CN215058444U - Distributed air duct fan based on centrifugal fan - Google Patents
Distributed air duct fan based on centrifugal fan Download PDFInfo
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- CN215058444U CN215058444U CN202120375262.1U CN202120375262U CN215058444U CN 215058444 U CN215058444 U CN 215058444U CN 202120375262 U CN202120375262 U CN 202120375262U CN 215058444 U CN215058444 U CN 215058444U
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- centrifugal fan
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- 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
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- 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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- 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
Abstract
The utility model discloses a distributed air duct fan based on centrifugal fan is a fan assembly for generating air current, including centrifugal fan, at least one air duct, air duct separator, in the fan, the flow direction of air current is from the air intake of centrifugal fan and is inhaled, after passing through the centrifugal fan, the air current has passed through 60 degrees to 90 degrees turns and blows off around the centrifugal fan, then passes through the water conservancy diversion of air duct separator and enters into each branch tuber pipe, and finally the air current passes through air outlet conversion equipment and is ejected from the air outlet slit; the utility model discloses a fan is that air resistance is little to the bladeless fan that the wind pressure of greatly reduced fan required. The fan has the advantages of large air outlet quantity, low noise and greatly reduced energy consumption. Compared with the existing bladeless fan, the same wind field is formed in front of the fan, and the energy consumed by the distributed air duct fan based on the centrifugal fan can be reduced to below 40%.
Description
Technical Field
The utility model relates to a distributing type wind channel fan based on centrifugal fan is a neotype bladeless fan.
Background
2 very important invention patents (application numbers CN200810177843.3 and CN200810177844.8) are already distributed between 9 and 11 months in 2008 of Dyson (Dyson) in the UK, a bladeless fan based on the Dyson invention patents has no exposed blades, the potential safety hazard caused by difficult cleaning of the blades and the exposed blades is solved, airflow with uniform speed is sprayed from an air outlet, and an air field formed in front of the fan is uniform. Such bladeless fans require the motor on the base to be able to generate both a large air volume and a high air pressure. In the description of its patent application No. CN200810177843.3, its embodiment requires that the air flow generated by the motor 22 through the nozzle 16 has a pressure of at least 400Pa (pascal) while its air volume needs to be above 20 liters/second, which is a high requirement for the fan.
The utility model aims at designing a no leaf fan that air resistance is little to the wind pressure requirement of greatly reduced fan. The bladeless fan has the advantages of large air outlet quantity, low noise and greatly reduced energy consumption. Compared with the existing bladeless fan, the same wind field is formed in front of the fan, and the energy consumed by the distributed air duct fan based on the centrifugal fan can be reduced to below 40%.
Disclosure of Invention
The existing bladeless fan forcibly changes the running direction of airflow in a circular ring, so that higher air speed can be blown out only when the air pressure in the circular ring is higher, and large air volume and high air pressure can be generated at the same time only by increasing the rotating speed of a fan on a base and improving power. The rotation speed of the fan is a main factor influencing the noise of the fan, and meanwhile, a large amount of energy is wasted in the process of resisting high wind pressure by the fan and is not converted into effective wind energy. Theoretically, the wind energy generated by the fan can be expressed by the product of wind pressure and wind volume, and under the same power, in order to increase the wind volume, the wind pressure requirement must be reduced. The utility model discloses a distributed air channel changes the direction of air current, adjusts the distribution of air current, through the structure and the overall arrangement of optimizing distributed air flue, has reduced the air resistance of air current in the conversion process. After the air resistance is optimized, a smaller fan can be selected to achieve the same effect of the existing bladeless fan, so that the miniaturization of a product is facilitated, and the low noise of the product is facilitated. Similarly, if a fan with the same performance as a bladeless fan is adopted, the effects of larger air output and lower noise can be achieved. The distributed air duct fan generates the same air quantity and air speed, the requirement of the distributed air duct fan on the air pressure performance of the fan is much lower, compared with the existing bladeless fan, the same air field is formed in front of the fan, and the energy consumption of the distributed air duct fan based on the centrifugal fan is reduced to be below 40%.
Based on the utility model discloses a distributed wind channel fan based on centrifugal fan compares with current bladeless fan, and the biggest difference lies in outward appearance, and the bladeless fan has formed a ring, and the centre is empty to centrifugal fan is the center, through the distributed air flue to the air water conservancy diversion to marginal, perhaps some local air outlet. That is, based on the utility model discloses a fan, the centre is solid, between the distributed air flue, there is some hollow part as supplementary air current opening, but on the whole, based on the utility model discloses a fan is solid.
A centrifugal fan based distributed duct fan is a fan assembly that generates an airflow that includes a centrifugal fan, a duct separation device, a duct, and an optional supplemental airflow opening.
The air duct is an independent air flow channel and comprises a branch air duct, a branch air duct-to-air outlet conversion device corresponding to the branch air duct, and a corresponding air outlet slit. The air channels operate independently, the air channels do not interfere with each other, and optimization of wind resistance is performed in a single air channel. The number of the air ducts is planned according to specific products and is not fixed. Because the utility model discloses a fan is that a plurality of wind channels are constituteed, distributes in each direction of fan, so its name is distributing type wind channel fan, the utility model discloses the fan of chooseing for use has adopted centrifugal fan, so the utility model relates to a distributing type wind channel fan based on centrifugal fan.
The impeller of the mixed-flow fan enables air to do centrifugal motion and axial motion, and the motion of the air in the shell mixes two motion modes of axial flow and centrifugation. When the air movement characteristic of the mixed flow fan is mainly centrifugal movement and assisted by axial movement, the same or even better effect of the centrifugal fan can be achieved. Because the characteristics that its centrifugal motion is leading have mainly been utilized, the utility model discloses a still be the fan the utility model discloses a distributed wind channel fan based on centrifugal fan is called.
The air flow is sucked from the air suction port of the fan, after passing through the centrifugal fan, the air flow is blown out from the periphery of the fan after turning by 60-90 degrees, enters each branch air pipe through the flow guide of the air duct separating device, and finally passes through the air outlet conversion device and is sprayed out from the air outlet slit.
Although the air ducts are operated independently and do not interfere with each other, some local areas may communicate with each other. For example, at the tail end of the air duct and at a position closer to the air outlet slit, the two independent air ducts can be fused together, and the influence on the overall performance of the fan is small.
The centrifugal fan structurally comprises an air suction port, an impeller front disc, an impeller rear disc, an air outlet and a rotating part; the utility model discloses the centrifugal fan who chooses for use can choose open centrifugal fan or semi-enclosed centrifugal fan for use to practice thrift the cost.
The centrifugal fan also comprises a mixed flow fan with air motion characteristics taking centrifugal motion as a main part and axial motion as an auxiliary part.
The centrifugal fan requires that the static pressure value of the fan is more than 60Pa (pascal) under the condition that the fan meets the target air volume, and the actual values of the air volume and the air pressure of the fan need to be designed according to the product requirements.
The centrifugal fan comprises a forward-inclined centrifugal fan, a backward-inclined centrifugal fan and a radial centrifugal fan, and the rotation direction of the centrifugal fan is not limited. The rotational direction of the centrifugal fan greatly affects the optimization of the wind resistance, thereby affecting the structure of the fan.
The centrifugal fan can control the size of the air speed of the air outlet slit by adjusting the speed of the fan, and is used for a fan needing to adjust the air speed.
The air duct separating device comprises an upper cover, a lower cover and an air duct separating and guiding device. The upper cover wraps the impeller front disc of the centrifugal fan from the upper surface, the lower cover wraps the impeller rear disc of the centrifugal fan from the lower surface, when the centrifugal fan is wrapped, a gap of less than 3 millimeters is formed between the upper cover and the impeller front disc, and a gap of less than 3 millimeters is formed between the lower cover and the impeller rear disc. The gap size is smaller, so that the centrifugal fan can rotate without mechanical obstacle, and meanwhile, the air flow can flow in the fan, and only a small amount of air flow reversely overflows from the gap to the air suction port of the centrifugal fan.
The air duct separating and guiding device is arranged near an air outlet of the centrifugal fan and is used for separating two air ducts, and the position of the air duct separating and guiding device is determined according to the position of an outlet gap of the two air ducts of the guiding device and the outlet air volume of the two air ducts; in order to reduce the wind resistance, the initial direction of the flow guide device is basically the same as the wind direction of the air outlet of the centrifugal fan at the position, and the error is not more than 30 degrees; on the basis of the direction, the air duct is transited to the side edge of the air duct through an arc or other curves; the two sides of the air duct flow guiding device belong to two different air ducts, the two sides of the two air ducts are transited to different air duct side edges through different curves, and the two sides of the two air ducts are gradually separated from the initial positions.
The branch air pipe is used for restricting air to be sent to the air outlet conversion device through a pipeline; the branch air pipe needs to adopt the low windage design, can adopt the tuber pipe to gradually enlarge, and the tuber pipe diminishes gradually, and the tuber pipe is crooked, low windage designs such as water conservancy diversion piece.
The conversion from the branch air pipe to the air outlet is a structure for converting the shape and the size of the outlet of the branch air pipe to the air outlet slit. Because of the structural characteristics of narrow air outlet slit, bent air pipe, reduced width of the air pipe and lengthened length of the air pipe, the air resistance is large due to the fact that the air speed of the slit is fast; the most important requirement is to adopt an optimized wind resistance design to improve the performance of the fan, and the design is one of key structures for reducing the wind resistance in the whole distributed air duct fan.
The most important factor influencing the wind resistance is that the outlet wind speed of the air outlet slit is increased, the width of the outlet slit is increased, the requirement on the outlet wind speed can be reduced, and therefore the wind resistance is effectively reduced. Therefore, the width of the outlet gap is increased, which is an important measure for reducing the wind resistance.
The included angle of the air outlet converted from the branch air pipe to the air outlet is basically the same as the target blowing direction and is not more than plus or minus 20 degrees, otherwise, the air field formed by the fan is not uniform.
Based on the utility model discloses a fan can control the wind field that the fan formed through the mode of designing suitable air outlet contained angle, in the bladeless fan of dyson, reaches the wind field that the surface controlled the fan and formed through the Cohen. Adopt the utility model discloses on the basis of structure, increase ke en and reach surface control wind field again, also need to receive this patent protection.
The air outlet slit is a long and thin slit, the slit comprises the characteristics of length, width, shape, direction and position, and a wind field in a specific direction and a specific area can be formed in front of the fan by combining a plurality of slits. The structure of the air outlet conversion device is the outlet from the branch air pipe to the air outlet conversion device.
The width of the air outlet slit is between 1mm and 5mm, the gap is smaller than 1mm, the requirement on the wind pressure characteristic of the fan is high, and if the gap is larger than 5mm, the requirement on the wind volume value of the fan is high. The length of the air outlet slit (5) needs to consider the wind resistance performance of the branch air pipe converted to the slit, the complexity of the structural design and the like. The gap is too long, which usually causes uneven wind speed at different parts of the gap, and the gap is too short, which causes too many wind channels and complicated structure. The length of the gap will typically be below 150 mm.
The air outlet slits and the outlet slits of different air ducts are connected together and arranged into a chain. A fan may have 1 or more such outlet chains present, the outlet direction of the same chain being the same, or changing direction in a stepwise transition.
The direction of the outlet gap is the same if strong wind is required to blow from the front side of the air outlet gap, if the blowing area is required to be diffused, the direction of the gap needs to be expanded outwards towards the front direction of the axis of the fan, the single-side expansion angle does not exceed 20 degrees, and the expansion angle is large, so that the wind field formed by the fan is uneven.
The air outlet slit (the distance between the symmetrical slits is required to be not too long and distributed annularly, the diameter is generally required to be within 400mm, the two slits are distributed in a linear manner, the distance between the two straight lines is within 280mm, otherwise, the central wind speed of a wind field formed by the fan is easy to cause weak condition.
The air outlet slit can be added with some grids in one slit, and the grids can play a role in guiding flow except for the appearance, so that air blowing is more uniform.
A supplementary airflow opening, according to bernoulli's principle: the faster the flow rate, the less the fluid pressure. Along with the high-speed airflow ejected out of the air outlet slit, the high-speed airflow generates negative pressure to attract surrounding air to move along, and the effect of air multiplication is achieved. If the supplementary airflow opening is not provided or the area of the supplementary airflow opening is insufficient, the airflow in the wind field formed by the front face of the fan is easy to draw close to the middle, so that the conditions that the central wind speed of the wind field formed by the fan is too strong and the edge is rapidly weakened are caused.
If the requirement on the uniform wind field is not high, the supplementary airflow opening can be blocked on the structure, so that the appearance and the shape are convenient.
The supplementary airflow opening, among other functions, includes: the weight of the fan, the fan shape, the peripheral installation and the like are reduced.
The supplementary air flow opening structure is a spare part between different air channels in the fan, and the front and the back of the fan are communicated.
The supplementary air flow openings are not formed among all the air channels, and the supplementary air flow openings are small or even nonexistent in some local places due to narrow space.
Drawings
In order to make the embodiments, technical solutions and advantages of the present invention more clearly understood, the following detailed description of the present invention is made with reference to the accompanying drawings and embodiments, and it should be understood that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.
FIG. 1 is a schematic view of a back side structure
FIG. 2 is a schematic front view of the structure
FIG. 3 is a sectional view of a partial duct splitter
FIG. 4 is a cross-sectional view of the transition from the local branch duct to the outlet
Wherein: (1) the air-conditioning system comprises a centrifugal fan, (2) an air duct separating device, (3) a branch air duct, (4) a branch air duct-to-air outlet conversion device, (5) an air outlet slit, (6) a supplementary air flow opening, (2-1) an air duct separating device upper cover, (2-2) an air duct separating device lower cover, (2-3) an air duct separating and guiding device, (4-1) a branch air duct-to-air outlet conversion device inlet, and (4-2) a branch air duct-to-air outlet conversion device air outlet included angle.
Detailed Description
The utility model provides a distributed wind channel fan based on centrifugal fan, is the fan unit who produces the air current, and this fan unit can accomplish the basic function of fan, all adopt the utility model discloses the subassembly is all in its fan as a part or part combination the utility model discloses a protection within range. In addition, the present embodiment is only one embodiment according to the present invention, and not all embodiments are listed.
As shown in fig. 1, 2, 3 and 4, a distributed air duct fan based on a centrifugal fan is composed of a centrifugal fan (1), an air duct separating device (2), a branch air duct (3), a branch air duct-to-air outlet conversion device (4), an air outlet slit (5) and a supplementary air flow opening (6).
The air duct is an independent air flow channel and comprises a branch air duct (3), a branch air duct-to-air outlet conversion device (4) corresponding to the branch air duct, and a corresponding air outlet slit (5). The air channels operate independently and do not interfere with each other.
The air flow channels inside the air duct are connected and can be structurally regarded as a single entity.
In the fan of this embodiment, there are 10 air ducts.
The centrifugal fan (1) is placed in the middle of the whole fan, the air flow is sucked from the inlet of the centrifugal fan in the flowing direction, after passing through the centrifugal fan, the air flow is turned by 90 degrees and blown out from the periphery of the centrifugal fan, and finally enters the branch air pipes (3) of each air passage through the flow guide of the air channel separation device (2), and finally the air flow is sprayed out from the air outlet slits (5) through the air outlet conversion device (4).
Except the centrifugal fan (1), other parts are a logical structure on the function, and are not independent entity structure, and air outlet slit (5) are not the existence of an entity yet, but the arrangement of air outlet slit is the utility model discloses the core function of fan, so need list specially.
Each air duct consists of a rear shell, a front shell and two air duct walls. The position and shape of the front shell, the rear shell and the duct wall of each duct are calculated by wind resistance optimization, and the position and shape can be observed from fig. 1 and 2. The rear shell and the front shell of the air duct are logically independent, but physically, the front shells of all the air ducts are connected together as a whole; the back shells of all the air ducts are connected together as a whole, and meanwhile, the two side walls of the air ducts are also structurally molded with the back shells in an injection mode. The front shell and the rear shell are provided with openings at the positions for supplementing air flow openings, the front shell is provided with 3 screw holes at the position for installing the centrifugal fan and is provided with an opening for leading out a control line of the centrifugal fan. The back shell is arranged above the air suction port of the centrifugal fan and is provided with an opening which is slightly larger than the air suction port of the centrifugal fan. At the position of the branch air duct to the air outlet conversion device (4), as shown in fig. 4, the front shell and the rear shell are required to make a turn, and the angle of the turn is the included angle (4-2) from the branch air duct to the air outlet conversion device. In this example, the radius of turning of preceding shell is 19mm, and the radius of turning of backshell is 45mm, and the air outlet contained angle is 90, is favorable to the front intensity of blowing maximize.
Noise control and wind resistance control are comprehensively considered, the thickness of the front shell and the rear shell is 3mm, and the thickness of the side wall of the air channel is 1.5 mm.
The whole fan can be structurally divided into a front shell, a rear shell and a centrifugal fan.
The centrifugal fan is arranged in the middle of the front shell through a screw hole in the front shell, and the hole is sealed through dispensing after a control line of the centrifugal fan is led out. Then the front shell and the rear shell are assembled together through a buckle and a screw, and a gap after the front shell and the rear shell are assembled in front of the fan is the air outlet slit (5). After the centrifugal fan is electrified, the fan can work, wind is sucked from the opening in the middle of the rear shell, namely the air suction opening of the centrifugal fan, and is sprayed out from the air outlet slit (5), and finally, a uniform wind field is formed in front of the fan.
In this example, a closed retroversion centrifugal fan is used, with an impeller front disk and an impeller rear disk configuration. The centrifuge rotates counter-clockwise, seen in the direction of the back shell. The maximum wind pressure is 248Pa, and the maximum wind quantity is 33 liters/second.
In this example, 10 branch air duct guiding devices (2-3) are designed, the starting positions of the branch air duct guiding devices are located on a circular ring at a position 1mm away from the air outlet of the centrifugal fan, the included angle between the starting point of the first air duct guiding device and the horizontal line is 72 degrees, the included angle between the air outlet direction of the centrifugal fan at the position and the tangential direction of the circular ring at the position is 36 degrees, the starting point of each subsequent air duct guiding device is located on the circular ring, and the included angle between the air outlet direction of the centrifugal fan at the positions and the tangential direction of the circular ring at the position is 36 degrees at every 36 degrees.
In this example, as shown in fig. 2, the width of the air outlet slits is 2.6mm, the length of each air outlet slit is 68.5mm, the interval between the slits is 1.5mm, and the slits are arranged in a "door" shape. The length of arranging the upper air outlet slit is 180mm, and the height of arranging the left slit and the right slit is 260 mm.
In this example, there are 10 total supplemental airflow openings, including the lowermost largely triangular supplemental airflow opening.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (11)
1. The utility model provides a distributed wind channel fan based on centrifugal fan, is the fan unit who produces the air current, includes centrifugal fan, at least one wind channel, wind channel separator which characterized in that: the flow direction of the air flow is sucked from an air suction port of the centrifugal fan, after passing through the centrifugal fan, the air flow is blown out from the periphery of the centrifugal fan after turning at 60-90 degrees, enters each branch air pipe through the flow guide of the air duct separating device, and finally passes through the air outlet conversion device and is sprayed out from the air outlet slit;
the air duct is an independent air flow channel and comprises a branch air pipe, a branch air pipe-air outlet conversion device corresponding to the branch air pipe, and a corresponding air outlet slit; the air channels operate independently, the air channels do not interfere with each other, and optimization of wind resistance is performed in a single air channel.
2. The distributed duct fan based on the centrifugal fan as claimed in claim 1, wherein: the fan also comprises a supplementary airflow opening which is mainly used for preventing the situation that the central wind speed of a wind field formed by the fan is too strong and the edge is rapidly weakened; the structure is the spare part between different air channels in the fan; under the condition of reducing the requirement of wind field uniformity, the supplementary air flow opening can be blocked to meet the requirement of appearance design.
3. The distributed duct fan based on the centrifugal fan according to claim 1 or 2, characterized in that: under the condition of not influencing the whole performance of the fan, the air channels can be communicated with each other in some local places.
4. The distributed duct fan based on the centrifugal fan according to claim 1 or 2, characterized in that: the static pressure value of the centrifugal fan is above 60 pascal under the condition that the target air volume is met.
5. The distributed duct fan based on the centrifugal fan according to claim 1 or 2, characterized in that: the centrifugal fan comprises a mixed flow fan with air motion characteristics taking centrifugal motion as a main part and axial motion as an auxiliary part.
6. The distributed duct fan based on the centrifugal fan according to claim 1 or 2, characterized in that: the air duct separation device structurally comprises an upper cover, a lower cover and an air duct flow guide device; the upper cover wraps the impeller front disc of the centrifugal fan from the upper surface, the lower cover wraps the impeller rear disc of the centrifugal fan (1) from the lower surface, and when the upper cover wraps the impeller front disc, a gap of less than 3mm exists between the upper cover and the impeller front disc, and a gap of less than 3mm exists between the lower cover and the impeller rear disc.
7. The distributed duct fan based on the centrifugal fan as claimed in claim 6, wherein: the air duct guiding device is a part for separating two air ducts near an air outlet of the centrifugal fan, and the position of the air duct guiding device is determined according to the position of an outlet gap of the two air ducts of the guiding device and the outlet air quantity of the two air ducts; in order to reduce the wind resistance, the direction of the flow guide device is basically the same as the wind direction of the air outlet of the centrifugal fan at the position, and the error is not more than 30 degrees; on the basis of the direction, the air duct is transited to the side edge of the air duct through a curve; the two sides of the air duct flow guiding device belong to two different air ducts, the two sides of the two air ducts are transited to different air duct side edges through different curves, and the two sides of the two air ducts are gradually separated from the initial positions.
8. The distributed duct fan based on the centrifugal fan according to claim 1 or 2, characterized in that: the branch air pipe is used for restricting air to be sent to the air outlet conversion device through a pipeline; the branch air pipe adopts a low wind resistance structural design.
9. The distributed duct fan based on the centrifugal fan according to claim 1 or 2, characterized in that: the device for converting the branch air pipe into the air outlet is a structure for converting the shape and the size of the outlet of the branch air pipe into the air outlet slit;
the air outlet included angle from the branch air pipe to the air outlet conversion device is basically the same as the target blowing direction and is not more than plus or minus 20 degrees.
10. The distributed duct fan based on the centrifugal fan according to claim 1 or 2, characterized in that: the air outlet slit is a slender slit, the width of the slit is 1mm-5mm, and the length of the slit is below 150 mm.
11. The centrifugal fan-based distributed duct fan of claim 10, wherein: the air outlet slits and the outlet slits of the air channels are connected together and arranged into a chain, and the number of the chains is more than one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020101766085 | 2020-03-13 | ||
| CN202010176608.5A CN111207108A (en) | 2020-03-13 | 2020-03-13 | Distributed air duct fan based on centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215058444U true CN215058444U (en) | 2021-12-07 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010176608.5A Pending CN111207108A (en) | 2020-03-13 | 2020-03-13 | Distributed air duct fan based on centrifugal fan |
| CN202110183985.6A Pending CN112727806A (en) | 2020-03-13 | 2021-02-10 | Distributed air duct fan based on centrifugal fan |
| CN202120375262.1U Active CN215058444U (en) | 2020-03-13 | 2021-02-10 | Distributed air duct fan based on centrifugal fan |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010176608.5A Pending CN111207108A (en) | 2020-03-13 | 2020-03-13 | Distributed air duct fan based on centrifugal fan |
| CN202110183985.6A Pending CN112727806A (en) | 2020-03-13 | 2021-02-10 | Distributed air duct fan based on centrifugal fan |
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| CN (3) | CN111207108A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779686A (en) * | 2020-06-30 | 2020-10-16 | 深圳市赛昂思迪科技有限公司 | Distributed air duct fan capable of expanding blowing area |
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2020
- 2020-03-13 CN CN202010176608.5A patent/CN111207108A/en active Pending
-
2021
- 2021-02-10 CN CN202110183985.6A patent/CN112727806A/en active Pending
- 2021-02-10 CN CN202120375262.1U patent/CN215058444U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111207108A (en) | 2020-05-29 |
| CN112727806A (en) | 2021-04-30 |
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