Protective mask with respirator

Abstract

The protective mask comprises a protective mask body and the respirator which is connected with the protective mask body through a pipeline and used for supplying air, the respirator comprises a shell, a draught fan, a filtering assembly and a control system, a mounting chamber is formed in the shell, and the draught fan and the filtering assembly are both arranged in the mounting chamber; the filter assembly is provided with an electronic tag for storing filter assembly parameters, and the control system comprises a tag identification unit used for identifying the electronic tag and reading the filter assembly parameters in the electronic tag; the fan driving unit is used for driving a fan to operate; the control processing unit is provided with a first input end connected with the label identification unit and a first output end connected with the fan driving unit; when the filter assembly parameters obtained by the first input end can be matched with the set requirements, the control processing unit controls the fan to operate normally through the fan driving unit; and when matching cannot be carried out, the fan stops running. The use convenience is improved, and the protective mask is prevented from being polluted by dust due to excessive use of the filtering assembly.

Description

Technical Field

[0001] The present application relates to the technical field of welding protection equipment, and in particular to a protective mask with a respirator. Background Art

[0002] Workers working in dusty environments such as welding and carpentry suffer considerable health damage due to long-term exposure to dust. The commonly used method for this is to wear protective masks with dust filtering function.

[0003] However, the filtration system of protective masks is generally relatively fine, and air circulation is not easy. This affects the user experience during long-term use, especially in hot conditions. Utility Model Content

[0004] Based on this, it is necessary to provide a protective mask with a respirator in response to the above technical problems.

[0005] The present invention relates to a protective mask with a respirator, comprising a protective mask and a respirator connected to the protective mask through a pipeline for supplying air. The respirator comprises a housing, a fan, a filter assembly, and a control system. An installation chamber is formed inside the housing, and the fan and the filter assembly are both arranged in the installation chamber. The filter assembly has an electronic tag for storing filter assembly parameters. The control system comprises:

[0006] a tag identification unit, configured to identify the electronic tag and read the filter component parameters therein;

[0007] A fan drive unit, used to drive the fan to operate;

[0008] a control processing unit having a first input end connected to the tag identification unit and a first output end connected to the fan drive unit;

[0009] When the filter component parameters obtained at the first input end can match the set requirements, the control processing unit controls the normal operation of the fan through the fan drive unit; when the filter component parameters cannot match, the control processing unit stops the fan operation through the fan drive unit.

[0010] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution. They are merely further supplements or optimizations. Under the premise that there are no technical or logical contradictions, each optional method can be combined separately for the above-mentioned overall solution, or multiple optional methods can be combined.

[0011] Optionally, the control system includes a reminder unit for issuing a reminder, and the control processing unit has a second output terminal connected to the reminder unit;

[0012] When the filter component parameters obtained by the first input end cannot be matched, the control processing unit controls the reminder unit to issue a reminder through the second output end.

[0013] Optionally, the control system includes a display unit for displaying the current working status of the control system, and the control processing unit has a third output terminal connected to the display unit.

[0014] Optionally, the control system includes an input unit for starting and stopping the control system, and the control processing unit has a second input terminal connected to the input unit.

[0015] Optionally, the control system includes a power supply unit for providing electrical energy, and the power supply unit is electrically connected to the tag identification unit, the fan drive unit, the reminder unit, the display unit, and the input unit.

[0016] Optionally, the shell is provided with a receiving groove, in which a connector is exposed that is electrically connected to the tag identification unit, the fan drive unit, the reminder unit, the display unit, and the input unit, and the connector is used to be electrically connected to the power supply unit.

[0017] Optionally, the power supply unit is a battery pack disposed in the accommodating groove and configured to be plugged and electrically connected to the connector.

[0018] Optionally, the electronic tag is an NFC tag.

[0019] Optionally, the fan drive unit includes a fan pre-drive circuit and a fan drive circuit.

[0020] The protective mask with a respirator in this application has at least the following technical effects:

[0021] The protective mask of the present application is used to be worn by the user, the respirator is used to supply air to the protective mask through a pipeline, and the filter component is moved to the respirator to prevent the user from being affected by the fine filter component on the protective mask, thereby improving the convenience of use.

[0022] The present application reads the detection filter component parameters through the first input end of the control processing unit and controls the fan to stop running accordingly, thereby preventing the protective mask and the pipelines of the protective mask and respirator from being contaminated by dust due to excessive use of the filter component. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a protective mask with a respirator protective mask according to an embodiment of the present application;

[0024] Figure 2This is a schematic structural diagram of a respirator with a respirator protective mask according to an embodiment of the present application;

[0025] Figure 3 for Figure 2 Schematic diagram of the open state;

[0026] Figure 4 for Figure 3 Assembly diagram of the filter assembly;

[0027] Figure 5 for Figure 2 Schematic diagram of the structure of the assembled battery pack;

[0028] Figure 6 This is a schematic diagram of the module structure of a control system in one embodiment of the present application;

[0029] Figure 7 for Figure 6 Circuit diagram of the blower drive unit;

[0030] The reference numerals in the figures are described as follows:

[0031] 100, protective mask; 200, respirator; 201, inner shell; 202, flip cover; 210, housing; 211, installation chamber; 212, receiving slot; 213, connector; 214, battery pack; 220, fan; 230, filter assembly; 232, support frame;

[0032] 300, control system; 301, first input terminal; 302, first output terminal; 303, second input terminal; 304, second output terminal; 306, third output terminal;

[0033] 310. Tag identification unit; 320. Fan drive unit; 321. Fan pre-drive circuit; 322. Fan drive circuit; 330. Control processing unit; 340. Reminder unit; 350. Input unit; 360. Display unit. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be an intermediate component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be an intermediate component.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] In this application, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number or order of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In this application, the terms "comprises" and "comprising" and any variations thereof are intended to cover non-exclusive inclusions, for example, a system, product or apparatus comprising a list of elements is not necessarily limited to those elements expressly listed but may include other elements not expressly listed or inherent to such products or apparatuses.

[0039] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood broadly. For example, they can mean fixed connection, detachable connection, or integration; they can mean mechanical connection, electrical connection, or mutual communication; they can mean direct connection or indirect connection through an intermediate medium, and they can enable internal communication between two elements or interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0040] See also Figures 1 to 5One embodiment of the present application provides a protective mask with a respirator. The protective mask with a respirator includes a protective mask 100 and a respirator 200 connected to the protective mask 100 through a pipeline for supplying air. The respirator 200 includes a housing 210, a fan 220, a filter assembly 230, and a control system 300. The housing 210 includes an inner shell 201 and a flip cover 202. An installation chamber 211 is formed inside the housing 210. The fan 220 and the filter assembly 230 are both located in the installation chamber 211. The filter assembly 230 has an electronic tag that stores parameters of the filter assembly 230. The electronic tag is, for example, an NFC tag (Near Field Communication). The housing 210 is provided with a receiving groove 212. A connector 213 is exposed in the receiving groove 212. A battery pack 214 is provided in the receiving groove 212 for plugging and electrically connecting with the connector 213.

[0041] See also Figures 1 to 6 The control system 300 includes a tag recognition unit 310, a fan drive unit 320, and a control processing unit 330. The tag recognition unit 310 is used to recognize the electronic tag and read the parameters of the filter assembly 230 therein, while the fan drive unit 320 is used to drive the fan 220. The control processing unit 330 has a first input terminal 301 connected to the tag recognition unit 310 and a first output terminal 302 connected to the fan drive unit 320.

[0042] In this embodiment, the protective mask 100 is used to be worn by the user, the respirator 200 is used to supply air to the protective mask 100 through a pipeline, and the filter component 230 is moved to the respirator 200 to prevent the user from being affected by the fine filter component 230 on the protective mask 100, thereby improving the convenience of use.

[0043] The tag identification unit 310 can be implemented based on a near-field communication circuit using RFID. The filter assembly 230 utilizes a filter cartridge, comprising a support frame 232 and a filter element mounted thereto. The electronic tag is positioned on the filter assembly 230 as needed. The control processing unit 330 can be designed based on an MCU (Microcontroller Unit). The electronic tag stores filter assembly 230 parameters, including the remaining lifespan of the filter assembly 230 and the model number of the filter assembly 230 corresponding to the respirator 200.

[0044] Filter assembly 230 is crucial during air delivery and must be correctly installed. Therefore, a tag identification unit 310 is provided to monitor filter assembly 230 during operation of respirator 200. Unique encryption and decryption algorithms are designed to read the electronic tag information. During operation of respirator 200, tag identification unit 310 intermittently obtains and identifies the electronic tag of filter assembly 230 to detect whether filter assembly 230 is online. The decryption algorithm verifies the electronic tag of filter assembly 230.

[0045] When the filter assembly 230 parameters obtained by the first input terminal 301 match the set requirements, the control processing unit 330 controls the fan 220 to operate normally through the fan drive unit 320. When the filter assembly 230 parameters do not match, the control processing unit 330 controls the fan 220 to stop operating through the fan drive unit 320. The set requirements may include, for example, the model of the filter assembly 230 and the remaining service life of the filter assembly 230.

[0046] When assembling a new filter assembly 230, the control processing unit 330 obtains the filter assembly 230 model number read by the tag identification unit 310 through the first input terminal 301 to confirm a match. If a match is successful, the remaining service life of the filter assembly 230 is read. The control processing unit 330 is designed with a timer system to calculate the time loss caused by the operation of the filter assembly 230. During use, the control processing unit 330 updates the remaining service life of the current filter assembly 230 based on the time loss and can also simultaneously update the remaining service life of the electronic tag.

[0047] The control processing unit 330 is configured to update the parameters of the filter component 230 by writing them to the electronic tag. By updating the remaining lifetime of the filter component 230, the control processing unit 330 can automatically adjust the remaining lifetime of the filter component 230. To address issues such as failed programming, garbled characters, and high number of programming attempts, multi-space storage and dynamic shifting can be used to ensure correct programming. When the specified requirements are met, i.e., the model matches and the filter component 230's electronic tag indicates a remaining operating time, the fan 220 is controlled to operate normally.

[0048] In some embodiments, the control system 300 includes a reminder unit 340 for issuing a reminder, and the control processing unit 330 has a second output terminal 304 connected to the reminder unit 340. When the parameters of the filter component 230 obtained by the first input terminal 301 cannot be matched, the control processing unit 330 controls the reminder unit 340 to issue a reminder through the second output terminal 304.

[0049] If the electronic tag fails to match the set requirements, the fan 220 can be controlled to stop operating directly or with a delay. For example, if the electronic tag of the filter assembly 230 fails to match, the control processing unit 330 is configured to immediately trigger the reminder unit 340 to issue an alarm, for example, once every 30 seconds. After 10 minutes, the device enters a shutdown protection state. During the operation of the respirator 200, the control processing unit 330 continuously monitors the status information of each functional unit. If any status does not match, it can also control the alarm circuit to activate and report the error to the user.

[0050] In some embodiments, the control system 300 includes an input unit 350 for starting and stopping the control system 300, and a display unit 360 for displaying the current working status of the control system 300. The control processing unit 330 has a second input terminal 303 connected to the input unit 350, and a third output terminal 306 connected to the display unit 360. The input unit 350 can be, for example, an operation button provided on the ventilator housing 210 and circuit-connected to the second input terminal 303 of the control processing unit 330. The operation button controls the power on and off of the ventilator 200, and the power on is manifested by the fan 220 running and supplying air to the protective mask 100. The display unit 360 is used to display the human-computer interaction interface and host status information. The display unit 360 can be designed based on an LCD (Liquid Crystal Display) display circuit.

[0051] See also Figures 6 and 7 In some embodiments, the control system 300 includes a power supply unit for providing electrical energy. The power supply unit includes a battery pack 214 (such as a lithium battery pack 214) disposed in the receiving slot 212 and electrically connected to the connector 213, and a power supply circuit designed based on the battery pack 214. The power supply unit is also electrically connected to the tag identification unit 310, the fan drive unit 320, the reminder unit 340, the display unit 360, and the input unit 350. Specifically, the connector 213 in the receiving slot 212 is also electrically connected to the tag identification unit 310, the fan drive unit 320, the reminder unit 340, the display unit 360, and the input unit 350. The fan drive unit 320 includes a fan pre-drive circuit 321 and a fan drive circuit 322. The fan drive circuit 322 can be implemented based on a switching tube (such as a MOSFET tube), the source and drain of the MOSFET are respectively coupled to the power supply unit and the fan 220, and the fan pre-drive circuit 321 can be implemented based on a pre-drive IC, which is used to receive the PWM signal output by the control processing unit 330 and thereby control the conduction angle of the MOSFET tube.

[0052] like Figure 7As shown, the fan pre-driver circuit 321 is implemented based on the pre-driver integrated circuit U1. The pre-driver integrated circuit U1 has a first PWM input terminal (PWM 2H IN port), a second PWM input terminal (PWM 2L IN port), a first trigger terminal HO2, a second trigger terminal LO2, a power input terminal VB2, and a control terminal VS2. Both the first PWM input terminal and the second PWM input terminal are used to receive the PWM signal output by the control processing unit 330. The first trigger terminal HO2 and the second trigger terminal LO2 are both used to output a trigger signal that turns on the MOSFET. The power input terminal VB2 is used to activate the pre-driver integrated circuit U1 after power is supplied.

[0053] The fan drive circuit 322 includes a first switch tube Q3 and a second switch tube Q4. The source of the first switch tube Q3 is connected to the power supply unit VBAT, the drain of the first switch tube Q3 is connected to the control terminal VS2, and the base of the first switch tube Q3 is connected to the first trigger terminal HO2 (via resistor R17). The power supply VCCA (for example, obtained through the power supply unit VBAT) supplies power to the input terminal VB2 through the diode D7 and the resistor R18 in turn. A capacitor C20 is connected between the input terminal VB2 and the control terminal VS2. The fan 220 is designed based on a three-phase motor, such as a three-phase brushless motor. The control terminal VS2 is connected to the phase line MA of one phase of the three-phase brushless motor to drive the three-phase brushless motor to work. The remaining phase lines of the three-phase brushless motor can be repeatedly configured according to the phase line MA.

[0054] The source of the second switch Q4 is connected to the drain of the first switch Q3, and the base of the second switch Q4 is connected to the second trigger terminal LO2 (via resistor R20). A capacitor C23 is connected between the base and drain of the second switch Q4. The drain of the second switch Q4 is used to output a check signal ACHECK, which can be directly or indirectly connected to the control processing unit 330 for verification.

[0055] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as no contradiction exists between these combinations of technical features, they should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be deemed that the drawing also discloses examples of combinations of the various embodiments involved.

[0056] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, and such modifications and improvements are all within the scope of protection of the present application.

Claims

1. A protective mask with a respirator, characterized in that: A respirator comprising a protective mask and a respirator connected to the protective mask via a pipeline for supplying air, the respirator comprising a housing, a fan, a filter assembly, and a control system, wherein an installation chamber is formed inside the housing, the fan and the filter assembly are both arranged in the installation chamber, the filter assembly has an electronic tag for storing filter assembly parameters, and the control system comprises: a tag identification unit, configured to identify the electronic tag and read the filter component parameters therein; A fan drive unit, used to drive the fan to operate; a control processing unit having a first input end connected to the tag identification unit and a first output end connected to the fan drive unit; When the filter component parameters obtained at the first input end can match the set requirements, the control processing unit controls the normal operation of the fan through the fan drive unit; when the filter component parameters cannot match, the control processing unit stops the fan operation through the fan drive unit.

2. The protective mask according to claim 1, characterized in that The control system includes a reminder unit for issuing a reminder, and the control processing unit has a second output terminal connected to the reminder unit; When the filter component parameters obtained by the first input end cannot be matched, the control processing unit controls the reminder unit to issue a reminder through the second output end.

3. The protective mask according to claim 2, characterized in that The control system includes a display unit for displaying the current working state of the control system, and the control processing unit has a third output terminal connected to the display unit.

4. The protective mask according to claim 3, characterized in that The control system includes an input unit for starting and stopping the control system, and the control processing unit has a second input terminal connected to the input unit.

5. The protective mask according to claim 4, characterized in that The control system includes a power supply unit for providing electric energy, and the power supply unit is electrically connected to the tag identification unit, the fan drive unit, the reminder unit, the display unit, and the input unit.

6. The protective mask according to claim 5, characterized in that The shell is provided with a receiving groove, in which a connector electrically connected to the tag identification unit, the fan drive unit, the reminder unit, the display unit and the input unit is exposed. The connector is used to be electrically connected to the power supply unit.

7. The protective mask according to claim 6, characterized in that The power supply unit is a battery pack arranged in the accommodating groove and used for plugging and matching with the connector to be electrically connected.

8. The protective mask according to claim 1, wherein: The electronic tag is an NFC tag.

9. The protective mask according to claim 1, wherein: The fan drive unit includes a fan pre-drive circuit and a fan drive circuit.

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