WO2014104457A1 - Appareil de surveillance d'état destiné à un humidificateur par ultrasons - Google Patents

Appareil de surveillance d'état destiné à un humidificateur par ultrasons Download PDF

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Publication number
WO2014104457A1
WO2014104457A1 PCT/KR2013/000027 KR2013000027W WO2014104457A1 WO 2014104457 A1 WO2014104457 A1 WO 2014104457A1 KR 2013000027 W KR2013000027 W KR 2013000027W WO 2014104457 A1 WO2014104457 A1 WO 2014104457A1
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WO
WIPO (PCT)
Prior art keywords
load resistance
current
voltage
amplitude
ultrasonic
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Application number
PCT/KR2013/000027
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English (en)
Korean (ko)
Inventor
박대규
Original Assignee
주식회사 스마트로닉스
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Application filed by 주식회사 스마트로닉스 filed Critical 주식회사 스마트로닉스
Publication of WO2014104457A1 publication Critical patent/WO2014104457A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0008—Control or safety arrangements for air-humidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays

Definitions

  • the present invention relates to a state monitoring device for an ultrasonic humidifier, and more particularly, to a state monitoring device for sensing the level of a humidification tank and whether a humidifier is coupled by monitoring a voltage or a current supplied to an ultrasonic vibrator used for generation of a spray. It is about.
  • the present inventors patented the “Easy Ultrasonic Humidifier” in 2006, focusing on the fact that the simple washing function, which is effective in principle, will be more effective in terms of hygiene management than the sterilizing function whose effects are not clearly proven.
  • the application has been registered (10-2006-0111376).
  • the float level sensor complicates the internal structure of the humidifier, it is inconvenient to wipe out every corner of the humidifier by hand. In order to make the cleaning simpler, the internal structure of the humidifier should be simpler, and thus the float level sensor should be removed.
  • the ultrasonic vibrator is the only means for detecting the water level and receiving the electrical signal between the humidifier and the main body. Therefore, a level sensing means using the ultrasonic vibrator is required.
  • the prior art for achieving the above object is the application number 10-1996-0016495 "humidifier control system"
  • the core of the technical idea is “converts the load current component detected by the CT to a voltage component, and this Compared with the reference voltage upper limit value and the lower limit value, it is judged as 'no water' if the reference voltage upper limit value is above, and if it is below the reference voltage lower limit value, it is judged as 'vibrator damage'. That is, if the load current value is above the predetermined upper limit value, it is determined as 'no water', and if it is below the predetermined lower limit value, it is determined as 'vibrator damage'.
  • An object of the present invention to solve the above problems is to provide a state monitor of the ultrasonic humidifier using an ultrasonic vibrator. It is also to provide a completed invention with industrial applicability.
  • the state monitor value of the present invention for solving the above problems is proportional to the setting value of the ultrasonic vibrator for atomizing the water contained in the humidification tank by the ultrasonic vibration, the spray amount setting unit for setting the generation amount of the spray, and the spray amount setting unit.
  • An ultrasonic humidifier comprising an oscillation driver for driving the ultrasonic oscillator with an AC drive signal having a magnitude (amplitude) and a frequency corresponding to a resonance frequency of the ultrasonic oscillator, the voltage amplitude sensing for sensing an amplitude of an output voltage of the oscillation driver.
  • the load resistance value is directly compared with the load resistance range or the load It has a feature that includes a state judgment unit for determining the humidification tank level and the state of the vibrator by indirect comparison using a comparison formula expressed in terms of voltage or current by applying Ohm's law to the resistance and load resistance range.
  • 1 to 8 are views of the first to eighth embodiments of the state monitoring device of the present invention.
  • amplifier 100 status monitoring device
  • L and C are intrinsic values determined by the mechanical structure of the ultrasonic vibrator
  • Cs is a stray capacitance formed by electrodes and conductors formed in the ultrasonic vibrator
  • L, C, and Cs values are the same.
  • Ultrasonic oscillators typically have a series resonant frequency And the reactance component cancels out, so that only the resistive component R remains. In other words, at the resonant frequency, the ultrasonic vibrator appears to be pure resistance R.
  • the load resistance R is an electrical representation of the mechanical load when supplying energy to the external environment by the mechanical vibration of the vibrator, the resistance value decreases when the mechanical load of the external environment is small, and the resistance value increases when the mechanical load is large. .
  • the R value is almost zero since only a small value of resistivity remains. Therefore, a very large electric current flows through the ultrasonic vibrator and the vibrator is broken.
  • the electrical equivalent circuit is an open circuit. Therefore, the impedance of the ultrasonic vibrator in normal operation falls within a predetermined range of the resistance value R. That is, the condition of R LO ⁇ R ⁇ R HI is satisfied.
  • R LO is a first threshold for determining a mechanical no-load / low load state
  • R HI is a second threshold for determining when no ultrasonic vibrator is present or broken.
  • the resistance value R is constant when the level of the humidifier is constant, but becomes smaller than R LO when the water level becomes low due to lack of water, and when the vibrator is broken or absent, it is lower than R HI . Gets bigger Therefore, the state of the ultrasonic humidifier can be monitored by monitoring the change in the resistance value.
  • the power supplied by the oscillation driver driving the ultrasonic vibrator is P
  • the power (energy per unit time) supplied by the ultrasonic vibrator to the water of the humidifier is Pw
  • FIG. 1 shows a first embodiment of the state monitoring device of the present invention.
  • the ultrasonic humidifier driving circuit of the prior art is an ultrasonic vibrator 10 for atomizing the water contained in the humidification tank by ultrasonic vibration, the spray amount setting unit 31 for setting the generation amount of the spray, and the spray amount setting And an oscillation driver 20 for driving the ultrasonic vibrator with an AC drive signal having a magnitude (amplitude) proportional to a negative set value and a frequency corresponding to a resonance frequency of the ultrasonic vibrator.
  • the oscillation driver 20 uses a class C amplification circuit at the output terminal as an oscillation circuit for positive feedback of the resonant frequency component of the ultrasonic vibrator 10.
  • the spray amount setting unit 31 adjusts the amplitude of the output signal by adjusting the DC bias point of the class C amplifier.
  • any one of open loop control or closed loop control using negative feedback may be used to adjust the amplitude (bias adjustment).
  • the open circuit control was used because the circuit configuration was relatively simple and the manufacturing cost was reduced. Since the negative feedback and the positive feedback control theory is a technique for the main pipe, a detailed description thereof will be omitted.
  • the divider 80 calculates a load resistance value by dividing the load voltage amplitude value detected by the voltage amplitude detection unit 50 by the load current amplitude value detected by the current amplitude detection unit 60.
  • the output signal of the divider 80 is R O / (G V G I ). Since the output signal is an attenuated signal, the output signal must be amplified again to have an original size (81), or the upper and lower limit values of the reference range of the state determination unit 70 must be attenuated at the same ratio.
  • a technique for amplifying or attenuating a signal to a size suitable for signal processing at each stage is a technique used for a general public.
  • the current sensor 61 converts a current signal into a voltage signal and is included in the current amplitude detection unit 60.
  • the current amplitude detection unit 60 is a trans-impedance amplifier.
  • the voltage amplitude detection unit 50 and the current amplitude detection unit 60 may be implemented using a technique for main pipe such as a rectifying smoothing circuit or a peak detector, detailed description thereof will be omitted.
  • the state determination unit 70 is a range comparator composed of two Schmitt triggers (71, 72) and one AND logic circuit 73, as shown in the figure. In order to prevent malfunction due to component errors and noise, it is preferable to make the gap between the upper and lower threshold voltages of the smit trigger sufficiently large.
  • the following table shows the state output of the present condition monitoring apparatus according to the calculated value of the output resistance.
  • the humidifier should only work if the humidifier status shown in the table is normal. If the 'humidifier status' is not 'normal', the humidifier is stopped and the consumer is informed using one or more of the visual and auditory means.
  • Figure 2 shows an embodiment of calculating the load admittance, which is its inverse instead of the load impedance.
  • Y O 1 / R O
  • Y HI 1 / R LO
  • Y LO 1 / R HI .
  • the first and second embodiments described above calculate the output impedance / admittance information from the measured output voltage and output current information, and then directly compare the output impedance / admittance value with a predetermined reference range to determine the state of the humidifier. Watch. Therefore, there is a simple advantage conceptually, but it is not desirable in terms of manufacturing cost in actual implementation because expensive divider 80 circuit is required. Therefore, the following indirect comparison method that does not require a divider will be described.
  • Fig. 3 shows a circuit for monitoring the state of the ultrasonic humidifier by monitoring whether the voltage amplitude signal V O of the load (ultrasound vibrator) falls within a predetermined range.
  • an amplifier 81 is used instead of the divider used in the above embodiments.
  • the product of the signal attenuation ratio (G V ) of the voltage amplitude sensing unit and the signal gain ratio (G I ) of the current amplitude sensing unit is a first threshold value R LO which is a load resistance value at the boundary line that separates the low and normal water levels.
  • the signal attenuation ratio and the signal gain ratio are designed.
  • the output signal V O / G V of the voltage amplitude detection unit is converted to the output signal G I I O of the current amplitude detection unit and its (second threshold) / (first threshold) times signal (R HI / R LO ) G I I Comparing with O achieves a predetermined object.
  • the principle is self-explanatory as shown in the following formula, so detailed description is omitted.
  • the oscillation driver 20 has not placed any restriction in adjusting the amplitude of its output signal. Therefore, the open circuit method of the prior art can be used. Now, embodiments of applying the state monitor value of the present invention in a closed circuit method capable of stably controlling the output signal will be described.
  • FIG. 5 shows that the output of the current amplitude detector in the circuit of FIG. 3 is used as a negative feedback signal of the oscillation driver circuit. Therefore, the oscillation driver drives the load with the constant current value of the size set by the user.
  • FIG. 6 shows that the output of the voltage amplitude sensing unit in the circuit of FIG. 4 is used as a negative feedback signal of the oscillation driver circuit. Therefore, the oscillation driver drives the load with the constant voltage value of the size set by the user.
  • the remainder is the same as in the fourth embodiment, and since the signals of the respective parts are shown in detail in the drawings, no explanation is required.
  • the seventh embodiment shown in FIG. 7 is similar to FIG. 5, and the eighth embodiment shown in FIG. 8 is similar to FIG. 6.
  • the function of varying the threshold value used for determining the condition of the humidifier in proportion to the spray amount setting value is different from that of using the dual variable resistor 30 instead of the amplifier 81.
  • the remaining thresholds may be any of the input signals since the two input signals of the error calculating section 23 are the same in the normal operation state.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Human Computer Interaction (AREA)
  • Air Humidification (AREA)

Abstract

La présente invention concerne un appareil de surveillance d'état destiné à un humidificateur par ultrasons et, plus spécifiquement, un appareil de surveillance d'état susceptible de détecter un niveau d'eau en surveillant une tension et une intensité fournies à un oscillateur à ultrasons, lequel est utilisé pour produire une pulvérisation. L'humidificateur par ultrasons comprend : un oscillateur à ultrasons qui atomise de l'eau contenue dans un récipient d'humidification ; une unité de réglage de quantité de pulvérisation qui définit la quantité de production de la pulvérisation ; et une unité d'entraînement d'oscillateur qui entraîne l'oscillateur à ultrasons en utilisant une amplitude proportionnelle à une valeur de consigne de l'unité de réglage de quantité de pulvérisation et un signal d'entraînement à courant alternatif d'une fréquence correspondant à une fréquence de résonance de l'oscillateur à ultrasons, l'appareil de surveillance d'état de la présente invention comprenant : une unité de détection d'amplitude de tension qui détecte une amplitude d'une tension de sortie de l'unité d'entraînement d'oscillateur ; une unité de détection d'amplitude d'intensité qui détecte une amplitude d'une intensité de sortie de l'unité d'entraînement d'oscillateur ; et une unité de détermination d'état qui compare si une valeur de résistance de charge calculée à partir d'un signal de sortie de l'unité de détection d'amplitude de tension et de l'unité de détection d'amplitude d'intensité se trouve dans les limites d'une plage de résistance de charge lorsqu'on se trouve dans un fonctionnement normal, et détermine un niveau d'eau du récipient d'humidification et un état de l'oscillateur en comparant directement la valeur de résistance de charge et la plage de résistance de charge ou en comparant indirectement la valeur de résistance de charge et la plage de résistance de charge au moyen d'une équation de comparaison qui applique la loi d'Ohm à la valeur de résistance de charge et à la plage de résistance de charge et s'exprimée après une conversion en une tension ou une intensité.
PCT/KR2013/000027 2012-12-31 2013-01-04 Appareil de surveillance d'état destiné à un humidificateur par ultrasons WO2014104457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120157769A KR101244753B1 (ko) 2012-12-31 2012-12-31 초음파가습기의 상태감시장치
KR10-2012-0157769 2012-12-31

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107576868A (zh) * 2017-08-28 2018-01-12 珠海格力电器股份有限公司 振动子工作状态检测方法、装置、电路及加湿器
CN109620990A (zh) * 2018-12-26 2019-04-16 深圳飞安瑞科技股份有限公司 一种恒定喷雾量的超声波香薰装置
CN115106240A (zh) * 2021-03-22 2022-09-27 船井电机株式会社 雾化装置、雾化装置组件及雾化装置的控制***

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6322539U (fr) * 1986-07-28 1988-02-15
EP0281248A2 (fr) * 1987-02-24 1988-09-07 Yukyan Kabushiki Kaisha Système de commande d'humidification
WO2000040326A1 (fr) * 1999-01-08 2000-07-13 Kaz, Incorporated Humidificateur
JP2010054107A (ja) * 2008-08-27 2010-03-11 Mitsubishi Electric Corp 超音波加湿装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940007181B1 (ko) * 1991-07-02 1994-08-08 주식회사 금성사 초음파 가습기의 가습 자동조절방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6322539U (fr) * 1986-07-28 1988-02-15
EP0281248A2 (fr) * 1987-02-24 1988-09-07 Yukyan Kabushiki Kaisha Système de commande d'humidification
WO2000040326A1 (fr) * 1999-01-08 2000-07-13 Kaz, Incorporated Humidificateur
JP2010054107A (ja) * 2008-08-27 2010-03-11 Mitsubishi Electric Corp 超音波加湿装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107576868A (zh) * 2017-08-28 2018-01-12 珠海格力电器股份有限公司 振动子工作状态检测方法、装置、电路及加湿器
CN109620990A (zh) * 2018-12-26 2019-04-16 深圳飞安瑞科技股份有限公司 一种恒定喷雾量的超声波香薰装置
CN109620990B (zh) * 2018-12-26 2024-05-17 深圳飞安瑞科技股份有限公司 一种恒定喷雾量的超声波香薰装置
CN115106240A (zh) * 2021-03-22 2022-09-27 船井电机株式会社 雾化装置、雾化装置组件及雾化装置的控制***

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