JPH025204Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a pulse generator configured so that combustion exhaust gas exploded and burned in a combustion chamber flows into a tail pipe, and is discharged from a large spring chamber connected to the tail pipe. Regarding the combustor.

In the prior art, as shown in FIG. 1, an installed liquid heating device 3 using pulse combustion is provided to heat the liquid 2 stored in the liquid storage tank 1 shown by the phantom line. The combustion chamber 4 of the liquid heating device 3 is fitted in a hole penetrated through the side of the liquid storage tank 1 in a liquid-tight manner.
On the downstream side of the combustion chamber 4, a tail pipe 6 immersed in the liquid 2 below the liquid level 5 shown by the imaginary line, a decoupling chamber 7, and an exhaust pipe 8 are provided in this order. Further downstream of 8, a silencing chamber 9 is provided above the liquid level 5. These tail pipe 6, large spring chamber 7 and exhaust pipe 8
is arranged to extend over almost the entire bottom of the liquid storage tank 1.

For this reason, an unusable dead space is formed in the liquid storage tank 1, and wasteful liquid 2 is required to enter this dead space, and extra energy is required to heat this wasteful liquid 2. Furthermore, maintenance work such as cleaning the liquid storage tank 1 is complicated because the disposed tail pipe 6, large spring chamber 7, exhaust pipe 8, etc. are obstacles. Also, when installing the liquid heating device 3 in the liquid storage tank 1, a hole is formed in the side of the liquid storage tank 1 to form a combustion chamber 4.
It was necessary to install the

The purpose of the present invention is to solve the problems of the prior art, to prevent the formation of dead spaces in the liquid storage tank in which the liquid to be heated is stored, and to easily install the liquid in the liquid storage tank. It is an object of the present invention to provide a pulse combustor in which cleaning and maintenance work of a liquid storage tank is easy.

The present invention provides a pulse combustor configured such that combustion exhaust gas exploded and burned in a combustion chamber flows into a tail pipe, and is discharged from a large spring chamber connected to the tail pipe. is formed below the burner head to which fuel and combustion air are supplied, and the combustion chamber, tailpipe, and decoupled spring chamber are housed in a casing with an inclined bottom. A partition wall is formed to separate and communicate the tail pipe and the decoupling chamber, and the area near the burner head is near the liquid level, and the casing is immersed in the liquid to be heated to heat the liquid. This is a pulse combustor characterized by the following.

Embodiments of the present invention will be described below with reference to the drawings. Figure 2 shows a pulse combustor 1 of an embodiment of the present invention.
1, FIG. 3 is a simplified vertical sectional view of the pulse combustor 11 shown in FIG. 2, and FIG. 4 is a sectional view taken from the cutting plane line - in FIG. 3. . The pulse combustor 11 roughly includes a casing 12, a burner head 13 connected to the upstream side of the casing 12, a combustion supply pipe 14 communicating with the burner head 13, and a combustion air supply pipe 15.
, a decoupling chamber 16 communicating with the downstream side of the combustion air supply pipe 15 , and a common chamber 17 communicating with the downstream side of the decoupling chamber 16 . Inside the casing 12, there is a combustion chamber 18 communicating with the burner head 13, a tail pipe 19 on the downstream side of the combustion chamber 18, and a tail pipe 19.
A decoupling chamber 20 is separated and communicated with a decoupling chamber 20 on the downstream side by a partition wall 21 formed on the inner wall of the casing 12.

Almost all of the casing 12 is immersed except for the upper part of the casing 12 in the liquid 23 stored in the liquid storage tank 22 shown by the phantom line. The casing 12 is formed into a substantially rectangular parallelepiped shape, and the bottom 1 of the casing 12
2a is formed such that it is inclined downward toward one end in the longitudinal direction (the right end in FIG. 3), and the center portion in the direction perpendicular to the longitudinal direction (the left-right direction in FIG. 4) is recessed. The combustion chamber 18 has three wall surfaces 12b and 1 of the casing 12.
It consists of a space formed by 2c, 12d and the partition wall 21. The tail pipe 19 communicates with the downstream side of the combustion chamber 18, and has a passage 19a formed between the partition wall 21 and the wall surface 12c of the casing 12 and extending downward, and a passage 19a that communicates with the passage 19a and connects the partition wall 21 and the wall surface 12d. A downwardly inclined passageway 1 formed between
9b, and the partition wall 21 and the wall surface 1 in communication with the passage 19b.
2b and a downwardly inclined passage 19.
c, and the partition wall 21 and the bottom part 12 in communication with the passage 19c.
a downwardly inclined passageway 19d formed between
It consists of In this way, the tail pipe 19
It is formed into a substantially cylindrical shape between the inner wall of the casing 12 and the partition wall 21, and the liquid 23 is formed from the outer wall of the casing 12.
so that heat is efficiently transferred to the combustion chamber 18.
It is formed to an appropriate length to ensure explosive combustion.

The decoupling chamber 20 communicates with the passage 19d on the downstream side of the tail pipe 19, and is formed in the remaining portion of the casing 12 excluding the combustion chamber 18 and the tail pipe 19. The decoupling chamber 20 is provided to buffer large pressure changes caused by explosive combustion in the combustion chamber 18. On the downstream side of the large spring chamber 20,
A plurality of fins 2 are provided on the casing 12 and the partition wall 21.
4 is formed. Thereby, the heat of the combustion exhaust gas is efficiently transferred to the liquid 23 in which the casing 12 is immersed. Further, on the downstream side of the decoupling chamber 20, a passage 40 formed by the partition walls 39a, 39b and the wall surfaces 12b, 12d of the casing 12 is provided to muffle the explosion and combustion noise in the combustion chamber 18. A silencing room 41 is provided for this purpose.

A drain reservoir 25 is formed at the right end of the bottom 12a of the casing 12 in FIG. 3 in which water generated by combustion is stored. This drain reservoir 25 is provided with one end portion of a drain pipe 26 . The drain pipe 26 extends upward inside the casing 12. An exhaust hole 27 is formed in the upper part of the casing 12 and communicates with the muffling chamber 41 on the downstream side of the decoupling chamber 20 . The other end of the drain pipe 26 is provided to protrude outward from the casing 12 from the exhaust hole 27 .

The operating state of the pulse combustor 11 will be explained. A flange 28 provided on the upper part of the casing 12 and a flange 29 provided on the outside of the burner head 13 are fixed. burner head 1
Fuel gas such as city gas is connected to fuel supply pipe 1 in 3.
It flows in from 4. Combustion air flows from the combustion air supply pipe 15 into the decoupling chamber 16 via a muffler (not shown), and from the decoupling chamber 16 into the cooperating chamber 17. Combustion air flows from the cooperating chamber 17 into the burner head 13 via a check valve 30. burner head 13
The fuel gas and combustion air supplied from the combustion chamber 18 are ignited by an ignition device (not shown) and are explosively combusted. The explosive combustion exhaust gas flows into the decoupling chamber 20 via the tail pipe 19 and is discharged from the exhaust hole 27, as shown by the arrow 31 in FIG. Once explosive combustion occurs, combustion air and fuel gas are introduced into the combustion chamber 18 due to pressure changes in the combustion exhaust gas, and thermal energy of the combustion exhaust gas is applied from the tail pipe 19, causing explosive combustion. Continued. Thermal energy of explosive combustion in the combustion chamber 18 heats the liquid 23 in which the casing 12 is immersed via the casing 12. As described above, since the tail pipe 19 is also formed so as to be in contact with the casing 12, the thermal energy of the combustion exhaust gas can be efficiently used to heat the liquid 23. Furthermore, the large spring chamber 2 of the casing 12
The heat of the combustion exhaust gas is radiated to the liquid 23 via the casing 12 by the fins 24 provided in the casing 1 and the silencing chamber 41 .

The casing 12 is integrally formed, for example, by casting. Therefore, the present invention does not include a tail pipe 6, an exhaust pipe 8, etc. disposed in the liquid storage tank 1 as in the prior art described above.
The combustion chamber 18, tail pipe 19 and decoupling chamber 20 can be attached to the burner head 13 provided on the upstream side of the casing 12 with good reproducibility. Further, since the casing 12 is simply immersed in the liquid storage tank 22, cleaning and maintenance work on the liquid storage tank 22 can be easily performed, and the formation of dead space in the liquid storage tank 22 can be prevented. It can be done. Therefore, there is no need to heat the excess liquid 23, so consumption of excess thermal energy is prevented.

FIG. 5 shows a casing 3 of another embodiment of the present invention.
FIG. 2 is a partially cutaway perspective view showing No. 2; The casing 32 is similar to the casing 12 of the embodiment described above, and corresponding parts are provided with the same reference numerals.
What should be noted about the casing 32 is that the tail pipe 33 has a substantially rectangular cross section. The manufacturing process of such a casing 32 is as follows:
This is simpler than the manufacturing process of the casing 12. Also in this casing 32, the exploded and combusted exhaust gas is transferred to the combustion chamber 34, as shown by the arrow 34.
8 to the casing 3 via the tail pipe 33, the large spring chamber 20 and the silencing chamber 41.
It is discharged from 2.

FIG. 6 is a plan view of a casing 35 according to still another embodiment of the present invention, and FIG. 7 is a sectional view taken along the section line - in FIG. 6. Parts corresponding to the embodiments described above are given the same reference numerals. The casing 35 includes a pair of casing members 36 and 37
is fixed. The casing member 36 and the casing member 37 are formed symmetrically with respect to the fixing surface 38 as a plane of symmetry. Inner wall 36 of casing member 36
In a, the partition wall 21 and the partition wall 39 are connected to the fixing surface 3.
It is installed to protrude so that it is flush with 8. Therefore, the casing 35 includes the combustion chamber 18 and the tail pipe 1.
9, the decoupling chamber 20, and the silencing chamber 41 are separated and communicated with each other. Such a casing 35 can be easily processed using, for example, a press machine.

As described above, according to the present invention, the combustion chamber, the tail pipe on the downstream side of the combustion chamber, and the large spring chamber are integrally housed in the casing, so that the liquid to be heated can be stored in the liquid storage tank. It is possible to obtain a pulse combustor that can be easily installed, prevents dead space from being formed in the liquid storage tank, and facilitates cleaning and maintenance of the liquid storage tank. In particular, in the present invention, since pulsed combustion takes place, the combustion chamber can be formed below the burner head, which is supplied with liquid and combustion air. Therefore, the casing is immersed in the liquid storage tank and the area near the burner head is near the liquid level, so the structure for supplying fuel and combustion air to the burner head is above the liquid level, so the configuration can be simplified. An excellent effect is achieved in that maintenance and inspection are facilitated.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the prior art, FIG. 2 is a perspective view showing a pulse combustor 11 according to an embodiment of the present invention,
FIG. 3 is a simplified vertical sectional view of the pulse combustor shown in FIG. 2, FIG. 4 is a sectional view taken along the cutting plane line - of FIG. 3, and FIG. FIG. 6 is a partially cutaway perspective view showing the casing 32, and FIG. 6 shows the casing 3 of still another embodiment of the present invention.
5, and FIG. 7 is a sectional view taken along the section line - in FIG. 6. 11... Pulse combustor, 12, 32, 35...
Casing, 12a...bottom, 18...combustion chamber,
19, 33... Tail pipe, 20... Big spring chamber, 21, 39, 39a, 39b...
...Partition wall, 23...Liquid, 24...Fin, 41...
Sound deadening room.

Claims (1)

[Scope of Claim for Utility Model Registration] A pulse combustor configured such that combustion exhaust gas exploded and burned in a combustion chamber flows into a tail pipe, and is discharged from a large spring chamber connected to the tail pipe. In this case, the combustion chamber is formed below the burner head to which fuel and combustion air are supplied, and the combustion chamber, tail pipe, and decoupling chamber are housed in a casing with an inclined bottom, and the inner wall of the casing is , a partition wall is formed to separate and communicate the combustion chamber, tail pipe, and decoupling chamber, and the vicinity of the burner head is near the liquid level, and the casing is immersed in the liquid to be heated. A pulse combustor characterized by heating.