CN216254528U - Poultry and livestock breeding house environment control system - Google Patents
Poultry and livestock breeding house environment control system Download PDFInfo
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- CN216254528U CN216254528U CN202122021462.XU CN202122021462U CN216254528U CN 216254528 U CN216254528 U CN 216254528U CN 202122021462 U CN202122021462 U CN 202122021462U CN 216254528 U CN216254528 U CN 216254528U
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Abstract
The utility model relates to the field of breeding environment control, and particularly discloses a livestock breeding house environment control system which comprises a fresh air unit, a return air fan unit, an exhaust treatment unit, a heat exchange assembly, an air port assembly, an air supply pipe, a return air pipe, an exhaust pipe and control equipment; the fresh air unit and the air return unit are used for extracting air, filtering, killing viruses and bacteria, and sending air out after temperature and humidity adjustment for environment control of the livestock breeding house; the exhaust processing unit is used for extracting air in the exhaust pipe, sterilizing and deodorizing the air and then exhausting the air out of the livestock breeding house; the heat exchange assembly is used for realizing heat exchange between fresh air and exhaust air, recovering energy in the exhaust air for reuse, and precooling or preheating the fresh air. The utility model improves the operation energy efficiency of the system by the fresh air unit, the exhaust air processing unit and the air return unit which are simultaneously and simultaneously arranged, and realizes the air processing mode that the air return unit and the fresh air assembly can process fresh air together, thereby realizing that the system can flexibly change the operation mode according to different working conditions.
Description
Technical Field
The utility model relates to the field of breeding environment control, in particular to an environment control system for a livestock breeding house.
Background
With the development of modern breeding industry, centralized large-scale poultry and livestock breeding houses are more advanced and efficient, and in order to deal with the reduction of air environment quality caused by massive intensive breeding and the deterioration of breeding environment, the health and meat quality of poultry and livestock are affected, a fresh air system and a ventilation system are applied in large quantities.
Most of the existing animal breeding house environment control systems only have fresh air units or exhaust air treatment units but do not have return air units, and when temperature and humidity control is carried out on the livestock breeding house, the air treatment energy consumption of a fresh air system is large. The energy-saving method is to increase the air return unit, so that the energy consumption of the air return unit is low, and the operation energy efficiency of the environment control system is improved.
The working condition adaptability of the existing animal breeding house environment control system needs to be enhanced, and an air treatment mode that fresh air and return air are respectively treated by a fresh air unit and a return air unit and the return air unit can simultaneously treat the fresh air is not seen; the air treatment mode can flexibly change the operation mode according to the working condition change of the system operation, and the energy-saving operation of the environment control system is realized while the environment control requirement of the breeding house is met.
The existing animal breeding house environment control system generally adopts an exhaust fan with large air quantity, and the air quantity can not be accurately controlled according to the environment requirement of the breeding house, so that the energy consumption of the fan is large. When the air exhaust amount is reduced through frequency conversion adjustment, the pressure head of a fan is insufficient, the polluted air of the breeding house cannot be smoothly exhausted outdoors, the air quality of the environment of the breeding house is deteriorated, the health of animals is affected, and animal diseases are caused; moreover, only one exhaust fan is usually arranged on the exhaust pipe, so that the reliability of the environment control system is low.
The existing animal breeding house environment control system, such as a system adopting a wet curtain or a common central air conditioning system, does not realize the accurate control of air supply temperature and humidity. And accurate air supply temperature and humidity control can realize the local accurate air supply mode of little difference in temperature, directly sends near animal living area to wind to improve the air quality of animal living area.
When the existing animal breeding house environment control system adopts an air conditioning system, an energy recovery system which does not produce cross pollution of fresh air and exhaust air is rarely adopted, so that the energy of the exhaust air is wasted, and the energy is not saved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides an environment control system for a livestock breeding house.
The technical scheme adopted by the utility model is as follows: an environment control system for a livestock breeding house comprises a plurality of animal living areas, a fresh air unit, a return air fan unit, an exhaust air processing unit, a heat exchange assembly, an air port assembly, an air supply pipe, a return air pipe, an exhaust pipe and control equipment;
the fresh air unit and the air return unit are used for extracting air, filtering, killing viruses and bacteria, adjusting temperature and humidity and then sending out fresh air for controlling the environment of the livestock breeding house; the exhaust treatment unit is used for extracting air in the exhaust pipe, sterilizing and deodorizing the air and then exhausting the air out of the livestock breeding house; the heat exchange assembly comprises a fresh air heat exchanger, an exhaust air heat exchanger, a working medium circulating pump and a working medium circulating pipeline, the fresh air heat exchanger and the exhaust air heat exchanger are connected in a closed loop through the working medium circulating pipeline, and the working medium circulating pump is arranged on the working medium circulating pipeline; the air inlet assembly comprises a plurality of air supply outlets, a plurality of air return outlets and a plurality of air outlets, the air supply outlets are arranged at the upper part of the animal living area, the air return outlets are arranged at one side or more sides of the animal living area, and the air outlets are arranged below the animal living area; the control equipment comprises a controller, a valve assembly and a sensor assembly, wherein the controller is used for controlling the working states of the fresh air handling unit, the air return handling unit, the exhaust air handling unit and the valve assembly and receiving signals of the sensor assembly, and the sensor assembly is used for detecting the temperature, the humidity, the flow and the concentration of harmful gases of air through a sensor; the valve assembly comprises a first fresh air valve, a second fresh air valve and a return air valve; the inlet of the fresh air heat exchanger is communicated with the outside of the livestock breeding house, the outlet of the fresh air heat exchanger is connected with the inlet of the fresh air unit through a second fresh air valve, the outlet of the fresh air heat exchanger is communicated with the inlet of the air return unit through a first fresh air valve, the outlets of the fresh air unit and the air return unit are both connected with the air supply pipe, and the air supply ports are all connected with the air supply pipe; the plurality of air return ports are connected with the front end of the air return pipe, the tail end of the air return pipe is provided with a variable-frequency air return machine, and the variable-frequency air return machine is connected with an inlet of the air return machine group through the air return valve; the air outlets are connected with the inlet of the air exhaust processing unit through the air exhaust pipe.
Preferably, the fresh air handling unit comprises a second primary filter, a second intermediate filter, a second air sterilizing device, a fourth surface heat exchanger, a third surface heat exchanger and a second variable frequency blower which are connected in sequence; the air return unit comprises a first primary filter, a first intermediate filter, a first air sterilizing device, a first surface type heat exchanger, a second surface type heat exchanger and a first variable frequency blower which are sequentially connected; the exhaust treatment unit comprises a second variable-frequency exhaust fan, an exhaust deodorizing and sterilizing device, an exhaust heat exchanger, a first variable-frequency exhaust fan and a negative pressure ventilation device which are sequentially connected.
Preferably, the negative pressure ventilation device is one of a wind cap or a wind-proof skylight or a combination of the wind cap and the wind-proof skylight.
Preferably, the exhaust air heat exchanger and the fresh air heat exchanger are both one of surface heat exchangers or heat pipes or a combination thereof.
Preferably, the sensor assembly comprises a plurality of dry bulb temperature sensors, a plurality of humidity sensors, a plurality of harmful gas concentration sensors and a plurality of flow sensors; the inlet of the fresh air heat exchanger, the two ends of the first surface type heat exchanger, the two ends of the second surface type heat exchanger, the two ends of the third surface type heat exchanger, the two ends of the fourth surface type heat exchanger and the animal living area are respectively provided with a dry-bulb temperature sensor and a humidity sensor; the outlet of the first frequency conversion air feeder, the outlet of the second frequency conversion air feeder, the inlet of the second frequency conversion exhaust fan and the return air pipe are equally divided into flow sensors, and the animal living area is also provided with a plurality of harmful gas concentration sensors.
The utility model has the beneficial effects that:
(1) through the fresh air handling unit, the exhaust processing unit and the return air handling unit which are simultaneously coexisted, the enthalpy difference or the temperature difference of the return air processing is small, the consumed cold quantity or the heat quantity is small, the evaporation temperature required by refrigeration is high, namely, the energy efficiency ratio of a refrigeration system is high, the processing energy consumption is low, and therefore the operation energy efficiency of the system is improved.
(2) The fresh air and the return air of the utility model respectively adopt the fresh air unit and the return air unit to carry out air treatment, and the return air unit can also simultaneously carry out air treatment of the fresh air, thereby realizing that the system can flexibly change the operation mode according to different working conditions, meeting the environmental control requirement of the breeding house and achieving the purpose of energy saving.
Drawings
FIG. 1 is a schematic view of an environmental control system of the present invention.
In the figure: 1. a first fresh air valve; 2. a first primary filter; 3. a first medium efficiency filter; 4. a first air sterilizing device; 5. a first surface type heat exchanger; 6. a second surface type heat exchanger; 7. a first variable frequency blower; 8. a fan return unit; 9. a controller; 10. an air supply pipe; 11. a return air duct; 12. an air supply outlet; 13. an air return opening; 14. a negative pressure ventilation device; 15. a first variable frequency exhaust fan; 16. an exhaust heat exchanger; 17. an air exhaust deodorizing and sterilizing device; 18. a second variable frequency exhaust fan; 19. an air outlet; 20. an exhaust duct; 21. a working medium circulating pump; 22. a working medium circulation pipeline; 23. a fresh air handling unit; 24. a second variable frequency blower; 25. a third surface heat exchanger; 26. a fourth surface-mount heat exchanger; 27. a second air sterilizing device; 28. a second medium efficiency filter; 29. a second primary filter; 30. a second fresh air valve; 31. frequency conversion air return machine; 32. a return air valve; 33. a fresh air heat exchanger; 34. a dry bulb temperature sensor; 35. a humidity sensor; 36. a harmful gas concentration sensor; 37. a flow sensor.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Referring to fig. 1, the utility model is a livestock breeding house environment control system, an animal living area is an area in a dotted line frame in the livestock breeding house in the figure, and the livestock breeding house environment control system comprises a plurality of animal living areas, a fresh air unit 23, a return air unit 8, an exhaust air processing unit, a heat exchange assembly, an air port assembly, an air supply pipe 10, a return air pipe 11, an exhaust pipe 20 and control equipment;
the fresh air unit 23 and the air return unit 8 are used for extracting air, filtering, killing viruses and bacteria, adjusting temperature and humidity and then sending out fresh air for environment control of the livestock and poultry breeding house; the exhaust processing unit is used for extracting air in the exhaust pipe 20, sterilizing and deodorizing the air and then exhausting the air out of the livestock breeding house; the heat exchange assembly comprises a fresh air heat exchanger 33, an exhaust air heat exchanger 16, a working medium circulating pump 21 and a working medium circulating pipeline 22, the fresh air heat exchanger 33 and the exhaust air heat exchanger 16 are connected in a closed loop mode through the working medium circulating pipeline 22, and the working medium circulating pump 21 is arranged on the working medium circulating pipeline 22; the air inlet component comprises a plurality of air supply outlets 12, a plurality of air return outlets 13 and a plurality of air outlet 19, the air supply outlets 12 are arranged at the upper part of the animal living area, the air return outlets 13 are arranged at one side or more sides of the animal living area and are arranged at any positions of the upper part, the middle part and the lower part of the animal living area, the preferable air return outlets 13 are arranged at the middle lower part of the animal living area, and the air outlet 19 is arranged below the animal living area; the control equipment comprises a controller 9, a valve assembly and a sensor assembly, wherein the controller 9 is used for controlling the working states of the fresh air handling unit 23, the air return unit 8, the exhaust air handling unit and the valve assembly and receiving signals of the sensor assembly, and the sensor assembly is used for detecting the temperature, the humidity, the flow and the concentration of harmful gases of air through a sensor; the valve assembly comprises a first fresh air valve 1, a second fresh air valve 30 and a return air valve 32; the inlet of the fresh air heat exchanger 33 is communicated with the outside of the livestock breeding house, the outlet of the fresh air heat exchanger 33 is connected with the inlet of the fresh air unit 23 through the second fresh air valve 30, the outlet of the fresh air heat exchanger 33 is communicated with the inlet of the air return unit 8 through the first fresh air valve 1, the outlets of the fresh air unit 23 and the air return unit 8 are both connected with the blast pipe 10, and the plurality of blast outlets 12 are both connected with the blast pipe 10; the plurality of air return ports 13 are connected with the front end of the air return pipe 11, the tail end of the air return pipe 11 is provided with a variable frequency air return machine 31, and the variable frequency air return machine 31 is connected with an inlet of the air return machine group 8 through an air return valve 32; the exhaust outlets 19 are connected with the inlet of the exhaust treatment unit through exhaust pipes 20.
Preferably, the fresh air handling unit 23 includes a second primary filter 29, a second intermediate filter 28, a second air sterilizing device 27, a fourth surface heat exchanger 26, a third surface heat exchanger 25, and a second variable frequency blower 24, which are connected in sequence; the air return unit 8 comprises a first primary filter 2, a first intermediate filter 3, a first air sterilizing device 4, a first surface type heat exchanger 5, a second surface type heat exchanger 6 and a first variable frequency blower 7 which are connected in sequence; the exhaust treatment unit comprises a second variable-frequency exhaust fan 18, an exhaust deodorizing and sterilizing device 17, an exhaust heat exchanger 16, a first variable-frequency exhaust fan 15 and a negative pressure ventilation device 14 which are connected in sequence.
Preferably, the negative pressure ventilation device 14 is one of a wind cap or a wind-proof skylight, or a combination thereof.
Preferably, the exhaust air heat exchanger 16 and the fresh air heat exchanger 33 are both one of surface heat exchangers or heat pipes or a combination thereof.
Preferably, the sensor assembly includes a number of dry bulb temperature sensors 34, a number of humidity sensors 35, a number of harmful gas concentration sensors 36, a number of flow sensors 37; the inlet of the fresh air heat exchanger 33, the two ends of the first surface type heat exchanger 5, the two ends of the second surface type heat exchanger 6, the two ends of the third surface type heat exchanger 25, the two ends of the fourth surface type heat exchanger 26 and the animal living area are respectively provided with a dry-bulb temperature sensor 34 and a humidity sensor 35; the outlet of the first frequency conversion blower 7, the outlet of the second frequency conversion blower 24, the inlet of the second frequency conversion exhaust fan 18 and the return air pipe 11 are respectively provided with a flow sensor 37, and the animal living area is also provided with a plurality of harmful gas concentration sensors 36.
A control method of an environment control system of a livestock breeding house comprises the following steps:
s1, controlling the concentration of harmful gas, measuring the concentration of the harmful gas according to a sensor assembly arranged in an animal living area, wherein the measured value is Ci, a harmful gas concentration threshold value is set as Ciset, and a harmful gas concentration control difference value is set as delta Ci; when Ciset + delta Ci is larger than or equal to Ciset, increasing the ventilation volume of the fresh air unit 23, increasing the fresh air volume and reducing the concentration of harmful gases in the animal living area; when Ciset-delta Ci is less than or equal to Ciset-delta Ci, the ventilation volume of the fresh air unit 23 is reduced, and the fresh air volume is reduced;
s2, controlling air humidity, setting a humidity measurement value of air measured by a sensor assembly of an animal living area as RHn, setting a humidity threshold value as RHSet, and setting a humidity control difference value as delta RH; when RHn is more than or equal to RHSet + delta RH, the refrigerating capacity of the fresh air unit 23 is increased, so that the dehumidifying capacity is increased, and the humidity of the animal living area is reduced; when RHn is less than or equal to RHSet-delta RH, reducing the refrigerating capacity of the fresh air unit 23, reducing the dehumidification capacity and increasing the humidity of the animal living area;
s3, further controlling the humidity, and increasing the air supply quantity of the fresh air handling unit 23 when the refrigerating capacity of the refrigerating system of the fresh air handling unit 23 reaches the upper limit and RHn is still more than or equal to RHSet + delta RH, so that the dehumidification efficiency is increased, and the humidity RHn of the animal living area is reduced; when the refrigerating capacity of the refrigerating system reaches the lower limit and RHn is still less than or equal to RHSet-delta RH, the refrigerating equipment used for refrigerating by the fresh air unit 23 is stopped;
s4, controlling the ambient temperature, and measuring the temperature Tn of the air through a sensor assembly of the animal living area; setting the temperature threshold value as Tnset, and setting the temperature control difference value as delta T; when Tn is more than or equal to Tnset + delta T, the refrigerating efficiency of the return fan unit 8 is increased, so that the indoor refrigerating capacity is increased, and the temperature of the animal living area is reduced; when Tn is less than or equal to Tnset-delta T, the refrigerating efficiency of the return fan unit 8 is reduced, so that the indoor refrigerating capacity is reduced, and the temperature of the animal living area is increased; thus, the temperature Tn of the living area of the animal is changed within a range meeting the requirement;
s5, further controlling the temperature, and increasing the refrigerating capacity of the fresh air unit 23 when the refrigerating capacity of the return air unit 8 reaches the upper limit of the power of the equipment and Tn is still greater than or equal to Tnset + delta T, so that the refrigerating capacity of the whole system is increased, and the temperature of the animal living area is reduced; when the frequency and the refrigerating capacity of the compressor of the refrigerating system of the air returning unit 8 reach lower limit values and Tnset-delta T is still larger than or equal to Tn, the compressor of the refrigerating system of the air returning unit 8 is closed, so that the refrigerating capacity of the whole system is reduced, and the temperature of an animal living area is increased; thus, the temperature Tn of the living area of the animal is changed within a range satisfying the requirement.
Preferably, the method further comprises the following steps:
s6, controlling the air exhaust amount, measuring indoor and outdoor differential pressure delta P of the breeding house by a sensor assembly, setting an indoor and outdoor differential pressure threshold delta Pset, and setting an indoor and outdoor differential pressure control difference value as 5 Pa; when the delta P is larger than or equal to delta Pset + 5, reducing the air exhaust volume of the air exhaust processing unit, so that the indoor and outdoor pressure difference delta P is reduced; and when the delta P is less than or equal to the delta Pset-5, increasing the air exhaust volume of the air exhaust processing unit so as to increase the indoor and outdoor pressure difference delta P.
Preferably, the method further comprises the following steps:
s7, further controlling the exhaust volume, and when the working power of the first variable-frequency exhaust fan 15 and the second variable-frequency exhaust fan 18 reaches the lower limit and the delta P is still more than or equal to delta Pset + 5, closing one of the first variable-frequency exhaust fan 15 or the second variable-frequency exhaust fan 18; when the delta P is less than or equal to the delta Pset-5, the working power of the running variable-frequency exhaust fan is increased; when the working efficiency of the running variable-frequency exhaust fans reaches the upper limit and delta P is still less than or equal to delta Pset-5, the first variable-frequency exhaust fan 15 and the second variable-frequency exhaust fan 18 are started.
Wherein, the inside third surface heat exchanger 25 and the fourth surface heat exchanger 26 of being equipped with of fresh air unit 23 for carry out the heat and humidity to the new trend and handle. The first surface type heat exchanger 5 and the second surface type heat exchanger 6 are arranged in the air return unit 8 and used for performing heat and humidity treatment on return air or fresh air or mixed air of the fresh air and the return air.
The first primary filter 2, the first intermediate filter 3, the first air sterilizing device 4, the second intermediate filter 28, the second primary filter 29 and the second air sterilizing device 27 are all used for filtering air and sterilizing viruses and bacteria so as to purify return air and fresh air.
The negative pressure ventilation device 14 (wind cap or wind-proof skylight, etc.) makes the outlet of the exhaust pipe 20 form the natural ventilation power effect of negative pressure, thereby realizing the purpose of energy saving.
The first variable-frequency exhaust fan 15 is used for helping the second variable-frequency exhaust fan 18 to overcome the flow resistance of the exhaust air treatment unit, the actual flow of the exhaust air treatment unit can be detected through the flow sensor 37 in front of the second variable-frequency exhaust fan 18, and when the negative pressure generated by the negative pressure ventilation device 14 and the pressure head generated by the second variable-frequency exhaust fan 18 are enough to overcome the flow resistance of the exhaust air treatment unit, the controller 9 sends an instruction to close the first variable-frequency exhaust fan 15, so that the energy conservation is further realized.
The exhaust heat exchanger 16 (surface heat exchanger or heat pipe, etc.), the working medium circulating pump 21, the working medium circulating pipeline 22 and the fresh air heat exchanger 33 (surface heat exchanger or heat pipe, etc.) are combined together to form a heat exchange assembly for realizing the heat exchange between fresh air and exhaust air, recovering the energy in the exhaust air for reuse, and precooling or preheating the fresh air, thereby effectively reducing the energy consumption of fresh air treatment and realizing the energy-saving operation of fresh air treatment.
Preferably, the controller 9 further comprises a network communication interface for allowing the controller 9 to connect to a communication network for remote data transmission and remote control.
As a specific embodiment of the utility model, taking a live pig breeding house as an example,
s1, controlling the concentration of harmful gases, selecting one of the harmful gases such as carbon dioxide, ammonia gas and hydrogen sulfide as a concentration control target, taking carbon dioxide as an example in the embodiment, measuring the concentration of the harmful gases according to a sensor assembly arranged in an animal living area, wherein the measured value is Ci, setting a harmful gas concentration threshold value to Ciset (the Ciset is 900 mg/cubic meter in the embodiment and is set according to actual requirements), and setting a harmful gas concentration control difference value to be delta Ci (the Ciset is 50 mg/cubic meter in the embodiment and is set according to actual requirements); when Ciset + delta Ci is larger than or equal to Ciset, increasing the ventilation volume of the fresh air unit 23, increasing the fresh air volume and reducing the concentration of harmful gases in the animal living area; when Ciset-delta Ci is less than or equal to Ciset-delta Ci, the ventilation volume of the fresh air unit 23 is reduced, and the fresh air volume is reduced; at the moment, the concentration of harmful gas in the living area of the animals is reduced and increased; therefore, the concentration of carbon dioxide arranged in an animal living area is controlled within a required range, and required control ventilation is realized;
s2, controlling air humidity, setting a humidity measurement value RHn (relative humidity or moisture content) of air measured by a sensor assembly in an animal living area, setting a humidity threshold RHset (relative humidity 70% in this embodiment, set according to actual requirements), and setting a humidity control difference value to Δ RH (relative humidity 10% in this embodiment, set according to actual requirements); when RHn is more than or equal to RHSet + delta RH, the refrigerating capacity of the fresh air unit 23 is increased, so that the dehumidifying capacity is increased, and the humidity of the animal living area is reduced; when RHn is less than or equal to RHSet-delta RH, reducing the refrigerating capacity of the fresh air unit 23, reducing the dehumidification capacity and increasing the humidity of the animal living area; so that the humidity RHn of the animal living area is changed within the range meeting the requirements;
s3, further controlling the humidity, and increasing the air supply quantity of the fresh air handling unit 23 when the refrigerating capacity of the refrigerating system of the fresh air handling unit 23 reaches the upper limit and RHn is still more than or equal to RHSet + delta RH, so that the dehumidification efficiency is increased, and the humidity RHn of the animal living area is reduced; when the refrigerating capacity of the refrigerating system reaches the lower limit and RHn is still less than or equal to RHSet-delta RH, the refrigerating equipment used for refrigerating by the fresh air unit 23 is stopped, so that the humidity RHn of the animal living area is increased; thereby, the humidity RHn of the animal living area is changed within a range satisfying the requirements;
s4, controlling the ambient temperature, and measuring the temperature Tn of the air through a sensor assembly of the animal living area; setting the temperature threshold as Tnset (the relative temperature is 27 ℃ in the embodiment and is set according to the actual requirement), and setting the temperature control difference as delta T (the relative temperature is 1 ℃ in the embodiment and is set according to the actual requirement); when Tn is more than or equal to Tnset + delta T, the refrigerating efficiency of the return fan unit 8 is increased, so that the indoor refrigerating capacity is increased, and the temperature of the animal living area is reduced; when Tn is less than or equal to Tnset-delta T, the refrigerating efficiency of the return fan unit 8 is reduced, so that the indoor refrigerating capacity is reduced, and the temperature of the animal living area is increased; thus, the temperature Tn of the living area of the animal is changed within a range meeting the requirement;
s5, further controlling the temperature, and increasing the refrigerating capacity of the fresh air unit 23 when the refrigerating capacity of the return air unit 8 reaches the upper limit of the power of the equipment and Tn is still greater than or equal to Tnset + delta T, so that the refrigerating capacity of the whole system is increased, and the temperature of the animal living area is reduced; when the frequency and the refrigerating capacity of the compressor of the refrigerating system of the air returning unit 8 reach lower limit values and Tnset-delta T is still larger than or equal to Tn, the compressor of the refrigerating system of the air returning unit 8 is closed, so that the refrigerating capacity of the whole system is reduced, and the temperature of an animal living area is increased; thus, the temperature Tn of the living area of the animal is changed within a range meeting the requirement;
s6, controlling the air exhaust amount, measuring indoor and outdoor pressure difference delta P of the breeding house by a sensor assembly, setting an indoor and outdoor pressure difference threshold delta Pset (10 Pa in the embodiment, set according to actual requirements), and setting an indoor and outdoor pressure difference control difference value to be 5Pa (set according to actual requirements); when the delta P is larger than or equal to the delta Pset + 5, the exhaust volume of the exhaust treatment unit is reduced (in the practical engineering, one of the first variable-frequency exhaust fan 15 and the second variable-frequency exhaust fan 18 can be eliminated according to the practical situation, namely only one variable-frequency exhaust fan with larger full pressure needs to be arranged), so that the indoor and outdoor pressure difference delta P is reduced; when the delta P is less than or equal to delta Pset-5, the air exhaust volume of the air exhaust processing unit is increased, so that the indoor and outdoor pressure difference delta P is increased; thus, the pressure difference between the indoor and the outdoor is about 10Pa, and the indoor pressure is ensured to be higher than the outdoor pressure;
s7, further controlling the exhaust volume, and when the working power of the first variable-frequency exhaust fan 15 and the second variable-frequency exhaust fan 18 reaches the lower limit and the delta P is still larger than or equal to delta Pset + 5, closing one of the first variable-frequency exhaust fan 15 or the second variable-frequency exhaust fan 18 to reduce the indoor and outdoor pressure difference delta P; when the delta P is less than or equal to the delta Pset-5, the working power of the running variable-frequency exhaust fan is increased; when the working efficiency of the running variable-frequency exhaust fans reaches the upper limit and still has delta P less than or equal to delta Pset-5, the first variable-frequency exhaust fan 15 and the second variable-frequency exhaust fan 18 are both started, and the exhaust system runs according to the step S6; therefore, through the combined operation and regulation of the two air exhausts, the pressure difference between the indoor and the outdoor is about 10Pa, and the indoor pressure is ensured to be higher than the outdoor pressure.
The following is described in detail according to different working conditions by combining the above system structure scheme and control method:
(1) when only the fresh air handling unit 23 and the exhaust air handling unit need to be started, the air handling process is as follows:
A. the fresh air operation flow is as follows: outdoor air → fresh air heat exchanger 33 → second fresh air valve 30 → second primary filter 29 → second intermediate filter 28 → second air sterilizing device 27 → fourth surface heat exchanger 26 → third surface heat exchanger 25 → second variable frequency blower 24 → blast pipe 10 → blast port 12 → animal living space;
B. the air exhaust operation flow is as follows: animal living area → air outlet 19 → air exhaust pipe 20 → second variable-frequency air exhauster 18 → air exhaust deodorizing and sterilizing device 17 → air exhaust heat exchanger 16 → first variable-frequency air exhauster 15 → negative pressure ventilating device 14 → outdoors;
C. and the air return unit 8 is closed.
The control method comprises the following steps:
environmental control parameters of the animal living area are detected by a dry bulb temperature sensor 34, a humidity sensor 35 and a harmful gas concentration sensor 36 which are arranged in the animal living area, and the data of the sensors are transmitted to the controller 9. The controller 9 determines that the indoor environment control requirement can be satisfied only by opening the fresh air handling unit 23 and the exhaust air handling unit according to a preset control parameter target value and a control algorithm program, and sends a control instruction to control the refrigerating capacity (or heating capacity) of the fourth surface heat exchanger 26 or the third surface heat exchanger 25 in the fresh air handling unit 23 and the rotating speed of the second variable frequency blower 24. Meanwhile, the controller 9 sends out an instruction according to a matching algorithm program between the air discharge capacity and the air supply capacity, and controls the rotating speed of the second variable-frequency exhaust fan 18 and the first variable-frequency exhaust fan 15, so that the air discharge capacity is accurately controlled.
Through the control mode, the air quantity is prevented from being too large or too small while the indoor air quality is maintained, and the ventilation is controlled according to the requirement, so that the energy-saving operation of the environment control system is realized. The first variable-frequency exhaust fan 15 is used for helping the second variable-frequency exhaust fan 18 to overcome the flow resistance of the exhaust air treatment unit, the actual flow of the exhaust air treatment unit can be detected through the flow sensor 37 in front of the second variable-frequency exhaust fan 18, and when the negative pressure generated by the negative pressure ventilation device 14 and the pressure head generated by the second variable-frequency exhaust fan 18 are enough to overcome the flow resistance of the exhaust air treatment unit, the controller 9 sends an instruction to close the first variable-frequency exhaust fan 15, so that energy is further saved.
(2) And only the fan unit 8 and the exhaust processing unit are started back to control the ventilation mode.
At this time, the air treatment process is as follows:
A. the air supply and return flow is as follows: outdoor air → fresh air heat exchanger 33 → first fresh air valve 1 → first primary filter 2 → first intermediate filter 3 → first air sterilizing device 4 → first surface heat exchanger 5 → second surface heat exchanger 6 → first variable frequency blower 7 → blast pipe 10 → blast port 12 → animal living area; indoor return air → return air port 13 → return air duct 11 → variable frequency return air blower 31 → return air valve 32 → first primary filter 2 → first intermediate filter 3 → first air sterilizing device 4 → first surface type heat exchanger 5 → second surface type heat exchanger 6 → first variable frequency blower 7 → blast pipe 10 → blast port 12 → animal living space.
B. The air exhaust process comprises the following steps: indoor polluted air → the exhaust outlet 19 → the exhaust duct 20 → the second variable-frequency exhaust fan 18 → the exhaust air deodorizing and sterilizing device 17 → the exhaust air heat exchanger 16 → the first variable-frequency exhaust fan 15 → the negative pressure ventilating device 14 → outdoors.
At this time, the fresh air unit 23 is turned off.
The control method comprises the following steps:
the dry bulb temperature sensor 34, the humidity sensor 35 and the harmful gas concentration sensor 36 which are arranged in the animal living area detect the environmental control parameters of the animal living area. These sensor data are transmitted to the controller 9. The controller 9 judges that the requirement of indoor environment control can be met only by opening the return fan unit 8 and the exhaust air handling unit according to a preset control parameter target value and a control algorithm program, and sends a control instruction to control the refrigerating capacity (or heating capacity) of the first surface type heat exchanger 5 or the second surface type heat exchanger 6 in the return fan unit 8 and the rotating speeds of the first variable frequency blower 7 and the variable frequency return fan 31. Meanwhile, the controller 9 sends out an instruction according to a matching algorithm program between the air discharge capacity and the air supply capacity, and controls the rotating speed of the second variable-frequency exhaust fan 18 and the first variable-frequency exhaust fan 15, so that the air discharge capacity is accurately controlled. Through the control mode, the air quality in a room is maintained, meanwhile, the phenomenon that the ventilation quantity is too large or too small is prevented, the ventilation is controlled according to the requirement, and therefore the energy-saving operation of the environment control system is achieved. The actual flow of the exhaust air processing unit can be detected by the flow sensor 37 in front of the second variable-frequency exhaust fan 18, and when the negative pressure generated by the negative pressure ventilation device 14 and the pressure head generated by the second variable-frequency exhaust fan 18 are enough to overcome the flow resistance of the exhaust air processing unit, the controller 9 sends an instruction to close the first variable-frequency exhaust fan 15, thereby further saving energy.
(3) Demand control ventilation mode for simultaneously starting fresh air handling unit 23, air return unit 8 and exhaust air handling unit
At this time, the air treatment process is as follows:
A. the air supply system comprises the following processes: outdoor air → fresh air heat exchanger 33 → second fresh air valve 30 → second primary filter 29 → second intermediate filter 28 → second air sterilizing device 27 → fourth surface heat exchanger 26 → third surface heat exchanger 25 → second variable frequency blower 24 → blast pipe 10 → blast port 12 → animal living space;
indoor return air → return air port 13 → return air duct 11 → variable frequency return air blower 31 → return air valve 32 → first primary filter 2 → first intermediate filter 3 → first air sterilizing device 4 → first surface type heat exchanger 5 → second surface type heat exchanger 6 → first variable frequency blower 7 → blast pipe 10 → blast port 12 → animal living space.
B. The air exhaust process comprises the following steps: indoor polluted air → the exhaust outlet 19 → the exhaust duct 20 → the second variable-frequency exhaust fan 18 → the exhaust air deodorizing and sterilizing device 17 → the exhaust air heat exchanger 16 → the first variable-frequency exhaust fan 15 → the negative pressure ventilating device 14 → outdoors.
At this time, the first fresh air valve 1 is closed.
The control method comprises the following steps:
the dry bulb temperature sensor 34, the humidity sensor 35 and the harmful gas concentration sensor 36 which are arranged in the animal living area detect the environmental control parameters of the animal living area. These sensor data are transmitted to the controller 9. The controller 9 judges that the fresh air handling unit 23, the return air handling unit 8 and the exhaust air handling unit can meet the requirement of indoor environment control only by starting the fresh air handling unit according to a preset control parameter target value and a control algorithm program, and respectively sends out control instructions to control the refrigerating capacity (or heating capacity) of the fourth surface heat exchanger 26 or the third surface heat exchanger 25 in the fresh air handling unit 23 and the rotating speed of the second variable frequency blower 24; the cooling capacity (or heating capacity) of the first surface type heat exchanger 5 or the second surface type heat exchanger 6 inside the return fan unit 8 and the rotating speed of the first variable frequency blower 7 are controlled. Meanwhile, the controller 9 sends out an instruction according to a matching algorithm program among the fresh air volume, the return air volume and the exhaust air volume, and controls the rotating speeds of the second variable-frequency blower 24, the first variable-frequency blower 7, the variable-frequency return fan 31, the second variable-frequency exhaust fan 18 and the first variable-frequency exhaust fan 15, so that the fresh air volume, the return air volume and the exhaust air volume are accurately controlled. Through the control mode, the air quality in a room is maintained, meanwhile, the phenomenon that the ventilation quantity is too large or too small is prevented, the ventilation is controlled according to the requirement, and therefore the energy-saving operation of the environment control system is achieved. The actual flow of the exhaust air processing unit can be detected by the flow sensor 37 in front of the second variable-frequency exhaust fan 18, and when the negative pressure generated by the negative pressure ventilation device 14 and the pressure head generated by the second variable-frequency exhaust fan 18 are enough to overcome the flow resistance of the exhaust air processing unit, the controller 9 sends an instruction to close the first variable-frequency exhaust fan 15, thereby further saving energy.
(4) Fresh air operation mode without refrigeration or heating
Under some working conditions, the outdoor meteorological conditions meet the requirement of direct entering of fresh air, the refrigerating or heating system is closed, the fresh air is directly sent into the room without heat and humidity treatment, and the exhaust treatment unit is opened at the same time. At this time, according to the control requirement of the indoor environment, or only starting the fan and the air sterilizing device in the fresh air handling unit 23; or only starting the fan and the air sterilizing device in the fan unit 8; or the fans and the air sterilizing devices in the fresh air unit 23 and the air return unit 8 are simultaneously opened.
The air treatment process comprises the following steps:
A. when only starting the fan and the air sterilizing device inside the fresh air handling unit 23:
the air supply system comprises the following processes: outdoor air → the second fresh air valve 30 → the second primary filter 29 → the second intermediate filter 28 → the second air sterilizing device 27 → the second variable frequency blower 24 → the blast pipe 10 → the blast port 12 → the animal living area;
the air exhaust process comprises the following steps: indoor polluted air → exhaust outlet 19 → exhaust pipe 20 → second variable-frequency exhaust fan 18 → exhaust air deodorizing and sterilizing device 17 → first variable-frequency exhaust fan 15 → negative pressure ventilation device 14 → outdoors;
at this time, the first fresh air valve 1 is closed, the air return fan group 8 is closed, and the air return fan group 8 is closed.
B. When only the fan and the air sterilizing device inside the fan unit 8 are turned on:
the air supply system comprises the following processes: outdoor air → first fresh air valve 1 → first primary filter 2 → first intermediate filter 3 → first air sterilizing device 4 → first variable frequency blower 7 → blast pipe 10 → blast outlet 12 → animal living area;
the air exhaust process comprises the following steps: indoor polluted air → the exhaust outlet 19 → the exhaust duct 20 → the second variable-frequency exhaust fan 18 → the exhaust air deodorizing and sterilizing device 17 → the first variable-frequency exhaust fan 15 → the negative pressure ventilating device 14 → outdoors.
At this time, the second fresh air valve 30 is closed, and the fresh air handling unit 23 is closed.
C. When the fan and the air sterilizing device inside the fresh air unit 23 and the air return unit 8 are opened simultaneously:
the first air supply flow comprises the following steps: part of the outdoor air → the fresh air heat exchanger 33 → the second fresh air valve 30 → the second primary filter 29 → the second intermediate filter 28 → the second air sterilizing device 27 → the second variable frequency blower 24 → the blast pipe 10 → the blast opening 12 → the animal living space;
the second air supply flow is as follows: the other part of the outdoor air → the first fresh air valve 1 → the first primary filter 2 → the first intermediate filter 3 → the first air sterilizing device 4 → the first variable frequency blower 7 → the blast pipe 10 → the blast opening 12 → the animal living area;
the air exhaust flow is as follows: indoor polluted air → the exhaust outlet 19 → the exhaust duct 20 → the second variable-frequency exhaust fan 18 → the exhaust air deodorizing and sterilizing device 17 → the first variable-frequency exhaust fan 15 → the negative pressure ventilating device 14 → outdoors.
The control method comprises the following steps:
the dry bulb temperature sensor 34, the humidity sensor 35 and the harmful gas concentration sensor 36 which are arranged in the animal living area detect the environmental control parameters of the animal living area. Further, the outdoor air inlet is disposed with a dry bulb temperature sensor 34 and a humidity sensor 35. These sensor data are transmitted to the controller 9. The controller 9 determines that the indoor and outdoor meteorological conditions meet the requirement of direct fresh air input according to preset control parameter target values and control algorithm programs, and respectively sends out control instructions to control the refrigerating capacity (or heating capacity) of the fourth surface type heat exchanger 26 and the third surface type heat exchanger 25 in the fresh air unit 23 and the closing of the first surface type heat exchanger 5 and the second surface type heat exchanger 6 in the return air unit 8. Meanwhile, the controller 9 sends out an instruction according to a matching algorithm program between the fresh air volume and the exhaust air volume, and controls the rotation speeds of the second variable-frequency blower 24 (or the first variable-frequency blower 7, or both the two are turned on simultaneously), the second variable-frequency exhaust fan 18 and the first variable-frequency exhaust fan 15, so that the fresh air volume and the exhaust air volume are accurately controlled. Through the control mode, the air quality in a room is maintained, meanwhile, the phenomenon that the ventilation quantity is too large or too small is prevented, the ventilation is controlled according to the requirement, and therefore the energy-saving operation of the environment control system is achieved. The actual flow of the exhaust air processing unit can be detected by the flow sensor 37 in front of the second variable-frequency exhaust fan 18, and when the negative pressure generated by the negative pressure ventilation device 14 and the pressure head generated by the second variable-frequency exhaust fan 18 are enough to overcome the flow resistance of the exhaust air processing unit, the controller 9 sends an instruction to close the first variable-frequency exhaust fan 15, thereby further saving energy.
(5) Fresh air operation mode with part of fresh air for refrigeration or heating treatment and part of fresh air directly entering
Under some working conditions, if the outdoor meteorological conditions meet the requirement that part of fresh air is directly fed in, the refrigerating or heating system of the return fan unit 8 is closed, and part of fresh air is directly fed into the room without heat and humidity treatment; the other part of fresh air is subjected to heat and humidity treatment through the fresh air unit 23, and the exhaust air treatment unit is opened at the same time.
A. The fresh air without heat and humidity treatment flows are that outdoor air → a first fresh air valve 1 → a first primary filter 2 → a first intermediate filter 3 → a first air sterilizing device 4 → a first variable frequency blower 7 → a blast pipe 10 → a blast opening 12 → an animal living area;
B. the fresh air after heat and humidity treatment flows through the processes of outdoor air → the fresh air heat exchanger 33 → the second fresh air valve 30 → the second primary filter 29 → the second intermediate filter 28 → the second air sterilizing device 27 → the fourth surface heat exchanger 26 → the third surface heat exchanger 25 → the second variable-frequency blower 24 → the blast pipe 10 → the blast opening 12 → the animal living area;
C. the air exhaust process comprises the following steps: indoor polluted air → the exhaust outlet 19 → the exhaust duct 20 → the second variable-frequency exhaust fan 18 → the exhaust air deodorizing and sterilizing device 17 → the exhaust air heat exchanger 16 → the first variable-frequency exhaust fan 15 → the negative pressure ventilating device 14 → outdoors.
At this time, the first fresh air valve 1 is opened, and the variable frequency return fan 31 and the return air valve 32 are closed.
The control method comprises the following steps:
the dry bulb temperature sensor 34, the humidity sensor 35 and the harmful gas concentration sensor 36 which are arranged in the animal living area detect the environmental control parameters of the animal living area. Further, the outdoor air inlet is disposed with a dry bulb temperature sensor 34 and a humidity sensor 35. These sensor data are transmitted to the controller 9. The controller 9 judges that indoor and outdoor meteorological conditions meet the requirements that part of fresh air is directly input and part of fresh air needs heat and humidity treatment according to preset control parameter target values and control algorithm programs, and respectively sends out control instructions to control the opening of the refrigerating capacity (or heating capacity) of the fourth surface type heat exchanger 26 and the third surface type heat exchanger 25 in the fresh air unit 23; controlling the first surface type heat exchanger 5 and the second surface type heat exchanger 6 in the return fan unit 8 to be closed; the first fresh air valve 1 is controlled to be opened, and the variable frequency return fan 31 and the return air valve 32 are controlled to be closed. Meanwhile, the controller 9 sends out an instruction according to a matching algorithm program between the fresh air volume and the exhaust air volume, and controls the rotation speeds of the second variable-frequency blower 24 (or the first variable-frequency blower 7, or both the two are turned on simultaneously), the second variable-frequency exhaust fan 18 and the first variable-frequency exhaust fan 15, so that the fresh air volume and the exhaust air volume are accurately controlled. Through the control mode, the air quality in a room is maintained, meanwhile, the phenomenon that the ventilation quantity is too large or too small is prevented, the ventilation is controlled according to the requirement, and therefore the energy-saving operation of the environment control system is achieved. The actual flow of the exhaust air processing unit can be detected by the flow sensor 37 in front of the second variable-frequency exhaust fan 18, and when the negative pressure generated by the negative pressure ventilation device 14 and the pressure head generated by the second variable-frequency exhaust fan 18 are enough to overcome the flow resistance of the exhaust air processing unit, the controller 9 sends an instruction to close the first variable-frequency exhaust fan 15, thereby further saving energy.
The fan returning unit 8 of the embodiment can simultaneously process the design mode of fresh air, which is equivalent to the backup of the fresh air unit 23, and the reliability of the system is improved.
The operation mode of the independent fresh air conditioning system can be realized. At the moment, the refrigeration system of the fresh air unit 23 is controlled to operate independently, so that the fresh air bears all the moisture load of the system, namely bears all the latent heat load and part of the sensible heat load in the room besides the fresh air load; and the residual sensible heat load in the room is borne by the air return fan set 8. Therefore, the refrigerating machine of the air return unit 8 can be kept to operate at a higher evaporation temperature, and the energy efficiency of the system is improved. Simultaneously, the fan unit 8 that returns realizes the operation of dry coil pipe, can effectively prevent the environmental pollution problem because of ponding production. Therefore, the design has the potential of energy conservation and is beneficial to the indoor air quality.
At this time, the air processing flow is the same as the flow of the above-mentioned "demand control ventilation mode of simultaneously starting the fresh air handling unit 23, the air return unit 8 and the exhaust air handling unit".
The control method comprises the following steps:
the dry bulb temperature sensor 34, the humidity sensor 35 and the harmful gas concentration sensor 36 which are arranged in the animal living area detect the environmental control parameters of the animal living area. These sensor data are transmitted to the controller 9. The controller 9 respectively sends out control instructions according to preset control parameter target values and a control algorithm program of an independent fresh air conditioning system operation mode, and controls the evaporation temperature and the refrigerating capacity of a fourth surface heat exchanger 26 or a third surface heat exchanger 25 in the fresh air handling unit 23 and the rotating speed of a second variable-frequency blower 24, so that the fresh air bears all the wet load of the system, and the indoor humidity control requirement is met; and controlling the evaporation temperature of the first surface type heat exchanger 5 or the second surface type heat exchanger 6 in the return air unit 8 to be higher than the dew point temperature of return air, and keeping the two surface type heat exchangers in a dry coil running state. Meanwhile, the controller 9 sends out an instruction according to a matching algorithm program among the fresh air volume, the return air volume and the exhaust air volume, and controls the rotating speeds of the second variable-frequency blower 24, the first variable-frequency blower 7, the variable-frequency return fan 31, the second variable-frequency exhaust fan 18 and the first variable-frequency exhaust fan 15, so that the fresh air volume, the return air volume and the exhaust air volume are accurately controlled.
Through the control mode, the air quality in a room is maintained, meanwhile, the phenomenon that the ventilation quantity is too large or too small is prevented, the ventilation is controlled according to the requirement, and therefore the energy-saving operation of the environment control system is achieved. The actual flow of the exhaust air processing unit can be detected by the flow sensor 37 in front of the second variable-frequency exhaust fan 18, and when the negative pressure generated by the negative pressure ventilation device 14 and the pressure head generated by the second variable-frequency exhaust fan 18 are enough to overcome the flow resistance of the exhaust air processing unit, the controller 9 sends an instruction to close the first variable-frequency exhaust fan 15, thereby further saving energy.
In addition, the utility model is newly provided with a second variable-frequency exhaust fan 18 and a flow sensor 37 in front of the second variable-frequency exhaust fan, a first variable-frequency exhaust fan 15 and a negative pressure ventilation device 14; the controller 9 can send out instructions according to the matching algorithm program among the fresh air volume, the return air volume and the exhaust air volume, and control the rotating speeds of the second variable-frequency blower 24, the first variable-frequency blower 7, the variable-frequency return fan 31, the second variable-frequency exhaust fan 18 and the first variable-frequency exhaust fan 15, so that the fresh air volume, the return air volume and the exhaust air volume are accurately controlled.
Through the control mode, the air quality in a room is maintained, meanwhile, the phenomenon that the ventilation quantity is too large or too small is prevented, the ventilation is controlled according to the requirement, and therefore the energy-saving operation of the environment control system is achieved. The actual flow of the exhaust air processing unit can be detected by the flow sensor 37 in front of the second variable-frequency exhaust fan 18, and when the negative pressure generated by the negative pressure ventilation device 14 and the pressure head generated by the second variable-frequency exhaust fan 18 are enough to overcome the flow resistance of the exhaust air processing unit, the controller 9 sends an instruction to close the first variable-frequency exhaust fan 15, thereby further saving energy. Through these measures, effectively solved current animal breed house environmental control system and generally adopted the very big exhaust fan of amount of wind, the volume of airing exhaust can't be according to breeding house environmental requirement accurate control, leads to the big problem of fan energy consumption. Compared with the method that only one exhaust fan, the second variable-frequency exhaust fan 18, the first variable-frequency exhaust fan 15 and the negative pressure ventilation device 14 are arranged on the exhaust pipe 20, an exhaust power system is formed, sufficient exhaust pressure heads are effectively guaranteed, and exhaust reliability is greatly improved. This has effectively solved current big amount of wind exhaust fan when reducing the exhaust volume through frequency conversion regulation, its fan pressure head is not enough, and the polluted air of breeding the house can't discharge outdoor smoothly, breeds house ambient air quality and worsens, influences the health of animal, leads to the problem of the emergence of animal disease.
A fourth surface type heat exchanger 26 and a third surface type heat exchanger 25 are arranged in the fresh air handling unit 23; a first surface type heat exchanger 5 and a second surface type heat exchanger 6 are arranged in the air return unit 8; like this, when fourth surface heat exchanger 26 and first surface heat exchanger 5 move under the refrigeration operating mode, can realize fresh air unit 23 and the accurate air supply temperature and humidity control of air return fan group 8 through adjusting the heating capacity of third surface heat exchanger 25 and second surface heat exchanger 6 respectively to lay the basis for realizing the local accurate air supply mode of little difference in temperature. The local accurate air supply mode of little difference in temperature sends wind directly near the animal living area, can effectively improve the air quality in animal living area.
The environment control system of the utility model is provided with an exhaust heat exchanger 16 (a surface heat exchanger or a heat pipe, etc.), a working medium circulating pump 21, a working medium circulating pipeline 22 and a fresh air heat exchanger 33 (a surface heat exchanger or a heat pipe, etc.). The equipment pipelines are combined together to realize the heat exchange between fresh air and exhaust air, recover the energy in the exhaust air and pre-cool or preheat the fresh air, thereby effectively reducing the energy consumption of fresh air treatment and realizing the energy-saving operation of fresh air treatment.
The indirect transfer of the energy of the fresh air and the exhaust air is realized by the flowing of the circulating working medium between the exhaust air heat exchanger 16 and the fresh air heat exchanger 33, so that the cross pollution between the fresh air and the exhaust air can not be generated.
The working process is as follows:
1. refrigeration working condition
In the summer refrigeration working condition, the temperature of outdoor air is higher, and the temperature of exhaust air is lower; the working medium reaches the exhaust heat exchanger 16 through the working medium circulation pipeline 22 under the pushing action of the working medium circulation pump 21, and the working medium is exhausted air and cooled in the exhaust heat exchanger 16; then, the fresh air returns to the fresh air heat exchanger 33 through the working medium circulation pipeline 22, the working medium is heated by outdoor air in the fresh air heat exchanger 33, and the fresh air flows through the outer surface of the fresh air heat exchanger 33 and is cooled, so that the precooling of the fresh air and the energy recovery of the exhaust air are realized; and the process is circulated.
2. Heating condition
In winter heating working conditions, the outdoor air temperature is lower, and the exhaust air temperature is higher; the working medium reaches the exhaust heat exchanger 16 through the working medium circulation pipeline 22 under the pushing action of the working medium circulation pump 21, and the working medium is exhausted in the exhaust heat exchanger 16 to be heated and heated; then, the fresh air returns to the fresh air heat exchanger 33 through the working medium circulation pipeline 22, the working medium is cooled by outdoor air in the fresh air heat exchanger 33, the fresh air flows through the outer surface of the fresh air heat exchanger 33 and is heated, the preheating of the fresh air and the energy recovery of the exhaust air are realized, and the circulation is carried out.
The air supply outlet 12 of the embodiment is arranged above the living area of the animals, and adopts a local short-range accurate air supply mode; the air return opening 13 is arranged at the middle lower part of the animal living area and adopts a local accurate air return mode; the air outlet 19 is arranged below the animal living area. Therefore, the air supply firstly passes through the animal breathing zone, and the animals can be effectively guaranteed to breathe fresh air at the first time. And the air current flows to the lower part of the living area of the animal from the breathing area of the animal, so that the air quality of the living area of the live pig can be better ensured, the sanitary condition for breeding the live pig is maintained, and the incidence rate of diseases is reduced.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (5)
1. The utility model provides a birds poultry breeds house environmental control system, includes a plurality of animal living areas, characterized by: the air conditioner also comprises a fresh air unit, a return air fan unit, an exhaust treatment unit, a heat exchange assembly, an air port assembly, an air supply pipe, a return air pipe, an exhaust pipe and control equipment;
the fresh air unit and the air return unit are used for extracting air, filtering, killing viruses and bacteria, adjusting temperature and humidity and then sending the air out to control the environment of the livestock breeding house;
the exhaust treatment unit is used for extracting air in the exhaust pipe, sterilizing and deodorizing the air and then exhausting the air out of the livestock breeding house;
the heat exchange assembly comprises a fresh air heat exchanger, an exhaust air heat exchanger, a working medium circulating pump and a working medium circulating pipeline, the fresh air heat exchanger and the exhaust air heat exchanger are connected in a closed loop through the working medium circulating pipeline, and the working medium circulating pump is arranged on the working medium circulating pipeline;
the air inlet assembly comprises a plurality of air supply outlets, a plurality of air return outlets and a plurality of air outlets, the air supply outlets are arranged at the upper part of the animal living area, the air return outlets are arranged at one side or more sides of the animal living area, and the air outlets are arranged below the animal living area;
the control equipment comprises a controller, a valve assembly and a sensor assembly, wherein the controller is used for controlling the working states of the fresh air handling unit, the air return handling unit, the exhaust air handling unit and the valve assembly and receiving signals of the sensor assembly, and the sensor assembly is used for detecting the temperature, the humidity, the flow and the concentration of harmful gases of air through a sensor;
the valve assembly comprises a first fresh air valve, a second fresh air valve and a return air valve;
the inlet of the fresh air heat exchanger is communicated with the outside of the livestock breeding house, the outlet of the fresh air heat exchanger is connected with the inlet of the fresh air unit through a second fresh air valve, the outlet of the fresh air heat exchanger is communicated with the inlet of the air return unit through a first fresh air valve, the outlets of the fresh air unit and the air return unit are both connected with the air supply pipe, and the air supply ports are all connected with the air supply pipe;
the plurality of air return ports are connected with the front end of the air return pipe, the tail end of the air return pipe is provided with a variable-frequency air return machine, and the variable-frequency air return machine is connected with an inlet of the air return machine group through the air return valve;
the air outlets are connected with the inlet of the air exhaust processing unit through the air exhaust pipe.
2. The livestock breeding house environment control system of claim 1, wherein:
the fresh air handling unit comprises a second primary filter, a second intermediate filter, a second air sterilizing device, a fourth surface type heat exchanger, a third surface type heat exchanger and a second variable frequency blower which are sequentially connected;
the air return unit comprises a first primary filter, a first intermediate filter, a first air sterilizing device, a first surface type heat exchanger, a second surface type heat exchanger and a first variable frequency blower which are sequentially connected;
the exhaust treatment unit comprises a second variable-frequency exhaust fan, an exhaust deodorizing and sterilizing device, an exhaust heat exchanger, a first variable-frequency exhaust fan and a negative pressure ventilation device which are sequentially connected.
3. The livestock breeding house environment control system of claim 2, wherein: the negative pressure ventilation device is one of a wind cap or a wind-proof skylight or a combination of the wind cap and the wind-proof skylight.
4. The livestock breeding house environment control system of claim 2, wherein: the exhaust heat exchanger and the fresh air heat exchanger are both one of surface heat exchangers or heat pipes or a combination thereof.
5. The livestock breeding house environment control system of claim 2, wherein: the sensor assembly comprises a plurality of dry bulb temperature sensors, a plurality of humidity sensors, a plurality of harmful gas concentration sensors and a plurality of flow sensors; the inlet of the fresh air heat exchanger, the two ends of the first surface type heat exchanger, the two ends of the second surface type heat exchanger, the two ends of the third surface type heat exchanger, the two ends of the fourth surface type heat exchanger and the animal living area are respectively provided with a dry-bulb temperature sensor and a humidity sensor; the outlet of the first frequency conversion air feeder, the outlet of the second frequency conversion air feeder, the inlet of the second frequency conversion exhaust fan and the return air pipe are equally divided into flow sensors, and the animal living area is also provided with a plurality of harmful gas concentration sensors.
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| CN202122021462.XU CN216254528U (en) | 2021-08-25 | 2021-08-25 | Poultry and livestock breeding house environment control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113678739A (en) * | 2021-08-25 | 2021-11-23 | 广东唯金智能环境科技有限公司 | Livestock breeding house environment control system and control method thereof |
| CN114631483A (en) * | 2022-04-24 | 2022-06-17 | 权国栋 | Intelligent fresh air deodorization device of cattle and sheep raising room for livestock breeding |
| CN115428735A (en) * | 2022-09-05 | 2022-12-06 | 上海莫兰迪环境科技有限公司 | Air circulation purification and regulation system and method for farm |
-
2021
- 2021-08-25 CN CN202122021462.XU patent/CN216254528U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113678739A (en) * | 2021-08-25 | 2021-11-23 | 广东唯金智能环境科技有限公司 | Livestock breeding house environment control system and control method thereof |
| CN113678739B (en) * | 2021-08-25 | 2023-11-28 | 广东唯金智能环境科技有限公司 | Environment control system and method for livestock breeding house |
| CN114631483A (en) * | 2022-04-24 | 2022-06-17 | 权国栋 | Intelligent fresh air deodorization device of cattle and sheep raising room for livestock breeding |
| CN115428735A (en) * | 2022-09-05 | 2022-12-06 | 上海莫兰迪环境科技有限公司 | Air circulation purification and regulation system and method for farm |
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