valve device comprises an air valve shell, an air valve body is arranged in the air valve shell, and the air inlet amount is controlled by opening and closing the air valve body;
the air duct device comprises an air duct shell and is used for connecting the air collecting shell and an air duct shell;
the host device comprises a host shell, wherein a fan is arranged in the host shell, and the host shell and the fan shell are connected through a connecting plate;
the mixing device comprises a mixing adjusting cylinder sleeved outside the connecting plate, and the mixing adjusting cylinder moves up and down relative to the connecting plate and is used for controlling the air inlet amount;
and the flow guide device comprises a flow guide plate which is connected and arranged below the main machine shell and is used for guiding and diffusing wind indoors.
As a preferred embodiment, the rain hat device further comprises a bird-proof net, which is enclosed between the cap and the wind-gathering shell, and outside air enters from the bird-proof net.
In a preferred embodiment, the cross-sectional area of the top end of the wind-collecting casing is larger than the cross-sectional area of the bottom end of the wind-collecting casing.
As a preferred embodiment, the air valve device further comprises an air valve actuator fixedly arranged on the outer side of the air valve housing, and the air valve actuator and the air valve body are in transmission connection.
As a preferred embodiment, the cross-sectional area of the bottom end of the main machine shell is larger than that of the top end of the main machine shell, the fan comprises a driving motor, the driving motor and the inner wall of the main machine shell are fixedly connected through a fixing frame, the bottom end of the driving motor is provided with a rotating shaft, and blades are fixedly arranged on the outer side of the bottom end of the rotating shaft.
As a preferred embodiment, a connecting pipe is connected between the deflector and the main machine housing, and the top end of the connecting pipe penetrates through the main machine housing and is fixedly arranged through a B-shaped pin.
As a preferred embodiment, the top surface of the diversion disc is provided with a plurality of diversion trenches uniformly distributed along the circumference, the longitudinal sectional area of the middle part of each diversion trench is smaller than that of the edge part of each diversion trench, and the middle part of the diversion disc is integrally connected with a protrusion part.
As a preferred embodiment, the upper part of the air duct device is arranged outdoors, the lower part of the air duct device is arranged indoors, and the outside air enters from the air inlet through hole, passes through the air collecting device, the air duct device, the air valve device, the host device and the flow guide device, and is dispersed indoors.
As a preferred embodiment, the outside of the air valve shell is correspondingly provided with a pulley assembly, a nylon rope is guided and arranged on the outside of the pulley assembly, one end of the nylon rope is fixedly connected with the mixing adjusting cylinder, the other end of the nylon rope is fixedly connected with a steel wire rope, and the steel wire rope pulls the mixing adjusting cylinder to move up and down through an electric push rod.
A ventilation mode of a chimney type mixed air inlet machine is characterized in that the ventilation mode is divided into an A mode, a B mode and a C mode according to temperature change;
the mode A is used in winter, the opening degree of the air valve body is small, the opening degree of the mixing adjusting cylinder is large, and the gap between the flow guide disc and the main machine shell is small;
the mode B is used in summer, the opening degree of the air valve body is large, the opening degree of the mixing adjusting cylinder is small, and the gap between the flow guide disc and the main machine shell is large;
the C mode is used for spring and autumn, and the aperture of blast gate body is half-open, the aperture of mixing adjustment section of thick bamboo is half-open.
After the technical scheme is adopted, the invention has the beneficial effects that:
1. the fresh air and the indoor warm air are effectively mixed, the condensation phenomenon in cold areas can be solved, the continuous accumulation of indoor humidity (pathogen is propagated too fast due to overhigh humidity, so that livestock are easy to get ill, the production efficiency is reduced, the breeding cost is increased, the heat transfer is increased due to humid air, the heat of the livestock is easy to dissipate in low-temperature and high-humidity conditions, the cold stress is stronger), and the heating cost is reduced.
2. The mixing proportion of the fresh air and the indoor warm air is controlled, so that the temperature of the airflow at the outlet of the fan can be adjusted, and the cold stress of animals caused by the direct action of cold air on the livestock can be avoided; meanwhile, the air supply distance can be controlled by adjusting the gap between the flow guide disc and the host module, so that the number of fans is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention in mode A;
FIG. 2 is a schematic view of the structure of the present invention in mode B;
FIG. 3 is a schematic structural diagram of the present invention in mode C;
FIG. 4 is a schematic view showing the effect of the airflow in the poultry house in mode A;
fig. 5 is a schematic view showing the effect of the airflow in the poultry house in the B mode.
In the figure, 1-the flow guiding device; 2-a host device; 3-a mixing device; 4-a damper device; 5-an air duct device; 6-wind barrel gathering device; 7-rain hat device; 11-a flow guiding disc; 31-a mixing and adjusting cylinder; 41-air valve body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5, a chimney type mixing air inlet machine includes:
the rain-proof cap device 7 comprises a cap;
the wind gathering barrel device 6 comprises a wind gathering shell and is arranged at the bottom of the rain hat device 7;
the air valve device 4 comprises an air valve shell, wherein an air valve body 41 is arranged in the air valve shell, and the air inlet quantity is controlled by opening and closing the air valve body 41;
the air duct device 5 comprises an air duct shell and is used for connecting the air collecting shell and an air duct shell;
the host device 2 comprises a host shell, a fan is arranged in the host shell, and the host shell and the fan shell are connected through a connecting plate;
the mixing device 3 comprises a mixing adjusting cylinder 31 sleeved outside the connecting plate, and the mixing adjusting cylinder 31 moves up and down relative to the connecting plate and is used for controlling the air inlet amount;
the flow guide device 1 comprises a flow guide plate which is connected and arranged below the main machine shell and is used for guiding and diffusing wind indoors.
The rain hat device 7 further comprises a bird-proof net which is arranged between the cover cap and the wind-gathering shell in a surrounding mode, and outside air enters from the bird-proof net. The cover cap of the rain-proof cap is used for protecting in rainy days and preventing birds from entering the air inlet by mistake.
The cross sectional area of the top end of the wind-collecting shell is larger than that of the bottom end of the wind-collecting shell.
The air valve device 4 further comprises an air valve actuator fixedly arranged on the outer side of the air valve shell, and the air valve actuator and the air valve body 41 are in transmission connection. The invention adjusts the opening degree of the air valve body 41 by changing the 0-10V control signal of the air valve actuator.
The cross-sectional area of host computer casing bottom is greater than the cross-sectional area setting on top, the fan includes driving motor, sets up through mount fixed connection between the inner wall of driving motor and host computer casing, and driving motor's bottom is provided with the pivot, and the outside of pivot bottom is fixed and is provided with the blade.
The flow guide disc 11 and a connecting pipe is connected between the main machine shell, and the top end of the connecting pipe penetrates through the main machine shell and then is fixedly arranged through a B-shaped pin.
The top surface of the diversion disk 11 is equally provided with a plurality of diversion trenches along the circumference, the longitudinal sectional area of the middle part of each diversion trench is smaller than that of the edge part of each diversion trench, and the middle part of the diversion disk 11 is integrally connected with a convex part.
The part above the wind cylinder device is arranged outdoors, the part below the wind cylinder device is arranged indoors, and after entering through the air inlet through holes, the outside air is dispersed indoors after respectively passing through the wind gathering device, the wind cylinder device, the air valve device 4, the host device 2 and the flow guide device 1.
The lateral wall correspondence of blast gate casing is provided with loose pulley assembly, loose pulley assembly's the outside is led and is equipped with the nylon rope, loose pulley assembly includes a plurality of pulley, a plurality of pulley is all fixed to be set up in the outside of blast gate casing, the nylon rope loops through the lateral wall through the pulley, the transformation of direction carries out, for the common technical means among the prior art, consequently here no longer does too much repeated description, the one end of nylon rope with fixed connection between the mixed regulation section of thick bamboo 31, the other end and the wire rope fixed connection of nylon rope, wire rope reciprocates through electric putter pulling mixed regulation section of thick bamboo 31, through electric putter pulling steel cable, the technique that makes the nylon rope carry out the lift also is the common technical means among the prior art, consequently here no longer does too much repeated description.
The invention pulls the master control steel wire ropes of a plurality of air inlet machines through the electric push rod, so that the nylon rope of a single air inlet machine fixed on the steel wire rope is displaced, then the displacement of the nylon rope is changed in direction through the pulley block fixed on the side wall of the air valve shell and is transmitted to the mixing adjusting cylinder 31, which shows that the opening of the mixing adjusting cylinder 31 is changed, thereby controlling the indoor warm air content entering the fan and exchanging heat with fresh cold air.
The invention drives the blades to rotate by electrifying the driving motor, so that outdoor fresh cold air sequentially passes through the rain-proof cap device 7, the air collecting barrel device 6, the air barrel device 5, the air valve device 4, the mixing device 3 and the host device 2 and is divided into different directions in the house by the flow guide disc 11. The fresh cold air passes through the air valve device 4, the air volume is different due to different opening degrees of the air valve body 41, then when the fresh cold air passes through the mixing device 3, the content of indoor warm air mixed with the fresh cold air entering from the position is different due to different opening degrees of the mixing adjusting cylinder 31, namely the moving position of the mixing adjusting cylinder 31 relative to the connecting plate, so that the temperature of the mixed neutralized air is changed, namely heat exchange is carried out between the air and the fresh cold air, then the neutralized air reaches the diversion device 1 through the host device 2, and then the neutralized air is uniformly distributed into the house through special flow channels in all directions on the diversion disc 11, namely the diversion grooves change the neutralized air to the rear.
A ventilation mode of a chimney type mixed air inlet machine is divided into an A mode, a B mode and a C mode according to temperature change;
the mode a is used in winter, the opening degree of the air valve body 41 is small, the opening degree of the mixing adjusting cylinder 31 is large, and the gap between the deflector 11 and the main machine shell is small;
the mode B is used in summer, the opening degree of the air valve body 41 is large, the opening degree of the mixing adjusting cylinder 31 is small, and the gap between the flow guide disc 11 and the main machine shell is large;
the C mode is used in spring and autumn, the opening of the air valve body 41 is half open, and the opening of the mixing adjustment cylinder 31 is half open.
Fresh cold air entering from the outside is influenced by three adjustable change points, namely the opening degree of the air valve body 41, the opening degree of the mixing adjusting cylinder 31 and the gap between the flow guide disc 11 and the host device 2. The opening degree of the air valve body 41 is reduced along with the reduction of the temperature of the outdoor fresh cold air, so that the fresh cold air entering the house is reduced; the opening degree of the mixing adjusting cylinder 31 is increased along with the reduction of the temperature of the outdoor fresh cold air, so as to increase the indoor warm air mixed with the fresh cold air; the clearance between the diaphragm 11 and the main unit 2 decreases as the temperature of the fresh cool outdoor air decreases in order to increase the coverage area of the neutralized air.
During ventilation in winter, the opening degree of the air valve body 41 is reduced to ensure the minimum value of the required fresh air quantity, the opening degree of the mixing adjusting cylinder 31 is increased to be matched with the opening degree of the air valve body 41, the gap between the flow guide disc 11 and the host machine device 2 is reduced to be matched with the required air supply distance and the temperature of the neutralized air; when ventilation is performed in summer, the opening degree of the air valve body 41 is adjusted to be large, the air valve body is generally in a fully-opened state, the opening degree of the mixing adjusting cylinder 31 is reduced, the air valve body is generally completely closed, and the gap between the flow guide disc 11 and the host machine device 2 is increased; when ventilating in spring and autumn, the opening of the air valve body 41 and the opening of the mixing and adjusting cylinder 31 are in a half-open state.
According to the invention, the opening degree of the mixing adjusting cylinder 31 is changed, so that the heat exchange content of indoor warm air entering the fan and fresh air mixing is different, and the temperature of the mixed neutralized air is changed, namely the temperature of the fresh cold air and the indoor warm air after heat exchange is increased, and the fresh cold air and the indoor warm air are changed to be sent to a large-range space in the house after being changed by the efficient flow dividing structure of the flow guide plate 11. The temperature of the neutralizing air can be adjusted within a certain range, namely the fresh cold air ratio and the indoor warm air ratio are controlled by the air valve and the mixing adjusting cylinder 31, and the radiation distance of the neutralizing air can be adjusted within a certain range, namely the gap between the flow guide disc 11 and the host module is adjusted, so that the invention has the advantages of good mixing effect, energy conservation and effectiveness.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A chimney type mixed air inlet machine is characterized by comprising:
the rain-proof cap device comprises a cap;
the wind gathering barrel device comprises a wind gathering shell which is connected and arranged at the bottom of the rain-proof cap device;
the air valve device comprises an air valve shell, an air valve body is arranged in the air valve shell, and the air inlet amount is controlled by opening and closing the air valve body;
the air duct device comprises an air duct shell and is used for connecting the air collecting shell and an air duct shell;
the host device comprises a host shell, wherein a fan is arranged in the host shell, and the host shell and the fan shell are connected through a connecting plate;
the mixing device comprises a mixing adjusting cylinder sleeved outside the connecting plate, and the mixing adjusting cylinder moves up and down relative to the connecting plate and is used for controlling the air inlet amount;
and the flow guide device comprises a flow guide plate which is connected and arranged below the main machine shell and is used for guiding and diffusing wind indoors.
2. The chimney type hybrid air inlet machine according to claim 1, wherein the rain-proof cap device further comprises a bird-proof net enclosed between the cap and the wind-gathering shell, and external air enters from the bird-proof net.
3. The chimney type hybrid air inlet machine as claimed in claim 1, wherein the cross-sectional area of the top end of the air-entraining housing is larger than the cross-sectional area of the bottom end of the air-entraining housing.
4. The chimney type hybrid air inlet machine according to claim 1, wherein the air valve device further comprises an air valve actuator fixedly arranged outside the air valve housing, and the air valve actuator and the air valve body are in transmission connection.
5. The chimney type hybrid air inlet machine according to claim 1, wherein the cross-sectional area of the bottom end of the main housing is larger than that of the top end of the main housing, the fan includes a driving motor, the driving motor is fixedly connected with the inner wall of the main housing through a fixing frame, a rotating shaft is arranged at the bottom end of the driving motor, and blades are fixedly arranged outside the bottom end of the rotating shaft.
6. The chimney type hybrid air inlet machine as claimed in claim 1, wherein a connecting pipe is connected between the deflector and the main housing, and the top end of the connecting pipe is fixedly disposed through a B-pin after penetrating through the main housing.
7. The chimney type mixed air inlet machine as claimed in claim 1, wherein the top surface of the baffle plate is provided with a plurality of baffle slots uniformly distributed along the circumference, the longitudinal cross-sectional area of the middle part of the baffle slot is smaller than that of the edge part of the baffle slot, and the middle part of the baffle plate is integrally connected with a protrusion.
8. The chimney type hybrid air inlet machine according to claim 1, wherein the upper part of the air duct device is disposed outdoors, the lower part of the air duct device is disposed indoors, and the outside air is dispersed indoors after entering through the air inlet holes and passing through the air collecting device, the air duct device, the air valve device, the main machine device and the flow guide device.
9. The chimney type mixing air inlet machine according to claim 1, wherein pulley assemblies are correspondingly arranged on the side walls of the air valve shell, nylon ropes are guided on the outer sides of the pulley assemblies, one ends of the nylon ropes are fixedly connected with the mixing adjusting cylinder, the other ends of the nylon ropes are fixedly connected with steel wire ropes, and the steel wire ropes pull the mixing adjusting cylinder to move up and down through an electric push rod.
10. A ventilation mode using the chimney type hybrid air inlet fan as claimed in claim 1, wherein the ventilation mode is divided into a mode a, a mode B and a mode C according to temperature variation;
the mode A is used in winter, the opening degree of the air valve body is small, the opening degree of the mixing adjusting cylinder is large, and the gap between the flow guide disc and the main machine shell is small;
the mode B is used in summer, the opening degree of the air valve body is large, the opening degree of the mixing adjusting cylinder is small, and the gap between the flow guide disc and the main machine shell is large;
the C mode is used for spring and autumn, the aperture of blast gate body is half-open, the aperture of mixing adjustment section of thick bamboo is half-open.
CN202210852433.4A 2022-07-20 2022-07-20 Chimney type mixed air inlet machine and ventilation mode thereof Pending CN115104537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210852433.4A CN115104537A (en) 2022-07-20 2022-07-20 Chimney type mixed air inlet machine and ventilation mode thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210852433.4A CN115104537A (en) 2022-07-20 2022-07-20 Chimney type mixed air inlet machine and ventilation mode thereof

Publications (1)

Publication Number Publication Date
CN115104537A true CN115104537A (en) 2022-09-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210852433.4A Pending CN115104537A (en) 2022-07-20 2022-07-20 Chimney type mixed air inlet machine and ventilation mode thereof

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010002960U1 (en) * 2010-02-26 2011-08-01 Big Dutchman International Gmbh Supply chimney for livestock houses
CN204518780U (en) * 2015-03-19 2015-08-05 青岛易高空调有限公司 Funnel-shaped air inlet fan
CN209621667U (en) * 2019-03-04 2019-11-12 北京京鹏环宇畜牧科技股份有限公司 Feeding facility blower
CN110671770A (en) * 2019-10-30 2020-01-10 中国建筑西北设计研究院有限公司 Low-energy-consumption rural house indoor thermal environment regulation and control system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010002960U1 (en) * 2010-02-26 2011-08-01 Big Dutchman International Gmbh Supply chimney for livestock houses
EP2361499A2 (en) * 2010-02-26 2011-08-31 Big Dutchman International GmbH Chimney for livestock barns
CN204518780U (en) * 2015-03-19 2015-08-05 青岛易高空调有限公司 Funnel-shaped air inlet fan
CN209621667U (en) * 2019-03-04 2019-11-12 北京京鹏环宇畜牧科技股份有限公司 Feeding facility blower
CN110671770A (en) * 2019-10-30 2020-01-10 中国建筑西北设计研究院有限公司 Low-energy-consumption rural house indoor thermal environment regulation and control system

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