CN107726477A - A kind of fresh air dehumidifier and its control method - Google Patents
A kind of fresh air dehumidifier and its control method Download PDFInfo
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- CN107726477A CN107726477A CN201710822768.0A CN201710822768A CN107726477A CN 107726477 A CN107726477 A CN 107726477A CN 201710822768 A CN201710822768 A CN 201710822768A CN 107726477 A CN107726477 A CN 107726477A
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- air
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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
- 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
- F24F3/14—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 humidification; by dehumidification
- F24F3/1411—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 humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
- F24F3/1423—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 humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a kind of fresh air dehumidifier and its control method, including shell, controller, extraneous air inlet, the first air exhauster, air purifier, adjuster, activated carbon adsorption layer, air channel, valve, air detection instrument, indoor air inlet, the second air exhauster, air blower, compressor, condenser, choke valve and evaporator, the extraneous air inlet output end is provided with the first air exhauster, the first air exhauster output end is provided with air purifier, the air purifier output end is provided with adjuster, and the conditioner outlet end is provided with activated carbon adsorption layer.The setting that the present invention passes through air purifier, be advantageous to carry out purified treatment to outside air, prevent outside contamination air from getting in, human body and inside plant are caused damage, by the setting of adjuster, be advantageous to adjust indoor circulation and indoor outer circulation folding, be easy in concrete operations, different dehumidification control methods is realized, so as to reach the purpose of the present invention.
Description
Technical field
The present invention relates to dehumidifying technology field, more particularly to a kind of fresh air dehumidifier and its control method.
Background technology
At present, most of indoor dehumidifications are all to use air conditioner dehumidification method, and air-conditioning system can not solve humiture simultaneously at all
The problem of, some is using reduction leaving air temp, then reaches the purpose for reducing relative humidity with Electric heating raising temperature, then newly
Under environment under air quantity requirement very, such method can be used, but is also consumed energy very much, nor desirable method, if entirely
VMC, almost just do not reach requirement, it is assumed that 18 degree of the cold leaving air temp of table, now relative humidity be higher than 95%, be warming up to 23
Degree, relative humidity also will more than 70%, so the stand-alone development of the air-treatment unit for all-fresh air, be it is necessary,
And belonging to circulation, gradual dehumidifying in common dehumidifier holding chamber, dehumidifying rate is slower within the unit interval.Therefore, invention is a kind of
Fresh air dehumidifier and its control method are necessary to solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of fresh air dehumidifier and its control method, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the present invention provides following technical scheme：A kind of fresh air dehumidifier and its control method, including
Shell, controller, extraneous air inlet, the first air exhauster, air purifier, adjuster, activated carbon adsorption layer, air channel, valve, sky
Gas detector, indoor air inlet, the second air exhauster, air blower, compressor, condenser, choke valve and evaporator, the external world is entered
Air port output end is provided with the first air exhauster, and the first air exhauster output end is provided with air purifier, the purification of air
Device output end is provided with adjuster, and the conditioner outlet end is provided with activated carbon adsorption layer, the activated carbon adsorption layer output
End is provided with air channel, and the air channel output end is provided with valve, and the valve input is provided with air detection instrument, the valve
Output end is provided with indoor air inlet, and the indoor air inlet side is provided with the second air exhauster, the second air exhauster output
End is connected with adjuster input, and the air channel output end is provided with compressor, and the compressor output end is provided with condenser,
The condenser output end is provided with choke valve, and the choke valve output end is provided with evaporator, the evaporator output end with
Air channel input connection, the valve output are connected with air purifier input, and the valve output is inhaled with activated carbon
Attached layer input connection.
The air channel, compressor, condenser, choke valve and evaporator form condensation and follow bad loop, the compressor suction
The gas of low-temp low-pressure, after compression, become the saturated gas of HTHP, be sent into condenser, the saturated air of HTHP
Body keeps pressure constant, outwards releases heat within the condenser through supercooling, so as to be condensed into the liquid of low-temp low-pressure, from cold
Discharged in condenser, through refrigeration choke valve, because by resistance and when pressure decline, cause some refrigerant to be changed into gas, inhale simultaneously
Gasification latent heat is received, itself temperature is also reduced, turns into the damp steam of low-temp low-pressure, the damp steam enters in evaporator, system
Cryogen absorbs the heat in air channel, makes the cools air in air channel, then pass through Valved discharge to room in the case where pressure is constant
It is interior, reach the effect of indoor refrigeration.
The extraneous air inlet, the first air exhauster, air purifier, adjuster, activated carbon adsorption layer, air channel, valve, sky
Gas detector and indoor air inlet forming chamber inner-outer circulation, first air exhauster extract outside air, warp from extraneous air inlet
After air purifier purification, activated carbon adsorption layer is entered by adjuster, activated carbon adsorption layer adsorbs to it, after purification
Gas in aqueous vapor absorption fall, gas after dehumidifying follows bad loop and cooled by being condensed in air channel, and the gas after cooling enters
Enter valve to detect by air detection instrument, it is qualified after gas be discharged into interior from indoor air inlet, underproof gas difference
It is discharged into air purifier and activated carbon adsorption layer, then is circulated.
Second air exhauster, adjuster, activated carbon adsorption layer, air channel, valve, air detection instrument and the indoor air inlet degree of lip-rounding
Into indoor circulation, second air exhauster extracts indoor air and enters activated carbon adsorption layer by adjuster, and activated carbon is inhaled
Attached layer adsorbs to it, and aqueous vapor absorption in gas is fallen, and the gas after dehumidifying follows bad loop by condensation in air channel and dropped
Temperature, the gas after cooling are detected into valve by air detection instrument, it is qualified after gas be discharged into interior from indoor air inlet,
Underproof gas is discharged into activated carbon adsorption layer, then is dehumidified.
Preferably, the indoor air inlet side is provided with air blower, the air blower input and indoor connection, described
Air blower output end extends to outdoor.
Preferably, the controller is arranged at case surface, and the controller is electrically connected with adjuster.
Preferably, the air purifier output end extends to outdoor.
Preferably, the valve is arranged to four opening valves.
Preferably, the case surface is provided with controlling switch, the controlling switch and compressor, condenser, choke valve
It is electrically connected with evaporator, the controlling switch is electrically connected with controller.
The technique effect and advantage of the present invention：The present invention is advantageous to enter outside air by the setting of air purifier
Row purified treatment, prevent outside contamination air from getting in, human body and inside plant are caused damage, pass through setting for adjuster
Put, be advantageous to adjust indoor circulation and indoor outer circulation folding, be easy in concrete operations, realize different Dehumidification controlling sides
Method, by the setting of activated carbon adsorption layer, be advantageous to moisture contained in air after adsorption cleaning, avoid malaria from entering
Enter to interior, the facility of interior caused damage, by the setting of compressor, condenser, choke valve and evaporator, be advantageous to by
Air in air channel carries out cooling processing, is reached with this and carries out cooling processing to interior, passes through setting for valve and air detection instrument
Put, whether the air facilitated deciding on after dehumidifying is up to standard, avoids below standard air from getting in, human body and indoor equipment are made
Into damage, so as to reach the purpose of the present invention.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present invention.
Fig. 2 follows bad loop structure schematic diagram for present invention condensation.
In figure：1 extraneous air inlet, 2 first air exhausters, 3 air purifiers, 4 adjusters, 5 activated carbon adsorption layers, 6 air channels,
7 valves, 8 air detection instruments, air inlet, 10 second air exhausters, 11 air blowers, 12 compressors, 13 condensers, 14 throttlings in Room 9
Valve, 15 evaporators.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
A kind of fresh air dehumidifier and its control method according to Fig. 1-2, including shell, controller, extraneous air inlet
1st, the first air exhauster 2, air purifier 3, adjuster 4, activated carbon adsorption layer 5, air channel 6, valve 7, air detection instrument 8, interior
Air inlet 9, the second air exhauster 10, air blower 11, compressor 12, condenser 13, choke valve 14 and evaporator 15, its feature exist
In：The output end of extraneous air inlet 1 is provided with the first air exhauster 2, and the output end of the first air exhauster 2 is provided with purification of air
Device 3, by the setting of air purifier 3, be advantageous to carry out purified treatment to outside air, prevent outside contamination air from entering to enter the room
It is interior, human body and inside plant are caused damage, the output end of air purifier 3 is provided with adjuster 4, passes through adjuster 4
Set, be advantageous to adjust indoor circulation and indoor outer circulation folding, be easy in concrete operations, realize different Dehumidification controlling sides
Method, the output end of adjuster 4 are provided with activated carbon adsorption layer 5, and by the setting of activated carbon adsorption layer 5, it is net to be advantageous to absorption
Moisture contained in air, avoids malaria from entering interior after change, and the facility of interior is caused damage, the activity
The output end of charcoal adsorption layer 5 is provided with air channel 6, and the output end of air channel 6 is provided with valve 7, and the input of valve 7 sets free
Gas detector 8, by the setting of valve 7 and air detection instrument 8, whether the air facilitated deciding on after dehumidifying is up to standard, avoids not
Air up to standard is got in, and human body and indoor equipment are caused to damage, and the output end of valve 7 is provided with indoor air inlet 9,
The side of indoor air inlet 9 is provided with the second air exhauster 10, and the output end of the second air exhauster 10 connects with the input of adjuster 4
Connect, the output end of air channel 6 is provided with compressor 12, and the output end of compressor 12 is provided with condenser 13, the condenser
13 output ends are provided with choke valve 14, and the output end of choke valve 14 is provided with evaporator 15, the output end of evaporator 15 with
The input connection of air channel 6, by the setting of compressor 12, condenser 13, choke valve 14 and evaporator 15, is advantageous to air channel 6
Interior air carries out cooling processing, is reached with this and cooling processing is carried out to interior, the output end of valve 7 and air purifier 3
Input is connected, and the output end of valve 7 is connected with the input of activated carbon adsorption layer 5, the air channel 6, compressor 12, condenser
13rd, choke valve 14 and evaporator 15 form condensation and follow bad loop, and the compressor 12 sucks the gas of low-temp low-pressure, compressed
Afterwards, become the saturated gas of HTHP, be sent into condenser 13, the saturated gas of HTHP is in condenser 13 through supercooling
But, keep pressure constant, outwards release heat, so as to be condensed into the liquid of low-temp low-pressure, discharged from condenser 13, by system
Cold choke valve 14, because by resistance and when pressure decline, cause some refrigerant to be changed into gas, while absorb gasification latent heat, make it
Self-temperature also reduces, and turns into the damp steam of low-temp low-pressure, and the damp steam enters in evaporator 15, and refrigerant is constant in pressure
In the case of, the heat in air channel 6 is absorbed, makes the cools air in air channel 6, then interior is discharged into by valve 7, reach indoor
The effect of refrigeration, the indoor side of air inlet 9 are provided with air blower 11, the input of air blower 11 and indoor connection, institute
State the output end of air blower 11 and extend to outdoor, the controller is arranged at case surface, and the controller electrically connects with adjuster 4
Connect, the output end of air purifier 3 extends to outdoor, and the case surface is provided with controlling switch, the controlling switch with
Compressor 12, condenser 13, choke valve 14 and evaporator 15 are electrically connected with, and the controlling switch is electrically connected with controller.
Embodiment one：
By adjustment control device, controlling switch is opened, condensation follows bad loop starts, then adjustment control device, closes adjuster 4
Interior room inner cycle channel, now the first air exhauster 2 from extraneous air inlet 1 extract outside air, through air purifier 3 purification after,
Activated carbon adsorption layer 5 is entered by adjuster 4, activated carbon adsorption layer 5 adsorbs to it, aqueous vapor in purified gas is inhaled
It is attached fall, gas after dehumidifying follows bad loop by condensation in air channel 6 and cooled, and the gas after cooling passes through sky into valve 7
Gas detector 8 detects, it is qualified after gas be discharged into interior from indoor air inlet 9, underproof gas is discharged into air respectively
In clarifier 3 and activated carbon adsorption layer 5, then circulated, and the outdoor that air blower 11 discharges indoor muddy gas, with this
Reach the effect for purifying the air of a room and being dehumidified to interior.
Embodiment two：
By adjustment control device, controlling switch is opened, condensation follows bad loop starts, then adjustment control device, closes adjuster 4
Interior room inner-outer circulation passage, now the second air exhauster 10 extract interior air activated carbon adsorption layer is entered by adjuster 4
5, activated carbon adsorption layer 5 adsorbs to it, aqueous vapor absorption in gas is fallen, the gas after dehumidifying follows by condensation in air channel 6
Bad loop is cooled, and the gas after cooling is detected into valve 7 by air detection instrument 8, it is qualified after gas enter from interior
Gas port 9 is discharged into interior, and underproof gas is discharged into activated carbon adsorption layer 5, then is dehumidified, and reaches and room air is entered
The effect of row dehumidifying.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic,
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of fresh air dehumidifier and its control method, including shell, controller, extraneous air inlet（1）, the first air exhauster（2）、
Air purifier（3）, adjuster（4）, activated carbon adsorption layer（5）, air channel（6）, valve（7）, air detection instrument（8）, interior enters
Gas port（9）, the second air exhauster（10）, air blower（11）, compressor（12）, condenser（13）, choke valve（14）And evaporator
（15）, it is characterised in that：The extraneous air inlet（1）Output end is provided with the first air exhauster（2）, first air exhauster（2）
Output end is provided with air purifier（3）, the air purifier（3）Output end is provided with adjuster（4）, the adjuster
（4）Output end is provided with activated carbon adsorption layer（5）, the activated carbon adsorption layer（5）Output end is provided with air channel（6）, the wind
Road（6）Output end is provided with valve（7）, the valve（7）Input is provided with air detection instrument（8）, the valve（7）Output
End is provided with indoor air inlet（9）, the indoor air inlet（9）Side is provided with the second air exhauster（10）, second exhausting
Machine（10）Output end and adjuster（4）Input connects, the air channel（6）Output end is provided with compressor（12）, the compression
Machine（12）Output end is provided with condenser（13）, the condenser（13）Output end is provided with choke valve（14）, the choke valve
（14）Output end is provided with evaporator（15）, the evaporator（15）Output end and air channel（6）Input connects, the valve
（7）Output end and air purifier（3）Input connects, the valve（7）Output end and activated carbon adsorption layer（5）Input connects
Connect；
The air channel（6）, compressor（12）, condenser（13）, choke valve（14）And evaporator（15）Form condensation and follow bad loop,
The compressor（12）The gas of low-temp low-pressure is sucked, after compression, becomes the saturated gas of HTHP, is sent into condenser
（13）In, the saturated gas of HTHP is in condenser（13）It is middle to keep pressure constant, outwards release heat through supercooling, from
And the liquid of low-temp low-pressure is condensed into, from condenser（13）Middle discharge, by the choke valve that freezes（14）, because by resistance and when pressure
Decline, cause some refrigerant to be changed into gas, while absorb gasification latent heat, itself temperature is also reduced, turn into low-temp low-pressure
Damp steam, the damp steam enters evaporator（15）In, refrigerant absorbs air channel in the case where pressure is constant（6）In
Heat, make air channel（6）Interior cools air, then pass through valve（7）Interior is discharged into, reaches the effect of indoor refrigeration；
The extraneous air inlet（1）, the first air exhauster（2）, air purifier（3）, adjuster（4）, activated carbon adsorption layer（5）、
Air channel（6）, valve（7）, air detection instrument（8）With indoor air inlet（9）Forming chamber inner-outer circulation, first air exhauster（2）
From extraneous air inlet（1）Outside air is extracted, through air purifier（3）After purification, pass through adjuster（4）Into charcoal absorption
Layer（5）, activated carbon adsorption layer（5）It is adsorbed, aqueous vapor absorption in purified gas fallen, the gas after dehumidifying passes through
Air channel（6）Interior condensation follows bad loop and cooled, and the gas after cooling enters valve（7）Pass through air detection instrument（8）Detection, close
Gas after lattice is from indoor air inlet（9）Interior is discharged into, underproof gas is discharged into air purifier respectively（3）And activity
Charcoal adsorption layer（5）In, then circulated；
Second air exhauster（10）, adjuster（4）, activated carbon adsorption layer（5）, air channel（6）, valve（7）, air detection instrument
（8）With indoor air inlet（9）Form indoor circulation, second air exhauster（10）Extract indoor air and pass through adjuster（4）
Enter activated carbon adsorption layer（5）, activated carbon adsorption layer（5）It is adsorbed, aqueous vapor absorption in gas fallen, after dehumidifying
Gas is by air channel（6）Interior condensation follows bad loop and cooled, and the gas after cooling enters valve（7）Pass through air detection instrument
（8）Detection, it is qualified after gas from indoor air inlet（9）Interior is discharged into, underproof gas is discharged into activated carbon adsorption layer
（5）In, then dehumidified.
2. a kind of fresh air dehumidifier according to claim 1 and its control method, it is characterised in that：The indoor air inlet
（9）Side is provided with air blower（11）, the air blower（11）Input and indoor connection, the air blower（11）Output end is prolonged
Extend outdoor.
3. a kind of fresh air dehumidifier according to claim 2 and its control method, it is characterised in that：The controller is set
In case surface, the controller and adjuster（4）It is electrically connected with.
4. a kind of fresh air dehumidifier according to claim 1 and its control method, it is characterised in that：The air purifier
（3）Output end extends to outdoor.
5. a kind of fresh air dehumidifier according to claim 1 and its control method, it is characterised in that：The valve（7）If
It is set to four opening valves.
6. a kind of fresh air dehumidifier according to claim 1 and its control method, it is characterised in that：The case surface is set
It is equipped with controlling switch, the controlling switch and compressor（12）, condenser（13）, choke valve（14）And evaporator（15）Electrically connect
Connect, the controlling switch is electrically connected with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710822768.0A CN107726477A (en) | 2017-09-13 | 2017-09-13 | A kind of fresh air dehumidifier and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710822768.0A CN107726477A (en) | 2017-09-13 | 2017-09-13 | A kind of fresh air dehumidifier and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107726477A true CN107726477A (en) | 2018-02-23 |
Family
ID=61206178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710822768.0A Pending CN107726477A (en) | 2017-09-13 | 2017-09-13 | A kind of fresh air dehumidifier and its control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107726477A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899046A (en) * | 2021-10-28 | 2022-01-07 | 宁波威霖住宅设施有限公司 | New fan and control method for sterilization of new fan type |
| WO2024104103A1 (en) * | 2022-11-17 | 2024-05-23 | 江苏苏净集团有限公司 | Silica gel rotor and silica gel rotor dehumidifier |
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|---|---|---|---|---|
| CN101995062A (en) * | 2010-11-09 | 2011-03-30 | 帝思迈环境设备（上海）有限公司 | Total heat recovery humidifying fresh-air heat pump |
| CN103994500A (en) * | 2014-05-15 | 2014-08-20 | 牛京伟 | Split type air purifier and filter module thereof |
| CN204678532U (en) * | 2015-05-27 | 2015-09-30 | 傅映霞 | A kind of cycle detection air purifier equipment |
| CN106123197A (en) * | 2016-08-22 | 2016-11-16 | 北京中山嘉业科技有限公司 | A kind of fresh air dehumidifier |
-
2017
- 2017-09-13 CN CN201710822768.0A patent/CN107726477A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995062A (en) * | 2010-11-09 | 2011-03-30 | 帝思迈环境设备（上海）有限公司 | Total heat recovery humidifying fresh-air heat pump |
| CN103994500A (en) * | 2014-05-15 | 2014-08-20 | 牛京伟 | Split type air purifier and filter module thereof |
| CN204678532U (en) * | 2015-05-27 | 2015-09-30 | 傅映霞 | A kind of cycle detection air purifier equipment |
| CN106123197A (en) * | 2016-08-22 | 2016-11-16 | 北京中山嘉业科技有限公司 | A kind of fresh air dehumidifier |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899046A (en) * | 2021-10-28 | 2022-01-07 | 宁波威霖住宅设施有限公司 | New fan and control method for sterilization of new fan type |
| CN113899046B (en) * | 2021-10-28 | 2024-01-12 | 宁波威霖住宅设施有限公司 | Fresh air fan and fresh air machine type sterilization control method |
| WO2024104103A1 (en) * | 2022-11-17 | 2024-05-23 | 江苏苏净集团有限公司 | Silica gel rotor and silica gel rotor dehumidifier |
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Application publication date: 20180223 |