CN108941056A - A kind of energy-saving instrument and meter dust exhaust apparatus - Google Patents
A kind of energy-saving instrument and meter dust exhaust apparatus Download PDFInfo
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- CN108941056A CN108941056A CN201810773240.3A CN201810773240A CN108941056A CN 108941056 A CN108941056 A CN 108941056A CN 201810773240 A CN201810773240 A CN 201810773240A CN 108941056 A CN108941056 A CN 108941056A
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- shell
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- middle position
- energy
- exhaust apparatus
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of energy-saving instrument and meter dust exhaust apparatuses, including dust sensor, dust cloth bag, pedestal and third shell, one end of the base top is equipped with second shell, and the middle position of second shell inner bottom is equipped with dust cloth bag, the middle position of the second shell side is equipped with access cover, and the bottom end of access cover side middle position is provided with handle, the top of the dust cloth bag is equipped with support plate, top inside the second shell is equipped with third shell, and third shell runs through the top of second shell, the top of the third enclosure interior is equipped with first shell, and first shell runs through the top of third shell.The present invention is by being equipped with sounding board, sound-absorption hole and noise reduction sponge, so that whole device has preferable sound-deadening and noise-reducing performance, to improve the using effect of device, enhances the functionality of device.
Description
Technical field
The present invention relates to technology of instrument and meter field, specially a kind of energy-saving instrument and meter dust exhaust apparatus.
Background technique
With the development of national economy and the progress of science and technology, people are also increasingly wider therewith for the use of instrument and meter
It is general, it since the usual appearance of instrument and meter is smaller, is manually not easily cleaned, under this circumstances, a kind of instrument and meter dust exhaust apparatus is just
It comes into being therewith, instrument and meter dust exhaust apparatus refers to for removing inside cabinet of instrument and meter, connection gap, thermovent equipotential
A kind of dust exhaust apparatus for the dust set, main dynamic part, filtration fraction, Functional portions, protection part and attachment five
A part composition, its appearance are the providing convenience property of work of people.
However existing instrument and meter dust exhaust apparatus is still in the prevalence of some either large or small problems, it cannot be well
Meets the needs of people are growing, often structure is simple, is not easy to be spliced similar to existing instrument and meter dust exhaust apparatus
And disassembly, this causes the using effect of device bad, is not easily cleaned, meanwhile, existing instrument and meter dust exhaust apparatus is also generally deposited
In the biggish defect of energy consumption, it is not easy to promote, in addition, often there is also in use process for existing instrument and meter dust exhaust apparatus
The serious problem of noise pollution, causes the using effect of device bad, for these problems, it is proposed that a kind of novel energy conservation
Type instrument and meter dust exhaust apparatus preferably caters to the demand in market, provides better usage experience for people.
Summary of the invention
The purpose of the present invention is to provide a kind of energy-saving instrument and meter dust exhaust apparatuses, to solve to mention in above-mentioned background technique
Structure out is simple, consume energy larger and sound-deadening and noise-reducing effect difference problem.
To achieve the above object, the invention provides the following technical scheme: a kind of energy-saving instrument and meter dust exhaust apparatus, including
Dust sensor, dust cloth bag, pedestal and third shell, one end of the base top are equipped with second shell, and second shell
The middle position of body inner bottom is equipped with dust cloth bag, and the middle position of the second shell side is equipped with maintenance
Lid, and the bottom end of access cover side middle position is provided with handle, the top of the dust cloth bag is equipped with support plate, described
Top inside second shell is equipped with third shell, and third shell is in the top of second shell, the third shell
The top in portion is equipped with first shell, and first shell is in the top of third shell, the first shell interior side
Between motor is installed at position, and the inside of motor side first shell is equipped with fixed disk, and the output end of the motor passes through
Shaft is connect with fixed disk, and the middle position of the first shell bottom end is provided with dust mouth, and the inside of dust mouth and collection
The inside of dirt cloth bag is connected, and one end at the top of the first shell is provided with entering-dust mouth, and entering-dust mouth is far from first shell
One end is equipped with sweep-up pipe, and the dust suction bottom of the tube is equipped with dust sensor, the pedestal top close to one end of second shell
The other end in portion is equipped with dust-collecting platform, and the middle position of dust-collecting platform inner bottom is equipped with single-chip microcontroller, the dust sensing
The output end of device is electrically connected by the input terminal of conducting wire and single-chip microcontroller, and the output end of single-chip microcontroller passes through the defeated of conducting wire and motor
Enter end to be electrically connected.
Preferably, being integrally formed welding structure between the first shell and third shell, and first shell, third shell
Body and the vertical center line of second shell three are on same vertical line, the first shell, third shell and second shell three
The area coverage of person is successively successively decreased.
Preferably, the first shell is internally provided with noise reduction frame, and is evenly arranged on noise reduction frame arranged in a ring
Sounding board, the inner sidewall of the sounding board is evenly arranged with the sound-absorption hole in honeycomb arrangement, and the inside filling of sound-absorption hole
There is noise reduction sponge.
Preferably, ring flange, and first shell and dust suction are installed close to one end of sweep-up pipe at the top of the first shell
Flanged joint is constituted by ring flange between pipe.
Preferably, the both ends of the second shell are all evenly arranged with the fixing bolt equally arranged, and second shell
Disassembly mounting structure is constituted between body and third shell.
Preferably, the top of the dust cloth bag is equipped with support plate, and the central position of support plate is provided with installation
Ring, the top of the mounting ring is provided with the second link block, and the bottom end of first shell is provided with and the cooperation of the second link block
First link block, first link block and the second link block are all in hollow structure, and the lateral wall of the first link block is provided with
External screw thread, the inner sidewall of the second link block is provided with the internal screw thread with external screw thread cooperation, between the support plate and first shell
It constitutes and is threadedly coupled.
Preferably, the middle position at dust-collecting platform top both ends is all equipped with fixing piece, and in fixing piece bottom end
Between sliding block is provided at position, the top inside the dust-collecting platform is provided with the sliding slot with sliding block cooperation, and the inside of sliding slot is equal
It is even to be provided with limited block, slide construction is constituted between the dust-collecting platform and fixing piece.
Preferably, the inside of the fixed disk lateral wall first shell is uniformly equipped with flabellum, and between adjacent flabellum
Angle is 120 °.
Preferably, the bottom end of the locating part is provided with tenon block, and second shell be internally provided with and tenon block cooperation
Tongue-and-groove constitutes tenon structure between the locating part and second shell.
Preferably, the middle position of the support board ends is all provided with hinged seat, and hinged seat is far from support plate
Finite place piece is installed in one end, overturning structure is constituted between the locating part and support plate, and the flip angle of the mechanism is 0-
180°。
Compared with prior art, the beneficial effects of the present invention are: the energy-saving instrument and meter dust exhaust apparatus is by being equipped with
Single-chip microcontroller, dust sensor, motor and flabellum, so that the arrangement achieves the function of intelligently dedusting, in device dedusting
Cheng Zhong, dust sensor understands the amount of dust inside moment measuring instrument, and the signal experienced is passed to single-chip microcontroller, once
Amount of dust is lower than threshold value, and single-chip microcontroller will control motor closing, so that intelligently dedusting function is realized, so that whole device
Realize the advantage of energy conservation, abreast of the times theme is conducive to the long-term popularization of the device, the device by be equipped with sliding block,
Sliding slot and fixing piece are then convenient for work so that the device is convenient for the fixation on device by the instrument of different size specification
Personnel are dusted operation, enhance the applicability of device, the device by being equipped with sounding board, sound-absorption hole and noise reduction sponge,
So that whole device has preferable sound-deadening and noise-reducing performance, to improve the using effect of device, the function of device is enhanced
Can property, meanwhile, the device by being equipped with dust cloth bag, internal screw thread, external screw thread, the first link block and the second link block so that
The device more advantageously disassembles and installs dust cloth bag convenient for staff, consequently facilitating staff to dust into
Row processing, improves the using effect of device, the device is by being equipped with second shell, fixing bolt, third shell, ring flange
And sweep-up pipe, so that itself structure of installation optimization, integrally splices device convenient for staff, consequently facilitating work
Personnel clear up and safeguard to device, enhance the functionality of device.
Detailed description of the invention
Fig. 1 faces the schematic diagram of the section structure for of the invention；
Fig. 2 is that sound-absorption hole of the invention faces the schematic diagram of the section structure；
Fig. 3 is that the schematic diagram of the section structure is faced in dust mouth of the invention；
Fig. 4 is that locating part of the invention faces the schematic diagram of the section structure；
Fig. 5 is second shell positive structure diagram of the invention；
Fig. 6 is that dust-collecting platform of the invention faces the schematic diagram of the section structure.
In figure: 1, first shell；2, ring flange；3, sweep-up pipe；4, fixing bolt；5, dust sensor；6, second shell；
7, dust cloth bag；8, dust-collecting platform；9, single-chip microcontroller；10, pedestal；11, motor；12, flabellum；13, third shell；14, mounting ring；
15, entering-dust mouth；16, sounding board；17, fixed disk；18, noise reduction frame；19, dust mouth；20, sound-absorption hole；21, external screw thread；22, first
Link block；23, the second link block；24, internal screw thread；25, locating part；26, support plate；27, hinged seat；28, tongue-and-groove；29, tenon block；
30, handle；31, access cover；32, fixing piece；33, sliding slot；34, sliding block.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-6 is please referred to, a kind of embodiment provided by the invention: a kind of energy-saving instrument and meter dust exhaust apparatus, including ash
One end of dust sensor 5, dust cloth bag 7, pedestal 10 and third shell 13,10 top of pedestal is equipped with second shell 6, and second
The middle position of 6 inner bottom of shell is equipped with dust cloth bag 7, and the middle position of 6 side of second shell is equipped with maintenance
Lid 31, and the bottom end of 31 side middle position of access cover is provided with handle 30, the top of dust cloth bag 7 is equipped with support plate
26, the middle position at 26 both ends of support plate is all provided with hinged seat 27, and hinged seat 27 is installed far from one end of support plate 26
Finite place piece 25 constitutes overturning structure between locating part 25 and support plate 26, and the flip angle of the mechanism is 0-180 °, makes it
The angle of locating part 25 is adjusted convenient for staff, to enhance convenience when device uses, the bottom end of locating part 25 is set
Be equipped with tenon block 29, and second shell 6 is internally provided with the tongue-and-groove 28 cooperated with tenon block 29, locating part 25 and second shell 6 it
Between constitute tenon structure, make it easy to staff and dust cloth bag 7 mounted and dismounted, to enhance the function of device
Property, the top inside second shell 6 is equipped with third shell 13, and third shell 13 runs through the top of second shell 6, third shell
Top inside body 13 is equipped with first shell 1, and first shell 1 runs through the top of third shell 13, first shell 1 and third
Being integrally formed welding structure between shell 13, and the vertical centre of 6 three of first shell 1, third shell 13 and second shell
Line on same vertical line, successively successively decrease by the area coverage of 6 three of first shell 1, third shell 13 and second shell, keeps its excellent
The structure for having changed device ensure that whole device runs more steady, and it is between waiting that the both ends of second shell 6, which are all evenly arranged with,
Fixing bolt 4 away from arrangement, and disassembly mounting structure is constituted between second shell 6 and third shell 13, make it entirely to fill
Set easy for removal and installation, to enhance the functionality of device, the middle position of 1 interior side of first shell is equipped with electricity
Machine 11, and the inside of 11 side first shell 1 of motor is equipped with fixed disk 17, the inside of 17 lateral wall first shell 1 of fixed disk
Flabellum 12 is uniformly installed, and the angle between adjacent flabellum 12 is 120 °, makes it easy to device and more uniform dust suction is provided
Power, to enhance the practicability of device, first shell 1 is internally provided with noise reduction frame 18, and is uniformly arranged on noise reduction frame 18
There is sounding board 16 arranged in a ring, the inner sidewall of sounding board 16 is evenly arranged with the sound-absorption hole 20 in honeycomb arrangement, and inhales
The inside of sound hole 20 is packed with noise reduction sponge, makes which increase the performances of device sound-deadening and noise-reducing, to improve the use of device
The output end of effect, motor 11 is connect by shaft with fixed disk 17, and the middle position of 1 bottom end of first shell is provided with out dirt
Mouth 19, and the inside of dust mouth 19 is connected with the inside of dust cloth bag 7, the top of dust cloth bag 7 is equipped with support plate 26, and
The central position of support plate 26 is provided with mounting ring 14, and the top of mounting ring 14 is provided with the second link block 23, and first shell
The bottom end of body 1 is provided with the first link block 22 with the cooperation of the second link block 23, and the first link block 22 and the second link block 23 are all
The lateral wall of hollow structure, and the first link block 22 is provided with external screw thread 21, the inner sidewall of the second link block 23 be provided with
The internal screw thread 24 that external screw thread 21 cooperates is constituted between support plate 26 and first shell 1 and is threadedly coupled, so that dust cloth bag 7 is convenient for
Disassembly installation is carried out between device, consequently facilitating staff handles dust, enhances the functionality of device, first
The one end at the top of shell 1 is provided with entering-dust mouth 15, and entering-dust mouth 15 is equipped with sweep-up pipe 3 far from one end of first shell 1, and first
1 top of shell is equipped with ring flange 2 close to one end of sweep-up pipe 3, and passes through 2 structure of ring flange between first shell 1 and sweep-up pipe 3
At flanged joint, make it easy to staff and sweep-up pipe 3 is disassembled and installed, so that device is convenient to clean and ties up
Shield, enhances the practicability of device, 3 bottom of sweep-up pipe is equipped with dust sensor 5, pedestal 10 close to one end of second shell 6
The other end at top is equipped with dust-collecting platform 8, and the middle position of 8 inner bottom of dust-collecting platform is equipped with single-chip microcontroller 9, dust-collecting platform 8
The middle position at top both ends is all equipped with fixing piece 32, and the middle position of 32 bottom end of fixing piece is provided with sliding block 34,
Top inside dust-collecting platform 8 is provided with the sliding slot 33 cooperated with sliding block 34, and the inside of sliding slot 33 is evenly arranged with limited block, inhales
Slide construction is constituted between dirt platform 8 and fixing piece 32, makes it easy to staff for different size and waits for that the instrument of dedusting is consolidated
It is fixed, to enhance the applicability of device, be conducive to the long-term popularization of the device, the output end of dust sensor 5 passes through conducting wire
It is electrically connected with the input terminal of single-chip microcontroller 9, and the output end of single-chip microcontroller 9 is electrically connected by the input terminal of conducting wire and motor 11,
The model of the single-chip microcontroller 9 can be HT66F018, and the model of the motor 11 can be Y355L1-2, and the model of the dust sensor 5 can
For GP2Y1010AU.
Working principle: in use, external power supply, staff first with fixing bolt 4 effect, by second shell 6
Be fixed installation between third shell 13, while using the effect of ring flange 2, by between first shell 1 and sweep-up pipe 3 into
Row is fixedly mounted, so that whole device realizes the function of splicing, improves the using effect of device, then staff
Instrument to dedusting can be placed on to the top of pedestal 10, using the mating reaction of sliding slot 33 and sliding block 34, adjust fixing piece
32 spacing allows to fix the instrument of different size, and sweep-up pipe 3 is then protruded into the inside of instrument, starts motor
11, cooperate the effect of fixed disk 17 and flabellum 12, carries out preferable dedusting function, meanwhile, in the operational process of device, due to
The device is equipped with single-chip microcontroller 9 and dust sensor 5, so that removing the arrangement achieves the function of intelligently dedusting in device
During dirt, dust sensor 5 understands the amount of dust inside moment measuring instrument, and the signal experienced is passed to single-chip microcontroller
9, once amount of dust is lower than threshold value, single-chip microcontroller 9 will control the closing of motor 11, to realize intelligently dedusting function, make
Obtaining whole device realizes the advantage of energy conservation, and abreast of the times theme is conducive to the long-term popularization of the device, finally, due to should
Device is provided with sound-absorption hole 20 and sounding board 16, so that whole device has preferable sound-deadening and noise-reducing performance, to improve
The using effect of device enhances the functionality of device.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (10)
1. a kind of energy-saving instrument and meter dust exhaust apparatus, including dust sensor (5), dust cloth bag (7), pedestal (10) and third
Shell (13), it is characterised in that: one end at the top of the pedestal (10) is equipped with second shell (6), and second shell (6) is internal
The middle position of bottom end is equipped with dust cloth bag (7), and the middle position of second shell (6) side is equipped with access cover
(31), and the bottom end of access cover (31) side middle position is provided with handle (30), the top installation of the dust cloth bag (7)
Have support plate (26), the internal top of the second shell (6) is equipped with third shell (13), and third shell (13) is through the
The top of two shells (6), the internal top of the third shell (13) is equipped with first shell (1), and first shell (1) runs through
The middle position on the top of third shell (13), first shell (1) interior side is equipped with motor (11), and motor
(11) inside of side first shell (1) is equipped with fixed disk (17), and the output end of the motor (11) passes through shaft and fixation
Disk (17) connection, the middle position of first shell (1) bottom end is provided with dust mouth (19), and the inside of dust mouth (19)
It is connected with the inside of dust cloth bag (7), one end at the top of the first shell (1) is provided with entering-dust mouth (15), and entering-dust mouth
(15) one end far from first shell (1) is equipped with sweep-up pipe (3), and sweep-up pipe (3) bottom is close to the one of second shell (6)
End is equipped with dust sensor (5), and the other end at the top of the pedestal (10) is equipped with dust-collecting platform (8), and dust-collecting platform (8) is internal
The middle position of bottom end is equipped with single-chip microcontroller (9), and the output end of the dust sensor (5) passes through conducting wire and single-chip microcontroller (9)
Input terminal be electrically connected, and the output end of single-chip microcontroller (9) is electrically connected by the input terminal of conducting wire and motor (11).
2. a kind of energy-saving instrument and meter dust exhaust apparatus according to claim 1, it is characterised in that: the first shell
(1) the being integrally formed welding structure between third shell (13), and first shell (1), third shell (13) and second shell
(6) vertical center line of three is on same vertical line, the first shell (1), third shell (13) and second shell (6) three
The area coverage of person is successively successively decreased.
3. a kind of energy-saving instrument and meter dust exhaust apparatus according to claim 1, it is characterised in that: the first shell
(1) be internally provided with noise reduction frame (18), and sounding board arranged in a ring (16) are evenly arranged on noise reduction frame (18), it is described
The inner sidewall of sounding board (16) is evenly arranged with the sound-absorption hole (20) in honeycomb arrangement, and the inside of sound-absorption hole (20) is packed with
Noise reduction sponge.
4. a kind of energy-saving instrument and meter dust exhaust apparatus according to claim 1, it is characterised in that: the first shell
(1) top is equipped with ring flange (2) close to the one end of sweep-up pipe (3), and passes through method between first shell (1) and sweep-up pipe (3)
Blue disk (2) constitutes flanged joint.
5. a kind of energy-saving instrument and meter dust exhaust apparatus according to claim 1, it is characterised in that: the second shell
(6) both ends are all evenly arranged with the fixing bolt (4) equally arranged, and second shell (6) and third shell (13) it
Between constitute disassembly mounting structure.
6. a kind of energy-saving instrument and meter dust exhaust apparatus according to claim 1, it is characterised in that: the dust cloth bag
(7) top is equipped with support plate (26), and the central position of support plate (26) is provided with mounting ring (14), the mounting ring
(14) top is provided with the second link block (23), and the bottom end of first shell (1) is provided with and cooperates with the second link block (23)
The first link block (22), first link block (22) and the second link block (23) are all in hollow structure, and the first link block
(22) lateral wall is provided with external screw thread (21), and the inner sidewall of the second link block (23) is provided with interior with external screw thread (21) cooperation
Screw thread (24) is constituted between the support plate (26) and first shell (1) and is threadedly coupled.
7. a kind of energy-saving instrument and meter dust exhaust apparatus according to claim 1, it is characterised in that: the dust-collecting platform (8)
The middle position at top both ends is all equipped with fixing piece (32), and the middle position of fixing piece (32) bottom end is provided with sliding block
(34), the internal top of the dust-collecting platform (8) is provided with the sliding slot (33) with sliding block (34) cooperation, and the inside of sliding slot (33) is equal
It is even to be provided with limited block, slide construction is constituted between the dust-collecting platform (8) and fixing piece (32).
8. a kind of energy-saving instrument and meter dust exhaust apparatus according to claim 1, it is characterised in that: the fixed disk (17)
The inside of lateral wall first shell (1) is uniformly equipped with flabellum (12), and the angle between adjacent flabellum (12) is 120 °.
9. a kind of energy-saving instrument and meter dust exhaust apparatus according to claim 1, it is characterised in that: the locating part (25)
Bottom end be provided with tenon block (29), and second shell (6) be internally provided with tenon block (29) cooperation tongue-and-groove (28), the limit
Tenon structure is constituted between position part (25) and second shell (6).
10. a kind of energy-saving instrument and meter dust exhaust apparatus according to claim 1, it is characterised in that: the support plate
(26) middle position at both ends is all provided with hinged seat (27), and hinged seat (27) is equipped with far from the one end of support plate (26)
Locating part (25) constitutes overturning structure between the locating part (25) and support plate (26), and the flip angle of the mechanism is 0-
180°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810773240.3A CN108941056A (en) | 2018-07-14 | 2018-07-14 | A kind of energy-saving instrument and meter dust exhaust apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810773240.3A CN108941056A (en) | 2018-07-14 | 2018-07-14 | A kind of energy-saving instrument and meter dust exhaust apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108941056A true CN108941056A (en) | 2018-12-07 |
Family
ID=64481172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810773240.3A Pending CN108941056A (en) | 2018-07-14 | 2018-07-14 | A kind of energy-saving instrument and meter dust exhaust apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108941056A (en) |
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| US4120616A (en) * | 1975-10-06 | 1978-10-17 | Breuer Electric Manufacturing Company | Vacuum cleaner-blower assembly with sound absorbing arrangement |
| DE2343560C2 (en) * | 1972-08-28 | 1984-03-29 | Lockheed Aircraft Corp., Burbank, Calif. | Sound-absorbing ventilation device |
| CN1055869A (en) * | 1990-04-18 | 1991-11-06 | 株式会社日立制作所 | Vacuum cleaner |
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2018
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|---|---|---|---|---|
| DE2343560C2 (en) * | 1972-08-28 | 1984-03-29 | Lockheed Aircraft Corp., Burbank, Calif. | Sound-absorbing ventilation device |
| US4120616A (en) * | 1975-10-06 | 1978-10-17 | Breuer Electric Manufacturing Company | Vacuum cleaner-blower assembly with sound absorbing arrangement |
| CN1055869A (en) * | 1990-04-18 | 1991-11-06 | 株式会社日立制作所 | Vacuum cleaner |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |