JP2002005518A - Instantaneous water heater having cassette-type gas cylinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a hot water heater, which is easy to carry and capable of instantaneously boiling water through heat exchanger by only connecting it to a water source, in a manner such that liquefied gas in a cassette gas cylinder is employed as the heat source. SOLUTION: An instantaneous water heater comprises water supply line 1, running from a water inlet 11 into a gate pipe 12 via a heat exchanger 2; gas line 3 running from a cassette gas cylinder 4 to a gas burner 5 of the heat exchanger 2; an ignition operation valve device 6 having composite structure consisting of a piezoelectric ignition device for discharge ignition, situated in the gas line 3 on the gas burner side, and a stopcock; a hydraulically-operated gas valve device 8 extending from the water supply line 1, running between the water inlet 11 and the heat exchanger 2 to the gas line 3; an interlocking valve device 9 to open and close simultaneously both the water supply line 1 and the gas line 3; and a water amount regulating valve device 10 for the water supply line 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable instantaneous water heater having a liquefied gas of a cassette gas cylinder as a heat source.

[0002]

The conventional portable small-sized water heater is a hot water storage type in which water is stored in a container and heated by electric heat, and requires a long heating time. Further, since the heating is stopped after the boiling water and the hot water is used, the temperature of the hot water drops with the lapse of time. Therefore, when using the stored hot water, reheating is necessary. Furthermore, since the amount of hot water to be boiled at one time is also limited, most of them are used as water heaters for beverages.

An object of the present invention is to use a liquefied gas filled in a cassette gas cylinder used for a tabletop gas stove as a heat source, employ a heat exchanger for heating, instantaneously convert water into hot water, It is an object of the present invention to provide an instant water heater equipped with a compact and easy-to-carry cassette gas cylinder capable of continuously supplying hot water until the water is stopped.

The present invention can be applied to a wide range of uses other than beverages, for example, kitchens, washrooms, offices, treatment rooms, nursing rooms without hot water supply facilities, and emergency and outdoor use in the event of disasters or emergencies. Another object of the present invention is to provide an instant water heater having a cassette gas cylinder which can be used for the above-mentioned purpose.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a water supply pipe extending from a water port to a gate through a heat exchanger;
A gas passage extending from the cassette gas cylinder to the gas burner of the heat exchanger; an ignition valve device having a combined structure of a piezoelectric ignition device and a cock for discharge ignition provided in a gas line on the gas burner side; Gas valve device that opens and operates by water pressure provided between the water supply line and the gas line between the water supply device, an interlocking valve device that simultaneously opens and closes both the water supply line and the gas line, and the amount of water provided in the water supply line And a regulating valve device.

The heat exchanger according to the present invention has a large-diameter heat exchange cylinder in which a heat exchange pipe forming a part of a water supply pipe is wound around the outside thereof, and heat exchange is performed by penetrating the pipe. It consists of multiple heat exchange plates mounted on the upper opening of the cylinder, and the gas burner with discharge electrodes connected to the gas pipeline and installed upward in the lower opening of the heat exchange cylinder. .

The gas valve device according to the present invention further comprises a valve body having a small-diameter cylinder integrally formed with a step portion left at an inner end of a pipe having a water port, and having an outlet at a side portion; A diaphragm whose plate surface is deformed by water pressure provided on the diaphragm, a valve shaft provided with its tip abutting on the negative pressure side of the diaphragm so as to be able to advance and retreat in the cylinder, and the valve shaft being constantly resiliently pressed to the diaphragm side, The valve body at the rear end is in contact with the valve seat in the rear chamber of the cylinder and is closed by a spring member in the front of the cylinder. The inlet and outlet of the gas pipe are formed in the cylinder wall before and after the valve seat. It is to prepare.

The above-mentioned interlocking valve device of the invention comprises a pair of cylinders having an inflow port at an outer end and an inflow port at a side, a hollow valve body having a pair of cylinders for water supply and gas, which are juxtaposed at the end. The valve body at the rear end faces the valve seat at the outflow port, and is mounted inside the cylinder so as to be able to advance and retreat together with the spring member for closing the valve. It comprises an operating member with a rotatable lever in the valve body that simultaneously presses the valve shaft to open the water supply line and the gas line at the same time.

In the above configuration, a tap, a pressurized water tank, or the like can be used by connecting the water port. Water from a water port having a constant pressure flows through the gas valve device and reaches the interlocking valve device in a closed state. The flow rate of this water can be arbitrarily set by the above-mentioned water amount adjusting valve device. In the gas valve device, the gas pipeline is opened by water pressure, and the liquefied gas from the cassette gas cylinder flows out to the interlocking valve device.

Next, when the interlocking valve device is opened, water flows through the heat exchanger to the hot water supply pipe, and the liquefied gas reaches the ignition operation valve device. When the ignition operation valve device is operated to open the valve and generate high-pressure electricity by the piezoelectric ignition device, the liquefied gas is ejected from the gas burner of the heat exchanger as a mixed gas with air, and the high-pressure electricity is discharged. It becomes a discharge spark between the electrodes, and ignites and burns the ejected mixed gas. This combustion heats the heat exchanger, and the water becomes hot water while passing through the heat exchanger and flows out of the sprue pipe. Hot water supply can be easily stopped by closing the interlocking valve device and then returning the ignition operation valve device to close the gas pipeline.

The temperature of the hot water can be adjusted by changing the amount of water by the above-mentioned water amount adjusting valve device, or by controlling the heat generation amount by changing the gas flow rate by the ignition operation valve device. As means for preventing a pressure drop due to latent heat of evaporation of the cassette gas cylinder during long-term combustion, it is preferable to receive the waste heat of the heat exchanger by a heat panel and to feed back heat to the cassette gas cylinder by heat conduction.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an outline of the present invention, in which 1 is a water supply conduit from a water inlet 11 to a hot water supply pipe 12 through a heat exchanger 2 and 3 is a cassette gas cylinder 4 to the heat exchanger. A gas line leading to the second gas burner 5 is provided with a rotary ignition operation valve device 6 of a normal structure having a combined structure of a piezoelectric ignition device (not shown) and a cock in the middle thereof. 7 is a heat panel of the above-mentioned cassette gas cylinder 4.
The waste heat of the heat exchanger 2 is fed back to the cassette gas cylinder by heat conduction to prevent the pressure drop due to the latent heat cooling of the cassette gas cylinder.

A water supply line 13 between the water outlet 11 and the heat exchanger 2 has a gas valve device 8 that automatically opens and closes the gas line 3 by water pressure over the gas line 3 and a water supply line manually. An interlocking valve device 9 for simultaneously opening and closing both the line 1 and the gas line 3 is provided. A water amount adjusting valve device 10 is provided in a water supply pipe 13 between the gas valve device 8 and the interlocking valve device 9.

The heat exchanger 2 has a large-diameter heat exchange cylinder 21.
A pipe 22 for heat exchange wound around the outer periphery thereof, a plurality of heat exchange plates 23 inserted through the pipe 22 and placed on the upper opening of the heat exchange cylinder 21, And the gas burner 5 installed upward in the lower opening of the heat exchange cylinder 21. A pair of the discharge electrodes 5 a is provided above the ejection opening of the gas burner 5 to the ignition operation valve device 6. It is connected to the tip of a lead wire 5b derived from a built-in piezoelectric ignition device (not shown).

The pipe 22 is made of a metal material having good heat conductivity, such as copper or a copper alloy, similarly to the heat exchange tube 21.
The lower end thereof is connected to the water supply pipe 1 via a drain valve 24, and the hot water supply pipe 12 is rotatably connected to the upper end protruding from the heat exchange plate 23 by a universal joint 25. And a part of the water supply pipe 1 leading to. The universal joint 25 is provided with an empty combustion sensor 26 electrically connected to the ignition operation valve device 6. When the temperature of the universal joint 25 detected by the empty combustion sensor 26 rises to a set temperature or more, The ignition operation valve device 6 closes the cock to stop the gas supply.

The gas line 31c before reaching the gas burner 5 extends along the side of the heat exchange tube 21 by radiant heat from the heat exchange tube 21 to promote the vaporization of the liquefied gas in the line. Detour is provided.

The gas valve device 8 has a tubular water port 11.
A small-diameter cylinder 8
1 is formed integrally with the step portion left, and an outlet 82 is provided on the side portion near the step portion, and the inside of the tube body 80 is arranged so that the plate surface faces the step portion with a required deformation space. , A valve shaft 84 having a distal end abutting on the negative pressure side of the diaphragm 83 so as to be able to advance and retreat in the cylinder 81, and the valve shaft 84 being constantly connected to the diaphragm 83.
And a spring member 88 in the front portion of the cylinder that closes the valve body 85 at the rear end of the valve shaft by contacting the valve body 85 at the rear end of the valve shaft with the valve seat 87 of the cylinder rear chamber 86. An inflow port 81a is provided at the end, and an outflow port 8 is provided at the front side wall of the cylinder.
1b, a gas line 31 of the cassette gas cylinder 4 is connected to an inlet 81a, and a gas line 32 of the interlocking valve device 9 is connected to an outlet 81b.

The interlocking valve device 9 comprises a pair of cylinders 91, 91 having an inlet 91a at the outer end of the cylinder and an outlet 91b provided at the side wall of the cylinder, respectively. Hollow valve body 92 connected continuously
And the valve body 93 at the rear end into the cylinder 91
A valve shaft 95 provided so as to be able to move forward and backward facing the valve seat 94 on the b side.
The valve shaft 93 is constantly resiliently pressed to bring the valve body 93 into pressure contact with the valve seat 93, and a valve closing spring member 96 that projects the shaft tip 94 a into the valve body 92 and the shaft tip 93 a. A valve body 92 that simultaneously presses a pair of valve shafts 93 and 93 to open the water supply line 1 and the gas line 3 at the same time.
And an operation member 98 with a lever 99 that is rotatable by an internal cam 97 and the like.

At the time of using the instant water heater, a filter 11a is provided on the water port 11 and a regulator 41 is connected to the gas valve device 8 in order to stabilize the gas combustion by stabilizing the vaporization of the liquefied gas from the cassette gas cylinder 4. A liquefied gas is supplied at a constant pressure.

When used, each valve device is in a closed state, but is connected to a water tank provided with a water tap or a pressurized pump as a water source by a hose or the like (not shown) at the water port 11, and is connected to the water tap or the water tank. When the valve is opened, water having a predetermined pressure flows into the valve body of the gas valve device 8 from the water port 11 and flows from the outlet 82 to the interlocking valve device 9 in a closed state.

In the gas valve device 8, the plate surface of the diaphragm 83 is deformed by the water pressure, and the valve shaft 84 in the cylinder 81 is pressed and moved against the return spring 88. As a result, the valve body 85 also moves away from the valve seat 87 and the gas line 3
Is opened, and the liquefied gas from the cassette gas cylinder also flows out to the interlocking valve device 9.

Next, when the operating member 98 of the interlocking valve device 9 is manually rotated, the cam 97 causes the pair of valve shafts 95,
95 are simultaneously pressed, and the valve shafts 95, 95 are pressed against the valve closing
3 and 93, and both the water supply line 1 and the gas line 3 are simultaneously opened. The operating member 98 after the valve is opened is the spring member 9
Since the pressure is maintained at 6, the valve-open state is maintained unless the pressure is restored.

Thus, water is transferred to the pipe 2 of the heat exchanger 2.
The liquefied gas flows through the sluice pipe 2 through the sluice 2 and reaches the ignition operation valve device 6. Therefore, the ignition operation valve device 6
When the operation member 61 is rotated, the cock of the gas pipe 3 is first opened, and the liquefied gas flows out to the gas burner 5. In the gas burner 5, the liquefied gas is mixed with air and jetted into the heat exchange cylinder 21.

Following the opening of the valve, the piezoelectric igniter operates, and high-voltage electricity is generated by the impact of the piezoelectric element, and a discharge spark is generated between the electrodes 5. Due to this discharge spark, the mixed gas ejected from the burner nozzle 5 is ignited and combusted, and the heat exchanger 21 is heated, and the water in the pipe 22 becomes hot water while passing through the heat exchanger 2 and flows out of the sprue pipe 12. .

When the hot water supply is stopped, first, the operating member 98 of the interlocking valve device 9 is rotated by the lever 99 to return to the original position. Thereby, the valve shaft 9 by the cam 95
5 is released, the valve shaft is restored, the valve element 93 is pressed against the valve seat 94 by the spring member 96, and both the water supply line 1 and the gas line 3 are closed at the same time, and water and gas Both supply stops. Next, the ignition operation valve device 6 is turned on the basis of the operation member 61 to close the cock of the gas pipe 3 and prepare for the next hot water supply.

In the water heater with such a mechanism, as long as the water is supplied from the water source, the hot water can be continuously supplied until the fuel runs out. In addition, even when the hot water is reused after stopping the hot water, the hot water is immediately heated by opening the valve and the ignition operation. Therefore, even when the hot water is required intermittently, the hot water can be immediately supplied to the hot water. The size is box type, 215mm in width, 270mm in height, and 280 in height
Since it can be packaged in a size of about mm and compact enough to be easily carried, it can be widely used for other purposes such as kitchens and washrooms without hot water supply facilities other than beverages. If a water tank is used as a water source, it can be used outdoors in the event of a disaster or emergency.

In the present invention, although omitted from the drawings, it goes without saying that the safety can be improved by employing an extinguishing sensor, an overturning switch, etc., which are usually used in gas combustors.

[Brief description of the drawings]

FIG. 1 is a schematic view of an instantaneous water heater provided with a cassette gas cylinder according to the present invention.

FIG. 2 is a front view in which a cover is cut longitudinally.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of the same.

FIG. 5 is a vertical sectional side view when the gas valve device and the interlocking valve device are closed.

FIG. 6 is a side view of the interlocking valve device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water supply pipe 2 Heat exchanger 3 Gas pipe 4 Cassette gas cylinder 5 Gas burner 6 Ignition operation valve device 7 Heat plate 8 Gas valve device 9 Interlocking valve device 10 Water amount adjustment valve device 11 Water port

Continued on the front page F term (reference) 3L034 AA01 AB03 4B055 AA37 BA34 BA35 BA39 CA67 CA69 CA71 CB04 CB09 CC28 CC58 DB08 EA03

Claims (4)

[Claims] 1. A water supply line from a water port to a gate gate via a heat exchanger, a gas line from a cassette gas cylinder to a gas burner of a heat exchanger, and a discharge ignition line provided in a gas line on a gas burner side. An ignition operation valve device having a combined structure of a piezoelectric ignition device and a cock, a gas valve device that is opened by water pressure provided between a water supply line and a gas line between the water port and the heat exchanger, and a water supply line. An instant water heater equipped with a cassette gas cylinder, comprising an interlocking valve device for simultaneously opening and closing both gas lines and a water amount adjusting valve device provided in the water supply line. 2. The heat exchanger according to claim 1, wherein the heat exchanger has a large-diameter heat exchange pipe wound around a heat exchange pipe that forms a part of a water supply pipe around the outside.
Multiple heat exchange plates inserted through the conduit and placed at the upper opening of the heat exchange cylinder, and the gas with discharge electrodes connected to the gas conduit and installed upward in the lower opening of the heat exchange cylinder The instant water heater provided with a cassette gas cylinder according to claim 1, comprising a burner. 3. The gas valve device according to claim 1, wherein a small-diameter cylinder is integrally formed with a stepped portion left at an inner end of a pipe having a water port.
A valve body provided with an outflow port on the side, a diaphragm provided on the step, the plate surface of which is deformed by water pressure, and a valve shaft provided to be able to move forward and backward in the cylinder by abutting its tip against the negative pressure side of the diaphragm. And a spring member in the front of the cylinder, which constantly presses the valve shaft toward the diaphragm and abuts the valve body at the rear end of the valve shaft against the valve seat of the cylinder rear chamber to close the valve. 3. A water heater comprising a cassette gas cylinder according to claim 1 or 2, wherein the cylinder wall is provided with an inlet and an outlet of a gas pipe. 4. An interlocking valve device comprising: a pair of cylinders having an inflow port at an outer end and an inflow port at a side section; The valve body at the rear end faces the valve seat at the outflow port, and is housed so as to be able to advance and retreat together with a spring member for closing the valve. The operating member with a rotatable lever in a valve body that simultaneously presses and operates a shaft to open a water supply line and a gas line at the same time, according to any one of claims 1 to 3, wherein Instant water heater with cassette gas cylinder.