CN112051500A - Intelligent heating automatic detection circuit, garment steamer and water pump adjusting method - Google Patents
Intelligent heating automatic detection circuit, garment steamer and water pump adjusting method Download PDFInfo
- Publication number
- CN112051500A CN112051500A CN202010978466.4A CN202010978466A CN112051500A CN 112051500 A CN112051500 A CN 112051500A CN 202010978466 A CN202010978466 A CN 202010978466A CN 112051500 A CN112051500 A CN 112051500A
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- Prior art keywords
- circuit board
- water pump
- heating
- water
- main control
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2825—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere in household appliances or professional audio/video equipment
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F73/00—Apparatus for smoothing or removing creases from garments or other textile articles by formers, cores, stretchers, or internal frames, with the application of heat or steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
Abstract
The invention discloses an intelligent heating automatic detection circuit, a garment steamer and a water pump adjusting method, wherein the circuit comprises a main control circuit board, a heating circuit and a state monitoring circuit board, wherein the heating circuit and the state monitoring circuit board are respectively arranged at one end position far away from the main control circuit board; and the master control circuit board monitors the state of the heating circuit through a superposed electric signal of the magnetic common mode signal generated by the low voltage on the third connecting line and the high voltage on the first connecting line and the second connecting line. Therefore, whether the heating wire is in a working state or not can be obtained, and the water pump is controlled to pump water to the heater of the spray head. On one hand, the overflow phenomenon of the full water of the spray head can be avoided. On the other hand, the use of the connecting wire between the heating wire end of the spray head and the main control circuit board end of the host machine can be reduced.
Description
Technical Field
The invention relates to the technical field of garment steamer, in particular to an intelligent heating automatic detection circuit, a garment steamer and a water pump adjusting method.
Background
The garment steamer is a device which is used in clothing exclusive shops, hotels, families and the like and can smooth and soft clothes. The working principle of the clothes drying machine is that the heating pipe is heated to generate steam, the steam contacts with clothes, and the clothes are leveled and smooth through pulling, pressing and other actions. When the clothes hanger is used, high-pressure steam can be sprayed out only by adding water and electrifying for 1 minute, and the high-pressure steam is sprayed to the wrinkle part of the clothes, so that the clothes are flat and smooth, an ironing board is not needed, and the high-temperature steam has the cleaning and disinfecting effects.
The garment steamer mainly comprises two types, one type is a portable integrated garment steamer, and a main machine and a spray head are integrally designed; in another type, the main machine and the spray head are separated from each other, and the spray head is connected with the main machine through a water outlet pipe and a connecting wire so as to supply power and water to a heater on the spray head. However, this structure may result in that the motherboard controller on the host cannot directly acquire the operating state of the ejection head. Such as an on-off control state of the head and an operation state of the heater. Thus, the heater cannot be pumped for adjustment. When the heating wire of the heater stops working, if water is continuously pumped to the heater of the spray head, the heater can not vaporize water, and the spray head leaks water.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide an intelligent heating automatic detection circuit, a garment steamer and a water pump adjusting method.
In one aspect, to achieve the above object, according to an embodiment of the present invention, an intelligent heating automatic detection circuit includes:
the main control circuit board is connected with the water pump so as to control the water outlet of the water pump;
the two ends of the heating circuit are respectively and electrically connected with the input commercial power alternating current through a first connecting wire and a second connecting wire;
the power supply input end of the state monitoring circuit board is respectively connected with the first connecting wire and the second connecting wire, and the signal output end of the state monitoring circuit board is connected with the main control circuit board through a third connecting wire;
the heating circuit and the state monitoring circuit board are respectively arranged at the position far away from one end of the main control circuit board, the state monitoring circuit board outputs low-voltage direct current, and the first connecting wire, the second connecting wire and the third connecting wire are respectively connected to the ends of the heating circuit and the state monitoring circuit board from the end of the main control circuit board through a cable;
the main control circuit board is used for monitoring the state of the heating circuit through a superposed electric signal of a magnetic common mode signal generated by low voltage on the third connecting line and high voltage on the first connecting line and the second connecting line.
Further, according to an embodiment of the present invention, the heating circuit includes at least one heating wire and at least one constant temperature inductor, and each heating wire is connected to one end of the input mains ac through one constant temperature inductor.
Further, according to an embodiment of the present invention, the state monitoring circuit board includes a voltage dropping circuit, a positive power input end of the voltage dropping circuit is connected to the first connection line, a ground end of the voltage dropping circuit is connected to the second connection line, and an output end of the voltage dropping circuit is connected to the main control circuit board through the third connection line.
Further, according to an embodiment of the present invention, the step-down circuit includes:
a resistor R13, one end of the resistor R13 being connected to the first connection line;
the other end of the resistor R13 is connected with an anode of the diode D4;
a zener diode ZD2, a cathode of the diode D4 being connected to a cathode of the zener diode ZD2, and an anode of the zener diode ZD2 being connected to a reference ground;
a capacitor C3, one end of the capacitor C3 is connected with the cathode of the zener diode ZD2, and the other end of the capacitor C3 is connected with the reference ground;
a diode D5, an anode of the diode D5 being connected to a cathode of the zener diode ZD 2;
the cathode of the diode D5 is connected with one end of the resistor R14, and the other end of the resistor R14 is connected with the main control circuit board through the third connecting line.
Further, according to an embodiment of the present invention, the main control circuit board includes:
a controller;
the water pump driving circuit is respectively connected with the controller and the water pump so as to drive and control the water pump;
the water pump driving circuit includes: silicon controlled rectifier Q1, the one end of water pump is connected with the one end of inputing commercial power alternating current, silicon controlled rectifier Q1 the positive pole with the water pump the other end is connected, silicon controlled rectifier Q1 the negative pole with the other end of inputing commercial power alternating current is connected, silicon controlled rectifier Q1 control pole pass through resistance R6 with a control end of controller is connected.
In another aspect, an embodiment of the present invention further provides a garment steamer, including:
the intelligent heating automatic detection circuit;
the main control circuit board and the water pump are respectively arranged in the main machine;
the shower nozzle, the shower nozzle pass through cable and water pipe with the host computer is connected, first connecting wire, second connecting wire and third connecting wire set up respectively in the cable, heater strip and state monitoring circuit board are installed respectively and are set up in the shower nozzle.
In another aspect, an embodiment of the present invention further provides a method for adjusting a water pump of a garment steamer, including:
judging whether the heating wire is in a working state, and if the heating wire is in a normal working state, controlling the water pump to pump water normally;
otherwise, judging whether the heating wire is converted from a normal working state to an inoperative state, and if so, controlling the water pump to pump water intermittently;
otherwise, judging whether the heating wire is converted from the non-working state to the normal working state, and if so, controlling the water pump to pump water intermittently;
otherwise, judging whether the heating wire is in a non-working state, and if so, controlling the water pump to stop.
Further, according to an embodiment of the present invention, the determining whether the heating wire is in the working state includes:
sampling the voltage signal;
and judging whether the sampling voltage is in periodic variation or not, if so, judging that the heating wire is in a normal working state, and otherwise, judging that the heating wire is in a non-working state.
Further, according to an embodiment of the present invention, the sampling the voltage signal specifically includes: and in a power frequency period, the voltage signal is sampled for multiple times.
The intelligent heating automatic detection circuit provided by the embodiment of the invention is respectively arranged at the position far away from one end of the main control circuit board through the heating circuit and the state monitoring circuit board, the state monitoring circuit board outputs low-voltage direct current, and the first connecting wire, the second connecting wire and the third connecting wire are respectively connected to the ends of the heating circuit and the state monitoring circuit board from the end of the main control circuit board through a cable; the master control circuit board is used for monitoring the state of the heating circuit through a superposed electric signal of a magnetic common mode signal generated by the low voltage on the third connecting line and the high voltage on the first connecting line and the second connecting line. Therefore, the main control circuit board can acquire whether the heating wire is in the working state or not by detecting the low-voltage electric change state of the third connection so as to control the water pump to pump water to the heater of the spray head. On one hand, the phenomenon that the pumped water cannot be heated, evaporated and output due to the stop work of the heating wire and the overflow phenomenon occurs when the water in the heater on the spray head of the garment steamer is full can be avoided. On the other hand, the use of the connecting wire between the heating wire end of the spray head and the main control circuit board end of the host machine can be reduced.
Drawings
Fig. 1 is a block diagram of an intelligent heating automatic detection circuit according to an embodiment of the present invention;
fig. 2 is a block diagram of another intelligent heating automatic detection circuit according to an embodiment of the present invention;
fig. 3 is a structural diagram of an intelligent heating automatic detection circuit according to an embodiment of the present invention;
FIG. 4 is a flow chart of a water pump adjustment method according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for determining whether a heating wire is in a working state according to an embodiment of the present invention;
FIG. 6 is a schematic view of a garment steamer according to an embodiment of the present invention.
Reference numerals:
a host 10;
a main control circuit board 101;
a controller 1011;
a water pump drive circuit 1012;
an indication circuit 1013;
an AC-DC circuit 1014;
a water pump 102;
a spray head 20;
a heating circuit 201;
a fuse 2011;
a heating wire 2012;
a constant temperature sensor 2013;
a condition monitoring circuit board 202;
a voltage-reducing circuit 2021;
a switch control circuit 2022;
a three-terminal control switch 20221;
an electrical cable 30;
a first connection line 301;
a second connection line 302;
a third connecting line 303;
a spray head holder 40.
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In one aspect, referring to fig. 1, fig. 2 and fig. 6, an embodiment of the present invention provides an intelligent heating automatic detection circuit, including: the water pump comprises a main control circuit board 101, a heating circuit 201 and a state monitoring circuit board 202, wherein the main control circuit board 101 is connected with a water pump 102 so as to control water outlet of the water pump 102; as shown in fig. 1, 2 and 6, a control end of the main control circuit board 101 is connected to the water pump 102 to perform water outlet regulation control on the water pump 102.
Two ends of the heating circuit 201 are respectively and electrically connected with the input commercial power through a first connecting line 301 and a second connecting line 302; as shown in fig. 1, 2 and 6, since the heating wire 2012 is directly connected to two ends of the commercial power ac through the first connection line 301 and the second connection line 302, the heating wire 2012 is directly powered and heated by the commercial power ac, so that the heating circuit 201 is not directly connected to the main control circuit board 101, and the main control circuit board 101 cannot directly obtain the working state of the heating circuit 201.
The power input end of the state monitoring circuit board 202 is respectively connected with the first connecting line 301 and the second connecting line 302, and the signal output end of the state monitoring circuit board 202 is in circuit connection with the main control circuit board 101 through the third connecting line 303; the heating circuit 201 and the state monitoring circuit board 202 are respectively arranged at positions far away from one end of the main control circuit board 101; because the heating circuit 201 and the state monitoring circuit board 202 are respectively arranged at the position far away from one end of the main control circuit board 101 and are directly and electrically connected with the input mains supply alternating current through the first connecting line 301 and the second connecting line 302, after the power is switched on, the heating wires independently heat under the action of the alternating current and work without being controlled by the main control circuit board 101, and the main control circuit board 101 cannot directly acquire the working state of the heating circuit 201.
The state monitoring circuit board 202 outputs low-voltage direct current, and the first connecting wire 301, the second connecting wire 302 and the third connecting wire 303 are respectively connected to the heating circuit 201 and the state monitoring circuit board 202 from the main control circuit board 101 end through a cable 30; the main control circuit board 101 is used for monitoring the state of the heating circuit 201 through a superimposed electrical signal of the low voltage on the third connection line 303 and the magnetic common mode signal generated by the high voltage on the first connection line 301 and the second connection line 302. As shown in fig. 1, 2 and 6, since the main control circuit board 101 and the heating circuit 201 are respectively disposed on the main unit 10 and the spray head 20, the main unit 10 and the spray head 20 are connected by a connection line and a water pipe, and there is no direct connection and control relationship between the main control circuit board 101 on the main unit 10 and the heating wire 2012. So that the main control circuit board 101 cannot acquire the operating state information of the heating wire 2012. In the embodiment of the present invention, the first connection wire 301, the second connection wire 302 and the third connection wire 303 are respectively connected from the end of the main control circuit board 101 to the end of the heating circuit 201 and the end of the status monitoring circuit board 202 through a cable 30. When the heating wire 2012 is heated, the heating wire 2012 is supplied with power through the first connecting wire 301 and the second connecting wire 302. The third connection line 303 is a low voltage output by the status monitoring circuit board 202, when the first connection line 301, the second connection line 302 and the third connection line 303 are respectively wrapped together by a cable 30 and the heating wire 2012 is heated, alternating large currents are generated on the first connection line 301 and the second connection line 302, and the current is a high voltage large current. The third connection line 303 generates a voltage of an alternating current common mode with the first connection line 301 and the second connection line 302, the common mode voltage is superposed on the low voltage output by the state monitoring circuit board 202, the voltage change rule is similar to the alternating voltage on the first connection line 301 and the second connection line 302, and the main control circuit board 101 can obtain whether the heating wire 2012 is in the working state by detecting the change state of the low voltage on the third connection line. For example, when the main control circuit detects that the low voltage on the third connection is in a voltage change synchronous with the input alternating current, the heating wire can be acquired to be in a heating state. In contrast, when the heating wire 2012 is not heated, there is no alternating current of the high voltage large circuit on the first connection line 301 and the second connection line 302. At this time, the third connection line 303 has no common mode voltage, and the state monitoring circuit board 202 outputs a stable low voltage through the third connection line 303. By detecting that the voltage of the third connection line 303 is a stable low voltage, the main control circuit board 101 on the host 10 can acquire that the heating wire 2012 is in the heating stop state, and can control the water pump 102 to stop pumping water. So as to avoid the phenomenon that the pumped water cannot be heated, evaporated and output due to the stop of the heating wire 2012 and the phenomenon that the water in the heating heater on the spray head 20 of the garment steamer overflows. Similarly, when the main control circuit board detects that the heating wire 2012 works normally, the water pump 102 can be controlled to pump water normally. The heating state of the heating wire 2012 can be obtained by the voltage state of the third connection line 303, which can reduce the use of the connection line between the shower head 20 and the main body 10.
The intelligent heating automatic detection circuit provided by the embodiment of the invention is respectively arranged at the position far away from one end of the main control circuit board through the heating circuit and the state monitoring circuit board, the state monitoring circuit board outputs low-voltage direct current, and the first connecting wire, the second connecting wire and the third connecting wire are respectively connected to the ends of the heating circuit and the state monitoring circuit board from the end of the main control circuit board through a cable; the master control circuit board is used for monitoring the state of the heating circuit through a superposed electric signal of a magnetic common mode signal generated by the low voltage on the third connecting line and the high voltage on the first connecting line and the second connecting line. Therefore, the main control circuit board can acquire whether the heating wire is in the working state or not by detecting the low-voltage electric change state of the third connection so as to control the water pump to pump water to the heater of the spray head. On one hand, the phenomenon that the pumped water cannot be heated, evaporated and output due to the stop work of the heating wire and the overflow phenomenon occurs when the water in the heater on the spray head of the garment steamer is full can be avoided. On the other hand, the use of the connecting wire between the heating wire end of the spray head and the main control circuit board end of the host machine can be reduced.
Referring to fig. 1, the heating circuit 201 includes at least one heating wire 2012 and at least one constant temperature inductor 2013, and each heating wire 2012 is connected to one end of the input ac power through one constant temperature inductor 2013. As shown in fig. 1, in one implementation of the present invention, two heating wires 2012 may be provided. Correspondingly, the number of the constant temperature inductors 2013 is two, and each heating wire 2012 is connected with one end of the alternating current of the mains supply through one constant temperature inductor 2013. The constant temperature inductor 2013 is arranged between the heating wire 2012 and the input commercial power alternating current so as to perform constant temperature heating control on the heating wire 2012. Specifically, the constant temperature inductor 2013 may be disposed near the heating wire 2012 to detect a temperature of the liquid heated by the heating wire 2012, and the constant temperature inductor 2013 may be disconnected when the temperature of the heated liquid is detected to rise to a maximum temperature of the constant temperature inductor 2013. At this time, the heating wire 2012 stops heating due to the power failure, the heating liquid (water in the heater of the head 20) starts to cool down, and the constant temperature sensor 2013 is turned on again when the temperature falls to the lowest temperature of the constant temperature sensor 2013. At this time, power is supplied to both ends of the heating wire 2012, and the liquid is continuously heated, so that the heated liquid can be kept in a constant temperature state.
Referring to fig. 1 and 3, the status monitor circuit board 202 includes a voltage-reducing circuit 2021, a positive power input terminal of the voltage-reducing circuit 2021 is connected to the first connection line 301, a ground terminal of the voltage-reducing circuit 2021 is connected to the second connection line 302, and an output terminal of the voltage-reducing circuit 2021 is connected to the main control circuit board 101 through the third connection line 303. As shown in fig. 1, the two power input terminals of the voltage-reducing circuit 2021 are respectively connected to the first connection line 301 and the second connection line 302 to introduce the commercial power ac into the voltage-reducing circuit 2021, and after the voltage-reducing circuit 2021 reduces the commercial power ac, the voltage-reducing circuit can output a low-voltage signal to the third connection line 303 through the third connection line 303. The main control circuit board 101 can obtain the working state information by detecting the low voltage change signal on the third connection line 303. The water pump 102 can be controlled to pump water or stop pumping water to the spray head 20 at the heating wire 2012 to ensure the constant temperature of the heated water on the spray head 20. In addition, the blood pressure reduction is simple and practical, and the cost is low.
Referring to fig. 1 and 3, the voltage-reducing circuit 2021 includes: a resistor R13, a diode D4, a zener diode ZD2, a capacitor C3, a diode D5 and a resistor R14, wherein one end of the resistor R13 is connected with the first connection line 301; the first connection line 301 is connected through a resistor R13 to introduce one end of the commercial power alternating current to the voltage-reducing circuit 2021.
The other end of the resistor R13 is connected with the anode of the diode D4; the input mains alternating current is rectified into pulsating direct current by a resistor R13 and a diode D4 which are connected in series, and the pulsating direct current is output to the cathode of a voltage stabilizing diode ZD 2.
The cathode of the diode D4 is connected to the cathode of the zener diode ZD2, and the anode of the zener diode ZD2 is connected to the reference ground; the zener diode ZD2 is connected in parallel between the cathode of the diode D4 and the second connection line 302 to regulate the pulsating dc power output from the diode D4, so as to output dc power with a regulated voltage.
One end of the capacitor C3 is connected with the cathode of the voltage stabilizing diode ZD2, and the other end of the capacitor C3 is connected with the reference ground; the capacitor C3 is connected in parallel with the zener diode ZD2 to filter out high frequency noise signals.
The anode of the diode D5 is connected to the cathode of the zener diode ZD 2;
the cathode of the diode D5 is connected to one end of the resistor R14, and the other end of the resistor R14 is connected to the main control circuit board 101 through a third connection line 303. The diode D5 and the resistor R14 can output the regulated signal to the main control circuit board 101 through the third connection line 303. The diode D5 prevents the pull-up power source VCC on the main control circuit board 101 from flowing back to the zener diode ZD 2. The voltage reduction circuit 2021 provided by the embodiment of the present invention is implemented by using discrete components, and has the advantages of low overall circuit cost, relatively easy implementation, and capability of perfectly and completely performing dc voltage reduction conversion on ac voltage.
Referring to fig. 1 and 3, the main control circuit board 101 includes: the controller 1011, the water pump driving circuit 1012 are connected with the controller 1011 and the water pump 102 respectively to drive and control the water pump 102, so as to realize the regulation and control of the water pumping quantity. The proportional relationship between the heat quantity of the heating wire 2012 and the water pumping quantity of the water pump 102 is satisfied so as to keep the water on the spray head 20 at a constant temperature.
The water pump driving circuit 1012 includes: one end of the water pump 102 is connected with one end of the input mains supply alternating current, the anode of the controllable silicon Q1 is connected with the other end of the water pump 102, the cathode of the controllable silicon Q1 is connected with the other end of the input mains supply alternating current, and the control electrode of the controllable silicon Q1 is connected with one control end of the controller 1011 through the resistor R6. As shown in fig. 3, when the controller 1011 needs to control the water pump 102 to pump water, a control end (end P3) of the controller 1011 outputs a control signal. At this time, the thyristor Q1 is turned on, the water pump 102 is connected to both ends of the input power supply, and the water pump 102 operates normally. On the contrary, when the controller 1011 needs to control the water pump 102 to stop pumping water, a control end (end P3) of the controller 1011 does not output a signal, the thyristor Q1 is not turned on, the power supply of the water pump 102 is cut off, and the water pump 102 stops working.
In another aspect, referring to fig. 1 and 6, embodiments of the present invention also provide a garment steamer comprising: the intelligent heating automatic detection circuit, the host 10 and the spray head 20 are arranged in the host 10, and the main control circuit board 101 and the water pump 102 are respectively arranged in the host 10; the sprayer 20 is connected with the main machine 10 through a cable and a water pipe, the first connecting line 301, the second connecting line 302 and the third connecting line 303 are respectively arranged in the cable, and the heating wire 2012 and the state monitoring circuit board 202 are respectively arranged in the sprayer 20. As shown in fig. 6, since the main control circuit board 101 and the water pump 102 are respectively disposed in the main unit 10, the water pump 102 can be controlled by the main control circuit board 101 to pump water in the water tank of the main unit 10 to the spray head 20. The water source and the power source on the spray head 20 are respectively connected with the water pipe through a first connecting line 301, a second connecting line 302 and a third connecting line 303 which are arranged in the cable. On the one hand, the intelligent detection circuit for the state of the garment steamer can avoid the phenomenon that the pumped water cannot be heated, evaporated and output due to the fact that the heating wire 2012 stops working, and the phenomenon that the water in the heater on the spray head 20 of the garment steamer overflows when the heater is full of water. On the other hand, the usage of the connection line between the end of the heating wire 2012 of the shower head 20 and the end of the main control circuit board 101 of the host 10 can be reduced.
In still another aspect, referring to fig. 4, an embodiment of the present invention further provides a method including:
s101, judging whether the heating wire is in a working state, and controlling the water pump to pump water normally if the heating wire is in a normal working state;
s102, if not, judging whether the heating wire is converted from a normal working state to an inoperative state, and if so, controlling the water pump to pump water intermittently;
s103, if not, judging whether the heating wire is converted from the non-operating state to the normal operating state, and if so, controlling the water pump to pump water intermittently;
and S104, if not, judging whether the heating wire is in a non-working state, and if so, controlling the water pump to stop.
Specifically, in step S101, if the heating wire is in the normal operating state, it indicates that the heating wire is in the normal heating state, and the water pumped by the water pump is heated into steam and sprayed out through the spray head, and at this time, the main control circuit board on the host controls the water pump to pump water normally. In this case, the heater wire (boiler) and the water pump are required to pump and heat water at the same time, and are in a state of constant temperature, but in practice, the heating of the heater wire (boiler) may cause the water temperature to rise a lot, and the thermostat may be turned off due to over-temperature. At this time, in step S102, it is determined that the heating wire is changed from the normal operation state to the non-operation state. If the main control circuit board continues to pump water according to the original water quantity, the water temperature is rapidly reduced due to water pumping, so that the water of the heater on the spray head is full, the water cannot be heated to be evaporated and sprayed, and the water overflow phenomenon is caused. At the moment, the main control circuit board on the host machine controls the water pump to pump water intermittently, so that the water pumping amount of the water pump is reduced. To reduce the amount of water on the showerhead heater during thermostat off; on one hand, the water in the nozzle heater can be ensured without water break; on the other hand, the phenomenon that water directly overflows when the spray head heater is full of water is avoided. The heating wire stops heating due to power failure, the heating liquid (water in the spray head heater) starts to cool, and when the temperature drops to the lowest temperature of the constant temperature inductor, the constant temperature inductor is switched on again. At this time, power is supplied to the two ends of the heating wire, and the liquid is continuously heated. And S103, judging that the heating wire is changed from the non-working state to the normal working state, controlling the water pump to pump water intermittently, and reducing the water pumping amount of the water pump because the water temperature in the heater is in the lowest voltage state of the constant temperature sensor at the moment and the water pump is controlled to pump water intermittently by the main control circuit board on the host. To reduce the amount of water on the heater of the showerhead during the period from the off-state to the on-state of the constant temperature sensor; during the period, the water temperature in the heater is lower than the normal heating temperature, and water is pumped intermittently, so that the water in the nozzle heater can be ensured without water interruption; on the other hand, the phenomenon that water directly overflows when the spray head heater is full of water is avoided. In the process of heating by the heating wire, the fuse is broken or the constant temperature inductor fails, so that the heating wire cannot be heated normally. In step S104, by determining that the heating wire is in a non-operating state, at this time, the water in the heater of the nozzle cannot be heated into steam, and the main control circuit board on the host controls the water pump to stop, so as to prevent the water in the heater of the nozzle from overflowing.
In the embodiment of the invention, whether the heating wire is in a working state or not is judged through S101, and if the heating wire is in a normal working state, the water pump is controlled to pump water normally; s102, if not, judging whether the heating wire is converted from a normal working state to an inoperative state, and if so, controlling the water pump to pump water intermittently; s103, if not, judging whether the heating wire is converted from the non-operating state to the normal operating state, and if so, controlling the water pump to pump water intermittently; and S104, if not, judging whether the heating wire is in a non-working state, and if so, controlling the water pump to stop. On one hand, the water in the nozzle heater can be ensured without water break; on the other hand, the phenomenon that water directly overflows when the spray head heater is full of water is avoided, so that the reliability of the garment steamer is improved, and the use experience of a user is improved.
Referring to fig. 5, the judging whether the heating wire is in the operating state includes:
s1011, sampling the voltage signal;
and S1012, judging whether the sampling voltage is periodically changed, if the sampling voltage is a periodically changed signal, judging that the heating wire is in a normal working state, and otherwise, judging that the heating wire is in a non-working state.
Specifically, in the steps S1011 and S1012, the main control circuit board and the heating circuit are respectively disposed on the host and the nozzle, the host and the nozzle are connected by a connecting wire and a water pipe, and the main control circuit board on the host and the heating wire are not directly connected and controlled. So that the master control circuit board cannot acquire the working state information of the heating wires. In step S1011, a low voltage on the third connection is detected by the main control circuit. And in step S1012, when the heating wire is heated, an alternating large current is generated on the first connection line and the second connection line, and the current is a high voltage large current. The third connecting line generates a voltage of an alternating current common mode with the first connecting line and the second connecting line, whether the sampling voltage is periodically changed or not is judged, if the sampling voltage is a periodically changed signal, the heating wire is judged to be in a normal working state, otherwise, the heating wire is judged to be in a non-working state, and therefore the use of the connecting line between the sprayer and the host machine can be reduced.
Further, in an embodiment of the present invention, the sampling the voltage signal specifically includes: and in a power frequency period, the voltage signal is sampled for multiple times.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides an intelligence automatic check out circuit that generates heat which characterized in that includes:
the main control circuit board is connected with the water pump so as to control the water outlet of the water pump;
the two ends of the heating circuit are respectively and electrically connected with the input commercial power alternating current through a first connecting wire and a second connecting wire;
the power supply input end of the state monitoring circuit board is respectively connected with the first connecting wire and the second connecting wire, and the signal output end of the state monitoring circuit board is connected with the main control circuit board through a third connecting wire;
the heating circuit and the state monitoring circuit board are respectively arranged at the position far away from one end of the main control circuit board, the state monitoring circuit board outputs low-voltage direct current, and the first connecting wire, the second connecting wire and the third connecting wire are respectively connected to the ends of the heating circuit and the state monitoring circuit board from the end of the main control circuit board through a cable;
the main control circuit board is used for monitoring the state of the heating circuit through a superposed electric signal of a magnetic common mode signal generated by low voltage on the third connecting line and high voltage on the first connecting line and the second connecting line.
2. The intelligent heating automatic detection circuit according to claim 1, wherein the heating circuit comprises at least one heating wire and at least one constant temperature sensor, and each heating wire is connected with one end of the input mains alternating current through one constant temperature sensor.
3. The intelligent heating automatic detection circuit according to claim 2, wherein the state monitoring circuit board comprises a voltage reduction circuit, a positive power input end of the voltage reduction circuit is connected with the first connection line, a ground end of the voltage reduction circuit is connected with the second connection line, and an output end of the voltage reduction circuit is connected with the main control circuit board through the third connection line.
4. The intelligent heating automatic detection circuit according to claim 3, wherein the voltage reduction circuit comprises:
a resistor R13, one end of the resistor R13 being connected to the first connection line;
the other end of the resistor R13 is connected with an anode of the diode D4;
a zener diode ZD2, a cathode of the diode D4 being connected to a cathode of the zener diode ZD2, and an anode of the zener diode ZD2 being connected to a reference ground;
a capacitor C3, one end of the capacitor C3 is connected with the cathode of the zener diode ZD2, and the other end of the capacitor C3 is connected with the reference ground;
a diode D5, an anode of the diode D5 being connected to a cathode of the zener diode ZD 2;
the cathode of the diode D5 is connected with one end of the resistor R14, and the other end of the resistor R14 is connected with the main control circuit board through the third connecting line.
5. The intelligent heating automatic detection circuit of claim 3, wherein the master control circuit board comprises:
a controller;
the water pump driving circuit is respectively connected with the controller and the water pump so as to drive and control the water pump;
the water pump driving circuit includes: silicon controlled rectifier Q1, the one end of water pump is connected with the one end of inputing commercial power alternating current, silicon controlled rectifier Q1 the positive pole with the water pump the other end is connected, silicon controlled rectifier Q1 the negative pole with the other end of inputing commercial power alternating current is connected, silicon controlled rectifier Q1 control pole pass through resistance R6 with a control end of controller is connected.
6. A garment steamer, comprising:
the intelligent heating automatic detection circuit of any one of claims 1 to 5;
the main control circuit board and the water pump are respectively arranged in the main machine;
the shower nozzle, the shower nozzle pass through cable and water pipe with the host computer is connected, first connecting wire, second connecting wire and third connecting wire set up respectively in the cable, heater strip and state monitoring circuit board are installed respectively and are set up in the shower nozzle.
7. A garment steamer water pump adjustment method, comprising:
judging whether the heating wire is in a working state, and if the heating wire is in a normal working state, controlling the water pump to pump water normally;
otherwise, judging whether the heating wire is converted from a normal working state to an inoperative state, and if so, controlling the water pump to pump water intermittently;
otherwise, judging whether the heating wire is converted from the non-working state to the normal working state, and if so, controlling the water pump to pump water intermittently;
otherwise, judging whether the heating wire is in a non-working state, and if so, controlling the water pump to stop.
8. The garment steamer water pump adjustment method of claim 7, wherein the determining whether the heater wire is in an operating state comprises:
sampling the voltage signal;
and judging whether the sampling voltage is in periodic variation or not, if so, judging that the heating wire is in a normal working state, and otherwise, judging that the heating wire is in a non-working state.
9. The garment steamer water pump adjustment method of claim 7, wherein the sampling of the voltage signal specifically comprises: and in a power frequency period, the voltage signal is sampled for multiple times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010978466.4A CN112051500A (en) | 2020-09-17 | 2020-09-17 | Intelligent heating automatic detection circuit, garment steamer and water pump adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010978466.4A CN112051500A (en) | 2020-09-17 | 2020-09-17 | Intelligent heating automatic detection circuit, garment steamer and water pump adjusting method |
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| CN112051500A true CN112051500A (en) | 2020-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114878198A (en) * | 2022-06-06 | 2022-08-09 | 珠海格力电器股份有限公司 | Fault detection circuit and method and air conditioning equipment |
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2020
- 2020-09-17 CN CN202010978466.4A patent/CN112051500A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114878198A (en) * | 2022-06-06 | 2022-08-09 | 珠海格力电器股份有限公司 | Fault detection circuit and method and air conditioning equipment |
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