CN112842671B

CN112842671B - Heating device based on magnetic liquid

Info

Publication number: CN112842671B
Application number: CN202110186993.6A
Authority: CN
Inventors: 郝瑞参
Original assignee: Beijing Polytechnic
Current assignee: Beijing Polytechnic
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2023-05-23
Anticipated expiration: 2041-02-09
Also published as: CN112842671A

Abstract

The invention discloses a heating device based on magnetic liquid, which comprises a magnetizing box, wherein an inner container is arranged in the magnetizing box, an electrified coil which can be connected with a power supply is arranged between the inner container and the magnetizing box, a hand warmer can be placed in the inner container, and the magnetic liquid and heat-filling particles are arranged in the hand warmer. The heating device belongs to a non-contact heating method, an electrified coil is electrified and generates an electromagnetic field, and magnetic liquid and heat-filled particles in the hand warmer generate heat under the action of the magnetic field, so that the contact heating mode of electrode heating water or other solutions is replaced, the electric shock risk is avoided, the magnetizing box can be repaired, the hand warmer is still reused, and the problems of electric shock risk and incapability of repair and reuse are avoided; the damage caused by the fact that the working temperature of the battery exceeds the limit is avoided, and the battery is safe and environment-friendly.

Description

Heating device based on magnetic liquid

Technical Field

The invention relates to the technical field of heating devices, in particular to a heating device based on magnetic liquid.

Background

At present, the existing portable heating devices comprise a device for heating by heating water or other solutions and a charging hand warmer, and the two heating devices are both contact type heating methods.

Heating device that generates heat through heating water or other solutions, commonly known as hot-water bottle, its shortcoming lies in: the hot water bag adopts electrode type heating method, just can be connected with the power through setting up the power connection on the hot water bag, has the risk of electric shock when plug power and hot water bag's joint like this on the one hand, on the other hand owing to adopt accuse temperature and thermal fuse dual control insurance, in case the temperature controller control is out of order, the thermal fuse cuts off the power, stops the heating, needs to change new hand warmer product this moment, can not restore and reuse.

The electric hand warmer has the defects that the heating temperature of the heating sheet and the working temperature of the battery core have a certain difference, but the inside is a closed space, the internal temperature of the electric hand warmer can be gradually increased due to long-time high temperature, and the electric hand warmer can generate a small amount of heat when the battery core discharges, so that the electric hand warmer easily exceeds the working temperature limit of the battery and is dangerous.

Disclosure of Invention

The invention provides a heating device based on magnetic liquid, which has the following problems: how to avoid the problem that the damage of the hand warmer caused by various reasons cannot be repaired and how to avoid the damage caused by the exceeding of the limit of the working temperature of the battery.

In order to solve the technical problems, the invention provides the following scheme:

the invention provides a heating device based on magnetic liquid, which comprises a magnetizing box, wherein an inner container is arranged in the magnetizing box, an electrified coil which can be connected with a power supply is arranged between the inner container and the magnetizing box, a hand warmer can be placed in the inner container, and the hand warmer is internally provided with the magnetic liquid and heat-filling particles.

Preferably, the magnetic liquid consists of nanoscale ferromagnetic particles, a surfactant and a base carrier liquid;

the heat-charging particles are ferromagnetic particles with the size of microns and above.

Preferably, the hand warmer comprises a liquid containing bag, and magnetic liquid and heat-filling particles are placed in the liquid containing bag.

Preferably, the heating device further comprises a magnetizing drawer which can be placed in the inner container or taken out from the inner container.

Preferably, a shielding end cover capable of being opened and closed is arranged on the magnetizing box, a power supply connecting end is arranged on the magnetizing box, one end of the power supply connecting end is connected with an energizing coil, and the other end of the power supply connecting end can be connected with a power supply.

Preferably, an electromagnetic shielding layer is arranged between the magnetizing box and the energizing coil.

Preferably, the outermost layer of the magnetizing box is an insulating shell.

Preferably, a manual switch is arranged on the magnetizing box.

Preferably, the magnetizing box further comprises a temperature control module.

Preferably, the outer layer of the liquid containing bag is provided with an insulating layer.

The scheme of the invention at least comprises the following beneficial effects:

according to the scheme, the heating device based on the magnetic liquid belongs to a non-contact heating method, the electrified coil is electrified and generates an electromagnetic field, and the magnetic liquid and the heat-filled particles in the hand warmer generate heat under the action of the magnetic field, so that the traditional contact heating mode of heating water or other solutions by the electrodes is replaced, the electric shock risk is avoided, if the magnetizing box has a problem, the magnetizing box is repaired, the hand warmer can still be reused, and the electric shock risk and the problem that the hand warmer cannot be repaired and reused are avoided; the damage caused by the fact that the working temperature of the battery exceeds the limit is avoided, and the battery is safe and environment-friendly; meanwhile, the common water is replaced by the mixed formula of the magnetic liquid and the heat-charging particles, so that the heating efficiency is higher, and the heat-insulating effect is better.

Drawings

FIG. 1 is a schematic diagram of a magnetic liquid-based heating apparatus of the present invention;

FIG. 2 is a schematic diagram of a magnetizing box of a magnetic liquid-based heating appliance according to the present invention;

FIG. 3 is a schematic diagram of the structure of the energizing coil of the magnetizing box of the magnetic liquid-based heating device of the present invention;

FIG. 4 is a schematic diagram of the magnetizing drawer and the hand warmer of the heating device based on the magnetic liquid;

fig. 5 is a schematic cross-sectional view of a hand warmer of the magnetic liquid-based heating apparatus of the present invention.

Reference numerals:

1. magnetizing the drawer; 2. hand warmer; 21. a heat preservation layer; 22. a liquid containing bag; 23. a magnetic liquid; 24. charging the heat particles; 3. a magnetizing box; 31. a shielding end cap; 32. an inner container; 33. an insulating housing; 34. a power supply connection terminal; 35. a power-on coil; 36. an electromagnetic shielding layer; 37. and (5) a manual switch.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As shown in fig. 1 to 4, the embodiment provides a heating device based on a magnetic liquid 23, which comprises a magnetizing box 3, wherein an inner container 32 is arranged in the magnetizing box 3, an energizing coil 35 which can be connected with a power supply is arranged between the inner container 32 and the magnetizing box 3, a hand warmer 2 can be placed in the inner container 32, and the magnetic liquid 23 and heat charging particles 24 are arranged in the hand warmer 2. The heating device based on the magnetic liquid 23 in the embodiment belongs to a non-contact heating method, the electrified coil 35 is electrified and generates an electromagnetic field, the magnetic liquid 23 and the heat-charging particles 24 in the hand warmer 2 generate heat under the action of the magnetic field, the traditional contact heating mode of heating water or other solutions by the electrodes is replaced, the electric shock risk is avoided, if the magnetizing box 3 has a problem, the magnetizing box 3 is repaired, the hand warmer 2 can still be used, and the electric shock risk and the problem that the electric shock can not be repaired and reused are avoided; the damage caused by the fact that the working temperature of the battery exceeds the limit is avoided, and the battery is safe and environment-friendly.

The magnetic liquid 23 of the present embodiment is composed of nano-scale ferromagnetic particles, a surfactant, and a base carrier liquid, preferably a water-based magnetic liquid, an ester-based magnetic liquid, or the like. The heat charging particles 24 are ferromagnetic particles with the micron-sized or more, and have good magnetic conductivity, so that the hand warmer 2 absorbs heat and increases heat more quickly. In the embodiment, the micro-scale or above ferromagnetic particles are added into the mixed liquid formula of the magnetic liquid 23, so that the heating efficiency of the heat transfer medium in the hand warmer 2 in the electromagnetic field is higher, the working efficiency is improved, and the waiting time during heating is reduced.

As shown in fig. 5, the hand warmer 2 of the present embodiment includes a liquid containing bag 22, where the liquid containing bag 22 is made of a magnetically conductive, thermally conductive and high temperature resistant material, and a magnetic liquid 23 and heat-charging particles 24 are placed in the liquid containing bag 22. The outer layer of the liquid containing bag 22 is provided with the heat preservation layer 21, the heat preservation layer 21 is used for heat preservation and heat conduction, and can be designed into skin-friendly heat preservation fabric according to requirements, so that the comfort of contacting the skin is improved while the heat preservation is carried out;

as shown in fig. 2, the heating apparatus of the present embodiment further includes a magnetizing drawer 1, and the magnetizing drawer 1 may be placed in the inner container 32 or taken out from the inner container 32. The magnetizing drawer 1 is made of magnetic conductive materials and is used for conveniently placing and holding the hand warmer 2 before and after heating and keeping the hand warmer 2 clean.

As shown in fig. 2 to 3, the magnetizing box 3 of the present embodiment is provided with a shielding end cover 31 capable of opening and closing, and the shielding end cover 31 includes an electromagnetic shielding layer 36 and an insulating surface layer. The electromagnetic shielding layer 36 is made of electromagnetic shielding materials, such as conductive rubber, and the electromagnetic shielding layer 36 is used for shielding electromagnetic fields inside the magnetizing box 3 when the hand warmer 2 is heated so as not to influence some external devices; the insulating surface layer is made of insulating materials and is used for guaranteeing the safety of the magnetizing box 3. The magnetizing box 3 includes an insulating housing 33, the insulating housing 33 is the outermost layer of the magnetizing box 3, the insulating housing 33 is made of an insulating material, and a mixed insulating material formed by processing more than two insulating materials is commonly used. The insulating housing 33 is provided with a power supply connection terminal 34, one end of the power supply connection terminal 34 is connected to the energizing coil 35, and the other end can be connected to an ac power supply. An electromagnetic shielding layer 36 is disposed between the insulating housing 33 and the energizing coil 35 of the magnetizing box 3, and the electromagnetic shielding layer 36 is made of an electromagnetic shielding material, such as conductive rubber, for isolating an electromagnetic field inside the magnetizing box 3 from the outside. The magnetizing box 3 further comprises a temperature control module, the temperature control module comprises a temperature sensor and a control circuit part, the temperature sensor detects the upper limit of temperature, and the control circuit controls the switch to cut off the power supply. The magnetizing box 3 is provided with a manual switch 37, and the manual switch 37 is a button and is used for switching off the power supply when the manual power is needed to be cut off.

The liner 32 of this embodiment is made of a magnetically conductive non-conductive material, and is used for isolating the power-on coil 35 from the hand warmer 2, so as to ensure safe and smooth heating of the hand warmer 2. The energizing coil 35 of the embodiment is wound by copper wires and is used for generating an electromagnetic field to heat the liquid in the charger baby;

the working process of the heating device based on the magnetic liquid 23 is as follows:

step 1, putting the hand warmer 2 into a magnetizing drawer 1, pushing the magnetizing drawer 1 into a magnetizing box 3, and covering a shielding end cover 31;

step 2, the power supply connecting end 34 is connected, the electrifying coil 35 is electrified and generates an electromagnetic field, and the magnetic liquid 23 and the heat-charging particles 24 in the hand warmer 2 generate heat under the action of the magnetic field; when the temperature reaches the required temperature, the power supply is disconnected through the temperature control module, or a manual switch is pressed down at any time according to the human demand to disconnect the power supply;

and 3, opening a shielding end cover 31 of the magnetizing box 3, and taking out the hand warmer 2 for heating.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. The heating device based on the magnetic liquid is characterized by comprising a magnetizing box, wherein a shielding end cover capable of being opened and closed is arranged on the magnetizing box, the shielding end cover comprises an electromagnetic shielding layer and an insulating surface layer, the outermost layer of the magnetizing box is an insulating shell, an inner container is arranged in the magnetizing box, the heating device further comprises a magnetizing drawer, the magnetizing drawer can be placed in or taken out of the inner container, an energizing coil capable of being connected with a power supply is arranged between the inner container and the magnetizing box, an electromagnetic shielding layer is arranged between the magnetizing box and the energizing coil, a hand warmer is placed in the inner container, and magnetic liquid and heating particles are arranged in the hand warmer;

the magnetic liquid consists of nanoscale ferromagnetic particles, a surfactant and a base carrier liquid; the heat-charging particles are ferromagnetic particles with the size of microns and above;

the hand warmer comprises a liquid containing bag, wherein magnetic liquid and heat-filling particles are placed in the liquid containing bag;

the magnetizing box is provided with a power supply connecting end, one end of the power supply connecting end is connected with the energizing coil, and the other end of the power supply connecting end can be connected with a power supply;

a manual switch is arranged on the magnetizing box and is a button;

the magnetizing box further comprises a temperature control module, the temperature control module comprises a temperature sensor and a control circuit part, and when the temperature sensor detects the upper limit of the temperature, the control circuit part controls the switch to cut off the power supply;

an insulation layer is arranged on the outer layer of the liquid containing bag;

the liquid containing bag is made of magnetic conduction, heat conduction and high temperature resistance materials, the magnetizing drawer is made of magnetic conduction materials, the electromagnetic shielding layer is made of electromagnetic shielding materials, the insulating surface layer is made of insulating materials, and the liner is made of magnetic conduction non-conductive materials;

the insulating shell is made of insulating materials, the insulating shell is made of mixed insulating materials formed by processing more than two kinds of insulating materials, and a power supply connecting end is arranged on the insulating shell.