CN103960159B - A kind of hen house - Google Patents
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- CN103960159B CN103960159B CN201310039150.9A CN201310039150A CN103960159B CN 103960159 B CN103960159 B CN 103960159B CN 201310039150 A CN201310039150 A CN 201310039150A CN 103960159 B CN103960159 B CN 103960159B
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Abstract
A kind of hen house disclosed by the invention, including the first vent being opened on body of wall, being provided with wet curtain in this first vent, wet curtain upper end is provided with water supply installation, and the multiple exhaust blowers being arranged on body of wall, also include at least one second vent being opened on body of wall；The control system of this hen house is configured to: when the dry-bulb temperature in described hen house is less than the first marginal value, open described second vent and described exhaust blower；In described hen house, described dry-bulb temperature rises to described first marginal value, and when relative humidity is less than the second marginal value, closes described second vent, open described first vent.Compared with prior art, the present invention is by setting up the second vent on body of wall, use two kinds of different draft types, solve the problem only lowered the temperature under hot and humid weather condition and cause the rising of heat stress index by " wet curtain negative pressure ", make heat stress index control in the range of suitable chicken grows, thus improve the production efficiency of chicken.
Description
Technical field
The present invention relates to the broiler breeding field of animal husbandry, be specifically related to a kind of hen house.
Background technology
In modernization broiler breeding technology, most important to the environmental Kuznets Curves of hen house, environmental Kuznets Curves is subject to
The many factors impacts such as dry-bulb temperature, relative humidity, wind speed, illumination, air quality, but generally feelings
Under condition, the environmental Kuznets Curves of hen house it is critical only that dry-bulb temperature control, generally ventilating is to control chicken
One of basic means of house dry-bulb temperature.
Although the method for ventilation that Various Seasonal uses is had nothing in common with each other, but the major function of ventilating system includes
Ventilation and cooling, such as winter ventilation Main Function is ventilation, in time by the ammonia in hen house, suspension
The harmful gas such as dust and carbon monoxide is discharged, and summer ventilation Main Function is then cooling, by protecting
The ventilation of card certain wind speed causes air-cooled effect so that chicken reaches the sendible temperature of relative comfort, from
And ensure its normal growth.
Wherein, the more employing of summer ventilation " wet curtain-negative-pressure air fan " aeration cooling system, in conjunction with figure
1 operation principle that this aeration cooling system is described, this aeration cooling system be by wet curtain 11,
Water circulation system 12 and fan 13 form, and wherein, wet curtain 11 is arranged on and is opened in hen house one wall
In vent on body, water circulation system 12 is arranged at the upper end of wet curtain 11, and this system includes
Main-supply and be provided with the distributive pipe road adding wet hole, fan 13 is installed on wet curtain relative on body of wall
Through hole in.
The work process of above-mentioned " wet curtain-negative-pressure air fan " aeration cooling system is: open water cyclic system
The water pump of system 12, humidifies wet curtain 11 when current are via distributive pipe road；When opening fan 13,
In hen house formed negative pressure, hen house external high temperature air through immersion wet curtain 11, humidifying cooling,
Form cold wind；Cold wind pass through hen house, by room residual heat absorb, and indoor after heat exchange
The hottest air is discharged by fan 13 again, thus reaches cooling-down effect.It addition, " wet curtain-
Negative-pressure air fan " hen house can also play the effect of humidification by aeration cooling system.
But in the most hot and humid month, in addition to dry-bulb temperature, relative humidity is to chicken
The impact of growth also can not be ignored, use heat stress index to embody both for chicken in this field
The impact of growing environment, heat stress index=dry-bulb temperature+relative humidity.
It is, in general, that heat stress index is less than 150, environment of chicken house is no problem, and 155 is critical state,
The decline of searching for food of 160 chickens, drinking-water increases, and yield declines, and heat stress index reaches to send out when 165
The dead phenomenon of live chickens only heat, rises to environment of chicken house when 170 and deteriorates, and the quantity of the dead chicken of heat is continuously increased.
As can be seen here, dry-bulb temperature and relative humidity affect the effect that environment of chicken house controls simultaneously, and only
Use after " wet curtain-negative-pressure air fan " aeration-cooling mode, make dry-bulb temperature be minimized but meanwhile
Cause relative relative humidity the highest, ultimately result in heat stress index too high, and make environment of chicken house deteriorate and make
Become a large amount of chicken dead, reduce the production efficiency of chicken.
In view of this, it would be highly desirable to a kind of hen house being applicable to summer is provided, only adopt solving existing hen house
By " wet curtain-negative-pressure air fan " aeration-cooling mode, and cause the problem that heat stress index in hen house increases.
Summary of the invention
For drawbacks described above, the core purpose of the present invention is, it is provided that a kind of hen house, by same time control
Dry-bulb temperature in hen house processed and relative humidity, control the heat stress index in hen house suitable chicken
In the range of growth.
A kind of hen house that the present invention provides, including at least one being opened on body of wall the first vent,
Being provided with wet curtain in described first vent, described wet curtain upper end is provided with water supply installation, and arranges
Multiple exhaust blowers on described body of wall, at least one also including being opened on described body of wall second is led to
Air port；The control system of described hen house is configured to: the dry-bulb temperature in described hen house is critical less than first
During value, open described second vent and described exhaust blower, form the first draft type；Described hen house
Interior described dry-bulb temperature rises to described first marginal value, and when relative humidity is less than the second marginal value,
Close described second vent, open described first vent, form the second draft type.
Preferably, described body of wall is enclosed by the first body of wall, the second body of wall, the 3rd body of wall and the 4th body of wall
Form, wherein, described first body of wall and described 3rd body of wall respectively with described second body of wall and described
Four bodies of wall are oppositely arranged.
Preferably, described first body of wall offering entrance, multiple described exhaust blowers depend in the horizontal direction
Secondary equally spaced being arranged on described second body of wall, described first vent is specially symmetrical being opened in
On described 3rd body of wall and described 4th body of wall two, described third venting mouth is being opened in symmetrically
On described 3rd body of wall and described 4th body of wall two groups.
Preferably, often organize described third venting mouth be specially the most equidistantly be opened in
Corresponding body of wall on multiple vents.
Preferably, described first vent is located close at described first body of wall.
Preferably, described first marginal value is 27.8 DEG C, and described second marginal value is 70%.
Preferably, when using described first draft type, described control system is by regulating described air draft
The unlatching quantity of machine, makes the wind speed at chicken back in described second vent and hen house respectively reach first
Setting value and the second setting value；When using described second draft type, described control system is by regulation
The unlatching quantity of described exhaust blower, described chicken back in making described first vent and described hen house
Wind speed respectively reaches the first setting value and the second setting value.
Preferably, described first setting value is 4m/s, and described second setting value is 2.5m/s.
Preferably, using described second draft type, described control system opens described water supply installation,
Time delay certain time, it is in, to described wet curtain, the state of being impregnated with；Closing described water supply installation, time delay is certain
Time, it is in drying regime to described wet curtain.
Preferably, the service intermittent mode by water pump that opens and closes of described water supply installation, or
It is to be realized by switch valve.
Preferably, including temperature sensor, relative humidity sensor and pressure transducer, wherein,
Described temperature sensor is uniformly distributed in described hen house, and described relative humidity sensor is suspended in described
The top of hen house, described pressure transducer be arranged at described first vent, described second vent and
At described exhaust blower.
Relative to above-mentioned background technology, the hen house that the present invention provides, including being opened on body of wall at least
One the first vent, is provided with wet curtain in this first vent, wet curtain upper end is provided with water supply installation,
And the multiple exhaust blowers being arranged on body of wall, at least one also including being opened on body of wall second is led to
Air port；The control system of this hen house is configured to: the dry-bulb temperature in described hen house is less than the first marginal value
Time, open described second vent and described exhaust blower, form the first draft type；In described hen house
Described dry-bulb temperature rises to described first marginal value, and when relative humidity is less than the second marginal value, closes
Close described second vent, open described first vent, form the second draft type.
Compared with prior art, the present invention is by setting up the first vent on body of wall, and makes it control
Dry-bulb temperature and relative humidity are compared, according to reality by system respectively with the first marginal value and the second marginal value
Border result selects the first draft type or the second draft type, makes heat stress index control suitable chicken
Only in the range of growth, solve and only lowered the temperature by " wet curtain-negative pressure " under hot and humid weather condition
And cause the problem of the rising of heat stress index, thus improve environment of chicken house, improve the life of chicken
Produce efficiency.
Accompanying drawing explanation
Fig. 1 is the draft type schematic diagram of hen house in prior art；
Fig. 2 is the schematic diagram of the specific embodiment of hen house in the present invention.
In Fig. 2:
1 first body of wall, 11 entrances, 2 second bodies of wall, 3 the 3rd bodies of wall, 4 the 4th bodies of wall, 5 air drafts
Machine, 6 wet curtain, 7 second vents.
Detailed description of the invention
The core of the present invention is, it is provided that a kind of hen house, by controlling the dry-bulb temperature in hen house simultaneously
And relative humidity, so that heat stress index controls in the range of suitable chicken grows, thus improve
The production efficiency of chicken.
Without loss of generality, present embodiment is illustrated in conjunction with Figure of description.
Referring to Fig. 2, Fig. 2 is the schematic diagram of the specific embodiment of hen house in the present invention.
As in figure 2 it is shown, the hen house that this programme provides, by first body of wall the 1, second body of wall, the 3rd wall
Body 3 and the 4th body of wall 4 enclose and form, and wherein, the first body of wall 1 and the 3rd body of wall 3 are respectively at second
Body of wall 2 and the 4th body of wall 4 are oppositely arranged.The entrance 11 of hen house is offered on first body of wall 1；Along water
Square to, the most equally spaced on the second body of wall 2 offer 8 exhaust blower installing ports (in figure not
Illustrate), and in each exhaust blower installing port, exhaust blower 5 is installed；3rd body of wall 3 and the 4th body of wall 4
What upper one end near the first body of wall 1 was symmetrical offers two the first vents, each first vent
Wet curtain 6 is inside installed, and wet curtain 6 upper end is provided with the water supply installation for soaking wet curtain 6 (in figure
Not shown)；Also include two group second be opened on the 3rd body of wall 3 and the 4th body of wall 4 be respectively symmetrically
Vent 7, and in the horizontal direction, often organize the second vent and be specially 6 the most equidistantly offered.
Additionally, this programme also includes a set of detection device, and this detection device includes that dry-bulb temperature senses
Device, relative humidity sensor and pressure transducer.Wherein, dry-bulb temperature sensor is uniformly distributed in
1.2 meters of distance ground eminence in hen house；Relative humidity sensor is specially two, wherein, and a position
At the L away from the first body of wall 1, another is positioned at the L of the second body of wall 2, and L is the 3rd body of wall 3
Or 1/4 length of the 4th body of wall 4；Pressure transducer is arranged at the first vent 11, second and ventilates
At mouth 21 and third venting mouth 31；Wind speed then uses hand-held metering system.By above-mentioned three kinds of biographies
The real-time data transmission that sensor records in control system, control system data are carried out Treatment Analysis with
The marginal value contrast set.
In sum, the control strategy of the control system of the hen house in this programme is: when doing in hen house
When bulb temperature is less than the first marginal value 27.8 DEG C, open the second vent 7 and exhaust blower 5, form the
One draft type；When dry-bulb temperature rises to the first marginal value 27.8 DEG C, and relative humidity is less than second
During marginal value 70%, close the second vent 7, open the first vent, form the second draft type,
I.e. use " wet curtain-negative pressure " aeration-cooling mode.
Compared with prior art, the present invention, by setting up the first vent 7 on the body of wall of hen house, makes
Dry-bulb temperature in hen house and relative humidity are faced by the control system of hen house respectively with the first marginal value and second
Dividing value contrasts, and selects to use the first draft type or the second draft type, by heat according to actual result
Stress index controls, in the range of suitable chicken grows, only to solve under hot and humid weather condition
Cause the problem that heat stress index raises by " wet curtain-negative pressure " cooling method, thus improve hen house
Environment, improves the production efficiency of chicken.
It should be noted that the first vent that being used in this programme installs wet curtain 6 is opened in the 3rd
On body of wall 3 and the 4th body of wall 4, and the second vent 7 is also opened in the 3rd body of wall 3 and the 4th body of wall
On 4, it will be understood that on the basis of meeting ventilation function requirement, the first vent and second ventilates
Mouth 7 can also be opened on the first body of wall 1 or the second body of wall 2.Certainly, the first vent and
Two vents 7 can also be arranged on different bodies of wall, and the such as first vent is opened in the first body of wall
On 1, and vent 7 is opened on the 3rd body of wall 3 and the 4th body of wall 4；Or both reversely set
Putting, the i.e. first vent is opened on the 3rd body of wall 3 and the 4th body of wall 4, and the second vent 7 is opened
It is located on the first body of wall 1.It is appreciated that vent 7 can also be opened in hen house simultaneously all
On body of wall.
Additionally, exhaust blower, wet curtain and the quantity of the second vent in this programme and arrangement,
Depend on actual scale and the aeration-cooling effect of reality to be reached of hen house, therefore, in this programme
The quantity of involved exhaust blower, wet curtain and vent and arrangement, be formed without the guarantor to the present invention
Protect the restriction of scope.
As it was previously stated, include a set of detection device in this programme, the data that this detection device records are real
Time transmission in control system, data are processed by control system, and with the dry-bulb temperature set the
One marginal value and the contrast of relative humidity the second marginal value, select the suitably side of ventilation by comparing result
Formula, thus improve the automatization level of hen house controlling system, reduce the labor intensity of workman.
It is appreciated that in this programme and traditional approach can also be used to measure the dry-bulb temperature in hen house and phase
To humidity, i.e. by dry-bulb temperature and relative humidity in temp.-humidity measuring apparatus detection hen house, by data people
Result and the first marginal value and the comparison of the second marginal value, then root is measured in work input control system
Border comparison result uses satisfactory draft type factually.It is of course also possible to only rely on manual measurement,
Comparison, then the different vent of artificial unlatching completes the displacement of draft type.
Further, at present, in order to obtain best Growth Results in broiler breeding, chicken 14 age in days
The important considerations that later generally sendible temperature should be controlled as environment of chicken house rather than dry bulb
Temperature.Wherein, dry-bulb temperature is the temperature measured by dry bulb thermometer is freely exposed in atmosphere,
Avoid the interference of radiation and dampness simultaneously.Dry bulb temperature is generally considered the temperature of temperature, it
It it is real thermodynamic temperature.In other words, dry-bulb temperature is that a common thermometer is exposed on air-flow
Temperature measured by, it does not indicates that corresponding rh value.And dry-bulb temperature can not represent
The chicken sense of reality to environment changes in temperature, the i.e. sendible temperature of chicken, and sendible temperature is to weigh chicken
Only feel ambient temperature height leading indicator, it is the letter of dry-bulb temperature, relative humidity, wind speed
Number, sees the function table shown in table 1.
Table 1
| Dry-bulb temperature | Relative humidity | Wind speed | Sendible temperature |
| 80F(27℃) | 50% | 0 | 82F(28℃) |
| 80F(27℃) | 70% | 0 | 86F(30℃) |
| 80F(27℃) | 50% | 2m/s | 66F(19℃) |
| 80F(27℃) | 70% | 2m/s | 70F(21℃) |
As shown in Table 1, identical dry-bulb temperature with under identical wind speed, the highest sendible temperature of relative humidity
The highest, relative humidity increases by 20% sendible temperature will increase by 2 DEG C；At identical dry-bulb temperature with identical
Relative humidity under, owing to the highest then sendible temperature of the effect wind speed of air-cooled effect is the lowest, wind speed increase
During 2m/s, sendible temperature will reduce by 9 DEG C, it can be seen that, wind speed is to reducing the effect of sendible temperature more
For substantially.
Based on These characteristics, this programme is when using the first ventilation or the second draft type, by adjusting
The quantity that joint exhaust blower 5 is opened, makes the first vent, the second vent 7 and the wind speed at chicken back
Reach target set point, to obtain the sendible temperature of suitable chicken growth.Test data surface, summer
When reaching the sendible temperature of suitable chicken growth, required target wind speed value is respectively set as, and first
It is the first setting value 4m/s at vent or the second vent, the second setting value at chicken back being
For 2.5m/s.Certainly, above-mentioned wind speed is all completed by hand-held air speed measuring apparatus in detection device, can
To understand, meeting in hen house on the basis of requirements of installation space, this programme can also use wind
The wind speed of various location measured by speed sensor, by measurement result real-time Transmission to transmission system with
First setting value and the second setting value comparison, determine opening of exhaust blower 5 further according to actual comparison result
Open quantity.
Such as, the temperature range of the first marginal value less than 27.8 DEG C is again divided into two temperature ranges:
First humidity province and the second humidity province, when dry-bulb temperature is positioned at the first humidity province, control system needs
Open 5 exhaust blowers, so that the wind speed at the second vent 7 and chicken back respectively reaches the first setting
Value 4m/s and the second setting value 2.5m/s；When dry-bulb temperature is increased to the second humidity province, control system
Need to establish 3 exhaust blowers newly, set so that the wind speed at the first vent and chicken back respectively reaches first
Definite value 4m/s and the second setting value 2.5m/s.It is appreciated that to enable to control more accurately chicken in hen house
Sendible temperature only, it is also possible to the first humidity province and the second humidity province Further Division, then set
Open the respective numbers of exhaust blower.
It follows that as in figure 2 it is shown, hen house in this programme uses longitudinal ventilation mode, will 8
Exhaust blower 6 is installed on the second body of wall 2 relative with hen house entrance 11, and installs the first of wet curtain 6
What vent was symmetrical is opened on the 3rd body of wall 3 and the 4th body of wall 4 near porch, the second vent
7 are opened on the 3rd body of wall 3 and the 4th body of wall 4 for the most equally spaced of symmetry in the horizontal direction
12.Ensure that the flow direction entering hen house endogenous wind tends to directional trend by this longitudinal ventilation mode, i.e. gas
Flow to enter from hen house one end equably along hen house y direction and discharge from the other end.Longitudinal ventilation mode has
There are the advantages such as low cost, noise are low.Certainly, according to the particular geographic location at hen house place, if reached
If metastable ventilation effect, this programme can also use transversal ventilation mode.Additionally,
The vent offered in hen house and the particular number of the exhaust blower of installation, depend on the real area of hen house
And the quantity of chicken in hen house, therefore, it is right that different vents and the quantity of exhaust blower will not be constituted
The restriction of scope.
It is known that the cooling capacity of wet curtain 6 depends not only on choosing the characteristic of material, and depend on
In the evaporation capacity of wet curtain 6, and when wet curtain 6 keeps wetting state for a long time, it is impossible to reach evaporation capacity.
To this end, the control system in this programme is by controlling the opening and closing time of water supply installation, realize
Wet curtain 6 evaporation capacity maximizes.Concrete control mode is；Unlatching water supply installation, time delay certain time,
It is in the state of being impregnated with to wet curtain 6；Close water supply installation, time delay certain time, be in dry to wet curtain 6
Dry state, so circulation are until using the first draft type.
It should be noted that concrete delay length is different because the area of wet curtain, material are different.
Such as, the water supply installation in this programme includes main-supply and is provided with the distributive pipe road adding wet hole,
And the water pump connected with main-supply, in order to make wet curtain 6 play optimal evaporation efficiency, thus strengthen
The cooling-down effect of wet curtain, this water pump uses service intermittent mode.It is appreciated that in this programme and also may be used
With the method by arranging switch valve between main water supply pipe and distributive pipe road, realize water supply installation
Opening and closing function.
Certainly, the necessary corresponding certain wet curtain area of certain ventilation, the big investment of area is big, Yi Zao
Become waste；The too small meeting of area causes flowing resistance too big, and air quantity reduces, and affects cooling-down effect, seriously
Person also can cause blower fan overload and motor damage, therefore, the area of selected wet curtain 6 must and air draft
The power of machine 5 matches.
The foregoing is only the preferred embodiment of the present invention, be not intended that scope
Limit.Any any amendment, equivalent and improvement made within the spirit and principles in the present invention
Deng, within should be included in the claims of the present invention.
Claims (11)
1. it is applicable to the hen house in summer, including at least one being opened on body of wall the first vent,
Being provided with wet curtain in described first vent, described wet curtain upper end is provided with water supply installation, and is arranged at
Multiple exhaust blowers on described body of wall, it is characterised in that also include be opened on described body of wall at least one
Individual second vent；The control system of described hen house is configured to: the dry-bulb temperature in described hen house is less than the
During one marginal value, open described second vent and described exhaust blower, form the first draft type；Described
In hen house, described dry-bulb temperature rises to described first marginal value, and relative humidity is less than the second marginal value
Time, close described second vent, open described first vent, form the second draft type.
Hen house the most according to claim 1, it is characterised in that described body of wall by the first body of wall,
Two bodies of wall, the 3rd body of wall and the 4th body of wall enclose and form, wherein, and described first body of wall and described 3rd wall
Body is oppositely arranged with described second body of wall and described 4th body of wall respectively.
Hen house the most according to claim 2, it is characterised in that offer on described first body of wall into
Mouthful, multiple described exhaust blowers are the most equally spaced to be arranged on described second body of wall, described
First vent is specially and symmetrical is opened on described 3rd body of wall and described 4th body of wall two, described
Second vent is two groups be opened on described 3rd body of wall and described 4th body of wall symmetrically.
Hen house the most according to claim 3, it is characterised in that often organize described second vent concrete
For the multiple vents being the most equidistantly opened on corresponding body of wall.
Hen house the most according to claim 4, it is characterised in that described first vent is located close to
At described first body of wall.
Hen house the most according to claim 5, it is characterised in that described first marginal value is 27.8 DEG C,
Described second marginal value is 70%.
Hen house the most according to claim 6, it is characterised in that when using described first draft type,
Described control system, by regulating the unlatching quantity of described exhaust blower, makes described second vent and described chicken
In house, the wind speed at chicken back respectively reaches the first setting value and the second setting value；Described second is used to ventilate
During mode, described control system, by regulating the unlatching quantity of described exhaust blower, makes described first vent
The wind speed at described chicken back respectively reaches the first setting value and the second setting value with in described hen house.
Hen house the most according to claim 7, it is characterised in that described first setting value is 4m/s,
Described second setting value is 2.5m/s.
Hen house the most according to claim 8, it is characterised in that use described second draft type,
Described control system opens described water supply installation, time delay certain time, is in, to described wet curtain, the state of being impregnated with；
Close described water supply installation, time delay certain time, be in drying regime to described wet curtain.
Hen house the most according to claim 9, it is characterised in that the unlatching of described water supply installation and pass
Close the service intermittent mode by water pump, or switch valve realizes.
11. hen houses according to claim 10, it is characterised in that include temperature sensor, relatively
Humidity sensor and pressure transducer, wherein, described temperature sensor is uniformly distributed in described hen house,
Described relative humidity sensor is suspended in the top of described hen house, and described pressure transducer is arranged at described
At one vent, described second vent and described exhaust blower.
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| CN201310039150.9A CN103960159B (en) | 2013-01-31 | 2013-01-31 | A kind of hen house |
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| CN104430031A (en) * | 2014-12-15 | 2015-03-25 | 安阳工学院 | Water curtain cooling method for chicken house |
| CN104521799A (en) * | 2014-12-23 | 2015-04-22 | 安徽荣达禽业开发有限公司 | Automatic full-closed tier breeding pullet house ventilation method |
| CN104957053A (en) * | 2015-07-17 | 2015-10-07 | 陈建生 | Chick breeding box |
| CN109349160A (en) * | 2018-11-01 | 2019-02-19 | 佛山科学技术学院 | A kind of orchard ecology free-ranging henhouse |
| CN110268997A (en) * | 2019-08-10 | 2019-09-24 | 河南万华畜牧设备有限公司 | 4 layers of thermostatic type intelligence henhouse |
| CN113110652B (en) * | 2021-04-10 | 2022-03-11 | 南昌县气象局 | Automatic temperature and humidity monitoring and control device and method for artificial climate room |
| CN113575465B (en) * | 2021-08-27 | 2023-01-17 | 江苏深农智能科技有限公司 | Intelligent wet curtain cooling system and regulation and control method thereof |
| CN114706437A (en) * | 2022-04-02 | 2022-07-05 | 大牧人机械(胶州)有限公司 | Air volume control method based on pig position ventilation |
| CN115493219A (en) * | 2022-09-26 | 2022-12-20 | 珠海格力电器股份有限公司 | Water supply control method and cooling device |
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| US7317969B2 (en) * | 2002-09-30 | 2008-01-08 | Ctb Ip, Inc. | Method and system for managing and operating a plurality of farm houses |
| US9078400B2 (en) * | 2004-03-01 | 2015-07-14 | Montec Pty. Ltd | Method and apparatus for environmental control according to perceived temperature |
| CN201624058U (en) * | 2009-12-29 | 2010-11-10 | 河南大用实业有限公司 | Chicken house |
| CN102124959A (en) * | 2010-01-12 | 2011-07-20 | 江苏京海禽业集团有限公司 | Henhouse cooling device |
| CN201640180U (en) * | 2010-02-23 | 2010-11-24 | 山东省农业科学院畜牧兽医研究所 | Broiler fermentation bed barton |
| CN201837910U (en) * | 2010-06-18 | 2011-05-18 | 河南大用实业有限公司 | Automatic control system used for henhouse |
| CN201789841U (en) * | 2010-09-10 | 2011-04-13 | 浠水县四方饲料有限公司 | Sealed hen house with functions of temperature regulation, temperature control and ventilation |
| CN202232526U (en) * | 2011-09-21 | 2012-05-30 | 广东天农食品有限公司 | Negative-pressure hen house |
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