CN106996586B - Fresh air linkage controller and range hood using same - Google Patents

Fresh air linkage controller and range hood using same Download PDF

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Publication number
CN106996586B
CN106996586B CN201710352128.8A CN201710352128A CN106996586B CN 106996586 B CN106996586 B CN 106996586B CN 201710352128 A CN201710352128 A CN 201710352128A CN 106996586 B CN106996586 B CN 106996586B
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China
Prior art keywords
circuit
fresh air
range hood
control circuit
current
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CN201710352128.8A
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CN106996586A (en
Inventor
邹国营
郑高辉
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Zhejiang Shuaikang Electric Stock Co Ltd
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Zhejiang Shuaikang Electric Stock Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2021Arrangement or mounting of control or safety systems
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)

Abstract

The invention relates to a fresh air linkage controller and a range hood using the same, when the range hood is started, a current sensing circuit automatically senses working current of the range hood and outputs an electric signal to start a driving control circuit, and the driving control circuit is started to automatically start a fresh air electric valve to enable the fresh air electric valve to rotate forward to open the fresh air valve.

Description

Fresh air linkage controller and range hood using same
Technical Field
The invention relates to a fresh air linkage controller and a range hood using the same.
Background
Along with the continuous improvement of the living standard of people, the pursuit of the living quality is also higher and higher, and especially the health awareness is stronger and stronger. The exhaust gas generated by the combustion of the kitchen and the oil smoke generated by the cooking are mostly sucked and discharged out of the room through the range hood, but the exhaust gas and the oil smoke are difficult to be discharged, and the escaped exhaust gas and the oil smoke can fly in the room space. Under the condition that enough fresh air is not filled and only air is leaked through doors and windows, the escape of oil smoke is more serious, and the air pollution in a kitchen is also more serious, so that the physical health of people is affected.
Disclosure of Invention
The invention aims to improve the air quality of a kitchen and improve the drifting condition of waste gas and oil smoke.
The invention is realized by the following technical scheme:
the utility model provides a new trend coordinated control ware, including the current induction circuit that is used for responding to range hood working current and the drive control circuit that is used for driving new trend motorised valve to open/close, current induction circuit and drive control circuit electricity are connected, and when range hood was opened, current induction circuit auto-induction range hood working current to output the signal of telecommunication and start drive control circuit, drive control circuit is automatic to open new trend motorised valve.
The current induction circuit is provided with a current transformer HL1 to indirectly induce the working current of the range hood, and the current transformer HL1 is sleeved on a power supply line of the range hood.
The circuit also comprises a signal isolation circuit, wherein the signal isolation circuit is connected in series between the current sensing circuit and the drive control circuit, the signal isolation circuit is provided with an optical coupler U1, a light emitting diode of the optical coupler U1 is connected in parallel to the output end of the current sensing circuit, and an emitter electrode of a triode in the optical coupler U1 is connected with the drive control circuit.
The driving control circuit comprises a relay RL1 and a triode Q1, wherein a coil negative pin of the relay RL1 is connected with a collector electrode of the triode Q1, an emitter electrode of the triode Q1 is grounded, and a base electrode of the triode Q1 is connected with an emitter electrode of a triode in the optocoupler U1.
The driving control circuit further comprises a capacitor C3, the base electrode of the triode Q1 is connected with the positive electrode of the capacitor C3, and the negative electrode of the capacitor C3 is grounded.
The driving control circuit further comprises a diode D1, wherein the positive electrode of the diode D1 is connected with the negative pin of the coil of the relay RL1, and the negative electrode of the diode D1 is connected with the positive pin of the coil of the relay RL1.
The power supply circuit further comprises a voltage reducing circuit, a rectifying and filtering circuit and a voltage stabilizing circuit, wherein the voltage reducing circuit, the rectifying and filtering circuit and the voltage stabilizing circuit are sequentially and electrically connected to form a power supply branch, the input end of the power supply branch is connected to a power grid for taking power, and the output end of the power supply branch is connected to a drive control circuit for supplying power to the drive control circuit.
The utility model also provides a range hood, including the power supply line that produces working current, still include foretell new trend linkage controller, in the new trend linkage controller current induction circuit induction power supply line in working current.
The implementation of the invention comprises the following technical effects:
when the range hood is started, the current sensing circuit automatically senses working current of the range hood and outputs an electric signal to start the driving control circuit, and the driving control circuit is started to automatically start the fresh air electric valve, so that the fresh air electric valve rotates forward to open the fresh air valve.
Drawings
Fig. 1 is a system block diagram of a fresh air linkage controller of the present invention connected to a range hood and a fresh air electric valve 3, respectively.
Fig. 2 is a circuit diagram of the fresh air linkage controller of the present invention, which is respectively connected to the range hood and the fresh air electric valve 3.
Detailed Description
The invention will now be described in detail with reference to the following examples and the accompanying drawings, it being pointed out that the examples described are intended only to facilitate an understanding of the invention and are not intended to be limiting in any way.
Example 1
Referring to fig. 1, the range hood 0 is composed of a body 1 and a fresh air linkage controller 2, wherein the body 1 comprises a casing, a fan system and a power supply line, a smoke inlet and a smoke outlet are arranged on the casing, the fan system comprises a fan component and an illumination control device, and the power supply line, the casing, the fan component and the illumination control device are mature technologies in the prior art, so that the details are not repeated. When the range hood 0 is started, the fresh air linkage controller 2 senses the working current of the power supply line, so that the fresh air electric valve 3 of the kitchen fresh air system is automatically started. It should be noted that the fresh air linkage controller 2 may be disposed outside the range hood 0 or may be disposed inside the range hood 0.
Referring to fig. 2, the fresh air linkage controller 2 specifically includes a current sensing circuit 21, a signal isolation circuit 22, a drive control circuit 23, a voltage reduction circuit 24, a rectifying and filtering circuit 25, and a voltage stabilizing circuit 26. The current sensing circuit 21 indirectly senses the operating current of the range hood 0 through a current transformer HL1 sleeved on a power supply line of the range hood 0. When the range hood 0 is turned on and operates, the power supply line of the range hood 0 is powered on, at this time, the current transformer HL1 generates an ac induction voltage under the action of magnetic induction, the ac induction voltage is rectified by the rectifier bridge BD2 and then filtered by the capacitor C4 and the capacitor C5, and the filtered voltage is used to drive the light emitting diode of the optocoupler U1 of the signal isolation circuit 22 to emit light, so as to control the conduction of the triode of the optocoupler U1. After the conducting signal of the triode of the optical coupler U1 is debounced through the capacitor C3 of the driving control circuit 23, the conducting signal is amplified by the triode Q1, so that enough power is obtained to drive the normally-closed relay RL1 to be connected, and then the fresh air electric valve 3 of the fresh air system is controlled to rotate forward, so that the fresh air valve is opened, the effect of intelligent automatic synchronous working of the fresh air valve and the range hood 0 is achieved, at the moment, under the negative pressure pumping of the range hood 0, the fresh air can enter the room through the fresh air valve outdoors, so that the fresh air of a kitchen is timely supplemented, further, the suction and the discharge of the range hood 0 are more labor-saving, the air inlet of the range hood 0 is increased, the oil smoke drifting is reduced, and the aim of improving the air quality of a kitchen is achieved. Wherein the capacitor C5 in the current sensing circuit 21 is used for removing the high frequency interference pulse.
The core of the signal isolation circuit 22 is an optocoupler U1, the positive electrode of the light emitting diode in the optocoupler U1 is connected with the input end of the current sensing circuit 21 through a resistor R7, the negative electrode of the light emitting diode in the optocoupler U1 is grounded, and the emitter of the triode in the optocoupler U1 is connected with the driving control circuit, which mainly considers that the current transformer HL1 can generate meaningless interference alternating current due to more low-voltage clutter on the power supply line of the range hood 0, and at the moment, the input end of the optocoupler is a light emitting diode, which is conducted with a threshold voltage value, the influence of the interference alternating current can be skillfully filtered by utilizing the threshold voltage value, the optocoupler can output signals only when the current of the power supply line reaches a certain value, and the error generated by the interference alternating current can be solved without redundant devices. Additionally, the optocoupler U1 is used to isolate the current sensing circuit 21 from the driving control circuit 23, and the input/output signal is transmitted through the optical coupling, which is electrically completely isolated, so as to effectively avoid the interference and unsafe factors caused by the driving control circuit 23 to the current sensing circuit 21.
The drive control circuit 23 includes a capacitor C3, a resistor R6, a transistor Q1, a diode D1, and a relay RL1. The coil negative pin of the relay RL1 is connected with the collector of the triode Q1, the emitter of the triode Q1 is grounded, the base of the triode Q1 is connected with the emitter of the triode in the optocoupler, the base of the triode Q1 is connected with the anode of the capacitor C3 through the resistor R6, and the cathode of the capacitor C3 is grounded. The capacitor C3 is a debounce capacitor, which utilizes the principle that the voltages at two ends of the capacitor cannot be suddenly changed to effectively overcome the impact current caused by the on/off of the lighting lamp of the range hood 0, and can also improve the surge current caused by the on/off of the range hood 0, namely, the debounce function is achieved. The relay RL1 is selected to play a role in electrically isolating the control loop from the fresh air electric valve 3, so that mutual interference is avoided. In addition, the positive pole of the diode D1 is connected with the negative pin of the coil of the relay RL1, the negative pole of the diode D1 is connected with the positive pin of the coil of the relay RL1, and the diode D1 provides a discharge loop for counter potential generated when the coil of the relay RL1 is disconnected so as to avoid damaging the triode Q1.
The voltage reducing circuit 24 is composed of a fuse F1, a resistor R2 and a capacitor C1, commercial power is reduced by the voltage reducing circuit 24 and then becomes alternating low voltage, the alternating low voltage is rectified by a rectifier bridge DB1 of a rectifier filter circuit 25 and is changed into direct voltage after being filtered by a circuit C2, and the direct voltage is stabilized by a voltage stabilizing circuit 26 composed of a resistor R3 and a voltage stabilizing diode Z1 and then is supplied to the driving control circuit 23, so that an external power supply is not needed, and the purposes of small size and low cost of the fresh air linkage controller 2 are achieved. The fuse F1 plays a role in short-circuit protection.
The current transformer HL1 is selected to indirectly sense the working current of the range hood 0, and if the range hood 0 needs to automatically open a fresh air valve, only one fresh air linkage controller 2 is needed to be additionally arranged, so that the internal circuit of the range hood 0 is not needed to be modified, and the old range hood can be upgraded very simply.
The relay RL1 may be normally closed or normally open.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.

Claims (6)

1. Fresh air linkage controller, characterized by: the automatic fresh air valve comprises a current induction circuit for inducing working current of the range hood and a driving control circuit for driving an external fresh air electric valve to be opened/closed, wherein the current induction circuit is electrically connected with the driving control circuit, and when the range hood is opened, the current induction circuit automatically induces the working current of the range hood and outputs an electric signal to start the driving control circuit, and the driving control circuit automatically opens the fresh air electric valve;
the circuit also comprises a signal isolation circuit, wherein the signal isolation circuit is connected in series between the current sensing circuit and the drive control circuit, the signal isolation circuit is provided with an optical coupler U1, a light emitting diode of the optical coupler U1 is connected in parallel to the output end of the current sensing circuit, and an emitter electrode of a triode in the optical coupler U1 is connected with the drive control circuit;
the drive control circuit further comprises a capacitor C3, the base electrode of the triode Q1 is connected with the positive electrode of the capacitor C3, and the negative electrode of the capacitor C3 is grounded.
2. The fresh air linkage controller according to claim 1, characterized in that: the current induction circuit is provided with a current transformer HL1 to indirectly induce the working current of the range hood, and the current transformer HL1 is sleeved on a power supply line of the range hood.
3. The fresh air linkage controller according to claim 2, characterized in that: the driving control circuit comprises a relay RL1 and a triode Q1, wherein a coil negative pin of the relay RL1 is connected with a collector electrode of the triode Q1, an emitter electrode of the triode Q1 is grounded, and a base electrode of the triode Q1 is connected with an emitter electrode of a triode in the optocoupler U1.
4. A fresh air linkage controller according to claim 3, wherein: the drive control circuit further comprises a diode D1, wherein the positive electrode of the diode D1 is connected with the negative pin of the coil of the relay RL1, and the negative electrode of the diode D1 is connected with the positive pin of the coil of the relay RL1.
5. The fresh air linkage controller according to claim 2, characterized in that: the power supply circuit comprises a power supply circuit, a voltage reducing circuit, a rectifying and filtering circuit and a voltage stabilizing circuit, wherein the voltage reducing circuit, the rectifying and filtering circuit and the voltage stabilizing circuit are sequentially and electrically connected to form a power supply branch, the input end of the power supply branch is connected to a power grid for taking power, and the output end of the power supply branch is connected to a drive control circuit for supplying power to the drive control circuit.
6. The range hood comprises a power supply circuit for generating working current and is characterized by further comprising a fresh air linkage controller according to any one of claims 1-5, wherein the current sensing circuit in the fresh air linkage controller senses the working current in the power supply circuit.
CN201710352128.8A 2017-05-18 2017-05-18 Fresh air linkage controller and range hood using same Active CN106996586B (en)

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Publication number Priority date Publication date Assignee Title
CN108194955A (en) * 2018-01-22 2018-06-22 北京绿烽盛烨节能技术开发有限公司 A kind of range hood mends wind linkage
CN110553297B (en) * 2019-09-30 2021-03-19 佛山市顺德区美的洗涤电器制造有限公司 Control method of range hood and range hood

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