CN220892455U - Novel building ventilation device - Google Patents
Novel building ventilation device Download PDFInfo
- Publication number
- CN220892455U CN220892455U CN202322094022.6U CN202322094022U CN220892455U CN 220892455 U CN220892455 U CN 220892455U CN 202322094022 U CN202322094022 U CN 202322094022U CN 220892455 U CN220892455 U CN 220892455U
- Authority
- CN
- China
- Prior art keywords
- fixedly arranged
- shell
- air
- filter screen
- motor
- 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.)
- Active
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 38
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 32
- WTFXARWRTYJXII-UHFFFAOYSA-N iron(2+);iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+3].[Fe+3] WTFXARWRTYJXII-UHFFFAOYSA-N 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- Ventilation (AREA)
Abstract
The utility model relates to the technical field of building ventilation and air exchange, and discloses a novel building ventilation and air exchange device which comprises a filtering mechanism, a shell mechanism and an air exchange mechanism, wherein the filtering mechanism is positioned in the shell mechanism, the air exchange mechanism is positioned in the shell mechanism, the filtering mechanism comprises a multi-stage filter screen, clamping grooves and clamping blocks, the multi-stage filter screen is movably arranged at the inner end of the shell mechanism, the clamping grooves are fixedly arranged at the inner side of the shell mechanism, the clamping grooves are symmetrically distributed, and the clamping blocks are fixedly arranged at the outer end of the multi-stage filter screen and positioned at the inner end of the clamping grooves and are matched with the clamping grooves. This novel building ventilation device has installed filtering mechanism, defines the position of multistage filter screen through the casing, is convenient for filter the indoor air of air supply, defines the position of draw-in groove through the casing, and the position of fixture block is limited to multistage filter screen, draw-in groove, is convenient for with the fixture block card in the draw-in groove to fix multistage filter screen, convenient to detach multistage filter screen clears up.
Description
Technical Field
The utility model relates to the technical field of building ventilation, in particular to a novel building ventilation device.
Background
Building ventilation is divided into natural ventilation and mechanical ventilation, namely, indoor polluted air of a building is directly or purified and then is discharged outdoors, and fresh air is supplemented, so that the indoor air environment is kept to meet the sanitary standard;
The existing ventilation devices are divided into pipeline type and wall-mounted type, pipeline type fresh air is required to be ventilated and ventilated by installing a pipeline in a room, wall-mounted type fresh air is required to be perforated, and the pipeline type fresh air has good building ventilation function;
But pipeline formula new trend needs to occupy indoor a large amount of space installation pipeline, and ordinary house uses and can let indoor becoming pressed, and the clearance pipeline wastes time and energy, and wall-hanging new trend needs to be on the wall again and opens the hole, has destroyed wall body heat preservation ability, and the wall body can produce the heat bridge effect, leads to the wall body mould of opening department easily after a long time, consequently needs a section to install the ventilation device at the door jamb, and current ventilation device's filter screen is fixed mounting, and inconvenient dismantlement is cleared up, appears blocking easily after a long time, influences ventilation effect.
Disclosure of utility model
(One) solving the technical problems
The utility model aims to provide a novel building ventilation device, which aims to solve the problems that in the background technology, a large amount of indoor space is required to be occupied by pipeline type fresh air, the indoor space becomes depressed in common houses, the pipeline cleaning is time-consuming and labor-consuming, wall hanging type fresh air is required to be perforated on the wall, the heat insulation capacity of the wall is destroyed, the wall can generate a heat bridge effect, and the wall at the perforated position is easy to mold after a long time, so that a ventilation device capable of being installed on a door and window frame is required, a filter screen of the existing ventilation device is fixedly installed, the ventilation device is inconvenient to detach and clean, and the ventilation effect is affected due to the fact that the blockage is easy to occur after a long time.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a novel building ventilation device, includes filtering mechanism, housing mechanism and ventilation mechanism, filtering mechanism is located housing mechanism's inside, ventilation mechanism is located housing mechanism's inside, filtering mechanism includes multistage filter screen, draw-in groove and fixture block, multistage filter screen movable mounting is in housing mechanism's inner, the fixed inboard that sets up in housing mechanism of draw-in groove, the draw-in groove is symmetric distribution, fixture block fixed mounting is in multistage filter screen's outer end and is located the inner of draw-in groove, fixture block and draw-in groove looks adaptation.
Preferably, the shell mechanism comprises a shell, a partition plate, a hollowed metal plate, a hinge, a storage groove and a magnetic stone, wherein the shell is movably arranged at the outer end of the multi-stage filter screen, the partition plate is fixedly arranged at the inner end of the shell and positioned at the right end of the multi-stage filter screen, and the position of the partition plate is limited by the shell so as to conveniently isolate the shell into an air supply chamber and an air exhaust chamber.
Preferably, the hollow metal plate is movably mounted at the front end of the casing, the hinge is fixedly mounted at the outer end of the casing and located at the outer end of the hollow metal plate, the hinges are symmetrically distributed, the position of the hollow metal plate is limited by the casing, the position of the hinge is limited by the casing and the hollow metal plate, the hollow metal plate is convenient to ventilate, the hollow metal plate is convenient to rotate, the casing can be opened and closed, and therefore the internal components of the casing can be checked and protected.
Preferably, the storage groove is fixedly arranged at the front end of the casing, the storage grooves are symmetrically distributed, the magnetic stone is fixedly arranged at the inner end of the storage groove, the storage groove is limited by the casing, the magnetic stone is limited by the storage groove, the magnetic stone is convenient to fix, and therefore when the casing is closed, the magnetic stone adsorbs and fixes the hollow metal plate, and the hollow metal plate is prevented from shaking.
Preferably, the ventilation mechanism comprises a fixed plate, an air inlet, a first supporting table, a first motor, a first centrifugal fan, a sealing plate, an air outlet, a second supporting table, a second motor, a second centrifugal fan and an air exhaust groove, wherein the fixed plate is fixedly arranged at the rear end of the casing, the air inlet is fixedly arranged at the outer end of the fixed plate, the position of the fixed plate is limited by the casing, the air supply chamber is conveniently sealed, the position of the air inlet is limited by the fixed plate, and the air inlet of the specified air inlet is conveniently specified.
Preferably, the first supporting table is fixedly arranged at the inner end of the casing, the first motor is fixedly arranged at the top end of the first supporting table, the first centrifugal fan is fixedly arranged at the driving end of the first motor and positioned at the front end of the air inlet, the first supporting table is limited by the casing, the first supporting table is limited by the first motor, the first motor and the air inlet are limited by the first centrifugal fan, the first supporting table is conveniently fixed, the first motor is conveniently fixed and supported, the first centrifugal fan is conveniently driven by the first motor to suck air, and therefore fresh air is conveyed indoors.
Preferably, the sealing plate is fixedly arranged at the inner end of the shell and positioned at the right end of the isolation plate, the air outlet is fixedly arranged at the outer end of the sealing plate, the position of the sealing plate is limited by the shell, the air outlet chamber is conveniently sealed, the position of the air outlet is limited by the sealing plate, and the air outlet is conveniently designated for exhausting.
Compared with the prior art, the utility model has the beneficial effects that:
1. The novel building ventilation device is provided with the filtering mechanism, the position of the multi-stage filter screen is limited through the shell, air in the air supply chamber is convenient to filter, the position of the clamping groove is limited through the shell, the position of the clamping block is limited by the multi-stage filter screen and the clamping groove, and the clamping block is convenient to clamp in the clamping groove, so that the multi-stage filter screen is fixed, and the multi-stage filter screen is convenient to detach and clean;
2. The novel building ventilation device is provided with the shell mechanism, the shell is limited by the shell to form an air supply chamber and an air exhaust chamber, the shell is conveniently isolated into an air supply chamber and an air exhaust chamber, the shell is limited by the shell to form a hollow metal plate, the shell and the hollow metal plate are limited by a hinge to form a ventilation chamber, the hollow metal plate is conveniently rotated to open and close the shell, so that internal components of the shell can be inspected and protected, the shell is limited by the shell to form a storage groove, and the storage groove is limited by the magnetic stone to form a magnetic stone to be fixed, so that when the shell is closed, the magnetic stone adsorbs and fixes the hollow metal plate to avoid shaking of the hollow metal plate;
3. This novel building ventilation device has installed ventilation mechanism, the position of fixed plate is injectd through the casing, be convenient for seal the air supply room, the position of air intake is injectd through the fixed plate, be convenient for appoint the wind gap air inlet, the position of brace table one is injectd through the casing, the position of motor one is injectd to brace table one, motor one, the position of centrifugal fan one is injectd to the air intake, be convenient for fix and support brace table one, thereby it draws air to drive centrifugal fan one, thereby carry fresh air indoor, the position of closing plate is injectd through the casing, be convenient for seal the exhaust chamber, the position of air outlet is injectd through the closing plate, be convenient for appoint the wind gap and exhaust, the position of brace table two is injectd to the brace table two through the casing, be convenient for fix the brace table two, thereby fix and support motor two, thereby be convenient for motor two drive centrifugal fan two and take out the air, thereby take out indoor air, the position of exhaust groove is injectd through the fixed plate, be convenient for take out indoor air outdoor, thereby take out outdoor air, take out and take out.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic elevational view of the present utility model;
FIG. 3 is a schematic diagram of a front cross-sectional structure of the present utility model;
FIG. 4 is a schematic side sectional view of the present utility model;
FIG. 5 is a schematic side sectional view of the present utility model.
In the figure: 1. a filtering mechanism; 101. a multi-stage filter screen; 102. a clamping groove; 103. a clamping block; 2. a housing mechanism; 201. a housing; 202. a partition plate; 203. hollowed-out metal plates; 204. a hinge; 205. a storage groove; 206. a magnetic stone; 3. a ventilation mechanism; 301. a fixing plate; 302. an air inlet; 303. a first supporting table; 304. a first motor; 305. a centrifugal fan I; 306. a sealing plate; 307. an air outlet; 308. a second supporting table; 309. a second motor; 310. a centrifugal fan II; 311. an exhaust groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a novel building ventilation device, including filtering mechanism 1, housing mechanism 2 and ventilation mechanism 3, filtering mechanism 1 is located the inside of housing mechanism 2, ventilation mechanism 3 is located the inside of housing mechanism 2, filtering mechanism 1 includes multistage filter screen 101, draw-in groove 102 and fixture block 103, multistage filter screen 101 movable mounting is in the inner of housing mechanism 2, the fixed inboard that sets up in housing mechanism 2 of draw-in groove 102, draw-in groove 102 is symmetric distribution, fixture block 103 fixed mounting is in the outer end of multistage filter screen 101 and is located the inner of draw-in groove 102, fixture block 103 and draw-in groove 102 looks adaptation;
The shell mechanism 2 comprises a shell 201, a separation plate 202, a hollowed metal plate 203, a hinge 204, a placement groove 205 and a magnetic stone 206, wherein the shell 201 is movably arranged at the outer end of the multi-stage filter screen 101, the separation plate 202 is fixedly arranged at the inner end of the shell 201 and positioned at the right end of the multi-stage filter screen 101, the position of the separation plate 202 is limited by the shell 201, the shell 201 is conveniently separated into two air chambers for supplying air and exhausting air, the hollowed metal plate 203 is movably arranged at the front end of the shell 201, the hinge 204 is fixedly arranged at the outer end of the shell 201 and positioned at the outer end of the hollowed metal plate 203, the hinge 204 is symmetrically distributed, the position of the hollowed metal plate 203 is limited by the shell 201, the shell 201 and the hollowed metal plate 203 are conveniently ventilated, the shell 201 can be conveniently opened and closed by the hollowed metal plate 203, so that the inner components of the shell 201 can be checked and protected, the placement groove 205 is fixedly arranged at the front end of the shell 201, the placement groove 205 is symmetrically distributed, the magnetic stone 206 is fixedly arranged at the inner end of the placement groove 205, the shell 205 is conveniently limited by the shell 201, the position of the hollowed metal plate 203 is conveniently limited by the magnetic stone 206, and the hollowed metal plate 203 is conveniently adsorbed by the magnetic stone 203, and the hollowed metal plate 203 is conveniently and prevented from being adsorbed and closed by the fixed by the position 206;
The ventilation mechanism 3 comprises a fixed plate 301, an air inlet 302, a first supporting table 303, a first motor 304, a first centrifugal fan 305, a sealing plate 306, an air outlet 307, a second supporting table 308, a second motor 309, a second centrifugal fan 310 and an air exhaust groove 311, wherein the fixed plate 301 is fixedly arranged at the rear end of the casing 201, the air inlet 302 is fixedly arranged at the outer end of the fixed plate 301, the position of the fixed plate 301 is limited by the casing 201, the air supply chamber is conveniently sealed, the position of the air inlet 302 is limited by the fixed plate 301, the air inlet is conveniently designated, the first supporting table 303 is fixedly arranged at the inner end of the casing 201, the first motor 304 is fixedly arranged at the top end of the first supporting table 303, the first centrifugal fan 305 is fixedly arranged at the driving end of the first motor 304 and is positioned at the front end of the air inlet 302, the position of the first motor 304 is limited by the casing 201, the position of the first motor 304 is limited by the first supporting table 303, the first motor 304 and the air inlet 302 define the position of the first centrifugal fan 305, so that the first supporting table 303 is conveniently fixed, the first motor 304 is conveniently fixed and supported, the first motor 304 drives the first centrifugal fan 305 to suck air, fresh air is conveyed indoors, the sealing plate 306 is fixedly arranged at the inner end of the casing 201 and positioned at the right end of the isolation plate 202, the air outlet 307 is fixedly arranged at the outer end of the sealing plate 306, the sealing plate 306 is defined by the casing 201, the air outlet chamber is conveniently sealed, the air outlet 307 is defined by the sealing plate 306, the air outlet is conveniently specified, the second supporting table 308 is fixedly arranged at the inner end of the casing 201, the second motor 309 is fixedly arranged at the top end of the second supporting table 308, the second centrifugal fan 310 is fixedly arranged at the driving end of the second motor 309 and positioned at the rear end of the air outlet 307, the air outlet 311 is fixedly arranged at the outer end of the fixing plate 301, the air outlet 311 is equidistantly distributed, the cabinet 201 defines the position of the second supporting table 308, the second supporting table 308 defines the position of the second motor 309, the second motor 309 and the air outlet 307 define the position of the second centrifugal fan 310, so that the second supporting table 308 is conveniently fixed, the second motor 309 is conveniently fixed and supported, the second motor 309 conveniently drives the second centrifugal fan 310 to exhaust air, indoor air is conveniently extracted, the fixing plate 301 defines the position of the air exhaust groove 311, and air pumped into the air exhaust chamber is conveniently discharged to the outside, so that ventilation is performed.
Working principle: the cabinet 201 defines the position of the isolation plate 202, the cabinet 201 is conveniently isolated into an air supply chamber and an air exhaust chamber, the cabinet 201 defines the position of the hollowed-out metal plate 203, the cabinet 201 and the hollowed-out metal plate 203 define the position of the hinge 204, the hollowed-out metal plate 203 is conveniently ventilated, the hollowed-out metal plate 203 is conveniently rotated to open and close the cabinet 201, thereby the internal components of the cabinet 201 can be inspected and protected, the cabinet 201 defines the position of the storage groove 205, the storage groove 205 defines the position of the magnetic stone 206, the magnetic stone 206 is conveniently fixed, when the cabinet 201 is closed, the magnetic stone 206 adsorbs and fixes the hollowed-out metal plate 203, the hollowed-out metal plate 203 is prevented from shaking, the cabinet 201 defines the position of the fixing plate 301, the air supply chamber is conveniently sealed, the fixing plate 301 defines the position of the air inlet 302, the air inlet is conveniently designated, the cabinet 201 defines the position of the supporting table 303, the first supporting table 303 limits the position of the first motor 304, the first motor 304 and the first air inlet 302 limit the position of the first centrifugal fan 305, so that the first supporting table 303 is convenient to fix and support the first motor 304, the first motor 304 is convenient to drive the first centrifugal fan 305 to suck air, fresh air is conveyed indoors, the first casing 201 limits the position of the multi-stage filter screen 101, air in an air supply chamber is convenient to filter and then is conveyed indoors, the first casing 201 limits the position of the clamping groove 102, the multi-stage filter screen 101 and the clamping groove 102 limit the position of the clamping block 103, the clamping block 103 is convenient to clamp the clamping groove 102, the multi-stage filter screen 101 is convenient to detach and clean, the first casing 201 limits the position of the sealing plate 306, the air outlet chamber is convenient to seal, the sealing plate 306 limits the position of the air outlet 307, the air outlet is convenient to discharge, the second casing 201 limits the position of the supporting table 308, the second supporting table 308 defines the position of the second motor 309, the second motor 309 and the air outlet 307 define the position of the second centrifugal fan 310, so that the second supporting table 308 is conveniently fixed and supported, the second motor 309 is conveniently used for driving the second centrifugal fan 310 to exhaust air, indoor air is conveniently extracted, the fixing plate 301 defines the position of the air exhaust groove 311, and the air extracted into the air exhaust chamber is conveniently discharged to the outside, so that ventilation is performed.
Finally, it should be noted that the above description is only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and that the simple modification and equivalent substitution of the technical solution of the present utility model can be made by those skilled in the art without departing from the spirit and scope of the technical solution of the present utility model.
Claims (1)
1. The utility model provides a novel building ventilation device, includes filtering mechanism (1), housing mechanism (2) and ventilation mechanism (3), its characterized in that: the filtering mechanism (1) is positioned in the shell mechanism (2), the ventilation mechanism (3) is positioned in the shell mechanism (2), the filtering mechanism (1) comprises a multistage filter screen (101), a clamping groove (102) and a clamping block (103), the multistage filter screen (101) is movably mounted at the inner end of the shell mechanism (2), the clamping groove (102) is fixedly arranged at the inner side of the shell mechanism (2), the clamping groove (102) is symmetrically distributed, the clamping block (103) is fixedly mounted at the outer end of the multistage filter screen (101) and is positioned at the inner end of the clamping groove (102), the clamping block (103) is matched with the clamping groove (102), the shell mechanism (2) comprises a shell (201), a partition plate (202), a hollowed metal plate (203), a hinge (204), a storage groove (205) and a magnetic stone (206), the partition plate (202) is fixedly mounted at the inner end of the shell (201) and is positioned at the right end of the shell mechanism (101), the hollowed metal plate (203) is symmetrically mounted at the outer end of the shell (201) and is fixedly mounted at the front end of the hinge (204), the article placing groove (205) is fixedly arranged at the front end of the machine shell (201), the article placing groove (205) is symmetrically distributed, the magnetic stone (206) is fixedly arranged at the inner end of the article placing groove (205), the air exchanging mechanism (3) comprises a fixed plate (301), an air inlet (302), a first supporting table (303), a first motor (304), a first centrifugal fan (305), a sealing plate (306), an air outlet (307), a second supporting table (308), a second motor (309), a second centrifugal fan (310) and an air exhaust groove (311), the fixed plate (301) is fixedly arranged at the rear end of the machine shell (201), the air inlet (302) is fixedly arranged at the outer end of the fixed plate (301), the first supporting table (303) is fixedly arranged at the inner end of the machine shell (201), the first motor (304) is fixedly arranged at the top end of the supporting table (303), the first centrifugal fan (305) is fixedly arranged at the driving end of the first motor (304) and is positioned at the front end of the air inlet (302), the sealing plate (306) is fixedly arranged at the inner end of the machine shell (201) and the inner end of the isolating plate (201) is fixedly arranged at the outer end of the right end (307) of the machine shell (201), the motor II (309) is fixedly arranged at the top end of the supporting table II (308), the centrifugal fan II (310) is fixedly arranged at the transmission end of the motor II (309) and is positioned at the rear end of the air outlet (307), the air exhaust grooves (311) are fixedly arranged at the outer end of the fixing plate (301), and the air exhaust grooves (311) are distributed at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322094022.6U CN220892455U (en) | 2023-08-05 | 2023-08-05 | Novel building ventilation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322094022.6U CN220892455U (en) | 2023-08-05 | 2023-08-05 | Novel building ventilation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220892455U true CN220892455U (en) | 2024-05-03 |
Family
ID=90841546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322094022.6U Active CN220892455U (en) | 2023-08-05 | 2023-08-05 | Novel building ventilation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220892455U (en) |
-
2023
- 2023-08-05 CN CN202322094022.6U patent/CN220892455U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220892455U (en) | Novel building ventilation device | |
| CN201199063Y (en) | Separated sound deadening type fume exhausting device with drawable fan | |
| CN208205324U (en) | Cabinet is used in the bidirectional flow building of new blower | |
| CN213577902U (en) | A new trend device for installing on integrative window fast | |
| CN213334788U (en) | Integrative window of new trend | |
| CN210769577U (en) | Cabinet type centrifugal fan | |
| CN218542074U (en) | Ventilation sound insulation window | |
| CN112484208A (en) | Integrated ventilation formula unit curtain wall | |
| CN212680364U (en) | Clean factory building environment clearance dust remover | |
| CN212162538U (en) | Ventilation device for electric appliance cabinet | |
| CN219243812U (en) | Heat exchange fresh air ventilator | |
| CN221095720U (en) | Fireproof exhaust passage with composite inner frame for residential kitchen and bathroom | |
| CN218065234U (en) | Efficient filtering end household fresh air system | |
| CN219103270U (en) | Fresh air system window | |
| CN220269566U (en) | Energy-saving ventilation device for building | |
| CN218179143U (en) | Warm ventilation unit that leads to of building | |
| CN217584764U (en) | Window type fresh air system | |
| CN213234035U (en) | Integrated polyurethane roof double-side ventilation window | |
| CN218154503U (en) | Indoor unit and air conditioner | |
| CN216204016U (en) | New fan | |
| CN217445609U (en) | Electric frequency conversion cabinet convenient to heat dissipation | |
| CN219713584U (en) | Environment-friendly and energy-saving fresh air device | |
| CN215175878U (en) | Air conditioner air-out structure | |
| CN215934247U (en) | Electrical control cabinet for electromechanical engineering | |
| CN201013637Y (en) | Ventitation fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |