TW201817977A - A fan - Google Patents

Abstract

The present invention relates to a fan comprizing: a base, base comprizing: a plurality of internal fans, circle assembly of internal fans; an air inlet of base; and an air outlet of base; and a nozzle, nozzle mounted on a base, nozzle comprizing: an air inlet of nozzle; an interior air passage; an air outlet of nozzle; and a Coanda surface, to generate Coanda effect.

Description

 Fan  

This case relates to a fan, especially a ringless bladeless fan with low noise and a short airflow passage inside the nozzle.

Generally, the fanless fan has too much noise. If the wind speed is low, the noise is small. Once the speed is increased, the power consumption will increase by about double. Although it can increase the wind speed by about twice, it will increase the noise far beyond 3dba. The problem, such high wind speed, creates high noise and needs to be solved.

Generally, the annular bladeless fan has a long airflow passage length inside the nozzle, and there is a deceleration effect of the airflow passage inside the nozzle, which needs to be solved.

The main purpose of the present invention is to provide a ringless bladeless fan with low noise and short airflow passage length inside the nozzle, wherein a plurality of internal fans, such as two internal fans, have low wind speed, Bernoulli's principle, and the same nozzle. Export, using two internal fans at the same time, the power consumption is increased by about double, it will increase the wind speed by about double, but it will only increase by about one time, which is about 3dba noise, and solve the general bladeless fan. If the wind speed is low, The noise is small. Once the speed is increased, the power consumption will increase by about double. Although it can increase the wind speed by about one time, it will increase the noise far beyond 3dba.

A plurality of internal fans are used to form a ring shape, and the airflow is directly ejected to the nozzle airflow outlet to reduce the length of the airflow passage inside the nozzle and reduce the deceleration effect of the airflow passage inside the nozzle.

In order to achieve the above purpose, the fan of the present invention is embodied in a more general manner, comprising: a base having: a plurality of internal fans for taking in airflow and jetting airflow, a plurality of internal fans enclosing a ring, using an AC to DC voltage The converter or a battery is a power source, comprising: a plurality of internal fan airflow outlets; a pedestal airflow inlet for the inlet of the suction airflow; and a pedestal airflow outlet for the outlet of the blasting airflow; and a nozzle The nozzle is mounted on the base, the nozzle is annular in front view, and most of the central portion is hollow, and can be circulated by light and airflow. The nozzle has a nozzle airflow inlet at the nozzle and is an opening for receiving the base. a jet of air; a nozzle internal air passage for airflow; a nozzle air outlet at the nozzle, an opening for ejecting air; a Coanda surface, close to the nozzle air outlet for producing Coanda The Coanda effect increases the overall flow of the final output airflow; and a diffusing surface formed by the Coanda surface (for the end of the Coanda surface) The air flow is directed in its direction.

10, 13, 16‧‧‧ fans

11, 14, 17‧‧ pedestal

12, 15, 18‧ ‧ nozzle

110a-110c, 140a-140c, 170a-170d‧‧‧ a number of internal fans

111a-111c, 141a-141c, 171a-171d‧‧‧ a plurality of pedestal airflow inlets

112a-112c, 143a-143c, 173a-173d‧‧‧ a plurality of pedestal airflow exits

118a-118c, 148a-148c, 178a-178d‧‧‧ a number of internal fan airflow outlets

113‧‧‧Blowing fan

114‧‧‧Blow fan air outlet

115‧‧‧Blow fan air inlet

116‧‧‧Blow fan blades

117‧‧‧Blow fan motor

121, 151, 181‧‧ ‧ nozzle air inlet

122, 152, 182‧‧ ‧ nozzle air outlet

123, 153, 183‧‧‧ nozzle internal air passage

124, 154, 184‧‧‧ Coanda surface

125, 155, 185‧‧ ‧ diffusion surface

143‧‧‧Flat fan

144‧‧‧Flat fan air outlet

145‧‧‧Flat fan air inlet

146‧‧‧Flat fan blades

147‧‧‧Flat fan motor

301, 302‧‧‧ AC to DC voltage converter

303‧‧‧Battery

Fig. 1 is a schematic view showing an embodiment of the inner fan airflow outlet of the fan of the present invention toward the center of the annular hollow nozzle.

Figure 2 is a schematic view of an embodiment of a fan fan of the present invention.

Figure 3 is a side elevational view of the embodiment of the inner fan airflow outlet of the fan of the present invention toward the center of the annular hollow nozzle.

Figure 4 is a schematic view of another embodiment of the internal fan airflow outlet of the fan to the center of the annular hollow nozzle.

Figure 5 is a schematic view of an embodiment of a fan of the fan of the present invention.

Figure 6 is a schematic view showing the front fan air outlet of the fan in the front of the case.

Figure 7 is a side elevational view of the front fan air outlet of the fan of the present invention.

In one aspect, please refer to FIG. 1 . FIG. 1 is a schematic diagram of an embodiment of an internal fan air outlet of the fan to the center of the annular hollow nozzle. As shown in FIG. 1 , a fan 10 includes: a base 11 . The utility model has a plurality of internal fans 110a-110c for taking in airflow and a jetting airflow, a plurality of internal fans 110a-110c enclosing a ring, and an AC-to-DC voltage converter 301 as a power source, comprising: a plurality of internal fan airflow outlets 118a-118c; a plurality of pedestal airflow inlets 111a-111c for use as inlets for suction airflow; and a plurality of pedestal airflow outlets 112a-112c for exiting as a venting airflow; and a nozzle 12 for mounting nozzles 12 On the pedestal 11, the nozzle 12 is annular in front view, and most of the central portion is hollow, and can be circulated by light and airflow. The nozzle 12 has a nozzle airflow inlet 121 at the nozzle 12 and is an opening for receiving a plurality of bases. a jet flow of the air outlets 112a-112c; a nozzle internal air passage 123 for airflow; a nozzle air outlet 122, located at the nozzle 12, is an opening for ejecting airflow; a Coanda surface 124 that is adjacent to the nozzle airflow outlet 122 for generating a Coanda effect, increasing the overall flow of the final output airflow, and a diffusing surface 125 for directing the airflow in its direction .

2 is a schematic view of an embodiment of a fan fan of the present invention. As can be seen from FIG. 2, the blower fan 113 represents a plurality of internal fans 110a-110c in FIG. 1, and an internal fan 110a for drawing in airflow and ejecting airflow. It has a drum fan air outlet 114 representing a plurality of internal fan air outlets 118a-118c in Fig. 1, one internal fan air outlet 118a; a blower air inlet 115; a blower fan blade 116; and a blower fan motor 117.

3 is a side view of the embodiment of the fan airflow outlet of the fan to the center of the annular hollow nozzle. As shown in FIG. 3, a base 11; an internal fan 110a for sucking airflow and ejecting airflow, includes: An internal fan airflow outlet 118a; a pedestal airflow inlet 111a for receiving the intake airflow; and a pedestal airflow outlet 112a for exiting the squirting airflow; and a nozzle 12 mounted to the pedestal 11 The nozzle has a nozzle airflow inlet 121, and is located at the nozzle 12 as an opening for receiving the jet airflow of the pedestal airflow outlet 112a; a nozzle internal airflow passage 123 for airflow; and a nozzle airflow outlet 122 located at The nozzle 12 is an opening for ejecting airflow; a Coanda surface 124 is adjacent to the nozzle air outlet 122 for generating a Coanda effect, increasing the overall flow of the final output airflow; and a diffusion Face 125 is used to guide the airflow in its guiding direction.

In another aspect, please refer to FIG. 4, which is a schematic diagram of another embodiment of the internal fan airflow outlet of the fan to the center of the annular hollow nozzle. As shown in FIG. 4, a fan 13 includes: a base The base 14 has a plurality of internal fans 140a-140c for taking in airflow and ejecting airflow. The plurality of internal fans 140a-140c are enclosed in a ring shape, and an AC-to-DC voltage converter 302 is used as a power source, which includes: a plurality of Internal fan airflow outlets 148a-148c; a plurality of pedestal airflow inlets 141a-141c for use as inlets for intake airflow; and a plurality of pedestal airflow outlets 142a-142c for exiting the venting airflow; and a nozzle 15, The nozzle 15 is mounted on the base 14. The nozzle is annular in front view. The central portion is hollow and can be circulated by light and air. The nozzle has a nozzle air inlet 151 and is an opening for receiving a plurality of bases. a flow of the air outlets 142a-142c; a nozzle internal air passage 153 for airflow; a nozzle air outlet 152, located at the nozzle 15, is an opening for ejecting air; Faces (Coanda surface) 154, access to the airflow outlet nozzle 152 for generating a Coanda effect (Coanda effect), the final output stream to increase the overall flow rate; and a diffusing surface 155, for guiding the airflow guide direction thereof.

Fig. 5 is a schematic view showing an embodiment of a plane fan inside the fan of the present invention. It can be seen from Fig. 5 that the plane fan 143 represents a plurality of internal fans 140a-140c in Fig. 4, wherein an internal fan 140a is used for sucking airflow and ejecting airflow. It has: a planar fan airflow outlet 144 representing a plurality of internal fan airflow outlets 148a-148c in FIG. 4, one internal fan airflow outlet 148a; a planar fan airflow inlet 145; a planar fan blade 146; and a planar fan motor 147.

In the other two aspects, please refer to FIG. 6. FIG. 6 is a schematic view showing the front fan air outlet of the fan in front of the embodiment. As shown in FIG. 6, a fan 16 includes: a base having a plurality of An internal fan 170a-170d for taking in airflow and a jetting airflow, a plurality of internal fans 170a-170d enclosing a ring, using a battery 303 as a power source, comprising: a plurality of internal fan airflow outlets 178a-178d; a plurality of pedestals a gas flow inlet for the inlet of the suction airflow; and a plurality of pedestal airflow outlets for the outlet of the blasting airflow; and a nozzle, the nozzle is mounted on the pedestal, the nozzle is annular in front view, and most of the central portion The area is hollow and can be circulated by light and airflow. It has a nozzle airflow inlet 181, is located at the nozzle, is an opening for receiving the jet flow of the plurality of pedestal airflow outlets, and a nozzle internal airflow passage 183 is used for the airflow. Circulating; a nozzle air outlet 182, located at the nozzle, is an opening for ejecting airflow; a Coanda surface 184 is adjacent to the nozzle air outlet 182 for Health Coanda effect (Coanda effect), the final output stream to increase the overall flow rate; and a diffusing surface 185, for guiding the airflow guide direction thereof.

Figure 7 is a side elevational view of the front fan air outlet of the fan of the present invention. As shown in Figure 7, a base 17; an internal fan 170a for drawing in airflow and ejecting airflow, comprising: an internal fan An airflow outlet 178a; a pedestal airflow inlet 171a for receiving the intake airflow; and a pedestal airflow outlet 172a for exiting the ejector airflow; and a nozzle 18 mounted on the pedestal 17, Having a nozzle airflow inlet 181, located in the nozzle 18, is an opening for receiving the jet airflow of the pedestal airflow outlet 172a; a nozzle internal airflow passage 183 for airflow; and a nozzle airflow outlet 182 at the nozzle 18. An opening for ejecting a gas stream; a Coanda surface 128 that is adjacent to the nozzle gas outlet 182 for generating a Coanda effect, increasing the overall flow of the final output gas stream; and a diffusion surface 185, Used to guide the airflow in its direction.

In this case, a small noiseless bladeless fan, in which a plurality of internal fans, such as two internal fans, have low wind speed, Bernoulli's principle, the same nozzle outlet, and two internal fans, increasing power consumption. About twice, it will increase about twice the wind speed, but it will only increase by about double, which is about 3dba noise. It solves the general bladeless fan. If the wind speed is low, the noise will be small. Once the speed is increased, the power consumption will increase. About twice as much, although it can increase about twice the wind speed, it will raise the problem of noise far beyond 3dba.

The use of a plurality of internal fans to form a ring shape directly discharges the airflow to the nozzle airflow outlet, reduces the length of the airflow passage inside the nozzle, and reduces the deceleration effect of the airflow passage inside the nozzle, so that the fan of the present case has an industrial value and is applied according to law.

Claims (10)

 A fan for accelerating airflow, comprising: a base for ejecting airflow, comprising: a plurality of internal fans, the plurality of internal fans enclosing a ring; a pedestal airflow inlet; and a pedestal airflow outlet And a nozzle mounted on the base, wherein the nozzle is a ring in front view, and a large part of the center is hollow, and can be circulated by light and airflow, and includes: a nozzle airflow inlet, being an opening, a nozzle for receiving the jet stream; a nozzle internal air passage for airflow; a nozzle air outlet for an opening for ejecting air; and a Coanda surface for approaching the nozzle outlet To generate the Coanda effect.    The fan according to claim 1, wherein the plurality of internal fans are a plurality of blowers.    The fan according to claim 1, wherein the plurality of internal fans are a plurality of planar fans.    The fan according to claim 1, wherein the nozzle air outlet is partitioned into a plurality of spaces.    The fan according to claim 1, wherein the base airflow inlet may be one or plural.    The fan according to the first aspect of the patent application, wherein the base airflow outlet may be one or plural.    The fan according to the first aspect of the patent application, wherein the nozzles may be one or plural.    The fan according to claim 1, wherein the end of the Coanda surface forms a diffusing surface for guiding the airflow in the guiding direction thereof.    The fan according to claim 1, wherein the plurality of internal fans use an AC to DC voltage converter as a power source.    The fan of claim 1, wherein the plurality of internal fans use a battery as a power source.