JPS61210255A - Regenerative device - Google Patents

Abstract

PURPOSE:To kill a combustion noise so efficiently with a muffler and a heating medium inside a regenerative tank, by setting up the muffler connected to an internal combustion engine via an exhaust gas heat exchanger, in the regenerative tank, in case of a device which sets up the engine inside the said tank. CONSTITUTION:A regenerative tank 20 being filled up with a heating medium A is provided with a cover body 22 on its upper opening part 21 whereby the inside is closed up airtightly. And, inside the regenerative tank 20, there is provided with an internal-combustion engine 30, while a flywheel 40 and a starter dynamo 50 are set up on the cover body 22. At the above-mentioned, a high frequency sound muffler 70 connected to the internal-combustion engine 30 via an exhaust gas heat exchanger 60, a low frequency sound muffler 80 killing combustion noises at a low frequency zone part and a muffler consisting of a sound absorber 90 are all set up inside this regenerative tank 20. With this constitution, the combustion noise passing through the inside of the regenerative tank 20 is killable by these mufflers 70-90 and, what is more, the noise is also killable by the heating medium inside the regenerative tank 20, thus a muffling effect is well improvable.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a heat storage device for cooling and heating.

(Prior Art) Conventionally, as shown in FIG. 3, an internal combustion engine 11 and a heat storage tank 10 filled with a liquid heat medium A such as water are stored.
A heat storage device is known in which an exhaust gas heat exchanger 12 is connected to the exhaust gas heat exchanger 12, and the heat exchanger 12 is connected to a silencer 13 arranged above the heat storage tank 10.

(Problems to be Solved by the Invention) In the conventional heat storage device, since the silencer 13 is disposed above the hot water storage tank 10, in order to sufficiently silence the combustion noise of the internal combustion engine 11, it is necessary to There was a problem in that the silencer 13 had to be made large, leading to an increase in the size of the heat storage device.

In addition, the heat exchanger 1 from the internal combustion engine 11 to the muffling bag 213
2 had to be formed unnecessarily long, which caused the problem that the heat storage tank 10 was filled with so-called muffled noise.

(Object of the Invention) In view of the above-mentioned conventional problems, the present invention aims to reduce the so-called muffled sound without making the muffling device large (and to reduce the so-called muffled sound).
Furthermore, it is an object of the present invention to provide a heat storage device that can effectively muffle sound.

(Means for Solving the Problems) In order to achieve the above object, the present invention disposes an internal combustion engine 30 in a heat storage tank 20 filled with a liquid heat medium A such as water,
In a heat storage device having a silencer 70, 80.90 connected to the internal combustion engine 30 via an exhaust gas heat exchanger 60, the silencer 70, 80.90 is connected to the heat storage tank 2.
It is characterized by being arranged within 0.

(Function) According to the present invention, since the silencing device is disposed inside the heat storage tank, the combustion noise passing through the silencing device is also muffled by the heat medium in the heat storage tank, thereby increasing the silencing effect. Furthermore, it is possible to reduce the size of the muffling device. Furthermore, since the distance between the internal combustion engine and the muffler is shortened, it is not necessary to make the heat exchanger unnecessarily long, and muffled noise in the heat storage tank can be reduced.

(Example) Figures 1 and 2 show an example of the present invention.
0 is a heat storage tank filled with water (thermal medium) A, and is formed into an oblong box shape with an open upper part, and a lid 22 is attached to the opening 21.
The inside of the heat storage tank 20 is sealed. 30 is an internal combustion engine disposed in the heat storage tank 20; 40 is a flywheel driven by the internal combustion engine 30; 50 is a starter dynamo connected to the flywheel 40;
It is installed on 2.

60 is an exhaust gas heat exchanger, 70 is a high frequency sound muffler (silencer f) that muffles the high frequency range of combustion noise, and 80 is a low frequency sound muffler (silencer f) that muffles the low frequency range of combustion noise.
A sound absorber (silencer) and 90 are sound absorbers (silencers), which are respectively disposed within the heat storage tank 20.

The heat exchanger 60 is formed into a pipe shape, and one end is connected to the exhaust port 31 of the internal combustion engine 30, and the high-frequency sound muffler 70 is connected to the middle of the exhaust port 31 side.

The low frequency sound muffler 80 is formed in the shape of a flat pipe, and is located on both longitudinal sides 20a of the heat storage tank 20.

It is positioned at a predetermined distance from the heat storage tank 20 so as to cover the heat storage tank 20b and the bottom surface 20c. Further, one end of the low frequency sound muffler 80 is located with a small gap 23 from the lid 22 of the heat storage tank 20, and the other end of the heat exchanger 60 is located on one side 20a side of the heat storage tank 20. The other end is connected to the tail pipe 100 on the other side 20b side of the heat storage tank 20.

81 a, 8 l b, 81 c, 81
d is a partition body that partitions the inside of the low-frequency sound muffler 80, and the partition bodies 818 to 81d sequentially open the first expansion chamber 82a, the first expansion chamber 82a, and the second expansion chamber from the connection side with the heat exchanger 60 to the connection side with the tail pipe 100. The second expansion chamber 82b1 forms a third expansion chamber 82c, a fourth expansion chamber 82d, and a fifth expansion chamber 82e. Moreover, each expansion chamber 82a is provided in the partitions 81a to 81d.
- 82e are successively communicated with silencer cylinders 83a, 83
b, 83 c, and 83 d are fitted respectively,
A long hole 84 is provided in each of the muffling cylinders 83a to 83d. Note that the third expansion chamber 82c located on the bottom surface 20c side of the heat storage tank 20 has a recess 85 formed in the lower center thereof.

The sound absorber 90 is for muffling the so-called muffled sound that fills the heat storage tank 20, and is formed between the heat storage tank 20 and the low frequency sound muffler 80, and the low frequency sound muffler is provided in the interval. The part located below the recess 85 of the container 80 (expansion chamber)
All except 91 are filled with a filler having heat insulating and sound dampening properties, such as styrofoam 92.

Note that the high frequency sound muffler 70 and the low frequency sound muffler 80
A drain pipe 71 is provided to connect the two, a through hole 85a is provided in the recess 85, and a drain hole 24 is provided in the bottom surface 20c of the heat storage tank 20 at a position corresponding to the through hole 85a.
The condensed water in the high frequency sound muffler 70 is discharged to the outside of the heat storage tank 20.

Since the present invention is configured as described above, the internal combustion engine 30
The combustion noise generated in the exhaust port 31 flows into the heat exchanger 60 together with the exhaust gas, and further flows into the high-frequency sound muffler 70, whereby the high-frequency combustion noise is muffled.

Further, the exhaust gas flows into the low frequency sound muffler 80, and the first
It is depressurized in the second expansion chamber 82a, further throttled by the muffling cylinder 83a, and sent to the second expansion chamber 82b. The bending action is performed by the second expansion chamber 82b to the fifth expansion chamber 82g and the muffling tube 83.
Also in steps b to 83d, low frequency sounds are muffled by repeating the process in sequence and bringing the gas pressure closer to atmospheric pressure. Furthermore,
The so-called muffled noise generated from the heat exchanger 60 and the like flows into the sound absorber 9o from the gap 23 located above one end of the low frequency sound muffler 8o, and is muffled by the sound absorber 90.

Therefore, all high-frequency sounds, low-frequency sounds, and muffled sounds generated from the internal combustion engine 30 are muffled.

Moreover, the high frequency sound muffler 70 and the low frequency sound muffler 80
is disposed in the heat storage tank 2o filled with heat medium A, so even if combustion noise leaks through the walls of the silencer 70, 80, it is muffled by the heat medium A, improving the silencing effect. I can do it.

Furthermore, since the low-frequency sound muffler 80 and the sound absorber 9° are arranged so as to cover both sides 20a, 20b and the bottom surface 20C of the heat storage tank 20, it is of course possible to muffle the sound. This also means that the heat medium A in the heat storage tank 20 is insulated.

Furthermore, the high-frequency sound muffler 70, the low-frequency sound muffler 80, and the sound absorber 90 are installed in the heat storage tank 20.
Since it is arranged inside the heat storage tank 20, it is not necessary to arrange it outside the heat storage tank 20 as in the conventional case, and the heat storage device can be made compact. Moreover, since the piping of the heat exchanger 60 to the high-frequency sound muffler 70 and the low-frequency sound muffler 80 is shortened,
The muffled noise generated within the heat storage tank 20 is also reduced.

(Effects of the Invention) As explained above, the present invention includes an internal combustion engine disposed in a heat storage tank filled with a liquid heat medium such as water, and an exhaust gas heat exchanger connected to the internal combustion engine. In the heat storage device having a connected silencer, the silencer is disposed within the heat storage tank, so that the combustion noise passing through the heat storage tank is not only muffled by the silencer, but also the noise inside the heat storage tank. The sound is also muffled by the heat medium, which improves the sound muffling effect, and has the advantage that the heat storage device can be made smaller. Furthermore, since the distance between the internal combustion engine and the muffling device is shortened, there is an advantage that it is not necessary to make the heat exchanger unnecessarily long, and muffled noise in the heat storage tank is also reduced.

[Brief Description of the Drawings] The drawings are provided to explain the heat storage device according to the present invention.
1 and 2 show an embodiment of the present invention, FIG. 1 is a sectional view of the heat storage device as seen from the front, FIG. 2 is a sectional view of the heat storage device as seen from the side, and FIG. 3 is a conventional one. FIG. 2 is a cross-sectional view of the heat storage device seen from the front. 20... Heat storage tank 30... Internal combustion engine 60... Exhaust gas heat exchanger? 0.80.90... Silencer A... Heat medium 2nd
figure

Claims (3)

[Claims] (1) In a heat storage device having an internal combustion engine disposed in a heat storage tank filled with a liquid heat medium such as water, and a silencer connected to the internal combustion engine via an exhaust gas heat exchanger, A heat storage device characterized in that a silencer is disposed within the heat storage tank. (2) The heat storage device according to claim 1, wherein a part of the silencer is disposed so as to cover at least one side of the inside of the heat storage tank. (3) A part of the silencing device is disposed at a predetermined distance from the heat storage tank, and the space is filled with a silencing and heat insulating member having silencing and heat insulating properties. The heat storage device according to item 2.