Precise air supply air conditioning system for various building hog houses

Abstract

The utility model provides a precise air supply air-conditioning system for various building hog houses, which relates to the technical field of breeding equipment and comprises a cooling water system, a chilled water system and an air system, the cooling water system comprises a screw water chilling unit, a cooling water circulating pump, a comprehensive physicochemical water treater and a cooling tower, the chilled water system comprises a screw water chilling unit, a chilled water circulating pump, a bypass flow type water treater, a constant-pressure water replenishing device and a water replenishing tank, and the air system comprises tail end air supply equipment. The system has the advantages that water is used as a working medium, a cold source is provided for the system by means of the characteristics that the specific heat capacity of the water is large and the water is easy to obtain, and when the water is used as the working medium, compared with other working media such as Freon or ammonia, pollution to the environment is reduced, efficiency is improved, and dual guarantees of environmental protection and economic benefits are achieved.

Description

Technical Field

[0001] This utility model relates to the field of breeding equipment technology, and in particular to a precision air supply air conditioning system for various types of multi-story pig houses. Background Technology

[0002] With the improvement of social development, people's demand for meat and protein has increased rapidly, leading to the rapid development of pig farming and its supporting industries. According to incomplete statistics, the number of large-scale pig farms has increased from 161,000 at the beginning of 2020 to 180,000 currently, with a year-on-year increase of 58.8% in the number of newborn piglets. The demand for pork in 2022 was 55.41 million tons.

[0003] With the advancement of modern breeding technology, pigsties are developing towards large-scale, centralized, and industrialized modern pigsties. The large scale, multi-story nature, and intelligentization of modern pigsties have greatly reduced the cost of pig farming and improved the efficiency of pig farming, and have been widely adopted. However, in the process of pig production, a series of problems affecting the quality of pig farming have emerged. Air quality has a significant impact on the health and growth rate of pigs. However, traditional pigsty ventilation designs typically only address the ventilation within the pigsty itself. In hot and humid regions, they cannot effectively manage the temperature and humidity of the air inside the pigsty, nor can they provide a reasonable airflow distribution or control harmful gases. Furthermore, regardless of whether it's summer or winter, pigsties are prone to exceeding the permitted concentrations of ammonia and hydrogen sulfide. Under such conditions, the health of pigs is compromised, or their growth is slowed, resulting in production losses and impacting the sustainable and healthy supply of pigs to society. Moreover, traditional tunnel ventilation systems require massive ventilation volumes, placing higher demands and challenges on existing deodorization systems. The effectiveness of odor control directly affects the surrounding environment. Therefore, it is essential to research the ventilation and air conditioning systems within pigsties to improve the pigs' growth environment and simultaneously improve the surrounding environment, achieving higher environmental standards.

[0004] At present, the research and application technology of air conditioning in China is quite mature, but there are still some gaps and challenges in the combined application of air conditioning and air conditioning.

[0005] Solving the aforementioned technical problems is the challenge facing this utility model. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a well-designed, simple, safe, and reliable precision air conditioning system for various types of multi-story pigsties. This system utilizes water as the working fluid, taking advantage of water's high specific heat capacity and easy availability to provide a cooling source for the system. Compared to other working fluids such as Freon or ammonia, using water as the working fluid reduces environmental pollution, improves efficiency, and achieves both environmental and economic benefits.

[0007] The technical solution adopted by this utility model to solve its technical problem is: This utility model provides a precision air supply air conditioning system for various types of multi-story pig houses, including a cooling water system, a chilled water system and an air system;

[0008] The cooling water system includes a screw chiller, a cooling water circulation pump, a comprehensive physical and chemical water processor, and a cooling tower;

[0009] The chilled water system includes a screw chiller, a chilled water circulating pump, a bypass water processor, a constant pressure water supply unit, and a water supply tank;

[0010] The air system includes terminal air supply equipment.

[0011] In the cooling water system, one outlet end of the screw chiller unit is connected to the inlet end of the cooling tower, the outlet end of the cooling tower is connected to the inlet end of the integrated physical and chemical water processor, the outlet end of the integrated physical and chemical water processor is connected to the inlet end of the cooling water circulation pump, and the outlet end of the cooling water circulation pump is connected to one inlet end of the screw chiller unit.

[0012] The outlet of the water supply tank in the chilled water system is connected to the inlet of the constant pressure water supply device, and the outlet of the constant pressure water supply device is connected to the inlet of the bypass water processor.

[0013] The outlet of the bypass water processor is connected to the inlet of the chilled water circulation pump, and the outlet of the chilled water circulation pump is connected to one of the inlets of the screw chiller unit.

[0014] The chilled water system includes an automatic water softener, the outlet of which is connected to the inlet of the water replenishment tank.

[0015] The chilled water system includes a terminal air supply device, one outlet end of the screw chiller unit is connected to the inlet end of the terminal air supply device, the outlet end of the terminal air supply device is connected to one inlet end of the screw chiller unit, and one outlet end of the screw chiller unit is connected to the inlet end of the bypass water processor.

[0016] The air system includes a terminal air supply duct, an adjustable flexible air duct, and a terminal air valve;

[0017] The air outlet of the terminal air supply device in the air system is connected to the terminal air supply pipe, the terminal air supply pipe is connected to the adjustable air pipe, and the adjustable air pipe is connected to the terminal air valve.

[0018] The ventilation system includes a trench fan and a deodorizing fan;

[0019] The air outlet of the terminal air valve is connected to the room and the trench fan, and the trench fan is connected to the deodorizing fan through the air duct.

[0020] The terminal air valve is an electric air valve, which is connected to the control system and to the temperature and humidity probes located inside the building. It maintains a positive pressure environment by controlling the air volume of the incoming and outgoing air, thereby ensuring clean indoor air and biological safety.

[0021] The trench ventilation fan is a high negative pressure variable frequency fan. It is controlled by the overall frequency conversion through the front-end electric air valve to synchronously adjust the exhaust air volume and wind speed. At the same time, the fan is made of waterproof and corrosion-resistant materials to ensure that the fan can be used reliably at high frequency for a long time.

[0022] The deodorizing fan is a high negative pressure fixed frequency fan. This fan is the air outlet part of the entire air conditioning system, and at the same time, it takes into account environmental protection requirements to ensure that the exhaust gas discharged by the system meets national environmental protection requirements and standards.

[0023] The terminal air supply duct is made of galvanized steel plate, and the adjustable air duct is a flexible plastic hose with a diameter of φ120. It adopts a flexible connection method and is about 1000mm long. The length, height, and angle are adjustable. In summer, when the air conditioning system is turned on, the main air duct is connected to the flexible hose. The flexible hose can be adjusted to 45 degrees to blow towards the pig's head, increasing the air speed at the pig's head and neck to achieve the corresponding cooling and air outlet effect. Other harmful gases generated by the fresh air passing through the manure slatted board and manure ditch are discharged into the ventilation shaft by the ditch fan. The ventilation shaft is connected to a deodorizing fan, and after being treated by the deodorizing system, it is discharged outdoors.

[0024] The beneficial effects of this utility model are as follows: This utility model uses water as a working fluid, and takes advantage of the characteristics of water's large specific heat capacity and easy availability to provide a cold source for the system. When using water as a working fluid, compared with other working fluids such as Freon or ammonia, it reduces environmental pollution, improves efficiency, and achieves dual protection of environmental protection and economic benefits. Attached Figure Description

[0025] Figure 1 This is the overall flowchart of this utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the terminal air supply pipe of this utility model.

[0027] Figure 3 This is a flowchart of the screw chiller unit of this utility model.

[0028] The attached figures are labeled as follows: 1. Screw chiller unit; 101. Screw compressor; 102. Condenser; 103. Filter; 104. Expansion valve; 105. Evaporator; 2. Chilled water circulation pump; 3. Cooling water circulation pump; 4. Bypass water processor; 5. Integrated physical and chemical water processor; 6. Cooling tower; 7. Constant pressure water supply device; 8. Water supply tank; 9. Automatic water softening equipment; 10. Terminal air supply equipment; 11. Terminal air supply duct; 12. Adjustable flexible air duct; 13. Terminal air valve. Detailed Implementation

[0029] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0030] See Figures 1 to 3 As shown, this embodiment is a precision air conditioning system for various types of multi-story pig houses, including a cooling water system, a chilled water system, and an air system;

[0031] The cooling water system includes a screw chiller 1, a cooling water circulation pump 3, a comprehensive physical and chemical water processor 5, and a cooling tower 6. In the cooling water system, one outlet end of the screw chiller 1 is connected to the inlet end of the cooling tower 6, the outlet end of the cooling tower 6 is connected to the inlet end of the comprehensive physical and chemical water processor 5, the outlet end of the comprehensive physical and chemical water processor 5 is connected to the inlet end of the cooling water circulation pump 3, and the outlet end of the cooling water circulation pump 3 is connected to one inlet end of the screw chiller 1.

[0032] The chilled water system includes a screw chiller 1, a chilled water circulation pump 2, a bypass water processor 4, a constant pressure water supply device 7, and a water supply tank 8. The outlet of the water supply tank 8 is connected to the inlet of the constant pressure water supply device 7, the outlet of the constant pressure water supply device 7 is connected to the inlet of the bypass water processor 4, the outlet of the bypass water processor 4 is connected to the inlet of the chilled water circulation pump 2, and the outlet of the chilled water circulation pump 2 is connected to one of the inlets of the screw chiller 1.

[0033] The chilled water system includes an automatic water softener 9, the outlet of which is connected to the inlet of the water supply tank 8.

[0034] The chilled water system includes a terminal air supply device 10, one outlet end of the screw chiller unit 1 is connected to the inlet end of the terminal air supply device 10, the outlet end of the terminal air supply device 10 is connected to one inlet end of the screw chiller unit 1, and one outlet end of the screw chiller unit 1 is connected to the inlet end of the bypass water processor 2.

[0035] The air system includes a terminal air supply device 10, a terminal air supply duct 11, an adjustable flexible air duct 12, and a terminal air valve 13. The air outlet of the terminal air supply device 10 is connected to the terminal air supply duct 11, the terminal air supply duct 11 is connected to the adjustable air duct 12, and the adjustable air duct 12 is connected to the terminal air valve 13.

[0036] The ventilation system includes a trench fan and a deodorizing fan. The air outlet of the terminal air valve 13 is connected to the room and the trench fan. The trench fan is connected to the deodorizing fan through the air duct. The terminal air valve 13 is an electric air valve, connected to the control system, and connected to temperature and humidity probes located in the building. By controlling the air volume of the incoming and outgoing air, the indoor pressure is maintained at a positive pressure environment to ensure clean indoor air and biological safety. The trench fan is a high negative pressure variable frequency fan, which is controlled by the overall frequency conversion of the front-end electric air valve to synchronously adjust the exhaust air volume and speed. At the same time, the fan is made of waterproof and corrosion-resistant materials to ensure reliable high-frequency use of the fan for a long time. The deodorizing fan is a high negative pressure fixed frequency fan. This fan is the air outlet of the entire air conditioning system. It also takes into account environmental protection requirements to ensure that the exhaust gas discharged by the system meets national environmental protection requirements and standards.

[0037] The terminal air supply duct 11 is made of galvanized steel plate, and the adjustable air duct 12 is a flexible hose made of plastic with a diameter of φ120. It adopts a flexible connection method and is about 1000mm long. The length, height and angle can be adjusted. In summer, when the air conditioning system is turned on, the main air duct is connected to the flexible hose. The flexible hose can be adjusted to 45 degrees to blow towards the pig's head, increasing the wind speed at the pig's head and neck, so as to achieve the corresponding cooling and air supply effect. Other harmful gases generated by the fresh air passing through the manure slatted board and manure ditch are discharged into the ventilation shaft by the ditch fan. The ventilation shaft is connected to the deodorizing fan, and after being treated by the deodorizing system, it is discharged outdoors.

[0038] This system comprises three circulation systems: a refrigeration system, a chilled water circulation system, and a cooling water circulation system. The refrigeration system includes internal circulation within a screw chiller unit 1. The screw chiller unit 1 includes a screw compressor 101, a condenser 102, a filter 103, an expansion valve 104, and an evaporator 105. The refrigerant in the screw compressor 101 circulates sequentially through the screw compressor 101, condenser 102, expansion valve 104, evaporator 105, and back to the screw compressor 101. The chilled water circulation system's chilled water flow is sequentially: evaporator within the screw chiller unit 1, chilled water circulation pump 2, terminal air supply equipment 10, and evaporator 105. The cooling water circulation system's cooling water flow is sequentially: condenser 102 within the screw chiller unit 1, cooling tower 6, cooling water circulation pump 3, and back to condenser 102.

[0039] When the air conditioning system provides cooling, chilled water flows sequentially through the integrated physical and chemical water processor 5, chilled water circulation pump 2, screw chiller unit 1, and terminal air supply equipment 10. After absorbing heat from the air in the cooling tower 6, the chilled water flows sequentially through the integrated physical and chemical water processor 5 and cooling water circulation pump 3, and enters the screw chiller unit 1. After exchanging heat with the chilled water in the screw chiller unit 1, it enters the terminal air supply equipment 10 to provide cooling for the pigsty.

[0040] Compared to traditional evaporative cooling pad fan systems, this invention significantly improves cooling efficiency when outdoor temperatures reach 32℃ and humidity exceeds 70% in summer. As the system continues to operate, the cooling capacity decreases and stabilizes. Even when summer temperatures reach 40℃ and humidity exceeds 80%, the pigsty's activity space can maintain a relatively stable temperature of 22-26℃ and humidity of 55-60% throughout the year. Under the same cooling and heating conditions, this precision air-conditioning system is more energy-efficient than traditional systems, achieving an energy reduction rate of 32.6%, demonstrating significant energy savings.

[0041] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A precision air supply air conditioning system for various types of multi-story pigsties, characterized in that, This includes cooling water systems, chilled water systems, and air systems; The cooling water system includes a screw chiller (1), a cooling water circulation pump (3), a comprehensive physical and chemical water processor (5), and a cooling tower (6). The chilled water system includes a screw chiller (1), a chilled water circulation pump (2), a bypass water processor (4), a constant pressure water supply unit (7), and a water supply tank (8). The air system includes terminal air supply equipment (10).

2. The precision air supply air conditioning system for various types of multi-story pigsties according to claim 1, characterized in that, One of the outlet ends of the screw chiller unit (1) in the cooling water system is connected to the inlet end of the cooling tower (6), the outlet end of the cooling tower (6) is connected to the inlet end of the integrated physical and chemical water processor (5), the outlet end of the integrated physical and chemical water processor (5) is connected to the inlet end of the cooling water circulation pump (3), and the outlet end of the cooling water circulation pump (3) is connected to one of the inlet ends of the screw chiller unit (1).

3. The precision air supply air conditioning system for various types of multi-story pigsties according to claim 1, characterized in that, The outlet of the water supply tank (8) in the chilled water system is connected to the inlet of the constant pressure water supply device (7), and the outlet of the constant pressure water supply device (7) is connected to the inlet of the bypass water processor (4). The outlet end of the bypass water processor (4) is connected to the inlet end of the chilled water circulation pump (2), and the outlet end of the chilled water circulation pump (2) is connected to one of the inlet ends of the screw chiller unit (1).

4. The precision air supply air conditioning system for various types of multi-story pigsties according to claim 3, characterized in that, The chilled water system includes an automatic water softener (9), the outlet of which is connected to the inlet of the water supply tank (8).

5. The precision air supply air conditioning system for various types of multi-story pigsties according to claim 4, characterized in that, The chilled water system includes a terminal air supply device (10), one of the outlet ends of the screw chiller unit (1) is connected to the inlet end of the terminal air supply device (10), the outlet end of the terminal air supply device (10) is connected to one of the inlet ends of the screw chiller unit (1), and one of the outlet ends of the screw chiller unit (1) is connected to the inlet end of the chilled water circulation pump (2).

6. The precision air supply air conditioning system for various types of multi-story pigsties according to claim 1, characterized in that, The air system includes a terminal air supply duct (11), an adjustable air duct (12), and a terminal air valve (13). The air outlet of the terminal air supply device (10) in the air system is connected to the terminal air supply pipe (11), the terminal air supply pipe (11) is connected to the adjustable air pipe (12), and the adjustable air pipe (12) is connected to the terminal air valve (13).

7. The precision air supply air conditioning system for various types of multi-story pigsties according to claim 6, characterized in that, The ventilation system includes a trench fan and a deodorizing fan; The air outlet of the terminal air valve (13) is connected to the room and the trench fan, and the trench fan is connected to the deodorizing fan through the air duct.

8. The precision air supply air conditioning system for various types of multi-story pigsties according to claim 7, characterized in that, The terminal air valve (13) is an electric air valve, which is connected to the control system and to the temperature and humidity probes located inside the building.

9. The precision air supply air conditioning system for various types of multi-story pigsties according to claim 7, characterized in that, The trench ventilation fan is a high negative pressure variable frequency fan, made of corrosion-resistant material; The deodorizing fan is a high negative pressure fixed frequency fan.

10. The precision air supply air conditioning system for various types of multi-story pigsties according to claim 6, characterized in that, The terminal air supply pipe (11) is made of galvanized steel plate; The adjustable duct (12) is a flexible hose made of plastic.

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