An atomizing circuit board

Abstract

The utility model discloses an atomization circuit board, include: hardware heat dissipation board, set up the atomization piece on hardware heat dissipation board and with atomization piece electric connection's circuit board, the middle part of hardware heat dissipation board is equipped with the shielding storehouse for accommodating atomization piece and circuit board in proper order, the bottom of shielding storehouse is equipped with the through -hole, the integrated on circuit board is: atomization communication and power interface circuit, atomization control circuit, atomization circuit, power supply circuit, current detection circuit, water shortage detection circuit, atomization control circuit corresponding end respectively with atomization communication and power interface circuit, atomization circuit, power supply circuit, current detection circuit, water shortage detection circuit corresponding end electric connection.

Description

Technical Field

[0001] This utility model relates to the field of atomization technology, and in particular to an atomization circuit board. Background Technology

[0002] In existing technologies, atomizing devices (such as humidifiers and medical nebulizers) are widely used in home, medical, and industrial fields. Their core component, the circuit board, drives an atomizing plate through high-frequency vibration to generate fine mist, thus achieving liquid atomization. However, with the increasing integration and high frequency of electronic devices, circuit boards generate significant electromagnetic radiation (EMI) during operation. This not only leads to instability in the device's own performance but may also interfere with surrounding electronic devices, such as communication modules, navigation systems, or medical instruments, causing signal distortion, malfunctions, and even safety hazards. For example, during high-pressure or ultrasonic atomization, the radiated and conducted emissions from the circuit board often exceed electromagnetic compatibility (EMC) standards, resulting in excessive terminal interference voltage. Furthermore, existing circuit boards typically lack effective electromagnetic shielding mechanisms, have poor heat dissipation performance, and are prone to overheating, overcurrent, or dry burning due to lack of water, further reducing the reliability and lifespan of the device. Simultaneously, the integration of shielding materials with the circuit board in traditional designs is low, resulting in complex installation and difficulty meeting the miniaturization, intelligence, and environmental protection requirements of modern devices. These problems have become bottlenecks restricting the development of atomization technology, necessitating a solution that integrates shielding, control, and protection functions. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model provides an atomizing circuit board.

[0004] To achieve the above objectives, this utility model provides an atomizing circuit board, characterized in that it includes: a metal heat sink, an atomizing sheet disposed on the metal heat sink, and a circuit board electrically connected to the atomizing sheet. The metal heat sink is provided with a shielding chamber in the middle for sequentially accommodating the atomizing sheet and the circuit board, and the bottom of the shielding chamber is provided with a through hole. The circuit board integrates: atomization communication and power interface circuit, atomization control circuit, atomization circuit, power supply circuit, current detection circuit, and water shortage detection circuit; The corresponding terminals of the atomization control circuit are electrically connected to the corresponding terminals of the atomization communication and power interface circuit, the atomization circuit, the power supply circuit, the current detection circuit, and the water shortage detection circuit, respectively.

[0005] Preferably, the atomization control circuit includes an MCU, and the MCU is model CMS89F513.

[0006] Preferably, the atomizing circuit includes an atomizing plate interface FOG, resistors R26, R29, R30, and R32, capacitors C15, C17, C18, and C22, a ferrite bead L1, an inductor L2, and a MOSFET Q4; One corresponding terminal of the atomizing plate interface FOG is electrically connected to the first terminal of the ferrite bead L1 via capacitor C22 and capacitor C18. The second terminal of the ferrite bead L1 is electrically connected to the first terminal of capacitor C17, the first terminal of inductor L2, and the drain of MOSFET Q4. The second terminal of capacitor C17 is grounded via resistor R29. The second terminal of inductor L2 is grounded via capacitor C15. The gate of MOSFET Q4 is electrically connected to the first terminals of resistors R26 and R30. The source of MOSFET Q4 is electrically connected to the first terminal of resistor R32. The second terminal of resistor R32 is grounded. The second terminal of resistor R30 is grounded. The second terminal of resistor R26 is electrically connected to the corresponding terminal of the MCU.

[0007] Preferably, the current detection circuit includes resistors R2, R3, and R6, capacitors C5, C6, and C16, and diode D1; the first end of resistor R2 is electrically connected to the first end of capacitor C5, the first end of diode D1, and the corresponding end of the MCU; the second end of capacitor C5 is grounded; the second end of diode D1 is electrically connected to the first ends of resistors R3, R6, and C16; the second end of resistor R3 is electrically connected to the logic power supply VDD; the second end of resistor R6 is electrically connected to the first end of capacitor C6 and the corresponding end of the MCU; the second end of capacitor C6 is electrically connected to the second end of capacitor C16 and grounded.

[0008] Preferably, the water shortage detection circuit includes a connector JC and a current-limiting resistor R10; the connector JC is used to connect an external water shortage detection switch, one end of the connector JC is electrically connected to the corresponding terminal of the MCU via the current-limiting resistor R10, and the other end is electrically connected to the logic power supply VDD terminal.

[0009] Preferably, the metal heat sink plate is further provided with grooves and fixing screw holes around its perimeter.

[0010] Preferably, the material of the metal heat sink is aluminum alloy, which facilitates heat dissipation and electromagnetic radiation shielding.

[0011] Preferably, the atomizing plate is a ceramic atomizing plate.

[0012] The technical solution of this utility model has the following beneficial effects: Firstly, this invention utilizes an aluminum alloy heat sink design to create a shielding chamber, effectively suppressing electromagnetic radiation, optimizing electromagnetic compatibility (EMC), reducing interference with surrounding equipment, and improving overall system stability. Secondly, it integrates an atomization control circuit, a current detection circuit, and a water shortage detection circuit, enabling real-time monitoring of abnormal current and insufficient water level, implementing overcurrent protection and automatic shutdown to prevent dry burning and damage to the atomizing element, thus enhancing equipment safety and lifespan. This invention features a simple structure, low cost, and significant shielding effect, offering excellent electromagnetic shielding and socio-economic benefits, and can be widely applied in fields such as household humidifiers and medical atomization equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ; Figure 2 for Figure 1 Rear view of the structure; Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 4 for Figure 3 Rear view of the structure; Figure 5 This is a schematic diagram of the installation of the circuit board of this utility model; Figure 6 This is a schematic diagram of the control circuit of this utility model; Figure 7 This is a circuit diagram of the atomization control circuit of this utility model; Figure 8 This is a circuit diagram of the atomizing circuit of this utility model; Figure 9 This is a circuit diagram of the current detection circuit of this utility model; Figure 10 This is a circuit diagram of the water shortage detection circuit of this utility model; Figure 11 This is a circuit diagram of the atomizing communication and power interface circuit of this utility model; Detailed Implementation The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] Reference Figures 1 to 11 This utility model provides an atomizing circuit board, characterized in that it includes: a metal heat sink 1, an atomizing sheet (not shown) disposed on the metal heat sink 1, and a circuit board 2 electrically connected to the atomizing sheet; The metal heat sink 1 has a shielding chamber 101 in the middle for sequentially accommodating the atomizing sheet and the circuit board 2. The bottom of the shielding chamber 101 has a through hole to facilitate the passage of gas and liquid. The circuit board 2 integrates: atomization communication and power interface circuit 50, atomization control circuit 10, atomization circuit 20, power supply circuit 60, current detection circuit 30, and water shortage detection circuit 40. The corresponding terminals of the atomization control circuit 10 are electrically connected to the corresponding terminals of the atomization communication and power interface circuit 50, the atomization circuit 20, the power supply circuit 60, the current detection circuit 30, and the water shortage detection circuit 40, respectively.

[0015] Furthermore, the atomization control circuit 10 includes an MCU, specifically a CMS89F513, which outputs a PWM control signal to drive the power MOSFET of the atomization circuit to achieve atomization power adjustment; reads the current detection signal (AD_I) to perform current limiting, overcurrent / locked rotor detection; reads the water shortage detection signal to execute protection shutdown in the event of water shortage or abnormal conditions; and interacts with the host computer / main control board to exchange working status or receive control commands through a communication interface.

[0016] Furthermore, the atomizing circuit 20 includes an atomizing plate interface FOG, resistors R26, R29, R30, and R32, capacitors C15, C17, C18, and C22, a ferrite bead L1, an inductor L2, and a MOSFET Q4; One corresponding terminal of the atomizing plate interface FOG is electrically connected to the first terminal of the ferrite bead L1 via capacitor C22 and capacitor C18. The second terminal of the ferrite bead L1 is electrically connected to the first terminal of capacitor C17, the first terminal of inductor L2, and the drain of MOSFET Q4. The second terminal of capacitor C17 is grounded via resistor R29. The second terminal of inductor L2 is grounded via capacitor C15. The gate of MOSFET Q4 is electrically connected to the first terminals of resistors R26 and R30. The source of MOSFET Q4 is electrically connected to the first terminal of resistor R32. The second terminal of resistor R32 is grounded. The second terminal of resistor R30 is grounded. The second terminal of resistor R26 is electrically connected to the corresponding terminal of the MCU.

[0017] Furthermore, the current detection circuit 30 includes resistors R2, R3, and R6, capacitors C5, C6, and C16, and diode D1. The first end of resistor R2 is electrically connected to the first end of capacitor C5, the first end of diode D1, and the corresponding end of the MCU. The second end of capacitor C5 is grounded. The second end of diode D1 is electrically connected to the first ends of resistors R3, R6, and C16. The second end of resistor R3 is electrically connected to the logic power supply VDD. The second end of resistor R6 is electrically connected to the first end of capacitor C6 and the corresponding end of the MCU. The second end of capacitor C6 is electrically connected to the second end of capacitor C16 and grounded. The circuit monitors the current in the atomization circuit and feeds it back to the MCU to achieve current limiting or shutdown protection.

[0018] Furthermore, the water shortage detection circuit 40 includes a connector JC and a current-limiting resistor R10. The connector JC is used to connect an external water shortage detection switch. One end of the connector JC is electrically connected to the corresponding terminal of the MCU via the current-limiting resistor R10, and the other end is electrically connected to the logic power supply VDD terminal. The water shortage detection circuit is used to detect whether there is a water shortage. When there is a water shortage, it detects whether the water level is insufficient through an external switch. When there is a water shortage, it pulls down the signal to feed back to the MCU, triggering a protection shutdown. This is used to prevent dry burning and damage to the atomizing plate, improving equipment safety and lifespan.

[0019] Furthermore, the metal heat sink 1 is provided with grooves 103 and fixing screw holes 102 around its perimeter, and the design of the fixing screw holes 102 facilitates installation and fixing. The metal heat sink 1 is made of aluminum alloy, which facilitates heat dissipation and electromagnetic radiation shielding. The atomizing plate is a ceramic atomizing plate.

[0020] This invention utilizes an aluminum alloy heat dissipation plate to design a shielding chamber, effectively suppressing electromagnetic radiation, optimizing electromagnetic compatibility (EMC), reducing interference with surrounding equipment, and improving overall system stability. Secondly, it integrates atomization control circuit, current detection circuit, and water shortage detection circuit, enabling real-time monitoring of abnormal current and insufficient water level, implementing overcurrent protection and automatic shutdown to prevent dry burning and damage to the atomizing element, thus enhancing equipment safety and lifespan. This invention features a simple structure, low cost, and significant shielding effect, offering excellent electromagnetic shielding and socio-economic benefits, and can be widely applied in household humidifiers, medical atomization equipment, and other fields.

[0021] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An atomizing circuit board, characterized by, include: A metal heat sink, an atomizing sheet mounted on the metal heat sink, and a circuit board electrically connected to the atomizing sheet; The metal heat sink is provided with a shielding chamber in the middle for sequentially accommodating the atomizing sheet and the circuit board, and the bottom of the shielding chamber is provided with a through hole. The circuit board integrates: atomization communication and power interface circuit, atomization control circuit, atomization circuit, power supply circuit, current detection circuit, and water shortage detection circuit; The corresponding terminals of the atomization control circuit are electrically connected to the corresponding terminals of the atomization communication and power interface circuit, the atomization circuit, the power supply circuit, the current detection circuit, and the water shortage detection circuit, respectively.

2. The atomizing circuit board according to claim 1, wherein The atomization control circuit includes an MCU.

3. The atomizing circuit board according to claim 2, wherein The atomizing circuit includes an atomizing plate interface FOG, resistors R26, R29, R30, and R32, capacitors C15, C17, C18, and C22, a ferrite bead L1, an inductor L2, and a MOSFET Q4; One corresponding terminal of the atomizing plate interface FOG is electrically connected to the first terminal of the ferrite bead L1 via capacitor C22 and capacitor C18. The second terminal of the ferrite bead L1 is electrically connected to the first terminal of capacitor C17, the first terminal of inductor L2, and the drain of MOSFET Q4. The second terminal of capacitor C17 is grounded via resistor R29. The second terminal of inductor L2 is grounded via capacitor C15. The gate of MOSFET Q4 is electrically connected to the first terminals of resistors R26 and R30. The source of MOSFET Q4 is electrically connected to the first terminal of resistor R32. The second terminal of resistor R32 is grounded. The second terminal of resistor R30 is grounded. The second terminal of resistor R26 is electrically connected to the corresponding terminal of the MCU.

4. The atomizing circuit board according to claim 3, wherein The current detection circuit includes resistors R2, R3, and R6, capacitors C5, C6, and C16, and diode D1. The first end of resistor R2 is electrically connected to the first end of capacitor C5, the first end of diode D1, and the corresponding end of the MCU. The second end of capacitor C5 is grounded. The second end of diode D1 is electrically connected to the first ends of resistors R3, R6, and C16. The second end of resistor R3 is electrically connected to the logic power supply VDD. The second end of resistor R6 is electrically connected to the first end of capacitor C6 and the corresponding end of the MCU. The second end of capacitor C6 is electrically connected to the second end of capacitor C16 and grounded.

5. The atomizing circuit board according to claim 4, wherein The water shortage detection circuit includes a connector JC and a current-limiting resistor R10. The connector JC is used to connect an external water shortage detection switch. One end of the connector JC is electrically connected to the corresponding terminal of the MCU via the current-limiting resistor R10, and the other end is electrically connected to the logic power supply VDD terminal.

6. The atomizing circuit board according to claim 1, wherein The metal heat sink plate is also provided with grooves and fixing screw holes around its perimeter.

7. The atomizing circuit board according to claim 6, wherein The metal heat sink is made of aluminum alloy, which facilitates heat dissipation and electromagnetic radiation shielding.

8. The atomizing circuit board according to claim 1, wherein The atomizing plate is a ceramic atomizing plate.

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