JP3364387B2 - Mounting structure of burner 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 and a burner unit mounting structure for a water heater having a burner for heating the heat exchanger.

[0002]

2. Description of the Related Art Conventionally, in this type, a partition plate attached to a heat exchanger is provided on a lower side of a burner unit flange through a heat insulating packing over the entire circumference of the burner unit flange. More, it is tightened and fixed with many screws, and the burner unit is used as a heat exchanger unit.
It was built in the body case and configured as a water heater.

However, in this conventional burner unit mounting structure, since the burner unit and the heat exchanger are integrally fixed by screws, when the burner unit is removed for inspection or repair, the burner unit alone is removed. It was not possible to do this, and especially after the completion of construction, the piping for water supply and hot water supply with the heat exchanger had already been done, so maintenance work was extremely difficult.

Therefore, as disclosed in, for example, Japanese Unexamined Patent Publication No. 5-296574, as shown in FIG. 13, a partition plate 103 having guide plates 101 on both side surfaces and a U-shaped holding metal fitting 102 on the back side is provided. It is provided in the lower part of the heat exchanger, and is sandwiched by the holding metal fitting 102 and guided by the guide plate 101 via a flange 105 of the burner unit 104, which is interposed between the flange plate 105 and the partition plate 103. The front side of the flange 105 is the partition plate 10
It was fixed at 3.

[0005]

By the way, in this conventional one, when the burner unit is assembled to the water heater main body,
Since both ends of the burner unit flange must be inserted into the U-shaped guide plates attached to both sides of the partition plate that is integrated with the heat exchanger, visually check until the insertion is completed. I had to insert a burner unit. Therefore, when the insertion position of the burner unit is lower than the eye level, it is necessary to take a middle waist or a crooked and unreasonable posture. I had to prepare. Also, the burner unit must be held by hand until both ends of the burner unit flange are inserted into the U-shaped guide plates attached to both sides of the partition plate, and it is necessary to take an unreasonable posture. When it didn't happen, there was a drawback that it was very difficult to do the work.

[0006]

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, on the back in the water heater main body, and a heat exchanger unit with a built-in heat exchanger, the burner unit to the lower surface is fixed a burner unit for heating the heat exchanger unit, the bottom of the heat exchanger unit to the upper surface A partition plate that is in close contact with the top surface
In the water heater to be attached , the burner unit has a temporary fixing portion rotatably provided on the front side, and the partition plate has a temporary fixing receiving portion engaging with the temporary fixing portion of the burner unit on the front side. is there. Further, in claim 2, the rear surface in the main body of the water heater
A heat exchanger unit with a built-in heat exchanger,
Heat exchange with the burner unit that heats the reactor unit
Fix the bottom of the burner unit and attach the burner unit to the bottom.
In a water heater that attaches a partition plate that adheres to the upper surface of the heater
The burner unit below the bottom side
Partial engagement part is provided and the temporary fixing part is rotatable on the front side
The partition plate is provided on the front side, and the temporary fixing part of the burner unit is provided.
Provided with a temporary fixing receiving part that engages with
A burner engaging piece that engages with the lower engaging portion of the burner unit
It is provided. Further, in claim 3, in the main body of the water heater,
A heat exchanger unit having a built-in heat exchanger, and the heat exchanger unit.
A burner unit for heating the knit and a heat exchanger unit on the top.
Fix the bottom of the knit and attach the burner unit
Installed inside the partition plate that is in close contact with the top surface and inside the back of the water heater body.
Install the heat exchanger unit, burner unit and partition plate.
In a water heater having a mounting plate to be mounted, the bar
The lower unit of the burner unit has a lower engaging unit on the bottom.
In addition, the temporary fixing part is rotatably provided on the front side,
The cutting plate is engaged with the temporary fixing part of the burner unit on the front side.
The stopper plate is provided, and the mounting plate is the bar of the burner unit.
A burner engaging piece that engages with the lower unit engaging portion is provided.
It is a thing. According to claim 4, in claim 3,
The temporary fixing receiving part is provided near the center on the front side of the partition plate and
Locking part with lower lifting height than other parts, and its engagement
A threaded hole is formed by standing upright at a position slightly behind the stop.
The temporary fixing portion has a substantially cross section.
It has an inverted L shape and is rotatably supported on the upper center of the front plate .
When it engages with the temporary fixing receiving part of the partition plate,
Insert the stopper piece and keep the bottom surface
The temporary fixing part is engaged by contacting the locking part of the stopper receiving part.
The locking piece of the bent portion to be stopped and the middle part of the locking piece
When the part is further bent back and is engaged with the temporary fixing receiving part
Abut the screw stopper and insert it into the threaded hole of the screw stopper.
It consists of a screw stop with a screw hole formed at the corresponding position.
It is a thing. According to claim 5, in claim 4,
On the back side of the burner unit, a back side engaging part with a substantially U-shaped cross section
Provided and the back side engagement inside the back side of the water heater body
Is provided with a rear engagement receiving portion for engaging with the rear engagement receiving portion.
The parts are provided on the left and right of the mounting plate, and the center is hollow
Guide with a tapered surface around which the circumference is tapered
Burner with a convex cross section provided integrally with the recess and the partition plate
Below the burner receiving holes provided on the left and right of the convex surface of the receiving plate
The contact surface is formed by bending a part.

[0007]

When the burner unit 28 is attached to the water heater main body 1, first, the burner engaging piece 12 provided on the mounting plate 6 in the water heater main body 1 is engaged with the lower portion of the burner unit provided at the inner side of the bottom of the burner unit 28. By engaging the portion 44, the weight of the burner unit 28 itself can be supported by the burner engaging piece 12 of the mounting plate 6, and the operator does not need to support the weight of the burner unit 28 by hand. Further, the burner unit lower engaging portion 44 provided on the inner side of the bottom portion of the burner unit 28 is engaged with the burner engaging piece 12 provided on the mounting plate 6 in the water heater main body 1 to thereby burner unit 28.
The mounting position is determined, and the worker can set the burner unit 28 at a predetermined mounting position by rotating the burner unit 28 upward with the engaging portion as a fulcrum.

Further, in this state, the temporary fixing portion 35 provided on the front plate 33 of the burner unit 28 is rotated,
The bottom surface of the locking piece 36 of the temporary fixing portion 35 and the locking portion 17 of the temporary fixing receiving portion 20 provided in the front portion of the partition plate 15 are engaged with each other to lock the temporary fixing portion 35, whereby the burner unit 28. Is temporarily fixed, the operator can keep both hands away from the burner unit 28, and it is easy to completely fix the burner unit 28 with screws using both hands.

[0009]

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 designates a mounting plate, which is provided with heat exchange engaging portions 8 on the left and right above the projecting mounting surface 7, and a tapered surface 9 in which the center is hollowed in the left and right and the periphery thereof is tapered.
The guide plate 10 is formed with the guide recesses 10 and the guide recesses 10 on the left and right of the guide recesses 10 at a position slightly lower than the guide recesses 10, and a part of the mounting surface 7 is bent 90 degrees to set the receiving plate guide piece 11 upright. The burner engaging piece 12 is provided upright by bending a part of the mounting surface 7 at approximately the center, and a fixing surface 13 around the mounting surface 7 is provided.
The mounting plate 6 is fixed to the inside of the main body by screwing a screw (not shown) into the threaded hole 14 from the outside of the main body through the screw hole in the rear portion of the intermediate plate 3.

Reference numeral 15 denotes a partition plate, which is opened at a substantially central portion of a horizontal surface for the combustion gas to pass through, has a heat exchange stop hole 16 formed around the end of the horizontal surface, and stands at a substantially central portion on the front side. Locking part 17 with a raised height lower than other parts
Further, a temporary fixing receiving portion 20 is provided, which is erected at a position slightly deeper than the locking portion 17 and is provided with a screwing piece 19 having a threaded hole 18 formed therein.

Reference numeral 21 is a burner receiving plate having a convex cross section,
Burner receiving holes 22 are formed on the left and right sides of the convex surface, and a lower portion of the burner receiving hole 22 is bent to form an abutting surface 23. The abutting surface 23 of the burner receiving hole 22 and the mounting plate are formed. The back surface engagement receiving portion 24 is formed by the tapered surface 9 of the guide concave portion 10 of 10.

Further, a receiving plate guide portion 26 is provided upright at a portion of the lower screw fixing surface 25 by bending the screw fixing surface 25 by 90 degrees, and a receiving plate guide portion 26 is provided so as to stand on the rear side of the partition plate 15 and a spot. It is integrated by welding or the like, and is fixed together with the partition plate 15 to the substantially central portion of the mounting plate 6 with a screw 27.

Reference numeral 28 denotes a burner unit, which includes a combustion section 29 for vaporizing, premixing and burning kerosene as a fuel, a container 30 for accommodating the combustion section 29, and a tip thereof located near the burner head in the combustion section 29. And a front plate 33 to which a frame rod 32 for detecting the state of flame is attached, and a heat insulating packing 34 is interposed between the lower surface of the partition plate 15 and the upper surface of the unit. In this state, the upper surface of the unit is closely attached and fixed to the lower surface of the partition plate 15, so that the water heater main body 1 is fixed.

Reference numeral 35 denotes a temporary fixing portion, which has a substantially inverted L-shaped cross section, is rotatably supported by the center upper portion of the front plate 33, and temporarily engages with the temporary fixing receiving portion 20 of the partition plate 15. In addition to sandwiching the screw fastening piece 19 of the stopper receiving portion 20, the bottom surface is brought into contact with the engaging portion 17 of the temporary receiving portion 20 in the temporarily fixed state to engage the bent portion for engaging the temporary attaching portion 35. The piece 36 and a part of the middle portion of the locking piece 36 are further bent back to be formed. When the piece 36 is engaged with the temporary fixing receiving portion 20, the piece 36 is brought into contact with the screw fixing piece 19, and the threaded hole 18 of the screw fixing piece 19 is formed. And a screw stop portion 38 having a screw hole 37 formed at a position corresponding to.

Reference numeral 39 designates a burner unit upper fixing screw, which is a screw with a brim having a brim formed in the central portion thereof, and which has a front plate 3
The upper end of 3 is bent to locate the tsuba in the middle of the U-shape of the screw receiver 40 having a U-shaped cross section, and when not screwed, the tsuba engages with the screw receiver 40 and falls. After being temporarily fixed to the burner unit 28, the burner unit 28 is prevented from being lost by coming off or coming off. Combined, burner unit 28 and partition plate 1
The lower surface of 5 is closely attached and fixed.

Reference numeral 42 denotes a rear surface engaging portion, which has a substantially U-shaped cross section, is provided on the left and right sides of the rear surface of the storage body 30, passes through the burner receiving hole 22 of the burner receiving plate 21, and the tip thereof is further displaced to burner. When it passes through the receiving hole 22, it abuts on the tapered surface 9 of the guide recess 10 of the mounting plate 6 and guides it to a predetermined position, whereby the bottom surface 43 of the rear engagement portion 42 is made into contact with the burner receiving plate 20.
The burner receiving plate 21 bears the weight of the burner unit 28 in contact with the contact surface 23.

Reference numeral 44 denotes a lower burner unit engaging portion, which is provided at the center of the lower rear surface of the storage body 30 and has an engaging piece receiving portion 45 for engaging with the burner engaging piece 12 below the mounting plate 6 in the center. Then, a screw receiver 46 having a U-shaped cross section is formed at both ends, and a flange of a burner unit lower fixing screw 47 of a flanged screw having a flange formed at the center is located in the middle of the U-shape. After the burner unit 28 is temporarily fixed, it is screwed into the threaded holes 48 provided at the left and right positions of the burner engaging piece 12 below the mounting plate 6 to prevent the burner unit 28 from being removed. The lower part is fixed to the mounting plate 6.

Reference numeral 49 is an upper guide piece, which is a burner unit 28.
The burner unit 28 is provided at both ends of the upper part of the burner unit 28 and guides the burner unit 28 so that the burner unit 28 does not largely deviate from the partition plate 15 when the burner unit 28 is incorporated. 50 is an upper locking piece, which is a burner unit 2
When the burner unit 28 is installed in the front of the upper part of the partition plate 8, the partition plate 1 comes into contact with the front part of the partition plate 15.
The positional relationship between the front and rear of the burner unit 28 is prevented from shifting.

Reference numeral 51 is a heat exchanger unit, in which an engaging protrusion (not shown) provided on the upper rear surface is engaged with the heat exchange engaging portion 8 of the mounting plate 6, and an opening surface of the bottom portion is provided with a packing. In this state, it is fixed in the water heater main body 1 by closely fixing it to the upper surface of the partition plate 15 with a screw (not shown), and the combustion gas in the burner unit 28 is transferred from the bottom opening surface to the heat exchanger. It passes through the inside of the unit 51, heats the heat exchanger, and is exhausted from the exhaust port 52 in the upper part.

Reference numeral 53 is a blower unit, which rotates the built-in fan with a motor to supply air to the burner unit 28 through the intake port 54.

Reference numeral 55 is a damper unit which has a built-in damper for adjusting the amount of combustion air and a nozzle for ejecting fuel oil, and is fixed in close contact with an ejection port 56 provided on the side surface of the burner unit 28, and an opening portion on the upper surface. The opening portion of the bottom surface of the blower unit 53 is fixed so as to be in close contact.

Reference numeral 57 is an oil leveler, which stores a fixed amount of fuel oil pumped up by a pumping pump 58 and adjusts the amount of fuel oil by a flow rate pump 59 to adjust the damper unit 55.
It is ejected from the nozzle to the vaporization chamber, and is fixed to the side surface of the burner unit 28 so as to be located under the damper unit 55.

Reference numeral 60 denotes a board unit, on which a board for controlling the entire water heater is attached, and the burner unit 28 is provided at the upper part.
The front plate 33 is fixed in the water heater body 1 by being screwed into the screw holes 61 provided at the lower ends of both ends of the front plate 33, and the lower parts being screwed into the screw holes provided on the front side of the bottom plate 4.

Next, the procedure for assembling the water heater according to this embodiment will be described. First, the top plate 2 and the bottom plate 4 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 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, combustion heat or combustion gas in the burner unit 28 or the heat exchanger unit 51 is fixed. The heat of the mounting plate 6
Is not transmitted to the middle plate 3.

Then, a screw hole (not shown) in the screwing surface 25 of the burner receiving plate 21 integrated with the partition plate 15 is formed.
The partition plate 15 and the burner receiving plate 21 are fixed to the mounting plate 6 by inserting a screw 27 and screwing it into a threaded hole (not shown) provided in the mounting surface 7 of the mounting plate 6.

Next, the engaging projection provided on the upper rear surface of the heat exchanger unit 51 is engaged with the heat exchange engaging portion 8 of the mounting plate 6, and the partition plate with the opening surface of the bottom portion interposing packing. It is fixed in the water heater main body 1 by closely fixing it to the upper surface of 15 with a screw (not shown). The fixing of the burner receiving plate 21 integrated with the partition plate 15 and the fixing of the heat exchanger unit 51 were separately performed. However, before fixing to the mounting plate 6, the bottom portion of the heat exchanger unit 51 was fixed. The opening surface is fixed to the upper surface of the partition plate 15 with a screw in close contact with the packing, and the partition plate 15, the burner receiving plate 21, and the heat exchanger unit 51 are integrated, and then the mounting plate is attached. 6 may be installed, especially in the maintenance work after the completion of construction, the partition plate 15, the burner receiving plate 21, the heat exchanger unit 5
The unit 1 and the unit 1 are integrated and removed from the water heater main body 1.

Next, the burner unit 28 in which the damper unit 55 and the oil leveler 57 are previously attached by screws and integrated together is tilted toward the front with the upper portion of the burner unit 28 tilted toward the front, and first, the burner engaging piece below the mounting plate 6 is engaged. 12, burner unit 2
8, the engaging piece receiving portion 45 of the burner unit lower engaging portion 44
Engage. When the engagement piece receiving portion 45 engages with the burner engagement piece 12, the engagement piece receiving portion 45 is placed on the burner engagement piece 12, and the weight of the burner unit 28 is applied to the burner engagement piece 12. When the water heater main body 1 is in the upright state, it is sufficient for the operator to put his / her hand on the upper front surface of the burner unit 28 so that the inclination of the burner unit 28 does not increase.

When the upper portion of the front surface of the tilted burner unit 28 is pushed, the burner unit 28 rotates about the burner engaging piece 12 as a fulcrum. When the burner unit 28 is in a substantially straight position, the partition plate 15
Are guided so as to be located between upper guide pieces 49 provided at both ends of the upper portion of the burner unit 28, and the partition plate 15
The upper locking piece 50 formed on the front surface of the burner unit 28 and the front surface of the burner unit 28 contact each other to determine the positional relationship between the lower surface of the partition plate 15 and the upper surface of the burner unit 28.

Further, the back surface engaging portion 42 provided on the back surface of the burner unit 28 passes through the burner receiving hole 22 of the burner receiving plate 21 and its tip is guided to the guide recess 10 of the mounting plate 6, and the back surface engaging portion. The bottom surface 43 of 42 contacts the contact surface 23 of the burner receiving plate 21, and the weight of the burner unit 28 also applies to the burner receiving plate 21.

The guide recess 10 has a tapered surface 9 in which the recessed surface is inclined in a tapered shape. Even if the rear surface engaging portion 42 is slightly displaced and passes through the burner receiving hole 22, the rear surface engaging portion is engaged. The tip of the joint portion 42 hits the tapered surface 9 to guide the rear surface engaging portion 42 to a predetermined position, and the tapered surface 9 of the guide recess 10 and the contact surface 23 of the burner receiving hole 22 allow the rear surface engaging portion to be engaged. The rear engagement receiving portion 24 that engages with the joining portion 42 is configured.

When the temporary fixing portion 35 is rotated when the burner unit 28 is in a substantially straight position, the screw fixing piece 19 of the temporary fixing receiving portion 20 of the partition plate 15 is locked by the temporary fixing portion 35. The burner unit 28 is sandwiched between the piece 36 and the locking piece 36, the burner unit 28 does not completely engage with the partition plate 15, and the front surface of the burner unit 28 is slightly downward, and therefore the temporary fixing portion 35 is formed. The bottom surface of the locking piece 36 is brought into contact with the locking portion 17 of the temporary fixing receiving portion 20 of the partition plate 15, and the temporary fixing portion 35 is locked.

As described above, the engagement piece receiving portion 45 of the burner unit 28 and the burner engagement piece 12 of the mounting plate 6 are engaged with each other, and the rear engagement portion 42 of the burner unit 28 and the burner receiving plate 2 are engaged.
1, the weight of the burner unit 28 is supported, and the temporary fixing portion 35 of the burner unit 28 engages with the screw fastening piece 19 of the partition plate 15, so that the burner unit 28 is disengaged from the mounting plate 6. Even if you try to rotate in the direction
Since the locking piece 36 of the temporary fixing portion 35 is engaged with the locking portion 17 of the partition plate 15, the burner unit 28 cannot rotate in the direction of coming off the mounting plate 6, and in this state the burner unit 2 cannot be rotated.
8 is temporarily fixed to the mounting plate 6.

In this state, the burner unit upper fixing screw 39 of the front plate 33 of the burner unit 28 is screwed into the threaded hole (not shown) of the partition plate 15, and then both ends of the burner unit lower engaging portion 44 are screwed. The lower fixing screw 47 of the burner unit is screwed into the threaded hole 48 below the mounting plate 6, and further, the screw hole 37 of the temporary fastening portion 35 and the threaded hole of the screw fastening piece 19 of the temporary fastening receiving portion 20. The burner unit 28 is completely fixed by screwing with the burner unit 28.

In this state, since the heat insulating packing 34 having an opening at the center is placed on the upper surface of the burner unit 28, the heat insulating packing 34 is interposed between the lower surface of the partition plate 15 and the upper surface of the burner unit 28. As a result, the state of complete contact is achieved. Further, when the burner unit 28 is completely fixed, the burner unit 28 is completely straight with respect to the partition plate 15, and at the time of temporary fixing, the burner unit 28 is tilted slightly downward, so that the engaging piece 36 that is in contact with the same. The bottom surface and the locking portion 17 of the temporary fixing receiving portion 20 are also separated from each other, and the temporary fixing portion 35 and the temporary fixing receiving portion 20 are engaged with each other by the screwing piece 19 of the temporary fixing receiving portion 20 locking the temporary fixing portion 35. It is only sandwiched and engaged between the piece 36 and the locking piece 36.

Next, the blower unit 53 is fixed by connecting the upper portion of the blower unit 53 and the intake port 54 and screwing the lower portion of the blower unit 53 to the damper unit 55.

Then, the upper part of the board unit 60 is screwed into the threaded holes 61 provided at both ends below the front plate 33, and the lower part of the board unit 60 is screwed into the screw hole provided on the front side of the bottom plate 4. The board unit 60 is fixed by being screwed with (not shown). With this, after connecting each wiring,
When the front panel 5 is fitted and screwed, the assembly is completed.

On the contrary, when removing the burner unit 28 from the water heater main body 1, the board unit 60 is removed after the front panel 5 is removed and the wirings are disconnected, contrary to the assembly procedure.
The upper and lower screws of the fan unit are removed to remove the board unit 60, the upper part of the blower unit 53 and the intake port 54 are disconnected, and the screw which is screwed to the damper unit 55 at the lower part of the blower unit 53 is removed. The unit 53 is removed from the water heater body 1.

Then, the screw which is engaged with the screw fastening portion 38 of the temporary fastening portion 35 and the screw fastening piece 19 of the partition plate 15 is removed, and the burner unit upper fixing screw 39 of the burner unit 28 is turned to form the partition plate 15. Then, the burner unit lower fixing screws 47 at both ends of the burner unit lower engaging portion 44 are rotated to remove the screw from the mounting plate 6 and temporarily fixed.

Then, the temporary fixing portion 35 is turned to the front to disengage the screwing piece 19 of the partition plate 15 from the locking piece 36 of the temporary fixing portion 35, and then the upper portion of the burner unit 28 is turned to the front side. When pulled out, the left and right upper guide pieces 49 on the upper surface of the burner unit 28 are disengaged from the partition plate 15, and the burner unit 28 rotates about the burner engaging piece 12 as a fulcrum, and the burner unit 28 tilts. When in the upright state, the burner unit 28 is manually removed from the water heater main body 1.

[0041]

As described above, the present invention resides in claim 1.
There are, on the back in the water heater main body, and a heat exchanger unit with a built-in heat exchanger, the burner unit to the lower surface is fixed a burner unit for heating the heat exchanger unit, the bottom of the heat exchanger unit to the upper surface A partition plate that is in close contact with the top surface
In the water heater to be attached , the burner unit has a temporary fixing portion rotatably provided on the front side, and the partition plate has a temporary fixing receiving portion engaging with the temporary fixing portion of the burner unit on the front side. Therefore, the burner unit is temporarily fixed and
The contractor puts both hands away from the burner unit and
It is easier to fix the burner unit completely.
When installing the main body of the water heater at a high position,
Prevent the burner unit from falling during tenancy work,
But the work is easy. Also, in claim 2.
And a heat exchanger with a built-in heat exchanger on the back inside the water heater
Unit and a burner for heating the heat exchanger unit
When fixing the knit and the bottom of the heat exchanger unit to the top
Both have a partition plate on the bottom surface that is in close contact with the top surface of the burner unit.
In the attached water heater, the burner unit is the bottom
The lower part of the burner unit is provided on the back side and the front side
A temporary fixing part is rotatably attached to the partition plate, and the partition plate is
The temporary fixing receiving part that engages with the temporary fixing part of the
The lower part of the burner unit is engaged on the back of the water heater body.
Since the burner engaging piece that engages with the bar is provided,
A temporary fixing part is rotatably provided on the front side of the
Engage with the temporary fixing part of the burner unit on the front side of the partition plate
The burner unit is temporarily fixed by providing the temporary fixing receiving part.
Fixed and the operator keeps both hands away from the burner unit
, The burner unit can be completely fixed with the screw.
It's easy to do, with the water heater body installed in a high position
Prevent the burner unit from falling during maintenance work.
It can be stopped and the work can be done easily by one person.
Engage with the lower engaging part of the burner unit inside the back surface of the main body
A burner unit
The burner engaging piece when installing the
Burner unit bottom engaging provided on the back side of the lower part of the unit
The weight of the burner unit itself by engaging the
Can be supported by the burner engaging piece, and
It is no longer necessary to support the weight of the knit with your hand, making it easier to work.
And the burner unit mounting position is
The operator lifts the burner unit using the engaging part as a fulcrum.
The burner can be easily put in the specified mounting position by simply rotating it in the direction
The unit can be set. Also, in claim 3.
In this case, a heat exchanger with a built-in heat exchanger in the body of the water heater
Unit and a burner unit for heating the heat exchanger unit
The bottom of the heat exchanger unit on the
A partition plate that is attached to the bottom surface of the burner unit
It is installed on the inside of the back of the water heater body, and
Supply unit equipped with a corner unit and a partition plate
In the water heater, the burner unit has a burner on the bottom back side.
The lower part of the unit is provided with a temporary fixing part on the front side.
It is rotatably installed and the partition plate is on the front side of the burner unit.
The mounting plate is provided with a temporary fixing receiving portion that engages with the temporary fixing portion.
Engages with the lower engaging portion of the burner unit
Since a burner engaging piece is provided, the burner unit
When attaching the hot water heater to the water heater body, first
Attach the burner engaging piece on the mounting plate to the bottom of the burner unit.
Engage the lower engaging part of the burner unit provided on the back side.
Depending on the weight of the burner unit itself,
The burner unit can be
You don't have to support the weight with your hands and you can work easily.
At the same time, the mounting position of the burner unit is positioned,
Turn the burner unit upwards using the engaging portion as a fulcrum.
Burner unit can be easily installed at the specified mounting position simply by rotating it.
Can be set.

Further, in claim 4, the temporary fixing receiver
The part is located near the center of the front side of the partition plate,
The locking part that is lower than other parts, and
A screw stop with a threaded hole formed in a standing position on the deep side.
The temporary fixing portion has a substantially inverted L-shaped cross section.
Is rotatably supported on the upper center of the front plate by the
When engaged with the stopper receiving part,
When sandwiched, the bottom surface is a temporary fixing receiving part when it is temporarily fixed
Bending that locks the temporary fixing part by contacting the locking part of
Further bend the locking piece of the part and a part of the middle part of the locking piece.
Formed by bending back and screwing piece when engaged with the temporary receiving part
A position corresponding to the threaded hole of the screwing piece
It is composed of a screw fastening part with a screw hole formed in
From the burner engaging piece provided on the mounting plate in the main body of the water heater.
The lower part of the burner unit provided at the back of the lower part of the burner unit
Installed on the front plate of the burner unit with the engaging parts engaged.
Lock the temporary fixing part by rotating the temporary fixing part
The screwing piece provided on the front of the partition plate
It is sandwiched, and the temporary fixing part is attached to the locking part of the temporary fixing receiving part.
The bottom of the locking piece is engaged and the temporary fixing part is locked.
The burner unit is removed from the mounting plate.
Even if you try to rotate it to the
Since the stopper is engaged, the burner unit can be removed from the mounting plate.
The burner unit cannot be rotated in the disengaging direction, and the burner unit
Fully temporarily fixed to the mounting plate,
With both hands separated, use a screw to complete the burner unit.
It can be easily fixed to all,
Burner for maintenance work when installed in a high position
Prevents the unit from falling, making it easier for one person to work
Of.

Further , in claim 5, the burner unit is
If a rear surface engaging portion having a substantially U-shaped cross section is provided on the rear surface of the
Also, engage with the back engaging part on the inside of the back of the water heater body.
Is provided with a rear engagement receiving portion, and the rear engagement receiving portion is attached.
It is provided on the left and right of the board, and the center is hollow and the area around it is tapered.
A guide recess with a tapered tapered surface
Of the burner receiving plate with a convex cross section provided integrally with the cutting plate,
Bend the bottom part of the burner receiving holes on the left and right of the convex surface.
Since it consists of the contact surface formed by
The back engaging part on the back of the knit is the bar of the burner receiving plate.
After passing through the hole, the tip is designed as a guide recess in the mounting plate.
And the back-side engaging part contacts the contact surface of the burner receiving plate.
The weight of the burner unit is also applied to the burner support plate,
Even if the surface-engaging part is slightly misaligned and passes through the burner receiving hole,
The tip of the engaging part hits the tapered surface, and the rear engaging part
Can be guided to a predetermined position.

[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, the partition plate, and the burner receiving plate when assembled.

FIG. 4 is a side view of the same.

FIG. 5 is an exploded perspective view of the burner unit.

FIG. 6 is a front view when a burner unit is incorporated in a mounting plate having the partition plate and a burner receiving plate attached thereto.

FIG. 7 is a side view of the same.

FIG. 8 is a rear view of the burner unit.

FIG. 9 is a plan view of a main part showing an engaged state of the temporary fixing portion and the temporary fixing receiving portion.

FIG. 10 is a cross-sectional view of essential parts showing an engagement state between the temporary fixing portion and the temporary fixing receiving portion.

FIG. 11 is a cross-sectional view of essential parts showing an engagement state between the back surface engagement portion and the back surface engagement receiving portion.

FIG. 12 is a cross-sectional view of an essential part showing the mounting state of the upper fixing screw of the burner unit.

FIG. 13 is a perspective view of essential parts showing a conventional burner mounting structure.

[Explanation of symbols]

1 water heater body 9 Tapered surface 12 Burner engagement piece 15 dividers 20 Temporary stopper receiving part 23 Contact surface 24 Rear engagement receiving part 28, burner unit 35 Temporary stop 42 Back engaging part 44 Burner unit lower engaging part 51 heat exchanger unit

─────────────────────────────────────────────────── ─── 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 9/18 F24H 9/06 F23D 14/02

Claims (5)

(57) [Claims] On the back 1. A within the water heater body, and a heat exchanger unit with a built-in heat exchanger, a burner unit for heating the heat exchanger unit, the lower surface is fixed to the bottom of the heat exchanger unit to the upper surface in the water heater for mounting the partitioning plate in close contact with the upper surface of the burner unit, said Banayuni'
Of the burner unit of the water heater, characterized in that a temporary fixing portion is rotatably provided on the front surface side, and the partition plate is provided with a temporary fixing receiving portion that engages with the temporary fixing portion of the burner unit on the front side. Mounting structure. 2. A heat exchanger is built in on the rear surface of the body of the water heater.
A heat exchanger unit and heating the heat exchanger unit
Secure the burner unit and the bottom of the heat exchanger unit to the top.
And the bottom surface of the burner unit
In the water heater to which the cut plate is attached, the burner unit
Of the burner unit at the bottom of the bottom part together.
A temporary fixing part is rotatably provided on the front side of the
Temporary lock receiver that engages with the temporary lock part of the burner unit on the front side
Section, and the lower part of the burner unit on the back of the body of the water heater
A burner engaging piece that engages with the engaging portion is provided .
Mounting structure of the burner unit of hot water supply device that. 3. A heat having a heat exchanger built into the body of the water heater.
Exchanger unit and bar for heating the heat exchanger unit
The heat exchanger unit and the bottom of the heat exchanger unit.
And a partition plate that sticks to the upper surface of the burner unit on the lower surface
The heat exchanger unit on the inside of the back of the water heater.
Equipped with a mounting plate for attaching the partition plate
In the hot water heater, the burner unit is
The lower part of the burner unit is provided and temporarily fixed on the front side.
A female part is rotatably provided, and the partition plate is a burner on the front side.
A temporary fixing receiving portion that engages with the temporary fixing portion of the knit is provided, and
The mounting plate and the lower engaging portion of the burner unit
Mounting structure of the burner unit of hot water supply equipment characterized in that a burner engagement piece to be engaged. 4. The temporary fixing receiving portion is substantially on the front side of the partition plate.
It is provided in the center, and the height of the start-up is made lower than other parts.
Standing at a position slightly behind the locking part and the locking part
And a screw fastening piece having a thread cutting hole formed therein.
The stopper has a substantially inverted L-shaped cross section and is located above the center of the front plate.
It is movably supported by a shaft and temporarily receives the partition plate. It engaged with the hook
At the same time, sandwich the screwing piece of the temporary fixing receiving part and fix it temporarily.
The bottom surface may come into contact with the locking part of the temporary fixing receiving part in the fixed state.
And the engaging piece of the bent portion that engages the temporary fixing portion with
Part of the middle part of the stop piece is bent back to form a temporary stop.
When it engages with the female receiving part, it abuts on the screw stop piece and
A screw hole was formed at the position corresponding to the threaded hole in the female piece.
4. A screw fastening portion according to claim 3,
Mounting structure for burner unit of water heater. 5. A substantially U-shaped cross section on the back surface of the burner unit.
The back of the water heater main body is provided with the shape-shaped back engaging part.
A back side engagement receiving part that engages with the back side engaging part is provided inside.
The rear engagement receiving portions are provided on the left and right sides of the mounting plate,
The center is hollow and the circumference is tapered.
Provided integrally with the guide recess with the par surface and the partition plate
Provided on the left and right of the convex surface of the burner receiving plate with a convex cross section
Abutment surface formed by bending the lower part of the burner receiving hole
5. The burner for a water heater according to claim 4, wherein
Unit mounting structure.