CN213371471U - Milk warming device - Google Patents

Abstract

The utility model discloses a milk warmer, which comprises a heat preservation cover, a heating main body and a control base which are sequentially arranged from top to bottom, wherein the heating main body is a cylinder which is enclosed by a shell with heating and heat preservation functions and is internally provided with a heating cavity, and the heating cavity is used for placing a feeding bottle to be heated and heat preserved; the top of the heating main body is open and is detachably connected with the heat preservation cover; the bottom of the heating main body is closed and is fixedly connected with the control base. The milk warmer heats by using a graphene surrounding structure, and the graphene electrothermal films on the periphery are heated in the air in a radiation manner, so that the milk warmer can quickly and uniformly heat milk placed in the milk warmer under the condition that a heat conductor (water or other heat conductors) is not needed; the milk warmer is light, convenient to carry and safe to use.

Description

Milk warming device

Technical Field

The utility model belongs to the technical field of heating electrical apparatus, a feeding bottle heat retainer that heats is related to, especially relate to a graphite alkene heating heat preservation milk warming device.

Background

The milk warmer is used for heating milk, is convenient for users to drink, especially is convenient for infants to drink at any time, the milk warmer used in the market at present realizes the heating function by a resistance wire bath heating (water or other heat-conducting objects), and has the following defects: 1) the resistance wire water bath milk warmer heats by taking a resistance wire as a heating piece, the resistance wire generates heat linearly, and the resistance wire is arranged in a spiral structure, the spiral distances (namely the distances between the spiral resistance wires) at different parts are different, the heat dissipation is slow at high temperature at a place with a small distance, and the heat dissipation is fast at a place with a large distance at low temperature, so that a heated object cannot be heated uniformly; 2) the milk warmer is heated in a water bath mode, water (or other heat conducting substances) needs to be added into the milk warmer when the milk warmer is used outdoors, and the milk warmer can work and is inconvenient to use and carry; 3) in addition, the existing milk warmer needs high-voltage power supply (namely 220V power supply), can only be used at home, cannot be carried and is unsafe to use; 4) the existing milk warmer has only a simple heating function, cannot keep constant temperature, cannot be used immediately when milk is needed, and is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a milk warmer convenient to carry, which adopts a graphene membrane radiation heating method to heat milk liquid and a milk bottle, does not need heat conduction water or other heat conduction objects during working, and heats uniformly; the working voltage is low, the low voltage is used, the power is supplied safely, and the use is safe and convenient; but also has the efficient heat preservation function, and can be drunk immediately when milk is needed to be drunk.

In order to realize the purpose of the utility model, the utility model provides a milk warmer, which comprises a heat preservation cover, a heating main body and a control base which are arranged from top to bottom in sequence, wherein the heating main body is a cylinder which is enclosed by a shell with heating and heat preservation functions and is internally provided with a heating cavity, and the heating cavity is used for placing a feeding bottle to be heated and heat preserved; the top of the heating main body is open and is detachably connected with the heat preservation cover; the bottom of the heating main body is closed and is fixedly connected with the control base.

Wherein, the heat preservation lid can be dismantled with the top of warm milk ware heating main part and be connected, wherein can dismantle the connection and be threaded connection, joint, pin junction or key-type connection, preferably threaded connection, joint.

In particular, the inner surface of the lower end of the heat preservation cover is provided with internal threads or an internal buckle, and the outer surface of the upper end of the heating main body of the milk warmer is provided with external threads or an external buckle. The heat preservation cover and the heating main body are connected into a whole through threads.

Especially, the sealing ring is arranged in the heat preservation cover, when the heat preservation cover is buckled on the upper part of the milk warmer heating main body, the top of the milk warmer heating main body is sealed through the sealing ring, heat loss is prevented, and a heat preservation effect is achieved.

Wherein, the milk warming device heating main body is fixedly connected with the control base into a whole, and the milk warming device heating main body is fixed on the upper part of the base.

Particularly, the heating body of the milk warming device and the control base are welded, riveted and bonded together, preferably welded.

In particular, the heat preservation cover is formed by injection molding of PC, PP, PES, PET or PPSU.

The shape and size of the heat preservation cover are matched with those of the heating main body of the milk warmer.

Wherein, the shell of milk warming device heating main part includes graphite alkene zone of heating, reflection stratum, insulating layer and outer protective layer, and graphite alkene zone of heating, reflection stratum, insulating layer, protective layer from interior to exterior closely coincide in proper order enclose into the cylinder type that inside has the cavity.

Particularly, the graphite alkene zone of heating is made by graphite alkene heating diaphragm, wherein graphite alkene heating diaphragm is including polyimide substrate membrane, copper foil circuit board, graphite alkene membrane, the polyimide protection film that superposes together in proper order.

The polyimide substrate film, the copper foil circuit board, the graphene film and the polyimide protective film are integrated through hot pressing.

In particular, the polyimide protective film or the polyimide substrate film in the graphene heating film faces the inside, namely the feeding bottle to be heated or insulated.

Wherein the thickness of the polyimide substrate film is 10-100 microns; the thickness of the polyimide protective film is 10-1000 microns; the thickness of the copper foil circuit board is 10-100 microns.

Particularly, the square resistance of the graphene heating layer is 40-200 ohms; the thickness is 5-120 microns.

The copper foil circuit board is prepared by the following method:

(1) the copper foil circuit board is used for making a patterned graph by using drawing software CAD, PS and AE and printing a film sheet by using an ink-jet laser printer, and CAD drawing is preferably selected;

(2) exposing by using a PI copper clad foil of a composite photosensitive film, wherein the thickness of the photosensitive film is 15-30 microns, the thickness of the copper foil is 10-30 microns, the thickness of the PI is 15-30 microns, and the thickness of the PI is 10-20 microns after glue is applied;

(3) carrying out first development on the exposed copper foil prepared in the step (2) by using a sodium carbonate or methyl carbonate (with the concentration of 10-30 WT%) solution by using a developing machine, wherein the developing speed is 1-3cm/s, and the pressure is 1.5-3.0 MPa;

(4) drying the copper foil subjected to the first development prepared in the step (3) for 15-30 minutes by using a drying box at the temperature of 100-130 ℃, and performing second development by using ferric chloride, copper chloride or hydrogen peroxide (with the concentration of 20-50 WT%) solution and a developing machine at the developing speed of 1-5cm/s and the pressure of 2.0-4.0 MPa;

(5) and (4) removing the photosensitive film on the copper foil developed for the second time in the step (4) by using a film removing solution, and cleaning to obtain the copper foil circuit, wherein the film removing temperature is 80-100 ℃ and 30-60 s.

The polyimide substrate film and the copper foil circuit board are subjected to patterning design by using drawing software, and are prepared by laser ink jet, exposure, development and etching.

The polyimide substrate film, the copper foil circuit board, the graphene film and the polyimide protective film are sequentially arranged from top to bottom and are prepared by hot pressing at the temperature of 180 ℃ for 30-80 s by using a hot press 120.

Wherein, be provided with temperature sensor on the graphite alkene heating diaphragm for the temperature of monitoring graphite alkene zone of heating, monitor the inside temperature of milk warming equipment promptly.

In particular, the temperature sensor may be disposed either on the side facing the bottle to be heated or on the side facing the reflective layer.

The temperature sensor detects the temperature of the graphene heating diaphragm, and the temperature is displayed and adjusted through the processing of the control circuit. The temperature sensor is electrically connected with the control base through a lead to display and regulate the temperature of the feeding bottle in the milk warmer.

The graphene heating diaphragm is of a ring-surrounding structure surrounding the inner wall of the milk warmer, and a temperature sensor is arranged on the heating diaphragm and used for detecting the temperature of the graphene heating diaphragm; the temperature sensor is connected with a circuit board (PCB) of the control seat; controller welded on the circuit board (CPU, integrated circuit, etc.)

The temperature sensor is electrically connected with the temperature display screen, the temperature adjusting button and the temperature fine adjusting button of the control base, and the temperature measured by the temperature sensor is displayed through the display screen for a user to observe.

But set up temperature sensor accurate accuse temperature on the graphite alkene heating film piece, the state and the temperature of real-time detection graphite alkene heating film work provide data for the display.

The two electrodes of the copper foil circuit board of the graphene heating diaphragm are the positive electrode and the negative electrode of the graphene heating layer, and are electrically connected with positive and negative electrode ports of a circuit board power supply output in the control base through leads.

Wherein the reflective layer is made of aluminum foil.

In particular, the thickness of the reflective layer is 0.1 to 0.5mm, preferably 0.2 mm.

Particularly, the aluminum foil of the reflecting layer is a composite aluminum foil film, preferably an aluminum foil heat insulation film, and more preferably a DiKe heat insulation coil.

Besides the reflecting layer is made of aluminum foil, other metal tin and copper foil are suitable for the invention.

The heat insulation layer is made of double-layer vacuum-pumping toughened glass or double-layer vacuum-pumping edible stainless steel materials, and is preferably made of double-layer vacuum-pumping glass.

In particular, the thickness of the thermal insulation layer is 1-10mm, preferably 5 mm.

Wherein the outer protective layer is made of Polycarbonate (PC)/polypropylene (PP), Polyester (PET), polyether sulfone resin (PES), polyphenylene sulfone resin (PPSU) and other materials.

In particular, the thickness of the outer protective layer is 1 to 5mm, preferably 3 mm.

Wherein, a circuit board (PCB) and a control circuit are arranged in the control bottom; be provided with temperature display screen, temperature regulation button, temperature fine setting button and power socket on the surface of control base, wherein:

the temperature display screen displays the temperature inside the heating cavity of the milk warmer and the working state of the graphene heating layer; the temperature adjusting button can quickly adjust and select heating power to quickly heat the milk warmer; the temperature fine adjustment button is used for finely adjusting the heating power of the milk warmer and accurately controlling the heating and heat preservation temperatures of the milk warmer; the power socket is connected with an external power supply through a lead or a data line to supply power or charge the milk warmer.

Particularly, the circuit board is a carrier for a PCB circuit board; the control circuit is a generic term for a CPU, an integrated circuit, and the like.

The temperature adjusting button is a multi-gear temperature adjusting button, can select and adjust the temperature in multiple levels, such as 45 ℃, 50 ℃, 60 ℃ and other multiple levels, and is beneficial to a user to quickly select the heating and heat-preserving temperature.

The temperature sensor probe is attached to one side of the graphene heating diaphragm, the tail end of the temperature probe is connected with a port of a PCB (circuit board), and a display screen, a temperature fine adjustment button and a temperature adjustment button are connected through an integrated circuit (MCU) on the PCB; the analog signal of the temperature sensor is converted into a digital signal through the single chip microcomputer to display the temperature on the display screen, and the temperature fine adjustment button and the temperature adjustment button change the power through the integrated circuit to achieve temperature adjustment.

Particularly, the temperature display screen, the temperature adjusting button and the temperature fine adjusting button are arranged on one side of the outer surface of the control base, and are usually arranged on the front part of the base; the power outlet is provided on the other side of the outer surface of the control base, typically at the rear of the base.

In particular, the power socket is disposed at a position opposite to the other side of the temperature display screen.

Especially, temperature display screen, temperature regulation button, temperature fine setting button set up towards user's one side, and through the wire with control base in be circuit board (PCB), control circuit be connected.

The temperature sensor is attached to the graphene heating diaphragm, and the graphene heating layer directly surrounds the periphery of a heated object (a feeding bottle), so that the temperature of the graphene heating diaphragm is equivalent to the temperature display of the heated object.

The utility model aims at solving the problems of inconvenient carrying and uneven heating of the existing milk warming device, the graphene heating film is used for heating, the graphene film can radiate and heat in the air, and the problem that the existing milk warming device needs water bath (other heat conducting objects) for heating is solved; the graphene membrane surface heating and surrounding type heating structure solves the technical problems of uneven heating, low heating speed and the like of the existing milk warmer; and the graphene heating film has extremely high far infrared radiation conversion efficiency, and has a health care effect due to far infrared radiation heating.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) the utility model discloses a milk warming device uses graphite alkene surrounding type structure heating, through graphite alkene electric heat membrane radiant heating in the air all around, can make milk warming device under the condition that does not need heat conduction thing (water or other heat conduction things), realizes quick, the thermally equivalent of milk liquid placing in it inside.

The graphene heating film surrounds the inner wall of the milk warmer for one circle, and the surrounding structure can enable a heated object to be heated more quickly and uniformly.

(2) The utility model discloses a milk warming device uses is graphite alkene heating film, and graphite alkene heating film has high far infrared radiation conversion efficiency, is the face form and generates heat and generate heat evenly rapidly, and has health function.

(3) The utility model discloses a milk warming device adopts the low pressure power supply, can use the treasured that charges to realize low pressure heating or constant temperature function, with getting up safer, can carry the use.

(4) The utility model uses an intelligent temperature control system, not only can heat but also can keep the milk constant temperature, the temperature adjusting button of the utility model has the functions of fast adjusting and selecting the heating power, when the baby needs the milk, the heating gear can be fast selected, the milk can be heated fast, the temperature can be raised fast, the milk can be used at once, and the milk can be used conveniently at any time; in addition, the temperature fine adjustment button can finely adjust the heating power of the milk warmer and accurately adjust the temperature of milk in the milk bottle in the milk warmer, so that the temperature of the milk is suitable for different milk users, and the milk is comfortable to take.

(5) The utility model discloses a milk warming equipment does not need heat-conducting material (water or other heat-conducting material) just can realize the heating function, not only restricts to and uses at home but also can go out work, tourism use anytime and anywhere, and is convenient, and is safe, is accepted by market more easily.

(6) The utility model discloses milk warming equipment adopts graphite alkene heating film to heat, and graphite alkene heating film is thin, and the milk warming equipment of making is under the same condition of external dimension, and its internal diameter that heats the main part is big for milk warming equipment's internal heating space volume is big, is greater than the common feeding bottle external diameter 1-3MM in market usually, and the milk volume that can heat under the same heating condition is more, or heats the milk of the same amount, and rate of heating is faster, when needs drink milk, can drink immediately.

The milk warmer has good heating and heat preservation effects, the graphene heating layer made of the graphene heating diaphragm of the milk warmer heating shell is a heating body, the heating uniformity is good, and the heating is rapid; the reflecting layer is used for insulating heat and reflecting the temperature of the heating body, so that heat generated by the heating body is reflected to the inside, the heat is prevented from being conducted to the outside, the heat loss is reduced, and the heating efficiency is enhanced; the heat insulation layer is double-layer vacuum glass or double-layer stainless steel and is provided with a hollow cavity, so that heat is mainly prevented from losing to the outer wall of the milk warmer, and heat preservation and heat insulation are achieved.

Because the milk warmer of the utility model can realize the heating function without heat conduction objects (water or other heat conduction objects), the milk warmer can be used at home, and can also be used at any time and any place during work and travel, and is convenient and safe.

Drawings

FIG. 1 is a schematic view of a milk warmer of the present invention;

FIG. 2 is a schematic sectional view of the casing of the heating body of the milk warmer of the present invention;

fig. 3 is a rear view of the milk warmer of the present invention.

Description of the reference numerals

1. A heat preservation cover; 2. heating the body; 21. a housing; 211. a graphene heating layer; 212. a reflective layer; 213. a thermal insulation layer; 214. a protective layer; 22. heating the cavity; 3. a base; 31. a display screen; 32. a temperature adjustment button; 33. a temperature fine adjustment button; 4. and (4) external threads.

Detailed Description

The invention will be further described with reference to specific embodiments, the advantages and features of the invention will become more apparent as the description proceeds. These examples are merely illustrative and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

In the description of the present invention, terms indicating orientation or positional relationship such as "front", "rear", "upper", "lower", "left", "right", "middle", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in fig. 1, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a certain specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, the utility model discloses a graphite alkene heating milk warmer wholly is including heat preservation lid 1, milk warmer heating main part 2 and base 3, and heat preservation lid, milk warmer heating main part and base top-down arrange in proper order, and the heat preservation lid is closed during heating or heat preservation, and top-down connects gradually and is an organic whole, connects and is the whole cylinder body type, cylindric cup that is of integrative milk warmer.

The heat preservation cover is detachably connected with the top of the heating main body of the milk warming device, and the detachable connection is usually threaded connection, clamping connection, pin connection or key connection; in the present embodiment, a screw connection will be described as an example.

The milk warmer heating main body is fixedly connected with the base into a whole, and the milk warmer heating main body is fixed on the upper part of the base. The fixed connection is usually welding, riveting, gluing.

The heat preservation lid plays isolated milk and outside air circulation, play and keep warm, prevent splashing and the effect of dust prevention, the heat preservation lid passes through threaded connection with the milk warming device heating main part, and cover inside setting up the sealing washer at the heat preservation (not shown in the drawing, the setting of sealing washer is similar with the sealing washer setting mode of current known thermos cup), when the heat preservation lid lock when milk warming device heating main part upper portion, top seal with milk warming device heating main part through the sealing washer, prevent that the heat from scattering and disappearing, play heat retaining effect, also play the effect of keeping apart the dust simultaneously.

The inner part of the lower end of the heat preservation cover is provided with an internal thread (not shown in the attached drawing) or an internal buckle, and the outer part of the upper end of the heating main body of the milk warmer is provided with an external thread or an external buckle.

The heat preservation cover is formed by injection molding of PC, PP, PES, PET or PPSU. The shape and size of the heat preservation cover are matched with those of the heating main body of the milk warmer.

Referring to fig. 1 and 2, the heating body 2 of the milk warmer is a hollow cylinder with a closed bottom and an open upper part, and is surrounded by a shell 21 with heating and heat-preserving functions, and the hollow cavity inside is a heating cavity 22.

The shape of the heating body of the milk warmer of the utility model is described by taking the cylinder shape as an example, and other three-dimensional shapes are all suitable for the invention except the cylinder shape.

The outer side of the upper end of the open top of the heating main body of the milk warmer is provided with an external thread 4 or a buckle which is detachably connected with the heat preservation cover; the outer side of the closed bottom of the base is fixedly connected with the base into a whole; the heating cavity inside the feeding bottle is cylindrical and is used for placing a feeding bottle for containing milk. After the milk bottle is placed in the heating cavity of the milk warmer heating main body, the heat-preservation cover is covered and screwed down, and milk in the milk bottle is heated.

As shown in fig. 2, the casing of the heating main body of the milk warming device comprises a graphene heating layer 211, a reflecting layer 212, a heat insulating layer 213 and an outer protective layer 214 which are closely adhered together from inside to outside in sequence, and the graphene heating layer, the reflecting layer, the heat insulating layer and the protective layer are closely overlapped from inside to outside in sequence to form a cylindrical body shape.

The graphene heating layer is made of a graphene heating membrane. The graphene heating membrane comprises a polyimide base material membrane, a copper foil circuit board, a graphene membrane and a polyimide protective membrane which are sequentially overlapped together, wherein the polyimide protective membrane layer in the graphene heating membrane faces to the inside, namely faces to a feeding bottle to be heated or insulated; the graphene film is close to the feeding bottle to be heated; or the polyimide substrate film faces the inside, namely the feeding bottle to be heated or insulated.

The electric connection points (namely the positive and negative electrodes of the graphene heating layer) of the graphene heating layer are positioned at the two electrodes of the copper foil circuit board, and the positive and negative electrodes of the graphene film are connected with the positive and negative electrode ports of the power supply output of the PCB; when current is introduced, the graphene film heats, and the graphene heating layer transfers heat to the feeding bottle with heating so as to realize uniformity of the feeding bottle.

The graphene heating film is provided with a temperature sensor (not shown in the attached drawings), and the temperature sensor can face the feeding bottle with heating and can also face the reflecting layer. The temperature sensor is electrically connected with the control base through a lead to display the temperature of the feeding bottle in the milk warmer.

The temperature sensor on the graphene heating diaphragm is connected with the control seat internal control circuit, the temperature display screen, the temperature adjusting button and the temperature fine adjusting button through the power line, so that the temperature can be displayed and adjusted.

The temperature sensor is connected with a PCB (circuit board) signal acquisition port and is connected with a display screen, a temperature fine adjustment button and a multi-gear temperature adjustment button through an integrated circuit (MCU) on a PCB; the analog signal of the temperature sensor is converted into a digital signal through the singlechip, and the temperature is displayed on the display screen; the temperature micro-adjusting button and the multi-gear temperature adjusting button adjust the resistance through the integrated circuit, so that the power is adjusted to realize temperature control.

The graphene film has high thermal efficiency, has the characteristics of second heating and uniformity, can uniformly and rapidly heat a heated object,

the temperature sensor is arranged on the graphene heating film and connected with the control circuit of the control base 3, the temperature sensor has the function of detecting the temperature of the graphene heating film, the functions of temperature display and temperature regulation inside the milk warming device are realized through the processing of the circuit board and the control circuit in the control base, and the functions of accurate temperature control, display and temperature regulation are achieved. The temperature sensor displays the internal temperature of the milk warming device through the temperature display screen, and a user can intuitively know the temperature of the milk bottle to be heated.

The reflective layer is made of aluminum foil, and is usually a composite aluminum foil film, preferably an aluminum foil heat insulation film, and is a DiKe heat insulation coil in the embodiment of the invention. The reflective layer is made of aluminum foil, and other metal foil layers such as copper foil, tin foil, etc. are suitable for the present invention. The reflective layer has a thickness of 0.2mm (typically 0.1-0.5mm is suitable).

The aluminum foil heat insulation film is formed by laminating an aluminum foil veneer, a polyethylene film, a fiber braided fabric and a metal coating film through hot melt adhesive. The aluminum foil heat insulation film has double functions of reflection and heat preservation; the simple structure is that a layer of aluminum foil and aluminum paper made of aluminum materials is adhered on the surface of a heat preservation layer made of aerogel felt, glass wool and rock wool materials. The function of reflecting the heat of graphite alkene heating film to the temperature breast pump inside is played to the reflector layer, avoids the heat to outwards conduct, reinforcing heating efficiency.

The heat-insulating layer is made of double-layer vacuum-pumping toughened glass or double-layer vacuum-pumping edible stainless steel materials, the thickness of the heat-insulating layer is 5mm (usually 1-10mm), the heat-insulating layer has the functions of isolating temperature from being transferred to the outside of the milk warmer, preventing heat loss, reducing heat and temperature loss of the milk warmer, playing the roles of heat insulation and heat preservation, simultaneously avoiding the high temperature of the outer wall of the milk warmer and reducing scalding.

The outer protective layer is used for protecting the outer surface of the heating body of the milk warmer, is made of Polycarbonate (PC), polypropylene (PP), Polyester (PET), polyether sulfone resin (PES), polyphenylene sulfone resin (PPSU) and other materials, and has a thickness of 3mm (usually 1-5 mm).

Referring to fig. 1 and 3, the control base is fixedly arranged at the outer side of the bottom of the milk warmer heating body and is fixedly connected with the milk warmer heating body into a whole. The control base and the milk warmer main body are fixedly connected together by a fixed connection mode such as welding, riveting, bonding and the like.

A circuit board (PCB) (not shown in the drawings) and a control circuit (not shown in the drawings) are mounted in the control base; the outer surface of the front part of the control base is provided with a temperature display screen 31 which displays the temperature and the working state of the graphene electrothermal film, namely the internal temperature of the milk warmer; the temperature adjusting button 32 is used for quickly adjusting and selecting heating power so that the milk warmer can be quickly heated; the temperature micro-adjusting button 33 is used for micro-adjusting the heating power of the milk warmer and has the functions of precisely adjusting and controlling the temperature in the milk warmer; the rear part of the control base is provided with a power socket 34 which is connected with an external power supply through a lead or a data wire to supply power or charge the milk warmer.

The temperature fine adjustment button comprises a heating power increasing and decreasing function, and can be used for fine adjustment of increasing or decreasing the heating or heat preservation temperature of the milk warmer. The temperature display screen, the temperature adjusting button and the temperature fine adjusting button are arranged on one side (namely the front side, namely the front part) facing a user, as shown in figure 1, and are connected with a circuit board (PCB) and a control circuit in the control base through leads. The power outlet may be located anywhere on the base, typically on the opposite side of the base from the display screen, i.e. the back of the control base, as shown in figure 3. The utility model discloses a power socket is USB power socket usually, and this socket is the same with a large amount of cell-phone digital data lines, uses convenient and fast more. The control base uses power adapter to be 5V-36V, preferred 12V, is less than human safe voltage, can use the treasured that charges to supply power for it, and it is more convenient to carry.

The utility model discloses well temperature regulation button 32 is total 4 gears (for example 45 ℃, 55 ℃, 65 ℃, 80 ℃) adjust, can the quick selected heating power, heats milk rapidly. The temperature fine adjustment button 33 can make a fine adjustment of increasing or decreasing the heating power (and temperature) of the milk warmer.

The power supply is connected with the power input port of the circuit board through a USB interface and a power line; the output port of the PCB is connected with the graphene membrane; the temperature sensor is connected with a PCB signal acquisition port; analog signals of the temperature sensor are converted into temperature display values through an integrated circuit board (single chip microcomputer), and the temperature display is performed through a display product, a temperature fine adjustment button is connected, the temperature adjustment button is connected with an integrated circuit and a resistor on a PCB, so that power adjustment is achieved, and therefore temperature is changed.

The milk warming device uses the graphene heating film to realize a radiation heating function (5V power supply by using a mobile power supply), realizes operation by a control button and a control circuit (chip) in a control base, sets a program of the control circuit (chip), and automatically starts a heating function (temperature sensor) when the temperature is lower than the set temperature.

The utility model discloses a milk warmer's working process as follows:

the feeding bottle to be heated is vertically placed into the heating cavity 22 of the heating main body of the milk warmer, and the heat-preservation cover is covered and screwed down. After the power socket 34 is connected with an external power supply, the heating power (for example, 45 ℃) is quickly selected and adjusted through the temperature adjusting button 32, the graphene heating layer is quickly heated, and the feeding bottle to be heated is quickly heated; if the user needs to heat the temperature in the feeding bottle to 50 ℃, the temperature is subjected to increasing fine adjustment through the temperature fine adjustment button 33, so that the temperature is raised and kept at 50 ℃; if the temperature in the baby bottle to be heated needs to be 42 deg.C, the temperature is down-finely adjusted by the temperature fine adjustment button 33 so that the temperature is lowered and maintained at 42 deg.C.

If the feeding bottle is charged through the power socket 34, the heating power is rapidly selected and adjusted directly through the temperature adjusting button 32, the graphene heating layer is rapidly heated, and the feeding bottle to be heated is rapidly heated; if the temperature of the feeding bottle to be heated and insulated is higher or lower than the temperature selected by the temperature adjusting button, the temperature is increased or decreased by the micro-adjustment of the temperature adjusting button, so that the temperature of the feeding bottle to be heated reaches the proper temperature required by the user

The above-described embodiments of the present invention are merely exemplary and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A milk warmer comprises a heat preservation cover, a heating main body and a control base which are sequentially arranged from top to bottom, and is characterized in that the heating main body is a cylinder which is surrounded by a shell with heating and heat preservation functions and is internally provided with a heating cavity, and the heating cavity is used for placing a feeding bottle to be heated and heat preserved; the top of the heating main body is open and is detachably connected with the heat preservation cover; the bottom of the heating main body is closed and is fixedly connected with the control base.

2. The milk warmer of claim 1, wherein the outer casing of the milk warmer heating body comprises a graphene heating layer, a reflection layer, a thermal insulation layer and an outer protection layer, wherein the graphene heating layer, the reflection layer, the thermal insulation layer and the protection layer are closely overlapped from inside to outside in sequence to form a cylinder.

3. The milk warmer of claim 2, wherein the graphene heating layer is made of a graphene heating membrane, wherein the graphene heating membrane comprises a polyimide substrate film, a copper foil circuit board, a graphene film and a polyimide protective film which are sequentially stacked together.

4. The milk warmer of claim 3, wherein the sheet resistance of the graphene heating layer is 40-200 ohms.

5. The milk warmer of claim 2, wherein said reflective layer is made of aluminum foil.

6. The milk warmer of claim 2 wherein the thermal insulation layer is made of double-layer vacuum-pumping toughened glass or double-layer vacuum-pumping food-grade stainless steel material.

7. The milk warmer of claim 6 wherein the insulating layer is made of double-layer vacuum glass.

8. The milk warmer according to any one of claims 1-7, wherein the control bottom is internally provided with a circuit board and a control circuit; be provided with temperature display screen, temperature regulation button, temperature fine setting button and power socket on the surface of control base, wherein:

the temperature display screen is used for displaying the temperature inside the heating cavity of the milk warmer and the working state of the graphene heating layer;

the temperature adjusting button is used for quickly adjusting and selecting heating power to quickly heat the milk warmer;

the temperature fine adjustment button is used for finely adjusting the heating power of the milk warmer and accurately controlling the heating and heat preservation temperature of the milk warmer;

and the power socket is connected with an external power supply through a lead or a data line and supplies power or charges the milk warmer.

9. Milk warming apparatus as claimed in claim 8, wherein the power socket is provided at a position opposite the temperature display.

10. The milk warmer as claimed in claim 8, wherein the temperature display screen, the temperature adjustment button and the temperature fine adjustment button are disposed on the side facing the user and connected to the circuit board and the control circuit in the control base via wires.

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