JP3975288B2 - Soundproofing device for liquid tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a soundproofing device installed in a liquid tank having a liquid inlet.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a liquid tank having a liquid inflow port is provided in a circulation circuit of a heating water heater or the like and used as a makeup water tank or the like (for example, see Patent Document 1). As such a makeup water tank, as shown in FIG. 8A, a water inlet a is provided on the bottom surface of the tank T and a liquid outlet b is provided on the side of the tank. A system in which water is circulated through b is known.
[0003]
However, the makeup water tank T has a problem that the water flowing in from the inlet a causes the water surface in the tank to rise due to the momentum, disturbing the water surface and generating noise. In order to solve this problem, as shown in FIG. 8B, a plate in which a baffle plate c is fixed to the inner peripheral surface of the tank by spot welding or the like so as to face the inflow port a has been proposed. According to this, since the water which flowed in from the inflow port a collides with the baffle plate c, and is spread | diffused in directions other than a water surface direction, a water surface does not rise and a noise does not generate | occur | produce.
[0004]
[Patent Document 1]
JP-A-9-26145 [0005]
[Problems to be solved by the invention]
However, this proposed structure requires a baffle plate to be fixed to the inner peripheral surface of the tank by spot welding or the like, so that it can be applied to a metal tank but cannot be applied to a resin tank. is there.
[0006]
In view of the above problems, an object of the present invention is to provide a soundproofing device for a liquid tank that can prevent noise generation with a simple structure regardless of the material of the tank.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is a soundproofing device installed in a liquid tank having a liquid inflow port on the bottom surface, which is installed inside the tank and collides with the liquid flowing in from the inflow port to the liquid surface direction. A blocking member that blocks the flow of the liquid and a biasing means that biases the blocking member toward the bottom surface, the blocking member including a collision portion where the liquid collides and a support portion that contacts the bottom surface and supports the collision portion The collision part has a small hole penetrating in the vertical direction when installed in the tank, and the urging means is provided on the upper surface side of the collision part, and the collision part is An elastic member that is urged toward the bottom surface, and a tension member that is connected to the elastic member at one end side and is pulled toward the bottom surface through the small hole so that elastic force is generated in the elastic member, and the other end side is fixed to the tank It is characterized by having .
[0008]
According to this, when the blocking member is urged toward the bottom surface by the urging means, the support portion comes into contact with the bottom surface and supports the collision portion, and the collision portion is held at a constant distance from the bottom surface. And since the liquid which flowed in from the inflow port collides with a collision part and is spread | diffused in directions other than a liquid level direction, a water surface does not rise and noise does not generate | occur | produce. Since this blocking member does not need to be fixed to the inner peripheral surface of the tank by spot welding or the like, it can be applied to a tank made of any material.
[0009]
The urging means includes an elastic member provided on the upper surface side of the collision portion and urges the collision portion in the bottom direction by elastic force, and one end side is connected to the elastic member, and is pulled in the bottom direction through the small hole. Then, the elastic member may have a tension member whose other end is fixed to the tank in a state where the elastic force is generated in the elastic member.
[0010]
In addition, it is preferable that the tension member has a hook portion on the other end side, and the hook portion is hooked to an inlet edge of the outside of the tank and fixed to the tank. Alternatively, the compression member or the tension member is connected to a ring member having a diameter larger than the inner diameter of the inlet at the other end, and the ring member is locked to the inlet from the outside of the tank and fixed to the tank. Also good.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1, reference numeral 1 denotes a liquid tank, which is used as a makeup water tank used in a circulation circuit for circulating water as a heat medium of a heating water heater.
[0012]
The liquid tank 1 is formed by blow molding a resin such as polypropylene, and an inlet 3 for allowing water to flow into the tank and an outlet 4 for allowing water to flow out of the tank are formed on the bottom surface 2. Is open. The inflow port 3 and the outflow port 4 are respectively provided with an inflow pipe 3a and an outflow pipe 4a extending outward from the outer peripheral surface of the tank, and water flows in and out through the inflow pipe 3a and the outflow pipe 4a.
[0013]
Also, on the upper surface of the liquid tank 1, a water supply port 5 for replenishing water lost by evaporation, and an insertion port 6 for inserting a water level confirmation float (not shown) formed of a foamed body A drain port 7 is formed for forcibly discharging the water when there is too much water in the tank.
[0014]
A soundproofing device 8 is installed at the inlet 3 from the liquid tank 1. This soundproofing device 8 is installed inside the tank 1 and urges the blocking member 9 in the direction of the bottom surface 2 by colliding water flowing in from the inlet 3 and blocking the flow in the water surface direction. A coil spring (elastic member) 10 and a pin (tensile member) 11 used for the biasing means.
[0015]
As shown in FIG. 2, the blocking member 9 has a collision part 9a where water from the inflow port 3 collides, and four support parts 9b whose lower ends abut against the bottom surface 2 and support the collision part 9a. ing. A small hole h that penetrates in the vertical direction in the state of being installed in the tank 1 is formed in the collision portion 9a.
[0016]
As shown in FIG. 3, the coil spring 10 is placed on the upper surface side of the collision portion 9 a, and is configured to urge the collision portion 9 a in the direction of the bottom surface 2 by the elastic force of the coil spring 10. The upper end 10 a of the coil spring 10 is bent so as to substantially follow the diameter of the coil so that it can be easily connected to the one end side 11 a of the pin 11.
[0017]
The pin 11 is inserted into the small hole h of the collision portion 9 a and one end side 11 a is connected to the upper end 10 a of the coil spring 10. The other end side 11 b is fixed to the tank 1 in a state where the pin 11 is pulled in the direction of the bottom surface 2 and a compression elastic force is generated in the coil spring 10. Specifically, one end side 11 a of the pin 11 is bent and formed in an annular shape, and this ring is connected to the upper end 10 a of the coil spring 10. The other end side 11b of the pin 11 is bent and formed in a hook shape, and the other end side of the pin 11 is formed by hooking the hook on the edge 3b of the inlet 3 outside the liquid tank 1. 11 b is fixed to the tank 1. At this time, the shape of the hook on the other end side 11b is such that the straight portion of the pin 11, the tip of the hook, and the distance b are larger than the inner diameter of the inflow pipe 3a and smaller than the outer diameter of the inflow pipe 3a. It has become. Thereby, the hooking of the other end side 11b of the pin 11 with respect to the inlet 3 edge 3b is not detached, and a hose or the like can be fitted to the inflow pipe 3a from the outside.
[0018]
Next, with reference to FIG. 4, a method of mounting the soundproofing device 8 inside the tank 1 will be described.
[0019]
First, in the state before installing in the tank 1, the other end side 11b of the pin 11 is bent and formed in an annular shape like the one end side 11a. One end of the wire 12 is connected to the ring on the other end side 11 b, and the wire 12 is passed from the outside of the tank 1 to the insertion port 6 and then from the inside of the tank 1 to the inlet 3. Then, by pulling the other end side of the wire 12 to the outside of the tank 1, the support portion 9b of the blocking member 9 comes into contact with the bottom surface 2 of the tank, and the collision portion 9a is supported by the support portion 9b. When the wire 12 is further pulled, the coil spring 10 is compressed via the pin 11, and a compression elastic force is generated in the coil spring 10. In this state, since the other end side 11b of the pin 11 protrudes outside from the inflow pipe 3a of the inflow port 3, the annular other end side 11b is extended into a hook shape, and this hook is connected to the flow outside the liquid tank 1. It hooks on the inlet 3 edge 3b (see FIG. 3).
[0020]
In the liquid tank 1 in which the soundproofing device 8 is installed, as shown in FIGS. 1 and 5, the water flowing in from the inflow port 3 collides with the collision portion 9a, and the collided water passes between the support portions 9b. Diffused in directions other than the water surface direction. Therefore, the water surface does not rise and no noise is generated.
[0021]
In the above embodiment, the coil spring 10 is provided on the upper surface side of the collision portion 9a and the blocking member 9 is urged in the direction of the bottom surface 2. However, the present invention is not limited to this. For example, as shown in FIG. 6, the coil spring 10 is disposed on the lower surface side of the collision portion 9a, and the upper end 10a of the coil spring 10 is connected to the small hole h of the collision portion 9a and is formed continuously from the lower end 10b of the coil spring 10. The blocking pin 9 may be urged in the direction of the bottom surface 2 by pulling the pin 11 in the direction of the bottom surface 2.
[0022]
In the above embodiment, a hook is formed on the other end side 11b of the pin 11, and this hook is hooked on the inlet 3 edge 3b outside the tank 1 and fixed to the tank 1. The invention is not limited to this. For example, as shown in FIG. 7, a ring member 13 having a diameter larger than the inner diameter of the inflow pipe 3a is connected to a ring formed by bending the other end 11b of the pin 11, and this ring member 13 is connected to the tank 1 You may make it fix to the tank 1 by latching to the inflow port 3 from the outside. In this case as well, as in the case of the hook, the diameter of the ring member 13 is preferably smaller than the outer diameter of the inflow pipe 3a.
[0023]
In the above-described embodiment, the case of the makeup water tank used in the circulation circuit of the heating water heater has been described. However, the present invention is not limited to this, and a liquid tank having a liquid inlet on the bottom surface. As long as the liquid tank is used for any purpose, it can be applied.
[0024]
In the above embodiment, the blocking member 9 is urged using the elastic force of the coil spring 10, but the present invention is not limited to this, and various known elastic members are used instead of the coil spring 10. be able to.
[0025]
In addition, this invention is not limited to the thing of embodiment of the previous period, It can change variously as needed.
[0026]
【The invention's effect】
As is clear from the above description, the present invention is such that, when the blocking member is urged in the bottom direction by the urging means, the support portion abuts against the bottom surface and supports the collision portion, and the collision portion is constant from the bottom surface. Is kept at a distance. And since the liquid which flowed in from the inflow port collides with a collision part and is spread | diffused in directions other than a liquid level direction, a water surface does not rise and noise does not generate | occur | produce. Since this blocking member does not need to be fixed to the inner peripheral surface of the tank by spot welding or the like, it can be applied to a tank made of any material.
[Brief description of the drawings]
FIG. 1 is a front view in which a tank in which an embodiment of a soundproofing device according to the present invention is installed is partially deleted. FIG. 2 is a perspective view showing a blocking member. FIG. 3 is an enlarged cross-sectional view of the main part of FIG. FIG. 4 is a front view for explaining the installation of the soundproofing device. FIG. 5 is a top view with a part of the tank removed. FIG. 6 is a cross-sectional view showing another embodiment of the soundproofing device according to the present invention. FIG. 8 is an enlarged cross-sectional view of a tank in which another embodiment of the soundproofing device is installed. FIG. 8 is a front cross-sectional view showing a conventional liquid tank.
1 Liquid tank 3 Inlet 9 Block member 10 Coil spring 11 Pin

Claims (4)

A soundproofing device installed in a liquid tank having a liquid inlet on the bottom surface, the blocking member installed inside the tank for colliding liquid flowing in from the inlet and blocking the flow in the liquid surface direction, and the blocking member Urging means for urging the bottom surface toward the bottom surface, and the blocking member includes a collision portion where the liquid collides and a support portion which contacts the bottom surface and supports the collision portion, and the collision portion includes a tank. A small hole penetrating in the vertical direction in the state of being installed in the inside, and the biasing means is provided on the upper surface side of the collision portion and elastic member for urging the collision portion in the bottom direction by elastic force, and one end The other end side is connected to the elastic member, and the other end side is fixed to the tank in a state where an elastic force is generated in the elastic member by being pulled in the bottom direction through the small hole. Soundproofing device for liquid tanks. The urging means is connected to the collision portion and is provided on the lower surface side of the collision portion, and urges the collision portion in the bottom direction by elastic force, and one end side is connected to the elastic member, and in the bottom direction. tensile has been resilient member liquid tank soundproofing apparatus according to claim 1, wherein the other end side in a state where the elastic force is generated is characterized in that it has a tensile member fixed to the tank. 3. The liquid tank according to claim 2 , wherein the tension member has a hook portion on the other end side, and the hook portion is hooked to an inlet edge of the outside of the tank and fixed to the tank. Soundproofing device. Said tension member is connected to the ring member of a larger diameter than the inlet inner diameter at the other end, claim 2 in which the ring member is characterized in that it is fixed to the locked and tank inlet from the tank outside The soundproofing device for liquid tanks as described in 2.

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