JP3364391B2 - Mounting structure of heat exchanger unit of water heater - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger unit mounting structure for a water heater having a built-in heat exchanger unit heated by a burner.

[0002]

2. Description of the Related Art Conventionally, in this type, a bottom surface of a partition plate attached to a heat exchanger and an upper surface of a burner unit are attached to the entire circumference of a flange on an upper surface of the burner unit via a heat insulating packing, The burner unit is tightened and fixed from below the flange of the burner unit with a number of screws, and the burner unit is integrated as a unit of the heat exchanger. It was fixed to.

[0003]

By the way, in this conventional heat exchanger unit mounting structure, since the upper and lower sides of the heat exchanger unit integrated with the burner unit by screws are fixed to the main body case by screws, When installing or removing the heat exchanger unit for assembly, inspection or repair, especially after the completion of construction, the water heater main body is installed upright, so remove the upper and lower screws when removing. As the number of screws in the screwed state decreases, the weight of the heat exchanger unit is applied to the screws in the screwed state, and the screws and screw holes are deformed. The heat exchanger unit may fall down due to the weight of the unit, and when installing it, you have to hold the heat exchanger unit with someone with the screw holes aligned and screw it in. Maintenance work has been extremely difficult.

[0004]

Means for solving the problem] This invention for solving the above drawbacks by focusing on this point, in particular its configuration, according to claim 1
In, at a heat exchanger unit located above the burner unit to the built-in water heater in the water heater main body, the hot water supply
Providing a heat exchange part with an open top inside the back of the machine
At the same time, insert it into the heat exchanger on the back of the heat exchanger unit.
A heat exchange engaging portion that is inserted and engages with the heat exchange receiving portion is provided . Also, in claim 2, in claim 1, the heat exchange
The hook part forms a receiving surface with the opening part facing up, and
The heat exchange engaging portion receives heat exchange when engaged with the heat exchange receiving portion.
Contact the inner surface of the heat exchange receiving part with the engaging surface that abuts the receiving surface of the part.
Fold the contact part and the inside of the back side of the water heater body.
And a bent portion. Further, in claim 3, the burner
Install the heat exchanger unit located above the unit as a water heater
In the water heater built in the body, the back of the water heater body
Cut and raise the mounting surface of the mounting plate to be fixed inside
And a pocket with a receiving surface with its opening facing up
-Like heat exchange part is provided, and on the back of the heat exchanger unit
The heat exchange engaging portion that engages with the heat exchange receiving portion is provided upright,
The joint part is formed by bending both ends and the tip
Engaging surface formed by bending the central part downward at a right angle
And fold both ends of the engaging surface downward at an angle smaller than a right angle.
And the insertion part formed by bending
When the hook portion and the heat exchange engaging portion are engaged, the engaging surface is the receiving surface.
And the insertion part is on the pocket side of the opening part of the heat exchange part.
Abutting the inside of the, the bent part abuts the mounting surface of the opening
To do. Further, in claim 4, in claim 3,
The mounting surface of the mounting plate is provided with a heat exchange thread cutting hole and one of the mounting surfaces.
Provided with a fixed plate guide piece that is erected by bending the part at a right angle,
Heat exchange by making the top surface closely contact with the bottom of the heat exchanger unit.
Fixing plate is integrated on the back side of the partition plate that is integrated with the unit
Part of the abutment part provided on the bottom of the fixing plate.
Bend it to the corner and stand up the guide part with the screw hole for the fixing plate.
When the heat exchanger receiving portion and the heat exchanger engaging portion are engaged,
The guide part is attached to the fixed plate guide piece, and the heat exchange screw
The hole position of the cut hole and the screw hole for the fixing plate match, and the hole position
Screw holes for heat exchange and screw holes for fixing plate
It is screwed together.

[0005]

In the mounting structure for the heat exchanger unit of the water heater according to claim 1 of the present invention , the upper side is opened inside the rear surface of the water heater body 1.
The heat exchanger unit 9 is provided and the heat exchanger unit is
The heat exchange part 9 is inserted on the back surface of the
By providing the heat exchange engagement portion 36 to be engaged, the heat exchanger
The weight of the unit 30 is always applied to the heat exchanger engaging portion 36 to keep it.
I have it. Further, the heat exchange of the water heater according to claim 2 of the present invention.
In the mounting structure of the heat exchanger unit, the heat exchanger unit 30
The insertion portion 39 of the heat exchange engagement portion 36 provided on the back is the water heater main body.
1 Inserted into the heat exchange receiving portion 9 on the inner side of the back surface to form a heat exchange engaging portion
The engaging surface 38 of 36 comes into contact with the receiving surface 8 of the heat exchange receiving portion 9.
When the heat exchanger unit 30 is locked, heat exchange
The weight of the container unit 30 is always applied to the heat exchange receiving section 9, and
The insertion portion 39 of the heat exchange engagement portion 36 of the heat exchanger unit 30
By contacting the inside of the heat exchange unit 9, the heat exchanger unit
The top of the toe 30 is positioned without rattling back and forth,
In addition, the bent portion 37 of the heat exchange engaging portion 36 is located inside the heat exchange receiving portion 9.
The upper side of the heat exchanger unit 30 by abutting on the side
Is positioned without rattling to the left and right, so heat exchange
The upper part of the container unit 30 is securely fixed.
Further, the heat exchanger unit of the water heater according to claim 3 of the present invention is mounted.
In the structure, the heat provided on the upper rear surface of the heat exchanger unit 30
The insertion portions 39 on the left and right of the cross engagement portion 36 are inside the rear surface of the water heater main body 1.
The heat exchanger 9 of the mounting plate 6 attached to the side
Then, the engaging surface 38 of the heat exchange engaging portion 36 receives the heat exchange receiving portion 9.
The heat exchanger unit 30 is locked by contacting the contact surface 8, and
As a result, the weight of the heat exchanger unit 30 is always
The heat exchanger unit 9 holds the heat exchanger so that the heat exchanger unit
When installing the hood 30, somebody can
Without working while supporting the
The screws that secure the heat exchanger unit 30 to the front
Since the heat exchanger unit 30 does not drop even if it is removed,
Only one worker can attach and remove the heat exchanger unit 30.
It can be easily removed and the heat exchanger unit 3
The insertion portion 39 of the heat exchange engaging portion 36 of No. 0 is a pocket of the heat exchange receiving portion 9.
The heat exchanger engaging portion 36 while contacting the inside of the cup-shaped portion
The tip portion of the bent portion 37 of the
More in contact, the upper portion of the heat exchanger unit 30 before and after
Positioned without rattling to the left and right, and heat exchange engaging part
The outer side surfaces of the left and right bent portions 37 of 36 are heat exchange portions.
Abut on the inner side surface of the pocket-shaped portion of 9
Causes the upper portion of the heat exchanger unit 30 to rattle to the left and right.
The heat exchanger unit 30 can be positioned without
The top is firmly fixed so no one can align the holes.
There is no need to install it separately, and one worker can work alone in high places.
Even if there is, it is safe and easy to remove the heat exchanger unit 30.
It is attached.

The heat exchanger unit of the water heater according to claim 4
In the mounting structure of the heat exchanger unit 30,
The left and right insertion portions 39 of the provided heat exchange engagement portion 36 are the water heater main body.
1 In the heat exchange part 9 of the mounting plate 6 mounted on the inside of the back surface
When inserted, the engagement surface 38 of the heat exchange engagement portion 36 receives the heat exchange.
The heat exchanger unit 30 is locked by coming into contact with the receiving surface 8 of the portion 9.
As a result, the weight of the heat exchanger unit 30 is always
Since it is applied to the heat exchange part 9 of the mounting plate 6, the fixing plate 21 is fixed.
Most of the screws 25 screwed in the screw holes 26 for the fixed plate
The weight of the heat exchanger unit 35 is not heavy, and the screws for the fixing plate
Deformation of the hole 26 or the screw 25 screwed in the hole
There is no screw 25 that is screwed into the fixing plate screw hole 26.
Even if the heat exchanger unit 30 is removed, the heat exchanger unit 30 comes off or falls.
There is nothing to do. Further, the insertion portion 39 of the heat exchange engaging portion 36 of the heat exchanger unit 30 abuts on the inside of the pocket-shaped portion of the heat exchange receiving portion 9, and the tip portion of the bent portion 37 of the heat exchange engaging portion 36 is By contacting the mounting surface 7 of the mounting plate 6, the upper portion of the heat exchanger unit 30 is positioned without rattling forward and backward, and the outer side surfaces of the left and right bent portions 37 of the heat exchanger engaging portion 36 receive heat. By contacting the inner side surface portion of the pocket-shaped portion of the portion 9, the upper portion of the heat exchanger unit 30 is positioned without rattling to the left and right, so that the upper portion of the heat exchanger unit 30 is securely fixed and , The mounting position of the heat exchanger unit 30 with respect to the mounting plate 6 is determined, and the fixing plate screw holes 26 of the fixing plate 21 and the heat exchange screw cutting holes 11 of the mounting plate 6 are in alignment with each other. Unit When fixing the 0, the fixing plate 21 integrated with the heat exchanger unit 30 is screwed, so that the fixing plate screw hole 26 of the fixing plate 21 and the heat exchange screw cutting hole 11 of the mounting plate 6 are aligned. It is not necessary and can easily install the heat exchanger unit 30 by yourself.
It can be removed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a hot water supply apparatus according to the present invention will be described with reference to an embodiment shown in the drawings. Reference numeral 1 denotes a water heater main body, which includes a top plate 2, an intermediate plate 3 that also serves as a side plate and a back plate, a bottom plate 4, and a front panel 5.

Reference numeral 6 denotes a mounting plate, which is provided with a pocket-shaped heat exchange receiving portion 9 in which a receiving surface 8 is formed by cutting and raising to the left and right above a projecting mounting surface 7 and opening it upward. A heat exchange threading hole 11 is formed below the guide recess 10 formed in the center of the left and right sides of the guide recess 10 and formed in a tapered shape around the center of the guide recess 1.
At a position slightly lower than 0, a part of the mounting surface 7 is bent at 90 degrees to vertically install the fixing plate guide piece 12, and a part of the mounting surface 7 is bent at 90 degrees also at the lower center to engage the burner. The piece 13 is provided upright and the burner threaded holes 14 are formed on the left and right sides thereof. A screw (not shown) is attached to the threaded hole 16 for the mounting plate on the fixed surface 15 around the mounting surface 7 from the outside of the main body. 3 is screwed in from the screw hole of the back plate portion, and the heat insulating material 17
The mounting plate 6 is fixed to the inside of the main body with the intervening.

Reference numeral 18 denotes a partition plate, which is opened at a substantially central portion of a horizontal surface for passing combustion gas, a heat exchange stop hole 19 is formed around an end of the horizontal surface, and a temporary portion is provided at a substantially central portion on the front side. A stopper receiver 20 is provided.

A fixed plate 21 has a convex cross section, and burner receiving holes 22 are provided on the left and right sides of the convex surface.
In the lower contact portion 23 of 1, a part of the corresponding contact portion 23 is bent at 90 degrees and a guide portion 24 is provided upright in the substantially center thereof.
The heat exchange screw thread holes 11 of the mounting plate 6 are provided on the left and right sides of the guide portion 24.
A screw hole 26 for a fixing plate that is screwed with a screw 25 is formed, and is integrated with the inner side of the partition plate 18 by spot welding or the like.

Reference numeral 27 is a burner unit which is tightly screwed to the lower surface of the partition plate 18 with the lower surface of the partition plate 18 in close contact with a heat insulating packing (not shown) between the lower surface of the partition plate 18 and the upper surface of the unit. Accordingly, the water heater main body 1 is fixed in the water heater main body 1, and an insertion port 28 is provided on the left and right below the front surface thereof.

Reference numeral 29 denotes a temporary fixing portion, which is rotatably supported on the upper center of the front surface of the burner unit 27, and is rotated when the burner unit 27 is attached to engage with the temporary fixing receiving portion 20 of the partition plate 18. The burner unit 27 is temporarily fixed.

Reference numeral 30 denotes a heat exchanger unit, which is screwed with a screw so that an opening surface (not shown) at the bottom is inserted into a heat exchange stop hole 19 on the upper surface of the partition plate 18 with a packing. It is integrated, and it is fixed inside the water heater body 1,
The combustion gas burned in the burner unit 27 rises, and after heating the fin pipe in the drum 31 formed by bending the sheet metal material from the opening surface of the bottom into a rectangular tube shape, it further rises and passes through the silencer section 32. The sound is silenced and then discharged from the exhaust unit 33 to the outside of the machine, whereby the water flowing into the fin pipe from the water supply pipe 34 and flowing out from the hot water discharge pipe 35 is heat-exchanged and heated.

Reference numeral 36 denotes a heat exchange engaging portion, which is the heat exchanger unit 3
No. 0 is fixed to the upper part of the back surface by screws and is bent, and both ends are bent to form a bent portion 37, and the central portion of the tip is bent downward about 90 degrees to form an engaging surface 38. Inserted portions 39 bent downward at an angle smaller than 90 degrees are formed at both ends of 38, and beet-shaped protruding portions 40 are formed in the inserted portions 39.

Reference numeral 41 denotes a blower unit, which is for supplying air to the burner unit 27 by inflowing air from an intake port 42 by rotating a built-in fan with a motor.

Reference numeral 43 is a damper unit, which has a built-in damper (not shown) for adjusting the amount of combustion air and a nozzle (not shown) for ejecting fuel oil, and is in close contact with an ejection port 44 provided on the side surface of the burner unit 27. It is fixed so that the opening portion on the upper surface and the opening portion on the bottom surface of the blower unit 41 are in close contact with each other.

An oil leveler 45 stores a fixed amount of fuel oil pumped up by a pumping pump 46 and adjusts the oil amount by a flow rate pump 47 to adjust the amount of oil.
Is ejected from the nozzle to the vaporization chamber and is fixed to the side surface of the burner unit 27 so as to be positioned below the damper unit 43.

Reference numeral 48 denotes a board unit, on which a board for controlling the entire water heater is attached, and the burner unit 27 is provided at the upper part.
The screw holes (not shown) provided at the lower ends of both ends of the front surface of the base with screws 49, and the lower part with the screw 50 provided at the front side of the bottom plate 4 with screws 50. Is fixed in the water heater main body 1.

Next, the procedure for assembling the water heater according to this embodiment will be described. First, the top plate 2 and the bottom plate 3 are screwed to the middle plate 3 to assemble the water heater body 1. Next, the mounting plate 6 is fixed to the inside of the back surface portion of the middle plate 3 with screws. Here, since the heat insulating material 17 is inserted into the space between the mounting surface 7 of the mounting plate 6 and the middle plate 3 to fix the mounting plate 6, the burner unit 27,
The heat of combustion in the heat exchanger unit 30 and the heat of combustion gas are prevented from being transferred from the mounting plate 6 to the intermediate plate 3.

Then, the insertion portions 39 at the left and right ends of the heat exchange engagement portion 36 provided on the upper rear surface of the heat exchanger unit 30.
At a position above the heat exchange part 9 of the mounting plate 6
When the heat exchanger unit 30 is gradually moved downward from there, the insertion portion 39 of the heat exchange engaging portion 36 enters the heat exchange receiving portion 9 to engage the heat exchange engaging portion 36. The mating surface 38 and the receiving surface 8 of the heat exchange receiving portion 9 come into contact with each other, and the guide portion 24 of the fixed plate 21 of the heat exchanger unit 30 comes into contact with the fixed plate guide piece 12 of the mounting plate 6 so that the heat exchanger. Unit 3
The weight of 0 is applied to the mounting plate 6 and held.

The inside of the insertion portion 39 of the heat exchange engaging portion 36 abuts on the inside of the heat exchange receiving portion 9, and the heat exchange engaging portion 3
The bent portion 37 of 6 contacts the mounting surface 7 of the mounting plate 6, so that the upper portion of the heat exchanger unit 30 is positioned without rattling back and forth. In addition, the side surfaces of the bent portions 37 of the left and right insertion portions 39 are the heat exchange portions 9
By contacting the inner side surface portion, the upper portion of the heat exchanger unit 30 is positioned without rattling left and right.

As a result, the weight of the heat exchanger unit 30 is hung on the mounting plate 6 and held and temporarily fixed. At that time, the fixing plate screw hole 26 of the abutting portion 23 of the fixing plate 21 and the mounting plate 6 are fixed. Since the hole positions of the heat exchange thread cutting holes 11 provided on the mounting surface 7 are aligned, the contact portion 23 of the fixing plate 21 is formed.
The fixing plate screw hole 26 and the heat exchange screw cutting hole 11 provided on the mounting surface 7 of the mounting plate 6 can be screwed together by the screw 25, whereby the heat exchanger unit 30 is completely attached to the mounting plate 6.
Since it is fixed to the heat exchanger unit 30, the heat exchanger unit 30 can be safely attached even if there is only one worker working at a high place.

Next, the damper unit 43 and the oil leveler 45 are previously attached to the burner unit 27 by screws to be integrated, and the upper opening of the burner unit 27 and the bottom opening of the heat exchanger unit 30 are opened. It is attached to the inside of the water heater main body 1 in close contact with the portion.

Next, the blower unit 41 is fixed by connecting the upper portion of the blower unit 41 and the intake port 42 and screwing the lower portion of the blower unit 41 to the damper unit 43.

Then, with the board unit 48 tilted by 90 degrees with respect to the front surface of the burner unit 27, an insert piece (not shown) on the top of the board unit 48 is inserted into the burner unit 27.
Of the board unit 48 is rotated 90 degrees, the upper part of the board unit 48 is screwed to the front surface of the burner unit 27 with a screw 49, and the lower part of the board unit 48 is screwed with a bottom plate. 4, the board unit 48 is fixed by being screwed into a threaded hole (not shown) provided on the front side of 4. After that, after connecting the wirings, the front panel 5 is fitted and screwed to complete the assembly.

On the contrary, the heat exchanger unit 30 is connected to the water heater main body 1
To remove it further, reverse the assembly procedure
After disconnecting and disconnecting each wiring, blower unit 41
The blower unit 41 is removed from the water heater main body 1 by disconnecting the connection between the upper part of the fan and the intake port 42 and removing the screw screwing the lower part of the blower unit 41 to the damper unit 43.

Then, the temporary fixing portion 2 of the burner unit 27
9 and the temporary fixing receiving portion 20 of the partition plate 18 are disengaged, and the screw that is further fixed is removed to remove the burner unit 27.
Is removed from the water heater body 1.

Then, the screw 25 for screwing the fixing plate screw hole 26 of the abutting portion 23 of the fixing plate 21 and the heat exchange threading hole 11 provided on the mounting surface 7 of the mounting plate 6 is removed. Then, since the heat exchanger unit 30 is in a temporary stop state in which the heat exchange engaging portion 36 and the heat exchange receiving portion 9 are engaged, the heat exchanger unit 30 is gradually moved upward in this state. Then, the insertion portion 39 of the heat exchange engaging portion 36 comes out of the heat exchange receiving portion 9, and the engagement surface 38 of the heat exchange engaging portion 36 that was in contact with the receiving surface 8 of the heat exchange receiving portion 9 is removed. The guide portion 24 of the fixed plate 21 of the heat exchanger unit 30 that was separated from the receiving surface 8 of the heat exchange receiving portion 9 and was in contact with the fixed plate guide piece 12 of the mounting plate 6 is separated, and in that state, the heat exchanger. When the unit 30 is gradually moved to the front, the heat exchanger unit 30 can be removed.

As described above, in the present embodiment, the heat exchange engaging portion 36 provided on the upper rear surface of the heat exchanger unit 30 is inserted into the heat exchange receiving portion 9 of the mounting plate 6 to be engaged with the heat exchange receiving portion 9. The engaging surface 38 of the cross engagement portion 36 and the receiving surface 8 of the heat exchange receiving portion 9 contact each other, and the guide portion 24 of the fixed plate 21 of the heat exchanger unit 30 contacts the fixed plate guide piece 12 of the mounting plate 6. By contacting, the weight of the heat exchanger unit 30 is hung on the mounting plate 6 and held, so that at the time of mounting the heat exchanger unit 30, someone does not need to work while supporting the heat exchanger unit 30. Also, even when the heat exchanger unit 30 is removed, the heat exchanger unit 30 does not fall even if the screw fixing the heat exchanger unit 30 is removed from the front, so that the worker can attach and remove the heat exchanger unit 30 by himself. Is.

Further, the inside of the insertion portion 39 of the heat exchange engaging portion 36 abuts on the inside of the heat exchange receiving portion 9, and the bent portion 37 of the heat exchange engaging portion 36 contacts the mounting surface 7 of the mounting plate 6. By contacting, the upper part of the heat exchanger unit 30 does not rattle back and forth, and the side surfaces of the bent portions 37 of the left and right insertion portions 39 abut on the side surface portions in the heat exchange portion 9, thereby exchanging heat. The upper portion of the container unit 30 does not rattle to the left and right, and is positioned by engaging the heat exchange engaging portion 36 with the heat exchange receiving portion 9, and the fixing plate screw hole 26 of the abutting portion 23 of the fixing plate 21 is formed. Since the hole positions of the heat exchange thread cutting holes 11 provided on the mounting surface 7 of the mounting plate 6 are aligned with each other, the fixing plate screw holes 26 of the abutting portion 23 of the fixing plate 21 and the mounting surface 7 of the mounting plate 6 are aligned. The heat exchange threaded hole 11 provided can be screwed with a screw 25. , Whereby the heat exchanger unit 30
Since it is completely fixed to the mounting plate 6, it is not necessary for someone to mount it while aligning the hole positions, and it is safe and easy even if there is only one worker working at high places.
0 can be attached.

[0031]

In summary, the present invention resides in claim 1.
Te, when mounting the heat exchanger unit which is heated by the burner unit to the water heater main body, the back surface of the heat exchanger unit
Heat交係engagement portion provided on the upper to the rear inside the water heater body
By inserting and engaging in the heat exchange unit provided as an opening, the weight of the heat exchanger unit is always hung on and held by the heat exchange unit , whereby when mounting the heat exchanger unit, without someone work while supporting the heat exchanger unit, also, since the heat exchanger unit it will not fall even be removed all parts of the screws that secure the heat exchanger unit when removing the worker alone The heat exchanger unit can be easily attached and removed. Also, the contract
In Requirement 2, the heat exchanger provided on the back surface of the heat exchanger unit.
The insertion part of the engaging part is not connected to the heat exchange part inside the back of the water heater body.
After being inserted, the engaging surface of the heat exchanger engaging portion is the receiving surface of the heat exchanger receiving portion.
By contacting with the heat exchanger unit is locked,
The weight of the heat exchanger unit always rests on the heat exchanger
Since it is held, the work of mounting the heat exchanger unit
When someone is supporting the heat exchanger unit,
Without removing the heat exchanger unit
Heat exchanger unit even if all fixing screws are removed
Does not fall, so only one worker can operate the heat exchanger unit.
Easy to install and remove, and heat exchanger unit
The insertion part of the heat exchange engaging part of the above abuts on the inside of the heat exchange receiving part.
Causes the upper part of the heat exchanger unit to rattle back and forth.
Position, and the bent part of the heat exchange engaging part receives heat.
By contacting the inside of the shank,
Since the upper part is positioned without rattling left and right,
There is no need to attach the card while aligning the hole positions,
Safe and easy heat exchange even if there is only one worker
A converter unit can be attached. Also bill
In item 3, heat provided on the upper rear surface of the heat exchanger unit
The left and right insertion parts of the cross engagement part are mounted inside the back of the water heater
Inserted into the heat exchange receiving part of the mounted mounting plate, heat exchange engagement
The engaging surface of the heat exchanger unit contacts the receiving surface of the heat exchanger unit,
The knit is locked and therefore the weight of the heat exchanger unit
Is always supported by the heat exchange part of the mounting plate ,
When installing the heat exchanger unit, somebody
Without working while supporting the
The screws that secure the heat exchanger unit to the front
The heat exchanger unit does not drop even if it is removed, so work
One person can easily install and remove the heat exchanger unit.
It can be easily done, and heat exchange engagement of the heat exchanger unit
The insertion part of the part is inside the pocket-shaped part of the heat exchange part.
Contact with each other and remove the tip of the bent part of the heat exchanger engaging part.
By contacting the mounting surface of the attached plate, the heat exchanger unit
The upper part of the
The outer side surfaces of the left and right bent parts of the heat exchange engaging part
Do not touch the inner side surface of the pocket
The upper and lower parts of the heat exchanger unit rattle
The upper part of the heat exchanger unit is
It will be fixed securely so that someone can adjust the hole
There is no need to attach it,
Safe and easy to install the heat exchanger unit
Is something

Further , in claim 4, the burner unit
Install the heat exchanger unit heated by
When attaching, the heat exchanger provided on the upper back of the heat exchanger unit
Attach the joint to the mounting plate that is attached to the inside of the back of the water heater.
Heat exchange by inserting and engaging in the heat exchange part
Since the weight of the unit is hung on the mounting plate and held,
When installing the heat exchanger unit, somebody
Without working while supporting the
All the screws holding the heat exchanger unit
The heat exchanger unit does not drop even if it is removed, so work
One person can easily install and remove the heat exchanger unit.
Are those that can be easily, further, by heat交係engaging portion and the heat exchange receiving portion are engaged not jounce upper left and right front and rear heat exchanger unit, heat交係engaging portion heat交受The screw holes for the fixing plate at the abutting portion of the fixing plate and the hole positions of the screw holes for heat exchange provided on the mounting surface of the mounting plate are aligned so that they are positioned by engaging with the fixing plate. Since the screw hole for the fixing plate at the contact portion and the screw hole for heat exchange provided on the mounting surface of the mounting plate can be screwed together, the heat exchanger unit is completely fixed to the mounting plate. It is not necessary for somebody to install the heat exchanger unit while aligning the hole positions, and the heat exchanger unit can be installed safely and easily even when there is only one worker working at a high place.

[Brief description of drawings]

FIG. 1 is a front view showing the inside of a water heater with an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a front view of the mounting plate.

FIG. 4 is a side view of the same.

FIG. 5 is a front view showing a state in which a heat exchanger unit is assembled to the mounting plate.

FIG. 6 is a side view of the same.

FIG. 7 is a rear view of the main part of the heat exchanger unit.

FIG. 8 is a rear view of the essential parts showing the engaged state of the heat exchange portion and the heat exchanger engagement portion.

FIG. 9 is a cross-sectional view of essential parts showing an engaged state of the receiving surface of the heat exchange receiving portion and the engaging surface of the heat exchanger engaging portion.

FIG. 10 is a cross-sectional view of essential parts showing an engaged state of the heat exchange receiving portion and the heat exchanger engaging portion.

[Explanation of symbols]

1 water heater body 6 Mounting plate 7 Mounting surface 8 Receiving surface 9 heat exchange part 27 burner unit 30 heat exchanger unit 36 Heat Exchange Engagement Part 37 Folded part 38 Engaging surface 39 Insert

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-5-106815 (JP, A) JP-A-6-117702 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24H 9/00 F24H 9/06 F23D 14/02

Claims (4)

(57) [Claims] 1. A water heater in which a heat exchanger unit located above a burner unit is built in a water heater main body,
A heat exchange part having an upper opening inside the back surface of the water heater body
And heat exchange on the back of the heat exchanger unit.
Providing a heat exchange engaging part that is inserted into the heat sink part and engages with the heat exchange receiving part
Mounting structure of the heat exchanger unit of the water heater, characterized in that the. 2. The heat exchange part has an opening part upward.
The heat exchange engaging portion forms a heat receiving surface and
Engagement surface that abuts the receiving surface of the heat exchange receiving portion when engaged with the
And the insertion part that abuts the inside of the heat exchange part, and the water heater body
It has a bent part that comes into contact with the inside of the back of the
The mounting structure of the heat exchanger unit of the water heater according to claim 1 . 3. A water heater in which a heat exchanger unit located above a burner unit is built in a water heater main body,
Attach the mounting surface of the mounting plate to the inside of the back of the water heater body.
Cut and raise to make the opening face up and the receiving surface
A pocket-shaped heat exchange part with a
Heat exchange engaging portion engaging with the heat exchange receiving portion on the back surface of the heating unit
And the heat exchange engaging part is formed by bending both ends.
Bend the bent part and the center of the tip downward at a right angle.
And the engaging surface formed by
With an insertion part formed by bending at a smaller angle
At the same time, when the heat exchange receiving portion and the heat exchange engaging portion are engaged,
The engaging surface comes into contact with the receiving surface, and the insertion part opens at the heat exchange receiving part.
Abutting on the inside of the pocket side of the part, the bent part is an opening
The mounting structure of the heat exchanger unit of the water heater, which is in contact with the mounting surface of the heat exchanger. 4. A heat exchange screw-cutting hole on the mounting surface of the mounting plate.
And a fixed plate plan in which a part of the mounting surface is bent at a right angle to stand
The inner piece is provided and the upper surface is sealed on the bottom of the heat exchanger unit.
The inner side of the partition plate that is attached to and integrated with the heat exchanger unit
The fixing plate is integrally provided on the
Bend a part of the contact part at a right angle to form a screw hole for the fixing plate
The guide part is installed upright, and the heat exchange receiving part and the heat exchange engaging part are connected to each other.
When engaged, the guide part will not contact with the fixed plate guide piece.
In addition, the hole positions of the heat exchange screw cutting hole and the fixing plate screw hole are
The heat exchange screw cutting hole and the fixing plate with the same hole position
The screw hole for use is screwed together with a screw.
The mounting structure of the heat exchanger unit of the water heater according to 3 .