A pallet with ventilation structure
By designing ventilation gaps at the pallet's load-bearing edges, the automatic air exchange between the inside and outside of the pallet is achieved using the chimney effect, solving the problem of uneven temperature and humidity during the transportation of high-precision components and realizing economical and environmentally friendly transportation without the need for desiccants.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BENGBU GUOXIAN TECH CO LTD
- Filing Date
- 2026-03-10
- Publication Date
- 2026-06-05
AI Technical Summary
In the storage and transportation of high-precision optical and electronic components, the temperature and humidity imbalance caused by the closed environment leads to condensation, material moisture absorption and deformation, and mold growth. Existing solutions are costly, environmentally unfriendly, or have poor ventilation.
Design a tray with a ventilated structure. By setting ventilation gaps with height differences at the bearing edges, the automatic air exchange between the cavity and the external environment is achieved by utilizing the chimney effect of rising hot air. Combined with an irregular stepped design, dust and large particles are blocked, achieving temperature and humidity balance.
It effectively prevents condensation, reduces transportation costs, avoids mechanical damage and dust pollution, and achieves automatic temperature and humidity balance. No additional desiccant is required, making it environmentally friendly and economical.
Smart Images
Figure CN122144291A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of packaging materials technology, and in particular to a tray with a ventilated structure. Background Technology
[0002] In the consumer electronics, automotive electronics, and high-end display industries, high-precision optical and electronic components typically require pallet support and protection during storage and transportation after production and before assembly. To reduce volume, these pallets are often stacked from top to bottom during transport, easily creating a sealed environment within the two stacked pallets. Since these components are extremely sensitive to temperature and humidity, changes in ambient temperature can cause condensation (condensation) inside the sealed packaging, or excessive humidity can lead to material moisture absorption and deformation, mold growth, and ultimately, functional damage or aesthetic defects to the components.
[0003] Traditional solutions mainly include: 1. Adding desiccant: Placing desiccant bags such as silica gel inside the packaging, which need to be replaced regularly, is costly and not environmentally friendly. 2. Sealing with anti-static bags: While this can prevent dust, it exacerbates the imbalance between internal temperature and humidity and the external environment. 3. Creating simple openings in the tray: Although this provides some ventilation, air relies solely on natural diffusion, resulting in poor convection and an inability to form an effective air circulation path within the tray. This leads to slow temperature and humidity equalization; it also fails to prevent condensation buildup, as condensate easily accumulates at the edges of the openings or at the bottom of the tray, potentially coming into direct contact with or dripping onto precision components. Furthermore, these openings can introduce dust or cause mechanical damage. Summary of the Invention
[0004] To address the technical problems existing in the background art, the present invention proposes a tray with a ventilation structure.
[0005] The present invention proposes a pallet with a ventilated structure, comprising a pallet body having at least one cavity for containing items and a bearing edge surrounding the cavity. The bearing edge has a first support unit and a second support unit arranged adjacent to each other. When N pallet bodies are stacked vertically, the first support unit of the Mth pallet body abuts against the first support unit of the (M+1)th pallet body, so that the Mth pallet body is supported and confined above the (M+1)th pallet body. The second support unit of the Mth pallet body and the second support unit of the (M+1)th pallet body form a height difference in the vertical direction, thereby constituting at least one ventilation gap connecting the cavity with the external environment, wherein N≥2, M≥1, and N and M are both natural numbers.
[0006] Preferably, the ventilation gap is divided into a first segment, a second segment, and a third segment connected in sequence according to the direction of fluid flow during air intake. The first end is connected to the external environment, the first segment extends upward and connects to the second segment, the third segment connects to the second segment and extends downward from the second segment, and the third segment is connected to the cavity.
[0007] Preferably, the second support unit has a first segment and a second segment in its extending direction. When stacked, the first segments of the two second support units form a first opening connecting the first segment with the external environment, and the second segments of the two second support units form a second opening connecting the second segment with the cavity.
[0008] Preferably, the first and third cross sections are irregularly stepped.
[0009] Preferably, the height of the first opening is higher than the height of the second opening.
[0010] Preferably, both the first and third segments have continuously inclined inner walls, and the first and third segments are inclined towards each other relative to the vertical direction. The second segment is horizontally positioned, which makes the ventilation gap inverted U-shape. The connection between the second segment and the first and third segments is bent, which can block dust and large particles of foreign matter from passing through.
[0011] Preferably, the height of the first opening is equal to the height of the second opening.
[0012] Preferably, when the number of cavities is set to at least two, the bearing edge also has a third support unit. The third support unit is located between any two adjacent cavities. When N pallet bodies are stacked vertically, the third support unit of the Mth pallet body and the third support unit of the M+1th pallet body form a height difference in the vertical direction, thereby constituting at least one channel connecting two cavities. The channel is divided into a fourth segment, a fifth segment, and a sixth segment connected sequentially from left to right. The entrance of the fourth segment is connected to one cavity, the fourth segment extends upward and connects to the fifth segment, and the sixth segment extends downward from the fifth segment and connects to another cavity.
[0013] Preferably, the upper surface of the first support unit is provided with a protrusion, and the lower surface of the first support unit is provided with a recess. When the abutment is specifically in the case of stacking, the protrusion of the first support unit of the (M+1)th pallet body is at least partially accommodated in the recess of the first support unit of the Mth pallet body.
[0014] Preferably, the recessed portion has at least one first vertical positioning surface and at least one first horizontal supporting surface, and the protruding portion has at least one second vertical positioning surface and at least one second horizontal supporting surface. When stacked, the second vertical positioning surface of the Mth pallet body engages with the first vertical positioning surface of the M+1th pallet body; the second horizontal supporting surface of the Mth pallet body overlaps the first horizontal supporting surface of the M+1th pallet body.
[0015] In this invention, ventilation gaps with varying heights are provided on the bearing edge of the tray body, connecting the cavity of the tray body to the external environment. The first and third sections of these ventilation gaps utilize the chimney effect of rising hot air to automatically exchange air between the cavity and the external environment, thus equalizing the temperature and humidity differences between the two environments and allowing condensation to occur when the tray is placed inside. Simultaneously, the second section of the ventilation gap is bent at its connection to the first and third sections, allowing airflow while blocking dust and large particles. The irregularly stepped first and third sections also further prevent dust and large particles from contaminating the internal environment of the cavity and preventing mechanical damage to items within the cavity. Furthermore, the ventilation gaps used for equalizing temperature and humidity differences are integrally molded with the tray body, eliminating the need for additional desiccants and reducing packaging costs for items such as optical and electronic components. Attached Figure Description
[0016] Figure 1 This is a schematic diagram showing an item placed within the invention. Figure 2 Exploded view of the article, the padding layer, and the present invention; Figure 3 This is a schematic diagram of the overall structure of the tray with ventilation structure proposed in this invention; Figure 4 This is a schematic diagram of the ventilation gap and channel of the tray with ventilation structure proposed in this invention; Figure 5 This is a schematic diagram of the first support unit of the tray with a ventilation structure proposed in this invention; Figure 6 This is a cross-sectional view of the first support unit of the tray with a ventilation structure proposed in this invention. Detailed Implementation
[0017] Reference Figure 1This invention proposes a ventilated pallet, comprising a pallet body 1, which has at least one cavity 11 for accommodating items 2 and a support edge 12 surrounding the cavity 11. The items 2 are primarily optoelectronic components requiring support and protection during transportation. During transport, a padding layer 3 is placed between the items 2 and the pallet body 1. This padding layer 3 is typically made of soft foam sheet to cushion impacts. The stacked pallet bodies 1 are also covered with an anti-static or vacuum-sealed aluminum foil bag to isolate them from the external environment and minimize the impact of external temperature and humidity changes on the internal items 2. When there is only one cavity 11, the support edge 12 includes a first support unit 41 and a second support unit 42 arranged adjacent to each other. When there are at least two cavities 11, the support edge 12 further includes a third support unit 43 located between any two adjacent cavities 11.
[0018] When N pallet bodies 1 are stacked vertically, the first support unit 41 mainly serves to support and position the pallets between layers. Specifically, the first support unit 41 of the Mth pallet body 1 abuts against the first support unit 41 of the (M+1)th pallet body 1, supporting and confining the Mth pallet body 1 above it (where N≥2, M≥1, and N and M are natural numbers). The specific structure is as follows: Figure 4 , Figure 5 and Figure 6 As shown: The upper surface of the first support unit 41 is provided with a protrusion 411, and the lower surface of the first support unit 41 is provided with a recess 412. By providing the protrusion 411 and the recess 412, when stacked, the protrusion 411 of the first support unit 41 of the (M+1)th pallet body 1 is at least partially accommodated in the recess 412 of the first support unit 41 of the Mth pallet body 1, thereby achieving the function of insertion and limiting.
[0019] It is worth noting that the first support unit 41 in this invention has different forms. However, the recess 412 of each first support unit 41 has at least one first vertical positioning surface 4111 and at least one first horizontal support surface 4112, and the protrusion 411 of each first support unit 41 also has at least one second vertical positioning surface 4121 and at least one second horizontal support surface 4122. Figure 4 and Figure 5When the first support unit 41 shown in the figure is stacked, the second vertical positioning surface 4121 of the upper Mth pallet body 1 will engage with the first vertical positioning surface 4111 of the lower M+1th pallet body 1. At this time, part of the protrusion 411 of the first support unit 41 of the M+1th pallet body 1 will be inserted into the recess 412 of the first support unit 41 of the Mth pallet body 1, so as to support and limit the upper Mth pallet body 1. Figure 6 When the first support unit 41 shown in the figure is stacked, the second horizontal support surface 4122 of the upper Mth pallet body 1 will overlap the first horizontal support surface 4112 of the lower M+1th pallet body 1, so that the lower M+1th pallet body 1 can support the upper Mth pallet body 1.
[0020] The second support unit 42 can connect the external environment during the stacking process. Specifically, the second support unit 42 of the Mth pallet body 1 and the second support unit 42 of the M+1th pallet body 1 form a height difference in the vertical direction, thereby creating at least one ventilation gap 5 connecting the cavity 11 to the external environment. Figure 4 and Figure 5 As shown, the ventilation gap 5 is divided into a first segment 51, a second segment 52, and a third segment 53 connected sequentially according to the fluid flow direction during air intake. The first end is connected to the external environment. The first segment 51 extends upward and connects to the second segment 52. The third segment 53 connects to the second segment 52 and extends downward from the second segment 52. The third segment 53 is connected to the cavity 11. Moreover, the second support unit 42 has a first segment 421 and a second segment 422 in its extension direction. When stacked, the first segments 421 of the two second support units 42 form a first opening connecting the first segment 51 to the external environment, and the second segments 422 of the two second support units 42 form a second opening connecting the second segment 52 to the cavity 11.
[0021] The aforementioned second support unit 42 can balance the temperature and humidity difference between the inside and outside of the tray when the external ambient temperature changes and a temperature difference arises between the air inside the tray and the outside. Taking an increase in external ambient temperature as an example: When the external ambient temperature rises, heat is conducted through the packaging bag wall and the tray body 1 to the ventilation gap 5, thereby heating the air located in the ventilation gap 5. At this time, the air in the ventilation gap 5 expands due to heat and its density decreases. Since the first section 51 and the third section 53 of the ventilation gap 5 in this invention have a height difference, the heated air will form an upward airflow. According to the chimney effect, this portion of hot air will pass through the second section 52 along the third section 53 of the ventilation gap 5 and enter the first section 51, and then flow through the first opening into the space inside the packaging bag outside the tray body 1. Meanwhile, the air temperature inside the cavity 11 of the tray body 1 and around the items 2 located within the cavity 11 is relatively low and the density is relatively high. The air pressure in this area is greater than the air pressure in the ventilation gap 5, thus creating a pressure difference at the ventilation gap 5. This pressure difference drives the cold air inside the cavity 11 to enter the ventilation gap 5 through the second opening to replenish the hot air discharged from the ventilation gap 5. After entering the ventilation gap 5, this cold air is also heated by the increase in ambient temperature, and then the above process is repeated, forming an airflow between the packaging bag and the ventilation gap 5. This accelerates the transfer of heat from the inside of the tray body 1 to the interior space of the packaging bag, reducing the temperature and humidity difference between the surface of the items 2 inside the tray body 1 and the air, thereby preventing condensation due to the surface temperature of the items 2 being lower than the dew point temperature of the air inside the bag.
[0022] When the external ambient temperature decreases, the flow of gas in the ventilation gap 5 is the opposite of the above process: when cooling down, the air temperature in the ventilation gap 5 will first cool and contract under the conduction of the packaging bag wall, and the density will increase. Then the cold air sinks and enters the cavity 11 of the tray body 1 through the second opening to gradually reduce the temperature around the product. Moreover, as the air in the ventilation gap 5 is drawn into the cavity 11, a pressure difference will also be formed between the packaging bag and the ventilation gap 5. Under the action of the pressure difference, the air in the packaging bag will be drawn into the ventilation gap 5 through the first opening, and then cooled again under the conduction of the packaging bag wall and drawn into the cavity 11 again, thereby continuously reducing the temperature around the item 2 to balance the air temperature around the item 2 and the air temperature inside the packaging bag.
[0023] The above process is passive and continuous, allowing the internal temperature and humidity of the pallet body 1 to slowly reach equilibrium with the external environment, preventing the formation of severe condensation points inside. Relying entirely on physical principles, it requires no desiccants, no energy, and no maintenance, significantly reducing material costs and environmental pressures for long-term storage.
[0024] In this embodiment, the second support unit 42 can take various forms, the first form being as follows: Figure 3As shown, the first section 51 and the third section 53 of the ventilation gap 5 formed by the second support unit 42 are irregularly stepped, and the height of the first opening is higher than the height of the second opening. By using the irregular steps, the kinetic energy of dust or large particles can be dissipated at the bends within the ventilation gap 5, allowing them to separate from the airflow, thus achieving dust removal while ensuring ventilation. A second form of the second support unit 42 is shown below. Figure 4 As shown, the ventilation gap 5 formed by the second support unit 42 has continuous inclined inner walls in both the first section 51 and the third section 53, and the first section 51 and the third section 53 are inclined towards each other relative to the vertical direction, while the second section 52 is horizontally arranged, and the height of the first opening is equal to the height of the second opening. This type of ventilation gap 5 also has bends, which can also achieve the effect of dust removal.
[0025] The third support unit 43 is used to connect two adjacent cavities 11. The arrangement of the two cavities 11 can directly increase the number of items 2 that can be transported sequentially, thereby improving the transportation efficiency. The specific structure of the third support unit 43 is as follows: Figure 3 The third support unit 43 of the Mth pallet body 1 and the third support unit 43 of the M+1th pallet body 1 form a height difference in the vertical direction, thereby constituting at least one channel 6 connecting two cavities 11. The channel 6 is divided into a fourth segment 61, a fifth segment 62 and a sixth segment 63 connected sequentially from left to right. The entrance of the fourth segment 61 is connected to one cavity 11. The fourth segment 61 extends upward to connect with the fifth segment 62. The sixth segment 63 extends downward from the fifth segment 62 and connects with the other cavity 11. The fourth segment 61 and the sixth segment 63 also have a height difference in the stacking direction. Therefore, like the second support unit 42, when the ambient temperature changes, the air temperature in the channel 6 will change first due to the conduction between the packaging bag wall and the pallet body 1. At the same time, air will continuously enter or exit the two cavities 11. When there is a pressure difference between the two cavities 11, the air in the channel 6 will flow to the cavity 11 with lower pressure to balance the pressure between the two cavities 11. The heat or cold carried by the air can also balance the temperature and humidity in the two cavities 11, thereby helping to ensure the uniformity of temperature and humidity in the entire pallet body 1.
[0026] In addition, the pallet body 1 in this invention is integrally formed from engineering plastics (such as PET, PS, PP, etc.) using a vacuum forming process. The second support unit 42 and the third support unit 43 used for ventilation are integrally formed during the processing of the pallet body 1. This design not only does not weaken the overall strength, but may also play the role of reinforcing ribs, improving the pallet's resistance to pressure and deformation, achieving two goals at once.
[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A tray with a ventilated structure, characterized in that, The pallet includes a pallet body having at least one cavity for containing items and a support edge surrounding the cavity. The support edge has a first support unit and a second support unit arranged adjacent to each other. When N pallet bodies are stacked vertically, the first support unit of the Mth pallet body abuts against the first support unit of the (M+1)th pallet body, causing the Mth pallet body to be supported and confined above the (M+1)th pallet body. The second support unit of the Mth pallet body and the second support unit of the (M+1)th pallet body form a height difference in the vertical direction, thereby constituting at least one ventilation gap connecting the cavity to the external environment, where N≥2, M≥1, and N and M are both natural numbers.
2. The tray with a ventilated structure according to claim 1, characterized in that, The ventilation gap is divided into a first section, a second section, and a third section in sequence according to the direction of fluid flow during air intake. The first end is connected to the external environment, the first section extends upward and connects to the second section, the third section connects to the second section and extends downward from the second section, and the third section connects to the cavity.
3. The tray with a ventilated structure according to claim 2, characterized in that, The second support unit has a first section and a second section in its extending direction. When stacked, the first sections of the two second support units form a first opening connecting the first section with the external environment, and the second sections of the two second support units form a second opening connecting the second section with the cavity.
4. The tray with a ventilated structure according to claim 3, characterized in that, The first and third cross sections are irregularly stepped.
5. The tray with a ventilated structure according to claim 4, characterized in that, The height of the first opening is higher than the height of the second opening.
6. The tray with a ventilated structure according to claim 3, characterized in that, Both the first and third segments have continuous inclined inner walls, and the first and third segments are inclined towards each other relative to the vertical direction, while the second segment is horizontally positioned.
7. The tray with a ventilated structure according to claim 6, characterized in that, The height of the first opening is equal to the height of the second opening.
8. The tray with a ventilated structure according to claim 1, characterized in that, When the number of cavities is set to at least two, the bearing edge also has a third support unit. The third support unit is located between any two adjacent cavities. When N pallet bodies are stacked vertically, the third support unit of the Mth pallet body and the third support unit of the M+1th pallet body form a height difference in the vertical direction, thereby constituting at least one channel connecting two cavities. The channel is divided into a fourth segment, a fifth segment, and a sixth segment connected sequentially from left to right. The entrance of the fourth segment is connected to one cavity, the fourth segment extends upward and connects to the fifth segment, and the sixth segment extends downward from the fifth segment and connects to another cavity.
9. The tray with a ventilated structure according to claim 1, characterized in that, The first support unit has a protrusion on its upper surface and a recess on its lower surface. When the abutment is specifically in the case of stacking, the protrusion of the first support unit of the (M+1)th pallet body is at least partially accommodated in the recess of the first support unit of the Mth pallet body.
10. The tray with a ventilated structure according to claim 9, characterized in that, The recessed portion has at least one first vertical positioning surface and at least one first horizontal supporting surface, and the protruding portion has at least one second vertical positioning surface and at least one second horizontal supporting surface. When stacked, the second vertical positioning surface of the Mth pallet body engages with the first vertical positioning surface of the M+1th pallet body; the second horizontal supporting surface of the Mth pallet body overlaps the first horizontal supporting surface of the M+1th pallet body.