Melitta mixed filter Cup Merita filter Cup A brief introduction to the advantages of Melita filter Cup

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When it comes to trapezoidal filter cups, I believe everyone will think of the ancestor of trapezoidal filter cups, Merita filter cup, that is, melitta filter cup. About the history of Melitta, there is already a lot of information to find on the network, so I won't repeat it here.

What I would like to share with you is the trapezoidal filter cup commonly used by coffee shops in the past five years.

In addition to the Kalita filter cup commonly used by shops in the early millennium, many shops who have used trapezoidal filter cups in recent years use the "three-ocean filter cup", which is the filter cup used by Mr. Taguchi, the godfather of Baja coffee in Japan.

In this experiment, I will use four kinds of filter cups to compare the flow rate, which are:

1. Melitta 1X1 resin filter cup

2. Kalita 101ceramic filter cup

3. Kalita 101Bozo Burning Ceramic filter Cup

4. Sanyo Youtianyo Coffee Dripper 101ceramic filter cup

The parameters of the same experiment are the same except for the filter cup.

Water: RO reverse osmosis water at room temperature

TDS:0.03ppm

Water volume: 250g

Filter paper: Kalita 101unbleached filter paper

Wisdom scale: ACAIA

Experimental method:

1. Put the lower seat on the wisdom scale, the upper seat (filter cup) on the hand frame, and separate it from the lower seat.

two。 Fold the filter paper and put it on the filter cup and pour 250 grams of water into the filter cup covered with the filter paper at one time.

The above picture shows the melitta filter cup 1X1 resin filter cup drained, the filter cup and the filter paper are attached. As can be seen in the photo, due to the distribution of the ribs, the part of the filter cup and the filter paper is only affixed to the top of the ribs. Let's take a look at the change in velocity:

From the picture above, the velocity curve of the total water accumulation in the upper way; the pressure curve is at the bottom.

According to the situation in the picture, perhaps because of the one-sided relationship of the outlet, the water pressure has been very stable. It is only at about 1 minute 52 seconds that the pressure begins to drop, indicating that the flow rate is faster, and at this time the water level falls to the position of the ribs. The time to drain completely is about two minutes.

The picture above shows how the Kalita 101ceramic filter cup fits with the filter paper after it has been drained. As can be seen from the photo, because the ribs are very shallow, the filter cup and the filter paper are almost completely attached. Let's take a look at the change in velocity:

According to the picture, the situation is obviously different from that of Melitta 1X1. The pressure begins to drop at about 20 seconds, and the time of complete drain is about 47 seconds, which is much faster than that of Melitta 1X1.

The picture above shows how the filter cup fits with the filter paper after the filter cup is drained. From the photo, we can see that the ribs are much deeper than the Kalita 101ceramic filter cup, and the bottom of the filter cup is also deepened, so that the bottom of the filter paper can not be attached to the bottom of the filter cup. Let's take a look at the change in velocity:

According to the situation in the picture, the condition of the ceramic filter cup is obviously different from that of Kalita101. The pressure begins to drop in about 14 seconds, and the time of complete drain is about 30 seconds in advance, which is much faster than that of Melitta 1X1 and Kalita101.

Finally, after the Sanyo 101 ceramic filter cup is drained, the filter cup fits with the filter paper. As can be seen from the photo, the ribs are deep, so there are not too many blocks attached to the filter cup. The bottom of the filter cup is a large hole, which is different from the three small holes of Kalita. Let's take a look at the change in velocity:

According to the situation in the picture, the velocity of burning is slightly different from that of Kalita. The pressure begins to drop at about 5 seconds, and the time to drain completely is about 35 seconds.

The above picture is a comparison of the flow velocity of the four filter cups after overlapping. The colors are:

Blue: Melitta 1X1 resin filter cup

Purple: Kalita 101ceramic filter cup

Green: Sanyo 101 ceramic filter cup

Red: Kalita 101bozo sukiyaki

From this comparison chart, it is also confirmed that the four confessions are different in their internal structures.

Bozo saw the burning because the bottom is not stuck to death, but the flow rate is the fastest, while the Melitta 1X1 resin filter cup because the outlet is on the side, and is higher than the bottom, the flow rate is the most stable, but also the slowest.

On the other hand, the general model of Kalita is similar to that of Sanyo, so the flow rate is also close.

The above is for your reference.