CN112696383A - Worm wheel fan and bathroom heater - Google Patents
Worm wheel fan and bathroom heater Download PDFInfo
- Publication number
- CN112696383A CN112696383A CN202011593448.0A CN202011593448A CN112696383A CN 112696383 A CN112696383 A CN 112696383A CN 202011593448 A CN202011593448 A CN 202011593448A CN 112696383 A CN112696383 A CN 112696383A
- Authority
- CN
- China
- Prior art keywords
- air duct
- volute
- worm
- plate
- partition
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/422—Discharge tongues
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
-
- 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
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a worm gear fan, which comprises a volute and a centrifugal wind wheel, wherein the volute comprises a volute bottom plate, a volute top plate and a volute side plate which jointly enclose an air duct, the volute top plate is provided with an air duct inlet, and the volute side plate is provided with an air duct outlet; the centrifugal wind wheel is arranged in the air duct and is positioned at the inlet of the air duct; the volute also comprises a partition plate arranged on the volute bottom plate and the volute top plate, and the partition plate extends along the air channel and divides the air channel into an inner air channel and an outer air channel. Increase the baffle in worm wheel fan's the wind channel and separate the wind channel for interior wind channel and outer wind channel, reduce terminal vortex intensity in wind channel and vortex area influence scope, promote wind channel export air current degree of consistency, promote user experience. The invention further provides a bathroom heater with the worm gear fan.
Description
Technical Field
The invention relates to the technical field of bath heaters, in particular to a worm gear fan and a bath heater.
Background
Along with the improvement of the living standard of people, the demand on ventilation equipment is more and more increased, and the bathroom heater is more important ventilation equipment. The bathroom heater uses centrifugal wind wheel air supply, improves the volume of delivered air, often brings the increased harmful result of noise, and it has always been a technological problem to reduce the noise influence.
Disclosure of Invention
The invention aims to provide a worm gear fan and a bathroom heater capable of reducing noise.
In order to achieve the purpose, the invention adopts the following technical scheme:
a worm gear fan comprises a volute and a centrifugal wind wheel, wherein the volute comprises a volute bottom plate, a volute top plate and a volute side plate which jointly enclose an air duct, the volute top plate is provided with an air duct inlet, and the volute side plate is provided with an air duct outlet; the centrifugal wind wheel is arranged in the air duct and is positioned at the air duct inlet; the volute also comprises a partition plate arranged on the volute bottom plate and the volute top plate, and the partition plate extends along the air duct and divides the air duct into an inner air duct and an outer air duct.
The volute side plate is provided with a volute tongue, the inner air duct is close to the volute tongue, and the outer air duct is far away from the volute tongue.
The end point of the partition board close to the air duct inlet is a partition board starting part, and the end point of the partition board close to the air duct outlet is a partition board ending part; the baffle is gradually far away from the centrifugal wind wheel from the baffle starting part to the air duct terminal point.
And a fan-shaped angle formed by a connecting line from the starting part of the clapboard to the rotation center of the centrifugal wind wheel and a connecting line from the volute tongue to the rotation center of the centrifugal wind wheel is 160-180 degrees.
Wherein the ratio of the distance H1 between the baffle starting part and the centrifugal wind wheel to the distance H2 between the volute tongue and the centrifugal wind wheel is 1 to 1.
Wherein the partition termination is spaced from the air duct outlet.
The worm bottom plate, the worm side plate and the partition plate are integrally formed; the worm top plate is detachably connected with the worm side plate and the partition plate respectively.
The centrifugal wind wheel is characterized by further comprising a motor, wherein the motor is installed on the volute bottom plate and is connected with the centrifugal wind wheel.
A bathroom heater comprises a box body and the worm wheel fan.
The box body comprises a bottom box with an opening and a cover plate covering the bottom box, the worm bottom plate is embedded in the bottom box, the worm top plate is embedded in the cover plate, and the worm side plate and the partition plate are both arranged in the bottom box; the apron is equipped with the mouth of blowing, the end box still is equipped with the air exit, the air exit with the mouth of blowing connects in parallel and sets up and all with wind channel export selectivity intercommunication.
The air outlet is communicated with the air outlet and the air blowing port through the air outlet.
The switching valve comprises a valve seat, a valve swinging blade and a valve motor, wherein the valve swinging blade is pivoted on the valve seat, and the valve motor is connected with the valve swinging blade and drives the valve swinging blade to rotate to a first station state or a second station state.
Wherein, the air blowing opening is provided with an electric heating element.
Compared with the prior art, the invention has the following advantages:
according to the worm gear fan, the partition plate is additionally arranged in the air duct to divide the air duct into the inner air duct and the outer air duct, so that the vortex intensity at the tail end of the air duct and the influence range of a vortex area are reduced, the uniformity of air flow at the outlet of the air duct is improved, and the user experience is improved.
Drawings
FIG. 1 is a top view of a preferred embodiment of a worm gear blower of the present invention.
Fig. 2 is a top view (exploded) of a preferred embodiment of a worm gear fan of the present invention.
Fig. 3 is a top view of a preferred embodiment of a worm gear fan of the present invention (omitting the worm top plate).
Fig. 4 is an exploded view of a preferred embodiment of a bathroom warmer of the present invention.
FIG. 5 is a top view of a preferred embodiment of a bathroom warmer of the present invention.
Fig. 6 is a cross-sectional view taken along a-a in fig. 5.
Fig. 7 is a cross-sectional view taken along line B-B of fig. 5.
Fig. 8 is a cross-sectional view taken along line B-B of fig. 5.
In the figure, 100: a worm gear fan; 10: a volute; 11: an air duct; 111: an inner air duct; 112: an outer air duct; 12: a worm bottom plate; 13: a snail top plate; 131: an air duct inlet; 14: a volute side plate; 141: an air duct outlet; 15: a partition plate; 151: a separator start portion; 152: a separator termination portion; 16: a volute tongue; 20: a centrifugal wind wheel; 30: a motor; 200: a box body; 210: a bottom case; 211: an air outlet; 220: a cover plate; 221: an air blowing port; 230: switching valves; 231: a valve seat; 232: a valve swing blade; 233: a valve motor; 240: an electric heating element; 250: an air guide part.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, which illustrate a preferred embodiment of a worm fan, a worm fan 100 includes a volute 10 and a centrifugal wind wheel 20, the volute 10 includes a volute bottom plate 12, a volute top plate 13 and a volute side plate 14, which together define an air duct 11, and referring to the structure of the worm fan 100 in fig. 4, the volute top plate 13 is provided with an air duct inlet 131, and the volute side plate 14 is provided with an air duct outlet 141. Centrifugal wind wheel 20 is disposed in wind tunnel 11 and located at wind tunnel inlet 131. The volute 10 further comprises a partition 15 arranged on the volute bottom plate 12 and the volute top plate 13, and the partition 15 extends along the air duct 11 and divides the air duct 11 into an inner air duct 111 and an outer air duct 112.
The partition plate 15 is additionally arranged in the air duct 11 of the worm gear fan 100 to divide the air duct 11 into the inner air duct 111 and the outer air duct 112, so that the vortex intensity and the vortex area influence range at the tail end of the air duct 11 are reduced, the airflow uniformity of the air duct outlet 131 is improved, and the user experience is improved.
The volute side plate 14 is provided with a volute tongue 16, wherein the inner air duct 111 is close to the volute tongue 16, and the outer air duct 112 is far away from the volute tongue 16. The wind passing through the outer duct 112 does not strike the volute tongue 16, thereby reducing noise.
Further, the end point of the partition 15 close to the air duct inlet 131 is a partition initial portion 151, the end point of the partition 15 close to the air duct outlet 141 is a partition final portion 152, and the partition 15 gradually gets away from the centrifugal wind wheel 20 from the partition initial portion 151 to the partition final portion 152. As shown, the partitions 15 are gradually smoothed away from the centrifugal rotor in a parabolic curve.
Furthermore, a fan angle formed by a connecting line L1 from the baffle starting part 151 to the rotation center of the centrifugal rotor 20 and a connecting line L2 from the volute tongue 16 to the rotation center of the centrifugal rotor 20 is 160-180 degrees, and the fan angle formed by a connecting line L1 and a connecting line L2 is preferably 160 degrees, 170 degrees or 180 degrees. Can better reduce the vibrations that the during operation produced, it is effective to fall the noise. When the fan angle formed by the connecting line L1 and the connecting line L2 is 180 degrees, namely the volute tongue 16 and the starting part 151 of the clapboard are symmetrical along the rotation center, the damping and noise reducing effects are best.
Further, the ratio of the distance H1 between the baffle initial part 151 and the centrifugal rotor 20 to the distance H2 between the volute tongue 16 and the centrifugal rotor 20 is 1 to 1.
Further, the partition stop 152 is spaced from the duct outlet 141. The partition 15 does not extend to the air duct outlet 141, and the partition terminating portion 152 forms a gap with the air duct outlet 141, so that the air outlet at the air duct outlet 141 can be more uniform.
Preferably, the worm bottom plate 12, the worm side plate 14 and the partition plate 15 are integrally formed, the side plate and the partition plate are formed by extending from the bottom plate 12 along the height direction, and the worm bottom plate 12, the worm side plate 14 and the partition plate 15 can be integrally formed by plastic or iron. The worm top plate 13 is detachably connected or welded with the worm side plate 14 and the partition plate 15 respectively.
The worm-gear fan 1 further comprises a motor 30, the motor 20 is mounted on the worm bottom plate 12 and connected with the centrifugal wind wheel 20, and the motor 20 is used for driving the centrifugal wind wheel 20 to rotate so as to realize air supply.
As shown in fig. 4 to 8, there is shown a preferred embodiment of a bathroom warmer, comprising a box body 200 and the worm gear fan 100 of the above embodiment. The worm gear fan 100 is installed in the case 200. The partition plate 15 is additionally arranged in the air duct 11 of the worm wheel fan adopted by the bathroom heater, so that the air duct 11 is divided into the inner air duct 111 and the outer air duct 112, the terminal vortex intensity and the vortex area influence range of the air duct 11 are reduced, the airflow uniformity of the air duct outlet 131 is improved, and the user experience is improved.
The box body 200 comprises a bottom box 210 with an opening and a cover plate 220 covering the bottom box 210, the worm bottom plate 12 is embedded in the bottom box 210, the worm top plate 13 is embedded in the cover plate 220, and the worm side plate 14 and the partition plate 15 are both arranged in the bottom box 210; the cover plate 220 is provided with an air blowing port 221, the bottom box 210 is further provided with an air outlet 211, and the air outlet 211 and the air blowing port 221 are arranged in parallel and are selectively communicated with the air duct outlet 141. The worm bottom plate 12 is constructed on the bottom plate of the bottom box 210, and the bottom box 210 is of an integral structure; the worm top plate 13 is constructed on the cover plate 220.
The bathroom heater also comprises a switching valve 230, wherein the switching valve 230 is arranged at the air duct outlet 141 and used for switching the communication between the air duct outlet 141 and the air outlet 211 and the air blowing port 221. The switching valve 230 includes a valve seat 231, a valve swing vane 232 and a valve motor 233, the valve swing vane 232 is pivotally mounted on the valve seat 231, and the valve motor 233 is connected to the valve swing vane 232 to drive the valve swing vane 232 to rotate to a first station state or a second station state. Referring to fig. 7, the valve swing vane 232 is in a first operating state, in which the air from the air duct outlet 141 is discharged from the air outlet 221; referring to fig. 8, the valve swing vane 232 is in the second operating state, and at this time, the air from the air duct outlet 141 is exhausted from the air outlet 211.
The air blowing port 221 is provided with an electric heating element 240, and the electric heating element 240 is preferably a PTC electric heating element. The electric heating element 240 serves to heat the air blown out from the air blowing port 221.
The air outlet 211 is connected with an air guiding part 250, and the air guiding part 250 is conveniently connected with an external pipeline.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (13)
1. A worm gear fan comprises a volute and a centrifugal wind wheel, wherein the volute comprises a volute bottom plate, a volute top plate and a volute side plate which jointly enclose an air duct, the volute top plate is provided with an air duct inlet, and the volute side plate is provided with an air duct outlet; the centrifugal wind wheel is arranged in the air duct and is positioned at the air duct inlet; the volute is characterized by further comprising a partition plate arranged on the volute bottom plate and the volute top plate, and the partition plate extends along the air duct and divides the air duct into an inner air duct and an outer air duct.
2. The worm-gear fan of claim 1 wherein the worm side plate is provided with a worm tongue, wherein the inner air duct is proximate to the worm tongue and the outer air duct is distal to the worm tongue.
3. The worm-gear fan as recited in claim 2, wherein the end of the partition near the air duct inlet is a partition start portion, and the end of the partition near the air duct outlet is a partition end portion; the baffle is gradually far away from the centrifugal wind wheel from the baffle starting part to the air duct terminal point.
4. The worm-gear wind turbine as claimed in claim 3, wherein a fan angle formed by a connecting line from the starting part of the partition plate to the rotation center of the centrifugal wind wheel and a connecting line from the volute tongue to the rotation center of the centrifugal wind wheel is 160-180 degrees.
5. The turbofan of claim 3 wherein a ratio of a distance H1 between the diaphragm start and the centrifugal rotor to a distance H2 between the volute tongue and the centrifugal rotor is 1 to 1.
6. The worm gear fan of claim 3, wherein the partition termination is spaced from the duct outlet.
7. The worm-gear fan as recited in claim 1, wherein the worm bottom plate, the worm side plate and the partition plate are integrally formed; the worm top plate is detachably connected with the worm side plate and the partition plate respectively.
8. The worm-gear wind turbine as recited in claim 1, further comprising a motor mounted to the worm bedplate and connected to the centrifugal wind wheel.
9. A bathroom heater comprising a box and a worm gear fan as claimed in any one of claims 1 to 8.
10. The super bath according to claim 9, wherein the box body comprises a bottom box with an opening and a cover plate covering the bottom box, the worm bottom plate is embedded in the bottom box, the worm top plate is embedded in the cover plate, and the worm side plate and the partition plate are both arranged in the bottom box; the apron is equipped with the mouth of blowing, the end box still is equipped with the air exit, the air exit with the mouth of blowing connects in parallel and sets up and all with wind channel export selectivity intercommunication.
11. The super bath according to claim 10, further comprising a switching valve disposed at the air duct outlet for switching communication between the air duct outlet and the air blowing port.
12. The super bath according to claim 11, wherein the switching valve comprises a valve seat, a valve swing blade and a valve motor, the valve swing blade is pivotally mounted on the valve seat, and the valve motor is connected with the valve swing blade to drive the valve swing blade to rotate to a first station state or a second station state.
13. The super bath according to claim 9, wherein the air blowing port is provided with an electric heating element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011593448.0A CN112696383A (en) | 2020-12-29 | 2020-12-29 | Worm wheel fan and bathroom heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011593448.0A CN112696383A (en) | 2020-12-29 | 2020-12-29 | Worm wheel fan and bathroom heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112696383A true CN112696383A (en) | 2021-04-23 |
Family
ID=75511803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011593448.0A Pending CN112696383A (en) | 2020-12-29 | 2020-12-29 | Worm wheel fan and bathroom heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112696383A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116447634A (en) * | 2022-12-02 | 2023-07-18 | 姚哲凡 | Annular warmer structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000073996A (en) * | 1998-08-27 | 2000-03-07 | Ebara Corp | Blower |
| JP2001295791A (en) * | 2000-04-13 | 2001-10-26 | Ebara Corp | Volute pump |
| CN1892046A (en) * | 2005-07-07 | 2007-01-10 | 上海东方泵业(集团)有限公司 | Dual-scroll pump |
| CN1952408A (en) * | 2005-10-20 | 2007-04-25 | 宣伯民 | Centrifugal blower having volute chamber with subchannel |
| CN102213236A (en) * | 2010-04-09 | 2011-10-12 | 富准精密工业(深圳)有限公司 | Centrifugal fan |
| CN112050278A (en) * | 2020-09-28 | 2020-12-08 | 惠州市瑞亿科技有限公司 | Bathroom heater air-out is taken a breath and is switched structure and novel bathroom heater of double fan |
| CN215486818U (en) * | 2020-12-29 | 2022-01-11 | 欧普照明股份有限公司 | Worm wheel fan and bathroom heater |
-
2020
- 2020-12-29 CN CN202011593448.0A patent/CN112696383A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000073996A (en) * | 1998-08-27 | 2000-03-07 | Ebara Corp | Blower |
| JP2001295791A (en) * | 2000-04-13 | 2001-10-26 | Ebara Corp | Volute pump |
| CN1892046A (en) * | 2005-07-07 | 2007-01-10 | 上海东方泵业(集团)有限公司 | Dual-scroll pump |
| CN1952408A (en) * | 2005-10-20 | 2007-04-25 | 宣伯民 | Centrifugal blower having volute chamber with subchannel |
| CN102213236A (en) * | 2010-04-09 | 2011-10-12 | 富准精密工业(深圳)有限公司 | Centrifugal fan |
| CN112050278A (en) * | 2020-09-28 | 2020-12-08 | 惠州市瑞亿科技有限公司 | Bathroom heater air-out is taken a breath and is switched structure and novel bathroom heater of double fan |
| CN215486818U (en) * | 2020-12-29 | 2022-01-11 | 欧普照明股份有限公司 | Worm wheel fan and bathroom heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116447634A (en) * | 2022-12-02 | 2023-07-18 | 姚哲凡 | Annular warmer structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110439860B (en) | A volute structure of a centrifugal fan | |
| CN105135527B (en) | Air conditioner indoor unit and control method thereof | |
| CN109681947B (en) | 360° all-round heater | |
| CN110439862A (en) | A kind of volute structure of centrifugal blower | |
| JP2019019762A (en) | Blower module | |
| WO2021223392A1 (en) | Floor standing air conditioner indoor unit | |
| WO2022105940A1 (en) | Wall-mounted air conditioner indoor unit and air distribution structure thereof | |
| JP3921832B2 (en) | Centrifugal blower | |
| CN215486818U (en) | Worm wheel fan and bathroom heater | |
| CN112696383A (en) | Worm wheel fan and bathroom heater | |
| JP2001510886A (en) | Household appliances | |
| CN208296249U (en) | Housing unit, air conditioner room unit and the air conditioner of air conditioner room unit | |
| CN217471790U (en) | Improve heat radiation structure's integral type broken wall machine | |
| CN116278622A (en) | An air-conditioning air intake system and vehicle | |
| CN218495109U (en) | Fresh air assembly and fresh air conditioner | |
| CN220520913U (en) | Clothes treating apparatus | |
| CN214928843U (en) | Flow guide structure suitable for internal-folding type electric blowing surface air port | |
| CN217685223U (en) | A wind channel subassembly and integrated kitchen for integrated kitchen | |
| CN223089588U (en) | Air supply structure and electric water heater | |
| CN211950924U (en) | Air supply device | |
| CN116808372A (en) | Integrated respirator | |
| CN222836964U (en) | Bathroom heater | |
| CN212615442U (en) | High-speed centrifugal fan and air speed adjusting structure thereof | |
| CN109083855A (en) | A kind of blower fan structure and air conditioner | |
| CN222187095U (en) | A bathroom heater structure with middle air outlet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210423 |
|
| WD01 | Invention patent application deemed withdrawn after publication |