JP2004044972A - Combined hot water supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce an installation space of a combined hot water supply device and to improve the earthquake protection in a case when a hot water supply device is configurated by combining a plurality of general purpose hot water supply units. <P>SOLUTION: This combined hot-water supply device is configurated by selectively combining at least one of a first auxiliary hot water supply device 10b provided with a first auxiliary hot water supply unit 3b on a first auxiliary frame 2b having the shape same as a main frame, and a second auxiliary hot water supply device 10 provided with a second auxiliary hot water supply unit 3c on a cubic second auxiliary frame 3c having a lateral width and a height same as those of the main frame, to a main hot water supply device 10a provided with a main hot water supply unit 3a on the cubic main frame 2a. The frames are respectively provided with at least one piping piece of a main gas pipe piece 62, a main water pipe piece 42 and a joined tapping pipe piece 52, and the piping pieces are connected through flexible pipes 40, 50. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connected hot water supply device configured by arranging a plurality of hot water heaters in parallel.
[0002]
[Prior art]
When using a water heater for equipment that needs to supply hot water to a number of places such as hotels and general hospitals as appropriate, the hot water supply capacity of the water heater is designed with a margin assuming that it will be used at all hot water supply points at the same time .
[0003]
In this case, a large water heater can be newly designed and manufactured, but the minimum amount of working water that does not overheat the heat exchanger with the minimum amount of heating increases, and it cannot be used when the amount of hot water is small. . For this reason, it is preferable to connect several general-purpose small-sized water heaters to form a connected water heater.
[0004]
Such a connected hot-water supply device is known, for example, from Japanese Patent No. 2767500. As a general-purpose water heater, for example, a housing is provided, a heat exchanger is provided in the housing, and a water supply pipe for supplying clean water to the heat exchanger and a tapping pipe are connected. A gas pipe that supplies fuel gas is connected to a gas burner that is a heat source of the heat exchanger. The other ends of these pipes are connected to pipe connection parts provided on the lower surface of the housing. Then, the number of hot water heaters to be used is determined according to the required hot water supply capacity.
[0005]
When installing a connected hot water supply apparatus, a gantry frame having a T-shaped cross section is installed at a predetermined location according to the number of water heaters to be used. In this case, two water heaters can be mounted side by side on the front and back of the upper portion of the gantry frame.
[0006]
After attaching the water heater to the gantry frame, at the bottom of the gantry frame, a pipe-shaped original water pipe connected to a water source, a pipe-shaped combined outflow hot water pipe connected to each hot water supply point, and a pipe-shaped original gas pipe connected to a gas source Install each piping. After connecting the branch water supply pipe, the branch hot water pipe, and the branch gas pipe between each pipe connection part of each water heater and each pipe, necessary electric wiring and the like are performed.
[0007]
[Problems to be solved by the invention]
In the above, when four or more water heaters are used, another gantry frame is juxtaposed, and a predetermined number of water heaters are further attached to the gantry frame to constitute a combined hot water heater. In this case, the respective pipes of the main water supply pipe, the combined outflow hot water pipe and the main gas pipe provided on the lower side of the gantry frame are connected via joints, or one long pipe is distributed by bridging each frame. Is established.
[0008]
However, in this case, for example, when an earthquake occurs and the vibration is applied to, for example, a joint or a pipe, a stress is directly applied to the joint or the pipe, which may cause a seal failure at the joint or damage the pipe.
[0009]
Also, since a plurality of heavy water heaters are mounted on the upper part of the gantry frame having a T-shaped cross section, it is necessary to increase the installation area of the gantry frame, for example, in order to make the gantry frame have earthquake resistance. There was a problem of being larger.
[0010]
In view of the above, it is an object of the present invention to provide a connected hot water supply apparatus that can reduce the installation space and has excellent earthquake resistance.
[0011]
[Means for Solving the Problems]
In order to solve this problem, a connected hot water supply device of the present invention includes a main hot water supply device having a main hot water supply device provided on a rectangular parallelepiped main base, and the main hot water supply device has a first shape having the same shape as the main base. A first auxiliary hot water supply device provided with a first auxiliary hot water supply device on a support base, which can be installed side by side with the main hot water supply device; and a second rectangular parallelepiped having the same width and height as the main mount. At least one selected from a second hot water supply device having a second hot water supply device provided on a pedestal stand, which can be installed side by side on the back of the main hot water supply device and the first hot water supply device, and A hot water supply device which is connected closely to the hot water supply and has a required hot water supply capacity, wherein heating of the heat exchangers of the main water heater, the first sub water heater and the second sub water heater is provided inside each of the mounts. Original gas pipe piece connected to one end of the gas pipe that supplies fuel gas to the means, water supply to the heat exchanger At least one of a main water pipe piece connected to one end of the pipe and a combined water pipe piece connected to one end of a tapping pipe from the heat exchanger. It is characterized by being connected via a pipe.
[0012]
According to the present invention, the required hot water supply capacity is calculated assuming that the hot water supply units are used simultaneously in all the hot water supply locations, and the number of slave hot water supply devices connected to the main hot water supply device is determined. At the installation site, the main hot water supply device is first installed, and a single hot water supply device is connected to the main hot water supply device.
[0013]
At this time, the main gantry and the first sub gantry are brought into close contact with each other and the hot water supply devices are connected. After connecting the subordinate hot water supply devices, one of the original gas pipe pieces, the original water pipe pieces, and the combined outflow hot water pipe pieces provided inside each stand is connected to each of the pipe pieces via a flexible flexible pipe.
[0014]
In this case, since the flexible pipe exists between the respective pipe pieces, even if an earthquake occurs, for example, the vibration can be absorbed by the flexible pipe, and unnecessary stress is not applied to each pipe.
[0015]
Next, the necessary hot water supply device is connected in the same procedure. In this case, since each stand only needs to support one water heater, it is not necessary to increase the installation area more than necessary. In addition, since the mounts are installed close to each other, the connected hot water supply apparatus itself can have a sense of unity.
[0016]
In this case, if the first, second, and third gantry are fastened to each other via the fastening means, the stability of each gantry is increased, and the earthquake resistance can be further improved.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Referring to FIGS. 1 to 4, reference numeral 1 denotes a connected hot water supply apparatus of the present invention configured by connecting general-purpose water heaters. The connected hot water supply device 1 has a main hot water supply device 10a. The main hot water supply device 10a has a rectangular parallelepiped main gantry 2a composed of a quadrangular prism frame, and a top plate 21a provided on the upper surface thereof is formed as a mounting portion of a water heater. A main water heater 3a, which is a small water heater (for example, No. 50), is mounted.
[0018]
On one side of the main hot water supply device 10a (the right side in FIG. 2 in the present embodiment), two first subordinate hot water supply devices 10b are connected side by side. The first auxiliary hot water supply device 10b has a first auxiliary gantry 2b having the same form as the main gantry 2a, and a first auxiliary hot water supply having the same hot water supply capability as the main hot water heater 3a is provided on the top plate 21b serving as a mounting portion. Each of the containers 3b is placed.
[0019]
One second hot water supply device 10c is connected to the back surface of the first hot water supply device 10b located at one end. The second subordinate hot water supply device 10c has a rectangular parallelepiped second subordinate base 2c formed of a quadrangular prism frame so as to have the same width and height as the main mount 2a, and a top plate 21c provided on the upper surface thereof. A second sub water heater 3c having the same hot water supply capability as the main water heater 3a is placed facing the main water heater 3a.
[0020]
In this case, the main hot water supply device 10a, the first auxiliary hot water supply device 10b, and the second auxiliary hot water supply device 10c are connected so that the main gantry 2a, the first auxiliary gantry 2b, and the second auxiliary gantry 2c are in close contact with each other. Note that, for example, a heat insulating material may be provided at a place where the main gantry 2a, the first sub gantry 2b, and the second sub gantry 2c are in close contact with each other to improve airtightness.
[0021]
The main water heater 3a and the first and second sub water heaters 3b, 3c each have a housing 31 in which a heat exchanger (not shown) having a gas burner as a heating source is provided. ) Is provided.
[0022]
A water supply pipe for supplying tap water and a tapping pipe are respectively connected to the heat exchanger, and a gas pipe for supplying fuel gas via a proportional valve is connected to the gas burner. The other ends of these pipes are connected to pipe connection parts 22a, 22b, and 22c provided through the lower surface of the housing 21, respectively.
[0023]
Here, after the first and second subordinate hot water supply devices 10b and 10c are connected to the main hot water supply device 10a, the main hot water supply pipe 4 connected to the water source, the combined outflow hot water pipe 5 leading to each hot water supply point P, and the gas source are connected to the main hot water supply device 10a. Each pipe of the connected original gas pipe 6 is installed, and a branch water supply pipe 41, a branch tapping pipe 51, and a branch gas pipe 61 are provided between the pipes 4, 5, and 6 and the pipe connection parts 22 a, 22 b, and 22 c. It is necessary to connect with each.
[0024]
In this case, in the internal space (first space) of the main gantry 2a and the first and second sub gantry 2b, 2c, all the pipes of the original water supply pipe 4, the combined outflow hot water pipe 5, and the original gas pipe 6 are arranged. In such a case, the work space becomes narrow, and the connection work becomes troublesome.
[0025]
In the present embodiment, the areas of the top plates 21a and 21b of the main gantry 2a and the first sub gantry 2b are set larger than the areas of the lower surfaces of the housings 31 of the main water heater 3a and the first sub water heater 3b. When the main water heater 3a and the first water heater 3b are respectively mounted on the gantry 2a and the first water heater 2b, at least one pipe 4, 5 is provided on the back of the main water heater 3a and the first water heater 3b. , 6 are arranged on the front side of the top plates 21a, 21b so as to form a second space (see FIGS. 2 and 3). Portions of the top plates 21a and 21b other than the placement portion located on the front side were used as piping arrangement portions.
[0026]
In this case, for example, it is preferable to dispose the source gas pipe 6 in the space, in which it is difficult to confirm the sealing failure at each of the pipe connection parts 22a, 22b, 22c.
[0027]
The area of the top plate 21c of the second base 2c is larger than the area of the lower surface of the housing 31 of the second water heater 3c, but the top plate 21b of the first base 2b is reduced in order to reduce the installation area of the connected hot water supply device 1. Is set smaller than the area of the second sub-water heater 3c, and the third space that enables the branch gas pipe 61 to be connected to the original gas pipe 6 when the second sub-water heater 3c is mounted on the second sub-mount 2c is the second sub-water heater 3c. The mounting portion was arranged on the front side of the top plate 21c so as to be formed on the back surface of the top plate (see FIG. 3). The portion excluding the mounting portion located on the front side of the top plate 21c was defined as a piping arrangement portion.
[0028]
Further, a support member 23 having a substantially I-shaped cross section is provided at a predetermined position of the mounting portion of the main gantry 2a, the first sub gantry 2b, and the second sub gantry 2c, and the main water heater 3a and the first water heater are provided. 3b and the second subordinate water heater 3c are fixed to the support member 23 together with the top plates 21a, 21b, 21c (see FIG. 4).
[0029]
At substantially the center of each piping arrangement portion of the main gantry 2a, the first gantry 2b, and the second gantry 2c, a joint portion 24 is provided to penetrate the top plate 21. In the joint portion 24, a branch gas pipe 61 branched from the original gas pipe 6 provided in the second space and internal spaces of the main gantry 2a, the first gantry 2b, and the second gantry 2c are arranged. A connection pipe 62 that allows connection to the fuel gas pipe connection portion 22c on the lower surface of the housing 31 is connected.
[0030]
Thereby, the connection work of one end of the branch gas pipe 61 to the original gas pipe 6 can be performed in another wide place, so that the pipe connection work can be further speeded up.
[0031]
Two piping support members 25 are also arranged at predetermined intervals in the piping arrangement portions of the main gantry 2a and the first sub gantry 2b. The pipe support member 25 has a U-shaped tip corresponding to the outer shape of the original gas pipe 6 and supports the original gas pipe 6. In addition, a screw hole is provided on the top surface of the distal end portion of the pipe support member 25, and after the original gas pipe 6 is placed on the pipe support member 25, the original gas pipe 6 can be fixed using a U bolt.
[0032]
Here, if the main water supply pipe 4 and the combined outflow hot water pipe 5 are installed in the internal space of the main gantry 2a, the first sub gantry 2b, and the second sub gantry 2c at the installation location of the connection hot water supply apparatus 1, the installation work is required. It becomes troublesome. In the present embodiment, the main water supply pipe 4 and the combined outflow hot water pipe 5 are provided in the internal spaces of the main gantry 2a, the first sub gantry 2b, and the second gantry 2c so that the piping work can be performed efficiently. A pipe piece 42 and a combined outflow hot water pipe piece 52 are provided.
[0033]
In this case, the original water supply pipe piece 42 and the combined outflow hot water pipe piece 52 are suspended by a branch water supply pipe 41 and a branch hot water pipe 51 each having one end connected to the pipe connection portions 22a, 22b for water supply and tapping of each water heater. ing.
[0034]
Here, if the original water supply pipe 4 and the combined outflow hot water pipe 5 are installed in the internal space of each of the gantry 2a, 2b, 2c at the installation location of the connection hot water supply apparatus 1, the installation work becomes troublesome. In the present embodiment, the original water supply pipe 4 and the combined outflow pipe 5 are configured in the internal spaces of the first, second, and third gantry 2a, 2b, and 2c so that the pipe work can be performed efficiently. A water supply pipe piece 42 and a combined outflow hot water pipe piece 52 are provided.
[0035]
In this case, the water supply pipe piece 42 and the combined outflow hot water pipe piece 52 are suspended by a branch water supply pipe 41 and a branch hot water pipe 51, one ends of which are connected to the pipe connection portions 22a and 22b for water supply and tapping of each water heater. I have.
[0036]
Here, when each water supply pipe piece 42 and each combined outflow hot water pipe piece 52 are connected to each other with a pipe-like pipe having rigidity, for example, when an earthquake occurs, stress is applied to the joints and pipes, resulting in poor sealing at the connection portion. Or the piping may be damaged.
[0037]
In the present embodiment, after each of the gantry 2a, 2b, 2c is brought into close contact with each of the hot water supply devices 10a, 10b, 10c, each of the water supply pipe pieces 42 and each of the combined outflow hot water pipe pieces 52 are connected to the flexible pipe 40, It was decided to connect via 50.
[0038]
Thereby, even if an earthquake occurs, the vibration can be absorbed by the flexible pipes 40 and 50, and unnecessary stress is not applied.
[0039]
When connecting the plurality of first and second water heaters 10b and 10c to the main water heater 10a, there is no need to stock a plurality of connecting parts such as pipes having different lengths, for example. For example, the management becomes easy.
[0040]
At the time of shipment, a blind plate (not shown) is attached to the other ends of the pipe pieces 42, 52 inside the main gantry 2a, and each pipe provided inside the first and second sub gantry 2b, 2c. Both ends of the pieces 42 and 52 are open.
[0041]
Referring to FIG. 5, decorative panels 26a, 26b, which maintain the airtightness of the inside of the gantry 2a, are provided on the front, both sides and the back of the main gantry 2a at the shipping stage in order to reduce the number of parts and reduce the cost. 26c is mounted. Decorative panels 26a and 26c are mounted on the front and back surfaces of the first gantry 2b.
[0042]
In this case, the front panels of the main gantry 2a and the first sub gantry 2b and the decorative panels 26a, 26b on both sides of the main gantry 2a are detachable. One end of the decorative panel 26b on the side of the main base 2a to which the first subordinate hot water supply device 10b is connected is removed, and after the first subordinate hot water supply device 10b is connected, the removed decorative panel 26b is attached to the open side surface of the first subordinate base 2b. Attach.
[0043]
On the other hand, the second sub-mount 2c of the second sub-water supply device 10c connected to the back surface of the first sub-water supply device 10b has a front surface, both side surfaces, and a back surface that retains the airtightness inside the second sub-water supply device 2c. The panels 26d, 26e, 26f are mounted, and the decorative panels 26d, 26e on the front and both sides thereof are detachable.
[0044]
At the time of connection to the first hot water supply device 10b, the decorative panels 26c, 26f of the first and second gantry 2b, 2c are installed in close contact with each other. In this case, the decorative panels 26c and 26f on the rear side of the main frame 2a, the first frame 2b and the second sub-frame 2c are formed with openings 26g having a predetermined area so that the flexible tubes 40 and 50 can be piped. At the stage, a blind plate 26h is mounted on the opening 26g.
[0045]
When a plurality of second subordinate hot water supply devices 10c are connected, the side panel 26e is connected to only one second subordinate hot plate 2c as in the case of connecting the first subordinate hot water supply device 10b to the main hot water supply device 10a. You may make it attach.
[0046]
One end of the main water supply pipe piece 42 and one end of the combined outflow hot water pipe piece 52 provided on the main gantry 2a are provided so as to penetrate from one side plate (the right side in FIG. 1) of the main gantry 2a. Flanges 43 and 53 may be provided at the ends. Thereby, the connection work of the main water supply pipe 4 and the combined hot water pipe 5 can be performed outside the main gantry 2a.
[0047]
By the way, it is preferable that hot water can be directly supplied even when there is a distance of a tapping pipe from the connected hot water supply device 1 to a tapping point. In the present embodiment, a circulating pump 71 and an expansion tank 72 are provided on the main gantry 2a, and the circulating pump 71 and the expansion tank 72 are connected to the respective pipe pieces 42 and 52.
[0048]
In addition, the main gantry 2a, the first gantry 2b, and the second gantry 2c need to be fixed using anchor bolts or the like at an installation location in preparation for, for example, an earthquake. In this case, it is often difficult to fix the main gantry 2a, the first sub gantry 2b, and the second sub gantry 2c closely to each other and then fix them with the anchor bolts.
[0049]
In the present embodiment, as shown in FIG. 6, a second base frame 81 that enables the main base 2a and one of the first sub-bases 2b to be installed close to each other, and the other first sub-base 2b The connected hot water supply apparatus 1 is installed using the third base frame 82 that enables the installation to be in close contact with the second gantry 2c.
[0050]
In this case, two fixing plates 27a are provided at both lateral ends of the bottom surfaces of the main gantry 2a and the first sub gantry 2b so as to protrude in the front-rear direction. Two fixing plates 27b are provided so as to protrude only toward the side of the secondary water heater 3c. Holes 28 having a predetermined diameter are formed at both ends in the longitudinal direction of the fixing plates 27a and 27b.
[0051]
The second base frame 81 made of metal is formed by combining thin plates into a rectangle, the width W1 of which is substantially equal to the sum of the widths of the main gantry 2a and the first gantry 2b, and the depth dimension L1 of which is fixed plate. The length substantially corresponds to the length of 27a.
[0052]
When the main gantry 2a and the first gantry 2b are installed close to each other, eight fixing bolts 83 projecting upward are provided at positions corresponding to the holes 28 of the fixing plate 27a.
[0053]
The third base frame 82 is also formed by combining thin metal plates in a rectangular shape, the width W2 of the third base frame 82 substantially corresponds to the width of the first or second gantry 2b, 2c, and the depth L2 of the third base frame 82 is the first width. This substantially corresponds to the sum of the depth dimensions of the sub-base 2b and the second sub-base 2c.
[0054]
When the first base 2a and the second base 2c are installed close to each other, six fixing bolts 83 projecting upward are provided at positions corresponding to the six holes 28 provided in the fixing plate 27a. Are provided respectively.
[0055]
When the connection hot water supply device 1 is installed, the fixing bolts 83 are inserted through the holes 28 of the fixing plates 27a and 27b and fastened using, for example, nuts. Thus, the main gantry 2a, the first gantry 2b, and the second gantry 2c can be fixed to the second and third base frames 81, 82.
[0056]
Although the second gantry 2c of the second hot water supply device 10c is fixed to the third base frame 82 only at both ends on the side of the second hot water supply device 3c, for example, the first gantry 2b is in close contact with each other. The second sub-mount 2c will not be unstable if it is fastened to the frame using fixing bolts.
[0057]
In addition, if a first base frame (not shown) of the same form that enables only fixing of the main gantry 2a of the main hot water supply device 10a is added and three types of base frames are prepared, the main hot water supply device 10a can be provided. Even when any one of the first and second hot water supply devices 10b and 10c is connected, a base frame can be laid in advance according to the layout.
[0058]
Next, an installation procedure of the coupled hot water supply device 1 of the present invention will be described with reference to FIGS. First, the necessary hot water supply capacity is calculated assuming that the hot water supply points P are used simultaneously, and the number of first and second subordinate hot water supply apparatuses 10b and 10c connected to the main hot water supply apparatus 10a is determined.
[0059]
Next, the layout of the connected hot water supply device 1 is determined in consideration of the maintenance space at the installation location and the like, and the first and second subordinate hot water supply devices 10b and 10c are allocated accordingly. In the present embodiment, as described above, two first sub-water heaters 10b and one second sub-water heater 10c are connected to main water heater 10a.
[0060]
In this case, the base frames 81 and 82 are selected so as to reduce the number of parts according to the layout. At the installation site of the connection hot water supply device 1, the base frames 81 and 82 are laid side by side along the layout (see FIG. 4), and are fixed using, for example, anchor bolts.
[0061]
Then, the main hot water supply device 10a is installed at one end of the laid second base frame 81 (left side in FIG. 2). In this case, the fixing bolts 83 are installed so as to be inserted through the holes 28 of the fixing plates 27a, and fastened and fixed using nuts. At this time, the blinds are attached to the decorative panel 26b on one side and the pipe pieces 42 and 52 for water supply and hot water supply, and the blind plate is removed.
[0062]
Next, one first hot water supply device 10b is inserted into one side of the main hot water supply device 10a, and four fixing bolts 83 located on the right side of the second base frame 81 are inserted into the holes 28 of each fixing plate 27a. And fix it with a nut. Next, pipes 42 and 52 for water supply and hot water supply of the main hot water supply device 10a and the first subordinate hot water supply device 10b are connected via flexible pipes 40 and 50, respectively.
[0063]
In the same procedure, another first subordinate hot water supply device 10b is installed and fixed to the front side of the third base frame 82. Thereafter, the pipe pieces 42, 52 for water supply and tapping of the first subordinate hot water supply device 10b are connected via flexible pipes 40, 50, respectively.
[0064]
Next, the second sub-water heater 10c and the two fixing bolts 83 on the rear side of the third base frame 82 are inserted into the back surface of the other sub-water heater 10b in the holes 28 of the fixing plate 27b in the same procedure. Then, it is fastened and fixed using a nut (see FIG. 6).
[0065]
In this case, the blind plate 26h is attached to the opening 26g provided in the decorative plates 26c and 26f, and the blind plate 26h is removed. And the pipe pieces 42 and 52 for water supply and tapping between the first and second subordinate water supply devices 10b and 10c are connected to the respective flexible pipes 40 and 50d through the respective openings 26g.
[0066]
In addition, an elbow pipe may be provided between the pipe pieces 42 and 52 for water supply and tapping and the flexible pipes 40 and 50, respectively. A detachable blind plate is attached to the other end of the water supply and tapping pipe pieces 42 and 52 provided on the second sub stand 2c.
[0067]
Next, one original gas pipe 6 is mounted on the pipe support member 25 in the second space formed on the back surface of each of the water heaters 3a and 3b of the main water heater 10a and the first slave water heater 10b arranged in parallel. Place. In this case, one end of the branch gas pipe 61 for the fuel gas is previously added to the source gas pipe 6 at a different location in accordance with the positions of the joint portions 24 of the main gantry 2a, the first gantry 2b, and the second gantry 2c. Connecting.
[0068]
Then, the original gas pipe 6 to which each branch gas pipe 61 is connected at a predetermined interval is placed on the pipe support member 25, and the other end of the branch gas pipe 61 is connected to each joint part 24. The original gas pipe 6 is fixed using bolts. Note that the original gas pipe 6 for which the connection operation has been completed can be covered with a cover.
[0069]
Finally, perform the necessary electrical wiring. In this case, as shown in FIG. 7, a power cable connecting portion 91 may be provided on the support member 23 on the back surface of the main water heater 3a. In this case, an outlet 92 is provided above the power cable connecting portion 91, and a connection plug is provided at the tip of each of the first and second water heaters 2b, 2c of the first and second water heaters 10b, 10c. If the power cable is wired at the time of shipment, the power can be supplied to the first and second subordinate hot water supply devices 10b and 10c only by inserting the plug into the outlet 92. Thus, the electric wiring required only for the main hot water supply device 10a may be performed, and the installation work can be further simplified.
[0070]
In the present embodiment, the main water heater 3a, the first sub water heater 3b, and the second sub water heater 3c have the same hot water supply capacity. However, the present invention is not limited to this. May be different, the hot water supply capacity of each water heater may be different.
[0071]
Further, in the present embodiment, one source gas pipe 6 is installed in the second space. However, in order to further improve earthquake resistance, a pipe piece for the gas pipe constituting the source gas pipe 6 is supported by a pipe. After placing and fixing on the member 24 in advance and connecting the first subordinate hot water supply device 10b to the main hot water supply device 10a, each gas pipe piece may be connected by a flexible pipe.
[0072]
【The invention's effect】
As described above, the combined hot water supply apparatus of the present invention has an effect that the installation space can be reduced, and furthermore, it is excellent in earthquake resistance.
[Brief description of the drawings]
1 is a perspective view of a connected hot water supply apparatus of the present invention; FIG. 2 is a front view of the connected hot water supply apparatus shown in FIG. 1; FIG. 3 is a top view of the connected hot water supply apparatus shown in FIG. 1; FIG. FIG. 5 is a side view of the hot water supply device. FIG. 5 is a perspective view showing each hot water supply device before connecting the hot water supply devices to each other. FIG. 6 is a diagram illustrating the installation of a frame. FIG. Diagram to be explained [Explanation of reference numerals]
DESCRIPTION OF SYMBOLS 1 Connected hot water supply device 2a, 2b, 2c Stand 10a Main hot water supply device 10b 1st secondary hot water supply device 10c 2nd secondary hot water supply device

Claims (2)

A first water heater having a main water heater provided on a rectangular parallelepiped main gantry, wherein the first water heater is provided on the first gantry having the same shape as the main water heater; A hot water supply device which can be installed side by side on one side of the main hot water supply device, and a second sub water heater provided with a second sub water heater on a rectangular parallelepiped second sub stand having the same width and height as the main base. At least one hot water supply device selected from a main hot water supply device and a hot water supply device that can be arranged side by side on the back of the first subordinate hot water supply device is connected so that the respective bases are in close contact with each other, and is connected to a required hot water supply capacity. A water heater,
Inside each of the mounts, a source gas pipe piece connected to one end of a gas pipe for supplying a fuel gas to a heating means of a heat exchanger of the main water heater, the first water heater, and the second water heater, At least one pipe piece of the original water pipe piece connected to one end of the water supply pipe to the exchanger and the combined outflow pipe piece connected to one end of the tapping pipe from the heat exchanger is provided. A connected hot-water supply device connected via a flexible pipe having flexibility. The hot water supply apparatus according to claim 1, wherein the main gantry, the first gantry, and the second gantry are fastened to each other via fastening means.

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