JP3689228B2 - Outdoor combustion appliance - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an outdoor-installed combustion appliance that heats a circulating fluid that flows through a circuit for hot water heating by burning a fuel such as gas or petroleum.
[0002]
[Prior art]
Conventionally, in this kind of thing, in order to heat the circulating fluid flowing in the hot water heating circuit such as hot water type floor heating installed in the room, hot water type hot air heater, hot water type radiator, A tank made of synthetic resin is placed in the appliance body of the combustion appliance to store a certain amount of circulating fluid flowing in the hot water heating circuit, and combustion gas generated by burning fuel such as gas and oil in the combustion section The heat exchanger is heated, and the circulating fluid in the tank is sent to the heat exchanger by a circulation pump to increase the temperature by heat exchange, and then sent to the hot water circuit and dissipates heat through the hot water heating circuit. The circulating fluid that had fallen in temperature was returned to the tank.
[0003]
As shown in FIG. 9, the tank is provided with a replenishing port 101 for replenishing the circulating fluid into the tank by threading the outer periphery of the tip, and the replenishing port 101 protrudes outside the instrument body. A projecting hole 102 for rising is provided around the top plate 103 of the instrument body.
[0004]
A cylindrical shape with a bottom is provided on the inner bottom surface of the replenishing port cap 104 whose inner diameter is larger than the outer diameter of the raised portion of the protruding hole 102. An engagement portion 105 that is threaded to engage with the threaded portion of the replenishing port 101 is provided, and the replenishing port 101 is closed by engaging the replenishing port cap 104 with the replenishing port 101 of the tank. It was.
[0005]
In addition, a communication hole 106 is provided on the circumference of the replenishing port 101 for communicating the space between the outer periphery of the engaging portion 105 and the inner periphery of the replenishing port cap 104 and the inside of the replenishing port 101 of the tank. Even if the circulating fluid in the tank increases or the water in the circulating fluid evaporates into steam, the air in the tank as shown in FIG. 9a and the generated steam escape through the communication hole 106 to the outside of the tank, The pressure in the tank is not high.
[0006]
[Problems to be solved by the invention]
However, since there is a gap between the rising portion around the protruding hole 102 and the tip end portion of the replenishing port cap 104, it flows into the gap as shown in FIG. Thus, there is a drawback that rain enters the instrument body from the gap between the protruding hole 102 and the supply port 101.
[0007]
Further, when a part of the vapor generated by evaporation of the water in the circulating fluid is condensed on the inner surface of the replenishing port cap 104 to form water droplets, the water droplets stand around the protruding holes 102 as shown in FIG. There is a drawback that the device enters the instrument main body through a gap between the raised portion and the tip portion of the supply port cap 104.
[0008]
[Means for solving problems]
The present invention pays attention to this point, and in order to solve the above-mentioned drawbacks, in particular, in the structure of claim 1, the substantially box-shaped instrument body is closed by a combustion portion for burning fuel and usually by a cap. a tank for circulating fluid hot water heating having a supply port that, with arranging a heat exchange section for heating a circulating liquid sent from a tank by combustion gas from the combustion unit, pressure relief to supply port of the tank A hole is formed in the top plate of the instrument body so that the supply port protrudes outside the instrument body. In the outdoor-installed combustion appliance that covers and covers the replenished replenishing port, a bulging part formed higher than the replenishing port projecting part is provided on the front side of the replenishing port projecting part provided on the top plate. Retraction formed by retracting toward the protruding hole on the opposite side of the bulging part The cover lid is formed from a storage portion and a collar portion having a standing portion formed at the tip around the end of the storage portion, and when the cover lid is put on the supply port, A notch portion is formed at a position relative to the bulging portion and the retracting portion of the replenishing port protrusion .
According to a second aspect of the present invention, a rising portion having an L-shaped cross section is formed around the protruding hole of the supply port protruding portion of the top plate, a groove is formed on the outer periphery of the side surface of the packing, and the packing is formed on the rising portion. The groove portion is inserted and is closely attached so that the periphery of the protruding hole is sandwiched from the front surface and the back surface.
[0009]
[Action]
In the first aspect of the invention, the amount of the circulating fluid in the tank 17 increases as a result of the heating operation being started and the temperature of the circulating fluid increasing and volume expansion, and the water in the circulating fluid as a result of the temperature of the circulating fluid increasing. When the pressure in the tank 17 increases due to vaporization of vapor and the like, the air in the tank 17 and the generated steam are released from the pressure formed on the rear side of the circumferential portion of the supply port 18 of the tank 17. Through the hole 20, the tank 17 exits from the inside of the tank 17 to the space between the outer surface of the supply port 18 and the cap 19 and the inner surface of the cover lid 33.
[0010]
The space between the projection hole 23 of the replenishment port projection 21 of the top plate 2 and the replenishment port 18 is completely closed by the packing 29, and on the front side of the cover lid 33, the standing portion 36. The boundary portion of the supply port protrusion 21 with respect to the cutout portion 39 is a bulge portion 27 that is formed to be higher than the supply port protrusion 21 and bulge in a reverse semicircular cross section. On the rear side of the cover lid 33, the boundary between the supply port protrusion 21 and the notch 39 of the standing portion 36 is not provided. The retraction portion 28 is formed by being retracted so as to be located closer to the protrusion hole 23 than the boundary between the both end portions, so that the clearance between the retraction portion 28 and the notch portion 39 is large, so that air and steam are replenished. Pressure relief hole formed on the rear side toward the circumferential portion of the mouth 18 0 in which it escapes into the lid 33 outside shroud through smoothly gap between the pull portion 28 and the notch 39 as it is.
[0011]
Further, even if the vapor that has escaped from the tank 17 into the cover lid 33 is condensed on the inner surface of the cover lid 33 to form water droplets, the gap between the pull-in portion 28 and the cutout portion 39 on the rear surface side toward the cover lid 33. It is possible to smoothly pass through the gap and drain out of the cover lid 33.
[0012]
Further, in the invention of claim 2, a rising portion 24 having an L-shaped cross section is formed around the hole 23 of the replenishing port protrusion 21 of the top plate 2. Since the formed groove portion 32 is inserted and is in close contact with the periphery of the protruding hole 23, even if rain has infiltrated between the intimate groove portion 32 and the supply port protruding portion 21, the infiltrated rain will rise. This prevents the rain from flowing into the instrument main body 1 through the groove 32 because it cannot go around the portion 24.
[0013]
【Example】
Next, an outdoor installation type burning appliance according to the present invention will be described with reference to an embodiment shown in the drawings.
1 is an instrument body of an outdoor installation type combustion appliance, which is composed of a top plate 2, a front panel 3, a middle plate 4 in which a side plate and a rear plate are integrated, and a bottom plate 5, and is installed outdoors. is there.
[0014]
The front panel 3 is formed with an exhaust port 6 for exhausting exhaust gas at the upper right, and an intake port 7 for intake of air is formed on the left side of the exhaust port 6 from the upper center of the front panel 3 to the middle. Many are formed vertically.
[0015]
Further, on the left side of the air inlet 7, a cooling port 9 is vertically extended from the middle of the left end of the front panel 3 to the lower side in order to cool the power transformer 8 and other electrical components disposed in the appliance body 1. A plurality are formed.
[0016]
Reference numeral 10 denotes a partition plate, which is arranged at a position slightly left from the center in the instrument main body 1 and divides the instrument main body 1 left and right.
[0017]
11 is a combustion part, which is arranged on the right side in front of the instrument body 1 and burns in the combustion cylinder 12 by the supplied fuel oil and combustion air, and the combustion gas passes through the upper heat exchange part 13. Exhausted from the exhaust port 6.
[0018]
Reference numeral 14 denotes a substantially box-shaped air supply section that is arranged between the partition plate 10 and the combustion section 11 and guides the air flowing in from the air inlet 7 to the air inflow section 15 provided below the back surface of the intermediate plate 4. It is.
[0019]
Reference numeral 16 denotes a board mounting plate, which is provided so as to further divide the left compartment in the instrument body 1 partitioned by the partition plate 10 in the front-rear direction.
[0020]
Reference numeral 17 denotes a synthetic resin tank, which is disposed in the rear compartment partitioned by the board attachment plate 16 in the left compartment in the instrument body 1 and stores a certain amount of circulating fluid flowing in the hot water heating circuit. A cylindrical replenishing port 18 for replenishing the circulating fluid is provided above and is normally closed by a cap 19.
[0021]
Further, a pressure relief hole 20 for allowing air or steam in the tank 17 to escape to the outside of the tank 17 or for air to enter the tank 17 from the outside of the tank 17 is provided behind the circumferential portion of the supply port 18. Is formed.
[0022]
Reference numeral 21 denotes a replenishing port protrusion provided at the left end toward the top plate 2, which is provided higher even if the left end of the top 22 which has been drawn by a press machine and is raised further is further reduced.
[0023]
Near the center of the supply port protrusion 21, a supply hole 23 is provided for the supply port 18 of the tank 17 to protrude out of the instrument body 1. Forming.
Further, threaded fixing holes 25 and 26 are formed on the left and right sides of the protruding hole 23.
[0024]
Reference numeral 27 denotes a bulging portion, which is substantially at the center on the front side of the supply port protrusion 21 and is higher than the supply port protrusion 21 by drawing or the like at the boundary between the supply port protrusion 21 and the top 22 so that the cross section is an inverted semicircle. It is formed by bulging into a shape.
[0025]
Reference numeral 28 denotes a lead-in portion, which is formed so that the substantially central portion of the boundary with the top portion 22 on the back side of the supply port protruding portion 21 is positioned more than the protruding hole 23 from the boundary of both end portions by drawing or the like. is there.
[0026]
A disk-shaped packing 29 is formed with a through hole 30 through which the tip of the replenishing port 18 of the tank 17 penetrates in the center, and is in close contact with the outer periphery of the through part of the replenishing port 18 around the through hole 30. A close contact portion 31 is provided, and a groove portion 32 is formed in the outer peripheral portion of the side surface of the packing 29 so that the rising portion 24 of the protruding hole 23 is sandwiched from the front surface and the back surface of the groove portion 32. And the packing 29 is fixed to the protruding hole 23.
[0027]
Reference numeral 33 denotes a synthetic resin cover that covers the replenishment port 18 of the tank 17 projecting from the projecting hole 23 of the top plate 4 from above, and has a flange 35 formed around the end of the box-shaped storage unit 34. Further, when the tip of the collar portion 35 is covered with the replenishing port 18 from above, the standing portion bent substantially at right angles to the collar portion 35 so that the inner surface of the collar portion 35 is in contact with the outer surface of the replenishing port protrusion 21. 36 is formed, and the standing portion 36 covers the periphery of the supply port protrusion 21.
[0028]
Further, when the cover lid 33 is put on the replenishing port 18, the collar portion 35 has a communication hole for communicating with the fixing holes 25 and 26 at a position directly above the fixing holes 25 and 26 of the replenishing port protrusion 21. 37 and 38 are formed.
[0029]
The standing portion 36 is formed with a notch 39 at a position relative to the bulging portion 27 and the retracting portion 28 of the replenishing port protrusion 21 when the cover lid 33 is put on the replenishing port 18. is there.
[0030]
40 is a fixing pin, and when the cover lid 33 is put on the replenishing port 18, it is inserted from the communication holes 37 and 38 of the cover lid 33 toward the fixing holes 25 and 26 of the replenishing port protruding portion 21 and rotated. The threaded portion at the tip engages with the threaded portions of the fixing holes 25 and 26 and is fixed to the top plate 2.
[0031]
Reference numeral 41 denotes a circulation pump, which sends the circulating fluid in the tank 17 to the heat exchanging unit 13 and raises the temperature by heat exchange, and then sends it to the hot water heating circuit outside the appliance body 1 and passes through the hot water heating circuit. Thus, the circulating fluid whose temperature has been reduced by heat dissipation is returned to the tank 17 in the instrument body 1.
[0032]
A blower 42 blows air from the intake port 7 to the air supply unit 14 and then through the air inflow unit 15 to the combustion unit 11, and passes the heat exchange unit 13 using the combustion gas generated by the combustion as exhaust gas. The air is exhausted from the exhaust port 6.
[0033]
Reference numeral 43 denotes an oil receiving portion that feeds fuel oil from a fuel tank (not shown) outside the instrument body 1 and always stores a certain amount of fuel oil. 11 to feed oil.
[0034]
Reference numeral 44 denotes a printed circuit board that receives an operation signal transmitted by operating an operation button of an indoor operation panel or an indoor unit through a signal line, and controls the operation of the combustion appliance based on the operation signal. Is.
[0035]
Next, the operation of the above embodiment will be described.
First, when the circulating fluid in the tank 17 increases or when the water in the circulating fluid evaporates and becomes vapor and the pressure in the tank increases, the air in the tank 17 and the generated vapor are supplied to the replenishment port 18 of the tank 17. Through the pressure relief hole 20 formed on the rear side toward the circumferential portion of the gas, and then escapes from the tank 17 to the space between the outer surface of the supply port 18 and the cap 19 and the inner surface of the cover lid 33.
[0036]
Next, the air or steam that has escaped into the space between the outer surface of the supply port 18 and the cap 19 and the inner surface of the cover lid 33 is between the protrusion hole 23 of the supply port protrusion 21 of the top plate 2 and the supply port 18. Is completely closed by the packing 29, and therefore passes through a gap between the boundary portion of the supply port protrusion 21 and the notch 39 of the standing portion 36 of the cover lid 33, and then goes out of the cover lid 33. Go through.
[0037]
At this time, on the front side of the cover lid 33, the boundary of the supply port protrusion 21 with respect to the notch 39 of the standing portion 36 is higher than the supply port protrusion 21 and swells in a reverse semicircular cross section. Since it is the bulging part 27 formed by making it protrude, there is almost no gap between the bulging part 27 and the notch part 39, and air and a vapor | steam are very difficult to pass through.
[0038]
Further, on the rear side of the cover lid 33, the boundary of the supply port protrusion 21 is formed closer to the protrusion hole 23 than the boundary of both ends with respect to the notch 39 of the standing portion 36. Since the drawn-in portion 28 is provided, the gap between the drawn-in portion 28 and the cutout portion 39 is large, and air and steam are very easy to pass through.
[0039]
Therefore, the air or vapor that has escaped into the space between the outer surface of the replenishing port 18 and the cap 19 and the inner surface of the cover lid 33 is directed toward the circumferential portion of the replenishing port 18 by the pressure relief hole 20 of the replenishing port 18 of the tank 17. Most of the air or steam passes smoothly through the gap between the rear-side pull-in portion 28 and the cut-out portion 39 toward the cover lid 33 and covers the cover lid. 33 escapes outside.
[0040]
Further, even if the vapor escaping from the tank 17 into the cover lid 33 is condensed on the inner surface of the cover lid 33 to form water droplets, the packing 29 completely forms the gap between the projection hole 23 of the supply port protrusion 21 and the supply port 18. Therefore, the lead-in portion 28 and the cut-out portion 39 on the rear surface side toward the cover lid 33 do not flow into the device main body 1 from between the supply port protrusion 21 and the supply port 18. It smoothly passes through the gap between the two and flows out of the cover lid 33.
As a result, water droplets remain in the cover lid 33, which freezes when the winter air temperature is low, blocks air passages such as the pressure relief holes 20 through which air and steam escape, accelerates the deterioration of the packing 29, The cover lid 33 is not damaged by the volume expansion of water droplets due to freezing.
[0041]
Next, when rain hits the instrument body 1, there is almost no gap between the bulging portion 27 and the notch portion 39 on the front side of the cover lid 33, and rain enters the cover lid 33 from the gap. Almost no inflow.
[0042]
In addition, since the gap between the drawing-in portion 28 on the rear surface side and the cutout portion 39 toward the cover lid 33 is large, rain enters the cover lid 33 from the gap, but the supply port protrusion 21 Since the gap between the projecting hole 23 and the replenishing port 18 is completely closed by the packing 29, it cannot enter the instrument main body 1, and eventually from the gap between the drawing-in part 28 and the notch part 39. It flows out of the cover lid 33 again.
[0043]
Further, a rising portion 24 having an L-shaped cross section is formed around the hole 23 of the supply port protrusion 21 of the top plate 2, and a groove portion 32 formed on the outer periphery of the side surface of the packing 29 is inserted into this. Since the protrusion hole 23 is in close contact with the front and back surfaces, even if rain has infiltrated between the close groove portion 32 and the replenishing port protrusion 21, This prevents the riser 24 from passing over and prevents rain from flowing into the instrument body 1 through the groove 32.
[0044]
Further, in this embodiment, the bulging portion 27 and the drawing portion 28 are provided in the replenishing port protruding portion 21, and the notch portions 39 are provided on the front side and the rear side toward the standing portion 36 of the cover lid 33. Since the cover lid 33 can be attached to the top plate 2 regardless of which of the front and rear cutouts 39 on the front and rear of the lid 33, the work can be easily performed without worrying about the direction of the cover lid 33.
[0045]
【The invention's effect】
As described above, in the invention of claim 1, in the substantially box-shaped instrument body, a combustion part for burning fuel, a tank for circulating fluid for hot water heating having a supply port normally closed by a cap, In an outdoor installation type combustion appliance provided with a heat exchange unit for heating circulating fluid sent from a tank by combustion gas from the combustion unit, a pressure relief hole is formed in the supply port of the tank, and the supply port Is formed in the top plate of the instrument body, and the space between the projection hole and the supply port is closed with packing, and the pressure relief hole and the exterior of the instrument body are ventilated. Since the cover lid is detachably provided to cover the replenishing port that has a notch and protrudes out of the instrument body, the air in the tank and the generated vapor are projected from the replenishing port protrusion of the top plate by packing. Without flowing into the instrument body from between the hole and the supply port, From the pressure relief hole formed on the rear side toward the circumferential part of the feed port, the gap between the lead-in part and the notch part passes smoothly through the cover and comes out of the cover lid. Can be prevented.
[0046]
In addition, even if the vapor that has escaped from the tank into the cover lid has condensed on the inner surface of the cover lid to form water droplets, the packing will enter the instrument body from between the protrusion hole of the top plate supply port protrusion and the supply port. Without flowing, it can smoothly pass through the gap between the pull-in portion on the rear surface side and the notch portion toward the cover lid and drain out of the cover lid.
[0047]
Further, in the invention of claim 2, even if rain has permeated between the groove portion of the packing and the replenishment port protrusion of the top plate, the rising portion of the L-shaped cross section around the hole of the protrusion hole, Since the groove portion of the packing is inserted and is in close contact, the soaked rain cannot go around beyond the rising portion, and can be prevented from flowing into the instrument body through the groove portion.
[Brief description of the drawings]
FIG. 1 is a front view showing a combustion apparatus with an embodiment of the present invention.
FIG. 2 is a front view showing a state where a front panel is removed from the instrument body.
FIG. 3 is a side view of the same.
FIG. 4 is a plan view of the cover lid.
FIG. 5 is a front view of the covering lid.
FIG. 6 is a main part plan view showing a supply port protrusion formed on the top plate.
7 is a cross-sectional view taken along line 3A-A in FIG.
8 is a cross-sectional view taken along line 1B-B in FIG.
FIG. 9 is a cross-sectional view of a main part showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Instrument body 2 Top plate 11 Combustion part 13 Heat exchange part 17 Tank 18 Supply port 19 Cap 20 Pressure relief hole 23 Protrusion hole 29 Packing 33 Cover lid 39 Notch part

Claims (2)

In a substantially box-shaped instrument body, a combustion part for burning fuel, a tank for circulating water for warm water heating having a replenishment port normally closed by a cap, and a combustion gas from the combustion part are sent from the tank. with arranging a heat exchange unit for heating the circulating fluid to be to form a pressure relief hole to supply port of the tank, a protrusion hole for the supply opening is protruded to the outside of the appliance body to the top plate of the instrument body Forming and closing the gap between the projecting hole and the replenishing port with a packing, and covering the replenishing port protruding outside the instrument body with a cover and covering the replenishment provided on the top plate A bulging portion formed higher than the replenishing port projecting portion is provided on the front side of the replenishing port projecting portion; A standing part is formed at the tip around the storage part and the end of the storage part. Is formed from the flange portion, when covered with the overcap in the supply port, characterized in that the formation of the notches in the position relative to the bulging portion and the pull portion of the supply port projecting portion of the standing portion Outdoor Stationary combustion appliance. A rising portion having an L-shaped cross section is formed around the protrusion hole of the supply port protruding portion of the top plate, and a groove portion is formed on the outer periphery of the side surface of the packing, and the groove portion of the packing is inserted into the rising portion. The outdoor installation type combustion appliance according to claim 1, wherein the projecting hole is closely attached so as to be sandwiched between the front surface and the back surface .

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