CN111720878A

CN111720878A - Portable foot warmer and control circuit thereof

Info

Publication number: CN111720878A
Application number: CN201910215003.XA
Authority: CN
Inventors: 陈灵波
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2020-09-29

Abstract

The invention relates to a portable foot warmer and a control circuit thereof, which comprises a shell, and an air supply device and a heating device which are fixedly connected in the shell, and is characterized in that: the casing includes casing and fixed connection and is in the lower casing of upper casing bottom, the top fixedly connected with handle of last casing, heating device includes the PTC heater, PTC heater fixed connection is in one side that the casing keeps away from ground down, air supply arrangement includes with the fan that the heat that the PTC heater produced sent out, fan fixed connection is in PTC heater top. The PTC heating body is used for replacing the traditional heating resistor, the installation is simple, the replacement is convenient, the thermal resistance is small, the heat exchange efficiency is high, and the energy-saving advantage is achieved; the shell is also provided with a handle, so that the shell is convenient for a user to carry.

Description

Portable foot warmer and control circuit thereof

Technical Field

The invention relates to a heating device, in particular to a portable foot warmer and a control circuit thereof.

Background

The warmer refers to a device for warming. As the standard of living increases, many people deploy heaters in their homes to replace the way they used stoves to warm them in the past. The type and structure of the warmer also change continuously with the needs of consumers. The foot warmer is widely used in various civil houses such as houses, offices, hotels and the like because of simple operation and good warming effect. The cold feeling on the sole of the foot can also cause the resistance to decline easily, thereby causing the symptoms of cold, abdominal pain, lumbocrural pain, gynecological dysmenorrhea and the like. For this reason, there are many types of foot warmers on the market. However, the conventional foot warmer has many disadvantages, especially the disadvantages of inconvenient carrying, unstable air supply and high energy consumption.

Disclosure of Invention

The portable foot warmer is energy-saving and environment-friendly, has constant air outlet temperature and is convenient to carry.

In order to solve the technical problems, the invention adopts the following scheme: the utility model provides a portable warm foot ware, includes casing and fixed connection air supply arrangement and heating device in the casing, its characterized in that: the casing includes casing and fixed connection and is in the lower casing of upper casing bottom, the top fixedly connected with handle of last casing, heating device includes the PTC heater, PTC heater fixed connection is in one side that the casing keeps away from ground down, air supply arrangement includes with the fan that the heat that the PTC heater produced sent out, fan fixed connection is in PTC heater top.

In order to enable the air to enter the foot warmer and be heated and then sent out, the heating device further comprises an air outlet, a baffle fixedly connected to the outer side of the air outlet and a heating channel communicated with the air outlet, and the baffle can prevent foreign matters or limbs of a user from contacting the heating channel and prevent scalding;

the air supply device comprises at least one air inlet, a filter plate fixedly connected to the air inlet, an air inlet channel communicated with the air inlet and a sterilizing device detachably arranged in the air inlet channel;

the air inlet channel is communicated with the upper end of the fan, so that the middle turning process is reduced, and air supply is smooth. And gas enters the air inlet pipeline through the filter plate, passes through the sterilizing device and then is blown to the PTC heater through the fan, and is heated by the PTC heater and then is discharged through the air outlet.

For the warm foot ware of audio-visual observation temperature and the convenient setting that blows off gas, it still is provided with the display screen to go up one side that the casing top is close to the people, near of display screen is provided with at least one touch switch, the casing corresponds down go up casing touch switch's position fixedly connected with operation panel, operation panel and fixed connection are in the casing is close to the power strip electricity of air intake and is connected down.

In order to save energy and improve safety performance, an ultrasonic detection module used for detecting whether the pins leave can be detachably arranged above a cavity formed by inwards concave lower shells, and the ultrasonic detection module is electrically connected with the power panel.

In order to improve the safety and prevent the skin of a user from being scalded due to overhigh temperature of the blown gas, a temperature controller is fixedly connected in the heating channel and is electrically connected with a heating device through a lead. When the heating device is used, the heating device works to enable the temperature in the heating channel to rise rapidly, and when the temperature reaches a certain temperature, the temperature controller acts to cut off the connection between the heating device and the power supply and stop heating. At this time, the air supply device delays for a period of time to continue air supply. After the temperature dropped, the temperature controller was electrified again and is reset, and heating device continues work to make the warm braw temperature that the air outlet blew out keep at the invariable state always, the temperature is even, uses very comfortablely, has high security moreover.

In order to purify the gas entering the foot warmer, the filter plate is fixedly connected to the air inlet through a buckle, and the filter plate is an activated carbon sponge filter screen or a nylon filter screen.

In order to sterilize the gas entering the foot warmer, the sterilizing device is an ultraviolet sterilizing lamp panel.

In order to prevent the foot warmer from sliding, a plurality of anti-skid foot pads are fixedly connected to the bottom surface of the lower shell, which is in contact with the ground.

Furthermore, the fan is a direct-current axial flow fan or a direct-current cross flow fan, has the advantages of low energy consumption, high air volume and quieter operation, and can accelerate the exchange of cold and hot air in a room and enhance the heating effect.

The other technical scheme of the invention is as follows: the utility model provides a control circuit of portable warm foot ware, includes switch, temperature controller, control panel, PTC heat-generating body, power strip, air supply arrangement, ultrasonic detection module, sterilizing equipment and thermistor, its characterized in that: the power switch, the temperature controller, the PTC heating element and the coil of the power panel are sequentially connected in series to form a loop; the power panel is connected with the air supply device, the ultrasonic detection module, the sterilization device and the control panel in parallel, and the control panel is connected with the thermistor in series.

The portable foot warmer has the following beneficial effects:

the portable foot warmer uses the PTC heating element to replace the traditional heating resistor, is simple to install and convenient to replace, has small thermal resistance and high heat exchange efficiency, and has the advantage of energy conservation; the shell is also provided with a handle, so that the shell is convenient for a user to carry.

Drawings

FIG. 1: the invention discloses a perspective view of a portable foot warmer;

FIG. 2: the invention discloses a bottom view of a portable foot warmer;

FIG. 3: the invention discloses a structural schematic diagram of a portable foot warmer;

FIG. 4: the control circuit of the invention is schematically shown.

Description of reference numerals:

1-a housing; 101-an upper shell; 102-a lower housing; 2, a power panel; 3-PTC heater; 4-temperature controller; 5, a fan; 6, an air inlet; 7, an air outlet; 8, a filter plate; 9-a baffle plate; 10-ultrasonic detection module; 11-an operating panel; 12-a sterilizing device; 13-a touch switch; 14-a display screen; 15-a handle; 16-a foot pad; 17-buckling; 18-power switch; 19-control panel; 20-air supply device; and 21, a thermistor.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, so that the technical solutions of the present invention can be understood and appreciated more easily.

As shown in fig. 1, the portable foot warmer of the present invention comprises a casing 1, wherein the inward concave portion of the casing 1 is a cavity for a user to place feet, a handle 15 convenient to carry is disposed above the outward portion of the casing 1, a display screen is fixedly connected to one side of the handle 15 close to the user and capable of displaying related information of the foot warmer, such as air temperature and working state of the foot warmer, and two touch switches 13 are fixedly connected to two sides of the display screen and used for controlling the foot warmer to start or close and setting air temperature.

Referring to fig. 2 and 3, the housing 1 includes a lower housing 101 and an upper housing 102 fixedly connected to the upper side of the lower housing 101 by screws. Still include fixed connection air supply arrangement and heating device in the casing 1, heating device includes PTC heater 4 (constitute with corrugated aluminum strip by PTC ceramic heating element), PTC heater 4 fixed connection is in one side on ground is kept away from to casing 101 down, air supply arrangement includes with fan 5 that the heat that PTC heater 4 produced sent out, 5 fixed connection of fan are in PTC heater 4 top, the 4 overcoat of PTC heater are equipped with aluminium base fin, increase thermal diffusion velocity to the cold wind in the passageway is generated heat in the rapid heating, and the rapid heating is sent out hot-blastly, improves the foot warmer and heats the effect.

In order to make gas get into the foot warmer and send out after heating, heating device still includes air outlet 7, fixed connection in baffle 9 in the air outlet 7 outside and with the sealed heating channel of air outlet 7 looks switch-on, heating device installs in the heating channel for the heat that the heater produced does not outwards spread, has the advantage that the heating is fast, efficient, more energy-conserving. The baffle 9 can prevent foreign matters or limbs of a user from contacting the heating channel, so as to prevent scalding;

the air supply device comprises at least one air inlet 6, a filter plate 8 fixedly connected to the air inlet, an air inlet channel communicated with the air inlet 6 and a sterilizing device 12 detachably arranged in the air inlet channel;

the air inlet channel is communicated with the upper end of the fan 5, so that the middle turning process is reduced, and air supply is smooth. The air enters the air inlet pipeline through the filter plate 8, is blown to the PTC heater 4 through the fan 5 after passing through the sterilizing device 12, is heated by the PTC heater 4 and then is discharged through the air outlet 7, and the sterilizing device 12 is an ultraviolet sterilizing lamp panel.

For the warm foot ware of audio-visual observation temperature and the convenient setting of blowing out gas, it still is provided with display screen 14 to go up one side that the casing top is close to the people, display screen 14's both sides are provided with two touch switch 13, casing 102 corresponds down go up casing 101 touch switch 13's position fixedly connected with operation panel 11, operation panel 11 and fixed connection are in casing 102 is close to the 2 electricity connections of power strip of air intake 6 down.

In order to save energy and improve safety performance, an ultrasonic detection module 10 for detecting whether a foot leaves is also detachably arranged above a cavity formed by the inward concave of the lower shell 102, and the ultrasonic detection module 10 is electrically connected with the power panel 2.

In order to improve the safety and prevent the skin of a user from being scalded due to the overhigh temperature of the blown gas, a temperature controller 4 is fixedly connected in the heating channel, and the temperature controller 4 is electrically connected with a heating device through a lead. When the heating device is used, the heating device works to enable the temperature in the heating channel to rise rapidly, when the temperature reaches a preset threshold value, the temperature controller 4 acts to cut off the connection between the heating device and the power supply, and heating is stopped. At this time, the air supply device delays for a period of time to continue air supply. After the temperature drops, temperature controller 4 is electrified again and is reset, and heating device continues work to make the warm braw temperature that air outlet 6 blew out keep at the invariable state always, the temperature is even, uses very comfortablely, has high security moreover.

In order to purify the gas entering the foot warmer, the filter plate 8 is fixedly connected to the air inlet 6 through a buckle 17, and the filter plate is an activated carbon sponge filter screen or a nylon filter screen.

In order to prevent the foot warmer from sliding, four anti-slip foot pads 16 are fixedly connected to the bottom surface of the lower shell 102 contacting the ground.

Furthermore, the fan 5 is a direct-current axial flow fan or a direct-current cross flow fan, has the advantages of low energy consumption, high air volume and quiet running, and can accelerate the exchange of cold and hot air in a room and enhance the heating effect.

Particularly, the shell of the portable foot warmer is provided with the lifting handle 15, so that the portable foot warmer is convenient to carry and can be used in different places by users. After the power supply is turned on, the touch switch 13 is pressed, the foot warmer works after the mode is selected, the fan 5 rotates, gas enters the air inlet channel through the filter plate 8 and then is blown to the heating channel by the fan 5, the gas is heated by the PTC heater 3 in the heating channel and is discharged from the air outlet 7, and therefore heating is provided for feet of a user. The heating channel is also internally provided with a temperature controller 4, when the temperature is too high, the temperature controller 4 works to cut off the power supply, the safety performance of the foot warmer is improved, and the temperature of the discharged warm air is constant and comfortable. The sterilization device 12 and the ultrasonic detection module 10 can be installed or disassembled according to the requirements of users, so as to provide diversified selections for the customers.

The invention discloses a control circuit of a portable foot warmer, which comprises a power switch 18, a temperature controller 4, a control panel 19, a PTC heating element 3, a power panel 2, an air supply device 20, an ultrasonic detection module 10, a sterilization device 12 and a thermistor 21, and is characterized in that: the power switch 18, the temperature controller 4, the PTC heating element 3 and the coil of the power panel 2 are connected in series in sequence to form a loop; the power panel 2 is connected in parallel with the air supply device 20, the ultrasonic detection module 10, the sterilization device 12 and the control panel 19, and the control panel 19 is connected in series with the thermistor 21.

Control circuit principle: the power cord is connected to the power supply, the power switch 18 is turned on, and the current passes through the normally closed temperature switch thermostat 4 and enters the AC-L input terminal of the power panel 2, at which point the control panel 19 is ready for operation. The switch key on the control panel 19 is pressed, the control panel 19 transmits information to the power panel 2, the air supply device 20 starts to work at first, and then the sterilization device 12, the ultrasonic detection module 10 and the PTC heating body 3 work simultaneously or separately, so that the purposes of heating, sterilization and detection are achieved, wherein the sterilization device 12 and the ultrasonic detection module 10 are selectable. The mode key on the control board 19 is used for switching different working modes, and the working modes are distinguished by high and low temperatures and can be divided into a plurality of working modes. The temperature sampling NTC thermistor 21 transmits the temperature information to the control board 19, which controls the operation time of the PTC heater 3 according to the operation mode set by the user, wherein the operation modes are embodied in different operation times of the PTC heater 3. When the internal temperature of the product reaches the rated value of the temperature controller 2, the normally closed temperature switch is switched off, the whole power utilization circuit is powered off, and people and objects are safely protected from being injured.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The invention is described above with reference to the accompanying drawings, it is obvious that the implementation of the invention is not limited in the above manner, and it is within the scope of the invention to adopt various modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. The utility model provides a portable warm foot ware, includes the casing and fixed connection air supply arrangement (20) and heating device in casing (1), its characterized in that: the casing includes casing (101) and fixed connection and is in lower casing (102) of last casing (101) bottom, the top fixedly connected with handle (15) of going up casing (101), heating device includes PTC heater (3), PTC heater (3) fixed connection is in the one side on ground is kept away from to casing (102) down, air supply arrangement (20) including with fan (5) that the heat that PTC heater (3) produced sent out, fan (5) fixed connection be in PTC heater (3) top.

2. The portable foot warmer of claim 1, wherein: the heating device also comprises an air outlet (7), a baffle plate (9) fixedly connected to the outer side of the air outlet (7) and a heating channel communicated with the air outlet (7);

the air supply device (20) comprises at least one air inlet (6), a filter plate (8) fixedly connected to the air inlet, an air inlet channel communicated with the air inlet (6) and a sterilizing device (12) detachably arranged in the air inlet channel;

the air inlet channel is communicated with the upper end of the fan (5), air enters the air inlet pipeline through the filter plate (8), is blown to the PTC heater (3) through the fan after passing through the sterilizing device (12), and is discharged through the air outlet (7) after being heated by the PTC heater (3).

3. The portable foot warmer of claim 1, wherein: go up casing (101) top and still be provided with display screen (14) near one side of people, near being provided with at least one touch switch (13) of display screen (14), the casing corresponds down go up casing (101) touch switch's position fixedly connected with operation panel (11), operation panel (11) and fixed connection are in casing (102) are close to power strip (2) electricity connection of air intake (6) down.

4. The portable foot warmer of claim 1, wherein: an ultrasonic module (10) for detecting whether a foot leaves is also detachably arranged above a cavity formed by inwards recessing the lower shell (102), and the ultrasonic module (10) is electrically connected with the power panel (2).

5. The portable foot warmer of claim 2, wherein: and a temperature controller (4) is fixedly connected in the heating channel.

6. The portable foot warmer of claim 2, wherein: the filter (8) is fixedly connected to the air inlet (6) through a buckle (17), and the filter (8) is an activated carbon sponge filter screen or a nylon filter screen.

7. The portable foot warmer of claim 2, wherein: the sterilizing device (12) is an ultraviolet sterilizing lamp panel.

8. The portable foot warmer of claim 1, wherein: the bottom surface of the lower shell (102) contacting with the ground is fixedly connected with a plurality of anti-skid foot pads (16).

9. The portable foot warmer of claim 1, wherein: the fan (5) is a direct-current axial flow fan or a direct-current cross-flow fan.

10. The utility model provides a control circuit of portable warm foot ware, includes switch (18), temperature controller (4), control panel (19), PTC heat-generating body (3), power strip (2), air supply arrangement (20), ultrasonic detection module (10), sterilizing equipment (12) and thermistor (21), its characterized in that: the power switch (18), the temperature controller (4), the PTC heating element (3) and the coil of the power panel (2) are sequentially connected in series to form a loop; the power panel (2) is connected with the air supply device (20), the ultrasonic detection module (10), the sterilization device (12) and the control panel (19) in parallel, and the control panel (19) is connected with the thermistor (21) in series.