CN105066252A - New fan - Google Patents
New fan Download PDFInfo
- Publication number
- CN105066252A CN105066252A CN201510504746.0A CN201510504746A CN105066252A CN 105066252 A CN105066252 A CN 105066252A CN 201510504746 A CN201510504746 A CN 201510504746A CN 105066252 A CN105066252 A CN 105066252A
- Authority
- CN
- China
- Prior art keywords
- blower fan
- new blower
- reversal valve
- outlet
- air
- 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.)
- Pending
Links
- 238000001914 filtration Methods 0.000 claims abstract description 9
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000004887 air purification Methods 0.000 abstract description 9
- 238000009423 ventilation Methods 0.000 abstract description 4
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 description 15
- 239000007789 gas Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000007872 degassing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003519 ventilatory effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002699 waste material 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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- 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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a new fan, which comprises a first fan, a second fan, a heat exchange device and a filtering device, wherein the new fan comprises an exhaust channel and an internal circulation channel which are mutually independent, the exhaust channel reaches the second fan and an outdoor air outlet from an indoor air inlet through the heat exchange device, and the internal circulation channel reaches the first fan and the indoor air outlet from the indoor air inlet through the filtering device and the heat exchange device. The fresh air machine can simultaneously realize the fresh air function of bidirectional ventilation and the air purification function of unidirectional internal circulation.
Description
Technical field
The present invention relates to new blower fan, particularly relate to a kind of new blower fan that simultaneously can carry out indoor air purification.
Background technology
For improving the air quality in room, the main measure adopted at present mainly contains two kinds: (1) indoor air purification, such as, by air purifier etc.; (2) indoor-outdoor air exchanges, such as, by new blower fan etc.Wherein, indoor air purification is only the circulation utilizing room air, filters, the purified treatment such as taste of dispelling to room air, and does not have ventilatory, also namely cannot change the composition (such as oxygen content, carbon dioxide content etc.) of room air.It is then by the two-way ventilation of indoor and outdoor that indoor-outdoor air exchanges, room air is forced partly to change to outdoor, thus change the composition (such as oxygen content, water capacity, carbon dioxide content etc.) of room air, when indoor/outdoor temperature-difference is larger, even if adopt the new wind technology of Total heat exchange, heat (or cold) is also still inevitably caused to lose.
To this, patent document CN103471209A discloses the new blower fan of a kind of integral type, outdoor air inlet and the air outlet place of this new blower fan are provided with flap, thus can simultaneously outside control room into and out of the break-make in air port, to realize the control of the bidirectional ventilated circulation of indoor and outdoor (being equivalent to new wind pattern) and independent indoor air circulation (being equivalent to air purification mode).
But, when this new blower fan works in air purification mode, the circulating path of room air is successively through indoor air inlet, the second blower fan, heat exchanger, outdoor air outlet, flap, outdoor air inlet, the first blower fan, filter, heat exchanger, indoor air outlet.Due to indoor air circulation path during purification of air occupy air exhaust passage (, air inlet is through the second blower fan indoor, heat exchanger is to the air duct of outdoor air outlet) whole process, and only could air circulation path in forming chamber when air outlet and outdoor air inlet (also namely cutting off two-way ventilatory completely) outside flap close chamber, therefore this new blower fan can not realize the two-way ventilatory of indoor and outdoor (new wind function) and indoor air circulation function (air-cleaning function) simultaneously, and alternatively can only realize this two functions, compromise selection scheme cannot be provided thus to user.In addition, even if under air purification mode, two blower fans of this new blower fan also must operate simultaneously, cause the waste of the energy thus.
Summary of the invention
Based on above-mentioned present situation, main purpose of the present invention is to provide a kind of new blower fan, and it can realize new wind function and air-cleaning function simultaneously.Further, when this new blower fan works under air purification mode, exhaust fan without the need to work, thus economize energy.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of new blower fan, it comprises the first blower fan, the second blower fan, heat-exchange device and filter, wherein, described new blower fan comprises separate air exhaust passage and inner cycle channel, described air exhaust passage arrives the second blower fan and outdoor air outlet from indoor air inlet through heat-exchange device, and from indoor air inlet, device and heat-exchange device arrive the first blower fan and indoor air outlet to described inner cycle channel after filtration.
Preferably, described indoor air inlet place is provided with the first reversal valve, and described first reversal valve has first outlet and the second outlet of leading to described inner cycle channel and described air exhaust passage respectively.
Preferably, the spool of described first reversal valve has three operating positions, close described first when the spool is in the first position export and open the second outlet, close described second when the spool is in the second position export and open the first outlet, open described first outlet and the second outlet when described spool is in the 3rd position simultaneously.
Preferably, described new blower fan comprises the second reversal valve, and described second reversal valve is used for opening or close chamber's external air inlet mouth.
Preferably, when described new blower fan comprises the first reversal valve and the second reversal valve simultaneously, described first reversal valve and described second reversal valve are configured to: when the first reversal valve cuts out the second outlet, described second reversal valve close chamber external air inlet mouth.
Preferably, described filter comprises except PM2.5 module and/or except formaldehyde module.
Preferably, electrical heating module is provided with between described heat-exchange device and the first blower fan.
Preferably, described heat-exchange device comprises Total heat exchange core body.
Preferably, described new blower fan is wall-hanging new blower fan.
Preferably, described new blower fan comprises the air inlet of the air inlet be arranged on sidewall and/or the seam crossing being arranged at front panel and sidewall.
The inner cycle channel of new blower fan of the present invention does not take air exhaust passage, therefore these two passages can work simultaneously, and the formation of inner cycle channel is also without the need to closing new wind passage, therefore new wind passage also can work simultaneously, can realize the new wind function of two-way ventilation and the air-cleaning function of unidirectional Inner eycle thus simultaneously.Further, by the reasonable setting of scavenging air valve, new blower fan of the present invention also can optionally only realize in above-mentioned functions one or both.In particular, when only realizing air-cleaning function, the second blower fan (air draft) is without the need to running, thus economize energy.
Accompanying drawing explanation
Hereinafter with reference to accompanying drawing, the new blower fan according to the preferred embodiment of the present invention is described.In figure:
Fig. 1 is the internal structure schematic diagram of the new blower fan of the preferred embodiment of the present invention, and wherein the spool of the first reversal valve is in primary importance;
Fig. 2 is the internal structure schematic diagram of new blower fan when the spool of the first reversal valve is in the second place of Fig. 1; And
Fig. 3 is the internal structure schematic diagram of new blower fan when the spool of the first reversal valve is in the 3rd position of Fig. 1.
Detailed description of the invention
As shown in Figure 1, new blower fan of the present invention comprises the first blower fan (such as new wind blower fan) the 1, second blower fan (such as exhaust fan) 2, heat-exchange device (such as preferred Total heat exchange core body) 3 and filter 4,5.With prior art newly fan-type like, on the one hand, the air outlet of the first blower fan 1 is communicated to indoor air outlet 10, the air inlet of the first blower fan 1 is communicated to the outlet of the gas channel in a direction in heat-exchange device 3, the entrance of this gas channel is then communicated to outdoor air inlet 11, forms the new wind passage of new blower fan thus.On the other hand, the outlet of the second blower fan 2 is to outdoor air outlet 12, the air inlet of the second blower fan 2 is communicated to the outlet of the gas channel in another direction in heat-exchange device 3, and the entrance of this gas channel is then communicated to indoor air inlet 9, forms the air exhaust passage of new blower fan thus.
For filtering the new wind in outdoor, filter is preferably arranged on the porch (such as coarse filtration net etc.) of new wind passage and/or the gas channel upstream (filter 4 and 5 such as shown in Fig. 1) of heat-exchange device.
The main operational principle of this kind of new blower fan is: after switching on power, outdoor new wind is by outdoor air inlet 11 ingress engine, near the air inlet being arrived the first blower fan 1 under the suction of the first blower fan 1 by heat-exchange device 3 (can air chamber be set at this), then send into indoor by the first blower fan 1 through indoor air outlet 10; Indoor exhaust wind is then by indoor air inlet 9 ingress engine, near the air inlet being arrived the second blower fan 2 under the suction of the second blower fan 2 by heat-exchange device 3 (can air chamber be set at this), then send outdoor by the second blower fan 2 through outdoor air outlet 12.By the flowing in different runners in heat-exchange device 3 of the new wind in outdoor and indoor exhaust wind, owing to there is temperature and psychrometric difference in outdoor new wind and indoor exhaust wind, so complete the exchange of temperature and/or humidity (when full-heat-exchange equipment) in heat-exchange device 3, so temperature and/or the water capacity of new wind can be improved in the winter time, temperature and/or the water capacity of new wind can be reduced in summer, thus while fresh air is provided, reduce the impact of new wind on indoor environment (temperature, humidity), reduce the energy loss of air-conditioning equipment.
According to the preferred embodiment of the present invention, new blower fan of the present invention comprises separate air exhaust passage 14 and inner cycle channel 13, wherein, described air exhaust passage 14 arrives the second blower fan 2 and outdoor air outlet 12 from indoor air inlet 9 through heat-exchange device 3, and from indoor air inlet 9, device 4,5 and heat-exchange device 3 arrive the first blower fan 1 and indoor air outlet 10 to described inner cycle channel 13 after filtration.Wherein, inner cycle channel section indoor between air inlet 9 to filter 4 such as can utilize dividing plate to be separated out (as shown in Figure 1 in machine, space between dividing plate and organism sidewall), merge with new wind passage when arriving the upstream side of filter 4 to together with (such as air chamber is set inside outdoor air inlet 11, this inner cycle channel section is communicated to this air chamber, and filter is then arranged on plenum interior and is positioned at the downstream of airflow direction).
Thus, room air in indoor air inlet 9 ingress engine, and can arrive the first blower fan 1 sequentially through filter 4,5 and heat-exchange device, and and then flow back to indoor through indoor air outlet 10, thus complete indoor air circulation, play the effect purified the air of a room.When the first blower fan 1 operates, under its suction, outdoor air can in outdoor air inlet 11 ingress engine, room air also can in indoor air inlet 9 ingress engine, these two strands of air finally can be discharged to indoor after filtration with after heat exchange, thus realize new wind function and air-cleaning function simultaneously.Meanwhile, when the second blower fan 2 operates, normal air-exhausting function can be realized.Thus, new blower fan of the present invention can realize the new wind function of two-way ventilation and the air-cleaning function of unidirectional Inner eycle simultaneously, and this point is obviously different from new blower fan disclosed in document CN103471209A.
Preferably, can close or open inner cycle channel 13 and air exhaust passage 14 selectively.For this reason, described indoor air inlet 9 place is provided with the first reversal valve 7, and described first reversal valve 7 has first outlet 15 and second outlet 16 of leading to described inner cycle channel 13 and described air exhaust passage 14 respectively.By making the first reversal valve 7 close the first outlet 15 or the second outlet 16, corresponding passage can be closed, thus make the air in indoor air inlet 9 ingress engine alternatively enter corresponding passage, also namely alternatively selecting air-exhausting function or air-cleaning function.
When only selecting air-cleaning function, do not have air in air exhaust passage, thus the second blower fan 2 is without the need to running.Therefore, in this operating mode, can make the second fan parking to save electric energy, this point is also obviously different from new blower fan disclosed in document CN103471209A.
Preferably, the spool of described first reversal valve 7 of the present invention has three operating positions, closes described first outlet 15 when the spool is in the first position and opens the second outlet 16 (see Fig. 1), now only selecting degassing function; Close described second outlet 16 when the spool is in the second position and open the first outlet 15 (see Fig. 2), now only selecting air-cleaning function; Open described first outlet 15 and second outlet 16 (see Fig. 3) when described spool is in the 3rd position simultaneously, now select degassing function and air-cleaning function simultaneously.
Preferably, described new blower fan of the present invention also comprises the second reversal valve 8, and described second reversal valve 8 is for opening or close chamber's external air inlet mouth 11.Such as, the second reversal valve 8 air inlet 11 disposed in the outdoor place or inner side.By means of the effect of the second reversal valve 8, the selectively unlocking of new wind function can be realized.Such as, during the second reversal valve 8 close chamber external air inlet mouth 11, then new wind function is closed, and now, new blower fan only can realize air-cleaning function.Especially, now can close air exhaust passage 14 and the second blower fan 2, thus reduce the energy loss of new blower fan.
Preferably, described first reversal valve 7 and described second reversal valve 8 can be configured to: when the first reversal valve 7 cuts out the second outlet 16, described second reversal valve 8 close chamber external air inlet mouth 11.This set such as realizes by the control system (not shown) of new blower fan; such as; when simple selection air-cleaning function; control system can make the first reversal valve 7 close the second outlet 16; and make the second reversal valve 8 close chamber external air inlet mouth 11, and make the second blower fan 2 shut down simultaneously simultaneously.
When the spool of the first reversal valve 7 is in the 3rd position, described first outlet 15 and the second outlet 16 are opened simultaneously, and now degassing function and air-cleaning function are selected simultaneously; Now, when the second reversal valve 8 opening chamber external air inlet mouth 11, new wind function is also selected.So new blower fan of the present invention still can realize indoor and outdoor bidirectional circulating and indoor one-way circulation simultaneously.Also be, room air indoor in air inlet 9 ingress engine after, after the first scavenging air valve 7, a part enters air exhaust passage 14, another part enters inner cycle channel 13, simultaneously outdoor air is outdoor in air inlet 11 ingress engine, after outdoor air in ingress engine mixes with the room air entering inner cycle channel 13, again by filter and heat-exchange device 3, and heat exchange (or Total heat exchange) is carried out with the room air entering air exhaust passage 14 in heat-exchange device 3, final realization is to the purification of room air and renewal.
Preferably, described filter can comprise except PM2.5 module (such as HEPA etc.) 4 and/or except formaldehyde module 5, thus improves IAQ further on the basis of conventional filtration.
Preferably, electrical heating module 6 is provided with between described heat-exchange device 3 and the first blower fan 1.Motor heat module 6 can heat being about to enter indoor air.Such as, when running new wind function in the winter time, although through heat exchange, the temperature of this part air still lower than indoor temperature, therefore, by the heating of electrical heating module 6, can make to enter indoor air themperature comfortable.Again such as, when running air-cleaning function in the winter time, the heating still by electrical heating module 6 improves temperature of outgoing air, thus makes new blower fan possess the function of warm-air drier simultaneously.
Preferably, described heat-exchange device 3 is full-heat-exchange equipment, and such as it comprises Total heat exchange core body.Like this, when running new wind function, Total heat exchange can be carried out to outdoor air, promoting the comfort level entering indoor air.
Preferably, new blower fan of the present invention is wall-hanging new blower fan.Wall-hanging new blower fan has multiple machine wall being positioned at indoor, and such as antetheca (front panel), multiple sidewalls etc., the existence of these machine walls, can facilitate the setting of indoor air inlet.Preferably, new blower fan of the present invention comprises multiple indoor air inlet, thus can increase indoor intake, this such as under air purification mode advantageously.Multiple indoor air inlet such as comprises, and is arranged at the air inlet on sidewall, the air inlet being arranged at the seam crossing of front panel and sidewall etc.
Preferably, new blower fan of the present invention also comprises control panel and control system, can select one or more in new wind function, air-exhausting function, air-cleaning function, electric heating function by control panel.
Those skilled in the art will readily understand, under the prerequisite of not conflicting, above-mentioned each advantageous manner freely can combine, superpose.
Be to be understood that, above-mentioned embodiment is only exemplary, and it is nonrestrictive, when not departing from general principle of the present invention, the various obvious or equivalent amendment that those skilled in the art can make for above-mentioned details or replacement, all will be contained in right of the present invention.
Claims (10)
1. a new blower fan, it comprises the first blower fan, the second blower fan, heat-exchange device and filter, wherein, described new blower fan comprises separate air exhaust passage and inner cycle channel, described air exhaust passage arrives the second blower fan and outdoor air outlet from indoor air inlet through heat-exchange device, and from indoor air inlet, device and heat-exchange device arrive the first blower fan and indoor air outlet to described inner cycle channel after filtration.
2. new blower fan as claimed in claim 1, it is characterized in that, described indoor air inlet place is provided with the first reversal valve, and described first reversal valve has first outlet and the second outlet of leading to described inner cycle channel and described air exhaust passage respectively.
3. new blower fan as claimed in claim 2, it is characterized in that, the spool of described first reversal valve has three operating positions, close described first when the spool is in the first position export and open the second outlet, close described second when the spool is in the second position export and open the first outlet, open described first outlet and the second outlet when described spool is in the 3rd position simultaneously.
4. the new blower fan as described in one of claim 1-3, is characterized in that, described new blower fan comprises the second reversal valve, and described second reversal valve is used for opening or close chamber's external air inlet mouth.
5. new blower fan as claimed in claim 4, it is characterized in that, when described new blower fan comprises the first reversal valve and the second reversal valve simultaneously, described first reversal valve and described second reversal valve are configured to: when the first reversal valve cuts out the second outlet, described second reversal valve close chamber external air inlet mouth.
6. the new blower fan as described in one of aforementioned claim, is characterized in that, described filter comprises except PM2.5 module and/or except formaldehyde module.
7. the new blower fan as described in one of aforementioned claim, is characterized in that, is provided with electrical heating module between described heat-exchange device and the first blower fan.
8. the new blower fan as described in one of aforementioned claim, is characterized in that, described heat-exchange device comprises Total heat exchange core body.
9. the new blower fan as described in one of aforementioned claim, is characterized in that, described new blower fan is wall-hanging new blower fan.
10. new blower fan as claimed in claim 9, it is characterized in that, described new blower fan comprises the air inlet of the air inlet be arranged on sidewall and/or the seam crossing being arranged at front panel and sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510504746.0A CN105066252A (en) | 2015-08-17 | 2015-08-17 | New fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510504746.0A CN105066252A (en) | 2015-08-17 | 2015-08-17 | New fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105066252A true CN105066252A (en) | 2015-11-18 |
Family
ID=54495686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510504746.0A Pending CN105066252A (en) | 2015-08-17 | 2015-08-17 | New fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105066252A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990509A (en) * | 2017-11-15 | 2018-05-04 | 珠海格力电器股份有限公司 | Control method of fresh air equipment and fresh air equipment |
| CN108895642A (en) * | 2018-08-15 | 2018-11-27 | 珠海格力电器股份有限公司 | Air duct system and air conditioner |
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| CN203704238U (en) * | 2014-02-24 | 2014-07-09 | 刘华荣 | Fresh air fan function exchange principle and application thereof |
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| CN204830188U (en) * | 2015-08-17 | 2015-12-02 | 珠海格力电器股份有限公司 | New fan |
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2015
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990509A (en) * | 2017-11-15 | 2018-05-04 | 珠海格力电器股份有限公司 | Control method of fresh air equipment and fresh air equipment |
| CN108895642A (en) * | 2018-08-15 | 2018-11-27 | 珠海格力电器股份有限公司 | Air duct system and air conditioner |
| CN108895642B (en) * | 2018-08-15 | 2023-10-27 | 珠海格力电器股份有限公司 | Air duct system and air conditioner |
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Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |