CN203823990U - Ventilation device of household fresh air system - Google Patents
Ventilation device of household fresh air system Download PDFInfo
- Publication number
- CN203823990U CN203823990U CN201420148030.2U CN201420148030U CN203823990U CN 203823990 U CN203823990 U CN 203823990U CN 201420148030 U CN201420148030 U CN 201420148030U CN 203823990 U CN203823990 U CN 203823990U
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- sleeve pipe
- wall
- fresh air
- air system
- ventilation unit
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Abstract
The utility model discloses a ventilation device of a household fresh air system and belongs to the technical field of indoor ventilation. The ventilation device comprises a control panel, a casing pipe, a fan fixing frame, a heating element, an air filtering assembly, a rainproof louver, a silencing sponge ring and an axial flow fan, wherein the fan fixing frame, the heating element, the air filtering assembly and the rainproof louver which is arranged at the outdoor end of the casing pipe are sequentially installed in the casing pipe from the indoor end to the outdoor end; the silencing sponge ring and the axial flow fan are installed in the fan fixing frame, an outer wall sealing ring is arranged at the outer wall end of the casing pipe, an inner wall fixing plate is arranged at the inner wall end of the casing pipe, the outer wall sealing ring is installed at an outer cornice of the outer wall end of the casing pipe, the inner wall fixing plate is installed at an outer cornice of the inner wall end of the casing pipe, and the control panel is movably connected with the indoor end of the fan fixing frame. According to the ventilation device, the fan, the silencing element, the filtering element, the heating element and the like are integrated in the casing pipe, and each unit adopts the modular design, so that the effect that the filtering element is convenient to replace and equipment is convenient to maintain is realized, and reliable and efficient work of all the elements are guaranteed at any time.
Description
Technical field
The utility model belongs to room ventilation technical field, relates to a kind of Household fresh air system of wall-mounted type, specifically relates to a kind of Household fresh air system ventilation unit.
Background technology
VMC adopts mechanical forced ventilation mode exactly, constantly replace room air with outdoor clean fresh air, guarantee room air cleaning, fresh, have enough oxygen, can drive away bad smell, the airborne suspended particulate of filtering, to ensure high-quality pure air.Can prevent in building mouldyly simultaneously, extend building service life, and there is high reliability, low energy consumption, low noise, meet code of building energy efficiency standard.
Force ventilation mode of the prior art mainly contains unidirectional flow ventilation, bidirectional flow ventilates and recuperation of heat is ventilated.Unidirectional flow ventilation is made up of a multi-point self-balancing exhaust blower, a set of air exhaust tube system and one group of wall-mounted type air inlet, by exhaust blower to outdoor air draft, make indoor formation air negative pressure, allow outdoor air automatically flow into indoor, reach the object of displacement room air, as disclosed in the application number Chinese utility model patent that is 201220664492.0 a kind of can with the way flow VMC of air-conditioning interlock; The blower fan of two platform independent work for the elegance that two-way circulates, a forced air supply, another forces air draft, and by sending, air exhaust tube system, displacement room air, as the application number new blower fan of the disclosed one of Chinese invention patent that is 201110101566.X; Recuperation of heat ventilate by a total-heat exchanger and a set ofly give, exhaust system forms, total-heat exchanger is interior with two Fans, respectively to indoor forced air supply and air draft, in supply and exhaust, carry out heat exchange, make wind pushing temperature approach former indoor temperature, reach indoor wind and the energy-conservation effect of changing, as the above-mentioned application number new blower fan of the disclosed one of Chinese invention patent that is 201110101566.X.
But also there are some defects in the new blower fan of above-mentioned various mechanical types in the time of application:
The one, house force ventilation product great majority are in the market equipment and design concepts of introducing the developed countries such as Europe, and the formation of these products and system, be the prerequisite design of getting off relatively preferably of external environment air quality based on these developed countries, its air intake filters and mostly is employing " roughing efficiency air filter ".And the current many urban environment air pollutions of China are serious, with being subject to the outdoor air polluting directly to replace room air, effect is run counter to desire.
The 2nd, existing mechanical ventilation system all need to be arranged a set of pipe-line system at indoor location, this makes use of momentum must be at the indoor furred ceiling finishing that carries out, site operation quantities is larger, in addition, these systems are installed during generally just for new finishing house, and to accounting for most complete houses of fitting up, rethink and use these systems just very difficult.
The 3rd, Fan Equipment and pipe-line system are all hidden in furred ceiling layer, very inconvenient to the cleaning-sterilizing of equipment pipeline, the pipe-line system of particularly blowing, and laying dust is difficult to clean for a long time, will cause secondary pollution to room air.
The 4th, the market price of equipment is higher, becomes these device systems and be difficult to obtain one of universal major reason on market.
Utility model content
In order to address the above problem, the utility model provides a kind of Household fresh air system ventilation unit, thereby reaches good clean ventilation effect.
The utility model is achieved by following technical solution.
A kind of Household fresh air system ventilation unit, comprise control panel, sleeve pipe, be arranged on successively the fan fixed mount in sleeve pipe by indoor end to outdoor end, heating element heater, air filtering assembly and the stormproof louvre that is arranged on the outdoor end of sleeve pipe, and be arranged on noise reduction sponge ring and the axial flow blower in fan fixed mount, the exterior wall end of described sleeve pipe is provided with exterior wall sealing ring, sleeve pipe inner end wall is provided with interior wall fixed head, described exterior wall sealing ring is arranged on the outer cornice of sleeve pipe exterior wall end place, described interior wall fixed head is arranged on the outer cornice of sleeve pipe inner end wall place, described control panel is flexibly connected with the indoor end of fan fixed mount.
On the barrel of described fan fixed mount inner end wall, evenly have air outlet, air outlet is exposed at outside the indoor end end face of sleeve pipe; Described interior wall fixed head edge is processed with the wind-guiding face of inclination.
Described axial flow blower is direct current axial flow blower; Between the inwall of described fan fixed mount outer wall and heating element heater outer wall and sleeve pipe, be provided with O RunddichtringO.
Described exterior wall sealing ring adopts silastic material to make; The filter element of described air filtering assembly adopts nonwoven or active carbon fibre fiber products closed assembly to make; Described sleeve pipe is the plastic products of external diameter 120mm; Described noise reduction sponge ring is close sponge making in adopting.
A kind of Household fresh air system ventilation unit described in the utility model, adopt 12V direct current axial flow blower as its dynamical element that ventilates, outdoor air enters air filtration element through exterior wall stormproof louvre, by the air after medium air filtration, can effectively dispose the airborne suspended particle such as dust, pollen contained in outdoor air, make to send into indoor air and reach clean air quality.
The beneficial effects of the utility model are:
1, a kind of Household fresh air system ventilation unit described in the utility model, by blower fan, silencer element, filter element, heating element heater etc. are integrated in sleeve pipe, and modularized design is taked in each unit, to reach the effect that maintains easily maintenance and renewal part, reliable, efficient to ensure at any time each element; And can adopt different filter elements to meet different air cleaning needs.
2, by the air outlet of indoor end is designed to the wind-guiding face that also passes through interior wall fixed supported slab edge on the barrel of fan fixed mount by direction in wind direction guide chamber, in outdoor end design exterior wall seal ring structure and stormproof louvre structure, make the air port on interior wall face smaller and more exquisite attractive in appearance simultaneously.
3, in the technical program, each element is mainly plastic products, except control panel need ensure attractive in appearance, all the other plastic components can also adopt regenerated plastics make, low production cost; And install and use simple and fast, and being subject to hardly the impact of the factors such as finishing, furred ceiling, the quantity of one family configuration ventilation unit also can design according to s own situation, and applicable surface is wider, is more beneficial to penetration and promotion.
4, the technical program does not take indoor and outdoor spaces, and each room can independently be installed, independent clean air-supply, and directed variable air rate continues to ventilate, without air-supply secondary pollution.
5, customer using cost is cheap, and the power consumption of a ventilation unit is approximately 5W left and right, low-carbon environment-friendly.
Brief description of the drawings
Fig. 1 is scheme of installation of the present utility model;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is that the front of control panel in the utility model shows schematic diagram;
Fig. 4 is the structural representation of interior wall fixed head in the utility model;
Fig. 5 is the cutaway view of interior wall fixed head in the utility model;
Fig. 6 is the structural representation of fan fixed mount in the utility model;
Fig. 7 is the structural representation of air filtering assembly in the utility model.
In figure: 1-control panel, 101-air quantity indicator lamp, the dirty stifled alarm lamp of 102-filter, 103-infrared receiver window, 2-interior wall fixed head, 201-wind-guiding face, 202-supply hub, 3-noise reduction sponge ring, 4-fan fixed mount, 401-air outlet, 5-axial flow blower, 6-heating element heater, 7-air filtering assembly, 701-filter retainer ring, 702-air filtering core, 8-exterior wall sealing ring, 9-stormproof louvre, 10-sleeve pipe, 11-O RunddichtringO, 12-body of wall.
Detailed description of the invention
Further describe the technical solution of the utility model below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
If Fig. 1 is to as shown in Fig. 7, a kind of Household fresh air system ventilation unit described in the utility model, comprise control panel 1, sleeve pipe 10, be arranged on successively the fan fixed mount 4 in sleeve pipe 10 by indoor end to outdoor end, heating element heater 6, air filtering assembly 7 and the stormproof louvre 9 that is arranged on sleeve pipe 10 outdoor ends, and be arranged on noise reduction sponge ring 3 and the axial flow blower 5 in fan fixed mount 4, the exterior wall end of described sleeve pipe 10 is provided with exterior wall sealing ring 8, sleeve pipe 10 inner end walls are provided with interior wall fixed head 2, described exterior wall sealing ring 8 is arranged on the outer cornice of sleeve pipe 10 exterior wall ends place, described interior wall fixed head 2 is arranged on the outer cornice of sleeve pipe 10 inner end walls place, described control panel 1 is flexibly connected with the indoor end of fan fixed mount 4.
Described control panel 1 is hollow injection-moulded component, be fixedly connected with fan fixed mount 4 inner end walls, control circuit board is installed in abdominal cavity, be used for controlling rotation speed of fan, detect the dirty stifled and warning of air filtration element, intelligent air quantity control etc., there are air quantity indicator lamp 101, the dirty gambling alarm lamp 102 of filter, infrared receiver window 103 in surface, carries out air quantity control by remote control mode.
Sleeve pipe 10 is extrudate, and external diameter 120mm, is about 300mm, and can carry out cutting according to the actual (real) thickness of installed body of wall 12.
Interior wall fixed supported slab 2 is bonding with the outer eaves of sleeve pipe 10 inner end walls, and is fixed on interior wall, and edge is processed with the wind-guiding face 201 of inclination, and 201 designs of wind-guiding face can will be directed to indoor direction from air outlet 401 pure air out; Interior wall fixed supported slab 2 lower limbs are established supply hub 202, supply hub 202 is connected with the DC power source adapter of 12V, and by the conductive insert of interior wall fixed supported slab 2, power supply and control signal are passed to blower fan, power supply adaptor directly connects 220V household electricity, wall dress switch need not be installed, and energy-saving safe.Generally when equipment is installed on exterior wall adopt the blower fan that power is 5W, and equipment no longer needs to configure air filtering assembly 7 while being installed on interior wall, only needs to adopt the blower fan that power is 1W can meet ventilation needs.
Fan fixed mount 4 is injection-molded item, be connected by screw with control panel 1, for fixed axis flow fan 5 and installation noise reduction sponge ring 3 etc., described axial flow blower 5 is direct current axial flow blower, as the power source ventilating, and can realize stepless time adjustment, throughout the year, night on daytime, the requirement difference of house to ventilation, direct current axial flow blower can be realized from 0 to 60m3/h air-supply and changing, and can meet better the different demands under different situations; During described noise reduction sponge ring 3 adopts, close sponge is made, and plays the effect that reduces noise; On the barrel of fan fixed mount 4 indoor ends, have circumferential equally distributed air outlet 401, and install time air outlet 401 be exposed at outside the indoor end end face of sleeve pipe 10.
Described heating element heater 6 is PTC heater, and temperature control point is 70 DEG C, installs heating element heater 6 while generally use in north cold area additional, and warmer area, south does not need to configure heating element heater 6.
Between the inwall of described fan fixed mount 4 outer walls and heating element heater 6 outer walls and sleeve pipe 10, be provided with O RunddichtringO 11, O RunddichtringO 11 is rubber, by fan fixed mount 4 outer walls and heating element heater 6 outer walls all with sleeve pipe 10 inner wall sealings, and can relative sliding.
Described air filtering assembly 7 comprises filter retainer ring 701 and air filtering core 702, described filter retainer ring 701 is injection-molded item, large end is threaded connection with stormproof louvre 9, small end fixed air filter core 702, described air filtering core 702 is that nonwoven or active carbon fibre fiber products closed assembly are made, can effectively filter PM2.5 and above airborne suspended particle, it is above that the folding air filtering core 702 forming can make filter area double, not only reduce to filter windage, and strengthened the dirty ability of appearance of air filtering core 702.For ensureing airfiltering effect, air filtering core 702 is the low value running stores that need to regularly change.Change filter element very simple, only need hold control panel 1 from indoor end, whole fan fixed mount 4 and heating element heater 6 are pulled out successively, then air filtering assembly 7 is backed out to taking-up from stormproof louvre 9, be i.e. replaceable new air filtering core 702.
Exterior wall sealing ring 8 is silastic product, and there is the structure of falling eaves at edge, and the opening of falling eaves is towards indoor direction; Exterior wall sealing ring 8 is bonded in the outer cornice of the outdoor end of sleeve pipe 10, when sleeve pipe 10 is pushed laterally by wall inner side, while making the outdoor end end face of sleeve pipe 10 exceed the about 10mm of wall face, exterior wall sealing ring 8 relies on the elastic force of himself material and structure by the gap sealing between sleeve pipe 10 outer walls and circular porthole inwall, has reached and has sealed rainproof effect; Stormproof louvre 9 is injecting products, is arranged on the outdoor end of sleeve pipe 10, reaches and prevents that rainwater from entering the effect in sleeve pipe 10.The two combination, makes installing when ventilation unit, not be used in and on exterior wall, installs rain cover additional again, and simple in structure not affect again exterior wall attractive in appearance.
The technical program adopts modularized design, and each function element adopts standard interface, can convert as required different combinations.In the technical program, axial flow blower 5, heating element heater 6 and air filtering core 702 etc. all can directly be bought standard component on market, and all the other each elements can be entrusted the processing customized of each professional production producer, and workman only need assemble.
The utility model adopts sleeve pipe to bury wall mounting means, apart from ground 0.3～1.6m, water is drilled in and on body of wall 12, bores the through hole that a diameter is 50～135mm, ventilation unit is inserted to through hole and can realize installation, according to many rooms housing layout, can be by multiple these ventilation units being set and coordinating original air exhausting device to form ventilating system.
As the house in a San Shiliang Room, family, in parlor, the external wall in two bedrooms and study installs respectively a playscript with stage directions ventilation unit, pure air these clean room of first flowing through, by the effect of positive pressure gas air supply stream, air to toilet, room that air in kitchen is relatively dirty flows, and window by kitchen and toilet or exhaust fan are by outside foul atmosphere discharge chamber.
The and for example house in a San Shiliang Room, family, wall between wall, parlor and study between exterior wall, parlor and the bedroom in parlor is installed respectively a playscript with stage directions ventilation unit, pure air these clean room of first flowing through, by the effect of positive pressure gas air supply stream, air to toilet, room that air in kitchen is relatively dirty flows, and window by kitchen and toilet or exhaust fan are by outside foul atmosphere discharge chamber.
Claims (9)
1. a Household fresh air system ventilation unit, comprise control panel (1), sleeve pipe (10), be arranged on successively the fan fixed mount (4) in sleeve pipe (10) by indoor end to outdoor end, heating element heater (6), air filtering assembly (7) and be arranged on the stormproof louvre (9) of the outdoor end of sleeve pipe (10), and be arranged on noise reduction sponge ring (3) and the axial flow blower (5) in fan fixed mount (4), it is characterized in that: the exterior wall end of described sleeve pipe (10) is provided with exterior wall sealing ring (8), sleeve pipe (10) inner end wall is provided with interior wall fixed head (2), described exterior wall sealing ring (8) is arranged on the outer cornice of sleeve pipe (10) exterior wall end place, described interior wall fixed head (2) is arranged on the outer cornice of sleeve pipe (10) inner end wall place, described control panel (1) is flexibly connected with the indoor end of fan fixed mount (4).
2. a kind of Household fresh air system ventilation unit according to claim 1, is characterized in that: on the barrel of described fan fixed mount 4 inner end walls, evenly have air outlet (401), air outlet (401) is exposed at outside the indoor end end face of sleeve pipe (10).
3. a kind of Household fresh air system ventilation unit according to claim 1, is characterized in that: described interior wall fixed head (2) edge is processed with the wind-guiding face (201) of inclination.
4. a kind of Household fresh air system ventilation unit according to claim 1, is characterized in that: described axial flow blower (5) is direct current axial flow blower.
5. a kind of Household fresh air system ventilation unit according to claim 1, is characterized in that: between the inwall of described fan fixed mount (4) outer wall and heating element heater (6) outer wall and sleeve pipe (10), be provided with O RunddichtringO (11).
6. a kind of Household fresh air system ventilation unit according to claim 1, is characterized in that: described exterior wall sealing ring (8) adopts silastic material to make.
7. a kind of Household fresh air system ventilation unit according to claim 1, is characterized in that: the filter element of described air filtering assembly (7) adopts nonwoven or active carbon fibre fiber products closed assembly to make.
8. a kind of Household fresh air system ventilation unit according to claim 1, is characterized in that: the plastic products that described sleeve pipe (10) is external diameter 120mm.
9. a kind of Household fresh air system ventilation unit according to claim 1, is characterized in that: described noise reduction sponge ring (3) is close sponge making in adopting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420148030.2U CN203823990U (en) | 2014-03-28 | 2014-03-28 | Ventilation device of household fresh air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420148030.2U CN203823990U (en) | 2014-03-28 | 2014-03-28 | Ventilation device of household fresh air system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203823990U true CN203823990U (en) | 2014-09-10 |
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ID=51479478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420148030.2U Expired - Fee Related CN203823990U (en) | 2014-03-28 | 2014-03-28 | Ventilation device of household fresh air system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203823990U (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633780A (en) * | 2014-12-31 | 2015-05-20 | 森德(中国)暖通设备有限公司 | Indoor air processing system |
| CN105157151A (en) * | 2015-08-22 | 2015-12-16 | 宁波东大空调设备有限公司 | Efficient wall-penetrating-type fresh air purifying device |
| CN105737314A (en) * | 2016-02-29 | 2016-07-06 | 青岛海尔空调器有限总公司 | Fresh air exchange device and air conditioner |
| CN106051998A (en) * | 2016-06-02 | 2016-10-26 | 青岛海尔空调器有限总公司 | Fresh air conditioner |
| CN106322644A (en) * | 2015-06-12 | 2017-01-11 | 廖真荣 | Intelligent fresh air system for improving indoor air environment |
| CN106765825A (en) * | 2017-01-20 | 2017-05-31 | 杭州麦芽糖科技有限公司 | A kind of embedded new blower fan |
| CN107062507A (en) * | 2017-04-10 | 2017-08-18 | 陈罡 | A kind of wall hole formula Jing Yin new blower fan and its core component using a variety of sound-silencing measures |
| CN107131603A (en) * | 2017-07-12 | 2017-09-05 | 坦普尔（厦门）环保科技有限公司 | The electronic anti-haze device of wall |
| CN107449095A (en) * | 2017-09-19 | 2017-12-08 | 陈罡 | A kind of air-flow leads directly to wall-mounted new blower fan |
| CN107461819A (en) * | 2017-09-19 | 2017-12-12 | 陈罡 | A kind of external wall-mounted new blower fan |
| CN107631396A (en) * | 2017-11-08 | 2018-01-26 | 成都喻抒电气有限责任公司 | A kind of Wind Volume, low noise, resilient wall-mounted blower fan and installation method |
| CN109425064A (en) * | 2017-08-25 | 2019-03-05 | 长沙胜瑞汽车部件有限公司 | A kind of new blower |
| CN109520027A (en) * | 2018-10-23 | 2019-03-26 | 安徽宸智物联科技有限公司 | A kind of window load auxiliary heat purifying instrument of fresh air air |
| CN110160199A (en) * | 2018-02-14 | 2019-08-23 | 建准电机工业股份有限公司 | Air-flow switch |
| CN110160247A (en) * | 2018-02-14 | 2019-08-23 | 建准电机工业股份有限公司 | The guide duct of air-flow switch |
| CN114719374A (en) * | 2022-04-27 | 2022-07-08 | 深圳提达装饰工程有限公司 | Indoor energy-saving fresh air system |
| CN115751554A (en) * | 2021-09-01 | 2023-03-07 | 芜湖美的智能厨电制造有限公司 | Air supplement unit and kitchen air supplement system |
-
2014
- 2014-03-28 CN CN201420148030.2U patent/CN203823990U/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633780B (en) * | 2014-12-31 | 2017-10-13 | 森德(中国)暖通设备有限公司 | Room air processing system |
| CN104633780A (en) * | 2014-12-31 | 2015-05-20 | 森德(中国)暖通设备有限公司 | Indoor air processing system |
| CN106322644A (en) * | 2015-06-12 | 2017-01-11 | 廖真荣 | Intelligent fresh air system for improving indoor air environment |
| CN105157151A (en) * | 2015-08-22 | 2015-12-16 | 宁波东大空调设备有限公司 | Efficient wall-penetrating-type fresh air purifying device |
| CN105157151B (en) * | 2015-08-22 | 2017-11-24 | 宁波东大空调设备有限公司 | A kind of efficiently wall-penetrating type fresh air air cleaning unit |
| CN105737314A (en) * | 2016-02-29 | 2016-07-06 | 青岛海尔空调器有限总公司 | Fresh air exchange device and air conditioner |
| CN106051998A (en) * | 2016-06-02 | 2016-10-26 | 青岛海尔空调器有限总公司 | Fresh air conditioner |
| CN106051998B (en) * | 2016-06-02 | 2020-02-04 | 青岛海尔空调器有限总公司 | Fresh air conditioner |
| CN106765825A (en) * | 2017-01-20 | 2017-05-31 | 杭州麦芽糖科技有限公司 | A kind of embedded new blower fan |
| CN107062507A (en) * | 2017-04-10 | 2017-08-18 | 陈罡 | A kind of wall hole formula Jing Yin new blower fan and its core component using a variety of sound-silencing measures |
| CN107131603A (en) * | 2017-07-12 | 2017-09-05 | 坦普尔（厦门）环保科技有限公司 | The electronic anti-haze device of wall |
| CN109425064A (en) * | 2017-08-25 | 2019-03-05 | 长沙胜瑞汽车部件有限公司 | A kind of new blower |
| CN107449095A (en) * | 2017-09-19 | 2017-12-08 | 陈罡 | A kind of air-flow leads directly to wall-mounted new blower fan |
| CN107461819A (en) * | 2017-09-19 | 2017-12-12 | 陈罡 | A kind of external wall-mounted new blower fan |
| CN107631396A (en) * | 2017-11-08 | 2018-01-26 | 成都喻抒电气有限责任公司 | A kind of Wind Volume, low noise, resilient wall-mounted blower fan and installation method |
| CN110160199A (en) * | 2018-02-14 | 2019-08-23 | 建准电机工业股份有限公司 | Air-flow switch |
| CN110160247A (en) * | 2018-02-14 | 2019-08-23 | 建准电机工业股份有限公司 | The guide duct of air-flow switch |
| CN110160247B (en) * | 2018-02-14 | 2021-09-17 | 建准电机工业股份有限公司 | Air guide pipe of airflow exchange device |
| CN109520027A (en) * | 2018-10-23 | 2019-03-26 | 安徽宸智物联科技有限公司 | A kind of window load auxiliary heat purifying instrument of fresh air air |
| CN115751554A (en) * | 2021-09-01 | 2023-03-07 | 芜湖美的智能厨电制造有限公司 | Air supplement unit and kitchen air supplement system |
| CN114719374A (en) * | 2022-04-27 | 2022-07-08 | 深圳提达装饰工程有限公司 | Indoor energy-saving fresh air system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 |
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| CF01 | Termination of patent right due to non-payment of annual fee |