CN213585613U - Direct-current brushless motor driving device for nanometer microbubble water heater - Google Patents
Direct-current brushless motor driving device for nanometer microbubble water heater Download PDFInfo
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- CN213585613U CN213585613U CN202022993385.XU CN202022993385U CN213585613U CN 213585613 U CN213585613 U CN 213585613U CN 202022993385 U CN202022993385 U CN 202022993385U CN 213585613 U CN213585613 U CN 213585613U
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Abstract
The utility model discloses a DC brushless motor driving device for a nanometer microbubble water heater, which comprises a single chip microcomputer chip, a motor driving module, an AC power supply, a first relay, a second relay, an HV rectification module and a switch power supply; the single chip microcomputer chip is connected with the main control substrate through a pair of serial port communication modules matched with each other to realize communication; the singlechip chip is connected with a Hall sensor of the direct current brushless motor through an optical isolation module; the motor driving module is respectively connected with the single chip microcomputer chip and the direct current brushless motor and drives the direct current brushless motor according to an instruction sent by the single chip microcomputer chip; the first relay and the second relay are connected with the single chip microcomputer chip; diodes are respectively arranged between the switching power supply and the AC power supply and between the switching power supply and the HVcc, and forward currents are respectively obtained from the AC power supply or the HVcc according to the voltage output condition of the AC power supply. The utility model discloses satisfy the requirement of the little bubble water generating device of nanometer, realize the combination of little bubble water generating device and water heater.
Description
Technical Field
The utility model relates to a nanometer microbubble water heater makes technical field, in particular to a brushless direct current motor drive arrangement for nanometer microbubble water heater.
Background
The water heater is a common daily water heating device, water can be used for bathing or cleaning articles after being heated, but most of the existing water heaters only perform the function of heating the water, and the function is single.
The nanometer micro-bubble water is also called micro-bubble water or small-bubble water, and because the characteristics of the nanometer micro-bubble water can sterilize, deeply clean and the like, the cleaning effect is superior to that of common water and cleaning products, so the nanometer micro-bubble water is widely applied to various occasions for cleaning by using water.
Therefore, the nanometer micro-bubble water is applied to daily cleaning and is combined with a water heater to become a new trend in the field.
The existing nanometer micro-bubble water generating device mainly has two types, one type is that air is pressed into a water body through an air pump, and high pressure is generated at the local part of the water body by utilizing the characteristic that water can not be compressed, so that a large amount of air is dissolved into the water body to form nanometer micro-bubble water; the second is to suck air through the flow of the water body, and to disperse and dissolve the larger air bubbles in the water body into the water body through a special micro-bubble water outlet device to form nano micro-bubble water.
However, in practical applications, the first generation device needs a powerful air pump to pressurize air into the water body, so the volume of the equipment is large, and the power consumption and noise are very high during operation.
The second method has very strict requirements on water pressure and higher production cost.
Therefore, how to satisfy the power requirement of the nano-micro bubble water generating device becomes a technical problem which needs to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects of the prior art, the utility model provides a brushless DC motor drive arrangement for nanometer microbubble water heater, the purpose of realization is that the power requirement of satisfying nanometer microbubble water generating device.
In order to achieve the above object, the present invention discloses a dc brushless motor driving device for a nano-microbubble water heater, which is respectively connected to a main control substrate of the nano-microbubble water heater, and a dc brushless motor driving a water pump of a nano-microbubble water generator; the power supply circuit comprises a single chip microcomputer chip, a motor driving module and a power supply loop, wherein the power supply loop comprises an AC power supply, a first relay, a second relay, an HV rectification module and a switching power supply; the AC power supply outputs HVcc through the HV rectification module to supply power to the motor driving module and the switching power supply.
The single chip microcomputer chip is connected with the main control substrate through a pair of serial port communication modules matched with each other to realize communication;
the singlechip chip is connected with a Hall sensor of the DC brushless motor through an optical isolation module;
the motor driving module is respectively connected with the single chip microcomputer chip and the direct current brushless motor and drives the direct current brushless motor according to an instruction sent by the single chip microcomputer chip;
the first relay and the second relay are both connected with the single chip microcomputer chip and work according to the instruction of the single chip microcomputer chip;
and a first diode and a second diode are respectively arranged between the switching power supply and the AC power supply and between the switching power supply and the HVcc, forward current is respectively obtained from the AC power supply or the HVcc according to the voltage output condition of the AC power supply, and a 3.3V direct current power supply is output to the single chip microcomputer chip and the motor driving module.
Preferably, the pair of serial communication modules matched with each other are negative theoretical serial communication modules.
Preferably, the motor driving module is provided with a temperature detection module.
Preferably, the motor driving module is an SD15G60FA intelligent power module.
Preferably, the main control substrate further includes a feedback loop of a three-way valve in the nano microbubble water heater, and a driving loop of the air solenoid valve.
The utility model has the advantages that:
the utility model discloses an application can satisfy nanometer microbubble water generating device's power requirement, realizes the combination of nanometer microbubble water generating device and water heater.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 shows a schematic structural diagram of an embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 1, the dc brushless motor driving apparatus for a nano-micro-bubble water heater is respectively connected to a main control substrate of the nano-micro-bubble water heater and a dc brushless motor for driving a water pump of a nano-micro-bubble water generator; the system comprises a single chip microcomputer chip (namely MCU), a motor driving module and a power supply loop comprising an AC power supply, a first relay, a second relay, an HV rectification module and a switching power supply; the AC power supply outputs HVcc through the HV rectification module to supply power to the motor driving module and the switching power supply.
The singlechip chip is connected with the main control substrate through a pair of serial port communication modules matched with each other to realize communication;
the singlechip chip is connected with a Hall sensor of the direct current brushless motor through an optical isolation module;
the motor driving module is respectively connected with the single chip microcomputer chip and the direct current brushless motor and drives the direct current brushless motor according to an instruction sent by the single chip microcomputer chip;
the first relay and the second relay are both connected with the single chip microcomputer chip and work according to the instruction of the single chip microcomputer chip;
a first diode and a second diode are respectively arranged between the switching power supply and the AC power supply and between the switching power supply and the HVcc, forward current is respectively obtained from the AC power supply or the HVcc according to the voltage output condition of the AC power supply, and 3.3V direct current power supply is output to the single chip microcomputer chip and the motor driving module.
In some embodiments, the pair of serial communication modules matched with each other are negative theoretical serial communication modules.
In certain embodiments, the motor drive module is provided with a temperature detection module.
In certain embodiments, the motor drive module is an SD15G60FA smart power module.
In some embodiments, the main control substrate further includes a feedback loop of a three-way valve in the nano microbubble water heater, and a driving loop of the air solenoid valve.
In practical application, because safety, durability and energy consumption need to be considered, when the direct current brushless motor is in a standby mode, a half-wave rectification mode is adopted, the requirement on the capacity of a driving capacitor is not high, and the price is greatly influenced by the capacity value of the capacitor with high withstand voltage.
Therefore, the capacitor can be selected to be a cheaper specification of 33uF/450V, and only one cheap first diode is added at the moment, so that the low-power-consumption operation of the circuit during standby can be met, and the cost can be reduced.
When the motor driver operates in a mode, after a starting signal of the motor is received, the second relay is started, the first relay is not started temporarily, at the moment, current can be limited by the PTC1 element to slow down impact on the buffer rectifier bridge and the E4 capacitor, and the water heater can pass an EMC electrical test. After the circuit stabilizes (about 100 ms), first relay is opened, shielding PTC1 this moment, guarantees high-power output, and DC310V after full-bridge rectification this moment is except for supplying power for motor drive module, still flows back to switching power supply input side through first diode for switching power supply is more stable this moment, and output driving ability is stronger. Because the rectifying capacitor E4 of the HV rectifying module has large leakage current, the second relay is switched off in order to ensure low power consumption of the driver during standby, so that the rectifying capacitor E4 does not have the phenomenon of continuous charging and discharging.
The motor driving module adopts an SD15G60FA Intelligent Power Module (IPM), which is a highly integrated and highly reliable 3-phase brushless direct current motor driving circuit and is mainly used for variable frequency driving with lower power. 3-phase full-bridge high-voltage gate drive circuits and 6 low-loss IGBT tubes are built in the high-voltage gate drive circuit.
The SD15G60FA Intelligent Power Module (IPM) integrates various protection functions such as undervoltage, short circuit and the like and temperature output, provides excellent protection and wide safe working range, and can respectively and independently detect the current because each phase has an independent direct current end.
The high insulation and easy heat conduction design adopted by the SD15G60FA Intelligent Power Module (IPM) provides a very compact package body, is very convenient to use and is particularly suitable for occasions requiring compactness.
Because the power can not meet the design requirement when the motor is driven by the positive sine wave mode, the sampling current is designed to feed back the output power.
The singlechip chip is connected with a Hall sensor of the direct current brushless motor through the optical isolation module, so that circuit isolation of the driving substrate and the main substrate is realized, and mutual interference is reduced.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. The direct-current brushless motor driving device is used for the nanometer microbubble water heater, and is respectively connected with a main control substrate of the nanometer microbubble water heater and a direct-current brushless motor for driving a water pump of the nanometer microbubble water generator; the power supply circuit comprises a single chip microcomputer chip, a motor driving module and a power supply loop, wherein the power supply loop comprises an AC power supply, a first relay, a second relay, an HV rectification module and a switching power supply; the AC power supply outputs HVcc through the HV rectification module to supply power to the motor driving module and the switching power supply; the method is characterized in that:
the single chip microcomputer chip is connected with the main control substrate through a pair of serial port communication modules matched with each other to realize communication;
the singlechip chip is connected with a Hall sensor of the DC brushless motor through an optical isolation module;
the motor driving module is respectively connected with the single chip microcomputer chip and the direct current brushless motor and drives the direct current brushless motor according to an instruction sent by the single chip microcomputer chip;
the first relay and the second relay are both connected with the single chip microcomputer chip and work according to the instruction of the single chip microcomputer chip;
and a first diode and a second diode are respectively arranged between the switching power supply and the AC power supply and between the switching power supply and the HVcc, forward current is respectively obtained from the AC power supply or the HVcc according to the voltage output condition of the AC power supply, and a 3.3V direct current power supply is output to the single chip microcomputer chip and the motor driving module.
2. The dc brushless motor driving apparatus for a microbubble nano-water heater as defined in claim 1, wherein a pair of the serial communication modules matched with each other is a negative-theory serial communication module.
3. The dc brushless motor driving apparatus for a microbubble nano-water heater as recited in claim 1, wherein the motor driving module is provided with a temperature detection module.
4. The dc brushless motor driving apparatus for a microbubble nano-water heater as recited in claim 1, wherein the motor driving module is an SD15G60FA smart power module.
5. The dc brushless motor driving apparatus for a microbubble nano-water heater as recited in claim 1, wherein the main control substrate further comprises a feedback loop of a three-way valve in the microbubble nano-water heater, and a driving loop of an air solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022993385.XU CN213585613U (en) | 2020-12-14 | 2020-12-14 | Direct-current brushless motor driving device for nanometer microbubble water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022993385.XU CN213585613U (en) | 2020-12-14 | 2020-12-14 | Direct-current brushless motor driving device for nanometer microbubble water heater |
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| Publication Number | Publication Date |
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| CN213585613U true CN213585613U (en) | 2021-06-29 |
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| CN202022993385.XU Active CN213585613U (en) | 2020-12-14 | 2020-12-14 | Direct-current brushless motor driving device for nanometer microbubble water heater |
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| CN (1) | CN213585613U (en) |
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2020
- 2020-12-14 CN CN202022993385.XU patent/CN213585613U/en active Active
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