JPH02597Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a siphon-type heating device that communicates a bathtub or other load with a bathtub or other heating pot via a siphon pipe.

(Prior Art) Conventionally, a bath pot connected to a bathtub via a siphon pipe is equipped with a gas burner or other heat source that is controlled to be turned on at the upper limit position of the water level in the pot and turned off at the lower limit position. When the heat source is turned on, the inside of the cauldron is heated to produce steam, which is guided into the bathtub through the siphon tube to heat the water inside it, and then the water level in the cauldron is increased. When the heat source is turned off as the temperature decreases, the inside of the pot is cooled and the steam condenses, and the water in the bathtub is alternately led into the pot through the siphon pipe. Formulas that are repeated are known.

(Problem to be solved by the invention) In this case, a cooling promotion tank is connected to the heating pot, and the water in the tank is returned to the heating pot to actively cool it and prevent the condensation of steam in the heating pot. It is conceivable to bring forward the timing at which the accelerated heat source starts operating.

However, if only the cooling accelerator tank is connected to the siphon pipe, the hot water in the pot is sent out through the cooling accelerator tank at steam pressure before the steam is sent out through the siphon pipe at the start of boiling after the heat source is activated. As a result, the amount of hot water in the pot quickly decreases, shortening the operating time of the heat source, which actually has the disadvantage of lowering operating efficiency.

(Means for Solving the Problems) The present invention provides a device free from such inconveniences, in which a bathtub or other load 1 is connected to a bathtub or other heating pot 3 which is communicated via a siphon pipe 2. The pot 3
In a type equipped with a gas burner or other heat source 4 that is controlled to be switched on at the upper limit position of the water level and off at the lower limit position, the siphon is placed below the upper limit position in the pot 3 and above it. A cooling acceleration tank 5 communicating with the pipe 2 is provided, and the cooling acceleration tank 5
A valve 6 is provided to close a valve port 8 interposed in a communication portion 7 between the siphon pipe 2 and the cooling promotion tank 5 when the heat source 4 starts operating.

(effect) The effect of the present invention will be explained.

Now that the heat source 4 is turned on, steam is generated in the pot 3, which is introduced into the load 1 and heats the water therein, and then the water level in the pot 3 reaches the lower limit position. Considering the case where the heat source 4 is turned off, the water vapor in the pot 3 gradually condenses, the pressure in the pot 3 decreases, and the water in the bathtub returns to the pot 3, but it takes time. It takes.

However, in the present invention, during such operation, the valve port 8 is unblocked by the valve 6, so the cooling acceleration tank 5
The water stored in the pot returns to the pot 3, and at this time, the pot 3 and the hot water in the pot 3 are actively cooled, and thus the condensation of the steam in the pot 3 is greatly promoted. Water is introduced into the interior of the heat source 4 through the siphon pipe 2, and its water level quickly rises.
can be turned on. That is, although the heat source 4 alternately turns on and off, the time during which it is turned off is greatly shortened.

However, when this is done, water in the pot 3 flows out to the load 1 side through the cooling promotion tank 5 during operation, and by reducing the amount of water in the pot 3, the on-time is shortened. There is an inconvenience.

However, in the present invention, since a valve 6 is provided that closes when the heat source 4 starts operating, the movement of water in the pot 2 can be reliably prevented by the valve 6.

(Example) An example of the present invention will be described in the case of a bath kettle.

In the drawing, 1 is a bathtub as a load, 3 is a bath pot as a heating pot, and 2 is a siphon pipe that communicates both 1 and 3 with each other. A heat source 4 is provided, which is a gas burner that is controlled to be turned on at the lower limit position and turned off at the lower limit position. More specifically, the pot 3 is provided with an upper limit water level sensor 5 for detecting the upper limit position and a lower limit water level sensor 6 for detecting the lower limit position, and the output signals of both sensors 5 and 6 are transmitted through the control circuit 7. Then, the gas passage 4a connected to the heat source 4 is actuated by the intervening control valve 4b to give a predetermined opening/closing operation to the gas passage 4a.

The above is not particularly different from the conventional one; when the heat source 4 is turned on, the inside of the pot 3 is heated and the water therein turns into steam, which flows into the bathtub 1 via the siphon pipe 2. When the water level inside the pot 3 is lowered to the lower limit position and the heat source 4 is turned off, the inside of the pot 3 is cooled and the water vapor is condensed. As a result, the water in the bathtub 1 is introduced into the pot 3 via the siphon pipe 2 and the water level rises, which is repeated alternately to boil water.

In such a case, the present invention provides a cooling acceleration tank 5 that communicates with the lower upper limit position in the pot 3 and the siphon pipe 2 above it, and the siphon pipe including the cooling acceleration tank 5 is provided. 2, a valve port 8 and a valve 6 are provided at arbitrary locations in the communication part leading to the heat source 4. The valve shown in FIGS. 1 and 2 uses a float valve as the valve 6, When the water is rising, the valve 6 floats to close the valve port 8, and while the heat source 4 is in operation, the water surface inside the pot 3 is pushed by the high steam pressure generated. siphon tube 2
As much as the pressure is reduced due to the steam inside flowing out,
The water in the cooling acceleration tank 5 is kept at a higher level than the water level in the pot 3.

In this case, when the heat source 4 becomes inoperable due to a drop in the water level in the pot 3, water whose temperature is slightly lower than the water temperature in the pot 3 in the cooling promotion tank 5 is supplied to the pot 3 due to its own weight. be done.

Therefore, as mentioned above, the condensation of the steam within the pot 3 is promoted.

However, as shown in FIG. 3, the valve 6 may be a horizontal valve that has a guide section at the top and opens by its own weight; in this case, the heat source 4 is activated when the water surface rises to the upper limit position. Then, as a result of the water surface of the pot 3 being pushed down by the generated steam pressure, the water tries to flow out to the siphon pipe 2 side via the cooling promotion tank, but the water is pushed down from below by the dynamic pressure change in the valve port 8. Pressure is applied and valve 6 closes valve port 8.

Note that when the water level in the pot 3 falls to the lower limit position, the heat source 4 becomes inactive, and at this time as well, the pressure drops rapidly due to its own weight, so water in the cooling acceleration tank 5 flows into the pot 3.

In the drawings, reference numeral 12 indicates an air cooling fan that is opposed to the outside of the cooling acceleration tank 5.

(Effect of the invention) As described above, according to the invention, a cooling promotion tank is provided that communicates with the siphon pipe above the upper limit position in the heating pot, and when the heat source starts operating, the cooling promotion tank is connected to the siphon pipe. Since a valve is provided to close the valve port at any point that communicates through the cooling promotion tank, it is possible to stop the water flowing through the cooling promotion tank and flowing into the siphon pipe when the heat source starts operating. As a result, compared to simply providing a cooling accelerating tank, the rate of decrease in the amount of hot water in the pot is suppressed and the operating time of the heat source is extended, which is compatible with the cooling accelerating effect of the cooling accelerating tank on the steam in the pot 3. This has the effect of providing a siphon-type heating device that can perform efficient heating as a whole.

[Brief explanation of the drawing]

FIG. 1 is a cutaway side view showing one example of implementing the present invention;
FIG. 2 is a cutaway side view of the main part thereof, and FIG. 3 is a cutaway side view of another embodiment. 1... Load, 2... Siphon tube, 2... Heating pot, 4... Heat source, 5... Cooling acceleration tank, 6...
Valve, 7...Communication part, 8...Valve port.

Claims (1)

[Scope of utility model registration request] A type in which a bath pot or other heating pot connected to a bathtub or other load via a siphon pipe is equipped with a gas burner or other heat source that is controlled to be switched on at the upper limit position of the water level in the pot and off at the lower limit position. A cooling acceleration tank is provided that communicates with the upper limit position in the pot and the siphon pipe above the upper limit position, and when the heat source starts operating, the cooling acceleration tank is connected to the siphon pipe and the cooling acceleration tank. A siphon-type heating device comprising a valve that closes a valve port located in a communication section with the siphon type heating device.