Inductive heating heat preservation complementary food bowl

Abstract

The utility model relates to an inductive heating heat preservation complementary food bowl, and belongs to the technical field of small household appliances. The upper end of the base is open, the metal inner container is located in the opening of the base, an interlayer is arranged in the side wall of the metal inner container, and temperature conducting liquid is arranged in the interlayer; a containing cavity is formed in the lower portion of the base, an induction coil, a control module and a power module are arranged in the containing cavity, and the induction coil and the power module are electrically connected with the control module. An exposed temperature sensor is arranged at the bottom of the opening of the base, the temperature measuring end of the temperature sensor can make contact with the outer surface of the bottom of the metal inner container, and the temperature sensor is electrically connected with the control module. The bottom of the metal inner container is made of iron-based metal and located over the induction coil, and the induction coil generates a high-frequency magnetic field to act on the bottom of the metal inner container to generate an eddy current phenomenon for heating. According to the complementary food bowl, through the mode of combining inductive heating and temperature conduction liquid, the heating efficiency of the complementary food bowl is improved, energy loss of heat conduction is reduced, and meanwhile the heat preservation time of the complementary food bowl can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of small household appliances, and particularly relates to an inductive heating and heat preservation complementary food bowl. Background Art

[0002] A complementary food bowl is a kitchen appliance that provides heat through a heating component to keep food at a constant temperature, especially suitable for use by infants and young children during the complementary food addition stage, so that the food can be kept at a suitable temperature during a relatively long feeding period.

[0003] For example, the complementary food bowl with the publication number CN216293790U includes a bowl body, a body, a power supply component, a heating component and a control module. A charging port is provided on the body. The power supply component includes a power board arranged in the body for connecting to the mains, and a rechargeable battery electrically connected to the charging port. The heating component is arranged at the bottom of the accommodating cavity, and the heating component includes a first heating element electrically connected to the power board and a second heating element electrically connected to the rechargeable battery. The heating power of the first heating element is greater than that of the second heating element. The above complementary food bowl can only use the first and second heating elements to heat the bowl body as needed to play a heat preservation function. However, the resistive heating component has a low heating efficiency, and its heating performance will significantly decay with the use time. At the same time, heat loss will also occur when the heating element transfers heat to the bowl body by heat conduction. In addition, when the ambient temperature is low, the bowl body dissipates heat quickly, and its heat preservation performance is also poor. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an inductive heating and heat preservation complementary food bowl, which can improve the heating efficiency and heat preservation effect of the complementary food bowl.

[0005] The utility model adopts the following technical solutions:

[0006] An inductive heating and heat preservation complementary food bowl includes a base with an open upper end and a metal inner liner located in the open part of the base. A sandwich layer is arranged in the side wall of the metal inner liner, and a heat-conducting liquid is arranged in the sandwich layer. The lower part of the base has an accommodating cavity, in which an induction coil, a control module and a power module are arranged. The induction coil and the power module are respectively electrically connected to the control module. A temperature sensor is arranged at the bottom of the open part of the base, and the temperature sensor is electrically connected to the control module. The bottom of the metal inner liner is made of iron-based metal, and its bottom is located directly above the induction coil. The induction coil generates a high-frequency magnetic field to act on the bottom of the metal inner liner to generate an eddy current phenomenon for heating.

[0007] Further, the base includes an upper shell and a lower seat body hermetically connected thereto. The upper shell has a groove with an open upper end, and the metal inner liner is located at the groove of the upper shell. The lower seat body is connected to the upper shell through fasteners, and an accommodating cavity is formed between the bottom of the upper shell and the bottom of the lower seat body.

[0008] Furthermore, a support plate is provided in the accommodation cavity. The induction coil is connected to the support plate, and both the power supply module and the control module are located below the support plate.

[0009] Furthermore, threaded hole columns are provided at the bottom of the upper housing, and mounting columns corresponding to the threaded hole columns are provided on the lower seat body. The mounting columns and the threaded hole columns fixedly connect the upper housing and the lower seat body through fasteners.

[0010] Furthermore, the power supply module includes a rechargeable battery. The rechargeable battery is located between the mounting column and the threaded hole column, and the side wall of the rechargeable battery contacts the mounting column to form a limit.

[0011] Furthermore, the edge of the metal inner container has an annular card slot, and the edge of the open mouth of the base has an annular protrusion. The annular card slot can be elastically clamped at the annular protrusion to detachably connect the metal inner container and the base.

[0012] Furthermore, an electromagnetic shielding layer is provided at the bottom of the support plate.

[0013] Furthermore, an induction heating coating is further provided on the iron-based metal outer wall at the bottom of the metal inner container.

[0014] Furthermore, the temperature sensor is an infrared temperature sensor, and its upper detection end is hermetically connected to the base through sapphire or quartz glass.

[0015] Furthermore, an elastic wall body thinner than the peripheral side wall body is provided on the side wall of the metal inner container.

[0016] The beneficial effects of the present utility model compared with the prior art are as follows:

[0017] By combining inductive heating and heat-conducting liquid, the heating efficiency of the complementary food bowl is improved, and the energy loss of heat conduction is reduced. At the same time, by utilizing the large specific heat capacity of the heat-conducting liquid, the heat preservation duration of the complementary food bowl can be extended under the condition of relatively low temperature.

[0018] By providing an induction heating coating on the iron-based metal outer wall at the bottom of the metal inner container, the heat efficiency generated is more than 20% higher than that of stainless steel metal, and it has the advantages of fast heating speed and high efficiency.

[0019] By providing an annular card slot at the edge of the metal inner container and an annular protrusion at the edge of the open mouth of the base, the detachable connection between the metal inner container and the base can be realized, which is convenient for cleaning and using the complementary food bowl. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a longitudinal sectional structural schematic diagram of an inductive heating and heat preservation complementary food bowl of the present utility model;

[0021] Figure 2 is Figure 1 The partial enlarged structural schematic diagram at position I in

[0022] Figure 3 is the schematic block diagram of the circuit module connection of the present utility model;

[0023] Figure 4 is the schematic structural diagram of the base of the present utility model;

[0024] Figure 5 is Figure 1 the schematic cross-sectional structural diagram in the A-A direction in

[0025] Explanation of reference numerals: 100, base; 101, accommodation cavity; 102, induction coil; 103, control module; 104, power module; 104a, rechargeable battery; 105, support plate; 106, electromagnetic shielding layer; 107, temperature sensor; 108, annular protrusion; 110, upper housing; 111, groove; 112, threaded hole column; 120, lower seat body; 121, mounting post; 122, grip; 200, metal inner container; 201, interlayer; 202, heat-conducting liquid; 203, elastic wall body; 204, annular clamping groove. Detailed implementation manners

[0026] To make the present utility model more clear and understandable, the following further describes an inductive heating and heat-preserving complementary food bowl of the present utility model with reference to the accompanying drawings. The specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0027] As Figures 1 to 3 shown, an inductive heating and heat-preserving complementary food bowl includes a base 100 with an open upper end and a metal inner container 200 located in the open mouth of the base 100. The metal inner container 200 is bowl-shaped and is made of a material with good thermal conductivity. Its bottom is made of iron-based metal. In this embodiment, the metal inner container 200 is preferably made of food-grade stainless steel. An interlayer 201 is provided in the circumferential side wall of the metal inner container 200, and a heat-conducting liquid 202, such as hydrogel, is provided in the interlayer 201. Hydrogel has a large specific heat capacity and can store more heat energy. The volume of the heat-conducting liquid 202 is smaller than the volume of the interlayer 201 to prevent damage to the metal inner container 200 caused by thermal expansion changes. In addition, an elastic wall body 203 thinner than the circumferential side wall body is provided on the side wall of the metal inner container 200. When the heat-conducting liquid 202 expands thermally, the elastic wall body 203 preferentially undergoes elastic deformation to increase the volume of the interlayer 201, further reducing the risk of expansion damage to the metal inner container 200.

[0028] The lower part of the base 100 has a receiving cavity 101. Inside the receiving cavity 101, there are an induction coil 102, a control module 103, and a power module 104. The induction coil 102 and the power module 104 are electrically connected to the control module 103 respectively. At the bottom of the open end of the base 100, there is a temperature sensor 107. Here, the temperature sensor 107 is an infrared temperature sensor, and its detection end above is hermetically connected to the base 100 through sapphire or quartz glass. The non-contact infrared temperature measurement method is used to improve the accuracy and speed of temperature detection. Sapphire or quartz glass has good light transmittance, which can reduce light wave loss. The temperature sensor 107 is electrically connected to the control module 103.

[0029] Among them, the bottom of the metal inner liner 200 is directly above the induction coil 102. The induction coil 102 is wound by a wire with an insulating layer and is in an overall original sheet shape. It generates a high-frequency magnetic field to cause an eddy current phenomenon at the bottom of the metal inner liner 200 for heating. The heat acts on the rest of the metal inner liner 200 and the heat-conducting liquid 202 in the interlayer 201 through heat conduction. The heat-conducting liquid 202 can store a part of the heat to improve the heat preservation effect. The control module 103 can control the heating and heat preservation actions of this device, and at the same time, it also has the function of a main switch.

[0030] Furthermore, on the iron-based metal outer wall at the bottom of the metal inner liner, there is also an induction heating coating (not shown in the figure). This coating relies on the energy of the eddy current to achieve the heating purpose and has the advantages of fast heating speed, high efficiency, and strong controllability. Here, this coating is an existing technology. For example, ternary boride metal ceramic coatings and nickel-based composite coatings, etc. After these coatings are subjected to induction heating treatment, their bonding strength, microhardness, and wear resistance can be significantly improved. For example, the ternary boride metal ceramic coating prepared on the steel surface after induction heating treatment at 980 °C has no change in its structure and is composed of Mo 2 FeB 2 hard-phase components, showing excellent wear resistance.

[0031] Combined with Figure 1 、 Figure 4 、 Figure 5 As shown, the specific structure of the base 100 is as follows. It includes an upper shell 110 and a lower seat body 120 hermetically connected to it. The upper shell 110 has a groove 111 with an open upper end. The shape of the groove 111 is adapted to the surface contour of the metal inner liner 200, and the metal inner liner 200 can be adapted with a gap at the groove 111 of the upper shell 110.

[0032] A set of downwardly extending threaded hole columns 112 are provided at the bottom of the upper housing 110, and a set of upwardly facing mounting posts 121 are provided at the bottom of the lower base 120. The mounting posts 121 correspond to the threaded hole columns 112, and the two are locked together by screws to install the upper housing 110 in the lower base 120 to form a fixed connection. At the same time, the accommodation cavity 101 is formed between the bottom of the upper housing 110 and the bottom of the lower base 120. The upper edge of the upper housing 110 can be pressed against the top edge of the lower base 120, and a sealed connection can be formed by means such as cementing or ultrasonic welding. A pair of symmetrically arranged handles 122 are also provided on the outer peripheral side of the lower base 120 for easy grasping by young children.

[0033] A support plate 105 is provided in the accommodation cavity 101. Considering the convenience of assembly, the support plate 105 can be connected to the support structure provided on the lower base 120 by screws. The support plate 105 serves as a support member for placing the induction coil 102, and the power supply module 104 and the control module 103 are both located below the support plate 105. Considering that high-frequency electromagnetic fields can affect the working performance of electrical components, an electromagnetic shielding layer 106 is provided at the bottom of the support plate 105. The electromagnetic shielding layer 106 can be formed by spraying metal paint, and it is not elaborated here as it is a conventional technology.

[0034] The power supply module 104 is a rechargeable battery module, which includes a rechargeable battery 104a. The rechargeable battery 104a is located between the mounting posts 121 and the threaded hole columns 112, and the side wall of the rechargeable battery 104a contacts the mounting post 121 to form a limit. Of course, a buffer cotton or the like can be provided on the surface of the rechargeable battery 104a to reduce external rigid impacts.

[0035] In some embodiments, the metal inner container 200 and the base 100 are of a detachable connection structure. As shown in Figure 2 FIG., a ring-shaped slot 204 is provided at the edge of the mouth of the metal inner container 200, and the mouth of the ring-shaped slot 204 is set downward. Correspondingly, a ring-shaped protrusion 108 is provided at the outer edge of the open mouth of the base 100, and the protruding direction of the ring-shaped protrusion 108 is set upward. Here, the cross-section of the ring-shaped protrusion 108 is slightly larger than the cross-section of the ring-shaped slot 204. In this way, the ring-shaped slot 204 can be elastically clamped at the ring-shaped protrusion 108 to make the metal inner container 200 and the base 100 detachable.

[0036] When the device works, the working state of the induction coil 102 is controlled through the program set in the control module 103, and the temperature sensor 107 sends the temperature detection signal to the control module 103 for processing to realize the heating and heat preservation actions of the supplementary food bowl. Here, only the working process is illustrated, and the specific operation is not limited.

[0037] The above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. And these obvious changes or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. An induction heating and heat preservation food supplement bowl, comprising a base (100) with an open top and a metal liner (200) located in the opening of the base (100), characterized in that: The metal liner (200) has a side wall provided with an interlayer (201), and a temperature-conducting liquid (202) is provided in the interlayer (201); the base (100) has a accommodating chamber (101) at the bottom, and an induction coil (102), a control module (103) and a power module (104) are provided in the accommodating chamber (101), and the induction coil (102) and the power module (104) are respectively electrically connected to the control module (103); a temperature sensor (107) is provided at the bottom of the exposed portion of the base (100), and the temperature sensor (107) is electrically connected to the control module (103); the bottom of the metal liner (200) is iron-based metal, and the bottom is located directly above the induction coil (102); the induction coil (102) generates a high-frequency magnetic field to act on the bottom of the metal liner (200) to generate an eddy current phenomenon for heating.

2. The induction heating and heat preservation food supplement bowl according to claim 1, characterized in that: The base (100) comprises an upper shell (110) and a lower seat body (120) sealed therewith, the upper shell (110) having a groove (111) with an open upper end, and the metal liner (200) is located in the groove (111) of the upper shell (110); the lower seat body (120) is connected to the upper shell (110) via fasteners, and the accommodating cavity (101) is formed between the bottom of the upper shell (110) and the bottom of the lower seat body (120).

3. The induction heating and heat preservation food supplement bowl according to claim 2, characterized in that: A support plate (105) is provided in the accommodating cavity (101), the induction coil (102) is connected to the support plate (105), and the power module (104) and the control module (103) are both located on the lower side of the support plate (105).

4. The induction heating and heat preservation food supplement bowl according to claim 3, characterized in that: The bottom of the upper shell (110) is provided with a threaded hole column (112), and the lower seat body (120) is provided with a mounting column (121) corresponding to the threaded hole column (112), and the mounting column (121) and the threaded hole column (112) are fixedly connected to the upper shell (110) and the lower seat body (120) via fasteners.

5. The inductively heated food bowl according to claim 4, characterized in that: The power module (104) comprises a rechargeable battery (104a), the rechargeable battery (104a) is located between the mounting column (121) and the threaded hole column (112), and the side wall of the rechargeable battery (104a) contacts the mounting column (121) to form a limit.

6. An induction heating and heat preservation food supplement bowl according to claim 1, 4 or 5, characterized in that: The edge of the metal liner (200) has an annular groove (204), and the edge of the open portion of the base (100) has an annular protrusion (108). The annular groove (204) can be elastically clamped on the annular protrusion (108) so that the metal liner (200) and the base (100) are detachably connected.

7. The inductively heated food supplement bowl according to claim 3, characterized in that: An electromagnetic shielding layer (106) is provided at the bottom of the support plate (105).

8. The induction heating and heat preservation food supplement bowl according to claim 1, characterized in that: An induction heating coating is also provided on the iron-based metal outer wall at the bottom of the metal liner (200).

9. The induction heating and heat preservation food supplement bowl according to claim 1, characterized in that: The temperature sensor (107) is an infrared temperature sensor, and its upper detection end is sealed and connected to the base (100) via sapphire or quartz glass.

10. The induction heating and heat preservation food supplement bowl according to claim 1, characterized in that: An elastic wall body (203) thinner than the surrounding side wall body is provided on the side wall of the metal liner (200).

Images