CN110657540B - A fresh air purification device - Google Patents
A fresh air purification device Download PDFInfo
- Publication number
- CN110657540B CN110657540B CN201810713532.8A CN201810713532A CN110657540B CN 110657540 B CN110657540 B CN 110657540B CN 201810713532 A CN201810713532 A CN 201810713532A CN 110657540 B CN110657540 B CN 110657540B
- Authority
- CN
- China
- Prior art keywords
- fresh air
- filter screen
- sleeve
- pivot
- primary filter
- 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.)
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Links
- 238000004887 air purification Methods 0.000 title claims abstract description 7
- 239000000428 dust Substances 0.000 claims abstract description 52
- 238000004140 cleaning Methods 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000001914 filtration Methods 0.000 abstract description 9
- 238000000746 purification Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/18—Particle separators, e.g. dust precipitators, using filtering belts
- B01D46/20—Particle separators, e.g. dust precipitators, using filtering belts the belts combined with drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/90—Cleaning of purification apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
一种新风净化装置，包括机壳，机壳具有新风进口和新风出口，其特征在于：在机壳内部安装有初效过滤网、高效过滤网、除尘器、集尘器和风机，初效过滤网和高效过滤网依次设置在新风进口与风机进风口之间的风道内，除尘器用来清除附着在初效过滤网上的灰尘，且清除后的灰尘被收集在集尘器中，风机的出风口与新风出口相连通。本发明的优点在于：该新风净化装置的初效过滤网和高效过滤网依次设置所述新风进口与风机进风口之间的风道内，附着在初效过滤网上的灰尘可以通过除尘器用来清除，清除后的灰尘被收集在集尘器中，使得净化装置长久工作后也能始终保持滤网清洁，进而提高空气过滤效果，同时也利于延长滤网的使用寿命。
A fresh air purification device includes a casing, the casing has a fresh air inlet and a fresh air outlet, and is characterized in that: a primary filter, a high-efficiency filter, a dust collector, a dust collector and a fan are installed inside the casing, the primary filter and the high-efficiency filter are sequentially arranged in the air duct between the fresh air inlet and the air inlet of the fan, the dust collector is used to remove dust attached to the primary filter, and the removed dust is collected in the dust collector, and the air outlet of the fan is connected to the fresh air outlet. The advantage of the present invention is that the primary filter and the high-efficiency filter of the fresh air purification device are sequentially arranged in the air duct between the fresh air inlet and the air inlet of the fan, the dust attached to the primary filter can be removed by the dust collector, and the removed dust is collected in the dust collector, so that the filter can always be kept clean after the purification device has been working for a long time, thereby improving the air filtration effect, and also helping to extend the service life of the filter.
Description
Technical Field
The invention relates to a fresh air purifying device.
Background
Along with the increasing degree of modernization of society, the production and life style of people are changed greatly, the time for people to work, live and move indoors is longer, and the activities such as work, entertainment and sports can be carried out indoors, so that the average time of more than 80% of people per day is spent indoors according to statistics, and the indoor air quality has a vital influence on the health of human bodies.
At present, there is a fresh air ventilator for changing fresh air in the market, fresh air ventilator during operation, outdoor air gets into in the ventilator from outdoor air inlet, then, the impurity in the external air is clear away through just effective filter screen, well effect filter screen, static dust removal case in proper order, simultaneously, indoor air gets into the ventilator from indoor air inlet, exchange the heat of indoor air to the new air that gets in from the outdoor through heat exchanger, afterwards, new air gets into indoor after further processing, indoor old air discharges outdoors. Although the fresh air ventilator can effectively purify indoor air, after the fresh air ventilator is used for a long time, dust particles after filtration are easily adhered to a primary filter screen, a middle-effect filter screen and an electrostatic dust removal box, so that the fresh air ventilator is blocked, and further the air filtration effect is poor.
Disclosure of Invention
Aiming at the current state of the art, the invention provides the fresh air purifying device with simple structure and good air filtering effect.
The fresh air purifying device comprises a machine shell, wherein the machine shell is provided with a fresh air inlet and a fresh air outlet, and is characterized in that a primary filter screen, a high-efficiency filter screen, a dust remover, a dust collector and a fan are arranged in the machine shell, the primary filter screen and the high-efficiency filter screen are sequentially arranged in an air duct between the fresh air inlet and an air inlet of the fan, the dust remover is used for removing dust attached to the primary filter screen, the removed dust is collected in the dust collector, and an air outlet of the fan is communicated with the fresh air outlet.
The primary filter screen can rotate back and forth under the drive of the drive mechanism, the dust remover is always in contact with the surface of the primary filter screen, and the primary filter screen can drive the dust remover to synchronously rotate.
As a preferred scheme, actuating mechanism is including installing motor, first sleeve, second sleeve, back shaft and the axis of rotation in the casing, first sleeve, second sleeve, back shaft and axis of rotation axial parallel arrangement, the motor drive first sleeve rotates, just imitates the both ends of filter screen and winds respectively around axis of rotation and back shaft to wind respectively on first sleeve and the second sleeve, the dust remover include the pivot and install at epaxial cleaning brush, the pivot is close to the axis of rotation and parallels with the axis of rotation, the axis of rotation drives the pivot and rotates, the cleaning brush always with just imitate the filter screen contact. Thus, the primary filter screen can move back and forth between the first sleeve and the second sleeve, so that the cleaning brush can clean the whole filter screen.
Further preferably, the second sleeve is located above the first sleeve, the first sleeve and the second sleeve are close to the fresh air inlet, the supporting shaft is located above the rotating shaft, and the supporting shaft and the rotating shaft are close to the efficient filter screen.
In order to make the rotation speed of the rotating shaft be greater than that of the rotating shaft, a gear accelerating mechanism which can make the rotation speed of the rotating shaft be greater than that of the rotating shaft is arranged between the rotating shaft and the rotating shaft.
The dust collector may have various structures, and preferably, the dust collector is a dust collection box, which is located right under the cleaning brush.
Further preferably, the motor is a gear motor.
Further preferably, the rotating shaft is a driven shaft which is driven by the primary filter screen to synchronously rotate. The primary filter screen is tightly matched with the rotating shaft, so that the rotating shaft can be driven to rotate when the primary filter screen moves.
As another preferred scheme, actuating mechanism includes gear motor, first back shaft, second back shaft and third back shaft, gear motor's output shaft with first back shaft, second back shaft, the coaxial setting of third back shaft, just imitate the filter screen and enclose on gear motor's output shaft, first back shaft, second back shaft and the third back shaft and rotate under gear motor's drive, and just imitate the filter screen and form first filter surface and the second filter surface of relative setting, first filter surface is close to the fresh air import, the second filter surface is close to high-efficient filter screen, the dust remover includes the pivot and installs at pivot cleaning brush, the pivot is close to first back shaft and parallels with first back shaft, first back shaft drives the pivot and rotates, the cleaning brush always with just imitate the filter screen contacts. Therefore, bipolar filtration of the primary filter screen can be formed, and the filtering effect is greatly improved.
Further preferably, the fan is a centrifugal fan.
In order to enable the fresh air flowing into the shell to be smoother, the air inlet of the fan faces to the fresh air inlet, and the air outlet of the fan faces to the fresh air outlet.
Compared with the prior art, the fresh air purifying device has the advantages that the primary filter screen and the high-efficiency filter screen of the fresh air purifying device are sequentially arranged in the air duct between the fresh air inlet and the air inlet of the fan, dust attached to the primary filter screen can be removed through the dust remover, and the removed dust is collected in the dust collector, so that the filter screen can be kept clean all the time after the purifying device works for a long time, the air filtering effect is improved, and the service life of the filter screen is prolonged.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic view of an installation structure of a primary filter screen according to a first embodiment of the present invention;
FIG. 3 is a schematic view of a mounting structure according to a first embodiment of the present invention;
fig. 4 is a schematic diagram of a mounting structure of a second embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Embodiment one:
As shown in fig. 1 and 2, the fresh air purifying device in the present embodiment includes a casing 1, the casing 1 having a fresh air inlet 11 and a fresh air outlet 12, and a primary filter screen 2, a high efficiency filter screen 3, a dust collector 4, a dust collector 5, and a fan 6 being installed inside the casing 1. Wherein, the primary filter screen 2 and the high-efficiency filter screen 3 are sequentially arranged in the air channel between the fresh air inlet 11 and the air inlet of the fan 6, the dust remover 4 is used for removing dust attached to the primary filter screen 2, the removed dust is collected in the dust collector 5, and the air outlet of the fan 6 is communicated with the fresh air outlet 12. The fan 6 adopts centrifugal fan, and the air intake of fan 6 is towards fresh air inlet 11, and the air outlet of fan 6 is towards fresh air outlet 12.
In this embodiment, a driving mechanism for driving the primary filter screen 2 to rotate is installed in the casing 1, and the driving mechanism includes a motor 71, a first sleeve 72, a second sleeve 73, a supporting shaft 74 and a rotating shaft 75, where the first sleeve 72, the second sleeve 73, the supporting shaft 74 and the rotating shaft 75 are axially parallel, and the second sleeve 73 is located above the first sleeve 72, and the first sleeve 72 and the second sleeve 73 are close to the fresh air inlet 11, the supporting shaft 74 is above the rotating shaft 75, and the supporting shaft 74 and the rotating shaft 75 are close to the efficient filter screen 3. The motor 71 employs a gear motor and serves to drive the first sleeve 72 to rotate. The both ends of the preliminary filtering net 2 are wound around the rotation shaft 75 and the support shaft 74, respectively, and wound around the first sleeve 72 and the second sleeve 73, respectively. The rotating shaft 75 is a driven shaft, the rotating shaft 75 is tightly matched with the primary filter screen 2, and the rotating shaft 75 can be driven to synchronously rotate when the primary filter screen 2 moves.
The dust remover 4 comprises a rotating shaft 41 and a cleaning brush 42 arranged on the rotating shaft, wherein the rotating shaft 41 is close to the rotating shaft 75 and parallel to the rotating shaft 75, and the rotating shaft 75 drives the rotating shaft 41 to rotate. In the present embodiment, in order to increase the rotational speed of the rotating shaft 41, a gear acceleration mechanism 8 that can make the rotational speed of the rotating shaft 41 larger than the rotational speed of the rotating shaft 75 is mounted between the rotating shaft 75 and the rotating shaft 41. The cleaning brush 42 is in a strip shape and always contacts with the primary filter screen 2, and the cleaning brush 42 continuously rotates along with the rotation of the rotating shaft 41, so that the cleaning effect can be improved.
The dust collecting box 5 of the embodiment is a dirt collecting box, and the dirt collecting box 5 is located right below the cleaning brush 42, so that the cleaning brush 42 brushes dust into the dirt collecting box.
As shown in fig. 3, the fresh air purifying device is installed in a wall-mounted manner, a fresh air channel 91 for communicating a fresh air inlet 11 with the outside is formed in a wall 9, a solar rain cover 10 is installed at an air inlet of the fresh air channel 91, and the solar rain cover 10 can be opened or closed as required. When the purification device is not used, the solar rain cover 10 closes the fresh air channel 91, and when the purification device is started, the solar rain cover 10 is opened to prevent rainwater from entering the fresh air purification device through the fresh air channel 91.
When the fresh air purification device works, outdoor air sequentially enters the shell 1 through the fresh air channel 91 and the fresh air inlet 11, enters the fan 6 after sequentially passing through the primary filter screen 2 and the primary filter screen 3 under the action of the fan 6, and after a period of working, the motor 71 starts to rotate, the primary filter screen 2 is transited to the second sleeve 73 by the first sleeve 72, meanwhile, the cleaning brush 42 continuously cleans the corresponding position of the primary filter screen 2, and sundries such as brushed dust enter the dust box, so that the primary filter screen 2 is kept clean. When the primary filter screen 2 is completely transited from the first sleeve 72 to the second sleeve 73, the motor 71 is reversed, and the cleaned primary filter screen 2 is rewound on the first sleeve 72, so that the cleaning purpose is achieved, and the service life of the primary filter screen 2 is effectively prolonged.
Embodiment two:
As shown in fig. 4, the driving mechanism of the present embodiment includes a gear motor 76, a first support shaft 77, a second support shaft 78 and a third support shaft 79, the output shaft of the gear motor 76 is coaxially disposed with the first support shaft 77, the second support shaft 78 and the third support shaft 79, the primary filter screen 2 is enclosed on the output shaft of the gear motor 76, the first support shaft 77, the second support shaft 78 and the third support shaft 79 and rotates under the driving of the gear motor 76, and the primary filter screen 2 forms a first filter surface 21 and a second filter surface 22 which are oppositely disposed, the first filter surface 21 is close to the fresh air inlet 11, and the second filter surface 22 is close to the efficient filter screen 3. The dust remover 4 of this embodiment includes a rotating shaft 41 and a cleaning brush 42 mounted on the rotating shaft, the rotating shaft 41 is close to the first supporting shaft 77 and parallel to the first supporting shaft 77, the first supporting shaft 77 drives the rotating shaft 41 to rotate, the cleaning brush 42 is always in contact with the primary filter screen 2, and the rotation direction of the cleaning brush 42 is the same as that of the first supporting shaft 77.
In operation, the primary filter screen 2 of this embodiment can form bipolar filtration, can avoid the pollutant of adhesion on the first filter surface 21 on the primary filter screen 2 to directly blow in the high-efficiency filter screen 3 when rotating to the second filter surface 22, promotes purifying effect greatly. The remaining structure of this embodiment is the same as that of the first embodiment, and will not be described here.
Claims (3)
1. A fresh air purifying device comprises a machine shell (1), wherein the machine shell (1) is provided with a fresh air inlet (11) and a fresh air outlet (12), the fresh air purifying device is characterized in that a primary filter screen (2), a high-efficiency filter screen (3), a dust collector (4), a dust collector (5) and a fan (6) are arranged in the machine shell (1), the primary filter screen (2) and the high-efficiency filter screen (3) are sequentially arranged in an air channel between the fresh air inlet (11) and an air inlet of the fan (6), the dust collector (4) is used for removing dust attached to the primary filter screen (2), the removed dust is collected in the dust collector (5), an air outlet of the fan (6) is communicated with the fresh air outlet, the primary filter screen (2) can rotate back and forth under the driving of a driving mechanism, the driving mechanism comprises a motor (71), a first sleeve (72), a second sleeve (73), a supporting shaft (74) and a rotating shaft (75), the first sleeve (72), the second sleeve (73), the supporting shaft (74) and the rotating shaft (75) are arranged in parallel to the primary filter screen (2) and the primary filter screen (75), and wind respectively on first sleeve (72) and second sleeve (73), dust remover (4) include pivot (41) and install in epaxial cleaning brush (42), pivot (41) are close to pivot (75) and parallel with the axis of rotation, pivot (75) drive pivot (41) rotate, cleaning brush (42) all the time with just imitate filter screen (2) contact, second sleeve (73) are located the top of first sleeve (72), and first sleeve (72) and second sleeve (73) are close to fresh air inlet (11), back shaft (74) are the top of pivot (75), and back shaft (74) and pivot (75) are close to high-efficient filter screen (3), install between pivot (75) and pivot (41) and enable pivot rotational speed to be greater than gear accelerating mechanism (8) of pivot rotational speed, pivot (75) are driven shaft (2) drive down synchronous rotation's driven.
2. The fresh air purification device according to claim 1, wherein the dust collector (5) is a dust collection box, and the dust collection box is positioned right below the cleaning brush (42).
3. The fresh air purification device according to claim 1, wherein the motor (71) is a gear motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713532.8A CN110657540B (en) | 2018-06-29 | 2018-06-29 | A fresh air purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713532.8A CN110657540B (en) | 2018-06-29 | 2018-06-29 | A fresh air purification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110657540A CN110657540A (en) | 2020-01-07 |
| CN110657540B true CN110657540B (en) | 2025-02-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810713532.8A Active CN110657540B (en) | 2018-06-29 | 2018-06-29 | A fresh air purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110657540B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393353B (en) * | 2020-11-17 | 2021-12-07 | 南京邮电大学 | Intelligent ventilation clean system on building |
| CN112957828B (en) * | 2021-01-29 | 2022-05-31 | 华为数字能源技术有限公司 | Filter screen cleaning system, filter screen cleaning method and data center |
| CN112999785A (en) * | 2021-02-03 | 2021-06-22 | 江苏丰尚智能科技有限公司 | Fodder drying-machine and filter screen self-cleaning device thereof |
| CN112999784A (en) * | 2021-02-03 | 2021-06-22 | 江苏丰尚智能科技有限公司 | Fodder drying-machine and filter screen self-cleaning device thereof |
| CN113280436B (en) * | 2021-06-04 | 2022-07-01 | 北京格林贝斯装饰工程有限公司 | An indoor ventilation and air purification system |
| CN113405188B (en) * | 2021-06-24 | 2022-09-13 | 北京中海文设备安装有限公司 | Environment-friendly fresh air handling unit mounting structure and construction process thereof |
| CN113654164B (en) * | 2021-08-25 | 2022-12-23 | 佛山市香莱诗香薰有限公司 | Energy-saving and environment-friendly air purifier |
| CN114791131B (en) * | 2022-04-08 | 2025-09-19 | 珠海格力电器股份有限公司 | Air conditioner indoor unit with fresh air function and air conditioner |
| CN115264721B (en) * | 2022-06-16 | 2023-09-15 | 安徽理工大学 | A new type of healthy and energy-saving air purification system |
| CN115468255A (en) * | 2022-08-22 | 2022-12-13 | 森鹰窗业南京有限公司 | A window with a fresh air system |
| FR3148531B1 (en) * | 2023-05-09 | 2025-05-02 | Welter’S Co Ltd | EXHAUST GAS EMISSION CIRCULATION FILTERING APPARATUS FOR AIR POLLUTION PREVENTION |
| CN120890129B (en) * | 2025-09-30 | 2025-12-23 | 江苏金环科技有限公司 | Fresh air handling unit for temperature and humidity control and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208735831U (en) * | 2018-06-29 | 2019-04-12 | 宁波方太厨具有限公司 | A kind of fresh air purification device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2654124Y (en) * | 2003-09-25 | 2004-11-10 | 杨乐锡 | Air purifier |
| CN205208748U (en) * | 2015-10-21 | 2016-05-04 | 广州快净环保科技有限公司 | Fresh air purifier |
| KR101860634B1 (en) * | 2016-07-01 | 2018-05-23 | 최옥선 | Air cleanning System |
| CN206637745U (en) * | 2017-03-31 | 2017-11-14 | 浙江地球村环保科技有限公司 | A kind of automatically cleaning fresh air purification device and automatically cleaning New-air purifying system |
| CN107166519A (en) * | 2017-05-25 | 2017-09-15 | 泰豪科技股份有限公司 | A kind of high purification efficiency fan coil units |
| CN107131602A (en) * | 2017-05-26 | 2017-09-05 | 山东泰朗禾通风设备有限公司 | A kind of wall-mounted fresh air purifying all-in-one |
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2018
- 2018-06-29 CN CN201810713532.8A patent/CN110657540B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208735831U (en) * | 2018-06-29 | 2019-04-12 | 宁波方太厨具有限公司 | A kind of fresh air purification device |
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