A piping system, a hot water supply system equipped therewith, and brackets usable with the piping system.

Abstract

This system allows for easy and precise changes to the mounting position of piping components on the frame, providing a piping system with excellent flexibility and convenience. [Solution] The piping system B includes a bracket 6 for attaching a piping member 1 to a frame 4, wherein the piping mounting plate portion 62 of the bracket 6 is provided with an extended portion 63 that extends further in the lateral direction of the frame 4 than the leg portion 61 and to which a fixing member 7 for fixing the piping member 1 is attached, and the mounting method of the piping member 1 to the bracket 6 can be selectively set to either a first mounting method in which the piping member 1 is positioned on the front portion 63a side of the extended portion 63, or a second mounting method in which it is positioned on the rear portion 63b side of the extended portion 63.

Description

Technical Field

[0001] The present invention relates to a piping system used for installation of a water heater or the like, a hot water supply system configured using this piping system, and a bracket that can be used to construct the piping system.

Background Art

[0002] Specific examples of the piping system include those described in Patent Documents 1 to 3. The piping systems described in these documents form part of a hot water supply system, and on a pedestal that supports a water heater, piping members for hot water flow and piping members for fuel flow are vertically misaligned and are attached in a shape extending in the lateral width direction (horizontal direction) of the pedestal. To each of these piping members, a branch piping portion for connecting these to a predetermined portion of the water heater is branch-connected. According to such a piping system, various piping members can be installed neatly and with good space efficiency in the vicinity of the water heater.

[0003] However, in the above prior art, as described below, there was still room for improvement.

[0004] That is, in the piping system, when extending the branch piping portion branch-connected to the piping member to the position of the water heater, the arrangement of the piping member (arrangement in the front-rear direction of the pedestal) may need to be changed for various reasons such as not interfering with other piping members. However, in the above prior art, no means for easily and accurately coping with such a situation has been proposed. Specifically, in the above prior art, as a means for attaching the piping member to the pedestal, a fixing member such as a U-bolt (see Patent Document 4) is used, and a means for fixing the piping member to a column of the pedestal or a cross member provided on the column is adopted. However, with such means, it is difficult to change the position of the piping member in the front-rear direction of the pedestal.

[0005] Furthermore, Patent Document 5 describes a method for changing the arrangement of piping members by reversing the orientation of a clamp member used to hold piping members, when the clamp member is attached to the end plate of a gate-type or Ω-type bracket. However, such a method results in a special and complex clamp member configuration. Therefore, compared to commercially available general-purpose products such as U-bolts, U-belts, or Ω-type fittings, the cost of the parts is considerably higher, resulting in a greater economic burden. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Patent No. 2767500 [Patent Document 2] Japanese Patent Publication No. 2013-113494 [Patent Document 3] Japanese Patent Publication No. 2017-116222 [Patent Document 4] Publication No. 8-1351 [Patent Document 5] Japanese Utility Model Publication No. 58-4025 [Overview of the project] [Problems that the invention aims to solve]

[0007] This invention was conceived under the circumstances described above, and relates to the piping members to the frame. The objective is to provide a piping system that allows for easy and precise changes in installation location, offering excellent flexibility and convenience, a hot water supply system equipped with this piping system, and brackets that can be used to construct the piping system. [Means for solving the problem]

[0008] To solve the above problems, the present invention employs the following technical measures.

[0009] A piping system provided by a first aspect of the present invention comprises a frame having width in the vertical height direction and the horizontal width direction, and a piping member attached to the frame via a bracket so as to extend in the horizontal direction, wherein the bracket comprises a frame mounting portion that is attached and fixed to the frame, a leg portion that protrudes from the frame mounting portion toward the front side of the frame, and a piping mounting plate portion connected to the tip of the leg portion, wherein the piping mounting plate portion of the bracket is provided with an extended portion that extends further in the horizontal direction than the leg portion and has a front portion and a rear portion facing the front-rear direction of the frame, and to which a fixing member for fixing the piping member is attached, and the piping member can be selectively set to either a first mounting configuration in which the piping member is positioned on the front portion side of the extended portion, or a second mounting configuration in which the piping member is positioned on the rear portion side of the extended portion.

[0010] This configuration yields the following effects: In other words, when attaching piping members to a frame using brackets, the mounting arrangement of the piping members in the front-to-back direction of the frame can be changed depending on whether the piping members are mounted in the first or second mounting configuration described above. Therefore, compared to conventional technology where it was difficult to change the mounting location of piping members, this method offers greater flexibility in the mounting arrangement of piping members to the frame, making it more convenient. For example, it is useful when you want to set up piping members so that they do not interfere with other members. Furthermore, a fixing member for securing the piping member is attached to the extended portion of the piping mounting plate of the bracket, thereby securing the piping member. This extended portion extends further in the lateral direction of the frame than the legs of the bracket. Therefore, when performing work to secure the piping member to the extended portion using the fixing member (for example, screwing with a tool), the legs can be kept as unobtrusive as possible, making the work easier and faster. Furthermore, unlike Patent Document 5, there is no need to use a clamp member with a special and complex structure as a member that enables the repositioning of the piping member. In the present invention, general-purpose products such as U-bolts, U-belts, or Ω-shaped fittings can be used as fixing members, and the cost of the parts can be kept low.

[0011] In the present invention, preferably, the bracket includes a pair of mounting parts for the frame, spaced apart in the vertical direction of the frame, and a pair of legs, projecting forward from the pair of mounting parts and spaced apart from each other, and the pipe mounting plate is connected in a bridging manner between the tips of the pair of legs, and when the second mounting configuration is set, the pipe member penetrates the area between the pair of legs, and the fixing member is in a position retracted from the area between the pair of legs.

[0012] With this configuration, the bracket has a predetermined pair of mounting sections for the frame, a pair of legs, and a pipe mounting plate that bridges the gap between the pair of legs, resulting in a so-called gate-like, Ω-shaped, or similar form. This increases the strength of the bracket and stabilizes its attachment to the frame. In addition to this, the following further effects can be obtained. In other words, when the second mounting configuration is set up, in which the piping member is positioned and attached to the rear side of the extension, the piping member penetrates the area between the pair of legs, and interference with the bracket is appropriately avoided. On the other hand, the fixing member is positioned away from the area between the pair of legs, so that the pair of legs do not get in the way when operating the fixing member to fix the piping member to the extension, thereby improving operability.

[0013] In the present invention, preferably, the frame is capable of mounting desired equipment at a position above the piping member, and further comprises an additional piping member mounted on the frame so as to be positioned between the equipment and the piping member and extending in the lateral direction, and a branch piping section that is branched and connected to the piping member, extends upward from the piping member, passes in front of the additional piping member, and whose upper end is connected to the equipment, wherein when the piping member is set to the first mounting configuration, the piping member is positioned offset forward of the frame from the area directly below the additional piping member.

[0014] This configuration yields the following effects: In other words, when setting up the first mounting configuration in which the piping member is positioned and mounted on the front side of the extension, the piping member is offset forward of the support frame from the area directly below the additional piping member. This makes it easier to set up the branch piping section connected to the piping member so as not to unduly interfere with the additional piping member. The area near the base of the branch piping section can, for example, be set to extend directly above the piping member, eliminating or reducing the need to deliberately provide inclined or bent sections in the branch piping section to avoid interference with the additional piping member.

[0015] In the present invention, preferably, the piping member is for oil circulation and is equipped with an oil filter connected to the piping member so as to hang down from it, and when the piping member is set in the first mounting configuration, the area near the base of the branch piping section extends directly above the piping member, and even when the piping member is mounted on the frame in a left-right inverted state, interference between the branch piping section and the additional piping member can be avoided.

[0016] According to such a configuration, even when the piping member for oil flow is attached to the pedestal in a horizontally inverted state, the oil filter can maintain its posture of hanging down from the piping member, and the region near the base of the branch piping portion can be in a state of extending straight upward from the piping member. In contrast, when the branch piping portion is tilted so as to extend obliquely upward, there is a risk that when the piping member is horizontally inverted, the inclination direction of the branch piping portion will be reversed, causing problems such as the branch piping portion abutting against the pedestal, for example. However, such risks can be appropriately eliminated. According to the above configuration, it is possible to preferably cope with the case where the piping member is attached in a horizontally inverted state, which is convenient.

[0017] In the present invention, preferably, in a state where the piping member is set to the second mounting mode, the piping member is located overlapping the region directly below the additional piping member, and the region near the base of the branch piping portion extends obliquely upward in front of the pedestal from the piping member so as not to interfere with the additional piping member.

[0018] According to such a configuration, the following effects can be obtained. That is, when the piping member is set to the second mounting mode, since this piping member is located in the region directly below the additional piping member, it is preferable for avoiding the situation where this piping member partially protrudes significantly forward of the pedestal compared to the additional piping member. Also, even in the case of such a second mounting mode, inappropriate interference between the branch piping portion and the additional piping member can be appropriately avoided.

[0019] The hot water supply system provided by the second aspect of the present invention is characterized by including the piping system provided by the first aspect of the present invention and at least one hot water supply device attached to the pedestal of this piping system.

[0020] According to such a configuration, the same effects as those described for the piping system provided by the first aspect of the present invention can be obtained.

[0021] The bracket provided by the third aspect of the present invention is a bracket for attaching a piping member to a desired pedestal, and includes a pedestal attachment portion fixedly attached to the pedestal, a leg portion protruding from the pedestal attachment portion to the front side of the pedestal, and a piping attachment plate portion connected to the tip of the leg portion. The piping attachment plate portion has a front surface portion and a rear surface portion that extend in the lateral width direction more than the leg portion and face the front-back direction of the pedestal, and an extension portion to which a fixing member for fixing the piping member is attached is provided. As an attachment mode of the piping member to the bracket, either a first attachment mode in which the piping member is disposed on the front surface portion side of the extension portion or a second attachment mode in which the piping member is disposed on the rear surface portion side of the extension portion can be selectively set.

[0022] A bracket having such a configuration can be suitably used when constructing the piping system provided by the first aspect of the present invention, and the same effects as those described for the piping system can be obtained.

[0023] Other features and advantages of the present invention will become more apparent from the following description of the embodiments of the invention with reference to the accompanying drawings.

Brief Description of the Drawings

[0024] [Figure 1] It is a schematic perspective view showing an example of a hot water supply system provided with the piping system according to the present invention. [Figure 2] (a) is a cross-sectional view of the main part of FIG. 1, showing an example of the first attachment mode of the piping member, and (b) is a cross-sectional view of the main part showing an example of a second attachment mode different from (a). [Figure 3] (a) is a perspective view showing a bracket in a state where the first attachment mode shown in FIG. 2(a) is set, (b) is a front view from the front position of (a), (c) is a side view of (a), and (d) is a plan view of (a). [Figure 4](a) is a side view showing the bracket in the state where the second mounting configuration shown in Figure 2(b) is set, and (b) is a plan view of (a). [Figure 5] (a) and (b) are plan views showing the proportional relationship 1 with the embodiments shown in Figures 1 to 4. [Figure 6] This is a schematic perspective view showing the proportional relationship 2 with the embodiments shown in Figures 1 to 4. [Figure 7] (a) is a side cross-sectional view of the main part of Figure 6, and (b) is a side cross-sectional view of the main part showing the operation when the piping member shown in (a) is reversed left and right. [Modes for carrying out the invention]

[0025] Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

[0026] The hot water supply system A shown in Figure 1 has a configuration in which multiple water heaters 5 are mounted on top of the frame 4 of the piping system B. Each water heater 5 is an instantaneous oil water heater capable of heating hot water using an oil burner that burns oil, such as kerosene. The configuration of these water heaters 5 is publicly known, and a detailed explanation is omitted. Note that the water heaters 5 correspond to an example of the "equipment" described in claim 3 of this application.

[0027] The frame 4 is constructed by joining together metal members such as L-shaped cross-section members, square pipes, or panel materials. More specifically, the frame 4 has a structure in which multiple support columns 41 stand upright from a base portion 40, such as a frame in plan view, and has an appropriate width in the vertical height direction and the horizontal width direction.

[0028] Piping system B is configured such that multiple piping members 1 to 3 are attached to the aforementioned mounting frame 4 at a position lower than the multiple water heaters 5. Here, the piping member 1 is for oil circulation to supply fuel oil to the water heater 5, and is, for example, a metal pipe, corresponding to an example of the "piping member" described in claim 1 of this application. This piping member 1 is set to extend in the lateral direction of the frame 4 and is attached to the frame 4 via a pair of brackets 6, which will be described later. One end of this piping member 1 is an oil supply port 10. An oil filter 92 and an on-off valve 93 are provided in the middle of the piping member 1, and a plurality of branch piping sections 8 are connected to it. The upper part of the oil filter 92 is connected to the piping member 1 so that it hangs down from the piping member 1. Each branch piping section 8 is a part for individually supplying fuel oil from the piping member 1 to each of the plurality of water heaters 5, and comprises a branch piping connector 81 provided in the middle of the piping member 1 and a piping body section 80 which is a metal pipe whose lower end is connected to the branch piping connector 81. The upper end of each branch piping section 8 is connected to the fuel oil air inlet 51 of the water heater 5.

[0029] The piping members 2 and 3 are piping members for the hot water outlet and water inlet of the multiple water heaters 5, and are constructed using, for example, copper pipes. They are positioned above and below the piping member 1, respectively, and are set to extend in the lateral direction of the base 4, and are attached to the base 4 using mounting fixtures 29 and 39. The piping member 2 corresponds to an example of the "additional piping member" described in claim 3 of this application. Multiple branch piping sections 20 and 30 are branched and connected to the piping members 2 and 3 at intermediate points, and the hot water supplied into the piping member 2 from one end 2a enters the water inlet 53 of each water heater 5 via each branch piping section 20. The hot water heated and generated by each water heater 5 flows from the outlet 52 of each water heater 5 into the piping member 3 via each branch piping section 30, and is discharged from one end 3a. The piping member 1 is positioned between the two piping members 2 and 3. With this configuration, the space between the two piping members 2 and 3 is effectively utilized when installing the piping member 1, resulting in good space efficiency. Furthermore, the piping member 1 is protected by the two piping members 2 and 3, making it less susceptible to external forces from above and below, which is also preferable in terms of protecting the piping member 1.

[0030] As previously described, bracket 6 is used to attach the piping member 1 to the support frame 4. In the piping system B shown in Figure 1, the first mounting configuration of the piping member 1 using bracket 6 is set as shown in Figures 2(a) and 3. However, it is possible to selectively set the second mounting configuration shown in Figures 2(b) and 4 instead. This point will be discussed later.

[0031] The bracket 6 is, for example, a press-formed metal plate and comprises a pair of frame mounting portions 60, a pair of leg portions 61, and a pipe mounting plate portion 62. An extension portion 63 is provided on the pipe mounting plate portion 62. The pair of mounting sections 60 are attached and fixed to the frame 4 via bolts and nuts 90, spaced apart in the vertical direction. The pair of legs 61 are parts that protrude from the pair of mounting sections 60 toward the front of the frame 4. The pipe mounting plate 62 is connected to the tips of the pair of legs 61 in a bridging manner.

[0032] The extension 63 is part of the pipe mounting plate 62 and is laterally to the frame 4 than the pair of legs 61. This is a portion that extends outward in the width direction (the portion with width dimension La), and has a front portion 63a and a rear portion 63b facing the front-rear direction of the frame 4. A U-bolt 7 and its attached nut 70 are attached to this extended portion 63 as fixing members for fixing the piping member 1. As a means for this, a pair of holes 63c for inserting a pair of straight shaft portions of the U-bolt 7 are provided penetrating the extended portion 63. Figure 3(b) is a front view of the frame 4 from the front position, and in this figure, the U-bolt 7 and nut 70 are arranged so as not to overlap with the bolts and nuts 90 of the pair of legs 61 and the pair of frame mounting portions 60, respectively. In the first mounting configuration shown in Figure 3, the nut 70 is located on the rear portion 63b side of the extended portion 63, but is not located within the area between the pair of legs 61, and is positioned to be retracted outside that area. In addition, when the second mounting configuration shown in Figures 2(b) and 4 is adopted, the U-bolt 7 is located on the rear surface 63b side of the extension 63, and the position of the piping member 1 is closer to the frame 4 than in the first mounting configuration. In this second mounting configuration, the piping member 1 penetrates the area between the pair of legs 61, and the U-bolt 7 is positioned outside the area between the pair of legs 61.

[0033] The semi-circular shaft portion of the U-bolt 7 is provided with a resin coating portion 7a, and a resin contact plate 71 is attached to the mounting location of the U-bolt 7, through which a pair of straight shaft portions pass. When attaching the piping member 1 using the U-bolt 7, direct metal-to-metal contact can be avoided by bringing these resin coating portion 7a and contact plate 71 into contact with the piping member 1.

[0034] In Figures 1 and 2(a), as previously described, the piping member 1 is in the first mounting configuration, and the piping member 1 is positioned on the front portion 63a side of the extension portion 63 of the bracket 6 and fixed by a U-bolt 7. In this first mounting configuration, the piping member 1 is not positioned to overlap the area directly below the piping member 2, but is offset by an appropriate amount to the front of the frame 4 from the area directly below the piping member 2. On the other hand, the base-side region (lower region) of the branch piping section 8 is shaped to extend directly above the piping member 1, but interference between the branch piping section 8 and the piping member 2 is avoided based on the aforementioned offset. The fact that the base-side region of the branch piping section 8 in Figure 2(b) is inclined and bent will be discussed later.

[0035] Next, the operation of the hot water supply system A equipped with the aforementioned piping system B will be explained.

[0036] In this hot water supply system A, the mounting position of the piping member 1 in the front-rear direction of the frame 4 can be changed by selecting either the first or second mounting configuration shown in Figures 2(a) and 2(b), respectively, which utilizes the bracket 6 to mount the piping member 1. Therefore, it is suitable for applications where the position of the piping member 1 may need to be changed, and offers excellent flexibility.

[0037] When setting the piping member 1 in either the first or second mounting configuration, it is necessary to fasten (and unfasten) the U-bolt 7 using an appropriate tool. In contrast, the extended portion 63 of the bracket 6 to which the U-bolt 7 is fastened is the part that extends in the lateral direction of the frame 4 from the pair of legs 61, and the U-bolt 7 and its nut 70 are not located in the area between the pair of legs 61. Therefore, the pair of legs 61 can be avoided when fastening the U-bolt 7.

[0038] Figure 5 shows the proportional relationship with this embodiment (elements identical or similar to those in this embodiment are denoted by the same reference numerals. This also applies to Figures 6 and 7, which will be described later). Bracket 6e of proportionality 1 in Figure 5 (a bracket not included in the technical scope of the present invention) The bracket 6e does not have an extension portion 63. A portion of either the U-bolt 7 or the nut 70 fixed to the pipe mounting plate portion 62 of the bracket 6e is located in the area between the pair of legs 61. With this proportional configuration 1, the pair of legs 61 get in the way when fastening the U-bolt 7 and the nut 70. In contrast, this embodiment eliminates such problems and facilitates the installation of the piping member 1.

[0039] Figures 6 and 7 show the proportional relationship 2 with this embodiment. In this proportional relationship 2 hot water supply system Af (piping system Bf), the piping member 1 attached to the bracket 6f (a bracket not included in the technical scope of the present invention) is positioned to overlap the area directly below the piping member 2. For this reason, the area near the base of the branch piping section 8 has an inclined section 83 so as not to interfere with the piping member 2, as shown in Figures 6 and 7(a), and extends diagonally upward and forward from the piping member 1 to the support frame 4. In contrast, in this embodiment, when the first mounting configuration shown in Figure 2(a) is set, as described above, the area of ​​the branch piping section 8 closer to the base extends directly upward from the piping member 1 while avoiding undue interference with the piping member 2. Unlike proportionality 2, there is no need to provide an inclined section 83 in the branch piping section 8, which simplifies the configuration of the branch piping section 8 and facilitates piping installation work.

[0040] Furthermore, with the proportional 2 configuration, if the piping member 1 is reversed left and right from the state shown in Figure 6, and the oil filter 92 is set to hang downwards below the piping member 1, the orientation of the inclined portion 83 of the branch piping section 8 will be reversed, as shown in Figure 7(b). As a result, there is a risk that the branch piping section 8 may improperly interfere with the frame 4 (for example, the rear panel 47 of the frame 4) at the location indicated by the symbol Na in the same figure. In contrast, in this embodiment, as shown in Figure 2(a), the base region of the branch piping section 8 extends directly above the piping member 1. Therefore, when the piping member 1 is reversed left and right compared to the state shown in Figure 1, the branch piping section 8 does not tilt towards the support frame 4. Thus, unlike proportionality 2, improper interference of the branch piping section 8 with the support frame 4 is appropriately avoided.

[0041] Furthermore, if the hot water supply system Af described in Proportional Relations 2 is an existing system, and for some reason you want to replace the piping member 1 or bracket 6f with a new one, then instead of bracket 6f, you can use bracket 6 and set the piping member 1 in the second mounting configuration shown in Figure 2(b). In this second mounting configuration, it is possible to set the position of the piping member 1 in the same arrangement as the piping member 1 shown in Figure 7(a) of Proportional Relations 2.

[0042] The present invention is not limited to the embodiments described above. The specific configurations of the piping system, hot water supply system, and brackets according to the present invention can be modified in various ways within the scope intended by the present invention.

[0043] The bracket does not necessarily have to have a pair of legs; for example, it can be configured to have only one of the pair of legs 61 in the embodiment. The specific size (width dimension La, etc.) and shape of the extension portion of the bracket are also not limited. In addition to U-bolts, various other fastening materials such as U-belts, Ω-shaped fittings, or other components can be used to secure piping components to the bracket. The specific types of "piping members" and "additional piping members" described in the claims of the present invention are not limited, and they are not limited to oil supply or hot water circulation. The piping system in this invention can also be used to construct systems other than hot water supply systems. The hot water supply system in this invention can also be configured as a system equipped with, for example, a gas water heater instead of an oil water heater. [Explanation of Symbols]

[0044] A Hot water supply system B Piping System 1. Piping components 2. Piping components (additional piping components) 4. Stand 5. Water heater (equipment) 6 brackets 60 Mounting section for the frame 61 Legs 62 Pipe mounting plate section 63 Extension section 63a Front section (extended section) 63 hours Rear section (extended section) 7 U-bolt (fixing member) 8 Branch piping section

Claims

1. A frame having width in the vertical height direction and the horizontal width direction, A piping member attached to the frame via a bracket so as to extend in the width direction, It is equipped with, The bracket comprises a mounting portion that is attached and fixed to the frame, a leg portion that protrudes forward from the mounting portion to the frame, and a pipe mounting plate portion connected to the tip of the leg portion, in a piping system. The pipe mounting plate portion of the bracket has a front portion and a rear portion that extend further in the width direction than the leg portion and face the front-rear direction of the frame, and is provided with an extended portion to which a fixing member for fixing the pipe member is attached. A piping system characterized in that, as a mounting configuration for the piping member to the bracket, one of two configurations can be selectively set: a first mounting configuration in which the piping member is positioned on the front side of the extension, and a second mounting configuration in which the piping member is positioned on the rear side of the extension.

2. A piping system according to claim 1, The aforementioned bracket is The aforementioned mounting section includes a pair of mounting sections that are spaced apart in the vertical direction of the frame, The aforementioned legs are provided with a pair of legs that protrude from the pair of mounting parts of the frame toward the front of the frame and are spaced apart from each other. The aforementioned pipe mounting plate is connected in a bridging manner between the tips of the pair of legs, A piping system in which, when the second mounting configuration is set, the piping member penetrates the area between the pair of legs, and the fixing member is in a position retracted from the area between the pair of legs.

3. A piping system according to claim 1, The aforementioned mounting frame allows for the installation of desired equipment at a position above the aforementioned piping member. An additional piping member is mounted on the frame so as to be positioned between the aforementioned equipment and the aforementioned piping member and to extend in the lateral direction, A branch piping section is connected to the aforementioned piping member, extends upward from the aforementioned piping member, passes in front of the additional piping member, and has its upper end connected to the equipment, It also has the following features: In a piping system in which the piping member is set to the first mounting configuration, the piping member is located in a position offset forward of the support frame from the area directly below the additional piping member.

4. The piping system according to claim 3, The aforementioned piping member is for oil circulation and is equipped with an oil filter that hangs down from the piping member. In a piping system in which, when the piping member is set to the first mounting configuration, the base region of the branch piping section extends directly above the piping member, and interference between the branch piping section and the additional piping member can be avoided even when the piping member is mounted on the frame in a left-right inverted state.

5. The piping system according to claim 3, When the piping member is set to the second mounting configuration, the piping member is positioned overlapping the area directly below the additional piping member, and the area near the base of the branch piping section is positioned diagonally upward and forward from the piping member to the support frame so as not to interfere with the additional piping member. A piping system extending towards [location].

6. A piping system according to any one of claims 1 to 5, At least one water heater is mounted on the aforementioned frame of this piping system, A hot water supply system characterized by having the following features.

7. A bracket for attaching a piping member to a desired mounting frame, It comprises a mounting portion that is attached and fixed to the aforementioned frame, a leg portion that protrudes forward from the mounting portion of the frame, and a pipe mounting plate portion connected to the tip of the leg portion. The pipe mounting plate portion has a front portion and a rear portion that extend in the width direction beyond the leg portion and face the front-rear direction of the frame, and is provided with an extended portion to which a fixing member for fixing the pipe member is attached. A bracket characterized in that, as an attachment method for the piping member to the bracket, one of two options can be selected: a first attachment method in which the piping member is positioned on the front side of the extension, and a second attachment method in which the piping member is positioned on the rear side of the extension.

Images