Anti-freezing device for micro-positive pressure ventilation system

Abstract

The utility model relates to a ventilation equipment technical field discloses a kind of anti-freezing device of micro-positive pressure ventilation system, including air supply pipe group and the anti-freezing network connected with air supply pipe group, the anti-freezing network is connected with the heat source device for heating anti-freezing fluid, circulation pump for providing circulating power for anti-freezing fluid is connected between the anti-freezing network and the heat source device, the air inlet end and the air outlet end of air supply pipe group are provided with temperature sensor;The utility model can keep warm air supply to avoid heat loss in ordinary times, can be used as second heat source in emergency, ensure the air supply temperature of ventilation system under the condition that first heat source fails, effectively avoid that air supply temperature fluctuation is big, causes livestock and poultry cold and hot stress.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, specifically to an antifreeze device for a micro-positive pressure ventilation system. Background Technology

[0002] Currently, both domestic and international livestock farming utilizes negative pressure ventilation. The simple principle is that exhaust fans at the end of the livestock shed lower the air pressure inside. This pressure difference forces outside air into the shed. The entry points for this air are mostly small windows in the side walls, but roof windows, gable windows, or side wall ducts are also possible. Traditional small-window ventilation systems are typically single-building structures, requiring a certain width for the shed.

[0003] Currently, in the negative pressure ventilation mode, outside air enters the chicken house directly without treatment, resulting in drastic changes in the indoor environment and a greater impact from external climate changes. At the same time, airborne pathogens spread, causing disease transmission and putting significant pressure on disease prevention and control.

[0004] Currently, some livestock and poultry houses use positive pressure ventilation combined with high-efficiency filtration ventilation, which has high investment costs, high operating costs, and poor disease prevention effect.

[0005] To address the aforementioned issues, Chinese utility model patent CN222322481U discloses a windowless livestock and poultry shed with micro-positive pressure ventilation. The shed includes a windowless structure, an environmental control unit, an air supply duct connected to the environmental control unit, and diffused air ducts distributed along the air supply duct. The environmental control unit is mounted outside the windowless livestock and poultry shed, and the air supply duct is suspended below the roof of the shed. The windowless livestock and poultry shed has a windowless structure, with air outlets flowing into the environmental control unit. This utility model features a design without side-wall ventilation windows, combined with a positive pressure active air supply method using the environmental control unit. Positive pressure active air supply centrally processes fresh air, preventing the spread of pathogens from outside air. Uniform air distribution avoids large fluctuations in supply air temperature, preventing heat and cold stress in livestock and poultry. It reduces ventilation dead zones in the livestock and poultry shed, ensuring consistent fresh air exchange in all areas, improving air management efficiency, enhancing livestock and poultry farming performance, and overall improving the profitability of the livestock and poultry industry.

[0006] However, when the single heat source of the environmental control host used for temperature control in the above-mentioned ventilation system suddenly stops, in the winter of cold regions, the cold air from the outside quickly enters the livestock and poultry house through the air supply duct group, resulting in large fluctuations in the air supply temperature, which can easily cause cold and heat stress in livestock and poultry. Utility Model Content

[0007] The purpose of this invention is to provide an antifreeze device for a micro-positive pressure ventilation system that can keep the air warm and prevent heat loss during normal operation, serve as a second heat source in emergencies, and ensure the air supply temperature of the ventilation system in the event of failure of the first heat source, effectively avoiding large fluctuations in air supply temperature that could cause cold and heat stress in livestock and poultry.

[0008] This utility model is implemented as follows:

[0009] An antifreeze device for a micro-positive pressure ventilation system includes an air supply duct assembly and an antifreeze network connected to the air supply duct assembly. The antifreeze network is connected to a heat source device for heating antifreeze. A circulation pump for providing circulation power to the antifreeze is connected between the antifreeze network and the heat source device. Temperature sensors are installed at both the air inlet and air outlet of the air supply duct assembly.

[0010] Furthermore, the antifreeze network is fixedly sleeved and covers the outside of the air supply pipe assembly, forming an antifreeze containment cavity with the outer ring side of the air supply pipe assembly.

[0011] Furthermore, the antifreeze network is a flexible conduit, which is wound around the outer ring of the air supply duct assembly, and a heat-conducting flexible component is provided on the side of the antifreeze network close to the air supply duct assembly.

[0012] Furthermore, the air supply duct assembly is provided with multiple air outlets, the temperature sensor is located at the air outlet near the air inlet, and the antifreeze network is located between the air inlet and the air outlet near the air inlet of the air supply duct assembly.

[0013] Furthermore, the antifreeze network is connected to a buried water tank, which contains antifreeze, and a control valve is installed between the buried water tank and the antifreeze network.

[0014] Furthermore, the circulating pump is connected in parallel with a standby circulating pump, and both the circulating pump and the standby circulating pump are connected in series with valves.

[0015] Furthermore, it also includes a controller, to which both the heat source device and the two temperature sensors are connected.

[0016] Furthermore, a pressure gauge for monitoring the antifreeze pressure is connected between the antifreeze network and the heat source device.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] In practical applications, the antifreeze network is filled with antifreeze, which circulates within the antifreeze network and the heat source device under the action of a circulating pump. A temperature sensor installed at the air inlet of the air supply duct assembly collects air temperature data at the air inlet. Based on the air temperature data at the air inlet of the air supply duct assembly, it is determined whether the temperature-controlled heat source is operating normally. When the temperature-controlled heat source is operating normally, the heat source device operates at low power and heats the antifreeze. The heated antifreeze transfers heat to the air in the air supply duct assembly through the antifreeze network, preventing rapid heat loss from the air at cold temperatures. When the temperature-controlled heat source fails and stops operating, the operating power of the heat source device is adjusted based on the temperature data collected by the temperature sensor at the air outlet of the air supply duct assembly. The heat source device is used as a secondary heat source for the ventilation system, ensuring the air supply temperature of the ventilation system in the event of failure of the primary heat source, and avoiding large fluctuations in air supply temperature that could cause cold and heat stress in livestock and poultry. This invention can keep the air warm and prevent heat loss during normal operation, and can be used as a second heat source in emergencies. In the event of failure of the first heat source, it can ensure the air supply temperature of the ventilation system and effectively avoid large fluctuations in air supply temperature, which could cause cold and heat stress in livestock and poultry. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention;

[0021] Figure 2 This is a structural schematic diagram of another embodiment of the present invention.

[0022] Attached reference numerals: 1. Air supply duct assembly; 2. Antifreeze network; 3. Heat source device; 4. Circulation pump; 5. Temperature sensor; 6. Pressure gauge; 7. Buried water tank; 8. Control valve; 9. Valve; 10. Standby circulation pump. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Please see Figure 1 and Figure 2 An antifreeze device for a micro-positive pressure ventilation system includes an air supply duct assembly 1 and an antifreeze network 2 connected to the air supply duct assembly 1. The antifreeze network 2 is connected to a heat source device 3 for heating antifreeze. A circulation pump 4 for providing circulation power to the antifreeze is connected between the antifreeze network 2 and the heat source device 3. Temperature sensors 5 are installed at both the air inlet and air outlet of the air supply duct assembly 1.

[0025] The antifreeze network 2 is fixedly sleeved and covers the outside of the air supply pipe assembly 1, forming an antifreeze containment cavity with the outer ring side of the air supply pipe assembly 1.

[0026] The antifreeze network 2 is a flexible pipe. The antifreeze network 2 is wound and connected to the outer ring side of the air supply pipe assembly 1. A heat-conducting flexible component is provided on the side of the antifreeze network 2 close to the air supply pipe assembly 1.

[0027] The air supply duct assembly 1 is provided with multiple air outlets, the temperature sensor 5 is located at the air outlet near the air inlet, and the antifreeze network 2 is located between the air inlet and the air outlet near the air inlet of the air supply duct assembly 1.

[0028] The antifreeze network 2 is connected to a buried water tank 7, which contains antifreeze. A control valve 8 is installed between the buried water tank 7 and the antifreeze network 2.

[0029] The circulating pump 4 is connected in parallel with a standby circulating pump 10, and both the circulating pump 4 and the standby circulating pump 10 are connected in series with valves 9.

[0030] It also includes a controller, and the heat source device 3 and the two temperature sensors 5 are both connected to the controller.

[0031] A pressure gauge 6 for monitoring the antifreeze pressure is connected between the antifreeze network 2 and the heat source device 3.

[0032] In practical applications, antifreeze is loaded into the antifreeze network 2. The antifreeze circulates within the antifreeze network 2 and the heat source device 3 under the action of the circulation pump 4. The temperature sensor 5, located at the air inlet of the air supply duct group, collects the air temperature data at the air inlet and transmits it to the controller. The controller determines whether the temperature-controlled heat source is operating normally based on the air temperature data at the air inlet of the air supply duct group. When the temperature-controlled heat source is operating normally, the controller controls the heat source device 3 to operate at low power. The heat source device 3 heats the antifreeze, and the heated antifreeze transfers heat to the air in the air supply duct group 1 through the antifreeze network 2, preventing the rapid loss of air heat at cold temperatures. When the temperature-controlled heat source fails and stops operating, the controller adjusts the operating power of the heat source device 3 based on the temperature data collected by the temperature sensor 5 at the air outlet of the air supply duct group 1, using the heat source device 3 as the second heat source of the ventilation system. In the event of failure of the first heat source, the air supply temperature of the ventilation system is maintained, avoiding large fluctuations in air supply temperature that could cause cold and heat stress in livestock and poultry. This invention can keep the air warm and prevent heat loss during normal operation, and can be used as a second heat source in emergencies. In the event of failure of the first heat source, it can ensure the air supply temperature of the ventilation system and effectively avoid large fluctuations in air supply temperature, which could cause cold and heat stress in livestock and poultry.

[0033] The antifreeze network 2 is fixedly welded to the outer ring side of the air supply duct assembly 1. It transfers antifreeze through the cavity formed by the air supply duct assembly 1 and the outer ring side of the air supply duct assembly 1. The air supply duct assembly 1 is made of a high thermal conductivity alloy, such as aluminum alloy. The antifreeze and air are transferred through the air supply duct assembly 1. The antifreeze network 2 is connected to the heat source device 3 through a hose. The circulation pump 4 is connected to the hose.

[0034] The antifreeze mesh 2 is connected to the air supply duct assembly 1 by wrapping, which facilitates installation and replacement and reduces maintenance costs. The antifreeze mesh 2 is attached to the air supply duct assembly 1 through a heat-conducting flexible component to improve heat conduction efficiency. The air supply duct assembly 1 can be made of aluminum alloy, and the heat-conducting flexible component can be heat-conducting silicone cloth.

[0035] In order to replenish antifreeze in the antifreeze network 2, an underground water tank 7 is connected to the antifreeze network 2, and the underground water tank 7 is filled with antifreeze.

[0036] When the circulating pump 4 fails, the device can be kept running normally by the backup circulating pump 10.

[0037] The controller is specifically a control cabinet.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An antifreeze device for a micro-positive pressure ventilation system, characterized in that: It includes an air supply duct assembly (1) and an antifreeze network (2) connected to the air supply duct assembly (1). The antifreeze network (2) is connected to a heat source device (3) for heating the antifreeze. A circulation pump (4) for providing circulation power to the antifreeze is connected between the antifreeze network (2) and the heat source device (3). Temperature sensors (5) are provided at both the air inlet and air outlet of the air supply duct assembly (1).

2. The antifreeze device for a micro-positive pressure ventilation system according to claim 1, characterized in that, The antifreeze network (2) is fixedly sleeved and covered on the outside of the air supply pipe group (1), forming an antifreeze containment cavity with the outer ring side of the air supply pipe group (1).

3. The antifreeze device for a micro-positive pressure ventilation system according to claim 1, characterized in that, The antifreeze network (2) is a flexible pipe. The antifreeze network (2) is wrapped around the outer ring side of the air supply pipe group (1). A heat-conducting flexible component is provided on the side of the antifreeze network (2) close to the air supply pipe group (1).

4. The antifreeze device for a micro-positive pressure ventilation system according to claim 1, characterized in that, The air supply duct assembly (1) is provided with multiple air outlets, the temperature sensor (5) is located at the air outlet near the air inlet, and the antifreeze network (2) is located between the air inlet and the air outlet near the air inlet of the air supply duct assembly (1).

5. The antifreeze device for a micro-positive pressure ventilation system according to claim 1, characterized in that, The antifreeze network (2) is connected to a buried water tank (7), which contains antifreeze. A control valve (8) is provided between the buried water tank (7) and the antifreeze network (2).

6. The antifreeze device for a micro-positive pressure ventilation system according to claim 1, characterized in that, The circulating pump (4) is connected in parallel with a standby circulating pump (10), and both the circulating pump (4) and the standby circulating pump (10) are connected in series with valves (9).

7. The antifreeze device for a micro-positive pressure ventilation system according to claim 1, characterized in that, It also includes a controller, to which the heat source device (3) and the two temperature sensors (5) are connected.

8. The antifreeze device for a micro-positive pressure ventilation system according to claim 1, characterized in that, A pressure gauge (6) for monitoring the antifreeze pressure is connected between the antifreeze network (2) and the heat source device (3).

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