JP2000029469A - Heat insulation room with double walls - Google Patents

Abstract

(57) [Problem] To provide an effective heat and sound insulation by forming a chamber from a double-walled structure having a vacuum layer inside, reducing the surface area of the chamber as much as possible. To provide a heat and sound insulation room composed of double walls. SOLUTION: The heat insulation sound insulation room having the double wall is formed in a shape having a flat surface 16 in a part of a cylindrical body 1 having a circular cross section and an elliptical shape substantially close to a circular shape. The chamber 18 comprises the double-walled structure 2 in which the hollow portion 8 inside is formed in a vacuum layer. The double-walled structure 2 includes a pair of frames 6 and 7 that are spaced apart from each other to form a hollow portion 8, a surface panel 9 fixed thereto, and frames 6 and 7 and a surface. The panel 9 is formed of a seal member that is disposed at a contact portion with the entire peripheral edge and seals the inside of the hollow portion 8 in a vacuum state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-walled heat insulation and sound insulation system which is used as a sound insulation room for sound insulation of a stationary or vehicle-mounted refrigerated freezer or a stationary or vehicle-mounted engine. About the warehouse.

[0002]

2. Description of the Related Art In general, a diesel engine using fuel such as light oil is used as a cogeneration system or an engine for a vehicle, and there are many systems in which a generator is attached to the engine. Also, the noise level of a diesel engine is not easy to reduce because the pressure in the cylinder is high and the explosive load generated in the combustion chamber is large. Engines such as cogeneration systems and hybrid engines are often installed in urban areas or urban areas, or run in urban areas or urban areas.
When the cogeneration system is set in a predetermined place of a building such as a building, a problem of pollution such as noise and vibration occurs.

Incidentally, a double-walled structure having a vacuum layer (for example, a thermos) can effectively block heat and sound. That is, in the structure, the transmission of heat and sound is interrupted by the vacuum layer by evacuating the hollow portion having the double wall.

[0004] In order to cut off noise generated from a sound source such as an engine, a wall on which sound waves are supposed to penetrate is solid or solid.
A laminated structure in which gas and solid are sequentially laminated, a laminated structure in which the wall surface is covered with a heavy material such as lead, or a laminated structure in which the space between the wall surfaces is evacuated to block the propagation of sound waves can be satisfactorily blocked. The present inventor has developed a sound insulation structure for an engine from the above viewpoint and filed an earlier application (see, for example,
-30453, Japanese Patent Application No. 10-39868).

[0005]

However, when a vacuum layer is provided in the hollow portion of the double wall, the structure or container may be spherical, cylindrical or cylindrical, since the atmospheric pressure will compress and deform the structure. It is preferable to have an arc shape from the viewpoint of reducing the surface area. That is, for heat and sound, the smaller the surface area of the structure, in other words, the smaller the radiation area, the smaller the radiation energy to the outside or the absorption energy from the outside.

In an engine such as a vehicle engine,
In order to cut off the generated noise, it is most effective to construct the engine itself with a sound insulation cover.
When objects such as equipment attached to the engine have complicated shapes, to shield them, the sound insulation cover is molded with a molding press or the like so that the objects can be covered efficiently by the sound insulation cover. It is necessary to form the gap between the sound insulation cover and the object as little as possible.

[0007]

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to adopt a structure having a reduced surface area with respect to the internal volume of a double wall structure, and to form a vacuum layer inside the double wall structure. Refrigerated freezer for storing articles such as refrigerated goods and frozen goods in a chamber composed of the double-walled structure, a refrigerated freezer mounted on a vehicle for transporting those goods, and installed in the chamber It is an object of the present invention to provide a double-walled heat and sound insulation room that can be applied to a sound insulation room that shuts off a sound source such as an engine.

According to the present invention, there is provided a cylindrical body having an oval or polygonal shape having a circular or substantially circular cross section, or a chamber formed into a shape having a flat surface in a part of the cylindrical body. Consisting of a double-walled structure,
A pair of inner and outer frames, which are arranged opposite to each other and are spaced apart from each other, a front panel fixed to the frame and forming a hollow portion between the frames, and all peripheral edges of the frame and the front panel; The present invention relates to a heat and sound insulation room comprising a double wall comprising a sealing member arranged at a contact portion of the above and sealing the inside of the hollow portion in a vacuum state.

The double-walled heat and sound insulation room is provided with a vacuum pump for sucking air from inside the hollow portion so as to make the inside of the hollow portion vacuum.

[0010] Furthermore, the heat and sound insulation chamber comprising the double wall is
A pressure sensor for detecting a degree of vacuum in the hollow portion is provided, and the vacuum pump is operated to maintain the vacuum in the hollow portion in response to a predetermined or more pressure signal from the pressure sensor.

[0011] Elastic bodies are provided between the frames to block vibration from each other. Further, the elastic body is composed of a rubber tube filled with air.

[0012] The frame is provided with a groove for disposing the seal member.

The panel has a shape consisting of a part of a spherical surface protruding outward or a part of a cylindrical surface having an arc-shaped cross section.

[0014] The double-walled heat and sound insulation cabinet is applied as a refrigerator or a refrigerator, or a refrigerator or a refrigerator having a refrigerator mounted on a vehicle, or a sound insulation room for accommodating a sound source such as an engine.

[0015] As described above, in the heat insulation and sound-insulating cabinet having the double wall, the hollow portion inside the double wall structure is formed in the vacuum layer, and the surface area with respect to the volume constituting the chamber is as small as possible. Since it can be made small and the radiant energy from the chamber to the outside or the absorbed energy from the outside to the chamber can be made as small as possible, it is possible to construct a very energy-saving refrigerated freezer by cooling the inside of the chamber with a cooler. In particular, when a refrigerated freezer is mounted on a vehicle, a refrigerated freezer with low power consumption can be constructed, and if a sound source such as an engine is housed in a chamber, noise can be effectively reduced. It can be configured as a sound insulation room that blocks the air.

[0016] The heat and sound insulation cabinet comprising the double wall is
Since the hollow part of the double-walled structure is formed as a vacuum layer, the heat insulation of the double-walled structure can be increased, and the thickness of the double-walled structure itself can be reduced. The weight of the freezer can be reduced, and an extremely effective refrigerated freezer can be provided. In addition, if the vacuum pump is operated to evacuate the hollow portion of the double-walled structure, the inside of the chamber is shielded and cool air does not escape to the outside, so the operation period of the refrigerator can be shortened.
The running cost can be reduced, and power is not consumed much even when mounted on a vehicle.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a double-walled heat and sound insulation room according to the present invention.
FIG. 1 is a perspective view showing an embodiment of a double-walled heat and sound insulation room according to the present invention, FIG. 2 is a partially enlarged perspective view of the double-walled heat and sound insulation room, and FIG. It is sectional drawing which shows the Example of the double wall structure of the heat insulation sound insulation room which consists of a double wall of FIG.

The heat and sound insulation chamber having a double wall according to the present invention is formed in a cylindrical body 1 (see FIG. 1) having a flat surface 16 in a part of an oval having a circular or substantially circular cross section. The chamber 18 includes a double wall structure 2. The end of the cylindrical double wall structure 2 is sealed with a hollow lid 5 such as a molded rubber or a tube. The end of the chamber 18 formed by the double wall structure 2 is closed by the chamber lid 4 of the double wall structure. Since the chamber 18 formed by the cylindrical body 1 has the above shape,
The surface area of the chamber 18 can be made as small as possible.

The double wall structure 2 forms a hollow portion 8 between the outer frame 6 and the inner frame 7, which are located inside and outside facing each other and spaced apart from each other, and between the outer frame 6 and the inner frame 7. And a sealing member 12 arranged at a contact portion between the outer frame 6 and the inner frame 7 and the entire peripheral edge of the surface panel 9. I have. Front panel 9
Is fixed to the outer frame 6 and the inner frame 7 with a large number of fixing bolts 11 and rivets.

As the seal member 12, an O-ring made of a hard rubber material or the like can be used. A groove 13 is formed in the outer frame 6 and the inner frame 7 so that the seal member 12 is securely fixed. Seal member 1
2 seals the contact portions between the outer frame 6 and the inner frame 7 and the surface panel 9 to form the inside of the hollow portion 8 in the vacuum layer 10.

The double-walled heat and sound insulation chamber is provided with a hollow section 8 for making the inside of the hollow section 8 of the double-walled structure 2 vacuum.
A vacuum pump 15 for sucking air from the inside and a pressure sensor 14 for detecting the degree of vacuum in the hollow portion 8 are provided.
The vacuum pump 15 operates in response to a pressure signal of a predetermined level or more from the pressure sensor 14 and can reduce the pressure in the space of the hollow portion 8 to a substantially vacuum or reduced pressure.
0 can be maintained at an appropriate degree of vacuum. Therefore, as described above, the heat insulation and sound insulation chamber having the double wall can have the surface area of the chamber 18 as small as possible, and the hollow portion 8 between the outer frame 6 and the inner frame 7 has a vacuum. Tier 1
0, it is possible to most effectively shut off noise from the chamber 18 to the outside, or
It is possible to most efficiently block the heat received from the outside into the chamber 18.

The hollow portion 8 formed between the outer frame 6 and the inner frame 7 has elastic members 17 for isolating vibration from each other.
Are spaced apart. The elastic body 17 is formed of a molded rubber tube filled with air. By disposing the elastic body 17 in the hollow portion 8, the double wall structure 2 can be configured to have a more stable structure.

As shown in FIG. 3, the panel 9 has, in particular, a shape consisting of a part of a spherical surface protruding outward or a part of a cylindrical surface having an arc-shaped cross section. The panel 9 can be made of, for example, a synthetic resin, an aluminum plate, or the like, which can be formed into a predetermined shape by press working. In the case where the heat insulation and sound-insulating cabinet composed of the double walls is configured as a sound-insulating cabinet, the inside of the panel 9 is coated with a sponge rubber or the like in order to reduce the reflection sound of the vacuum layer 10 in the hollow portion 8. be able to.

[0024] Since the heat insulation and sound-insulating cabinet composed of the double wall is constructed as described above, it is possible to generate a sound of a refrigerator-freezer or an engine by mounting the refrigerator-freezer on a stationary type or a vehicle. It can be used as a sound insulation room to house the source, and can exhibit the effect of blocking heat and noise.

Next, with reference to FIG. 4, another embodiment of the heat and sound insulation room having a double wall according to the present invention will be described. FIG.
FIG. 7 is a perspective view showing another embodiment of the heat and sound insulation room having a double wall according to the present invention. This embodiment has the same shape as the above embodiment except that the shape of the cylinder formed by the double-walled structure is different. Therefore, parts having the same functions are given the same reference numerals. , Duplicate description is omitted.

The double-walled heat and sound insulation room is a cylindrical body 3 having a double-walled structure 2 having a chamber 18 having an oval or polygonal cross-section having a substantially circular cross section. It was formed. By forming the chamber 18 formed by the double wall structure 2 into a substantially circular shape, the surface area of the chamber 18 can be formed as small as possible.

Next, with reference to FIG. 5, a further embodiment of the heat and sound insulation room having a double wall according to the present invention will be described.
FIG. 5 is a perspective view showing a refrigerator-freezer equipped with a vehicle equipped with a heat and sound insulation room having double walls according to the present invention. This embodiment has the same configuration except that the heat and sound insulation chamber shown in each of the above embodiments is mounted on a vehicle. Therefore, components having the same functions are denoted by the same reference numerals, and redundant description will be omitted.

The heat and sound insulation chamber having double walls according to the present invention is mounted on a vehicle 23 to constitute a refrigerator-freezer 20. The refrigerator-freezer 20 is a vehicle 23 having tires 22.
Is mounted on the vehicle body frame 21. In the vehicle 23,
A refrigerator 19 is mounted. The vehicle 23 can be equipped with a system including a turbocharger, an energy recovery device, a steam turbine, a heat exchanger, and the like that can convert heat energy of exhaust gas discharged from the engine into electric energy. Therefore, sufficient electric power can be secured from the exhaust gas heat energy by operating the engine, and the electric power can be used to easily and sufficiently drive the vacuum pump 15 as well as the refrigerator 19 mounted on the vehicle 23, and The heat and sound insulation can always be maintained in an optimum state.

Although not shown, the double wall structure 2
Can be formed in a substantially circular polygonal shape, for example, an octagon, a decagon, or the like. By forming the chamber 18 into a substantially circular polygon, the surface area of the chamber 18 can be made as small as possible.

[0030]

As described above, the double-walled heat and sound insulation chamber according to the present invention can maintain the hollow portion of the double-walled structure in a vacuum state and can form a chamber formed of the double-walled structure. Since the surface area with respect to the volume of the chamber can be made as small as possible, the vacuum layer can effectively block radiant energy from the chamber formed of the double-walled structure to the outside, or can reduce the radiant energy from the outside into the chamber. Absorbed energy such as heat energy can be cut off and applied to stationary refrigerated refrigerators and refrigerated refrigerated vehicles mounted on vehicles, minimizing power consumption for driving the refrigerator, and significantly reducing running costs.
The noise can be effectively cut off by applying to a sound insulating cover or the like that cuts off noise of an engine or the like.

Further, an engine equipped with a turbocharger, an energy recovery device, and the like can convert heat energy of exhaust gas into electric energy, so that a vehicle equipped with such an engine system can secure sufficient electric power. In the case of a refrigerator equipped with a double-walled heat and sound insulation chamber mounted on a vehicle equipped with such an engine, the power recovered from the heat energy of the exhaust gas is used to drive the refrigerator and vacuum pump. If used, for example, it is possible to cool the refrigerated freezer only with the electric power of the vehicle without using external electric power,
Extremely effective.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a heat and sound insulation room having a double wall according to the present invention.

FIG. 2 is a partially enlarged perspective view of a heat and sound insulation room having a double wall in FIG. 1;

FIG. 3 is a cross-sectional view showing an embodiment of the double wall structure of the heat and sound insulation room of FIG. 1;

FIG. 4 is a perspective view showing another embodiment of the heat and sound insulation room having a double wall according to the present invention.

FIG. 5 is a perspective view showing still another embodiment of the heat and sound insulation room having a double wall according to the present invention.

[Explanation of symbols]

 1, 3 cylindrical body 2 double wall structure 6 outer frame 7 inner frame 8 hollow portion 9 panel 10 vacuum layer 12 seal member 13 groove 14 pressure sensor 15 vacuum pump 16 flat surface 17 elastic body 18 chamber 19 refrigerator 19 refrigerator Refrigerating car 21 Body frame 22 Tire 23 Vehicle

Continued on front page F term (reference) 3H036 AA08 AA09 AB33 AC06 AE08 AE13 3J046 AA04 AA20 BA03 BC16 DA03 3L102 JA02 JA06 JA07 LB02 LB07 LB08 LB11 LB27 LC12 LC14 LC19 LC23 MB30 5D061 BB01 BB11 CC12

Claims (8)

[Claims] 1. A chamber comprising a cylindrical body having a circular or substantially circular oval or polygonal shape, or a chamber formed into a shape having a flat surface in a part of said cylindrical body. A double-walled structure, wherein the double-walled structure is a pair of frames located inside and outside which are spaced apart from each other and is fixed to the frames and forms a hollow portion between the frames. A heat insulation and sound insulation cabinet comprising a front panel and a double wall comprising a sealing member disposed at a contact portion between the frame and the entire periphery of the front panel and sealing the inside of the hollow portion in a vacuum state. . 2. The double-wall heat and sound insulation cabinet according to claim 1, further comprising a vacuum pump for sucking air from inside the hollow portion so as to make the inside of the hollow portion vacuum. 3. A pressure sensor for detecting a degree of vacuum in the hollow portion is provided, and the vacuum pump is operated in response to a pressure signal of a predetermined level or more from the pressure sensor to maintain a vacuum in the hollow portion. A heat and sound insulation cabinet comprising the double wall according to claim 2. 4. The thermal insulation room with double walls according to claim 1, wherein elastic bodies that block vibration from each other are arranged between said frames. 5. The heat and sound insulation room comprising a double wall according to claim 4, wherein said elastic body is constituted by a rubber tube filled with air. 6. The heat and sound insulation room comprising a double wall according to claim 1, wherein a groove for disposing the seal member is formed in the frame. 7. The double-wall heat insulation sound insulation as claimed in claim 1, wherein said panel has a shape consisting of a part of a spherical surface protruding outward or a part of a cylindrical surface having an arc-shaped cross section. Warehouse. 8. The double wall according to claim 1, wherein the double wall is used as an installation type refrigerated freezer, a refrigerated freezer equipped with a refrigerated freezer in a vehicle, or a sound insulation room containing a sound source such as an engine. A heat and sound insulation shed.