WO2015089692A1 - Appareil de séchage électronique pour aide auditive - Google Patents

Appareil de séchage électronique pour aide auditive Download PDF

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Publication number
WO2015089692A1
WO2015089692A1 PCT/CN2013/089477 CN2013089477W WO2015089692A1 WO 2015089692 A1 WO2015089692 A1 WO 2015089692A1 CN 2013089477 W CN2013089477 W CN 2013089477W WO 2015089692 A1 WO2015089692 A1 WO 2015089692A1
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WO
WIPO (PCT)
Prior art keywords
circuit
hearing aid
heating
temperature
heat generating
Prior art date
Application number
PCT/CN2013/089477
Other languages
English (en)
Chinese (zh)
Inventor
徐炜
徐斌
吴秋麒
Original Assignee
苏州立人听力器材有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州立人听力器材有限公司 filed Critical 苏州立人听力器材有限公司
Priority to PCT/CN2013/089477 priority Critical patent/WO2015089692A1/fr
Publication of WO2015089692A1 publication Critical patent/WO2015089692A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
    • F26B9/066—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers the products to be dried being disposed on one or more containers, which may have at least partly gas-previous walls, e.g. trays or shelves in a stack
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good

Definitions

  • the present invention relates to a dryer, and more particularly to an electronic dryer for a hearing aid.
  • Hearing aids are delicate and valuable items. However, in the course of their use, they are inevitably exposed to moisture from the air and moisture in the ear. Therefore, in daily maintenance work, it is essential to eliminate moisture. The measures will directly affect the service life and use effect of the hearing aid.
  • the traditional method is to place the hearing aid in a container with a built-in desiccant.
  • This drying method has the following drawbacks:
  • the desiccant contains carcinogens and has the potential to seriously damage the health of the user; at the same time, the desiccant
  • the product contains tiny debris that can enter the hearing aid and cause blockages that affect the life of the hearing aid.
  • the invention overcomes the deficiencies of the prior art and provides an electronic dryer for a hearing aid with a stable thermostatic process, small temperature fluctuations and high temperature control precision.
  • an electronic dryer for a hearing aid comprising a housing, a drying device, and a cover for opening and closing with the housing, the cover and the case
  • the body forms a receiving cavity for housing the hearing aid
  • the drying device comprises at least two sets of independently operating heat generating units
  • the heat generating unit comprises a heating element electrically connected to each other, a power supply circuit and a main control circuit.
  • the electronic dryer for the hearing aid further comprises a different number of heat generating elements in each of the sets of firing cells.
  • the electronic dryer for the hearing aid further comprises a uniform distribution of the heating elements in each set of firing cells.
  • the electronic dryer for the hearing aid further includes the heat generating elements of the respective sets of heat generating units spaced apart from each other.
  • the electronic dryer for the hearing aid further comprises the at least two sets of heat generating units sharing a set of the power supply circuit and the main control circuit.
  • the electronic dryer for the hearing aid further includes the power circuit including a USB port.
  • the electronic dryer for the hearing aid further includes a temperature collecting circuit, the temperature collecting circuit includes a plurality of temperature sensors, and the output ends of the plurality of temperature sensors are connected to the The main control circuit is connected.
  • the electronic dryer for the hearing aid further includes a keying circuit and a reset circuit, and the keying circuit and the reset circuit are both connected to the main control circuit.
  • the electronic dryer for the hearing aid further includes the heat generating unit further comprising a photocoupler connected to the main control circuit and a bidirectional thyristor connected to the photocoupler. To control the conduction or disconnection of the heating element.
  • the electronic dryer for the hearing aid further includes a display circuit and a battery detection circuit, the display circuit and the battery detection circuit being coupled to the main control circuit.
  • the invention solves the defects existing in the background art, and has the advantages of strong and thorough sterilization and disinfection by the strong high-intensity irradiation of ultraviolet light of 254 nm and the strong oxidation of ozone generated by the combination of ultraviolet light and air of 185 nm. It does not use any chemicals, it does not cause secondary pollution, and it is easy to operate. It has the advantages of safety, high efficiency and greenness.
  • the safety switch can prevent ultraviolet light from burning eyes and skin, ensuring user safety and improving the setting of specular reflection layer.
  • the irradiation intensity and irradiation range of ultraviolet light have good sterilization effect.
  • Figure 1 is a schematic view showing the structure of a preferred embodiment 1 of the present invention.
  • Figure 2 is an internal front view of a preferred embodiment 1 of the present invention
  • FIG. 3 is a schematic structural view of a heat generating component partition according to a preferred embodiment 1 of the present invention.
  • Figure 4 is another internal front view of a preferred embodiment 1 of the present invention.
  • Figure 5 is a schematic block diagram of a preferred embodiment 1 of the present invention.
  • Figure 6 is a circuit diagram of a preferred embodiment 1 of the present invention.
  • Figure 7 is a temperature trend diagram of a preferred embodiment 1 of the present invention.
  • Figure 8 is a schematic structural view of a preferred embodiment 2 of the present invention.
  • Figure 9 is an internal front view of a preferred embodiment 2 of the present invention.
  • Figure 10 is a schematic structural view of a heat generating component partition according to a preferred embodiment 2 of the present invention.
  • Figure 11 is a circuit diagram of a preferred embodiment 2 of the present invention.
  • Figure 12 is a schematic structural view of a preferred embodiment 3 of the present invention.
  • Figure 13 is an internal front view of a preferred embodiment 3 of the present invention.
  • Figure 14 is a schematic structural view of a heat generating component partition according to a preferred embodiment 3 of the present invention.
  • Figure 15 is a circuit diagram of a preferred embodiment 3 of the present invention.
  • Figure 16 is a block diagram showing the structure of a heat generating component according to a preferred embodiment 4 of the present invention.
  • Figure 17 is a schematic view showing the structure of a heat generating element section of a preferred embodiment 5 of the present invention. detailed description
  • an electronic dryer for a hearing aid comprises a housing 2, a drying device and a cover 4 connected to the housing 2, and the cover 4 can be arranged to be transparent.
  • the housing 2 forms a receiving cavity 6 for housing the hearing aid
  • the drying device comprises at least two sets of independently operating heating units, the heating unit comprising a heating element electrically connected to each other, a power supply circuit 8 and a main control circuit 10.
  • the number of heat generating elements in each group of heat generating units is different.
  • the heat generating elements in each set of heat generating units are evenly distributed. Further, it is preferred that the heat generating elements in each of the heat generating units are spaced apart from each other.
  • At least two sets of heat generating units share a set of power supply circuit 8 and main control circuit 10.
  • the power circuit 8 is supplied with +5V DC power from the adapter for powering each circuit.
  • the utility model comprises a USB port, a diode VD and a filter capacitor C1.
  • the anode of the diode VD is connected with the power pin of the USB port
  • the cathode of the diode VD is connected with the anode of the filter capacitor C1
  • the cathode of the filter capacitor C1 is connected with the ground pin of the USB port.
  • the diode VD acts as a polarity protection
  • C1 is the filter capacitor
  • the USB port is set so that the user can get the +5V power from the computer or mobile phone charger.
  • the main control circuit 10 uses ATC12C2052 single-chip microcomputer U as the main control MCU, 12 ⁇ z crystal oscillator G to meet the control speed and real-time performance.
  • the temperature collecting circuit 12, the keying circuit 14 and the reset circuit 16, the temperature collecting circuit 12, the keying circuit 14 and the reset circuit 16 are all connected to the main control circuit 10.
  • the temperature collecting circuit 12 uses a plurality of temperature sensors.
  • the temperature sensor is a single-bus intelligent digital temperature sensor DS18B20, which is ST1-STn, respectively, and n is a positive integer greater than or equal to 1.
  • ST1-STn's power supply pin GND is connected together, the power input terminal Vcc is connected together and is +5V straight with the power supply circuit.
  • the power supply is connected, and the digital signal input and output terminals DQ are connected together and connected to the P3.
  • 3 port of the single chip U Only one port line can be used for two-way communication between DS18B20 and single-chip U, and multiple DS18B20 temperature sensors can be connected on one bus to realize multi-point network temperature measurement and high temperature measurement accuracy.
  • the keying circuit 14 includes SB1, SB1 - key multifunction. Press once, timing 2h, can be heated continuously for 2 hours; press twice, timing 4h, can be heated continuously for 4h ; press three times, timing 6h, can be heated continuously for 6 hours. Set three times for one cycle, press the fourth time to enter the next cycle, press the fourth time for the timing 2h, press the fifth time for the timing 4h, press the sixth time for the timing for 6h, and so on. Press and hold SB1 to set the cancel and shut down.
  • the reset circuit 16 includes C2 and R3, and the system is automatically reset upon power-on. At the beginning of power-on, that is, when the Vcc power supply is turned on, since the voltage on the capacitor C2 cannot be abrupt, the C2 voltage is equivalent to a short circuit at the instant of power-on, and the voltage of the Vcc power supply falls on R3.
  • the RST port of U can reset the microcontroller as long as it meets the high level applied to RST for 24 oscillation cycles.
  • the display circuit 18 and the battery detecting circuit 20 can also be provided.
  • the display circuit 18 employs an LED light emitting diode as a timing selection indicator.
  • HL1 When the SB1 button is pressed once, HL1 is illuminated, indicating that the timing is 2h, and it can be heated continuously for 2 hours; when the SB1 button is pressed twice, HL2 is illuminated, indicating that the timing is 4h, and it can be heated continuously for 4 hours; when the SB1 button is pressed three times, HL3 is illuminated, It means that the timing is 6h, and it can be heated continuously for 6 hours. Press and hold SB1 to set the cancel and shut down.
  • the battery detecting circuit 20 detects the battery voltage from the PL 0 port of the single chip microcomputer.
  • the battery When testing, the battery is placed in the detecting groove 22 of the casing 2, and is pushed to the pole piece in the detecting groove 22 (not shown). Out) Good contact, you can know the quality of the battery, the positive pole of the pole piece is connected with the P1. 0 port of the single-chip U, the pole The negative pole of the chip is grounded, and the test result is output by PI. 4, PI. 5, PI. 6, and PI. 7, and the LED lights HL4, HL5, HL6, and HL7 are turned on and off.
  • HL4 is on, indicating that the battery has failed, replacing the new battery
  • HL5 is on, indicating that the battery is under-powered, replacing the new battery
  • HL6 is on, indicating that the battery is low, but it is still usable
  • HL7 is on, indicating that the battery is fully charged and safe to use.
  • Each group of heating elements includes a heating element Rfzn and a triode VTn, and the triode VTn is preferably a ⁇ -type triode, and a plurality of heating elements Rfzn of each group of heating units are connected in parallel, one end of the parallel connection is connected with a +5V DC power source, and the other end is connected with a corresponding triode
  • the emitter of VTn is connected, the base of each transistor VTn is connected to the main control circuit 10, and the collector is connected to the ground.
  • At least two sets of heat generating units are connected in parallel to form a drying circuit 24.
  • the drying circuit 24 preferably includes three sets of independently operating heat generating units, including three sets of heating elements Rfzl, Rfz2, Rfz3, and three triodes respectively connected to the three sets of heating elements.
  • VT1, VT2, VT3, three sets of heating elements are applied on the PCB board 26
  • three sets of heating elements are arranged on the PCB board 26, and each set of heating elements is evenly distributed, in order to avoid direct contact between the heating elements and the hearing aid, avoiding the hearing aid
  • the damage is arranged above the three sets of heating elements with a shelf 30 with a venting opening 28.
  • the hot air emitted by the heating element can go up along the venting opening 28, and the hearing aid is placed on the shelf 30 to be dried.
  • the shelf 30 can also be vertical. Straight.
  • the three groups of heating elements include A, B, and C groups respectively.
  • group A heating elements include five Rfzl
  • group B heating elements include eight Rfz2
  • group C heating elements include 12 Rfz3, and five Rfzl are connected in parallel with one end and + 5V DC power supply connection
  • the other end is connected with the emitter of transistor VT1, 8 Rfz2 is connected in parallel and the end is connected with +5V DC power supply
  • the other end is connected with the emitter of transistor VT2
  • 12 Rfz3 is connected in parallel and the end is connected with +5V DC power supply.
  • the other end is connected to the emitter of the triode VT3.
  • the bases of the triodes VT1, VT2, and VT3 are respectively connected to the P3. 4 port, the P3.
  • the drying circuit 24 is provided with three heating zones, and is commanded by the single-chip microcomputer to realize sub-period, sub-section alternately, crossover, and superimposed heating, thereby keeping the temperature of the electronic dryer constant.
  • the MCU issues a command, P3. 4 port, P3. 5 port, P3. 7 port low level makes the triode VT1, VT2, VT3 turn on, Rfzl, Rfz2, Rfz3 get electric heating; P3. 4 port, P3. 5 port, P3.
  • the transistors VT1, VT2, and VT3 are turned off, and Rfzl, Rfz2, and Rfz3 are de-energized to stop generating heat.
  • Rfzl, Rfz2, and Rfz3 all use SMD PTC linear thermistors. Since the chip type linear thermistor is made of PTC material with a positive temperature coefficient, when the thermistor is heated by current, the temperature rises and its resistance corresponds. When it is increased, the passing current is correspondingly reduced, and the amount of heat generation is also correspondingly reduced, and the temperature is correspondingly lowered to be in a constant temperature state, and the temperature is automatically regulated.
  • the heating element uses 25 patch-type PTC linear thermistors, dense array layout, applied to the PCB. There are many hot spots, dense and thin, and there are no dead ends in the distribution. It has the characteristics of uniform heating and fast heating.
  • the PTC material has a positive temperature coefficient, the chip thermistor is energized and heated, the temperature rises, and the resistance increases accordingly, so the current passing through is correspondingly reduced, the heat generation is also reduced, and the temperature is correspondingly decreased and is in a constant temperature state, having an automatic Regulate temperature performance.
  • the sub-area divides the arrangement position of the heating elements into a plurality of areas; the time division divides the entire heating and drying process into several time periods.
  • Fig. 2 is a schematic diagram showing the division of the three regions of the present embodiment: there are five heating elements Rfzl in the A region, eight heating elements Rfz2 in the B region, and twelve heating elements Rfz3 in the C region.
  • the above arrangement is based on the principle that the heating elements are evenly distributed and the heat is uniform.
  • the heating element in Zone A is at least because the A zone works during the first period of insulation and the residual heat is the largest.
  • a disinfection circuit 32 can be provided for sterilizing the hearing aid to ensure the health of the user.
  • the disinfection circuit 32 includes at least one ultraviolet light pipe 34 controlled by the P3. 0 port of the single chip U, the ultraviolet light pipe 34 emits ultraviolet light having a wavelength of 200-280 nm, and the ultraviolet light pipe 34 is illuminated by the electronic ballast API.
  • Ultraviolet light with a wavelength of 200-280mn can disinfect the hearing aid, especially the central wave
  • Ultraviolet light with a length of 254 nm is easily absorbed by living organisms, and acts on DNA and RNA of living organisms to cause damage to bacteria and viruses.
  • High-intensity ultraviolet light can be sterilized in a short time, against bacterial propagules. It only takes 1 second to kill.
  • Ultraviolet light close-range high-intensity irradiation can kill more than 99.9% of bacterial spores on the surface of the object, and it has extremely strong sterilization effect on any bacteria and
  • a safety switch 36 can be provided, and the safety switch 36 is turned on or off by the opening and closing of the cover 4.
  • the safety switch 36 is a Hall switch, and a magnet 38 can be disposed on the inner wall of the cover 4, and the magnet 38 is adjacent to the safety switch 36 when the cover 4 is closed.
  • the safety switch 36 outputs a signal to the single-chip U. P3. 1 port, cut off the power of the ultraviolet tube 34, and the ultraviolet tube 34 is extinguished, thereby fully protecting the safety of the user and avoid burning the eyes and skin.
  • the safety switch 36 is not limited to the Hall switch, and may be a pressure switch.
  • the pressure switch may be disposed in the housing 2, and the pressure switch is contacted when the cover 4 is closed. When the cover 4 is opened, the pressure disappears and there is a pressure change. , the conduction or cutting of the ultraviolet tube 34 is achieved.
  • the ultraviolet light can be directly radiated and reflected to the hearing aid, thereby improving the irradiation intensity and the irradiation range of the ultraviolet light, and the sterilization effect is good.
  • the specularly reflective layer 40 can be a lens, a metal mirror patch, a reflective film or a plated layer, the lens can be a glass mirror; and the metal mirror patch can be a stainless steel plate.
  • the specular reflection layer 40 is provided on the inner wall of the housing chamber 6 opposite to the ultraviolet light tube 34.
  • the specular reflection layer 40 may be provided on the inner wall of the cover 4, as shown in Fig. 5, as well as the irradiation intensity and irradiation range of the ultraviolet light.
  • the secondary sterilization and disinfection are set in the whole process of heating, and the work is automatically started when entering the first holding period and the second holding period respectively, and the ultraviolet tube 34 emits ultraviolet light having a wavelength of 200-280 nm, and the generated ultraviolet light can be generated.
  • the specular reflection layer 40 directly radiates and reflects to the hearing aid, and has a large irradiation intensity and a large irradiation range, and is completely sterilized and disinfected, and is automatically extinguished every ten minutes.
  • the safety switch 36 transmits a signal to the single-chip microcomputer U, and the single-chip microcomputer U shifts to the emergency interrupt program to cut off the power of the ultraviolet light pipe 34, and the ultraviolet light tube 34 is extinguished, thereby fully protecting the safety of the user.
  • the original heat preservation program will be automatically interrupted and the supplementary heating program will be preferentially entered.
  • the priority supplementary heating program will be automatically exited to resume the insulation process.
  • the insulation program is interrupted and the emergency program for cutting off the heating element is preferentially entered.
  • the emergency program is automatically exited to resume the insulation process.
  • an electronic dryer for a hearing aid comprises a housing 2 , a drying device and a cover 4 connected to the housing 2 , and the cover 4 and the housing 2 form a hearing aid.
  • the number of heat generating elements in each group of heat generating units is different.
  • the fever in each group of heat generating units The components are evenly distributed. It is further preferred that the heat generating elements in each group of heat generating units are spaced apart from each other.
  • At least two sets of heat generating units share a set of power supply circuit 8 and main control circuit 10.
  • the power supply circuit 8 is supplied by the mains 220V-channel to the heating unit, and the other is via the 5V/2A switching power supply AP2 output +5V DC power supply for each circuit.
  • the rectifier diode VD acts as a polarity protection and C1 acts as a filter capacitor.
  • R6C6, R9C7, ..., Rm+2Cn are connected to the VG1, VG2, ..., VGi side, respectively, to form a RC absorption circuit, which absorbs the surge voltage and acts as an overvoltage protection on the component side.
  • the main control circuit 10 uses the ATmega8 microcontroller U1 as the master MCU, 28 pins. 12 ⁇ z crystal oscillator G to meet control speed and real-time performance.
  • the temperature collecting circuit 12, the keying circuit 14 and the reset circuit 16, the temperature collecting circuit 12, the keying circuit 14 and the reset circuit 16 are all connected to the main control circuit 10.
  • the temperature collecting circuit 12 uses a plurality of single-bus intelligent digital temperature sensors DS18B20, which are respectively connected to the power supply ground GND of STl-STno ST1 and STn, and the power input terminal Vcc is connected together and connected with the +5V DC power supply provided by the power circuit.
  • the digital signal input and output terminals DQ are connected together and connected to the PD2 port of the single chip U1. Only one port line can be used for two-way communication between DS18B20 and single-chip U1, and multiple DS18B20 temperature sensors can be connected on one bus to realize multi-point network temperature measurement and high temperature measurement accuracy. In the actual application, no external components are required, and no A/D conversion is required, and the digital temperature signal can be directly output.
  • the keying circuit 14 includes SB1, SB1 - key multifunction. Press once, timing 2h, can be heated continuously for 2 hours; press twice, timing 4h, can be heated continuously for 4h ; press three times, timing 6h, can be heated continuously for 6 hours. Set three times for one cycle, press the fourth time to enter the next cycle, press the fourth time for the timing 2h, press the fifth time for the timing 4h, press the sixth time for the timing for 6h, and so on. Long press SB1, then set to take Cancel, shut down.
  • the reset circuit 16 includes C2 and R1, and the system is automatically reset upon power-on. At the beginning of power-on, just when the Vcc power supply is turned on, since the voltage on the capacitor C2 cannot be abrupt, the C2 voltage is equivalent to a short circuit at the instant of power-on, and the voltage of the Vcc power supply falls on R1. PC6/RST port, as long as the high level added to RST can last for 24 oscillation cycles, the microcontroller can be reset.
  • the display circuit 18 and the battery detecting circuit 20 can also be provided.
  • the display circuit 18 uses a S012864FPD-12CSBE dot matrix liquid crystal module LCD to display text, symbols and graphics.
  • the battery detection circuit 20 uses the analog-to-digital converter ADC of the ATmega8 microcontroller U1 to detect the battery voltage to determine the quality of the battery.
  • the ATmegaS microcontroller provides six successive approximation ADCs.
  • the four channels of ADC0-ADC3 provide 10-bit conversion accuracy.
  • the ADC4 and ADC5 channels only provide 8-bit conversion accuracy.
  • This circuit uses ADC0 to detect the level of the voltage. During the test, as long as the battery is placed in the detecting recess 22 of the housing 2 and pushed into contact with the pole piece (not shown) in the detecting recess 22, the battery is good or bad.
  • the positive pole is connected to the PC0 port of the single chip U1, and the negative pole of the pole piece is grounded.
  • the test results are displayed by the LCD in graphics and text. There are 4 states: When the battery graphic is a space, the text indicates that the battery is invalid; when the battery graphic has a grid, the text display is underpowered; when the battery graphic has two grids, the text indicates that the battery is low; When the power is three grids full, the text shows that the battery is fully charged.
  • the heat generating unit further includes a photocoupler connected to the main control circuit 10 and a bidirectional thyristor connected to the photocoupler for controlling conduction or disconnection of the heat generating component.
  • At least two sets of heating units are connected in parallel to form Drying circuit 24, drying circuit 24 includes at least two triacs VG1-VGi, at least two photocouplers IC1-ICi, at least two sets of independently operating heating elements Rfzl-Rfzi, etc., i is greater than or equal to 2
  • i is greater than or equal to 2
  • at least two sets of heating elements are applied to the PCB board 26
  • at least two sets of heating elements are arranged on the PCB board 26, and each set of heating elements is evenly distributed.
  • the upper part of the heating element is disposed.
  • the hearing aid is placed on the shelf 30 to be dried.
  • the shelf 30 can also be placed vertically.
  • a plurality of heating elements of each group of heating units are connected in parallel, one end is connected to the triac, and the other end is connected to the 220V mains.
  • the two-way thyristor has high withstand voltage and high reliability, and can have power output in both full positive and negative half cycles of the waveguide, which improves the heating efficiency.
  • the triggering of the two-way thyristor is performed by using a photocoupler, and the drying circuit 28 is optically isolated from the control circuit for safety.
  • Rfzl-Rfzn uses a patch PTC thermistor. Since the chip type linear thermistor is made of PTC material and has a positive temperature coefficient, when the thermistor generates heat through the current, the temperature rises, the resistance increases correspondingly, the current passing through is correspondingly reduced, and the heat is generated. It is also correspondingly reduced, the temperature is correspondingly lowered and is in a constant temperature state, and has the property of automatically regulating the temperature.
  • the photocouplers IC1, IC2, and IC3 When the MCU PB1, PB2, and PB3 ports are low level, the photocouplers IC1, IC2, and IC3 output trigger currents, respectively triggering VG1, VG2, VG3, and Rfzl. , Rfz2, Rf z3 electric heating up; When the MCU PB1, PB2, PB3 port is high level, the optocoupler IC1, IC2, IC3 is cut off, turn off VG1, VG2, VG3, then Rfzl, Rfz2, Rfz3 lose power and stop heating .
  • the heating element uses 25 patch-type PTC linear thermistors in a dense array layout, which is applied to the PCB. There are many hot spots, dense and thin, and there are no dead ends in the distribution. It has the characteristics of uniform heating and fast heating.
  • the PTC material has a positive temperature coefficient, the chip thermistor is energized and heated, the temperature rises, and the resistance increases accordingly, so the current passing through is correspondingly reduced, the heat generation is also reduced, and the temperature is correspondingly decreased and is in a constant temperature state, having an automatic Regulate temperature performance.
  • the sub-area divides the arrangement position of the heating elements into a plurality of areas; the time division divides the entire heating and drying process into several time periods.
  • Fig. 2 is a schematic view showing the division of the three regions of the present embodiment: there are five heating elements Rfz l in the A region, eight heating elements Rfz2 in the B region, and twelve heating elements Rfz3 in the C region.
  • the above arrangement is based on the principle that the heating elements are evenly distributed and the heat is uniform.
  • the heating element in Zone A is at least because the A zone works during the first period of insulation and the residual heat is the largest.
  • a disinfection circuit 32 can be provided for sterilizing the hearing aid to ensure the health of the user.
  • the disinfecting circuit 32 includes at least one set of first ultraviolet tubes 34, at least one set of second ultraviolet tubes 36, a dedicated electronic ballast AP1 that illuminates the first ultraviolet tubes 34 and the second ultraviolet tubes 36, controlled In the PC3 port of the single chip U1, when the PC3 port is at a high level, the first ultraviolet light pipe 34 emits ultraviolet light having a wavelength of 200-280 nm, and the second ultraviolet light pipe 36 emits ultraviolet light having a wavelength of 160-200 nm. Ultraviolet light with a wavelength of 200-280nm can disinfect the hearing aid.
  • UV light with a center wavelength of 254nm is easily absorbed by the organism, and it acts on the DNA and RNA of the organism, causing it to be destroyed and causing the death of bacteria and viruses.
  • High-intensity ultraviolet light can be sterilized in a short period of time, and it takes only one second to kill the bacterial propagules.
  • Ultraviolet light close-range high-intensity irradiation can kill the bacterial spores on the surface of the object by 99.9% or more. And it has extremely strong sterilization effect on any bacteria and viruses; ultraviolet light with a wavelength of 160-200TM can react with air to generate ozone, especially ultraviolet light with a central wavelength of 185 ⁇ and air to produce strong oxidation.
  • the double bactericidal action of the first ultraviolet tube 34 and the second ultraviolet tube 36 makes sterilization more thorough.
  • the first ultraviolet tube 34 and the second ultraviolet tube 36 are both disposed on the inner wall of the housing chamber 6.
  • the shelf 31 is a light-transmitting shelf, and the shelf 31 may be made of quartz glass, calcium fluoride or the like, and at least one of the first ultraviolet light pipe 34 and the second ultraviolet light pipe 36 is located below the shelf 31.
  • the first ultraviolet light pipe 34 is disposed under the shelf 31, and the generated ultraviolet light can pass through the shelf 31 to sterilize the hearing aid.
  • a safety switch 38 is also included, and the safety switch 38 is turned on or off by the opening and closing of the cover 4, and the safety switch 38 is connected to the PD3 port of the single chip U1 through the inverter IC.
  • the safety switch 38 is designed to protect the eyes and skin from UV light and to protect the user's safety.
  • the safety switch 38 is a Hall switch, and a magnet 40 can be disposed on the inner wall of the cover 4, and the magnet 40 is adjacent to the safety switch 38 when the cover 4 is closed. When the cover 4 is opened, the safety switch 38 outputs a signal to the single chip U1.
  • the PD3 port cuts off the power of the first ultraviolet tube 34 and the second ultraviolet tube 36, and the first ultraviolet tube 34 and the second ultraviolet tube 36 are extinguished, thereby fully protecting the safety of the user and avoid burning the eyes and skin.
  • the safety switch 38 is not limited to the Hall switch, and may be a pressure switch.
  • the pressure switch may be disposed in the housing 2, and the pressure switch may be contacted when the cover 4 is closed. When the cover 4 is opened, the pressure disappears and there is a pressure change. Turning on or off the first ultraviolet tube 34 and the second ultraviolet tube 36.
  • the specularly reflective layer 42 can be a lens, a metal mirror patch, a reflective film or a plated layer, the lens can be a glass mirror; and the metal mirror patch can be a stainless steel plate.
  • the LCD displays the instantaneous temperature
  • the MCU issues a command
  • the PB2 and PB3 ports output a high level to turn off the heating main circuit B. Heating zone and C heating zone.
  • the whole machine enters the first holding period, and only the A heating zone performs compensation heating to keep the temperature constant.
  • the single-chip PB1 port outputs a high level to turn off the A heating zone
  • the PB3 port outputs a low level to open the C heating zone for heating and insulation.
  • the PB3 port of the single-chip microcomputer outputs a high-level shutdown C heating zone, and the PB1 and PB2 ports output a low-level open A heating zone and a B heating zone to supplement heating until the end of the timing 4h.
  • the secondary sterilization and disinfection are set in the whole process of heating, and the work is automatically started when entering the first holding period and the second holding period respectively, and the first ultraviolet tube 34 and the second ultraviolet tube 36 respectively emit ultraviolet light of 254 nm.
  • the generated ultraviolet light can be directly radiated and reflected to the hearing aid through the specular reflection layer 42, the irradiation intensity and the irradiation range are large, sterilization and disinfection is complete, and it is automatically extinguished every ten minutes.
  • the safety switch 38 transmits a signal to the single chip U1, and the single chip U1 is switched to the emergency interrupt program to cut off the power of the first ultraviolet tube 34 and the second ultraviolet tube 38, and the first ultraviolet tube 34 And the second ultraviolet tube 36 is extinguished, thereby fully protecting the safety of the user.
  • the original heat preservation program will be automatically interrupted and the supplementary heating program will be preferentially entered.
  • the priority supplementary heating program will be automatically exited to resume the insulation process.
  • the insulation program is interrupted and the emergency program for cutting off the heating element is preferentially entered.
  • the emergency program is automatically exited to resume the insulation process.
  • an electronic dryer for a hearing aid comprises a housing 2, a drying device and a cover 4 connected to the housing 2, and the cover 4 and the housing 2 form a hearing aid for receiving the hearing aid.
  • Containing cavity 6 The drying device comprises at least two sets of independently operating heat generating units, the heat generating unit comprising a heating element electrically connected to each other, a power supply circuit 8 and a main control circuit 10.
  • the number of heat generating elements in each group of heat generating units is different.
  • the heat generating elements in each set of heat generating units are evenly distributed. It is further preferred that the heat generating elements in each group of heat generating units are spaced apart from each other.
  • At least two sets of heat generating units share a set of power supply circuit 8 and main control circuit 10.
  • the power circuit 8 is supplied with +5V DC power from the adapter for powering each circuit.
  • the utility model comprises a USB port, a diode VD and a filter capacitor C1.
  • the anode of the diode VD is connected with the power pin of the USB port
  • the cathode of the diode VD is connected with the anode of the filter capacitor C1
  • the cathode of the filter capacitor C1 is connected with the ground pin of the USB port.
  • the diode VD acts as a polarity protection
  • C1 is the filter capacitor
  • the USB port is set so that the user can get the +5V power from the computer or mobile phone charger.
  • the main control circuit 10 uses the ATmega8 microcontroller U1 as the master MCU, 28 pins. 12 questions z crystal oscillator G to meet the control speed and real-time.
  • the temperature collecting circuit 12, the keying circuit 14 and the reset circuit 16, the temperature collecting circuit 12, the keying circuit 14 and the reset circuit 16 are all connected to the main control circuit 10.
  • the temperature acquisition circuit 12 uses a plurality of single-bus intelligent digital temperature sensors DS18B20, which are respectively STl-STn.
  • ST1 is connected to STn's power supply ground GND.
  • the power input terminal Vcc is connected together and connected to the +5V DC power supply provided by the power circuit.
  • the digital signal input and output terminals DQ are connected together and connected to the PD2 port of the microcontroller U1. Only one port line can be used for two-way communication between DS 18B20 and single-chip U1, and multiple DS 18B20 temperature sensors can be connected on one bus to realize multi-point network temperature measurement and high temperature measurement accuracy. In the actual application, no external components are required, and no A/D conversion is required, and the digital temperature signal can be directly output.
  • the keying circuit 14 includes SB1, SB1 - key multifunction. Press once, timing 2h, continuous heating 2 Hours; Press twice, timing 4h, can be heated continuously for 4h ; press three times, timing 6h, can be heated continuously for 6 hours. Set three times for one cycle, press the fourth time to enter the next cycle, press the fourth time for the timing 2h, press the fifth time for the timing 4h, press the sixth time for the timing for 6h, and so on. Press and hold SB1 to set the cancel and shut down.
  • the reset circuit 16 includes C2 and R1, and the system is automatically reset upon power-on. At the beginning of power-on, just when the Vcc power supply is turned on, since the voltage on the capacitor C2 cannot be abrupt, the C2 voltage is equivalent to a short circuit at the instant of power-on, and the voltage of the Vcc power supply falls on R1. PC6/RST port, as long as the high level added to RST can last for 24 oscillation cycles, the microcontroller can be reset.
  • the display circuit 18 and the battery detecting circuit 20 can also be provided.
  • the display circuit 18 uses a S012864FPD-12CSBE dot matrix liquid crystal module LCD to display text, symbols and graphics.
  • the battery detection circuit 20 uses the analog-to-digital converter ADC inside the ATmega8 microcontroller U1 to detect the level of the battery voltage to determine whether the battery is good or bad.
  • the ATRAegaS microcontroller provides a 6-channel successive approximation ADC.
  • the four channels of ADC0-ADC3 provide 10-bit conversion accuracy.
  • the ADC4 and ADC5 channels only provide 8-bit conversion accuracy.
  • This circuit uses ADC0 to detect the level of the voltage. During the test, as long as the battery is placed in the detecting recess 22 of the housing 2 and pushed into contact with the pole piece (not shown) in the detecting recess 22, the battery is good or bad.
  • the positive pole is connected to the PC0 port of the single chip U1, and the negative pole of the pole piece is grounded.
  • the test results are displayed by the LCD in graphics and text. There are 4 states: When the battery graphic is a space, the text indicates that the battery is invalid. When the battery graphic has a grid, the text display is underpowered. When the battery graphic has two grids, The text indicates that the battery is low. When the battery level is three grids, the text indicates that the battery is fully charged.
  • Each group of heating elements includes a heating element Rfzn and a triode VTn, and the triode VTn is preferably a ⁇ -type triode, and a plurality of heating elements Rfzn of each group of heating units are connected in parallel, one end of the parallel connection is connected with a +5V DC power source, and the other end is connected with a corresponding triode
  • the emitter of VTn is connected, the base of each transistor VTn is connected to the main control circuit 10, and the collector is connected to the ground.
  • At least two sets of heat generating units are connected in parallel to form a drying circuit 24.
  • the drying circuit 24 preferably includes three sets of independently operating heat generating units, including three sets of heating elements Rfz l, Rfz2, Rfz3, three connected to the three sets of heating elements, respectively.
  • Transistors VT1, VT2, VT3, three sets of heating elements are applied to the PCB board 26, three sets of heating elements are arranged on the PCB board 26, and each set of heating elements is evenly distributed.
  • the three sets of heating elements include, B, C three groups, preferably the A group heating elements include 5 Rfzl, the B group heating elements include 8 Rfz2, (the group heating elements include 12 Rfz3, 5 Rfzl parallel ends and +5V)
  • the DC power supply is connected, the other end is connected to the emitter of the triode VT1, the other end of the 8 Rfz2 is connected to the +5V DC power supply, the other end is connected to the emitter of the triode VT2, and the other end of the 12 Rfz3 is connected to the +5V DC power supply.
  • the other end is connected to the emitter of the transistor VT3, and the bases of the transistors VT1, VT2, and VT3 are respectively connected to the P3. 4 port, the P3.
  • the drying circuit 24 is provided with three heating zones, which are commanded by the single-chip microcomputer to realize the sub-period, sub-section alternate, crossover, superimposed heating, so as to keep the temperature of the electronic dryer constant.
  • the MCU issues an instruction, P3. 4 port, P3 5 port, P3. 7 port low level makes the triode VT1, VT2, VT3 conduction, Rfz l, Rfz2, Rfz3 electric heating; P3. 4 port, P3. 5 port, P3.
  • Transistors VT1, VT2, and VT3 are cut off, Rfz l , Rfz2 , and Rfz3 are de-energized and stop generating heat.
  • Rfzl, fz2, and Rfz3 all use patch-type PTC linear thermistors, since the chip-type linear thermistor is made of PTC material. It has a positive temperature coefficient. When the thermistor is heated by the current, the temperature rises, the resistance increases correspondingly, the current passing through is correspondingly reduced, and the heat generation is correspondingly reduced. The temperature is correspondingly decreased and is in a constant temperature state, with automatic regulation. Temperature performance.
  • the heating element uses 25 patch PTC linear thermistors, dense array layout, applied on On the PCB. There are many hot spots, dense and thin, and there are no dead ends in the distribution. It has the characteristics of uniform heating and fast heating.
  • the PTC material has a positive temperature coefficient, the chip thermistor is energized and heated, the temperature rises, and the resistance increases accordingly, so the current passing through is correspondingly reduced, the heat generation is also reduced, and the temperature is correspondingly decreased and is in a constant temperature state, having an automatic Regulate temperature performance.
  • the sub-area divides the arrangement position of the heating elements into a plurality of areas; the time division divides the entire heating and drying process into several time periods.
  • Fig. 2 is a schematic view showing the division of the three regions of the present embodiment: there are five heating elements Rfz l in the A region, eight heating elements Rfz2 in the B region, and twelve heating elements Rfz3 in the C region.
  • the above arrangement is based on the principle that the heating elements are evenly distributed and the heat is uniform.
  • the heating element in Zone A is at least because the A zone works during the first period of insulation and the residual heat is the largest.
  • a light-transmissive partition 28 may be disposed in the casing 2, and the transparent partition 28 may be made of quartz glass, calcium fluoride or the like, and the transparent partition is provided with The venting holes 29 are disposed on one side of the light transmissive partition 28, and the other side of the light transmissive partition 28 is provided with at least one ultraviolet light pipe 30.
  • the ultraviolet light tube 30 emits ultraviolet light having a wavelength of 200 to 280 nm.
  • Ultraviolet light with a wavelength of 200-280nm can disinfect the hearing aid.
  • the ultraviolet light with a center wavelength of 254nm is easily absorbed by the organism, and it acts on the DNA and RNA of the organism, causing it to be destroyed and causing the death of bacteria and viruses.
  • High-intensity ultraviolet light can be sterilized in a short period of time, and it can be killed in only one second for the bacterial propagule.
  • Ultraviolet light close-range high-intensity irradiation can kill the bacterial spores on the surface of the object. 99.9% or more And it has extremely strong sterilization effect on any bacteria and viruses.
  • the ultraviolet light can be directly radiated and reflected to the hearing aid, thereby improving the irradiation intensity and the irradiation range of the ultraviolet light, and the sterilization effect is good.
  • the specularly reflective layer 32 can be a lens, a metal mirror patch, a reflective film or a plated layer, the lens can be a glass mirror; and the metal mirror patch can be a stainless steel plate.
  • the ultraviolet light tube 30 is disposed under the light transmissive partition 28, and the ultraviolet light emitted by the ultraviolet light tube 30 can pass through the light transmissive partition 28 to sterilize the bottom of the hearing aid, and the ultraviolet light passing through can be mirrored.
  • the reflective layer 32 radiates to the hearing aid, so that the hearing aid is exposed to ultraviolet light at 360°, and has a strong and thorough sterilization effect.
  • the safety switch 34 is designed to protect the eyes and skin from UV light and to protect the user's safety.
  • the safety switch 34 is a Hall switch, and a magnet 36 can be disposed on the inner wall of the cover 4, and the magnet 36 is adjacent to the safety switch 34 when the cover 4 is closed.
  • the safety switch 34 cuts off the ultraviolet tube 30. The power supply, the ultraviolet tube 30 is extinguished, thereby fully protecting the safety of the user and avoiding burning of the eyes and skin.
  • the safety switch 34 is not limited to the Hall switch, and may be a pressure switch.
  • the pressure switch may be disposed in the housing 2, and the pressure switch may be contacted when the cover 4 is closed. When the cover 4 is opened, the pressure disappears and there is a pressure change. , the conduction or cutting of the ultraviolet light tube 30 is realized.
  • the ultraviolet tube 30, the electronic ballast AP1, the triode VT form a disinfection circuit 38, controlled by the PC3 port of the single chip U1.
  • the electronic ballast API illuminates the ultraviolet tube 30, and emits ultraviolet light for direct sterilization.
  • the safety switch 34 outputs a signal to the PD3 port of the single chip U1 through the inverter IC to turn on or off the power supply of the ultraviolet light pipe 30.
  • the single-chip microcomputer PB1, PB2, PB3 output low level, drive all the heating zones of the drying circuit 24 to heat up at the same time, until the temperature data collected by the DS18B20 has reached the preset upper temperature threshold, the LCD displays the instantaneous temperature, and the single-chip microcomputer U1 issues an instruction.
  • PB2, PB3 port output high level off heating main circuit B heating zone and C heating zone. The whole machine enters the first holding period, and only the A heating zone performs compensation heating to keep the temperature constant.
  • the single-chip PB1 port outputs a high level to turn off the A heating zone, and the PB3 port outputs a low level to open the C heating zone for heating and insulation.
  • the PB3 port of the single-chip microcomputer outputs a high-level shutdown C heating zone, and the PB1 and PB2 ports output a low-level open A heating zone and a B heating zone to supplement heating until the end of the timing 4h.
  • the secondary sterilization and disinfection are set in the whole process of heating, and the operation is automatically started when entering the first holding period and the second holding period respectively, and the ultraviolet tube 30 emits ultraviolet light having a wavelength of 200-280 nm, and the generated ultraviolet light can be mirror-finished.
  • the reflective layer 32 is directly radiated and reflected to the hearing aid, and has a large irradiation intensity and a wide irradiation range, and is completely sterilized and disinfected, and is automatically extinguished every ten minutes.
  • the safety switch 34 transmits a signal to the single chip U1, and the single chip U1 is switched to the emergency interrupt program to cut off the power of the ultraviolet light pipe 30, and the ultraviolet light tube 30 is extinguished, thereby fully protecting the safety of the user.
  • the original heat preservation program will be automatically interrupted and the supplementary heating program will be preferentially entered.
  • the priority supplementary heating program will be automatically exited to resume the insulation process.
  • the insulation program is interrupted and the emergency program for cutting off the heating element is preferentially entered.
  • the emergency program is automatically exited to resume the insulation process.
  • the heat generating component is divided into two regions, an A region and a B region.
  • Embodiment 5 As shown in Fig. 17, the heat generating component is divided into three regions, an A region, a B region, and a C region.
  • Sub-regional, time-divisional alternation, crossover, and superheating are a new type of intelligent heating for electronic dryers for hearing aids.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

La présente invention concerne un appareil de séchage électronique pour une aide auditive. L'appareil de séchage électronique comprend un boîtier, un appareil de séchage et un couvercle de boîtier raccordé au boîtier de façon à permettre l'ouverture et la fermeture de ce dernier. Le couvercle de boîtier et le boîtier forment une cavité permettant de recevoir l'aide auditive. Le corps de l'appareil de séchage comprend au moins deux ensembles d'unités chauffantes qui fonctionnent indépendamment. Chacune des unités chauffantes comprend un élément chauffant, un circuit d'alimentation électrique et un circuit de commande principal, tous reliés électriquement. Selon la présente invention, de multiples thermistances CTP montées en surface sont utilisées et disposées intensivement à la manière d'une matrice, les points chauffants sont nombreux, denses et proches, et il n'existe pas de coins morts. L'appareil de séchage électronique possède les caractéristiques de produire un chauffage uniforme, une montée en température rapide et un bon effet de préservation de la chaleur, et l'effet de séchage sur l'aide auditive est bon. Un chauffage intelligent sectorisé, à alternance spatio-temporelle, croisé et superposé est réalisé en utilisant une technologie de commande par microordinateur monopuce. Les éléments chauffants sont alimentés et effectuent le chauffage constamment dans l'ensemble du processus, la chaleur dissipée est délivrée constamment afin d'obtenir un équilibrage dynamique de la chaleur et, par conséquent, le processus à température constante est stable, les fluctuations de température sont faibles et la précision de régulation de la température est élevée, ce qui permet d'obtenir une température réellement constante.
PCT/CN2013/089477 2013-12-16 2013-12-16 Appareil de séchage électronique pour aide auditive WO2015089692A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2735266Y (zh) * 2004-09-11 2005-10-19 李建华 助听器的干燥器
CN201193919Y (zh) * 2008-04-23 2009-02-11 苏州市百助听力科技有限公司 助听器干燥器
CN201340166Y (zh) * 2009-01-20 2009-11-04 四川微迪数字技术有限公司 助听器专用电子恒温干燥箱
US20100088922A1 (en) * 2008-10-10 2010-04-15 Hearing Technologies International, Inc. Hearing aid dryer
CN202853270U (zh) * 2012-06-26 2013-04-03 无锡耐克赛尔电池有限公司 一种助听器干燥盒

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2735266Y (zh) * 2004-09-11 2005-10-19 李建华 助听器的干燥器
CN201193919Y (zh) * 2008-04-23 2009-02-11 苏州市百助听力科技有限公司 助听器干燥器
US20100088922A1 (en) * 2008-10-10 2010-04-15 Hearing Technologies International, Inc. Hearing aid dryer
CN201340166Y (zh) * 2009-01-20 2009-11-04 四川微迪数字技术有限公司 助听器专用电子恒温干燥箱
CN202853270U (zh) * 2012-06-26 2013-04-03 无锡耐克赛尔电池有限公司 一种助听器干燥盒

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