A heating device and a food delivery system

Abstract

The application discloses a heating device and a meal delivery system, and belongs to the technical field of heating protection. The heating device comprises a heating mechanism, at least one heating piece surrounding a containing portion, a fuse mechanism installed in the containing portion to transfer heat generated by the heating piece to the fuse mechanism, wherein the fuse mechanism is configured to melt when the temperature in the containing portion reaches a preset temperature, and an electrical connection mechanism electrically connected with the heating mechanism and the fuse mechanism, the electrical connection mechanism having a power-on state and a power-off state, the heating mechanism being started and operated when the electrical connection mechanism is in the power-on state, and the heating mechanism being stopped when the electrical connection mechanism is in the power-off state, and the electrical connection mechanism being configured to switch from the power-on state to the power-off state when the fuse mechanism melts. In this way, the heating piece cannot continue to heat after the fuse mechanism melts, thereby avoiding the overall heating device from continuing to operate and dry burning, and further avoiding safety accidents such as electric leakage and fire.

Description

Technical Field

[0001] This application relates to the field of heating protection technology, and in particular to a heating device and a food delivery system. Background Technology

[0002] Conveyor belt food delivery systems are widely used in the catering industry because they transport food to the dining area via conveyor belts, allowing guests to freely choose from the food on the conveyor belt while seated. This provides customers with more options and eliminates the need for waiters, saving on labor costs.

[0003] A conveyor belt food delivery system typically includes a frame, delivery stations mounted on the frame, and a heating device. The heating device keeps the food on the delivery stations warm, ensuring that the food delivered to the dining area is at a suitable temperature for customers. The frame usually has a cavity for holding liquids; the delivery station is located at the opening of this cavity, and the heating device is located inside. When the heating device is running, the liquid in the cavity is heated, thus heating and keeping the food warm.

[0004] Heating devices typically include an electric heating element that heats the liquid inside a cavity. As the liquid evaporates during heating, its volume decreases. Therefore, to prevent the heating element from burning out, a liquid level sensor is usually installed to monitor the liquid level. When the liquid level falls below a set level, the heating element stops heating, preventing accidents such as electric shock and fire caused by dry burning. However, the sensitivity of liquid level sensors can be problematic. If the sensor fails to detect that the liquid level is below the set level, the heating element may continue to operate, leading to dry burning and potentially causing accidents such as electric shock and fire.

[0005] Therefore, those skilled in the art are dedicated to developing a heating device and food delivery system that can prevent dry burning and thus avoid safety accidents. Summary of the Invention

[0006] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by this application is how to ensure that the heating device can avoid dry burning and thus prevent safety accidents when the liquid level is lower than the set liquid level.

[0007] To achieve the above objectives, this application provides a heating device, comprising:

[0008] A heating mechanism, comprising at least one heating element having a receiving portion enclosing it;

[0009] A fuse mechanism is installed within the receiving portion to transfer heat generated by the operation of the heating element to the fuse mechanism; wherein the fuse mechanism is configured to melt when the temperature within the receiving portion reaches a preset temperature;

[0010] An electrical connection mechanism is electrically connected to the heating mechanism and the fuse mechanism. The electrical connection mechanism has an on-state and an off-state. When it is in the on-state, the heating mechanism starts and runs. When it is in the off-state, the heating mechanism stops running. The electrical connection mechanism is configured to switch from the on-state to the off-state when the fuse mechanism melts.

[0011] In one embodiment, the number of heating elements is set to one;

[0012] The heating element is bent multiple times to form the receiving portion, or the heating element is arranged in a spiral shape to form the receiving portion.

[0013] In one embodiment, there are two or more heating elements, and the two or more heating elements are arranged along a preset direction and in a preset pattern to form the receiving portion;

[0014] The preset direction is any one of the horizontal direction, vertical direction, and circumferential direction, and the preset pattern is at least one of the straight line, triangle, rectangle, circle, and polygon.

[0015] In one embodiment, two or more of the heating elements have the same structure;

[0016] Each of the heating elements includes a first support portion, a second support portion disposed on one side of the first support portion and parallel to the first support portion, and a bent portion connecting the first support portion and the second support portion, wherein the first support portion, the second support portion and the bent portion together form the receiving portion.

[0017] In one embodiment, the first support portion, the second support portion, and the bending portion are integrally formed.

[0018] In one embodiment, the heating mechanism further includes at least one conductive element for connecting the heating element and the fusion mechanism, the conductive element being configured to transfer heat generated by the operation of the heating element to the fusion mechanism.

[0019] In one embodiment, the conductive member includes a body and a through hole disposed on the body, the through hole through which the heating mechanism and the fusion mechanism pass to connect the heating mechanism and the fusion mechanism.

[0020] In one embodiment, the body includes a heat-conducting portion and a coating applied to the heat-conducting portion, the coating being configured to prevent the heat-conducting portion from reacting with liquids and / or gases.

[0021] In one embodiment, the conductive element is made of a metallic material.

[0022] In one embodiment, the number of conductive elements is two or more, and the two or more conductive elements are distributed along the length direction of the fusion mechanism.

[0023] In one embodiment, the fusion mechanism includes a heat-receiving element having a hollow portion and a fusion element partially disposed within the hollow portion, the heat-receiving element being configured to protect the fusion element.

[0024] In one embodiment, the fuse includes a fuse located within the hollow portion and a lead connecting the fuse and the electrical connection mechanism, the lead being configured to switch the electrical connection mechanism from an on-state to an off-state after the fuse blows.

[0025] In one embodiment, along the length of the fuse element, the centerline of the fuse element coincides with or tends to coincide with the centerline of the receiving portion.

[0026] In one embodiment, the heating device further includes a base having a first surface and a second surface disposed opposite to each other, the heating mechanism and the fusion mechanism being mounted on the first surface of the base, and the electrical connection mechanism being mounted on the second surface of the base.

[0027] In one embodiment, the electrical connection mechanism includes a connecting post mounted on the second surface, the connecting post being electrically connected to the heating element.

[0028] This application also provides a food delivery system, including a frame, a tray conveyor mounted on the frame, and a heating device. The frame has a cavity for holding liquid, the tray conveyor is located at the opening of the cavity, and the heating device is located inside the cavity and configured to heat the liquid inside the cavity after operation.

[0029] The heating device is the same as described above.

[0030] The heating device and food delivery system provided in this application have at least the following technical effects:

[0031] 1. By setting up a heating element with a housing, and setting a fuse mechanism inside the housing, the heat generated by the heating element during operation can be transferred to the housing and then to the fuse mechanism. When the temperature inside the housing reaches the preset temperature, the fuse mechanism melts, and the electrical connection mechanism connected to the fuse mechanism and the heating mechanism switches from the energized state to the de-energized state, so that the heating element can no longer heat, thereby preventing the heating device from continuing to run dry and further preventing safety accidents such as leakage and fire.

[0032] 2. By providing a conductive component, which connects the heating mechanism and the fuse mechanism, the temperature generated by the heating mechanism after it starts operating is directly transferred to the fuse mechanism through the conductive component. The temperature transfer coefficient of the conductive component is higher than that of gas and liquid, which enables the fuse mechanism to melt quickly, thereby further ensuring the accelerated shutdown of the heating mechanism and further improving the safety of the heating device.

[0033] 3. By setting the center line of the fusing mechanism to coincide with or nearly coincide with the center line of the receiving part, the fusing element is located at the center of the receiving part, thereby enabling the temperature of the heating mechanism to be evenly transferred to the fusing element, further promoting the fusing speed of the fusing element at high temperature, and ensuring the overall safety of the heating device.

[0034] The following will further explain the concept, specific structure and technical effects of this application in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this application. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a heating device according to an embodiment of this application;

[0036] Figure 2 yes Figure 1 Partial structural diagram;

[0037] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0038] Figure 4 yes Figure 3 Partial structural diagram;

[0039] Figure 5 This is a schematic diagram of the structure of a conductive element according to an embodiment of this application. Detailed Implementation

[0040] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0041] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0042] Some exemplary embodiments of this application have been described for illustrative purposes. It should be understood that this application may be implemented in other ways not specifically shown in the accompanying drawings.

[0043] like Figures 1 to 5 As shown, in one embodiment of this application, the heating device is installed in a food delivery system to ensure that the food in the system is kept at an ideal temperature for consumption by guests. Alternatively, in another embodiment, the heating device can also be used in a hot water drinking system to heat cold water to a target temperature (e.g., 45°C, 50°C, 60°C, 75°C, 85°C, 100°C, etc.) for drinking by guests. The target temperature mentioned above is only an example temperature. In other embodiments, the specific value of the target temperature can be adjusted according to the actual situation, such as 30°C, 44°C, etc., and is not specifically limited here, but depends on the actual situation. In the following, the heating device installed in a food delivery system is used as an example for specific explanation.

[0044] The food delivery system includes a frame, a tray conveyor mounted on the frame, and a heating device. The frame can be connected to a dining table, allowing guests to directly access their food from the tray conveyor. The frame and dining table can be integrally molded to enhance their stability and prevent future wobbling or displacement that could affect the dining experience. Alternatively, the frame and dining table can be separate units, connected later through splicing or fixing, allowing for more flexible arrangement based on dining needs. This embodiment does not specify a particular connection method between the frame and dining table; it depends on the actual situation.

[0045] The food delivery system also includes a control mechanism that controls the operation of the tray transport station and heating device.

[0046] The control mechanism may include storage and processing circuitry for controlling system operations. The circuitry may include storage devices such as hard disk drive storage devices, non-volatile memory (e.g., electrically programmable read-only memory configured to form a solid-state drive), volatile memory (e.g., static or dynamic random access memory), etc. The circuitry in the control circuitry may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio chips, graphics processing units, application-specific integrated circuits (ASICs), and other integrated circuits. Software code (instructions) may be stored in the circuitry's memory and run on the processing circuitry in the circuitry to perform system operations (e.g., data collection operations, operations involving adjusting components using control signals, image rendering operations to generate image content to be displayed to the user, etc.).

[0047] Control may include wireless circuitry and / or other circuitry, if necessary, to support communication with a computer or other external devices (e.g., providing displayable computer and image content). During operation, the control circuitry can provide image content to be displayed. The content may be remotely received (e.g., from a computer or other content sources coupled to the system) and / or may be generated by the control circuitry (e.g., text, other computer-generated content, etc.). The displayed content is provided by the control circuitry so that the viewer can view it in a window.

[0048] The food preparation area has a food preparation area and a food serving area connected to the food preparation area. The food preparation area is located near the kitchen to connect to the kitchen. Food prepared in the kitchen can be placed directly in the food preparation area and then transported to the food serving area for customers to pick up.

[0049] Both the food preparation area and the food serving area described above include a drive unit, a transmission unit connected to the drive unit, and a conveyor belt sleeved on the transmission unit. The drive unit drives the transmission unit to rotate, which in turn drives the conveyor belt to rotate, allowing the food placed on the conveyor belt to move from the food preparation area to the food serving area. In this embodiment, the drive unit is a drive motor, the transmission unit is a transmission wheel, and the conveyor belt is a transmission belt wound around the transmission wheel. In other embodiments, the drive unit may also be an electric cylinder. In this case, the transmission unit is a lead screw connected to the electric cylinder and converting the linear motion of the electric cylinder into rotational motion. No specific limitation is made here; it depends on the actual situation.

[0050] The frame has a cavity for holding liquid, with a tray conveyor located at the opening of the cavity. A heating device is located inside the cavity and configured to heat the liquid inside after operation. In this embodiment, the liquid inside the cavity is water. The heating device generates heat, causing the water temperature to rise from room temperature until it reaches a preset temperature. Common preset temperatures are as described above, such as 45℃, 50℃, 60℃, 75℃, 85℃, 100℃, etc., and are not specifically limited here, depending on the actual situation.

[0051] Water evaporates upon heating, so the liquid level inside the cavity gradually decreases during the operation of the heating device. When the liquid level drops to the bottom of the heating device, or when all the liquid in the cavity has evaporated, the heating device will be in a dry-burning state because it cannot heat the liquid if it continues to operate. A dry-burning heating device is prone to accidents such as electric leakage and fire. Therefore, to prevent these accidents, existing technologies typically install a liquid level sensor inside the cavity. The liquid level sensor monitors the liquid level, and when the liquid level falls below a preset level, it issues an alarm, informing the user that water needs to be added to the cavity.

[0052] However, the accuracy of the liquid level sensor can be problematic. When the liquid level sensor malfunctions, if the liquid level in the cavity falls below the preset level, the sensor will not send an alarm signal, and the heating device will continue to operate. This can cause the heating device to continue to burn dry, which can still lead to safety issues such as electric leakage and fire, resulting in poor reliability.

[0053] To address the aforementioned technical problems, the heating device in this embodiment includes a heating mechanism 1, a fusing mechanism 2, and an electrical connection mechanism 3. The electrical connection mechanism 3 is electrically connected to the heating mechanism 1 and the fusing mechanism 2. The heating mechanism 1 has an enclosing accommodating portion 13, within which the fusing mechanism 2 is installed. When the liquid level in the cavity is below the heating device or when there is no liquid in the cavity, the heating mechanism 1 generates high temperatures through dry burning. These high temperatures are rapidly transmitted to the accommodating portion 13, causing the fusing mechanism 2 within the accommodating portion 13 to melt. This, in turn, de-energizes the electrical connection mechanism 3, preventing the heating mechanism 1 from continuing to operate, thereby preventing leakage and fire. Since the heating device in this embodiment primarily relies on the melting temperature and properties of the fusing mechanism 2, it can achieve power on / off of the heating device without the need for signal transmission. This allows the heating device in a dry-burning state to be quickly de-energized and stop operating, improving the reliability and safety of the heating device. Therefore, the heating device in this embodiment primarily relies on physical protection and has high reliability. Even when detection components such as liquid level sensors fail, the heating device still maintains high reliability and safety.

[0054] Specifically, the heating mechanism 1 includes at least one heating element 11 that surrounds and forms a receiving portion 13. When there is only one heating element 11, in one embodiment, the heating element 11 is bent multiple times to form the receiving portion 13. For example, the heating element 11 is placed vertically, then bent 90° horizontally, then bent 90° vertically, and then bent 90° horizontally again, so that the 3-folded heating element 11 forms a U-shape, thereby forming the receiving portion 13. Similarly, the heating element 11 can be bent multiple times in this manner to form the receiving portion 13. The bending angle (90°) described above is an example angle; in other embodiments, the bending angle can also be 30°, 45°, 60°, 75°, etc., and is not specifically limited here, depending on the actual situation.

[0055] As mentioned above, the example range with intervals of 15 does not preclude growth with intervals of appropriate units such as 1, 2, 4, 5, etc. These are merely examples intended to clarify the point, and it can be assumed that all possible combinations of values ​​listed between the minimum and maximum values ​​are explicitly described in this specification in a similar manner.

[0056] Other limitations on numerical ranges mentioned in this article can be found in the above description and will not be repeated here.

[0057] In another embodiment, a single heating element 11 is spirally arranged to form a receiving portion 13. The spirally arranged heating element 11 has a spiral portion, the hollow part of which forms the receiving portion 13, and the fusing mechanism 2 can be placed within the hollow part of the spiral portion. When the heating element 11 is in operation, its temperature is transferred to the fusing mechanism 2, causing the fusing mechanism 2 to melt upon reaching a preset temperature. This preset temperature is the set temperature of the fusing mechanism 2, such as 100°C, and is not specifically limited here, but depends on the actual situation.

[0058] The number of heating elements 11 is two or more, and the two or more heating elements 11 are arranged along a preset direction and in a preset pattern to form the receiving portion 13. The preset direction is any one of a horizontal direction, a vertical direction, and a circumferential direction, and the preset pattern is at least one of a straight line, a triangle, a rectangle, a circle, and a polygon. Furthermore, the two or more heating elements 11 have identical structures, ensuring that the heat transferred to the fusing mechanism 2 is consistent and more uniform.

[0059] For example, when there are two heating elements 11, each heating element 11 is cylindrical in shape, and the two heating elements 11 are arranged in a straight line along the horizontal or vertical direction. In this case, the distance between the two heating elements 11 is the aforementioned receiving portion 13, and the melting mechanism 2 is disposed within the distance between the two heating elements 11.

[0060] When there are three heating elements 11, the three heating elements 11 are arranged in a triangular pattern along the circumference, and each heating element 11 is cylindrical. At this time, the space between the three heating elements 11 is the aforementioned accommodating part 13, and the fusing mechanism 2 is disposed in the space between the three heating elements 11.

[0061] When the number of heating elements 11 is four, five, or so, and each heating element 11 is cylindrical, the arrangement of the heating elements 11 can be arbitrarily distributed in the horizontal, vertical, or circumferential directions as described above. They can also be arranged arbitrarily in the form of rectangles, circles, or polygons, which will not be elaborated here.

[0062] Alternatively, when there are two or more heating elements 11, unlike the above, in this embodiment, the heating elements 11 are U-shaped, and the two or more heating elements 11 can be arranged in a rectangular shape along the circumference. Alternatively, the two or more heating elements 11 can be arranged in a circular shape along the circumference. In this embodiment, when the fusing mechanism 2 is placed in the ferrule formed by the heating elements 11, heat is transferred from multiple corners of the ferrule 13 to the fusing mechanism 2, causing the temperature inside the ferrule 13 to rise rapidly to a preset angle, thereby causing the fusing mechanism 2 to melt quickly, improving the safety and reliability of the heating device.

[0063] As described above, when heat is transferred to all sides of the fusible link 2, the overall reliability and safety of the heating device are further guaranteed. Therefore, the heating element 11 in this embodiment has the aforementioned U-shape, and the structure of the heating element 11 is the same. Furthermore, three heating elements 11 are provided, two of which are of the same size, and the third heating element 11 is smaller than the other two. This allows the top of the smaller heating element 11 to be lower than the tops of the other two larger heating elements 11, thus avoiding collisions. Alternatively, two heating elements 11 are of the same size, and the third heating element 11 is larger than the other two. This allows the top of the larger heating element 11 to be higher than the tops of the other two smaller heating elements 11, again avoiding collisions.

[0064] Specifically, each heating element 11 includes a first support portion 111, a second support portion 112 disposed on one side of the first support portion 111 and parallel to the first support portion 111, and a bent portion 113 connecting the first support portion 111 and the second support portion 112. The first support portion 111, the second support portion 112, and the bent portion 113 together form a receiving portion 13. In this embodiment, the first support portion 111, the second support portion 112, and the bent portion 113 are integrally formed to ensure that the heating element 11 has good stability and to simplify the manufacturing process.

[0065] To further improve the reliability and safety of the heating device, the heating mechanism 1 also includes at least one conductive member 12 for connecting the heating element 11 and the fuse mechanism 2. The conductive member 12 is configured to transfer the heat generated by the operation of the heating element 11 to the fuse mechanism 2.

[0066] The conductive member 12 includes a body 121 and a through hole 122 provided on the body 121. The through hole 122 allows the heating mechanism 1 and the fuse 2 to pass through, thereby connecting the heating mechanism 1 and the fuse 2. As can be seen from the above, the heating mechanism 1 surrounds and forms a receiving portion 13, and the fuse 2 is located within the receiving portion 13. Therefore, the position of the through hole 122 on the body 121 corresponds to the positions of the heating mechanism 1 and the fuse 2.

[0067] The through-hole 122 on the body 121 includes a first hole 1221 and a second hole 1222. The first hole 1221 is for the heating mechanism 1 to pass through, and the second hole 1222 is for the fusing mechanism 2 to pass through. The first hole 1221 is distributed along the circumferential direction, and the second hole 1222 is located at the center of the body 121. When the heating mechanism 1 and the fusing mechanism 2 are installed on the conductive member 12, the temperature of the heating mechanism 1 can be evenly transferred to the fusing mechanism 2.

[0068] The number of conductive elements 12 is two or more, and these conductive elements 12 are distributed along the length of the fusion mechanism 2, thereby increasing the speed of temperature conduction. In this embodiment, the number of conductive elements 12 is three. In other embodiments, the number of conductive elements 12 can be two, four, five, etc., and is not specifically limited here, but depends on the actual situation, such as the length of the fusion mechanism 2 and the speed of temperature transmission.

[0069] In one embodiment, the body 121 includes a heat-conducting portion and a coating applied to the heat-conducting portion. The coating is configured to prevent the heat-conducting portion from reacting with liquids and / or gases. The heat-conducting portion is metal, such as aluminum or aluminum alloy, and the coating is such as a Teflon coating; no specific limitation is made here, and the choice depends on the actual situation.

[0070] In another embodiment, the conductive element 12 is made of a metallic material, such as copper or stainless steel. Copper and stainless steel are not prone to rust, which ensures their thermal conductivity.

[0071] As described above, the fuse mechanism 2 is installed within the housing 13 to transfer the heat generated by the heating element 11 to the fuse mechanism 2. The fuse mechanism 2 is configured to melt when the temperature within the housing 13 reaches a preset temperature. Therefore, the fuse mechanism 2 easily melts at high temperatures to achieve a protective function.

[0072] Specifically, the fuse mechanism 2 includes a heat-receiving element 21 with a hollow portion and a fuse element 22 partially disposed within the hollow portion. The heat-receiving element 21 is configured to protect the fuse element 22. The heat-receiving element 21 serves as a housing, providing protection and support for the fuse element 22. The fuse element 22 includes a fuse 221 located within the hollow portion and a lead wire 222 connecting the fuse 221 and the electrical connection mechanism 3. The lead wire 222 is configured to switch the electrical connection mechanism 3 from a powered-on state to a powered-off state after the fuse 221 melts.

[0073] Along the length of the fuse element 22, the center line of the fuse element 22 coincides with or tends to coincide with the center line of the receiving part 13, thereby ensuring uniform temperature transmission and further improving the overall safety and reliability of the heating device.

[0074] Electrical connection mechanism 3 is electrically connected to heating mechanism 1 and fuse mechanism 2. Electrical connection mechanism 3 has an on-state and an off-state. When it is in the on-state, heating mechanism 1 starts and runs. When it is in the off-state, heating mechanism 1 stops running. Electrical connection mechanism 3 is configured to switch from the on-state to the off-state when fuse mechanism 2 melts.

[0075] In this embodiment, the electrical connection mechanism 3 includes a connecting post 31 mounted on the second surface 42, and the connecting post 31 is electrically connected to the heating element 11.

[0076] The heating device also includes a base 4, which has a first surface 41 and a second surface 42 that are arranged opposite to each other. The heating mechanism 1 and the fuse mechanism 2 are mounted on the first surface 41 of the base 4, and the electrical connection mechanism 3 is mounted on the second surface 42 of the base 4, so as to facilitate the connection of the heating device as a whole with other circuits.

[0077] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A heating device, characterized in that, include: A heating mechanism, comprising at least one heating element having a receiving portion enclosing it; A fuse mechanism is installed within the receiving portion to transfer heat generated by the operation of the heating element to the fuse mechanism; wherein the fuse mechanism is configured to melt when the temperature within the receiving portion reaches a preset temperature; An electrical connection mechanism is electrically connected to the heating mechanism and the fuse mechanism. The electrical connection mechanism has an on-state and an off-state. When it is in the on-state, the heating mechanism starts and runs. When it is in the off-state, the heating mechanism stops running. The electrical connection mechanism is configured to switch from the on-state to the off-state when the fuse mechanism melts.

2. The heating device of claim 1, wherein The number of heating elements is set to one; The heating element is bent multiple times to form the receiving portion, or the heating element is arranged in a spiral shape to form the receiving portion.

3. The heating device of claim 1, wherein, The number of heating elements is set to two or more, and the two or more heating elements are arranged along a preset direction and in a preset pattern to form the receiving part; The preset direction is any one of the horizontal direction, vertical direction, and circumferential direction, and the preset pattern is at least one of the straight line, triangle, rectangle, circle, and polygon.

4. The heating device as described in claim 3, characterized in that, Two or more of the heating elements have the same structure; Each of the heating elements includes a first support portion, a second support portion disposed on one side of the first support portion and parallel to the first support portion, and a bent portion connecting the first support portion and the second support portion, wherein the first support portion, the second support portion and the bent portion together form the receiving portion.

5. The heating device of claim 4, wherein The first support part, the second support part, and the bending part are integrally formed.

6. The heating device of any one of claims 1 to 5, wherein, The heating mechanism further includes at least one conductive element for connecting the heating element and the fusion mechanism, the conductive element being configured to transfer the heat generated by the operation of the heating element to the fusion mechanism.

7. The heating device as described in claim 6, characterized in that, The conductive element includes a body and a through hole disposed on the body, the through hole through which the heating mechanism and the fusion mechanism pass to connect the heating mechanism and the fusion mechanism.

8. The heating device of claim 7, wherein The body includes a heat-conducting part and a coating applied to the heat-conducting part, the coating being configured to prevent the heat-conducting part from reacting with liquids and / or gases.

9. The heating device of claim 6, wherein, The conductive element is made of metal.

10. The heating device as claimed in claim 6, characterized in that, The number of conductive elements is two or more, and the two or more conductive elements are distributed along the length direction of the fuse mechanism.

11. The heating device according to any one of claims 1 to 5, characterized in that, The fusion mechanism includes a heat-receiving element having a hollow portion and a fusion element partially disposed within the hollow portion, the heat-receiving element being configured to protect the fusion element.

12. The heating device as claimed in claim 11, characterized in that, The fuse includes a fuse located within the hollow portion and a lead connecting the fuse and the electrical connection mechanism. The lead is configured to switch the electrical connection mechanism from an on-state to an off-state after the fuse blows.

13. The heating device as claimed in claim 11, characterized in that, Along the length of the fuse element, the centerline of the fuse element coincides with or tends to coincide with the centerline of the receiving portion.

14. The heating device of any one of claims 1 to 5, wherein, The heating device further includes a base having a first surface and a second surface disposed opposite to each other. The heating mechanism and the fuse mechanism are mounted on the first surface of the base, and the electrical connection mechanism is mounted on the second surface of the base.

15. The heating device of claim 14, wherein, The electrical connection mechanism includes a connecting post mounted on the second surface, and the connecting post is electrically connected to the heating element.

16. A food delivery system characterized by, The device includes a frame, a plate conveyor mounted on the frame, and a heating device. The frame has a cavity for holding liquid. The plate conveyor is located at the opening of the cavity. The heating device is located inside the cavity and is configured to heat the liquid inside the cavity when in operation. The heating device is the heating device as described in any one of claims 1 to 15.

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