CN108006880A - A kind of household kitchen air-makeup system and application have the benefit wind method of the system - Google Patents
A kind of household kitchen air-makeup system and application have the benefit wind method of the system Download PDFInfo
- Publication number
- CN108006880A CN108006880A CN201710467030.7A CN201710467030A CN108006880A CN 108006880 A CN108006880 A CN 108006880A CN 201710467030 A CN201710467030 A CN 201710467030A CN 108006880 A CN108006880 A CN 108006880A
- Authority
- CN
- China
- Prior art keywords
- air
- kitchen
- wind
- chamber
- section
- 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.)
- Granted
Links
- 230000008901 benefit Effects 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 239000006185 dispersion Substances 0.000 claims abstract description 5
- 238000007493 shaping process Methods 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000010411 cooking Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
-
- 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
-
- 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
- F24F2007/0025—Ventilation using vent ports in a wall
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The present invention relates to a kind of benefit wind method that household kitchen air-makeup system and application have the system, air-makeup system includes secondary air channel and presses chamber, secondary air channel is connected with natural wind regime, chamber is pressed to be arranged in the superjacent air space of kitchen furred ceiling and close to the side wall arrangement away from range hood, pressure chamber is connected with secondary air channel, press the bottom of chamber to offer the first air outlet close to kitchen wall arrangement, be provided with the furred ceiling of kitchen and the corresponding air port excessively of the first air outlet.The configuration of the present invention is simple, rationally, by the air that secondary air channel enters by pressing chamber to be flowed after mixing along the wall surface away from kitchen ventilator side, airflow velocity is obviously reduced and progressively scatters to whole kitchen space after flowing a period of time, to carry out mending wind in time to kitchen, since air-flow with relatively low rate of dispersion enters kitchen, so that range hood lower zone maintains metastable flow field, avoid running the appearance of cigarette situation, so as to interference of the limited reduction to range hood, pump drainage effect is improved.
Description
Technical field
The present invention relates to a kind of benefit wind method that household kitchen air-makeup system and application have the system.
Background technology
As urban land day is becoming tight, newly-built residential area floor is higher and higher, is generally discharged fume using common duct.By
It is relatively good in the leakproofness of present window and door, user close the doors and windows in kitchen cooking when, often occur range hood row
There is the phenomenon substantially vacuumized afterwards for a period of time in cigarette, influences oil smoke suction effect, and easily causes door and window to shake, and if opened
Window cooking, the then wind for being directly entered kitchen easily disturb range hood to work, and cause to run cigarette.
The Chinese utility model patent of Application No. CN201620632334.5《A kind of Passive House kitchen discharged lampblack is certainly
Right air-makeup system》A kind of structure is disclosed, it includes nature and mends wind air hose, electrically operated valve I, adapter case and air grille；It is natural
Mend wind air hose to be installed on the exterior wall in kitchen, outside its one end open chamber, be connected in other end open chamber and with adapter case, adapter case
Cabinet skirt line position is arranged at, adapter case is equipped with air grille, mends naturally and is provided with electrically operated valve I on wind air hose, electronic
Valve I is turned on and off with the electrically operated valve II on oil fuel exhausting duct and mist extractor fan linkage.With prior art phase
Than, the beneficial effects of the invention are as follows：When mist extractor wind turbine is opened, electrically operated valve I and electrically operated valve II are also opened, mist extractor wind turbine
During closing, electrically operated valve I and electrically operated valve II are also switched off, and can mend the air-tightness of wind and Passive House naturally.Should
Structure arranges air grille ground proximity, mends wind effect although can play, easily gathering dust etc. at air grille is blocked
Plug, it is necessary to often cleaning could not influence to use, bring inconvenience for user.In Application No. CN201610971370.9
State's application for a patent for invention《Mend air control cigarette energy conserving system in a kind of residence building kitchen》A kind of structure is disclosed, its smokejack passes through row
Cigarette pipe connects with smoke exhaust；Smokejack, which is placed in, to be mended in air passage；Mend air passage by mend wind branch pipe and with oil-fume extractor motor string
The electrically operated valve of connection mends bellows with the spill being placed on hearth and connects；It is corresponding with the exhaust hood of smoke exhaust to mend bellows concave part,
Cooking stove is placed thereon；Mending bellows top has rectangular-ambulatory-plane air outlet.The air outlet for mending air passage is arranged on range hood by said structure
Lower opposite, outlet air easily interferes range hood, influences pump drainage effect.
Therefore, for current kitchen air-makeup system and benefit wind method, improved up for further.
The content of the invention
The technical problem to be solved by the invention for the present situation of prior art is to provide a kind of Coanda using air-flow
Effect mend the household kitchen air-makeup system of wind, which in time can mend kitchen wind and effectively reduce to range hood
Interference.
Another technical problem to be solved by this invention is the present situation for the prior art, there is provided one kind application has above-mentioned
The benefit wind method of kitchen air-makeup system, this method can mend wind to kitchen in time and effectively reduce the interference to range hood.
Technical solution is used by the present invention solves above-mentioned technical problem：A kind of household kitchen air-makeup system, including mend
Air hose, the first end of the secondary air channel are connected with natural wind regime, it is characterised in that：Further include and press chamber, this presses chamber to be arranged on kitchen
In the superjacent air space of room furred ceiling and close to the side wall arrangement away from range hood, it is described press chamber have with secondary air channel the
The first air inlet that two ends are connected, the bottom for pressing chamber offers the first air outlet close to kitchen wall arrangement, right
Answer, be provided with the kitchen furred ceiling and the corresponding air port excessively of the first air outlet.
As an improvement, air guide member is connected with below first air outlet, the air guide member inner hollow and section shaping
For right angle fan, assemble under completion status, the top planes of the air guide member abut the lower surface arrangement of kitchen furred ceiling and are provided with
Second air inlet, the side panels of the air guide member arrange that at least side of the air guide member arcwall face is opened against kitchen side wall
Equipped with the second air outlet arranged along its length.Above-mentioned air guide member is set, so that the wind energy into kitchen is slow close to wall
Flowing.
Improve again, the nozzle being covered on the second air outlet is provided with the air guide member, being provided with air feed on the nozzle leads to
The spout crossed, the spout include wind-guiding section, speedup section and the scattered section being mutually linked.The structure is set, and wind-guiding section is easy to distinguished and admirable
Conveying, since bore compared with I carries out airflow velocity certain acceleration, scattered section makes distinguished and admirable along wall to divide rapidly speedup section
Scatter, to weaken the unidirectional of air-flow.
Preferably, the bore of the wind-guiding section gradually tapers up backward from air intake, the bore self-consistentency of the speedup section,
The bore of the scattered section gradually expands from front to back.
Further improve, the two sides that the wind-guiding section is arranged along nozzle length direction are configured to the first arcwall face, institute
State the two sides that scattered section is arranged along nozzle length direction and be configured to the second arcwall face.Using such structure, easy to utilize
Two arcwall faces play guiding function to distinguished and admirable.
Preferably, the both sides of the air guide member arcwall face offer the second air outlet arranged along its length respectively.
Preferably, described press between chamber and secondary air channel is connected with booster fan.The booster fan is set, so that of the invention
Air-makeup system easily facilitate control.
A kind of application has the benefit wind method of above-mentioned household kitchen air-makeup system, it is characterised in that：When range hood is run, from
Right wind is entered by secondary air channel presses in chamber, and sequentially passed through air port, the first air outlet enters in kitchen along kitchen wall,
Wind into kitchen is slowly spread apart after docile metope flows a distance and slows down, and is diffused to relatively low rate of dispersion whole
A kitchen space.
Compared with prior art, the advantage of the invention is that：The configuration of the present invention is simple, reasonable, the top of furred ceiling in kitchen
The pressure chamber being connected with secondary air channel is provided with space, this presses the air outlet of chamber to be arranged close to kitchen wall, in use, through
The air of secondary air channel entrance is crossed by pressing chamber to be flowed after mixing along the wall surface away from kitchen ventilator side, flows one section
Airflow velocity is obviously reduced and progressively scatters to whole kitchen space after time, to carry out mending wind in time to kitchen, due to last
Air-flow enters kitchen with relatively low rate of dispersion, will not produce similar electric fan and that obvious blowing that opens a window is felt, make
Obtain range hood lower zone and maintain metastable flow field, avoid running the appearance of cigarette situation, so that limited reduction is to fume-exhausting
The interference of machine, improves pump drainage effect, reduces oxygen caused by burning due to kitchen range and reduces with temperature increase to human body comfort
Influence；Simultaneously as the system is installed on above furred ceiling, the kitchen space of preciousness will not be taken.
Brief description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention；
Fig. 2 is the structure diagram of another angle of the embodiment of the present invention；
Fig. 3 is the exploded view (hiding secondary air channel) of Fig. 2；
Fig. 4 is the structure diagram of air guide member in Fig. 3；
Fig. 5 is the structure diagram of another angles of Fig. 4；
Fig. 6 is the profile of nozzle in Fig. 3.
Embodiment
The present invention is described in further detail below in conjunction with attached drawing embodiment.
As shown in figs. 1 to 6, the household kitchen air-makeup system of the present embodiment includes secondary air channel 1 and presses chamber 2, the secondary air channel 1
First end be connected with natural wind regime, the second end of secondary air channel 1 is with pressing chamber 2 to be connected.Specifically, pressure chamber 2 is arranged on kitchen
In the superjacent air space of room furred ceiling 3 and close to the side wall arrangement away from range hood 4, press chamber 2 to have and be connected with secondary air channel 1
The first air inlet 21 connect, presses the bottom of chamber 2 to offer the first air outlet 22 close to kitchen wall arrangement, corresponding, kitchen
It is provided with room furred ceiling 3 and 22 corresponding air port 31 excessively of the first air outlet.
In the present embodiment, the lower section of the first air outlet 22 is connected with air guide member 5,5 inner hollow of air guide member and section
Right angle fan is configured to, is assembled under completion status, the top planes 51 of air guide member 5 abut the lower surface arrangement of kitchen furred ceiling 3, and
It is provided with the plane 51 with crossing corresponding second air inlet 511 in air port 31, the side panels 52 of air guide member 5 abut kitchen side wall
Arrangement, the both sides of 5 arcwall face 53 of air guide member offer the second air outlet 54 arranged along its length respectively.Set in air guide member 5
The nozzle 55 being covered on the second air outlet 54 is equipped with, the spout 50 that air feed passes through is provided with the nozzle 55, which includes
Wind-guiding section 551, speedup section 552 and the scattered section 553 being mutually linked.Wherein, the bore of wind-guiding section 551 is gradual backward from air intake
Shrink, and wind-guiding section 551 is configured to the first arcwall face 554, the mouth of speedup section 552 along the two sides that nozzle length direction is arranged
Footpath self-consistentency, the bore 553 for disperseing section gradually expands from front to back, and disperses section 553 is arranged along nozzle length direction two
Side is configured to the second arcwall face 555.Wind-guiding section 551 is easy to distinguished and admirable conveying, and speedup section 552 is due to bore compared with I to distinguished and admirable
Speed carries out certain acceleration, scattered section 553 make it is distinguished and admirable scatter rapidly along wall, to weaken the unidirectional of air-flow.
Booster fan 6 can also be connected with by pressing between chamber 2 and secondary air channel 1, so that the air-makeup system of the present embodiment is more
Easy to control.
It is natural when range hood is run using the benefit wind method for having above-mentioned household kitchen air-makeup system in the present embodiment
Wind by secondary air channel 1 enter press chamber 2 in, and sequentially passed through air port 31, the first air outlet 22 enters kitchen along kitchen wall
Fang Zhong, the wind into kitchen are slowly spread apart after docile metope flows a distance and slows down, are expanded with relatively low rate of dispersion
It is dissipated to whole kitchen space.
Claims (8)
1. a kind of household kitchen air-makeup system, including secondary air channel (1), the first end of the secondary air channel (1) is connected with natural wind regime,
It is characterized in that：Further include and press chamber (2), this presses chamber (2) to be arranged in the superjacent air space of kitchen furred ceiling (3) and inhaled close to remote
The side wall arrangement of kitchen ventilator (4), it is described to press chamber (2) that there is the first inlet air being connected with the second end of secondary air channel (1)
Mouth (21), the bottom for pressing chamber (2) offers the first air outlet (22) close to kitchen wall arrangement, corresponding, described
It is provided with kitchen furred ceiling (3) corresponding excessively air port (31) with the first air outlet (21).
2. household kitchen air-makeup system according to claim 1, it is characterised in that：The lower section of first air outlet (22)
Air guide member (5) is connected with, simultaneously section shaping is right angle fan to air guide member (5) inner hollow, is assembled under completion status, described to lead
The top planes (51) of wind part (5) abut the lower surface arrangement of kitchen furred ceiling (3) and are provided with the second air inlet (511), described to lead
The side panels (52) of wind part (5) arrange that at least side of air guide member (5) arcwall face (53) offers against kitchen side wall
The second air outlet (54) arranged along its length.
3. household kitchen air-makeup system according to claim 2, it is characterised in that：It is provided with and covers in the air guide member (5)
The nozzle (55) on the second air outlet (54) is covered, the spout (50) that air feed passes through is provided with the nozzle (55), the spout (50)
Including the wind-guiding section (551), speedup section (552) and scattered section (553) being mutually linked.
4. household kitchen air-makeup system according to claim 3, it is characterised in that：The bore of the wind-guiding section (551) is certainly
Air intake gradually tapers up backward, the bore self-consistentency of the speedup section (552), and the bore of the scattered section (553) is from forward direction
Gradually expand afterwards.
5. household kitchen air-makeup system according to claim 4, it is characterised in that：The wind-guiding section (551) is along nozzle
(55) two sides of length direction arrangement are configured to the first arcwall face (554), and the scattered section (553) is along nozzle (55) length
The two sides of direction arrangement are configured to the second arcwall face (555).
6. the household kitchen air-makeup system according to any claim in claim 2~5, it is characterised in that：It is described to lead
The both sides of wind part (5) arcwall face (53) offer the second air outlet (54) arranged along its length respectively.
7. the household kitchen air-makeup system according to any claim in Claims 1 to 5, it is characterised in that：It is described equal
Booster fan (6) is connected between pressure chamber (2) and secondary air channel (1).
A kind of benefit wind method of household kitchen air-makeup system 8. application is had the right in requirement 1~7 described in any claim, its
It is characterized in that：When range hood is run, natural wind is entered by secondary air channel (1) presses in chamber (2), and sequentially passes through air port
(31), the first air outlet (22) enters in kitchen along kitchen wall, and the wind into kitchen flows a distance in docile metope
And slowly spread apart after slowing down, whole kitchen space is diffused to relatively low rate of dispersion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710467030.7A CN108006880B (en) | 2017-06-19 | 2017-06-19 | Domestic kitchen air supplementing system and air supplementing method using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710467030.7A CN108006880B (en) | 2017-06-19 | 2017-06-19 | Domestic kitchen air supplementing system and air supplementing method using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108006880A true CN108006880A (en) | 2018-05-08 |
| CN108006880B CN108006880B (en) | 2023-11-17 |
Family
ID=62047640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710467030.7A Active CN108006880B (en) | 2017-06-19 | 2017-06-19 | Domestic kitchen air supplementing system and air supplementing method using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108006880B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990446A (en) * | 2019-04-30 | 2019-07-09 | 苏州恒境环保科技有限公司 | A kind of air-supply incremental air port |
| CN113566254A (en) * | 2021-08-05 | 2021-10-29 | 同济大学 | Residential kitchen air supplementing method and air supplementing integrated range hood |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207476A (en) * | 1996-11-20 | 1999-02-10 | 三菱电机株式会社 | Air ventillation or air system |
| US20100318230A1 (en) * | 2009-06-15 | 2010-12-16 | Guopeng Liu | Kitchens exhaust hood and make-up air handling unit optimal speed control system |
| CN103343995A (en) * | 2013-06-13 | 2013-10-09 | 同济大学 | Pollution-isolated oligodynamic fresh air-supplementing apparatus |
| CN204285660U (en) * | 2014-12-08 | 2015-04-22 | 台州创兴环保科技有限公司 | A kind of wall-mounted air purification device |
| CN204853609U (en) * | 2015-07-10 | 2015-12-09 | 青岛海尔智能技术研发有限公司 | Lampblack absorber |
| CN105783065A (en) * | 2016-04-15 | 2016-07-20 | 苏州市东越不锈钢制品有限公司 | Modular oil smoke removing system |
| CN206959238U (en) * | 2017-06-19 | 2018-02-02 | 宁波方太厨具有限公司 | A kind of household kitchen air-makeup system |
-
2017
- 2017-06-19 CN CN201710467030.7A patent/CN108006880B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207476A (en) * | 1996-11-20 | 1999-02-10 | 三菱电机株式会社 | Air ventillation or air system |
| US20100318230A1 (en) * | 2009-06-15 | 2010-12-16 | Guopeng Liu | Kitchens exhaust hood and make-up air handling unit optimal speed control system |
| CN103343995A (en) * | 2013-06-13 | 2013-10-09 | 同济大学 | Pollution-isolated oligodynamic fresh air-supplementing apparatus |
| CN204285660U (en) * | 2014-12-08 | 2015-04-22 | 台州创兴环保科技有限公司 | A kind of wall-mounted air purification device |
| CN204853609U (en) * | 2015-07-10 | 2015-12-09 | 青岛海尔智能技术研发有限公司 | Lampblack absorber |
| CN105783065A (en) * | 2016-04-15 | 2016-07-20 | 苏州市东越不锈钢制品有限公司 | Modular oil smoke removing system |
| CN206959238U (en) * | 2017-06-19 | 2018-02-02 | 宁波方太厨具有限公司 | A kind of household kitchen air-makeup system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990446A (en) * | 2019-04-30 | 2019-07-09 | 苏州恒境环保科技有限公司 | A kind of air-supply incremental air port |
| CN113566254A (en) * | 2021-08-05 | 2021-10-29 | 同济大学 | Residential kitchen air supplementing method and air supplementing integrated range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108006880B (en) | 2023-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207622093U (en) | A kind of double air-inlet range hoods | |
| CN108240654A (en) | A kind of double air-inlet range hoods and its control method | |
| CN108006880A (en) | A kind of household kitchen air-makeup system and application have the benefit wind method of the system | |
| CN206959238U (en) | A kind of household kitchen air-makeup system | |
| CN207555884U (en) | A kind of household kitchen air-makeup system | |
| CN110081480A (en) | A kind of range hood | |
| CN207407405U (en) | Range hood | |
| CN206037193U (en) | A quick -witted dual -purpose induced -draft fan | |
| CN106016399B (en) | A kind of range hood plug-flow mechanism and plug-flow method | |
| CN201569050U (en) | Guiding device for lampblack exhaust and ventilation in kitchen | |
| CN204704892U (en) | Small-sized split type air curtain system | |
| CN208886860U (en) | A kind of range hood | |
| CN208011820U (en) | A kind of energy saving kitchen ventilator of oblique wind curtain type | |
| CN208170467U (en) | A kind of range hood | |
| CN209181188U (en) | A kind of cabinet type bidirectional flow fresh air system | |
| CN209355428U (en) | Building basement low energy consumption ventilating system | |
| CN206247424U (en) | A kind of range hood plug-flow mechanism | |
| WO2019148994A1 (en) | Range hood | |
| CN109059050A (en) | A kind of air curtain gas range | |
| CN206771478U (en) | A kind of oil smoke integrated stove for possessing full negative pressure chamber | |
| CN209726435U (en) | A kind of compression type gas-cooker air compensation device | |
| CN206398873U (en) | The outer machine of air conditioner used in kitchen | |
| CN205445971U (en) | No fan blade air discharge fan | |
| CN205383666U (en) | No leaf negative pressure smoke ventilator | |
| CN107490038A (en) | A kind of air exchanging method of smoke exhaust ventilator |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |