JPS5915757A - Water heating boiler - Google Patents

Abstract

PURPOSE:To increase the coefficient of heat transfer without increasing the resistance of gas flow unnecessarily, by employing such an arrangement that inside baffles for guiding combustion gas to flow at the central portion of a flue are held in contact with the inner wall surface of the body of a water heating boiler at their peripheral portion. CONSTITUTION:An inside baffle 13 having a substantially V-shaped cross section at its peripheral portion, which is located above an outside baffle 12 and formed with an opening 14 at its central portion, is held in contact with the inner wall surface of the main body 1 of a water heating boiler. Therefore, combustion gas passed through the space formed between the outside baffle 12 and the inner wall surface of the main body 1 heats the inside baffle 13, and after passing through the opening 14 of the inside baffle 13, flows along the outer circumference of the outside baffle 13 located above the inside baffle 13. Since the swirl of combustion gas is produced at U-shaped sections 19, heat possessed by the combustion gas can be transmitted more efficiently to the inner wall of the main body 1 via the inside baffles 13.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot water boiler used for water heaters, hot water supply and heating devices, and the like.

114 structure of the conventional example and its problems As shown in Fig. 1, the conventional hot water boiler has a vaporizing tube 3. A burner section 6 composed of an auxiliary combustion cylinder 4 and a burner ring 6 is provided. 7 is a nozzle that injects fuel into the vaporization cylinder 3, 8 is an ignition electrode, and 9 is a blower that supplies all the combustion air into the vaporization cylinder 3 through an air passage 10.

Reference numeral 11 denotes an ice chamber located outside the flue 2 and provided inside the main body 1. 12. 13 is an outer baffle and an inner baffle that meander the combustion gas alternately with the peripheral wall of the flue 2 and the central part 1 peripheral wall, and the outer baffle 12 has a closed central part of the flue 2, so the flue 2 Since the inner baffle 13 has an opening 14 in the center of the flue 2, all of the combustion gas passes through the opening 14. 15 is flue 2
16 is a support for holding the outer baffle 12 degrees, the inner baffle 13, and the entire top plate 15.

17 is a water supply pipe provided at the bottom of the main body 1, and 18 is a hot water supply pipe provided at the top of the main body 1.

In a hot water boiler having such a configuration, high-temperature combustion gas generated in the burner section 6 is moved through the flue 2 by the action of the outer baffle 12 and the inner baffle 13. Part 9 Water chamber 11 meandering with the surrounding wall
In order to increase the heat exchange efficiency and increase the residence time of the combustion gas in the flue 2, the inner bar becomes larger, so the blower 9
However, it also required a large size, which resulted in increased noise.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to provide a hot water boiler with excellent heat exchange efficiency without increasing the ventilation resistance of combustion gas more than necessary.

Structure of the Invention In order to achieve all of the above objects, the hot water boiler of the present invention has a flue provided in the main body with all baffles, so that the combustion gas meanderes alternately through the peripheral wall of the flue and one peripheral wall in the center. The entire outer periphery of the inner baffle that regulates the flow of combustion gas through the center of the exchanger is in contact with the inner wall of the main body, allowing all of the heat in the combustion gas to be transferred from the inner baffle to the inner wall of the main body. By creating a vortex flow of combustion gas on the inner wall of the main body on the upper surface of the inner baffle, the heat in the combustion gas is further efficiently transferred to the inner wall of the main body, and a hot water boiler with excellent heat exchange efficiency can be obtained.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

In FIG. 2, reference numeral 1 denotes the main body of the hot water boiler, and a flue 2 provided in the main body 1 has a vaporizing pipe 3, an auxiliary combustion pipe 4, and a lower part thereof.
A burner section 6 constituted by a burner/rig 5 is provided. 7 is a nozzle that injects all the fuel into the carburetor cylinder 3;
8 is an ignition electrode that ignites the fuel; 9 is a blower that supplies all the combustion air into the vaporization cylinder 3 through an air passage 10'(H); 11
is an ice chamber located outside the flue 2 and provided inside the main body 1.

12.13 directs the combustion gas to the peripheral wall and center of flue 2.

The outer baffle and the inner rosette 6 are full, meandering alternately with the surrounding wall. Since the center of the flue is closed in this outer baffle 12, all the combustion gases pass through the peripheral wall. Further, as shown in FIG. 3, the inner baffle 13 has an opening 14 in its center, has a substantially U-shaped cross section at its outer periphery to provide elasticity, and is provided in contact with the inner wall of the main body 1. . 15
16 is a top plate that narrows down the entire upper part of the flue 2 to a small diameter, and 16 is a support that connects the outer baffle 12 and the inner baffle 13 to the top plate 16. 17 is a water supply pipe provided at the bottom of the main body 1, and 18 is a hot water supply pipe provided at the top of the main body 1.

The operation of the above configuration will be explained below.

The high-temperature combustion gas generated by combustion in the burner section 6 flows through the flue 2 through the action of the outer baffle 12 and the inner baffle 13.
It snakes around the circumferential wall of the flue 2 and the circumferential wall of the central part 1, exchanges heat with water in the water chamber 11 inside the main body 1, and is discharged from the upper part of the main body 1. Since the outer baffle 12 provided in the flue 2 is closed at the center, the combustion gas flowing in the flue 2 heats the inner wall of the main body 1 when it passes through the entire outer circumference of the outer baffle 12.

It has an opening 14 in the center located above the outer bakful 12 with 6 pages.
an inner baffle 13 having a substantially U-shaped outer peripheral cross section;
is in contact with the inner wall of the main body 1, so the outer baffle 1
The combustion gas that has completely passed between the inner wall of the main body 1 and the inner wall of the main body 1 heats the inner baffle 13, passes through the opening 14 of the inner baffle 13, and then reaches the outer baffle 12 provided above the inner baffle 13.
flows along the outer periphery of the Since the entire outer periphery cross section of the inner baffle 13 is configured in a substantially U-shape, when the combustion gas flows along the outer periphery of the outer baffle 12 via the opening 14 of the inner baffle 13, the U-shaped portion 19 A vortex is generated, which can further heat the inner backflush 13 and transmit it to the inner wall of the main body 1.

As described above, according to the hot water boiler of this embodiment, the combustion gas generated by combustion in the burner section 6 in the main body 1 is removed by the outer buckle 12 provided in the flue 2 and the opening 14 in the center. When the water in the water chamber 11 in the main body 1 is heated by the action of the inner baffle 13 whose outer peripheral cross section is approximately U-shaped, the inner baffle By bringing the outer periphery of the baffle 7 basing 13 into contact with the inner wall of the main body 1, the heat of the inner baffle 13 heated by the combustion gas is transmitted to the entire inner wall of the main body 1, that is, the water chamber 11, and the water can be efficiently heated. can.

Furthermore, by configuring the outer peripheral cross section of the inner baffle 13 in a substantially U-shape, the combustion gas flowing in the flue 2 generates a vortex flow in the U-shaped portion 19, so that heat in the combustion gas is transferred to the inner baffle 13. By heating, the inner wall of the main body 1 can be heated with a total efficiency of 3[<<. In addition, in order to increase the residence time of combustion gas in the flue 2 and increase heat exchange efficiency, the inner baffle 1
Air blower 90 generated by reducing the opening area of 3
It has the effect of completely preventing dog-shaped formation and the resulting increase in noise.

Effects of the Invention As described above, according to the hot water boiler of the present invention, by bringing the outer periphery of the inner baffle into contact with the inner wall of the main body, the ventilation resistance of the combustion gas flowing in the flue can be reduced without making the flue thicker than necessary. Moreover, the effect is obtained that all of the heat in the combustion gas can be transferred from the inner baffle to the inner wall of the main body.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of a hot water boiler showing a conventional example, Fig. 2 is a side sectional view of a hot water boiler which is an embodiment of the present invention, and Fig. 3 is an enlarged sectional view showing all the main parts of Fig. 2. It is. 1... Body, 2... Flue, 12. River.
-Outer baffle, 13...Inner baffle. Name of agent: Patent attorney Toshio Nakao Haga 1st person
III 211A 5

Claims (2)

[Claims] (1) A baffle is provided in the flue inside the main body, and the combustion gas is meandered alternately through the peripheral wall of the flue and the central nine peripheral walls to exchange heat with the ice chamber provided outside the flue, and combustion The hot water boiler is configured such that the entire outer periphery of an inner panful that regulates the flow of gas through the center of the flue comes into contact with the inner wall of the main body. (2) The hot water boiler according to claim 1, wherein the outer circumference of the inner baffle is formed into a substantially U-shape to provide elasticity and absorb all expansion and contraction in the radial direction.