JPH0522016U - Filter for ventilation fan - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention provides a filter for a ventilation fan, which is a filter with improved designability, in which the pressure loss is less likely to increase, the service life is long, and the replacement time can be easily recognized. The purpose is to do. [Constitution] The present invention has as its gist "a filter for a ventilation fan, characterized in that 5 to 15% by weight of colored fibers 3 are mixed with respect to 1 weight of a fiber sheet filter mainly composed of white fibers 2." Is to

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filter for a ventilation fan. More specifically, the present invention relates to a ventilation fan filter that has improved design characteristics, has less pressure loss, has a long service life, and can easily recognize when to replace.

[0002]

[Prior Art]

 Conventionally, as a ventilation fan filter with improved design, there has been a filter provided with a design by spraying a pigment on the entire surface of the filter for coloring.

However, in this filter, since the entire surface of the filter is covered with the pigment, dirt such as oil and dust adhering to the surface of the filter is inconspicuous, and the replacement time cannot be easily known. .

On the other hand, as another ventilation fan filter, one in which a pattern is printed on the filter surface by a printing machine or the like is known. In this filter, since the ground portion of the filter and the pattern portion are clearly distinguished, dirt attached to the ground portion of the filter surface is easily noticeable and the replacement time can be easily recognized. .

However, in this filter, when printing is performed, since the roller presses the filter, the filter loses its thickness and becomes flat, so that the pressure loss of the filter increases correspondingly and the service life is shortened. Was becoming.

[0006]

[Problems to be solved by the device]

 The present invention has been made in view of such circumstances, and is a filter with improved designability, in which pressure loss is less likely to increase, the service life is long, and the replacement time can be easily recognized. It is intended to provide a filter for a ventilation fan.

[0007]

[Means and Actions for Solving the Problems]

 In order to achieve the above object, a device according to claim 1 is characterized in that "a fiber sheet-shaped filter mainly composed of white fibers is mixed with 5 to 15% by weight of colored fibers with respect to the weight of the filter. Filter "is the gist.

Further, the gist of the invention of claim 2 is "a filter for a ventilation fan, characterized in that the fineness of the colored fiber is 15d or more".

As the white fibers constituting the ventilation fan filter of the present invention, it is preferable to use mainly flame-retardant fibers mainly made of resin such as polyvinyl chloride, polyvinylidene chloride, and polyclar. Examples of the fibers include synthetic fibers such as polyethylene, polyamide, polyclar, polyacrylonylyl, polypropylene, polyvinyl alcohol, polyester and polyurethane, regenerated fibers such as rayon and viscose, semi-synthetic fibers such as acetate, carbon and metal. Fibers such as inorganic fibers such as glass and the like are preferable. The fineness of these fibers is 3 to 30d, which is suitable for use. Colored fibers are mixed with the white fibers.

The colored fiber is a fiber colored with a desired color such as red, blue or yellow, and its fineness is recognized as a pattern on the filter when mixed into the white fiber 2 and formed into a sheet. It is preferably 15 d or more, and particularly in the range of 30 to 50 d, the colored fiber can be clearly recognized as a pattern on the filter, which is preferable. Further, the amount of the colored fiber mixed into the filter needs to be 5 to 15% by weight based on the weight of the filter. When the content of colored fibers is less than 5% by weight, it cannot be recognized as a pattern because the amount of colored fibers when formed into a sheet is too small, while the content is more than 15% by weight. In this case, the white part for recognizing the adhesion state of dirt produced by the white fiber is reduced, making it difficult to recognize the replacement time. A flame-retardant fiber is desirable as a material for the colored fiber, and is not particularly limited as with the white-colored fiber.

The white fiber or the colored fiber described above can be formed into a sheet to obtain the filter for a ventilation fan of the present invention. The sheet is formed by mixing the white fiber with the colored fiber and using the card method. After the fiber is opened and made into a fibrous web, it is entangled and the fibers are entwined with each other. White fibers and colored fibers are mixed with heat-adhesive fibers, and the heat-adhesive fibers are melted under no pressure to give a white color. A conventionally known method such as a method of thermally adhering fibers or colored fibers, a method of adhering white fibers or colored fibers with a binder can be used. In this way, the ventilation fan filter of the present invention simply contains colored fibers, so the filter surface is not flat, and the pressure loss like a filter with a pattern formed by printing is large. Problem does not occur.

In the filter for a ventilation fan of the present invention manufactured in this way, since the colored fiber is mixed in an amount of 5 to 15% by weight based on the weight of the filter for the ventilation fan, the colored fiber is contained in the filter. The white fibers forming the filter and the colored fibers scattered between the white fibers create a pattern here. Also, in this filter, as dirt such as oil and dust adheres to the surface of the filter, the white part of the white fiber of the filter discolors due to the adhesion of dirt, and the degree of dirt adhesion is greater than that of the white fiber of the filter. It appears as the degree of discoloration of the white part.

Further, when the fineness of the colored fiber is 15 d or more, the weight of one colored fiber is large, and the number of the colored fibers in the filter decreases as the fineness of the fiber increases, and In, the colored fibers become more sparsely scattered. Also, as the fineness of the colored fiber increases, the fiber diameter increases accordingly, making it more noticeable, and the pattern created between the colored fiber and the white fiber is well defined, and the white portion of the white fiber The area of the area becomes larger, and it becomes easier to recognize the dirt.

[0014]

[Examples] As white fibers, 45% by weight of polyester fiber having a fineness of 20d and a fiber length of 76mm, 35% by weight of polyclar fiber having a fineness of 15d and a fiber length of 76mm, polydacral fiber having a fineness of 7d and a fiber length of 102mm 15% by weight and 5% by weight of a polyester fiber having a fineness of 30d and a fiber length of 76 mm, which was colored in blue, as a colored fiber were mixed and formed into a fibrous web by the card method, and then a vinyl chloride binder. By adding the fibers to each other and forming a sheet, a filter for a ventilation fan was obtained. The obtained ventilation fan filter is shown in FIG. The obtained ventilation fan filter 1 was in a state in which blue colored fibers 3 were scattered in a white portion composed of white fibers 2 and a pattern was created.

[0015]

[Effect of the device]

 With the above-described configuration, in the ventilation fan filter according to claim 1, the pattern is created with the colored fibers scattered between the white fibers, and the white fiber has high designability. The degree of discoloration of the white part can be clearly recognized as the degree of dirt adhering to the ventilation fan filter, and it is possible to easily know when to replace the ventilation fan filter. In addition, in this ventilation fan filter, since the colored fibers are simply mixed and the filter surface is not smooth, pressure loss is less likely to increase and the service life can be extended.

Further, in the exhaust fan filter according to the second aspect, since the fineness of the colored fibers is as thick as 15 d or more, the weight of one fiber is large and the number of the colored fibers in the exhaust fan filter is small. Therefore, they cannot be uniformly dispersed, and are in a sparsely dispersed state. For this reason, the white fiber portion can be made wider, and the degree of discoloration of the white fiber due to stain, in other words, the stain adhesion state can be more accurately grasped, and the replacement time can be recognized at a glance.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing a ventilation fan filter of the present invention.

[Explanation of symbols]

 2 ... White fiber 3 ... Colored fiber

Claims (2)

[Scope of utility model registration request] 1. A filter for a ventilation fan, characterized in that 5 to 15% by weight of colored fibers are mixed with respect to the weight of a fibrous sheet-shaped filter mainly composed of white fibers. 2. The ventilation fan filter according to claim 1, wherein the fineness of the colored fiber is 15 d or more.