Electric sputum aspirator

Abstract

The utility model relates to the technical field of medical equipment control, in particular to an electric sputum aspirator which comprises a control chip, a key module, a first switch tube, an air pump working state indicating lamp and an air pump. When the first switch tube is closed, the first switch tube receives the power supply voltage and outputs the power supply voltage so as to supply power to the air pump working state indicating lamp and the air pump, so that the air pump working state indicating lamp and the air pump are switched on and switched off, and the air pump working state indicating lamp and the air pump are switched off. According to the electric sputum aspirator, the air pump is controlled to work, the working state of the air pump is displayed through the air pump working state indicator lamp, the control chip can control the air pump working state indicator lamp and the air pump only by outputting one switch control signal, the control logic complexity of the control chip is reduced, and meanwhile the reliability of the electric sputum aspirator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment control, in particular to an electric sputum suction device. Background Art

[0002] The existing electric sputum suction machine has complex functions, and the control chip in the electric sputum suction machine needs to control each functional module through software logic. In actual operation, the control chip needs to output corresponding control signals to each module while controlling the air pump to work, so as to control each module. Its control logic is complex and prone to failure during the control process, which will reduce the reliability of the electric sputum suction machine.

[0003] Therefore, how to reduce the control logic complexity of the electric sputum suction device control chip to improve the reliability of the electric sputum suction device has become an urgent problem to be solved in this field. Summary of the invention

[0004] The embodiment of the utility model provides an electric sputum suction device to solve the problem of low reliability of the electric sputum suction device in the prior art.

[0005] In a first aspect, the utility model provides an electric sputum suction device, comprising: a control chip, a key module, a first switch tube, an air pump working status indicator light and an air pump; wherein:

[0006] The output end of the key module is connected to the control signal input end of the control chip, the control signal output end of the control chip is connected to the control end of the first switch tube, the power supply end of the control chip is used to receive the working voltage, the input end of the first switch tube is used to receive the power supply voltage, the output end of the first switch tube is connected to the power supply end of the air pump, and the output end of the first switch tube is connected to the power supply end of the air pump working status indicator light;

[0007] The key module is used to output a power on / off control signal to the control signal input terminal of the control chip, and the control chip is used to output a switch control signal to the control terminal of the first switch tube.

[0008] In one embodiment, the electric sputum suction device further comprises: a battery, a first comparison circuit and a display module;

[0009] The output end of the battery is connected to the input end of the first switch tube, the output end of the battery is connected to the comparison signal input end of the first comparison circuit, the reference signal input end of the first comparison circuit is used to receive the reference signal, and the output end of the first comparison circuit is connected to the input end of the display module;

[0010] The battery is used to output the power supply voltage to the input end of the first switching tube, the battery is used to output the power supply voltage to the comparison signal input end of the first comparison circuit, and the first comparison circuit is used to output the display module control signal to the input end of the display module according to the power supply voltage and the reference signal.

[0011] In one embodiment, the electric sputum suction device further comprises: an adapter and a second switch tube;

[0012] The input end of the adapter is used to receive an AC voltage, the first output end of the adapter is connected to the input end of the first switch tube, the first output end of the adapter is connected to the control end of the second switch tube, the input end of the second switch tube is connected to the output end of the battery, and the output end of the second switch tube is connected to the input end of the first switch tube.

[0013] In one embodiment, the electric sputum suction device further comprises: a first power supply voltage conversion module;

[0014] The input end of the first power supply voltage conversion module is connected to the first output end of the adapter, and the output end of the first power supply voltage conversion module is connected to the reference signal input end of the first comparison circuit.

[0015] In one embodiment, the electric sputum suction device further comprises: a battery charging module, a third switch tube, and a charging status indicator light;

[0016] The second output end of the adapter is connected to the input end of the battery charging module, the output end of the battery charging module is connected to the charging end of the battery, the control end of the third switch tube is connected to the output end of the battery charging module, the input end of the third switch tube is connected to the output end of the first power supply voltage conversion module, and the output end of the third switch tube is connected to the power supply end of the charging status indicator light.

[0017] In one embodiment, the electric sputum suction device further comprises: a second comparison circuit and a fourth switch tube;

[0018] The reference signal input end of the second comparison circuit is connected to the output end of the first power supply voltage conversion module, the comparison signal input end of the second comparison circuit is connected to the first output end of the adapter, the output end of the second comparison circuit is connected to the control end of the fourth switch tube, the input end of the fourth switch tube is connected to the first output end of the adapter, and the output end of the fourth switch tube is connected to the input end of the first switch tube.

[0019] In one embodiment, the electric sputum suction device further includes: a first anti-interference module;

[0020] The input end of the first anti-interference module is connected to the first output end of the adapter, and the output end of the first anti-interference module is connected to the input end of the first switch tube.

[0021] In one embodiment, the electric sputum suction device further comprises: a first diode, and / or a second diode;

[0022] The input end of the first diode is connected to the first output end of the adapter, the output end of the first diode is connected to the input end of the first switch tube, the input end of the second diode is connected to the output end of the battery, and the output end of the second diode is connected to the input end of the first switch tube.

[0023] In one embodiment, the electric sputum suction device further includes: a second anti-interference module, and / or a second power supply voltage conversion module;

[0024] The input end of the second anti-interference module is connected to the output end of the first switching tube, the output end of the second anti-interference module is connected to the power supply end of the air pump, the input end of the second power supply voltage conversion module is used to receive the power supply voltage, and the output end of the second power supply voltage conversion module is connected to the power supply end of the control chip.

[0025] In one embodiment, the electric sputum suction device further comprises: a heat dissipation module;

[0026] The power supply end of the heat dissipation module is connected to the output end of the first switch tube.

[0027] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0028] The utility model provides an electric sputum suction device, comprising: a control chip, a key module, a first switch tube, an air pump working status indicator light and an air pump. The user outputs a power on / off control signal to the control chip through the key module, so that the control chip outputs a corresponding switch control signal to the first switch tube according to the power on / off control signal, thereby controlling the conduction and disconnection of the first switch tube. When the first switch tube is closed, the first switch tube receives and outputs a power supply voltage to supply power to the air pump working status indicator light and the air pump, thereby controlling the air pump to work, and displaying the working status of the air pump through the air pump working status indicator light, so that the control chip only needs to output a switch control signal to control the air pump working status indicator light and the air pump, thereby reducing the complexity of the control logic of the control chip and improving the reliability of the electric sputum suction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is a structural schematic diagram of an electric sputum suction device provided by an embodiment of the utility model;

[0031] Figure 2 This is another structural schematic diagram of the electric sputum suction device provided by one embodiment of the utility model;

[0032] Among them, 01, control chip, 02, key module, 03, first switch tube, 04, air pump working status indicator light, 05, air pump, 06, battery, 07, first comparison circuit, 08, display module, 09, adapter, 10, second switch tube, 11, first power supply voltage conversion module, 12, battery charging module, 13, third switch tube, 14, charging status indicator light, 15, second comparison circuit, 16, fourth switch tube, 17, first anti-interference module, 18, second anti-interference module, 19, second power supply voltage conversion module, 20, heat dissipation module. First diode D1, second diode D2. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0034] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In order to thoroughly understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0037] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosure belongs. It will be further understood that the terms used herein should be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0038] In one embodiment, if Figure 1 As shown, a schematic diagram of the structure of an electric sputum suction device is provided, including: a control chip 01, a key module 02, a first switch tube 03, an air pump working status indicator light 04 and an air pump 05; wherein,

[0039] The output end of the button module 02 is connected to the control signal input end of the control chip 01, the control signal output end of the control chip 01 is connected to the control end of the first switch tube 03, the power supply end of the control chip 01 is used to receive the working voltage, the input end of the first switch tube 03 is used to receive the power supply voltage, the output end of the first switch tube 03 is connected to the power supply end of the air pump 05, and the output end of the first switch tube 03 is connected to the power supply end of the air pump working status indicator 04;

[0040] The key module 02 is used to output a power on / off control signal to a control signal input terminal of the control chip 01 , and the control chip 01 is used to output a switch control signal to a control terminal of the first switch tube 03 .

[0041] Optional, such as Figure 2 As shown, a PMOS tube can be used as the first switch tube 03 to achieve the corresponding function. The actual application is not limited to this and depends on the specific application environment, which is within the protection scope of this application.

[0042] The working process of the above-mentioned electric sputum suction device is: the user presses the button module 02 to control the button module 02 to output a power-on control signal to the control chip 01, and the control signal output end of the control chip 01 outputs a corresponding control signal to the control end of the first switch tube 03 to control the conduction and disconnection of the first switch tube 03.

[0043] Specifically, when the user presses the button module 02 for the first preset time, the control signal output end of the control chip 01 outputs a conduction control signal to the control end of the first switch tube 03 to control the conduction of the first switch tube 03, so that the first switch tube 03 can output the power supply voltage to the power supply end of the air pump 05 after receiving the power supply voltage, so as to drive the air pump 05 to work, and output the power supply voltage to the air pump working status indicator light 04, so as to control the air pump working status indicator light 04 to display that the air pump 05 is in the working state; when the user presses the button module 02 for the second preset time, the control signal output end of the control chip 01 outputs a disconnection control signal to the control end of the first switch tube 03 to control the first switch tube 03 to disconnect, so that the first switch tube 03 stops outputting the power supply voltage to the power supply end of the air pump 05, so as to control the air pump 05 to stop working, and stops outputting the power supply voltage to the air pump working status indicator light 04, so as to control the air pump working status indicator light 04 to display that the air pump 05 is in the shutdown state.

[0044] In actual applications, a membrane key can be used as the key module 02 to achieve the corresponding function, and the value of the first preset time length can be 0.5s, and the value of the second preset time length can be 2s. The actual application is not limited to this and depends on the specific application environment. It is all within the protection scope of this application.

[0045] The electric sputum suction device of the present embodiment comprises: a control chip 01, a button module 02, a first switch tube 03, an air pump working status indicator light 04 and an air pump 05. The user outputs a switch control signal to the control chip 01 through the button module 02, so that the control chip 01 outputs a corresponding switch control signal to the first switch tube 03 according to the switch control signal, thereby controlling the conduction and disconnection of the first switch tube 03. When the first switch tube 03 is closed, the first switch tube 03 receives the power supply voltage and outputs the power supply voltage to supply power to the air pump working status indicator light 04 and the air pump 05, thereby controlling the air pump 05 to work, and displaying the working status of the air pump 05 through the air pump working status indicator light 04, so that the control chip 01 only needs to output one switch control signal to control the air pump working status indicator light 04 and the air pump 05, thereby reducing the control logic complexity of the control chip 01 and improving the reliability of the electric sputum suction device.

[0046] In one embodiment, if Figure 2 As shown, a schematic diagram of the structure of an electric sputum suction device is provided. Figure 1Based on the structural diagram of the electric phlegm suction device shown in FIG. 1 , the electric phlegm suction device further includes: a battery 06, a first comparison circuit 07 and a display module 08; wherein:

[0047] The output end of the battery 06 is connected to the input end of the first switch tube 03, the output end of the battery 06 is connected to the comparison signal input end of the first comparison circuit 07, the reference signal input end of the first comparison circuit 07 is used to receive the reference signal, and the output end of the first comparison circuit 07 is connected to the input end of the display module 08;

[0048] The battery 06 is used to output the power supply voltage to the input end of the first switch tube 03, and the battery 06 is used to output the power supply voltage to the comparison signal input end of the first comparison circuit 07. The first comparison circuit 07 is used to output the display module 08 control signal to the input end of the display module 08 according to the power supply voltage and the reference signal.

[0049] In practical applications, an overcurrent fuse can be set at the output end of battery 06 for overcurrent protection to prevent the output current of battery 06 from being too large and causing damage to subsequent equipment. The practical application is not limited to this and depends on the specific application environment, which is within the protection scope of this application.

[0050] The working process of the above-mentioned electric sputum suction device is as follows: when the electric sputum suction device is working, the battery 06 outputs the power supply voltage to the input end of the first switch tube 03, so as to power the air pump working status indicator light 04 and the air pump 05 through the first switch tube 03, and the battery 06 outputs the power supply voltage to the comparison signal input end of the first comparison circuit 07. At the same time, the first comparison circuit 07 receives the reference signal, and compares the power supply voltage with the reference signal, and then outputs the corresponding display module 08 control signal to the display module 08, so as to control the display module 08 to display the status of the battery 06.

[0051] Specifically, when the power supply voltage output by the battery 06 is overvoltage, the display module 08 control signal output by the first comparison circuit 07 is an overvoltage display control signal, so as to display the overvoltage of the battery 06 through the display module 08; when the power supply voltage output by the battery 06 is undervoltage, the display module 08 control signal output by the first comparison circuit 07 is an undervoltage display control signal, so as to display the undervoltage of the battery 06 through the display module 08.

[0052] In practical applications, the first comparison circuit 07 may be composed of a voltage divider circuit and a comparator, which is not specifically limited here and may be determined according to the actual application environment, and is within the protection scope of this application.

[0053] The electric sputum suction device of this embodiment compares the reference signal and the power supply voltage output by the battery 06 through the first comparison circuit 07, and then outputs the corresponding display module 08 control signal to the display module 08, so as to display whether the power supply voltage output by the battery 06 is undervoltage or overvoltage through the display module 08. At the same time, the display module 08 can be controlled without using the control chip 01, which reduces the control logic complexity of the control chip 01 and improves the reliability of the electric sputum suction device.

[0054] In one embodiment, if Figure 2 As shown, the electric sputum suction device also includes: an adapter 09 and a second switch tube 10; wherein:

[0055] The input end of the adapter 09 is used to receive an AC voltage, the first output end of the adapter 09 is connected to the input end of the first switch tube 03, the first output end of the adapter 09 is connected to the control end of the second switch tube 10, the input end of the second switch tube 10 is connected to the output end of the battery 06, and the output end of the second switch tube 10 is connected to the input end of the first switch tube 03.

[0056] In practical applications, an overcurrent fuse can be set at the first output end of the adapter 09 for overcurrent protection to prevent the first output current of the adapter 09 from being too large and causing damage to the subsequent equipment; Figure 2 As shown, a PMOS tube is used as the first switch tube 03 to achieve the corresponding function. The actual application is not limited to this, and it depends on the specific application environment, which is within the protection scope of this application.

[0057] The working process of the above-mentioned electric sputum suction device is as follows: when the adapter 09 is connected to the power grid to receive AC voltage, the adapter 09 outputs a first power supply voltage, and inputs the first power supply voltage as a control signal of the second switch tube 10 to the control end of the second switch tube 10 to control the second switch tube 10 to disconnect, thereby controlling the battery 06 to stop supplying power to the first switch tube 03, and at the same time, inputs the first power supply voltage as a power supply voltage to the input end of the first switch tube 03 to supply power to the air pump working status indicator light 04 and the air pump 05 through the first switch tube 03, and while controlling the air pump 05 to work, controls the air pump working status indicator light 04 to display the working status of the air pump 05.

[0058] The electric sputum suction device of the present embodiment adopts an adapter 09 to receive an AC voltage and output a first power supply voltage to supply power to the air pump 05 and the air pump working status indicator light 04, and the second switch tube 10 is arranged between the output end of the battery 06 and the input end of the first switch tube 03, so as to output the first power supply voltage after the adapter 09 receives the AC voltage, and the first power supply voltage is input to the control end of the second switch tube 10 as a control signal of the second switch tube 10, so as to control the second switch tube 10 to disconnect, and then control the battery 06 to stop supplying power to the first switch tube 03. At the same time, there is no need to adopt a control chip 01, and when the adapter 09 receives the AC voltage, the adapter 09 can be controlled to preferentially supply power to the air pump 05 and the air pump working status indicator light 04, thereby reducing the control logic complexity of the control chip 01 and improving the reliability of the electric sputum suction device.

[0059] In one embodiment, if Figure 2 As shown, the electric sputum suction device also includes: a first power supply voltage conversion module 11; wherein, the input end of the first power supply voltage conversion module 11 is connected to the first output end of the adapter 09, and the output end of the first power supply voltage conversion module 11 is connected to the reference signal input end of the first comparison circuit 07.

[0060] The working process of the above-mentioned electric sputum suction device is as follows: when the adapter 09 receives the AC voltage and outputs the first power supply voltage, the first power supply voltage conversion module 11 receives the first power supply voltage output by the adapter 09, and outputs a reference voltage after converting the first power supply voltage, so that the reference voltage is input as a reference signal to the reference signal input terminal of the first comparison circuit 07, so that the first comparison circuit 07 can output the corresponding display module 08 control signal to the display module 08 according to the comparison signal and the reference signal.

[0061] Specifically, the first power supply voltage conversion module 11 can convert the first power supply voltage output by the adapter 09 into a 5V voltage and output it to the reference signal input terminal of the first comparison circuit 07. The actual application is not limited to this and depends on the specific application environment, which is within the protection scope of this application.

[0062] The electric sputum suction device of this embodiment adopts the first power supply voltage conversion module 11, so that there is no need to use the control chip 01. The first power supply voltage conversion module 11 can provide a reference signal for the first comparison circuit 07, thereby reducing the control logic complexity of the control chip 01 and improving the reliability of the electric sputum suction device.

[0063] In one embodiment, if Figure 2 As shown, the electric sputum suction device also includes: a battery charging module 12, a third switch tube 13, and a charging status indicator light 14; wherein:

[0064] The second output end of the adapter 09 is connected to the input end of the battery charging module 12, the output end of the battery charging module 12 is connected to the charging end of the battery 06, the control end of the third switch tube 13 is connected to the output end of the battery charging module 12, the input end of the third switch tube 13 is connected to the output end of the first power supply voltage conversion module 11, and the output end of the third switch tube 13 is connected to the power supply end of the charging status indicator light 14.

[0065] In practical applications, an overcurrent fuse can be set at the second output end of the adapter 09 for overcurrent protection to prevent the second output of the adapter 09 from causing damage to the subsequent equipment due to excessive current. Figure 2 As shown, a PMOS tube is used as the third switch tube 13 to achieve the corresponding function. The actual application is not limited to this, and it depends on the specific application environment, which is within the protection scope of this application.

[0066] The working process of the above-mentioned electric sputum suction device is as follows: when the adapter 09 is connected to the power grid to receive AC voltage, the adapter 09 outputs a second power supply voltage to the battery charging module 12, so as to output a charging voltage to the battery 06 through the battery charging module 12 to charge the battery 06, and at the same time outputs a charging voltage to the third switch tube 13 to control the third switch tube 13 to close, receive the reference voltage output by the first power supply voltage conversion module 11, and power the charging status indicator light 14 to display that the battery 06 is in a charging state.

[0067] The electric sputum suction device of this embodiment adopts a battery charging module 12 to charge the battery 06, and controls the closing of the third switch tube 13 through the charging voltage output by the battery charging module 12, so as to control the charging status indicator light 14 to show that the battery 06 is in a charging state, so that there is no need to adopt the control chip 01 to control the adapter 09 and the charging status indicator light. The adapter 09 can be controlled to charge the battery 06 and display whether the battery 06 is in a charging state at the same time, thereby reducing the control logic complexity of the control chip 01 and improving the reliability of the electric sputum suction device.

[0068] In one embodiment, if Figure 2 As shown, the electric sputum suction device also includes: a second comparison circuit 15 and a fourth switch tube 16; wherein:

[0069] The reference signal input end of the second comparison circuit 15 is connected to the output end of the first power supply voltage conversion module 11, the comparison signal input end of the second comparison circuit 15 is connected to the first output end of the adapter 09, the output end of the second comparison circuit 15 is connected to the control end of the fourth switch tube 16, the input end of the fourth switch tube 16 is connected to the first output end of the adapter 09, and the output end of the fourth switch tube 16 is connected to the input end of the first switch tube 03.

[0070] In practical applications, the second comparison circuit 15 can be composed of a voltage divider circuit and a comparator; Figure 2 As shown, a PMOS transistor can also be used as the third switch transistor 13 to achieve the corresponding function. No specific limitation is made here, and it can be determined according to the actual application environment, which is within the protection scope of this application.

[0071] The working process of the above-mentioned electric sputum suction device is as follows: when the adapter 09 is connected to the power grid to receive AC voltage, the power signal receives the reference voltage output by the first power voltage conversion module 11, and receives the first power supply voltage output by the adapter 09, so as to judge whether the first power supply voltage output by the adapter 09 is over-voltage based on the reference voltage. If it occurs, a disconnection control signal is output to the control end of the fourth switch tube 16 to control the fourth switch tube 16 to disconnect, and then control the adapter 09 to stop providing the first power supply voltage to the input end of the first switch tube 03.

[0072] The electric sputum suction device of the present embodiment adopts the second comparison circuit 15 and the fourth switch tube 16, so that it is possible to determine whether the first power supply voltage output by the adapter 09 is over-voltage without using the control chip 01. At the same time, the adapter 09 can be controlled to stop outputting the first power supply voltage to the input end of the first switch tube 03 without using the control chip. This reduces the control logic complexity of the control chip 01 and improves the reliability of the electric sputum suction device.

[0073] In one embodiment, if Figure 2 As shown, the electric sputum suction device also includes: a first anti-interference module 17; wherein the input end of the first anti-interference module 17 is connected to the first output end of the adapter 09, and the output end of the first anti-interference module 17 is connected to the input end of the first switch tube 03.

[0074] In practical applications, a common film inductor and EDS (Elertro Static Discharged Protection) can be used together to form the first anti-interference module 17 to achieve the corresponding anti-interference function. The practical application is not limited to this and depends on the specific application environment, which is within the protection scope of this application.

[0075] The working process of the above-mentioned electric sputum suction device is as follows: when the electric sputum suction device is working, the first power supply voltage output by the adapter 09 is filtered and stabilized by the first anti-interference module 17, and then input to the input end of the first switch tube 03, so as to power the air pump 05 and the air pump 05 status indicator light through the first switch tube 03.

[0076] The electric sputum suction device of this embodiment uses the first anti-interference module 17 to filter and stabilize the first power supply voltage, and then inputs it to the input end of the first switch tube 03 to avoid the interference in the first power supply voltage or its unstable output affecting the operation of the air pump 05 and the air pump working status indicator light 04, thereby improving the reliability of the electric sputum suction device.

[0077] In one embodiment, optionally, the electric sputum suction device further includes: a first diode D1, and / or a second diode D2; Figure 2 As shown, the input end of the first diode D1 is connected to the first output end of the adapter 09, the output end of the first diode D1 is connected to the input end of the first switch tube 03, the input end of the second diode D2 is connected to the output end of the battery 06, and the output end of the second diode D2 is connected to the input end of the first switch tube 03.

[0078] See also Figure 2 The working process of the above-mentioned electric sputum suction device is as follows: when the adapter 09 is connected to the power grid to receive AC voltage, the first power supply voltage output by the adapter 09 is input to the input end of the first switch tube 03 via the first diode D1; and when the adapter 09 is not connected to the power grid to receive AC voltage, the power supply voltage output by the battery 06 is input to the input end of the first switch tube 03 via the second diode D2.

[0079] The electric sputum suction device of this embodiment uses the first diode D1 to prevent the adapter 09 from being damaged by reverse connection of the air pump 05 and the air pump working status indicator light 04, and uses the second diode D2 to prevent the battery 06 from being damaged by reverse connection of the air pump 05 and the air pump working status indicator light 04, thereby improving the reliability of the electric sputum suction device.

[0080] In one embodiment, optionally, the electric sputum suction device further includes: a second anti-interference module 18, and / or a second power supply voltage conversion module 19; Figure 2 As shown, the input end of the second anti-interference module 18 is connected to the output end of the first switching tube 03, the output end of the second anti-interference module 18 is connected to the power end of the air pump 05, the input end of the second power supply voltage conversion module 19 is used to receive the power supply voltage, and the output end of the second power supply voltage conversion module 19 is connected to the power end of the control chip 01.

[0081] In practical applications, the common film inductor and EDS can be used together to form the second anti-interference module 18 to achieve the corresponding anti-interference function. The practical application is not limited to this and depends on the specific application environment, which is within the protection scope of this application.

[0082] The working process of the above-mentioned electric sputum suction device is as follows: when the electric sputum suction device is working, after the input end of the first switch tube 03 receives the power supply voltage, the power supply voltage is output to the air pump 05 and the air pump 05 status indicator light through the second anti-interference module 18 to power the air pump 05 and the air pump 05 status indicator light; the second power supply voltage conversion module 19 receives the power supply voltage, and after converting the power supply voltage, outputs it to the power supply end of the control chip 01 to power the control chip 01.

[0083] Specifically, the second power supply voltage conversion module 19 can convert the received power supply voltage into a 3.3V voltage and output it to the control chip 01 to power the control chip 01. The actual application is not limited to this and depends on the specific application environment, which is within the protection scope of this application.

[0084] The electric sputum suction device of this embodiment uses the second anti-interference module 18 to filter and stabilize the power supply voltage, and then inputs it to the air pump 05 and the air pump working status indicator light 04, so as to avoid the noise in the power supply voltage or its unstable output affecting the operation of the air pump 05 and the air pump working status indicator light 04, thereby improving the reliability of the electric sputum suction device; and uses the second power supply voltage conversion module 19 to convert the power supply voltage and output it to the power supply end of the control chip 01 to power the control chip 01, so that the control chip 01 can be powered without an additional power supply, thereby reducing the manufacturing cost of the electric sputum suction device.

[0085] In one embodiment, optionally, Figure 2 As shown, the electric sputum suction device also includes: a heat dissipation module 20; wherein the power supply end of the heat dissipation module 20 is connected to the output end of the first switch tube 03.

[0086] Specifically, Figure 2 As shown, a fan can be used as a cooling device to cool the electric sputum suction device. The actual application is not limited to this and depends on the specific application environment, which is within the protection scope of this application.

[0087] The working process of the air path structure of the electric sputum suction device is as follows: when the electric sputum suction device is working, the heat dissipation module 20 is used to cool down each module in the electric sputum suction device.

[0088] The air path structure of the electric phlegm suction device of this embodiment uses a heat dissipation module 20 to cool down each module inside the electric phlegm suction device when the electric phlegm suction device is working, so as to avoid damage to the electric phlegm suction device caused by excessive temperature, thereby improving the safety and reliability of the electric phlegm suction device

[0089] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. An electric sputum suction device, characterized in that: include: control chip, key module, first switch tube, air pump working status indicator light and air pump; wherein, The output end of the key module is connected to the control signal input end of the control chip, the control signal output end of the control chip is connected to the control end of the first switch tube, the power supply end of the control chip is used to receive the working voltage, the input end of the first switch tube is used to receive the power supply voltage, the output end of the first switch tube is connected to the power supply end of the air pump, and the output end of the first switch tube is connected to the power supply end of the air pump working status indicator light; The key module is used to output a power on / off control signal to the control signal input terminal of the control chip, and the control chip is used to output a switch control signal to the control terminal of the first switch tube.

2. The electric sputum suction device according to claim 1, characterized in that: The electric sputum suction device also includes: a battery, a first comparison circuit and a display module; The output end of the battery is connected to the input end of the first switch tube, the output end of the battery is connected to the comparison signal input end of the first comparison circuit, the reference signal input end of the first comparison circuit is used to receive the reference signal, and the output end of the first comparison circuit is connected to the input end of the display module; The battery is used to output the power supply voltage to the input end of the first switching tube, the battery is used to output the power supply voltage to the comparison signal input end of the first comparison circuit, and the first comparison circuit is used to output the display module control signal to the input end of the display module according to the power supply voltage and the reference signal.

3. The electric sputum suction device according to claim 2, characterized in that: The electric sputum suction device also includes: an adapter and a second switch tube; The input end of the adapter is used to receive an AC voltage, the first output end of the adapter is connected to the input end of the first switch tube, the first output end of the adapter is connected to the control end of the second switch tube, the input end of the second switch tube is connected to the output end of the battery, and the output end of the second switch tube is connected to the input end of the first switch tube.

4. The electric sputum suction device according to claim 3, characterized in that: The electric phlegm suction device also includes: a first power supply voltage conversion module; The input end of the first power supply voltage conversion module is connected to the first output end of the adapter, and the output end of the first power supply voltage conversion module is connected to the reference signal input end of the first comparison circuit.

5. The electric sputum suction device according to claim 4, characterized in that: The electric sputum suction device also includes: a battery charging module, a third switch tube, and a charging status indicator light; The second output end of the adapter is connected to the input end of the battery charging module, the output end of the battery charging module is connected to the charging end of the battery, the control end of the third switch tube is connected to the output end of the battery charging module, the input end of the third switch tube is connected to the output end of the first power supply voltage conversion module, and the output end of the third switch tube is connected to the power supply end of the charging status indicator light.

6. The electric sputum suction device according to claim 4, characterized in that: The electric sputum suction device also includes: a second comparison circuit and a fourth switch tube; The reference signal input end of the second comparison circuit is connected to the output end of the first power supply voltage conversion module, the comparison signal input end of the second comparison circuit is connected to the first output end of the adapter, the output end of the second comparison circuit is connected to the control end of the fourth switch tube, the input end of the fourth switch tube is connected to the first output end of the adapter, and the output end of the fourth switch tube is connected to the input end of the first switch tube.

7. The electric sputum suction device according to claim 3, characterized in that: The electric sputum suction device also includes: a first anti-interference module; The input end of the first anti-interference module is connected to the first output end of the adapter, and the output end of the first anti-interference module is connected to the input end of the first switch tube.

8. The electric sputum suction device according to claim 3, characterized in that: The electric phlegm suction device further comprises: a first diode, and / or a second diode; The input end of the first diode is connected to the first output end of the adapter, the output end of the first diode is connected to the input end of the first switch tube, the input end of the second diode is connected to the output end of the battery, and the output end of the second diode is connected to the input end of the first switch tube.

9. The electric sputum suction device according to any one of claims 1 to 8, characterized in that: The electric phlegm suction device further comprises: a second anti-interference module, and / or a second power supply voltage conversion module; The input end of the second anti-interference module is connected to the output end of the first switching tube, the output end of the second anti-interference module is connected to the power supply end of the air pump, the input end of the second power supply voltage conversion module is used to receive the power supply voltage, and the output end of the second power supply voltage conversion module is connected to the power supply end of the control chip.

10. The electric sputum suction device according to any one of claims 1 to 8, characterized in that: The electric sputum suction device also includes: a heat dissipation module; The power supply end of the heat dissipation module is connected to the output end of the first switch tube.

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