CN211575559U - Water flow detection circuit, water mixing device, electric control device and electric water heater thereof - Google Patents
Water flow detection circuit, water mixing device, electric control device and electric water heater thereof Download PDFInfo
- Publication number
- CN211575559U CN211575559U CN201922131149.4U CN201922131149U CN211575559U CN 211575559 U CN211575559 U CN 211575559U CN 201922131149 U CN201922131149 U CN 201922131149U CN 211575559 U CN211575559 U CN 211575559U
- Authority
- CN
- China
- Prior art keywords
- water
- signal
- power
- power supply
- output
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Landscapes
- Domestic Plumbing Installations (AREA)
Abstract
The application discloses rivers detection circuitry, water admixing device, electrically controlled device and electric water heater thereof. The water flow generator comprises a power output end, and the power output end outputs an alternating current signal; the signal acquisition end is connected with the power output end, a power switch signal is correspondingly output by detecting an alternating current signal output by the water flow generator, whether water flows or not is judged by the alternating current signal output by the water flow generator, and the detection module has higher sensitivity compared with a magnetic induction signal adopting a Hall sensor, and the water flow generator is not only used for water flow power generation, but also used for detecting a water flow state, and can play a role in saving cost. In addition, the power switch signal can be applied to the switching power supply of the electric water heater or the input commercial power, the water and electricity isolation after boiling water is realized, the embodiment has high response speed and high sensitivity, and the safety of the electric water heater can be effectively improved.
Description
Technical Field
The embodiment of the application relates to but is not limited to the field of electric water heaters, and in particular relates to a water flow detection circuit, a water mixing device, an electric control device and an electric water heater thereof.
Background
Along with the continuous popularization of new energy technology, the electric water heater is more popular, and along with the continuous expansion of the market of the electric water heater, the safety requirement of people on the electric water heater is increased. At present, although the electric water heater on the market is declared to adopt the technology similar to an electricity-proof wall, most of the electric water heater cannot be separated from water and electricity, and the heating pipe of the electric water heater is directly soaked in water, so that the risk of electric leakage exists.
At present, some electric water heaters claim to realize the function of water outlet power off, but the electric water heaters actually detect signals of the Hall water flow sensor during working so as to control the on-off of the heating pipe relay, on one hand, the starting flow of the Hall water flow sensor is about 1L/min, and under the condition of small water flow, the electric water heater can not be powered off in time. On the other hand, even if the control heating pipe relay is turned off, the switching power supply portion of the electric water heater actually continues to operate in this case, and there is still a risk of electric leakage, for example, current may leak from the ground.
SUMMERY OF THE UTILITY MODEL
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the embodiments of the present application.
The embodiment of the application provides a water flow detection circuit, a water mixing device, an electric control device and an electric water heater thereof, which can improve the sensitivity of water detection and the safety of the electric water heater.
In a first aspect, an embodiment of the present invention provides a water flow detection circuit, including:
the water flow generator is used for converting water energy into electric energy and comprises a power supply output end, and the power supply output end outputs an alternating current signal;
the detection module comprises a signal acquisition end and a signal output end, wherein the signal acquisition end is connected with the power output end, receives an alternating current signal from the power output end through the signal acquisition end, and outputs a power switch signal in response to the received alternating current signal when the frequency of the alternating current signal is detected to reach a preset value.
The utility model discloses the rivers detection circuitry of first aspect embodiment detects alternating current signal's frequency works as alternating current signal's frequency reaches the default, and the alternating current signal output switch signal that signal output part response received, because the rotational speed and the discharge of rivers generator have been reflected to the alternating current signal's of rivers generator output frequency to can judge whether water flows through alternating current signal's frequency, not only have higher sensitivity for the magnetism sensing signal that adopts hall sensor, moreover rivers generator not only is used for rivers electricity generation, can also obtain the discharge state through the frequency that detects alternating current signal, need not to use other detection device, can play the effect of saving the cost. In addition, the power switch signal can be applied to the switching power supply of the electric water heater or the input commercial power, the water and electricity isolation after boiling water is realized, the embodiment has high response speed and high sensitivity, and the safety of the electric water heater can be effectively improved.
In an embodiment of the first aspect, the detection module includes:
the control unit is used for controlling the output of the power switch signal;
the alternating current detection circuit is used for converting the alternating current signal into a square wave signal, the input end of the alternating current detection circuit is connected with the output end of the power supply, and the output module of the alternating current detection circuit is connected with the input end of the control unit;
the output module is connected with the control unit and used for outputting the power switch signal;
the control unit detects the frequency of the square wave signal, and responds to the square wave signal to output the power switch signal through the output module square wave signal block when the frequency reaches a preset value.
In this embodiment, the alternating current signal is converted into the square wave signal by the alternating current detection circuit, so that the control unit can conveniently judge the state of the water flow generator, when the water flow generator works, the control unit detects that the frequency of the square wave signal reaches a preset value, and the output module outputs the power switch signal.
The utility model discloses in an embodiment of the first aspect, alternating current detection circuitry includes power input end, first diode, second diode, the negative pole of first diode with power input end connects, the positive pole of first diode with the negative pole of second diode is connected, the positive pole ground connection of second diode, power output end connects between the positive pole of first diode and the negative pole of second diode, the input of the control unit is connected between the positive pole of first diode and the negative pole of second diode.
In this embodiment, the circuit arrangement of the first diode and the second diode forms a clamping diode, which can convert the ac signal into a stable square wave signal, thereby facilitating the discrimination processing of the control unit.
The utility model discloses in an embodiment of the first aspect, still include bleeder circuit, power output end passes through bleeder circuit with the control unit's input is connected. Through bleeder circuit, can reduce the voltage of hydroelectric generator power output end, be convenient for the control unit discerns.
In an embodiment of the first aspect, the output module is a wireless transmitting module or a wired output port. In this embodiment, the output module may be wireless or wired, and when the output module is a wireless transmitting module, the power switch signal may be transmitted through a wireless signal, which may facilitate wiring and installation. When the output module is a wired output port, the power switch signal is transmitted in a wired mode, so that the cost is low, and the stability and the anti-interference capability are high.
The utility model discloses in an embodiment of the first aspect, the control unit is bluetooth module, output module is bluetooth antenna, bluetooth module response square wave signal passes through bluetooth antenna output the switch signal. In the embodiment, the identification of the square wave signal and the control of the power switch signal are realized by utilizing the control capability of the Bluetooth module, so that the cost of hardware is effectively saved.
The utility model discloses in an embodiment of the first aspect, still include charging source and charging circuit, charging source's output module with detection module's feeder ear is connected, power output end passes through charging circuit with charging source connects. In this embodiment, charging source provides the power supply for detection module, ensures that detection module homoenergetic normally works at any time, rivers generator's power output passes through charging circuit does charging source provides the electric energy that charges, need not to change power or external power supply, can make full use of rivers generator provide the dual-purpose advantage of charging and detecting.
The utility model discloses in an embodiment of the first aspect, charging circuit includes rectifier circuit, voltage stabilizing circuit and filter circuit, power output end, rectifier circuit, voltage stabilizing circuit, filter circuit and charging source connect gradually.
The utility model discloses in an embodiment of second aspect, a water admixing device is provided, including mixing the water cavity, still include the aforesaid the utility model discloses the rivers detection circuitry of any one embodiment of first aspect, the rivers generator sets up in mixing the water cavity.
In this embodiment, a water flow generator is arranged in a water mixing cavity of the water mixing device, and after a user opens the water mixing device, water in the water mixing cavity flows, so that a rotor of the water flow generator is driven to rotate and generate an alternating current signal, and a detection module in a water flow detection circuit detects whether the frequency of the alternating current signal reaches a preset value, so as to respond and output a power switch signal. Whether water flows is judged through alternating current signals output by the water flow generator, the water flow generator has high sensitivity, is used for water flow power generation, can obtain a water flow state through detecting the frequency of the alternating current signals, does not need to use other detection devices, and can play a role in saving cost. The user only need will the utility model discloses in water admixing device installs to electric water heater, can effectively detect user's the water condition to the response sends switch signal, switch signal can be applied to disconnection electric water heater's switching power supply or input commercial power, realize that the water and electricity is kept apart behind the boiling water, this embodiment response speed is fast, sensitivity is high, can effectively improve electric water heater's security.
In an embodiment of the second aspect, the water mixing cavity includes a cold water input end, a hot water input end and a water outlet end, and the water flow generator is disposed at the water outlet end. The water flow generator is arranged at the water mixing and discharging end of the water mixing device, the water flow at the position is the largest, and the position of the user for water or water is really reflected.
An embodiment of the third aspect of the utility model provides an electric control device, including power module and the utility model discloses the muddy water device of any one embodiment of second aspect, power module is including the alternating current input end that is used for connecting the commercial power and the alternating current output end that is used for the power supply of electric water heater, power module includes the controller, is used for controlling switch and the signal input part of alternating current output, the controller respectively with the switch with signal input part connects, signal input part with detection module's signal output part connects, the controller response comes from signal output part's switch signal control the break-make of switch.
In the embodiment, the power supply module and the water mixing device are used in a matched mode, the water mixing device is installed in the electric water heater, the power supply module supplies power to the electric water heater, when a user uses the water mixing device to control water outlet, the water flow detection circuit works and sends a power switch signal to the power supply module through the detection module, the controller of the power supply module receives the power switch signal and controls on and off of the switch, namely the power supply module can accurately know the water using condition of the user according to the working state of the water mixing device and correspondingly controls power supply of the power supply module, when the user uses water, the power supply module can be disconnected from the electric water heater, real water and electricity isolation is achieved, and using safety of the electric water heater is improved.
The utility model discloses an embodiment of third aspect, power module is the power supply socket, the alternating current input be for set up in mains plug on the power supply socket, the mains socket of alternating current output for supplying power water heater plug connection. In this embodiment, the power supply module is the power supply socket, and the user only needs to insert the plug of electric water heater in the commercial power socket to insert the commercial power plug of power supply socket in the socket of wall, can accomplish the erection joint, and it is very convenient to use.
An embodiment of the fourth aspect of the present invention provides an electric water heater, including the present invention, the water flow detection circuit of any embodiment of the first aspect, or including the water mixing device of any embodiment of the second aspect, or including the electric control device of any embodiment of the third aspect.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.
Fig. 1 is a schematic structural diagram of an electric water heater according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a heating module of an electric water heater according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of a water flow detection circuit according to an embodiment of the present invention;
fig. 4 is a schematic block diagram of a detection module according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a water flow detection circuit according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a detection module according to an embodiment of the present invention;
fig. 7 is a schematic block diagram of an electric control device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be noted that although functional blocks are partitioned in a schematic diagram of an apparatus and a logical order is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the partitioning of blocks in the apparatus or the order in the flowchart. The terms first, second and the like in the description and in the claims, and the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Referring to fig. 1, an electric water heater according to an embodiment of the present invention includes a water storage tank 101, a heating module 102 is disposed in the water storage tank 101 for heating water in the water storage tank 101, the heating module 102 is connected to a mains supply through a power line, and the electric water heater further includes a water mixing device 110 (e.g., a water mixing valve), the water mixing device 110 includes a cold water input end 111, a hot water input end 112, and a water outlet end 113, wherein the hot water input end 112 is connected to the water storage tank 101, the cold water input end 111 is connected to a tap water pipe, and the water outlet end 113 is connected to a faucet or a shower head. For electric water heaters, the user draws water from the outlet end 113 by opening the mixing device 110. Referring to fig. 2, a schematic circuit diagram of the heating module 102 is shown, and includes a heating pipe 201, a switching power supply 202 and a power plug 103, the switching power supply 202 supplies power to the heating pipe 201 to heat water in the water storage tank 101, and a user uses the adjusting water mixing device 110 to introduce hot water in the water storage tank 101 into the hot water input end 112, and since the heating pipe 201 is electrified, if the user forgets to disconnect the power plug 103 when using water, a safety fault is likely to occur. Among the prior art, including the power supply of disconnection switch power supply when detecting the water storage tank temperature and reaching the settlement temperature, perhaps detect the user and open the power supply of control switch power supply disconnection heating pipe behind the water admixing device, for example the relay between disconnection switch power supply and the heating pipe to the user can break off the power supply of heating pipe when the water, declare to realize water and electricity separation. In the prior art, a hall water flow sensor is usually used for detecting whether a user uses water, however, on one hand, the starting flow of the existing hall water flow sensor is about 1L/min, and under the condition of small water flow, the situation that an electric water heater cannot be powered off in time may occur. On the other hand, even if the control heating pipe relay is turned off, the switching power supply portion of the electric water heater actually continues to operate in this case, and there is still a risk of electric leakage, for example, current may leak from the ground.
Based on this, referring to fig. 3, an embodiment of the first aspect of the present invention provides a water flow detection circuit, including:
the water flow generator 301 is arranged in the water mixing device 110 and is used for converting water energy into electric energy, the water flow generator 301 comprises a power output end 302, and the power output end 302 outputs an alternating current signal;
the detection module 303 includes a signal acquisition terminal 304 and a signal output terminal 305, where the signal acquisition terminal 304 is connected to the power output terminal 302, the signal acquisition terminal 304 receives an ac signal from the power output terminal 302, and when it is detected that the frequency of the ac signal reaches a preset value, the signal output terminal 305 outputs a power switch signal in response to the received ac signal.
In this embodiment, when the user opens the water mixing device 110, the water flow passes through the water guiding cap of the water flow generator 301, the water flow direction is adjusted to impact the impeller, the magnet rotor of the water flow generator 301 is driven to rotate, the magnet rotor cuts the magnetic induction line when rotating, and an alternating current signal with variable frequency is generated, and the alternating current signal is used for supplying power to the electronic element, for example, charging a battery or supplying power to the detection module 303. The detection module 303 can determine the rotation speed of the water flow generator 301 by detecting the frequency of the alternating current signal output by the water flow generator 301, so as to determine whether water flows, and due to the structural advantage of the water flow generator 301, the rotation speed of the water flow generator 301 can reach 200 plus 1000rpm/min at low flow (for example, at 0.2-1L/min), and has higher sensitivity compared with a magnetic induction signal adopting a hall sensor, so that the water flow condition can be detected at low flow, and power can be cut off in time.
The water flow generator 301 is not only used for water flow power generation, but also can judge the rotating speed of the water flow generator 301 and the specific water flow through detecting the frequency of the alternating current signal, so as to detect the water flow state, and other detection devices such as a hall sensor are not needed, so that the cost can be saved. In addition, the power switch signal can be applied to the switching power supply 202 of the electric water heater or the input commercial power, the water and electricity isolation after boiling water is realized, the embodiment has high response speed and high sensitivity, and the safety of the electric water heater can be effectively improved.
The detection module 303 may process the ac power signal in the following manner to determine whether the user uses water or continuously uses water, and one manner is to perform zero-crossing detection on the ac power signal, count the number of times or frequency that the ac power signal passes through a zero-crossing point, obtain the rotation speed of the water flow generator 301, and determine whether the user uses water; in another mode, the ac signal is converted into a voltage value (for example, the ac signal is rectified and stabilized), and whether the rotation speed of the generator reaches a preset value is determined according to the voltage value range.
Referring to fig. 4, in an embodiment of the first aspect of the present invention, the detecting module 303 includes:
a control unit 401 for controlling the output of the power switch signal;
the alternating current detection circuit 402 is used for converting the alternating current signal into a square wave signal, the input end of the alternating current detection circuit 402 is connected with the power output end 302, and the output end of the alternating current detection circuit 402 is connected with the input end of the control unit 401;
an output module 403 connected to the control unit 401, configured to output the power switch signal;
the control unit 401 outputs the power switching signal through the output module 403 in response to the square wave signal.
In this embodiment, the ac detection circuit 402 is configured to process the ac signal of the water flow generator 301 and convert the ac signal into a square wave signal; in one embodiment, the square wave signal reflects a zero-crossing signal of the ac electrical signal, and in another embodiment, the square wave signal reflects a voltage or a set threshold voltage near a peak and a trough of the ac electrical signal, for example, when the voltage of the ac electrical signal is higher than 3.3V, a high level signal is output, and when the voltage of the ac electrical signal is lower than 3.3V, a low level signal is output. This embodiment can facilitate the control unit 401 to determine the state of the water flow generator 301, and when the water flow generator 301 is working, the control unit 401 outputs the power switch signal through the output module 403.
In an embodiment, the output module 403 may be a wireless transmitting module, such as a wireless 2.4G or 5G radio frequency antenna, an infrared output module, a bluetooth radio frequency circuit, a WiFi antenna, and the like, so that the power switch signal may be transmitted to the corresponding power supply control device through a wireless signal, which is convenient for wiring and installation. The power switch signal may be directly sent to only the corresponding power supply control device, or may be transmitted through a relay, for example, through a local area network or an ethernet or the internet established by a wireless router, so as to implement a smart home scheme.
In another embodiment, the output module 403 may be a wired output port, such as an I/O port, I2The C port, the RJ-45 wired network port and the like transmit the power switch signal in a wired mode, so that the cost is low, and the stability and the anti-interference capability are high.
Referring to fig. 5, the water flow detecting circuit according to the embodiment of the first aspect of the present invention, the alternating current detecting circuit 402 includes a power input terminal VCC, a first diode D1, a second diode D2, a cathode of the first diode D1 is connected to the power input terminal VCC, an anode of the first diode D1 is connected to a cathode of the second diode D2, an anode of the second diode D2 is grounded, the power output terminal 302 is connected between an anode of the first diode D1 and a cathode of the second diode D2, and an input terminal of the control unit is connected between an anode of the first diode D1 and a cathode of the second diode D2. In this embodiment, the input terminal and the output terminal of the ac detection circuit 402 are both disposed between the anode of the first diode D1 and the cathode of the second diode D2, and the circuit arrangement of the first diode D1 and the second diode D2 forms a clamping diode, which clamps the voltage within a specific range and then provides the voltage to the inside of the control unit 401, taking the voltage VCC at the power input terminal VCC of 3.3V as an example. When the voltage GOUT of the ac signal output by the water current generator 301 exceeds VCC, GOUT flows into the power supply VCC through the diode D2, so that the voltage GOUT is clamped at VCC + the conduction voltage drop of the diode by 0.7V, that is, 3.3+ 0.7V — 4.0V. The control unit 401 takes a single chip microcomputer as an example, and recognizes a high level when the input voltage of a pin is greater than 0.7 times of the VCC power supply; when the input voltage is less than 0.3 times the VCC power supply, a low level is recognized. The rotating speed of the generator can be calculated by detecting the times of the high and low levels, or the water flow generator 301 is judged to work according to the triggering of the high and low levels, in other words, the water flow condition in the water mixing cavity or the water mixing pipe can be obtained, so that a power switch signal is correspondingly output. In this embodiment, the alternating current signal can be converted into a stable square wave signal, which is convenient for the determination processing of the control unit 401.
Referring to fig. 5, the water flow detection circuit according to the embodiment of the first aspect of the present invention further includes a voltage dividing circuit 501, and the power output end 302 is connected to the input end of the control unit 401 through the voltage dividing circuit 501. The voltage dividing circuit 501 includes a first resistor R1 and a second resistor R2, the power output terminal 302 of the water current generator 301 is grounded through a first resistor R1 and a second resistor R2, and the alternating current signal is divided by the first resistor R1 and the second resistor R2 and then output between the anode of the first diode D1 and the cathode of the second diode D2 from between the first resistor R1 and the second resistor R2. The voltage of the power output end 302 of the water flow generator 301 can be reduced through the voltage dividing circuit 501, so that the control unit 401 can conveniently recognize the voltage.
Referring to fig. 6, the water flow detecting circuit according to the first aspect of the present invention, the control unit 401 is a bluetooth module, the output module 403 is a bluetooth antenna, the bluetooth module outputs a power switch signal through the bluetooth antenna, the bluetooth module has a part of functions of a single chip microcomputer in addition to a bluetooth communication function, and can satisfy a function of detecting a high/low level of an IO port, and can replace the single chip microcomputer through the bluetooth module, as shown in fig. 6, an INT0 pin is an input terminal of the bluetooth module, and receives an ac signal from the water flow generator 301 or a divided and converted square wave signal, referring to the above embodiments, the bluetooth module can process the ac signal or the square wave signal in various ways, so as to measure whether there is water flow in the water mixing device 110 and send the power switch signal to a corresponding power supply module 701, and the power supply module 701 disconnects the power supply of the electric water heater, ensure that the user can realize real water-electricity separation when using water. In the embodiment, the identification of the square wave signal and the control of the power switch signal are realized by utilizing the control capability of the Bluetooth module, so that the cost of hardware is effectively saved.
Referring to fig. 3 and 5, the utility model discloses the rivers detection circuitry of first aspect embodiment still includes charging source 306 and charging circuit 307, charging source 306's output with detection module 303's power supply end is connected, because under the condition of low discharge, if rivers generator 301 directly supplies power for detection module 303, for example for foretell bluetooth module direct power supply, then need rivers velocity of flow to reach enough voltage drive bluetooth module and start under the condition of certain speed, there may be 1 to 2 seconds of delay about, in order to guarantee the promptness of outage, therefore, be provided with charging source 306 in this embodiment and supply power for detection module 303, as long as rivers engine rotates the back, can the short-term test user is using water, thereby send the switch signal of disconnection power supply to power module 701. The charging power source 306 may be a rechargeable battery or a farad capacitor of various specifications. When the control unit 401 detects that the peak of the ac electrical signal output by the water flow generator 301 reaches 0.7 times + the diode turn-on voltage of VCC, that is, 3.3 × 0.7+0.7 ═ 3V, it can be switched to be directly powered by the water flow generator 301, and the two-stage power supply mode not only avoids the problem of disconnection delay of the smart socket, but also avoids the electric quantity of the charging power supply 306 from being consumed too quickly.
Referring to fig. 5, the water flow generator 301 charges the charging power source 306 through the charging circuit 307, so that the user does not need to replace the charging power source 306. The charging circuit 307 comprises a rectifying circuit 502, a voltage stabilizing circuit 503 and a filtering circuit 504, and the power output end 302, the rectifying circuit 502, the voltage stabilizing circuit 503, the filtering circuit 504 and the charging power supply 306 are connected in sequence. The rectifying circuit 502 is a rectifying bridge BD1, an alternating current signal output by the water flow generator 301 is subjected to full-bridge rectification to output direct current through the rectifying bridge BD1, and then is stabilized to a power supply VCC through a voltage stabilizing circuit 503 composed of a voltage stabilizing diode D3, the direct current voltage component obtained through rectification and stabilization is actually pulsating direct current, the ripple factor is large, and filtering processing is required, wherein a filtering circuit 504 composed of R3 and an electrolytic capacitor EC1 is used for absorbing the peak value in the pulsating component and filling pits generated when the rectifying bridge diode is reversed, so that the filtered direct current voltage is close to pure direct current, and then the high-frequency noise on the power supply is filtered through a parallel patch capacitor C1, so that a smooth and flat VCC power supply can be obtained, and the detection module 303 and the charging power supply 306 are supplied with power.
Referring to fig. 1, an embodiment of the second aspect of the present invention provides a water mixing device 110, which further includes the above-mentioned water flow detection circuit according to any one embodiment of the first aspect of the present invention, wherein the water flow generator 301 is disposed in the water mixing cavity. In this embodiment, the water flow generator 301 is disposed in the water mixing cavity of the water mixing device 110, and when a user opens the water mixing device 110, water in the water mixing cavity flows to drive the rotor of the water flow generator 301 to rotate and generate an ac electrical signal, and the detection module 303 in the water flow detection circuit detects the ac electrical signal, so as to respond and output a power switch signal. Whether water flows or not is judged through the alternating current signal output by the water flow generator 301, so that the water flow generator 301 has high sensitivity, is used for generating water flow and detecting the water flow state, and can play a role in saving cost. The user only need will the utility model discloses water admixing device 110 of embodiment installs to electric water heater in, can effectively detect user's the water condition to the alternating current signal transmission of response rivers generator 301 corresponds the switch signal, the switch signal can be applied to switching power supply 202 or the input commercial power of disconnection electric water heater, realize that the water and electricity is kept apart behind the boiling water, this embodiment response speed is fast, sensitivity is high, can effectively improve electric water heater's security.
Referring to fig. 1, in the water mixing device 110 according to the embodiment of the present invention, the water mixing cavity includes a cold water input end 111, a hot water input end 112, and a water outlet end 113, and the water flow generator 301 is disposed at the water outlet end 113. The water flow motor is installed at the mixed water outlet end 113 of the water mixing device 110, and the water flow at this position is the largest, which is also the position that can truly reflect the existence of water for users.
Referring to fig. 7, an embodiment of the third aspect of the present invention provides an electric control device, including a power supply module 701 and the water mixing device 110 of any one embodiment of the second aspect of the present invention, the power supply module 701 includes an ac input terminal 702 for connecting the utility power and an ac output terminal 703 for supplying power to the electric water heater, the power supply module 701 includes a controller 704, a switch 705 for controlling the output of the ac output terminal 703 and a signal input terminal 706, the controller 704 is respectively connected with the switch and the signal input terminal 706, the signal input terminal 706 is connected with the signal output terminal 305 of the detection module 303, and the controller 704 responds to a power switch signal from the signal output terminal 305 to control the on-off of the switch 705. For example, in an embodiment, the output module 403 may be a wireless transmitting module, such as a wireless 2.4G or 5G radio frequency antenna, an infrared output module, a bluetooth radio frequency circuit, a WiFi antenna, and the like, so that the power switch signal can be transmitted to the corresponding power supply control device through a wireless signal, which is convenient for wiring and installation. The power switch signal can be directly sent to the corresponding power supply control device or can be passed throughAnd then transmitting the data, such as a local area network built by a wireless router or an Ethernet or the Internet, so as to realize the scheme of intelligent home. In another embodiment, the output module 403 may be a wired output port, such as an I/O port, I2The C port, the RJ-45 wired network port and the like transmit the power switch signal in a wired mode, so that the cost is low, and the stability and the anti-interference capability are high.
In this embodiment, the power supply module 701 and the water mixing device 110 are used in cooperation, the water mixing device is installed in an electric water heater, the power supply module 701 supplies power to the electric water heater, when a user uses the water mixing device 110 to control water outlet, the water flow detection circuit works and sends a power switch signal to the power supply module 701 through the detection module 303, the controller 704 of the power supply module 701 receives the power switch signal and controls on/off of the switch, that is, the power supply module 701 can accurately know the water consumption condition of the user according to the working state of the water mixing device 110 and correspondingly control power supply of the power supply module 701, and when the user uses water, the power supply module 701 can be disconnected from supplying power to the electric water heater, so that real water and electricity isolation is realized, and the use safety of the electric water heater is improved.
The utility model discloses an embodiment of third aspect, power module 701 is the power supply socket, alternating current input 702 be for set up in mains plug on the power supply socket, alternating current output 703 is the mains socket of power supply water heater plug connection. In this embodiment, the power supply module 701 is a power supply socket, and a user can complete installation and connection only by inserting a plug of an electric water heater into a commercial power socket and inserting a commercial power plug of the power supply socket into a socket on a wall, so that the power supply socket is very convenient to use, and at this time, the power supply socket can also be called an intelligent socket.
An embodiment of the fourth aspect of the present invention provides an electric water heater, including the utility model discloses the water flow detection circuit of any embodiment of the first aspect, for example, be provided with on the hot water export or the total delivery port of electric water heater rivers generator 301, during the user's water use, through the water state that rivers generator 301 accurately detected the user, rivers detection circuit correspondingly sends the switch signal of outage to power module 701, and power module 701 cuts off the power supply. The power supply module 701 may be used for plug connection of an electric water heater in a smart socket manner. Or a switch module disposed between the switch power supply 202 and the plug of the electric water heater. That is, the power supply module 701 may be built-in or external to the electric water heater.
Referring to fig. 1, an embodiment of the fourth aspect of the present invention provides an electric water heater, including a water mixing device 110 according to any embodiment of the second aspect of the present invention. That is, the electric water heater is provided with the water mixing device 110, and after the user opens the water mixing device 110, the water flow detection circuit can detect the water using state of the user, and then sends a power switch signal to power off the power supply module 701.
Referring to fig. 1, an embodiment of the fourth aspect of the present invention provides an electric water heater, including an electric control device according to any embodiment of the third aspect of the present invention. That is, the electric water heater is provided with the water mixing device 110 and the power supply module 701, and after a user opens the water mixing device 110, the water flow detection circuit can detect the water using state of the user, and then sends a power switch signal to power off the power supply module 701.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope of the present invention defined by the claims.
Claims (10)
1. A water flow detection circuit, comprising:
the water flow generator is used for converting water energy into electric energy and comprises a power supply output end, and the power supply output end outputs an alternating current signal;
the detection module comprises a signal acquisition end and a signal output end, wherein the signal acquisition end is connected with the power output end, receives an alternating current signal from the power output end through the signal acquisition end, and outputs a power switch signal in response to the received alternating current signal when the frequency of the alternating current signal is detected to reach a preset value.
2. The water flow detection circuit of claim 1, wherein the detection module comprises:
the control unit is used for controlling the output of the power switch signal;
the alternating current detection circuit is used for converting the alternating current signal into a square wave signal, the input end of the alternating current detection circuit is connected with the output end of the power supply, and the output module of the alternating current detection circuit is connected with the input end of the control unit;
the output module is connected with the control unit and used for outputting the power switch signal;
the control unit detects the frequency of the square wave signal, and responds to the square wave signal to output the power switch signal through the output module when the frequency of the square wave signal reaches a preset value.
3. The water flow detecting circuit according to claim 2, wherein the alternating current detecting circuit comprises a power input terminal, a first diode, a second diode, a cathode of the first diode is connected with the power input terminal, an anode of the first diode is connected with a cathode of the second diode, an anode of the second diode is grounded, the power output terminal is connected between the anode of the first diode and the cathode of the second diode, and an input terminal of the control unit is connected between the anode of the first diode and the cathode of the second diode.
4. The water flow detecting circuit according to claim 2, wherein the output module is a wireless transmitting module or a wired output port.
5. The water flow detecting circuit according to claim 2, wherein the control unit is a bluetooth module, the output module is a bluetooth antenna, and the bluetooth module responds to the square wave signal to output the power switch signal through the bluetooth antenna.
6. The water flow detection circuit according to any one of claims 1 to 5, further comprising a charging power supply and a charging circuit, wherein an output module of the charging power supply is connected to a power supply terminal of the detection module, and the power supply output terminal is connected to the charging power supply through the charging circuit.
7. A water mixing device, which comprises a water mixing cavity and is characterized by further comprising a water flow detection circuit as claimed in any one of claims 1 to 6, wherein the water flow generator is arranged in the water mixing cavity; the water mixing cavity comprises a cold water input end, a hot water input end and a water outlet end, and the water flow generator is arranged at the water outlet end.
8. An electric control device, characterized in that, including power supply module and the muddy water device of claim 7, the power supply module includes alternating current input end for connecting the commercial power and alternating current output end for supplying power to the electric water heater, the power supply module includes a controller, a switch and a signal input end for controlling the output of the alternating current output end, the controller is respectively connected with the switch and the signal input end, the signal input end is connected with the signal output end of the detection module, the controller responds to the power switch signal from the signal output end to control the on-off of the switch.
9. The electrical control device according to claim 8, wherein the power supply module is a power supply socket, the ac power input terminal is a mains plug provided on the power supply socket, and the ac power output terminal is a mains socket to which a plug of a power supply water heater is connected.
10. An electric water heater comprising the water flow detecting circuit according to any one of claims 1 to 6, or,
comprising the mixing device of claim 7, or,
comprising an electrical control device according to any one of claims 8 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922131149.4U CN211575559U (en) | 2019-11-29 | 2019-11-29 | Water flow detection circuit, water mixing device, electric control device and electric water heater thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922131149.4U CN211575559U (en) | 2019-11-29 | 2019-11-29 | Water flow detection circuit, water mixing device, electric control device and electric water heater thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211575559U true CN211575559U (en) | 2020-09-25 |
Family
ID=72532787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922131149.4U Active CN211575559U (en) | 2019-11-29 | 2019-11-29 | Water flow detection circuit, water mixing device, electric control device and electric water heater thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211575559U (en) |
-
2019
- 2019-11-29 CN CN201922131149.4U patent/CN211575559U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105611200B (en) | Zero consumption standby circuit and Zero-power-consumption standby TV | |
| KR101473890B1 (en) | Power supply system cutting off standby electric power | |
| CN213027533U (en) | Cigarette machine equipment and cigarette machine device | |
| CN211575559U (en) | Water flow detection circuit, water mixing device, electric control device and electric water heater thereof | |
| CN110061566A (en) | Internet of Things low-voltage platform area distribution transforming intelligent Circuit Breaker Controller | |
| CN214199229U (en) | Gas-electricity shared energy-saving water outlet device | |
| CN106911176A (en) | A kind of safety device of electric heater with self-powered function | |
| CN216714675U (en) | Water pump water supply control switch and water supply control system | |
| CN207490595U (en) | Power-supplying circuit and electrical equipment | |
| CN206135389U (en) | Under -voltage tripper | |
| CN213027534U (en) | Emergency energy storage device and household appliance | |
| CN201383603Y (en) | Power-saving control device of power socket | |
| CN206379773U (en) | A kind of electric water bottle | |
| CN210930879U (en) | Intelligent electric kettle | |
| CN104460376B (en) | Power supply device of circuit breaker controller, circuit breaker controller and circuit breaker | |
| CN209263373U (en) | A kind of water flow switch control system of electric heater | |
| CN220601817U (en) | Power-off control system of water heater and water heater | |
| CN106707891A (en) | Remote control receiving and key response circuit with extremely low power consumption | |
| CN2521805Y (en) | Domestic electric appliances power source remote-control cut-off energy-saving controller | |
| CN208042533U (en) | A kind of control system of electric water heater | |
| CN206919423U (en) | A kind of safety device with semiconductor temperature differential generating | |
| CN207426673U (en) | The hardware circuit of control and protective switch equipment | |
| CN216290299U (en) | Generator charging system compatible with mains supply | |
| CN219936044U (en) | Relay on-off detection circuit and household appliance | |
| CN204216656U (en) | The supply unit of breaker controller and breaker controller, circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |