CN110594934A - Indoor ventilation system based on window type ventilation fan - Google Patents
Indoor ventilation system based on window type ventilation fan Download PDFInfo
- Publication number
- CN110594934A CN110594934A CN201910781358.5A CN201910781358A CN110594934A CN 110594934 A CN110594934 A CN 110594934A CN 201910781358 A CN201910781358 A CN 201910781358A CN 110594934 A CN110594934 A CN 110594934A
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- CN
- China
- Prior art keywords
- ventilation
- fan
- window type
- control system
- indoor
- 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
- 238000009423 ventilation Methods 0.000 title claims abstract description 58
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims abstract description 24
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 13
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 13
- 238000004378 air conditioning Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims 2
- 241001330002 Bambuseae Species 0.000 claims 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 2
- 239000011425 bamboo Substances 0.000 claims 2
- 239000012535 impurity Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 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
- 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
-
- 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
- F24F6/00—Air-humidification, e.g. cooling by humidification
-
- 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
- F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of indoor ventilation, in particular to an indoor ventilation system based on a window type ventilation fan, which comprises the window type ventilation fan, a control system, a carbon dioxide concentration monitoring system, a humidity monitoring system and a wind gathering barrel, wherein the window type ventilation fan is electrically connected with the control system through an angle adjusting switch, the humidity monitoring system is electrically connected with the control system through a humidifying switch, the wind gathering barrel is provided with a ventilation hole, and the ventilation hole is electrically connected with the control system through an opening and closing switch; when the carbon dioxide concentration monitoring system monitors that the indoor carbon dioxide concentration is larger than 380ppm, the angle adjusting switch is turned on, the fan blades of the window type ventilating fan are adjusted to be in a horizontal state and kept for 10min, the ventilation is conducted to the maximum degree, the angle adjusting switch is turned off, and the fan blades are restored to be in a vertical state.
Description
Technical Field
The invention relates to the technical field of indoor ventilation, in particular to an indoor ventilation system based on a window type ventilation fan.
Background
Ventilation, also known as air exchange, is the process of feeding sufficient fresh air into the room space mechanically or naturally, and simultaneously discharging the dirty air which is not in compliance with the sanitary requirements, so that the indoor air meets the sanitary requirements and the requirements of the production process. The traditional equipment can not intelligently ventilate indoor air, so that the indoor air flow is reduced, and the living comfort is poor. Chinese patent CN 108488978A discloses an indoor ventilation system based on the Internet, which comprises a wall body, a ventilation device and a wind-gathering plate, wherein a wind shield and a wind sensor are arranged on the outer side of the wall body, the wind shield is connected with the wall body through the wind sensor, a gear is arranged on the outer side of the ventilation device, the gear is fixedly connected with the ventilation device through welding, and the wind-gathering plate is arranged on the right side of the ventilation device; the inside first wind channel and the second wind channel that are equipped with of ventilation unit, wind sensor pass through the deep bead and then obtain wind-force data to through the rotation of internet control motor, when wind-force reaches 3 grades, wind sensor drives ventilation unit through the internet and rotates, and then makes and gathers the aerofoil and collect wind, makes wind get into indoorly through the first wind channel in the ventilation unit, thereby reaches the purpose of ventilation, but also brings outdoor solid impurity into indoorly easily, reduces indoor cleanliness.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an indoor ventilation system based on a window type ventilation fan, which reasonably controls the air flow and humidity in a room, improves the indoor cleanliness and improves the living comfort.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides an indoor ventilation system based on window formula ventilating fan, includes window formula ventilating fan, control system, carbon dioxide concentration monitoring system, humidity monitoring system and gathers the dryer, the window formula ventilating fan passes through angle adjusting switch and control system electric connection, humidity monitoring system passes through humidification switch and control system electric connection, it is equipped with the ventilation hole to gather the dryer, the ventilation hole is through opening and close switch and control system electric connection.
Furthermore, the window type ventilating fan comprises a driving gear and an auxiliary gear, the auxiliary gear is connected with the driving gear through a transmission belt, the angle adjusting switch is opened, and the auxiliary gear and the driving gear rotate synchronously.
Furthermore, the humidity monitoring system comprises a humidity detector and a humidifier, the detection data of the humidity detector is lower than 40%, the control system opens a humidification switch, the humidifier is opened, water vapor is conveyed indoors, the detection number of the humidity detector is higher than 60%, the control system closes the humidification switch, and the humidifier is closed.
Further, gather the bellows and include left barrel and right barrel, left side barrel passes through spacing piece and screw and is connected with right barrel, and the air conditioner pipeline is located the central zone of left barrel and right barrel.
Further, left side barrel and right barrel all are equipped with filter, joint knot and draw-in groove towards indoor one side, the joint is detained and filter sliding connection, the shape and the draw-in groove that the joint was detained cooperate.
Furthermore, the thickness of joint knot is greater than the degree of depth of draw-in groove, the draw-in groove includes horizontal groove and vertical groove.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1) when the carbon dioxide concentration monitoring system monitors that the indoor carbon dioxide concentration is more than 380ppm, the angle adjusting switch is turned on, the fan blades of the window type ventilating fan are adjusted to be in a horizontal state and kept for 10min, the ventilation is performed to the maximum extent, the angle adjusting switch is turned off, and the fan blades are restored to be in a vertical state;
2) the through hole of the air-conditioning pipeline of the room is often larger than the diameter of the air-conditioning pipeline, the vacated part needs to be filled by means of auxiliary decoration materials, otherwise, the bug and mouse are easy to enter the room, the left cylinder and the right cylinder wrap the air-conditioning pipeline, the left cylinder and the right cylinder are plugged into the through hole of the air-conditioning pipeline from the outdoor direction to the indoor direction, then the screw is fixed, the through hole of the air-conditioning pipeline is filled through the left cylinder and the right cylinder, and the passage of the bug and mouse entering the room is reduced;
3) the filter plate blocks solid impurities outside the chamber from entering the chamber, the sliding clamping buckle is convenient for detaching the filter plate for cleaning, the filter plate is fixed, and the clamping buckle slides to the innermost end along the horizontal groove and slides downwards along the vertical groove; dismantle the filter, the joint is detained and is followed vertical groove lapse to the top, slides to the outermost end along the horizontal groove, and the filter is extracted to the joint knot in the company of taking and washs the operation of being convenient for.
Drawings
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is a schematic view of a window fan;
FIG. 3 is a schematic structural diagram of a wind gathering cylinder;
in the drawings, the reference numerals denote the following components:
1-window type ventilating fan, 2-air gathering barrel, 11-driving gear, 12-auxiliary gear, 13-transmission belt, 21-left barrel, 22-right barrel, 23-limiting piece, 24-screw, 25-filter plate, 26-clamping buckle and 27-clamping groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides an indoor ventilation system based on window formula ventilating fan, includes window formula ventilating fan 1, control system, carbon dioxide concentration monitoring system, humidity monitoring system and gathers dryer 2, and window formula ventilating fan 1 passes through angle adjusting switch and control system electric connection, and humidity monitoring system passes through humidification switch and control system electric connection, gathers dryer 2 and is equipped with the ventilation hole, and the ventilation hole is through opening and close switch and control system electric connection. The carbon dioxide concentration monitoring system monitors that the indoor carbon dioxide concentration is larger than 380ppm, the angle adjusting switch is turned on, the fan blades of the window type ventilating fan 1 are adjusted to be in a horizontal state and kept for 10min, the ventilation is performed to the maximum degree, the angle adjusting switch is turned off, the fan blades are adjusted to be in a vertical state, and the number of the opened ventilation holes is controlled through the opening and closing switch.
The window type ventilating fan 1 comprises a driving gear 11 and an auxiliary gear 12, the auxiliary gear 12 is connected with the driving gear 11 through a transmission belt 13, an angle adjusting switch is turned on, and the auxiliary gear 12 rotates synchronously with the driving gear 11 under the action of the transmission belt 13.
The humidity monitoring system comprises a humidity detector and a humidifier, detection data of the humidity detector is lower than 40%, the control system opens the humidification switch, the humidifier is opened and delivers water vapor to the indoor space, the detection number of the humidity detector is higher than 60%, the control system closes the humidification switch, and the humidifier is closed.
The air gathering cylinder 2 comprises a left cylinder body 21 and a right cylinder body 22, the left cylinder body 21 is connected with the right cylinder body 22 through a limiting piece 23 and a screw 24, and an air conditioning pipeline is located in the central area of the left cylinder body 21 and the central area of the right cylinder body 22. The air-conditioning pipeline through hole in room often is greater than the diameter of air-conditioning pipeline, and the part of vacating needs to be filled with the help of supplementary finishing material, otherwise leads to the worm and mouse to get into indoorly easily, and left barrel 21 and right barrel 22 parcel air-conditioning pipeline are followed outdoor to indoor direction and are packed into left barrel 21 and right barrel 22 in the air-conditioning pipeline through hole, and fixing screw 24 again fills the air-conditioning pipeline through hole through left barrel 21 and right barrel 22.
Wherein, left barrel 21 and right barrel 22 all are equipped with filter 25, joint knot 26 and draw-in groove 27 towards indoor one side, and joint knot 26 and filter 25 sliding connection, the shape and the draw-in groove 27 of joint knot 26 cooperate. The filter plate 25 blocks solid impurities from the outside into the room, and the slide fastener 26 facilitates the removal of the filter plate 25 for cleaning.
Wherein, the thickness of joint knot 26 is greater than the degree of depth of draw-in groove 27, and joint knot 26 is outstanding outside draw-in groove 27, the joint knot 26 of being convenient for, and draw-in groove 27 includes horizontal groove and vertical groove. The filter plate 25 is fixed, and the clamping buckle 26 slides to the innermost end along the horizontal groove and downwards along the vertical groove; dismantle filter 25, the joint is detained 26 and is followed vertical groove and slided to the top down, slides to the outermost end along the horizontal groove, and the filter 25 is extracted to take joint to detain 26 to wash.
The following are 1 specific examples of the present invention:
as shown in fig. 1-3, an indoor ventilation system based on a window type ventilation fan comprises a window type ventilation fan 1, a control system, a carbon dioxide concentration monitoring system, a humidity monitoring system and a wind gathering barrel 2, wherein the window type ventilation fan 1 comprises a driving gear 11 and an auxiliary gear 12, the auxiliary gear 12 is connected with the driving gear 11 through a transmission belt 13, the window type ventilation fan 1 is electrically connected with the control system through an angle adjusting switch, the humidity monitoring system is electrically connected with the control system through a humidifying switch, the humidity monitoring system comprises a humidity detector and a humidifier, the detection data of the humidity detector is lower than 40%, the control system opens the humidifying switch, the humidifier is opened and delivers water vapor to the indoor, the detection number of the humidity detector is higher than 60%, the control system closes the humidifying switch, the humidifier is closed, the wind gathering barrel 2 is provided with a ventilation hole, and the ventilation hole is electrically connected, gather dryer 2 and include left barrel 21 and right barrel 22, left barrel 21 is connected with right barrel 22 through spacing piece 23 and screw 24, the air conditioning pipeline is located left barrel 21 and right barrel 22's central zone, left barrel 21 and right barrel 22 all are equipped with filter 25 towards indoor one side, joint knot 26 and draw-in groove 27, joint knot 26 and filter 25 sliding connection, joint knot 26's shape and draw-in groove 27 cooperate, joint knot 26's thickness is greater than draw-in groove 27's degree of depth, joint knot 26 is outstanding outside draw-in groove 27, 26 are detained in the joint of being convenient for, draw-in groove 27 includes horizontal groove and vertical groove.
When the carbon dioxide concentration monitoring system monitors that the indoor carbon dioxide concentration is more than 380ppm, the angle adjusting switch is turned on, the fan blades of the window type ventilating fan 1 are adjusted to be in a horizontal state and kept for 10min, the ventilation is performed to the maximum degree, the angle adjusting switch is turned off, the auxiliary gear 12 rotates synchronously with the driving gear 11 under the action of the transmission belt 13, and the fan blades are adjusted to be in a vertical state; the humidity monitoring system controls the indoor humidity to be 40-60%, and the human body is in a comfortable state between the humidity; the left cylinder 21 and the right cylinder 22 wrap the air-conditioning pipeline, the left cylinder 21 and the right cylinder 22 are plugged into the through hole of the air-conditioning pipeline from the outdoor direction to the indoor direction, then the screw 24 is fixed, and the through hole of the air-conditioning pipeline is filled through the left cylinder 21 and the right cylinder 22; the clamping buckle 26 slides to the innermost end along the horizontal groove and slides downwards along the vertical groove, so that the filter plate 25 is fixed conveniently; the clamping buckle 26 slides downwards along the vertical groove to the topmost end, slides to the outermost end along the horizontal groove, and the filtering plate 25 is pulled out to be cleaned together with the clamping buckle 26.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides an indoor ventilation system based on window formula ventilating fan, its characterized in that, includes window formula ventilating fan (1), control system, carbon dioxide concentration monitoring system, humidity monitoring system and gathers wind section of thick bamboo (2), window formula ventilating fan (1) is through angle modulation switch and control system electric connection, humidity monitoring system passes through humidification switch and control system electric connection, it is equipped with the ventilation hole to gather wind section of thick bamboo (2), the ventilation hole is through opening and close switch and control system electric connection.
2. The indoor ventilation system based on the window type ventilation fan as claimed in claim 1, wherein the window type ventilation fan (1) comprises a driving gear (11) and an auxiliary gear (12), the auxiliary gear (12) is connected with the driving gear (11) through a transmission belt (13), an angle adjusting switch is turned on, and the auxiliary gear (12) and the driving gear (11) rotate synchronously.
3. The indoor ventilation system based on the window type ventilation fan as claimed in claim 1, wherein the humidity monitoring system comprises a humidity detector and a humidifier, the detection data of the humidity detector is lower than 40%, the control system opens a humidifying switch, the humidifier is opened, water vapor is delivered into the room, the detection number of the humidity detector is higher than 60%, the control system closes the humidifying switch, and the humidifier is closed.
4. The indoor ventilation system based on the window type ventilation fan as claimed in claim 1, wherein the wind gathering cylinder (2) comprises a left cylinder (21) and a right cylinder (22), the left cylinder (21) is connected with the right cylinder (22) through a limiting plate (23) and a screw (24), and an air conditioning duct is located in the central area of the left cylinder (21) and the right cylinder (22).
5. The indoor ventilation system based on the window type ventilation fan as claimed in claim 4, wherein the left cylinder (21) and the right cylinder (22) are respectively provided with a filter plate (25), a clamping buckle (26) and a clamping groove (27) on the surface facing indoors, the clamping buckle (26) is slidably connected with the filter plate (25), and the clamping buckle (26) is matched with the clamping groove (27) in shape.
6. The indoor ventilation system based on the window type ventilation fan as claimed in claim 5, wherein the thickness of the clip button (26) is larger than the depth of the clip groove (27), and the clip groove (27) comprises a horizontal groove and a vertical groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910781358.5A CN110594934A (en) | 2019-08-23 | 2019-08-23 | Indoor ventilation system based on window type ventilation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910781358.5A CN110594934A (en) | 2019-08-23 | 2019-08-23 | Indoor ventilation system based on window type ventilation fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110594934A true CN110594934A (en) | 2019-12-20 |
Family
ID=68855532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910781358.5A Pending CN110594934A (en) | 2019-08-23 | 2019-08-23 | Indoor ventilation system based on window type ventilation fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110594934A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11294841A (en) * | 1998-04-15 | 1999-10-29 | Matsushita Seiko Co Ltd | Air supply/exhaust grill for bathroom heating, ventilating, and drying unit |
| CN204612109U (en) * | 2015-05-08 | 2015-09-02 | 李秋芬 | The drive unit of air-conditioning pendulum leaf |
| CN204806614U (en) * | 2015-07-15 | 2015-11-25 | 博乐环境系统（苏州）有限公司 | A outside shroud for ventilate |
| CN106642491A (en) * | 2016-09-23 | 2017-05-10 | 天津必创科技有限责任公司 | Wall-mounted circular ventilation purifier |
| CN206919335U (en) * | 2017-06-01 | 2018-01-23 | 西安绿扳手环境科技有限公司 | Air-conditioning duct wall hole dedicated protective cover |
| CN207132459U (en) * | 2017-08-19 | 2018-03-23 | 北京晶海科技有限公司 | A kind of air-conditioning |
| CN207438765U (en) * | 2017-11-16 | 2018-06-01 | 张掖市地脉通矿产科研中心 | Attapulgite indoor air purifier |
| CN108266851A (en) * | 2018-03-20 | 2018-07-10 | 宋桦 | A kind of indoor ventilation system and method based on window draft fan |
| CN207763044U (en) * | 2017-12-15 | 2018-08-24 | 广州德能热源设备有限公司 | Heating unit with purification function |
| CN208779785U (en) * | 2018-04-21 | 2019-04-23 | 青岛海士豪塑胶有限公司 | A kind of Drawing-Core water nozzle of refrigerator |
-
2019
- 2019-08-23 CN CN201910781358.5A patent/CN110594934A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11294841A (en) * | 1998-04-15 | 1999-10-29 | Matsushita Seiko Co Ltd | Air supply/exhaust grill for bathroom heating, ventilating, and drying unit |
| CN204612109U (en) * | 2015-05-08 | 2015-09-02 | 李秋芬 | The drive unit of air-conditioning pendulum leaf |
| CN204806614U (en) * | 2015-07-15 | 2015-11-25 | 博乐环境系统（苏州）有限公司 | A outside shroud for ventilate |
| CN106642491A (en) * | 2016-09-23 | 2017-05-10 | 天津必创科技有限责任公司 | Wall-mounted circular ventilation purifier |
| CN206919335U (en) * | 2017-06-01 | 2018-01-23 | 西安绿扳手环境科技有限公司 | Air-conditioning duct wall hole dedicated protective cover |
| CN207132459U (en) * | 2017-08-19 | 2018-03-23 | 北京晶海科技有限公司 | A kind of air-conditioning |
| CN207438765U (en) * | 2017-11-16 | 2018-06-01 | 张掖市地脉通矿产科研中心 | Attapulgite indoor air purifier |
| CN207763044U (en) * | 2017-12-15 | 2018-08-24 | 广州德能热源设备有限公司 | Heating unit with purification function |
| CN108266851A (en) * | 2018-03-20 | 2018-07-10 | 宋桦 | A kind of indoor ventilation system and method based on window draft fan |
| CN208779785U (en) * | 2018-04-21 | 2019-04-23 | 青岛海士豪塑胶有限公司 | A kind of Drawing-Core water nozzle of refrigerator |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191220 |
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| RJ01 | Rejection of invention patent application after publication |