JPS6280463A - Housing structure for sound insulation of engine driving heat pump device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a bottom part of a soundproof housing for an engine-driven heat pump device.

[Prior art]

In an engine-driven heat pump, the engine, compressor, etc. are the sources of noise, so it is desirable to house these devices in a housing to prevent noise. However, even when the housing 1-7 is housed in the housing 1-7, noise caused by engine vibration leaks from the bottom of the housing supporting the engine. Therefore,
In order to further improve the soundproofing effect, it is necessary to eliminate such leakage of noise from the bottom of the housing.

Second, in order to support a heavy vibration source like an engine, it is necessary to use a highly rigid support plate that does not cause resonance. This is because if the rigidity of the support plate is insufficient, it will cause an increase in noise due to resonance. Conventionally, such support plates have been made by reinforcing the back side of a flat plate with an angle material or the like. However, when reinforced with such angles, etc., the housing has to be placed on top of one another, which impairs portability, and the angle itself acts as a medium for vibration propagation, so the noise prevention effect is poor. There was a problem that it reduced the number of people.

[Purpose of the invention]

Objective II of the present invention: In an engine-driven engine pump device, the conventional flat plate is reinforced with angle materials, etc. Also, like a support plate, the bottom part of the housing housing the engine etc. is not unnecessarily increased. The purpose is to provide a soundproof housing structure that prevents the leakage of noise caused by engine vibrations, etc.

[Structure of the invention]

The present invention that achieves the above object provides an engine l: (-.

In an engine-driven heat pump device in which a compressor driven by an engine is housed in a housing, the bottom of the housing is surrounded by a corrugated plate for supporting the engine arranged inside and a space below the corrugated plate. It is characterized in that it consists of a shielding plate disposed through the OII recording and recording plates and a sound absorbing +4 inserted between the recording and recording plates.

〔Example〕

The present invention will be explained below with reference to embodiments shown in the drawings.

Figure 1.2 shows the engine/engine housed in the haliminong.
The power part of the drive heat pump is shown.j-3■ is an engine driven by gas fuel such as city gas or propane gas, and 2m11 is
- A compressor fixed to engine 1+. The pressure 61N machine 2 has a pulley 3 on the machine/engine 1 side and a boot I on the compressor 2 side.
It is designed to be driven via the coil 15 wound between the coils 74 and 74. The compressor 2iJ compresses the refrigerant and circulates it to an air heat exchanger 28, which will be described later, via circulation piping. Engine l with compressor 2 fixed in this way
is supported via elastic parts 48, 8 made of rubber or the like on the right and left pillars 7, 7h which are erected on one layer of the corrugated plate 6 at the bottom of the housing, and is housed in the housing 9 having a soundproof structure. has been done.

An intake silencer 10 is provided in the upper corner of the housing 9. +1.12 is a muffler provided in two stages to muffle the exhaust noise of the engine 1, respectively. Among these, the former muffler 1 has a structure that also functions as a heat exchanger for exchanging heat with engine cooling water. In addition, the engine 1 is equipped with L4 ``ignition'': 1 oil bow 3, and a solenoid valve 14 for gas fuel supply. A sewage pump 15 driven by a motor for circulating engine cooling water is attached.

The bottom of the housing 9 forms a space surrounded by a shielding plate [fi] below the corrugated plate 6 that supports the engine 1 and the like, and the space is filled with a sound absorbing material 17 such as polyurethane foam. The corrugated plate [j has a bent shape in which four stripes and convex stripes intersect and adjoin each other, and exhibits extremely high rigidity against carts viewed from a flat surface. The sound-absorbing material 17 has intake passages 18.18 branched into two paths formed therein corresponding to the convex portions of the corrugated plate (i), and the intake passages n19.19 provided on the corrugated plate 6 respectively. It communicates with the inside of the housing 9 through the opening.

The plurality of intake ports 19.19 -]j are connected to the ignition coil 13. One is open near the water pump 15, and the other is open near the solenoid valve 14 (see FIG. 3). l
- On the back side of the shielding plate 16, another sound absorbing hole 20 such as a foamed material is attached. This sound absorption +A20 is provided with an intake passage 21 that extends from 1m to 1m, and this intake J path 21 is connected to the 1m intake path 18.18. The passage 21 may be formed in a straight line and communicate with the outside air as shown in FIG. It can increase the sound absorption effect of noise that is trying to leak from inside.Furthermore,
A sound-insulating skirt 22 is provided around the sound-absorbing material 20 to prevent noise from leaking laterally.

In addition, in the structure of the bottom of the housing described above, the sound absorbing material 20 on the back side of the shielding plate 16 is provided to further improve the soundproofing effect, so depending on the storage of the engine 1, etc. As in the embodiment shown in FIG. 6.7 (the unit 30 is omitted from the illustration), the structure may be such that the sound absorbing material 20 and the scarr 122 are removed.

- On the other hand, an exhaust port 23 is provided on the upper surface of the housing 9, and a ventilation fan 24 is attached to the exhaust port 23 so as to suck out air from inside the housing. If person:, 6J1 Bruised Duck F-27 is taken in IJI+123 and No. 1 J is attached to its inner surface. 1. Ventilation fan 24 is depressed → As a result, the outside air of the crystal is drawn into the intake passage 21 at the bottom, as shown by the mark, and is further drawn into the housing 9 from the intake passage 18.18 to the intake passage 1.19. At this time, the air from (!; After passing through the 1st class, it heads to the exhaust ``123'', from where it is sent to the unit 30 above.

As mentioned above, another unit 30 is installed on the top of the housing 9 in which the power unit is housed, and the fan 28.28
Attached (7) The air heat exchanger 29 is 2 parts +J.
There is no need to place it in the L part of , and depending on the space situation of the 8u storage location, ■ is outside the 1 part. You can also install it in a different location.)

In the engine-driven heat pump device shown in the i4S above, the engine 1 and compressor 2, which are the sources of noise, are housed in the nozzle 1). The noise caused by I) is prevented from leaking to the user. Moreover, it is caused by air pulsation.
Exhaust that makes shell noise? tM′+′ device] 1,
1 and 2 are also accommodated in the housing 9, so that leakage of the shell sound can also be prevented.

In addition, the bottom of the housing 9 has a large rigidity because the support plate for supporting the engine 1 etc. is the corrugated plate 6, and the back side is reinforced with angles) A etc. as in the conventional case. There's no need.

Therefore, the weight is reduced by the absence of angle materials, etc.
It is possible to increase generality. In addition, since there is no angle material, etc., the vibration propagates to the shield UIi 1 6 on the lower side of the conventional support plate O), ), ・j is eliminated, and leakage from the bottom of the housing is eliminated. Noise caused by engine vibration can be reduced. Moreover, since the sound absorbing material 17 is interposed between the corrugated plate 6 and the shielding plate 16, the sound insulation effect is further ensured.

In addition, depending on the capacity of the engine 1, etc., if the sound-absorbing moon 20 and skirt 22 are further placed on the back side of the shielding plate 16, the noise from the bottom of the housing can be reduced. The sound insulation effect can be further improved.

(Effects of the Invention) As described above, the present invention provides an engine-driven heat pump device in which an engine and a compressor driven by the engine are housed in a housing, in which the bottom of the housing is connected to the engine support disposed inside. It is composed of a corrugated plate for use in the building, a shielding plate disposed below the corrugated plate with a space in between, and a sound absorbing member 14 inserted into the space between the two plates.Therefore, the corrugated plate is Since the self-portrait has great rigidity, it does not cause unnecessary addition of 3% (!it Jl) and improves flexibility. Since there is no angle (A, etc.), there is no vibration propagation to the shielding plate side, and the space between the two plates is filled with sound absorbing material, so there is no chance of leakage from the bottom of the jigs. It is possible to reliably prevent noise caused by engine vibration and the like.

[Brief explanation of drawings]

FIG. 1 is a partially sectioned or removed front view of an engine-driven heat pump device having a soundproof housing structure according to the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a plan view of the corrugated plate of the housing. Fig. 4 is a perspective view of the lowermost sound absorbing material used in the same structure, Fig. 5 is a perspective view showing another embodiment of the same sound absorbing material, and Fig. 6 is a soundproofing material according to another embodiment of the present invention. FIG. 7 is a front view showing an engine-driven heat pump device having a housing structure with a portion cut away or removed, and FIG. 7 is a side view of the same. 1 engine, 2-=-compressor, 9=-housing, 6-corrugated plate, 16-shielding plate, 17. 20-Sound absorption +4, 18.2L-Intake passage, 19-
Intake ``1, 22-skirt. Fig. 2 ．． , , , -, , =, , -102/-5
'9'''- Figure 6 Fishing Figure 7

Claims (1)

[Claims] In an engine-driven heat pump device in which an engine and a compressor driven by the engine are housed in a housing,
The bottom of the housing is made up of a corrugated plate for supporting the engine disposed inside, a shielding plate disposed below the corrugated plate with a space in between, and a sound absorbing material inserted into the space between the two plates. A soundproof housing structure for an engine-driven heat pump device, characterized by comprising: