JP2640876B2 - Bath kettle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub with improved thermal efficiency.

[0002]

2. Description of the Related Art Generally, this type of bath kettle is configured such that the periphery of a combustion chamber provided outside a bathtub is covered with a heat absorbing cylinder so that heat in the combustion chamber can be transmitted to water in the bathtub. That is,
The heat-absorbing cylinder is provided with a flow path for circulating the water in the bathtub in its wall surface, so that the heat in the combustion chamber is transferred from the surface of the heat-absorbing cylinder to the internal water, and then the water in the bathtub can be heated by convection. It has become. A burner is installed at the center of the combustion chamber to generate heat by burning gas, oil, and the like for a predetermined time. And it is comprised so that the water in a bathtub may be boiled through the heat absorption cylinder which absorbs this heat.

[0003]

The above conventional bath kettle is
If the heat exchange efficiency between the combustion chamber and the heat absorbing cylinder is high, the hot water in the bathtub can be boiled faster and with less energy. However, in the conventional bath kettle, the temperature of the exhaust gas rising in the flue from the upper portion of the combustion chamber is extremely high, sometimes reaching around 500 ° C. This means that the heat of the exhaust stream is wasted.

[0004] In view of the above, an object of the present invention is to provide a high-efficiency bath kettle capable of effectively utilizing the heat of exhaust gas.

[0005]

In order to achieve the above-mentioned object, a bath kettle according to the present invention comprises a combustion chamber, a main heat-absorbing cylinder that covers the periphery of the combustion chamber, and a bent exhaust gas flow from the combustion chamber. A stack having alternately narrowed and enlarged sections as if abacus balls were stacked, a sub-endothermic cylinder provided along the stack, and a vertical rise of exhaust gas at each enlarged section of the stack. Fins are provided, and each fin has a hollow abacus ball shape in accordance with the shape of the enlarged portion of the flue, and each fin and each fin communicates with the main and sub heat absorbing cylinders. , So that the heat of the exhaust gas can be absorbed as much as possible.

According to the present invention, the flue is characterized in that the shape of the flue has a narrowed portion and an enlarged portion like an abacus ball, and a smooth flow is created while preventing a vertical rise of the exhaust flow. Thus, the efficiency of heat transfer from the flue to the auxiliary heat absorbing cylinder can be improved.

In particular, according to the present invention, the fins communicate with each other and the fins with the main and sub heat absorbing cylinders, and the water warmed in the main heat absorbing cylinder rises in the sub heat absorbing cylinder and also inside the fins one after another. As a result, heat is transferred to the uppermost layer of the sub heat absorbing cylinder so that heat transfer to the sub heat absorbing cylinder and heat transfer in the flue can be further improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the accompanying drawings. FIG. 1 is a cross-sectional view showing the overall configuration of a bath kettle of the present application, and FIG. 2 is a principle configuration diagram showing a relationship between a bathtub and a bath kettle.

In the figure, reference numeral 1 denotes a bath kettle main body.
Is installed outside the bathtub 10, and the water in the bathtub 10 flows into the bathtub body 1 from the communication pipe 2a, and is heated to a predetermined temperature, and then returned to the bathtub 10 from the communication pipe 2b. ing. 3 is a combustion chamber of the bath kettle body 1 and 4 is a combustion chamber 3
The main heat-absorbing cylinder 5 that covers the periphery of the sub-heat-absorbing cylinder 5 is a sub-heat-absorbing cylinder provided in a stack along the flue 6 that bends and raises the exhaust flow from the combustion chamber 3. When the sub heat absorbing cylinder 5 is stacked in multiple stages, it may be higher than the upper edge of the bathtub 10, but in this case, the communication pipes 2a,
A circulation pump may be provided at an appropriate position of 2b so as to be able to forcibly reflux.

A burner B is provided at the center of the combustion chamber 3 so as to generate heat by burning gas or oil. The heat generated in the combustion chamber 3 is absorbed by the main heat absorbing cylinder 4 and heats water introduced from the bathtub 10. The warmed water is further heated by receiving heat from the flue while ascending along the flue 6 in the sub-endothermic cylinder, and is returned into the bathtub 10 from the top layer via the communication pipe 2b.

The flue 6 is provided with alternately narrowed portions 6a and enlarged portions 6b like stacked abacus balls, and the enlarged portions 6b are provided with fins F for preventing the exhaust gas from vertically rising. In the sub heat absorbing cylinder 5, a narrow portion 6a and an enlarged portion 6b of the flue 6 are provided.
A baffle plate 5a is provided so that warmed water can flow along. The fins F are desirably configured as a water-flowing type that communicates with the sub heat absorbing cylinder 5 from the viewpoint of improving thermal efficiency. In addition, the outer diameter shape from the upper direction of the flue 6 may be arbitrary such as circular or rectangular. Here, it is desirable that the water passing (supporting) position between the fin F and the sub heat absorbing cylinder 5 is three circular and four rectangular.

The fin F is hollowed out, and the fin F
The fins F and the main and sub heat absorbing cylinders 4 and 5 communicate with each other via the conduction paths 7 and 8 so that water can move with each other. That is, the water warmed in the main heat absorbing cylinder 4 rises in the sub heat absorbing cylinder 5 and also rises one after another in the fins F to join at the uppermost layer of the sub heat absorbing cylinder 5.

The main heat absorbing cylinder 4 and the sub heat absorbing cylinder 5 are made of a metal having good thermal conductivity (eg, copper or stainless steel).
When the inside becomes a water passage, it may be made of a copper plate or stainless steel, but is usually made of a heat-resistant material.

Reference numeral 9 denotes a chimney provided on the upper surface of the auxiliary heat absorbing cylinder 5 so as to communicate with the flue 6. Reference numeral 11 denotes the periphery of the bathtub main body 1 and the communication pipe 2.
a, heat-resistant insulation covering the periphery of 2b, 12 is a base, 1
2 is a main part of the burner B, and 14 is a wall of a house.

In the above embodiment, the water in the bathtub 10 flows into the wall of the main heat-absorbing cylinder 4 from the communication pipe 2a, and then flows into the sub-heat-absorbing cylinder 5 (or the wall of the fin F). It is returned into the bathtub 10 through the tub. During this time, the combustion heat of the burner B in the combustion chamber 3 is transmitted to the water in the wall of the main heat absorbing cylinder 4, and the heat of the exhaust gas flowing up the flue 6 is transmitted to the water in the wall of the sub heat absorbing cylinder 5. For this reason, the low-temperature water (for example, 20 ° C.) that has flowed into the communication pipe 2a is higher than the high-temperature water (for example, 60 to 9) from the communication pipe 2b.
(0 ° C.). As a result, the thermal power of the burner B, the number of stages of the auxiliary heat absorbing cylinder 5, and the circulation pump are appropriately adjusted, and the temperature of 150 liters of water in the bathtub 10 can be raised from 20 ° C. to 42, 3 ° C. within 5 minutes. It becomes possible.

[0016]

As described above, the bath kettle of the present invention has a combustion chamber, a main heat absorbing cylinder covering the periphery of the combustion chamber, and an abacus ball for bending and rising the exhaust flow from the combustion chamber. A flue having alternately constricted portions and enlarged portions, a sub-endothermic cylinder provided along the flue, and fins that obstruct the vertical rise of the exhaust flow at each enlarged portion of the flue. The fins have a hollow abacus ball shape in accordance with the shape of the enlarged portion of the flue, and each fin and each fin communicates with the main and sub heat absorbing cylinders. The thermal contact time and area of the cylinder are dramatically increased, and the heat of the exhaust gas can be absorbed to the maximum. In particular, by appropriately adjusting the height of the main and sub heat absorbing cylinders and the strength of the burners, it becomes possible to make the thermal efficiency close to 100%.

In addition, according to the present invention, the flue has a narrowed portion and an enlarged portion as if the abacus balls are stacked, and a smooth flow can be created while preventing a vertical rise of the exhaust flow. There is an advantage that the efficiency of heat transfer from the heat sink to the auxiliary heat absorbing cylinder can be improved.

In particular, according to the present invention, the fins communicate with each other, the fins and the main and sub heat absorbing cylinders, and the water warmed in the main heat absorbing cylinder rises in the sub heat absorbing cylinder and also moves inside the fins. As it rises one after another and merges at the top layer of the sub heat absorbing cylinder, it is possible to effectively use almost all of the heat of the exhaust gas, and it has a remarkably high thermal efficiency, and it can provide a bath kettle that boils quickly. It has the effect that it has.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the overall configuration of a bath kettle of the present application.

FIG. 2 is a principle configuration diagram showing a relationship between a bathtub and a bath kettle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bath body 2a Communication pipe 2b Communication pipe 3 Combustion chamber 4 Main heat absorption cylinder 5 Sub heat absorption cylinder 5a Baffle 6 Flue 6a Narrowed part 6b Enlarged part 7, 8 Conducting part 10 Bathtub B Burner F fin

Claims (1)

(57) [Claims] 1. A combustion chamber, a main heat-absorbing cylinder covering the periphery of the combustion chamber, and a calculator for bending and rising an exhaust flow from the combustion chamber.
Flue with alternating stenosis and enlargement like a stack of balls
A sub-endothermic cylinder provided along the flue;
Most have fins that prevent the vertical rise of exhaust flow,
Each fin is hollow according to the shape of the enlarged part of the flue.
In addition to the abacus ball shape, each fin and each
A bath kettle characterized in that the main body and the auxiliary heat absorbing cylinder communicate with each other.