Dish washing machine with intelligent sensing module
By integrating intelligent sensing modules and multiple sensors in the dishwasher, automatic detection of high-temperature overflow and human body proximity and door panel closure are achieved, which solves the problem that existing dishwashers cannot automatically close door panels when high-temperature overflow, improving safety and convenience.
Patent Information
- Application Number
- CN202421625342.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-10
AI Technical Summary
Existing dishwashers cannot automatically close the door panel when the high temperature overflows, resulting in a possible risk of scalding.
A dishwasher with intelligent sensing module was designed, using a motor-driven lock rod and a variety of sensors (temperature sensor, light brightness sensor, distance measuring sensor) combined with the main control chip and driving circuit to realize the detection of high temperature overflow and human body proximity, and automatically close the door panel.
It effectively avoids the risk of scalding of high-temperature gases, and also has anti-pinching function, improving the safety and convenience of the dishwasher.
Smart Images
Figure CN222853809U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a dishwasher used in a kitchen, in particular to a dishwasher which can automatically close a door panel to avoid scalding when high-temperature overflows and someone approaches. Background Art
[0002] After the dishwasher is used, the internal temperature will be relatively high. When the door is opened, steam will overflow and people nearby may be easily scalded.
[0003] The patent office disclosed on April 26, 2024, a dishwasher high-temperature self-locking system and control method with application number 2024101107584, including a dishwasher body and a door body, the door body is hinged to the dishwasher body, and the door body can rotate between the open position and the closed position; it also includes a control module, a temperature detection module and an electromagnetic lock, the electromagnetic lock is installed on the dishwasher body, the electromagnetic lock can switch between the relaxed state and the locked state, and in the locked state, the door body can be locked in the closed position; the temperature detection module is arranged in the dishwasher body, and can detect the temperature in the dishwasher body; the electromagnetic lock and the temperature detection module are coupled to the control module, and the control module can control the electromagnetic lock to switch to the locked state when the temperature in the dishwasher body exceeds the preset temperature. After the temperature of this dishwasher exceeds the preset temperature, it has been in a locked state, and the temperature in the dishwasher cannot be quickly reduced, and it takes a long time to wait, which is very troublesome. Summary of the invention
[0004] The utility model aims to address the defects and shortcomings of the prior art and to provide a dishwasher which can automatically close the door panel when high-temperature overflow occurs to avoid scalding if someone approaches.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: the dishwasher with an intelligent sensing module comprises a dishwasher, a locking rod driven by a motor is installed above the dishwasher, the bottom of the door panel of the dishwasher is hinged with the door frame of the dishwasher, a locking groove is opened at the upper end of the door panel, and after the locking rod is inserted into the locking groove and buckled, the locking rod can drive the door panel to open and close; a temperature sensor and a light brightness sensor are arranged on the inner side of the door panel of the dishwasher or on the upper side of the door frame, a distance sensor is arranged on the outer side of the door panel, a circuit board is arranged in the dishwasher, the circuit board comprises a main control chip, a high-temperature overflow detection module and a human distance detection module are connected to the input end of the main control chip, the temperature sensor and the light brightness sensor are connected to the high-temperature overflow detection module, and the distance sensor is connected to the human distance detection module; a driving circuit is connected to the output end of the main control chip, and the motor is connected to the driving circuit.
[0006] Pin 3 of the high temperature overflow detection module is connected to pin 20 of the main control chip.
[0007] Pin 3 of the human distance detection module is connected to pin 1 of the main control chip.
[0008] The distance measuring sensor is a microwave sensor, a Doppler sensor or an infrared light sensor.
[0009] The outer surfaces of the sensing probes of the temperature sensor, the light brightness sensor and the distance measuring sensor are provided with an oleophobic layer.
[0010] The circuit board is provided with an anti-pinch module, which includes a light transmitter and a light receiver. The light transmitter and the light receiver are respectively arranged at the two ends of the inner edge of the door panel and are arranged opposite to each other; the light receiver is connected to the 19th pin of the main control chip after connecting the resistor R101, the capacitor C102 and the resistor R102.
[0011] The light emitter is a laser emitter or an infrared emitter.
[0012] A variable signal acquisition circuit is provided between the driving circuit and the motor, and the variable signal acquisition circuit is connected to the input end of the controller. After receiving the variable signal from the variable signal acquisition circuit, the controller controls the motor to stop working or rotate in the reverse direction.
[0013] The variable signal acquisition circuit is a current differential amplifier circuit. When the door panel pinches the hand or is blocked from opening outward, the current differential amplifier circuit detects an abnormal increase in current. After receiving the variable signal, the controller controls the motor to stop working or rotate in the reverse direction.
[0014] The variable signal acquisition circuit is a voltage ripple sampling circuit, a radar signal variable circuit, and a pressure signal acquisition circuit.
[0015] The utility model dishwasher can detect the temperature of the door frame through the temperature sensor, and can detect whether steam is generated through the light brightness sensor, blocking the light brightness, and the high-temperature overflow detection module determines whether there is high-temperature overflow. If there is no high-temperature overflow between the normal door and the cavity during washing in the dishwasher, the high-temperature overflow indicates that the door seal is unreliable, and the display screen can be used to feedback to the user to replace the door seal in time to reduce energy consumption loss. After the dishwasher is opened and the door panel is opened, the high-temperature overflow detection module detects the high-temperature overflow. At the same time, when the distance sensor senses that a human body is approaching, it can control the motor to rotate in the opposite direction and close the door panel to avoid burns from high-temperature gas. In addition, the utility model also has an anti-pinch function. When the hand is just stretched between the door panel and the cavity during the door closing process, the anti-pinch module and the variable signal acquisition circuit can quickly feedback the signal to the main control chip, stop the door closing action or quickly open the door in the reverse direction to prevent the hand from being pinched. It has the advantages of simple structure, convenient operation, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1It is a structural schematic diagram of the dishwasher of the utility model.
[0017] Figure 2 It is a structural schematic diagram of the door panel of the utility model.
[0018] Figure 3 This is a circuit block diagram of the utility model.
[0019] Figure 4 This is a circuit diagram of the utility model. DETAILED DESCRIPTION
[0020] like Figure 1 , Figure 2 As shown, the utility model is a dishwasher with an intelligent sensing module, which includes a dishwasher 1, a locking rod 5 driven by a motor 11 is installed above the dishwasher 1, the bottom of the door panel 2 of the dishwasher 1 is hinged to the door frame of the dishwasher 1, and a locking groove 7 is opened at the upper end of the door panel 2. After the locking rod 5 is inserted into the locking groove 7 and buckled, the locking rod 5 can drive the door panel 2 to open and close. Therefore, when the dishwasher 1 is finished, the locking rod 5 can be driven by the motor 11 to open the door panel 2 for ventilation and heat dissipation.
[0021] like Figure 3 , Figure 4 As shown, a temperature sensor 4.1 and a light brightness sensor 4.2 are arranged on the inner side of the door panel 2 or above the door frame of the dishwasher 1, and a distance sensor 3.1 is arranged on the outer side of the door panel 2. A circuit board is arranged inside the dishwasher 1, and the circuit board includes a main control chip 8. A high-temperature overflow detection module 4 and a human distance detection module 3 are connected to the input end of the main control chip 8. Pin 3 of the high-temperature overflow detection module 4 is connected to pin 20 of the main control chip 8, and the temperature sensor 4.1 and the light brightness sensor 4.2 are connected to the high-temperature overflow detection module 4. Pin 3 of the human distance detection module 3 is connected to pin 1 of the main control chip 8, and the distance sensor 3.1 is connected to the human distance detection module 3. The distance sensor 3.1 is a microwave sensor, a Doppler sensor or an infrared light sensor. A drive circuit 9 is connected to pins 16 and 17 of the output end of the main control chip 8, and the motor 11 is connected to the drive circuit 9. The outer surfaces of the sensing probes of the temperature sensor 4.1, the light brightness sensor 4.2 and the distance sensor 3.1 are provided with an oleophobic layer to prevent small water drops from adhering to the sensing probes and affecting the sensing accuracy.
[0022] The dishwasher 1 can detect the temperature at the door frame through the temperature sensor 4.1, and can detect whether steam is generated through the light brightness sensor 4.2. The high-temperature overflow detection module 4 blocks the light brightness and determines whether there is high-temperature overflow. If there is high-temperature overflow between the normal door and the cavity of the dishwasher 1 during washing, it means that the door seal is unreliable. The display screen can provide feedback to the user to replace the door seal in time to reduce energy consumption. After the dishwasher 1 is turned on and the door panel 2 is opened, the high-temperature overflow detection module 4 detects the high-temperature overflow. At the same time, when the distance sensor 3.1 senses that a human body is approaching, it can control the motor 11 to rotate in the opposite direction and close the door panel 2 to avoid burns from high-temperature gas.
[0023] The circuit board is provided with an anti-pinch module 6, which includes a light transmitter 6.1 and a light receiver 6.2. The light transmitter 6.1 and the light receiver 6.2 are respectively arranged at both ends of the inner edge of the door panel 2, and are arranged relative to each other. The light receiver 6.2 can receive the light emitted by the light transmitter 6.1. After connecting the resistor R101, the capacitor C102 and the resistor R102, the light receiver 6.2 is connected to the 19th pin of the main control chip 8. The light transmitter 6.1 can be a laser transmitter or an infrared transmitter. When the hand is just extended between the door panel 2 and the cavity during the door closing process, the light is blocked by the hand, and the light receiver 6.2 cannot receive the light. The anti-pinch module 6 can quickly feedback the signal to the main control chip 8, stop the door closing action or quickly open the door in the reverse direction to prevent the hand from being pinched.
[0024] A variable signal acquisition circuit 10 is provided between the driving circuit 9 and the motor 11. The variable signal acquisition circuit 10 is connected to the input end of the controller. After the controller receives the variable signal of the variable signal acquisition circuit 10, the controller controls the motor 11 to stop working or rotate in the reverse direction. The variable signal acquisition circuit 10 is a current differential amplifier circuit. When the door panel 2 is pinched or the opening is blocked, the current differential amplifier circuit detects that the current is abnormally increased. After the controller receives the variable signal, the motor 11 is controlled to stop working or rotate in the reverse direction. The variable signal acquisition circuit 10 is a voltage ripple sampling circuit, a radar signal variable circuit, and a pressure signal acquisition circuit. When the hand is just stretched between the door panel 2 and the cavity during the closing process, the variable signal acquisition circuit 10 can quickly feedback the signal to the main control chip 8, stop the closing action or quickly open the door in the reverse direction to prevent the hand from being pinched. The anti-pinch module 6 and the variable signal acquisition circuit 10 can double prevent pinching, which greatly improves the safety of the dishwasher 1.
Claims
1. A dishwasher with an intelligent sensing module, comprising a dishwasher, a locking rod driven by a motor is installed above the dishwasher, the bottom of the door panel of the dishwasher is hinged to the door frame of the dishwasher, a locking groove is opened at the upper end of the door panel, and after the locking rod is inserted into the locking groove and buckled, the locking rod can drive the door panel to open and close; characterized in that A temperature sensor and a light brightness sensor are arranged on the inner side of a door panel or above a door frame of the dishwasher, and a distance sensor is arranged on the outer side of the door panel. A circuit board is arranged inside the dishwasher, and the circuit board includes a main control chip. A high-temperature overflow detection module and a human distance detection module are connected to the input end of the main control chip, the temperature sensor and the light brightness sensor are connected to the high-temperature overflow detection module, and the distance sensor is connected to the human distance detection module; a drive circuit is connected to the output end of the main control chip, and the motor is connected to the drive circuit.
2. The dishwasher with intelligent sensing module according to claim 1, characterized in that Pin 3 of the high temperature overflow detection module is connected to pin 20 of the main control chip.
3. The dishwasher with intelligent sensing module according to claim 1, characterized in that Pin 3 of the human distance detection module is connected to pin 1 of the main control chip.
4. The dishwasher with intelligent sensing module according to claim 3, characterized in that The distance measuring sensor is a microwave sensor, a Doppler sensor or an infrared light sensor.
5. The dishwasher with intelligent sensing module according to claim 1, characterized in that The outer surfaces of the sensing probes of the temperature sensor, the light brightness sensor and the distance measuring sensor are provided with an oleophobic layer.
6. The dishwasher with intelligent sensing module according to any one of claims 1 to 5, characterized in that The circuit board is provided with an anti-pinch module, which includes a light transmitter and a light receiver. The light transmitter and the light receiver are respectively arranged at the two ends of the inner edge of the door panel and are arranged opposite to each other; the light receiver is connected to the 19th pin of the main control chip after connecting the resistor R101, the capacitor C102 and the resistor R102.
7. The dishwasher with intelligent sensing module according to claim 6, characterized in that The light emitter is a laser emitter or an infrared emitter.
8. The dishwasher with intelligent sensing module according to any one of claims 1 to 5, characterized in that A variable signal acquisition circuit is provided between the driving circuit and the motor, and the variable signal acquisition circuit is connected to the input end of the controller. After receiving the variable signal from the variable signal acquisition circuit, the controller controls the motor to stop working or rotate in the reverse direction.
9. The dishwasher with intelligent sensing module according to claim 8, characterized in that The variable signal acquisition circuit is a current differential amplifier circuit. When the door panel pinches the hand or is blocked from opening outward, the current differential amplifier circuit detects an abnormal increase in current. After receiving the variable signal, the controller controls the motor to stop working or rotate in the reverse direction.
10. The dishwasher with intelligent sensing module according to claim 8, characterized in that The variable signal acquisition circuit is a voltage ripple sampling circuit, a radar signal variable circuit, and a pressure signal acquisition circuit.