JPS5869347A - Vertical type boiler - Google Patents

Abstract

PURPOSE:To prevent the overheating of smoke ducts simply and accurately by a method wherein passages through which a liquid heat medium in a liquid reservoir is sucked up are provided around the smoke ducts extending vertically from a combustion chamber and passing through a steam chamber and the liquid heat medium is drawn up due to air bubbles generating in the liquid pooling section. CONSTITUTION:The combustion chamber 2 of a burner B is provided at the liquid reservoir 1A of a vessel 1 and a heat exchanger 3 is provided spirally within the upper steam chamber 1B. Further, a group of smoke ducts 4 are arranged vertically above the combustion chamber so as to pass through the steam chamber 1B. Each of the smoke ducts 4 is covered with a pipe 5 whose lower end is immersed into the liquid heat medium in the liquid pooling section 1A and whose upper end reaches the inner surface of the ceiling of the sealed vessel 1 so that the passage 6 through which the liquid heat medium is drawn up is formed between each of the smoke ducts 4 and the pipe 5 covering the former. In addition, an air bubble guide 7 for gathering the air bubbles generating in the liquid reservoir 1A due to the heating of the liquid heat medium is provided at the inlet port in the lower end of the passage 6 whereby the liquid heat medium is drawn up through the passage 6 due to the force of buoyancy of the air bubbles to thereby cool the smoke ducts 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an O-boiler that heats water for hot water supply, etc., and more specifically, a heating medium liquid is sealed in a sealed container of 1 yen of liquid 111 %.
In addition to fully inserting the combustion chamber that heats and evaporates the heat transfer liquid, the steam generated in the steam chamber in the front sealed container is heated to
An exchanger for heating the fluid is provided, and a smoke pipe is directed upward from the combustion chamber. , relates to a vertical boiler installed vertically in a corridor penetrating a steam room.

The vertical type boiler with the above structure is designed to make the entire device more compact and compact by installing the smoke pipe vertically in the shape of a pipe 11 penetrating the steam chamber.
Because the smoke pipe is passed through the steam chamber where the temperature becomes high, heat dissipation from the smoke pipe is poor, easily causing overheating, promoting oxidation of the smoke pipe, and reducing its durability.
However, in conventional boilers that have solved this problem, the pipes are heated by increasing the heat transfer rate of the liquid by capillary action, which causes a capillary phenomenon in the outer layer of the pipe.
The silver tube is cooled by a heat medium by pumping up 10-wave droplets of liquid with a bong or the like and letting it flow from the upper part of the tube along the outer surface of the tube. There are nine types of cooling, or a combination of both of the above.

In any of these conventional boilers, the smoke tubes are cooled by using the heat medium liquid sealed in the boiler itself as a coolant, so the smoke tube overheat prevention is achieved by recovering exhaust heat from the exhaust gas, which improves thermal efficiency. When using a boiler, the height of rise of the heating medium due to capillary action is low, and the amount of rising heating medium is also small, so in principle overheating of the smoke tube can be prevented, but it is not practical, and Said @・
When using an O boiler, boil wood such as a pump 4
1I and external equipment were required, which not only increased costs, but also caused inconveniences in terms of management, as the pump had to be monitored at all times to prevent overheating of the smoke pipe.

In view of the above points, the present invention adopts a structure that is advantageous for compactness, miniaturization, and miniaturization, and improves the IIIJ rate by recovering exhaust heat from overheating of the smoke pipe. The purpose is to try to prevent this, reliably and physically.

In the vertical boiler according to the present invention of Wε, the heating medium liquid in the me liquid reservoir is placed around #1 of the smoke pipe nIi! , f
In addition to providing a pumping liquid passage along the outside of the I11 surface to near the top of the closed container, a bubble guide is provided to collect air bubbles generated within the liquid pumping liquid at the lower end entrance of the pumping liquid passage. It is characterized by the fact that it is a set-up.

That is, by the buoyancy of steam bubbles that are inevitably generated as the boiler operates, the heat medium liquid in the liquid reservoir is lifted along the outside R surface of the smoke pipe, and the heat medium liquid cools the smoke pipe. By providing a bubble guide, the pumping action of the heat medium liquid is strong and reliable, so that the necessary and sufficient amount of heat medium liquid can be reliably delivered to the outer circumferential surface of the layer pipe without using a pump or the like. It can be transported along.

Therefore, we have adopted a configuration that is advantageous for compactness and miniaturization, in which the smoke pipe is installed suddenly through the steam chamber, and is inexpensive and uses a rational method that does not require special management to improve thermal efficiency by recovering waste heat. We have successfully succeeded in preventing the smoke pipe from overheating.

Hereinafter, the F1 embodiment of the present invention will be described based on the drawings.
A vertically long sealed container +11 holding VCfl is provided, and the 1ilJl (2A
) is used as a heat transfer surface to add and evaporate sealed heat medium water (
6) while inserting the combustion chamber (21) into the airtight chamber @
(Heat exchanger (3) in the upper S steam room (IB) in 11 that heats the fluid to be heated (hot water, etc.) using generated steam
is pressed into a spirally wound state along the turn lII of the airtight container (1), and IIt1f! .

Directing upward from the combustion chamber (!
In a vertical boiler that is installed vertically to penetrate the steam room (IB), the pipe 161 is connected to the smoke pipe (4).
- Its lower end is immersed in the heat medium liquid level in the liquid 11fil (IA), and its upper end is a sealed container! i (1), and put it in a closed container (1), and put 11 fil (IA) of the heat transfer liquid along the outer circumferential surface around each smoke pipe (4ζ). 1) Construct a pumping passage t61 which can pump the liquid up to near the upper end K, and transfer vapor bubbles generated in the liquid S section (IA) as the distribution medium liquid heats up to the pumping passage 1. @)...The bubble guide (γ) to be collected at the lower end inlet of O is placed in the lower part that divides the front ε liquid reservoir II (IA) into two upper F parts, and 11 times, 2 parts of the generated 9 bubbles are lifted up. Conveyance path 1, 1...In addition to providing it in a shape that gathers at the lower end inlet, I11ε air 1 guide (1: Directs the upper molten liquid to liquid fm
Part (IA) The bottom part (IA)
) in vcl: get.

The part above (in the figure) is the chimney.・Upper structure! According to , the buoyant force of the generated bubbles is set as the lifting force, and the heat medium in the droplet @(IA) moves upward along the pumping liquid path along with the generated collective bubbles. , the smoking pipe during its upward movement! 4]...The smoke pipe 14)... is cooled by contact with the outside Ws1. In other words, the exhaust gas I& is added by fIk8. IIi Queen Lifting Passage 11) 41・
The bubbles that have moved up to the upper end enter the steam chamber (IB), give heat to the fluid to be heated, and undergo heat exchange. Add a drop of F to On the other hand, the liquid passageway (411... listed) has overflowed and the liquid m
The heat transfer liquid that has returned to the upper part of the bubble guide (11) in the liquid reservoir part (IA) passes through the passage lance into the closed container 11.
) is led to the bottom and reheated.

Figure 8 shows another embodiment in which five cylindrical bodies (5 cylinders) are fitted into the entire group of smoke tubes (4) to form a liquid pumping passage (.) around the group of smoke tubes (4).

In addition, it may be implemented by providing a throttle in the F descending passage 181.

[Brief explanation of drawings]

The drawings illustrate one embodiment of the vertical boiler according to the present invention,
Figure 1 is a longitudinal cross-sectional view, and Figure 8 is the u −n *t in Figure 1.
ri#J and FIG. 8 are cross-sectional plan views showing another embodiment. (1)・・・Airtight container, (IA)・・・g
Reservoir, (!shi... Combustion chamber, (IB)... Steam chamber, (3)... Heat exchanger, (4)...
Smoke pipe, 16)... Lifting passage, (γ)...
・Bubble guide. Agent Patent Attorney Osamu Kitamura\Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] O liquid reservoir part (IA
) is inserted with a combustion chamber (I) that heats the heat transfer liquid and generates heat, and a heat exchanger that heats the fluid to be heated with the generated steam is installed in the Renhi closed vessel (1) circular steam chamber (IB). !!i
In the gk type boiler i, which is installed vertically to pass through the #ε combustion chamber (from the phantom upward, the smoke pipe 14J is passed through the #e steam chamber CIB), [IW(4)
O11ml! IK, #liquid distribution 8gCIA) Inside (Da heat transfer a period smoker pipe (4) If! outside along the surface of airtight container (1
A bubble guide 111 is provided to collect the air bubbles generated in the aaεfiL trapping part (IA) circle at the end entrance sK of the key pumping liquid passage 1. A vertical boiler characterized by the fact that it is