CN217645690U - Electric air supply respirator equipped with air pressure sensor - Google Patents
Electric air supply respirator equipped with air pressure sensor Download PDFInfo
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- CN217645690U CN217645690U CN202221347901.4U CN202221347901U CN217645690U CN 217645690 U CN217645690 U CN 217645690U CN 202221347901 U CN202221347901 U CN 202221347901U CN 217645690 U CN217645690 U CN 217645690U
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- 239000000463 material Substances 0.000 abstract description 4
- 230000000241 respiratory effect Effects 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 description 49
- 230000000903 blocking effect Effects 0.000 description 7
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- 238000002474 experimental method Methods 0.000 description 3
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- 238000007664 blowing Methods 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 2
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Abstract
The utility model discloses an electric air supply respirator equipped with an air pressure sensor, which monitors the resistance of a filter screen and the air pressure of an air feeder in the respirator by adopting a plurality of air pressure sensors, realizes the monitoring and alarming functions of the resistance of a filter element and the total respiratory resistance of the respirator, and sends out alarm to users in time through a display screen and a buzzer alarm when the work is abnormal, such as high blockage degree of the filter element, overlarge resistance of an air outlet and the like, thereby improving the reliability of the power air supply filtering type respirator in use; simultaneously the utility model discloses a control panel of electronic air supply respirator provides two kinds of wireless network connection of WIFI and bluetooth, and user of service accessible wireless network sets up the control panel procedure to according to the normal operating range and the alarm value that the filter element that uses set up the adapted, improve the precision and the convenience in use of filter element jam degree monitoring, improved the suitability of filter element consumptive material.
Description
Technical Field
The utility model relates to a personal protection technical field, more specifically the utility model relates to a be equipped with baroceptor's electronic air supply respirator that says so.
Background
The power air supply filtering respirator is taken as a breathing protection device, and is widely applied to dust protection in special environment operation or virus particle protection in medical epidemic prevention work at present. The filter element is used as a key element of the respirator, the filtering effectiveness of dust and other particles and the flow of filtered clean air are directly influenced, and in order to ensure the use safety and meet the requirements of relevant national mandatory standards, the air resistance of the filter element, namely the blockage degree of a filter screen, must be monitored in the whole process of use, so that the respiratory air resistance and the flow of clean air meet the use requirements. Most of the devices on the market adopt a mode of monitoring the power change of the air blower to indirectly judge the blockage degree of the filter element, but the reliability is not high, the judgment flexibility is poor, and the use safety of the respirator is influenced. In addition, the respirator needs to be provided with a corresponding air quantity gear according to the type of the connected breathing mask to adapt to the selected closed mask or open mask. In actual use, the air volume is possibly insufficient due to manual wrong setting, and the protection effect of the respirator is influenced.
Therefore, how to improve the safety and applicability of respirators is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides an electronic air supply respirator equipped with baroceptor, through adopting a plurality of baroceptor, monitor filter screen resistance and forced draught blower wind pressure in the respirator, help realizing the monitoring alarm function to filter element resistance and respirator total respiratory resistance, the forced draught blower is based on the type automatically regulated amount of wind of the respirator that the air outlet is connected, and when the work is unusual such as filter element jam degree height, air outlet resistance too big, send out the police dispatch newspaper in time to the user through display screen, buzzer siren, reliability in the use of power air supply filtering respirator has been improved; simultaneously the utility model discloses a control panel of electronic air supply respirator provides two kinds of wireless network connection of WIFI and bluetooth, helps user of service accessible wireless network to set up the control panel procedure to normal operating range and the alarm value that suit are set up according to the filter element who uses, improve the precision and the convenience in use of filter element jam degree monitoring, have improved the suitability of filter element consumptive material.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an electric air supply respirator equipped with an air pressure sensor comprises a filter element, a main machine front panel, a rear shell and a breathing mask; the front panel of the host is provided with an air inlet, an air pressure sensor, a blower and a control panel;
the filter element is fastened and fixed on the front side of the front panel of the host machine, and the air inlet is positioned on one side of the front panel of the host machine, which is fastened with the filter element;
the air feeder and the control panel are arranged on the back plate of the front panel of the host machine, the air inlet of the air feeder extends to the air inlet, and the air outlet extends out of the upper side surface of the front panel of the host machine;
the air pressure sensor and the air feeder are electrically connected with the control board;
the rear shell is buckled at the rear side of the front panel of the host machine and covers the air feeder and the control panel;
the air outlet pipeline is connected with the breathing mask.
The technical effect of the technical scheme is that the air pressure between the filter element and the front panel of the host is collected through the air inlet air pressure sensor, namely the air pressure value near the air inlet, the air pressure value near the air outlet of the air blower is collected through the air outlet air pressure sensor, the blockage degree of the filter element is monitored according to the measured static pressure difference, and the resistance of the filtered clean air is monitored, so that the flow of the air blower is automatically adjusted, and the proper type of the breathing mask can be selected according to the current measurement.
Preferably, the air pressure sensor comprises an air blower front end air pressure sensor, the air blower front end air pressure sensor is located on a main engine front panel area where a main engine front panel sealing edge and an air inlet are located, the air blower front end air pressure sensor is embedded into the main engine front panel, and the measuring end is located in an area surrounded by the air inlet and the sealing edge on the main engine front panel. The air pressure of the air feeder during the static state and the working state is measured by an air pressure sensor at the front end of the air feeder, and the blocking degree of the electric air-feeding respirator is judged according to the pressure difference value.
Preferably, the air pressure sensor comprises an air pressure sensor at the rear end of the air feeder and is positioned on the air outlet pipeline of the air feeder, and the measuring end is embedded into the air outlet pipeline of the air feeder. The device is used for measuring the static pressure of an air outlet pipeline of the air feeder, the rear-end air pressure sensor of the air feeder is positioned at the rear end of a fan impeller or on an exhaust pipeline, the pipeline connected with an air outlet is different in resistance characteristics of breathing masks, air pressure values of breathing masks of different models after being connected with the air outlet pipeline are different, the breathing masks are firstly at a specified rotating speed after being started, the air pressure values of the air feeder at rest and during working, which are acquired by a burning program on a control board through the read rear-end air pressure sensor of the air feeder, are subtracted to obtain a static pressure difference value, filtered clean air resistance is judged, the models of the breathing masks needing to be configured are judged by combining with a stored data value, the stored data value is the range of the filtered clean air resistance values corresponding to the breathing masks of different models at a certain rotating speed, the air flow rate is changed by adjusting the rotating speed of the air feeder, and the optimal working flow rate adjustment suitable for the breathing masks of different models is realized.
Preferably, the air pressure sensor comprises a front end air pressure sensor of the air blower and a rear end air pressure sensor of the air blower; the front-end air pressure sensor of the air feeder is positioned on the sealing edge of the front panel of the host and the region of the front panel of the host where the air inlet is positioned, and is embedded into the front panel of the host, and the measuring end is positioned in the region surrounded by the air inlet and the sealing edge on the front panel of the host; the air pressure sensor at the rear end of the air feeder is positioned on the air outlet pipeline of the air feeder, and the measuring end is embedded into the air outlet pipeline of the air feeder. The air pressure of the air inlet and the air pressure of the air outlet are measured when the air feeder works, so that a static pressure difference value is obtained, and the filtered clean air resistance is judged.
Preferably, the upper side surface of the front panel of the host is also provided with a trigger device, and the trigger device is electrically connected with the control panel; the triggering means comprises a control button. The electric air supply respirator is triggered to work by the trigger device.
Preferably, a debugging interface is further arranged, is positioned on the surface of the rear shell and is electrically connected with the control board. The device is used for debugging the working parameters of the electric air supply respirator.
Preferably, a rechargeable battery is further provided, fixed to the rear side of the front panel of the host, and electrically connected to the control board.
Preferably, the display screen is arranged on the upper side face of the front panel of the host and is electrically connected with the control panel. The alarm device is used for displaying the residual capacity of the rechargeable battery, the blockage degree of the filter element and alarm information.
Preferably, the control panel comprises an integrated main control chip, a buzzer and a vibrating motor; the integrated main control chip integrates a wireless network module and a Bluetooth module; the buzzer and the vibration motor are electrically connected with the integrated main control chip. The wireless network module and the Bluetooth module are used for setting and upgrading a remote control program of the control panel, and the buzzer and the vibrating motor can perform sound alarm and vibration reminding.
Preferably, the form of the filter element is not limited to the material and housing geometry of the filter screen, including a pleated particulate filter screen and/or a canister.
A method of monitoring a powered air-breathing apparatus equipped with an air pressure sensor, comprising the steps of:
step 1: collecting air pressure values of the electric air supply respirator when the electric air supply respirator is static and works;
step 2: making difference values of different air pressure values to obtain static pressure difference values;
and step 3: and judging the working state of the electric air supply respirator according to the static pressure difference value, adjusting the rotating speed of the air supply blower and selecting a matched breathing mask.
Preferably, the front-end air pressure sensor of the air blower measures the air pressure static pressure value when the air blower is static and the air pressure static pressure value when the air blower runs at a set rotating speed respectively, the air pressure static pressure value is subtracted to obtain a blockage static pressure difference value, the blockage static pressure difference value corresponds to the blockage degree of the filter element of the electric air-blowing respirator, the blockage degree of the filter screen of the filter element is in direct proportion to the blockage static pressure difference value, and the blockage degree can be judged according to the blockage static pressure difference value.
Preferably, when the air feeder runs at a set rotating speed, the air pressure sensor at the front end of the air feeder and the air pressure sensor at the rear end of the air feeder are used for measuring an air pressure static pressure value at an air inlet and an air pressure static pressure value at an air outlet respectively, a resistance static pressure difference value is obtained by difference, then the resistance static pressure difference value is obtained by difference with a blocking static pressure difference value obtained only through measurement of the air pressure sensor at the front end of the air feeder, the corresponding relation exists between the resistance static pressure difference value and the filtered clean air resistance, and the filtered clean air resistance is in direct proportion to the resistance static pressure difference value, so that the filtered clean air resistance can be judged through the resistance static pressure difference value.
Preferably, the air pressure sensor at the rear end of the air feeder measures an air outlet air pressure static pressure value of an air outlet pipeline of the air feeder when the air feeder is static, the air feeder works at different rotating speeds to correspondingly generate different air outlet air pressure static pressure values of the air outlet pipeline of the air feeder, the air outlet air pressure static pressure value is different from the air outlet air pressure static pressure value (namely, the current atmospheric pressure value) when the air feeder is static during operation to obtain filtered clean air resistance, breathing masks of different models can be judged and selected to be adapted according to the value, and the working flow can be adjusted by adjusting the rotating speed of the air feeder according to working requirements.
According to the technical scheme, compared with the prior art, the utility model discloses an electric air supply respirator provided with air pressure sensors, which utilizes a plurality of air pressure sensors to realize the monitoring of the blocking degree of a filter element and the resistance of an air outlet, and timely sends out an alarm to users through a display screen and a buzzer alarm when the filter element is in abnormal working conditions such as high blocking degree, overlarge resistance of the air outlet and the like; and judging the type of the connected breathing mask by utilizing the measured resistance of the air outlet, and correspondingly adjusting the rotating speed of the air feeder to realize automatic flow adjustment. The control panel provides two kinds of wireless network connection modes of WIFI and bluetooth simultaneously, and user of service accessible wireless network sets up the control panel procedure, sets up adapted normal working range and alarm value according to the filter element that actually uses, has improved the precision of filter element jam degree monitoring and the facility of use, has improved the suitability of filter element consumptive material.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of an electric air-supply respirator equipped with an air pressure sensor according to the present invention;
FIG. 2 is an exploded view of the electric air respirator with an air pressure sensor according to the present invention;
FIG. 3 is a front view of a front panel of a main frame of the electric air supply respirator of the present invention;
FIG. 4 is a rear view of a front panel of a main frame of the respirator with electric air supply provided by the present invention;
FIG. 5 is a front view of the powered air-supplying respirator of the present invention;
FIG. 6 is a left side view of the powered air-supplying respirator of the present invention;
FIG. 7 is a right side view of the powered air-supplying respirator of the present invention;
fig. 8 is a top view of the powered air-supplying respirator provided by the present invention.
In the drawings: 1-filter element, 2-front panel of host, 21-air inlet, 22-air blower front-end air pressure sensor, 23-air blower, 231-air outlet, 24-air blower rear-end air pressure sensor, 25-control panel, 26-control button, 27-debugging interface, 28-rechargeable battery, 29-display screen and 3-back shell.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
The embodiment of the utility model discloses an electric air supply respirator equipped with an air pressure sensor, the whole structure is shown in figure 1, the components are shown in figure 2, and the respirator comprises a filter element 1, a front panel 2 of a main machine, a rear shell 3 and a breathing mask; the front panel 2 of the main machine is provided with an air inlet 21, an air pressure sensor, a blower 23 and a control panel 25; the filter element 1 is buckled and fixed on the front side of the front panel 2 of the host, and the air inlet 21 is positioned on one side of the front panel 2 of the host, which is buckled with the filter element 1; the blower 23 and the control panel 25 are arranged at the rear side of the front panel 2 of the host, the air inlet of the blower extends to the air inlet 21, and the air outlet 231 extends out of the upper side surface of the front panel 2 of the host; the air pressure sensor and the blower 23 are both electrically connected with the control board 25; the rear shell 3 is buckled at the rear side of the front panel 2 of the main machine, and seals the air feeder 23 and the control panel 25; the air outlet 231 is connected with the breathing mask through a pipeline.
Example 1
As shown in the figure, the utility model discloses when electronic air supply respirator used, will electronic air supply respirator's filter element 1 and backshell 3 all through buckle mode fixed mounting on host computer front panel 2, extrude each other and realize sealedly. The filter element 1 is not limited to the geometry shown in the figures. The rechargeable battery 28 is arranged on the back side surface of the front panel 2 of the main machine and is connected to the control panel 25, and the rechargeable battery 28 is positioned inside the rear shell 2 after the front panel 2 of the main machine is buckled with the rear shell 3 and is used as the power supply of the respirator. Be provided with integral type main control chip on the control panel 25, the model is ESP32, has integrateed WIFI wireless network and bluetooth transmission function, burns to write and stores the control program.
A user selects the model of the filter element 1 preset in a program burned in the control panel 25 through the control button 26 on the front panel 2 of the host machine, the power supply of the blower 23 is started, then the blower 23 inside the front panel 1 of the host machine is started, negative pressure is formed at the air inlet 21, due to the negative pressure inside the respirator, after air is filtered by the filter element 1, pollutants such as particulate matters in the air are filtered and adsorbed, then, the air is sucked into the air inlet 21 under the cleaning control, and after the air is pressurized by the rotation of the blower 23, the air is discharged from the air outlet 231 and is supplied to the user for breathing in a pipeline mode and the like.
When the electric air supply respirator works, the program of the control panel 25 reads the real-time electric quantity value of the rechargeable battery 28, the display screen 29 displays the residual electric quantity value in the form of graphic representation and characters, when the real-time electric quantity value is lower than the preset value of the program, the display screen 29 displays the alarm information of insufficient electric quantity, a buzzer on the control panel 25 simultaneously sends out alarm sound according to the preset electric quantity buzzing alarm frequency, the vibration motor on the control panel 25 is started, and the vibration formed according to the preset electric quantity vibration alarm frequency during the operation of the vibration motor gives an alarm to users.
Example 2
The utility model discloses possess filter element's jam degree monitoring and alarming function, the embodiment as follows:
the air pressure sensor comprises an air pressure sensor 22 at the front end of the blower, the air pressure sensor is positioned on the region of the front panel of the host where the sealing edge and the air inlet 21 of the front panel 2 of the host are positioned, the air pressure sensor is embedded into the front panel 2 of the host, the measuring end is positioned in the region surrounded by the air inlet 21 and the sealing edge on the front panel 2 of the host, and the signal line of the air pressure sensor is connected to the control panel 25.
After the electric air supply respirator is started, the air blower 23 is firstly in a stop state, the program arranged in the control board 25 measures the current static pressure value P0, namely the atmospheric pressure value, through the air pressure sensor 22 at the front end of the air blower, and then the program controls the air blower 23 to be started and operated at a specified rotating speed, the air pressure of the space between the filter element 1 and the front panel 2 of the main machine is negative due to the suction force of the air blower 23, and the air pressure sensor 22 at the front end of the air blower monitors and measures the static pressure value P1 at the position. The program calculates a difference P2 between the static pressure value P0 before starting and the static pressure value P1 when the blower 23 is operating, as a resistance value of the air flowing through the filter element 1, and compares the difference with the resistance P3 of the non-clogging filter element at the rotation speed, which is stored in the program in advance and is measured through experiments, to determine the clogging degree of the filter element 1. When the electric air supply respirator operates, the program control of the control panel 25 displays the blockage degree on the display screen 29 connected to the control panel 25 in real time in the form of graphic and text information, so that the user can conveniently check the blockage degree.
When the blocking degree of the filter element 1 is larger than the preset value in the program, the display screen 20 displays alarm information in the form of graphic and text information, meanwhile, the buzzer on the control panel 25 sends out alarm sound according to the preset blocking buzzer alarm frequency, the vibrating motor on the control panel 25 is started, and the user is warned according to the vibration formed by the preset blocking alarm vibration frequency when the vibrating motor operates.
Example 3
The utility model discloses utilize baroceptor to realize filtering back clean air's resistance monitoring function, the embodiment is as follows:
the air pressure sensor comprises a front end air pressure sensor 22 of the air blower and a rear end air pressure sensor 24 of the air blower; the front end air pressure sensor 22 of the blower is positioned on the sealing edge of the front panel 2 of the host and the area of the front panel 2 of the host where the air inlet 21 is positioned, and is embedded into the front panel 2 of the host, and the measuring end is positioned in the area surrounded by the air inlet 21 and the sealing edge on the front panel 2 of the host; the air pressure sensor 24 at the rear end of the blower is positioned on the air outlet pipeline of the blower 23, and the measuring end is embedded in the air outlet pipeline of the blower.
When the blower 23 of the electric blowing respirator operates at a specified rotating speed, the rear end air pressure sensor 24 of the blower positioned on the air outlet 231 pipeline of the blower 23 measures the static pressure value P4 in the pipeline of the blower 23 at the position in real time, and a program in the control board 25 calculates the difference between the static pressure value P4 measured by the rear end air pressure sensor 24 of the blower and the static pressure value P1 measured by the front end air pressure sensor 22 of the current blower to obtain the inlet and outlet air pressure static pressure difference P5, namely P5= P4-P1. Because the air is a closed pipe network from the air inlet 21 to the air outlet 231, the flow basically has no loss, the dynamic pressure difference of the inlet and the outlet is neglected, and the static pressure value P5 can be approximately used as the wind pressure head when the blower 23 operates.
The wind pressure head, i.e. the working capacity, is determined by the dynamic pressure and the static pressure. The dynamic pressure is decided by the velocity of flow, but because the area of actual air intake and air outlet area are not completely unanimous, so the actual dynamic pressure of importing and exporting can not equal completely, the utility model discloses in mainly realize the discrimination function through the static pressure, neglect the influence of dynamic pressure from the engineering reality, utilize static pressure difference and resistance directly proportional to realize deciding.
The pressure head of the air blower 23 in the pipeline is equal to the resistance of air flowing through all the pipelines, which is also known according to the fluid mechanics principle, although a certain error exists between the fluid mechanics theoretical value and the actual application acquisition value, the error can be ignored, or the air pressure head is obtained by experiment in advance and stored in a program to be used as a preset reference value, and then the resistance monitoring and judgment are realized according to the proportional relation between the resistance and the static pressure. Wherein, all the duct resistances include the resistance of the filter element 1, the duct resistance between the air inlet 21 and the air outlet 231, and the resistance values of the user connecting to the duct at the rear end of the air outlet 231, the breathing mask and other accessories. The resistance of the filter element 1 is a static pressure difference P2, which is a difference P2 between the static pressure P0 before the start and the static pressure P1 when the blower 23 is operated. The control board 25 calculates the difference between the total duct resistance static pressure value P5 and the filter element 1 resistance static pressure value P2 by program operation, and obtains an approximate resistance value P6 of the remaining ducts except the filter element resistance value, i.e., P6= P5-P2.
When a user connects a pipeline, a breathing mask and other accessories to the rear end of the air outlet 21 for breathing, the structure between the air inlet 21 and the air outlet 231 is unchanged, the pipeline resistance is in direct proportion to the air quantity, namely, the pipeline resistance coefficient between the air inlet 21 and the air outlet 231 is unchanged, the rotating speed of the air feeder is constant, the resistance is increased to influence the flow reduction, the flow reduction also influences the resistance reduction of a fixed pipeline structure, the dynamic balance is realized, but the total resistance is still increased, and the change of the resistance value P6 is mainly influenced by the pipeline, the mask and other accessories connected with the rear end of the air outlet 231. The control board 25 runs a program to compare a reference resistance value stored in the program in advance with the size of P6 to obtain an increase or decrease value of P6, and performs resistance monitoring judgment.
When the P6 increases and exceeds the prestored allowable range value, the pressure of accessories such as a pipeline, a breathing mask and the like connected with the rear end of the air outlet 231 is judged to exceed the upper limit, information such as overlarge breathing resistance and insufficient air flow is displayed in the form of graphic and text information through the display screen 29, the buzzer on the control board 25 sends out alarm sound at the same time according to the preset resistance buzzing alarm frequency, the vibrating motor on the control board 25 is started, and the alarm is sent to a user according to the vibration formed by the preset resistance vibrating alarm frequency when the vibrating motor runs.
When the change of the P6 is reduced and exceeds the allowable range value, it is determined that the pressure value of the accessory such as the pipeline and the breathing mask connected to the rear end of the air outlet 231 is too low, and the leakage is mainly caused by the unsealed connection of the pipeline and the breathing mask. The program displays the alarm information of the connection failure and leakage at the rear end of the air port 231 in the form of graphic and text information through the display screen 29, the buzzer on the control panel 25 buzzes the alarm frequency according to the preset pressure and simultaneously gives an alarm, the vibration motor on the control panel 25 is started, and the vibration formed by the vibration alarm frequency according to the preset pressure when the vibration motor operates gives an alarm to a user.
Further optimizing the above specific technical solution, the graphics of the display screen can distinguish different alarms. In addition, according to different alarm reasons, the alarm is distinguished through the combination setting of different frequencies and durations of the buzzer and the vibrating motor. For example: when the electric quantity is insufficient, short 3-sound buzzing is performed, and alarm is repeated. When the alarm is blocked, the alarm can be given by buzzing or vibrating with 2 length and 1 short length. If 2 or more alarms exist at the same time, the alarms alternate with each other.
Example 4
The air pressure sensor comprises an air pressure sensor 24 at the rear end of the air feeder, the air pressure sensor is positioned on an air outlet pipeline of the air feeder 23, and the measuring end is embedded into the air outlet pipeline of the air feeder. The air pressure of the air outlet of the electric air supply respirator during the non-working and working processes is measured respectively, the air pressure is subjected to subtraction to obtain the filtered clean air resistance, the proper breathing mask is matched according to the filtered clean air resistance, the rotating speed of the air feeder 23 is adjusted according to the requirement, and therefore the air quantity is adjusted.
Example 5
The utility model discloses can utilize the model of the respirator that baroceptor discernment air outlet is connected, the automatically regulated amount of wind, concrete implementation process as follows:
as described in embodiment 3, when the blower 23 of the electrical air-breathing apparatus operates at a specified rotational speed, and when a user connects an accessory such as a duct or a breathing mask to the rear end of the air outlet 21 for breathing, since the structure between the air inlet 21 and the air outlet 231 is unchanged and the duct resistance is in direct proportion to the air volume, that is, the duct resistance coefficient between the air inlet 21 and the air outlet 231 is unchanged, the rotational speed of the blower is fixed, the increase in resistance affects the decrease in flow, the decrease in flow affects the decrease in resistance of the fixed duct structure, and dynamic balance is achieved, but the total resistance is still increased, and at this time, the change in resistance value P6 is mainly affected by the accessory such as the duct or mask connected to the rear end of the air outlet 231; and the pipeline type and the length that the air outlet 231 back end is connected are fixed, and the change of P6 is mainly influenced by respirator's resistance change, and the difference of used respirator type leads to P6 to change promptly, and P6 and respirator's resistance are directly proportional at this moment.
Because the corresponding pipe network resistance characteristics of different types of open type face masks, closed type face masks and the like are different, the resistance of the breathing face mask under different rotating speeds of the air feeder, namely the static pressure value, is measured in advance through experiments; the proportional coefficient is multiplied and a certain tolerance range is given as resistance parameter data to be stored in advance in the program of the control board 25.
When the respirator is in operation, the program of the control board 25 determines the type of the currently used respirator by comparing the P6 value with the corresponding resistance parameter ranges of different types of respirators stored in the program in advance. The optimum performance rotating speed values of the air feeder corresponding to the breathing masks of various models are stored in a program in advance. And the program of the control board 25 adjusts the rotating speed of the blower to the optimal performance rotating speed value corresponding to the type of the mask according to the identified type of the breathing mask, so that the functions of identifying the breathing mask and automatically adjusting the air volume are realized.
Example 6
The utility model discloses can realize filter element's adaptation function and equipment modification upgrading function, the concrete implementation process as follows:
in actual use of the electric air supply respirator, the filter element 1 has various specifications and different values of the resistance of the filter screen. In order to adapt the respirator to the various operating conditions of the filter element 1. The side of the rear shell 3 of the respirator is provided with a commissioning interface 27, connected to the control board 25. The user can connect external computers and other equipment to the debugging interface 27 through the data line, set and upgrade the built-in program of the control panel 25, add different resistance values of the filter elements to the program, or modify other preset working parameters, thereby adapting to the filter elements 1 with different specifications.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An electric air supply respirator equipped with an air pressure sensor is characterized by comprising a filter element, a front panel of a main machine, a rear shell and a breathing mask; the front panel of the host is provided with an air inlet, an air outlet, an air pressure sensor, an air feeder and a control panel;
the filter element is buckled and fixed on the front side of the front panel of the host, and the air inlet is positioned on one side of the front panel of the host buckled with the filter element;
the air feeder and the control panel are arranged on the back plate of the front panel of the host, the air inlet of the air feeder extends to the air inlet, and the air outlet extends out of the upper side surface of the front panel of the host;
the air pressure sensor and the air feeder are electrically connected with the control board;
the rear shell is buckled at the rear side of the front panel of the main machine and seals the air feeder and the control panel;
the air outlet is connected with the breathing mask.
2. The respirator of claim 1, wherein the air pressure sensor comprises a front air pressure sensor embedded in the front panel of the main unit in an area of the front panel of the main unit where the sealing edge and the air inlet are located, and a measuring end located in an area surrounded by the air inlet and the sealing edge on the front panel of the main unit.
3. The electrically powered blower-respirator equipped with an air pressure sensor according to claim 1, wherein the air pressure sensor comprises a blower rear end air pressure sensor located on the blower outlet duct, the measuring end being embedded in the blower outlet duct.
4. The electrically powered air-breathing apparatus equipped with an air pressure sensor as recited in claim 1, wherein the air pressure sensor includes a blower front end air pressure sensor and a blower rear end air pressure sensor; the air pressure sensor at the front end of the air feeder is positioned on the sealing edge of the front panel of the host and the area of the front panel of the host where the air inlet is positioned, and is embedded into the front panel of the host, and the measuring end is positioned in the area surrounded by the air inlet and the sealing edge on the front panel of the host; the air pressure sensor at the rear end of the air feeder is positioned on the air outlet pipeline of the air feeder, and the measuring end is embedded into the air outlet pipeline of the air feeder.
5. The electrically powered air-supplying respirator equipped with an air pressure sensor as claimed in claim 1, wherein the main unit front panel is further provided with a triggering device, and the triggering device is electrically connected with the control board.
6. An electrically powered, air-breathing apparatus equipped with an air pressure sensor as claimed in claim 1 wherein a commissioning interface is provided on the rear housing surface and electrically connected to the control board.
7. An electrically powered, forced-air respirator equipped with an air pressure sensor, according to claim 1, further provided with a rechargeable battery secured to the rear side of the front panel of the main unit and electrically connected to the control board.
8. The electrically powered air-breathing apparatus equipped with an air pressure sensor as recited in claim 1 wherein a display screen is provided on the upper side of the main unit front panel and electrically connected to the control board.
9. The electrically powered air breathing apparatus equipped with an air pressure sensor as claimed in claim 1 wherein the control board includes an integral main control chip, a buzzer and a vibration motor; the integrated main control chip integrates a wireless network module and a Bluetooth module; the buzzer and the vibration motor are electrically connected with the integrated main control chip.
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| CN202221347901.4U CN217645690U (en) | 2022-05-31 | 2022-05-31 | Electric air supply respirator equipped with air pressure sensor |
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| CN202221347901.4U CN217645690U (en) | 2022-05-31 | 2022-05-31 | Electric air supply respirator equipped with air pressure sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114984475A (en) * | 2022-05-31 | 2022-09-02 | 安徽华赛防护用品科技有限公司 | Electric air supply respirator equipped with air pressure sensor and monitoring method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114984475A (en) * | 2022-05-31 | 2022-09-02 | 安徽华赛防护用品科技有限公司 | Electric air supply respirator equipped with air pressure sensor and monitoring method |
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