JP5043075B2 - Anti-vibration device for heat source wall installation - Google Patents

Description

  The present invention relates to a vibration isolator for wall surface installation of a heat source machine, and particularly relates to a vibration isolator for wall surface installation having high vibration isolation performance and excellent piping workability.

Conventionally, when heavy equipment including a vibration source, such as a water heater or a heat source machine, is installed on a wall surface, noise generation due to vibration has been a problem. In particular, in housing complexes and the like, it is necessary to perform construction for fixing the wall fastening member to the upper and lower slabs in order to prevent vibration, which is a factor in increasing costs.
Furthermore, in recent years, for the purpose of reducing construction costs, there are many examples of using lightweight ALC plates as the wall structure material of apartment houses, and vibration and noise have become more problematic. In this case, if a heat source device is installed on the vibration isolation stand, the vibration isolation performance is ensured, but it is not general because of high cost.
As a vibration-proof measure for such a vibration source wall surface installation, the wall hanging bracket that fixes the upper and lower parts of the device is bolted to the wall surface with the seated bush and the holding ring as the vibration damping member, There has been proposed a technique for absorbing vibrations of a transmitted device with a seated bush and a presser ring (for example, see Patent Document 1).
However, the fixing bolt as the support is tightened in the direction perpendicular to the wall surface, whereas the line of gravity acting on the equipment is parallel to the wall surface, and therefore the vibration isolation member is uneven due to the moment. There is a problem that a load is applied and the vibration reduction effect cannot be fully exhibited. Furthermore, since both the compression force and the shearing force act on the vibration-proof rubber, the device tilts forward, and it is difficult to design the support and the vibration-proof material so that the device is vertically upright at the balanced position.

In order to solve the above-mentioned problem, the applicant of the present invention has a wall hanging structure in which a vibration isolating material is always inserted into a path supporting a static load so that the wall cannot be reached from the device through only a rigid structure. The vibration isolator 100 is proposed (see Patent Document 2).
As shown in FIG. 13, in the wall-mounted vibration isolator 100, the action line L <b> 1 of the central axis of the support member 102 passes through the projection point G on the vertical plane of the center of gravity of the water heater 103 with respect to the upper vibration-proof support portion 101. Are arranged as follows. In addition, with respect to the vibration isolating support portion 104, the action line L2 of the central axis of the support member 105 is disposed so as to be perpendicular (horizontal direction) to the wall surface and pass through the projection point G on the vertical plane of the center of gravity of the water heater 103. ing.

JP 2000-329190 A JP 2007-315407 A

With this configuration, in the wall-mounted vibration isolator 100, the moment around the center of gravity is zero, and the vibration isolating material is uniformly compressed or stretched only in the support direction, so that a material weak against shearing force can be used as the vibration isolating material. In addition, the durability of the vibration-proof material can be improved.
However, the types of heat source equipment include hot water supply, heating, retreat, and a combination of these, and in the case of a water heater, the number of connecting pipes is usually constant, so the center of gravity position is relatively small. -In the case of a heat source machine including a memorial system, the number of systems varies, so there is a problem that the position of the center of gravity changes for each model. Moreover, since the structure is somewhat complicated, there is also a problem in terms of manufacturing cost.

As a result of diligent research, the present applicants devised a wall-mounted vibration isolator that can solve the above-mentioned problems and ensure high vibration isolation performance, and can reduce the labor and manufacturing cost of construction, and confirm it by tests. To complete the invention.
The gist of the present invention is as follows. That is, the vibration isolator for wall installation according to the present invention is
(1) A vibration isolator for wall surface installation for installing a heat source device on a wall surface, and comprising an upper support, a lower support, and an anti-vibration mechanism interposed between the upper support and the lower support. And a pair of L-angle members having a wall surface fixing portion disposed in a direction parallel to the wall surface, a vibration isolation mechanism mounting portion disposed in the horizontal direction, and a first vibration isolation mechanism fixing portion. The upper support includes a second vibration isolation mechanism fixing portion and a heat source device fixing portion, and the vibration isolation mechanism portion includes a lower member, an upper member, and a lower member. The lower support is fixed to the wall surface without being directly connected to the heat source device, and the first angle prevention member of the L angle member is provided. The lower member of the vibration isolation mechanism unit is fixed at the vibration mechanism fixing unit, the upper support member fixes the heat source unit without being fixed to the wall surface, and Fixing the upper member of the vibration isolating mechanism in the second vibration isolating mechanism fixing unit, characterized by being configured.

According to the present invention, the upper support is connected to the heat source device on the upper surface side and is connected to the upper member of the vibration isolation mechanism portion on the lower surface side. On the other hand, the lower support is connected to the lower member of the vibration isolation mechanism portion on the upper surface side, and is connected to the L angle member fixed to the wall surface on the lower surface side. Furthermore, the upper member and the lower member of the vibration isolation mechanism are connected via a vibration absorber. With such a configuration, the vibration of the heat source device can be prevented from being absorbed by the vibration absorber and propagating to the wall surface.
Furthermore, since the load of the heat source device is applied to the vibration absorber in the vertical direction, a non-uniform load is not applied to the vibration absorber and the effect of reducing vibration can be sufficiently exhibited.

(2) An insulating member for preventing contact between both supports is further provided between the bottom surface of the upper support and the top surface of the lower support.
According to the present invention, since both the supports are arranged via the insulating member, the vibration of the upper support directly connected to the heat source device is absorbed by the insulating member, and the vibration directly propagates to the lower support. Can be prevented. Note that it is necessary to use a material having a property of absorbing vibration as the insulating member. For example, EPDM rubber foam can be used.

(3) The upper support and the lower support further include a pipe cover member that covers at least the front surface and both side surfaces, respectively.

According to the present invention, since the structure is such that the load of the heat source device is received by the bottom surface portion (vibration isolation mechanism mounting portion of the L angle member), uneven load on the vibration isolation member due to the influence of the moment can be prevented, Compared with the conventional vibration isolator for wall installation, the vibration can be greatly reduced.
Moreover, since it is not influenced by the gravity center position change of a heat source machine, there also exists an advantage that it can utilize universally irrespective of a heat source machine type.
In addition, since the vibration isolation mechanism portions are arranged at both ends of the lower support, piping construction can be facilitated without interference of piping at the bottom of the heat source unit.
Further, in the invention using the pipe cover member for the upper support and the lower support, since it has both a vibration isolation mechanism and a pipe cover function as compared with the case where the heat source unit is installed on the vibration isolation rack. This makes it possible to significantly reduce the labor and manufacturing cost of construction.

It is a figure which shows the whole structure of the vibration isolator for wall surface installation 1 which concerns on one Embodiment of this invention. It is a figure which shows the installation aspect (front surface) to the wall surface of the vibration isolator. It is a figure which shows the same (side surface). FIG. 3 is a diagram showing a configuration of a lower support 3. It is a figure which shows the structure of the L angle member. FIG. 3 is a diagram showing a configuration of an upper support 2. It is a figure which shows the inner side structure of the side surface panel 22 of the upper side support body 2. As shown in FIG. FIG. 3 is a diagram illustrating a configuration of a vibration isolation mechanism unit 4. 4 is a development view of a vibration absorber 43. FIG. FIG. 6 is a diagram illustrating a configuration of a shake prevention mechanism 7. FIG. 6 is a development view of the shake prevention mechanism 7. It is a figure which shows the connection aspect to the lower side support body 3 of the anti-vibration mechanism part 4. FIG. It is a figure which shows the cross-sectional structure. It is a figure which shows the connection aspect of the lower side support body 3 and the upper side support body 2. FIG. It is a figure which shows the connection aspect to the vibration isolator 1 of the heat source machine 6. FIG. It is a sound pressure level frequency characteristic comparison chart at the time of heat source machine operation by a vibration isolator type. It is a vibration acceleration frequency characteristic comparison chart at the time of heat source machine operation by a vibration isolator type. It is a figure which shows the conventional wall hanging vibration isolator 100. FIG.

Hereinafter, an embodiment of a vibration isolator for wall surface installation according to the present invention will be described in more detail with reference to FIGS. In order to avoid redundant description, the same components are denoted by the same reference numerals in the respective drawings. Needless to say, the scope of the present invention is described in the claims and is not limited to the following embodiments.
<Configuration of vibration isolator 1>

With reference to FIG. 1, a vibration isolator 1 for wall surface installation includes an upper support 2, a lower support 3, an anti-vibration mechanism unit 4 interposed between the upper support and the lower support, Insulating members 5 a and 5 b interposed between the upper support 2 and the lower support 3 and a shake prevention mechanism 7 provided at the upper back of the heat source device 6 are provided as main components.

Referring to FIG. 4A, the lower support 3 is disposed inside the front panel 31 and the left and right side panels 32, the upper and lower stays 34 and 35 on the back side, and the side panels 32, and is fixed to the wall surface. And a pair of L-angle members 33. The front and side surfaces are shielded by each panel, and the top, bottom and back surfaces are open. Adjacent panels and stays cover the L angle member 33 and are fixed with screws, and the inside is formed in a hollow box shape as a whole. With such a configuration, the lower support 3 is maintained in its aesthetic appearance by the front panel 31 and the side panel 32 that function as a piping cover. Furthermore, since the L angle member 33 is attached to the side panel 32, the internal space is configured to be usable as a piping space.
Referring to FIG. 4B, the L angle member 33 includes a wall surface fixing portion 33a provided in a direction parallel to the wall surface, and a pedestal portion 33b provided in the horizontal direction for mounting the vibration isolation mechanism portion 4. 33c and a vibration isolation mechanism fixing portion 33e provided in a direction perpendicular to these. A channel portion 33d is formed between the both pedestal portions, and is configured so that the fitting portion 42b of the vibration isolation mechanism portion 4 can be fitted as will be described later. The wall surface fixing portion 33a is provided with a pair of bolt holes 33f for penetrating the bolts, and the vibration isolation mechanism fixing portion 33e is provided with a pair of screw holes 33g for attaching the vibration isolation mechanism.

Next, referring to FIG. 5 (a), the upper support 2 includes a front panel 21, which functions as a piping cover, left and right side panels 22 and a rear panel 23, and upper and lower stays 24 and 25. It is configured. With the above configuration, the upper support 2 is formed in a box shape in which the front, back, and side surfaces are shielded and the top and bottom surfaces are opened by fixing screws between adjacent panels and stays. The front panel 21 is easy to be removed during maintenance such as draining, and the folded portion 21b is placed on the horizontal plane of the lower stay 25, and the screw hole 21a and the screw hole 24a of the upper stay 24 are aligned to fix the screw. It is configured to be possible.
Referring to FIG. 5B, a reinforcing plate 26 is spot welded inside the side panel 22. A pedestal portion 26a for placing the bottom surface of the heat source device is provided on the upper side of the reinforcing plate 26, and a folded portion 26c for storing the insulating member 5b is provided on the lower side. Four screw holes 26b for attaching the vibration isolating mechanism 4 are provided in the upper part of the folded portion 26c.

Next, referring to FIG. 6A, the vibration isolation mechanism unit 4 is configured by an upper member 41, a lower member 42, and a vibration absorber 43 interposed therebetween. Both ends of the upper member 41 are configured to have an L-shaped cross section by an attachment portion 41 a fixed to the reinforcing plate 26 of the upper support 2 and a pedestal portion 41 b sandwiched between intermediate portions of the vibration absorber 43. Both ends of the pedestal portion 41b are reinforced by brackets 41c and 41d constituting the attachment portion 41a. A pair of screw holes 41e for fixing the reinforcing plate 26 are provided at the center of the mounting portion 41a.
The lower member 42 includes vibration absorber pedestal portions 42a at both ends, a fitting portion 42b that fits into the channel portion 33d of the central angle member 33, and a vibration isolation mechanism fixing portion 33e of the angle member 33 at the central lower end portion. It is comprised by the attaching part 42c. The mounting portion 42c is provided with a bolt hole 42d for fixing to the vibration isolation mechanism fixing portion 33e.

Next, referring to FIG. 6B, the vibration absorber 43 includes an inner sleeve-like elastic body 43b for absorbing vibration in the lateral direction and an outer spring-loaded elastic body 43a for absorbing vibration in the vertical direction. The double structure is configured. Both pedestals 41 b and 42 a of the upper member 41 and the lower member 42 are fixedly connected through the vibration absorber 43 as follows. A metal washer 43d and a spring-loaded elastic body 43a are disposed between both pedestal portions, and a rubber washer 43e and a metal washer 43f are disposed above the pedestal portion 41b. A bolt 43c covering the sleeve-like elastic body 43b is inserted into these elements and fastened and fixed by a double nut 43g. The bolt 43c is welded to the pedestal portion 42a.

Next, referring to FIGS. 7 (a) and 7 (b), the shake prevention mechanism 7 includes a wall fixing bracket 7a that is attached to the uppermost back surface of the heat source unit 6 as a standard, and a fixing bracket 7a. The vibration absorbing elastic bodies 7b and 7c are arranged. The shake prevention mechanism 7 is installed as follows. Metal washers 7e and 7f and an elastic body 7b are arranged on the heat source device side of the fixture 7a, and an elastic body 7c is arranged on the wall surface side. An anchor screw 7d is inserted into each of these components and embedded in the wall surface 10.

<Installation of vibration isolator 1>
The wall-mounted installation vibration isolator 1 is configured as described above. Next, the connection relationship of each component and the installation form on the wall surface will be described. Installation can be performed according to the following steps.
(A) First, the vibration isolation mechanism 4 is attached to the lower support 3. (B) Next, the lower support 3 and the upper support 2 are integrally connected to form the vibration isolator 1. (C) Next, the heat source device 6 is attached to the integrated vibration isolator 1. (D) Finally, the vibration isolator 1 integrated with the heat source device is attached to the wall surface. Details of each step will be described below.
(A) Fixing of vibration isolation mechanism 4 to lower support 3 Referring to FIGS. 8A and 8B, the lower side of vibration isolation mechanism 4 is attached to pedestals 33 b and 33 c of angle member 33. The member base part 42a is placed, and the fitting part 42b is fitted into the channel part 33d, and the attachment part 42c is screw-fixed to the vibration isolation mechanism fixing part 33e.

(B) Formation of Vibration Isolator 1 Referring to FIGS. 8B and 9, next, the lower support 3 and the upper support 2 are integrally connected to form the vibration isolator 1. Specifically, the vibration absorbing insulating members 5a and 5b are placed on each panel of the lower support 3 or the folded portion of the stay, and the bottom surface of the upper support 2 is placed thereon. As the insulating members 5a and 5b, EPDM rubber foam can be used.
Referring also to FIGS. 5B and 6A, in this state, the screw hole 26b provided in the reinforcing plate 26 integral with the side panel 22 and the attachment portion 41a of the vibration isolation mechanism portion 4 are provided. The screw holes 41e are fixed together with screws. The vibration isolator 1 is formed by the above process.

(C) Attaching the heat source device 6 to the vibration isolator 1 Next, the heat source device 6 is attached to the vibration isolator 1. Referring to FIG. 10, the connection between the two places the bottom of the heat source unit 6 on the heat source unit base 26 a provided on the reinforcing plate 26, and fixes the screw holes 22 a and 24 b of the side panel 22 and the stay 24 to the heat source unit. The screw holes 6b and 6a can be aligned and fixed with screws.

(D) Wall surface installation of vibration isolator-equipped heat source unit Referring to FIGS. 2 and 3, prior to installation, the hair bolt 13 is attached through the wall surface 10 from the indoor side. The bolt 13 is passed through the bolt hole 33f of the angle member 33 of the vibration isolator 1 integrated with the heat source device 6, and fixed with a nut. With the heat source device 6 fixed to the vibration isolator 1, the heat source device 6 is attached to the wall surface 10 using the shake preventing mechanism 7. Thereby, the vibration to the front-back direction can be prevented, preventing the vibration during operation of the heat source unit 6.
After completion of fixing the heat source device 6 and the vibration isolator 1 to the wall surface 10, the pipes 14 that pass through the wall surface 10 in advance and are taken out to the outside are connected to the corresponding piping ports of the heat source device 10 to complete the installation. To do. In FIG. 3, only two pipes are illustrated.

  In addition, in this embodiment, although the example which attaches to a wall surface after attaching the heat source machine and the vibration isolator 1 integrally was shown, the L angle member of the lower side support body 3 was first fixed to a wall surface, and then, sequentially, It is good also as a form which attaches the anti-vibration mechanism part 4, the upper side support body 2, and the heat-source equipment 6, and fixes the heat-source equipment 6 to a wall surface finally with the anti-vibration mechanism 2e.

  In order to confirm the effect of the present invention, a heat source machine (hot water heater) equipped with the vibration isolator according to the present invention was installed on the ALC wall surface, and noise and vibration (acceleration) during operation were measured. For comparison, evaluation using a conventional type vibration isolator (commercially available product (manufactured by N company) and the same type as in FIG. 13) was also performed.

(1) Test apparatus and measurement method Table 1 shows the measurement conditions.

(2) Measurement Results (a) Noise Level FIG. 11 shows a comparison of sound pressure level frequency characteristics with each vibration isolator. Table 2 shows the comparison results of hearing and noise level. From these, it can be seen that the type of the present invention is less noise than the conventional type.
In the conventional type, the sound pressure peak value at 100 Hz was about 50 dB, but in the type of the present invention, it was about 30 dB, which was reduced by about 20 dB. This result is consistent with the results shown in Table 2, and in the audibility test conducted on five subjects, the noise of around 100 Hz was heard on the ear in the conventional type, but it was not heard at all in the present invention type. evaluated. Further, the average value of the noise level obtained by setting the sound to the frequency weighting characteristic A is also reduced by about 4 dB.

(A) Vibration damping comparison FIG. 12 shows a comparison of frequency characteristics of vibration acceleration by each vibration isolator. The value on the vertical axis represents the vibration acceleration level obtained by logarithmically measuring acceleration. It can be seen that the present invention type has a particularly low value in the vicinity of 100 Hz (circulation pump natural frequency), which is a problem, as compared with the conventional type, and has a high vibration reduction effect.

  The present invention can be widely applied not only as a gas heat source device but also as a vibration isolator for wall surface installation for heavy equipment incorporating a vibration source.

DESCRIPTION OF SYMBOLS 1 ...... Vibration isolation device 2 ... Upper support 21 ... (Upper support) Front panel 22 ... (Upper support) Side panels 24, 25 ... (Upper support) Body) Stay 26 ... Reinforcing plate 3 ... Lower support 31 ... (Lower support) Front panel 32 ... (Lower support) Side panel 33 ... Angle member 34, 35 ... (lower support) stay 4 ... vibration isolation mechanism 41 ... upper member 42 ... lower member 43 ... vibration absorbers 5a, 5b ... insulation for vibration absorption Member 6 ... Heat source device 7 ... Shake prevention mechanism 10 ... Wall 13 ... Hairpin

Claims (3)

A vibration isolator for wall surface installation for installing a heat source machine on a wall surface,
An upper support, a lower support, and an anti-vibration mechanism portion interposed between the upper support and the lower support,
The lower support body has a pair of L angles each having a wall surface fixing portion arranged in a direction parallel to the wall surface, a vibration isolation mechanism mounting portion arranged in a horizontal direction, and a first vibration isolation mechanism fixing portion. A member is provided at both upper ends,
The upper support includes a second vibration isolation mechanism fixing part, and a heat source machine fixing part,
The vibration isolation mechanism includes a lower member, an upper member, and a vibration absorber interposed between the lower member and the upper member.
The lower support is fixed to the wall surface without being directly connected to the heat source device, and the lower member of the vibration isolation mechanism is fixed to the first vibration isolation mechanism fixing portion of the L angle member,
The upper support body fixes the heat source machine without being fixed to the wall surface, and fixes the upper member of the vibration isolation mechanism section in the second vibration isolation mechanism fixing section.
An anti-vibration device for wall surface installation, characterized by being configured as described above. 2. The vibration isolator for wall surface installation according to claim 1, further comprising an insulating member for preventing contact between the upper support bottom surface and the lower support upper surface. . 3. The vibration isolator for wall surface installation according to claim 1, wherein each of the upper support and the lower support further includes a pipe cover member that covers at least the front surface and both side surfaces, respectively.

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