JPH04367632A - Hot-water heating device of automatic tea supply machine - Google Patents

Abstract

PURPOSE:To provide the hot-water heating device of an automatic tea supply machine which can reduce remarkably a waiting time until a drink is extracted by shortening the time required for boiling up, at the time of additional boiling operation, etc., accompanied with the start operation after feed water and replenishment of water. CONSTITUTION:In a hot water storage tank 7 having an opening on the upper face, it is constituted of a guide 13 formed by extending out of the inner wall surface of the hot water storage tank 7, a section wall 14 provided so as to be freely insertable along the guide 13 in order to divide the hot water storage tank 7, a gap part 18 provided between the bottom face of the hot water storage tank 7 and the section wall 14, and a heater 21 inclined and provided in one section surrounded by the wall surface of the hot water storage tank 7 and the section wall 14.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water heating device for an automatic tea dispenser.

0002

2. Description of the Related Art FIG. 6 shows a conventional water boiling device for an automatic tea dispenser. In the figure, reference numeral 1 denotes a hot water storage tank having an opening on the top surface and walls covering the side and bottom surfaces. Hot water storage tank 1
A hot water supply pipe 2 is provided on the side surface of the hot water supply pipe 2 and extends outward through the wall surface, and boiled hot water is poured out through the hot water supply pipe 2 and the hot water supply valve 3. Further, a throw-in type heater 4 is disposed inwardly penetrating the wall surface of the hot water storage tank 1. A hot water temperature sensor 5 is fixed in close contact with the outer wall surface of the hot water storage tank 1.

[0003] The operation of the water boiling device for an automatic tea dispenser constructed as described above will be explained below.

First, when water is supplied to the hot water storage tank 1 and the power is turned on, the heater 4 is energized and starts boiling water. When the hot water eventually reaches the set temperature, the hot water temperature sensor 5 detects this and stops energizing the heater 4, completing the temperature rise and transitioning to a heat retention state. At this point, the machine is in a state of waiting for extraction of the beverage, and when the extraction switch is pressed, the extraction of the beverage is performed arbitrarily. When the water temperature drops due to water replenishment, etc., the water temperature sensor 5 detects this and energizes the heater 4.

[0005]

[Problem to be Solved by the Invention] However, in the above configuration, the entire volume of water supplied to the hot water storage tank 1 is boiled at once during the initial start-up operation, so when the initial required amount of hot water is small, However, it had the disadvantage that it required waiting for all the water to boil, and the time required for boiling was extremely long, resulting in a long waiting time until the beverage could be extracted.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a water boiling device for an automatic tea dispenser that shortens the time required to boil water during start-up operation after water supply.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the water heating device for an automatic tea dispenser of the present invention includes a hot water storage tank having an opening on the top surface, and a guide formed extending from the inner wall surface of the hot water storage tank. , a partition wall that can be inserted freely along the guide to divide the hot water storage tank, a gap provided between the bottom of the hot water storage tank and the partition wall, and a partition wall surrounded by the wall of the hot water storage tank and the partition wall. The heaters are arranged unevenly in one compartment.

[0008] Furthermore, a hollow portion is provided within the partition wall.

[0009]

[Function] With this configuration, the partition wall divides the water supplied into the hot water storage tank into sections and stores the water during start-up operation after water supply or additional heating operation accompanying water replenishment. Since the convection movement of the water in the tank is blocked and the water in one compartment is intensively boiled, the time required for boiling is shortened and the waiting time for brewing the beverage can be significantly reduced.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 is a sectional view of an automatic tea dispenser according to an embodiment of the present invention. 7 is a hot water storage tank having an opening 8 on the top surface for storing hot water. Reference numeral 9 denotes a tea leaf supply hopper that stores tea leaf raw materials, and 10 a tea leaf exchange device that automatically supplies and discharges tea based on the number of cups of tea to be extracted and the elapsed time after extraction, and has a built-in geared motor 11 as a driving source. There is. Reference numeral 12 denotes a tea brewing device that extracts a beverage by receiving tea leaves supplied from the tea leaf supply hopper 9 and hot water injected from the hot water supply port.

[0012] The details of the water boiling device of the automatic tea dispenser will be explained below with reference to the drawings of Figs. 1 and 2.

Reference numeral 13 denotes a pair of guides extending inwardly on the inner wall of the hot water storage tank 7, and a pair of guides 13 are provided at opposing positions on the inner wall of the hot water storage tank 7. 14
is a partition wall that divides the hot water storage tank 7 into a partition A15 and a partition B16, and a groove 17 is provided in the end face. Also, there is a gap 1 between the lower part of the partition wall 14 and the bottom of the hot water storage tank 7.
8 is provided.

A hot water supply pipe 19 for supplying hot water in the hot water storage tank 7 is disposed on the wall of the hot water storage tank 7 on the side of section A15, and the boiled hot water is supplied to a hot water supply valve 20 that controls the supply.
It is poured out through the. A pipe 23 into which a heater 21 and a hot water temperature sensor 22 are inserted extends inward from the wall of the hot water tank 7 on the side of section A15. A drain pipe 24 is provided on the bottom surface of the hot water storage tank 7 so as to penetrate the wall surface and extend downward.

The operation of the water heating device for the automatic tea dispenser constructed as above will be explained below.

First, the partition wall 14 is inserted from above with the groove 17 of the partition wall 14 fitted into the guide 13 of the hot water storage tank 7. There is a difference in the water level immediately after the water is supplied to either section A15 or section B16 in the hot water storage tank 7, but the water is in section A.
Since the water flows from either section A15 or section B16, which has a higher water level, to the section where the water level is lower through the gap 18, the water levels in section A15 and section B16 stop at a position where they reach equilibrium.

After that, when the power is turned on, the water temperature sensor 22 detects the initial temperature, and the heater 21 installed in the section A15 becomes energized and starts boiling water. As the hot water heated by the heater 21 installed in the section A15 rises and causes convection, heat is transferred while being diffused. However, partition wall 1
Since the section A15 is isolated from the section B16 by 4, convection and heat diffusion movements are blocked and the section A15
Only the hot water inside will be heated intensively.

Here, since the gap 18 has a small opening area and is located at the bottom of the hot water storage tank, the transfer of heat between the section A15 and the section B16 due to convection or diffusion of hot water is extremely small. Therefore, only the hot water in section A15 is heated up intensively, and the time required to reach the set temperature is shortened.

[0019] Eventually, when the hot water in the compartment A15 reaches the set temperature, the hot water in the compartment A15 enters a waiting state for extraction, and each time the switch is pressed, the hot water in the compartment A15 is supplied through the hot water supply pipe 19 and the hot water supply valve 20. When the water level in section A15 decreases due to hot water supply, water flows in from section B16 through the gap 18 to compensate for the drop, and the water level is always kept constant. The drop in water temperature is detected by a hot water temperature sensor 22, and the heater 21 is controlled to be energized when the temperature falls below a predetermined temperature. Regarding hygiene, since the partition wall 14 is made removable, it can be easily cleaned by removing the partition wall 14 from the hot water storage tank 7.

As described above, according to this embodiment, in the hot water storage tank 7 having an opening on the top surface, the guide 13 formed extending from the inner wall surface of the hot water storage tank 7 and the hot water storage tank 7
A partition wall 14 is inserted freely along the guide 13 to divide the water, a gap 18 is provided between the bottom of the hot water tank 7 and the partition wall 14, and a wall surface of the hot water tank 7 and the partition wall 14 By providing the heaters 21 that are unevenly arranged in one enclosed compartment, the compartment wall can be used to supply hot water into the storage tank during start-up operation after water supply or additional heating operation accompanying water replenishment. The water is divided into sections, and the convection movement of water in the hot water storage tank is interrupted to intensively boil the water in one section, thereby shortening the time required for boiling and greatly reducing extraction waiting time. can do.

The second embodiment of the present invention will be described below with reference to FIG.
This will be explained with reference to FIG. Here, the difference from the configuration in FIG. 1 is that a hollow portion 14B is provided in the partition wall 14A to improve the heat insulation between the partition A15 and the partition B16.

The operation of the water boiling device for the automatic tea dispenser constructed as described above will be explained. When boiling the water in the hot water storage tank 7, heat is transferred from the high temperature hot water in the compartment A15 to the low temperature water in the compartment B16 because the compartment A15 is in contact with the compartment B16 via the compartment wall 14A. Here, since the hollow part 14B is formed in the partition wall 14A, the transfer of heat from the partition A15 to the partition B16 through the air layer with low thermal conductivity inside the partition wall 14A is extremely small.

At this time, the effect of heat conduction from section A15 to section B16 via the wall surface of the hot water storage tank 7 is that the cross-sectional area of the wall surface of the hot water storage tank 7 is larger than that of section A15 via the section wall 14A.
It is minute because it is very small compared to the contact area between and the section B16.

As described above, the hollow portion 14 is formed within the partition wall 14A.
By providing B, it is possible to improve the heat insulation between the compartment A15 and the compartment B16, suppress loss due to heat transfer, shorten the time required for boiling, and reduce the extraction waiting time.

[0025]

Effects of the Invention As described above, the present invention provides a hot water storage tank having an opening on the top surface, a guide formed to extend from the inner wall surface of the hot water storage tank, and a guide that can be freely inserted along the guide to divide the hot water storage tank. By providing a partition wall provided, a gap provided between the bottom surface of the hot water storage tank and the partition wall, and a heater biased toward one partition surrounded by the wall surface of the hot water storage tank and the partition wall. It is possible to divide the water supplied into the hot water storage tank into sections, block the convection movement of the water in the hot water storage tank, and intensively boil the water in one section.

Furthermore, by forming a hollow part in the partition wall, it is possible to improve the insulation between the partitions, minimize the loss due to heat transfer and diffusion, and improve the efficiency of temperature rise.

[0027] Therefore, during start-up operation after water supply or additional cooking operation accompanying water replenishment, the time required for boiling water can be shortened and the waiting time for extraction can be significantly reduced.

[Brief explanation of drawings]

FIG. 1 is a plan view of a water heating device for an automatic tea dispenser according to a first embodiment of the present invention.

[Fig. 2] Cross-sectional view of the water heating device of the automatic tea dispenser in the first embodiment

[Figure 3] Cross-sectional view of the automatic tea dispenser equipped with the water boiler in Figure 1

FIG. 4 is a plan view of a water heating device for an automatic tea dispenser according to a second embodiment of the present invention.

[Fig. 5] Cross-sectional view of the water heating device of the automatic tea dispenser in the second embodiment

[Figure 6] Cross-sectional view of the water heating device of a conventional automatic tea dispenser

[Explanation of symbols]

7 Hot water storage tank 13 Guide 14 Partition wall 14A Partition wall 14B Hollow part 18 Gap 21 Heater

Claims (2)

[Claims] 1. A hot water storage tank having an opening on an upper surface, a guide formed to extend from an inner wall surface of the hot water storage tank, and a partition wall provided so as to be freely insertable along the guide to divide the hot water storage tank. an automatic tea dispenser comprising: a gap provided between the bottom surface of the hot water storage tank and a partition wall; and a heater biased toward one partition surrounded by the wall surface of the hot water storage tank and the partition wall. water heating device. 2. The water heating device for an automatic tea dispenser according to claim 1, wherein the partition wall has a hollow portion.