JP2018179435A - Water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water heater that allows an electrical part such as an ignitor to be installed in a readily accessible position even when there is enough space inside a housing, and allows easy wiring work and state confirmation.SOLUTION: A water heater 1 includes: a housing 2 which stores a combustion device 8 and has an opened front face 2a; and a cover for blocking the opening 2a of the housing 2. A support member 23 parallel to the opening 2a is provided on a side of the opening 2a of the housing 2. Predetermined electrical parts (ignitor 30 and monitor substrate 34) are installed at a face on a side of the opening 2a of the support member 23.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a water heater which houses a combustion apparatus or the like and heats the water flowing therethrough to discharge the water.

For example, as disclosed in Patent Document 1, the water heater includes a burner and a gas pipe connected to the burner, a proportional valve, an igniter, a flame rod, a heat exchanger, a water supply pipe and a hot water discharge pipe connected to the heat exchanger, and the like. Is equipped.
These combustion devices, pipes, electrical components and the like are housed, for example, in a housing whose front surface is opened, and the front surface is closed by a front cover.

JP, 2014-25664, A

  Electrical components such as igniters are preferably installed in a position where they can be easily accessed in the housing for wiring work, status confirmation, and the like. However, due to the miniaturization of the casing, most of the space in the casing is occupied by the combustion device, piping, etc., and it may not be possible to install the electrical components at a position where it can be easily accessed.

  Therefore, the present invention can provide a water heater which can arrange electrical components such as an igniter easily at an accessible position even when there is not enough space in the case, and can easily perform wiring work, status confirmation and the like. Purpose.

In order to achieve the above object, the invention according to claim 1 is a water heater including a housing which accommodates a combustion apparatus and opens a predetermined surface, and a cover which closes the opening of the housing. There,
A support member parallel to the opening is provided on the opening side of the housing, and a predetermined electrical component is installed on a surface on the opening side of the support member.
The invention according to a second aspect is characterized in that, in the configuration according to the first aspect, the support member is bridged between a nozzle base of a burner provided in the combustion apparatus and a housing.
The invention according to claim 3 is characterized in that, in the configuration according to claim 1 or 2, the electric component includes at least an igniter.

According to the first aspect of the present invention, the support member parallel to the opening is provided on the opening side of the housing, and a predetermined electrical component is installed on the surface on the opening side of the support member. Even when there is not enough space, electrical components such as an igniter can be disposed at a position where access is easy. Therefore, the wiring operation and the state confirmation of the electrical component can be easily performed.
According to the second aspect of the invention, in addition to the effect of the first aspect, the support member is constructed between the nozzle stand and the housing, whereby the wiring operation and the like can be performed more easily at a position near the burner. be able to.
According to the third aspect of the invention, in addition to the effect of the first or second aspect, the igniter can be installed at an optimum position by at least making the electric component an igniter.

It is a perspective view of a water heater. It is a perspective view of the housing | casing which removed the front cover. It is an expansion perspective view of the installation part of a supporting member. It is a side view of a case where a front cover was removed.

Hereinafter, embodiments of the present invention will be described based on the drawings.
FIG. 1 is a perspective view showing an example of a water heater, and FIG. 2 is a perspective view of a housing with a front cover removed.
The water heater 1 has an opening 2a on the front surface, and a front 2 that closes the front surface of the housing 2 in the form of a vertically elongated box 2 formed of a top plate 3 and bottom plates 4, left and right side plates 5 and 5, and back plates 6. A cover 7 is provided. Components such as a combustion unit 9 having a burner, a heat exchange unit 10 having a heat exchanger, and a combustion apparatus 8 including an exhaust unit 11 are accommodated in the housing 2 and front covers are provided on four sides of the opening 2a. The flanges 12, 12... For mounting of 7 are formed to be folded outward. Screw holes 13 and 13 for attaching the front cover 7 are formed in the upper and lower flanges 12 and 12. Reference numerals 14 and 14 denote installation brackets attached to the upper and lower sides of the back plate 6.

The front cover 7 is a vertically-long rectangular shape having substantially the same shape as the housing 2 in a front view, and the entire outer periphery 15 fitted to the front including the flanges 12, 12. It has a bulging portion 16 having a longitudinally long rectangular shape in a front view and bulging forward, and has a thickness in front and back. A long hole 17 is formed on the front upper side of the bulging portion 16 into which a horizontally long exhaust port 11a provided on the front side of the exhausting portion 11 is fitted. In the front lower side and the side, intake holes 18, 18.・ Is formed.
In addition, a window 19 for visualizing a monitor 37 (described later) provided in the inside of the housing 2 is formed in the lower part of the bulging portion 16, and a sealing material (not shown) is attached around the back side of the window 19. It is done.

  On the other hand, the combustion unit 9 includes, on the front side, a metal nozzle base 20 having a plurality of nozzles for supplying fuel gas to the burner, and in the housing 2 below the nozzle base 20, the combustion part A fan 21 for supplying combustion air to 9 and a controller 22 provided with an electrical component board are provided. A gas pipe connected to the nozzle stand 20 and a pipe connected to the heat exchange unit 10 are connected to an external pipe via the bottom plate 4 below the nozzle stand 20.

  A support member 23 is bridged between the nozzle stand 20 and the bottom plate 4. As shown in FIG. 3, the support member 23 is a strip-like metal plate extending in the vertical direction, and on the upper side, an upper support portion 24 which recedes slightly back than the opening 2 a of the housing 2, and the opening 2 a The lower supporting portion 25 which is substantially flush with the lower supporting portion 25 is formed to have a level difference in the front and back. At the upper end of the upper support portion 24, an upper mounting piece 26 having a engagement recess 27 which is screwed to the front surface of the nozzle table 20 and engaged with the projection 20a protruding on the front surface is bent. ing. On the other hand, at the lower end of the lower support portion 25, there is a step-like locking portion 28 a that is locked to the bending side of the lower flange portion 12 of the bottom plate 4, and the lower lock is suspended along the flange portion 12. The piece 28 is bent. The lower locking piece 28 is formed with a notch 29 which does not interfere with the screw hole 13.

  The igniter 30 as an electrical component is attached to the front surface of the upper side support part 24 among the support members 23. As shown in FIG. Here, in the upper support portion 24, the receiving piece 31 is formed by cutting and raising in the forward direction, and with the igniter 30 mounted on the receiving piece 31 in the lateral direction, the screwing piece 32 provided on the upper portion is the upper support portion 24. The igniter 30 is fixed by screwing into the screw. Below the igniter 30 and on the front surface of the upper support portion 24, a cable clip 33 for fixing a wire on the front side of the upper support portion 24 is provided.

  Further, on the front surface of the lower support portion 25, a monitor board 34 as an electrical component is attached. The monitor substrate 34 accommodates a substrate 36 on which electronic components such as a monitor 37 consisting of a 7-segment display are mounted in a case 35 having an opening on the front surface, and a screwing piece 38 provided on the top of the case 35 The monitor substrate 34 is fixed by being screwed into the lower support 25. The monitor board 34 displays an instrument state such as an error code or the like on the monitor 37 in response to an instruction from the controller 22. The monitor 37 is arranged corresponding to the position of the window 19 of the front cover 7.

  In the water heater 1 configured as described above, after the components such as the combustion device 8 are accommodated in the housing 2, the support member 23 to which the igniter 30 and the monitor substrate 34 are attached, the nozzle stand 20 and the bottom plate 4 The upper mounting piece 26 is screwed to the nozzle base 20 in a state in which the engaging recess 27 is engaged with the projection 20a. Then, the support member 23 to which the upper mounting piece 26 is fixed is adapted to hang downward from the nozzle stand 20, and the locking portion 28a of the lower locking piece 28 is locked to the bottom plate 4 and positioned in front of the flange portion 12. . Therefore, the wiring work etc. to the nozzle stand 20 and the controller 22 can be performed easily.

Thereafter, the front cover 7 is covered on the front surface of the housing 2 and screwed to the flanges 12 and 12, the lower locking piece 28 is held between the front cover 7 and the lower flange 12 to support the support member. The reference numeral 23 is fixed in the housing 2 in parallel with the opening 2a. Since the nozzle stand 20 and the support member 23 are made of conductive metal, grounding can be ensured through the same metal case 2.
Thus, when the front cover 7 is fixed, the monitor 37 of the monitor substrate 34 is in close contact with the window 19 of the front cover 7 from the back side. Therefore, the monitor 37 can be visually recognized from the outside through the window 19.
On the other hand, when performing maintenance and status confirmation of the igniter 30 and the monitor substrate 34, if the front cover 7 is removed, the igniter 30 and the monitor substrate 34 project forward from the opening 2a of the housing 2 as shown in FIG. Therefore, maintenance work and status confirmation can be easily performed.

  As described above, according to the water heater 1 of the above embodiment, the support member 23 parallel to the opening 2 a is provided on the opening 2 a side of the housing 2, and the surface of the support member 23 on the opening 2 a side is predetermined. Since the electric components (in this case, the igniter 30 and the monitor board 34) are installed, even if there is not enough space in the housing 2, the electric components such as the igniter 30 can be arranged at easy access positions. . Therefore, the wiring operation of an electrical component, state confirmation, etc. can be performed easily.

In particular, here, since the support member 23 is bridged between the nozzle stand 20 of the burner provided in the combustion apparatus 8 and the housing 2, wiring can be performed more easily at a position near the burner. it can.
In addition, since the electrical components include at least the igniter 30, the igniter 30 can be installed at an optimum position.

  In the above-described embodiment, the support member is mounted in the vertical direction. However, depending on the space in the housing, the support member may be in the horizontal direction or in an oblique direction. Therefore, it is possible to bridge not only between the nozzle stand and the bottom plate but also between the left and right side plates or between the side plates and the bottom plate. Fixing of the support member and means other than screwing can be adopted, and it is also conceivable to hold both ends between the front cover and the housing after positioning such as unevenness without screwing. Further, the supporting member may be cantilevered by a housing or a combustion device, not limited to the installation.

Also in the shape of the support member itself, the level difference between the upper side support and the lower side support may be reversed, and the shape is not limited to a band plate having a level difference. It can be changed as appropriate, such as a triangle shape or a rod shape to be erected.
Furthermore, the electrical components are not limited to the igniter and the monitor substrate, and a part of the electrical substrate of the controller may be divided and provided, and the configuration is not limited to the above. Of course, three or more of the electrical components can be installed on the support member, or a plurality of support members can be provided for each of the electrical components.

  And in the above-mentioned form, although it is set as the structure which provides a supporting member in the opening formed in the front of a case, an opening is not restricted to the front of a case but a supporting member even if it is other surfaces, such as a side of a case. The present invention can be adopted even if the cover can be installed and the cover is not removed but is hinged.

  1 · · Water heater, 2 · · Casing, 2a · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Holes 19 windows 20 nozzle bases 20a protrusions 21 fans 22 controllers 23 support members 24 upper support portions 25 lower support portions 26 · · · · · · Upper mounting piece, 28 · · lower locking piece, 30 · · igniter, 31 · · · · · · · · · · · · · · · · · · · · · · · · · · monitor board, 37 · · · monitor.

Claims (3)

A water heater comprising: a housing that houses a combustion device and opens a predetermined surface; and a cover that closes the opening of the housing,
While the supporting member parallel to the said opening is provided in the said opening side in the said housing | casing, The predetermined | prescribed electrical component is installed in the surface by the side of the said opening of the said supporting member .   The water heater according to claim 1, wherein the support member is bridged between a nozzle base of a burner provided in the combustion apparatus and the housing.   The water heater according to claim 1, wherein the electric component includes at least an igniter.

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