An energy-saving heated lunch box

Abstract

This utility model relates to the field of daily tableware technology, and discloses an energy-saving heated lunch box, including a box body and a lid connected to the box body. The top of the box body has an opening that extends downward to form a receiving cavity, and the side wall of the opening has an outwardly extending horizontal edge. The lid includes a fixing plate with a light-emitting hole. A far-infrared lamp holder and a control board are fixedly mounted on the top edge of the light-emitting hole. A far-infrared lamp tube is fixedly mounted inside the far-infrared lamp holder, and the far-infrared lamp tube is electrically connected to the control board. The control board is electrically connected to a power supply socket via a switch. This heated lunch box can directly heat the food in the receiving cavity through non-conductive infrared radiation generated by the infrared lamp tube, which can effectively reduce heat loss. Compared with existing heat conduction heated lunch boxes, it has higher heating efficiency and shorter heating time, effectively solving the problems in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of daily tableware technology, and in particular to an energy-saving heated lunch box. Background Technology

[0002] A lunchbox is a portable container used for temporarily holding food, typically for taking meals out, such as to work, school, picnics, or travel. Taking an office worker bringing lunch to work as an example, a traditional lunchbox is simply a lidded container; once the food is at the destination, it needs to be heated using additional heating equipment. This reliance on heating equipment makes it unsuitable for picnics or travel, significantly limiting its usability. Furthermore, because the food in a traditional lunchbox has cooled for a long time, reheating it takes a considerable amount of time, and with heating equipment often being used collectively, users often have to wait in long queues.

[0003] To address the aforementioned issues, Chinese utility model patent CN205568136U discloses a novel multifunctional insulated lunchbox for high school students. This lunchbox includes a main body, a sealing lid, a snap fastener, a splash guard, a spoon storage box, an intelligent control device, a sensor, a handle groove, a handle, a vent, an inner liner, a heating base, a food container, a lunchbox, and a charging port. The sealing lid is attached to the upper part of the main body by the snap fastener; the spoon storage box is embedded in the sealing lid; the intelligent control device is located on the upper-middle part of one side of the main body; and the sensor is located on... The inner liner is electrically connected to an intelligent control device; the handle is located inside the handle groove, and the vent is located in the middle of the sealing lid; a heating base is located at the bottom of the inner liner, and the food container and lunchbox are located inside the inner liner; the charging port is located at the bottom of one side of the lunchbox body. The intelligent control device includes an outer shell, a display screen, a time adjustment knob, an indicator light, a control chip, and a switch. The display screen is embedded in the upper part of the outer shell; the time adjustment knob is located below the display screen; the control chip is electrically connected to the display screen inside the outer shell; and the indicator light is connected to the switch via a wire. This lunchbox can heat the food container and lunchbox at any time via the heating base, effectively solving the problem of existing lunchboxes requiring other heating devices and thus being limited by usage scenarios. However, during use, we found that because the heating base of this lunchbox is used, its heating effect is poor, the heat conduction time is too long, therefore it requires a long heating time and consumes more energy. Summary of the Invention

[0004] The purpose of this utility model is to develop an energy-saving heated lunch box, and the specific technical solution is as follows:

[0005] This utility model provides an energy-saving heated lunch box, including a box body and a lid connected to the box body. The top of the box body is provided with an opening, which extends downward to form a receiving cavity. The side wall of the opening is provided with an outer edge extending horizontally outward. The lid includes a fixing plate, and the fixing plate is provided with a light-emitting hole. A far-infrared lamp fixing base and a control board are fixedly provided on the top edge of the light-emitting hole. A far-infrared lamp tube is fixedly provided in the far-infrared lamp fixing base. The far-infrared lamp tube is electrically connected to the control board. The control board is electrically connected to a power connection socket through a switch.

[0006] Optionally, the far-infrared lamp holder is a trumpet-shaped structure with an open bottom, the far-infrared lamp tube is fixed to the inner side wall of the far-infrared lamp holder, and a quartz glass cover plate is fixedly connected to the bottom of the far-infrared lamp holder.

[0007] Optionally, the top of the far-infrared lamp mounting base is provided with a stainless steel heat insulation plate.

[0008] Optionally, the material of the far-infrared lamp holder is quartz glass.

[0009] Optionally, a side plate is provided on the outer side of the fixing plate of the box cover, the side plate forming the box cover cavity, and a fixing seat mounting post and a temperature measuring hole post are also provided on the fixing plate; a fixing ear is provided on the outer side wall of the far-infrared lamp fixing seat, the fixing ear is threadedly fixed to the fixing seat mounting post by screws, a temperature measuring tube is snapped into the temperature measuring hole post, and the temperature measuring tube is electrically connected to the control board.

[0010] Optionally, a cover plate is fixed to the top of the side panel of the box cover, a magnetic iron sheet is provided at the bottom of the cover plate, a magnet mounting post corresponding to the position of the magnetic iron sheet is provided on the fixed plate, a magnet is installed on the magnet mounting post, and the cover plate is magnetically connected to the magnet through the magnetic iron sheet.

[0011] Optionally, the cover plate is provided with a control panel window, and a control panel is installed in the control panel window. The control panel is electrically connected to the control board.

[0012] Optionally, a sensor switch is fixedly connected to the bottom of the control panel, and the sensor switch is electrically connected to the control board.

[0013] Optionally, a snap-fit ​​plate is provided at the bottom of the side panel, and an arc-shaped snap protrusion is provided on the inner side wall of the snap-fit ​​plate. The lid is snapped and connected to the outer edge of the opening side wall of the box body through the arc-shaped snap protrusion.

[0014] Optionally, the side panel of the box cover is provided with a power socket, the rear end of the power socket is fixedly connected to a power connector, the rear end of the power connector is electrically connected to the control board, and the front end of the power connector is plugged into and connected to a power cord.

[0015] The beneficial effects of this utility model are:

[0016] This energy-saving heated lunchbox of the present invention directly heats the food inside the container cavity using infrared radiation generated by an infrared lamp. This heating method effectively reduces heat loss, has higher heating efficiency and shorter heating time compared to existing heat conduction heated lunchboxes, and effectively solves the problems in the prior art. Furthermore, this heating method avoids the problem of scorching at the bottom that may occur with traditional bottom heating methods. To ensure the safety of this heated lunchbox, a quartz glass cover is installed at the bottom of the far-infrared lamp holder. The quartz glass cover ensures the penetration efficiency of infrared radiation, and the cover is also easier to clean, effectively improving the safety of this heated lunchbox.

[0017] Furthermore, this heated lunchbox uses infrared radiation generated by an infrared lamp to directly heat the food inside the cavity through non-conductive heating. This heating method effectively reduces heat loss, has higher heating efficiency and requires less time compared to existing heat conduction heating lunchboxes, and effectively solves the problems in existing technologies. Additionally, this heating method avoids the problem of scorching at the bottom that can occur with traditional bottom-heating methods. To ensure the safety of this heated lunchbox, a quartz glass cover is installed at the bottom of the far-infrared lamp holder. The quartz glass cover ensures the penetration efficiency of infrared radiation, and the lid is also easier to clean, effectively improving the safety of this heated lunchbox.

[0018] Furthermore, this heated lunchbox uses a temperature-sensing tube passing through a temperature-sensing orifice to detect the real-time temperature of the food inside the box, and controls the heating time via a control board. This prevents overheating and further reduces energy waste. Additionally, it also prevents nutrient loss due to prolonged heating. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an energy-saving heated lunch box according to the present invention;

[0020] Figure 2 This is a reference diagram showing the usage state of an energy-saving heated lunch box according to this utility model;

[0021] Figure 3 This is a cross-sectional view of an energy-saving heated lunch box according to the present invention;

[0022] Figure 4 This is an exploded view of the parts of an energy-saving heated lunch box according to this utility model.

[0023] Explanation of icon numbers:

[0024] 01 Box body, 011 Opening, 012 Receiving cavity, 013 Outer edge, 02 Box cover, 021 Fixing plate, 022 Projection hole, 023 Side plate, 024 Box cover cavity, 025 Fixing base mounting post, 026 Temperature measuring hole post, 027 Magnet mounting post, 028 Magnet, 029 Snap-on plate, 030 Arc-shaped snap protrusion, 03 Far-infrared lamp fixing base, 031 Far-infrared lamp tube, 032 Quartz glass cover plate, 033 Stainless steel heat insulation plate, 035 Fixing ear, 05 Control board, 051 Control panel, 052 Signal connection module, 053 Signal transmission module, 06 Switch, 061 Induction switch, 07 Power connection base, 071 Power socket, 08 Temperature measuring tube, 09 Cover plate, 091 Magnetic attracting iron piece, 092 Control panel window.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The following specific examples, in conjunction with the accompanying drawings, illustrate the embodiments of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific examples, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, the use of "and / or" or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies both A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] This utility model provides an energy-saving heated lunch box (hereinafter referred to as the heated lunch box), including a box body 01 and a lid 02 connected to the box body 01. The top of the box body 01 is provided with an opening 011, which extends downward to form a receiving cavity 012 for holding food. The side wall of the opening 011 is provided with an outer edge 013 extending horizontally outward. The lid 02 includes a fixing plate 021, on which a light-emitting hole 022 is provided. A far-infrared lamp fixing seat 03 and a control plate 05 are fixedly provided on the top edge of the light-emitting hole 022. The far-infrared lamp fixing seat 03 is a trumpet-shaped structure with an opening at the bottom. A far-infrared lamp tube 031 is fixedly provided inside the far-infrared lamp fixing seat 03, specifically, the far-infrared lamp tube 031 is fixed to the inner side wall of the far-infrared lamp fixing seat 03. A quartz glass cover plate 032 is fixedly connected to the bottom of the far-infrared lamp fixing seat 03. The far-infrared lamp tube 031 is electrically connected to the control board 05, and the control board 05 is electrically connected to the power connector 07 via the switch 06.

[0030] The infrared lamp consists of a tungsten filament encased in a quartz tube, filled with a special gas. When powered on, the filament heats up, generating infrared radiation. Heat is transferred at the speed of light via electromagnetic waves. This heated lunchbox uses the infrared radiation generated by the lamp to directly heat the food inside the cavity using non-conductive heating. This heating method effectively reduces heat loss, offering higher heating efficiency and shorter heating time compared to existing heat-conducting lunchboxes, effectively solving problems in current technologies. Furthermore, this heating method avoids the scorching problem that can occur with traditional bottom-heating methods. To ensure the safety of this heated lunchbox, a quartz glass cover is installed at the bottom of the far-infrared lamp holder. The quartz glass cover ensures efficient infrared radiation penetration and is also easier to clean, effectively improving the safety of the heated lunchbox.

[0031] In one embodiment, the far-infrared lamp holder is made of quartz glass, and a stainless steel heat insulation plate 033 is provided on the top of the far-infrared lamp holder 03. The bottom surface of the stainless steel heat insulation plate has a reflective layer. This stainless steel heat insulation plate not only blocks the infrared radiation emitted by the infrared lamp tube towards the top of the infrared lamp holder, but also reflects the infrared radiation in that direction to the bottom of the infrared lamp holder, and projects it onto the food inside the container cavity through the light projection hole, further increasing the energy efficiency of this heated lunch box.

[0032] In one embodiment, a side plate 023 is provided on the outer side of the fixing plate 021 of the lid 02, forming a lid cavity 024. The fixing plate 021 also has a fixing seat mounting post 025 and a temperature measuring hole post 026. A fixing ear 035 is provided on the outer wall of the far-infrared lamp fixing seat 03, and the fixing ear 035 is threadedly connected to the fixing seat mounting post 025 by screws (not shown). A temperature measuring tube 08 is snapped into the temperature measuring hole post 026, and the temperature measuring tube 08 is electrically connected to the control board 05. The temperature measuring tube can pass through the temperature measuring hole post to detect the real-time temperature of the food inside the box cavity, and the control board controls the heating time of the food, avoiding overheating and further reducing energy waste in this heated lunch box. Additionally, it can also prevent nutrient loss due to prolonged heating.

[0033] To facilitate the assembly and maintenance of this heated lunch box, in one embodiment, a cover plate 09 is fixed to the top of the side plate 023 of the lid 02, and a magnetic iron piece 091 is provided at the bottom of the cover plate 09. A magnet mounting post 027 corresponding to the position of the magnetic iron piece 091 is provided on the fixing plate 021, and a magnet 028 is installed on the magnet mounting post 027. The cover plate 09 is magnetically connected to the magnet through the magnetic iron piece, which facilitates the opening and installation of the cover plate.

[0034] To facilitate the operation of this heated lunch box, in one embodiment, a control panel window 092 is provided on the cover plate 09. A control panel 051 is installed inside the control panel window 092. The control panel 051 is electrically connected to the control board 05. A sensor switch 061 is fixedly connected to the bottom of the control panel 051, and the sensor switch 061 is electrically connected to the control board 05. The control panel can also display the real-time temperature of the food in the container cavity as measured by the temperature measuring tube.

[0035] To improve the safety and ease of operation of the connection between the lid and the box body, in one embodiment, a snap-fit ​​plate 029 is provided at the bottom of the side plate 023, and an arc-shaped snap protrusion 030 is provided on the inner side wall of the snap-fit ​​plate 029. The lid is snapped and connected to the outer edge 013 of the opening side wall of the box body through the arc-shaped snap protrusion 030.

[0036] In one embodiment, the side plate 023 of the cover 02 is provided with a power socket 071. The rear end of the power socket 071 is fixedly connected to a power connector 07. The rear end of the power connector 07 is electrically connected to the control board 05. The front end of the power connector 07 is plugged into a power cord (not shown).

[0037] In addition, the control board 05 is equipped with a signal connection module 052 and a signal transmission module 053. The signal connection module and the signal transmission module are connected to an external connection device (such as a smartphone) to control the heated lunch box.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. 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 essence and scope of the technical solutions of this utility model.

Claims

1. An energy-saving heating lunch box, comprising a box body and a box cover connected with the box body, characterized in that, The top of the box has an opening that extends downward to form a receiving cavity, and the sidewall of the opening has an outer edge that extends horizontally outward. The box cover includes a fixing plate with a light-emitting hole. A far-infrared lamp holder and a control board are fixedly mounted on the top edge of the light-emitting hole. A far-infrared lamp tube is fixedly mounted inside the far-infrared lamp holder. The far-infrared lamp tube is electrically connected to the control board, and the control board is electrically connected to a power connector via a switch.

2. The energy-saving heated lunch box according to claim 1, characterized in that, The far-infrared lamp holder is a trumpet-shaped structure with an open bottom. The far-infrared lamp tube is fixed to the inner side wall of the far-infrared lamp holder, and a quartz glass cover plate is fixedly connected to the bottom of the far-infrared lamp holder.

3. The energy-saving heated lunch box according to claim 2, characterized in that, The top of the far-infrared lamp mounting base is equipped with a stainless steel heat insulation plate.

4. The energy-saving heated lunch box according to claim 2, characterized in that, The far-infrared lamp mounting base is made of quartz glass.

5. The energy-saving heated lunch box according to claim 1, characterized in that, The outer side of the fixing plate of the box cover is provided with a side plate, which forms the box cover cavity. The fixing plate is also provided with a fixing seat mounting post and a temperature measuring hole post. The outer side wall of the far-infrared lamp fixing seat is provided with a fixing ear, which is threadedly connected to the fixing seat mounting post by screws. The temperature measuring hole post is snapped into the temperature measuring tube, which is electrically connected to the control board.

6. The energy-saving heated lunch box according to claim 5, characterized in that, A cover plate is fixed to the top of the side panel of the box cover, and a magnetic iron sheet is provided at the bottom of the cover plate. A magnet mounting post corresponding to the position of the magnetic iron sheet is provided on the fixed plate, and a magnet is installed on the magnet mounting post. The cover plate is magnetically connected to the magnet through the magnetic iron sheet.

7. The energy-saving heated lunch box according to claim 6, characterized in that, The cover plate is provided with a control panel window, and a control panel is installed inside the control panel window. The control panel is electrically connected to the control board.

8. The energy-saving heated lunch box according to claim 7, characterized in that, A sensor switch is fixedly connected to the bottom of the control panel, and the sensor switch is electrically connected to the control board.

9. The energy-saving heated lunch box according to claim 5, characterized in that, The bottom of the side panel is provided with a buckle plate, and the inner side wall of the buckle plate is provided with an arc-shaped buckle protrusion. The lid is connected to the outer edge of the opening side wall of the box body by the arc-shaped buckle protrusion.

10. The energy-saving heated lunch box according to claim 5, characterized in that, The side panel of the box cover is provided with a power socket. The rear end of the power socket is fixedly connected to a power connector. The rear end of the power connector is electrically connected to the control board, and the front end of the power connector is plugged into and connected to the power cord.

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