JP3154037B2 - Grease filter plate and grease filter for kitchen using porous metal body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grease filter plate for a kitchen using a porous metal body for the purpose of improving the separation rate between oil mist and air and facilitating the discharge of separated oil. It is about a grease filter.

[0002]

2. Description of the Related Art A grease filter using a metal porous filter plate has been known.

[0003] A sintered grease filter plate made of ceramics is also known.

[0004]

The above-mentioned known porous filter plate made of a porous metal is a grease filter plate obtained by impregnating urethane foam having a predetermined thickness with nickel powder and then sintering it at an appropriate temperature. Since the filter plate has sharp irregularities on the inner surface of the hole, when the separated oil adheres, it is difficult to flow, so that there is a problem that the separation oil discharge efficiency is deteriorated, and finally the separation efficiency is reduced. There were also problems.

In the case of a sintered grease filter plate made of ceramics, it is susceptible to vibration and easily chipped, so that not only there is a risk that debris may fall into the dish during cooking, but also the size of the cell changes due to washing. There were problems such as doing.

Therefore, as a grease filter of this kind,
High oil mist trapping rate, no clogging of the filter during continuous use, high trapped oil recovery rate, low pressure loss during passage, simple washing and oil by washing It is required that the mist capturing performance does not deteriorate, but a grease filter that satisfies the requirement has not yet been known.

[0007]

However, the present invention has solved all of the above-mentioned problems by forming the inner surface of the hole of the porous metal body smoothly or by processing the sharp uneven surface into a smooth surface. is there.

That is, the invention of the filter plate is characterized in that a metal powder is sintered into a three-dimensional mesh-like porous body, and the inner and outer surfaces of the pores are smoothly formed by electrolytic polishing or acid polishing. This is a kitchen grease filter plate used.
Further, another invention is to sinter a metal powder of nickel, nickel-chromium or nickel-chromium-aluminum to form a three-dimensional mesh-like porous body, and form the inner and outer surfaces of the pores smoothly by electrolytic polishing or acid polishing. A grease filter plate for a kitchen using a porous metal body, wherein the number of cells is 5 to 20 per inch.

[0009] Then the filters invention, sintered metal powder
Into a three-dimensional mesh-like porous body , which is electropolished or acid-polished.
A grease filter for a kitchen using a porous metal body, characterized in that a filter plate having polished and smooth inner and outer surfaces and a punching plate are arranged in parallel at a predetermined interval, and a frame is fixed to an outer peripheral side thereof. . Further, the metal powder is sintered to form a three-dimensional mesh-like porous body , which is subjected to electrolytic polishing or acid polishing to form a filter plate having a smooth inner and outer surface, and two filter plates are arranged in parallel at a predetermined interval. A grease filter for a kitchen using a porous metal body, wherein a frame is fitted on the outer peripheral side and the whole is integrated.

Still another embodiment is a filter plate in which a metal powder is sintered into a three-dimensional mesh-like porous body, and this is electrolytically polished or acid polished to form smooth inner and outer surfaces of the pores. This is a kitchen grease filter using a porous metal body, characterized in that two filter plates having different mesh sizes are arranged in parallel at a predetermined interval, and a frame is fitted to the outer peripheral side of the filter plate to integrate the whole. . Number of cells per inch in the five to twenty usually area by der used.

The smoothness of the inner and outer surfaces of the hole is such that the adhering oil can flow naturally by its own weight and gives a visually slippery feeling. Sliding degree.

In the grease filter according to the present invention, the filter plate and the punching metal are formed with a small gap (for example, 7 m).
m) or filter plates are placed in small gaps (for example, 5 m
m) in parallel. In this case, when the coarse filter plate (the number of cells per inch is 6 to 11) and the fine filter plate (the number of cells per inch 11 to 17) are arranged in parallel, two filter plates having the same number of cells are arranged in parallel. The separation efficiency is better than it is.

In the above, in order to finish the inner and outer surfaces of the pores of the three-dimensional mesh-like porous metal body smoothly, metal plating or, if the porous body is formed by using powder metal, the sharpness attributed to the powder. Smooth irregularities may be smoothed by acid treatment or electrolytic treatment, or a silicon or Teflon coating layer may be provided to smooth the surface of the holes and reduce the adhesion of oil or the like.

According to the present invention, the inner and outer surfaces of the metal three-dimensional mesh porous body are smoothed, so that the separation oil flows well.
Therefore, a decrease in the separation efficiency over time can be kept relatively small.

[0014]

Example 1 Having innumerable micropores and a porosity of 90% or more,
A three-dimensional mesh porous body having a thickness of 10 mm was formed with 8 to 12 cells per inch, and the inner and outer surfaces of the hole were formed smoothly.

When the filter plate of the present invention and a known filter plate impregnated with metal powder in urethane foam and sintered were tested with the same shape and size, the former filter plate was drained by about 10%. Was good.

An experiment was conducted by smoothing (acid polishing or electrolytic polishing) the inner and outer surfaces of the filter plate using the above-mentioned metal powder, and there was a difference of about 10% between before and after processing. Was.

In the above experiment, each filter plate was soaked in soybean oil, and after the filter plate was taken out, the amount of residual oil was measured 30 minutes after the filter plate was removed, and the quality of oil drainage was compared based on the amount of oil.

At the time of actual use, since the air is forcibly circulated in each hole, the falling rate of the oil under its own weight becomes better.

[0019]

Embodiment 2 An embodiment of the present invention will be described with reference to FIGS.

A punching plate 3 provided with predetermined gaps 2 and 2 in a stainless steel thin plate 1 is provided with a spacer 4 via a first embodiment.
The filter plate 5 is arranged in parallel, and a frame 6 having a U-shaped cross section is fitted around the outer periphery of the filter plate 5 to form a filter 7, and 8 in the figure is an oil hole.

When the filter 7 is set in the usual manner and the exhaust containing oil mist is passed as shown by the arrow 9 in FIG. 2, a part of the oil mist is removed by the punching plate 3, and the exhaust is then stopped at the speed. Changing the filter 7
Since the oil mist passes through the inside as indicated by arrow 10, almost the remaining oil mist is separated, and the inner and outer surfaces 5b of the holes of the filter plate 5,
Attaches to 5c.

The oil adhering to the inner and outer surfaces of the hole flows down under its own weight as indicated by the arrow 11 and is collected from the oil hole 8 into a predetermined oil reservoir.

Since the filter plate 5 has a smooth inner and outer surface of the hole, the separated oil mist easily falls under its own weight, so that there is no risk of clogging or a decrease in separation efficiency due to continuous use.

According to the results of the experiment, no decrease in the separation efficiency was observed after 10 consecutive days of use. The conventional grease filter showed a gradual decrease in separation efficiency (about 7% decrease).

[0025]

Embodiment 3 The embodiment shown in FIGS.

In the embodiment shown in FIG. 3, a filter 7 is formed by sequentially arranging a punching plate 3, a spacer 4, a filter plate 5, and a spacer 4a, and fitting and fixing a frame 6 having a U-shaped cross section to the outer peripheral side thereof. is there.

The embodiment shown in FIG.
Spacers 4 and fine filter plates 5a are sequentially arranged in parallel,
A frame 6 having a U-shaped cross section is fitted and fixed to the outer peripheral side to form a filter 7.

The method of using the filter 7 and the separation of the oil mist in the above-described embodiment are the same as those in the second embodiment, and the description thereof is omitted.

[0029]

Embodiment 4 A manufacturing method according to the present invention will be described with reference to FIG.

The nickel powder and the urethane powder are mixed (mixed at a volume ratio corresponding to the porosity) and formed into a base plate (eg, 20 mm thick, 500 mm long, 500 m wide).
m).

After the base plate is naturally dried, it is fired at 300 ° C. and then at 500 ° C. to 600 ° C. to remove urethane and to sinter the nickel powder.

Then, the surface of the porous body having sharp irregularities is smoothed by electrolytic treatment or acid treatment to obtain the filter plate of the present invention.

[0033]

REFERENCE EXAMPLE Nickel electroplating is applied to urethane foam having a predetermined thickness (for example, 20 mm) after conducting the conductive treatment.
By firing at 0 ° C. for 1 hour and then firing at 500 ° C. to 600 ° C. for 2 hours, a filter plate of the present invention having a porosity Max of 98% can be obtained.

This filter plate has smooth inner and outer surfaces of the holes, and facilitates the natural flow of oil. The metal is nickel-
Chrome can also be used.

[0035]

According to the grease filter of the present invention,
Since a three-dimensional mesh-like porous body obtained by sintering metal powder was used and the inner and outer surfaces of the holes were smooth, the porosity was large (for example, 90%
９７97%), there is an effect that the removal of oil mist is facilitated and the removal rate of oil mist becomes 90% or more.

[Brief description of the drawings]

FIG. 1 is a front view of a part of a filter of the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is a sectional view of another embodiment.

FIG. 4 is a cross-sectional view of an embodiment using two filter plates having different mesh sizes.

FIG. 5 is a partially enlarged view of the same mesh.

FIG. 6 is a block diagram of an embodiment of the manufacturing method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stainless steel plate 2 Slot 3 Punching plate 4, 4a Spacer 5 Filter plate 6 Frame 7 Filter 8 Oil hole

Claims (5)

(57) [Claims] 1. A grease for a kitchen using a porous metal body, characterized in that a metal powder is sintered into a three-dimensional mesh-like porous body, and the inner and outer surfaces of the holes are formed by electrolytic polishing or acid polishing. Filter plate. 2. A three-dimensional mesh-like porous body obtained by sintering nickel, nickel-chromium or nickel-chromium-aluminum metal powder, and shaping the inner and outer surfaces of the hole smoothly by electrolytic polishing or acid polishing. A grease filter plate for a kitchen using a porous metal body, wherein the number of cells is 5 to 20 per inch. 3. A filter plate in which metal powder is sintered to form a three-dimensional mesh porous body, which is electrolytically polished or acid polished to form a smooth inner and outer surface of the hole, and a punching plate are arranged in parallel at a predetermined interval. A grease filter for a kitchen using a porous metal body, wherein a frame is fixed to an outer peripheral side of the frame. 4. A three-dimensional mesh porous body obtained by sintering a metal powder, and a filter plate having a smooth inner and outer surface formed by electrolytic polishing or acid polishing, wherein two filter plates are provided at a predetermined interval. A grease filter for a kitchen using a porous metal body, wherein the filter is arranged in parallel, and a frame is fitted on an outer peripheral side thereof to integrate the whole. 5. A filter plate in which a metal powder is sintered to form a three-dimensional mesh-like porous body, which is electrolytically polished or acid polished to form a smooth inner and outer surface of the pores. A grease filter for a kitchen using a porous metal body, wherein two different filter plates are arranged in parallel at a predetermined interval, and a frame is fitted on the outer peripheral side of the filter plate to integrate the whole.