Colored sand heat storage constant-temperature box
By combining the design of a vacuum cavity insulation layer, an inclined composite substrate, and a heating mechanism, the problem of rapid heat loss in traditional colored sand heat storage constant temperature boxes is solved, achieving a highly efficient and energy-saving colored sand heat storage effect, extending the constant temperature time, and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-03-17
AI Technical Summary
The traditional colored sand heat storage constant temperature box has insufficient insulation structure design, which causes the heat stored in the colored sand to be lost rapidly in a short period of time, reducing the efficiency of the heat storage system and increasing energy consumption.
The design incorporates a combination of a vacuum chamber insulation layer, an inclined composite substrate, a partition plate, and a heating mechanism. The vacuum chamber insulation layer blocks external heat exchange, the inclined composite substrate promotes automatic filling and layering of colored sand, the partition plate reduces heat transfer interference, and the heating mechanism ensures temperature stability through hot air circulation and PTC ceramic heating elements.
It significantly extends the constant temperature time, reduces heat loss and the need for frequent heating, saves energy and reduces consumption by 30%-50%, reduces carbon emissions, and improves insulation performance and loading efficiency.
Smart Images
Figure CN224000232U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of colored sand equipment technology, and in particular to a colored sand heat storage constant temperature box. Background Technology
[0002] Colored sand, as a special solid material, has shown great application potential in the field of thermal energy storage in recent years. Colored sand possesses high heat capacity and thermal stability, enabling it to effectively store and release heat energy. With the global emphasis on renewable energy and energy conservation and emission reduction, colored sand thermal storage technology, as a highly efficient and environmentally friendly energy storage method, has gradually gained widespread attention. Especially in fields such as solar thermal power generation, industrial waste heat recovery, and building heating, colored sand thermal storage technology has demonstrated unique advantages. By heating colored sand to a high temperature and storing it in a specially designed container, the stored heat energy can be released through heat exchange when needed for power generation, heating, or other heat energy demand scenarios.
[0003] In the research and development of colored sand heat storage constant temperature box, the insulation structure design of the traditional constant temperature box is insufficient, which causes the heat stored in the colored sand to be lost rapidly in a short period of time. This rapid heat loss not only reduces the overall efficiency of the heat storage system, but also increases the need for frequent heating, further aggravating energy consumption. Therefore, it needs to be improved. Utility Model Content
[0004] To address the problem of rapid heat loss in traditional constant temperature chambers, this application provides a colored sand heat storage constant temperature chamber.
[0005] The colored sand heat storage constant temperature box provided in this application adopts the following technical solution:
[0006] A colored sand heat storage constant temperature box includes a box body, a vacuum cavity heat insulation layer is provided on the box body, a composite substrate is inclinedly arranged inside the box body, a plurality of partition plates are arranged at intervals on the composite substrate, a colored sand storage area is formed between adjacent partition plates, and a heating mechanism for constant temperature heating is provided below the composite substrate.
[0007] Due to the deficiencies in the insulation structure design of traditional constant temperature boxes, the heat stored in colored sand is rapidly dissipated in a short period of time. This rapid heat loss not only reduces the overall efficiency of the heat storage system but also increases the need for frequent heating, further aggravating energy consumption. By adopting the above-mentioned technical solution, including the box body, the vacuum cavity insulation layer is formed on the box body, the composite substrate is installed at an angle inside the box body, several partitions form the colored sand storage area, and the heating mechanism is installed below the composite substrate.
[0008] When storing colored sand, the sand is poured in through the box inlet and flows naturally along the inclined composite substrate to each colored sand storage area. The partition plates (10-20cm apart) divide the box into independent storage units, reducing heat transfer interference between colored sands. The colored sand absorbs and stores heat through its own high specific heat capacity or phase change characteristics. The vacuum cavity insulation layer on the box is evacuated by a vacuum pump or pre-sealed vacuum structure to block external heat exchange. After the colored sand is loaded, the system detects the temperature of each zone through temperature sensors to ensure that the colored sand is in a heat storage state. If the temperature is insufficient, the heating mechanism is activated to supplement heating until the maintenance temperature is stable.
[0009] By incorporating a vacuum chamber insulation layer, composite substrate, and heating mechanism, the vacuum chamber insulation layer significantly reduces heat loss, extending the constant temperature time to more than twice that of traditional equipment. It boasts excellent heat preservation performance, reducing the need for frequent heating and minimizing heat loss. Simultaneously, it significantly saves energy and reduces consumption. The intermittent heating mode reduces energy consumption by 30%-50%, lowering operating costs and carbon emissions, aligning with the green energy-saving trend.
[0010] Optionally, a door is provided on one side of the enclosure, and the composite substrate is arranged at an angle from the door side of the enclosure toward the opposite side, with the angle of inclination of the composite substrate ranging from 15 to 30°.
[0011] By adopting the above technical solution, the tilt angle of the composite substrate is in the range of 15-30°. By setting the tilt angle of the composite substrate, the colored sand can automatically fill each storage area, reduce manual intervention, and improve loading efficiency by more than 30%. At the same time, the tilted composite substrate and the partition plate work together to reduce dead corners of material accumulation and improve space utilization. In addition, the colored sand naturally stratifies during the flow process, and the gaps between particles are uniform, reducing heat transfer resistance and avoiding local overheating or overcooling.
[0012] Optionally, the bottom of the composite substrate is provided with a plurality of reinforcing ribs, which are arranged sequentially at intervals below the composite substrate, with a spacing of 50-100mm between adjacent reinforcing ribs.
[0013] By adopting the above technical solution, several reinforcing ribs are welded at intervals below the composite substrate. By setting the reinforcing ribs, the reinforcing ribs distribute the force on the composite substrate to multiple support points, reduce local stress concentration, and avoid extending the service life of the composite substrate due to deformation. At the same time, the spaced reinforcing ribs reduce the direct contact area between the metal material and the substrate, and reduce the thermal bridge effect.
[0014] Optionally, the heating mechanism includes a hot air centrifugal fan and a hot air duct. The hot air centrifugal fan is arranged below the composite substrate. The hot air source of the hot air centrifugal fan corresponds to the air inlet of the hot air duct, and the air outlet of the hot air duct is arranged towards the composite substrate.
[0015] By adopting the above technical solution, the heating mechanism includes a hot air centrifugal fan and a hot air duct; through the setting of the hot air centrifugal fan and the hot air duct, the high air volume output of the hot air centrifugal fan is combined with the directional airflow of the hot air duct, so that the hot air can quickly cover the surface of the substrate, shorten the heating time, reduce heat transfer loss, and improve heating efficiency.
[0016] Optionally, a PTC ceramic heating element for heating is also provided below the composite substrate, and the PTC ceramic heating element is arranged inside the housing.
[0017] By adopting the above technical solution, the PTC ceramic heating element is installed below the composite substrate. With the setting of the PTC ceramic heating element, the PTC ceramic heating element serves as a backup heat source for the colored sand energy storage constant temperature box. It has automatic constant temperature characteristics. When the main heat source fails or the ambient temperature drops suddenly, its resistance automatically adjusts the power output as the temperature rises, ensuring that the temperature inside the box is stable within the set range, avoiding overheating or temperature fluctuations, and improving the reliability and safety of the system.
[0018] Optionally, each of the partition plates is provided with a plurality of fence holes, and the plurality of fence holes are arranged sequentially at intervals on the partition plate.
[0019] By adopting the above technical solution, several grille holes are opened on the partition plate. The grille holes balance the internal thermal environment of the cabinet. As a connecting structure on the partition plate, the grille holes can promote heat exchange between adjacent storage areas, reduce temperature gradient, and make the heat distribution inside the cabinet more uniform. At the same time, the porous structure provides a channel for air flow, enhances the natural convection inside the cabinet, assists the diffusion of hot air, and avoids local overheating or moisture accumulation.
[0020] Optionally, guide rail connectors are provided on both sides of any of the partition plates, and guide rail grooves for partition plate installation are provided on the inner wall of the box. The number of guide rail connectors is the same as the number of guide rail grooves, and each guide rail connector corresponds to a single guide rail groove.
[0021] By adopting the above technical solution, the partition plate is installed in the guide rail groove on the inner wall of the box via guide rail connectors. The installation is convenient due to the design of the guide rail connectors and guide rail grooves. The one-to-one correspondence between the guide rail connectors and guide rail grooves allows the partition plate to be quickly positioned by straight insertion without additional calibration. Installation can be completed by a single person, improving assembly efficiency. At the same time, maintenance is convenient, as it can be pulled out along the direction of the guide rail connectors without disassembling other parts of the box, reducing maintenance difficulty and time costs.
[0022] Optionally, a positioning tenon is provided at the bottom of any of the partition plates, and a positioning groove is provided on the composite substrate for the positioning tenon to engage.
[0023] By adopting the above technical solution, the partition plate is matched with the positioning tenon and the positioning groove of the composite substrate through the positioning tenon; the setting of the positioning tenon and the positioning groove ensures that the installation positioning between the partition plate and the composite substrate is reliable. At the same time, the design of the positioning tenon extending into the positioning groove can withstand the vertical gravity of the partition plate and colored sand, avoiding the partition plate from sinking or tilting due to long-term pressure, and extending its service life.
[0024] In summary, this application includes at least one of the following beneficial technical effects:
[0025] 1. By using a vacuum chamber insulation layer, composite substrate, heating mechanism, etc., the vacuum chamber insulation layer significantly reduces heat loss and extends the constant temperature time to more than twice that of traditional equipment. It has excellent heat preservation performance, reduces the need for frequent heating, reduces heat loss, and significantly saves energy. The intermittent heating mode reduces energy consumption by 30%-50%, reducing operating costs and carbon emissions, which is in line with the green energy-saving trend.
[0026] 2. By setting the tilt angle of the composite substrate, colored sand can automatically fill each storage area, reducing manual intervention and improving loading efficiency by more than 30%. At the same time, the tilted composite substrate and the partition plate work together to reduce dead corners of material accumulation and improve space utilization. Furthermore, the colored sand naturally stratifies during the flow process, with uniform gaps between particles, reducing heat transfer resistance and avoiding local overheating or overcooling.
[0027] 3. By setting up a hot air centrifugal fan and a hot air duct, the high air volume output of the hot air centrifugal fan is combined with the directional airflow of the hot air duct, so that the hot air can quickly cover the surface of the substrate, shorten the heating time, reduce heat transfer loss, and improve heating efficiency. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the structure of a colored sand heat storage constant temperature box in an embodiment of this application.
[0029] Figure 2 This is a cross-sectional view used to illustrate the colored sand storage area in the embodiments of this application.
[0030] Figure 3 yes Figure 2 Enlarged view of part A in the image.
[0031] Figure 4 This is a cross-sectional view used in the embodiments of this application to illustrate the tilt angle of the composite substrate.
[0032] Explanation of reference numerals in the attached drawings: 1. Box body; 2. Vacuum cavity insulation layer; 3. Composite substrate; 4. Divider plate; 5. Colored sand storage area; 6. Heating mechanism; 61. Hot air centrifugal fan; 62. Hot air duct; 7. Box door; 8. Reinforcing rib; 9. PTC ceramic heating element; 10. Fence hole; 11. Guide rail connector; 12. Guide rail groove; 13. Positioning tenon; 14. Positioning mortise. Detailed Implementation
[0033] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.
[0034] This application discloses a colored sand heat storage constant temperature box. (Refer to...) Figure 1 and Figure 2 The colored sand heat storage constant temperature box includes a box body 1. A box door 7 is installed on one side of the box body 1. Colored sand is poured into the box body 1 through the box door 7. In this embodiment, the box body 1 has a hollow structure inside. A vacuum cavity insulation layer 2 is integrally formed inside the box body 1. The vacuum cavity insulation layer 2 is blocked from external heat exchange by vacuum pumping or pre-sealing a vacuum structure.
[0035] Reference Figure 2 and Figure 4 The composite substrate 3 is installed at an angle inside the box 1. In this embodiment, the composite substrate 3 is arranged at an angle from one side of the box door 7 of the box 1 to the opposite side. The angle of inclination of the composite substrate 3 is 15-30°, which enables the colored sand to automatically fill each storage area, reduce manual intervention, and improve loading efficiency by more than 30%. At the same time, the inclined composite substrate 3 cooperates with the partition plate 4 to reduce material accumulation dead corners and improve space utilization. In addition, the colored sand naturally stratifies during the flow process, and the gaps between particles are uniform, reducing heat transfer resistance and avoiding local overheating or overcooling.
[0036] Reference Figure 2 and Figure 4 A number of reinforcing ribs 8 are welded and fixed to the bottom of the composite substrate 3. The reinforcing ribs 8 are arranged in sequence at intervals below the composite substrate 3. In this embodiment, the spacing between adjacent reinforcing ribs 8 is 50-100mm. The reinforcing ribs 8 distribute the force on the composite substrate 3 to multiple support points, reduce local stress concentration, and avoid extending the service life of the composite substrate 3 due to deformation. At the same time, the spaced reinforcing ribs 8 reduce the direct contact area between the metal material and the substrate, and reduce the thermal bridge effect.
[0037] Reference Figure 2 and Figure 4A plurality of partition plates 4 are installed on the top of the composite substrate 3. The partition plates 4 are arranged sequentially and at intervals on the composite substrate 3. A colored sand storage area 5 is formed between adjacent partition plates 4. At the same time, a plurality of grid holes 10 are opened through each partition plate 4. The grid holes 10 are arranged sequentially and at intervals on the partition plates 4 to balance the internal thermal environment of the box 1. The grid holes 10, as the connecting structure on the partition plates 4, can promote heat exchange between adjacent storage areas, reduce temperature gradient, and make the heat distribution inside the box 1 more uniform. At the same time, the porous structure provides a channel for air flow, enhances the natural convection inside the box 1, assists the diffusion of hot air, and avoids local overheating or moisture accumulation.
[0038] Reference Figure 3 Each partition plate 4 has a guide rail connector 11 welded and fixed on both sides. A guide rail groove 12 is provided on the inner wall of the box body 1. In this embodiment, the number of guide rail connectors 11 and guide rail grooves 12 is the same, with one guide rail connector 11 corresponding to one guide rail groove 12. The partition plate 4 is installed in the guide rail groove 12 of the box body 1 through the guide rail connector 11. This improves the ease of installation. The one-to-one correspondence design between the guide rail connector 11 and the guide rail groove 12 allows the partition plate 4 to be quickly positioned by straight insertion without additional calibration. Installation can be completed by a single person, improving assembly efficiency. At the same time, maintenance is convenient. It can be pulled out along the direction of the guide rail connector 11 without disassembling other parts of the box body 1, reducing maintenance difficulty and time cost.
[0039] Reference Figure 3 Meanwhile, each partition plate 4 has an integrally formed positioning tenon 13 at its bottom, and the composite substrate 3 has several positioning grooves 14. The positioning tenon 13 is inserted and fixed in the corresponding positioning groove 14. This ensures reliable installation and positioning between the partition plate 4 and the composite substrate 3. At the same time, the design of the positioning tenon 13 extending into the positioning groove 14 can withstand the vertical gravity of the partition plate 4 and the colored sand, preventing the partition plate 4 from sinking or tilting due to long-term pressure, and extending its service life.
[0040] Reference Figure 4A heating mechanism 6 is installed below the composite substrate 3. In this embodiment, the heating mechanism 6 is used to maintain a constant temperature inside the housing 1. At the same time, a temperature sensor is equipped inside the housing 1. The heating mechanism 6 includes a hot air centrifugal fan 61 and a hot air duct 62. The hot air centrifugal fan 61 is arranged below the composite substrate 3. The hot air source of the hot air centrifugal fan 61 corresponds to the air inlet of the hot air duct 62. The air outlet of the hot air duct 62 is arranged towards the composite substrate 3. In this embodiment, the composite substrate 3 is stably installed inside the housing 1 and is designed with a dedicated airflow channel (or notch). This notch allows the air below the composite substrate 3 to flow smoothly to the top of it, thereby forming an effective hot air circulation. The high air volume output of the hot air centrifugal fan 61 combined with the directional airflow of the hot air duct 62 allows the hot air to quickly cover the surface of the substrate, shorten the heating time, reduce heat transfer loss, and improve heating efficiency.
[0041] Reference Figure 4 Meanwhile, a PTC ceramic heating element 9 is installed below the composite substrate 3. The PTC ceramic heating element 9 is equipped with a corresponding power supply. As a backup heat source for the colored sand energy storage constant temperature box, the PTC ceramic heating element 9 has automatic constant temperature characteristics. When the main heat source fails or the ambient temperature drops suddenly, its resistance increases with the temperature and automatically adjusts the power output to ensure that the temperature inside the box is stable within the set range, avoid overheating or temperature fluctuations, and improve the reliability and safety of the system.
[0042] The implementation principle of the colored sand heat storage constant temperature box in this application embodiment is as follows: When storing colored sand, the colored sand is poured in through the material port of the box 1 and flows naturally along the inclined composite substrate 3 to each colored sand storage area 5. The partition plate 4 (spacing 10-20cm) divides the box 1 into independent storage units to reduce heat transfer interference between colored sand. The colored sand absorbs and stores heat through its own high specific heat capacity or phase change characteristics. The vacuum cavity insulation layer 2 on the box 1 is degassed by a vacuum pump or pre-sealed with a vacuum structure to block external heat exchange. After the colored sand is loaded, the system detects the temperature of each zone through a temperature sensor to ensure that the colored sand is in a heat storage state. If the temperature is insufficient, the heating mechanism 6 is activated to supplement the heating, drawing in air and heating it to form hot air. The hot air duct 62 serves as the hot air transmission channel, guiding the hot air from the air inlet to the air outlet. Through heat conduction and heat radiation, the heat is evenly transferred to each colored sand storage area 5 above it, raising the temperature of the colored sand and ensuring that the inside of the box 1 maintains a constant temperature.
[0043] By incorporating a vacuum cavity insulation layer 2, a composite substrate 3, and a heating mechanism 6, the vacuum cavity insulation layer 2 significantly reduces heat loss and extends the constant temperature time to more than twice that of traditional equipment. It has excellent heat preservation performance, reduces the need for frequent heating, and reduces heat loss. At the same time, it significantly saves energy and reduces consumption. The intermittent heating mode reduces energy consumption by 30%-50%, reducing operating costs and carbon emissions, which is in line with the trend of green energy saving.
[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A colored sand heat storage constant temperature box, characterized in that: The box is provided with a vacuum cavity heat insulation layer, and a composite base plate is obliquely arranged inside the box.
2. The colored sand heat-accumulating constant-temperature box according to claim 1, characterized in that: The box is provided with a box door, and the composite base plate is obliquely arranged from the side of the box door to the opposite side of the box.
3. A colored sand heat-retention thermostat according to claim 2, characterized in that: The composite base plate is provided with a plurality of reinforcing ribs, and the reinforcing ribs are sequentially and spacedly arranged below the composite base plate.
4. The colored sand heat-retention thermostat according to claim 1, characterized in that: The heating mechanism comprises a hot air centrifugal fan and a hot air duct, the hot air centrifugal fan is arranged below the composite base plate, the hot air source of the hot air centrifugal fan corresponds to the air inlet end of the hot air duct, and the air outlet end of the hot air duct is arranged towards the composite base plate.
5. A colored sand heat-retention thermostat according to claim 4, characterized in that: The composite base plate is further provided with a PTC ceramic heating sheet for heating, and the PTC ceramic heating sheet is arranged in the box.
6. The colored sand heat-accumulating constant-temperature box according to claim 1, characterized in that: Any of the partition plates is provided with a plurality of fence holes, and the fence holes are sequentially and spacedly arranged on the partition plate.
7. A colored sand heat-retention thermostat according to claim 6, characterized in that: The two sides of any of the partition plates are provided with guide rail insertion strips, the inner wall of the box is provided with guide rail grooves for mounting the partition plates, the number of the guide rail insertion strips is consistent with that of the guide rail grooves, and a single guide rail insertion strip corresponds to a single guide rail groove.
8. A colored sand heat-retention thermostat according to claim 7, characterized in that: The bottom of any of the partition plates is provided with a positioning tenon, and the composite base plate is provided with a positioning tenon groove for matching the positioning tenon.