JPS6020068A - Instantaneous cooler - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an instantaneous cooler. More specifically, it relates to a cooler that instantly cools hot water (such as coffee).

To make the explanation easier, we will talk about coffee and tea below.

Conventionally, various cooling methods have been used, but generally in coffee shops etc., coffee powder is added, stirred, and boiled water is placed in a certain container, and the container is immersed in water. In most cases, cooling occurs from the surroundings of the container. Such work is difficult and inefficient.

Then, according to the customer's order, a cup of iced coffee is served by adding ice to the chilled coffee.

In addition, in the case of iced tea, after brewing the black tea with boiling water, pour the boiling water into a flat-bottom pot, mix with sugar, and then stir the black tea while soaking the pot in a vat filled with water until it reaches the water temperature. At that point, transfer it to a container, add ice, and it's done. However, the time and work required for this process are extremely difficult. During that time, they are unable to do other work, so they are inefficient.

This invention aims to eliminate the various drawbacks mentioned above.

Next, the present invention will be explained in detail based on the drawings.

FIG. 1 is a perspective view, FIG. 2 is a plan view of essential parts, and FIG. 3 is a partially cutaway view.

(1) is an outer cylinder into which the main body (2) is fitted.

As shown in FIGS. 1 and 3, the outer cylinder (1) is provided with a water inlet (IA) at the bottom and a drain port (IB) at the top. (4) is the mounting base for this cooler. This mounting base (4) is constructed as shown in the figure.
D) This is because this shape is necessary to create a wide space to easily receive the cooled liquid (see details below).

Of course, the water inlet (IA) is connected to the water supply via a hose (not shown).

As mentioned above, (2) is the main body, which is made of metal with good thermal conductivity. A spiral fin (2B) is integrally provided on the outer periphery of the main body (2), and an outer cylinder (2B) is provided integrally with the main body (2).
The outer diameter of the spiral fin (2B) is suitably matched to the inner diameter of 1). This linear combination creates a groove (2
C) Provided on the outer periphery of the C main body (2). ) are connected, thus forming a waterway (a waterway with a long total length). This water channel is communicated with the water inlet (IA) and drain port (IB) described above. Therefore, as shown in FIG. 3, water is injected from the water inlet (IA) [(a) shows the flow of water. ] is (01 direction input (the arrow indicates the flow of water), and the drain port (IB
) It is configured to cause water to work as a high-speed swirling flow (forced convection) in the direction of water flow shown in arrow C (c)]. The above-mentioned spiral fins (2B) cause water to work in a long channel as a high-speed swirling flow, creating a temperature boundary layer on the low temperature side as shown in Fig. 4 (conceptual diagram) and Fig. 5 (principle diagram) (both details below). ) has the effect of quickly peeling off and discharging. Further, heat transfer from θf1 to θf2 shown in FIG. 4 (conceptual diagram) is performed in multiple stages. Note that the spiral fin (2B) described above also has the meaning of expanding the heat radiation area and improving the heat radiation effect.

In addition, (2E) is an auxiliary container attachment part provided on the upper part of the main body (2) in order to attach an auxiliary container when pouring a large amount of hot water.

Further, (2D) is a droplet provided at the lower part (bottom surface) of the main body (2) as described above, from which the cooled liquid is allowed to fall.

The main body (2) having the above-mentioned structure is fitted with an outer cylinder (one meter per month).

(3) is the core of the main body (2), and is made of a material with poor thermal conductivity. (3A) indicates the outer diameter of the core (3), and around this outer diameter (3A) there is an extremely shallow vertical groove (3B).
(an extremely shallow trench dug in the vertical direction) is provided.

Note that (3) is the knob on the core (3).Since the boiling water that is cooled above is mainly used for beverages, it is necessary to pay special attention to hygiene. Therefore, this knob (3C)
) and easily take out the core (3) and remove the main body (2).
) can be washed inside. Moreover, since there is a large space inside the main body (2), it can be easily washed.

Since the configuration of the core (3) and the main body (2) is as described above, when the core (3) is inserted into the inner surface (2A) of the main body (2+), an extremely narrow gap (extremely narrow gap) is formed. This extremely narrow gap is close to the thickness of the high-temperature boundary layer shown in Figure 4 (conceptual diagram) and Figure 5 (principle diagram) (details below), so the hot water flows through this (nier gap). ) (Figures 3 and 5), it is rapidly affected by the cooled inner surface (2A) of the main body (2).

Ru. (Please consider the configuration of the main body and core described above.) Next, the 'fS4 diagram (conceptual diagram) will be explained. This conceptual diagram shows how heat is transferred by heat transfer.

Heat moves from high temperature to low temperature.

In the figure, θf1 to θf2 are temperature distribution curves, and the high-temperature liquid on the left comes into contact with the solid (G), creating a layer where the temperature drops rapidly. That is the high temperature boundary layer. [
As long as convection does not occur in this layer, there is no heat transfer to the constant temperature region on the high temperature side.
heat is transferred from the solid surface (to the left side of the eye), and is then transferred to the opposite solid surface (to the right side of the eye) by conduction, and the cold side temperature boundary layer (chi) shows a sudden temperature change in the low temperature liquid on the right side.
However, heat cannot be transferred in a constant temperature range unless there is convection. It can thus be seen that heat exchange between liquids is inefficient.

Therefore, the principle diagram will be explained next based on FIG. When hot water is passed through the gap between the main body (2), which is set to the thickness of the thermal boundary layer (to) or a thickness close to it, and the extremely shallow vertical tR (3B) of the core (3), the cooled main body (2) When it comes in contact with the water, it causes a sudden change in temperature and moves downward as a flow (d), eventually reaching the same temperature as the water from the drop opening (2D) and collecting in the container. At this time, the heat transferred to the main body (2) is transferred from the spiral fins (2B) and the grooves (2C) to the water flow (b), but this water flow is a high-speed swirling flow (forced convection), so it is The temperature boundary layer (chi) that comes to the surface is quickly carried away, so the heat does not stay there.

Next, the results of experiments on the cooler of the present invention are as follows.

If you cool 98℃ hot water at 2℃ with cooling water (tap water) at 22℃, it will take 5 minutes and the required amount of water will be 5.542℃, resulting in the temperature of 98℃ boiling water becoming 22℃. It came out. Furthermore, when water was heated at 50°C under the same conditions, the water temperature also reached 22°C. By the way, the depth of the extremely shallow vertical groove (3B) is 0.2
It was around %.

As described above, when the instantaneous cooler according to the present invention is implemented, the following effects can be obtained.

(al) It can be cooled with only water, and only a small amount is needed. (Economical) (b) The structure is simple and maintenance is easy. (C) This cooler can be made small, so it does not take up much space. No. (dl) Any amount of hot water can be cooled down. Moreover, it can be used continuously.

(e) Can be washed hygienically and easily. +f+Of course, the object can be anything, including boiling water. For example, in the case of the above-mentioned coffee, it is easy to switch between cooling the coffee and then washing with water, cooling the black tea with water and washing with water, cooling somen soup with water, etc. (gl) Because there are a wide variety of customers at coffee shops, etc., their orders are extremely diverse, and in the summer, the owners often order items such as iced tea or iced coffee, and depending on the time of day, they have to take extra orders. There are times when this is not possible, but even in such cases, this instantaneous cooler has excellent effects and can do four things.
In the past, in order to respond to such orders, customers would pour strongly brewed tea or coffee directly onto the water to overcome emergencies. In other words, even in the above-mentioned case, with this cooler, a cooled liquid can be produced in an instant, and furthermore, the instant cooling does not impair the flavor of the coffee or tea. Therefore, if you have one of these coolers, you will be able to expand your coffee shop's product lineup and be sure to please your customers.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view, FIG. It is a principle diagram. (1) is the outer cylinder, (IA) is the water inlet, (IB) is the drain port,
(2) is the main body, (2A) is the inner surface of the main body, (2B) is the spiral fin, (2C) is the groove, (2D) is the droplet, (2E) is the auxiliary container attachment part, (3) is the core , (3A) is the outer diameter of the core, (3B) is the extremely shallow vertical groove, (3C) is the knob, and (4) is the mounting base. (a) (b) (c) shows the flow of water, (d) shows the flow of hot water, (e) shows the constant temperature region on the high temperature side, (f) shows the temperature boundary layer on the high temperature side, and (g) shows the flow of hot water. An individual (an example is a boundary layer with a temperature on the low-temperature side, and a group is a constant temperature region on the low-temperature side. Patent applicant: Tadashi Usami, Toshio Omiyaki, patent attorney, Naotomi Nambu

Claims (1)

[Claims] An outer cylinder is provided with a water inlet at the bottom and a drain port at the upper part, and a main body having spiral fins and grooves on the outer periphery and a droplet on the bottom is fitted into the outer cylinder, and the main body and the outer cylinder are fitted. A core with an extremely shallow vertical groove formed on its outer periphery is inserted into the main body, and an extremely narrow gap is created between the core and the main body. An instantaneous cooler characterized by having the following features: