DE2728856A1 - WATER HEATER - Google Patents

Description

27288b6

Bike. Finkener, Ernesti

Patent attorneys
HeiiJricIi-Koenig-Str. 12th

4630 Bochum

77 123

CHAFPOTEAUX ET MAURT

Water heater.

The invention relates to gas-fired water heaters, in particular for sinks in which the combustion of a gas is used to heat water for dispensing water over a sink and another container.

These devices work satisfactorily for the use (kitchen, dishes, etc.) for which they are intended, and which allows a relatively long time of the order of a few tens of seconds for the temperature rise and in general requires the delivery of water that is not too cold and whose temperature remains below about 70 ° C.

However, these devices are not suitable for the

instantaneous withdrawal of a relatively small volume of boiling water, as is desirable for a large number of uses can be, e.g. the immediate preparation of a cup of coffee or an infusion, the quick cooking of vegetables or of a soft egg, etc.

Furthermore, their total instantaneous heating capacity is generally relatively low.

In particular, the invention aims to make the water heaters of the above type of instant output such to adapt to lower volumes of boiling water and / or to increase the overall instantaneous heating capacity of these water heaters.

For this purpose, the water heaters according to the invention are characterized in that they are within the boundaries on the outside Casing apart from its usual components (gas

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burners, radiators, etc.) contain a water balloon, which is assigned electrical heating means, which its contents on can heat a temperature T of the order of 95 ° C., the balloon being connected to an outer discharge port via a *, of outside of the cladding actuatable tap is connected.

Preferred embodiments can also do one and / or have the other of the following characteristics:

- The two pipes, which are heated with cold water, the two with grass or with electricity (the water heater's vessels feed are in turn fed from one and the same line, which comes from outside the disguise and constantly is connected to these two lines inside the fairing;

- the hot water balloon has a relatively small, volume lying between 1 and 15 liters, and preferably between 5 and 10 liters;

- The electrical heating power is relatively high and is preferably of the order of 2 to 3 kW;

- The part of the water heater that works with the combustion of gas is equipped with at least one electrically controlled one Accessory fitted;

- in a water heater according to the previous paragraph, the electrically controlled accessory is a gas lighter;

- in a water heater according to one of the two preceding Paragraphs, the electrically controlled accessory is a safety device that prevents local contamination with carbon dioxide or carbonic acid gas is sensitive;

- There are means provided which the amount of cold water supplied to the balloon after a withdrawal on such a Limit the value that all of this amount is heated to the temperature T during its supply.

The invention is explained below by way of example with reference to the drawing, the single figure of which is schematic shows a gas-heated water heater for sinks according to the invention.

The "gas part ^{11 of} the water heater contains in a manner known per se:

- one from a pipe 2 via an actuation

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and control device 3 with fuel gas fed burner 1;

- a radiator 4 »which is above this burner and is provided with a line section 5, which is upstream with a line section fed with cold water 6 and is connected downstream with a line section 7, which runs out into a device for dispensing hot water, which has a control tap 8 and, if necessary, a pivotable one Terminating stub 9;

- A connector 10 between the section 6 and the Nozzle 9, which is controlled by a cock 11 and via the Port 9 is to dispense cold water or a mixture of two quantities of cold and warm water;

a device 12 for protection against water shortage, which is sensitive to the water circulation in the radiator;

- a framework (not shown) which supports these various elements and is attached to a wall above a sink is appropriate;

- and a covering that envelops the whole 13.

The only elements outside of the fairing 13 are the upstream ends of the feed line for the gas 2 and the cold water pipe 6, the operating buttons of the Control taps 8 and 11 for the amount of hot water or cold water and the nozzle 9 for the output of warm water.

As is well known, such an apparatus does not allow the immediate output of even a relatively small volume of boiling water, in particular as a result of the subsequent increase in temperature of the water flowing through the radiator (section 5) the time required to ignite the burner.

To enable such a removal, according to the invention, the lining 13 is enlarged, in which a small water balloon 14 with heat-protected walls is housed, which is provided with means to electrically heat its contents up to the vicinity of the boiling temperature and then constantly on the e.g. to maintain a temperature T corresponding to 95 ° C.

The balloon 14 has a relatively small volume between 1 and 15 liters, preferably between 5 and 10 liters.

It is fed with cold water through a line 15,

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which is connected to the line section 6 at a point P preferably located inside the cladding.

It is also connected by an outlet line section 16 to a device for dispensing boiling water, which has a control tap 17 with an actuating button arranged outside the cladding 13 and an optionally pivotable discharge nozzle 18 contains.

The water supply to the balloon 14 can be configured in any desired manner.

In the preferred embodiment shown, the balloon is in communication with the atmosphere via an opening 30 formed in its upper wall and is provided with a float 19 which automatically controls the degree of opening of a plug 20 which can close the downstream end of the conduit 15, whereupon the water supplied through this opening comes into a small chamber 21, which fulfills the task of a jet regulator, and from there passes through an opening 22 into the balloon.

This water supply to the balloon is automatically interrupted as soon as the free surface of the in the balloon contained water volume reaches a level N in the ascending direction, while it is restored as soon as it is free Surface falls below the N level.

According to a feature which is the subject of the

on June 28, 1976 in the name of the applicant under the number 76 19596 filed French patent application and is particularly advantageous within the scope of the present invention is the opening 22 calibrated so that the flow rate D supplied to the balloon of cold water is so small that it is during its supply to the Balloon can be brought completely from room temperature to the above temperature T, for which the entirety of the electrical heating power used for practically instantaneous heating of the small volume of additional water supplied at any given moment will.

One is so sure that the water withdrawn at the nozzle 18, regardless of the degree of filling of the balloon, at that moment this removal is always brought to the temperature T, which is close to the boiling temperature, even if the balloon is almost

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_j_ 27288SG

is empty, while in the usual systems in which the removed Water volume can be replaced immediately by new volume of cold water »the temperature of the withdrawn water in a short time Time decreases from the beginning of the withdrawal.

An overflow 23 automatically causes any drainage, if any the volume of water exceeding the level N to the discharge nozzle 18.

The heating of the water contained in the balloon 14 takes place with the help of electrical resistors 24, which from the Network are fed via a circuit 25, which if necessary with a removable plug 26 and a switch 27 is provided.

The switch 27 is controlled by a thermostat 28 which is sensitive to the temperature of the water contained in the balloon controlled so that it opens automatically when this temperature exceeds the certain value T close to 95 ° C, while in the opposite case it is closed.

The electrical heating capacity is preferably relatively high so that the volume of water contained in the balloon 14 can be quickly brought to the boil, or that, in the above preferred AusführungsabWandlung the balloon for the purpose of "instantaneous ¹¹ heating to boiling temperature supplied amount D of cold water is not too low.

As an example, it should be stated that an electrical output of the order of magnitude of 2 to 3 kW for a volume of water to be heated of the order of 7 liters seems to be indicated. Purely the above preferred embodiment from conversion corresponds to such a Performance of a quantity of water D of the order of magnitude of 0.5 liters per minute. The water heater thus completed works as follows.

Assume that the electrical circuit 25 has been connected to the network for a sufficient time so that the Balloon 14 is filled with water at a temperature T of the order of 95 ° C.

The gas-fired water heater is used in the usual way, whereby after the ignition of the (not shown) Pilot flame only the operation of the hot water tap 8 and possibly the cold water tap 11 is required.

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This use can, however, be made considerably easier and / or safer with the help of electrically operating organs will.

A major advantage of the invention is that, since the "electrical" part of the apparatus is an electrical Connection requires electricity to be available on the spot, which is generally not with gas-fired water heaters the case is.

So you can choose electrical accessories that do the job without the need for a special electrical connection of the "gas part" can improve.

This is the case of the detector for determining atmospheric contamination, which is shown schematically in the drawing shown at 29 and designed so that it automatically interrupts the supply of gas to the burner or decreases as soon as the degree of contamination exceeds a certain threshold value, with an illuminated sign being lit up if necessary will.

This would also be the case with an electric gas lighter or any other desired one that works with electricity Control or regulation system is the case.

If the user wants to take boiling water, he only needs to open the tap 17.

The boiling water available in the balloon 14 then immediately flows out through the connection 18 and can be used for all desired applications of boiling water, for example the preparation of cups of tea or coffee.

The resulting reduction in the volume of water in the balloon 14 causes the float 19 to sink, thereby releasing the plug 20 and admitting cold water into the balloon until the volume of water it contains is renewed reaches level N.

This supply of cold water reduces the mean temperature of this volume and the actuation it creates of the thermostat 28 closes the switch 27, whereby the resistors 24 are electrically fed and the temperature of the water volume Bring again to the desired value T, which is close to the boiling point. In the above preferred embodiment

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modification, the mean water temperature drops very little, since the flow rate of the new supply of cold water is so limited is that it is brought to temperature T practically immediately in its entirety.

When the level N is again reached by the free surface of the volume of water contained in the balloon, it closes the float tap 19, 20 is activated again, and as soon as the temperature of the entire water volume has again reached the value T (which in the above preferred. Embodiment practically immediately after the closing of the float tap is the case), is the apparatus ready again to dispense its entire volume of boiling water.

It is also possible to simultaneously apply the two parts "gas" and "electricity" of the above composite apparatus use, i.e. dispense warm water through the two nozzles 9 and 18 at the same time.

In this case the total instantaneous thermal power delivered by the apparatus can be and even be considerable reach or exceed that of conventional bathhouses, which is a significant advantage of the invention.

The following numerical example makes this advantage clearer.

In this example, the following assumptions are made:

The ambient temperature is 15 ° C., the volume V of the balloon 14 is 8 liters and is initially brought to 95 ° C., the acidity of the withdrawal of this water is one minute, and the "gas part" is designed so that it is per minute supplies a water volume of 3.6 liters at 50 ° C.

Under these conditions, the assembled device can deliver 765 calories in one minute, 125 for the "Gas part" and 640 for the "electrical" part. It can therefore either dispense about twelve liters of water at 80 ° C or also in one minute Provide 22 liters of water at 50 ° C if you mix a sufficient amount of cold water with the hot water dispensed through a corresponding Opening of the tap 11 mixes.

This "instantaneous" heat output, which corresponds to the first minute of the output of warm water, is therefore five times that of the simple "gas part" considered separately, ¹

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which can offer considerable advantages for a number of applications. In the borderline case, the volume V could be of the order of magnitude 10 liters and more for the balloon 14 of the above composite apparatus can even be used as a bath heater.

The structure and mode of operation of the water heater according to the invention are readily apparent from the above description.

In addition to the advantages already mentioned above (possibility of instant withdrawal of boiling water, possibility of operating the "gas part" without a special electrical connection To provide electrical accessories, considerable increase in the instantaneous total thermal output) possesses the above compound Device still has the following advantages:

- it is particularly easy to install, as it does not require more pipe connections than a conventional gas-fired water heater, since the supply of cold water is common to the two parts working with "gas" and "electricity";

- it is particularly shapely, since the only ones from the addition elements protruding outside the casing 13 from the electrical part are the actuating button of the faucet 17 and the dispensing spout 18 are for boiling water, except natural the two electrical wires of the circuit 25, which can generally be hidden behind the panel, since there is are wall-mounted units.

The invention can of course be modified. So the outlet 16 of the balloon can clip to the outlet 9 of the "gas part" connected, with the water being dispensed from the apparatus always by means of one and the same nozzle, regardless of whether cold, lukewarm, warm or boiling water is taken.

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Claims (10)

PATENT CLAIMS M.) Gas-heated water heater for sinks, which is delimited on the outside by a cladding, characterized in that it is inside the cladding (13) except for the usual Components of the gas-fired water heater (burner, radiator etc.) has a water balloon (14), which enables the rapid heating of this water to the boiling point Means assigned and on the one hand to a line (15) for feeding with cold water and on the other hand to an external output nozzle (18) is connected via a cock (17) that can be actuated from outside the cladding. 2. Water heater according to claim 1, characterized in that the two lines (6, 15) for feeding the two vessels that can be heated with gas or electricity (5 * U) des Water heater with cold water in turn from one and the same Line, which comes from outside the casing (13) and constantly (at P) to these two lines (6, 15) connected inside the fairing. 3. Water heater according to claim 1 or 2, characterized in that the balloon (H) is a relatively small, has a volume between 1 and 15 liters and preferably between 5 and 10 liters. 4. Water heater according to one of claims 1 to 3, characterized in that the electrical heating power is relatively is high and preferably of the order of 2 to 3 kW for a volume of the balloon (14) of the order of 7 liters amounts to. 5. Water heater according to one of claims 1 to 4, characterized in that with the combustion of a gas working part of the water heater is provided with at least one electrically operated accessory. 6. Water heater according to claim 5, characterized in that the electrically operated accessory is a per se known gas lighter is. 7. Water heater according to claim 5 or 6, characterized in that the electrically operated accessory is a is known per se safety organ (29), which is for a local 709881/1065 OFHGlNAL INSPECTED Lent contamination with carbon dioxide or carbonic acid gas sensitive is. 8. Water heater according to one of claims 1 to 7, characterized in that the water dispensing nozzle to which his balloon (14) is connected to that of the "ßasteils" so that This nozzle is used solely to dispense all the water in the device, regardless of whether it is cold, lukewarm, warm or boiling. 9. Water heater according to one of claims 1 to 8, characterized by means which limit the amount of cold water supplied to the balloon (14) after a withdrawal to such a value, that the entirety of this amount is heated to a temperature in the vicinity of the boiling point, depending on its supply will. 10. Water heater according to claim 9, characterized in that the means for limiting the supplied to the balloon Cold water volume can be formed through a calibrated opening (22). 709881/1065