JP2010255975A - Metal frame for pipe shaft installation of heat source machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a metal frame for pipe shaft installation of a heat source machine especially equipped with a vibration isolation mechanism. <P>SOLUTION: The pipe shaft installation metal frame 1 with the vibration isolation mechanism is equipped with, as main components, a metal frame body 1a composed of an upper frame 2, right/left vertical frames 3, a lower frame 4 and a lower frame reinforcement member 5, and a vibration isolation mechanism part 6 mounted inside the right/left vertical frames 3 of the metal frame body 1a. The vibration isolation mechanism part 6 is composed of an upper member 61, a lower member 62, and a vibration absorber 63 intervening between the both. The lower member 62 is not fixed to the heat source machine 7 but fixed to only the metal frame body 1a. The upper member 61 is not fixed to the metal frame body 1a but fixed to only the heat source machine 7. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a metal frame for installing a pipe shaft of a heat source machine, and more particularly to a metal frame for installing a pipe shaft of a heat source machine equipped with a vibration isolation mechanism.

Conventionally, in condominiums such as condominiums, it has been common to install a heat source unit on a pipe shaft (hereinafter sometimes abbreviated as PS) from the viewpoint of effective use of dead space, and many proposals have been made for its installation methods. (For example, Patent Document 1). As a standard installation method 100, as shown in FIG. 15, the mounting frame 102 is fixed to the mounting bracket 101a provided on the PS outer frame 101, and the mounting bracket 103a provided at the four corners of the heat source unit 103 on the mounting frame 102. Is done by fixing.
However, in such a fixing method, since the heat source device 103 and the PS outer frame 101 are directly fixed, vibrations of a fan, a pump, etc. during operation are transmitted to the PS outer frame 101 and further to the building frame. Therefore, vibration and noise in the dwelling unit become a problem. In order to prevent this, a measure for reducing vibration transmission by reinforcing or inserting an insulating material in the building structure is adopted, but the present situation is that a reduction effect commensurate with the cost has not been obtained.
Furthermore, in recent years, for the purpose of reducing construction costs, there are many examples of using a lightweight ALC plate as a pipe shaft structural material, and vibration and noise are further problematic.
As a measure to improve the vibration isolation performance, there is a method of installing the heat source unit on the vibration isolation frame, but it is limited to the installation of a veranda etc. because it does not fit in the PS, so the advantage of installing the heat source unit PS is effective use of dead space. It will be damaged.
Further, as shown in FIG. 16 (a), the heat source machine is in the state of being pulled by the PS outer frame with the tension T in the hanging portion A to the PS outer frame, but as shown in FIG. 16 (c). On the contrary, the mounting frame is in a state of being pulled with a tension T from the heat source machine. For this reason, there is also a problem that the mounting frame easily tilts backward as a unit with the heat source device due to the tension horizontal component Th.

Japanese Patent Laid-Open No. 7-229651

An object of the present invention is to reduce vibration during operation of a PS installation type heat source machine and to eliminate noise problems due to vibration.
It is another object of the present invention to prevent the heat source device from tilting backward and improve the stability of installation.

The present invention has been made to solve the above-mentioned problems, and has the following contents. That is, the metal frame for installing the pipe shaft with the vibration proofing mechanism according to the present invention is
(1) A pipe shaft installation metal frame for installing the heat source machine on the pipe shaft outer frame,
The metal frame main body includes an upper frame, left and right vertical frames, and a lower frame, and the vibration isolation mechanism unit is provided for each vertical frame. Arranged at the lower end on the inner surface side, comprising an upper member, a lower member, and a vibration absorber, configured to fasten the lower member and the upper member via the vibration absorber, and comprising: The lower member is fixed only to the metal frame main body without being fixed to the heat source machine, and the upper member is fixed only to the heat source machine without being fixed to the metal frame main body. To do.

(2) In the above invention, the depth length of the lower end is configured so that the point of action of the heat source machine load on the lower member is at least the inner position of the lower end of the vertical frame. .
According to the present invention, as shown in FIG. 16 (b), the load W of the heat source machine is applied to the action point P of the lower member fixed to the vertical frame. Located inside. Accordingly, the vertical frame is supported by the PS outer frame with the tension T ′ and the drag R ′ at the contact surface between the hanging portion A and the PS outer frame. Further, as shown in FIG. 5C, the attachment frame is in a state of being pulled by the heat source machine with the tension T ′ in the hanging portion A. In this case, since the angle θ ′ between T ′ and the vertical plane is smaller than the angle θ in the case of the conventional mounting frame, the force for tilting the mounting frame backward (tension horizontal component Th ′) is small. The heat source machine can maintain an upright state.
Note that the length of the upper end of the vertical frame can be arbitrarily selected, but it is desirable to have a trapezoidal shape with the upper end width <the lower end width in order to reduce the weight of the metal frame main body.
The lower end length may theoretically be equal to or longer than the length at which the action point P is located on the inner side of the lower end portion. However, the anti-vibration mechanism portion including the upper member to which the heat source unit is fixed is also accommodated on the inner side. It is desirable that

(3) In each of the above-mentioned inventions, the upper frame, the vertical frame, and the lower frame are each provided with a seal member that is in close contact with the flange back side of the heat source unit in a heat source unit installed state.
According to the present invention, since the PS internal space and the heat source device can be partitioned, the air inside the PS is not sucked and is not exhausted into the PS. For this reason, it does not conflict with the regulations under the Fire Service Law.

(4) In each of the above inventions, the upper frame is provided with a steadying member for suppressing a shake in the front-rear direction when the heat source device is installed.
ADVANTAGE OF THE INVENTION According to this invention, the vibration of the front-back direction of the heat source machine currently fixed only to the upper member of a vertical frame lower end part can be prevented.

According to the present invention, since the heat source machine and the pipe shaft outer frame are connected via the vibration absorber, the vibration of the heat source machine is not directly transmitted to the metal frame, and the vibration and noise on the building side are reduced. Is feasible.
In addition, in the invention in which the depth of the lower end is configured so that the point of action on the lower member of the heat source machine load is at least the lower end inside position of the vertical frame, it is compared with the conventional mounting frame. And since the tension | tensile_strength horizontal component concerning a mounting metal frame is small, it can prevent that a heat-source machine inclines back.
Moreover, in the invention in which the seal member is attached to the portion in contact with the heat source machine flange around the inner side of the metal frame, since the air flow between the PS space and the heat source machine can be blocked, it is possible to clear the regulations under the Fire Service Act. it can.

It is a figure which shows the aspect of the whole structure of the metal frame 1 for pipe shaft installation with an anti-vibration mechanism which concerns on one Embodiment of this invention, and the attachment to PS. It is a figure which shows the upper frame 2 which is a component of the metal frame main body 1a. It is a figure which shows the same vertical frame 3. FIG. It is a figure which shows the state which fixed the anti-vibration mechanism part 6 to the vertical frame 3. FIG. It is a figure which shows the lower frame 4 and the reinforcement member 5. FIG. FIG. 3 is a diagram illustrating an overall configuration of a vibration isolation mechanism unit 6. It is a figure which shows the cross-sectional structure of the anti-vibration mechanism part 6. FIG. 4 is a development view of a vibration absorber 63. FIG. It is a figure which shows the external appearance structure of the heat-source equipment. It is a figure which shows the state which attached the anti-vibration mechanism part 6 to the heat-source equipment 7. FIG. It is sectional drawing which shows the state which attached the heat-source equipment 7 to the metal frame 1 for PS installation. It is sectional drawing which shows the attachment details of the heat-source equipment 7 in PS metal frame 1 upper part. It is a figure which shows the attachment state of the sealing member. It is a figure which shows the outline | summary of the testing apparatus for heat-source equipment vibration proof performance evaluation. It is a graph which shows a heat-source apparatus vibration-proof performance evaluation result. It is a figure which shows the conventional pipe shaft installation method 100. FIG. It is the figure which compared the load support form of the conventional type and this invention type.

  Hereinafter, an embodiment of a metal frame for installing a pipe shaft with an anti-vibration mechanism according to the present invention will be described in more detail with reference to FIGS. In order to avoid redundant description, the same reference numerals are used for the same components in the drawings. Needless to say, the scope of the present invention is described in the claims and is not limited to the following embodiments.

Referring to FIGS. 1 and 2, a pipe shaft installation metal frame 1 with an anti-vibration mechanism is composed of an upper frame 2, left and right vertical frames 3, a lower frame 4, and a lower frame reinforcing member 5. A frame main body 1a and an anti-vibration mechanism 6 attached inside the left and right vertical frames 3 of the metal frame main body 1a are provided as main components.
Referring to FIG. 2, the upper frame 2 has an L-shaped cross section, and the folded portion 2 a is provided with a long hole 2 b that is suspended from a PS outer frame 8 described later. A backrest member 2e, which will be described later, is provided on the back side of the horizontal portion 2c, and a seal member 10c is attached to the front surface thereof.
Referring to FIG. 3 (a), the vertical frame 3 has a trapezoidal shape with an upper end width <lower end width, a folded portion 3a is provided on the front surface side, and a folded portion 3b is provided on the lower end portion. . A pedestal 3 c for fixing the lower frame 4 is provided on the lower front side of the vertical frame 3. Further, a plurality of fixing screw holes 3d for fixing the vibration isolation mechanism 6 are provided on the lower back side. A screw hole 3e for fixing the mounting portion 8b provided in the PS outer frame 8 is provided in the folded portion 3a. A seal member 10b is attached in the central portion in the vertical direction.

The lower end part of the metal frame main body 1a is constituted by a lower frame 4 on the front side and a lower frame reinforcing member 5 on the back side, and the central part is a space in order to secure a heat source machine piping space. Referring to FIG. 4, the lower frame 4 has an L-shaped cross section, and a seal member 10 c is attached to the step portion. The lower frame 4 and the lower frame reinforcing member 5 are fixed to the left and right vertical frames 3, respectively.
In addition, although illustration is abbreviate | omitted, each frame body which comprises the metal frame main body 1a is provided with the screw hole for enabling it to fix mutually. Further, the seal members 10a to 10c provided on each frame are arranged at positions on the same plane when the metal frame main body 1a is assembled, as will be described later.

Next, referring to FIG. 5, the vibration isolation mechanism 6 includes an upper member 61, a lower member 62, and a vibration absorber 63 interposed therebetween. The upper member 61 is configured to have an L-shaped cross section by a heat source device fixing portion 61a and a heat source device mounting portion 61b. Screw holes 61e for fixing the heat source unit are provided at both ends of the heat source unit fixing part 61a. Further, heat source device mounting portions 61c having screw holes 61d are provided at both ends of the heat source device mounting portion 61b.
The lower member 62 includes a vibration absorber mounting portion 62a for mounting the vibration absorber 63, a vertical frame fixing portion 62b fixed to the vertical frame 3, and brackets 62c and 62d for supporting a heat source machine load. It is equipped with. Referring also to FIG. 9, the vertical frame fixing portion 62 b is provided with four screw holes 62 e for fixing the vibration absorber 63 to the vertical frame 3.

Referring to FIGS. 6 and 7, the vibration absorber 63 is composed of an inner sleeve-like elastic body 63b for absorbing vibration in the lateral direction and an outer spring-loaded elastic body 63a for absorbing vibration in the vertical direction. It is composed of a heavy structure. The upper member 61 and the lower member 62 are fixed as follows through the vibration absorber 63. A metal washer 63d and a spring-loaded elastic body 63a are disposed between the upper member 61 and the lower member 62, and a rubber washer 63e and a metal washer 63f are disposed below the lower member 62. Bolts 63c welded to the heat source device mounting portion 61b are inserted into these and fastened and fixed by the dual nuts 63g. The bolt 63c is covered with a sleeve-like elastic body 63b.

The PS installation metal frame 1 is configured as described above. Next, the PS installation metal frame 1 is fixed to the heat source unit 7 and the PS installation metal frame 1 is fixed to the PS outer frame 8. explain.
(A) Fixing of anti-vibration mechanism 6 to heat source unit 7 Referring to FIG. 8, the housing of the heat source unit 7 used in the present embodiment is screwed to the main body 7a and the front cover 7b with flange portions 7e and 7f. Fixed and configured. The upper surface of the main body 7a is provided with a wall mounting bracket 7c, and a mounting bracket 7d and a screw hole 7g for mounting a base are provided respectively at the front and rear ends of the lower end. These are originally arranged as standard construction members, but in this embodiment, these standard construction members are used to fix the heat source unit 7 to the PS installation metal frame 1.
Referring to FIG. 9, the screw holes 61 d and 61 e on the upper member 61 side, the mounting bracket 7 d on the heat source device 7 side, and the screw hole 7 g are aligned and fixed with screws. Thereby, the anti-vibration mechanism 6 and the heat source unit 7 are integrated.

(B) Fixing the PS installation metal frame 1 to the heat source device 7 Next, the left and right vertical frames 3 are attached to the vibration isolation mechanism 6 integrated with the heat source device 7. Both are fixed by screw fixing by combining the screw hole 62e provided in the vertical frame fixing portion 62b of the vibration isolation mechanism 6 and the fixing screw hole 3d of the vertical frame 3 (FIG. 3B). )reference). Furthermore, by fixing the upper frame 2, the lower frame 4, and the lower frame reinforcing member 5 to the vertical frame 3, the PS installation metal frame 1 and the heat source device 7 are integrated. At this time, referring to FIG. 10 or FIG. 12, the seal members 10a to 10b attached to the respective frames are arranged on the same plane and are in close contact with the flange portion 7f of the heat source unit 7 (not shown). .
10 and 11, in a state in which the metal frame 1 is fixed to the heat source device 7, the steadying member 2e of the upper frame 2 is connected to the back side flange portion 7f of the heat source device 7 and the wall mounting bracket 7c. It is in a position fitted in between. Thereby, the shake | fluctuation to the front-back direction of the heat-source equipment 7 can be prevented.

(C) Fixing the PS installation metal frame 1 to the PS outer frame 8 Referring to FIG. 1, a hook 8 a for attaching a heat source device is provided at the center of the upper frame of the outer frame 8, and inside the left and right vertical frames. Are provided with attachment portions 8b and 8c for attachment. The long hole 2 b provided in the upper frame 2 of the metal frame 1 integrated with the heat source machine is hooked on the hook 8 a of the PS outer frame 8, and the PS installation metal frame 1 is suspended from the PS outer frame 8. In this state, the screw holes 3e provided in the vertical frame 3 are aligned with the positions of the mounting portions 8b and 8c, and screws are fixed. Thus, the PS installation of the PS installation metal frame 1 with the vibration mechanism integrated with the heat source unit is completed.
After the installation is completed, the heat source unit 7 is concealed except for the exhaust tube 7h by closing a door (not shown) attached to the PS outer frame 8.

In order to confirm the effect of the present invention, the anti-vibration mechanism-attached PS installation metal frame was attached to the PS outer frame, and the anti-vibration performance during the heating operation of the heat source machine (hot water heater) was evaluated. For comparison, evaluation by conventional PS installation was also performed.
(1) Test apparatus and measurement method A standard hot water heater / heater (hot water: 2.7 to 24, heating: 2.67 to 14.0 kW, memorial: 9.88 kW) with a vibration isolating mechanism according to the present invention. Attached to the PS installation metal frame, as shown in FIG. 13, vibration sensors (accelerometers) are arranged on the left and right sides (total of 12 locations) in the height direction of the PS outer frame side surface, and the frequency is different for each heating operation. The acceleration (m / s2) was measured.

(2) Measurement Result FIG. 14 is a diagram showing the maximum acceleration value at each measurement position of the present invention type and the conventional type. From this, it can be seen that the acceleration value of the present invention type is smaller than that of the conventional type at all positions. In particular, at the position (measurement position 4 to 6) corresponding to the lower part of the device in which the pump and fan as the vibration source are stored, the acceleration value at the maximum vibration position is reduced to about 1/2 to 1/3. This shows that the effect of the present invention is high.

  The present invention can be widely applied not only as a gas heat source machine but also as a metal frame for installing a pipe shaft for heavy equipment incorporating a vibration source.

DESCRIPTION OF SYMBOLS 1 ...... Metal frame 1a ... Metal frame body 2 ... Upper frame 3 ... Vertical frame 4 ... Lower frame 5 ... Pipe frame (PS) installation vibration-proof mechanism · Reinforcement member 6 · · · Vibration isolation mechanism 61 · · · Upper member 62 · · · Lower member 63 · · · Vibration absorber 7 · · · Heat source device 8 · · · Outer frame 10a to 10c · ..Seal members

Claims (4)

A pipe shaft installation metal frame for installing a heat source machine on the pipe shaft outer frame,
Comprising a metal frame body and a vibration isolation mechanism,
The metal frame main body includes an upper frame, left and right vertical frames, and a lower frame,
The vibration isolation mechanism is disposed at the lower end on the inner surface side of each vertical frame,
An upper member, a lower member, and a vibration absorber, configured to fasten the lower member and the upper member via the vibration absorber, and
The lower member is fixed only to the metal frame body without being fixed to the heat source machine,
The upper member is fixed only to the heat source machine without being fixed to the metal frame body,
A metal frame for installing a pipe shaft with an anti-vibration mechanism. 2. The pipe according to claim 1, wherein a depth length of the lower end portion is configured so that an action point of the heat source machine load on the lower member is at least an inner position of the lower end portion of the vertical frame. Metal frame for shaft installation. 3. The pipe shaft installation according to claim 1, wherein a seal member that is in close contact with a flange rear side of the heat source device is attached to the upper frame, the vertical frame, and the lower frame in a heat source device installation state. Gold frame. The pipe frame installation metal frame according to any one of claims 1 to 3, wherein the upper frame includes an anti-sway member for suppressing vibration in the front-rear direction in a heat source device installation state.

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