CN212785171U - Voltage generating circuit, single-coil electromagnetic valve control circuit and cooker - Google Patents
Voltage generating circuit, single-coil electromagnetic valve control circuit and cooker Download PDFInfo
- Publication number
- CN212785171U CN212785171U CN202021372158.9U CN202021372158U CN212785171U CN 212785171 U CN212785171 U CN 212785171U CN 202021372158 U CN202021372158 U CN 202021372158U CN 212785171 U CN212785171 U CN 212785171U
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- solenoid valve
- capacitor
- coil
- 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
- 238000004146 energy storage Methods 0.000 claims abstract description 43
- 239000003990 capacitor Substances 0.000 claims description 134
- 238000001914 filtration Methods 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 3
- 238000010411 cooking Methods 0.000 abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
The utility model discloses a voltage generation circuit, single coil solenoid valve control circuit and cooking utensils. Wherein, voltage generation circuit includes: the power supply chip is used for generating constant first voltage after being powered by a battery of the single-coil electromagnetic valve control circuit; the boost circuit is used for boosting the first voltage to obtain a second voltage; wherein the first voltage is applied to a control sub-circuit of the single coil solenoid valve control circuit to power the control sub-circuit and the second voltage is applied to a tank circuit of the single coil solenoid valve control circuit to power the tank circuit; when the control sub-circuit controls the single-coil solenoid valve of the single-coil solenoid valve control circuit to be conducted with the energy storage circuit, the energy storage circuit provides current, which is opposite to the valve sucking current of the single-coil solenoid valve in flow direction, to the single-coil solenoid valve, so that the single-coil solenoid valve is closed.
Description
Technical Field
The utility model relates to the technical field of household appliances, especially, relate to a voltage generation circuit, single coil solenoid valve control circuit and cooking utensils.
Background
On a household gas range, a solenoid valve is generally provided for controlling the opening or closing of a gas pipe. When the solenoid valve is a single-coil solenoid valve, a thermocouple is arranged to be connected with the single-coil solenoid valve in parallel, when the gas pipeline is opened, the thermocouple is heated to generate electromotive force, valve sucking current is generated on the single-coil solenoid valve, and the single-coil solenoid valve maintains the opening state of the single-coil solenoid valve under the action of the valve sucking current. If the single-coil solenoid valve is to be closed, a current opposite to the current flow direction of the suction valve needs to be provided, so that the current value of the single-coil solenoid valve is zero, the electromagnetic suction force of the solenoid valve is zero, and the single-coil solenoid valve is closed.
However, in the related art, the lithium battery is used on the gas stove to provide voltage for each component, so that the provided voltage is limited, the reverse current provided for the single-coil electromagnetic valve is small, the current value of the single-coil electromagnetic valve cannot be zero, and the problem that the single-coil electromagnetic valve is unreliable in closing exists.
Therefore, the above-mentioned functions of the gas range need to be optimized.
SUMMERY OF THE UTILITY MODEL
In order to solve the related technical problem, the embodiment of the utility model provides a voltage generation circuit, single coil solenoid valve control circuit and cooking utensils.
The embodiment of the utility model provides a technical scheme is so realized:
an embodiment of the utility model provides a voltage generation circuit, include:
the power supply chip is used for generating constant first voltage after being powered by a battery of the single-coil electromagnetic valve control circuit;
the boost circuit is used for boosting the first voltage to obtain a second voltage; wherein,
the first voltage is applied to a control sub-circuit of the single coil solenoid valve control circuit to power the control sub-circuit, and the second voltage is applied to a tank circuit of the single coil solenoid valve control circuit to power the tank circuit; when the control sub-circuit controls the single-coil solenoid valve of the single-coil solenoid valve control circuit to be conducted with the energy storage circuit, the energy storage circuit provides current, which is opposite to the valve sucking current of the single-coil solenoid valve in flow direction, to the single-coil solenoid valve, so that the single-coil solenoid valve is closed.
In the above aspect, the boost circuit includes:
the N boosting sub-circuits are sequentially connected in series and used for boosting the first voltage by N times;
wherein N is an integer greater than or equal to 1.
In the above solution, the boost sub-circuit includes: the circuit comprises a first capacitor, a second capacitor, a first diode and a second diode; wherein,
one end of the first capacitor is connected with the anode of the first diode, the other end of the first capacitor is connected with the cathode of the input voltage of the boost sub-circuit, the anode of the first diode is further connected with the cathode of the second diode, the cathode of the first diode is connected with one end of the second capacitor, and the other end of the second capacitor is connected with the anode of the second diode and the anode of the input voltage.
In the above scheme, the voltage generation circuit further includes:
and the filter circuit is used for filtering the voltage provided by the battery.
The embodiment of the utility model provides a single coil solenoid valve control circuit is still provided, include: the device comprises a battery, a voltage generating circuit, a control sub-circuit and an energy storage circuit; the voltage generation circuit includes: a power supply chip and a booster circuit; wherein,
the battery is used for supplying power to the power supply chip;
the power supply chip is used for generating a constant first voltage after being powered by the battery; wherein the first voltage is applied to a control sub-circuit of the single coil solenoid valve control circuit to power the control sub-circuit;
the boost circuit is used for boosting the first voltage to obtain a second voltage; wherein the second voltage is applied across a tank circuit of the single coil solenoid valve control circuit to power the tank circuit;
the control sub-circuit is used for controlling the connection or disconnection of the single-coil electromagnetic valve and the energy storage circuit in the single-coil electromagnetic valve control circuit;
the energy storage circuit is used for providing current with a flow direction opposite to that of the valve sucking current of the single-coil electromagnetic valve to the single-coil electromagnetic valve when the control sub-circuit controls the single-coil electromagnetic valve to be conducted with the energy storage circuit, so that the single-coil electromagnetic valve is closed.
In the foregoing solution, the single-coil solenoid valve control circuit further includes: a switching circuit; wherein,
the control sub-circuit is used for generating a control instruction;
the switching circuit is configured to switch on the single-coil solenoid valve and the energy storage circuit or switch off the connection between the single-coil solenoid valve and the energy storage circuit in response to the control instruction.
In the above aspect, the boost circuit includes:
the N boosting sub-circuits are sequentially connected in series and used for boosting the first voltage by N times;
wherein N is an integer greater than or equal to 1.
In the above solution, the boost sub-circuit includes: the circuit comprises a first capacitor, a second capacitor, a first diode and a second diode; wherein,
one end of the first capacitor is connected with the anode of the first diode, the other end of the first capacitor is connected with the cathode of the input voltage of the boost sub-circuit, the anode of the first diode is further connected with the cathode of the second diode, the cathode of the first diode is connected with one end of the second capacitor, and the other end of the second capacitor is connected with the anode of the second diode and the anode of the input voltage.
In the above scheme, the voltage generation circuit further includes:
and the filter circuit is used for filtering the voltage provided by the battery.
The embodiment of the utility model provides a cooking utensils are still provided, including arbitrary above-mentioned single coil solenoid valve control circuit and cooking utensils body, single coil solenoid valve control circuit sets up at cooking utensils body internally.
In the voltage generation circuit, the single-coil solenoid valve control circuit and the cooker provided by the embodiment of the utility model, the power chip of the voltage generation circuit generates a constant first voltage after being powered by the battery of the single-coil solenoid valve control circuit; and applying the first voltage to a control sub-circuit in the single coil solenoid valve control circuit to power the control sub-circuit; a boosting circuit of the voltage generating circuit boosts the first voltage generated by the power supply chip to obtain a second voltage; and applying the second voltage to a tank circuit in the single coil solenoid valve control circuit to power the tank circuit; when the control sub-circuit controls the single-coil electromagnetic valve in the single-coil electromagnetic valve control circuit to be conducted with the energy storage circuit, the energy storage circuit provides current, which is opposite to the valve sucking current of the single-coil electromagnetic valve in flow direction, to the single-coil electromagnetic valve, so that the single-coil electromagnetic valve is closed. According to the embodiment of the utility model, the power chip provides a stable first voltage for the control sub-circuit in the single coil solenoid valve control circuit, and the voltage value of the first voltage is lower, so that the current in the control sub-circuit is smaller, and the power consumption consumed by the control sub-circuit is lower; meanwhile, a second voltage generated after the first voltage is boosted by the boosting circuit is output to an energy storage circuit in the single-coil electromagnetic valve control circuit, and the voltage value of the second voltage is higher, so that the current provided by the energy storage circuit to the single-coil electromagnetic valve is larger, and the reliability of closing the single-coil electromagnetic valve is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a voltage generating circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a voltage boost circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another voltage generating circuit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a single-coil solenoid valve control circuit according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another single-coil solenoid valve control circuit according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a single-coil solenoid valve control circuit according to an embodiment of the present invention;
fig. 7 is a schematic flow chart of a voltage generating method according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
For a gas stove, when the functions of timing fire shutoff and dry-burning prevention fire shutoff are realized, an electromagnetic valve is generally adopted to control the closing and opening of a gas pipeline; wherein, make the gas channel close after shutting off the solenoid valve to realize closing the fire. Generally, a dual-coil solenoid valve is used in a gas range, and a triode is used to perform conduction and closing of the dual-coil solenoid valve. Specifically, when the triode is conducted, the battery provides a certain current for the secondary coil in the double-coil electromagnetic valve, so that the secondary coil generates electromagnetic attraction to counteract the electromagnetic attraction in the main coil, and the double-coil electromagnetic valve is closed. The secondary coil is provided with a large number of turns, so that the secondary coil can generate a large electromagnetic attraction force by providing a small current to the secondary coil.
However, because the single coil solenoid valve has the advantage of lower cost, many gas cookers also employ single coil solenoid valves. However, the single-coil electromagnetic valve only has one main coil and is connected with the thermocouple in parallel, when the gas stove works in a combustion mode, the thermocouple is heated to generate electromotive force, valve sucking current is generated for the single-coil electromagnetic valve, and the single-coil electromagnetic valve is maintained to suck the valve. When the single-coil electromagnetic valve is closed, a reverse current opposite to the valve sucking current needs to be injected into the single-coil electromagnetic valve from an external circuit so as to counteract the valve sucking current in the single-coil electromagnetic valve coil, so that the current in the single-coil electromagnetic valve coil is zero, and when the electromagnetic attraction of the electromagnetic valve is zero, the electromagnetic valve is reset under the action of the spring to shut off a gas channel. In practical applications, in order to achieve reliable closing (i.e., each time a single-coil solenoid valve is closed, the single-coil solenoid valve is successfully closed, i.e., completely closed), the reverse current injected into the single-coil solenoid valve needs to be greater than 1A, which is much greater than the reverse current required to close the dual-coil solenoid valve.
According to the traditional idea of designing a control circuit of a single-coil electromagnetic valve, an external power supply is required to provide a larger reverse current for a coil of the single-coil electromagnetic valve, so that the closing of the single-coil electromagnetic valve is realized. However, it is difficult to implement the single-coil solenoid valve on the cooker using the battery as the external power source, the battery mounted on the cooker cannot provide a large current, and if a large current is provided, the service life of the battery is reduced, so the traditional idea of designing the single-coil solenoid valve control circuit is not applicable.
Based on this, a single coil solenoid valve control circuit of gas-cooker has been proposed. In the circuit, the voltage of the battery is processed to obtain 5V voltage, the 5V voltage is used for charging a large-capacity aluminum electrolytic capacitor (also called as an electrolytic capacitor), so that the aluminum electrolytic capacitor stores electric quantity, the connection or disconnection between the aluminum electrolytic capacitor and the single-coil electromagnetic valve is controlled by controlling the connection or disconnection of a metal oxide semiconductor field effect transistor (MOS) tube, and when the aluminum electrolytic capacitor is connected with the single-coil electromagnetic valve by controlling the connection of the MOS tube, the electric quantity stored by the aluminum electrolytic capacitor is used for providing reverse current for the single-coil electromagnetic valve, so that the single-coil electromagnetic valve is closed. When the circuit is designed according to the mode, when the electric quantity required to be stored by the aluminum electrolytic capacitor is set, the voltage value of the 5V voltage applied to the aluminum electrolytic capacitor is small, the capacitor with the large capacitance value is required to be selected to store the electric quantity at the moment, and the capacitor with the large capacitance value is large in size, so that the electric control plate on the gas stove is large in size. Meanwhile, in the circuit, the working voltage provided by other parts of the gas stove, such as the singlechip, is also 5V, however, the working voltage required by the normal work of the singlechip is 3.3V, and when the 5V voltage is adopted for power supply, the power consumption of the singlechip is higher, so that unnecessary energy loss is caused.
Based on this, in the various embodiments of the present invention, the power chip provides a stable first voltage to the control sub-circuit in the single-coil solenoid valve control circuit, and the voltage value of the first voltage is lower, so that the current in the control sub-circuit is smaller, and the power consumption consumed by the control sub-circuit is lower; meanwhile, a second voltage generated after the first voltage is boosted by the boosting circuit is output to an energy storage circuit in the single-coil electromagnetic valve control circuit, and the voltage value of the second voltage is higher, so that the current provided by the energy storage circuit to the single-coil electromagnetic valve is larger, and the reliability of closing the single-coil electromagnetic valve is ensured.
It should be noted that the first and second … … are used herein to refer to elements at different positions only, and do not limit the parameters or functions of the elements.
In addition, the technical solutions described in the embodiments of the present invention can be combined arbitrarily without conflict.
The embodiment of the utility model provides a voltage generation circuit is applied to on the cooking utensils, for example gas-cooker etc. as shown in figure 1, include:
the power supply chip 11 is used for generating a constant first voltage after being powered by a battery of the single-coil electromagnetic valve control circuit;
the boost circuit 12 is used for boosting the first voltage to obtain a second voltage; wherein,
the first voltage is applied to a control sub-circuit of the single coil solenoid valve control circuit to power the control sub-circuit, and the second voltage is applied to a tank circuit of the single coil solenoid valve control circuit to power the tank circuit; when the control sub-circuit controls the single-coil electromagnetic valve of the single-coil electromagnetic valve control circuit to be conducted with the energy storage circuit, the energy storage circuit provides current, which is opposite to the valve sucking current of the single-coil electromagnetic valve in flow direction, to the single-coil electromagnetic valve, so that the single-coil electromagnetic valve is closed.
In practical applications, a lithium primary battery (i.e., a lithium battery that cannot be repeatedly charged and discharged) is generally used as an energy source for the gas stove, and the lithium battery provides electric energy for each sub-circuit on the gas stove. Generally, the voltage supplied by a commercial lithium primary battery is 3V, and the voltage supplied by the lithium primary battery is gradually reduced to 2.1V or the like with the energy loss, so that the voltage supplied by the lithium primary battery is not stable. Based on this, the embodiment of the present invention is provided with a power chip 11, and the power chip 11 can output a constant voltage value regardless of the externally applied voltage (herein, battery voltage). Because the voltage value is constant, when the voltage value is used for supplying power to other sub-circuits, the stability of the power supply voltage of other sub-circuits can be ensured.
In actual use, the power supply chip 11 may be a (direct current) DC/(direct current) DC power supply boost chip, but may be another type of power supply boost chip. The voltage value of the first voltage generated by the power chip 11 is related to the model of the power chip 11, and the voltage value of the first voltage generated by the power chip 11 is correspondingly different when the model of the power chip 11 is selected to be different. For example, 3.3V or 5V, etc.
In practical application, the first voltage may be boosted by voltage doubling rectification. The method comprises the following steps that N boosting sub-circuits which are sequentially connected in series are adopted for boosting, and the N boosting sub-circuits which are sequentially connected in series are used for boosting the first voltage by N times; wherein N is an integer greater than or equal to 1.
Illustratively, when N is 1, the boosting circuit 12 includes 1 boosting sub-circuit, and the 1 boosting sub-circuit boosts the first voltage by 1 time, that is, the voltage (i.e., the second voltage) output by the 1 boosting sub-circuit is twice the first voltage;
when N is 2, the boosting circuit 12 includes 2 boosting sub-circuits connected in series in sequence, where the 2 boosting sub-circuits connected in series in sequence boost the first voltage by 2 times, that is, the voltage (i.e., the second voltage) output by the 2 boosting sub-circuits connected in series in sequence is three times the first voltage; and so on.
In practical applications, in an embodiment, the boost sub-circuit may include: the circuit comprises a first capacitor, a second capacitor, a first diode and a second diode; wherein,
one end of the first capacitor is connected with the anode of the first diode, the other end of the first capacitor is connected with the cathode of the input voltage of the boost sub-circuit, the anode of the first diode is further connected with the cathode of the second diode, the cathode of the first diode is connected with one end of the second capacitor, and the other end of the second capacitor is connected with the anode of the second diode and the anode of the input voltage.
Specifically, as shown in fig. 2, the booster circuit 12 will be described by taking 3 booster sub-circuits as an example.
The 1 st boost sub-circuit includes: a capacitor C1, a capacitor C2, a diode D1 and a diode D2;
the 2 nd boost sub-circuit includes: a capacitor C3, a capacitor C4, a diode D3 and a diode D4;
the 3 rd boost sub-circuit comprises: a capacitor C5, a capacitor C6, a diode D5 and a diode D6;
one end of a capacitor C1 is connected with the anode of a diode D1, the other end of a capacitor C1 is connected with the cathode of the input voltage of the booster sub-circuit, the anode of a diode D1 is also connected with the cathode of a diode D2, the cathode of a diode D1 is connected with one end of a capacitor C2, and the other end of a capacitor C2 is connected with the anode of the diode D2 and the anode of the input voltage;
one end of a capacitor C3 is connected with the anode of the diode D3, the other end of a capacitor C3 is connected with the anode of the diode D1, the anode of the diode D3 is also connected with the cathode of the diode D4, the cathode of the diode D3 is connected with one end of a capacitor C4, and the other end of the capacitor C4 is connected with the anode of the diode D4 and the cathode of the diode D1;
one end of the capacitor C5 is connected to the anode of the diode D5, the other end of the capacitor C5 is connected to the anode of the diode D3, the anode of the diode D5 is also connected to the cathode of the diode D6, the cathode of the diode D5 is connected to one end of the capacitor C6, and the other end of the capacitor C6 is connected to the anode of the diode D6 and the cathode of the diode D3.
Based on the connection relationship of the boosting circuit 12, the circuit principle of the boosting circuit 12 is as follows:
in the 1 st boost sub-circuit, the other terminal of the capacitor C1 and the anode of the diode D2 are connected to an input voltage, where the input voltage refers to the first voltage provided by the power chip. When the first voltage is input, the capacitor C1 and the capacitor C2 start to be charged, so that the capacitor C1 and the capacitor C2 store electricity, and meanwhile, because the diode D1 and the diode D2 are arranged in the circuit, current in the circuit can only flow in a single direction based on the unidirectionality of the diodes, so that the voltage value of the end of the capacitor C2 connected with the cathode of the diode D1 is twice of the input voltage, namely twice of the first voltage.
In the 2 nd boosting sub-circuit, the other end of the capacitor C3 is connected with the anode of the diode D1 in the 1 st boosting sub-circuit, the anode of the diode D4 is connected with the cathode of the diode D1 in the 1 st boosting sub-circuit, the 2 nd boosting sub-circuit charges the capacitor C3 and the capacitor C4 in the 2 nd boosting sub-circuit under the action of the input voltage of the 1 st boosting sub-circuit, so that the capacitor C3 and the capacitor C4 store electric quantity, meanwhile, because the circuit is provided with the diode D3 and the diode D4, the current in the circuit can only flow in one direction based on the unidirectionality of the diodes, therefore, the voltage value of the end of the capacitor C4 connected with the cathode of the diode D3 is higher than the voltage value of the end of the first boosting sub-circuit where the capacitor C2 is connected with the cathode of the diode D1 by an input voltage, namely, the voltage value of the end of the capacitor C4 connected with the cathode of the diode D3 is three times the input voltage value of the input voltage, that is, three times the first voltage.
By analogy, the voltage value of the end of the sixth capacitor C6 connected to the cathode of the fifth diode D5 is four times the input voltage.
Here, the boosted voltage multiple is related to the voltage value of the input voltage, and if the input voltage is 3.3V, the boosted voltage value of the 1 st boosting sub-circuit is 6.6V, the boosted voltage value of the 2 nd boosting sub-circuit is 9.9V, and the boosted voltage value of the 3 rd boosting sub-circuit is 13.2V. In practical application, since electronic components such as diodes divide voltage and the voltage in the circuit is consumed, the boosted voltage value of each boosting sub-circuit is reduced in practical application, for example, the boosted voltage value of the 3 rd boosting sub-circuit is about 12V.
Here, it should be noted that the capacitance value of the capacitor affects the charging speed of the capacitor, that is, the boosting speed of the boosting sub-circuit.
In practical application, in order to ensure the stability of the waveform of the voltage in the circuit and the stability of the circuit, the voltage provided by the battery can be filtered.
Based on this, in an embodiment, as shown in fig. 3, the voltage generation circuit may further include:
and a filter circuit 13 for performing a filtering process on the voltage supplied from the battery.
Here, in practical applications, the filter circuit 13 may include a capacitor, and the voltage provided by the battery is filtered by the capacitor.
In the embodiment of the utility model, the power chip of the voltage generating circuit generates a constant first voltage after being powered by the battery of the single-coil solenoid valve control circuit; and applying the first voltage to a control sub-circuit in the single coil solenoid valve control circuit to power the control sub-circuit; a boosting circuit of the voltage generating circuit boosts the first voltage generated by the power supply chip to obtain a second voltage; and applying the second voltage to a tank circuit in the single coil solenoid valve control circuit to power the tank circuit; when the control sub-circuit controls the single-coil electromagnetic valve in the single-coil electromagnetic valve control circuit to be conducted with the energy storage circuit, the energy storage circuit provides current, which is opposite to the valve sucking current of the single-coil electromagnetic valve in flow direction, to the single-coil electromagnetic valve, so that the single-coil electromagnetic valve is closed. Therefore, in this embodiment, a stable first voltage is provided to the control circuit in the single-coil solenoid valve control sub-circuit by the power chip, and the voltage value of the first voltage is lower, so that the current in the control sub-circuit is smaller, and the power consumption consumed by the control sub-circuit is lower; meanwhile, a second voltage generated after the first voltage is boosted by the boosting circuit is output to an energy storage circuit in the single-coil electromagnetic valve control circuit, and the voltage value of the second voltage is higher, so that the current provided by the energy storage circuit to the single-coil electromagnetic valve is larger, and the reliability of closing the single-coil electromagnetic valve is ensured.
The embodiment of the utility model provides a single coil solenoid valve control circuit is still provided, is applied to on the cooking utensils, for example gas-cooker etc. as shown in fig. 4, this single coil solenoid valve control circuit includes: a battery 41, a voltage generating circuit 42, a control sub-circuit 43 and an energy storage circuit 44; the voltage generation circuit 42 includes: a power supply chip 11 and a booster circuit 12; wherein,
the battery 41 is used for supplying power to the power chip 11;
the power chip 11 is configured to generate a constant first voltage after being powered by the battery 41; wherein the first voltage is applied to a control sub-circuit 43 of the single coil solenoid valve control circuit to power the control sub-circuit 43;
the boosting circuit 12 is configured to boost the first voltage to obtain a second voltage; wherein the second voltage is applied to the tank circuit 44 of the single coil solenoid valve control circuit to power the tank circuit 44;
the control sub-circuit 43 is configured to control connection or disconnection between a single-coil solenoid valve and the energy storage circuit 44 in the single-coil solenoid valve control circuit;
the energy storage circuit 44 is configured to provide a current, which is in a direction opposite to a valve sucking current of the single-coil solenoid valve, to the single-coil solenoid valve when the control sub-circuit 43 controls the single-coil solenoid valve to be conducted with the energy storage circuit 44, so that the single-coil solenoid valve is closed.
In practice, the control sub-circuit 43 may comprise a Microcontroller (MCU).
In practical applications, the tank circuit 44 may include a capacitor.
In one embodiment, as shown in fig. 5, the single coil solenoid valve control circuit further comprises: a switching circuit 45; wherein,
the control sub-circuit 43 is used for generating a control instruction;
the switching circuit 45 is configured to switch on the single-coil solenoid valve and the energy storage circuit 44 or switch off the connection between the single-coil solenoid valve and the energy storage circuit 44 in response to the control instruction.
In practical applications, the switching circuit 45 may include a MOS transistor.
Here, the boosting circuit 12 and the control principle have been described in detail above, and are not described in detail here.
The embodiment of the utility model provides a cooking utensils are still provided, including foretell single coil solenoid valve control circuit and cooking utensils body, single coil solenoid valve control circuit sets up at cooking utensils body internally.
Here, the single coil solenoid valve control circuit has been described in detail above and will not be described in detail here.
The present invention will be described in further detail with reference to the following application examples.
The embodiment of the application is a specific application example of the circuit shown in fig. 5.
In the present application embodiment, as shown in fig. 6, the single-coil solenoid valve control circuit includes: the device comprises a battery 41, a voltage generating circuit 42, a control sub-circuit 43, an energy storage circuit 44, a switching circuit 45, a single-coil solenoid valve 46, a thermocouple 47, a filter circuit 48, an inductor L1, a resistor R1, a resistor R2, a resistor R3 and a capacitor EC 9;
the voltage generation circuit 42 includes: a power supply chip 11 and a booster circuit 12;
the booster circuit 12 includes: a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5 and a diode D6;
the control sub-circuit 43 includes: MCU;
the tank circuit 44 includes: a capacitance EC 7; in practical applications, the capacitor EC7 may be an electrolytic capacitor, such as an aluminum electrolytic capacitor;
the switching circuit 45 includes: a MOS transistor Q1;
the filter circuit 48 includes: a capacitance EC 8;
the connection relationship of the circuit shown in fig. 6 is:
the positive electrode of the battery 41 is connected with the positive electrode of the capacitor EC8, the negative electrode of the battery 41 is connected with the negative electrode of the capacitor EC8, the negative electrode of the capacitor EC8 is grounded, the positive electrode of the battery 41 is also connected with the power supply end VCC end of the power supply chip 11, the ground end GND end of the power supply chip 11 is grounded, the switching end SW end of the power supply chip 11 is connected with the positive electrode of the battery 41 through the inductor L1, the output end Vo end of the power supply chip 11 is connected with the positive electrode of the capacitor EC9, and the negative electrode of the capacitor EC9 is;
one end of a capacitor C1 is connected with the anode of the diode D1, the other end of the capacitor C1 is connected with the switching end SW end of the power chip 11, the anode of the diode D1 is also connected with the cathode of the diode D2, the cathode of the diode D1 is connected with one end of a capacitor C2, and the other end of the capacitor C2 is connected with the anode of the diode D2 and the output end Vo end of the power chip 11;
one end of a capacitor C3 is connected with the anode of the diode D3, the other end of a capacitor C3 is connected with the anode of the diode D1, the anode of the diode D3 is also connected with the cathode of the diode D4, the cathode of the diode D3 is connected with one end of a capacitor C4, and the other end of the capacitor C4 is connected with the anode of the diode D4 and the cathode of the diode D1;
one end of a capacitor C5 is connected with the anode of the diode D5, the other end of a capacitor C5 is connected with the anode of the diode D3, the anode of the diode D5 is also connected with the cathode of the diode D6, the cathode of the diode D5 is connected with one end of a capacitor C6, and the other end of the capacitor C6 is connected with the anode of the diode D6 and the cathode of the diode D3;
one end of the resistor R1 is connected with the cathode of the diode D5, the other end of the resistor R1 is connected with the anode of the capacitor EC7, and the cathode of the capacitor EC7 is grounded;
the drain electrode of the MOS tube Q1 is connected with the anode of the capacitor EC7, the source electrode of the MOS tube Q1 is connected with one end of the single-coil solenoid valve 46 and the cathode of the thermocouple 47, the grid electrode of the MOS tube Q1 is connected with the MCU through a resistor R2, and the grid electrode of the MOS tube Q1 is connected with the source electrode of the MOS tube Q1 through a resistor R3;
the other end of the single-coil solenoid valve 46 is connected to the positive electrode of the thermocouple 47, and the other end of the single-coil solenoid valve 46 is grounded.
Here, the resistor R1, the resistor R2, and the resistor R3 are all current limiting resistors for reducing the current value in the circuit; the capacitor EC9 is a filter capacitor, and is used for performing filtering processing on the output voltage of the power supply chip 11; and the inductor L is used for performing a choke filtering function on the current in the circuit.
The operating principle of the circuit shown in fig. 6 is:
in the combustion process of the gas stove, the thermocouple 47 is heated to generate electromotive force, and a coil of the single-coil electromagnetic valve 46 connected with the thermocouple 47 in parallel generates current, so that the current enables the single-coil electromagnetic valve 46 to self-absorb to maintain the opening of the electromagnetic valve;
after the power supply chip 11 (i.e. the DC/DC power supply boost chip) is powered by the battery 41, a voltage of 3.3V is generated and output, and the boost circuit 12 boosts the voltage output by the power supply chip 11 to 12V, where 12V is a voltage value obtained by the boost circuit 12 after voltage doubling and rectification. The MCU is supplied with power by 3.3V output by the power chip 11, the capacitor EC7 is charged by 12V boosted by the booster circuit 12, and the energy is not consumed any more after the capacitor EC7 is charged to 12V. The resistor R1 functions as a charge limiter.
The MCU gives out pulse drive, a pin outputs a high-level signal, so that the MOS tube Q1 is conducted, the capacitor EC7 starts to discharge to the single-coil electromagnetic valve 46 to generate current opposite to the current of the suction valve so as to counteract the current of the suction valve generated by the thermocouple 47, so that the single-coil electromagnetic valve 46 has no electromagnetic attraction, the gas channel is reset and closed under the action of the spring, and the gas stove is shut down;
after the single-coil electromagnetic valve is closed, a level signal of the MCU control pin is pulled low, so that the MOS tube Q1 is disconnected, and the capacitor EC7 is recharged.
As can be seen from the above, the circuit in this embodiment raises the battery voltage to above 12V, charges the capacitor EC7, and utilizes the capacitor EC7 to store electric energy with a higher voltage to flow into the single coil solenoid valve 46 through the MOS transistor Q1, so as to counteract the valve sucking current flowing into the single coil solenoid valve 46 from the thermocouple 47, and in the combustion operation process of the gas stove, the single coil solenoid valve 46 is disconnected, so that the gas passage is closed, and the function of electrically controlling fire is realized.
In the embodiment, the Integrated Circuit (IC) chip (referred to herein as a power chip 11) and the voltage boost circuit 12 are used for supplying power to an MCU (also referred to as a "single chip microcomputer"), so that the MCU operates normally, and the voltage value of 3.3V for supplying power to the MCU is low, so that the current of the MCU internal circuit is low, and therefore the power consumption of the MCU is low, thereby reducing the power consumption of the MCU; the 12V is used to charge the capacitor EC7, so that the capacitor EC7 stores electricity, and the electricity stored by the capacitor EC7 flows into the single coil solenoid valve 46, so that the single coil solenoid valve 46 is closed, and because the 12V that supplies power to the capacitor EC7 has a higher voltage value, the electricity stored by the capacitor EC7 is more, so that the closing of the single coil solenoid valve 46 is more reliable.
Meanwhile, in the embodiment of the application, the 12V voltage is obtained by boosting on the basis of the 3.3V voltage, the MCU to which the 3.3V voltage is applied can normally operate, and the capacitor EC7 to which the 12V voltage is applied can also normally operate, so that the MCU and the capacitor EC7 can normally operate at the same time, and the situation that only one electronic component in the MCU and the capacitor EC7 normally operates can not occur, thereby ensuring the reliability of the circuit.
In addition, in the embodiment of the present application, the 12V voltage is obtained by boosting only the capacitor and the diode in the voltage boosting circuit 12 on the basis of the 3.3V voltage, and the circuit structure is simple and the cost is low.
In addition, in this application embodiment, after the electric quantity is stored by using the capacitor EC7, a large current is supplied to the single-coil solenoid valve 46, so that it is avoided that a battery directly supplies a large current to the single-coil solenoid valve 46, the battery load is reduced, and the battery service life is prolonged.
In addition, in actual use, when a circuit is designed, the capacitor EC7 is provided with the amount of electricity that the capacitor EC7 needs to store, and in this case, the larger the voltage applied to the capacitor, the smaller the capacitance value of the capacitor; the smaller the capacitance value is, the smaller the volume of the capacitor is, therefore, a larger voltage is applied to the capacitor, and the capacitor with a smaller capacitance value can be selected, i.e. the capacitor with a smaller volume can be selected, so that the size of an electric control board on the gas stove (i.e. a component on the gas stove integrating all electronic circuits) can be reduced.
Based on the above embodiment, the embodiment of the utility model provides a voltage generation method is still provided, is applied to on the cooking utensils, for example gas-cooker etc. as shown in fig. 7, this voltage generation method includes:
step 701: after a power supply chip of the voltage generation circuit is powered by a battery of the single-coil solenoid valve control circuit, a constant first voltage is generated; the first voltage is applied to a control sub-circuit in the single coil solenoid valve control circuit to power the control sub-circuit;
step 702: a boosting circuit of the voltage generating circuit boosts the first voltage generated by the power supply chip to obtain a second voltage; the second voltage is applied to a tank circuit in the single coil solenoid valve control circuit to power the tank circuit; wherein,
when the control sub-circuit controls the single-coil electromagnetic valve in the single-coil electromagnetic valve control circuit to be conducted with the energy storage circuit, the energy storage circuit provides current, which is opposite to the valve sucking current of the single-coil electromagnetic valve in flow direction, to the single-coil electromagnetic valve, so that the single-coil electromagnetic valve is closed.
In the voltage generation method provided by the embodiment of the utility model, the power chip of the voltage generation circuit is powered by the battery of the single-coil solenoid valve control circuit to generate a constant first voltage; and applying the first voltage to a control sub-circuit in the single coil solenoid valve control circuit to power the control sub-circuit; a boosting circuit of the voltage generating circuit boosts the first voltage generated by the power supply chip to obtain a second voltage; and applying the second voltage to a tank circuit in the single coil solenoid valve control circuit to power the tank circuit; when the control sub-circuit controls the single-coil electromagnetic valve in the single-coil electromagnetic valve control circuit to be conducted with the energy storage circuit, the energy storage circuit provides current, which is opposite to the valve sucking current of the single-coil electromagnetic valve in flow direction, to the single-coil electromagnetic valve, so that the single-coil electromagnetic valve is closed. According to the embodiment of the utility model, the power chip provides a stable first voltage for the control sub-circuit in the single coil solenoid valve control circuit, and the voltage value of the first voltage is lower, so that the current in the control sub-circuit is smaller, and the power consumption consumed by the control sub-circuit is lower; meanwhile, a second voltage generated after the first voltage is boosted by the boosting circuit is output to an energy storage circuit in the single-coil electromagnetic valve control circuit, and the voltage value of the second voltage is higher, so that the current provided by the energy storage circuit to the single-coil electromagnetic valve is larger, and the reliability of closing the single-coil electromagnetic valve is ensured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A voltage generation circuit, comprising:
the power supply chip is used for generating constant first voltage after being powered by a battery of the single-coil electromagnetic valve control circuit;
the boost circuit is used for boosting the first voltage to obtain a second voltage; wherein,
the first voltage is applied to a control sub-circuit of the single coil solenoid valve control circuit to power the control sub-circuit, and the second voltage is applied to a tank circuit of the single coil solenoid valve control circuit to power the tank circuit; when the control sub-circuit controls the single-coil solenoid valve of the single-coil solenoid valve control circuit to be conducted with the energy storage circuit, the energy storage circuit provides current, which is opposite to the valve sucking current of the single-coil solenoid valve in flow direction, to the single-coil solenoid valve, so that the single-coil solenoid valve is closed.
2. The voltage generation circuit of claim 1, wherein the boost circuit comprises:
the N boosting sub-circuits are sequentially connected in series and used for boosting the first voltage by N times;
wherein N is an integer greater than or equal to 1.
3. The voltage generation circuit of claim 2, wherein the boost sub-circuit comprises: the circuit comprises a first capacitor, a second capacitor, a first diode and a second diode; wherein,
one end of the first capacitor is connected with the anode of the first diode, the other end of the first capacitor is connected with the cathode of the input voltage of the boost sub-circuit, the anode of the first diode is further connected with the cathode of the second diode, the cathode of the first diode is connected with one end of the second capacitor, and the other end of the second capacitor is connected with the anode of the second diode and the anode of the input voltage.
4. The voltage generation circuit according to any one of claims 1 to 3, further comprising:
and the filter circuit is used for filtering the voltage provided by the battery.
5. A single coil solenoid valve control circuit, comprising: the device comprises a battery, a voltage generating circuit, a control sub-circuit and an energy storage circuit; the voltage generation circuit includes: a power supply chip and a booster circuit; wherein,
the battery is used for supplying power to the power supply chip;
the power supply chip is used for generating a constant first voltage after being powered by the battery; wherein the first voltage is applied to a control sub-circuit of the single coil solenoid valve control circuit to power the control sub-circuit;
the boost circuit is used for boosting the first voltage to obtain a second voltage; wherein the second voltage is applied across a tank circuit of the single coil solenoid valve control circuit to power the tank circuit;
the control sub-circuit is used for controlling the connection or disconnection of the single-coil electromagnetic valve and the energy storage circuit in the single-coil electromagnetic valve control circuit;
the energy storage circuit is used for providing current with a flow direction opposite to that of the valve sucking current of the single-coil electromagnetic valve to the single-coil electromagnetic valve when the control sub-circuit controls the single-coil electromagnetic valve to be conducted with the energy storage circuit, so that the single-coil electromagnetic valve is closed.
6. The single coil solenoid valve control circuit of claim 5, further comprising: a switching circuit; wherein,
the control sub-circuit is used for generating a control instruction;
the switching circuit is configured to switch on the single-coil solenoid valve and the energy storage circuit or switch off the connection between the single-coil solenoid valve and the energy storage circuit in response to the control instruction.
7. The single coil solenoid valve control circuit of claim 5, wherein said boost circuit comprises:
the N boosting sub-circuits are sequentially connected in series and used for boosting the first voltage by N times;
wherein N is an integer greater than or equal to 1.
8. The single coil solenoid valve control circuit of claim 7, wherein said boost sub-circuit comprises: the circuit comprises a first capacitor, a second capacitor, a first diode and a second diode; wherein,
one end of the first capacitor is connected with the anode of the first diode, the other end of the first capacitor is connected with the cathode of the input voltage of the boost sub-circuit, the anode of the first diode is further connected with the cathode of the second diode, the cathode of the first diode is connected with one end of the second capacitor, and the other end of the second capacitor is connected with the anode of the second diode and the anode of the input voltage.
9. The single coil solenoid valve control circuit of claim 5, wherein said voltage generation circuit further comprises:
and the filter circuit is used for filtering the voltage provided by the battery.
10. A hob comprising the single coil solenoid valve control circuit of any one of claims 5 to 9 and a hob body, said single coil solenoid valve control circuit being provided at the hob body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021372158.9U CN212785171U (en) | 2020-07-13 | 2020-07-13 | Voltage generating circuit, single-coil electromagnetic valve control circuit and cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021372158.9U CN212785171U (en) | 2020-07-13 | 2020-07-13 | Voltage generating circuit, single-coil electromagnetic valve control circuit and cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212785171U true CN212785171U (en) | 2021-03-23 |
Family
ID=75078725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021372158.9U Active CN212785171U (en) | 2020-07-13 | 2020-07-13 | Voltage generating circuit, single-coil electromagnetic valve control circuit and cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212785171U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113922439A (en) * | 2021-08-27 | 2022-01-11 | 华帝股份有限公司 | Control circuit and control method of self-priming electromagnetic valve |
| WO2024012375A1 (en) * | 2022-07-13 | 2024-01-18 | 无锡华润上华科技有限公司 | Mtp memory power supply system and power supply method |
-
2020
- 2020-07-13 CN CN202021372158.9U patent/CN212785171U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113922439A (en) * | 2021-08-27 | 2022-01-11 | 华帝股份有限公司 | Control circuit and control method of self-priming electromagnetic valve |
| WO2024012375A1 (en) * | 2022-07-13 | 2024-01-18 | 无锡华润上华科技有限公司 | Mtp memory power supply system and power supply method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101630901B (en) | Switching regulator with boosted auxiliary winding supply | |
| CN212785171U (en) | Voltage generating circuit, single-coil electromagnetic valve control circuit and cooker | |
| CN109088544A (en) | Switching power unit | |
| JP6132921B2 (en) | Flyback converter that can operate with extremely low input voltage | |
| CN106452040B (en) | Start-up circuit | |
| CN104219840A (en) | LED switch color temperature regulation controller and LED drive circuit | |
| CN111800003A (en) | Voltage generation circuit and method, single-coil electromagnetic valve control circuit and cooker | |
| CN102668347B (en) | Start power supply | |
| US20130127523A1 (en) | Device and method for providing power to a microcontroller | |
| CN217063575U (en) | Uninterrupted multi-output direct-current power supply | |
| CN204090236U (en) | LED switch color-temperature regulating controller and LED drive circuit | |
| CN101373930B (en) | DC voltage converting circuit | |
| US6396724B1 (en) | Charge-pumped DC bias supply | |
| CN111030481B (en) | Constant-voltage constant-current flyback AC-DC converter without auxiliary winding and control circuit thereof | |
| CN214623348U (en) | Control circuit and electronic equipment | |
| CN104747331A (en) | Boost circuit of diesel engine electrical control oil injector | |
| CN113074272B (en) | Control circuit and control method of gas valve | |
| CN207853533U (en) | A kind of power supply circuit | |
| CN110289756A (en) | A kind of electric appliance and its standby power | |
| WO2022242037A1 (en) | Power supply circuit, power supply system and smart door lock | |
| CN109390991B (en) | Control circuit and control method for power supply of gas valve battery | |
| Park et al. | Cost-effective power system with an electronic double layer capacitor for reducing the standby power consumption of consumer electronic devices | |
| CN112054677A (en) | Novel switching power supply and implementation method thereof | |
| CN113922439B (en) | Control circuit and control method of self-priming electromagnetic valve | |
| CN207926461U (en) | A kind of AC-DC isolated variable circuits for soft of bus capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230613 Address after: 241012 west side of floor 3, office building 5, new energy and new materials cluster, Fuzhou Road, Jiangbei concentration area, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: No.20 Gangqian Road, industrial park, Beijiao Town, Shunde District, Foshan City, Guangdong Province Patentee before: FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING Co.,Ltd. |