JPH0634708U - Filter - Google Patents

Abstract

(57) [Abstract] [Purpose] The inlet pipe opened between the folds of the filter in the filter is covered with a guide plate to direct the flow to the side wall of the container and prevent blowout of mixed particles in the liquid. [Constitution] The upper case 3 and the lower case 2 form a container 1,
The chrysanthemum-shaped filter body 4 that is folded is fixed to the upper wall 1a of the container 1. The end plate 5 is applied to the filter body 4. The outlet pipe 8 and the inlet pipe 6 are fixed to the upper wall 1a of the upper case 3, and the inlet pipe 6 is opened between the folds of the filter body 4. A guide plate 7 for covering the inlet pipe 6 is fixed to the upper wall 1a of the upper case 3 between the folds of the filter body 4, and the end portion 7a thereof is located outside the fold outer peripheral portion 4a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filter used for filtering fine particles in a liquid such as a fuel oil filter for an internal combustion engine.

[0002]

[Prior art]

 An example of a filter in which the filtration area of the filter is stored in the container to the maximum extent is disclosed in Japanese Utility Model Laid-Open No. 64-21717.

In this product, a chrysanthemum-shaped filter is arranged on the upper wall of the container so as to be substantially concentric with the center of the container, and an inlet pipe that penetrates through the upper wall of the container is provided with an outer fold of the filter. Since it was installed in between, the liquid is introduced from the inlet pipe to the pleats of the filter body, passes through the filter body, is led to the outlet pipe, and flows out of the container.

[0004]

[Problems to be solved by the device]

 By the way, in this filter, there is an inlet pipe between the folds of the filter body, and the liquid introduced into the container concentrates only between the folds in which the inlet pipes are arranged, and the filter body remains at the high speed flow. Since it passes through, a part of the mixed particles in the liquid may cause so-called blow-through, and the particles may be mixed in the filtered liquid.

[0005]

[Means for Solving the Problems]

 In order to eliminate the above-mentioned drawbacks, the filter of the present invention has a filter body, which is formed into a chrysanthemum shape and is folded in a container, which is composed of a cup-shaped lower case and a dish-shaped upper case. The end plate is fixed and the upper end is fixed to the upper wall of the upper case.In addition, the outlet pipe and the inlet pipe opened between the outer folds of the filter are passed through and fixed to the upper wall of the upper case. A guide plate that covers the folds is fixed to the upper wall of the upper case between the folds, and the end is exposed outside the fold outer peripheral edge.

[0006]

[Action]

 The flow of the liquid introduced into the container from the inlet pipe is made to flow toward the side wall of the container while being diffused by the guide plate.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 is a thin steel plate container, and a cup-shaped lower case 2 and a substantially dish-shaped upper case 3 with a flat center recess are integrally wound together with their peripheral edges aligned. It is a thing. Inside the container 1, there is a filter body 4 having a chrysanthemum-shaped cross-section with filter media folded, and an adhesive is applied to the upper wall 1a of the upper case 3 by aligning the upper end of the filter body 4 with the central axis of the container. It is stuck in. The lower end of the filter body 4 is sealed with a thin plate-shaped metal end plate 5 via an adhesive. A substantially J-shaped metal inlet pipe 6 is fixed to the upper wall 1a of the container 1 by penetrating the upper wall 1a. In order to prevent the adhesive from flowing into the inlet pipe 6 when the filter body 4 is adhered, the inlet end of the container 1 has a predetermined length along the pleats of the filter body 4 between the outer pleats. There is an opening in the stretch folds.

As shown in FIG. 2, a semiparabolic guide plate 7 formed of a thin metal plate is fixed to the upper wall 1a of the container 1 between the outer pleats of the filter body 4. The guide plate 7 covers the pipe end of the inlet pipe 6 and is open toward the side wall of the container, and is attached with the end portion 7a positioned outside the pleated outer peripheral end 4a of the filter body 4. On the upper wall 1a of the container 1, there is further provided a J-shaped metal outlet pipe 8 formed in the center of the upper wall 1a so as to penetrate the upper wall 1a. The outlet pipe 8 in the container 1 has a pipe end hanging inward of the filter body 4.

The guide plate may be a gutter-shaped guide plate 7'shown in FIG. 3 or one having a curved surface with a predetermined curvature, and if it is a curved surface, for example, a quadrant spherical surface, a quadrant ellipsoidal surface, etc. can be arbitrarily set. . In the case of a curved surface, if the pipe end of the inlet pipe 6 is installed at a position corresponding to the focal point of the guide plate 7, a parallel flow having a uniform linear flow velocity can be obtained toward the side wall 1b of the container 1.

In this filter, the liquid flowing down in the inlet pipe 6 and introduced into the container 1 advances toward the guide plate 7, and when reaching the guide plate 7, the flow changes direction while diffusing the flow. One flows toward the side wall 1b, is dispersed in each fold of the filter, and is filtered.

[0011]

[Effect of device]

 Therefore, according to the present invention, the inlet pipe opened between the folds of the filter body is covered with the guide plate whose end is arranged outside the filter body, so that the liquid introduced into the container is guided by the guide plate. Flow toward the side wall of the container and disperse in each fold without concentrating only on the fold with the inlet pipe, preventing blow-through of mixed particles between specific folds, effectively utilizing the entire filter body, and filtering. It does not reduce efficiency.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a filter according to the present invention.

FIG. 2 is a view showing an embodiment of a guide plate used in the filter of the present invention, (a) is a front view and (b) is a side view.

FIG. 3 is a view showing another embodiment of the guide plate used in the filter of the present invention, (C) is a front view and (D) is a side view.

[Explanation of symbols]

 1 Container 1a Upper wall 4 Filter body 6 Inlet pipe 7, 7 Guide plate

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location F02M 37/22 J 7049-3G

Claims (1)

[Scope of utility model registration request] 1. A filter body, which is formed into a chrysanthemum shape by being folded, is fixed to an upper wall of an upper case in a container composed of a cup-shaped lower case and a dish-shaped upper case, and an end plate is further attached to a lower end of the filter body. The outlet pipe and the inlet pipe that opens between the outer pleats of the filter are fixed to the upper wall of the upper case, and the guide plate that covers the inlet pipe and the end portion is located outside the outer peripheral end of the fold is pleated. A filter attached to the upper wall of the upper case in between.