Oil smoke suction system

Abstract

The utility model discloses a cooking fume suction system which comprises a range hood and an air valve mechanism, and the range hood comprises a range hood main control board; the range hood main control board comprises a control module, a range hood driving circuit module and an air valve driving circuit module; the control module is electrically connected with the range hood driving circuit module and the air valve driving circuit module respectively; the range hood driving circuit module is electrically connected with a range hood load in the range hood; and the air valve driving circuit module is electrically connected with an air valve load in the air valve mechanism. According to the technical scheme, the air valve can be prevented from being opened and closed by mistake, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a fume extraction system. Background Art

[0002] Modern residential buildings basically use a public flue model to collect the fumes produced by the kitchens of residents on each floor, and discharge the fumes to the roof through the public flue. Therefore, the kitchens on each floor are basically equipped with dampers to control the emission of fumes at the public flue outlets. Currently, electric dampers are commonly used.

[0003] In the prior art, most electric dampers collect the load current value of the range hood through an internal current collection element, and control the opening and closing state of the valve according to the load current value of the range hood, thereby cooperating with the range hood to exhaust smoke. For example, when the load current value of the range hood exceeds the preset current threshold, the valve is controlled to open, otherwise the valve is controlled to close / close. However, research has found that existing products are prone to accidental opening and closing of dampers, affecting the user experience. Utility Model Content

[0004] The utility model provides an oil fume suction system to avoid the phenomenon of mistaken opening and closing of the air valve, thereby improving the user experience.

[0005] The oil fume extraction system provided by the utility model comprises an oil hood and an air valve mechanism, wherein the oil hood comprises an oil hood main control panel;

[0006] The range hood main control board includes a control module, a range hood drive circuit module and a damper drive circuit module; the control module is electrically connected to the range hood drive circuit module and the damper drive circuit module respectively; the range hood drive circuit module is electrically connected to the range hood load in the range hood; the damper drive circuit module is electrically connected to the damper load in the damper mechanism.

[0007] Optionally, the range hood further comprises a human-machine interaction panel; the human-machine interaction panel is communicatively connected with the control module.

[0008] Optionally, the air valve driving circuit module includes an exhaust valve driving circuit unit and an inlet valve driving circuit unit;

[0009] The exhaust valve driving circuit unit is used to be electrically connected to the exhaust valve; the inlet valve driving circuit unit is used to be electrically connected to the inlet valve;

[0010] The air valve mechanism at least includes an exhaust valve.

[0011] Optionally, the range hood load includes a fan, the range hood drive circuit module includes a fan drive circuit unit, and the fan drive circuit unit is electrically connected to the fan.

[0012] Optionally, the range hood load further includes a lighting device; the range hood drive circuit module further includes a lighting drive circuit unit, and the lighting drive circuit unit is electrically connected to the lighting device; and / or,

[0013] The range hood load further includes a windshield driving device, and the range hood driving circuit module further includes a windshield driving circuit unit, and the windshield driving circuit unit is electrically connected to the windshield driving device.

[0014] Optionally, the windshield driving device includes a push rod motor, and the push rod motor is connected to the windshield.

[0015] Optionally, the push rod motor is a DC motor;

[0016] The windshield driving circuit unit includes a first load current acquisition circuit, the control module includes a first load current receiving end, and the first load current acquisition circuit is electrically connected to the first load current receiving end.

[0017] Optionally, the damper load includes a damper motor, and the damper motor is connected to the damper valve;

[0018] The air valve motor is a DC motor; the air valve drive circuit module includes a second load current acquisition circuit, the control module includes a second load current receiving end, and the second load current acquisition circuit is electrically connected to the second load current receiving end.

[0019] Optionally, the range hood main control board also includes a power module; the power module is electrically connected to the external power supply, the control module, the range hood drive circuit module, the air valve drive circuit module, the range hood load and the air valve load respectively.

[0020] Optionally, the power module includes a power distribution unit and a power conversion unit; the power distribution unit is electrically connected to the external power supply, the power conversion unit and the first type of load respectively; the power conversion unit is used to convert the AC power supply into a DC power supply, and is electrically connected to the control module, the range hood drive circuit module, the air valve drive circuit module and the second type of load respectively;

[0021] Among them, the first type of loads are the loads whose working power supply is AC among the range hood loads and the damper loads; the second type of loads are the loads whose working power supply is DC among the range hood loads and the damper loads.

[0022] The technical solution of the embodiment of the utility model is to set a range hood main control board including a control module, a range hood drive circuit module and a damper drive circuit module, so that the control module is electrically connected to the range hood drive circuit module and the damper drive circuit module respectively, and the range hood drive circuit module is electrically connected to the range hood load in the range hood, and the damper drive circuit module is electrically connected to the damper load in the damper mechanism, so that the control module can control the working state of the range hood load through the range hood drive circuit module, and can also control the working state of the damper load through the damper drive circuit module, thereby facilitating the integrated and interlocking control of the range hood load and the damper load through the control module, and interlockingly controlling the range hood load when controlling the range hood load to perform the smoking function. The air valve load is started to open the air valve to achieve smoke exhaust, and when the range hood load is controlled to stop performing the smoking function, the air valve load can be controlled to close in linkage to close the air valve, stop smoke exhaust and prevent oil smoke from the public flue from flowing back into the kitchen, thereby achieving the effect of accurately controlling the opening and closing state of the air valve of the air valve mechanism according to the actual smoking condition of the range hood, avoiding the phenomenon of accidental opening and closing of the air valve; in addition, the present embodiment integrates the air valve drive circuit module and the range hood drive circuit module on the range hood main control board, and electrically connects both to the control module, thereby improving the integration of the range hood system, reducing the number of circuit boards and the number of chips with data processing functions, and reducing costs.

[0023] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a structural schematic diagram of a fume extraction system provided by the present utility model;

[0026] Figure 2 This is a schematic diagram of the circuit principle of a fume extraction system provided by an embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the circuit principle of another oil fume extraction system provided by an embodiment of the utility model;

[0028] Figure 4This is a schematic diagram of the circuit principle of another oil fume extraction system provided by an embodiment of the utility model;

[0029] Figure 5 This is a schematic diagram of the circuit principle of another oil fume extraction system provided by an embodiment of the utility model;

[0030] Figure 6 This is a schematic diagram of the circuit principle of another range fumes extraction system provided by an embodiment of the utility model.

[0031] Reference numerals:

[0032] 100-Fume extraction system;

[0033] 1- Range hood;

[0034] 11-main control board of range hood; 111-control module; A-first load current receiving end; B-second load current receiving end; 112-range hood drive circuit module; 1121-fan drive circuit unit; 1122-lighting drive circuit unit; 1123-wind shield drive circuit unit; 1120-first load current acquisition circuit; 113-air valve drive circuit module; 1131-exhaust valve drive circuit unit; 1132-intake valve drive circuit unit; 1130-second load current acquisition circuit; 114-power module; 1141-power distribution unit; 1142-power conversion unit;

[0035] 12-hood load; 121-fan; 122-lighting device; 123-windshield drive device;

[0036] 13-Human-computer interaction panel;

[0037] 14- Wind deflector;

[0038] 15- Power cord;

[0039] 2-air valve mechanism; 21-exhaust valve; 22-inlet valve;

[0040] 3- Power socket;

[0041] 200 - External power supply. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0043] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0044] First of all, it should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Inside" and "outside" and similar words are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. In addition, the shapes and sizes of the components in the drawings do not reflect the true proportions, and the purpose is only to illustrate the content of the present invention.

[0045] Figure 1 This is a structural schematic diagram of a fume extraction system provided by the present utility model. Figure 2 This is a circuit schematic diagram of a fume extraction system provided by the utility model, combined with Figure 1 and Figure 2 As shown, the range hood system 100 provided by the utility model includes a range hood 1 and a damper mechanism 2, the range hood 1 includes a range hood main control board 11; the range hood main control board 11 includes a control module 111, a range hood drive circuit module 112 and a damper drive circuit module 113; the control module 111 is electrically connected to the range hood drive circuit module 112 and the damper drive circuit module 113 respectively; the range hood drive circuit module 112 is electrically connected to the range hood load 12 in the range hood; the damper drive circuit module 113 is electrically connected to the damper load in the damper mechanism 2.

[0046] The air valve mechanism is used to assist the range hood to exhaust the oil smoke generated during cooking to the outside. According to the installation position and function of the air valve mechanism, the air valve mechanism can be divided into an exhaust valve and an inlet valve. In this embodiment, the air valve mechanism in the range hood system can be selected to include at least an exhaust valve to ensure that the exhaust function of the range hood system ( Figure 1 The air valve mechanism 2 including the exhaust valve 21 and the air inlet valve 22 is taken as an example for illustration).

[0047] Reference Figure 1 The exhaust valve 21 is installed at the exhaust port of the public flue. Opening the exhaust valve 21 can allow the oil smoke sucked by the range hood 1 to be discharged into the public flue and then discharged to the outside; the air inlet valve 22 is installed in the outer wall. Opening the air inlet valve 22 can allow fresh air from the outside to enter the room, thereby enhancing the fluidity of the indoor air and improving the exhaust effect.

[0048] It should be noted that in an actual range fumes extraction system, whether to set an air inlet valve can be selected according to actual needs, and the embodiment of the utility model does not limit this. For example, for a kitchen environment with poor ventilation, it is preferred that the air valve mechanism in the range fumes extraction system includes both an air inlet valve and an exhaust valve.

[0049] The damper load refers to the components in the damper mechanism that need to consume electrical energy to perform the related functions of the damper mechanism. Optionally, the damper mechanism (whether it is an exhaust valve or an inlet valve) includes a damper motor and a damper valve. The damper motor is connected to the damper valve. By controlling the rotation of the damper motor, the damper valve can be driven to move so that the damper valve is opened or closed to assist the range hood in exhausting smoke. At this time, the damper load includes the damper motor. In other words, the damper motor is the damper load in the damper mechanism.

[0050] Similarly, the range hood load refers to the components of the range hood that need to consume electrical energy to perform the relevant functions of the range hood. Figure 1 The range hood 1 includes a fan 121. The range hood 1 realizes the smoke extraction function by controlling the rotation of the fan 121. Therefore, the fan 121 is one of the range hood loads 12 of the range hood. The range hood may also have other range hood loads to perform other functions, which is not limited in the embodiment of the utility model.

[0051] Further, such as Figure 2 As shown, in this embodiment, the range hood main control board 11 includes a control module 111, a range hood drive circuit module 112 and a damper drive circuit module 113, the control module 111 is electrically connected to the range hood drive circuit module 112 and the damper drive circuit module 113 respectively, the range hood drive circuit module 112 is electrically connected to the range hood load 12 in the range hood, and the damper drive circuit module 113 is electrically connected to the damper load in the damper mechanism 2.

[0052] By adopting the above scheme, the control module 111 can control the working state of the range hood load 12 (such as on / off) through the range hood drive circuit module 112, and can also control the working state of the damper load through the air valve drive circuit module 113, which is conducive to realizing integrated and interlocking control of the range hood load 12 and the damper load through the control module 111. When the range hood load 12 is controlled to perform the smoking function, the damper load is controlled to start in an interlocking manner so that the damper valve is opened to achieve smoke exhaust. When the range hood load 12 is controlled to stop performing the smoking function, the damper load can be controlled to close in an interlocking manner so that the damper valve is closed to stop smoke exhaust and prevent the oil smoke from the public flue from flowing back into the kitchen, thereby achieving the effect of accurately controlling the opening and closing state of the damper valve of the damper mechanism 2 according to the actual smoking condition of the range hood, avoiding the phenomenon of accidental opening and closing of the damper valve. In addition, this embodiment integrates the air valve drive circuit module 113 and the range hood drive circuit module 112 on the range hood main control board 11, and makes both of them electrically connected to the control module 111, thereby improving the integration of the range hood system, reducing the number of circuit boards and the number of chips with data processing functions, and reducing costs.

[0053] Further, such as Figure 1 and Figure 2 As shown, the range hood 1 optionally further comprises a human-machine interaction panel 13; the human-machine interaction panel 13 is communicatively connected with the control module 111. Exemplarily, the human-machine interaction panel 13 and the control module 111 can communicate via IIC or UART to achieve data transmission.

[0054] Among them, the human-machine interaction panel is a medium for users to control the operating status of the range hood. Specifically, the human-machine interaction panel usually has buttons / icons with multiple functions, which can be used as a control panel for users to operate. Since the human-machine interaction panel is connected to the control module in communication, after the user triggers the button / icon representing a certain function on the human-machine interaction panel, the human-machine interaction panel can recognize the user's triggering action, and convert the recognized triggering action into a control instruction (data) that can be recognized by the control module and send / transmit it to the control module, so that the control module responds to the user's triggering action and controls the corresponding load to execute the function triggered by the user.

[0055] Specifically, in the present embodiment, the control module can perform integrated and interlocking control over the range hood load and the air valve load according to the control instructions sent by the human-computer interaction panel, thereby achieving the effect of accurately controlling the opening and closing state of the air valve of the air valve mechanism according to the actual smoking conditions of the range hood, thereby avoiding the phenomenon of accidental opening and closing of the air valve.

[0056] Exemplary, combined Figure 2As shown, when the user triggers the button / icon representing the air volume gear of the range hood on the human-computer interaction panel 13, the human-computer interaction panel 13 can send a control instruction for the range hood to start smoking to the control module 111, and the control module 111 can drive the fan to start through the range hood drive circuit module 112 according to the instruction to perform the smoking function, and can also control the air valve load to start through the air valve drive circuit module 113 according to the instruction, so that the air valve valve is opened to achieve smoke exhaust; when the user triggers the button / icon for the same air volume gear of the range hood on the human-computer interaction panel 13 again or triggers the power button, the human-computer interaction panel 13 can send a control instruction for the range hood to stop smoking to the control module 111, and the control module 111 can control the fan to turn off through the range hood drive circuit module 112 according to the instruction to stop smoking, and can also control the air valve load to turn off through the air valve drive circuit module 113 according to the instruction, so that the air valve valve is closed, smoke exhaust is stopped and oil smoke from the public flue is prevented from flowing back into the kitchen.

[0057] Figure 3 This is a schematic diagram of the circuit principle of another oil fume suction system provided by the embodiment of the utility model. On the basis of the above embodiment, the circuit structure of the oil fume suction system is further refined. Figure 3 As shown, optionally, the air valve driving circuit module 113 includes an exhaust valve driving circuit unit 1131 and an air inlet valve driving circuit unit 1132; the exhaust valve driving circuit unit 1131 is used to be electrically connected to the exhaust valve 21; and the air inlet valve driving circuit unit 1132 is used to be electrically connected to the air inlet valve 22.

[0058] First, it should be noted that in this embodiment, no matter the air valve mechanism 2 includes only the exhaust valve 21, or the air valve mechanism 2 includes both the exhaust valve 21 and the inlet valve 22, the air valve drive circuit module 113 includes both the exhaust valve drive circuit unit 1131 and the inlet valve drive circuit unit 1132. With such a configuration, no matter how the air valve mechanism 2 is configured, the corresponding air valve mechanism 2 can be controlled by the air valve drive circuit module 113, which has higher universality and practicality.

[0059] For example, Figure 3 As shown, when the air valve mechanism 2 includes an exhaust valve 21 and an air inlet valve 22 at the same time, the exhaust valve driving circuit unit 1131 is electrically connected to the exhaust valve 21 (specifically, it is electrically connected to the air valve motor of the exhaust valve), and the air inlet valve driving circuit unit 1132 is electrically connected to the air inlet valve 22 (specifically, it is electrically connected to the air valve motor of the air inlet valve).

[0060] Figure 4 FIG. 1 is a schematic diagram of the circuit principle of another oil fume extraction system provided by an embodiment of the utility model. Figure 4As shown, in other embodiments, when the air valve mechanism 2 only includes the exhaust valve 21, the exhaust valve driving circuit unit 1131 is electrically connected to the exhaust valve 21, and the air inlet valve driving circuit unit 1132 is in a suspended state.

[0061] Combination Figure 1 and Figure 3 As shown, the range hood load 12 includes a fan 121, and accordingly, the optional range hood drive circuit module 112 includes a fan drive circuit unit 1121, and the fan drive circuit unit 1121 is electrically connected to the fan 121. In addition, the fan drive circuit unit 1121 is also electrically connected to the control module 111, and the control module 111 can control the operating state of the fan 21 through the fan drive circuit unit 1121.

[0062] In addition, combined Figure 1 and Figure 3 As shown, optionally, the range hood load 12 also includes a lighting device 122 and a windshield drive device 123; accordingly, the range hood drive circuit module 112 also includes a lighting drive circuit unit 1122 and a windshield drive circuit unit 1123, the lighting drive circuit unit 1122 is electrically connected to the lighting device 122, and the windshield drive circuit unit 1123 is electrically connected to the windshield drive device 123.

[0063] The lighting device is used to improve the lighting conditions during the cooking process. Exemplarily, the lighting device can be an LED lamp.

[0064] The windshield driving device is used to drive the windshield, and is usually arranged in a side-suction range hood. Figure 1 As shown, the front plate of the smoke collecting chamber of the side-suction range hood is provided with a windshield 14, and the windshield driving device 123 is connected to the windshield 14. When the range hood performs the smoking function, the windshield driving device 123 can drive the windshield 14 to move outward to open the windshield. When the range hood stops performing the smoking function, the windshield driving device 123 can drive the windshield 14 to move inward to close the windshield.

[0065] Correspondingly, the range hood driving circuit module 112 is configured with a lighting driving circuit unit 1122 and a windshield driving circuit unit 1123. The lighting driving circuit unit 1122 is electrically connected to the control module 111 and the lighting device 122, respectively. The windshield driving circuit unit 1123 is electrically connected to the control module 111 and the windshield driving device 123, respectively. The control module 111 can control the working state of the lighting device 122 through the lighting driving circuit unit 1122, and control the working state of the windshield driving device 123 through the windshield driving circuit unit 1123.

[0066] It should be noted that Figure 3Only an example is taken for illustrating that the range hood load 12 of the range hood includes, in addition to the fan 121, a lighting device 122 and a windshield driving device 123. In other embodiments, in addition to the fan 121, the range hood load 12 may include one of the lighting device 122 and the windshield driving device 123, rather than having both the lighting device 122 and the windshield driving device 123. When the range hood load 12 includes the lighting device 122, the range hood driving circuit module 112 includes a lighting driving circuit unit 1122, and the lighting driving circuit unit 1122 is electrically connected to the lighting device 122. When the range hood load 12 includes the windshield driving device 123, the range hood driving circuit module 112 includes a windshield driving circuit unit 1123, and the windshield driving circuit unit 1123 is electrically connected to the windshield driving device 123. Of course, the lighting device 122 and the windshield drive device 123 are merely examples of the range hood load 12 other than the fan 121, and are not limiting. The range hood may include other types of range hood loads, and the embodiments of the utility model are not limited to this. Regardless of the type of range hood load, it is sufficient as long as a corresponding drive circuit for controlling the working state of the range hood load is configured on the main control board.

[0067] As a feasible implementation method, refer to Figure 1 The optional windshield driving device 123 includes a push rod motor, and the push rod motor is connected to the windshield 14. In this way, the opening and closing state of the windshield 14 can be controlled by controlling the reciprocating motion of the push rod motor.

[0068] Exemplarily, the push rod motor may be a DC motor or an AC motor.

[0069] Figure 5 FIG. 1 is a schematic diagram of the circuit principle of another oil fume extraction system provided by an embodiment of the utility model. Figure 5 As shown, when the push rod motor is a DC motor, optionally, the windshield driving circuit unit 1123 includes a first load current acquisition circuit 1120, the control module 111 includes a first load current receiving terminal A, and the first load current acquisition circuit 1120 is electrically connected to the first load current receiving terminal A.

[0070] Among them, the first load current acquisition circuit 1120 is used to collect the working current of the push rod motor during operation. When the push rod motor is a DC motor, this embodiment includes a first load current acquisition circuit 1120 by setting the windshield drive circuit unit 1123, and the first load current acquisition circuit 1120 is electrically connected to the first load current receiving terminal A of the control module 111. The collected working current of the push rod motor can be fed back to the control module 111 through the first load current acquisition circuit 1120, which is convenient for real-time monitoring of the working state of the push rod motor to ensure the normal operation of the push rod motor. When the push rod motor fails (such as an overcurrent fault or a stall fault), the corresponding fault information can be sent to the human-computer interaction panel 13 in time, and the motor fault can be displayed through the human-computer interaction panel 13 to remind the user to repair it in time, which is also helpful for maintenance personnel to identify the faulty components and fault types, and improve maintenance efficiency.

[0071] In addition, as mentioned above, the damper load includes a damper motor, which is connected to the damper valve. The damper motor can be a DC motor or an AC motor.

[0072] like Figure 5 As shown, when the damper motor is a DC motor, optionally, the damper drive circuit module 113 includes a second load current acquisition circuit 1130, the control module 111 includes a second load current receiving terminal B, and the second load current acquisition circuit 1130 is electrically connected to the second load current receiving terminal B.

[0073] The second load current acquisition circuit 1130 is used to acquire the working current of the damper motor during operation. Figure 5 As shown, optionally, the exhaust valve driving circuit unit 1131 and the inlet valve driving circuit unit 1132 are both provided with a second load current acquisition circuit 1130, so that the second load current acquisition circuit 1130 in the exhaust valve driving circuit unit 1131 can acquire the working current of the air valve motor of the exhaust valve 21, and the second load current acquisition circuit 1130 in the inlet valve driving circuit unit 1132 can acquire the working current of the air valve motor of the inlet valve 22. Further, the collected working current of the air valve motor can be fed back to the control module 111 through the second load current acquisition circuit 1130, so as to facilitate real-time monitoring of the working state of each air valve motor and ensure the normal operation of the air valve motor. When the air valve motor fails (such as overcurrent failure or stall failure), the corresponding fault information can be sent to the human-machine interaction panel 13 in time, and the motor fault can be displayed through the human-machine interaction panel 13, so as to remind the user to repair in time, and it is also helpful for the maintenance personnel to identify the faulty component and the fault type, so as to improve the maintenance efficiency.

[0074] Reference Figure 5Optionally, the range hood main control board 11 further includes a power module 114; the power module 114 is electrically connected to the external power supply 200, the control module 111, the range hood drive circuit module 112, the air valve drive circuit module 113, the range hood load 12 and the air valve load.

[0075] like Figure 1 As shown, the range hood 1 includes a power cord 15. When the power cord 15 is plugged into the power socket 3, the power module 114 can be electrically connected to the external power source 200 (i.e., the power distribution network). Furthermore, the power module 114 can provide working power to the control module 111, the range hood drive circuit module 112, the damper drive circuit module 113, the range hood load 12, and the damper load. It should be noted that Figure 5 Only the electrical connection relationship between the power module 114 and the control module 111 is illustrated, and the electrical connection relationship between the control module 111 and the range hood drive circuit module 112, the damper drive circuit module 113, the range hood load 12 and the damper load is not shown.

[0076] Figure 6 FIG. 1 is a schematic diagram of the circuit principle of another oil fume extraction system provided by an embodiment of the utility model. Figure 6 As shown, optionally, the power supply module 114 includes a power distribution unit 1141 and a power conversion unit 1142; the power distribution unit 1141 is electrically connected to the external power supply 200, the power conversion unit 1142 and the first type of load respectively; the power conversion unit 1142 is used to convert AC power into DC power, and is electrically connected to the control module 111, the range hood drive circuit module 112, the air valve drive circuit module 113 and the second type of load respectively.

[0077] Among them, the first type of loads are the loads whose working power supply is AC among the range hood loads and the damper loads; the second type of loads are the loads whose working power supply is DC among the range hood loads and the damper loads.

[0078] Specifically, the AC power provided by the external power supply 200 can be distributed through the power distribution unit 1141, with a portion distributed to the power conversion unit 1142 and a portion distributed to the first type of load whose working power supply is AC power, such as the fan 121; the power conversion unit 1142 is used to convert the AC power into a DC power supply to power the control module 111, the smoke machine drive circuit module 112 and the second type of load, which has a working power supply of DC power. Exemplarily, the second type of load may include the lighting device 122, the windshield drive device 123 and the damper motor of the damper mechanism 2. In some embodiments, when the windshield drive device 123 and / or the damper motor adopts an AC motor, the windshield drive device 123 and / or the damper motor are the first type of loads, and need to be powered by the power distribution unit 1141.

[0079] Finally, refer to Figure 6 It should be noted that the embodiments of the utility model do not limit the specific circuit structures of the above-mentioned fan drive circuit unit 1121, lighting drive circuit unit 1122, wind shield drive circuit unit 1123, exhaust valve drive circuit unit 1131, air inlet valve drive circuit unit 1132, power distribution unit 1141 and power conversion unit 1142, and those skilled in the art can design them by themselves.

[0080] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A range hood extraction system, comprising a range hood and a damper mechanism, characterized in that: The range hood comprises a range hood main control board; The range hood main control board includes a control module, a range hood drive circuit module and a damper drive circuit module; the control module is electrically connected to the range hood drive circuit module and the damper drive circuit module respectively; the range hood drive circuit module is electrically connected to the range hood load in the range hood; the damper drive circuit module is electrically connected to the damper load in the damper mechanism.

2. The oil fume extraction system according to claim 1, characterized in that: The range hood further comprises a human-machine interaction panel; the human-machine interaction panel is communicatively connected with the control module.

3. The oil fume extraction system according to claim 1, characterized in that: The air valve driving circuit module includes an exhaust valve driving circuit unit and an inlet valve driving circuit unit; The exhaust valve driving circuit unit is used to be electrically connected to the exhaust valve; the inlet valve driving circuit unit is used to be electrically connected to the inlet valve; The air valve mechanism at least includes the exhaust valve.

4. The oil fume extraction system according to claim 1, characterized in that: The range hood load includes a fan, and the range hood drive circuit module includes a fan drive circuit unit, and the fan drive circuit unit is electrically connected to the fan.

5. The oil fume extraction system according to claim 4, characterized in that: The range hood load further includes a lighting device; the range hood drive circuit module further includes a lighting drive circuit unit, and the lighting drive circuit unit is electrically connected to the lighting device; and / or, The range hood load further includes a windshield driving device, and the range hood driving circuit module further includes a windshield driving circuit unit, and the windshield driving circuit unit is electrically connected to the windshield driving device.

6. The oil fume extraction system according to claim 5, characterized in that: The windshield driving device comprises a push rod motor, and the push rod motor is connected to the windshield.

7. The oil fume extraction system according to claim 6, characterized in that: The push rod motor is a DC motor; The windshield driving circuit unit includes a first load current acquisition circuit, the control module includes a first load current receiving end, and the first load current acquisition circuit is electrically connected to the first load current receiving end.

8. The oil fume extraction system according to claim 1, characterized in that: The damper load includes a damper motor, and the damper motor is connected to the damper valve; The damper motor is a DC motor; the damper drive circuit module includes a second load current acquisition circuit, the control module includes a second load current receiving end, and the second load current acquisition circuit is electrically connected to the second load current receiving end.

9. The oil fume extraction system according to claim 1, characterized in that: The range hood main control board also includes a power module; the power module is electrically connected to an external power source, the control module, the range hood drive circuit module, the air valve drive circuit module, the range hood load, and the air valve load, respectively.

10. The oil fume extraction system according to claim 9, characterized in that: The power module includes a power distribution unit and a power conversion unit; the power distribution unit is electrically connected to the external power supply, the power conversion unit and the first type of load respectively; the power conversion unit is used to convert the AC power supply into a DC power supply, and is electrically connected to the control module, the range hood drive circuit module, the air valve drive circuit module and the second type of load respectively; Among them, the first type of load is the load whose working power supply is AC among the range hood load and the damper load; the second type of load is the load whose working power supply is DC among the range hood load and the damper load.

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