JPS62129650A - Tap-controlled water heater with air heating function - Google Patents

Abstract

PURPOSE:To obtain not only supply of hot water but also hot air for heating in a water heater, by providing an outer casing having a space for a cooling heat exchanging passage around a flame cylinder, and by providing a hot air damper, corresponding to a hot air opening formed on the outer casing, to the cooling heat exchanging passage. CONSTITUTION:An air intake port 32 is provided to a flame cylinder 3. It can be opened and closed by an air controlling damper 30 of which damper angle is changeable. A hot-air opening 35 is provided on the side wall of the outer casing 15 of a flame cylinder 3 in the neighborhood of an air controlling damper 30, and an ON/OFF hot air damper 37 is provided to the opening 35. A louver 41 and a hot air guide plate 44 are provided to an hot-air blow-off port 39. In such a constitution with a tap-controlled water heater, combustion air is fed into the flame cylinder 3 by a fan 19 provided on the top of a flame cylinder 3. The air is fed to a burner 21 through a cooling heat exchanging passage 17. At that time the air in the cooling heat exchanging passage 17 can be blown off from the hot air blow off port 39 by opening and closing of the hot-air damper 37 for use of air heating.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an instantaneous water heater having a hot air heating function.

[Conventional technology]

BACKGROUND ART Conventionally, in instantaneous water heaters equipped with a heating function, a heat exchange coil dedicated to hot water supply or heating is buried in the can of the hot water boiler main body.

The hot water boiler body has 1 burner, 1 can, 2 channels, and 2
There is a burner, 2-can, 2-channel system. A hot water boiler like this alone does not have the ability to function as a heater;
This is the first system that can be used as a heater by connecting radiators such as panel radiators and compactors installed indoors.

In the following, [Problems to be solved by the invention] However, in order to add a heating function to such a water heater, a robust hot water supply and heating system including a radiator, etc. is required, so two basic problems are required. The basic performance of the instant water heater may be impaired. In other words, if additional functions such as a blower and a heat exchanger are added to a conventional water heater.

This results in a heating system with an extremely high initial cost.

Therefore, two objects of the present invention are to provide an instantaneous water heater having a hot water heating function and capable of providing not only hot water supply but also hot air heating with a water heater at a low cost.

[Means for solving problems]

According to the present invention, there is provided a combustion tube that defines the outer surface of the combustion chamber, a burner section that causes fuel to be combusted in the combustion chamber, a blower device that provides combustion air to the combustion chamber, and a blower that provides combustion air to the combustion chamber. In an instantaneous water heater including a water passage provided above and a heat exchanger, a combustion outer box is provided with a cooling heat exchange passage left around the combustion chamber, and a heat exchanger formed in the combustion outer box is provided. A hot air damper J corresponding to the wind window, an air suppression damper corresponding to the intake port formed in the combustion tube, and fixed to the combustion outer box.

An instantaneous water heater with a hot air heating function, characterized in that it is equipped with a warm air guide that guides warm air flowing out from the hot air window, and a louver that corresponds to the outlet of the warm air guided by the hot air guide. is obtained.

〔Example〕

FIG. 1 shows an embodiment of an instantaneous water heater according to the present invention.

The illustrated instantaneous water heater has a water heater main body 1 and a combustion tube 3 inside the water heater main body 1. An exhaust collecting pipe 7 is provided above the combustion pipe 3 via a heat exchanger 5 . The exhaust pipe 7 is connected to an exhaust connection port 9 extending from its top surface to the outside of the water heater body 1.

Further, the heat exchanger 5 is provided with a water supply pipe 11 and a hot water supply pipe 12. The water supply pipe 11 and the hot water supply pipe 12 are led out to the outside of the water heater main body 1.

On the other hand, a combustion outer box 15 is provided on the side peripheral surface of the combustion tube 3, that is, on the waist circumference.
is provided. A cooling heat exchange passage 17 is formed between the combustion tube 3 and the combustion outer box 15. A blower device 19 is provided above the cooling heat exchange passage 17 .

Incidentally, the inside of the combustion tube 3 is a combustion chamber 23 in which high-temperature gas combustion is performed by the burner section 21. An intake port 25 is formed at the bottom of the combustion tube 3. Fuel gas is supplied to the burner section 21 from the tip of a supply pipe 28 of a gas supply section 27 near the intake port 25 .

Also in combustion tube 3. On the side opposite to the intake port 25, an intake port 32 is provided which is opened and closed by an air suppression member 30 whose angle can be changed.

Furthermore, an air suppression damper 30 is provided on the side surface of the combustion outer box 15.
A warm air window 35 is formed at a position close to. Hot air window 3
5 is provided with a warm air damper 37 that can be opened and closed.

A hot air outlet 39 is provided on the side surface of the water heater body 1 at a position facing the hot air window 35. The hot air outlet 39 is provided with a louver 41 and a hot air guide plate 44.

The hot air guide plate 44 is connected to the hot air damper 37 on the side of the combustion tube 15.
The cover is also fixed at a slightly upward position and extends to the front of the hot air outlet 39.

In such an instantaneous water heater, combustion air is sent from above the combustion tube 3 by the blower device 19 .

Combustion air passes through the cooling heat exchange passage 17 to the burner section 21.
will be sent to. At this time, the air in the cooling heat exchange passage 17 can also be blown out from the hot air outlet 39 by opening and closing the hot air damper 37 .

FIG. 2 shows another embodiment. In FIG. 2, warm air damper 37 is interlocked with air suppression damper 30. In FIG. Air suppression damper 30 is supported by damper support rod 56 of solenoid 54 . Air suppression damper 30 and intake port 3
A compression spring 58 is interposed between the combustion cylinder 2 and the outer surface of the combustion cylinder 3 around the combustion cylinder 3 .

On the other hand, the hot air duct 37 is provided at the opening of the hot air window 35 via a ring-shaped sealing material 60.

The hot air damper 37 and the air suppression damper 30 are connected to a connecting rod 62.
connected by.

The solenoid 54 is energized, for example, when a hot air heating command is issued by a thermistor signal or the like. Nrenoid 54
When energized, the damper support rod 56 is pushed out. Air suppression damper 30 then compresses spring 58. At the same time, the hot air damper 32 connected by the connecting rod 62 opens. therefore.

The warm air is heated through the cooling heat exchange passage 17.

Warm air window 35. The hot air is discharged through the hot air guide 44 and the louver 41 as hot air.

When the hot air heating command is stopped, the hot air damper 37 and the air suppression damper 30 return to their original states. however.

Even when the solenoid 54 is energized, the air suppression damper 30
Due to the presence of the spring 58, the combustion air is not completely closed, and a portion of the combustion air is supplied to the burner section 21.

Moreover, FIG. 3 shows still another embodiment.

The air suppression damper 30 and the hot air damper 37 are connected to a wire 68 supported by two supports 65 and 66 such as pulleys.
are connected.

According to the Hiko air suppression damper 30 and the hot air damper 37, the hot air damper 37 is activated by the energization signal of the solenoid 54.
is opened, while the air suppression damper 30 is in a semi-closed state. Therefore, warm air is discharged from the warm air window 35 and the louver 41
It is released as hot air.

Ushi, such air suppression damper 30 and warm air damper 3
7 can be optionally and integrally controlled by one control means such as the solenoid 54.

Further, as shown in FIG. 4, the combustion signal from the water heater body 1 and the temperature signal from the thermistor 70 are mixed.

It goes without saying that the control section 72 can also control the solenoid 54-1 of the hot air damper 37 and the solenoid 54-2 of the air suppression damper 30.

If you install the above-mentioned instantaneous water heater in a bathroom or dressing room, you can heat the dressing room with hot air or the bathroom at the same time as hot water for the bath, so you can bathe with peace of mind even on cold days. It becomes like this. Furthermore, since warm air is dry air that does not contain water vapor, it can also be used as a simple dryer.

〔Effect of the invention〕

As explained above, according to the instantaneous water heater having the hot air heating function according to the present invention, the heating efficiency can be improved as compared to the conventional one.

Hot air heating can be performed at the same time as the original hot water heating function without using a large-scale hot water heating system. Moreover.

This is because there is no need to use special functional parts such as air blowers, heat exchangers, etc. exclusively for heating.

It saves time and space, and has great economic benefits.

It also has advantages as a utility product.

[Brief explanation of drawings]

Fig. 1 is a schematic side sectional view showing one embodiment of an instantaneous water heater having a hot air heating function according to the present invention, Fig. 2 is an enlarged view of the main part of another embodiment, and Fig. 3 is a further example of another embodiment. FIG. 4, which is an enlarged view of the main part of the embodiment, is a diagram showing an example of a control circuit. 1; Water heater body, 3; Combustion tube, 5; Heat exchanger. 15: Combustion outer box, 17: Cooling heat exchange passage, 21: Burner section, 23: Combustion chamber, 30: Air suppression dumpster. 35; warm air window; 37; warm air damper; 39; warm air outlet;
54; solenoid, 62; connecting rod, 70; thermistor.

Claims (1)

[Scope of Claims] 1) A combustion tube that defines the outer surface of a combustion chamber, a burner section that burns fuel in the combustion chamber, a blower device that provides combustion air to the combustion chamber, and a combustion chamber that provides combustion air for combustion. In an instantaneous water heater including a heat exchanger provided above the chamber and serving as a water passage, a combustion outer box provided with a cooling heat exchange passage left around the combustion chamber, and a combustion outer box formed in the combustion outer box. a hot air damper corresponding to the hot air window; an air suppression damper corresponding to the intake port formed in the combustion tube; a hot air guide fixed to the combustion outer box and guiding warm air flowing out from the hot air window; An instantaneous water heater having a warm air heating function characterized by being equipped with a louver corresponding to the outlet of warm air guided by a wind guide. 2) The instantaneous water heater having a hot air heating function according to claim 1, wherein the hot air damper and the air suppression damper are interlocked with each other.