Portable fan

Abstract

This invention provides a portable fan that can lower the temperature of the airflow by simply removing the heat of vaporization of water. [Solution] A portable fan equipped with a cooling aid C1 that is detachably attached to the front of the fan blades of the fan body, wherein the cooling aid has a water-retaining net N1 made of water-retaining wires A1 formed in a planar mesh shape, which is arranged in the internal space 14 of an annular frame 11 that is detachably attached to the front of the fan body, so as to cover almost the entire internal space, and the cooling performance is enhanced by vaporizing the water that is supplied from a water storage tank fixed to the upper end of the annular frame through the water-retaining wires constituting the water-retaining net by the airflow.

Description

Technical Field

[0001] The present invention relates to a portable fan equipped with a cooling aid that is detachably attached to the front surface of the blower blade of the fan body.

Background Art

[0002] As a portable fan with enhanced cooling performance, there is one disclosed in Patent Document 1. Water supplied from a water storage part 50 installed at the upper end of an outer annular part 5 is atomized by ultrasonic vibration by a nebulizer 3 incorporated in a handle part and sprayed, thereby enhancing the cooling performance. Since mist is mixed into the air flow, the cooling performance is enhanced. However, since the user holds this portable fan with one hand and places it near the face for use, a part of the scattered mist may adhere to the face, causing discomfort.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a portable fan that can lower the temperature of an air flow by simply depriving water of its heat of vaporization.

Means for Solving the Problems

[0005] The invention according to claim 1 for solving the above problems is a portable fan equipped with a cooling aid that is detachably attached to the front surface of the blower blade of the fan body, The cooling aid is characterized in that a water-retaining mesh, made of water-retaining wires formed in a planar mesh, is arranged in the internal space of an annular frame that can be attached to and removed from the front of the fan body, so as to cover almost the entire internal space, and the cooling performance is enhanced by vaporizing the water that is supplied from a water storage tank fixed to the upper end of the annular frame through the water-retaining wires constituting the water-retaining mesh by the airflow.

[0006] According to the invention of claim 1, water in the water storage tank gradually permeates the water-retaining wires constituting the water-retaining mesh body attached to the front of the fan blades of the fan body, and after a predetermined time, the water is supplied to the entire water-retaining wires. When the amount of water decreases, additional water is supplied by permeation, so that the water-retaining wires are always kept moist. In this state, when the airflow passes from the back to the front of the water-retaining mesh body due to the rotation of the fan blades, the large speed of passage forces the moisture contained in the water-retaining wires to vaporize, thereby absorbing heat from the surroundings, lowering the temperature of the airflow, and enhancing the user's feeling of coolness. The water-retaining wires constituting the water-retaining mesh body can be arranged on the entire surface of the fan blades to create any planar shape by bending or curving them, or by partially maintaining straight lines, thereby maintaining the necessary airflow space and increasing the density of the water-retaining wires relative to the area of ​​the front of the fan blades, so that the amount of heat generated by vaporization can be increased and the cooling performance can be enhanced. Furthermore, even when the fan is not in use, water penetration into the water-retaining wire continues, thus maintaining a constantly moist state for the water-retaining wire.

[0007] The invention of claim 2 is characterized in that, in the invention of claim 1, the water-retaining wire is configured such that the water-retaining wire covers the outer circumference of a plastically deformable core material.

[0008] According to the invention of claim 2, the presence of a plastically deformable core material allows the water-retaining wire to be deformed into any shape, and the deformed shape can be maintained without being distorted.

[0009] The invention of claim 3 is characterized in that, in the invention of claim 2, the water-retaining net body is shaped by bending a single water-retaining wire into a net-like form.

[0010] According to the invention of claim 3, since the water from the water storage tank is supplied to a single water-retaining wire without being branched, the amount of water supplied to the water-retaining wire per unit time increases, making it easier to keep the water-retaining wire in a moist state. [Effects of the Invention]

[0011] According to this invention, water in the water storage tank gradually permeates the water-retaining wires that constitute the water-retaining mesh body positioned in front of the fan blades of the fan body. After a predetermined time, the water is supplied to the entire water-retaining wire, and as the amount of water decreases, additional water is supplied through permeation, so that the water-retaining wire is always kept moist. In this state, when the airflow passes from the back to the front of the water-retaining mesh body due to the rotation of the fan blades, the large speed of passage forces the moisture contained in the water-retaining wires to vaporize, thereby removing heat from the surroundings, lowering the temperature of the airflow, and enhancing the user's feeling of coolness. [Brief explanation of the drawing]

[0012] [Figure 1] This is a perspective view of the portable fan F with the cooling aid C1 attached. [Figure 2] This is also a disassembled perspective view. [Figure 3] This is also a side cross-section. [Figure 4] (a) and (b) are perspective views of the cooling aid C1 from different directions. [Figure 5] This is a front cross-sectional view of the cooling aid C1. [Figure 6] This is a front view of a cooling aid C2 equipped with a water-retaining mesh N2. [Figure 7] (a) is a front view of the cooling aid C3 equipped with a water-retaining mesh N3, and (b) is a cross-sectional view of (a) along line XX. [Figure 8] (a) to (c) are partial perspective views of the water-retaining wires A1, A2, and A3. [Modes for carrying out the invention]

[0013] The present invention will be described in more detail below with reference to several optimal embodiments. In the portable fan F shown in Figures 1 to 6, the fan body 10 has a blower blade 3 arranged inside a resin cover K formed by integrating front and rear cover parts 1 and 2. The blower blade 3 is attached to the drive shaft (not shown) of a motor 4 fixedly positioned in the center of the inner surface of the rear cover part 2. The front cover part 1 has a flat front surface formed by connecting an outer circular ring plate part 1a and a central disc part 1b with a number of radially arranged straight connecting plates 1c, and the spaces between each straight connecting plate 1c are ventilation openings 1d. The rear cover part 2 has an outer circular ring plate part 2a and a central disc part 2b connected by a number of radially arranged curved connecting plates 2c, forming a three-dimensional shape that bulges out to the rear, and the spaces between each curved connecting plate 2c are ventilation openings 2d. The fan body 10 is connected to the connecting part 5a at the upper end of the handle 5 so as to be able to tilt in the front-rear direction.

[0014] The cooling aid C1 of Embodiment 1 of the present invention is detachably attached to the outside of the outer circular ring plate portion 1a so as to cover the front surface of the front cover portion 1 of the fan body 10. The water contained in the water-retaining wires A1 (A2, A3) that constitute the water-retaining mesh body N1 arranged on the front surface of the front cover portion 1 is vaporized by the airflow generated by the fan body 10, thereby removing heat from the surroundings, lowering the ambient temperature, and improving the cooling performance of the fan body 10.

[0015] As shown in Figures 3 to 5, the cooling aid C1 has a configuration in which a water-retaining net N1 is formed by curving a single water-retaining wire A1 (A2, A3) into a mesh-like structure, with multiple incomplete circles of different radii concentrically arranged and continuous via connecting parts, within the internal space 14 of an annular frame 11 fitted to the outside of the outer circular ring plate portion 1a of the front cover portion 1 of the fan body 10. One end (upper end) of the water-retaining wire A1 (A2, A3), which is formed in a straight line, is inserted from the inside into an L-shaped insertion hole 11a formed in the highest part of the annular frame 11, and the other end (lower end) of the water-retaining wire A1 (A2, A3), which is formed in a straight line, is positioned on the opposite side from the one end (upper end) with respect to the center E of the water-retaining net body N1, and is inserted from the inside into a straight insertion hole 11b formed in the lowest part of the annular frame 11, thereby positioning the water-retaining net body N1 in the space inside the annular frame 11. An insertion hole 11c into which the discharge pipe portion 22 of the water storage tank T can be inserted is formed communicating with the L-shaped insertion hole 11a formed in the highest part of the annular frame 11, and the tank T of the water storage tank T is positioned facing downwards in the insertion hole 11c. Furthermore, an annular stopper portion 11d is formed on the inner circumferential surface of the annular frame 11 to determine the fitting width when fitting it onto the outer circumferential ring plate portion 1a of the front cover portion 1, and a notch portion 11e is formed on the back side thereof to avoid interference with the connecting portion 5a of the handle 5.

[0016] As shown in Fig. 8(a), the water retention wire material A1 has a strip-shaped sponge material 13 that can penetrate water wound spirally around the outer periphery of a plastically deformable metal core material 12 in a state without gaps. The water supplied from the water storage tank T to one end of the sponge material 13 gradually penetrates toward the other end of the sponge material 13 by the penetration action, and the water supplied to the entire sponge material 13 is retained for a predetermined time. As another water retention wire material A2, as shown in Fig. 8(b), a metal core material 16 with a square cross-section is covered with a long sponge material 17 also having a hollow square cross-section. The long sponge material 17 is opened on both sides and then restored to its original shape to easily cover the entire metal core material 16, and a cut surface 17a is formed in the longitudinal direction. As still another water retention wire material A3, as shown in Fig. 8(c), a wire material 18 that can penetrate water is wound spirally around the outer periphery of the metal core material 12 with gaps. Since there are predetermined gaps in the wound state of the wire material 18, there is an advantage that the penetration speed, which is the penetration length per unit time, is increased. Further, since the water retention wire materials A1 to A3 have a plastically deformable metal core material 12 inside, various water retention mesh bodies including the water retention mesh body N1 of the above overall shape can be formed. Any of the water retention wire materials A1 to A3 can be used to form the water retention mesh body N1.

[0017] The water storage tank T includes a tank portion 21 that stores the water W supplied by the penetration action of the sponge material 13, the long sponge material 17, or the wire material 18 of the water retention wire materials A1 to A3 constituting the water retention mesh body N1, and a discharge cylinder portion 22 integrally formed at one end of the tank portion 21. The discharge cylinder portion 22 is inserted into the insertion hole 11c of the annular frame 11 in an upside-down posture for use.

[0018] The water discharged from the discharge cylinder portion 22 of the water storage tank T by the action of gravity is supplied to the sponge material 13 (long sponge material 17, thread material 18) of one water retention wire material A1 (A2, A3) that constitutes the water retention net body N1 and is bent into the above shape. Due to the penetration action of the sponge material 13 (long sponge material 17, thread material 18), the water penetrates sequentially toward the tip and is retained inside the sponge material 13 (long sponge material 17, thread material 18). In particular, the water retention net body N1 is formed by bending one water retention wire material A1 (A2, A3). Since there is no branch in the water penetration path, the water supply amount per unit time to the water retention wire material A1 (A2, A3) increases, and the wet state of the water retention wire material A1 (A2, A3) is easily maintained.

[0019] When an air flow from the back to the front of the water retention net body N1 occurs with the water retention net body N1 arranged on the front surface of the fan body 10, heat is taken away from the air forming the air flow due to the vaporization of the moisture contained in the sponge material 13 (long sponge material 17, thread material 18) of the water retention wire material A1 (A2, A3), and the air temperature drops somewhat, thereby generating a cooling effect.

[0020] As shown in FIG. 6, the water retention net body N2 that constitutes the cooling auxiliary tool C2 of the second embodiment of the present invention has a plurality of water retention wire materials A2 bent in a wave shape arranged between a horizontal water supply pipe 31 and a lower end support pipe 32 that are arranged in parallel with each other at a predetermined interval, and their upper and lower ends are inserted into and connected to the respective pipes 31, 32. Both ends of the horizontal water supply pipe 31 are closed. The lower end of the vertical water supply pipe 33 and the upper end of the lower support rod 34 are inserted into the central portions in the longitudinal directions of the respective pipes 31, 32. The upper end of the vertical water supply pipe 33 is inserted into an insertion hole 35 formed in the annular frame 11 to supply the water in the water storage tank T, and the lower end of the lower support rod 34 is inserted into the annular frame 11.

[0021] Water in the water storage tank T is supplied to each water-retaining wire A2 via the vertical water supply pipe 33 and the horizontal water supply pipe 31, thereby maintaining a moist state in the long sponge material 17 that constitutes each water-retaining wire A2. When air is blown, the moisture in the long sponge material 17 evaporates, cooling the airflow.

[0022] Next, with reference to Figure 7, the cooling aid C3 of Example 3 will be described. The water-retaining net body N3 is formed by entangling multiple thin threads to create numerous synthetic threads 41 which are arranged at predetermined intervals in the left-right direction. Each adjacent synthetic thread 41 is connected in a zigzag pattern by a single thread 42, forming a circular shape overall. The cooling aid C3 has a configuration in which the water-retaining net body N3 is placed in the internal space of an annular frame 43, which is formed by bonding two identical divided annular frames 43a together, with both ends of the circular water-retaining net body N3 sandwiched between them. The synthetic threads 41 and single threads 42 form the water-retaining wire A4.

[0023] The discharge pipe portion 22 of the water storage tank T is inserted into the upper end of the annular frame 43. The water discharged from the discharge pipe portion 22 is stored in a temporary storage portion 44 formed on the inner circumference side of the upper end of the annular frame 43. The moisture permeates the synthetic yarn material 41 and single yarn material 42, one end of which is inserted into the temporary storage portion 44. Subsequently, the permeated moisture sequentially permeates the synthetic yarn material 41 and single yarn material 42 that constitute the interconnected water-retaining net body N3, thereby retaining water throughout the entire water-retaining net body N3.

[0024] The cooling aid C3 is attached to the front of the front cover portion 1 of the fan body 10, and the airflow from behind the water-retaining mesh N3 toward the front promotes the evaporation of moisture contained in the water-retaining wire A4 of the water-retaining mesh N3, thereby lowering the temperature of the airflow. Since the water-retaining mesh N3 is positioned across the entire front opening of the front cover portion 1, the cooling effect of the airflow is significant.

[0025] Although the present invention has been described above with reference to several embodiments, any shape other than those described above is included in the present invention as long as a planar mesh-like water-retaining net is formed by bending or folding the water-retaining wire into any shape, or by partially maintaining a straight line. [Explanation of symbols]

[0026] A1~A4: Water retention wire C1~C3: Cooling aid F: Portable fan K: Cover N1~N3: Water retention network T: Water storage tank W:Water 3: Fan blades 11,43: Circular frame (ring frame) 12,16: Metal core material (plastically deformable core material) 13: Sponge material (water-retaining wire material) 14: Interior space 18: Thread material (water-retaining wire material) 41: Synthetic thread material (water-retaining wire material) 42: Single thread material (water-retaining wire material)

Claims

1. A portable fan equipped with a cooling aid that is detachably attached to the front of the fan blades of the fan body, The cooling aid is a portable fan characterized by having a water-retaining mesh body, in which water-retaining wires are formed in a planar mesh pattern, arranged in the internal space of an annular frame that can be attached to and removed from the front of the fan body, so as to cover almost the entire internal space, and by vaporizing the water that is supplied from a water storage tank fixed to the upper end of the annular frame by airflow, thereby enhancing the cooling performance.

2. The portable fan according to claim 1, characterized in that the water-retaining wire is configured such that the water-retaining wire covers the outer circumference of a plastically deformable core material.

3. The portable fan according to claim 2, characterized in that the water-retaining mesh body is shaped by bending a single water-retaining wire into a mesh-like form.

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