Side wall circulation temperature control system based on ventilating duct shaped like Chinese character'gui '

Abstract

The utility model provides a side wall circulation temperature control system based on a ventilating duct shaped like a Chinese character'gui ', which comprises a ventilating duct, the ventilating duct comprises a main air duct arranged along a first direction, a first branch air duct arranged along a second direction and an L-shaped second branch air duct, and both the first branch air duct and the second branch air duct are communicated with the main air duct; the ventilation mechanism is connected with the second branch air duct; the main valve is arranged on the main air duct and is used for realizing connection or disconnection between the second branch air duct and the first branch air duct; the second branch air duct comprises a first branch arranged in the first direction and a second branch arranged in the second direction, and the first direction and the second direction are orthogonally arranged; and the main air duct is connected with the second branch. The side wall circulation temperature control system can solve the problem that the ventilation efficiency is low by adopting a single-pipe fan ventilation mode when the local grain temperature of the side wall of a grain pile rises.

Description

Technical Field

[0001] This utility model relates to the field of grain storage ventilation technology. More specifically, it relates to a sidewall circulation temperature control system based on a U-shaped ventilation duct. Background Technology

[0002] Currently, grain warehouses using vertical ventilation systems often employ "mountain"-shaped or "gui"-shaped ventilation ducts. This means that branch ventilation ducts within the warehouse connect to the main ventilation duct in a "mountain" or "gui" shape. Additionally, the ventilation system is equipped with fans. However, during winter cooling and ventilation or summer temperature equalization, uneven ventilation can easily create dead zones near the warehouse walls. Especially in summer under direct sunlight, this can lead to a "cold core, hot skin" phenomenon, causing localized temperature increases on the grain pile's edges. This can result in insect and mold growth, moisture loss, borer infestation, nutrient loss, and other quality deterioration, ultimately reducing the quality of the stored grain.

[0003] When faced with localized temperature rise in grain piles, single-pipe fans are typically used for ventilation to cool down the localized hot spots. However, single-pipe fans require manual handling both above and below the storage area, as well as manual assembly on the grain surface. This process is time-consuming, labor-intensive, and inconvenient. Furthermore, single-pipe fans have relatively low power. If there are many impurities inside the grain pile at the hot spot, blocking the ventilation path, it is impossible to quickly cool down the localized hot spot, resulting in wasted power consumption. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a sidewall circulation temperature control system based on a gui-shaped ventilation duct to solve the problem of low ventilation efficiency when using a single-pipe fan for ventilation when local grain temperature rises on the sidewall of a grain pile.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a sidewall circulation temperature control system based on a U-shaped ventilation duct, comprising:

[0007] A ventilation duct, comprising a main air duct arranged in a first direction, a first branch air duct arranged in a second direction, and an L-shaped second branch air duct, both the first and second branch air ducts being connected to the main air duct; a ventilation mechanism connected to the second branch air duct; and a main valve arranged on the main air duct, the main valve being used to connect or disconnect the second branch air duct from the first air duct.

[0008] The second branch duct includes a first branch arranged along a first direction and a second branch arranged along a second direction, the first direction and the second direction being orthogonal; the main duct is connected to the second branch.

[0009] A preferred embodiment is that the second branch has a connection hole for connecting to a ventilation mechanism, which is connected to the connection hole via a connecting pipe.

[0010] In a preferred embodiment, the main valve is located between the first branch duct and the second branch, and the connection or disconnection between the second branch duct and the first branch duct is achieved by opening or closing the main valve.

[0011] A preferred embodiment is that the sidewall circulation temperature control system further includes a controller for controlling the opening and closing of the main valve and the start and stop of the ventilation mechanism.

[0012] A preferred embodiment is that the sidewall circulating temperature control system further includes a temperature sensor for measuring the temperature at the sidewall of the warehouse, and the temperature sensor is electrically connected to the controller.

[0013] A preferred embodiment is that the sidewall circulation temperature control system further includes a ventilation device for connecting to the main air duct, and the ventilation device is electrically connected to the controller.

[0014] The preferred solution is to open the main valve and stop the ventilation mechanism when overall ventilation is required in the warehouse, and start the ventilation equipment via the controller; and to close the main valve and stop the ventilation equipment via the controller when side-wall recirculation ventilation is required in the warehouse.

[0015] The preferred embodiment is that both the first and second branch air ducts are provided with several bridge-shaped holes.

[0016] A preferred embodiment is that the ventilation mechanism is a circulating fan.

[0017] The preferred embodiment is that the sidewall circulation temperature control system includes four sets of ventilation ducts; the second branch of each set of ventilation ducts corresponds to the corner of the warehouse.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention utilizes ventilation ducts, ventilation mechanisms, and main valves to create a ventilation path along the side walls of the warehouse. This ventilation path facilitates air mixing and heat exchange along the sides of the grain pile, achieving temperature control and ventilation during the side wall circulation process. This reduces the risk of localized heating on the sides of the grain pile, which can lead to mold, insect infestation, and cracking, thus improving grain quality and enhancing warehouse ventilation efficiency. Attached Figure Description

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Figure 1 This is one of the structural schematic diagrams of this utility model.

[0022] Figure 2This is the second structural schematic diagram of this utility model.

[0023] Figure 3 This is the third structural schematic diagram of this utility model. Detailed Implementation

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0025] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0026] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.

[0027] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0029] To address the issue of localized grain temperature rise on the grain pile sidewalls, existing single-tube fans require manual handling of grain both above and below the pile, as well as manual assembly on the grain surface. This is time-consuming, labor-intensive, and inconvenient. Furthermore, single-tube fans have limited power, and if the ventilation path is blocked due to impurities inside the grain pile at the heat point, rapid cooling of the localized heat point is impossible, leading to wasted power. This invention provides a sidewall circulation temperature control system based on a U-shaped ventilation duct, combined with… Figures 1 to 3As shown, the wall circulation temperature control system based on the U-shaped ventilation duct specifically includes: a ventilation duct for installation on the warehouse floor, the ventilation duct including a main air duct 11 arranged along a first direction, a plurality of first branch air ducts 12 arranged along a second direction, and an L-shaped second branch air duct, the first branch air ducts 12 and the second branch air ducts being connected to the main air duct 11, the first branch air ducts 12 being arranged along the first direction; a ventilation mechanism 2 connected to the second branch air duct; and a main valve 14 disposed on the main air duct 11, the main valve 14 being used to connect or disconnect the second branch air duct from the first branch air duct 12. The second branch air duct includes a first branch 131 arranged along the first direction and a second branch 132 arranged along the second direction, the first branch 131 and the second branch 132 being connected, the first direction and the second direction being orthogonal; the main air duct 11 is connected to the second branch 132. It is understood that the warehouse 5 has ventilation windows for connecting with the external environment. The first branch 131 and the second branch 132 of the second air duct are both 0.5-1m away from the side wall of warehouse 5. The main valve 14 is located 1m away from the side wall of warehouse 5 along the first direction of the main air duct 11 and is electrically connected to the controller 4. It should be noted that the X direction is the first direction, the Y direction is the second direction, and the Z direction is perpendicular to both the X and Y directions. Figure 1 This shows a top view of the sidewall recirculation temperature control system inside the warehouse. Figure 2 This shows a side view of the wall-mounted circulating temperature control system inside the warehouse. Figure 3 This shows a front view of the sidewall recirculation temperature control system inside the warehouse. Figure 2 and Figure 3 The dotted lines in the middle represent grain loading lines. Figure 2 and Figure 3 The arrows, excluding the directional arrows, represent the circulation ventilation paths. Before performing the sidewall circulation ventilation operation in warehouse 5, the grain surface of the grain pile in warehouse 5 must be covered with a covering film or airtight covering material, leaving a one-meter uncovered section around the grain pile from the warehouse sidewall. Cold air from the surface enters the grain pile from the uncovered part (i.e., the grain pile sidewall), passing through the grain pile along the shortest path principle, carrying away the heat from the grain layer near the sidewall and lowering the temperature of the grain layer near the sidewall. Hot air is drawn in through the second air duct and discharged into the warehouse space by ventilation mechanism 2, mixing and exchanging heat with the air in the warehouse space, thus completing the sidewall circulation process and achieving sidewall grain temperature control ventilation.

[0030] In one specific embodiment, a connection hole 133 for connecting to a ventilation mechanism 2 is formed on the second branch 132. The ventilation mechanism 2 is connected to the connection hole 133 via a connecting pipe 3 to achieve communication between the ventilation mechanism 2 and the second branch duct. Specifically, the connection hole 133 is provided on the second branch 132. The ventilation mechanism 2 can be a circulating fan, which has advantages such as high efficiency and energy saving, good ventilation effect, convenient installation and maintenance, and safety and reliability. The circulating fan can be placed inside or outside the warehouse. The lower end of the connecting pipe 3 is connected to the connection hole 133, and the upper end is connected to the circulating fan.

[0031] In one specific embodiment, the main valve 14 is located between the first branch air duct 12 and the second branch 132. By opening or closing the main valve 14, the second branch air duct and the first branch air duct 12 can be connected or disconnected, thereby enabling the switching between overall ventilation of the grain pile and ventilation near the side wall of the grain pile.

[0032] In one specific embodiment, the sidewall circulation temperature control system further includes a controller 4 for controlling the opening and closing of the main valve 14 and the start and stop of the ventilation mechanism 2. The main valve 14 and the ventilation mechanism 2 are both electrically connected to the controller 4. The controller 4 can be used to control the sidewall circulation ventilation inside the warehouse. The controller 4 can be placed outside the warehouse for easy access by operators.

[0033] Furthermore, the sidewall recirculation temperature control system also includes a temperature sensor for measuring the temperature at the sidewall of the warehouse 5, and the temperature sensor is electrically connected to the controller 4. Specifically, two temperature measuring cables are installed in each independent temperature control zone within the warehouse 5, and each temperature measuring cable has three temperature measuring points from top to bottom for monitoring the temperature of the sidewall area. An independent temperature measuring point is set outside the warehouse to monitor the outside atmospheric temperature. Each of the above temperature measuring points is equipped with a temperature sensor, which is connected to the controller 4 via a temperature measuring cable. Based on the temperature value of the temperature control zone measured by the temperature sensor, the opening and closing of the main valve 14 and the start and stop of the ventilation mechanism 2 are adjusted to achieve recirculation ventilation of the sidewall within the warehouse.

[0034] In one specific embodiment, the sidewall circulation temperature control system also includes a ventilation device for connecting to the main air duct 11. The ventilation device can be installed outside the warehouse 5. The ventilation device is electrically connected to the controller 4. By using the ventilation device in conjunction with the ventilation duct, the overall ventilation and heat dissipation of the grain pile in the warehouse can be achieved. That is, by opening the main valve 14 and turning on the ventilation device, the grain pile can be cooled by blowing air from bottom to top through the ventilation duct.

[0035] More specifically, when the warehouse 5 requires overall ventilation, the main valve 14 is opened by the controller 4, the ventilation mechanism 2 is stopped, and the ventilation equipment is started to ventilate and dissipate heat from bottom to top on the grain pile; when the warehouse 5 requires circulating ventilation near the side wall of the grain pile, the main valve 14 is closed by the controller 4, the ventilation equipment is stopped, the ventilation mechanism 2 is started, and the grain pile near the side wall is ventilated and dissipated through the second branch air duct.

[0036] In one specific embodiment, both the first branch air duct 12 and the second branch air duct are provided with a plurality of bridge-shaped holes. The size of the bridge-shaped holes is limited to prevent grain leakage, and the opening ratio is about 30%.

[0037] In one specific embodiment, the sidewall circulation temperature control system includes four sets of ventilation ducts, each set corresponding to a ventilation mechanism 2, a ventilation device, and a controller 4; the second branch of each set of ventilation ducts corresponds to the corner of the warehouse 5. Through this arrangement, the four sets of ventilation ducts divide the entire warehouse into four independent temperature control zones, with the second branch of each set corresponding to the sidewall areas of the warehouse's eaves and gable walls. This arrangement allows for targeted ventilation and heat dissipation of the grain in different areas, thereby reducing energy consumption.

[0038] During winter ventilation or summer temperature equalization, a temperature difference exists between the independent temperature-controlled area inside warehouse 5 and the outside atmosphere. By starting the circulating fan and opening the main valve 14, heat exchange is achieved between the side wall area, the grain surface space, and the outside atmosphere, thereby reducing the grain temperature on the side walls. During the circulating ventilation of the side walls inside the warehouse, the airtightness of the warehouse must ensure that the pressure drops from 500 Pa to 250 Pa within at least 2 minutes.

[0039] Specifically, when the temperature difference between the average temperature of the independent temperature-controlled zone inside warehouse 5 and the ambient temperature outside warehouse 5 is greater than or equal to 8℃, the main valve 14 is closed, and the circulating fan is turned on to perform circulating temperature control on the grain pile sidewalls. When the temperature difference between the average temperature of the independent temperature-controlled zone inside warehouse 5 and the ambient temperature outside warehouse 5 is greater than 4℃, circulating temperature control on the grain pile sidewalls continues. When the temperature difference between the average temperature of the independent temperature-controlled zone and the ambient temperature outside warehouse 5 is less than or equal to 4℃, the circulating fan is turned off, the main valve 14 is opened, and the circulating temperature control on the sidewalls ends.

[0040] In summary, this utility model, through the cooperation of ventilation ducts, ventilation mechanisms, and main valves, establishes a ventilation path along the side walls of the warehouse. This ventilation path enables air mixing and heat exchange along the side walls of the grain pile within the warehouse. During the side wall circulation process, temperature control and ventilation are achieved, reducing the risk of localized heating on the side walls of the grain pile leading to insects, mold, cracking, and other issues that could degrade grain quality, thus improving the ventilation efficiency of the grain warehouse.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A sidewall circulation temperature control system based on a U-shaped ventilation duct, characterized in that, include: A ventilation duct, comprising a main air duct arranged in a first direction, a first branch air duct arranged in a second direction, and an L-shaped second branch air duct, both the first and second branch air ducts being connected to the main air duct; a ventilation mechanism connected to the second branch air duct; and a main valve arranged on the main air duct, the main valve being used to connect or disconnect the second branch air duct from the first air duct. The second branch duct includes a first branch arranged along a first direction and a second branch arranged along a second direction, the first direction and the second direction being orthogonal; the main duct is connected to the second branch.

2. The wall circulation temperature control system based on a U-shaped ventilation duct according to claim 1, characterized in that, The second branch has a connection hole for connecting to a ventilation mechanism, which is connected to the connection hole via a connecting pipe.

3. The sidewall circulation temperature control system based on a U-shaped ventilation duct according to claim 1, characterized in that, The main valve is located between the first branch air duct and the second branch, and the connection or disconnection between the second branch air duct and the first branch air duct is realized by opening or closing the main valve.

4. The wall circulation temperature control system based on a U-shaped ventilation duct according to claim 1, characterized in that, The sidewall circulation temperature control system also includes a controller for controlling the opening and closing of the main valve and the start and stop of the ventilation mechanism.

5. The wall circulation temperature control system based on a U-shaped ventilation duct according to claim 4, characterized in that, The sidewall circulating temperature control system also includes a temperature sensor for measuring the temperature at the sidewall of the warehouse, and the temperature sensor is electrically connected to the controller.

6. The wall circulation temperature control system based on a U-shaped ventilation duct according to claim 4, characterized in that, The sidewall circulation temperature control system also includes ventilation equipment for connection to the main air duct, and the ventilation equipment is electrically connected to the controller.

7. The wall circulation temperature control system based on a U-shaped ventilation duct according to claim 6, characterized in that, When overall ventilation is required in the warehouse, the main valve is opened via the controller to stop the ventilation mechanism and start the ventilation equipment; when side-wall recirculation ventilation is required in the warehouse, the main valve is closed via the controller to stop the ventilation equipment and start the ventilation mechanism.

8. The wall circulation temperature control system based on a U-shaped ventilation duct according to claim 1, characterized in that, Both the first and second branch air ducts are equipped with several bridge-shaped holes.

9. The wall circulation temperature control system based on a U-shaped ventilation duct according to claim 1, characterized in that, The ventilation mechanism is a circulating fan.

10. The wall circulation temperature control system based on a U-shaped ventilation duct according to claim 1, characterized in that, The sidewall circulation temperature control system includes four sets of ventilation ducts; the second branch of each set of ventilation ducts corresponds to the corner of the warehouse.

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