CN112303797B - Intelligent environmental protection oxygen supply equipment of building - Google Patents
Intelligent environmental protection oxygen supply equipment of building Download PDFInfo
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- CN112303797B CN112303797B CN202011093501.0A CN202011093501A CN112303797B CN 112303797 B CN112303797 B CN 112303797B CN 202011093501 A CN202011093501 A CN 202011093501A CN 112303797 B CN112303797 B CN 112303797B
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- Prior art keywords
- detachably arranged
- sleeve
- upper cover
- shell
- top end
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Classifications
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- 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
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
Abstract
The invention discloses an intelligent environment-friendly oxygen supply device for buildings, which comprises: a box body; the heater is detachably arranged on the right side of the inner cavity of the box body; the shell is detachably arranged at an opening at the top end of the box body; the fan is connected to the bottom end of the inner cavity of the shell through screws; the filtering mechanism is detachably arranged at the top end of the shell; the check valve is connected with the opening at the left side of the box body through a screw; one end of the pipeline is detachably arranged on the left side of the check valve; the outer cover is detachably arranged at the other end of the pipeline; the wind direction adjusting mechanism is detachably arranged on the left side of the outer cover; the oxygen concentration monitor can be detachably arranged at the front end of the left side of the wind direction adjusting mechanism and is electrically connected with the heater and the fan. The invention can facilitate the replacement of the air filter element, achieve the purpose of filtering the oxygen supply air, ensure that people breathe clean air, protect the health of a respiratory tract, change the air discharge angle and meet the requirement of large-area indoor oxygen supply.
Description
Technical Field
The invention relates to the technical field of building intellectualization, in particular to an intelligent environment-friendly oxygen supply device for a building.
Background
The building is taken as a platform, based on comprehensive application of various intelligent information, the architecture, the system, the application, the management and the optimization combination are integrated into a whole, the comprehensive intelligent capabilities of perception, transmission, memory, reasoning, judgment and decision are realized, an integrated body with mutual coordination of people, the building and the environment is formed, and the building with the functional environment of safety, high efficiency, convenience and sustainable development is provided for people, so that the purpose of building intellectualization can be realized, and the attributes of the building, such as safety, high efficiency, convenience, energy conservation, environmental protection, health and the like, can be realized;
under winter cold weather, the position of ventilating such as building window is confined usually, in order to prevent that external cold air from getting into, influence indoor temperature, the air mobility reduces, indoor oxygen concentration also can reduce naturally, often need use oxygen supply equipment to provide fresh air, common oxygen supply equipment though can be for indoor air that provides, however, the external air pollution nature is big, direct discharge can influence people's respiratory tract health indoor, in addition, the air discharge angle is difficult to change, can't satisfy the demand of indoor large tracts of land oxygen suppliment.
Disclosure of Invention
The invention aims to provide intelligent environment-friendly oxygen supply equipment for buildings, which at least solves the problems that the prior art can not filter outside air, affects the respiratory tract health of people, has a small air diffusion range and has a poor oxygen supply effect.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a building intelligent environmental protection oxygen supply equipment, includes:
a box body;
the heater is detachably arranged on the right side of the inner cavity of the box body;
the shell is detachably arranged at an opening at the top end of the box body;
the fan is connected to the bottom end of the inner cavity of the shell through screws;
the filtering mechanism is detachably arranged at the top end of the shell;
the check valve is connected with the opening at the left side of the box body through a screw;
one end of the pipeline is detachably arranged on the left side of the check valve;
the outer cover is detachably arranged at the other end of the pipeline;
the wind direction adjusting mechanism is detachably arranged on the left side of the outer cover;
the oxygen concentration monitor can be detachably arranged at the front end of the left side of the wind direction adjusting mechanism and is electrically connected with the heater and the fan.
Preferably, the filter mechanism comprises: the sleeve is detachably arranged at the top end of the shell, and limiting grooves are formed in the top end of the sleeve along the circumferential direction; the air filter element is inserted into the inner cavity of the sleeve; the spring is embedded in the groove on the inner wall of the sleeve and corresponds to the position of the limiting groove; the clamping ball is embedded in the groove on the inner wall of the sleeve, and a part of the clamping ball extends out of the inner wall of the sleeve under the action of the spring; the upper cover is inserted at the top end of the inner cavity of the sleeve, clamping grooves are formed in the bottom end of the outer wall of the upper cover, clamping balls are inserted into the clamping grooves to position the upper cover, and air inlet holes are formed in the middle of the outer wall of the upper cover along the circumferential direction; the filter screen is detachably arranged in the middle of the inner wall of the upper cover; the three limiting rods are circumferentially arranged at the bottom end of the upper cover and are embedded in the inner cavity of the limiting groove to limit the upper cover; and the handle is fixedly connected to the top end of the upper cover.
Preferably, the number of the limiting grooves is three, and the three limiting grooves are distributed on the top end of the sleeve at intervals of 120 degrees clockwise.
Preferably, the maximum length of the clamping ball extending out of the inner wall of the sleeve under the action of the spring is smaller than the radius of the clamping ball.
Preferably, the bottom end of the limiting rod is conical.
The intelligent environment-friendly oxygen supply equipment for the building, provided by the invention, has the beneficial effects that:
1. the upper cover is limited through the matching of the limiting groove on the filtering mechanism and the limiting rod, and the upper cover can be separated from or fixed on the sleeve by utilizing the matching of the spring, the clamping ball and the clamping groove, so that the replacement of an air filter element can be facilitated, the purpose of filtering oxygen supply air is achieved, people can be ensured to breathe clean air, and the respiratory tract health is protected;
2. the driving lever can be driven to do circular motion by the motor on the wind direction adjusting mechanism, and under the matching of the sliding rod and the sliding groove, the driving lever can drive the sliding block to reciprocate left and right, so that the rack driving gear rotates clockwise and anticlockwise in a reciprocating way, the blades swing back and forth, the air discharge angle is changed, and the requirement of supplying oxygen in a large area indoors is met.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front sectional view of FIG. 1;
FIG. 3 is a schematic diagram of the filter mechanism of FIG. 1 in a disassembled configuration;
FIG. 4 is an enlarged view taken at A in FIG. 2;
FIG. 5 is an enlarged view of FIG. 2 at B;
FIG. 6 is a left side sectional view of the wind direction adjustment mechanism of FIG. 2;
fig. 7 is an enlarged view of fig. 6 at C.
In the figure: 1. the air purifier comprises a box body, 2, a heater, 3, a shell, 4, a fan, 5, a filtering mechanism, 51, a sleeve, 52, a limiting groove, 53, an air filter element, 54, a spring, 55, a clamping ball, 56, an upper cover, 57, a clamping groove, 58, an air inlet hole, 59, a filter screen, 510, a limiting rod, 511, a handle, 6, a check valve, 7, a pipeline, 8, an outer cover, 9, a wind direction adjusting mechanism, 91, a base, 92, a blade, 93, a gear, 94, a mounting shell, 95, a sliding rod, 96, a sliding block, 97, a sliding groove, 98, a motor, 99, a cam, 910, a deflector rod, 911, a rack, 10 and an oxygen concentration monitor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: an intelligent environment-friendly oxygen supply device for buildings comprises a box body 1, a heater 2, a shell 3, a fan 4, a filtering mechanism 5, a check valve 6, a pipeline 7, an outer cover 8, a wind direction adjusting mechanism 9 and an oxygen concentration monitor 10, wherein the heater 2 is detachably arranged on the right side of an inner cavity of the box body 1, the purified air can be converted into hot air by the heater 2, the shell 3 is detachably arranged at the opening at the top end of the box body 1, the fan 4 is connected to the bottom end of the inner cavity of the shell 3 through screws, external air can be sucked into the box body 1 through the fan 4 and is discharged after being heated, the filtering mechanism 5 is detachably arranged at the top end of the shell 3, the check valve 6 is connected to the opening at the left side of the box body 1 through screws, the check valve 6 is a one-way valve, indoor air is prevented from entering the box body 1 through the pipeline 7, one end of the pipeline 7 is detachably arranged at the left side of the check valve 6, the outer cover 8 is detachably arranged at the other end of the pipeline 7, wind direction adjustment mechanism 9 can be dismantled and set up in the left side of dustcoat 8, and oxygen concentration monitor 10 can be dismantled and set up in wind direction adjustment mechanism 9's left side front end, and with heater 2 and fan 4 electric connection, monitors indoor oxygen concentration through oxygen concentration monitor 10.
As a preferable scheme, further, the filtering mechanism 5 includes a sleeve 51, a limiting groove 52, an air filter 53, a spring 54, a ball 55, an upper cover 56, a locking groove 57, an air inlet 58, a filter screen 59, a limiting rod 510 and a handle 511, the sleeve 51 is detachably disposed at the top end of the housing 3, the top end of the sleeve 51 is circumferentially provided with the limiting groove 52, the air filter 53 is inserted into an inner cavity of the sleeve 51, the air filter 53 filters outside air, the spring 54 is embedded in the inner wall groove of the sleeve 51 and corresponds to the position of the limiting groove 52, the spring 54 is a rotary spring, generates elastic deformation after being stretched or extruded, returns to an initial state after external force is removed, the spring 54 drives the ball 55 to move, the ball 55 is embedded in the inner wall groove of the sleeve 51, a part of the ball 55 extends out of the inner wall of the sleeve 51 under the action of the spring 54, and positions the upper cover through the cooperation of the ball 55 and the locking groove 57, upper cover 56 pegs graft in sleeve 51's inner chamber top, draw-in groove 57 has all been seted up to upper cover 56's outer wall bottom, and block ball 55 inserts and fixes a position upper cover 56 in the draw-in groove 57, inlet port 58 has all been seted up along circumference in the outer wall middle part of upper cover 56, filter screen 59 can dismantle the inner wall middle part that sets up in upper cover 56, can realize the primary of outside air through filter screen 59, gag lever post 510 quantity is three, set up in upper cover 56's bottom along circumference, and it is spacing to upper cover 56 to embed in spacing groove 52's inner chamber, it is spacing to upper cover 56 to utilize gag lever post 510 and spacing groove 52's cooperation, handle 511 fixed connection is on upper cover 56's top.
Preferably, the number of the limiting grooves 52 is three, and the three limiting grooves 52 are distributed at intervals of 120 degrees clockwise at the top end of the sleeve 51, so that the upper cover 56 can be limited from three directions, and the stability between the upper cover 56 and the sleeve 51 is further improved.
Preferably, the maximum length of the ball 55 extending beyond the inner wall of the sleeve 51 under the action of the spring 54 is less than its radius, so that the ball 55 is controlled by the sleeve 51, and when the cap 56 is inserted into the sleeve 51, the outer wall of the cap 56 presses the ball 55 to move inward freely.
Preferably, the bottom end of the limiting rod 510 is conical to facilitate the insertion of the limiting rod 510 into the limiting groove 52.
As a preferable scheme, further, the wind direction adjusting mechanism 9 includes a base 91, blades 92, gears 93, a mounting shell 94, sliding rods 95, a slider 96, a sliding chute 97, a motor 98, a shift lever 98, a cam 99, a shift lever 910 and a rack 911, the base 91 is detachably disposed at the left side of the housing 8, the front end of the left side of the base 91 is detachably connected with the right side of the oxygen concentration monitor 10, the number of the blades 92 is several, one end of each of the several blades 92 is rotatably connected to the front side of the inner cavity of the base 91 through a pin shaft from top to bottom, the discharge direction of the hot air is changed by the swinging of the blades 92, the diffusion range is expanded, the gears 93 are fixedly connected to the other ends of the blades 92, the gears 93 are rotatably connected with the rear side of the inner cavity of the base 91 through pin shafts, every two adjacent gears 93 are engaged and connected, the mounting shell 94 is fixedly connected to the rear side of the top end of the base 91, the number of the sliding rods 95 is two, and set up both ends about the inner chamber of installation shell 94 respectively along controlling the direction, it is spacing to slider 96 through slide bar 95, ensure that slider 96 can control horizontal migration, slider 96 can the horizontal slip cup joint in slide bar 95's outer wall, slider 96 front side middle part is from last to having seted up spout 97 down, motor 98 screw connection is in the rear side of installation shell 94, and with oxygen concentration monitor 10 electric connection, cam 99 can be dismantled and set up in the output of motor 98, driving lever 910 can be dismantled and set up in the front side bottom of cam 99, and embedded in the inner chamber of spout 97, rack 911 can be dismantled and set up in the bottom of slider 96, and be connected with the gear 93 meshing that is located the top.
Preferably, the length of the sliding slot 97 is larger than the diameter of the driving rod 910 driven by the motor 98 to make a circular motion, so that the driving rod 910 can freely slide in the sliding slot 97 when the driving rod 910 makes a circular motion.
The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.
When the air purifier is used, the box body 1 is fixed on an outer wall of a building through a hanging rack, the base 91 is locked at a window or a vent, the base 91 enters a room, the oxygen concentration monitor 10 monitors the oxygen concentration in the room, when the oxygen concentration is lower than a standard value, the oxygen concentration monitor 10 controls the heater 2, the fan 4 and the motor 98 to be started, the fan 4 enables air to move from top to bottom, outside air enters from the air inlet 58, the filter screen 59 primarily filters the air, the air is thoroughly purified through the air filter element 53, the purified air enters the box body 1, the heater 2 changes the air into hot air through the heat generated by the heater 2, the hot air is discharged into the base 91 through the pipeline 7 and then is discharged into the room, meanwhile, the motor 98 drives the deflector rod 910 to do circular motion, the deflector rod 910 can slide up and down in the chute 97, under the limiting action of the slide rod 95, the deflector rod 910 can drive the slide block 96 to reciprocate left and right, the rack 911 on the sliding block 96 stirs the gear 93 at the top end to rotate back and forth clockwise, so that the gears 93 rotate simultaneously, thereby realizing the swing of the blade 92, changing the discharge direction of the hot air under the blockage of the blade 92, expanding the diffusion range of the hot air, supplying oxygen for people, when the air filter element 53 needs to be replaced, lifting the handle 511 to promote the upper cover 56 and the limiting rod 510 to move upwards, moving the clamping ball 55 inwards and extruding the spring 54 under the blockage of the clamping groove 57, taking down the upper cover 56 to replace the core of the air filter element 53, then replacing the upper cover 56 on the sleeve 51 to ensure that the limiting rod 510 is inserted aiming at the limiting groove 52, the spring 54 enables the clamping ball 55 to enter the clamping groove 57 under the self elastic force, realizing the fixation of the upper cover 56 and completing the replacement of the air filter element 53, therefore, when in use, the air filter from the outside, and ensure the respiratory tract health of people, and the air diffusion range is large, the oxygen supply effect is strong, and the popularization is facilitated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a building intelligent environmental protection oxygen supply equipment which characterized in that includes:
a box body (1);
the heater (2) is detachably arranged on the right side of the inner cavity of the box body (1);
the shell (3) is detachably arranged at an opening at the top end of the box body (1);
the fan (4) is connected to the bottom end of the inner cavity of the shell (3) through screws;
the filtering mechanism (5) is detachably arranged at the top end of the shell (3);
the check valve (6) is connected to the left opening of the box body (1) through screws;
a pipeline (7) with one end detachably arranged at the left side of the check valve (6);
the outer cover (8) is detachably arranged at the other end of the pipeline (7);
the wind direction adjusting mechanism (9) is detachably arranged on the left side of the outer cover (8);
the oxygen concentration monitor (10) is detachably arranged at the front end of the left side of the wind direction adjusting mechanism (9) and is electrically connected with the heater (2) and the fan (4);
the filter mechanism (5) comprises:
the sleeve (51) is detachably arranged at the top end of the shell (3), and limiting grooves (52) are formed in the top end of the sleeve (51) along the circumferential direction;
the air filter element (53) is inserted into the inner cavity of the sleeve (51);
the spring (54) is embedded in the groove on the inner wall of the sleeve (51) and corresponds to the position of the limiting groove (52);
the clamping ball (55) is embedded in the groove on the inner wall of the sleeve (51), and a part of the clamping ball (55) extends out of the inner wall of the sleeve (51) under the action of the spring (54);
the upper cover (56) is inserted at the top end of the inner cavity of the sleeve (51), clamping grooves (57) are formed in the bottom end of the outer wall of the upper cover (56), clamping balls (55) are inserted into the clamping grooves (57) to position the upper cover (56), and air inlets (58) are formed in the middle of the outer wall of the upper cover (56) along the circumferential direction;
the filter screen (59) is detachably arranged in the middle of the inner wall of the upper cover (56);
the three limiting rods (510) are circumferentially arranged at the bottom end of the upper cover (56), and are embedded in the inner cavity of the limiting groove (52) to limit the upper cover (56);
a handle (511) fixedly connected to the top end of the upper cover (56);
the wind direction adjusting mechanism 9 comprises a base (91), blades (92), gears (93), a mounting shell (94), a sliding rod (95), a sliding block (96), a sliding groove (97), a motor (98), a cam (99), a shifting rod (910) and a rack (911), wherein the base (91) is detachably arranged on the left side of the outer cover (8), the front end of the left side of the base (91) is detachably connected with the right side of the oxygen concentration monitor (10), the blades (92) are provided with a plurality of blades, one ends of the blades (92) are rotatably connected with the front side of an inner cavity of the base (91) through pin shafts from top to bottom, the gears (93) are fixedly connected with the other ends of the blades (92), the gears (93) are rotatably connected with the rear side of the inner cavity of the base (91) through pin shafts, every two adjacent gears (93) are connected in a meshing manner, the mounting shell (94) is fixedly connected with the rear side of the top end of the base (91), slide bar (95) quantity is two, and set up both ends about the inner chamber of installation shell (94) respectively along left right direction, but slider (96) horizontal slip cup joint in the outer wall of slide bar (95), slider (96) front side middle part has been from last to having seted up spout (97) down, motor (98) screw connection is in the rear side of installation shell (94), and with oxygen concentration monitor (10) electric connection, cam (99) can be dismantled and set up in the output of motor (98), driving lever (910) can be dismantled and set up in the front side bottom of cam (99), and embedded in the inner chamber of spout (97), rack (911) can be dismantled and set up in the bottom of slider (96), and be connected with gear (93) meshing that are located the top.
2. The intelligent environment-friendly oxygen supply equipment for buildings according to claim 1, characterized in that: the number of the limiting grooves (52) is three, and the three limiting grooves (52) are distributed at the top end of the sleeve (51) at intervals of 120 degrees clockwise.
3. The intelligent environment-friendly oxygen supply equipment for buildings according to claim 1, characterized in that: the maximum length of the clamping ball (55) extending out of the inner wall of the sleeve (51) under the action of the spring (54) is smaller than the radius of the clamping ball.
4. The intelligent environment-friendly oxygen supply equipment for buildings according to claim 1, characterized in that: the bottom end of the limiting rod (510) is conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093501.0A CN112303797B (en) | 2020-10-14 | 2020-10-14 | Intelligent environmental protection oxygen supply equipment of building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093501.0A CN112303797B (en) | 2020-10-14 | 2020-10-14 | Intelligent environmental protection oxygen supply equipment of building |
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| Publication Number | Publication Date |
|---|---|
| CN112303797A CN112303797A (en) | 2021-02-02 |
| CN112303797B true CN112303797B (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011093501.0A Active CN112303797B (en) | 2020-10-14 | 2020-10-14 | Intelligent environmental protection oxygen supply equipment of building |
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| CN (1) | CN112303797B (en) |
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| CN207852439U (en) * | 2018-02-21 | 2018-09-11 | 桃江凤冠电机有限公司 | A kind of radiator structure of high frequency transformer |
| CN209877214U (en) * | 2019-03-06 | 2019-12-31 | 天津宏铭伟业科技有限公司 | Novel medical instrument operation air purification device |
| CN110805974A (en) * | 2019-11-04 | 2020-02-18 | 朱才武 | Conveniently change for kitchen use air purification device of filter core |
| CN210379837U (en) * | 2019-09-15 | 2020-04-21 | 陆海军 | Dust removal equipment for electromechanical device |
| CN111089357A (en) * | 2019-12-20 | 2020-05-01 | 杭州宽福科技有限公司 | Electronic air purifying device |
| CN210964173U (en) * | 2019-09-05 | 2020-07-10 | 四川苏净机电设备有限公司 | Installation device for filter element of filter |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000017544A (en) * | 1998-08-27 | 2000-03-25 | 다까다 요시유끼 | Exhaust cleaning apparatus for clean room |
| CN1467442A (en) * | 2002-07-06 | 2004-01-14 | 三星电子株式会社 | Fresh air ducts including downstream filters for clean rooms |
| CN105737359A (en) * | 2016-02-26 | 2016-07-06 | 上海电机学院 | Household automatic air purification system |
| CN108057845A (en) * | 2017-12-12 | 2018-05-22 | 重庆乐迪机车车辆配件有限公司 | A kind of novel heat insulation exothermic riser |
| CN207852439U (en) * | 2018-02-21 | 2018-09-11 | 桃江凤冠电机有限公司 | A kind of radiator structure of high frequency transformer |
| CN209877214U (en) * | 2019-03-06 | 2019-12-31 | 天津宏铭伟业科技有限公司 | Novel medical instrument operation air purification device |
| CN210964173U (en) * | 2019-09-05 | 2020-07-10 | 四川苏净机电设备有限公司 | Installation device for filter element of filter |
| CN210379837U (en) * | 2019-09-15 | 2020-04-21 | 陆海军 | Dust removal equipment for electromechanical device |
| CN110805974A (en) * | 2019-11-04 | 2020-02-18 | 朱才武 | Conveniently change for kitchen use air purification device of filter core |
| CN111089357A (en) * | 2019-12-20 | 2020-05-01 | 杭州宽福科技有限公司 | Electronic air purifying device |
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| CN112303797A (en) | 2021-02-02 |
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Effective date of registration: 20211115 Address after: 518000 702, Tongjian building, Bantian group, No. 20, lishipi lane, dafapu community, Bantian street, Longgang District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Gaogao Logo Design Co., Ltd Address before: 065900 Room 202, unit 3, South Building, Xinhua East Street County hospital dormitory building, Pingshu Town, Dacheng County, Langfang City, Hebei Province Applicant before: Liu Qinghong |
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