IR blocking blade and fan using same

Abstract

The present invention provides, in a blade unit that is provided to be rotatable in a fan and comprises a plurality of blades, an IR blocking blade including a blocking member which is disposed on the blade and which blocks infrared rays generated at the rear of the blades from being transmitted to the front of the blades. In addition, the present invention provides the fan comprising: a motor part including a motor, which generates rotary force, and a motor shaft, which protrudes from the front of the motor and is rotated by means of the rotary force of the motor; a fan part which is disposed in front of the motor part, and which is connected to the motor shaft so as to receive the rotary force from the motor and rotate; and a cover part for protecting the fan part, wherein the fan part includes: a body connected to the motor shaft; the plurality of blades spaced apart from each other on the outer peripheral surface of the body; and blocking parts which are each disposed on the blade and which block infrared rays generated at the rear of the blades from being transmitted to the front of the motor part.

Description

IR blocking blades and fans using them

[0001] The present invention relates to an IR blocking blade and a fan using the same, and more particularly, to an IR blocking blade that blocks heat generated from a motor at the rear of the fan blade from being supplied forward, and to a fan using the same.

[0002] In general, heat can be divided into conduction through solid materials, convection through the movement of fluid substances such as air or liquids, and irradiation through electromagnetic waves. To lower the temperature of an object after heating, heat can be extracted through the physical phenomena mentioned above.

[0003] The human body maintains a constant body temperature. When energy is replenished through the nutrients ingested through food, this energy is used for all metabolic activities and body movements to maintain the body, so our body always maintains a constant temperature of around 36 degrees Celsius. This temperature is maintained through sweating and energy release through infrared rays from the body. In winter, the difference between body temperature and the outside temperature is large, so the amount of heat released through infrared rays is large, but in summer, the outside temperature is high, so heat release is low, making the body feel hot. For this reason, using an electric fan or similar device can increase the release of body heat through convection, keeping the body cool.

[0004] However, when heat is generated from the motor of an electric fan due to long-term use, especially when the temperature rises significantly above room temperature, this heat is radiated in all directions through infrared rays. There is a problem that the thermal infrared rays radiated through the fan blades toward the person being blown by the fan reduce the quality of the wind from the fan.

[0005] (Patent Document 1) Republic of Korea Registered Utility Model No. 20-0472891 (Title of invention: Electric fan)

[0006] The present invention was created to solve the above problems, and the purpose of the present invention is to provide an IR blocking blade and a fan using the same that blocks infrared rays from being irradiated to a user who is exposed to the wind by arranging a fan blade that blocks infrared rays generated from a motor.

[0007] The present invention provides an IR blocking blade, which is rotatably provided on a fan and includes a plurality of blades, and includes a blocking member disposed on the blades and blocking infrared rays generated at the rear of the blades from transmitting to the front of the blades.

[0008] According to the IR blocking wing according to the present invention, the area ratio of the plurality of blades to the area between the blade and the adjacent blade may be 90% or more and 100% or less.

[0009] The above-mentioned blocking member can be attached to the surfaces of the plurality of blades using a conductive material such as a conductive film, a metal thin film, or a transparent conductive film that blocks infrared rays.

[0010] The above-mentioned blocking member can be coated on the surfaces of the plurality of blades using a paint such as a conductive polymer that blocks infrared rays.

[0011] The above-mentioned blocking member can be made conductive by mixing the material used to manufacture the blade with a conductive material.

[0012] It may include an auxiliary blade arranged at the front and rear of the blade and blocking heat and infrared rays generated at the rear of the blade.

[0013] The present invention provides an electric fan including a motor that generates rotational force, a motor portion that is formed to protrude forward of the motor and includes a motor shaft that rotates by the rotational force of the motor, a fan portion that is disposed in front of the motor portion and is connected to the motor shaft and rotates by receiving rotational force from the motor, and a cover portion that protects the fan portion, wherein the fan portion includes a body that is connected to the motor shaft, a plurality of blades that are formed spaced apart from each other on an outer surface of the body, and a blocking portion that is disposed on the blades and blocks infrared rays generated from the rear of the blades from transmitting to the front of the motor portion.

[0014] The above plurality of blades may be formed such that each end is connected to the body, extends radially, and is spaced apart from each other.

[0015] The area ratio of the plurality of blades to the area between the blade and the adjacent blade may be 90% or more and 100% or less.

[0016] The plurality of blades may include a front blade positioned forward with respect to the body, and a rear blade positioned rearwardly from the front blade and positioned rearward with respect to the body.

[0017] The front blade and the rear blade may be arranged to be spaced apart from each other in the front and rear directions, and the rear blade may be arranged in the space between the front blade and the front blade, thereby reducing the infrared transmittance of the space between the front blade and the rear blade.

[0018] The above blocking member can be attached to the surfaces of the plurality of blades using a conductive material such as a conductive film, a metal thin film, or a transparent conductive film that blocks infrared rays.

[0019] The above blocking member can be coated on the surfaces of the plurality of blades using a paint such as a conductive polymer that blocks infrared rays.

[0020] The above-mentioned blocking member may include the first coating layer formed as a metal thin film or a conductive thin film layer on the front surface of the plurality of blades, the second coating layer formed between the first coating layer and the blades and coated with a primer coating or the like to increase the adhesion of the first coating layer and thereby increase durability and reliability, and the third coating layer formed on the upper portion of the first coating layer and coated with a primer coating or the like to increase the adhesion of the first coating layer and thereby increase durability and reliability.

[0021] The above blocking part can be made into a conductive blade by mixing the material used to make the blade with a conductive material.

[0022] According to the fan according to the present invention, a heat blocking plate disposed between the motor unit and the fan unit and blocking heat and infrared rays generated from the motor unit may be further included.

[0023] According to the fan according to the present invention, an auxiliary heat blocking plate may be further included, which is arranged in front of the fan section corresponding to the motor section and blocks heat and infrared rays generated from the motor section.

[0024] According to the IR blocking blade and the fan using the same according to the present invention, a blade that blocks infrared rays generated from a motor is arranged to prevent infrared rays from being transmitted to a user who is exposed to the wind.

[0025] In addition, the IR blocking blade according to the present invention and the fan using the same can prevent skin heating due to infrared rays, thereby providing a comfortable and cool breeze to the user.

[0026] Figure 1 is a plan view of a fan according to a first embodiment of the present invention.

[0027] Fig. 2 is a front view showing the fan section of Fig. 1.

[0028] Figure 3 is a plan view showing a blocking part of a fan according to a second embodiment of the present invention.

[0029] Figure 4 is a plan view showing a blocking part of a fan according to a third embodiment of the present invention.

[0030] Fig. 5 is a plan view showing a blocking part of a fan according to a fourth embodiment of the present invention.

[0031] Figure 6 is a plan view of a fan according to a fifth embodiment of the present invention.

[0032] Fig. 7 is a front view showing the fan section of Fig. 6.

[0033] Figure 8 is a plan view of a fan according to the sixth embodiment of the present invention.

[0034] While the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent alternative embodiments are possible. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

[0035] Fig. 1 is a plan view of a fan (100) according to a first embodiment of the present invention. Referring to Fig. 1, the configuration of a fan (100) according to one embodiment of the present invention will be described.

[0036] The above fan (100) includes a motor part (110), a fan part (120), and a cover part (130).

[0037] The above motor section (110) is composed of a motor (111) that generates rotational force and a motor shaft (112) that is formed by protruding forward of the motor (111) and rotates by the rotational force of the motor.

[0038] The fan part (120) is positioned in front of the motor part (110), and is connected to the motor shaft (112) to receive rotational force from the motor (111) and rotate. In addition, the fan part (120) of the present invention may be formed of a transparent or translucent plastic material.

[0039] And the fan part (120) includes a body (121), a plurality of blades (122) and a blocking part (123).

[0040] The above body (121) is connected to the above motor shaft (112). The above plurality of blades (122) are formed spaced apart from each other on the outer surface of the body (121), and each end is connected to the body (121), and are formed to extend radially and spaced apart from each other.

[0041] The above blocking part (123) is placed on the blade (122) and blocks infrared rays generated at the rear of the blade (122) from penetrating to the front of the motor part (110).

[0042] The above cover part (130) surrounds the fan part (120), protects the fan part (120) positioned inside, and can prevent a user from colliding with the plurality of rotating blades (122) from the outside.

[0043] Figure 2 is a front view showing a fan section (120) of a fan (100) according to a first embodiment of the present invention.

[0044] The blade (122) rotation area is an area where wind is generated as the blade (122) rotates, and can be divided into an area occupied by the blade (122) and an area other than the blade (122). In the blade (122) rotation area, the area other than the blade (122) is an area where infrared rays pass without passing through the blade (122). Therefore, the area of ​​the blade (122) must mostly fill the blade (122) rotation area in order to apply the infrared blocking function applied to the blade (122).

[0045] In the above blade (122) structure, the closer the ratio of the blade (122) area to the blade (122) rotation area is to 100%, the more the blade (122) can block infrared rays.

[0046] According to the fan (100) according to the present invention, the area between the blade (122) and the adjacent blade (122) and the area ratio of the plurality of blades (122) determine the degree of blocking infrared rays.

[0047] At this time, if the area ratio is 90% or more due to the curved shape and the curvature of the corners of the blade (122) according to one embodiment of the present invention, it can be seen that infrared rays are effectively blocked.

[0048] And, if the blades (122) of the fan (100) according to one embodiment of the present invention are made to overlap or have a shape that eliminates the corner curvature, the area ratio capable of blocking infrared rays can be made up to 100%.

[0049] The fan section (120) of the fan (100) of Fig. 2 showed a state in which the area ratio capable of blocking infrared rays of the blade (122) for the rotation area (RA) was 95%.

[0050] Even when the side surfaces of the blades (122) are arranged to overlap each other when viewed from the front, the area area (A) that does not overlap is generated due to the curvature of the blades (122), so the area ratio of the blades (122) capable of blocking infrared rays with respect to the rotation area (RA) may not be 100%.

[0051] Hereinafter, with reference to FIGS. 3 to 5, the structure of the blocking portions (123a, 123b, 123c) arranged on the surfaces of the plurality of blades (122) according to the second to fourth embodiments of the present invention will be described.

[0052] Figure 3 is a plan view showing a blocking part (123a) of a fan (100) according to a second embodiment of the present invention.

[0053] Referring to FIG. 3, the blocking part (123a) of the fan (100) according to the first embodiment of the present invention is a drawing showing a blocking part (123a) in the form of a film arranged on the back of the plurality of blades (122).

[0054] The above blocking part (123a) blocks infrared rays generated from the motor part (110) by arranging a conductive film, such as a conductive film, a metal thin film, or a transparent conductive film, on the back of the plurality of blades (122).

[0055] In addition, the blocking member (123a) may be any metal thin film that blocks infrared rays, but commonly used metal thin films include aluminum (Al), titanium (Ti), nickel (Ni), chromium (Cr), copper (Cu), silver (Ag), tin (Sn), indium (In), zinc (Zn), iron (Fe), etc., or alloys thereof such as stainless steel (SUS), g-Sn, and Al-Zn. In addition, metal oxides such as ITO (Indium-Tin Oxide), AZO (Aluminum-zinc Oxide), and ATO (Antimon-Tin Oxide), and conductive polymers having conductivity such as PEDOT, may also be used.

[0056] Figure 4 is a plan view showing a blocking part (123b) of a fan (100) according to a third embodiment of the present invention.

[0057] Referring to FIG. 4, the blocking part (123b) of the fan (100) according to the second embodiment of the present invention is a drawing showing a blocking part (123b) in the form of a coating placed on the front of the plurality of blades (122).

[0058] The above blocking part (123b) blocks infrared rays generated from the motor part (110) by coating a conductive polymer or other paint on the front surface of the plurality of blades (122).

[0059] The method for coating the blocking portion (123b) on the above blade (122) can be produced by applying a PVD method or CVD method such as a vacuum deposition method or a magnetron sputtering method, and can also be produced by coating a conductive polymer like paint using a spray method or applying a dip coating method.

[0060] The above blocking portion (123b) includes a first coating layer (CL1), a second coating layer (CL2), and a third coating layer (CL3).

[0061] The above first coating layer (CL1) is formed as a metal thin film or a conductive thin film layer on the front surface of the blade (122).

[0062] The second coating layer (CL2) is formed between the first coating layer (CL1) and the blade (122), and is coated with a primer coating or the like to increase the adhesion of the first coating layer (CL1), thereby increasing durability and reliability.

[0063] The third coating layer (CL3) is formed on top of the first coating layer (CL1) and is coated with a primer coating or the like to increase the adhesion of the first coating layer (CL1) and thereby increase durability and reliability.

[0064] In addition, the second coating layer (CL2) and the third coating layer (CL3) can increase the durability and reliability of the blade (122) by forming a coating layer on the front and back of the blade (122) using a spraying method or a dip coating method by making a conductive polymer like paint.

[0065] Figure 5 is a plan view showing a blocking part (123c) of a fan (100) according to a fourth embodiment of the present invention.

[0066] Referring to FIG. 5, the blocking part (123c) of the fan (100) according to the fourth embodiment of the present invention is a drawing showing a state in which the plurality of blades (122) and the blocking part (123c) are formed as one piece.

[0067] The above blocking part (123c) is made by mixing the material forming the blade (122) with a conductive material to produce a conductive blade (122) and blocks infrared rays generated from the motor part (110).

[0068] By manufacturing the blade (122) and the blocking part (123c) as an integral body, a conductive blade (122) can be manufactured by dispersing a conductive material such as CNT or PEDOT in the main material of the blade (122).

[0069] The blade (122) should be made of a material that is visually transparent and offers a cooler feel than an opaque material, and is inexpensive. However, a transparent conductive film such as ITO (Indium-Tin Oxide) has the advantage of maintaining transparency, although the coating and deposition costs are higher than those of a simple metal thin film.

[0070] Hereinafter, the structure of the fan (200, 300) according to the fifth and sixth embodiments of the present invention will be described. Here, any overlapping components of the fan (200, 300) according to the fifth and sixth embodiments of the present invention that have been previously mentioned will be omitted in the following description.

[0071] FIG. 6 is a plan view of a fan (200) according to a fifth embodiment of the present invention, and FIG. 7 is a front view showing a fan section (220) of a fan (200) according to a fifth embodiment of the present invention.

[0072] Referring to FIGS. 6 and 7, the fan section (220) of the fan (200) is formed with a blade (222) having a two-layer structure, rather than a blade (122) having a one-layer structure like the fan section (120) of the fan (100) of the first embodiment.

[0073] The plurality of blades (222) of the fan part (220) include a front blade (222a) positioned forward with respect to the body (221), and a rear blade (222b) positioned rearwardly from the front blade (222a) and positioned rearward with respect to the body (221).

[0074] In addition, the front blade (222a) and the rear blade (222b) are arranged spaced apart from each other in the front and rear, and the rear blade (222b) is arranged in the space between the front blade (222a) and the front blade (222a), thereby reducing the infrared transmittance of the space between the front blade (222a) and the front blade (222a).

[0075] Even with a blade (222) having a two-layer structure, such as the plurality of blades (222) of the fan section (220), the area of ​​the blade (222) relative to the rotation area (RA) can be formed to be 90% or more to block infrared rays, and for people located on the left and right sides in front of the fan (200), the area of ​​the blade (222) can be expanded to about 120% to easily block infrared rays.

[0076] Figure 8 is a plan view of a fan (300) according to the sixth embodiment of the present invention.

[0077] Referring to FIG. 8, the fan (300) includes a motor section (310), a fan section (320), a cover section (330), a heat blocking plate (340), and an auxiliary heat blocking plate (350).

[0078] Unlike the aforementioned fan (100, 200) in which the plurality of blades (122, 222) mentioned above are made of a material that blocks heat and infrared rays, the above-mentioned fan (300) blocks heat and infrared rays generated from the motor unit (310) by arranging a disk-shaped heat-blocking plate (340) and an auxiliary heat-blocking plate (350).

[0079] The above heat blocking plate (340) is placed between the motor unit (310) and the fan unit (320) and blocks heat and infrared rays generated from the motor unit (310), and the auxiliary heat blocking plate (350) is placed in front of the fan unit (310) corresponding to the motor unit (310) and blocks heat and infrared rays generated from the motor unit (310).

Claims

1. In a blade unit that is rotatably provided on a fan and includes a plurality of blades, An IR blocking blade disposed on the blade and including a blocking member that blocks infrared rays generated at the rear of the blade from transmitting to the front of the blade.

2. In claim 1, An IR blocking blade having a ratio of the area of ​​a plurality of blades between the blade and adjacent blades of 90% or more and 100% or less.

3. In claim 1, The above blocking member is, An IR blocking blade attached to the surfaces of the plurality of blades using a conductive material such as a conductive film, a metal thin film, or a transparent conductive film that blocks infrared rays.

4. In claim 3, The above blocking member is, An IR blocking blade that coats the surfaces of the plurality of blades using a paint such as a conductive polymer that blocks infrared rays.

5. In claim 4, The above blocking member is, A conductive IR blocking blade made by mixing the material used to make the above blade with a conductive material.

6. In claim 1, An IR blocking blade including an auxiliary blade arranged at the front and rear of the blade and blocking heat and infrared rays generated at the rear of the blade.

7. A motor section including a motor that generates rotational force and a motor shaft that is formed to protrude forward of the motor and rotates by the rotational force of the motor; A fan section positioned in front of the motor section and connected to the motor shaft to receive rotational force from the motor and rotate; Including a cover part that protects the above fan part, The above fan part, A body connected to the above motor shaft, A plurality of blades formed spaced apart from each other on the outer surface of the body, A fan including a blocking member arranged on the blade and blocking infrared rays generated at the rear of the blade from transmitting to the front of the motor unit.

8. In claim 7, The above multiple blades, A fan in which each of the first and second ends is connected to the body, extends radially, and is formed spaced apart from each other.

9. In claim 8, A fan in which the area ratio of a plurality of blades is 90% or more and 100% or less compared to the area between the blade and the adjacent blade.

10. In claim 8, The above multiple blades, A front blade positioned forward based on the above body, A fan including a rear blade arranged spaced behind the front blade and arranged at the rear with respect to the body.

11. In claim 10, The above front blade and rear blade, A fan characterized in that the front blades are spaced apart from each other in the front and rear directions, and the rear blades are respectively placed in the space between the front blades, thereby reducing the infrared transmittance of the space between the front blades.

12. In claim 7, The above blocking part is, A fan using conductive materials such as a conductive film, a metal thin film, or a transparent conductive film that blocks infrared rays, attached to the surfaces of the plurality of blades.

13. In claim 7, The above blocking part is, A fan in which the surfaces of the plurality of blades are coated with a paint such as a conductive polymer that blocks infrared rays.

14. In claim 13, The above blocking part is, The first coating layer formed as a metal thin film or a conductive thin film layer on the front surface of the plurality of blades, The second coating layer is formed between the first coating layer and the blade, and is coated with a primer coating or the like to increase the adhesion of the first coating layer, thereby increasing durability and reliability. A fan including a third coating layer formed on the upper part of the first coating layer and coated with a primer coating or the like to increase the adhesion of the first coating layer and thereby increase durability and reliability.

15. In claim 7, The above blocking part is, A fan that produces blades that are conductive by mixing the material used to produce the above blades with a conductive material.

16. In claim 7, An electric fan further comprising a heat blocking plate disposed between the motor unit and the fan unit and blocking heat and infrared rays generated from the motor unit.

17. In claim 16, A fan further comprising an auxiliary heat blocking plate disposed in front of a fan section corresponding to the motor section and blocking heat and infrared rays generated from the motor section.

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