JPH04126952A - Boiler for automatic food feeder - Google Patents

Abstract

PURPOSE:To prevent a temperature of applied water from being decreased under a replenishing of water by a method wherein a boiler is comprised of a plurality of heating chambers having a heating means therein and arranged continuously in sequence, a water supplying port, a water discharging port and water passages alternatively arranged at either an upper part or a lower part of a heating chamber along a water flow direction CONSTITUTION:As a valve is opened, heated water is discharged out of a heating chamber 23 through a pipe in a direction of arrow E and then hot water is consumed, a liquid surface sensor detects a consumption of water and the cold water is fed into the heating chamber 20 in a direction of an arrow A. Water corresponding to an amount of fed water is sent in sequence in directions of arrows B, C and D through water passages disposed in each of the partitions 14 to 16 toward heating chambers 20 to 23 and then when a specified amount of water is detected by the liquid surface sensor in the heating chamber 23, the water feeding is stopped. Cold water supplied to the heating chamber 20 is not directly mixed with water of high temperature stored in the heating chamber 23, but water supplemented to the heating chamber 23 is a well-heated water in the heating chamber 22, so that the water in the heating chamber 23 does not drop its temperature rapidly and the water reaches to a predetermined temperature within a short period of time under a light supplemental heating.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a boiler that heats water, and particularly to a boiler that continuously cooks food using heated water or steam, or a food automatic boiler that heats and supplies food. This invention relates to a boiler suitable for use in a feeder.

[Conventional technology and problem 1] Automatic food dispensing machines such as automatic food cookers and vending machines that provide heated food to customers in a short period of time have a tendency to provide food to customers who visit irregularly. Is it necessary to always have water heated to a high temperature on hand so that it can be used immediately?

To do this, there are two ways to heat water through a heat exchanger known as an instantaneous water heater and supply the required amount, or to heat a certain amount of water in advance and use a heater to keep it warm while using the required amount. There is also a method of adding water depending on the amount used. However, although the former method can be applied when supplying hot water at a relatively low temperature, there is a problem that it is not suitable when water at a high temperature of over 100°C is required. If water is heated in a closed system, it is possible to obtain water or steam at temperatures over 100°C.
Since low-temperature water is replenished according to the amount used, the temperature of the stored water and metal drops during replenishment, and it takes time to reheat it. There were problems such as the need for a heat source.

[Means for solving the problem] As described in the claims, a means for solving the above problem includes a plurality of heating chambers each having a heating means therein and connected in sequence, a water supply port, This is a boiler for an automatic food feeder that has a water outlet and water channels provided alternately at the upper or lower part of the heating chamber according to the water flow direction.

[Operation] In order to explain the present invention in detail, it will be explained with reference to FIG. 1, which is a block diagram for showing the principle of the present invention. 1st
In the figure, a boiler main body 1 has a plurality of heating chambers 3, and each heating chamber 3 is provided with a heating means 4. The number of heating chambers may be two or more, and the number is not limited in the present invention. Cold water is supplied from direction A, B and C.
, D are sent in sequence in the directions of arrows D, and are discharged as heated water in the direction of E. Cold water corresponding to the amount of heated water discharged and used through arrow E is supplied from arrow A, and is successively sent through a plurality of heating chambers to be heated. Since the last heating chamber with the discharge port is supplied with already heated water from the immediately preceding heating chamber, the cold water supplied in the direction of arrow A does not mix with the high temperature water in the final heating chamber.

[Example 1] Figure 2 is a diagram showing one example of the boiler of the present invention.
It is a perspective view of a state where a lid part is opened for explanation. In this embodiment, the boiler main body 11 has a cylindrical shape and has a sealed structure formed by a cylinder 12 and a lid 13, and the inside of the cylinder 12 has partitions 14.1 provided in the longitudinal direction.
5.16.17) and divided into four heating chambers 20.
21°22.23 are formed. The four heating chambers are each equipped with an electric heater 24.25.26.2 in this example.
7 is provided. A water supply port 28 is provided in the heating chamber 20, and water is supplied through a pipe (not shown). The heating chamber 23 has a drain port 30 provided in the lid 13.
The pipe is connected through. Further, the upper parts of the partitions 14 and 16 are cut out to form a waterway, and the lower part of the partition 15 is cut out to form a waterway. The heating chamber 23 is also provided with a liquid level sensor, a temperature sensor, a pressure sensor, etc. (not shown).

In the initial state, the water supply port 28 is opened by a pump (not shown).
Cold water is introduced from and fills each heating chamber. When the liquid level sensor detects a certain liquid level, a drain valve and a water supply valve (not shown) are closed, and the heaters 24, 25, 26, and 27 are energized to heat the water in the heating chamber. When the temperature of the water in the heating chamber 23 reaches a certain temperature, heating by the heater is stopped by a signal from the temperature sensor, and when the temperature drops below a certain temperature, heating by the heater is performed, and this process is repeated thereafter. The heating chamber is a pressure-resistant container sealed with a lid 13, a valve 35, and a valve 36, so the temperature of the water can be adjusted to 1.
It is possible to arbitrarily set a temperature exceeding 00°C, and in this example as well, the temperature of the water in the heating chamber 23 is set to exceed 100°C.

Now, when the valve is opened as required for consumption, the heated water is discharged from the heating chamber 23 through the pipe in the direction E. When high-temperature water is consumed in this way, a liquid level sensor detects water consumption, and a water supply pump (not shown) is driven or a valve is opened and cold water is sent into the heating chamber 20 in the direction A. . The amount of water corresponding to the water sent into the heating chamber 20, heating chamber 21, heating chamber 22, and heating chamber 23 is sequentially supplied in the directions B, C, and D through the water channels provided in the partitions 14, 15, and 16, respectively. When the liquid level sensor in the heating chamber 23 detects a certain amount of water, the water supply is stopped. Therefore, the cold water supplied to the heating chamber 20 is not directly mixed with the high temperature water stored in the heating chamber 23, and the water supplied to the heating chamber 23 is sufficiently heated in advance in the heating chamber 22. Since it is water, the temperature of the water in the heating chamber 23 does not drop suddenly, and it is possible to reach a predetermined temperature in a short time with a small amount of supplementary heating.

In addition, since the water channels in this example are provided alternately above and below each heating chamber from the upstream to the downstream direction of the water, the water flow is ensured in all parts of the heating chamber, and impurities and precipitates contained in the water are removed. It is possible to prevent such things from accumulating in specific areas of the heating chamber.

In this example, there are four heating chambers, each of which is provided with a heating means, but the number of heating chambers and the number of heating means may be changed as long as the purpose of the present invention is achieved. Well, it is not limited to four rooms.

[Effects of the Invention 1] As described above in detail in the embodiments, the boiler of the present invention extracts water in an amount corresponding to the high-temperature water consumed in the final heating chamber from the water already heated in the previous heating chamber. Since it is designed to be replenished, it is possible to prevent the temperature of the water used from decreasing due to replenishment, and there is an advantage that high-temperature water can always be supplied even when used frequently. Further, the configuration of the present invention has the advantage that the overall boiler has a high thermal efficiency, and the number of heaters and amount of heat can be reduced, and energy consumption can be kept low.

[Brief explanation of drawings]

FIG. 1 is a bronc diagram showing the principle of the present invention,
FIG. 2 is a perspective view showing an embodiment of the present invention with the lid open. 1, ■ 3 ・ 11...Boiler 2.14.15.167...Partition 3.20.21.22.2...Heating chamber 4.2
4.25.26.27 Heating means (heater)

Claims (1)

[Claims] 1) A plurality of successively connected heating chambers each having a heating means therein, a water supply port, a water discharge port, and water channels provided alternately at the top or bottom of the heating chambers according to the water flow direction. Boiler for automatic food feeding machine. 2) The boiler for an automatic food feeder according to claim 1, wherein the heating chamber has a longitudinal partition provided inside the cylindrical body.