CN114810640A - High-speed direct-drive fan with radial subdivision structure - Google Patents
High-speed direct-drive fan with radial subdivision structure Download PDFInfo
- Publication number
- CN114810640A CN114810640A CN202210627608.1A CN202210627608A CN114810640A CN 114810640 A CN114810640 A CN 114810640A CN 202210627608 A CN202210627608 A CN 202210627608A CN 114810640 A CN114810640 A CN 114810640A
- Authority
- CN
- China
- Prior art keywords
- volute
- fan
- impeller
- motor
- speed direct
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 10
- 238000011900 installation process Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009360 aquaculture Methods 0.000 description 2
- 244000144974 aquaculture Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000030279 gene silencing Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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
- 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
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a high-speed direct-drive fan with a radial subdivision structure, which comprises a motor, a left volute, a right volute and an impeller, wherein the left volute and the right volute are detachably connected, a cavity for accommodating the impeller is formed between the left volute and the right volute, the left volute is connected with the motor through a flange plate, the center line of the left volute and the center line of the motor are on the same straight line, an output shaft of the motor is connected with the impeller, the right volute is provided with an air inlet and an air outlet, the right volute is provided with an impeller cover, a fan flow passage is formed between the impeller cover and the right volute, the fan flow passage is communicated with the air outlet, and the impeller cover is communicated with the air inlet. According to the invention, the flange plate, the volute and the impeller cover are integrated and combined into the left volute and the right volute, so that the weight of the fan with the same model is reduced, the overall radial size of the fan is greatly reduced while the performance design requirement of the fan is met, the weight of the fan is further reduced, the fan is more suitable for being used in a narrow space of a user in a use environment, and the production cost is correspondingly reduced.
Description
Technical Field
The invention relates to the technical field of direct-drive fans, in particular to a high-speed direct-drive fan with a radial subdivision structure.
Background
The high-speed direct-drive fan is widely applied to the industries of aquaculture, sewage treatment and the like, and the application scene of the high-speed direct-drive fan requires that the fan has the characteristics of high efficiency, environmental protection, energy conservation, safe and stable operation, easy weight transportation and the like.
Because the high-speed direct-drive fan is used in the aquaculture industry, users are basically individual farmers, the common high-speed direct-drive fan is heavy in weight and large in size, large hoisting facilities such as traveling cranes are lacked in the use site of the individual farmers, the fan is inconvenient to carry, in addition, due to assembly errors of the volute and the impeller cover, the matching of the impeller cover and the impeller is difficult to control, multiple times of vehicle repairing and processing are needed for the molded line part matched with the impeller cover during installation, the installation process is quite repeated, the precision cannot be guaranteed, meanwhile, the production cost of the traditional high-speed direct-drive fan is high, the selling unit price is overhigh, fans of different models are needed for different flow channel sections, and the early cost burden of the individual farmers is increased.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-speed direct-drive fan with a radial subdivision structure.
The invention provides a high-speed direct-drive fan with a radial subdivision structure, which adopts the following technical scheme:
a high-speed direct-drive fan with a radial subdivision structure comprises a motor, a left volute, a right volute and an impeller;
the left volute and the right volute are detachably connected, a cavity for accommodating the impeller is formed between the left volute and the right volute, the left volute is connected with the motor through a flange plate, and a matching surface is arranged between the left volute and the motor, so that the center line of the left volute and the center line of the motor are on the same straight line;
an output shaft of the motor is connected with the impeller;
the right volute is provided with an air inlet and an air outlet, the right volute is provided with an impeller cover, a fan flow channel is formed between the impeller cover and the right volute and is communicated with the air outlet, and the impeller cover is communicated with the air inlet.
By adopting the technical scheme, through integrating the ring flange, spiral case and impeller lid, merge into left spiral case and right spiral case two parts, greatly alleviateed same model fan weight, manufacturing cost also correspondingly reduces simultaneously, the structure is simpler, spare part is small in quantity, be convenient for installation and maintenance, compact structure, the aesthetic property of fan has been improved, fan product quality has been greatly improved, but to the different model fans of similar runner cross-section impeller width difference, can only change left spiral case, it is the same to the impeller width, but the different model fans of runner cross-section difference, only need to change right spiral case. Therefore, interchangeability of parts among fans of different models is realized, and the investment of fan casting blank molds is reduced, so that corresponding production cost is reduced.
Preferably, the impeller cover comprises a round cover and a connecting pipe, a round opening is formed in the center of the round cover, the connecting pipe penetrates through the air inlet and is connected with the round opening, and the diameter of the connecting pipe, the diameter of the round opening and the diameter of the air inlet are equal.
By adopting the technical scheme, the ratio of the diameter of the fan flow channel to the diameter of the impeller can influence the overall performance of the fan, so that under the condition of not changing the diameter of the outlet of the fan flow channel, the fan flow channel part is changed from a fixed inner diameter design to a fixed outer diameter design, the diameter of the fan flow channel is adjusted through the size of the impeller cover, the overall radial size of the fan is reduced, meanwhile, the right volute and the impeller cover are integrated and combined into a whole, the assembly error of the volute and the impeller cover is directly saved, the assembly precision is improved, the repeated vehicle repair of the installation process is avoided, and the installation process is greatly simplified.
Preferably, a plurality of support rib plates are arranged on the outer side surfaces of the connecting pipe and the right volute along the circumference, one ends of the support rib plates are connected with the connecting pipe, and the other ends of the support rib plates are connected with the right volute.
Preferably, the air inlet is disposed at a central position of a side surface of the right scroll casing.
Preferably, the air outlet is arranged on one side of the air inlet, the air outlet is fixedly connected with an air duct, one side of the air duct is fixedly connected with the outer surface of the right volute, and the other side of the air duct is bent towards the outside of the air duct to form a certain radian.
Through adopting above-mentioned technical scheme, change the air outlet into one side from directly over and place, increased one section bend with the dryer, reduced the holistic radial dimension of fan.
Preferably, a sealing ring is arranged at the joint of the motor and the left volute.
Through adopting above-mentioned technical scheme, set up the sealing washer and have better shock attenuation effect, the installation is stable, and the motor is difficult to break away from with left spiral case.
Preferably, a convex spigot is arranged around the circumferential edge of the right volute, and a concave spigot matched with the convex spigot is arranged on the circumferential edge of the left volute.
By adopting the technical scheme, the installation precision is ensured, the adjustment amount during installation is reduced, the positioning is easy, the coaxiality is ensured, part of bolt bearing capacity can be offset, and the service life of a product is prolonged.
Preferably, the left volute and the motor are fixedly connected through a first bolt, and the flange plate and the left volute are fixedly connected through a second bolt.
In summary, the invention has the following beneficial technical effects:
1. according to the high-speed direct-drive fan with the radial subdivision structure, the flange plate, the volute and the impeller cover are integrated and combined into the left volute and the right volute, so that the weight of the fan with the same model is greatly reduced, meanwhile, the production cost is correspondingly reduced, the overall radial size of the fan is greatly reduced while the performance design requirement of the fan is met, the weight of the fan is further reduced, the structure of the fan is more compact, the occupied space is reduced, the fan is more suitable for the use environment of a narrow space of a user, the size of a fan silencing housing matched with the fan or an assembly cabinet is correspondingly reduced after the overall radial size of the fan is reduced, and the cost of the matched fan silencing housing or the assembly cabinet is reduced;
2. according to the high-speed direct-drive fan with the radial subdivision structure, only the left volute can be replaced for fans of different types, which have similar runner sections but different impeller widths, and only the right volute needs to be replaced for fans of different types, which have the same impeller widths but different runner sections. Therefore, the interchangeability of parts among fans of different models is realized, and the investment of fan casting blank molds is reduced, so that the corresponding production cost is reduced;
3. according to the high-speed direct-drive fan with the radial subdivision structure, the matching of the impeller cover and the impeller is difficult to control due to the assembling error of the volute and the impeller cover, the molded line where the impeller cover and the impeller are matched needs to be subjected to repeated repairing and turning processing according to the actual installation situation during assembly, so that the installation process is quite repeated, and the precision cannot be guaranteed.
Drawings
Fig. 1 is a schematic view of the slope structure of the present invention.
Fig. 2 is a partial structural schematic diagram of the present invention.
FIG. 3 is a schematic diagram of the structure of the right volute of the present invention.
Fig. 4 is a schematic view of the flow channel of the present invention.
Fig. 5 is a schematic view of a flow path of a conventional fan.
Description of reference numerals: 1. a motor; 2. a left volute; 3. a right volute; 4. an impeller; 5. a flange plate; 6. a dome; 7. a connecting pipe; 8. a round mouth; 9. a support rib plate; 10. an air duct; 11. a seal ring; 12. a first bolt; 13. a second bolt; 14. and a fan flow channel.
Detailed Description
The present invention is described in further detail below with reference to figures 1-5.
The embodiment of the invention discloses a high-speed direct-drive fan with a radial subdivision structure. Referring to fig. 1-3, a high-speed direct-drive fan with a radial subdivision structure comprises a motor 1, a left volute 2, a right volute 3 and an impeller 4;
the left volute 2 is detachably connected with the right volute 3, a cavity for accommodating the impeller 4 is formed between the left volute 2 and the right volute 3, the left volute 2 is connected with the motor 1 through a flange 5, and a matching surface is arranged between the left volute 2 and the motor 1, so that the central line of the left volute 2 and the central line of the motor 1 are on the same straight line;
the output shaft of the motor 1 is connected with the impeller 4;
an air inlet and an air outlet are formed in the right volute 3, an impeller cover is arranged on the right volute 3, a fan flow channel 14 is formed between the impeller cover and the right volute 3, the fan flow channel 14 is communicated with the air outlet, and the impeller cover is communicated with the air inlet.
Through integrating ring flange 5, spiral case and 5 covers of impeller, merge into left spiral case 2 and 3 two parts of right spiral case, greatly alleviateed the same model fan weight, but to the different model fans of 4 width differences of similar runner cross sections impeller, can only change left spiral case 2, and is the same to 4 width of impeller, but the different model fans of runner cross section difference only need change right spiral case 3. Therefore, interchangeability of parts among fans of different models is realized, and the investment of fan casting blank molds is reduced, so that corresponding production cost is reduced.
Specifically, referring to fig. 3-5, the impeller cover includes a circular cover 6 and a connecting pipe 7, a circular opening 8 is disposed at the center of the circular cover 6, the connecting pipe 7 penetrates through the air inlet and is connected with the circular opening 8, and the diameter of the connecting pipe 7, the diameter of the circular opening 8 and the diameter of the air inlet are equal.
The proportion of the diameter of the fan flow channel 14 to the diameter of the impeller 4 can affect the overall performance of the fan, so that under the condition of not changing the diameter of an outlet of the fan flow channel 14, the fan flow channel 14 is changed from a fixed inner diameter design to a fixed outer diameter design, the diameter of the fan flow channel 14 is adjusted through the size of the impeller cover, the overall radial size of the fan is reduced, meanwhile, the right volute 3 and the impeller cover are integrated and combined into a whole, the assembly error of the volute and the impeller cover is directly saved, the assembly precision is improved, the repeated vehicle repair of the installation process is avoided, and the installation process is greatly simplified.
Specifically, a plurality of support rib plates 9 are arranged on the outer side surfaces of the connecting pipe 7 and the right volute 3 along the circumference, one end of each support rib plate 9 is connected with the connecting pipe 7, and the other end of each support rib plate 9 is connected with the right volute 3.
Specifically, the air inlet is provided at the center of the side face of the right scroll casing 3.
Specifically, referring to fig. 4, the air outlet is arranged on one side of the air inlet, the air outlet is fixedly connected with an air duct 10, one side of the air duct 10 is fixedly connected with the outer surface of the right volute 3, the other side of the air duct 10 is bent towards the outside of the air duct to form a certain radian, the air outlet is placed on one side instead of the air duct from the right above, one section of bend is added to the air duct 10, and the overall radial size of the fan is reduced.
Specifically, motor 1 and left spiral case 2 junction are equipped with sealing washer 11, set up sealing washer 11 and have better shock attenuation effect, and the installation is stable, and motor 1 is difficult for breaking away from with left spiral case 2.
Specifically, the circumferential edge of right spiral case 3 is equipped with between protruding tang, be equipped with the concave tang with protruding tang looks adaptation at the circumferential edge of left spiral case 2, guarantee the installation accuracy, the adjustment volume when reducing the installation, easy location guarantees the axiality, simultaneously, passes through bolt fastening when left spiral case 2 and the installation of right spiral case 3, and protruding tang and concave tang also can offset a part of bolt bearing capacity, extension product life.
Specifically, the left volute 2 is fixedly connected with the motor 1 through a first bolt 12, and the flange 5 is fixedly connected with the left volute 2 through a second bolt 13.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides a high-speed fan that directly drives of radial subdivision structure which characterized in that: comprises a motor (1), a left volute (2), a right volute (3) and an impeller (4);
the left volute (2) is detachably connected with the right volute (3), a cavity for accommodating the impeller (4) is formed between the left volute (2) and the right volute (3), the left volute (2) is connected with the motor (1) through a flange plate (5), and a matching surface is arranged between the left volute (2) and the motor (1), so that the center line of the left volute (2) and the center line of the motor (1) are on the same straight line;
the output shaft of the motor (1) is connected with the impeller (4);
the fan is characterized in that an air inlet and an air outlet are formed in the right volute (3), an impeller cover is arranged on the right volute (3), a fan flow channel (14) is formed between the impeller cover and the right volute (3), the fan flow channel (14) is communicated with the air outlet, and the impeller cover is communicated with the air inlet.
2. The high-speed direct-drive fan with the radially split structure as claimed in claim 1, wherein: the impeller cover comprises a round cover (6) and a connecting pipe (7), a round opening (8) is formed in the center of the round cover (6), the connecting pipe (7) penetrates through the air inlet and is connected with the round opening (8), and the diameter of the connecting pipe (7), the diameter of the round opening (8) and the diameter of the air inlet are equal.
3. The high-speed direct-drive fan with the radially split structure as claimed in claim 2, wherein: the connecting pipe (7) with the lateral surface of right spiral case (3) is equipped with a plurality of support floor (9) along the circumference, the one end of support floor (9) with connecting pipe (7) are connected, the other end of support floor (9) with right spiral case (3) are connected.
4. The high-speed direct-drive fan with the radially split structure as claimed in claim 1, wherein: the air inlet is arranged at the center of the side surface of the right volute (3).
5. The high-speed direct-drive fan with the radially split structure as claimed in claim 4, wherein: the air outlet is arranged on one side of the air inlet, an air duct (10) is fixedly connected to the air outlet, one side of the air duct (10) is fixedly connected with the outer surface of the right volute (3), and the other side of the air duct (10) bends towards the outside of the air duct (10) to form a certain radian.
6. The high-speed direct-drive fan with the radially split structure as claimed in claim 1, wherein: and a sealing ring (11) is arranged at the joint of the motor (1) and the left volute (2).
7. The high-speed direct-drive fan with the radially split structure as claimed in claim 1, wherein: the circumferential edge of the right volute (3) is provided with a convex spigot, and the circumferential edge of the left volute (2) is provided with a concave spigot matched with the convex spigot.
8. The high-speed direct-drive fan with the radially split structure as claimed in claim 1, wherein: the left volute (2) is fixedly connected with the motor (1) through a first bolt (12), and the flange plate (5) is fixedly connected with the left volute (2) through a second bolt (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210627608.1A CN114810640B (en) | 2022-06-06 | 2022-06-06 | High-speed direct-driven fan with radial subdivision structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210627608.1A CN114810640B (en) | 2022-06-06 | 2022-06-06 | High-speed direct-driven fan with radial subdivision structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114810640A true CN114810640A (en) | 2022-07-29 |
| CN114810640B CN114810640B (en) | 2024-01-23 |
Family
ID=82521137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210627608.1A Active CN114810640B (en) | 2022-06-06 | 2022-06-06 | High-speed direct-driven fan with radial subdivision structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114810640B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085994A (en) * | 1992-07-11 | 1994-04-27 | 株式会社金星社 | The spiral case device of ventilator |
| JPH08284881A (en) * | 1995-04-17 | 1996-10-29 | Mitsubishi Chem Corp | Centrifugal compressor |
| CN101149066A (en) * | 2007-09-07 | 2008-03-26 | 济南东方天明机械有限公司 | Centrifugal type slurry pump impeller adjusting gap scouring and erosion-reducing technology and apparatus |
| CN101255867A (en) * | 2007-10-09 | 2008-09-03 | 杨军 | Chemical water pump |
| JP2015059433A (en) * | 2013-09-17 | 2015-03-30 | 株式会社デンソー | Fuel pump |
| CN104764239A (en) * | 2014-01-07 | 2015-07-08 | Lg电子株式会社 | A turbo chiller |
| CN205478443U (en) * | 2016-03-31 | 2016-08-17 | 亿昇(天津)科技有限公司 | Magnetic suspension high speed centrifugation air -blower |
| CN108843607A (en) * | 2018-08-22 | 2018-11-20 | 江苏冠愉电机科技有限公司 | A kind of blower convenient for disassembly and assembly |
| JP2021134711A (en) * | 2020-02-26 | 2021-09-13 | 株式会社不二工機 | Drainage pump |
| CN114017389A (en) * | 2021-05-11 | 2022-02-08 | 佛山市南海九洲普惠风机有限公司 | Low-noise centrifugal fan volute |
-
2022
- 2022-06-06 CN CN202210627608.1A patent/CN114810640B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085994A (en) * | 1992-07-11 | 1994-04-27 | 株式会社金星社 | The spiral case device of ventilator |
| JPH08284881A (en) * | 1995-04-17 | 1996-10-29 | Mitsubishi Chem Corp | Centrifugal compressor |
| CN101149066A (en) * | 2007-09-07 | 2008-03-26 | 济南东方天明机械有限公司 | Centrifugal type slurry pump impeller adjusting gap scouring and erosion-reducing technology and apparatus |
| CN101255867A (en) * | 2007-10-09 | 2008-09-03 | 杨军 | Chemical water pump |
| JP2015059433A (en) * | 2013-09-17 | 2015-03-30 | 株式会社デンソー | Fuel pump |
| CN104764239A (en) * | 2014-01-07 | 2015-07-08 | Lg电子株式会社 | A turbo chiller |
| KR20150081843A (en) * | 2014-01-07 | 2015-07-15 | 엘지전자 주식회사 | A turbo chiller |
| CN205478443U (en) * | 2016-03-31 | 2016-08-17 | 亿昇(天津)科技有限公司 | Magnetic suspension high speed centrifugation air -blower |
| CN108843607A (en) * | 2018-08-22 | 2018-11-20 | 江苏冠愉电机科技有限公司 | A kind of blower convenient for disassembly and assembly |
| JP2021134711A (en) * | 2020-02-26 | 2021-09-13 | 株式会社不二工機 | Drainage pump |
| CN114017389A (en) * | 2021-05-11 | 2022-02-08 | 佛山市南海九洲普惠风机有限公司 | Low-noise centrifugal fan volute |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114810640B (en) | 2024-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5259164B2 (en) | Blower impeller | |
| CN201448288U (en) | Adapter and blower by using same | |
| US4373861A (en) | Axial-flow fan | |
| AU2008242166C1 (en) | Radial blade wheel | |
| US20120121409A1 (en) | Blower | |
| US2976352A (en) | Blower unit | |
| CN104329271B (en) | Fan and air conditioner with same | |
| CN114810640A (en) | High-speed direct-drive fan with radial subdivision structure | |
| KR101817956B1 (en) | Impeller for a blower | |
| EP3211247B1 (en) | Diagonal flow fan | |
| CN201335528Y (en) | Industrial air heater | |
| CN110671364A (en) | Integrally-manufactured volute and steam compressor thereof | |
| CN107061324B (en) | Axial fan and air conditioner with same | |
| US5074751A (en) | Fan casing | |
| US4886415A (en) | Fan with an essentially square housing | |
| WO2021022823A1 (en) | Volute assembly, and induced draft fan and gas furnace applying same | |
| CN202768490U (en) | Novel fan | |
| CN211116803U (en) | Integrally-manufactured volute and steam compressor thereof | |
| CN209181100U (en) | Ducting assembly and air conditioner with it | |
| CN207989392U (en) | Vertical centrifugal pump | |
| CN206397778U (en) | A kind of pipeline fan | |
| CN206608377U (en) | Blower fan pump housing main axle structure and blower fan | |
| CN106050692B (en) | A kind of high pressure chlorine multistage centrifugal blower | |
| CN217582602U (en) | ABS volute fan | |
| CN201059733Y (en) | Electric heating tube type fast electric water heater |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |