CN112774052A - Portable electric air supply device based on two-stage filtration - Google Patents
Portable electric air supply device based on two-stage filtration Download PDFInfo
- Publication number
- CN112774052A CN112774052A CN202110176260.4A CN202110176260A CN112774052A CN 112774052 A CN112774052 A CN 112774052A CN 202110176260 A CN202110176260 A CN 202110176260A CN 112774052 A CN112774052 A CN 112774052A
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- air
- filter
- air supply
- secondary filter
- filter element
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- 238000001914 filtration Methods 0.000 title claims abstract description 26
- 238000005192 partition Methods 0.000 claims description 28
- 238000005070 sampling Methods 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 14
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000004887 air purification Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 230000001012 protector Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
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- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a portable electric air supply device based on two-stage filtration, which comprises a shell, a fan, a controller, a battery, a primary filter and a secondary filter, wherein the shell is provided with a filter screen; the primary filter is arranged outside the shell and communicated with an air inlet of the fan, the secondary filter is arranged inside the shell and communicated with an air outlet of the fan, and the fan responds to an air supply instruction of the controller and conveys outside air into an external protection device after being filtered by the primary filter and the secondary filter in sequence. The primary filter is arranged outside the shell of the electric air supply device, and the secondary filter is arranged in the shell of the electric air supply device, so that the requirement of the electric air supply device on small size is met, and the air is filtered in two stages through the primary filter and the secondary filter, so that the air purification effect is improved, and the electric air supply device can be used in a scene with higher requirement on safety.
Description
Technical Field
The invention relates to an electric air supply device, in particular to a portable electric air supply device based on two-stage filtration.
Background
The electric air supply device can provide clean air for protective articles such as a breathing mask, a positive pressure protective suit and the like and maintain a certain positive pressure value in the protective articles. Electric air supply arrangement extensively is used for staff's breathing protection under the polluted air environment, and it is through sending into user's breathing mask, malleation protective clothing etc. behind purifying polluted air to make the person of wearing need not to overcome the respiratory resistance that filter etc. brought, and can provide certain malleation to inside such as malleation protective clothing, and effectively avoid the dead space problem that general malleation protective clothing exists, improved the security and the travelling comfort of wearing by a wide margin.
The electric air supply devices adopted on the breathing mask and the protective clothing need to be carried by a wearer, and are generally small in size and light in weight. Because of the limitation in the aspect of electronic air supply arrangement size, weight, current electronic air supply arrangement only sets up a filter in limited space usually, adopts the one-level filtration mode, and filtering level and filtration air supply efficiency are not high, are not suitable for using under the scene that has higher requirement to the security. The filter added in the electric air supply device can additionally occupy the space of components such as a fan, a battery, a control panel and the like in the electric air supply device, and the small-size and light-weight design requirements are difficult to meet.
Disclosure of Invention
In view of the problems of the prior art, the invention aims to provide an electric air supply device which is small in size, high in air supply filtering efficiency and capable of achieving portability and safety.
In order to achieve the aim, the portable electric air supply device based on two-stage filtration comprises a shell, a fan, a controller, a battery, a primary filter and a secondary filter; the primary filter is arranged outside the shell and communicated with an air inlet of the fan, the secondary filter is arranged inside the shell and communicated with an air outlet of the fan, and the fan responds to an air supply instruction of the controller and conveys outside air into an external protection device after being filtered by the primary filter and the secondary filter in sequence.
Furthermore, the shell comprises a top cover, a bottom cover and a frame, a quick connector is arranged on the outer side of the top cover, the primary filter is fixed outside the shell through the quick connector, and the filtering surface of the primary filter is in sealing joint with the air inlet of the fan.
Further, the secondary filter is fixed on the inner side of the bottom cover, an air inlet of the secondary filter is communicated with an air outlet of the fan in a sealing mode, and an air outlet of the secondary filter is communicated with the protection device.
Further, the secondary filter includes box body, first filter core, second filter core and baffle, quilt in the box body first filter core the second filter core with the baffle is separated for first wind chamber and second wind chamber, first wind chamber with the air intake intercommunication of secondary filter, the second wind chamber with secondary filter's air outlet intercommunication, just first wind chamber is passed through respectively the filtering surface of first filter core with the filtering surface of second filter core with second wind chamber intercommunication.
Further, the first filter element and the second filter element are limited between the inner end face of the box body and the partition plate, the first filter element and the second filter element are arranged at intervals in the vertical direction of the box body, the first air cavity is formed between the first filter element and the second filter element, one side of the first air cavity is communicated with the air inlet of the secondary filter, and the other side of the first air cavity is sealed by the partition plate.
Furthermore, a clamping structure for clamping and fixing the first filter element and the second filter element is arranged on the partition plate.
Furthermore, the cross section of the first air cavity is trapezoidal, the ventilation surfaces of the first filter element and the second filter element form two trapezoidal waists, the air inlet of the secondary filter forms the lower bottom of the trapezoid, and the partition plate forms the upper bottom of the trapezoid.
Further, the air outlet of the secondary filter is connected with an air supply pipe, and the filtered purified air is conveyed into the protective device through the air supply pipe.
And the pressure sensor is connected with a pressure sampling pipe, the pressure sampling pipe is sleeved in the blast pipe through the second air cavity, and a pressure sampling port of the pressure sampling pipe is arranged in the protective device.
Furthermore, a clamping structure is arranged on one side of the partition board close to the air outlet of the secondary filter, and the partial pressure sampling pipe extending into the second air cavity is fixed through the clamping structure.
Further, the fan is a vortex fan.
The primary filter is arranged outside the shell of the electric air supply device, and the secondary filter is arranged in the shell of the electric air supply device, so that the requirement of the electric air supply device on small size is met, and the air is filtered in two stages through the primary filter and the secondary filter, so that the air purification effect is improved, and the electric air supply device can be used in a scene with higher requirement on safety.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1A is a schematic diagram of an external structure of a portable electric blower according to an embodiment of the present invention;
FIG. 1B is a schematic diagram of an internal structure of a portable electric blower according to an embodiment of the present invention;
FIG. 2A is a schematic diagram of an external structure of a secondary filter of the portable electric blower according to an embodiment of the present invention;
FIG. 2B is a schematic diagram of an internal structure of a secondary filter of the portable electric blower according to an embodiment of the present invention;
fig. 2C is a schematic cross-sectional view of a secondary filter of the portable electric blower according to an embodiment of the present invention.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the term "connected" is to be understood broadly, and may be, for example, fixed, detachable, or integrally connected, and may be mechanically or electrically connected, and may be directly or indirectly connected through an intermediate medium, unless otherwise specifically stated or limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.
The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying a number of the indicated technical features. Thus, a defined feature of "first", "second", may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1A and 1B, the portable electric blower based on two-stage filtration of the present invention includes a housing 1, a blower 2, a control board 3, a battery 4, a primary filter 5, and a secondary filter 6, and a controller and a pressure sensor may be mounted on the control board 3. The primary filter 5 sets up the shell 1 outer with the air intake intercommunication of fan 2, secondary filter 6 sets up in the shell 1 with the air outlet intercommunication of fan 2, fan 2 responds to the air supply instruction of controller passes through outside air in proper order primary filter 5 secondary filter 6 filters and carries in the protector to outside.
The primary filter 5 is arranged outside the shell 1 and is used for primarily filtering the outside atmosphere, and the secondary filter 6 is arranged in the shell 1 and is used for further filtering the air after primary filtering. The electronic air supply arrangement of this embodiment is last to have set up two filters that arrange in series and carry out the two-stage filtration to outside air, has improved the gaseous safety level after electronic air supply arrangement filters, can be applicable to among protective device such as malleation protective clothing and the protective face mask that protective safety requires more. And two filters are respectively arranged inside and outside the shell 1, so that the occupied space of the filters in the shell 1 is reduced, and the requirements on miniaturization and light weight of the portable electric air supply device are met.
The shell 1 comprises a top plate 11, a bottom plate 12, a left side plate 13, a right side plate 14, an upper side plate 15 and a lower side plate 16, a battery 4 is fixedly installed on the bottom plate 12 through a battery 4 seat and is close to the right side plate 14, a control plate 3 is installed in a limiting groove of the bottom plate 12 and is fixedly installed on the lower side plate 16 through screws, a primary filter 5 is fixedly installed on the outer side of the top plate through a quick connector, a secondary filter 6 is fixedly installed on the bottom plate 12 and is close to the upper side plate 15, a fan 2 is fixedly installed in a middle area between the secondary filter 6 and the control plate 3, an air inlet of the fan 2 corresponds to a projection position of the bottom plate 12 and is communicated with the primary filter 5 in a sealing mode. In the embodiment, the battery 4, the control panel 3, the secondary filter 6, the fan 2 and other components in the housing 1 are compact and reasonable in layout, the space in the housing 1 is utilized to the maximum extent, and the electric air supply device is beneficial to miniaturization and light weight design. In addition, the battery 4 and the control board 3 are disposed at edge positions within the housing 1, facilitating heat dissipation from the battery 4 and the control board 3. The fan 2 is arranged between the secondary filter 6 and the control panel 3, so that the spacing distance between the fan 2 and the control panel 3 and the distance between the fan 2 and the secondary filter 6 are shortened, and convenience is brought to connection between the fan 2 and the control panel 3 and sealing connection between the air outlet of the fan 2 and the secondary filter 6. It should be noted that the present embodiment is only an example, and the arrangement of the components in the electric blower device of the present invention in the housing 1 is not limited to this.
The primary filter 5 and the secondary filter 6 respectively comprise a box body, and a filter element for filtering air is arranged in the box body and can filter most of dust particles such as particles, smog, microorganisms and the like in the air. As shown in fig. 2A-2C, the secondary filter 6 includes a box body 61, a first filter element 62, a second filter element 63, and a partition plate 64, the box body 61 is divided into a first air chamber 71 and a second air chamber 72 by the first filter element 62, the second filter element 63, and the partition plate 64, the first air chamber 71 is communicated with the air inlet 65 of the secondary filter 6, the second air chamber 72 is communicated with the air outlet 66 of the secondary filter 6, and the first air chamber 71 is communicated with the second air chamber 72 through the filtering surface of the first filter element 62 and the filtering surface of the second filter element 63. The partition plate 64 partitions the box body 61, and a gap for air to pass through is reserved between the upper side of the partition plate 64 and the top cover, and a gap for air to pass through is also reserved between the lower side of the partition plate 64 and the bottom cover.
In this embodiment, the first air chamber 71 and the second air chamber 72 are separated by the first filter element 62 and the second filter element 63, so that the impurity particles in the air entering the first air chamber 71 can be blocked by the first filter element 62 and the second filter element 63, the purified air enters the second air chamber 72 through the first filter element 62 and the second filter element 63, and the purified air is delivered into the protection device from the air outlet 66 of the secondary filter 6 through the air delivery pipe 8. Because two filter elements are arranged in the box body 61 of the secondary filter 6, and the air sent into the first air cavity 71 through the primary filter 5 can respectively enter the second air cavity 72 after being filtered by the filtering surfaces of the two filter elements, the filtering efficiency of the secondary filter 6 is greatly improved. The direction of the arrows in fig. 2C shows the circulation of the air flow in the secondary filter 6.
In an embodiment of the present invention, the first cartridge 62 and the second cartridge 63 are defined between the inner end surface of the case 61 and the partition 64, and the first cartridge 62 and the second cartridge 63 can be stably restrained between the inner end surface of the case 61 and the partition 64 by virtue of the slight elasticity and stretchability of the first cartridge 62 and the second cartridge 63 themselves. In order to improve the sealing performance between the first filter element 62 and the second filter element 63 and between the box body 61 and the partition plate 64, a sealant can be coated on the installation contact surfaces of the first filter element 62 and the box body 61 and the partition plate 64. The first filter element 62 and the second filter element 63 can be arranged at intervals along the vertical direction of the box body 61, and the first air cavity 71 is formed between the first filter element 62 and the second filter element 63, one side of the first air cavity 71 is communicated with the air inlet 65 of the secondary filter 6, and the other side of the first air cavity 71 is sealed by the partition plate 64.
Optionally, the partition 64 is provided with a clamping structure for clamping the first filter cartridge 62 and the second filter cartridge 63, for example, the clamping structure is a step structure 641 provided on the partition 64 in the embodiment, and the clamping structure can improve the stability of the first filter cartridge 62 and the second filter cartridge 63 confined between the inner end surface of the box body 61 and the partition 64.
Optionally, the cross-sectional shape of the first air cavity 71 is a trapezoid, the ventilation surfaces of the first filter element 62 and the second filter element 63 form two sides of the trapezoid, the air inlet 65 of the secondary filter 6 forms a lower bottom of the trapezoid, and the partition plate 64 forms an upper bottom of the trapezoid. The trapezoidal cross-sectional shape of the first air cavity 71 helps to supply air into the first air cavity 71 more smoothly, and increases the contact area between the air and the filter element, thereby improving the filtering efficiency of the secondary filter 6. The cross-sectional shape of the first air chamber 71 is not limited to a trapezoid, and may be a parallelogram, a rectangle, or the like.
Optionally, a sealing structure 67 may be disposed on the box body 61 near the air inlet 65 of the secondary filter 6, the air outlet of the fan 2 may be inserted into the air inlet 65 of the secondary filter 6 at the notch of the sealing structure 67, and then the sealing structure 67 and the lower fan 2 are fixed by screws or the like, so that the air outlet of the fan 2 and the air inlet 65 of the secondary filter 6 are effectively sealed, and the sealing performance between the fan 2 and the secondary filter 6 is improved.
Optionally, the air outlet 66 of the secondary filter 6 is connected to the air supply pipe 8, and the filtered purified air is conveyed into the protection device through the air supply pipe 8. It should be noted that the air outlet 66 of the secondary filter 6 may also be directly communicated with the protection device.
Optionally, a through hole 611 is formed in the box body 61 of the secondary filter 6, and a pressure sampling pipe connected to the pressure sensor can extend into the second air cavity 72 through the through hole 611, and can be sleeved into the air supply pipe 8 through the second air cavity 72, and a pressure sampling port of the pressure sampling pipe is placed in the protection device, so that the arrangement of the pressure sampling pipe is facilitated, and the air supply pipe 8 outside the pressure sampling pipe can also play a role in protecting the pressure sampling pipe.
Optionally, a clamping structure 68 is disposed on one side of the partition plate 64 close to the air outlet 66 of the secondary filter 6, and the pressure pipe extending into the second air cavity 72 is fixed by the clamping structure 68. This card solid structure 68 can fix the pressure tube that stretches into in second wind chamber 72, avoids the pressure tube position to remove the data acquisition that influences pressure sensor, has improved pressure sensor data acquisition's accuracy.
Alternatively, the fan 2 may be a dc vortex fan with high pressure and large air volume, but the invention is not limited thereto, and other fans meeting the size and performance requirements may be substituted. The air inlet and the air outlet of the fan 2 are arranged at 90 degrees, the central lines of the corresponding primary filter 5 and the corresponding secondary filter 6 are intersected at 90 degrees, the air direction of external air entering and exiting the electric air supply device is changed, the external air enters from the top plate side of the electric air supply device and is filtered by the primary filter 5 and the secondary filter 6, and the air supply pipe 8 accessed from the upper side plate 15 of the electric air supply device supplies air to the protection device. The air intake and the air outlet of fan 2 and primary filter 5 and secondary filter 6 are 90 degrees angular arrangements, and the primary filter 5 of being convenient for sets up in 1 outsides of shell, and secondary filter 6 sets up in shell 1, has reduced 1 inner space of shell and has taken up, helps electronic air supply arrangement miniaturization and lightweight design.
Optionally, be provided with switch 131 on the left side board 13 of electronic air supply arrangement shell 1 and charge interface 132 and USB interface 134, the interface 132 that charges conveniently charges for electronic air supply arrangement's battery 4, USB interface 134 can be connected electronic air supply arrangement with external display device, with the intuitive demonstration of information such as fan wind speed, battery power, protector internal pressure that control panel 3 gathered for the user.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A portable electric air supply device based on two-stage filtration is characterized by comprising a shell, a fan, a controller, a battery, a primary filter and a secondary filter; the primary filter is arranged outside the shell and communicated with an air inlet of the fan, the secondary filter is arranged inside the shell and communicated with an air outlet of the fan, and the fan responds to an air supply instruction of the controller and conveys outside air into an external protection device after being filtered by the primary filter and the secondary filter in sequence.
2. The portable electric air supply device as recited in claim 1, wherein the housing comprises a top cover, a bottom cover and a frame, a quick connector is disposed on an outer side of the top cover, the primary filter is fixed outside the housing through the quick connector, and an air outlet of the primary filter is in sealed communication with an air inlet of the fan.
3. The portable electric air supply unit as set forth in claim 1, wherein the secondary filter is fixed to an inner side of the bottom cover, an air inlet of the secondary filter is in sealed communication with an air outlet of the blower, and an air outlet of the secondary filter is in communication with the guard.
4. The portable electric air supply device as claimed in claim 1, wherein the secondary filter comprises a box body, a first filter element, a second filter element and a partition plate, the box body is divided into a first air chamber and a second air chamber by the first filter element, the second filter element and the partition plate, the first air chamber is communicated with an air inlet of the secondary filter, the second air chamber is communicated with an air outlet of the secondary filter, and the first air chamber is communicated with the second air chamber through a filtering surface of the first filter element and a filtering surface of the second filter element.
5. The portable electric air supply apparatus of claim 4, wherein the first filter element and the second filter element are defined between an inner end surface of the box body and the partition plate, and the first filter element and the second filter element are spaced apart in a vertical direction of the box body and form the first air chamber therebetween, one side of the first air chamber communicates with the air inlet of the secondary filter, and the other side of the first air chamber is sealed by the partition plate.
6. The portable electric air supply device as claimed in claim 5, wherein the partition plate is provided with a clamping structure for clamping and fixing the first filter element and the second filter element.
7. The portable electric air supply device as claimed in claim 5, wherein the first air chamber has a trapezoidal cross-sectional shape, the ventilation surfaces of the first filter element and the second filter element form two sides of the trapezoid, the air inlet of the secondary filter forms a lower bottom of the trapezoid, and the partition forms an upper bottom of the trapezoid.
8. The portable electric blower according to claim 1, wherein the outlet of the secondary filter is connected to a blower pipe, and the filtered and purified air is supplied into the guard through the blower pipe.
9. The portable electric air supply device as claimed in claim 8, further comprising a pressure sensor, wherein the pressure sensor is connected with a pressure sampling pipe, the pressure sampling pipe is sleeved in the air supply pipe through the second air cavity, and a pressure sampling port of the pressure sampling pipe is arranged in the protective device.
10. The portable electric air supply device as claimed in claim 9, wherein a fastening structure is provided on a side of the partition plate adjacent to the air outlet of the secondary filter, and the pressure pipe extending into the second air chamber is fastened by the fastening structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110176260.4A CN112774052A (en) | 2021-02-09 | 2021-02-09 | Portable electric air supply device based on two-stage filtration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110176260.4A CN112774052A (en) | 2021-02-09 | 2021-02-09 | Portable electric air supply device based on two-stage filtration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112774052A true CN112774052A (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110176260.4A Pending CN112774052A (en) | 2021-02-09 | 2021-02-09 | Portable electric air supply device based on two-stage filtration |
Country Status (1)
| Country | Link |
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| CN (1) | CN112774052A (en) |
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| CN112295129A (en) * | 2020-11-27 | 2021-02-02 | 伍海峰 | Electric blowing-in killing type dust-proof and virus-proof respirator |
| CN214860677U (en) * | 2021-02-09 | 2021-11-26 | 北京机械设备研究所 | Portable electric air supply device based on two-stage filtration |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205779818U (en) * | 2016-07-04 | 2016-12-07 | 广东亚镭机电工程有限公司 | A kind of fan filter screen unit |
| CN107224794A (en) * | 2017-06-07 | 2017-10-03 | 烨庆集团有限公司 | A kind of air cleaner of 3d air delivery |
| CN109316655A (en) * | 2017-07-31 | 2019-02-12 | 深圳市美好创亿医疗科技有限公司 | Air-supply mask system and air blowing control method |
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