JPH0425061Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a liquid supply device, and more specifically, a heat exchange coil is inserted into a closed container that can be filled with a heating medium, and the heating medium is heated by an electric heater. In the liquid supply device configured to supply the liquid in a heated state by exchanging heat between the heated heat medium and the liquid passing through the heat exchange coil, the heat exchange coil may be heated. When the temperature of the coil drops to a predetermined lower limit set due to the liquid passing through, the electric heater starts energizing in response to this, so that even if the liquid is continuously supplied, it is always supplied at a constant temperature. The present invention relates to a liquid supply device that is capable of distributing liquids.

Prior Art For example, a sake container such as a 1-sho bottle is set in an inverted state, and the sake from this container is passed through a supply pipe to a heat exchanger to heat it, and the heated sake is supplied by opening a solenoid valve. When supplying liquid from a liquid supply source, liquid supply devices configured to supply the liquid in a heated state to a desired temperature are widely used, as typified by sake sake vessels that supply sake bottles from pipes. ing.

Sake sake makers, which are the most well-known type of liquid supply device, generally use a heat exchange device shown in FIG. 4 as a means for heating and warming sake. That is, a heat exchange coil 7b is inserted into the airtight container 8, and the heat exchange coil 7b is formed by winding a liquor supply pipe 7 that is connected to a liquor container (not shown) in the middle, and an insulated electric heater 10 is disposed below the coil 7b. It is set up. This airtight container 8 is filled with water that functions as a heat medium and a heat storage material, and the heater 1
When the water is heated to a predetermined temperature, by passing the alcohol through the heat exchange coil 7b, the alcohol becomes hot water. It is heated through heat exchange and is supplied in a so-called warmed state. Note that a temperature sensing element 12 such as a thermostat is inserted into the closed container 8 at a position spaced apart from the heat exchange coil 7b, and monitors the temperature of the water heated by the heater 10 to control the energization of the heater 10. The temperature of the water in the closed container 8 is kept constant by controlling the temperature.

Problems to be Solved by the Invention With the above-mentioned sake warmer, the following problems have been pointed out when brewing sake continuously. In other words, when sake is extracted continuously when heat is exchanged between the sake passing through the heat exchange coil 7b and the hot water heated to a predetermined temperature, the room temperature sake flowing into the heat exchange coil 7b is heated. As a result, negative heat exchange becomes active, and the temperature of the hot water in contact with the outer wall of the coil decreases due to the heat exchange, and the water moves toward the bottom of the container. Further, the hot water whose temperature has not yet decreased rises and contacts the outer wall of the coil to heat it, but the temperature itself relatively decreases. In this way, the hot water exchanges heat while repeating convection within the closed container 8, and the temperature of all the hot water in the closed container 8 finally decreases.

When the temperature of this hot water reaches the lower limit set temperature set in the temperature control circuit of the temperature sensing element 12, the element detects this and restarts energization of the electric heater 10 to heat the hot water again. However, as shown in FIG. 4, the conventional temperature-sensing element 12 is immersed in a suitable place in the closed container 8 to detect the overall temperature of the hot water in the closed container 8. Only when the temperature of the hot water has uniformly decreased, energization of the electric heater 10 is restarted.

Therefore, even when sake is brewed continuously and the temperature of the hot water in contact with the heat exchange coil 7b drops, and it becomes impossible to actually raise the temperature of the sake passing through the coil to the desired temperature, Since the temperature of the surrounding hot water that the temperature sensing element 12 is in contact with is still maintained at a high temperature, a command to restart energization of the electric heater 10 is not issued. In other words, there is a considerable time lag between the time when the temperature sensing element 12 detects the lower limit set temperature and the time when the hot water around the heat exchange coil 7b, which is actually performing heat exchange, reaches the lower limit set temperature. The current situation is that responsiveness is lacking. For this reason, when sake was brewed continuously, the temperature of the warmed sake decreased the later it was poured, and the sake was not heated to a constant temperature.

Furthermore, as mentioned above, the temperature sensing element 12 detects the temperature after the temperature of the entire hot water reaches the lower limit set temperature. The drawback is that it takes a considerable amount of time to raise the temperature to the set temperature.

Therefore, it is conceivable to make the closed container 8 larger and increase the amount of water filled in the container 8 to increase the amount of heat storage and increase the amount of continuous sampling without causing a temperature drop. However, in this case, the airtight container 8
However, there are disadvantages in that the size of the sake simmering device increases and the installation position of the sake sake maker increases, and that a large-capacity electric heater 10 is required, which is uneconomical. In some cases, the temperature of the hot water is raised to 60°C to 70°C without changing the size of the airtight container 8. However, in sake sake brewers, the boiling point of ethanol, which is a component of the sake to be heated, is approximately 78°C, so there is a concern that the ethanol may evaporate due to heating, making it difficult to pour at an appropriate temperature. Problems have also been pointed out, such as causing negative changes in the taste of warmed sake.

Purpose of the Invention The present invention was proposed in order to suitably solve the above-mentioned drawbacks inherent in the liquid supply device. The purpose of the present invention is to provide a means for continuously collecting liquid at a certain temperature.

Means for Solving the Problems In order to overcome the above-mentioned problems and achieve the intended purpose, the present invention involves winding a liquid supply pipe communicating with a liquid supply source in the middle to form a heat exchange coil. death,
The heat exchange coil is inserted into a closed container that can be filled with a heat medium, and heat is generated between the heat medium heated and heated by an electric heater disposed in the closed container and the liquid passing through the heat exchange coil. In the liquid supply device configured to perform exchange and heat the liquid, a temperature sensing element connected to a circuit that controls energization to the electric heater is closely arranged on the liquid inflow side of the heat exchange coil. It is characterized by being configured so that

Embodiment Next, the liquid supply device according to the present invention will be described below with reference to the accompanying drawings, using a sake sake maker as a preferred embodiment. Although the purpose of the present invention is to provide a structure for arranging a temperature-sensitive element that can suitably control the on/off of current in an electric heater, in order to contribute to the overall understanding, we will introduce a sake sake cup as shown in Fig. 1. First, the schematic structure of the vessel will be explained.

(Schematic configuration of sake sake cup) The sake sake cup 1 has a main body 2 having a box-like exterior body,
This main body 2 is supported via a support 3 on a base (not shown). A circular opening 4a is formed in the top plate 4 of the main body 2, and a sake sake cup 6 made of, for example, a 1-sho bottle is placed in a truncated conical receptacle 5 with an open top inserted into the opening 4a. It is designed to be set in an inverted position.

At the bottom of the conical receiver 5 is a liquid supply pipe 7 made of a metal with good thermal conductivity, such as a stainless steel pipe.
One end 7a is connected for communication, and this liquid supply pipe 7
is spirally wound in a cylindrical closed container 8 during its extension to form a heat exchange coil 7b, and then led out from the closed container 8 and attached to the other end 7c to a drinking pipe 9, which will be described later. are connected at. Inside the airtight container 8, there is a circular insulated electric heater 1 directly below the central axis aligned perpendicular to the heat exchange coil 7b.
0 is disposed, and the hot water in the container heated by the heater 10 and the liquor passing through the liquid supply pipe 7 are heat exchanged at the heat exchange coil 7b. Therefore, the closed container 8, the heat exchange coil 7b, and the electric heater 10 constitute a heat exchanger 11 using water as a medium.

The liquor supply pipe 9 is made of a material having good electrical insulation properties, such as a ceramic pipe, and is connected to the other end 7c of the liquid supply pipe 7 via a heat exchanger 11 via a solenoid valve 13. . This drinking pipe 9
extends vertically downward and connects to the bottom plate 14 of the sake sake main body 2.
A drinking spout 9a opens at a position extending from a through hole 14a opened in the above.

A pair of electrodes 15, 15 connected to a liquid level detection circuit (not shown) are arranged along the pipe body on the left and right sides of the liquor pipe 9, and the lower ends of the electrodes 15, 15 are connected to the liquor pipe 9. It is located slightly above the drinking spout 9a by a predetermined distance. Therefore, the receptor 16 for sake bottles etc.
The socket 16a is inserted into the drinking pipe 9 to dispense alcohol, and when the liquid level rises and comes into contact with the lower ends of the electrodes 15, 15, it is detected that the drinking has ended at a predetermined liquid level. Then, the closing of the electromagnetic valve 13 is commanded and controlled.

A fixed position detection means 17 consisting of a micro switch is disposed within the sake sake main body 2 and close to the through hole 14a formed in the bottom plate 14, and a detection piece 17a that functions as an operating lever for the switch 17 is provided.
faces diagonally above the through hole 14a. This fixed position detection means 17 is connected to an electric control circuit (not shown), and the operation of the means 17 commands and controls the opening of the electromagnetic valve 13.

Further, a position regulating member 18 in the shape of a spool or reel is inserted into the through hole 14a of the bottom plate 14, and is movable up and down by a required stroke. During the upward movement trajectory of the position regulating member 18, the detection piece 17a of the fixed position detection means 17 described above
is coming. Furthermore, the drinking pipe 9 having an outer diameter set slightly smaller than the inner diameter of the through hole 18a is concentrically inserted into the center through hole 18a of the position regulating member 18.

A support pestle 23 made of, for example, a square bar is suspended and fixed to the lower surface of the bottom plate 14 of the sake sake body 2, and a mounting plate 24 for placing a receptacle 16 such as a sake bottle on this support pestle 23 is fixed. , is inserted through a boss 25 integrally formed therein so as to be able to move up and down. Further, an adjustment member 26 is provided near the lower end of the support punch 23 so that the height thereof can be adjusted freely by means of a fixing screw 27 screwed into the adjustment member 26. Therefore, the receiver 16 is placed on the mounting plate 24.
When placed and moved upward, the socket 16a of the receiver 16 comes into contact with the bottom surface of the position regulating member 18, and the drinking spout 9a of the drinking pipe 9 is inserted into the socket 16a. . When the receptor 16 is further moved upward, the position regulating member 18 is moved upward by a predetermined distance.
The upper end surface is the detection piece 17a of the fixed position detection means 17.
The means 17 is energized by contacting the electromagnetic valve 13.
Sake extraction is carried out by controlling the opening of the bottle.

(Regarding temperature detection means of heat exchange coil) Heat exchange coil 7b constituting the heat exchanger 11
A known temperature control circuit 2 is installed at the top (liquor inflow side) of the
A temperature sensing element 12 (e.g. thermostat) connected to the heater 10 is directly arranged to monitor the temperature of the outer surface of the heat exchange coil 7b, thereby controlling the temperature of the heater 10.
The water temperature in the heat exchanger 11 is maintained constant by controlling the energization. That is, as shown in FIGS. 2 and 3, the temperature sensing element 12 is placed in close contact with the outer surface of the heat exchange coil 7b, and the temperature sensing element 12 and the heat exchange coil 7b are commonly connected by a fixing band 29. By winding the band 29 around the band 29 and tightening both ends of the band 29 with bolts 30, reliable fixation is achieved. Thereby, the temperature sensing element 12 can immediately detect the temperature of the outer surface of the coil, which varies depending on the temperature of the cold sake flowing through the heat exchange coil 7b and the temperature of the surrounding hot water that comes into contact with the coil.

Function of the present embodiment Next, the function of the sake sake maker according to the present embodiment configured as described above will be explained. When a predetermined amount of water is poured into the airtight container 8 and the electric heater 10 is energized to heat the water, the water temperature gradually rises and the heat exchange coil 7b
surface temperature increases due to heat exchange with hot water. The temperature sensing element 1 is arranged in close contact with the heat exchange coil 7b.
2 constantly monitors the outer surface temperature of the heat exchange coil 7b, and when it detects that the temperature has reached the upper limit temperature preset in the temperature control circuit 28, the temperature control circuit 28 Electric heater 1
Cuts off (turns off) the power to 0.

In this state, when the sake container 6, such as a one-sho bottle, is placed upside down on the receiver 5 after removing the stopper, and the solenoid valve 13 is opened, the sake in the sake container 6 flows down the liquid supply pipe 7. The heated sake is heated by exchanging heat with the heated water in the heat exchange coil 7b in the closed container 8, and the sake is supplied from the above-mentioned drinking pipe 9. Also, by heat exchange, the heat exchange coil 7b
The temperature of the hot water that comes into contact with the outer surface of the container decreases, and as a result, convection is repeated in which the hot water whose temperature has not yet decreased rises.

When this hot sake is poured intermittently, the temperature decrease due to heat exchange of the hot water that contacts the outer surface of the heat exchange coil 7b is small, and therefore the electric heater 10
This allows the temperature of the sake to be poured out to be maintained at the desired heating temperature without having to be reheated. However, when the demand for hot sake at restaurants, etc. increases over time, and sake is extracted almost continuously from the sake warmer, cold sake from the sake container 6 is continuously fed to the heat exchange coil 7b. He will be sent. In this case, as mentioned above, conventionally, even if the temperature of the hot water in contact with the heat exchange coil 7b drops below a temperature that can properly warm the sake, the overall temperature of the hot water in the closed container 8 drops. Unless this is done, the temperature sensing element 12 will not detect the lower limit set temperature, resulting in the disadvantage that sake with a lowered warming temperature will be supplied.

However, according to this embodiment, when the temperature of the hot water in contact with the heat exchange coil 7b decreases due to the continuous passage of cold sake, and the outer surface temperature of the coil reaches the lower limit set temperature, the The temperature sensing element 12 detects this in real time,
A power-on command is issued to the electric heater 10 via the temperature detection means 28 to heat the hot water again. At this time, since not all of the hot water in the closed container 8 has fallen to the lower limit temperature set in the temperature control circuit 28, the hot water can be raised to the original set temperature in an extremely short time. . Also, by re-energizing the electric heater 10, the heat exchange coil 7
When the temperature of the hot water in contact with b reaches the upper limit set temperature, the temperature sensing element 12 immediately detects this and issues a command to turn off the electricity to the electric heater 10 to stop heating the hot water. Therefore, the sake passing through the heat exchange coil 7b is always heated to a constant temperature.

The temperature of the outer surface of the heat exchange coil 7b, which is cooled by the cold sake, is constantly monitored and the energization of the electric heater 10 is controlled by controlling the hot water that is in contact with the vicinity of the outer surface of the heat exchange coil 7b. By controlling the hot water in relation to the temperature of the hot water, it is possible to reheat the hot water in the closed container 8 before the temperature of all the hot water in the closed container 8 decreases to the lower limit set temperature due to convection.
Therefore, hot water can be raised to a predetermined temperature in a short time,
It is possible to always supply warmed sake at a constant temperature. As shown in FIG. 1, the temperature sensing element 12 is located at the liquor inflow section on the upstream side of the heat exchange coil 7b. According to this, a decrease in the temperature of the heat exchange coil 7b due to the inflow of cold sake can be detected more quickly, which is preferable.

Effects of the Invention As explained above, according to the liquid supply device according to the present invention, the temperature sensing element of the temperature detection means is disposed closely to the heat exchange coil inserted in the closed container. It is possible to quickly detect that the heat exchange coil has been cooled by being supplied with heat, and the electric heater can reheat the heat medium filled in the closed container before the heat medium is completely reduced. Therefore, even if the liquid is continuously sampled, there is an advantage that the liquid is always supplied at a constant temperature. Also, before the temperature of the heat medium filled in the container drops significantly,
Since it can be heated to a predetermined temperature in a short time, it has the effect of reducing electricity costs.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view showing a schematic configuration of a sake sake maker according to a preferred embodiment of the liquid supply device according to the present invention, and FIG. 2 is an enlarged view showing the main parts of the sake sake maker shown in FIG. 1.
3 is a sectional view taken along the line -- in FIG. 2, and FIG. 4 is a longitudinal sectional view showing a heat exchange device according to the prior art. 6...Liquid supply source, 7...Liquid supply pipe, 7b...
... Heat exchange coil, 8 ... Airtight container, 10 ... Electric heater, 28 ... Temperature control circuit.

Claims (1)

[Claims for Utility Model Registration] A heat exchange coil 7b is formed by winding a liquid supply pipe 7 communicating with a liquid supply source 6 in the middle thereof, and the heat exchange coil is placed in a closed container 8 that can be filled with a heat medium. 7b is inserted, and heat is exchanged between the heat medium heated and heated by the electric heater 10 disposed in the sealed container 8 and the liquid passing through the heat exchange coil 7b, thereby heating the liquid. In the liquid supply device configured to:
8. A liquid supply device characterized in that a temperature sensing element 12 connected to the heat exchange coil 7b is closely disposed on the liquid inflow side of the heat exchange coil 7b.