A switch unit and steam oven for realizing multiple operation instructions with a single button

Abstract

A switch unit and a steam cooker that use a single key to realize multiple operation instructions, relate to the field of kitchen steam cooking utensils, the switch unit comprises a key, a coding switch and a control panel, the key realizes signal transmission of three operation modes by clockwise rotation, counterclockwise rotation and pressing, the steam cooker comprises: a water supply unit, a steam generating device, a steam delivery pipeline, a power supply board and a shell, and is characterized in that it also includes the switch unit, the steam cooker can realize multiple operation functions with a single key, so that the operation is simple and fast, and it can be completed in one go, and the production cost is low, the reliability is good, the key can be operated with water, and it is a very practical and popular kitchen steam cooking equipment.

Description

Technical Field

[0001] The invention relates to the field of kitchen steam cooking appliances, and in particular to a switch unit and a steam oven which realize multiple operation instructions by using a single key. Background Art

[0002] As people's awareness of health and wellness increases, more and more intelligent steam cooking devices are entering ordinary households and becoming a method used by people for daily cooking. However, because this device is relatively automated and has many functions, manufacturers generally set many touch buttons on the surface of the device. However, such a design will bring higher production costs. At the same time, when the surface of the touch button is wet during use, the sensitivity to the finger decreases, resulting in more cases of touch failure. Summary of the invention

[0003] In view of the above reasons, we have developed a switch unit that uses a single key to implement multiple operation instructions.

[0004] A switch unit that uses a single key button to implement multiple operation instructions, characterized in that it includes a key button, a coding switch and a control panel, the coding switch includes a rotating shaft group, a signal body group and a fixed frame, the rotating shaft group includes a rotating shaft and a pressing sleeve, the signal body group includes a fluctuation disk, a signal body, a switch sheet, three first contact pins, which are one pin, two pins and three pins respectively, and two second contact pins, which are four pins and five pins respectively, the middle two pins of the three first contact pins are grounded, and the one and three pins are respectively connected to external resistors, the fixed frame includes a bracket, a shaft seat and a positioning plate, the positioning plate is fixed on the shaft seat, the control panel includes an instruction reading end, an information processor, a memory, a data transmission end and a signal output element, the instruction reading end is connected to the three first contact pins and the two second contact pins of the coding switch through wires, and the signal output element includes a display and a buzzer.

[0005] The key button realizes signal transmission of three operation modes by clockwise rotation, counterclockwise rotation and pressing. When the key button is rotated, the shaft drives the fluctuation disk to rotate through the pressing sleeve. The position of each grid of the fluctuation disk is positioned by the positioning piece. At this time, one foot and three feet of the three first contact feet have pulse signal output. When the key button rotates clockwise, the output foot is low level and the output foot appears high level. When the key button rotates counterclockwise, the output foot is high level and the output foot appears low level. The above signal is transmitted to the control board, processed by the information processor, and stored. The device stores the generated instructions and transmits them to the data transmission end and the signal output element. When the key button is pressed, the rotating shaft drives the pressing sleeve down to the switch piece, causing the switch piece to produce elastic deformation. At this time, the fourth and fifth pins of the second contact foot are connected. When the pressing time is within 1 second, the information processor recognizes it as a short press. When the pressing time is between 2 seconds and 3 seconds, the information processor recognizes it as a long press. When the pressing time exceeds 4 seconds, the information processor recognizes it as an extended press and processes it at the same time. The instructions generated after the memory is stored are transmitted to the data transmission end and the signal output element.

[0006] Furthermore, we have also developed a steam boiler, including a water supply unit, a steam generating device, a steam supply pipeline, a casing and a power board, the water supply unit includes a water tank, a water level sensor, a water pump and a water connecting pipe, the steam generating device includes a heater, a thermostat and a temperature fuse, and a data transmission terminal is installed on the power board, which is characterized in that it also includes the above-mentioned switch unit, in which the data transmission terminal on the control board is connected to the data transmission terminal on the power board through a wire.

[0007] The power board is also equipped with a connector group, wherein the a and b terminal connectors are connected to the power line, the c and d terminal connectors are electrically connected to the steam generating device, and the e and f terminal connectors are electrically connected to the water pump. The transformer circuit on the power board converts the voltage into a low voltage and outputs it to the control board through the data transmission terminal on the power board.

[0008] When the button is pressed, rotated clockwise and counterclockwise, the coding switch and the control board transmit the command to the power board, and the command is sent to the heater and the water pump through the power board and executed. The thermostat and the temperature fuse are used for overheating protection of the heater. When the temperature of the heater reaches the first limit temperature, the thermostat is activated, that is, the circuit is disconnected, so that the heater stops heating. When the temperature drops to the set temperature, the thermostat automatically connects the circuit to make the heater continue to heat. However, when the heating temperature of the heater reaches a higher second limit temperature, the temperature fuse is disconnected, and the heater no longer heats, thereby providing double protection for the heater.

[0009] The power board is also equipped with a frequency conversion circuit to control the water pump motor, thereby adjusting the water delivery amount of the water pump and further controlling the steam generation amount of the heater.

[0010] The control panel also includes a water level signal receiving end, which is connected to the water level sensor through a wire. When the water level in the water tank is lower than the set value X1, the buzzer in the control panel sounds. If the water level in the water tank continues to drop to the set value X2, the machine stops working and the display shows "Er". At this time, the user needs to intervene to restore.

[0011] The control panel also includes a Wi-Fi module, which is connected to a mobile phone. The user downloads the developer's APP to the mobile phone, completes the Wi-Fi configuration, and uses the menu on the APP to control the steam oven.

[0012] When the button is pressed, rotated clockwise or counterclockwise, the machine enters the following program: A. Working mode: ① The steam oven is powered on, and a red dot "." is displayed in the lower corner of the display; ② Long press the button: the machine is turned on, and the display shows the default steaming time of the machine; ③ Rotate the button clockwise or counterclockwise: increase or decrease the steaming time, and each rotation of the button increases or decreases 1 minute, and the display also shows the adjusted steaming time; ④ Short press the button: enter the steaming program, and the machine steams according to the default medium-speed steam volume; ⑤ During the steaming process, rotate the button clockwise or counterclockwise: increase or decrease the steam volume, and the display shows: large "≡≡", medium "==", and small "――" steam volume. After the adjustment is completed, the display re-displays the remaining steaming time; ⑥ After steaming is completed, the display shows "00"; B. Wi-Fi configuration mode: ① The steam oven is powered on, and a red dot "." is displayed in the lower corner of the display; ② Press and hold the button: the red light on the display flashes, and the Wi-Fi configuration is entered; ③ When the configuration is completed, the red light stays on. If the configuration is not completed, the red light goes out and reconfiguration is required; C. Cleaning mode: ① Connect the steam oven to the power supply; ② Press and hold the button: turn on the machine; ③ Short press the button: enter the steaming program; ④ Press and hold the button: enter the cleaning program, and the display shows "CL"; ⑤ When cleaning is completed, the display shows a red dot ".". If the button is pressed and held during the cleaning process, the cleaning will end early.

[0013] The shell includes an upper cover, an insulating glass plate and a shell lining, the water tank is sleeved with the shell lining, the power board is installed in the power board box, the water pump, the heater and the power board box are fixed on the upper cover, the thermostat and the temperature fuse are installed on the heater, the control board is installed in the control board box, the control board box is fixed on the shell lining, the coding switch is fixed to the upper cover with a nut, and a display window is opened on the upper cover and equipped with display window glass.

[0014] The surface of the key button is provided with a groove with small convex dots, and is also provided with a machine switch mark, a cooking time increase and decrease mark, and a steam volume increase and decrease mark. The key button is sleeved together with the rotating shaft, and the matching ends of the rotating shaft and the key button hole are provided with lace patterns and long grooves.

[0015] The beneficial effects of the present invention are: ① This key button can be operated with water, and will not produce the problem that the touch effect of a touch key button will deteriorate or even fail when it encounters steam water; ② Using one key button to achieve multiple functions makes the operation smooth, simple and fast; ③ The machine has low manufacturing cost and good reliability, which brings a good experience to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an electrical schematic diagram of a steam furnace according to the present invention;

[0017] Figure 2 It is an exploded view of the key button and the coding switch of the present invention;

[0018] Figure 3 is a cross-sectional view of the key button and the coding switch of the present invention;

[0019] Figure 4 This is a front view of the internal structure of the steam furnace of the present invention with the heat-insulating glass plate and the upper cover removed;

[0020] Figure 5 It is a rear view of the internal structure of the steam furnace of the present invention with the water tank and the shell lining removed;

[0021] Figure 6 is an outline diagram of a steam oven of the present invention;

[0022] Figure 7 It is a working flow chart of a steam oven according to the present invention. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1 to Figure 7 , which further illustrates the present invention but is not intended to limit the present invention.

[0024] A switch unit 1 for realizing multiple operation instructions with a single key button, characterized in that it includes a key button 11, a coding switch 12 and a control panel 13, wherein the coding switch 12 includes a rotating shaft group, a signal body group and a fixing frame, wherein the rotating shaft group includes a rotating shaft 121 and a pressing sleeve 122, wherein the signal body group includes a fluctuating disk 123, a signal body 124, a switch sheet 125, three first contact pins 126, which are one pin, two pins and three pins respectively, and two second contact pins 127, which are four pins and five pins respectively, wherein the middle two of the three first contact pins 126 are The pin is grounded, and one pin and three pins are respectively connected to external resistors. The fixing frame includes a bracket 128, a shaft seat 129 and a positioning piece 120. The positioning piece 120 is fixed on the shaft seat 129. The control board 13 includes an instruction reading terminal 131, an information processor 132, a memory 133, a data transmission terminal 134 and a signal output element. The instruction reading terminal 131 is connected to the three first contact pins 126 and the two second contact pins 127 of the coding switch 12 through wires. The signal output element includes a display 135 and a buzzer 136.

[0025] The key button 11 realizes signal transmission of three operation modes by clockwise rotation, counterclockwise rotation and pressing. When the key button 11 is rotated, the shaft 121 drives the fluctuation disk 123 to rotate through the pressing sleeve 122. The position of each grid of the fluctuation disk 123 is positioned by the positioning piece 120. At this time, one pin and three pins of the three first contact pins 126 have pulse signal output. When the key button 11 rotates clockwise, the output pin is low level and the output pins appear high level. When the key button 11 rotates counterclockwise, the output pin is high level and the output pins appear low level. The above signal is transmitted to the control board 13, processed by the information processor 132, and stored in the memory 133 to generate instructions and transmit them to the data transmission terminal 134 and the signal output terminal 134. The display 135 in the component, when the key button 11 is pressed, the rotating shaft 121 drives the pressing sleeve 122 to be pressed down to the switch piece 125, so that the switch piece 125 produces elastic deformation. At this time, the four and five pins of the two second contact feet 127 are connected. When the pressing time is within 1 second, the information processor 132 recognizes it as a short press. When the pressing time is between 2 seconds and 3 seconds, the information processor 132 recognizes it as a long press. When the pressing time exceeds 4 seconds, the information processor 132 recognizes it as an extended press. The information processor 132 also processes it. The memory 133 stores it and transmits the generated instructions to the data transmission terminal 134 and the display 135. The reset of the key button 11 after being pressed is restored by the rebound force generated by the elastic deformation of the switch piece 125.

[0026] Furthermore, we have also developed a steam boiler, including a water supply unit 2, a steam generating device 3, a steam supply pipeline 4, a shell 5 and a power board 6, the water supply unit 2 includes a water tank 21, a water level sensor 22, a water pump 23 and a water connecting pipe 24, the steam generating device 3 includes a heater 31, a thermostat 32 and a temperature fuse 33, and a data transmission terminal 61 is installed on the power board 6, which is characterized in that it also includes the above-mentioned switch unit 1, in which the data transmission terminal 134 on the control board 13 is connected to the data transmission terminal 61 on the power board 6 through a wire.

[0027] The power board 6 is also equipped with a connector group 62, wherein the a and b terminal connectors are connected to the power line 7, the c and d terminal connectors are electrically connected to the steam generating device 3, and the e and f terminal connectors are electrically connected to the water pump 23. The transformer circuit on the power board 6 converts the voltage into a low voltage of 3.3V and outputs it to the control board 13.

[0028] When the button 11 is pressed, rotated clockwise and counterclockwise, the coding switch 12 and the control board 13 transmit the command to the power board 6, and the command is sent to the heater 31 and the water pump 23 through the power board 6 and executed. The thermostat 32 and the temperature fuse 33 are used for overheating protection of the heater 31. When the temperature of the heater 31 reaches the first limit temperature of 185°C, the thermostat 32 disconnects the circuit to stop the heating of the heater 31. When the temperature drops to the set temperature, the thermostat 32 automatically connects the circuit to continue heating the heater 31. However, when the heating temperature of the heater 31 reaches the second limit temperature of 216°C, the temperature fuse 33 disconnects and the heater 31 stops heating, thereby providing double protection for the heater 31.

[0029] The power board 6 is also equipped with a frequency conversion circuit to control the water pump motor, thereby adjusting the water delivery amount of the water pump 23 and further controlling the steam generation amount of the heater 31 .

[0030] The control panel 13 also includes a water level signal receiving terminal 137, which is connected to the water level sensor 22 through a wire. When the water level in the water tank 21 is lower than the set value X1, the buzzer 136 in the control panel 13 sounds. If the water level in the water tank 21 continues to drop to the set value X2, the machine stops working and the display 135 displays "Er". At this time, the user needs to intervene to restore.

[0031] The control panel 13 also includes a Wi-Fi module 138, which is connected to a mobile phone. The user downloads the developer's APP to the mobile phone, completes the Wi-Fi configuration, and uses the menu on the APP to control the steam oven.

[0032] When the button 11 is pressed, rotated clockwise or counterclockwise, the machine enters the following program: A. Working mode: ① The steam oven is powered on, and a red dot "." is displayed at the lower corner of the display 135; ② Long press the button 11: the machine is turned on, and the display 135 displays the default steaming time "03" of the machine; ③ The button 11 rotates clockwise or counterclockwise: increase or decrease the steaming time, and each rotation of the button 11 increases or decreases 1 minute, and the display 135 displays the adjusted steaming time at the same time; ④ Short press the button 11: enter the steaming program, and the machine steams according to the default medium-grade steam volume; ⑤ During the steaming process, the button 11 rotates clockwise or counterclockwise: the steam volume will be increased or decreased, and the display 135 displays: large "≡≡", medium "==", and small "--" steam volume. After the adjustment is completed, the display 135 re-displays the remaining steaming time; ⑥ After the steaming is completed, the display 135 displays "00"; B. Wi-Fi configuration mode: ① The steam oven is powered on, and a red dot “.” is displayed in the lower corner of the display 135; ② Press and hold button 11: the red light on the display 135 flashes, and the Wi-Fi configuration is entered; ③ The configuration is completed, and the red light is on. If the configuration is not completed, the red light goes out, and reconfiguration is required; C. Cleaning mode: ① The steam oven is powered on; ② Press and hold button 11: the machine is turned on; ③ Short press button 11: enter the steaming program; ④ Press and hold button 11: enter the cleaning program, and the display 135 displays "CL"; ⑤ Cleaning is completed, and a red dot “.” is displayed on the display 135. If the button 11 is pressed and held during the cleaning process, the cleaning will be ended early.

[0033] The shell 5 includes an upper cover 51, an insulating glass plate 52 and a shell lining 53, the water tank 21 is sleeved with the shell lining 53, the power board 6 is installed in the power board box 81, the water pump 23, the heater 31 and the power board box 81 are fixed on the upper cover 51, the thermostat 32 and the temperature fuse 33 are installed on the heater 31, the control board 13 is installed in the control board box 82, the control board box 82 is fixed on the shell lining 53, the coding switch 12 is fixed to the upper cover 51 with a nut 83, a display window is opened on the upper cover 51 and a display window glass 511 is installed, a steam supply connector 512 is also installed on the upper cover 51, one end of the steam supply connector 512 is connected to the steam supply pipeline 4, and the other end is installed with an O-type silicone sealing ring, which is directly sleeved with the steamer.

[0034] The surface of the key button 11 is provided with a groove B with small convex dots, and is also provided with a machine switch mark, a cooking time increase and decrease mark, and a steam volume increase and decrease mark. The key button 11 is sleeved together with the rotating shaft 121, and the mating ends of the rotating shaft 121 and the key button hole are provided with a lace pattern C and a long groove D.

[0035] The above embodiments are only used to further illustrate a switch unit and a steam oven of the present invention that use a single button to implement multiple operation instructions. Common changes and substitutions made by technicians in this field within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A switch unit that uses a single button to implement multiple operation instructions, characterized in that It includes a key button, a coding switch and a control panel, the coding switch includes a rotating shaft group, a signal body group and a fixing frame, the rotating shaft group includes a rotating shaft and a pressing sleeve, the signal body group includes a fluctuation plate, a signal body, a switch sheet, three first contact pins, which are one pin, two pins and three pins respectively, and two second contact pins, which are four pins and five pins respectively, the middle two pins of the three first contact pins are grounded, and the one and three pins are respectively connected to external resistors, the fixing frame includes a bracket, a shaft seat and a positioning sheet, the positioning sheet is fixed on the shaft seat, the control panel includes an instruction reading end, an information processor, a memory, a data transmission end and a signal output element, the instruction reading end is connected to the three first contact pins and the two second contact pins of the coding switch through a wire, and the signal output element includes a display and a buzzer; The key button realizes signal transmission of three operation modes by clockwise rotation, counterclockwise rotation and pressing. When the key button is rotated, the shaft drives the fluctuation disk to rotate through the pressing sleeve. The position of each grid of the fluctuation disk is positioned by the positioning piece. At this time, one foot and three feet of the three first contact feet have pulse signal output. When the key button rotates clockwise, the output foot is low level and the output foot appears high level. When the key button rotates counterclockwise, the output foot is high level and the output foot appears low level. The signal generated when the key button is rotated is transmitted to the control board and processed by the information processor. The information processor processes the information, and after the information is stored in the memory, the information is generated and transmitted to the data transmission end and the signal output element. When the key button is pressed, the shaft drives the pressing sleeve to press down to the switch sheet, causing the switch sheet to produce elastic deformation. At this time, the fourth and fifth pins of the second contact foot are connected. When the pressing time is within 1 second, the information processor recognizes it as a short press. When the pressing time is between 2 seconds and 3 seconds, the information processor recognizes it as a long press. When the pressing time exceeds 4 seconds, the information processor recognizes it as an extended press. At the same time, the information processor processes the information, and the information processor processes the information. The information generated after the information is stored in the memory is transmitted to the data transmission end and the signal output element. The surface of the key button is provided with a groove with small convex dots, and is also provided with a machine switch mark, a cooking time increase and decrease mark, and a steam volume increase and decrease mark. The key button is sleeved together with the rotating shaft, and the matching ends of the rotating shaft and the key button hole are provided with lace patterns and long grooves.

2. A steam boiler, comprising a water supply unit, a steam generating device, a steam delivery pipeline, a housing and a power board, wherein the water supply unit comprises a water tank, a water level sensor, a water pump and a water connecting pipe, the steam generating device comprises a heater, a thermostat and a temperature fuse, and a data transmission terminal is installed on the power board, characterized in that It also includes the switch unit as claimed in claim 1, in which the data transmission terminal on the control board is connected to the data transmission terminal on the power board through a wire.

3. A steam oven according to claim 2, characterized in that The power board is also equipped with a connector group, wherein the a and b terminal connectors are connected to the power line, the c and d terminal connectors are electrically connected to the steam generating device, and the e and f terminal connectors are electrically connected to the water pump. The transformer circuit on the power board converts the voltage into a low voltage and outputs it to the control board through the data transmission terminal and the wire.

4. A steam oven according to claim 2, characterized in that When the button in the switch unit is pressed, rotated clockwise and counterclockwise, the generated instructions are transmitted to the power board by the coding switch and the control board, and the instructions are sent to the heater and the water pump through the power board and executed. The thermostat and the temperature fuse are used for overheating protection of the heater. When the temperature of the heater reaches the first limit temperature, the thermostat is activated, that is, the circuit is disconnected. When the temperature drops to the set temperature, the thermostat automatically connects the circuit again to allow the heater to continue heating. When the heating temperature of the heater reaches the second limit temperature, the temperature fuse is disconnected. A frequency conversion circuit is also installed on the power board to control the water pump motor and realize the adjustment of the water delivery volume of the water pump.

5. A steam oven according to claim 2, characterized in that The control board in the switch unit also includes a water level signal receiving end, which is connected to the water level sensor through a wire. When the water level in the water tank is lower than the set value X1, the buzzer in the control board sounds. If the water level in the water tank continues to drop to the set value X2, the machine stops working and the display shows "Er".

6. A steam oven according to claim 2, characterized in that The control panel in the switch unit also includes a Wi-Fi module, which is connected to a mobile phone. The user downloads the developer's APP to the mobile phone and uses the menu on the APP to control the steam oven.

7. A steam oven according to claim 2, characterized in that When the button of the switch unit is pressed, rotated clockwise or counterclockwise, the machine enters the following program: A. Working mode: ① The steam oven is powered on, and a red dot ".." is displayed in the lower corner of the display; ② Long press the button: the machine is turned on, and the display shows the default steaming time of the machine; ③ Rotate the button clockwise or counterclockwise: increase or decrease the steaming time, and each rotation of the button increases or decreases 1 minute, and the display shows the adjusted steaming time; ④ Short press the button: enter the steaming program, and the machine steams according to the default medium-speed steam volume; ⑤ During the steaming process, rotate the button clockwise or counterclockwise: increase or decrease the steam volume, and the display shows: large "≡≡", medium "==", small "――" steam volume. After the adjustment is completed, the display re-displays the remaining steaming time; ⑥ Steaming is completed, and the display shows "00"; B. Wi-Fi configuration mode: ① The steam oven is connected to the power supply, and a red dot ".." is displayed in the lower corner of the display; ② Press and hold the button: the red light on the display flashes, and the Wi-Fi configuration is entered; ③ The configuration is completed, the red light is on, and if the configuration is not completed, the red light goes out; C. Cleaning mode: ① The steam oven is connected to the power supply; ② Press and hold the button: the machine is turned on; ③ Short press the button: enter the steaming program; ④ Press and hold the button: enter the cleaning program, and the display shows "CL"; ⑤ Cleaning is completed, and the display shows a red dot ".." If the button is pressed and held during the cleaning process, the cleaning will be ended early.

8. A steam oven according to claim 2, characterized in that The shell includes an upper cover, an insulating glass plate and a shell lining, the water tank is sleeved with the shell lining, the power board is installed in the power board box, the water pump, the heater and the power board box are fixed on the upper cover, the thermostat and the temperature fuse are installed on the heater, the control board is installed in the control board box, the control board box is fixed on the shell lining, the coding switch is connected to the upper cover with a nut, and a display window is opened on the upper cover and equipped with display window glass.

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