JP2018096547A - Electric case attachment structure of water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric case attachment structure of a water heater capable of attaching an electric case into an exterior case without using a member fixed to the exterior case with welding or a machine screw.SOLUTION: An electric case attachment structure of a water heater 1 is configured to attach an electric case 9 for storing a control substrate, into an exterior case 2 of a hot water supplier 1, and includes: a metal fitting 30 that has a body part 31 positioned on a front side of a neutralizer 7 fixed into the exterior case 2, a contact part 32 contacting with a front face of the neutralizer 7, a locking part 33 locked to a back face of the neutralizer 7, a support part 34 formed at a portion distant from the contact part 32, and a fixation part 35 configured to fix the electric case 9; and an auxiliary metal fitting 40 configured to connect the support part 34 to a burner accessory equipment fitting plate 25 in the exterior case 2.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an attachment structure for mounting an electrical case in an outer case of a hot water apparatus, and more particularly to an attachment structure for attaching the electric case using a predetermined device fixed in the outer case.

  Various equipment, piping, and an electrical case for storing the control board are incorporated in the outer case of the hot water apparatus. Usually, main devices among the devices are assembled in a form of being supported by a support member or a support piece welded to the inner surface of the outer case.

  For example, in the apparatus with an electrical case described in Patent Document 1, a structure is adopted in which the lower end and the upper end of the electrical case are connected and supported by two brackets fixed to the back plate of the exterior case and the inner surface of the side plate, respectively. ing.

  In the hot water device unit described in Patent Document 2, notched recesses are formed in the upper and lower engaging portions of one end of the bracket for mounting the electrical board in the outer case, respectively, and the side plate of the outer case is formed. An engaging member is fixed to the inner surface by welding or the like, and a notch recess is formed in each of the upper and lower engaging portions of the engaging member.

When the bracket with the electrical board is housed in the exterior case, the pair of upper and lower notch recesses on the bracket side is engaged with and supported by the pair of upper and lower notch recesses on the side plate side from the inside of the exterior case.
When positioning the bracket with the electrical circuit board outside the exterior case during maintenance, take out the bracket with the electrical circuit board from the exterior case, and set the upper and lower pair of notches on the bracket side from the exterior case to the upper and lower pair on the side plate side. It is supported by engaging with a notch recess.

JP-A-10-281560 JP 2009-192167 A

Since the conventional exterior case is coated after production, as in Patent Documents 1 and 2, a support member and a support piece for mounting the device can be fixed to the inner surface of the exterior case by welding.
However, as recently, when the exterior case is manufactured using a color steel plate, it is not possible to fix the support member or support piece for attaching the device to the inner surface of the exterior case by welding. It may be difficult to fix and support. If the support member or the support piece is screw-fixed, the design of the external appearance of the exterior case is deteriorated, so that screw fixing cannot be employed.

  An object of the present invention is to provide an electrical case mounting structure for a hot water apparatus that allows an electrical case to be mounted in the exterior case without using a member that is fixed to the exterior case by welding or screws.

  The electrical case mounting structure for a hot water apparatus according to claim 1 is located on the front side of a predetermined device fixed in the outer case in the mounting structure for mounting an electrical case for housing a control board in the outer case of the hot water apparatus. A mounting bracket having a main body, a contact portion that contacts the front surface of the device, a locking portion that is locked to the back surface of the device, and a fixing portion that fixes the electrical case is provided. Yes.

  According to a second aspect of the present invention, there is provided the electrical case mounting structure of the hot water device according to the first aspect of the invention, wherein the mounting bracket has a support portion formed in a portion separated from the contact portion, and the support portion is disposed in the exterior case. An auxiliary metal fitting connected to an accessory member of the specific device is provided.

  According to a third aspect of the present invention, there is provided the electrical equipment case mounting structure of the hot water device according to the first or second aspect, wherein the device is a neutralizer having a predetermined front-rear width, and the locking portion is located near the upper surface of the neutralizer. It is characterized by extending rearward along.

  The electrical case mounting structure for a hot water device according to claim 4 is the invention according to claim 3, wherein the neutralizer has a neutralizer body and a cap attachment portion connected to an upper end of the neutralizer body, The locking part is locked to the cap mounting part.

  According to the first aspect of the present invention, the mounting bracket is located on the front side of the predetermined device, the contact portion that contacts the front surface of the device, and the locking portion that is locked to the back surface of the device. The mounting bracket is fixed to the equipment by fixing the electrical equipment case to the equipment, by bringing the abutting part into contact with the front surface of the equipment and engaging the locking part with the rear surface of the equipment. The electrical case can be fixed to the part. In this way, the electrical case can be fixed in the exterior case using a mounting bracket having a simple structure without using a member that is directly fixed to the exterior case.

  According to the invention of claim 2, the mounting bracket has a support portion spaced from the contact portion, and the auxiliary bracket is provided to connect the support portion to an accessory member of a specific device in the exterior case. The supporting part can be supported by the attachment member by a metal fitting.

  According to the invention of claim 3, since the device is a neutralizer having a predetermined front-rear width, and the locking portion extends rearward along the vicinity of the upper surface of the neutralizer, it has a front-rear width. The mounting bracket can be supported by a rigid neutralizer.

  According to invention of Claim 4, the said neutralizer has a neutralizer main body and the cap attachment part connected with the upper end of this neutralizer main body, and the said latching | locking part latches to the said cap attachment part. Therefore, the mounting bracket can be easily mounted by locking the locking portion to the cap mounting portion.

It is a front view of the water heater (front cover removal state) which concerns on the Example of this invention. It is a perspective view of a water heater. It is a perspective view of a water heater. It is a perspective view of a water heater. It is a perspective view of a mounting bracket. It is a perspective view of a mounting bracket. It is a perspective view of an auxiliary metal fitting. It is a perspective view of an auxiliary metal fitting. It is a disassembled perspective view of an electrical equipment case.

  Next, the form for implementing this invention is demonstrated based on an Example.

  As shown in FIGS. 1 to 4, a water heater 1 is a gas combustion type hot water device, and a blower fan 3, a gas combustion burner 4, and a primary heat exchanger are provided in a box-shaped outer case 2 made of a color steel plate. 5 (sensible heat recovery heat exchanger), secondary heat exchanger 6 (latent heat recovery heat exchanger), neutralizer 7 for neutralizing drain generated from the secondary heat exchanger 6, heating heating medium ( Equipment such as an expansion tank 8 for storing water), an electrical case 9 for storing a control board, an alarm terminal box 10, and the like, a part of an exhaust cylinder 11 for releasing combustion exhaust gas, and piping are housed. Hereinafter, as shown in FIG. 2, the front and rear, left and right, and up and down directions will be defined and described.

  The exterior case 2 is configured in a box shape with a top plate 20, a left plate 21, a right plate 22, a bottom plate 23, a back plate (not shown), and a front cover (not shown). A flange 2 a is formed at the front end of the right side plate 22. A hot water device mounting plate 24 protruding upward and downward is fixed to the upper end portion and the lower end portion of the back plate, and the water heater 1 is attached to the wall surface by fixing the hot water device mounting plate 24 to the wall surface with a plurality of screws. It is done.

The electrical case mounting structure of the water heater 1 is a mounting structure in which the electrical case 9 for housing the control board is mounted in the exterior case 2 of the water heater 1.
As shown in FIGS. 2 to 6, the mounting bracket 30 of the electrical case mounting structure includes a main body portion 31 positioned on the front side of the neutralizer 7 (predetermined device) fixed in the exterior case 2, and neutralization. A contact portion 32 that contacts the front surface of the vessel 7, a locking portion 33 that is locked to the back surface of the neutralizer 7, and a support portion 34 that is formed at the left end portion that is spaced leftward from the contact portion 32. And a fixing portion 35 for fixing the electrical case 9. As shown in FIGS. 3 to 7, in the electrical case mounting structure, in addition to the mounting bracket 30, the support portion 34 is connected to the burner accessory mounting plate 25 (an accessory member of a specific device) in the exterior case 2. A metal fitting 40 is provided.

  As shown in FIG. 1 and FIG. 2, the neutralizer 7 has a predetermined front-rear width. The neutralizer 7 includes a neutralizer body 7a and a cap attachment portion connected to the upper end of the neutralizer body 7a. 7b, drain pipe connecting portion 7c, two caps 7d covering the two neutralizing agent inlets formed in the cap mounting portion 7b, and a vertical trapezoidal plate integrally formed on the left side of the neutralizer 7 -Like support bracket 7e.

  As shown in FIGS. 5 and 6, the main body 31 of the mounting bracket 30 is formed in an inverted T shape and is formed with a locking portion 33 extending rearward from the upper end thereof, and from the right end of the main body 31 to the rear. A contact portion 32 is formed so as to extend to the rear, a support portion 34 is formed so as to extend rearward from the left end portion, and two fixing portions 35 for fixing the electrical case 9 to the left end portion and the right end portion of the lower end side portion are provided. Is formed. The main body 31 is arranged in a spaced manner from the front surface of the neutralizer 7 forward by a small distance.

  As shown in FIGS. 2 to 6, the locking portion 33 of the mounting bracket 30 includes an arm portion 33 a that horizontally extends rearward from the upper end of the main body portion 31 along the vicinity of the upper surface of the cap mounting portion 7 b of the neutralizer 7. The locking claw portion 33b is bent downward from the rear end of the arm portion 33a, and the locking claw portion 33b is locked to the rear surface of the cap mounting portion 7b.

  The contact portion 32 of the mounting bracket 30 has an arm portion 32a extending a predetermined length rearward from the right end portion of the main body portion 31, and a contact piece 32b bent leftward from the rear end of the arm portion 32a. Then, the contact piece 32b is brought into contact with the front surface of the neutralizer body 7a of the neutralizer 7.

  The support part 34 of the mounting bracket 30 has an arm part 34a extending a predetermined length rearward from the left end of the main body part 31, and a support piece 34b bent at a right angle from the arm part 34a to the left. One screw hole 34c is formed in the piece 34b.

  As shown in FIGS. 2, 5, 6, and 9, the electrical case 9 has a case main body 36 and a lid member 37, and the connecting portion at the lower end of the lid member 37 is connected to the connecting portion 36 a of the case main body 36. By connecting and engaging the three engaging claws 37a of the lid member 37 with the engaging portions 36a of the case main body 36, the electrical case 9 has a box shape.

Screw holes are respectively formed in the two fixing portions 35 of the mounting bracket 30, and the two mounting portions 36 b at the upper end of the electrical case 9 are fastened to the two fixing portions 35 by screws 38, respectively.
A rod portion 36 c that protrudes downward is formed at the left end side portion of the lower end portion of the electrical case 9, and the rod portion 36 c is fitted into a rod support hole (not shown) formed at the left end portion of the bottom plate 23. Thus, the lower end portion of the electrical case 9 is supported.

  As shown in FIGS. 4, 7, and 8, the auxiliary metal fitting 40 includes a front end member 41 and an arm member 42 that extends horizontally from the left end side portion of the front end member 41 to the rear side. The front end member 41 is formed at a crank-like main body portion 41a, a left end connecting portion 41b integrally formed in a bent shape that rises one step forward at the left end portion of the main body portion 41a, and a right end of the main body portion 41a. A right end connecting portion 41c and a flange portion 41d bent rearward from the upper end of the main body portion 41a.

  The left end connecting portion 41b is formed with two screw holes 43a and 43b, and the right end connecting portion 41c is formed with two screw holes 44 and a bent piece 45 bent forward from its lower end. ing. A locking claw 42 a bent downward is formed at the rear end of the arm portion 42.

  As shown in FIGS. 3 and 4, a burner accessory mounting plate 25 in a vertical posture is disposed in parallel with the neutralizer 7 in the vicinity of the back side of the neutralizer 7. The auxiliary metal fitting 40 is disposed so as to protrude downward and leftward from the lower end portion on the left end side of the mounting plate 25, and the right end connecting portion 41 c is fastened by a screw 46 screwed into the two screw holes 44. This is fixed to the mounting plate 25.

  With the support bracket 7e of the neutralizer 7 sandwiched between the support piece 34b of the support portion 34 of the mounting bracket 30 and the left end connection portion 41b, the support piece 34b, the support bracket 7e, and the left end connection portion 41b are connected with screws 48. By fastening together, the support portion 34 and the left end connecting portion 41 b are connected to the neutralizer 7. The left end connecting portion 41b is fastened and fixed to the expansion tank 8 with a screw 47 screwed into the screw hole 43a. The locking claw 42 a of the arm portion 42 is locked to the rear surface of the burner case support plate 49.

Next, the operation and effect of the electrical equipment case mounting structure of the water heater described above will be described.
The mounting bracket 30 includes a main body portion 31 positioned on the front side of the neutralizer 7, a contact portion 32 that contacts the front surface of the neutralizer 7, and a locking portion 33 that is locked to the back surface of the neutralizer 7. And the fixing portion 35 for fixing the electrical case 9, the abutting portion 32 is brought into contact with the front surface of the neutralizer 7, and the locking portion 33 is locked to the back surface of the neutralizer 7. Thus, the mounting bracket 30 is supported by the neutralizer 7, and the electrical case 9 can be fixed to the fixing portion 35.

In this way, the electrical case 9 can be fixed in the exterior case 2 using the mounting bracket 30 having a simple structure without using a member that is directly fixed to the exterior case 2.
The mounting bracket 30 has a support portion 34 separated from the contact portion 32, and the auxiliary bracket 40 is provided by the auxiliary bracket 40 to provide the auxiliary bracket 40 that connects the support portion 34 to the burner accessory mounting plate 25 in the exterior case 2. Can be supported by the mounting plate 25.

  Further, the support bracket 7e of the neutralizer 7 is fastened together by fastening between the support portion 34 and the left end connection portion 41b of the auxiliary metal fitting 40, and the left end connection portion 41b is fixed to the expansion tank 8 with screws 47. Therefore, the auxiliary metal fitting 40, the neutralizer 7 and the attachment metal fitting 30 can be supported by the expansion tank 8.

  Since the locking claw 42a of the arm portion 42 of the auxiliary metal fitting 40 is locked to the rear surface of the burner case supporting plate 49, the mounting plate 25 and the mounting metal 30 are regulated so as not to move forward, The position can be held at the desired position.

  The neutralizer 7 has a predetermined front-rear width, and the locking portion 33 extends rearward along the vicinity of the upper surface of the neutralizer 7, so that the neutralizer 7 has a front-rear width and is rigid. The mounting bracket 30 can be supported.

  Since the neutralizer 7 has a neutralizer body 7a and a cap mounting portion 7b connected to the upper end of the neutralizer body 7a, and the locking portion 33 is locked to the cap mounting portion 7b. Since the stop portion 33 is locked to the cap attachment portion 7b, the attachment fitting 30 can be easily attached.

  The above-described embodiment is merely an example, and those skilled in the art can implement the present invention by adding various modifications to the above-described embodiment, and the present invention includes such modifications. .

1 Water heater (hot water device)
2 Exterior case 7 Neutralizer (predetermined equipment)
7a Neutralizer body 7b Cap mounting part 9 Electrical case 25 Burner accessory mounting plate (particular accessory member)
30 Mounting bracket 31 Main body 32 Abutting portion 33 Locking portion 34 Supporting portion 35 Fixing portion 40 Auxiliary bracket

Claims (4)

  In a mounting structure for mounting an electrical case for housing a control board in an exterior case of a hot water device, a main body located on the front side of a predetermined device fixed in the exterior case, and a contact that contacts the front surface of the device An electrical equipment case mounting structure for a hot water apparatus, comprising: a mounting bracket having a portion, a locking portion that is locked to a back surface of the device, and a fixing portion that fixes the electrical equipment case. The mounting bracket has a support portion formed at a site separated from the contact portion,
2. The electrical case mounting structure for a hot water apparatus according to claim 1, further comprising an auxiliary metal fitting for connecting the support portion to an accessory member of a specific device in the exterior case. The device is a neutralizer having a predetermined longitudinal width;
3. The electrical case mounting structure for a hot water apparatus according to claim 1, wherein the locking portion extends rearward along the vicinity of the upper surface of the neutralizer.   The neutralizer has a neutralizer main body and a cap mounting portion connected to an upper end of the neutralizer main body, and the locking portion is locked to the cap mounting portion. 3. An electrical case mounting structure for a hot water apparatus according to 3.