JP2008224171A - Humidifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a humidifier small in size and energy-saving by forming a humidifying filter with a lower pressure loss with no occurrence of water film at an opening of the humidifying filter in the vaporization type humidifier. <P>SOLUTION: The humidifier humidifies air by blowing air to the humidifying filter 1 wet with water supplied from a water tank 6 serving as a water supply means. The humidifying filter 1 is formed of a permeable and water-resistant base material composed of a first coarse base material part 2 and a second fine base material part 3. Water is supplied in the order of the water tank 6 serving as the water supply means, the first base material part 2 and the second base material part 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a humidifying filter and a humidifying device using the same.

  Conventionally, as this type of humidifier, a rotatable cylindrical water absorption filter having one end opened is provided, and air sent from a fan is fed into the cylindrical filter from the open portion of the water absorption filter, and further to the outer periphery. The thing characterized by letting it pass to the side is known (for example, refer patent document 1).

  Hereinafter, the humidifier will be described with reference to FIG.

As shown in FIG. 8, the cylindrical humidifying filter 101 having one end opened has water absorption, and rotates so that a part of the humidifying filter 101 is immersed in the water stored in the water tank 102. A fan 103 provided upstream of the humidifying filter 101 sends air into the humidifying filter 101 and further passes it to the outer peripheral side to give humidity to the air, and then sends the air into the room from the humidifying device.
Japanese Patent Laid-Open No. 2004-226023

  In such a conventional humidifying device, when the humidifying filter is immersed in water, a water film is formed at the opening of the filter due to the surface tension of the water, so that the pressure loss of the humidifying filter tends to be high. Therefore, it is necessary to devise such as increasing the size of the fan to increase the static pressure, and there is a problem that the size and power consumption of the device are likely to increase.

  In order to achieve the above object, the humidifying device of the present invention is a humidifying device that humidifies air by blowing air to a humidifying filter moistened with water supplied from a water supply means, wherein the humidifying filter has air permeability and water resistance. The base material is composed of a first base material portion having a coarse mesh and a second base material portion having a fine texture, water supply means, then the first base material portion, and then the first base material portion. Water is supplied in the order of the two base material portions.

  Further, a water film is not formed on the first base portion of the humidifying filter.

  In addition, the first base portion of the humidifying filter is made hydrophilic or hydrophobic.

  Moreover, the shape of the eyes of the first base portion of the humidifying filter is substantially circular.

  Moreover, only the 1st base material part of a humidification filter is made to contact the water supplied from the water supply means.

  Further, the first base portion of the humidifying filter has no water absorption, and the second base portion has water absorption.

  Moreover, the 1st base material part of a humidification filter is thicker than a 2nd base material part, It is characterized by the above-mentioned.

  Moreover, the pressure loss of the 1st base material part of a humidification filter and a 2nd base material part is the same, or the 1st base material is lower, It is characterized by the above-mentioned.

  Further, the humidifying filter is rotatable, and is characterized in that the second base material portion is provided closer to the center axis of rotation and the first base material portion is provided farther.

  Further, in the humidifying device in which a motor is connected to the humidifying filter and the humidifying filter is rotated by the motor, the motor is provided on the upstream side of the humidifying filter.

  Moreover, the end surfaces of the first base material portion and the second base material portion are aligned on the downstream side of the humidifying filter.

  The humidifying filter includes an antibacterial material.

  In addition, the humidifying filter includes a mold prevention material.

  ADVANTAGE OF THE INVENTION According to this invention, a humidification filter with a low pressure loss and a compact can be obtained, and the humidification apparatus with a small apparatus size and energy saving can be provided.

  The humidifying device of the present invention is a humidifying device that humidifies air by blowing air to a humidifying filter moistened with water supplied from a water supply means, wherein the humidifying filter is made of a base material having air permeability and water resistance, The base material is composed of a coarse first substrate portion and a fine second base portion, first the water supply means, then the first base portion, and then the second base portion. In this order, water is supplied. The first base part having a coarse mesh to which water is supplied from the water supply means contains a large amount of water. However, since the grain is coarse, it is difficult to form a water film. A small amount of water is supplied to the second base material portion to which water is supplied because water is vaporized by the first base material portion. As a result, it is difficult to form a water film on the second base material portion, and since the eyes are fine, the surface area can be widened, so that the vaporization efficiency is improved. As a result, it is possible to obtain a compact and energy-saving humidifier equipped with a vaporization filter that is difficult to form a water film and has a low pressure loss and good vaporization efficiency.

  In addition, a water film is not formed on the first base material part, and since no water film is formed, excessive moisture does not exist on the humidifying filter and pressure loss is reduced. Has the effect of being able to

  In addition, the first substrate portion is characterized in that it is hydrophilic or hydrophobic, and if it is hydrophilic, the water film is not formed by the water on the filter being drawn to the substrate, Moreover, if it is hydrophobic, the water on the filter is repelled from the base material, so that a water film is not formed, so that the pressure loss of the humidifying filter can be reduced. In addition, when the humidifying filter is hydrophobic, microorganisms such as mold and fungi are difficult to grow quickly, and it is possible to obtain a clean humidifying filter.

  Moreover, the shape of the eyes of the first base material portion is substantially circular. The circular shape has an effect that it is difficult to form a water film because the shortest distance (diameter) of the eyes is uniform. Here, the shape does not need to be strictly circular, and the filter shape may be a hexagon that is easy to make with few wasted walls.

  Moreover, only the 1st base material part of a humidification filter is made to contact the water supplied from the water supply part. When the second substrate portion of the humidifying filter is brought into contact with the water supplied from the water supply means, the eyes are fine and a water film is easily formed, so the entire humidifying filter is not brought into contact, but the eyes are rough. Only the 1st base material part with which a water film is hard to be formed is made to contact water. Thereby, a water film is not formed on a humidification filter, and it has the effect | action that the pressure loss of a humidification filter can be made low. Water is supplied to the second base material portion when water held by the first base material portion is transmitted.

  In addition, the first base material portion has no water absorption, and the second base material portion has water absorption. Therefore, it is easy to dry when the operation is stopped, and it is possible to obtain a clean humidifying filter that is difficult for mold and microorganisms to propagate. In addition, by providing water absorption to the second base material portion, water supplied from the first base material portion can be efficiently distributed to the entire second base material portion, improving the humidification efficiency. It has the effect that it can be made.

  In addition, the first base material portion is thicker than the second base material portion, and the pressure loss is controlled by increasing the thickness of the first base material portion having a coarse mesh. There is little difference in pressure loss with the base material part of 2, and it has the effect | action that a wind can be uniformly flowed through a humidification filter. Moreover, since vaporization progresses uniformly, it has the effect | action that a scale and a mineral component do not accumulate in a specific part.

  The first base material and the second base material have the same pressure loss, or the first base material is lower. The first base material portion and the second base material Since there is little difference in pressure loss with the part, it has the effect that air can flow uniformly through the humidifying filter. Also, since the wind speed distribution is small and turbulent flow is unlikely to occur, a low-noise humidifier can be obtained. Further, since the evaporation of water proceeds uniformly, there is an effect that scales and mineral components are not deposited on a specific portion of the humidifying filter. When the pressure loss is lower in the first base material, the wind flows more through the first base material than in the second base material. At this time, since the amount of vaporization of water is larger in the first base material, the amount of scale deposits such as mineral components in the water is increased. However, since the eyes are rough, the effect that the scale can be easily cleaned is also obtained. .

  Further, the humidifying filter is rotatable, and is characterized in that the second base material is provided closer to the center axis of rotation and the first base material is provided farther away, and is coarse. It has the effect | action that a 1st base material part can be made to contact the water in a water tank preferentially, and more water can be included.

  Further, in the humidifying device in which a motor is connected to the humidifying filter and the humidifying filter is rotated by the motor, the motor is provided on the upstream side of the humidifying filter, and high humidity air does not touch the motor. Therefore, it is possible to obtain a humidifier that is less likely to cause corrosion of components and has excellent durability.

  In addition, on the downstream side of the humidifying filter, the end surfaces of the first base material portion and the second base material portion are aligned, and the second base material portion has a smaller thickness. If the motor is arranged upstream of the second base material portion, the size of the entire humidifier can be made more compact.

  Further, the humidifying filter is characterized by containing an antibacterial material, and has an effect of suppressing the growth of microorganisms by the antibacterial action of the antibacterial material and preventing the humidifying filter from generating dirt and smell.

  In addition, the humidifying filter includes a fungicidal material, and has an effect of suppressing the generation of mold by the fungicidal action of the fungicidal material and hardly causing dust and smell by the humidifying filter.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1, the humidifying filter 1 having air permeability has a hollow shape in which an outer peripheral portion includes a first base portion 2 having a coarse opening and a second base portion 3 having a fine opening inside thereof. The rotating shaft 4 and the motor 5 are connected by sealing one end of the hollow shape. The humidifying filter 1 can be rotated around a rotating shaft 4 by a motor 5. A water tank 6 as water supply means is provided at the bottom of the humidifying filter 1, and only the first base material portion 2 is in contact with the water in the water tank 6, and the second base material portion 3 is directly connected to the water in the water tank. Are arranged at positions where they do not contact. The water supplied from the water tank 6 is pumped up by the first base member 2 by the rotation of the humidifying filter 1. With the rotation of the humidifying filter 1, the pumped water moves from the first base material portion 2 to the second base material portion 3 so that the entire humidifying filter 1 is moistened. Here, the opening diameter of the first base material portion 2 is a hexagonal honeycomb shape in which the opening diameter is controlled to such an extent that a water film is not formed, and the surface is subjected to hydrophilic treatment. . The dry air sent by a blower (not shown) is humidified by passing through the hollow portion of the humidifying filter 1 in the order of the second base material portion 3 and the first base material portion 2, and the humidified air is supplied into the room. The

  With the above-described configuration, the first base material portion 2 having a large mesh size contains a large amount of water, but an effect that a water film is hardly formed can be obtained because the mesh size is rough and the water repellent treatment is performed. . Moreover, since a small amount of water is supplied to the fine second base material portion 3 and the surface area is large, an effect that vaporization efficiency is good can be obtained. Here, by using a hydrophilic or water-absorbing material for the second base material portion 3, it is possible to obtain the humidifying filter 1 in which the absorbed water has good diffusibility and the whole is wet. Since the humidifying filter 1 cannot have a water film, it can be a humidifying filter having a low pressure loss, a large surface area, and good humidifying efficiency.

  The second substrate portion only needs to have finer eyes than the first substrate portion, and an optimal shape may be selected as necessary. Further, the fineness of the second substrate need not be constant. For example, when the roughness of the first base material portion is 9 mm as the opening diameter of the opening portion, the opening diameter of the second base material portion may be set to a value smaller than that.

  As the base material of the humidifying filter, polyamide, polyimide, polyester, polystyrene, polyurethane, polyether, polyolefin, polycarbonate, acrylic, polypropylene, polyethylene, PET, ABS, copolymers and derivatives thereof, stainless steel, A ceramic porous body made of a metal such as aluminum, copper, brass, or zinc, silica, alumina or the like, paper, natural fiber, cellulose, ceramic paper, or a mixture thereof can be used. The humidifying filter of the present invention can be obtained by processing these substrates into a shape having an opening such as a honeycomb shape, a foam shape, or a slit shape.

  Examples of the material having water absorbability suitable as the second base material include woven or paper-made fibers having water absorbency such as cloth and paper. If these are processed into a sheet shape, it is easy to form a honeycomb shape. You may give the space | gap which air can pass by giving punching processing and embossing to the water absorbing material processed into the sheet form. In addition, the size and shape of the opening may be adjusted by, for example, stacking woven yarns having water absorbency or non-woven fabrics made of fibers having water absorbency. Further, a water-absorbing material may be coated or attached to a material that does not have water-absorbing property such as resin or metal to have water-absorbing property.

  The base material of the humidifying filter may be processed to be hydrophilic or hydrophobic. Hydrophilic treatment methods include impregnating an alkoxysilane solution to form a silica film on the surface, attaching a surfactant, corona discharge treatment on the substrate surface, ozone treatment, hydrogen peroxide / sulfuric acid Applying a chemical oxidation treatment with an oxidizing agent such as to impart hydrophilic groups to the substrate surface, and fixing hydrophilic particles such as silica gel, alumina, magnesium hydroxide, zeolite, diatomaceous earth to the substrate surface with an adhesive The method etc. are mentioned. By making the base material hydrophilic, the familiarity between the base material and water is improved, so that water spreads over the entire surface of the base material and a surface state in which a water film is hardly formed can be obtained.

  Hydrophobic treatment methods include impregnating the substrate with a solution of fluorine compound, alkylsilane, etc., and adding hydrophobic groups to the surface. Hydrophobic particles, such as talc and hydrophobic silica gel, are applied to the substrate surface with an adhesive. The method of immobilizing is mentioned. By making the base material hydrophobic, water is easily repelled from the base material, so that a surface state in which a water film is hardly formed can be obtained.

  As for the shape of a base material part, it is preferable that an opening part is substantially circular. The shape of the opening is related to the formation of a water film. If the shortest opening diameter of the opening is short, the water film is likely to be formed. For this reason, when the opening diameter is a uniform circle, the water film is hardly formed. In the case of a flat humidification filter, if the hexagonal openings are used, the wall surface can be made thinner and the number of openings can be increased, so that it is efficient and easy to process. Moreover, when a base material is fibrous form, it becomes difficult to form a water film, so that a wire diameter is thin.

  Moreover, a humidification filter with few formation of a water film can be obtained by making only the 1st base material part of a humidification filter contact a water supply part. Since the first base material is rough, it has a function of forming a humidified filter with a low pressure loss with little formation of a water film even when in contact with water. The water supply unit is controlled by providing a water level detection sensor and a valve so that water is supplied at a constant water level, and the distance between the rotating shaft of the humidifying filter and the water surface is maintained at a constant interval. It can be. When the humidifying filter 1 is rotated, the water supplied from the water tank 6 is pumped up by the first base material portion 2, and the water is transferred to the second base material portion 3 so that the entire humidifying filter 1 is It is a mechanism to get wet. If a material that does not absorb water is used for the first substrate and a material that absorbs water is used for the second substrate, the entire humidifying filter is wetted when the humidifying filter is rotated, and humidified when stopped. The parts other than the water contact part of the filter become dry. By adopting such a configuration, it is possible to obtain a humidifying filter that is hard to be dried when the operation is stopped and hardly generates microorganisms such as mold and fungus, and an effect that the humidifying filter can be kept clean can be obtained.

(Embodiment 2)
The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 2, the air-humidifying humidifying filter 10 includes a polyester fiber filter 11 as a first base part having a coarse opening on the outer periphery, and a fine second base part on the inside thereof. It is a disk shape provided with the corrugated filter 12 made from the pulp of, and the rotating shaft 13 and the motor 14 are connected to the center part of the said disk shape.

  The humidifying filter 10 can be rotated around a rotating shaft 13 by a motor 14. A water tank 15 as water supply means is provided at the bottom of the humidifying filter 10, and water supplied from the water tank 15 is pumped up by the polyester fiber filter 11 as the humidifying filter 10 rotates. The pumped water is transferred from the polyester fiber filter 11 to the corrugated filter 12, and the humidifying filter 10 is entirely moistened.

  FIG. 3 is a cross-sectional view of the A-A ′ portion viewed from the side of FIG. The polyester fiber filter 11 as the first base part having a coarse mesh and the corrugated filter 12 as the second base part having a fine grain have the end faces on the downstream side of the air flow in the ventilation path 16 aligned. The polyester fiber filter 11 has a thickness longer than that of the corrugated filter 12, and the opening ratio and the thickness are such that the pressure loss of the polyester fiber filter 11 and the corrugated filter 12 is the same in the wind speed range used in the humidifier. Is controlled. A rotating shaft 13 and a motor 14 are connected to the central portion of the corrugated filter 12, and the motor 14 is disposed on the upstream side of the humidifying filter 1.

  By setting it as said structure, since the pressure loss of a 1st base material part and a 2nd base material part is the same, a wind flows uniformly to the whole and the humidification filter with sufficient vaporization efficiency can be obtained. In addition, since the rotating shaft and the motor are connected to the second base material having a short thickness, the total thickness of the humidifying filter and the motor combined can be shortened, and a compact configuration can be achieved. In addition, since the motor is arranged on the upstream side of the vaporizing filter, it is possible to obtain an effect that high humidity air hardly touches the motor and troubles such as corrosion hardly occur.

  The humidifying filter may contain an antibacterial material. Examples of the antibacterial material include inorganic compounds that elute metal ions such as silver, copper, and zinc, fine metal particles of silver, copper, and zinc, silver zeolite, silver-containing zirconium phosphate, iodine compounds, phenols, and quaternary ammonium. Salts, imidazole compounds, benzoic acids, hydrogen peroxide, cresol, chlorhexidine, irgasan, aldehydes, enzyme preparations such as sorbic acid, lysozyme, cellulase, protease and other enzyme preparations, catechins, bamboo extract, hinoki extract, wasabi Examples include natural component extracts such as extracts and mustard extracts.

  Further, the humidifying filter may contain a fungicide and can be used by adding an organic nitrogen compound, a sulfur compound, an organic acid ester, an organic iodine imidazole compound, a benzazole compound or the like at an arbitrary ratio.

(Embodiment 3)
The same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 4, the air-humidifying humidifying filter 20 has a cubic shape and a water-absorbing resin filter 21 as a second base material portion having fine pores in the ventilation direction, and a coarse filter on the outer periphery thereof. It is the disk shape which adhere | attached the urethane filter 22 as a 1 base-material part.

  The water absorbent resin filter 21 is made by meandering a water absorbent sheet made of pulp, rayon and an adhesive, laminating it with a space, and imparting water resistance with an adhesive. The urethane filter 22 has a film-like part in the foamed shape together with the opening, and the material itself does not absorb water, but the membrane part serves as a water receiver to scoop up water, It comes to hold. A rotating shaft 23 and a motor 24 are connected to the center of the disc-shaped humidifying filter 20 and can be rotated about the rotating shaft 23 by the motor 24. A water tank 25 as water supply means is provided at the bottom of the humidifying filter 20, and water supplied from the water tank 25 is pumped up by the water absorbent resin filter 21 and the urethane filter 22 when the humidifying filter 20 rotates. The entire humidification filter 20 is moistened.

  Dry air sent by a blower (not shown) is humidified by passing through the humidified humidifying filter 20, and humidified air is supplied into the room. Here, when the humidification filter 20 is rotated, water is supplied from the water tank 25 and the whole becomes wet. However, when the rotation is stopped while the urethane filter 22 is in contact with the water in the water tank 25, Since there is no water absorption, the supply of water is stopped and the entire humidification filter becomes dry. When the operation of the apparatus is stopped, the filter is stopped at a position where water is not supplied, and the humidification filter 20 is kept dry by performing the air blowing operation for a while, so that microorganisms such as bacteria and fungi hardly propagate and a clean humidification filter is obtained. be able to.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is limited to the following description and is not interpreted at all.

(Example 1) Relationship between the roughness of the substrate and the water film An index of the roughness of the substrate by creating a square with an arbitrarily selected length of one side using a wire having a diameter of 0.69 mm It was. At the same time, similar squares were created with the same diameter wire processed to be hydrophilic with hydrophilic silicon and the same diameter wire processed to be hydrophobic with fluororesin. Whether or not a water film is formed when this square made of wire is immersed in water, and if a water film is formed, the ease of breaking the water film is defined as the water film strength. evaluated.

  An example of the result is shown in FIG. In the graph shown in FIG. 5, the vertical axis represents the water film strength. At this time, the water film strength indicates 1: a water film that disappears immediately, 2: a water film that disappears when wind is applied, and 3: a water film that does not disappear unless strong wind is applied. In the untreated wire, it was found that if the side of the square is 8 mm or less, a water film that does not disappear unless a strong wind is given to the eyes of the base material is formed. It was also found that when a hydrophilic or hydrophobic treatment was performed, a water film was formed that had a side of a square of 2 mm or less and would not disappear unless a strong wind was given to the eyes of the substrate. On the other hand, it was found that when one side of the square was extended, a water film could not be formed if it was roughened to 16 mm for an untreated wire, 12 mm for hydrophobic, and 14 mm for hydrophilic. As the humidifying filter, it is only necessary to have moisture necessary for humidification, and an excessive water film is unnecessary. Therefore, in the case of a base material skeleton of 0.69 mm, when one side which is an index of the roughness of the eyes is larger than 8 mm in the untreated equipment, when the hydrophilic or hydrophobic treated base is larger than 2 mm, the low pressure loss is caused. It can be said that a filter with high humidification efficiency can be obtained. From this, it can be said that by performing hydrophilic and hydrophobic treatments, it becomes difficult to form a water film even if the eyes are narrowed compared to the case of no treatment, so that a filter with higher humidification efficiency can be obtained.

(Example 2)
The pressure loss was evaluated by changing the opening of the polyurethane foam for the coarse and fine substrates. With regard to the opening of the polyurethane foam, the number of openings existing on the length of 1 inch was defined as the “substrate opening”, and the pressure loss was measured for each of four points of no opening / 8/13/20. As the number increases, the number of openings (number of cells) on the substrate increases, that is, the substrate opening becomes a fine substrate.

  The result is shown in FIG. The vertical axis of the graph represents pressure loss at a passing wind speed of 1 m / sec. It was found that the pressure loss increased in a quadratic curve as the substrate opening increased and the eyes became finer. FIG. 7 shows the relationship between the thickness and the pressure loss in the polyurethane foam of the base material opening 13. The pressure loss was found to be approximately proportional to the thickness of the substrate.

  The humidifying filter in the present invention is composed of a first substrate part having a coarse mesh and a second substrate part having a fine mesh. When this polyurethane foam is used as the substrate, for example, If the base material opening 13 / thickness 10 mm and the second base material opening 20 / thickness 5 mm are selected, the first base material part and the second base material part The pressure loss can be made equal.

(Example 3)
A water-absorbing polyester fiber woven so as to have 20 openings / inch as a fine second base portion is cut into a disk shape, and an opening 8 is provided as a first base portion having a coarse opening around the periphery. A piece / inch of polyurethane foam was bonded. The thickness of the first base material portion is 20 mm, and the thickness of the second base material portion is 5 mm. A humidifying filter capable of rotating by connecting a shaft and a motor to the center of the second base material portion was obtained. The prepared humidification filter and water tank were arrange | positioned by arrangement | positioning as shown in FIG.2 and FIG.3, and water was supplied to the height which only a 1st base material part is immersed in water. In this state, air was sent from the blower, but the entire humidification filter was not wet, and the air that passed through could not be humidified.

  Next, when the humidifying filter was rotated, the water pumped up by the polyurethane foam immersed in the water was transferred to the absorbent polyester fiber and gradually wetted, and finally the entire humidifying filter was wet. It became. When wind was sent from the blower in this state, humidified air was generated on the downstream side of the humidifying filter, and the water in the aquarium gradually decreased, indicating that it functions as a humidifier.

  According to the present invention, a compact and highly efficient humidification can be performed, and a clean humidification filter and humidification device can be provided. Therefore, the present invention can be applied to household and commercial humidification devices and air conditioners.

1 is a schematic perspective view showing a humidifying filter according to Embodiment 1 of the present invention. Schematic front view showing the humidifying filter of the second embodiment Schematic sectional view showing a humidifying filter of the second embodiment Schematic front view showing the humidifying filter of the third embodiment The graph which shows the formation state of the water film of the Example 1 The figure which shows the base-material numerical aperture of the Example 2, and the relationship of a pressure loss. The figure which shows the base material thickness of Example 2 and the relationship between pressure loss Schematic sectional view showing a conventional humidifier

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Humidification filter 2 1st base material part 3 2nd base material part 4 Rotating shaft 5 Motor 6 Water tank 10 Humidification filter 11 Polyester fiber filter 12 Corrugated filter 13 Rotating shaft 14 Motor 15 Water tank 16 Ventilation path 20 Humidification filter 21 Water absorption Resin filter 22 Urethane filter 23 Rotating shaft 24 Motor 25 Water tank 101 Humidification filter 102 Water tank 103 Fan

Claims (13)

In a humidifying apparatus that humidifies air by blowing air to a humidifying filter wetted with water supplied from a water supply means, the humidifying filter is made of a breathable and water-resistant substrate, and the substrate is rough. It is composed of a first base part and a fine second base part, and water is supplied in the order of water supply means, then the first base part, and then the second base part. Humidifying device characterized. 2. A humidifier according to claim 1, wherein a water film is not formed on the first base part of the humidifying filter. The humidifying device according to claim 2, wherein the first base portion of the humidifying filter is made hydrophilic or hydrophobic. The humidification device according to claim 2 or 3, wherein the shape of the eye of the 1st substrate part of a humidification filter is substantially circular. The humidifying device according to any one of claims 1 to 4, wherein only the first base portion of the humidifying filter is brought into contact with water supplied from the water supply means. 6. The humidifying device according to claim 5, wherein the first substrate portion of the humidifying filter has no water absorption, and the second substrate portion has water absorption. The humidifying device according to any one of claims 1 to 6, wherein the first base part of the humidifying filter is thicker than the second base part. The humidification device according to claim 7, wherein the pressure loss of the 1st substrate part and the 2nd substrate part of a humidification filter is the same, or the 1st substrate is lower. The humidifying filter is rotatable, and includes a second base material portion closer to the center axis of rotation and a first base material portion farther away. A humidifier according to any one of the above. The humidification device according to claim 9, wherein a motor is connected to the humidification filter, and the humidification device rotates the humidification filter by the motor, and the motor is provided on the upstream side of the humidification filter. The humidifying device according to any one of claims 1 to 10, wherein end faces of the first base material portion and the second base material portion are aligned on the downstream side of the humidifying filter. The humidifying device according to any one of claims 1 to 11, wherein the humidifying filter includes an antibacterial material. The humidifying device according to any one of claims 1 to 12, wherein the humidifying filter contains an anti-mold material.

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