JPS5813238Y2 - Open fire water heater - Google Patents

Description

[Detailed explanation of the invention] This invention efficiently absorbs the heat of the combustion flames in the field soil into cold water, which makes it possible to quickly obtain hot water. Concerning a direct flame water heater that can be maintained to eliminate any danger to workers.

First, the present applicant has three-dimensionally provided an endothermic chamber filled with an endothermic material in the upper stage, a combustion chamber surrounding a water tank in the middle stage, and a hot water storage tank in the lower stage in the main body. As the sprayed cold water sequentially flows down through the heat absorption chamber and the combustion chamber, it comes into direct contact with the combustion flame, while a portion of the cold water that flows from the heat absorption chamber into the water tank is heated by the indirect heating effect of the combustion flame. We developed a direct-fired water heater that quickly produced high-temperature hot water, and as it has been put into practice, it has shown considerable effectiveness.

By the way, all of the water tanks of the direct-fired water heaters that we developed earlier have an inlet only at the top end, so after the tank becomes full with cold water, In this case, the cold water that continuously tried to flow into the water tank was not stored in the tank but quickly overflowed from the inlet, and during the overflow process, the green liquor was heated by the combustion flames. A temperature increase is achieved.

As a result, the cold water that overflows from the water storage tank has a short direct contact time with the combustion flames, so it falls into the storage tank without being heated to a high temperature, which causes the water temperature in the tank to drop. The cold water previously stored in the tank is gradually heated up by the indirect heating effect from the combustion flames, causing not only the surrounding surface of the water tank but also the entire surface of the main body to become hot due to heat transfer, posing a danger to workers. It is something that causes defects to occur.

In view of the above, in the present invention, a partition wall is provided in the water storage tank to form two chambers, an injection side water storage chamber and a discharge side water storage chamber, which communicate at the bottom, and the inlet of the injection side water storage chamber is connected to the discharge side water storage chamber. The cold water injected into the water storage tank from the heat absorption chamber through the inlet is placed above the outlet of the chamber, and does not necessarily stagnate, but after descending in the water storage chamber on the injection side, flows upward in the water storage chamber on the discharge side. In this way, the flowing cold water is raised to a high temperature by effectively using the indirect heating effect of the combustion flame, and the flowing cold water in the water storage tank lowers the surface temperature of the combustion chamber as well as the surface of the main body. The present invention is intended to provide a direct-fired water heater that can be maintained and thereby eliminate any danger to workers during hot water work. Let's discuss an example.

Reference numeral 1 denotes a direct-fired water heater, and the direct-fired water heater 1 has a main body 2 having an arbitrary cross-sectional shape, and a porous partition 3 placed in the upper position of the main body 2 to form an endothermic chamber 4. Annular partition walls 5 are erected at appropriate intervals on the inner peripheral surface of the middle main body 2, which is the lower part of the main body, to form a water tank 6 on the inner peripheral surface of the main body, and the inside of the water tank 6 is used as a combustion chamber 7. shall be.

At the lower stage of the main body 2, which is further below the combustion chamber 7, there is provided a hot water storage tank 8 which is blocked by a funnel-shaped partition wall, and a hot water discharge pipe 9 is connected to the end position of the hot water storage tank 8. ing.

The above-mentioned heat-absorbing chamber 4 is filled with heat-absorbing material 10 of arbitrary shape made of a suitable heat-absorbing material in multiple stages, and above the heat-absorbing material 10 is a water shower attached to the tip of the water supply pipe 11. Position 12.

A partition wall 13 is disposed inside the annular water storage tank 6, and an injection side water storage chamber 14 and a discharge side water storage chamber 1 are connected to each other at the lower part.
The main body 2 is divided into two chambers 5 and 5, and the partition wall 13 is set higher than the partition wall 5, and the main body 2 is placed at the upper end of the water storage chamber 14 on the injection side.
An injection port 16 formed by the partition wall 13 and the partition wall 13 is provided.

Further, a discharge port 17 is provided at the upper end of the discharge side water storage chamber 15 formed by the partition wall 13 and the partition wall 5.

Therefore, with the above configuration, the injection port 16 is opened higher than the discharge port 17.

The injection side water storage chamber 14 and the discharge side water storage chamber 15 are located at the bottom.

1 and 2, the partition wall 13 is fixed with a suitable fixing member so that an annular communication portion 18 is formed between the partition wall 13 and the bottom of the water tank 6. 19 in the water storage tank 6 or on the partition wall 1
Concave and convex portions 20a and 20b are continuously provided at the lower end of the partition wall 13 to form a communicating portion 18 between the concave portion 20a and the bottom wall of the water tank 6 (Fig. 3). A conceivable configuration is to provide a communication hole and use this communication hole as the communication portion 18 (FIG. 4).

A combustion device 20 is inserted and supported on one side of the combustion chamber 7.

Next, the operation of the present invention will be explained.

Now, in FIG. 1, if the combustion device 20 is started and a combustion flame is ejected into the combustion chamber 7, the combustion flame will heat the entire water storage tank 6 provided on the inner periphery of the combustion chamber 7 and The heat absorbing material 10 enters the heat absorbing chamber 4 through the partition 3 and is further filled with the heat absorbing material 10.
The flame is emitted to the main body 2Iy + part of the main body 2Iy through the gap.

Then, in the process of the combustion flame circulating between the heat absorbing materials 10, the heat absorbing materials 1
0 intensely heated.

On the other hand, at the same time as the combustion device 20 is started, the shower 1 sprinkles cold water.
Water is evenly sprinkled onto the heat absorbing material 10 filled through the tube 2.

As the sprayed cold water sequentially flows down the heat-absorbing material 10, it comes into direct contact with the combustion flames on the field soil and is directly heated, as well as being indirectly heated by the heat-absorbing material 10 itself, rapidly increasing the temperature. The hot water flows from the heat absorption chamber 4 through the combustion chamber 7 and into the lower hot water storage tank 8.

By the way, when high-temperature hot water falls from the heat absorption chamber 4 into the hot water storage tank 8, the hot water comes into direct contact again with the combustion flames in the field soil and is directly heated. The hot water reaches a completely high temperature and is supplied to an appropriate location from the hot water discharge pipe 9.

On the other hand, a part of the cold water sprayed onto the heat absorbing material 10 via the sprinkler shower 12 is continuously injected into the injection side water storage tank 14 from the heat absorption chamber 4 through the injection port 16 provided on the outside of the water storage tank 6. At the same time, this cold water sequentially descends in the injection side water storage tank 14, passes through the communication part 18 provided at the lower part, rises in the inner discharge side water storage tank 15, and is discharged from the discharge port 17 into the combustion chamber 7. During the distribution process, the cold water quickly turns into hot water due to the indirect heating of the combustion flame, and the discharge port 1
The hot water discharged from the combustion chamber 7 comes into direct contact with the combustion flames, becomes high-temperature hot water, and then falls into the hot water storage tank 8.

As a result, the cold water flows continuously through the injection side water storage tank 14 and the discharge side water storage tank 15 without being stagnated, so that heat exchange is performed well, promoting the increase in the temperature of the cold water, and at the same time keeping the surface of the main body 2 at a low temperature. It can be maintained to eliminate all dangers during hot water work.

In short, the present invention sequentially three-dimensionally provides a heat absorption chamber 4 filled with heat absorption material 10 in the upper stage, a combustion chamber 7 surrounding a water storage tank 6 in the middle stage, and a hot water storage tank 8 in the lower stage in the main body 2. Even if the hot water is quickly made into high temperature water by the direct heating action and indirect heating action with the combustion flame in the field soil during the flowing process, a partition wall 13 is provided in the water storage tank 6 and a communication 18 is provided at the bottom.
The injection side water storage chamber 14 and the discharge side water storage chamber 15 are formed into two chambers, and the inlet 16 of the injection side water storage chamber 14 is located at -L position than the discharge port 17 of the discharge side water storage chamber 15, so that heat absorption is prevented. The cold water injected from the chamber 4 into the injection side water storage tank 14 via the injection port 16 descends without stagnation and flows into the lower communication section 1.
To efficiently raise the temperature of cold water by the indirect heating action of combustion flames by surely performing a flow action in which cold water enters a discharge side water storage tank 15 from 8, rises, and is discharged from a discharge port 17 into a combustion chamber 7. Of course, the cold water that has fallen into the water storage tank 6 is smoothly heated to a high temperature without being stagnant, and is sequentially discharged from the discharge port 17. This has the effect of maintaining the temperature at a low temperature and eliminating any danger to workers.

[Brief explanation of the drawing]

The drawings show an embodiment of the direct-fired water heater according to the present invention, in which Fig. 1 is a partially cutaway longitudinal sectional front view, and Fig. 2 is a partially cutaway enlarged front sectional view showing the operating state. , 3 and 4 are partially cutaway front views showing the other side of the partition wall. 1...Direct fire type water heater, 2...Main unit, 4
... Endothermic chamber, 6 ... Water tank, 7 ...
...Combustion chamber, 8...Hot water tank, 10...
・Heat absorbing material, 13...Partition wall, 14...
Injection side water storage chamber, 15...Discharge side water storage chamber, 16.
...Inlet, 17...Discharge port, 18...
...Communication department.

Claims (1)

[Scope of utility model registration request] In the main body, an endothermic chamber filled with an endothermic material is provided in the upper stage, a combustion chamber surrounding a water tank is provided in the middle stage, and a hot water tank is provided in the lower stage. There are two water storage chambers on the injection side and the water storage chamber on the discharge side that communicate at the bottom.
1. A direct-fired water heater characterized in that the inlet of the inlet-side water storage chamber is provided above the outlet of the outlet-side water storage chamber.