A duct with switchable ventilation mode

Abstract

The application discloses a duct capable of switching ventilation modes and relates to the field of ventilation devices. The duct capable of switching ventilation modes comprises a ventilation duct body, a lower-layer air outlet and an upper-layer air outlet are respectively arranged at the bottom and the top of the ventilation duct body, a fixed upper-layer diaphragm is arranged in the ventilation duct body, a movable partition layer is arranged in the ventilation duct body, and one side of the partition layer is fixed to the ventilation duct body. The duct capable of switching ventilation modes is designed in two ventilation modes for precise ventilation of a traditional pipeline, the two ventilation modes can be switched, the direction of the air outlet can be adjusted, fresh air can directly blow to pigs in spring and autumn, direct blowing to the pigs can be avoided in winter, meanwhile, the travel of the fresh air in the pipeline is increased in the winter mode, the preheating effect of the fresh air is improved, and the cold stress probability of the pigs is reduced.

Description

Technical Field

[0001] This invention relates to the field of ventilation device technology, specifically to a duct with switchable ventilation modes. Background Technology

[0002] In the pig farming industry, precision ventilation through ducts is a major trend. It uses a main duct to bring in air and has vents in each pen that are directed at the pigs, allowing fresh air to blow directly onto them. This achieves high perceived airflow while reducing the amount of air needed, which greatly reduces the ventilation pressure for subsequent deodorization and lowers operating costs.

[0003] In winter, the outside air is colder than the inside of the pigsty. If it is directly delivered to the pens through ductwork precision ventilation, the low temperature can easily cause cold stress in the pigs. Therefore, in winter, it is necessary to adjust the direction of the air outlets and preheat the fresh air by using the existing air in the pigsty through the ducts to minimize the chance of cold stress in the pigs. However, current ductwork precision ventilation can only be used in one ventilation mode and cannot adjust the direction of the air outlets. At the same time, the preheating effect on fresh air is also limited. To address the shortcomings of existing technologies, this invention provides a ductwork with switchable ventilation modes to solve the above problems. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a duct with switchable ventilation modes. The duct is divided into upper and lower layers by a partition, thus forming two ventilation modes. In one mode, the air outlet faces downwards, blowing directly onto the pigs, while in the other mode, the air outlet faces upwards to avoid blowing directly onto the pigs. In this mode, the fresh air first passes through the lower layer of the duct to the end of the duct, and then returns to the upper layer of the duct, exiting from the upper air outlet. This extends the preheating time of the fresh air in the duct and improves the preheating effect.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a duct with switchable ventilation modes, comprising a duct body, wherein a lower air outlet and an upper air outlet are respectively provided at the bottom and top of the duct body;

[0008] The ventilation duct body has a fixed upper diaphragm inside, and a movable partition inside, with one side of the partition fixed to the ventilation duct body.

[0009] When the partition is attached to the upper diaphragm, it is the spring and autumn mode, and fresh air is discharged from the lower air outlet. When the partition is attached to the bottom wall of the inner cavity of the ventilation duct body, it is the winter mode, and fresh air is discharged through the upper air outlet.

[0010] Preferably, a first zipper is provided between the partition layer and the upper partition membrane.

[0011] Preferably, a second zipper is provided between the partition and the main body of the ventilation duct.

[0012] Preferably, the interlayer material is a flexible material.

[0013] Preferably, the flexible material is fabric.

[0014] Preferably, the flexible material is a flexible plastic film.

[0015] Preferably, the number of lower and upper air outlets is 1-3 rows.

[0016] Preferably, the diameter of the lower and upper air outlets is between 30 and 300 mm.

[0017] This invention discloses a duct with switchable ventilation modes, which has the following beneficial effects:

[0018] This switchable ventilation duct combines traditional precision duct ventilation with two separate ventilation modes that can be switched and adjusted. In spring and autumn, fresh air is directed directly to the pigs, while in winter, direct airflow is avoided. The winter mode also increases the travel distance of fresh air within the duct, improving preheating and reducing cold stress in pigs. The device boasts a superior overall design, low cost, and simple, convenient operation when switching ventilation modes, saving time and effort and meeting user needs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a first-view schematic diagram of the ventilation structure of the present invention in spring and autumn.

[0021] Figure 2 This is a second perspective view of the ventilation structure diagram for spring and autumn of the present invention;

[0022] Figure 3 This is a first-view schematic diagram of the winter ventilation structure of the present invention;

[0023] Figure 4 This is a second perspective view of the winter ventilation structure of the present invention;

[0024] Figure 5This is a schematic diagram of the zipper of the present invention;

[0025] Figure 6 This is a schematic diagram of the air outlet of the present invention.

[0026] In the diagram: 1. Main body of ventilation duct; 101. Lower air outlet; 102. Upper air outlet; 2. Upper diaphragm; 3. Partition; 4. First zipper; 5. Second zipper. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] This application provides a duct with switchable ventilation modes, solving the problems that current precision ventilation systems can only be used in one mode, cannot adjust the direction of the air outlet, and have limited preheating effect on fresh air. This duct with switchable ventilation modes designs two ventilation modes that can be switched between, and allows adjustment of the air outlet direction. In spring and autumn, fresh air is directed directly to the pigs, while in winter, direct airflow to the pigs is avoided. In winter mode, the travel distance of fresh air inside the duct is increased, improving the preheating effect of fresh air and reducing the probability of cold stress in pigs. The device has a good overall structure, low cost, and is simple and convenient to operate when switching ventilation modes, saving time and effort and meeting the usage requirements.

[0029] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0030] Example 1:

[0031] This invention discloses a duct with switchable ventilation modes, according to the attached... Figure 1-6 As shown, it includes a ventilation duct body 1, with a lower air outlet 101 and an upper air outlet 102 respectively opened at the bottom and top of the ventilation duct body 1.

[0032] The ventilation duct body 1 has a fixed upper diaphragm 2 inside, and a movable partition 3 inside, with one side of the partition 3 fixed to the ventilation duct body 1.

[0033] When the partition 3 is attached to the upper partition 2, it is the spring and autumn mode, and fresh air is discharged from the lower air outlet 101. When the partition 3 is attached to the inner bottom wall of the ventilation duct body 1, it is the winter mode, and fresh air is discharged through the upper air outlet 102.

[0034] Furthermore, a first zipper 4 is provided between the partition 3 and the upper diaphragm 2, and a second zipper 5 is provided between the partition 3 and the main body of the ventilation duct 1. The two sets of zippers facilitate the adjustment of the position of the partition 3, thereby enabling structural changes and switching of the air duct, which is convenient and simple to operate.

[0035] Specifically, the material of the partition 3 is a flexible material, which is cloth. Using cloth to make the partition 3 is low-cost and easy to maintain when damaged. The cloth should be made of a non-breathable, soft and durable material to improve the performance of the partition 3.

[0036] The cooperation of the upper diaphragm 2 and partition 3 inside the ventilation duct body 1 divides the internal space of the ventilation duct body 1 into two parts, thereby changing the ventilation mode of the ventilation duct body 1. The ventilation mode is divided into a direct blowing mode in spring and autumn and a non-direct blowing preheating mode in winter. Preheating is achieved by transferring heat from inside the pigsty to the ventilation duct body 1, thereby preheating the flowing fresh air. In the non-direct blowing preheating mode in winter, the cooperation of the upper diaphragm 2 and partition 3 forms a barrier, making the fresh air travel a longer path through the interior of the ventilation duct body 1. It first passes through the bottom part of the ventilation duct body 1, then reaches the end of the ventilation duct body 1, then passes through the upper part of the ventilation duct body 1, and finally is discharged through the upper air outlet 102. This process increases the time for fresh air to pass through the ventilation duct body 1, thus improving the preheating effect of fresh air, reducing stress on pigs, improving the breeding effect of pigs, and preventing pigs from getting sick.

[0037] When switching to the spring and autumn direct blowing mode, the first zipper 4 is used to close the gap between the partition 3 and the upper partition 2, and the partition 3 and the upper partition 2 are attached. At this time, when the fresh air passes through the ventilation duct body 1, it passes through the space between the ventilation duct body 1 and the partition 3, and is blown out through the lower air outlet 101, so that the fresh air blows directly to the pigs.

[0038] When switching to the winter non-direct blowing preheating mode, the second zipper 5 is used to seal the partition 3 and the bottom wall of the inner cavity of the ventilation duct body 1. The partition 3 is in close contact with the bottom wall of the inner cavity of the ventilation duct body 1. At this time, when the fresh air passes through the ventilation duct body 1, it first passes through the lower channel between the upper diaphragm 2 and the ventilation duct body 1. When it reaches the end of the duct, it turns back and passes through the upper channel between the ventilation duct body 1 and the upper diaphragm 2. Finally, it is discharged from the upper air outlet 102. This process avoids the fresh air blowing directly to the pigs in winter and increases the path of the fresh air in the ventilation duct body 1. It improves the heat conduction from inside the pigsty to the ventilation duct body 1 and the preheating effect of the fresh air inside the ventilation duct body 1, ensuring that the fresh air has a good effect in winter.

[0039] This switchable ventilation duct combines traditional precision duct ventilation with two separate ventilation modes that can be switched and adjusted. In spring and autumn, fresh air is directed directly to the pigs, while in winter, direct airflow is avoided. The winter mode also increases the travel distance of fresh air within the duct, improving preheating and reducing cold stress in pigs. The device boasts a superior overall design, low cost, and simple, convenient operation when switching ventilation modes, saving time and effort and meeting user needs.

[0040] Example 2:

[0041] This invention discloses a duct with switchable ventilation modes, according to the attached... Figure 1-6 As shown, it includes a ventilation duct body 1, with a lower air outlet 101 and an upper air outlet 102 respectively opened at the bottom and top of the ventilation duct body 1.

[0042] The ventilation duct body 1 has a fixed upper diaphragm 2 inside, and a movable partition 3 inside, with one side of the partition 3 fixed to the ventilation duct body 1.

[0043] When the partition 3 is attached to the upper partition 2, it is the spring and autumn mode, and fresh air is discharged from the lower air outlet 101. When the partition 3 is attached to the inner bottom wall of the ventilation duct body 1, it is the winter mode, and fresh air is discharged through the upper air outlet 102.

[0044] Furthermore, a first zipper 4 is provided between the partition 3 and the upper diaphragm 2, and a second zipper 5 is provided between the partition 3 and the main body of the ventilation duct 1.

[0045] Specifically, the partition layer 3 is made of a flexible plastic film. Replacing the traditional fabric material with a flexible plastic film improves the partition layer 3's ability to separate fresh air and enhances the overall durability of the device. The flexible plastic film is a thin, continuous polymer material made of thermoplastic. Thermoplastics are plastic polymers that become flexible when cooled or molded and cured at a certain elevated temperature. Most thermoplastics have high molecular weights. The polymer chains are bound together by intermolecular forces, which weaken rapidly as the temperature rises, producing a viscous liquid. In this state, the thermoplastic can be reformed.

[0046] The production process includes, but is not limited to, the following steps:

[0047] Plastic extrusion can be used to cast, cool, or quench films and then roll them into rolls.

[0048] Extruded films can be stretched, thinned, or oriented in one or both directions. Blow-blown or tubular processes force air into the extrusion rings to expand the film. A flat tenter frame stretches the extruded film before annealing.

[0049] Calendering rolls can be used to form films from thermopolymers.

[0050] Solution deposition is another film-forming process.

[0051] Scraping is used to scrape a film off a solid surface.

[0052] Co-extrusion involves extruding two or more different polymers into a single film.

[0053] Extrusion coating is used to form a film on another film or substrate.

[0054] In the above manufacturing method, the formed flexible plastic film is adapted to the interior of the diaphragm 2 and the ventilation duct body 1, thereby ensuring convenient use in the future.

[0055] Example 3:

[0056] This invention discloses a duct with switchable ventilation modes, according to the attached... Figure 1-6 As shown, it includes a ventilation duct body 1, with a lower air outlet 101 and an upper air outlet 102 respectively opened at the bottom and top of the ventilation duct body 1.

[0057] The ventilation duct body 1 has a fixed upper diaphragm 2 inside, and a movable partition 3 inside, with one side of the partition 3 fixed to the ventilation duct body 1.

[0058] When the partition 3 is attached to the upper partition 2, it is the spring and autumn mode, and fresh air is discharged from the lower air outlet 101. When the partition 3 is attached to the inner bottom wall of the ventilation duct body 1, it is the winter mode, and fresh air is discharged through the upper air outlet 102.

[0059] Furthermore, a first zipper 4 is provided between the partition 3 and the upper diaphragm 2, and a second zipper 5 is provided between the partition 3 and the main body of the ventilation duct 1.

[0060] Specifically, the third layer is made of a flexible material.

[0061] Furthermore, the number of lower air outlets 101 and upper air outlets 102 is 1-3 rows. The multiple rows of lower air outlets 101 and upper air outlets 102 are designed according to the actual situation to ensure good fresh air ventilation for pigs. The number of openings in the multiple rows of lower air outlets 101 and upper air outlets 102 allows for multiple air blowing directions and a large range during the blowing process.

[0062] Furthermore, the diameter of the lower air outlet 101 and the upper air outlet 102 is between 30-300mm. The diameter of the lower air outlet 101 and the upper air outlet 102 is designed according to actual needs and the size of the pipe is set in combination with the number of air outlet pipes to ensure good fresh air ventilation for pigs.

[0063] In summary, compared with existing technologies, this invention designs two ventilation modes for traditional duct precision ventilation, which can be switched and the direction of the ventilation openings can be adjusted. In spring and autumn, fresh air is directed directly to the pigs, while in winter, direct airflow is avoided. In the winter mode, the travel distance of fresh air inside the duct is increased, improving the preheating effect of the fresh air and reducing the probability of cold stress in pigs. The device has a good overall structure, low cost, and is simple and convenient to operate when switching ventilation modes, saving time and effort and meeting the usage requirements.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A duct with switchable ventilation modes, comprising a duct body (1), characterized in that: The bottom and top of the ventilation duct body (1) are respectively provided with a lower air outlet (101) and an upper air outlet (102); the ventilation duct body (1) is provided with a fixed upper diaphragm (2) inside, and the ventilation duct body (1) is provided with a movable partition (3) inside, with one side of the partition (3) fixed to the ventilation duct body (1); The ventilation modes are divided into direct blowing mode in spring and autumn and non-direct blowing preheating mode in winter. The preheating is the transfer of heat from inside the pig house to the main body of the ventilation duct (1). When the partition (3) is attached to the upper diaphragm (2), it is the direct blowing mode in spring and autumn, and fresh air is discharged from the lower air outlet (101). When the partition (3) is attached to the inner wall of the ventilation duct body (1), it is the non-direct blowing preheating mode in winter, and fresh air is discharged through the upper air outlet (102). The material of the partition (3) is a flexible material; A first zipper (4) is provided between the partition (3) and the upper diaphragm (2); a second zipper (5) is provided between the partition (3) and the ventilation duct body (1); The non-direct blowing preheating mode in winter uses a second zipper (5) to seal the partition (3) and the bottom wall of the ventilation duct body (1). The partition (3) is attached to the bottom wall of the ventilation duct body (1). When fresh air passes through the ventilation duct body (1), it first passes through the lower channel between the upper diaphragm (2) and the ventilation duct body (1). When it reaches the end of the ventilation duct body (1), it turns back and passes through the upper channel between the ventilation duct body (1) and the upper diaphragm (2). Finally, it is discharged from the upper air outlet (102). This process avoids fresh air blowing directly to pigs in winter and increases the path of fresh air in the ventilation duct body (1), thus improving the preheating effect of fresh air.

2. The air duct with switchable ventilation modes according to claim 1, characterized in that: The flexible material is cloth.

3. The air duct with switchable ventilation modes according to claim 1, characterized in that: The flexible material is a flexible plastic film.

4. The air duct with switchable ventilation modes according to claim 1, characterized in that: The number of lower air outlets (101) and upper air outlets (102) is 1-3 rows.

5. A duct with switchable ventilation modes according to claim 4, characterized in that: The diameter of the lower air outlet (101) and the upper air outlet (102) is between 30 and 300 mm.

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