Energy storage heating structure and heat preservation device
By incorporating a movable heating unit and insulation layer inside the insulated box, combined with a sealing design and a temperature controller, the problem of heat loss in traditional insulated boxes is solved, achieving efficient and flexible temperature control and uniform heating.
Patent Information
- Application Number
- CN202520127531.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Traditional insulated boxes have reduced insulation effectiveness over time, lack flexibility and have inaccurate temperature control, and heat is lost rapidly, especially when the lid is opened frequently.
A movable heating unit is installed inside the insulated box, and a heat insulation layer design is adopted. Combined with sealing rings and sealing grooves to reduce heat loss, a thermostat and heat transfer medium are provided to achieve precise temperature control.
It improves heat preservation and temperature uniformity, enhances the flexibility and ease of maintenance of the equipment, ensures that food temperature is maintained for a long time or in low-temperature environments, and provides intelligent temperature control and continuous heating capability.
Smart Images
Figure CN223836071U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat preservation box technology, and in particular to an energy storage heating structure and heat preservation device. Background Technology
[0002] In food delivery, medical supply storage, and other applications requiring temperature control, traditional insulated boxes typically rely on external heat sources or preheating media, resulting in diminishing insulation over time, lack of flexibility, and imprecise temperature control. To address these issues, developing a novel energy storage heating structure that combines a built-in heating unit with a high-efficiency insulation structure is essential. This structure not only provides stable heat output but also enables more precise temperature regulation through an intelligent temperature controller, thereby meeting the needs of different application scenarios and improving insulation performance and ease of use. Utility Model Content
[0003] In view of the above-mentioned problems in the prior art, this utility model is proposed.
[0004] The purpose of this invention is to provide an energy storage heating structure that solves the problem that the insulation effect of traditional insulated boxes is limited by time and the internal temperature of the insulated box is easily lost over time.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an energy storage heating structure, which includes an insulated box and an insulated box cover, wherein a heating unit is movably arranged at the bottom of the insulated box;
[0006] A certain distance is maintained between the heating unit and the inner wall of the insulation box. The heating unit is made of heat-conducting material, and a heat insulation layer is provided at the bottom of the heating unit.
[0007] As a preferred embodiment of the energy storage heating structure of this utility model, the insulated box cover includes a sealing ring and a sealing groove disposed on its inner side.
[0008] As a preferred embodiment of the energy storage heating structure of this utility model, the heating unit is a heating plate or block, and its outer wall is made of stainless steel.
[0009] As a preferred embodiment of the energy storage heating structure of this utility model, the heating unit is either a charging heating unit or an electric heating unit.
[0010] As a preferred embodiment of the energy storage heating structure of this utility model, the heating unit is a chemical heating pack or a hot water pack.
[0011] The beneficial effects of the energy storage heating structure of this utility model are as follows: by setting a movable heating unit inside the insulated box and using a heat insulation layer design to optimize heat distribution and management, it not only enhances the food insulation effect and ensures temperature uniformity, but also improves the flexibility of equipment use and the convenience of maintenance. It is particularly suitable for scenarios that require maintaining food temperature for a long time or transporting meals in low-temperature environments, and effectively solves the problem of rapid heat loss caused by frequent opening of the lid in traditional insulated boxes.
[0012] Another objective of this invention is to provide a heat preservation device that addresses the problem that traditional heat preservation boxes cannot provide real-time details of internal temperature changes.
[0013] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: a heat preservation device, which includes an energy storage heating structure; and a heating control unit, which is disposed on one side of the heat preservation box, including a temperature controller movably installed on one side of the heat preservation box, and a heat transfer medium fixedly connected to the heating unit.
[0014] As a preferred embodiment of the heat preservation device of this utility model, the heat preservation box body includes an opening that is movably connected to the heat preservation box cover, and holes that are not parallel to the direction of the opening.
[0015] The hole is connected to the heat transfer medium.
[0016] As a preferred embodiment of the heat preservation device of this utility model, the heat transfer medium includes an electrical connection wire with one end fixedly connected to the heating unit, and an electrical connector with one end fixedly connected to the electrical connection wire.
[0017] As a preferred embodiment of the heat preservation device of this utility model, the heat transfer medium includes a transmission pipe with one end fixedly connected to the heating unit.
[0018] As a preferred embodiment of the heat preservation device of this utility model, the temperature controller has a built-in or external temperature sensor.
[0019] The beneficial effects of this insulation device are as follows: the temperature controller can not only monitor the temperature inside the insulation box in real time, but also preset the required temperature and holding time inside the insulation box. In this way, the temperature controller can adjust the operation of the heating plate in advance to ensure that the required temperature is maintained before the temperature inside the insulation box drops below the set value, thereby providing the user with sufficient usage time. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a three-dimensional view of the overall energy storage heating structure in this utility model.
[0022] Figure 2 This is a cross-sectional view of the energy storage heating structure in this utility model.
[0023] Figure 3 This is a schematic diagram of the specific structure of the insulated box lid in this utility model.
[0024] Figure 4 This is a schematic diagram showing that the heat transfer medium in this utility model is electric heating.
[0025] Figure 5 This is a schematic diagram of a pipe as the heat transfer medium in this utility model. Detailed Implementation
[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.
[0029] Example 1
[0030] Reference Figure 1 This is the first embodiment of the present invention. This embodiment provides an energy storage heating structure, including an insulated box body 100, an insulated box lid 200, and a heating unit 300, which can enhance the food insulation effect and effectively solve the problem of rapid heat loss caused by frequent opening of the lid in traditional insulated boxes.
[0031] The insulated box body 100 and the insulated box cover 200 are provided, and a heating unit 300 is movably installed at the bottom inside the insulated box body 100.
[0032] A certain distance is maintained between the heating unit 300 and the inner wall of the insulation box 100. The heating unit 300 is made of heat-conducting material, and a heat insulation layer 301 is provided at the bottom of the heating unit 300.
[0033] It should be noted that in existing technologies, when delivering meals to students or large groups, although the insulated box is sealed during transportation, some heat will still be lost. Furthermore, the lid needs to be opened frequently during food distribution, leading to even faster heat loss, especially in low-temperature environments. Therefore, this embodiment is particularly suitable for the application scenario of insulated delivery boxes to solve these practical problems.
[0034] Preferably, a heating unit 300 is built into the insulated box 100, which can additionally increase heat transfer to the food inside the insulated box 100, so that the temperature of the food rises first. This ensures that there is sufficient heat loss during subsequent transportation and meal distribution, so that the food eaten by diners later in the process also has a certain amount of heat. The heating unit 300 is not fixedly connected to the insulated box 100, that is, the heating unit 300 can be removed from the insulated box 100 at any time. This not only facilitates the replacement and maintenance of the heating unit 300, but also makes it easier to clean the inside of the insulated box 100.
[0035] It should be noted that the heating unit 300 can take many forms, such as an electric heating plate, a flat plate made of stainless steel or other heat-conducting materials, which usually contains resistance wires or heating elements and is used directly by plugging in a power cord; or a chemical heating pack, a bagged heating pack composed of a mixture of iron powder, salt, water, etc. The heating pack is usually wrapped in waterproof material to prevent leakage. It is lightweight and easy to carry, requires no power supply, and is suitable for short-distance transportation. The heating pack undergoes an oxidation reaction upon contact with air, releasing heat for rapid and uniform heating. All of the above forms can have an insulation layer 301 added to the bottom, which can effectively isolate the heat generated by the heating unit 300 from downward transfer, protect the bottom of the insulation box 100 from high temperature, extend the service life of the equipment, and help maintain the upward transfer of temperature inside the insulation box by reducing heat loss at the bottom, thereby improving the overall insulation effect.
[0036] Ideally, in food delivery and distribution scenarios, electric heating plates offer the following significant advantages: Electric heating plates can rapidly raise the temperature in a short time, ensuring food reaches the required temperature quickly even in low-temperature environments. This is particularly important for scenarios requiring frequent opening of the lid for food distribution, as each opening results in heat loss. Electric heating plates can quickly replenish heat and maintain food temperature. While chemical heating packs can heat quickly, they are disposable and cannot provide continuous heat. Hot water bottles heat up slowly and cannot quickly replenish the heat lost due to frequent opening. Electric heating plates distribute heat evenly through thermally conductive materials, ensuring a consistent food temperature inside the insulated box and preventing localized overheating or cooling. This is crucial for ensuring food quality, especially when distributing large quantities of food, ensuring every student or customer receives food at the appropriate temperature. Chemical heating packs have limited temperature control and may cause localized overheating. Hot water bottles offer relatively uniform temperature distribution but cannot provide precise control.
[0037] Preferably, the heating unit 300 is movably positioned at the bottom of the insulation box 100, maintaining a certain distance from the inner wall of the insulation box. This not only facilitates the placement and removal of the heating unit 300, but also ensures uniform heat distribution and prevents the inner wall of the insulation box 100 from becoming too hot.
[0038] In summary, this utility model provides an energy storage heating structure. By setting a movable heating unit inside the insulated box and using a heat insulation layer design to optimize heat distribution and management, it not only enhances the food insulation effect and ensures temperature uniformity, but also improves the flexibility of equipment use and the convenience of maintenance. It is particularly suitable for scenarios that require maintaining food temperature for a long time or transporting meals in low-temperature environments, and effectively solves the problem of rapid heat loss caused by frequent opening of traditional insulated boxes.
[0039] Example 2
[0040] Reference Figures 1-3 This is the second embodiment of the present invention, which includes a specific structural form of an insulated box body 100, an insulated box lid 200, and a heating unit 300. It can enhance the heat preservation performance of the overall device and is particularly suitable for the application scenario of takeaway insulated boxes. It effectively solves the problem of rapid heat loss caused by frequent opening of the lid in traditional insulated boxes, and ensures that food can maintain a suitable temperature during transportation and distribution.
[0041] Furthermore, the insulated box cover 200 includes a sealing ring 201 and a sealing groove 202 disposed on its inner side.
[0042] Preferably, thermal convection is the process of transferring heat through the flow of air or other fluids. If there are gaps between the insulated box lid and the box body, hot air will escape from these gaps, while cold air will enter from the outside. Through the sealing ring 201 and sealing groove 202, the airflow path can be greatly reduced or even eliminated, thereby reducing heat loss caused by convection.
[0043] Furthermore, the heating unit 300 is a heating plate or block, and its outer wall is made of stainless steel.
[0044] Furthermore, the heating unit 300 is either a rechargeable heating unit or a plug-in heating unit.
[0045] It should be noted that the basic structure of a plug-in electric heating plate consists of the following components: the heating element is typically a resistance wire or ceramic heating plate, used to generate heat; the heat-conducting plate is made of a material with good thermal conductivity, such as stainless steel or aluminum, used to evenly conduct the heat generated by the heating element to the food inside the heat preservation box; the temperature control system includes a temperature sensor and a controller, used to monitor and adjust the temperature of the heating plate to ensure that the food is kept within a suitable temperature range; the power interface is usually a standard power plug, which can be directly plugged into a mains outlet; an insulation layer covers the outside of the heating element to prevent the risk of electric shock and improve safety; the outer shell protects the internal components from physical damage and also provides a certain degree of waterproof and dustproof function; the plug-in electric heating plate can be continuously powered, suitable for long-term heat preservation needs, without worrying about the battery running out;
[0046] The basic structure of a rechargeable electric heating plate consists of a heating element, a heat-conducting plate, and a temperature control system, similar to that of a plug-in type. The battery pack contains a built-in rechargeable battery, such as a lithium-ion battery, to provide power for mobile use. The charging interface, such as USB-C or a dedicated charging port, is used to connect a charger to charge the battery. Rechargeable electric heating plates are highly portable and can be used in places without power outlets. They are suitable for short-distance transportation or temporary heat preservation needs. When a power source is available, the power can be restored by charging, allowing for cyclical use.
[0047] Regardless of the method, electric heating plates are designed with an efficient heat conduction mechanism to ensure that heat can be transferred to food quickly and evenly. Both are equipped with necessary electrical safety measures, such as overheat protection and short circuit protection, to ensure safety during use.
[0048] Furthermore, the heating unit 300 is a chemical heating pack or a hot water pack.
[0049] Ideally, chemical heating packs or hot water packs do not require an external power source, are lightweight and portable, and can assist electric heating in emergency rapid heating.
[0050] When using,
[0051] 1. Working principle of plug-in electric heating plate
[0052] Insert the electric heating plate into the power socket to turn on the power; the current passes through the heating element—resistance wire or ceramic heating plate—to generate heat; the heat is conducted through the heat conduction plate to the insulated box, and then transferred to the food; the temperature sensor monitors the temperature of the heating plate, and the controller adjusts the power of the heating element according to the sensor data to maintain a constant temperature. When the preset temperature is reached, the controller will automatically adjust to maintain that temperature.
[0053] 2. Working principle of rechargeable electric heating plate
[0054] Where there is a power source, the built-in battery can be charged via a charging port such as USB-C or a dedicated charging port. Once the battery is fully charged, disconnect the charger, and the electric heating plate can be carried around. When needed, turn on the power switch of the electric heating plate, and the battery will start supplying power. Current passes through the heating element—resistance wire or ceramic heating plate—to generate heat. The heat is conducted through the heat-conducting plate to the warming box, and then to the food. A temperature sensor monitors the temperature of the heating plate, and the controller adjusts the power of the heating element according to the sensor data to maintain a constant temperature. When the preset temperature is reached, the controller will automatically adjust to maintain that temperature. When the battery is low, it can be recharged to restore power, allowing for cyclical use.
[0055] It should be noted that both plug-in and rechargeable electric heating plates are equipped with necessary electrical safety measures, such as: when the temperature is detected to be too high, the controller will automatically cut off the power to prevent equipment damage or fire risk; the heating plate has a built-in fuse or circuit protection device, which can quickly cut off the power in the event of a short circuit to protect the safety of the equipment and the user; an insulation layer covers the outside of the heating element to prevent the risk of electric shock and improve overall safety.
[0056] In summary, this invention significantly improves the sealing performance of the insulated box by adding a sealing ring and sealing groove to the inside of the lid, effectively reducing the escape of hot air and the entry of cold air from the outside, thus better maintaining the temperature of the food. It also provides two heating methods: rechargeable and plug-in. The latter is suitable for long-term heat preservation needs, while the former is suitable for short-distance transportation or temporary heat preservation needs. Both have efficient heat conduction, ensuring uniform heat transfer, and are equipped with basic electrical safety measures such as overheat protection and short-circuit protection to ensure safety during use. Furthermore, a chemical heating pack or hot water pack is provided as an auxiliary heating option, requiring no external power source, and is lightweight and portable, making it particularly suitable for rapid heating in emergency situations.
[0057] Example 3
[0058] Reference Figures 1-5This is the third embodiment of the present invention, which further provides a heat preservation device. It includes an energy storage heating structure and a heating control unit 400, enabling more intelligent and precise temperature control and enhancing the sealing performance and durability of the heat preservation box.
[0059] Specifically, the heating control unit 400 is located on one side of the insulation box 100, and includes a temperature controller 401 movably installed on one side of the insulation box 100, and a heat transfer medium 402 fixedly connected to the heating unit 300.
[0060] Furthermore, the insulated box 100 includes an opening 101 that is movably connected to the insulated box cover 200, and a hole 102 that is not parallel to the direction of the opening 101.
[0061] Hole 102 is actively connected to heat transfer medium 402.
[0062] Furthermore, the heat transfer medium 402 includes an electrical connection wire 402a fixedly connected at one end to the heating unit 300, and an electrical connector 402b fixedly connected at one end to the electrical connection wire 402a.
[0063] It should be noted that when the heat transfer medium 402 is electrically heated, the heating unit 300 is an electric heating plate made of stainless steel.
[0064] Furthermore, the heat transfer medium 402 includes a transmission pipe 402c with one end fixedly connected to the heating unit 300.
[0065] Furthermore, the thermostat 401 has a built-in or external temperature sensor.
[0066] It should be noted that the opening 101 facilitates the storage and retrieval of food, while the movable insulated lid 200 ensures a tight seal. The hole 102 provides a channel for the heat transfer medium 402, ensuring that electrical connection wires or transmission pipes can be smoothly connected to the heating unit 300 without affecting the sealing performance of the insulated box. The temperature sensor can monitor the actual temperature inside the insulated box in real time and feed the data back to the temperature controller 401, thereby achieving precise temperature control. NTC thermistors or other types of temperature sensing elements have high sensitivity and accuracy, ensuring the reliability of temperature control. If a liquid or gas is used as the heat transfer medium, the transmission... Pipe 402c can evenly distribute heat to all parts of the insulation box, thereby achieving a more uniform heating effect. If electric heating is used as the heat transfer medium, the electrical connection can be implemented through hole 102 to connect the electric heating plate and the power supply. Many types of existing temperature controllers 401 are suitable for this embodiment. If a simple, easy-to-use and low-cost solution is required, Schneider Electric Zelio series or Panasonic KT-1000 series temperature controllers 401 can be selected. If higher accuracy and more functions are required, Omron E5CC series or Honeywell HC900 series temperature controllers 401 can be selected.
[0067] When using,
[0068] A thermostat 401 is mounted on the outside of the insulation box 100. The thermostat 401 is electrically connected to the heating plate. The heating plate is connected to a socket through an additional line and starts to heat up after being powered on. The heat is transferred to the inside of the insulation box 100 through the stainless steel surface.
[0069] The thermostat 401 has a built-in or external temperature sensor for detecting the actual temperature inside the insulation box 100;
[0070] The sensor can be an NTC negative temperature coefficient thermistor or other types of temperature sensing element;
[0071] Circuit diagram summary:
[0072] Power cord -> Fuse -> Live wire terminal of thermostat -> Load terminal of thermostat -> Heating plate -> Neutral wire;
[0073] Operating principle of thermostat 401
[0074] Temperature setting: Users can set the target temperature range through the adjustment knob or digital interface on the temperature controller 401. For example, when the temperature inside the insulation box 100 is below 70°C, the heating plate starts to work, and when the temperature inside the insulation box 100 reaches 100°C, the heating plate stops heating.
[0075] If a temperature range of 0°C to 70°C needs to be set, the user can adjust the setting value on the thermostat 401 accordingly so that the heating plate starts when the temperature drops below 70°C and stops when the temperature rises to 100°C. However, since the ambient temperature rarely drops below 0°C, this setting may not trigger the heating plate to work unless used under special conditions.
[0076] Workflow:
[0077] When the temperature inside the insulation box 100 drops to a preset minimum temperature, such as below 70°C, the temperature sensor sends a signal to the temperature controller 401.
[0078] When the temperature controller 401 receives a signal that the temperature is lower than the set point, it closes the internal relay or switch, which powers on the heating plate and starts heating.
[0079] When the temperature rises to the preset maximum temperature, such as 100℃, the temperature sensor sends a signal to the temperature controller 401 again.
[0080] When the temperature controller 401 receives a signal that the temperature is higher than the set point, it disconnects the internal relay or switch, cuts off the power supply to the heating plate, and stops it from heating.
[0081] In summary, this invention provides more intelligent and precise temperature control through a heating control unit combined with a temperature controller and a heat transfer medium, enhancing the sealing performance and durability of the insulation box. It also provides multiple heat transfer options, such as electric heating and liquid / gas heating, ensuring continuous heating capacity and an efficient heat conduction mechanism.
[0082] Importantly, the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. An energy storage heating structure, characterized in that: include, The insulated box body (100) and the insulated box cover (200) are provided with a heating unit (300) movably installed at the bottom inside the insulated box body (100); The heating unit (300) maintains a certain distance from the inner wall of the insulation box (100). The heating unit (300) is made of heat-conducting material, and a heat insulation layer (301) is provided at the bottom of the heating unit (300).
2. The energy storage heating structure as described in claim 1, characterized in that: The insulated box cover (200) includes a sealing ring (201) and a sealing groove (202) disposed on its inner side.
3. The energy storage heating structure as described in claim 1, characterized in that: The heating unit (300) is a heating plate or block.
4. The energy storage heating structure as described in claim 3, characterized in that: The heating unit (300) is either a rechargeable heating unit or a plug-in heating unit.
5. The energy storage heating structure as described in claim 1, characterized in that: The heating unit (300) is a chemical heating pack or a hot water pack.
6. A heat preservation device, characterized in that: Includes the energy storage heating structure according to any one of claims 1 to 4; and, A heating control unit (400) is disposed on one side of the insulation box (100), and includes a thermostat (401) movably installed on one side of the insulation box (100) and a heat transfer medium (402) fixedly connected to the heating unit (300).
7. The heat preservation device as described in claim 6, characterized in that: The insulated box body (100) includes an opening (101) movably connected to the insulated box cover (200) and a hole (102) not parallel to the direction of the opening (101); The hole (102) is movably connected to the heat transfer medium (402).
8. The heat preservation device as described in claim 6, characterized in that: The heat transfer medium (402) includes an electrical connection wire (402a) with one end fixedly connected to the heating unit (300), and an electrical connector (402b) with one end fixedly connected to the electrical connection wire (402a).
9. The heat preservation device as described in claim 6, characterized in that: The heat transfer medium (402) includes a transmission pipe (402c) with one end fixedly connected to the heating unit (300).
10. The heat preservation device as described in claim 6, characterized in that: The temperature controller (401) has a built-in or external temperature sensor.