A heating lunch box

Abstract

The utility model discloses a kind of heating lunch boxes, including lunch box shell, the inside of lunch box shell is equipped with lunch box inner pot, the lower portion of lunch box inner pot is equipped with high-pressure heating body, low-pressure heating body distributed along horizontal direction, the high-pressure heating body, the low-pressure heating body is in close contact with the bottom surface of lunch box inner pot, lunch box body is placed in the inside of lunch box inner pot, the upper portion of lunch box shell is equipped with lunch box cover that can be opened;The inside of lunch box shell is also equipped with first PCB board, the high-pressure heating body, the low-pressure heating body with first PCB board is electrically connected, first PCB board and socket pin, DC plug, second PCB board are electrically connected, socket pin, DC plug passes through the side wall of lunch box shell;The lower portion of lunch box shell is equipped with battery compartment, the inside of battery compartment is equipped with battery.The utility model considers lunch and dinner heat preservation and heating under multiple application scenarios, such as household, outdoor, vehicle etc.

Description

Technical Field

[0001] This utility model relates to the field of heated lunch boxes, and in particular to a heated lunch box. Background Technology

[0002] A heated lunchbox, also known as an electric lunchbox, is a portable container that can keep food warm and heat it. Currently available heated lunchboxes are generally divided into two types: household direct-plug type and outdoor rechargeable type. Due to the lack of a connection port compatible with automotive power sources, they cannot be used in automotive scenarios. Utility Model Content

[0003] The purpose of this utility model is to provide a heated lunch box to solve the technical problem that existing heated lunch boxes cannot be used in automotive scenarios due to the lack of a connection port adapted to automotive power supply.

[0004] To achieve the above objectives, the present invention provides a heated lunchbox, comprising a lunchbox shell, an inner pot inside the lunchbox shell, a high-pressure heating element and a low-pressure heating element arranged horizontally below the inner pot, the high-pressure heating element and the low-pressure heating element being in close contact with the bottom surface of the inner pot, a lunchbox body being placed inside the inner pot, and an openable lunchbox lid being provided on the top of the lunchbox shell; a first PCB board is also provided inside the lunchbox shell, the high-pressure heating element and the low-pressure heating element being electrically connected to the first PCB board, the first PCB board being electrically connected to a socket pin, a DC plug and a second PCB board, the socket pin and the DC plug passing through the side wall of the lunchbox shell; a battery compartment is provided at the bottom of the lunchbox shell, a battery is provided inside the battery compartment, the battery being electrically connected to a third PCB board and a fourth PCB board, the third PCB board being provided with a power charging port, the fourth PCB board being provided with a probe, the power charging port passing through the side wall of the battery compartment, and the fourth PCB board being electrically connected to the second PCB board through the probe.

[0005] Furthermore, the bottom of the lunchbox shell is provided with a base plate, the first PCB board, the socket pin, and the DC plug are disposed between the base plate and the inner pot of the lunchbox, and the second PCB board is disposed on the base plate.

[0006] Furthermore, a fifth PCB board is provided between the base plate and the inner pot of the lunch box. The fifth PCB board is provided with a display component, which passes through the side wall of the lunch box shell. The fifth PCB board is electrically connected to the first PCB board.

[0007] Furthermore, the bottom of the lunchbox shell is detachably installed from the top of the battery compartment, and the top of the battery compartment is provided with a detachable battery compartment cover, which is located below the bottom plate. The fourth PCB board is disposed at the bottom of the battery compartment cover.

[0008] Furthermore, an NTC temperature sensor is also provided below the inner pot of the lunch box. The NTC temperature sensor is in close contact with the bottom surface of the inner pot of the lunch box and is electrically connected to the first PCB board. The NTC temperature sensor can be used to sense the temperature of the inner pot of the lunch box.

[0009] Furthermore, a sixth PCB board is provided inside the battery compartment. The sixth PCB board is equipped with a power button that passes through the side wall of the battery compartment. The sixth PCB board is electrically connected to the battery.

[0010] Furthermore, the top of the lunchbox body is provided with an openable lid, the outer top surface of the lid is provided with an annular step, and the inner top surface of the lunchbox lid is provided with an annular baffle, the annular baffle pressing down on the annular step.

[0011] Furthermore, a sealing ring is provided at the bottom edge of the lid, and the top opening edge of the lunch box body and the bottom edge of the lid are sealed together by the sealing ring. A sealing plug is provided in the through hole in the middle of the lid.

[0012] Furthermore, one or more raised outer shells are provided between the top edge of the lunch box shell and the bottom edge of the lunch box lid, and the upper and lower edges of the raised outer shells are respectively fastened to the bottom edge of the lunch box lid and the top edge of the lunch box shell by latches; one or more lunch box bodies are provided between the inner pot of the lunch box and the lunch box lid, and two adjacent lunch box bodies are separated by a steaming rack.

[0013] Furthermore, the lunch box lid is provided with a handle and a vent, the heated lunch box is a round lunch box or a square lunch box, the lunch box lid is provided with a groove, and a detachable cover plate is provided above the groove.

[0014] In summary, the technical solution of this utility model has the following beneficial effects: The structure of this utility model is reasonable. (1) By setting a lunchbox shell, the inside of the lunchbox shell is provided with a lunchbox inner pot. The bottom of the lunchbox inner pot is provided with a high-pressure heating element and a low-pressure heating element distributed in a horizontal direction. The high-pressure heating element and the low-pressure heating element are closely attached to the bottom surface of the lunchbox inner pot. The lunchbox body is placed inside the lunchbox inner pot. The top of the lunchbox shell is provided with an openable lunchbox lid. Thus, in a household setting, since the strong current of the household power supply can be transmitted to the high-pressure heating element, the high-pressure heating element can generate high heat and conduct it to the lunchbox inner pot. The lunchbox inner pot then uses the high heat to heat the lunchbox body. The food container is heated to a greater extent, allowing it to heat food and even cook it. In outdoor scenarios, the low-voltage electricity from the built-in battery is transferred to a low-voltage heating element, which then emits a small amount of heat that is conducted to the inner pot. The inner pot then uses this low heat to heat the food container to a lesser extent, keeping it warm. In automotive scenarios, the low-voltage electricity from the vehicle's power supply is transferred to the low-voltage heating element, which continuously emits heat that is conducted to the inner pot. The inner pot then uses this heat to continuously heat the food container, allowing it to heat food. (2) By setting the interior of the lunchbox shell to also have a first PCB board, the high-voltage heating element and the low-voltage heating element are electrically connected to the first PCB board, the first PCB board is electrically connected to the socket pins, the DC plug and the second PCB board, and the socket pins and the DC plug pass through the side wall of the lunchbox shell; thus, in the home scenario, the socket pins can be used to connect to the household power supply, so that the high voltage is transmitted to the high-voltage heating element in sequence through the socket pins and the first PCB board; in the vehicle scenario, the DC plug can be used to connect to the vehicle power supply, so that the low voltage is transmitted to the low voltage heating element in sequence through the DC plug and the first PCB board. In the outdoor scenario, the second PCB board can be used to connect to the battery, so that the low voltage is transmitted to the low voltage heating element in sequence through the second PCB board and the first PCB board. (3) By setting a battery compartment at the bottom of the lunch box shell, a battery is installed inside the battery compartment. The battery is electrically connected to the third PCB board and the fourth PCB board. The third PCB board is equipped with a power charging port, and the fourth PCB board is equipped with a probe. The power charging port passes through the side wall of the battery compartment, and the fourth PCB board is electrically connected to the second PCB board through the probe. Thus, when encountering outdoor scenarios, the weak current of the battery can be transmitted to the low-voltage heating element in sequence through the fourth PCB board, the probe, the second PCB board, and the first PCB board. When the battery needs to be charged, the user can connect to the household power supply through the power charging port after returning home, so that the power can be replenished to the battery in sequence through the power charging port and the third PCB board.As can be seen from the above analysis, the heating lunch box of this utility model can use high power to heat food or even cook rice in a home setting, use low power to keep food warm in an outdoor setting, and use low power to heat food in a vehicle setting. This avoids the situation where the heating lunch box battery may run out of power and cannot heat or keep food warm in an outdoor setting. Therefore, it takes into account the food heat preservation and heating in multiple application scenarios such as home, outdoor, and vehicle use. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural schematic diagram of Embodiment 1 of this utility model; Figure 2 This is a first perspective three-dimensional structural schematic diagram of Embodiment 1 of this utility model; Figure 3 This is a two-dimensional structural schematic diagram of Embodiment 1 of this utility model from a second perspective; Figure 4 This is a three-dimensional structural diagram of the bottom of Embodiment 1 of this utility model from a first perspective; Figure 5 This is a two-dimensional structural diagram of the bottom of Embodiment 1 of this utility model from a second perspective; Figure 6 This is a three-dimensional structural diagram of the battery compartment in Embodiment 1 of this utility model; Figure 7 This is a three-dimensional structural schematic diagram of Embodiment 2 of this utility model; Figure 8 This is a three-dimensional structural diagram of Embodiment 2 of this utility model with the cover plate removed; Explanation of reference numerals in the attached diagram: Lunchbox shell (1), battery compartment (2), lunchbox body (3), lunchbox lid (4), raised outer shell (5), latch (6), steaming rack (7), cover plate (8); inner pot of lunchbox (101), high-voltage heating element (102), low-voltage heating element (103), first PCB board (104), socket pin (105), DC plug (106), second PCB board (107), bottom plate (108), NTC temperature sensor (109), fifth PCB board Board B (110), display component (111); third PCB board (201), fourth PCB board (202), power charging port (203), probe (204), battery compartment cover (205), sixth PCB board (206), power button (207); cover (301), annular step (302), sealing ring (303), sealing plug (304); annular baffle (401), handle (402), vent (403), groove (404). Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, but this does not constitute a limitation on the scope of protection of the present utility model.

[0017] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1 When observing, the observer above is designated as "up" and the observer below as "down." It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below," etc., used in this document to indicate orientation or positional relationships are based on the accompanying drawings and are solely for the purpose of clearly describing this utility model. They do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0018] See Figures 1 to 8This embodiment provides a heated lunchbox, including a lunchbox shell 1. An inner pot 101 is located inside the lunchbox shell 1. A high-pressure heating element 102 and a low-pressure heating element 103 are horizontally distributed below the inner pot 101, and are in close contact with the bottom surface of the inner pot 101. A lunchbox body 3 is placed inside the inner pot 101. An openable lunchbox lid 4 is located on top of the lunchbox shell 1. A first PCB board 104 is also located inside the lunchbox shell 1. The high-pressure heating element 102 and the low-pressure heating element 103 are electrically connected to the first PCB board 104. 04 is electrically connected to the socket pin 105, DC plug 106, and second PCB board 107. The socket pin 105 and DC plug 106 pass through the side wall of the lunch box shell 1. A battery compartment 2 is provided at the bottom of the lunch box shell 1. A battery (not shown in the drawing) is provided inside the battery compartment 2. The battery is electrically connected to the third PCB board 201 and the fourth PCB board 202. A power charging port 203 is provided on the third PCB board 201. A probe 204 is provided on the fourth PCB board 202. The power charging port 203 passes through the side wall of the battery compartment 2. The fourth PCB board 202 is electrically connected to the second PCB board 107 through the probe 204. Function: (1) By setting up a lunchbox shell, the inside of the lunchbox shell is equipped with a lunchbox inner pot, and the bottom of the lunchbox inner pot is equipped with a high-pressure heating element and a low-pressure heating element distributed in a horizontal direction. The high-pressure heating element and the low-pressure heating element are in close contact with the bottom surface of the lunchbox inner pot. The lunchbox body is placed inside the lunchbox inner pot, and the top of the lunchbox shell is equipped with an openable lunchbox lid; thus, in a household setting, since the strong current of the household power supply can be transmitted to the high-pressure heating element, the high-pressure heating element can generate high heat and conduct it to the lunchbox inner pot. The lunchbox inner pot then uses the high heat to heat the lunchbox body to a greater extent, thereby making the lunchbox body... It can heat food and even cook rice. In outdoor scenarios, the weak current from the battery inside the lunchbox can be transferred to the low-voltage heating element, which can then generate a low amount of heat and conduct it to the inner pot of the lunchbox. The inner pot then uses this low heat to heat the lunchbox body to a low degree, thus keeping the food warm. In automotive scenarios, the weak current from the vehicle's power supply can be transferred to the low-voltage heating element, which can then continuously generate heat and conduct it to the inner pot of the lunchbox. The inner pot then uses this heat to continuously heat the lunchbox body, thus heating the food.(2) By setting the interior of the lunchbox shell to also have a first PCB board, the high-voltage heating element and the low-voltage heating element are electrically connected to the first PCB board, the first PCB board is electrically connected to the socket pins, the DC plug and the second PCB board, and the socket pins and the DC plug pass through the side wall of the lunchbox shell; thus, in the home scenario, the socket pins can be used to connect to the household power supply, so that the high voltage is transmitted to the high-voltage heating element in sequence through the socket pins and the first PCB board; in the vehicle scenario, the DC plug can be used to connect to the vehicle power supply, so that the low voltage is transmitted to the low voltage heating element in sequence through the DC plug and the first PCB board. In the outdoor scenario, the second PCB board can be used to connect to the battery, so that the low voltage is transmitted to the low voltage heating element in sequence through the second PCB board and the first PCB board. (3) By setting a battery compartment at the bottom of the lunchbox shell, a battery is installed inside the battery compartment. The battery is electrically connected to the third PCB board and the fourth PCB board. The third PCB board has a power charging port, and the fourth PCB board has a probe. The power charging port passes through the side wall of the battery compartment, and the fourth PCB board is electrically connected to the second PCB board through the probe. Thus, in outdoor scenarios, the weak current of the battery can be transmitted to the low-voltage heating element in sequence through the fourth PCB board, the probe, the second PCB board, and the first PCB board. When the battery needs to be charged, the user can connect to the household power supply through the power charging port after returning home, so that the power can be replenished to the battery in sequence through the power charging port and the third PCB board. As can be seen from the above analysis, the heating lunchbox of this utility model can use strong current to heat food or even cook rice in a home scenario, use weak current to keep food warm in an outdoor scenario, and use weak current to heat food in a vehicle scenario. This avoids the situation where the battery of the heating lunchbox may run out of power and cannot heat or keep food warm in an outdoor scenario. Therefore, it takes into account the food heat preservation and heating in multiple application scenarios such as home, outdoor, and vehicle. High-pressure heating elements and low-pressure heating elements are existing technologies and will not be described in detail here.

[0019] Specifically, the bottom of the lunchbox shell 1 is provided with a base plate 108, a first PCB board 104, a socket pin 105, and a DC plug 106 are disposed between the base plate 108 and the inner pot of the lunchbox 101, and a second PCB board 107 is disposed on the base plate 108. Function: The base plate is provided to facilitate upward support of the inner pot of the lunchbox 101, the first PCB board 104, and other components.

[0020] Specifically, a fifth PCB board 110 is provided between the base plate 108 and the inner pot 101 of the lunch box. A display component 111 is provided on the fifth PCB board 110. The display component 111 passes through the side wall of the lunch box shell 1. The fifth PCB board 110 is electrically connected to the first PCB board 104. Function: The display component 111 can display some operating parameters to help users judge the heating status of the food.

[0021] Specifically, the bottom of the lunchbox shell 1 and the top of the battery compartment 2 are detachably mounted. The top of the battery compartment 2 is provided with a detachable battery compartment cover 205, which is located below the base plate 108. The fourth PCB board 202 is located at the bottom of the battery compartment cover 205. Function: The battery compartment cover 205 facilitates the installation of components inside the battery compartment.

[0022] Specifically, an NTC temperature sensor 109 is also provided below the inner pot 101 of the lunchbox. The NTC temperature sensor 109 is in close contact with the bottom surface of the inner pot 101 and is electrically connected to the first PCB board 104. The NTC temperature sensor 109 can be used to sense the temperature of the inner pot 101. Function: By sensing the temperature of the inner pot 101, the NTC temperature sensor 109 helps the user better control the heating of the food.

[0023] Specifically, the battery compartment 2 also houses a sixth PCB board 206, on which a power button 207 is mounted. The power button 207 passes through the side wall of the battery compartment 2, and the sixth PCB board 206 is electrically connected to the battery. Function: Pressing the power button 207 activates the battery.

[0024] Specifically, the top of the lunchbox body 3 is provided with an openable lid 301. The outer top surface of the lid 301 is provided with an annular step 302, and the inner top surface of the lunchbox lid 4 is provided with an annular baffle 401, which presses down on the annular step 302. Function: The lid 301 can cover the top opening of the lunchbox body 3, and the limiting cooperation between the annular baffle 401 and the annular step 302 can limit the lid 301 and the lunchbox body 3 using the lunchbox lid 4.

[0025] Specifically, a sealing ring 303 is provided at the bottom edge of the lid 301, and the top opening edge of the lunchbox body 3 and the bottom edge of the lid 301 are sealed together by the sealing ring 303. A sealing plug 304 is provided in the through hole in the middle of the lid 301. Function: The sealing ring can improve the sealing effect between the lid 301 and the lunchbox body 3.

[0026] Specifically, one or more raised outer shells 5 are provided between the top edge of the lunchbox shell 1 and the bottom edge of the lunchbox lid 4, arranged vertically. The upper and lower edges of the raised outer shells 5 are secured to the bottom edge of the lunchbox lid 4 and the top edge of the lunchbox shell 1 by latches 6, respectively. One or more lunchbox bodies 3 are provided between the inner pot 101 and the lunchbox lid 4, arranged vertically, with adjacent lunchbox bodies 3 separated by a steaming rack 7. Function: By installing the raised outer shells 5, multiple lunchbox bodies 3 can be placed and heated.

[0027] Specifically, the lunchbox lid 4 is equipped with a handle 402 and a vent 403. The heated lunchbox can be round or square. The lunchbox lid 4 has a groove 404, and a detachable cover plate 8 is located above the groove 404. Functions: The groove 404 can be used to hold tableware, the vent 403 is used to release steam, and the handle 402 can be rotated and lifted upwards. Whether the heated lunchbox is round, square, or any other shape can be chosen according to actual needs.

[0028] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A heated lunchbox, comprising a lunchbox shell (1), characterized in that: The interior of the lunchbox shell (1) is provided with a lunchbox inner pot (101). Below the lunchbox inner pot (101) are horizontally distributed high-pressure heating elements (102) and low-pressure heating elements (103). The high-pressure heating elements (102) and low-pressure heating elements (103) are in close contact with the bottom surface of the lunchbox inner pot (101). The lunchbox body (3) is placed inside the lunchbox inner pot (101). An openable lunchbox lid (4) is provided above the lunchbox shell (1). The interior of the lunchbox shell (1) is also provided with a first PCB board (104). The high-pressure heating elements (102) and low-pressure heating elements (103) are electrically connected to the first PCB board (104). The first PCB board (104) is connected to a socket pin (10). 5) The DC plug (106) and the second PCB board (107) are electrically connected. The socket pin (105) and the DC plug (106) pass through the side wall of the lunch box shell (1). A battery compartment (2) is provided below the lunch box shell (1). A battery is provided inside the battery compartment (2). The battery is electrically connected to the third PCB board (201) and the fourth PCB board (202). A power charging port (203) is provided on the third PCB board (201). A probe (204) is provided on the fourth PCB board (202). The power charging port (203) passes through the side wall of the battery compartment (2). The fourth PCB board (202) is electrically connected to the second PCB board (107) through the probe (204).

2. The heated lunch box according to claim 1, characterized in that: The bottom of the lunch box shell (1) is provided with a base plate (108), the first PCB board (104), the socket pin (105), and the DC plug (106) are disposed between the base plate (108) and the inner pot of the lunch box (101), and the second PCB board (107) is disposed on the base plate (108).

3. A heated lunch box according to claim 2, characterized in that: A fifth PCB board (110) is provided between the base plate (108) and the inner pot of the lunch box (101). A display component (111) is provided on the fifth PCB board (110). The display component (111) passes through the side wall of the lunch box shell (1). The fifth PCB board (110) is electrically connected to the first PCB board (104).

4. A heated lunch box according to claim 2, characterized in that: The bottom of the lunchbox shell (1) is detachably installed with the top of the battery compartment (2). The top of the battery compartment (2) is provided with a detachably installed battery compartment cover (205). The battery compartment cover (205) is located below the base plate (108). The fourth PCB board (202) is located at the bottom of the battery compartment cover (205).

5. A heated lunch box according to claim 1, characterized in that: An NTC temperature sensor (109) is also provided below the inner pot of the lunch box (101). The NTC temperature sensor (109) is in close contact with the bottom surface of the inner pot of the lunch box (101). The NTC temperature sensor (109) is electrically connected to the first PCB board (104). The NTC temperature sensor (109) can be used to sense the temperature of the inner pot of the lunch box (101).

6. A heated lunch box according to claim 1, characterized in that: The battery compartment (2) is further provided with a sixth PCB board (206), and a power button (207) is provided on the sixth PCB board (206). The power button (207) passes through the side wall of the battery compartment (2), and the sixth PCB board (206) is electrically connected to the battery.

7. A heated lunch box according to any one of claims 1 to 6, characterized in that: The top of the lunchbox body (3) is provided with an openable lid (301), the outer top surface of the lid (301) is provided with an annular step (302), and the inner top surface of the lunchbox lid (4) is provided with an annular baffle (401), the annular baffle (401) presses down on the annular step (302).

8. A heated lunch box according to claim 7, characterized in that: The bottom edge of the cover (301) is provided with a sealing ring (303), and the top opening edge of the lunch box body (3) and the bottom edge of the cover (301) are sealed together by the sealing ring (303). The middle through hole of the cover (301) is provided with a sealing plug (304).

9. A heated lunch box according to claim 7, characterized in that: One or more raised outer shells (5) are provided between the top edge of the lunch box shell (1) and the bottom edge of the lunch box lid (4) and are distributed vertically. The upper and lower edges of the raised outer shells (5) are fastened to the bottom edge of the lunch box lid (4) and the top edge of the lunch box shell (1) by latches (6). One or more lunch box bodies (3) are provided between the inner pot (101) of the lunch box and the lunch box lid (4) and are distributed vertically. Two adjacent lunch box bodies (3) are separated by a steaming rack (7).

10. A heated lunch box according to any one of claims 1 to 6, characterized in that: The lunch box lid (4) is provided with a handle (402) and a vent (403). The heated lunch box is a round lunch box or a square lunch box. The lunch box lid (4) is provided with a groove (404). A detachable cover plate (8) is provided above the groove (404).

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