A new large rotary dining table
By installing zoned heating and insulation devices on large rotating dining tables and using conductive slip rings for power, the problems of rapid food temperature drop and environmental pollution have been solved, achieving precise temperature control of food and improving the dining environment.
Patent Information
- Application Number
- CN202521958985.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-11
AI Technical Summary
Traditional large rotating dining tables cause food to cool down rapidly in cold environments, and burning solid wax can pollute the dining environment, affecting the diners' experience.
Design a large rotating dining table with a wooden circular tabletop, a rotating device and support frame underneath, and a heating and heat preservation device embedded in the tabletop. It is connected to an external power source through a conductive slip ring to achieve zoned heating and heat preservation, avoiding the use of solid wax.
It enables zoned heating and heat preservation of food, avoids pollution caused by the combustion of solid wax, and improves the comfort and safety of the dining environment.
Smart Images
Figure CN224671072U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of large dining table technology, and in particular to a large rotating dining table that can realize heating and heat preservation functions. Background Technology
[0002] Traditional large rotating dining tables, such as those made of glass in hotel banquet halls, have a diameter of 1.8 meters or more and a single function: serving dishes and rotating to allow diners seated around the edge to easily reach the food. However, these tables are not ideal for diners in winter or cold climates. When food is placed on the rotating table, the food cools rapidly in cold environments due to the extended dining time, sometimes even causing oil to clump and turn white, resulting in a poor taste and requiring reheating. Currently, restaurants typically use burning solid wax under the dishes to maintain food temperature on large rotating tables. However, the burning of this solid wax produces a large amount of carbon dioxide, which deteriorates the air quality and negatively impacts the overall dining experience. Therefore, there is an urgent need to design a new type of large rotating dining table that can keep food warm without burning solid wax and maintain a comfortable dining environment. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a new type of large rotating dining table that can keep food warm, does not require burning solid wax, and maintains a comfortable dining environment.
[0004] The technical solution adopted by this utility model is a novel large rotating dining table, including a wooden circular tabletop with a diameter ≥1.8m. A rotating device and a support frame are sequentially arranged below the tabletop. The support frame is placed on the ground, and the rotating device is mounted on the support frame. The tabletop is mounted on the rotating device and rotates. Several separated slots are provided on the tabletop, and a heating and heat preservation device is adapted to each slot. The heating and heat preservation device has several heat preservation zones and a heating zone. Several wiring channels, matching the number of slots, are provided on the lower side of the tabletop. A conductive slip ring is located at the center of the lower side of the tabletop, and a power cord with a plug is connected to the lower part of the conductive slip ring. Several heating and heat preservation devices are connected to the upper part of the conductive slip ring via wires arranged in the wiring channels, enabling external power supply.
[0005] Furthermore, the heating and heat preservation device includes a panel with several heat preservation areas and heating areas arranged on the panel. A heating element is arranged below the heat preservation area, and a heating device is embedded below the heating area. A touch control switch is arranged on one side of each of the heat preservation areas and the heating area. The touch control switch is equipped with power adjustment levels and a power button. A heat preservation temperature sensor is arranged on one side of the heating element, and a heating temperature sensor is arranged in the heating device. Both the heat preservation temperature sensor and the heating temperature sensor are electrically connected to the touch control switch.
[0006] Furthermore, the heating element is a PTC heating element, and the heating device is an electric ceramic stove, an induction cooker, or a microwave oven.
[0007] Furthermore, the rotating device includes a fixed base, and the fixed base has an annular rotating concave edge on its periphery. A rotating top ring is fitted on the rotating concave edge, and a plurality of balls are arranged between the rotating top ring and the rotating concave edge. The rotating top ring rotates on the rotating concave edge through the plurality of balls. The tabletop support is arranged on the rotating top ring, and the conductive slip ring is arranged at the center position of the fixed base.
[0008] Furthermore, an internal rack is provided on the inner annular surface of the rotating top ring, a servo motor is provided on the fixed base, a drive gear is provided on the output shaft of the servo motor, the outer teeth of the drive gear mesh with the inner teeth of the internal rack, and the servo motor is electrically connected to an external power source via a power switch.
[0009] Furthermore, the conductive slip ring includes a stator and a rotor that rotatably engages with the stator. The stator has a cavity for accommodating the rotor. Bearings are fitted at both ends of the rotor, and the rotor is mounted in the cavity of the stator through the bearings. A conductive layer is provided on the outer wall of the rotor. Several conductive brushes are provided on the inner wall of the stator via springs. The conductive brushes are in contact with the conductive layer. Several output wires are led out from the upper end of the rotor. The inner end of the output wires is in contact with the conductive layer, and the other end extends out of the rotor and connects to the wires in the wiring groove. An input wire is provided at the end of the stator. One end of the input wire is in contact with the conductive brush, and the other end extends from below the stator to the outside of the stator and is connected to a power cord with a plug.
[0010] Furthermore, each of the wiring channels extends from the recess to the center of the desktop on the lower side of the desktop.
[0011] Furthermore, each of the heating and heat preservation devices is provided with four heat preservation zones and one heating zone.
[0012] The beneficial effects of this utility model are as follows: This utility model includes a wooden circular tabletop with a diameter of ≥1.8m. A rotating device and a support frame are sequentially arranged below the tabletop. The support frame is set on the ground, and the rotating device is set on the support frame. The tabletop is set on the rotating device and rotates. Several separated grooves are provided on the tabletop, and a heating and heat preservation device is adapted in each groove. The heating and heat preservation device is provided with several heat preservation zones and a heating zone. Several wiring grooves are provided on the lower side of the tabletop, corresponding to the number of grooves. A conductive slip ring is set at the center of the lower side of the tabletop. A power cord with a plug is connected to the lower part of the conductive slip ring. Several heating and heat preservation devices are connected to the upper part of the conductive slip ring through wires set in several wiring grooves to achieve external power supply. The problem of food cooling is solved through zoned heating and heat preservation functions, while avoiding the use of solid wax to pollute the environment. It has the advantages of achieving zoned heating and heat preservation, avoiding the use of solid wax to pollute the environment, and improving dining comfort. Attached Figure Description
[0013] Figure 1 This is a simplified structural diagram of the system of this utility model; Figure 2 This is a simplified structural diagram of the desktop from a top-down view. Figure 3 This is a simplified structural diagram of the heating and heat preservation device after it has been assembled onto the tabletop, viewed from above. Figure 4 This is a simplified structural diagram of the desktop viewed from below. Figure 5 This is a simplified cross-sectional view of the desktop and the rotating device after assembly. Figure 6 yes Figure 5 A magnified structural diagram of part A in the middle; Figure 7 This is a simplified structural diagram of the outer contour of the conductive slip ring; Figure 8 This is a simplified cross-sectional view of the conductive slip ring. Detailed Implementation
[0014] like Figures 1 to 8As shown, this utility model discloses a large rotating dining table, comprising a wooden circular tabletop 1 with a diameter ≥ 1.8m. A rotating device 2 and a support frame 3 are sequentially arranged below the tabletop 1. The support frame 3 is placed on the ground, and the rotating device 2 is mounted on the support frame 3. The tabletop 1 is mounted on the rotating device 2 and rotates. Several separated slots 11 are provided on the tabletop 1. A heating and heat preservation device 4 is adapted to each slot 11. The heating and heat preservation device 4 has several heat preservation zones 41 and a heating zone 42. Several wiring channels 12, matching the number of slots 11, are provided on the lower side of the tabletop 1. A conductive slip ring 5 is located at the center of the lower side of the tabletop 1. A power cord with a plug is connected to the lower part of the conductive slip ring 5. Several heating and heat preservation devices 4 are connected to the upper part of the conductive slip ring 5 via wires 7 arranged in the wiring channels 12, enabling external power supply. A recessed groove is a series of recessed structures created on a desktop. These grooves can be machined into rectangular, circular, elliptical, or other shapes and are used to secure heating and insulation devices and restrict their movement. A cable tray is a cable channel created on the underside of the desktop. It can be formed by creating a groove and then covering it with an insulating cover plate. This channel is used to centrally manage wires and prevent interference with rotating parts.
[0015] The heating and heat preservation device 4 includes a panel 43. Several heat preservation zones 41 and heating zones 42 are arranged on the panel 43. A heating element is disposed below each heat preservation zone 41, and a heating device is embedded below each heating zone 42. A touch-sensitive control switch 44 is provided on one side of each of the heat preservation zones 41 and heating zones 42. The touch-sensitive control switch 44 has power adjustment levels and a power button. A heat preservation temperature sensor is disposed on one side of the heating element, and a heating temperature sensor is disposed in the heating device. Both the heat preservation temperature sensor and the heating temperature sensor are electrically connected to the touch-sensitive control switch 44. The heating element is a PTC heating element, and the heating device is an electric ceramic cooker, induction cooker, or microwave oven. The heating device can perform secondary heating of food, specifically using an induction cooker, electric ceramic cooker, or microwave oven. The touch-sensitive control switch operates based on capacitive sensing principles, specifically using a capacitive touch chip, allowing the user to adjust the power level by sliding or tapping. The insulation temperature sensor monitors temperature changes in the insulation zone, specifically using an NTC thermistor, and provides real-time temperature data feedback to the control circuit. The heating temperature sensor monitors temperature changes in the heating zone, specifically using a K-type thermocouple, measuring the temperature of the high-temperature area through thermoelectric electromotive force. The PTC heating element has a positive temperature coefficient; its resistance increases with temperature, and it automatically reduces power when the temperature reaches a set threshold. This can be achieved using barium titanate semiconductor ceramic material, whose resistance rises sharply after the temperature exceeds the Curie point, thus achieving automatic temperature control. The ceramic cooktop uses resistance wire for heating and transfers heat energy through infrared radiation, specifically using a combination of nickel-chromium alloy resistance wire and a microcrystalline glass panel, suitable for heating metal or non-metal containers. The induction cooktop uses electromagnetic induction to generate eddy currents in ferromagnetic cookware, specifically using a combination of a high-frequency coil and an IGBT power module, effective only for magnetically conductive metal containers. The microwave oven uses halogen or carbon tubes to emit infrared light for heating, specifically using a quartz tube-encapsulated heating element and a reflector combination, featuring rapid heating characteristics.
[0016] The rotating device 2 includes a fixed base 21, with an annular rotating concave rib 211 surrounding the fixed base 21. A rotating top ring 212 is fitted onto the rotating concave rib 211, and a plurality of ball bearings 213 are arranged between the rotating top ring 212 and the rotating concave rib 211. The rotating top ring 212 rotates on the rotating concave rib 211 via the ball bearings 213. The tabletop 1 is supported on the rotating top ring 212, and the conductive slip ring 5 is located at the center of the fixed base 21. The fixed base can be cast from metal or made of wood with the annular rotating concave rib on it, providing track support for the rotating device 2. The rotating concave rib has an annular recessed structure, specifically formed by CNC machining into a continuous annular groove, used to limit the radial displacement of the rotating top ring and guide its movement along a predetermined trajectory. The rotating top ring and the rotating concave rib can be made of aluminum alloy, and the ball bearings form rolling friction contact with the rotating concave rib, thereby reducing rotational resistance. Among them, the ball bearings achieve rolling friction between the rotating top ring and the rotating concave edge. Specifically, they can be made of stainless steel and embedded between the rotating concave edge and the rotating top ring in an equally spaced manner, reducing friction loss through rolling contact.
[0017] An internal rack 2121 is provided on the inner annular surface of the rotating top ring 212. A servo motor 6 is provided on the fixed base 21. A drive gear 61 is provided on the output shaft of the servo motor 6. The external teeth of the drive gear 61 mesh with the internal teeth of the internal rack 2121. The servo motor 6 is electrically connected to an external power source via a power switch. When the servo motor is powered on, the drive gear drives the rotating top ring to rotate circumferentially relative to the fixed base through meshing with the internal rack. Due to the precise transmission ratio of the gear transmission, the rotational speed can be controlled in stages by adjusting the servo motor speed. The rotational motion of the rotating top ring is smoothly transmitted to the desktop through a ball bearing structure, enabling the desktop to rotate at a uniform or variable speed.
[0018] The conductive slip ring 5 includes a stator 51 and a rotor 52 that rotatably engages with the stator 51. The stator 51 has a cavity 511 for accommodating the rotor 52. Bearings 53 are fitted at both ends of the rotor 52. The rotor 52 is mounted in the cavity 511 of the stator 51 through the bearings 53. A conductive layer is provided on the outer wall of the rotor 52. Several conductive brushes 54 are provided on the inner wall of the stator 51 by springs. The conductive brushes 54 are in contact with the conductive layer. Several output wires 521 are led out from the upper end of the rotor 52. The inner end of the output wires 521 is in contact with the conductive layer, and the other end extends out of the rotor 52 and is connected to the wire in the wiring groove 12. An input wire 512 is provided at the end of the stator 51. One end of the input wire 512 is in contact with the conductive brush 54, and the other end extends out from below the stator 51 and is connected to a power cord with a plug.
[0019] The stator is connected to an external power source via input wires. Conductive brushes, under the action of springs, maintain contact with the rotor's conductive layer. Current is transmitted through the conductive layer to the rotor's output wires, and then through wires in the wiring slots to power the heating and insulation devices. The rotor rotates within the stator cavity via bearings. When the table rotates, the rotor rotates synchronously with the table, while the stator remains stationary. The sliding contact between the conductive brushes and the conductive layer maintains circuit continuity and prevents wire tangling.
[0020] Each of the wiring channels 12 extends from the recess 11 to the center of the tabletop 1 on the lower side of the table. Each heating and heat preservation device 4 has four heat preservation zones 41 and one heating zone 42. The layout of the wiring channels extending from the recess to the center allows the wires of each heating and heat preservation device to connect to the conductive slip ring along the shortest path. The wires 7 are fixed and hidden within the wiring channels to prevent tangling or wear caused by tabletop rotation. The centralized wiring design at the center further simplifies the connection structure between the conductive slip ring and the external power supply, ensuring that multiple heating and heat preservation devices can be independently powered through a unified power input interface. The four heat preservation zones and one heating zone are integrated into the panel of the same heating and heat preservation device, with the heat preservation zones evenly distributed within the panel. When the plate is placed in the heat preservation zone, the temperature sensor monitors the temperature in real time and feeds it back to the control switch, allowing the user to adjust the heat preservation power as needed. When food needs to be heated, the plate can be moved to the heating zone for rapid heating by the heating device. This layout design allows a single device to simultaneously perform heat preservation and heating functions, and the clear zoning avoids operational confusion.
[0021] Through the above technical solution, this application achieves precise control of food temperature. Users can adjust the heat preservation or heating intensity according to different meal requirements, while eliminating combustion pollution and improving the safety and comfort of the dining environment.
[0022] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A novel large rotating dining table, comprising a wooden circular tabletop (1) with a diameter ≥ 1.8m, wherein a rotating device (2) and a support frame (3) are sequentially arranged below the tabletop (1), the support frame (3) is placed on the ground, the rotating device (2) is mounted on the support frame (3), and the tabletop (1) is mounted on the rotating device (2) and rotates, characterized in that: A plurality of separated slots (11) are provided on the desktop (1). A heating and heat preservation device (4) is adapted in each slot (11). The heating and heat preservation device (4) is provided with a plurality of heat preservation areas (41) and a heating area (42). A plurality of wiring channels (12) are provided on the lower side of the desktop (1) in the same number as the slots (11). A conductive slip ring (5) is provided at the center of the lower side of the desktop (1). A power cord with a plug is connected to the lower part of the conductive slip ring (5). A plurality of heating and heat preservation devices (4) are connected to the upper part of the conductive slip ring (5) through wires (7) provided in a plurality of wiring channels (12) to achieve power supply from the outside.
2. The novel large rotating dining table according to claim 1, characterized in that: The heating and heat preservation device (4) includes a panel (43), on which a plurality of heat preservation areas (41) and heating areas (42) are provided. A heating element is provided below the heat preservation area (41), and a heating device is embedded below the heating area (42). A touch control switch (44) is provided on one side of each of the plurality of heat preservation areas (41) and heating areas (42). The touch control switch (44) is provided with power increment / decrement levels and a switch button. A heat preservation temperature sensor is provided on one side of the heating element, and a heating temperature sensor is provided in the heating device. Both the heat preservation temperature sensor and the heating temperature sensor are electrically connected to the touch control switch (44).
3. A novel large rotating dining table according to claim 2, characterized in that: The heating element is a PTC heating element, and the heating device is an electric ceramic stove, an induction cooker, or a microwave oven.
4. A novel large rotating dining table according to claim 1, characterized in that: The rotating device (2) includes a fixed base (21), and an annular rotating concave ridge (211) is provided around the fixed base (21). A rotating top ring (212) is fitted on the rotating concave ridge (211). A plurality of balls (213) are provided between the rotating top ring (212) and the rotating concave ridge (211). The rotating top ring (212) rotates on the rotating concave ridge (211) through the plurality of balls (213). The tabletop (1) is supported on the rotating top ring (212). The conductive slip ring (5) is located at the center of the fixed base (21).
5. A novel large rotating dining table according to claim 4, characterized in that: An internal rack (2121) is provided on the inner annular surface of the rotating top ring (212), a servo motor (6) is provided on the fixed base (21), a drive gear (61) is provided on the output shaft of the servo motor (6), the outer teeth of the drive gear (61) mesh with the inner teeth of the internal rack (2121), and the servo motor (6) is electrically connected to an external power source through a power switch.
6. A novel large rotating dining table according to claim 1, characterized in that: The conductive slip ring (5) includes a stator (51) and a rotor (52) that rotatably engages with the stator (51). The stator (51) has a cavity (511) for accommodating the rotor (52). Bearings (53) are fitted at both ends of the rotor (52). The rotor (52) is mounted in the cavity (511) of the stator (51) via the bearings (53). A conductive layer is provided on the outer wall of the rotor (52). Several conductive brushes (54) are provided on the inner wall of the stator (51) via springs. 54) The rotor (52) has several output wires (521) leading out from the upper end of the rotor (52). The inner end of the output wire (521) is in contact with the conductive layer, and the other end extends out of the rotor (52) and is connected to the wire in the wiring groove (12). The stator (51) has an input wire (512) at the end. One end of the input wire (512) is in contact with the conductive brush (54), and the other end extends out from the bottom of the stator (51) to the outside of the stator (51) and is connected to the power cord with plug.
7. A novel large rotating dining table according to claim 1, characterized in that: Each of the said cable trays (12) extends from the groove (11) to the center of the desktop (1) on the lower side of the desktop (1).
8. A novel large rotating dining table according to claim 1, characterized in that: Each of the heating and heat preservation devices (4) is provided with four heat preservation zones (41) and one heating zone (42).