JP6839404B2 - Piping joint mounting structure in hot water equipment unit and hot water equipment unit - Google Patents

Description

The present invention relates to a pipe joint mounting structure in a hot water equipment unit such as a water heater unit and a hot water storage tank unit, and a hot water equipment unit.

Specific examples of the pipe joint mounting structure in the hot water equipment unit include the structures described in Patent Documents 1 and 2.
In the structures described in these documents, an opening for piping is provided in the side wall portion or the bottom wall portion of the outer case accommodating the hot water equipment, and the piping joint is provided so as to face the opening and approach the opening. It is installed. The internal pipe for hot water distribution, which is attached to the hot water equipment and is located inside the outer case, and the external pipe for hot water distribution, which is located outside the outer case, are connected to the pipe joints, respectively.
According to such a configuration, it is possible to appropriately connect the internal pipe and the external pipe by using the pipe joint attached to the outer case.

However, in the above-mentioned prior art, there is still room for improvement as described below.

That is, conventionally, as a means for attaching the pipe joint to the side wall portion or the bottom wall portion of the outer case, a means for screwing a plurality of parts of the pipe joint by using a screw body such as a screw has been adopted. However, the screw tightening directions at the plurality of screw fastening points are all the same direction. With this, the mounting strength of the pipe joint in the screw tightening direction can be increased, but the mounting strength in the direction intersecting it becomes slightly inferior, and there is concern about the mounting strength of the pipe joint when handling the internal and external pipes. It may occur. In order to solve this problem, it is necessary to increase the number of screwing points, but this makes the work of attaching the pipe joint complicated.

Jikkenhei 2-70158 Gazette Japanese Unexamined Patent Publication No. 9-296957

The present invention has been conceived under the above-mentioned circumstances, and has a pipe joint mounting structure in a hot water equipment unit capable of appropriately increasing the mounting strength of the pipe joint by a simple configuration, and hot water. The challenge is to provide equipment units.

In order to solve the above problems, the following technical measures are taken in the present invention.

The pipe joint mounting structure in the hot water equipment unit provided by the first aspect of the present invention is for an outer case for accommodating the hot water equipment and the internal pipes attached thereto, and for pipes provided on the wall portion of the outer case. A hot water equipment unit including a pipe joint that is attached to the wall portion in a state of being inserted into or adjacent to the opening and is used for connecting the internal pipe to an external pipe located outside the outer case. In the pipe joint mounting structure of the above, in the wall portion of the exterior case, a cut-up-shaped upright piece is formed at the peripheral edge of the opening, and the pipe joint is attached to the upright piece. It is fastened using the fastening member of No. 1, and the pipe joint is provided with a hole into which a functional member configured separately from the pipe joint is inserted, and the first fastening member is It is characterized by having a protruding portion protruding toward the functional member from the standing piece so that the functional member can be restricted from coming out of the hole by contacting the functional member.

According to such a configuration, the following effects can be obtained.
First, since the pipe joint is fastened to the upright piece by the first fastening member, the mounting strength of the pipe joint in this fastening direction can be increased. For this reason, it is possible to effectively increase the total mounting strength of the pipe joint and to effectively increase the total mounting strength of the pipe joint, as compared with the conventional technique in which the pipe joint is simply brought into contact with the wall of the outer case and screwed. It is also possible to appropriately eliminate concerns about the mounting strength of pipe joints when arranging external pipes. According to the present invention, it is possible to increase the mounting strength of the pipe joint while eliminating the need to increase the number of screwed parts of the pipe joint.
Further, the upright piece provided on the wall portion of the pipe joint can be formed by performing a so-called cut-and-raise process on the wall portion of the outer case, and it is not necessary to form it by using another part or the like. Therefore, it is possible to reduce the manufacturing cost without increasing the number of parts.
Furthermore, since the first fastening member used for mounting the pipe joint is also used for mounting the functional member, the configuration is rational, and the dedicated parts for mounting the functional member are eliminated or Can be reduced.

In the present invention, preferably, the pipe joint has a flange portion that abuts on the wall portion of the exterior case so as to close the opening and is fastened to the wall portion by using a second fastening member. Is provided, and the fastening directions of the first and second fastening members with respect to the piping joint are directions that intersect with each other.

According to such a configuration, the mounting strength of the pipe joint can be increased more effectively by the first and second fastening members. It is not necessary to increase the number of fastening points using the second fastening member.

In the present invention, preferably, the peripheral portion of the opening abuts on the pipe joint at a position different from the position where the upright piece is formed in a direction intersecting the fastening direction of the first fastening member. Additional upright pieces in the shape of possible cuts are formed.

According to such a configuration, by using the additional upright piece, it is possible to easily and appropriately position the pipe joint in the direction intersecting the fastening direction of the first fastening member or to prevent and fix the displacement. it can. Therefore, it is more effective in increasing the reliability of the installation of the pipe joint.

The hot water equipment unit provided by the second aspect of the present invention is characterized by comprising a pipe joint mounting structure in the hot water equipment unit provided by the first aspect of the present invention.

According to such a configuration, the same effect as described for the pipe joint mounting structure in the hot water equipment unit provided by the first aspect of the present invention can be obtained.

Other features and advantages of the present invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings.

It is explanatory drawing which shows typically an example of the hot water equipment unit which concerns on this invention. It is a partially cutaway perspective view of the hot water equipment unit shown in FIG. It is an exploded perspective view of FIG. FIG. 2 is a sectional view taken along line IV-IV of FIG. It is a partial cross-sectional main part side view which shows the other example of this invention.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

The hot water equipment unit U shown in FIG. 1 is a water heater unit, and is a hot water equipment 1 (hot water generating equipment) in which a burner 10 and a heat exchanger 11 are combined, and an internal pipe for hot water flow attached to the hot water equipment 1. 2a to 2c, an exterior case 3 for accommodating all of them inside, and pipe joint mounting structures Ca and Cb including pipe joints 4A and 4B for hot water flow are provided. A water supply pipe 5a and a hot water outlet pipe 5b as external pipes are connected to the lower portions of the pipe joints 4A and 4B.

The outer case 3 has, for example, a substantially rectangular parallelepiped shape, and its front surface portion is an opening that is opened and closed by a front cover (not shown). In the present embodiment, the piping joints 4A and 4B are attached to the bottom wall portion 30 of the exterior case 3, and the bottom wall portion 30 corresponds to an example of the “wall portion” of the exterior case in the present invention.

The hot water device 1 can heat the hot water in the heat transfer tube 11a by recovering heat from the combustion gas generated by the burner 10 by using the heat transfer tube 11a of the heat exchanger 11. Internal pipes 2a and 2c connected to the upper part of the pipe joint 4A are connected to the water inlet side of the heat transfer pipe 11a, and hot water supplied from the water supply pipe 5a can be sent to the heat transfer pipe 11a. An internal pipe 2b connected to the upper part of the pipe joint 4B is connected to the hot water outlet side of the heat transfer pipe 11a, and the hot water heated in the heat transfer pipe 11a is sent to the hot water outlet pipe 5b and supplied to a predetermined hot water supply destination. It is possible.
As means for supplying fuel gas to the burner 10, an internal pipe 13 as a gas pipe, an external pipe 14, and a pipe joint 15 for a gas pipe connecting these are provided, and the pipe joint 15 is also an exterior. It is attached to the bottom wall portion 30 of the case 3.

2 to 4 show details of the pipe joint mounting structure Ca. The pipe joint mounting structure Cb has substantially the same configuration as the pipe joint mounting structure Ca. Therefore, the description of the pipe joint mounting structure Cb will be omitted.

As is well represented in FIGS. 2 and 3, the pipe joint 4A includes the first and second joint portions 40a and 40b for connecting the internal pipe 2a and the water supply pipe 5a described above. In addition, a filter mounting portion 41 provided at an intermediate position between the first and second joint portions 40a and 40b, and a flange portion 42 located above the filter mounting portion 41 are provided. Further, on the upper surface side of the flange portion 42, a bulging portion 44 bulging from one side surface of the pipe body portion 43 to the side thereof, a screw hole 45 formed in the bulging portion 44, and an antifreezing heater 6. It also has a hole 46 for mounting. The anti-freezing heater 6 corresponds to an example of the "functional member" in the present invention.

The pipe joint mounting structure Ca includes an opening 31 for piping, a standing piece 32, and an additional standing piece 33 provided in the bottom wall portion 30 of the exterior case 3. The pipe joint 4A is inserted into the opening 31 from below, and is screwed to the bottom wall 30 in a state where the flange 42 is set to close the opening 31. This screwing is performed by using a screw body 72 that is inserted from below into a notch-shaped or non-notch-shaped hole for inserting a plurality of screw bodies 42a provided in the flange portion 42. .. The screw body 72 corresponds to a specific example of the "second fastening member" in the present invention. The bottom wall portion 30 is provided with a plurality of (for example, three) screw holes 34 into which the screw body 72 is screwed.

The upright piece 32 is formed so as to stand up from the peripheral edge of the opening 31 by so-called cutting and raising, and is integrally formed with the bottom wall portion 30. The upright piece 32 is in contact with the side surface 44a of the bulging portion 44 of the pipe joint 4A and is screwed to the bulging portion 44. This screwing is performed by inserting the screw body 71 into the hole 32a for inserting the screw body provided in the upright piece 32 from the front side thereof and screwing the screw body 71 into the screw hole 45. The screw body 71 corresponds to a specific example of the "first fastening member" in the present invention. Preferably, the standing piece 32 is located on the front side of the exterior case 3 with respect to the pipe joint 4A, and the screw body 71 can be tightened from the front opening side of the exterior case 3. The screwing direction by the screw body 72 is the vertical height direction, whereas the screwing direction by the screw body 71 is a substantially horizontal direction, and these are directions that intersect each other. Preferably, the side surface 44a of the bulging portion 44 has a planar shape capable of surface contact with the standing piece 32.

As shown in FIG. 4, a part of the head portion of the screw body 71 is a protruding portion 71a that protrudes by an appropriate dimension L on one side of the standing piece 32. The protruding portion 71a is approaching or in contact with the head of the antifreezing heater 6 inserted in the hole 46, and restricts the antifreezing heater 6 from coming out of the hole 46. The standing piece 32 is arranged so as not to interfere with the anti-freezing heater 6 so as not to interfere with the insertion and removal of the anti-freezing heater 6 into the hole 46.

The additional upright piece 33 is provided at a position in the peripheral edge of the opening 31 so as to be in opposite contact with the side surface 44b of the bulge 44 of the pipe joint 4A, and is so-called cut-up processing like the upright piece 32. Is integrally formed with the bottom wall portion 30. The orientations of the additional standing pieces 33 and the standing pieces 32 differ by an angle of approximately 90 degrees. The additional upright piece 33 and the pipe joint 4A are not screwed together. However, these may be screwed.

Next, the operation of the pipe joint mounting structure Ca described above will be described.

First, the pipe joint 4A is fastened to the bottom wall portion 30 in the vertical direction by using the screw body 72, and is also fastened to the standing piece 32 in the substantially horizontal direction by using the screw body 71. ing. Therefore, the mounting strength of the pipe joint 4A with respect to a load in a substantially horizontal direction is effectively increased, and the pipe joint 4A is mounted when the internal pipe 2a and the water supply pipe 5a connected to the pipe joint 4A are routed. It is possible to prevent anxiety about the condition. In the present embodiment, when the pipe joint 4A is attached, a total of three screw bodies 72 are used for screwing to the bottom wall portion 30, and one screw body 71 is used for screwing to the standing piece 32. However, in this structure, the mounting strength of the pipe joint 4A is considerably higher than that in which the pipe joint 4A is simply screwed to the bottom wall portion 30 using the same number of screw bodies.

Although the additional upright piece 33 is not used for screwing the pipe joint 4A, the pipe joint 4A is positioned in a direction intersecting the fastening direction between the upright piece 32 and the pipe joint 4A by the screw body 71. Play a role. Therefore, the mounting state of the pipe joint 4A can be made more stable and reliable.

As described above, the protruding portion 71a of the screw body 71 plays a role of preventing the anti-freezing heater 6 from coming off, and does not require special parts and work for fixing the anti-freezing heater 6. Therefore, such rationalization makes it possible to reduce the manufacturing cost. The standing piece 32 and the additional standing piece 33 can be formed during the press working when the opening 31 is provided in the bottom wall portion 30 of the exterior case 3, and the formation thereof is relatively easy. Since they are not formed by using a member different from the bottom wall portion 30, the formation cost thereof is also low. Further, since the upright piece 32 and the pipe joint 4A can be screwed from the front opening side of the outer case 3, the work is easy and the assembly workability of the pipe joint 4A can be further improved. It is possible.

FIG. 5 shows another embodiment of the present invention. Elements that are the same as or similar to those of the embodiment are designated by the same reference numerals as those of the embodiments, and duplicate description thereof will be omitted.

In the embodiment shown in FIG. 5, the side surface 44b of the bulging portion 44 connected to the pipe joint 4A includes a downwardly inclined inclined surface 44c. The additional standing piece 33 stands below the inclined surface 44c, and its tip (upper end) is in contact with the inclined surface 44c.
According to such a configuration, the additional upright piece 33 exerts the action of the pipe joint 4A receiving the force in the direction indicated by the arrow Na, and also exerts the action of receiving the rotational moment M acting on the pipe joint 4A. .. When the water supply pipe 5a is routed, a force F in a substantially horizontal direction may act on the lower part of the pipe joint 4A, and in that case, a rotational moment M shown in the figure may be generated. On the other hand, this rotational moment M can be received by the additional standing piece 33 that abuts on the inclined surface 44c. Therefore, according to the present embodiment, the mounting strength against the force F that generates the above-mentioned rotational moment M is also improved.
As will be understood from the present embodiment, when the additional upright piece 33 is brought into contact with the pipe joint 4A, it is possible to bring them into contact with each other in various ways.

The present invention is not limited to the contents of the above-described embodiments. The piping joint mounting structure of the hot water equipment unit according to the present invention and the specific configuration of each part of the hot water equipment unit can be variously redesigned within the scope intended by the present invention.

A plurality of standing pieces referred to in the present invention may be provided on the peripheral edge of one opening. The upright piece is preferably provided so as to be located inside the outer case, but it may also be provided in a form protruding outward from the outer case (for example, a form protruding downward from the bottom wall portion of the outer case). It is possible.

In the above-described embodiment, the pipe joint 4A is inserted into the opening 31 for piping provided in the bottom wall portion 30, but the pipe joint 4A does not necessarily have to be inserted into the opening 31. For example, it is possible to connect the pipe joint to the pipe joint by mounting the pipe joint on the bottom wall portion and inserting an external pipe through an opening provided in the bottom wall portion.

In the above-described embodiment, the pipe joint 4A is attached to the bottom wall portion 30 of the exterior case 3, but the wall portion of the exterior case 3 to which the pipe joint 4A is attached is not limited to the bottom wall portion 30. For example, as in Patent Document 1, it may be configured to be attached to the side wall portion of the outer case. Of course, it is also possible to mount it on a wall portion other than the bottom wall portion and the side wall portion.

The internal pipe and the external pipe connected to the pipe joint are not limited to the pipe for distributing hot water, and may be a pipe for circulating a fluid other than hot water. For example, the present invention can be applied as a means for attaching the gas pipe pipe joint 15 shown in the above embodiment to the outer case 3.

The functional member referred to in the present invention is not limited to the antifreeze heater. For example, it can be used as a sensor for detecting the temperature and flow rate of a fluid. The fastening member is not limited to a screw body such as a screw, but also includes a rivet and other caulking members.

The hot water device referred to in the present invention is a device having at least one of a hot water generation function and a hot water storage function. As the hot water device, other than the hot water generating device in which a combustor and a heat exchanger provided with a heat transfer tube are combined as in the above-described embodiment, for example, a heat pump for heating hot water, a cogeneration system device, or a heat pump. A hot water storage tank for storing hot water generated by heating by a cogeneration system device or the like can be applied. Therefore, the hot water equipment unit according to the present invention can be specifically configured as a water heater unit, a heat pump unit, a cogeneration system unit, a hot water storage tank unit, or the like.

U Hot water equipment unit Ca, Cb Piping joint mounting structure 1 Hot water equipment 2a to 2c Internal piping 3 Exterior case 30 Bottom wall (wall of exterior case)
31 Opening 32 Standing piece 33 Additional standing pieces 4A, 4B Piping joint 5a Water supply pipe (external piping)
5b Hot water pipe (external pipe)
6 Anti-freezing heater (functional member)
71 Screw body (first fastening member)
71a Overhang 72 Screw body (second fastening member)

Claims (4)

An exterior case that houses the hot water equipment and the internal piping attached to it,
Used to be attached to the wall in a state of being inserted into or adjacent to an opening for piping provided in the wall of the exterior case, and to connect the internal piping to an external piping located outside the exterior case. Plumbing joints and
It is a pipe joint mounting structure in the hot water equipment unit, which is equipped with.
Of the wall portion of the exterior case, a cut-up-shaped upright piece is formed on the peripheral edge of the opening, and the pipe joint is fastened to the upright piece by using the first fastening member. And
The pipe joint is provided with a hole into which a functional member configured separately from the pipe joint is inserted.
The first fastening member has a protruding portion that protrudes from the standing piece toward the functional member so that the functional member can be restricted from coming out of the hole by contacting the functional member. The pipe joint mounting structure in the hot water equipment unit, which is characterized by the fact that it is installed. The pipe joint mounting structure in the hot water equipment unit according to claim 1.
The pipe joint is provided with a flange portion that abuts on the wall portion of the exterior case so as to close the opening and is fastened to the wall portion by using a second fastening member.
A pipe joint mounting structure in a hot water equipment unit in which the fastening directions of the first and second fastening members to the pipe joint are directions that intersect with each other. The pipe joint mounting structure in the hot water equipment unit according to claim 1 or 2.
A cut-out shape that can abut the pipe joint in a direction intersecting the fastening direction of the first fastening member is added to a position of the peripheral edge of the opening that is different from the position where the standing piece is formed. Piping joint mounting structure in the hot water equipment unit where the upright pieces are formed. A hot water equipment unit comprising the pipe joint mounting structure in the hot water equipment unit according to any one of claims 1 to 3 .

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