JPS59165848A - Engine supporting construction for engine-driven heat accumulating system - Google Patents

Abstract

PURPOSE:To reduce noise by supporting the engine, which is installed inside a container accommodating a thermomedium such as water, by the body of this container through a vibro-preventive material, and by covering the upper part of engine with a case at the outside of this vibro-preventive material. CONSTITUTION:When an engine 11 is started, the heat emission because of the temp. rise of this engine is directly absorbed by a thermo-medium accommodated in a container 1, while the exhaust heat passing through an exhaust pipe 22 is absorbed by thermo-medium through a radiator 23. The heated thermo- medium should serve as heat source for warming rooms or supplying the hot water. The engine 11 drives a compressor 13, and a heat pump circuit 31 will heat the refrigerant in said container 1 or cool the rooms. The engine 11 is immersed in this thermo-medium while the compressor 13 is covered with a noise-insulative case 12, so that noise generation is much reduced. A lid 5 is set on the body 2 of container 2 through vibro-preventive material 3, and the engine 11 and compressor 13 are mounted at the mounting part 5A supported by this lid 5 through vibro-preventive material 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an engine-driven heat storage system that utilizes engine drive exhaust heat to store heat in a heat medium such as water, and particularly relates to an improvement in the support structure of the engine.

[Background Art] Conventionally, so-called engine heat pumps in which a heat pump compressor is driven by an engine have been known. Since this device uses an engine 1111, noise becomes a problem.

Therefore, in addition to this noise countermeasure, in order to effectively utilize the driving heat and exhaust heat of the engine, we immersed the engine in a water tank filled with a heat medium such as water, thereby solving the engine noise and A system was devised in which a heating medium is heated by exhaust heat and used as a heat source for hot water supply, etc.

However, such a system is not perfect as a noise countermeasure because the driven equipment driven by the engine, such as the compressor, is exposed to the outside. Further, since the engine is directly fixed to a part of the water tank, vibrations caused by the engine drive are transmitted to the outside through the water tank, resulting in noise caused by the vibrations, which is a problem.

[Object of the Invention] Therefore, an object of the present invention is to provide an engine support structure that can reduce noise caused by engine drive and vibration in an engine-driven heat storage system.

C Configuration of the Invention] Therefore, in the present invention, an engine installed inside a tank body containing a heat medium such as water inside is supported by the tank body at least through a vibration isolator, and the vibration isolator The upper part of the engine is covered with a case on the outside of the material, so that the engine as a vibrating body and the tank body as a static body with a large mass are separated by a vibration isolating material, and the noise from above the engine is separated. The purpose is to achieve the above objective by preventing this with a case.

[Explanation of Examples] Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows the entirety of this embodiment. In the same figure,
The storage tank l includes a cylindrical tank body 2 that houses a heat medium (water in this example) inside, and a watertight tank body 2 that is made watertight through a vibration isolating material 3 such as rubber and a sealing material 4 at the top opening of the tank body 2. It is composed of a lid body 5 that is fitted in a circular manner. The vibration isolating material 3 is provided at several locations 1 in the circumferential direction in the vertical gap between the tank body 2 and the lid 5. Thereby, vibrations of the lid body 5 are absorbed and not transmitted to the tank body 2. Furthermore, the sealing material 4 is inserted along the entire circumference of the gap between the tank body 2 and the lid 5 in the circumferential direction, so that the storage tank I has a completely sealed structure.

On the other hand, in the lid 5, the central engine mounting portion 5A serving as a support plate is separated from the other portion 5B, and is supported by the other portion 5B via a vibration isolating material 10 made of rubber or the like. . The engine 11 immersed in the heating medium is mounted on the lower surface of the engine mounting portion 5A, and a compressor as a driven device, which is driven by the engine 11 and whose exterior is covered with a soundproof case 12, is mounted on the upper surface of the engine mounting portion 5A. 13 is installed.

The soundproof case 12 includes an inner case 14A and an outer case 14.
The mounting position of the inner case 14A to the lid body 5 is the same as that of the vibration isolating material 1.
The position is outside of 0. The inside of the inner case 14A is communicated with the atmosphere through a filter 17, and the space between the inner case 14A and the outer case 14B is communicated with the atmosphere through an introduction pipe 18. Each case 14A
.

14B includes a cylindrical damping plate 15 attached to the upper surface of the lid 5 so as to cover the compressor 13, and a sound absorbing material 16 having heat insulating properties affixed to the inner surface of the damping plate 15. It is configured. Here, as the damping plate 15, a single heavy plate, for example, a composite plate of ferrite, lead, rubber, etc. is used. Further, as the sound absorbing material 16, for example, asbestos, glass wool-based material, urethane, or cam core is used.

Further, on the intake port side of the engine 11, one end is provided at the engine mounting portion 5A of the lid body 5, and a knob seal 2 is provided.
4 and protrudes into the inner case 14A.
The other end of 1 is connected to the exhaust port side, and the middle part is immersed in the heating medium, and one end is provided to the other part 5B of the lid 5 or passes through the knob seal 25 to the inner case 14A. The other end of the exhaust pipe 22 protruding into the space between the outer case 14B and the outer case 14B is connected. At the end of the exhaust pipe 22, a radiator 23 is provided near the engine 11 to release exhaust heat from the engine 11 into the heat medium of the tank body 2. Thereby, when the engine 11 is driven, exhaust heat from the engine 11 is released from the radiator 23, and as a result, the heat medium in the tank body 2 is heated.

Further, a known heat pump circuit 31 is connected to the compressor 13. In the heat pump circuit 31, a pipe 30 from one connection port side of the compressor 13 is connected to one end side of the heat exchanger 32 in the storage tank 1.
The piping 33 from the other end passes through the seal 38 provided on the lid 5 and connects to the expansion valve 34.
5 is connected to one end side of the heat exchanger 36 on the other side, and a pipe 37 from the other end side of the heat exchanger 36 is connected to the other connection port side of the compressor 13 through the filter 17 of the soundproof case 12. It is configured.

Next, the operation of this embodiment will be explained. Engine 11 now
When the compressor 13 is driven by the start-up, the heat pump circuit 31 can heat the heat medium in the storage tank 1 or cool the room using a known refrigeration cycle.

On the other hand, when the engine 11 is started, the temperature of the engine 11 is gradually increased, and the exhaust gas from the engine 11 is discharged to the outside through the exhaust pipe 22. Then, the heat generated by the temperature rise of the engine 11 is absorbed directly, and the exhaust heat from the engine 11 is absorbed by the heat medium in the storage tank l via the radiator 23. As a result, the heat medium in the storage tank l contains heat from the engine 11 and exhaust heat from the engine 11, as well as heat from the engine 11.
The temperature is increased by heat radiation from the heat pump circuit 31.

The heat medium heated in this way is used as a heat source for hot water supply and space heating.

Therefore, according to this embodiment, the compressor 13 is driven by the engine 11 to perform cooling, and at the same time, the engine 11
The heat medium in the storage tank 1 is heated using the heat generated by the heat pump, the exhaust heat, and the heat radiation from the heat pump circuit 31, and this heat medium is used as a heat source for space heating, hot water supply, etc., so energy can be used effectively. Each engine 11 can perform cooling, heating, and hot water supply.

Further, since the engine 11 is immersed in the heat medium in the sealed storage tank l, and the compressor 13 is covered with the soundproof case 12, the noise of the engine 11 and the compressor 13 can be reduced, and the soundproof case 12 also covers the compressor. Since only the area around 13 is required, the overall structure can be made small and inexpensive. Moreover, the soundproof case 12 is formed into a double chamber structure partitioned from each other by an inner case 14A and an outer case 14B, and air is taken in from the engine through the inside of the inner case 14A, and through the space between the inner case 14A and the outer case 14B. Since the engine 11 is vented, the soundproof case 12 acts as a muffler to muffle the air intake and exhaust of the engine 11, thereby further reducing the noise of the entire system.

In addition, the lid 5 is fitted to the tank body 2 via the vibration isolator 3, and the engine mounting portion 5A of the lid 5 is supported via the vibration isolator IO to the other portion 5B. Since the engine 11 and compressor 13 are installed on the mounting part 5A,
Mechanical vibrations of the engine 11 and compressor 13 are absorbed by the vibration isolator lO, and vibrations transmitted to the other part 5B of the lid body 5 are absorbed by the vibration isolator 3. As a result, the engine 11 as a vibrating body The tank body 2, which is a static body with a large mass, is bordered by the vibration isolating material 3.10, and not only is there no noise associated with the mechanical vibration, but also the tank body 2, which is a static body with a large mass, is
can prevent transmission to.

Furthermore, since the soundproof case 12 is composed of a damping plate 15 and a sound absorbing material 16, and the sound absorbing material 16 is made of a material having heat insulating properties, heat radiation from the compressor 13 is prevented, thereby improving the efficiency of the heat pump. be able to.

In addition, in implementation, the outer case 14B of the soundproof case 12
If it is configured to cover the entire lid 5 as shown in FIG. 2, leakage noise from the lid 5 can also be insulated.
The noise of the entire system can be further reduced. 5. Furthermore, as shown in FIG. 3, the soundproof case 12 may be configured by one case.

Furthermore, as shown in FIG. 4, the engine 11 is attached to the support plate 41 provided with an engine attachment part, and the brackets 42 are attached to multiple locations on the support plate 41 by bolts 43.
, and the tip of the bracket 42 may be attached to the upper part of the tank body 2 with a bolt 45 via a vibration isolating material 44 made of elastic rubber. In this case, a heat insulating sound absorbing material 4 similar to the sound absorbing material 16 of the sound insulating case 12 is provided on the outer periphery of the tank body 2 as necessary.
6, and a cushioning material 47 made of elastic rubber or the like may be attached to the inner surface of the soundproof case 12 at the portion that comes into contact with the upper edge of the tank body 2, if necessary. In addition, the bolts 45 are used to prevent displacement in the circumferential direction due to engine vibration, etc., and there is no need to tighten the tank body 2 and the bracket 42, and the tightening reduces the vibration isolating effect of the vibration isolating material 44. can be prevented.

Even if the engine 11 is supported with such a configuration, the vibration isolating material 44 can exhibit the same effect as the vibration isolating material 1o of each of the above embodiments, and the vibration of the engine ii is not transmitted to the tank body 2, and sufficient Can be prevented and soundproofed.

Alternatively, as shown in FIG. 5, a seven-edge portion 41A may be integrally formed on the support plate 41, and the support plate 41 may be supported on the tank body 2 using this flange portion 41A.

In this case, the vibration isolating material 44 may be interposed on the support plate 41 side, and in this way, the engine 11 can be supported by sinking deeper into the tank body 2, and the height of the soundproof case 12 can be lowered. Further, in this embodiment as well, a vibration isolating material 44 may be interposed between the tank body 2 and the bracket 42 as in the embodiment shown in FIG.

Furthermore, as in the embodiment shown in FIG. 6, the flange portion 4LA of the support plate 41 may be supported directly on the upper part of the tank body 2 via the vibration isolating material 44. In this case, the vibration isolating material 44 is in the form of fragments. The shape is not limited to this, and may be a ring shape, or even a hollow ring shape (tube shape). In this way, if the vibration isolating material 44 is provided around the entire circumference, a sealing effect can be expected.
It is also useful for soundproofing the auxiliary machinery on the top of the machine.

Also, as shown in Figures 7 and 8, there is an arm 48A on the king side.
It may be supported using a ring-shaped suspension arm 48 having a diameter.

Furthermore, as shown in FIG. 9 and FIG. 41 may be supported.

With this configuration, the area as a sound source is reduced to approximately the area of the support plate 41, and the soundproofing effect can be increased. Furthermore, even if the sizes of the support plates 41, brackets 42, etc. are kept constant, the present invention can be applied to tank bodies 2 of different sizes by simply using an appropriate support ring 49. Furthermore, since the support plate 41 does not need to be made large, the support plate 41, which tends to be complicated to process, can be made inexpensive. In this case, it is natural that the support ring 49, which is separated from the engine 11 by the vibration isolating material 44, is preferably made of a material with a large mass, such as thick steel, in terms of vibration isolation.

Note that the present invention is not limited to the heat pumps described in the above embodiments, but can also be applied to any device driven by an engine, such as a starter machine or a pump. Further, the engine mounting portion 5A and the support plate 41 are not necessarily required, and the bracket 42 may be directly attached to the engine 11 to allow the tank body 2 to support the engine L. In this case, from the engine 11 to the tank body 2
Of course, a vibration isolating material is interposed between the two.

[Effects of the Invention] As described above, according to the present invention, in an engine-driven heat storage system, the engine is supported on the tank body via a vibration isolating material to separate engine vibration from the tank body, and the case Since it is fitted on the outside of the vibration isolating material, it is possible to provide an engine support structure that can reduce mechanical noise and noise caused by vibration accompanying the driving of the engine.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention, FIGS. 2 to 7 are sectional views of the whole or essential parts showing different modifications of the engine support structure, and FIG. FIG. 9 is a sectional view of a main part showing still another modification of the engine support structure, and FIG. 10 is a perspective view of a support ring used in the modification of FIG. 9. It is a diagram. l... Storage tank, 2... Tank body, 5... Lid, 5A.
...Engine mounting part as a support plate, 10...
Vibration isolation material, 11...engine, 12...soundproof case,
15... Vibration damping plate, 16... Sound absorbing plate, 41... Support plate, 42... Bracket, 44... Vibration isolating material. Agent Patent attorney Minoru Kinoshita (and 1 other person) Figure 1 Figure 2 Figure 3 Figure 4 Figure 2 Figure 6 Figure 7 Figure 8 Figure 9 Figure 1O

Claims (1)

[Claims] (1) An engine-driven heat storage system in which an engine is installed inside a tank body containing a heat medium such as water, and exhaust heat from the engine is used to store heat in the heat medium in the tank body. An engine support structure for an engine-driven heat storage system, characterized in that an engine is supported on the tank body through at least a vibration isolator, and an upper part of the engine is covered with a case outside the vibration isolator.