JPH0224902Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a soundproof enclosure for general industrial use.

[Conventional technology]

Conventional engine-driven generators and pumps, etc.
In order to reduce engine noise, the entire body is covered with an enclosure 20, etc., as shown in Figures 3 to 5, but noise leakage from the air inlet 21 and outlet 22 for engine cooling and engine combustion is reduced. Therefore, the air passages 23 and 24 were made long and bent many times. In addition, Figure 3 shows - of Figure 4.
FIG. 4 is a cross-sectional view taken from FIG. 3, and FIG. 5 is a cross-sectional view taken from FIG. 3.

[Problem that the invention attempts to solve]

However, when attempting to reduce noise using this method, the enclosure 20 becomes extremely large, and there is a limit to its effectiveness.

The purpose of the present invention is to overcome the drawbacks of conventional devices and to provide a compact and efficient sealed enclosure for ships with limited space, which meets the requirements for noise reduction and good crew accommodation. .

[Means and actions intended to solve the problem]

The sealed enclosure of the present invention isolates the air inside the enclosure from the outside, and guides the internal air to a heat exchanger using a fan and cools it via seawater or fresh water. The above objective can be achieved by direct intake and exhaust to the outside of the enclosure through an air supply pipe or an exhaust pipe.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a cross-sectional view taken from FIG. 2, and FIG. 2 is a cross-sectional view taken from FIG. 1.

Engine 12 and generator 1 connected thereto
3 is completely covered by the enclosure 1. A heat exchanger 2 is installed in the upper part of the enclosure 1 to cool the air inside the enclosure 1 with seawater or fresh water 3. Furthermore, air inlets 5 and air outlets 6 and ducts 7 and 8 are arranged at one to several locations to optimally cool the inside of the enclosure.
A fan 4 is installed in the middle of the duct 7 or 8 to circulate the air.

In addition, the intake pipe 9 and exhaust pipe 10 necessary for engine combustion are led directly to the engine 12 from outside the enclosure 1, and the portions where the intake pipe 9 and exhaust pipe 10 penetrate the enclosure 1 are fitted with special joints. An insulator 11 is used to prevent noise inside the enclosure 1 from leaking to the outside.

Next, the operation of the above embodiment will be explained.

By rotating the fan 4, the air inside the enclosure 1 heated by heat radiation from the engine 12, etc., is passed from the air inlet 5 to the duct 7 to the heat exchanger 2.
and cooled with seawater or fresh water. The cooled air is returned to the original room through the duct 8 and the air outlet 6, forming a complete closed-loop air cooling system.

In addition, the air used for combustion in the engine 12 is taken directly into the engine 12 from outside the enclosure 1 through the intake pipe 9 without using the air inside the enclosure 1, and the exhaust gas is also taken directly outside the enclosure 1 through the exhaust pipe 10. In addition, the portion where the intake pipe 9 and exhaust pipe 10 pass through the enclosure 1 uses a special joint insulator 11 to completely isolate the inside and outside of the enclosure 1, thereby creating the closed-loop air cooling system described above. is complete.

[Effect of idea]

As mentioned above, the sealed enclosure of the present invention has a great soundproofing effect because the air inside the enclosure is isolated from the outside air, and the internal air is also connected to the circuit including the heat exchanger 2 installed in the corner inside the enclosure by a fan. The air inside the enclosure is cooled by seawater or fresh water, and the intake pipe 9 and exhaust pipe 10 necessary for combustion are led directly from the outside of the enclosure 1 to the engine. The air cooling efficiency within the enclosure is greater than before, and a smaller fan can be used.

In addition, when installing a fire extinguishing system for fire inside an enclosure, if there is an opening like a conventional enclosure, a shutter for the opening is required to work with the fire extinguishing system. In this case, it is not necessary because the enclosure is a closed type.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, in which FIG. 1 is a cross-sectional view taken from FIG. 2, and FIG. 2 is a cross-sectional view taken from FIG. 1. 3 to 5 show conventional examples, FIG. 3 is a sectional view of FIG. 4, FIG. 4 is a sectional view of FIG. 3, and FIG. 5 is a sectional view of FIG. 3.
FIG. 1...enclosure, 2...heat exchanger, 4...
...Circulation fan, 7...Air circulation path (duct).

Claims (1)

[Scope of utility model registration request] In an internal combustion engine housed in an enclosure, an air circulation path having an air inlet and an air outlet opening into the enclosure and having a circulation fan, and an air circulation path provided within the air circulation path that allows fresh water or seawater to flow through the air circulation path. and a heat exchanger for exchanging heat with the flowing air, forming a closed circuit in which the air in the enclosure flows back into the enclosure via the air circulation path and the heat exchanger, and the combustion air of the internal combustion engine. A closed enclosure characterized by being equipped with a conduit that introduces from the outside of the enclosure.