CN111795441A - Air purification treatment unit - Google Patents

Air purification treatment unit Download PDF

Info

Publication number
CN111795441A
CN111795441A CN202010654879.7A CN202010654879A CN111795441A CN 111795441 A CN111795441 A CN 111795441A CN 202010654879 A CN202010654879 A CN 202010654879A CN 111795441 A CN111795441 A CN 111795441A
Authority
CN
China
Prior art keywords
expansion section
pipe
assembly
positive electrode
baffle plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010654879.7A
Other languages
Chinese (zh)
Inventor
李娟娟
Original Assignee
李娟娟
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 李娟娟 filed Critical 李娟娟
Priority to CN202010654879.7A priority Critical patent/CN111795441A/en
Publication of CN111795441A publication Critical patent/CN111795441A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28Arrangement or mounting of filters

Abstract

The invention belongs to the field of air treatment equipment, and particularly relates to an air purification treatment unit, which comprises a treatment unit body; a first contraction section, a first expansion section, a second expansion section and a second contraction section are sequentially arranged inside the processing unit body from left to right; the first contraction section is communicated with the first expansion section through a first through pipe; the first capacity expansion section is communicated with the second capacity expansion section through a second through pipe; an air inlet assembly is arranged in the first through pipe, an ash scraping assembly and a filter screen are arranged in the first expansion section, and a brush is arranged outside the ash scraping assembly; the lower end of the first expansion section is communicated with a dust collecting pipe; a blower is arranged in the second through pipe; an electrostatic dust removal assembly is arranged in the second expansion section; the brush arranged on the slotted turntable of the dust scraping component arranged on the air purification unit enlarges the cleaning area of the filter screen, prolongs the stay time of the brush on the filter screen, and greatly improves the cleaning effect of the dust scraping component on the filter screen.

Description

Air purification treatment unit
Technical Field
The invention relates to the field of air treatment equipment, in particular to an air purification treatment unit.
Background
The air handling unit is a centralized air handling system that may have different functions for different applications. The air treatment unit that uses at present filters dust pelletizing system and exists alone, can't adjust the use to the different air situation in the external world to reduced the application scope of air treatment unit, the filter uses the back simultaneously, and impurity in the air easily blocks up the filter, leads to the windage grow of filter, and the energy consumption improves, thereby has caused the waste of the energy. An air cleaning unit is provided in patent application publication No. CN208652773U to this end.
The air purification treatment unit is provided with the filter and the bag-type dust collector, so that the air purification treatment unit is provided with a plurality of filtering devices, can be adjusted and used according to different external air conditions, can effectively remove impurities on the surface of the filter through the cleaning device, and can effectively absorb formaldehyde through the formaldehyde removal device; however, the air purification unit also has certain defects, for example, the cleaning assembly for cleaning dust adhered to the surface of the filter is driven by the sliding block and the sliding rod to move, the running speed of the brush is high, the cleaning effect is not obvious, and dead angles exist in the cleaning range of the cleaning assembly all the time due to the single sliding rod and the single sliding block.
In view of the above problems in the prior art, the present invention is directed to an air purification unit.
Disclosure of Invention
The present invention is directed to an air purification unit, which solves the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
an air purification unit, comprising: the air inlet is arranged on the left side of the processing unit body, the air outlet port is arranged on the right side of the processing unit body, and a first contraction section, a first expansion section, a second expansion section and a second contraction section are arranged inside the processing unit body from left to right in sequence; the first contraction section is communicated with the first expansion section through a first through pipe; the first capacity expansion section is communicated with the second capacity expansion section through a second through pipe;
an air inlet assembly is mounted inside the first through pipe, an ash scraping assembly and a filter screen are arranged inside the first expansion section, a brush is arranged outside the ash scraping assembly and is in contact with the filter screen, and the upper end and the lower end of the ash scraping assembly are mounted and fixed inside the first expansion section through a support; the lower end of the first expansion section is communicated with a dust collecting pipe; a blower is arranged in the second through pipe; and an electrostatic dust removal assembly is arranged in the second expansion section.
As a further scheme of the invention: the air inlet assembly comprises a ball valve, a rotating shaft and a motor, the ball valve is movably mounted inside the first through pipe, the upper end of the ball valve is provided with the rotating shaft, the upper end of the rotating shaft penetrates through the inner wall of the first through pipe and then is movably mounted through a shaft seal, the rotating shaft is provided with a driven gear, a driving gear is mounted on a driving shaft of the motor, and the driven gear arranged on the rotating shaft is meshed with the driving gear mounted on the driving shaft of the motor; when carrying out flow control regulation to the inside entering contaminated air of first siphunculus, through starter motor, the motor passes through the spherical valve that driving gear and driven gear cooperation drove the setting of pivot lower extreme and rotates, through changing the cross section position of spherical valve in first siphunculus inside, and then changes contaminated air's flow size.
As a still further scheme of the invention: the ash scraping component comprises a slotted turntable, the slotted turntable is starfish-shaped, a brush is arranged on one side of the slotted turntable, and a limiting column is arranged at the corner position on the other side of the slotted turntable; the slotted rotary disc slowly rotates through the driving assembly, so that the brush cleans dust accumulated on the surface of the filter screen.
As a still further scheme of the invention: the drive assembly comprises a drive shaft, a reduction gearbox, a crank, a U-shaped block and a limiting rod, wherein one end of the drive shaft is installed inside the reduction gearbox, the reduction gearbox is installed and fixed on a support, the crank is installed on an output shaft of the reduction gearbox, one end of the crank is movably installed on the output shaft of the reduction gearbox, the other end of the crank is movably installed on the limiting rod through a hinge pin, one end of the limiting rod is provided with the U-shaped block, a U-shaped groove is formed in the U-shaped block, the other end of the limiting rod is movably installed on the limiting groove, the limiting groove is movably arranged on a fixed block.
As a still further scheme of the invention: the electrostatic dust collection assembly comprises a positive electrode assembly and a negative electrode assembly, the positive electrode assembly is arranged at the upper end of the second capacity expansion section, and the negative electrode assembly is installed and fixed at the lower end of the second capacity expansion section.
As a still further scheme of the invention: the positive electrode assembly comprises a positive electrode plate, a positive electrode connecting block and a positive electrode baffle plate, wherein the positive electrode connecting block is arranged at the upper end of the positive electrode plate, and the positive electrode baffle plate is arranged at the lower end of the positive electrode plate; the negative electrode assembly comprises a negative electrode baffle plate, a negative electrode plate and a transformer, wherein the negative electrode baffle plate is arranged at the upper end of the negative electrode plate, and a negative electrode electricity-connecting block is fixedly arranged at the lower end of the negative electrode plate; the negative baffle plate and the positive baffle plate are distributed at intervals in the second expansion section; the cathode baffle plate and the anode baffle plate are provided with discharge columns; the horizontal positions of the discharge columns on the negative baffle plate and the positive baffle plate are equal; through the structural design, the guide of the baffle plate to polluted air is facilitated, the purification time is prolonged, and the purification effect is improved.
As a still further scheme of the invention: the processing unit is characterized in that a transformer is arranged at the lower end of the processing unit body, the transformer is respectively connected with the positive electrode electricity connecting block and the negative electrode electricity connecting block through wires, and the positive electrode assembly and the negative electrode assembly are simultaneously supplied with power through centralized pressurization of the transformer.
Compared with the prior art, the invention has the beneficial effects that:
when the air purification treatment unit pushes the slotted turntable of the ash scraping component to rotate through the arranged driving component, the driving shaft enables the crank to rotate at a low speed through the reduction box, the crank pushes the limiting rod to move, one end of the limiting rod is movably arranged in the limiting groove in a limiting mode, and the limiting groove is movably arranged on the fixed block in a hinged mode through the pin shaft, so that the U-shaped block can be close to and retracted towards the limiting groove and can rotate at an angle position, finally the U-shaped groove formed in the U-shaped block is clamped with the limiting columns at different positions on the slotted turntable, the slow rotation of the whole slotted turntable is realized, the cleaning area of a brush arranged on the slotted turntable on a filter screen is increased, the staying time of the brush on the filter screen is prolonged, and the cleaning effect of the ash scraping component;
in addition, the electrostatic dust collection assembly improves the dust collection effect on polluted air.
Drawings
Fig. 1 is a schematic structural diagram of an air purification unit according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an ash scraping component of an air purification unit according to an embodiment of the present invention.
In the figure: 1-processing unit body, 2-air inlet, 3-first contraction section, 4-first through pipe, 5-ball valve, 6-rotating shaft, 7-driven gear, 8-driving gear, 9-motor, 10-first expansion section, 11-ash scraping component, 12-brush, 13-filter screen, 14-second through pipe, 15-blower, 16-positive pole electricity-receiving block, 17-positive pole plate, 18-positive pole baffle plate, 19-second contraction section, 20-air outlet port, 21-transformer, 22-negative pole plate, 23-negative pole baffle plate, 24-negative pole electricity-receiving block, 25-dust collecting pipe, 26-bracket, 27-slotted turntable, 28-limit column, 29-driving shaft, 30-reduction gearbox, 31-crank, 32-U-shaped block, 33-limiting rod, 34-limiting groove and 35-fixing block.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to specific embodiments.
Example 1
Referring to fig. 1, in embodiment 1 of the present invention, an air purification unit includes: the gas treatment device comprises a treatment unit body 1, wherein a gas inlet 2 is arranged on the left side of the treatment unit body 1, a gas outlet port 20 is arranged on the right side of the treatment unit body 1, and a first contraction section 3, a first expansion section 10, a second expansion section and a second contraction section 19 are arranged inside the treatment unit body 1 from left to right in sequence; the first contraction section 3 is communicated with the first expansion section 10 through a first through pipe 4; the first capacity expansion section 10 is communicated with the second capacity expansion section through a second through pipe 14;
an air inlet assembly is arranged in the first through pipe 4, an ash scraping assembly 11 and a filter screen 13 are arranged in the first expansion section 10, a brush 12 is arranged outside the ash scraping assembly 11, the brush 12 is in contact with the filter screen 13, and the upper end and the lower end of the ash scraping assembly 11 are fixedly arranged in the first expansion section 10 through a support 26; the lower end of the first expansion section 10 is communicated with a dust collecting pipe 25; a blower 15 is arranged in the second through pipe 14; an electrostatic dust removal assembly is arranged in the second expansion section;
polluted air to be treated enters the treatment unit body 1 through the air inlet 2, the polluted air is firstly concentrated into the first through pipe 4 through the first contraction section 3, and the air inlet assembly controls the flow of the polluted air inside the first through pipe 4; then the polluted air enters the first capacity expansion section 10, the filter screen 13 filters the polluted air in the first capacity expansion section 10, the dust intercepted from the surface of the filter screen 13 drives the brush 12 to clean the surface of the filter screen 13 through the dust scraping component 11, and the dust accumulated in the first capacity expansion section 10 is discharged through the position of the dust collecting pipe 25; next, the blower 15 is started, the blower 15 sucks the filtered air inside the first expansion section 10, the filtered air passes through the second pipe 14 and enters the second expansion section, the electrostatic dust collection operation is performed on the filtered air through the electrostatic dust collection component inside the second expansion section, and finally the air passes through the second contraction section 19 and then is discharged through the position of the air outlet port 20.
Further, the air inlet assembly comprises a ball valve 5, a rotating shaft 6 and a motor 9, the ball valve 5 is movably mounted inside the first through pipe 4, the rotating shaft 6 is arranged at the upper end of the ball valve 5, the upper end of the rotating shaft 6 passes through the inner wall of the first through pipe 4 and then is movably mounted through a shaft seal, a driven gear 7 is arranged on the rotating shaft 6, a driving gear 8 is mounted on a driving shaft of the motor 9, and the driven gear 7 arranged on the rotating shaft 6 is meshed with the driving gear 8 mounted on the driving shaft of the motor 9; when carrying out flow control regulation to the inside entering contaminated air of first siphunculus 4, through starter motor 9, motor 9 passes through driving gear 8 and driven gear 7 mating reaction and drives the ball valve 5 rotation that the lower extreme of pivot 6 set up, through changing the cross section position of ball valve 5 in first siphunculus 4 inside, and then changes contaminated air's flow size.
Example 2
Referring to fig. 2, further, the ash scraping assembly 11 includes a slotted turntable 27, the slotted turntable 27 is shaped like a starfish, one side of the slotted turntable 27 is provided with a brush 12, and a position of a corner of the other side of the slotted turntable 27 is provided with a limiting column 28; the slotted rotary disc 27 slowly rotates through the driving component so that the brush 12 cleans dust accumulated on the surface of the filter screen 13;
specifically, the driving assembly comprises a driving shaft 29, a reduction gearbox 30, a crank 31, a U-shaped block 32 and a limiting rod 33, one end of the driving shaft 29 is installed inside the reduction gearbox 30, the reduction gearbox 30 is installed and fixed on the support 26, the crank 31 is installed on an output shaft of the reduction gearbox 30, one end of the crank 31 is movably installed on the output shaft of the reduction gearbox 30, the other end of the crank 31 is hinged and movably installed on the limiting rod 33 through a pin shaft, the U-shaped block 32 is arranged at one end of the limiting rod 33, a U-shaped groove is formed in the U-shaped block 32, the other end of the limiting rod 33 is movably installed on the limiting groove 34, the limiting groove 34 is movably arranged on a fixing block 35 through a pin;
when the driving assembly pushes the slotted turntable 27 to rotate, the driving shaft 29 enables the crank 31 to rotate at a slow speed through the reduction gearbox 30, the crank 31 pushes the limiting rod 33 to displace, one end of the limiting rod 33 is movably arranged in the limiting groove 34 due to limiting, and the limiting groove 34 is movably arranged on the fixing block 35 through a pin shaft in a hinged mode, so that the U-shaped block 32 can be close to and retracted towards the limiting groove 34 and can rotate the angle position, and finally the U-shaped groove formed in the U-shaped block 32 is clamped with the limiting columns 28 at different positions on the slotted turntable 27, and the slow rotation of the whole slotted turntable 27 is realized;
the rest of the structure of example 2 is the same as example 1.
Example 3
Furthermore, the electrostatic dust removal assembly comprises a positive electrode assembly and a negative electrode assembly, the positive electrode assembly is arranged at the upper end of the second capacity expansion section, and the negative electrode assembly is fixedly arranged at the lower end of the second capacity expansion section;
specifically, the positive electrode assembly comprises a positive electrode plate 17, a positive electrode connecting block 16 and a positive electrode baffle plate 18, wherein the positive electrode connecting block 16 is arranged at the upper end of the positive electrode plate 17, and the positive electrode baffle plate 18 is arranged at the lower end of the positive electrode plate 17; the negative component comprises a negative baffle plate 23, a negative plate 22 and a transformer 21, the upper end of the negative plate 22 is provided with the negative baffle plate 23, and the lower end of the negative plate 22 is fixedly provided with a negative electricity-connecting block 24; the space between the cathode baffle plate 23 and the anode baffle plate 18 is distributed at intervals in the second expansion section; the cathode baffle plate 23 and the anode baffle plate 18 are provided with discharge columns; the horizontal positions of the discharge columns on the cathode baffle plate 23 and the discharge columns on the anode baffle plate 18 are equal; through the structural design, the guide of the baffle plate to polluted air is facilitated, the purification time is prolonged, and the purification effect is facilitated to be improved;
furthermore, a transformer 21 is arranged at the lower end of the processing unit body 1, the transformer 21 is respectively connected with the positive electrode connecting block 16 and the negative electrode connecting block 24 through leads, and the transformer 21 is used for intensively boosting the voltage to simultaneously supply power to the positive electrode assembly and the negative electrode assembly;
the rest of the structure of example 3 is the same as example 1.
The working principle of the invention is as follows:
polluted air to be treated enters the treatment unit body 1 through the air inlet 2, the polluted air is firstly concentrated into the first through pipe 4 through the first contraction section 3, and the air inlet assembly controls the flow of the polluted air inside the first through pipe 4; then the polluted air enters the first capacity expansion section 10, the filter screen 13 filters the polluted air in the first capacity expansion section 10, the dust intercepted from the surface of the filter screen 13 drives the brush 12 to clean the surface of the filter screen 13 through the dust scraping component 11, and the dust accumulated in the first capacity expansion section 10 is discharged through the position of the dust collecting pipe 25; next, the blower 15 is started, the blower 15 sucks the filtered air inside the first expansion section 10, the filtered air passes through the second pipe 14 and enters the second expansion section, the electrostatic dust collection operation is performed on the filtered air through the electrostatic dust collection component inside the second expansion section, and finally the air passes through the second contraction section 19 and then is discharged through the position of the air outlet port 20.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (7)

1. An air purification unit, comprising: handle unit body (1), its characterized in that:
the left side of the processing unit body (1) is provided with an air inlet (2), the right side of the processing unit body (1) is provided with an air outlet port (20), and a first contraction section (3), a first expansion section (10), a second expansion section and a second contraction section (19) are arranged inside the processing unit body (1) from left to right in sequence; the first contraction section (3) is communicated with the first expansion section (10) through a first through pipe (4); the first capacity expansion section (10) is communicated with the second capacity expansion section through a second through pipe (14);
an air inlet assembly is installed inside the first through pipe (4), an ash scraping assembly (11) and a filter screen (13) are arranged inside the first expansion section (10), a brush (12) is arranged on the outer side of the ash scraping assembly (11), the brush (12) is in contact with the filter screen (13), and the upper end and the lower end of the ash scraping assembly (11) are fixedly installed inside the first expansion section (10) through a support (26); the lower end of the first expansion section (10) is communicated with a dust collecting pipe (25); a blower (15) is arranged in the second through pipe (14); and an electrostatic dust removal assembly is arranged in the second expansion section.
2. The air purification unit of claim 1, wherein: the air inlet assembly comprises a ball valve (5), a rotating shaft (6) and a motor (9), wherein the ball valve (5) is movably mounted inside a first through pipe (4), the upper end of the ball valve (5) is provided with the rotating shaft (6), the upper end of the rotating shaft (6) penetrates through the inner wall of the first through pipe (4) and then is movably mounted through a shaft seal, a driven gear (7) is arranged on the rotating shaft (6), a driving gear (8) is mounted on a driving shaft of the motor (9), and the driven gear (7) arranged on the rotating shaft (6) is meshed with the driving gear (8) mounted on the driving shaft of the motor (9).
3. The air purification unit of claim 1, wherein: scrape grey subassembly (11) including fluting carousel (27), fluting carousel (27) is starfish form, fluting carousel (27) one side is equipped with brush (12), and fluting carousel (27) another side corner position department is equipped with spacing post (28), and fluting carousel (27) realizes rotating through drive assembly.
4. The air purification unit of claim 3, wherein: the driving component comprises a driving shaft (29) and a reduction box (30), crank (31), U-shaped piece (32) and gag lever post (33), drive shaft (29) one end is installed inside reducing gear box (30), reducing gear box (30) installation is fixed on support (26), install crank (31) on the output shaft of reducing gear box (30), crank (31) one end movable mounting is on the output shaft of reducing gear box (30), crank (31) other end is through the articulated movable mounting of round pin axle on gag lever post (33), gag lever post (33) one end is equipped with U-shaped piece (32), the U-shaped groove has been seted up on U-shaped piece (32), gag lever post (33) other end movable mounting is on gag lever post (34), gag lever post (34) are through round pin axle activity setting on fixed block (35), fixed block (35) are connected fixedly with support (26) of first dilatation section (10) inside lower extreme.
5. The air purification unit of claim 1, wherein: the electrostatic dust collection assembly comprises a positive electrode assembly and a negative electrode assembly, the positive electrode assembly is arranged at the upper end of the second capacity expansion section, and the negative electrode assembly is installed and fixed at the lower end of the second capacity expansion section.
6. The air purification unit of claim 5, wherein: the positive electrode assembly comprises a positive electrode plate (17), a positive electrode electricity-connecting block (16) and a positive electrode baffle plate (18), wherein the positive electrode electricity-connecting block (16) is arranged at the upper end of the positive electrode plate (17), and the positive electrode baffle plate (18) is arranged at the lower end of the positive electrode plate (17); the negative electrode assembly comprises a negative electrode baffle plate (23), a negative electrode plate (22) and a transformer (21), the upper end of the negative electrode plate (22) is provided with the negative electrode baffle plate (23), and the lower end of the negative electrode plate (22) is fixedly provided with a negative electrode connecting block (24); the negative baffle plate (23) and the positive baffle plate (18) are distributed at intervals in the second expansion section; discharge columns are arranged on the cathode baffle plate (23) and the anode baffle plate (18); the horizontal positions of the discharge columns on the negative baffle plate (23) and the discharge columns on the positive baffle plate (18) are equal.
7. The air purification unit of claim 6, wherein: the lower end of the processing unit body (1) is provided with a transformer (21), and the transformer (21) is respectively connected with a positive electrode electricity-connecting block (16) and a negative electrode electricity-connecting block (24) through leads.
CN202010654879.7A 2020-07-09 2020-07-09 Air purification treatment unit Withdrawn CN111795441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010654879.7A CN111795441A (en) 2020-07-09 2020-07-09 Air purification treatment unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010654879.7A CN111795441A (en) 2020-07-09 2020-07-09 Air purification treatment unit

Publications (1)

Publication Number Publication Date
CN111795441A true CN111795441A (en) 2020-10-20

Family

ID=72809833

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010654879.7A Withdrawn CN111795441A (en) 2020-07-09 2020-07-09 Air purification treatment unit

Country Status (1)

Country Link
CN (1) CN111795441A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112325426A (en) * 2020-10-27 2021-02-05 大连交通大学 Multifunctional indoor air odor removal treatment device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112325426A (en) * 2020-10-27 2021-02-05 大连交通大学 Multifunctional indoor air odor removal treatment device

Similar Documents

Publication Publication Date Title
CN208115338U (en) A kind of dust clarifier
CN212467421U (en) Dust collector for municipal building
CN110812970A (en) A high-efficient type ventilation dust collecting equipment for industrial production workshop
CN111795441A (en) Air purification treatment unit
CN213421330U (en) Multilayer purifies new trend clearing machine
CN209531140U (en) A kind of interior cleaner
CN109794471A (en) A kind of computer cabinet clearing apparatus
CN215085558U (en) Movable waste gas purification device with built-in power supply
CN216864964U (en) Expansion joint dust collector for bridge maintenance
CN2708983Y (en) Internal brush type pollution discharge filter
CN215085671U (en) High negative pressure dust remover
CN216720559U (en) Power distribution station direct current screen device with automatic dust removal mechanism
CN216174455U (en) Box detection cabinet of air conditioner
CN212523546U (en) Air purification device for construction
CN109579157B (en) Fresh air dehumidifier with electrostatic dust collection function
CN215843588U (en) Electrostatic adsorption pulse dust removal bag-type dust collector
CN216173125U (en) Dust collection device to calcium carbonate grinding
CN216244753U (en) Indoor air purification device
CN212467360U (en) Filter device of sewage treatment equipment
CN216136887U (en) Waste gas purification device
CN216934872U (en) But remote control's water purification unit
CN215923829U (en) A restrain dust device for power plant's coal conveying
CN213657035U (en) Automatic air purification device of regulation
CN216498474U (en) Adsorption dryer with cleaning mechanism
CN214581724U (en) Clean room temperature and humidity control device with circulating ventilation function

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20201020