CN219083368U - Double-fan multistage filtering air supply device with failure alarm function - Google Patents

Abstract

The utility model relates to a double-fan multistage filtering air supply device with failure alarm, and belongs to the technical field of forced air supply of a respiratory protection device. The utility model is composed of a case, a filter element, a fan, an alarm, an electric control device and the like, two fans are arranged in the case through independent chambers, so that the case can be used by a plurality of people at the same time, the air inlet of the fan is provided with three-stage filter elements, unfiltered dirty air is prevented from entering the fan, the fan is also provided with a torque monitoring function, when the filter layer of the filter element adsorbs more impurity particles, the air resistance passing through the filter layer is increased, the torque of the fan is increased, and when the torque of the fan reaches a set limit value, sound and flickering alarm are given out, a user is reminded to stop to replace a new filter element, and damage caused by overlarge torque of the fan is avoided. The air supply device solves the problems that air sucked by an air inlet of the existing air supply device is not filtered, and dirty air is sent into the breathing device to cause injury to a user and has no alarm function.

Description

Double-fan multistage filtering air supply device with failure alarm function

Technical Field

The utility model relates to a double-fan multistage filtering air supply device with failure alarm, and belongs to the technical field of forced air supply of a respiratory protection device.

Background

The existing breathing protective mask used by people has complex environments in the use places, dirty air around the places and even harmful gas; in order to effectively isolate the outside toxic and harmful gases, the filter body of the protective mask is internally provided with filter materials such as activated carbon; although the protective mask meets the requirement of effectively isolating the outside toxic and harmful gases, the protective mask also has another problem that users feel oppressed after wearing the protective mask for a long time, and the users cannot breathe smoothly. In order to solve the problem, people add a forced air supply device in the existing respiratory protection device to increase the air flow speed in the mask and ensure smooth air flow, thereby reducing the respiratory resistance of the wearer and effectively improving the wearing comfort of the user.

The prior forced air supply device has various types and different structures, but the air sucked by the air inlet of the prior forced air supply device is not filtered, and even if the prior forced air supply device has a filtering structure, the prior forced air supply device adopts active carbon and filter cotton to simply filter the air at the air inlet, for example, the prior forced air supply device disclosed in the patent document with the publication number of CN 205759192U is provided with the filtering device in the air inlet, and the filtering device consists of the active carbon and the filter cotton. The filtering device has limited filtering effect, the outside polluted air is still sent into the respiratory protection device, the filtering device is blocked due to a slightly long service time, the air supply capacity is obviously reduced, and certain injury is brought to a user. In addition, the existing air supply devices are all fans, and one air supply device can only be used by 1-2 persons due to limited air supply quantity, so that when the working area is large and the number of operators is large, a plurality of air supply devices are required to be placed, and the matched devices on the working site are complicated.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides the double-fan multistage filtering air supply device with failure alarm, wherein two fans are arranged in a box body of the air supply device through independent cavities, three layers of filter elements are designed at the front end of an air inlet of each fan, a torque monitoring device is arranged on each fan, and after a filter layer adsorbs more impurity particles, the torque monitoring device can give out sound and flash alarm to remind a user of timely replacing the filter elements.

The utility model realizes the aim through the following technical scheme:

the double-fan multistage filtering air supply device with the failure alarm comprises a case, a filter element, a fan, an air pipe connecting seat, an alarm, a control panel and an electrical control device, and is characterized in that: the machine case is of an upper layer and a lower layer, the upper layer is an electric element layer, the lower layer is a fan and a filter element layer, and the upper layer and the lower layer are separated independent chambers; a filter element is arranged on one side of the lower layer of the case, a fan is arranged on the other side of the lower layer of the case, an air inlet of the fan is in butt joint with the filter element, and an air pipe connecting seat is arranged on an air outlet of the fan; an electrical control device is arranged on the upper layer of the case; an alarm and a control panel are arranged on the outer surface of one side of the upper layer of the case close to the fan.

The filter element consists of a primary filter layer, a secondary filter layer and a tertiary filter layer, wherein the primary filter layer is a coarse filter layer, the primary filter layer consists of a framework and a HEPA filter material, and the framework is fixed on the periphery of the HEPA filter material; the secondary filter layer is an odor adsorption layer and consists of a framework, activated carbon particles and a HEPA filter material, wherein the activated carbon particles are arranged in the HEPA filter material, and the framework is fixed on the periphery of the HEPA filter material; the three-stage filter layer is a fine filter layer and consists of a framework and a high-efficiency low-resistance HEPA filter material, and the framework is fixed on the periphery of the high-efficiency low-resistance HEPA filter material.

The two fans are respectively placed in a left cavity and a right cavity at the lower layer of the chassis, the left cavity and the right cavity form two independent cavities through the partition plate, and the fans are centrifugal fans.

The air pipe connecting seat is of a hollow structure, one end of the air pipe connecting seat is an open end, the open end is sleeved with an air outlet of the fan, at least one air outlet is formed in the other end of the air pipe connecting seat, and threads are formed in the outer surface of the air outlet.

The control panel comprises a main power switch, a main power indicator, a fan a starting switch, a left fine filter timing zero-clearing button, a fan a speed regulating knob, a fan b starting switch, a right fine filter timing zero-clearing button and a fan b speed regulating knob, wherein the main power switch and the main power indicator are electrically connected with an external power supply, the fan a starting switch, the fan a speed regulating knob and the fan b starting switch, and the fan b speed regulating knob are electrically connected with a left fan and a right fan respectively, and the left fine filter timing zero-clearing button and the right fine filter timing zero-clearing button are electrically connected with a display screen respectively.

The electric control device comprises an electric control plate, a direct current power supply and an L-shaped partition board, wherein the electric control plate and the direct current power supply are fixed on the upper layer of the case, and the electric control plate and the direct current power supply are separated through the L-shaped partition board.

The alarm and the control panel are electrically connected with the electric control device.

The filter element comprises a first-stage filter layer, a second-stage filter layer and a third-stage filter layer, wherein a space is arranged among the first-stage filter layer, the second-stage filter layer and the third-stage filter layer, and the space distance is 10-20 mm.

And a lifting handle is arranged on the upper surface of the case.

A power supply heat dissipation grid is manufactured at the place of the chassis, where the direct-current power supply is arranged, and an electric control plate heat dissipation grid is manufactured at the place of the chassis, where the electric control device is arranged; a filter replacement window is formed in the position, provided with the filter element, of the chassis, and an air inlet grid is arranged at the air inlet of the filter element.

Compared with the prior art, the utility model has the beneficial effects that:

the two fans are arranged in the box body of the air supply device through separate chambers, four air outlets are formed, the two fans are not interfered with each other, and the two fans can be used by multiple people at the same time. The front end of the air inlet of the fan is provided with a three-stage filter element, and the first layer is a coarse filter layer which can filter dust, fluff, pollen and the like with larger particles in the air; the second layer is an odor adsorption layer which can adsorb odor in the air, such as putrescence odor, pungent odor and the like; the third layer is a fine filter layer, so that dust, bacteria, smoke dust and the like with smaller particles can be blocked, and dirty air which is not sufficiently filtered is prevented from entering the fan. The centrifugal fan of the filtering air supply device is also provided with a torque monitoring function, when the filter layer of the filtering element adsorbs more impurity particles, the air resistance through the filter layer is increased, the air quantity at the air inlet of the centrifugal fan is decreased, the torque of the centrifugal fan is increased, when the torque reaches a set limit value, the filtering element of the filtering air supply device fails, then sounds and flashes to give an alarm, a user is reminded to stop for replacing a new filtering element, and damage caused by overlarge torque of the fan is avoided. The utility model solves the problems that the air sucked by the air inlet of the existing air supply device is not filtered, so that the outside dirty air is sent into the respiratory protection device, a certain injury is brought to a user, and the fan torque is overlarge and damage is caused by no alarm function.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic side perspective view of the present utility model with two fans and a filter layer;

FIG. 3 is a schematic top perspective view of the present utility model with two fans and a filter layer;

FIG. 4 is a schematic diagram of the front view structure of the present utility model;

FIG. 5 is a schematic top cross-sectional view of the present utility model;

FIG. 6 is a schematic side view of the present utility model;

FIG. 7 is a schematic side cross-sectional view of the present utility model;

FIG. 8 is a schematic rear view of the present utility model;

fig. 9 is a top cross-sectional view of an electrical component layer of the present utility model;

FIG. 10 is a diagram showing the alarm control operation of the alarm.

In the figure: 1. the device comprises a case, 101, a partition board, 102, a left chamber, 103, a right chamber, 104, an upper layer, 105, a lower layer, 106, a foot pad, 107, a power supply heat dissipation grid, 108, a power socket, 109, an air inlet grid, 110, an electric control board heat dissipation grid, 111, a filter replacement window, 2, a primary filter layer, 3, a secondary filter layer, 4, a tertiary filter layer, 5, a fan, 6, an air pipe connecting seat, 601, an air outlet, 7, an alarm, 8, a display screen, 9, a control panel, 901, a main power switch, 902, a main power indicator, 903, a fan a start switch, 904, a left fine filter timing clear key, 905, a fan a speed regulation knob, 906, a fan b start switch, 907, a right fine filter timing clear key, 908, a fan b speed regulation knob, 10, an electric control device, 1001, an electric control board, 1002, a direct current power supply, a handle 1003, an L-shaped partition board, 11 and 11.

Detailed Description

The utility model is further described below with reference to fig. 1-9 as follows:

the double-fan multistage filtering air supply device with the failure alarm comprises a case 1, a filter element, a fan 5, an air pipe connecting seat 6, an alarm 7, a control panel 9 and an electric control device 10, wherein the case 1 is of an upper layer and a lower layer, the upper layer is an electric element layer, the lower layer is a fan and a filter element layer, and the upper layer and the lower layer are separate independent chambers.

A filter element is arranged on one side of the lower layer of the case 1, the filter element is composed of a primary filter layer 2, a secondary filter layer 3 and a tertiary filter layer 4, and a space is arranged among the primary filter layer 2, the secondary filter layer 3 and the tertiary filter layer 4, and the space distance is 10-20 mm; a filter replacement window 111 is formed in the place where the filter element is installed in the case 1, and an air inlet grid 109 is installed at the air inlet of the filter element. The first-level filter layer 2 is a coarse filter layer, the first-level filter layer 2 is composed of a framework and a HEPA filter material, and the framework is fixed on the periphery of the HEPA filter material so as to ensure the shaping of the HEPA filter material; the secondary filter layer 3 is an odor adsorption layer, the secondary filter layer 3 is composed of a framework, active carbon particles and HEPA filter materials, the active carbon particles are uniformly distributed in the HEPA filter materials to adsorb odor, and the framework is fixed on the periphery of the HEPA filter materials to ensure the shaping of the HEPA filter materials; the three-stage filter layer 4 is a fine filter layer, the three-stage filter layer 4 is composed of a framework, and the framework is fixed on the periphery of the efficient low-resistance HEPA filter material so as to ensure the shaping of the HEPA filter material.

A fan 5 is arranged on the other side of the lower layer of the case 1, and the fan 5 is a centrifugal fan; the two fans 5 are respectively arranged in a left cavity 102 and a right cavity 103 at the lower layer of the chassis 1, the left cavity 102 and the right cavity 103 form two independent cavities through the partition plate 101, and the fans 5 of the two independent cavities can work independently and are not interfered with each other. The air inlet of the fan 5 is in butt joint with the filter element, the air outlet of the fan 5 is provided with the air pipe connecting seat 6, the air pipe connecting seat 6 is of a hollow structure, one end of the air pipe connecting seat 6 is an open end, the open end is sleeved with the air outlet of the fan 5, the other end of the air pipe connecting seat 6 is provided with four air outlets 601, threads are formed on the outer surface of the air outlets 601, and the air pipe connecting seat is convenient to be connected with an air supply pipe.

An electric control device 10 is arranged on the upper layer of the case 1, and the electric control device 10 comprises an electric control board 1001, a direct current power supply 1002 and an L-shaped partition 1003, wherein the electric control board 1001 and the direct current power supply 1002 are separated by the L-shaped partition 1003; a power supply heat dissipation grid 107 is manufactured at the place where the direct current power supply 1002 is arranged in the case 1, and an electric control board heat dissipation grid 110 is manufactured at the place where the electric control device 10 is arranged; an alarm 7 and a control panel 9 are arranged on the outer surface of one side, close to the fans, of the upper layer of the case 1, the control panel 9 comprises a main power switch 901, a main power indicator 902, a fan a starting switch 903, a left fine filter timing clear key 904, a fan a speed regulating knob 905, a fan b starting switch 906, a right fine filter timing clear key 907 and a fan b speed regulating knob 908, wherein the fan a is one on the left side of two fans 5, and the fan b is one on the right side of the two fans 5; the fan a starting switch 903 controls the start and stop of the fan a, the fan a speed regulating knob 905 regulates the rotation speed of the fan a to linearly regulate between 80% and 99% of a set value, and the function of the left fine filter timing zero clearing key 904 is that when a left new filter element is replaced, the key is pressed to clear the data displayed by the left timer and restart timing from zero; the fan b start switch 906 controls the start and stop of the fan b, the fan b speed regulating knob 908 regulates the rotation speed of the fan b to linearly regulate between 80% -99% of a set value, and the function of the right fine filter timing clear button 907 is that when a new filter element on the right is replaced, the right fine filter timing clear button is pressed to clear data displayed by a right timer and to restart timing from zero. The alarm 7 and the control panel 9 are electrically connected with an electrical control device 10. A lifting handle 11 is arranged on the upper surface of the case 1, so that a user can conveniently move the air supply device; foot pads 106 are mounted at the bottom of the case 1.

The working process of the double-fan multistage filtering air supply device with failure alarm is as follows:

before the multi-stage filtering air supply device with failure alarm is used, an alternating current power supply of a commercial power is connected through a power socket 108 or a direct current power supply 1002 is adopted for supplying power, an air supply hose of a respiratory protection appliance is connected to an air outlet 601 of an air pipe connecting seat 6 of a case 1, then a power switch is turned on, a fan 5 starts to work, air entering an air inlet of the fan 5 is coarsely filtered through a first-stage filter layer 2 of a filter element, and dust, fluff and pollen with larger particles in the air are filtered; the secondary filter layer 3 is used for absorbing and filtering peculiar smell, such as putrescence smell and pungent smell, in the air; the tertiary filter layer 4 carries out fine filtration to filter out dust, bacteria and smoke dust with smaller particles; air is sent into the respiratory protection device through the air supply hose of the fan 5 after filtration, so that dirty air which is not sufficiently filtered is prevented from entering the fan, and harm is avoided to a user. In the process of air supply, the torque monitoring system of the electric control device 10 monitors the torque of the fan 5 in real time, after the filter layer gradually adsorbs more impurity particles during operation, the resistance of the entering air passing through the filter layer is larger and larger, the air resistance at the air inlet of the fan 5 is larger and larger, so that the torque of the fan 5 is increased along with the air resistance, when the torque of the fan 5 reaches the limit value set by the torque monitoring system, the alarm 7 gives an alarm (the alarm gives an alarm to control the working process, see figure 10), reminds a user that the filter element has adsorbed too many impurities, suggests to stop to replace the new filter element, on one hand, the fan 5 can be protected from being damaged by a motor, on the other hand, the user can be reminded of timely replacing the filter element, and unfiltered air is prevented from entering the fan 5.

The above description is merely a preferred embodiment of the present utility model, and the above illustration is not to be construed as limiting the spirit of the present utility model in any way, and any simple modification or variation of the above embodiments according to the technical spirit of the present utility model, and equivalent embodiments that may be changed or modified to equivalent variations using the above disclosed technical spirit of the present utility model, will still fall within the scope of the technical solutions of the present utility model, without departing from the spirit and scope of the present utility model.

Claims (10)

1. The utility model provides a take two fans multistage filtration air supply arrangement of failure alarm, it comprises machine case (1), filter element, fan (5), tuber pipe connecting seat (6), alarm (7), control panel (9) and electric control device (10), its characterized in that: the machine case (1) is of an upper layer and a lower layer, the upper layer is an electric element layer, the lower layer is a fan and a filter element layer, and the upper layer and the lower layer are separated independent chambers; a filter element is arranged on one side of the lower layer of the case (1), a fan (5) is arranged on the other side of the lower layer of the case (1), an air inlet of the fan (5) is in butt joint with the filter element, and an air pipe connecting seat (6) is arranged on an air outlet of the fan (5); an electrical control device (10) is arranged on the upper layer of the case (1); an alarm (7) and a control panel (9) are arranged on the outer surface of one side of the upper layer of the case (1) close to the fan.

2. The dual fan multiple stage filtration air supply device with failure alarm of claim 1, wherein: the filter element consists of a first-stage filter layer (2), a second-stage filter layer (3) and a third-stage filter layer (4), wherein the first-stage filter layer (2) is a coarse filter layer, the first-stage filter layer (2) consists of a framework and a HEPA filter material, and the framework is fixed on the periphery of the HEPA filter material; the secondary filter layer (3) is an peculiar smell adsorption layer, the secondary filter layer (3) is composed of a framework, activated carbon particles and a HEPA filter material, the activated carbon particles are arranged in the HEPA filter material, and the framework is fixed on the periphery of the HEPA filter material; the three-stage filter layer (4) is a fine filter layer, the three-stage filter layer (4) is composed of a framework and a high-efficiency low-resistance HEPA filter material, and the framework is fixed on the periphery of the high-efficiency low-resistance HEPA filter material.

3. The dual fan multiple stage filtration air supply device with failure alarm of claim 1, wherein: the two fans (5) are respectively arranged in a left cavity (102) and a right cavity (103) at the lower layer of the chassis (1), the left cavity (102) and the right cavity (103) form two independent cavities through the partition plate (101), and the fans (5) are centrifugal fans.

4. The dual fan multiple stage filtration air supply device with failure alarm of claim 1, wherein: the air pipe connecting seat (6) is of a hollow structure, one end of the air pipe connecting seat (6) is an open end, the open end is sleeved with an air outlet of the fan (5), at least one air outlet (601) is formed in the other end of the air pipe connecting seat (6), and threads are formed in the outer surface of the air outlet (601).

5. The dual fan multiple stage filtration air supply device with failure alarm of claim 1, wherein: the control panel (9) comprises a main power switch (901), a main power indicator (902), a fan a starting switch (903), a left fine filter timing clear key (904), a fan a speed regulating knob (905), a fan b starting switch (906), a right fine filter timing clear key (907) and a fan b speed regulating knob (908), wherein the main power switch (901) and the main power indicator (902) are electrically connected with an external power supply, the fan a starting switch (903), the fan a speed regulating knob (905) and the fan b starting switch (906), the fan b speed regulating knob (908) are electrically connected with a left fan and a right fan (5) respectively, and the left fine filter timing clear key (904) and the right fine filter timing clear key (907) are electrically connected with a display screen (8) respectively.

6. The dual fan multiple stage filtration air supply device with failure alarm of claim 1, wherein: the electric control device (10) comprises an electric control board (1001), a power supply (1002) and an L-shaped partition board (1003), wherein the electric control board (1001) and the power supply (1002) are fixed on the upper layer of the chassis (1), and the electric control board (1001) and the power supply (1002) are separated through the L-shaped partition board (1003).

7. The dual fan multiple stage filtration air supply device with failure alarm of claim 1, wherein: the alarm (7) and the control panel (9) are electrically connected with the electrical control device (10).

8. The dual fan multiple stage filtration air supply device with failure alarm of claim 2, wherein: the filter element is characterized in that a first-stage filter layer (2), a second-stage filter layer (3) and a third-stage filter layer (4) of the filter element are arranged at intervals, and the interval distance is 10-20 mm.

9. The dual fan multiple stage filtration air supply device with failure alarm of claim 1, wherein: a handle (11) is arranged on the upper surface of the case (1).

10. The dual fan multiple stage filtration air supply device with failure alarm of claim 1, wherein: a power supply heat dissipation grid (107) is manufactured at the place where the power supply (1002) is arranged in the case (1), and an electric control board heat dissipation grid (110) is manufactured at the place where the electric control device (10) is arranged; a filter replacement window (111) is formed in the position, provided with the filter element, of the chassis (1), and an air inlet grid (109) is arranged at the air inlet of the filter element.

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