Range hood control circuit, control panel and control system thereof

Abstract

The application relates to an oil fume machine control circuit, a control panel and a control system thereof, wherein the circuit is connected with a lifting door motor through a lifting door relay assembly; connected with an air suction motor through an air suction relay assembly; connected with the lifting door relay assembly and the air suction relay assembly through a power conversion circuit; connected with the power conversion circuit, the lifting door relay assembly and the air suction relay assembly through a processor; connected between the processor and a ground wire through a lifting door switching end assembly; connected between the processor and the ground wire through an air suction switching end assembly, so that a user can control the lifting door switching end assembly, switch the current of the lifting door motor, and switch different types of lifting doors; the user can control the air suction switching end assembly to switch the rotating speed of the air suction motor or the type of the air suction motor, and then switch the application on different types of motors, diversify the function of the oil fume machine control panel, improve the intelligent degree, facilitate the user to replace the control panel, and improve the universality.

Description

TECHNICAL FIELD

[0001] The present application relates to the range hood control technical field, in particular to a range hood control circuit, a control panel and a control system thereof. BACKGROUND

[0002] With the progress of science and technology and the improvement of people's living standards, the range hood has entered thousands of households and become an indispensable household appliance in the kitchen. Because there are many manufacturers developing range hoods, and the product update of range hoods is also very fast, resulting in many types and models of range hoods on the market, which brings great trouble to maintenance services, and it is difficult to find the same spare parts to replace, which brings great inconvenience to users.

[0003] At present, the existing control panel for controlling the range hood generally adopts a remote control adjustment circuit board, which has low intelligence and few functions, and it is troublesome for users to replace the control panel, and the universality is poor.

[0004] In the implementation process, the inventor found that at least the following problems exist in the prior art: the traditional range hood control panel has single function, low intelligence, and poor universality, and it is troublesome for users to replace the control panel. SUMMARY

[0005] Therefore, it is necessary to provide a range hood control circuit, a control panel and a control system thereof in view of the problems of the traditional range hood control panel, such as single function, low intelligence, and poor universality, and it is troublesome for users to replace the control panel.

[0006] In order to achieve the above purpose, the embodiment of the present application provides a range hood control circuit, comprising:

[0007] The lifting door relay assembly includes a lifting door control end, a lifting door output end and a lifting door input end; the lifting door output end is used for connecting the lifting door motor;

[0008] The air suction relay assembly includes an air suction control end, an air suction output end and an air suction input end; the air suction output end is used for connecting the air suction motor; the power conversion circuit is connected to the lifting door input end and the air suction input end respectively;

[0009] The processor is connected to the power conversion circuit, the lifting door control end and the air suction control end respectively;

[0010] The lifting door switching end assembly is used for switching the current of the lifting door motor; the first end group of the lifting door switching end assembly is used for connecting the ground wire, and the second end group of the lifting door switching end assembly is connected to the processor respectively;

[0011] The air-extracting switching end assembly is used for switching the rotating speed and / or type of the air-extracting motor.

[0012] In one embodiment, the up-and-down door relay assembly includes a first up-and-down door relay and a second up-and-down door relay.

[0013] The first up-and-down door control end of the first up-and-down door relay is connected to the processor, the first up-and-down door output end of the first up-and-down door relay is connected to the first motor socket, and the first up-and-down door input end of the first up-and-down door relay is connected to the output end of the power conversion circuit; the second up-and-down door control end of the second up-and-down door relay is connected to the processor, the second up-and-down door output end of the second up-and-down door relay is connected to the first motor socket, and the second up-and-down door input end of the second up-and-down door relay is connected to the output end of the power conversion circuit; wherein the first motor socket includes a first-size motor socket and / or a second-size motor socket.

[0014] In one embodiment, the up-and-down door switching end assembly includes a first up-and-down door switching interface and a second up-and-down door switching interface; the first end of the first up-and-down door switching interface is connected to the ground wire, and the second end of the first up-and-down door switching interface is connected to the processor; the first end of the second up-and-down door switching interface is connected to the ground wire, and the second end of the second up-and-down door switching interface is connected to the processor.

[0015] When the first up-and-down door switching interface is short-circuited and the second up-and-down door switching interface is disconnected, the processor controls the first up-and-down door relay to be closed and the second up-and-down door relay to be disconnected, so that the first motor socket outputs a first driving current; when the first up-and-down door switching interface is disconnected and the second up-and-down door switching interface is short-circuited, the processor controls the first up-and-down door relay to be disconnected and the second up-and-down door relay to be closed, so that the first motor socket outputs a second driving current; when the first up-and-down door switching interface is short-circuited and the second up-and-down door switching interface is short-circuited, the processor controls the first up-and-down door relay to be closed and the second up-and-down door relay to be closed, so that the first motor socket outputs a third driving current; wherein the first driving current is less than the third driving current, and the third driving current is less than the second driving current.

[0016] In one embodiment, the air-extracting relay assembly includes a first air-extracting relay, a second air-extracting relay, and a third air-extracting relay.

[0017] The first air extraction relay has a first air extraction control end connected to the processor, a first air extraction output end connected to the first output interface, and a first air extraction input end connected to the output end of the power conversion circuit. The second air extraction relay has a second air extraction control end connected to the processor, a second air extraction output end connected to the second output interface, and a second air extraction input end connected to the output end of the power conversion circuit. The third air extraction relay has a third air extraction control end connected to the processor, a third air extraction output end connected to the third output interface, and a third air extraction input end connected to the output end of the power conversion circuit. The first output interface and / or the second output interface and / or the third output interface are connected to the air extraction motor.

[0018] In one embodiment, the air extraction switching end assembly includes a first air extraction switching interface and a second air extraction switching interface. The first end of the first air extraction switching interface is connected to the ground wire, and the second end of the first air extraction switching interface is connected to the processor. The first end of the second air extraction switching interface is connected to the ground wire, and the second end of the second air extraction switching interface is connected to the processor.

[0019] When the first air extraction switching interface is short-circuited and the second air extraction switching interface is disconnected, the processor controls the first air extraction relay to be closed and the third air extraction relay to be closed, so that the first output interface outputs the fourth drive signal and the third output interface outputs the fifth drive signal. The fourth drive signal is used to drive the first air extraction motor to work at the first rotational speed, and the fifth drive signal is used to drive the second air extraction motor to work at the third rotational speed.

[0020] When the first air extraction switching interface is disconnected and the second air extraction switching interface is short-circuited, the processor controls the first air extraction relay to be closed or the third air extraction relay to be closed, so that the first output interface outputs the first drive signal or the third output interface outputs the third drive signal. The first drive signal is used to drive the third air extraction motor to work at the first rotational speed, and the third drive signal is used to drive the third air extraction motor to work at the third rotational speed.

[0021] When the first air extraction switching interface is disconnected and the second air extraction switching interface is disconnected, the processor controls the first air extraction relay to be closed, the second air extraction relay to be closed, or the third air extraction relay to be closed, so that the first output interface outputs the first drive signal, the second output interface outputs the second drive signal, or the third output interface outputs the third drive signal. The first drive signal is used to drive the third air extraction motor to work at the first rotational speed, the second drive signal is used to drive the second air extraction motor to work at the second rotational speed, and the third drive signal is used to drive the third air extraction motor to work at the third rotational speed. The first rotational speed is greater than the second rotational speed, and the second rotational speed is greater than the third rotational speed.

[0022] In one of the embodiments, the range hood control circuit further comprises a speaker interface circuit for plugging a speaker, a pilot lamp interface circuit for plugging a pilot lamp, and a display screen interface circuit for plugging a display screen; a control end of the speaker interface circuit is connected to the processor, and a power supply end of the speaker interface circuit is connected to the output end of the power conversion circuit; a control end of the pilot lamp interface circuit is connected to the processor, and a power supply end of the pilot lamp interface circuit is connected to the output end of the power conversion circuit; a control end of the display screen interface circuit is connected to the processor, and a power supply end of the display screen interface circuit is connected to the output end of the power conversion circuit.

[0023] In one of the embodiments, the range hood control circuit further comprises a relay drive circuit; a first input end and a second input end of the relay drive circuit are respectively connected to the processor, a first output end of the relay drive circuit is connected to the damper relay assembly, and a second output end of the relay drive circuit is connected to the exhaust relay assembly.

[0024] In another aspect, the embodiments of the present application further provide a range hood control panel, comprising a circuit substrate, and a circuit layer arranged on the circuit substrate; the circuit layer is provided with the range hood control circuit of any one of the above.

[0025] In another aspect, the embodiments of the present application further provide a range hood control system, comprising a range hood, the range hood comprising an exhaust motor and a damper motor; the system further comprises a display screen, a speaker, a pilot lamp, and the range hood control panel; the display screen, the speaker, and the pilot lamp are electrically connected to the range hood control panel; the range hood control panel is electrically connected to the exhaust motor and / or the damper motor.

[0026] The speaker, the pilot lamp, and the range hood control panel are arranged in an outer housing of the range hood; the display screen is adhered to the outer housing of the range hood.

[0027] In one of the embodiments, the display screen is provided with a clamping hook, and the clamping hook is used for clamping the outer housing of the range hood.

[0028] One of the above technical solutions has the following advantages and beneficial effects:

[0029] In each of the above embodiments of the range hood control circuit, the lifting door output end of the lifting door relay assembly is connected to the lifting door motor; the exhaust output end of the exhaust relay assembly is connected to the exhaust motor; the output end of the power conversion circuit is connected to the lifting door input end of the lifting door relay assembly and the exhaust input end of the exhaust relay assembly respectively; the processor is connected to the power conversion circuit, the lifting door control end of the lifting door relay assembly, and the exhaust control end of the exhaust relay assembly respectively; the first end group of the lifting door switching end assembly is used for connecting the ground wire, and the second end group of the lifting door switching end assembly is connected to the processor respectively; the first end group of the exhaust switching end assembly is used for connecting the ground wire, and the second end group of the exhaust switching end assembly is connected to the processor respectively. Thus, the user can control the lifting door switching end assembly (such as short-circuiting the corresponding end group or disconnecting the corresponding end group) to switch the current of the lifting door motor, thereby realizing the switching of the application on different types of lifting doors (such as small glass lifting doors, medium glass lifting doors, and large glass lifting doors); the user can control the exhaust switching end assembly (such as short-circuiting the corresponding end group or disconnecting the corresponding end group) to switch the speed of the exhaust motor and / or the type of the exhaust motor, thereby realizing the switching of the application on different types of motors (such as single-motor 2-speed, single-motor 3-speed, and double-motor single-speed). Thus, the function of the range hood control board is diversified, the intelligent degree is improved, the user is facilitated to replace the control board, and the universality of the range hood control is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The first circuit schematic diagram of the range hood control circuit in one embodiment;

[0031] Figure 2 The second circuit schematic diagram of the range hood control circuit in one embodiment;

[0032] Figure 3 The third circuit schematic diagram of the range hood control circuit in one embodiment;

[0033] Figure 4 The specific circuit principle schematic diagram of the range hood control circuit in one embodiment;

[0034] Figure 5 The structure schematic diagram of the range hood control board in one embodiment;

[0035] Figure 6 The first structure schematic diagram of the range hood control system in one embodiment. DETAILED DESCRIPTION

[0036] In the following, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort should fall into the protection scope of the present application.

[0037] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those clearly listed steps or units, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0038] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0039] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For a person of ordinary skill in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0040] In addition, the meaning of the term "a plurality of" should be two and more than two.

[0041] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0042] In one embodiment, as shown in Figure 1 An extractor control circuit is provided, comprising:

[0043] The lifting door relay assembly 110 includes a lifting door control end, a lifting door output end and a lifting door input end; the lifting door output end is used for connecting a lifting door motor;

[0044] The exhaust relay assembly 120 includes an exhaust control end, an exhaust output end and an exhaust input end; the exhaust output end is used for connecting an exhaust motor;

[0045] The power conversion circuit 130 has output ends connected to the lifting door input end and the exhaust input end respectively;

[0046] The processor 140 is connected to the power conversion circuit 130, the lifting door control end and the exhaust control end respectively;

[0047] The lifting door switching end assembly 150 is used for switching the current of the lifting door motor; a first end group of the lifting door switching end assembly 150 is used for connecting a ground wire, and a second end group of the lifting door switching end assembly 150 is connected to the processor 140 respectively;

[0048] The exhaust switching end assembly 160 is used for switching the rotating speed and / or the type of the exhaust motor; a first end group of the exhaust switching end assembly 160 is used for connecting a ground wire, and a second end group of the exhaust switching end assembly 160 is connected to the processor 140 respectively.

[0049] The lifting door relay assembly 110 can be used for controlling the on-off of the lifting door motor, and includes at least one lifting door relay. The lifting door motor can be a motor with different driving current sizes; for example, the lifting door motor can be divided into a motor applied to a large glass lifting door, a motor applied to a medium glass lifting door and a motor applied to a small glass lifting door according to application objects. The driving current required by the motor applied to the large glass lifting door is relatively large, the driving current required by the motor applied to the medium glass lifting door is medium, and the driving current required by the motor applied to the small glass lifting door is relatively small. The exhaust relay assembly 120 can be used for controlling the on-off of the exhaust motor, and includes at least one exhaust relay. The exhaust motor can be a single exhaust motor or a double exhaust motor. The rotating speed of the exhaust motor can be single speed, 2-speed and / or 3-speed. The single speed of the exhaust motor means that the exhaust motor has one gear rotating speed (constant rotating speed); the 2-speed of the exhaust motor means that the exhaust motor has two gear rotating speeds (low rotating speed and high gear speed); and the 3-speed of the exhaust motor means that the exhaust motor has three gear rotating speeds (low rotating speed, medium rotating speed and high gear speed).

[0050] The power conversion circuit 130 can be used to rectify, filter, step-down and stabilize the input commercial power (220V and 50Hz) and output power (e.g. 12V) meeting the power supply requirements of the lift door relay assembly 110 and the exhaust relay assembly 120; the power conversion circuit 130 can also output power voltage (e.g. 5V) meeting the power supply requirements of the processor 140. The processor 140 can be a single-chip microcomputer; the processor 140 can be used to control the on-off of the lift door relay assembly 110 and / or the exhaust relay assembly 120.

[0051] The lift door switching terminal assembly 150 includes a plurality of switching terminal groups, and the user can short-circuit or disconnect the corresponding terminal group, and then the processor 140 can control the corresponding lift door relay in the lift door relay assembly 110 to conduct according to the switching state of the lift door switching terminal assembly 150, so that the corresponding lift door relay outputs the corresponding lift door motor current to the lift door motor, realizes the switching of the lift door motor current, and then the corresponding lift door motor can be driven to work by the lift door motor current. The exhaust switching terminal assembly 160 includes a plurality of switching terminal groups, and the user can short-circuit or disconnect the corresponding terminal group, and then the processor 140 can control the corresponding exhaust relay in the exhaust relay assembly 120 to conduct according to the switching state of the exhaust switching terminal assembly 160, so that the corresponding exhaust relay controls the corresponding exhaust motor to work at the corresponding speed, realizes the switching of the exhaust motor speed and / or the exhaust motor type, and then realizes the switching of the application on different types of motors (e.g. single motor 2-speed, single motor 3-speed and double motor single-speed).

[0052] Specifically, the lifting door output end of the lifting door relay assembly 110 is connected with the lifting door motor; the exhaust output end of the exhaust relay assembly 120 is connected with the exhaust motor; the output end of the power conversion circuit 130 is connected with the lifting door input end of the lifting door relay assembly 110 and the exhaust input end of the exhaust relay assembly 120 respectively; the processor 140 is connected with the power conversion circuit 130, the lifting door control end of the lifting door relay assembly 110 and the exhaust control end of the exhaust relay assembly 120 respectively; the first end group of the lifting door switching end assembly 150 is used for connecting the ground wire, and the second end group of the lifting door switching end assembly 150 is connected with the processor 140 respectively; the first end group of the exhaust switching end assembly 160 is used for connecting the ground wire, and the second end group of the exhaust switching end assembly 160 is connected with the processor 140 respectively, so that the user can control the lifting door switching end assembly 150 (such as short-circuiting the corresponding end group or disconnecting the corresponding end group) to switch the current of the lifting door motor, and then switch the application on different types of lifting doors (such as small glass lifting doors, medium glass lifting doors and large glass lifting doors); the user can control the exhaust switching end assembly 160 (such as short-circuiting the corresponding end group or disconnecting the corresponding end group) to switch the speed of the exhaust motor and / or the type of the exhaust motor, and then switch the application on different types of motors (such as single motor 2-speed, single motor 3-speed and double motor single-speed), so as to diversify the function of the range hood control panel, improve the intelligent degree, facilitate the user to replace the control panel, and improve the universality of the range hood control.

[0053] In one embodiment, as Figure 2 The lifting door relay assembly includes a first lifting door relay 112 and a second lifting door relay 114.

[0054] The first lifting door control end of the first lifting door relay 112 is connected with the processor 140, the first lifting door output end of the first lifting door relay 112 is used for connecting the first motor socket, and the first lifting door input end of the first lifting door relay 112 is connected with the output end of the power conversion circuit 130; the second lifting door control end of the second lifting door relay 114 is connected with the processor 140, the second lifting door output end of the second lifting door relay 114 is used for connecting the first motor socket, and the second lifting door input end of the second lifting door relay 114 is connected with the output end of the power conversion circuit 130; wherein the first motor socket includes a first size motor socket and / or a second size motor socket.

[0055] The first motor socket can include a first size motor socket and a second size motor socket, and the first motor socket can also be a first size motor socket or a second size motor socket. The socket size of the first size motor socket is larger than the socket size of the second size motor socket. In one example, the first size socket and the second size socket are both two-pin plug-in sockets.

[0056] Specifically, the first lifting door control end of the first lifting door relay 112 is connected to the processor 140, the first lifting door output end of the first lifting door relay 112 is connected to the first motor socket, and the first lifting door input end of the first lifting door relay 112 is connected to the output end of the power conversion circuit 130; the second lifting door control end of the second lifting door relay 114 is connected to the processor 140, the second lifting door output end of the second lifting door relay 114 is connected to the first motor socket, and the second lifting door input end of the second lifting door relay 114 is connected to the output end of the power conversion circuit 130; then the user can plug the wiring terminal of the lifting door motor of the range hood into the first motor socket, control the corresponding relay to be turned on (the first lifting door relay 112 and / or the second lifting door relay 114) through the processor 140, so that the lifting door motor starts to work, and then the lifting door motor drives the corresponding lifting door to work.

[0057] In the above embodiment, by setting different sizes of motor sockets, the lifting door motor with different wiring terminals can be applied, thereby improving the versatility of the range hood control circuit. By setting the first lifting door relay 112 and the second lifting door relay 114, different lifting door relays output different motor driving currents, so that the range hood control circuit can be applied to different range hood lifting doors (such as small glass lifting doors, medium glass lifting doors, and large glass lifting doors), thereby further improving the versatility of the range hood control circuit and diversifying the functions of the range hood control board.

[0058] In one embodiment, as shown in Figure 2 The lifting door switching end assembly includes a first lifting door switching interface 152 and a second lifting door switching interface 154; the first end of the first lifting door switching interface 152 is connected to the ground wire, and the second end of the first lifting door switching interface 152 is connected to the processor 140; the first end of the second lifting door switching interface 154 is connected to the ground wire, and the second end of the second lifting door switching interface 154 is connected to the processor 140.

[0059] When the first lifting door switching interface 152 is short-circuited and the second lifting door switching interface 154 is disconnected, the processor 140 controls the first lifting door relay to be closed and the second lifting door relay to be disconnected, so that the first motor socket outputs the first driving current; when the first lifting door switching interface 152 is disconnected and the second lifting door switching interface 154 is short-circuited, the processor 140 controls the first lifting door relay to be disconnected and the second lifting door relay to be closed, so that the first motor socket outputs the second driving current; when the first lifting door switching interface 152 is short-circuited and the second lifting door switching interface 154 is short-circuited, the processor 140 controls the first lifting door relay to be closed and the second lifting door relay to be closed, so that the first motor socket outputs the third driving current; wherein the first driving current is less than the second driving current, and the second driving current is less than the third driving current.

[0060] The first lifting door switching interface 152 can include a first plug-in pin and a second plug-in pin, the first plug-in pin is grounded, and the second plug-in pin is connected to the processor 140. When a wire (metal wire) is connected between the first plug-in pin and the second plug-in pin, the first lifting door switching interface 152 is short-circuited; if there is no wire or the wire is disconnected between the first plug-in pin and the second plug-in pin, the first lifting door switching interface 152 is disconnected. The second lifting door switching interface 154 can include a third plug-in pin and a fourth plug-in pin, the third plug-in pin is grounded, and the fourth plug-in pin is connected to the processor 140. When a wire (metal wire) is connected between the third plug-in pin and the fourth plug-in pin, the second lifting door switching interface 154 is short-circuited; if there is no wire or the wire is disconnected between the third plug-in pin and the fourth plug-in pin, the second lifting door switching interface 154 is disconnected.

[0061] Specifically, the small lifting door motor for driving the small glass lifting door is plugged into the first motor socket, a wire is plugged into the first lifting door switching interface 152, and no wire is plugged into the second lifting door switching interface 154, so that the first lifting door switching interface 152 is short-circuited and the second lifting door switching interface 154 is disconnected, and then the processor 140 controls the first lifting door relay to be closed and the second lifting door relay to be disconnected, so that the first motor socket outputs a first driving current (such as 250 mA), and then drives the small lifting door motor to work, so that the small glass lifting door is lifted and lowered by the small lifting door motor.

[0062] The large lifting door motor for driving the large glass lifting door is plugged into the first motor socket, a wire is plugged into the second lifting door switching interface 154, and no wire is plugged into the first lifting door switching interface 152, so that the first lifting door switching interface 152 is disconnected and the second lifting door switching interface 154 is short-circuited, and then the processor 140 controls the first lifting door relay to be disconnected and the second lifting door relay to be closed, so that the first motor socket outputs a second driving current (such as 350 mA), and then drives the large lifting door motor to work, so that the large glass lifting door is lifted and lowered by the large lifting door motor.

[0063] The medium lifting door motor for driving the medium glass lifting door is plugged into the first motor socket, a wire is plugged into the first lifting door switching interface 152, and a wire is plugged into the second lifting door switching interface 154, so that the first lifting door switching interface 152 is short-circuited and the second lifting door switching interface 154 is short-circuited, and then the processor 140 controls the first lifting door relay to be closed and the second lifting door relay to be closed, so that the first motor socket outputs a third driving current (such as between 250 mA and 350 mA), and then drives the medium lifting door motor to work, so that the medium glass lifting door is lifted and lowered by the medium lifting door motor.

[0064] It should be noted that if the first lifting door switching interface 152 and the second lifting door switching interface 154 are not plugged with the lead, that is, the first lifting door switching interface 152 and the second lifting door switching interface 154 are both disconnected, the corresponding lifting function is cancelled. If the lifting door opening direction is reversed, the plug-in terminals of the lifting door motor can be adjusted.

[0065] In the above embodiment, by controlling the lifting door switching end assembly (such as short-circuiting the corresponding lifting door switching interface or disconnecting the corresponding lifting door switching interface), the lifting door motor current is switched, and the application on different types of lifting doors (such as small glass lifting door, medium glass lifting door and large glass lifting door) is switched, thereby further improving the versatility of the range hood control circuit and diversifying the functions of the range hood control board.

[0066] In one embodiment, as Figure 2 In the above embodiment, the first air suction relay 122, the second air suction relay 124 and the third air suction relay 126 are connected to the processor 140, and the first air suction output end of the first air suction relay 122 is connected to the first output interface, the second air suction output end of the second air suction relay 124 is connected to the second output interface, and the third air suction output end of the third air suction relay 126 is connected to the third output interface. The first air suction input end of the first air suction relay 122 is connected to the output end of the power conversion circuit 130, the second air suction input end of the second air suction relay 124 is connected to the output end of the power conversion circuit 130, and the third air suction input end of the third air suction relay 126 is connected to the output end of the power conversion circuit 130. The first output interface and / or the second output interface and / or the third output interface are respectively connected to the air suction motor.

[0067] The first air suction relay 122 is used to drive the air suction motor to work at a first rotating speed, the second air suction relay 124 is used to drive the air suction motor to work at a second rotating speed, and the third air suction relay 126 is used to drive the air suction motor to work at a third rotating speed. The first rotating speed (fast) is greater than the second rotating speed (medium), and the second rotating speed is greater than the third rotating speed (slow).

[0068] Specifically, by setting the first exhaust relay 122, the second exhaust relay 124 and the third exhaust relay 126, different exhaust relays correspond to control the exhaust motor to work at the corresponding motor speed, and then the range hood control circuit can be applied to different motors (such as different motor types and motor speeds, for example, double-motor single-speed, single-motor 2-speed and single-motor 3-speed), thereby further improving the versatility of the range hood control circuit and diversifying the functions of the range hood control board.

[0069] In one embodiment, as Figure 2 In one embodiment, as

[0070] When the first exhaust switching interface 162 is short-circuited and the second exhaust switching interface 164 is disconnected, the processor 140 controls the first exhaust relay 122 to be closed and the third exhaust relay 126 to be closed, so that the first output interface outputs the fourth driving signal and the third output interface outputs the fifth driving signal; the fourth driving signal is used to drive the first exhaust motor to work at the first speed; the fifth driving signal is used to drive the second exhaust motor to work at the third speed. When the first exhaust switching interface 162 is disconnected and the second exhaust switching interface 164 is short-circuited, the processor 140 controls the first exhaust relay 122 to be closed or the third exhaust relay 126 to be closed, so that the first output interface outputs the first driving signal or the third output interface outputs the third driving signal; the first driving signal is used to drive the third exhaust motor to work at the first speed; the third driving signal is used to drive the third exhaust motor to work at the third speed. When the first exhaust switching interface 162 is disconnected and the second exhaust switching interface 164 is disconnected, the processor 140 controls the first exhaust relay 122 to be closed, the second exhaust relay 124 to be closed or the third exhaust relay 126 to be closed, so that the first output interface outputs the first driving signal, the second output interface outputs the second driving signal or the third output interface outputs the third driving signal; the first driving signal is used to drive the third exhaust motor to work at the first speed; the second driving signal is used to drive the second exhaust motor to work at the second speed; the third driving signal is used to drive the third exhaust motor to work at the third speed; wherein the first speed is greater than the second speed, and the second speed is greater than the third speed.

[0071] The first air suction switching interface 162 can include a fifth plug-in pin and a sixth plug-in pin, the fifth plug-in pin being grounded, and the sixth plug-in pin being connected to the processor 140. When a wire (metal wire) is connected between the fifth plug-in pin and the sixth plug-in pin, the first air suction switching interface 162 is short-circuited; if there is no wire or the wire is disconnected between the fifth plug-in pin and the sixth plug-in pin, the first air suction switching interface 162 is disconnected. The second air suction switching interface 164 can include a seventh plug-in pin and an eighth plug-in pin, the seventh plug-in pin being grounded, and the eighth plug-in pin being connected to the processor 140. When a wire (metal wire) is connected between the seventh plug-in pin and the eighth plug-in pin, the second air suction switching interface 164 is short-circuited; if there is no wire or the wire is disconnected between the seventh plug-in pin and the eighth plug-in pin, the second air suction switching interface 164 is disconnected.

[0072] In one example, the third air suction motor is a single-motor 2-speed 4-wire motor, and the first wire (red wire) of the third air suction motor is connected to the first air suction relay 122, the second wire (black wire) is connected to the third air suction relay 126, and the third wire (yellow wire) and the fourth wire (blue wire) are connected with a capacitor. By plugging the wire on the first air suction switching interface 162 and not plugging the wire on the second air suction switching interface 164, the processor 140 controls the first air suction relay 122 to be closed (for example, the user can select the fast gear by operating the button, so that the processor 140 controls accordingly), the first output interface outputs the first driving signal, so that the third air suction motor can work at the first rotating speed; the processor 140 can also control the third air suction relay 126 to be closed (for example, the user can select the slow gear by operating the button, so that the processor 140 controls accordingly), the third output interface outputs the third driving signal, so that the third air suction motor can work at the third rotating speed, realizing the single-motor 2-speed function, improving the versatility of the range hood control circuit, and diversifying the functions of the range hood control board.

[0073] In one example, the third exhaust fan motor is a single motor 3-speed 5-wire motor, and the first lead (red lead) of the third exhaust fan motor is connected to the first exhaust relay 122, the second lead (black lead) is connected to the third exhaust relay 126, the fifth lead (orange lead) is connected to the second exhaust relay 124, and the third lead (yellow lead) and the fourth lead (blue lead) are connected with a capacitor. By not plugging the leads on the first exhaust switching interface 162 and not plugging the leads on the second exhaust switching interface 164, the processor 140 controls the first exhaust relay 122 to be closed (e.g., the user can operate the key to select the fast gear, so that the processor 140 controls accordingly) when the first exhaust switching interface 162 is disconnected and the second exhaust switching interface 164 is disconnected, the first output interface outputs the first drive signal, so that the third exhaust fan motor can work at the first rotating speed (fast); the processor 140 can also control the second exhaust relay 124 to be closed (e.g., the user can operate the key to select the medium gear, so that the processor 140 controls accordingly), the second output interface outputs the second drive signal, so that the third exhaust fan motor can work at the second rotating speed (medium); the processor 140 can also control the third exhaust relay 126 to be closed (e.g., the user can operate the key to select the slow gear, so that the processor 140 controls accordingly), the third output interface outputs the third drive signal, so that the third exhaust fan motor can work at the third rotating speed (slow), realizing the single motor 3-speed function, improving the versatility of the range hood control circuit, and diversifying the functions of the range hood control board;

[0074] In one example, the suction motor can be a double-motor single-speed motor (including a first suction motor and a second suction motor), the first lead (red lead) of the first suction motor is connected to the first suction relay 122, the first lead (red lead) of the second suction motor is connected to the third suction relay 126, and a capacitor is connected between the third lead (yellow lead) and the fourth lead (blue lead) of the first suction motor; a capacitor is connected between the third lead (yellow lead) and the fourth lead (blue lead) of the second suction motor. By plugging the lead on the first suction switching interface 162 and not plugging the lead on the second suction switching interface 164, it is ensured that the first suction switching interface 162 is short-circuited and the second suction switching interface 164 is disconnected. When the processor 140 controls the first suction relay 122 to be closed (for example, when the user selects the fast gear by operating the button, the processor 140 controls accordingly), the first output interface of the first suction relay 122 outputs the fourth driving signal, so that the first suction motor can work at the first rotating speed (fast). At the same time, the processor 140 also controls the third suction relay 126 to be closed (for example, when the user selects the slow gear by operating the button, the processor 140 controls accordingly), the third output interface of the third suction relay 126 outputs the fifth driving signal, so that the second suction motor can work at the third rotating speed (slow), realizing the double-motor single-speed function, and further improving the versatility of the range hood control circuit and diversifying the functions of the range hood control board.

[0075] It should be noted that the third suction motor can also be a single-motor 2-speed 5-wire motor, and the specific working process can refer to the example of the single-motor 2-speed 4-wire motor described above, which will not be repeated here.

[0076] In one embodiment, as Figure 3 In one embodiment, as

[0077] Specifically, by plugging the loudspeaker on the loudspeaker interface circuit 170, connecting the control end of the loudspeaker interface circuit 170 to the processor 140, and connecting the power supply end of the loudspeaker interface circuit 170 to the output end of the power conversion circuit 130, the processor 140 can be used for voice control, such as voice broadcast switching speed or gear, etc. By plugging the indicator light (which can be an LED light) into the indicator light interface circuit 180, connecting the control end of the indicator light interface circuit 180 to the processor 140, and connecting the power supply end of the indicator light interface circuit 180 to the output end of the power conversion circuit 130, the working state of the range hood control circuit can be indicated by the indicator light. By connecting the display screen (which can be a touch display screen) to the display screen interface circuit 190, connecting the control end of the display screen interface circuit 190 to the processor 140, and connecting the power supply end of the display screen interface circuit 190 to the output end of the power conversion circuit 130, the user can view the current range hood control state in real time through the display screen, and the user can also control the display screen to control the extraction speed or the lifting door, thereby improving the intelligence of the range hood control.

[0078] In one embodiment, the range hood control circuit further comprises a relay drive circuit; the first input end and the second input end of the relay drive circuit are connected to the processor respectively, the first output end of the relay drive circuit is connected to the lifting door relay assembly, and the second output end of the relay drive circuit is connected to the extraction relay assembly.

[0079] Among them, the relay drive circuit can include a ULN2003A type drive chip. As shown in Figure 4 The ULN2003A type drive chip includes 7 input pins and corresponding 7 output pins, such as 6 input pins connected to the processor respectively, and corresponding 6 output pins connected to the Nanjing lifting door relay assembly and the extraction relay assembly respectively.

[0080] In one embodiment, as shown in Figure 5 A range hood control board is also provided, which includes a circuit substrate 10, and a circuit layer is arranged on the circuit substrate 10; the circuit layer is provided with the range hood control circuit of any one of the above.

[0081] Among them, the circuit substrate 10 can be a double-layer PCB circuit board. The circuit layer is covered with a copper foil, and the circuit wiring layer is formed by etching the copper foil, and the range hood control circuit is formed by arranging corresponding circuit elements on the circuit wiring layer.

[0082] Specifically, the lifting door output end of the lifting door relay assembly 110 is connected with the lifting door motor; the exhaust output end of the exhaust relay assembly 120 is connected with the exhaust motor; the output end of the power conversion circuit 130 is connected with the lifting door input end of the lifting door relay assembly 110 and the exhaust input end of the exhaust relay assembly 120 respectively; the processor 140 is connected with the power conversion circuit 130, the lifting door control end of the lifting door relay assembly 110 and the exhaust control end of the exhaust relay assembly 120 respectively; the first end group of the lifting door switching end assembly 150 is used for connecting the ground wire, and the second end group of the lifting door switching end assembly 150 is connected with the processor 140 respectively; the first end group of the exhaust switching end assembly 160 is used for connecting the ground wire, and the second end group of the exhaust switching end assembly 160 is connected with the processor 140 respectively, so that the user can control the lifting door switching end assembly 150 (such as short-circuiting the corresponding end group or disconnecting the corresponding end group) to switch the lifting door motor current, and then switch the application on different types of lifting doors (such as small glass lifting doors, medium glass lifting doors and large glass lifting doors); the user can control the exhaust switching end assembly 160 (such as short-circuiting the corresponding end group or disconnecting the corresponding end group) to switch the exhaust motor speed and / or the exhaust motor type, and then switch the application on different types of motors (such as single motor 2-speed, single motor 3-speed and double motor single-speed), thereby diversifying the function of the range hood control panel, improving the intelligent degree, facilitating the user to replace the control panel, and improving the universality of the range hood control panel.

[0083] In one embodiment, as shown in Figure 6 a range hood control system is provided, including a range hood, the range hood including an exhaust motor and a lifting door motor, further including a display screen 20, a loudspeaker 30, an indicator lamp 40 and the above-mentioned range hood control panel; the display screen 20, the loudspeaker 30 and the indicator lamp 40 are electrically connected with the range hood control panel respectively; the range hood control panel is electrically connected with the exhaust motor and / or the lifting door motor respectively; the loudspeaker 30, the indicator lamp 40 and the range hood control panel are arranged in the outer shell of the range hood respectively; the display screen 20 is adhered on the outer shell of the range hood.

[0084] Among them, the back of the display screen 20 can be adhered on the outer shell of the range hood through double-sided adhesive, for example, the back of the display screen 20 can be adhered on the glass panel of the front part of the range hood through double-sided adhesive, thereby facilitating installation and facilitating user operation and viewing of the display screen 20.

[0085] Specifically, the user can switch the motor current of the overhead door by manipulating the overhead door switching terminal assembly (such as short-circuiting the corresponding terminal group or disconnecting the corresponding terminal group), thereby switching the application on different types of overhead doors (such as small glass overhead doors, medium glass overhead doors, and large glass overhead doors); the user can switch the motor speed and / or the type of exhaust motor by manipulating the exhaust switching terminal assembly (such as short-circuiting the corresponding terminal group or disconnecting the corresponding terminal group), thereby switching the application on different types of motors (such as single-motor 2-speed, single-motor 3-speed, and double-motor single-speed), thereby diversifying the functions of the range hood control panel. In addition, by setting the display screen 20 panel back with an adhesive structure, the adhesive is installed on the glass panel, which is easy to install, stable, and convenient for maintenance; by setting the speaker 30, voice control can be achieved, improving the intelligent level, making it easy for users to replace the control panel, and improving the versatility of the range hood control panel.

[0086] In one embodiment, the display screen 20 is provided with a hook for clamping with the outer shell of the range hood.

[0087] Specifically, the display screen 20 can be clamped to the outer shell of the range hood (such as the top of the glass panel of the front of the range hood), and the display screen 20 panel back is provided with an adhesive structure and is installed on the glass panel, which is easy to install, stable, and convenient for maintenance.

[0088] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0089] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A range hood control circuit, characterized in that, include: A lifting door relay assembly, comprising a lifting door control terminal, a lifting door output terminal, and a lifting door input terminal; the lifting door output terminal is used to connect to the lifting door motor. A ventilation relay assembly, comprising a ventilation control terminal, a ventilation output terminal, and a ventilation input terminal; the ventilation output terminal is used to connect to a ventilation motor. A power conversion circuit, the output of which is connected to the input of the lifting door and the exhaust input, respectively. The processor is connected to the power conversion circuit, the lifting door control terminal, and the ventilation control terminal, respectively. A lifting door switching terminal assembly is used to switch the current of the lifting door motor; the first terminal group of the lifting door switching terminal assembly is used as a grounding wire, and the second terminal group of the lifting door switching terminal assembly is respectively connected to the processor. A ventilation switching terminal assembly is used to switch the speed and type of the ventilation motor; the first terminal group of the ventilation switching terminal assembly is used as a grounding wire, and the second terminal group of the ventilation switching terminal assembly is connected to the processor respectively. The exhaust relay assembly includes a first exhaust relay, a second exhaust relay, and a third exhaust relay. The first exhaust control terminal of the first exhaust relay is connected to the processor, the first exhaust output terminal of the first exhaust relay is connected to a first output interface, and the first exhaust input terminal of the first exhaust relay is connected to the output terminal of the power conversion circuit. The second exhaust control terminal of the second exhaust relay is connected to the processor, the second exhaust output terminal of the second exhaust relay is connected to a second output interface, and the second exhaust input terminal of the second exhaust relay is connected to the output terminal of the power conversion circuit. The third exhaust control terminal of the third exhaust relay is connected to the processor, the third exhaust output terminal of the third exhaust relay is connected to a third output interface, and the third exhaust input terminal of the third exhaust relay is connected to the output terminal of the power conversion circuit. The first output interface, the second output interface, and the third output interface are respectively used to connect to the exhaust motor. The ventilation switching terminal component includes a first ventilation switching interface and a second ventilation switching interface; the first end of the first ventilation switching interface is grounded, and the second end of the first ventilation switching interface is connected to the processor; the first end of the second ventilation switching interface is grounded, and the second end of the second ventilation switching interface is connected to the processor. When the first ventilation switching interface is short-circuited and the second ventilation switching interface is open, the processor controls the first ventilation relay to close and the third ventilation relay to close, so that the first output interface outputs a fourth drive signal and the third output interface outputs a fifth drive signal; the fourth drive signal is used to drive the first ventilation motor to operate at a first speed; the fifth drive signal is used to drive the second ventilation motor to operate at a third speed. When the first ventilation switching interface is disconnected and the second ventilation switching interface is short-circuited, the processor controls the first ventilation relay to close or the third ventilation relay to close, so that the first output interface outputs a first drive signal or the third output interface outputs a third drive signal; the first drive signal is used to drive the third ventilation motor to work at a first speed. When the first exhaust switching interface is disconnected and the second exhaust switching interface is disconnected, the processor controls the first exhaust relay to close, the second exhaust relay to close, or the third exhaust relay to close, so that the first output interface outputs a first drive signal, the second output interface outputs a second drive signal, or the third output interface outputs a third drive signal; the first drive signal is used to drive the third exhaust motor to operate at a first speed; the second drive signal is used to drive the second exhaust motor to operate at a second speed; the third drive signal is used to drive the third exhaust motor to operate at a third speed; wherein the first speed is greater than the second speed, and the second speed is greater than the third speed.

2. The range hood control circuit according to claim 1, characterized in that, The lifting door relay assembly includes a first lifting door relay and a second lifting door relay; The first lifting door relay's first lifting door control terminal is connected to the processor, the first lifting door output terminal of the first lifting door relay is used to connect to the first motor socket, and the first lifting door input terminal of the first lifting door relay is connected to the output terminal of the power conversion circuit; the second lifting door relay's second lifting door control terminal is connected to the processor, the second lifting door output terminal of the second lifting door relay is used to connect to the first motor socket, and the second lifting door input terminal of the second lifting door relay is connected to the output terminal of the power conversion circuit; wherein, the first motor socket includes a first-size motor socket and / or a second-size motor socket.

3. The range hood control circuit according to claim 2, characterized in that, The lifting door switching terminal assembly includes a first lifting door switching interface and a second lifting door switching interface; the first end of the first lifting door switching interface is grounded, and the second end of the first lifting door switching interface is connected to the processor; the first end of the second lifting door switching interface is grounded, and the second end of the second lifting door switching interface is connected to the processor. When the first lifting door switching interface is short-circuited and the second lifting door switching interface is disconnected, the processor controls the first lifting door relay to close and the second lifting door relay to open, so that the first motor socket outputs the first drive current; When the first lifting door switching interface is disconnected and the second lifting door switching interface is short-circuited, the processor controls the first lifting door relay to disconnect and the second lifting door relay to close, so that the first motor socket outputs a second drive current; when the first lifting door switching interface is short-circuited and the second lifting door switching interface is short-circuited, the processor controls the first lifting door relay to close and the second lifting door relay to close, so that the first motor socket outputs a third drive current. The first driving current is less than the third driving current, and the third driving current is less than the second driving current.

4. The range hood control circuit according to any one of claims 1-3, characterized in that, It also includes a speaker interface circuit for connecting a speaker, an indicator light interface circuit for connecting an indicator light, and a display screen interface circuit for connecting a display screen; the control terminal of the speaker interface circuit is connected to the processor, and the power supply terminal of the speaker interface circuit is connected to the output terminal of the power conversion circuit; the control terminal of the indicator light interface circuit is connected to the processor, and the power supply terminal of the indicator light interface circuit is connected to the output terminal of the power conversion circuit; the control terminal of the display screen interface circuit is connected to the processor, and the power supply terminal of the display screen interface circuit is connected to the output terminal of the power conversion circuit.

5. The range hood control circuit according to claim 4, characterized in that, It also includes a relay drive circuit; the first input terminal and the second input terminal of the relay drive circuit are respectively connected to the processor, the first output terminal of the relay drive circuit is connected to the lifting door relay assembly, and the second output terminal of the relay drive circuit is connected to the exhaust relay assembly.

6. A range hood control board, characterized in that, It includes a circuit board, on which a circuit layer is provided; the circuit layer is provided with the range hood control circuit according to any one of claims 1 to 5.

7. A range hood control system, comprising a range hood, said range hood including an exhaust motor and a door lift motor, characterized in that, It also includes a display screen, a speaker, an indicator light, and the range hood control board as described in claim 6; the display screen, the speaker, and the indicator light are electrically connected to the range hood control board; the range hood control board is electrically connected to the exhaust motor and the lifting door motor; the speaker, the indicator light, and the range hood control board are respectively disposed within the outer casing of the range hood; the display screen is adhered to the outer casing of the range hood.

8. The range hood control system according to claim 7, characterized in that, The display screen is equipped with a latch for engaging with the outer casing of the range hood.

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