KR100391257B1 - For heating and hot-water condensing gas boiler's heat exchanger which has a type of upward burning - Google Patents

Abstract

The present invention relates to a heat exchanger of a condensing boiler, wherein a burner part, a sensible heat part and a latent heat part are vertically integrally formed, and the latent heat part is provided with an exhaust gas guide member for maximizing the flow of the exhaust gas. In order to maximize the absorption of the latent heat of condensation, the latent heat exchanger is formed in two stages, which maximizes the heat transfer area, creates sensible heat and condensation conditions, improves heat exchange efficiency, and ensures compactness and corrosion resistance of the device. It relates to a heat exchanger of the upstream condensing boiler for heating and hot water, characterized in that to enable.

Description

Heat exchanger of upstream condensing boiler for heating and hot water {FOR HEATING AND HOT-WATER CONDENSING GAS BOILER'S HEAT EXCHANGER WHICH HAS A TYPE OF UPWARD BURNING}

The present invention relates to a heat exchanger of a condensing boiler, wherein a burner part, a sensible heat part and a latent heat part are vertically integrally formed, and the latent heat part is provided with an exhaust gas guide member for maximizing the flow of the exhaust gas. In order to maximize the absorption of the latent heat of condensation, the latent heat exchanger is formed in two stages, which maximizes the heat transfer area, creates sensible heat and condensation conditions, improves heat exchange efficiency, and ensures compactness and corrosion resistance of the device. It relates to a heat exchanger of the upstream condensing boiler for heating and hot water, characterized in that to enable.

In general, heating and hot water boilers used in homes are divided into oil boilers and gas boilers according to the fuel used. Among these, gas boilers having low air pollution and easy use are mainly used, and liquefied natural gas (LNG) is mainly used as the fuel. Gas boilers can be divided into various types according to the control method or sealed state, and can be classified into condensing and non-condensing types according to heat sources for heating the heating water.

FIG. 1 is a schematic view showing a conventional condensing boiler of a downward combustion method. As shown in FIG. 1, a predetermined amount of air and gas are supplied to the burner 13 by the blower fan 12 to thereby burn the flame 14. And heat of the flame 14 is transferred to the heat exchanger 15 to generate heat exchange, thereby converting the low temperature water flowing through the inner pipe into the high temperature water.

In addition, the lower heat exchangers 15 which are not directly exposed to heat are heat-exchanged by contacting the high-temperature exhaust gas, and the condensed water generated by heat emission of the exhaust gas is discharged to the outside through the drain pipe 16. The exhaust gas lowered below the dew point temperature through heat exchange is discharged to the outside through the exhaust duct 17.

However, the downward combustion condensing boiler has a disadvantage in that the exhaust duct 17 excessively occupies the internal volume of the boiler, which makes it difficult to reduce the weight and compactness, and the exhaust load is excessive, thereby increasing the load of the blower fan 12.

Figure 2 is a schematic view showing a conventional condensing boiler of the up-combustion method, as shown, by the blowing fan 12 a predetermined amount of air and gas is supplied to the burner 13 by the flame 14 And heat of the flame 14 is transferred to the main heat exchanger 22 to make the heating water flowing in the inner pipe of the main heat exchanger 22 high temperature.

In addition, the exhaust gas contacts and heat exchanges with the subsidiary heat exchanger 23 provided on the flow path of the exhaust duct 17, thereby primarily heating the heating water flowing in the subsidiary heat exchanger 23.

The upward combustion condensing boiler has a problem in that thermal efficiency is lowered by forming a dead zone between the main heat exchanger 22 and the auxiliary heat exchanger 23, in which an exhaust gas emits heat without a special action. .

In addition, the exhaust duct 17 has a structure in which the flow path of the exhaust duct 17 moves out of the combustion chamber and receives a lot of exhaust resistance, and a lot of space is restricted due to the exhaust flue in a limited space.

The present invention has been made in view of the above, the present invention is a double structure for preventing the direct condensate contacting the copper tube by using aluminum precursor, the copper tube having a good heat transfer rate inside the material of the latent heat exchanger of the gas boiler. It is to provide a heat exchanger of the upstream condensing boiler for heating and hot water to maximize the efficiency of the heat exchanger and to reduce the size and weight of the boiler by adopting a heat exchanger of the heat exchanger in the same area in the vertical direction and the combustion chamber.

1 is a schematic view showing a conventional condensing boiler of the downward combustion method.

Figure 2 is a schematic view showing a conventional condensing boiler of the upward combustion method.

3 is a block diagram of a condensing boiler according to the present invention.

Figure 4 is a detailed cross-sectional view of the latent heat portion according to the present invention.

Explanation of symbols on the main parts of the drawing

31: burner part 32: burner

33: heating water inlet pipe 34: condensate discharge pipe

35: heating water discharge pipe 41: sensible heat unit

42: combustion chamber 43: sensible heat exchanger

44: connector 51: latent heat portion

52: first latent heat exchanger 53: second latent heat exchanger

54: copper pipe 55: aluminum pipe

56: condensate outlet 57: outlet

58: outer passage 61: exhaust gas guide member

62: lower plate 63: branch protrusion

64: upper plate 71: the first heat exchange pipe

72: second heat exchange pipe 73: third heat exchange pipe

74: fourth heat exchange pipe 75: fifth heat exchange pipe

76: sixth heat exchange pipe 77: seventh heat exchange pipe

78: eighth heat exchange pipe

In order to achieve the above object, in the present invention, the burner is a burner to generate heat by burning; A sensible heat unit formed at an upper portion of the burner unit to form a sensible heat exchanger for directly exchanging heat generated by the burner; In the heat exchanger of the condensing boiler formed on top of the sensible heat portion, the latent heat absorbing portion of the exhaust gas absorbs heat of the exhaust gas is integrally stacked in the same area in the vertical direction,

A first and second latent heat exchanger heat exchanger configured to be symmetrical with respect to the center to absorb heat of the exhaust gas; An exhaust gas guide member which guides the exhaust gas and collects condensed water while fixing the first and second latent heat exchangers; A condensate outlet for discharging condensate falling into the exhaust gas guide member to a condensate discharge tube; It is formed on the upper end of the latent heat portion provides an heat exchanger of the upstream condensing boiler for heating and hot water, characterized in that consisting of an exhaust port for discharging the exhaust gas to the outside.

In this case, the first, second, third, and fourth heat exchange pipes forming the first latent heat exchanger and the fifth, sixth, seventh, and eighth heat exchange pipes forming the second latent heat exchanger are horizontally disposed in two stages. It is desirable to be multi-structured and multi-arranged to absorb heat.

Further, in the present invention, the first, second, third, fourth, fifth, sixth, seventh, and eighth heat exchange pipes are made of the same copper pipe inside to prevent corrosion, and the outside is made of aluminum. It has a structure laminated with a pipe, and when any one of the first, second, third, fourth, fifth, sixth, seventh, and eighth heat exchange pipes is connected to the heating water inlet pipe, The other is effective to be connected to the connector.

Meanwhile, in the present invention, the exhaust gas guide member is formed under each of the first and second latent heat exchanger heat exchangers to guide the exhaust gas and the condensed water while fixing one side portion of the first and second latent heat exchanger heat exchangers. And the lower plate to collect the condensate falling while guiding the exhaust gas to the condensate outlet; A branching protrusion for branching the exhaust gas moving to the upper center by the lower plate on both sides is formed at the center, and the exhaust gas branched to both sides by the branching protrusion passes through the first and second latent heat exchanger heat exchangers, respectively. After moving downward while moving to the upper through the outer flow path is characterized in that consisting of a top plate for guiding to be discharged to the exhaust port.

In addition, the first and second latent heat exchanger and the exhaust gas guide member preferably form a hollow portion or an insulating material interpolated to prevent heat loss.

In addition, it is effective to use the sensible heat exchanger 43 by rolling a pipe of the same material or an aluminum pipe.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only and the same parts as in the conventional configuration using the same reference numerals and names.

3 is a configuration diagram of a condensing boiler according to the present invention, Figure 4 is a detailed cross-sectional view of the latent heat portion according to the present invention.

As shown, the heat exchanger of the condensing boiler according to the present invention includes a burner unit 31 for burning the burner 32 to generate heat; A sensible heat part 41 in which a sensible heat exchanger 43 for directly exchanging heat generated in the combustion chamber 42 formed on the burner part 31 is wound around the combustion chamber 42; The latent heat portion 51 formed above the sensible heat portion 41 and absorbing heat of the exhaust gas is integrally stacked in a vertical direction.

The latent heat portion 51 is interpolated from side to side such that the first and second latent heat exchangers 52 and 53 that absorb heat of the exhaust gas are symmetrical with respect to the center thereof, and the first and second latent heat exchanger heat exchangers. An exhaust gas guide member 61 for guiding the exhaust gas and the condensate while fixing the 52 and 53 is mounted to surround the first and second latent heat exchangers 52 and 53, and the exhaust gas guide member ( Condensate discharge port 56 for discharging the condensate falling into the condensate discharge pipe 34 is disposed on the upper side of the exhaust gas guide member 61 at both ends.

An exhaust port 57 is formed at the upper end of the latent heat portion 51 to discharge the exhaust gas to the outside.

In this case, the first latent heat exchanger 52 may include first, second, third, and fourth heat exchange pipes 71, 72, 73, and 74, and the second latent heat exchanger 53 may include fifth, The sixth, seventh, and eighth heat exchange pipes (75, 76, 77, 78) are formed in a layer arrangement inclined in two stages, the first, second, third, fourth, fifth, sixth The seventh and eighth heat exchange pipes (71, 72, 73, 74, 75, 76, 77, 78) are made of copper pipe 54 of the same material to prevent corrosion, and the aluminum pipe (55) to the outside. ) Is rolled up to give a laminated structure.

In addition, the first, second, third, fourth, fifth, sixth, seventh, and eighth heat exchange pipes 71, 72, 73, 74, 75, Any one of the 76,77,78 is connected to the heating water inlet pipe 33, the other is connected to the connecting pipe 44 through the sensible heat exchanger 43 of the sensible heat 41 effective.

Meanwhile, the exhaust gas guide member 61 guides the exhaust gas and the condensed water while fixing one side portion of the first and second latent heat exchanger units 52 and 53. 52 and 53; a lower plate 62 formed at each lower portion and having an inclination to send condensed water falling while collecting exhaust gas to the center to the condensate discharge port 56; A branching protrusion 63 is formed at the center by the lower plate 62 to branch the exhaust gas moving upwardly to both sides, so that the branched exhaust gas opens the first and second latent heat exchanger 52, 53. It is composed of a top plate 64 for guiding the discharge to the exhaust port 57 through the outer passage 58 after passing through each.

In addition, the first and second latent heat exchangers 52 and 53 and the exhaust gas guiding members 61 which come into contact with the exhaust gas may form a hollow part or an insulating material to interpolate to prevent heat loss due to the warming effect by the air layer. do.

In addition, the sensible heat exchanger 43 of the sensible heat portion 41 is used to roll the pipe made of the same material or aluminum in order to increase the heat exchange rate.

Referring to the operation of the present invention having such a configuration as follows.

When the burner 32 of the burner part 31 is operated, combustion occurs in the combustion chamber 42 to generate heat, thereby directly transferring heat to the sensible heat exchanger 43 which surrounds the combustion chamber 42, and a combustion process. Exhaust gas generated in the air is discharged to the latent heat part 51, and the exhaust gas is collected by the lower plate 62 toward the center and rises, and then the first latent heat part heat exchanger 52 and the second heat are caused by the branch protrusion 63. After passing heat through the latent heat exchanger 53, the heat is transferred upward along the upper plate 64 and discharged to the exhaust port 57.

Looking at the circulation of the heating water using the heat transfer process, the heating and cooling water is heated in the first latent heat exchanger 52 or the second latent heat exchanger (53) through the heating water inlet pipe 33 It is introduced into an arbitrary heat exchange pipe and absorbs heat of exhaust gas while sequentially moving each heat exchange pipe.

The heating water absorbed heat through the above process is discharged from any heat exchange pipe of the first latent heat exchanger 52 or the second latent heat exchanger 53 and flows into the connection pipe 44.

The heating water passing through the connecting pipe 44 flows into the sensible heat exchanger 43 surrounding the combustion chamber 42 to directly receive the combustion heat, and then discharged to the heating water discharge pipe 35 to heat the area to be heated. After heating, the water is introduced into the heating water inflow pipe 33 again.

That is, according to the present invention, the sensible heat exchanger 43 which absorbs the sensible heat of the combustion exhaust gas generated by the burner 32 is integrated with the combustion chamber 42, and the copper pipe is wound around the outer wall of the combustion chamber 42. It is configured to absorb heat.

The exhaust gas guiding member 61 integrated with the latent heat portion 51 is provided as a passage of the high temperature combustion gas, and the high temperature exhaust gas flows through the latent heat portion 51 to maximize the flow of the high temperature combustion gas. In order to heat exchange in the first, second latent heat exchanger (52, 53) consisting of a double structure, a multi-structure and a multi-array for the purpose of the heat exchange, the first and second heat exchange pipes are installed horizontally ( The exhaust gas passes through the third and fourth heat exchange pipes 73 and 74 and the seventh and eighth heat exchange pipes 77 and 78 after passing through the 71 and 72 and the fifth and sixth heat exchange pipes 75 and 76. It will reabsorb large amounts of latent heat of condensation.

This sequentially absorbs the latent heat of condensation of the high-temperature exhaust gas, thereby enabling a large amount of heat exchange.

The condensate generated at this time is received by the lower plate 62 of the exhaust gas guide member 61 and is discharged to the condensate discharge pipe 34 through the condensate outlet 56, and the temperature is cooled through a heat exchange process in the latent heat part 51. The exhaust exhaust gas is discharged to the flue part by an exhaust port 57 integrally formed with the latent heat part 51.

Therefore, as described above, the present invention has an advantage of adopting a Bunsen burner according to the structure of the upstream combustion method.

In addition, there is an effect of maximizing the flow of the exhaust gas through the exhaust gas guide member and maximizing the absorption of the latent heat of condensation contained in the exhaust gas through the first and second latent heat exchangers.

In addition, unlike the conventional condensing boiler, it is possible to reduce the production cost and lighten the product by using the lower plate of the exhaust gas guide member without separately installing the condensate receiver.

Similarly, unlike the conventional condensing boiler, it is possible to reduce the size of the product as much as possible by installing in the latent heat unit without installing a passage for discharging exhaust gas separately.

Claims (7)

A burner section 31 in which burner 32 burns to generate heat; A sensible heat unit 41 formed on the burner unit 31 and having a sensible heat exchanger 43 for directly exchanging heat generated by the burner 32; In the heat exchanger of the condensing boiler formed on the sensible heat portion 41, the latent heat portion 51 to absorb the heat of the exhaust gas is stacked and integrally formed in the same area in the vertical direction, The latent heat part 51 may include first and second latent heat part heat exchangers 52 and 53 formed to be symmetrical with respect to a center to absorb heat of exhaust gas; An exhaust gas guide member 61 which guides the exhaust gas and collects condensed water while fixing the first and second latent heat exchangers 52 and 53; A condensate discharge port 56 for discharging the condensed water falling on the exhaust gas guide member 61 to the condensate discharge pipe 34; The heat exchanger of the upstream condensing boiler for heating and hot water, characterized in that formed in the upper end of the latent heat portion 51 is composed of an exhaust port for discharging the exhaust gas to the outside. The first, second, third and fourth heat exchange pipes 71, 72, 73, and 74 of the first latent heat exchanger 52 and the second latent heat exchanger 53. The fifth, sixth, seventh, and eighth heat exchange pipes (75, 76, 77, 78) forming a) is a two-stage multi-structure and multi-arranged horizontally absorbing heat, characterized in that the upward for heating and hot water Heat exchanger in combustion condensing boiler. The method of claim 2, wherein the first, second, third, fourth, fifth, sixth, seventh, and eighth heat exchange pipes 71, 72, 73, 74, 75, 76, 77, 78 In order to prevent corrosion, the inside of the copper pipe (54) of the same material, the outside of the heat exchanger of the upstream condensing boiler for heating and hot water, characterized in that the laminated by rolling with aluminum pipe (55). The method of claim 2, wherein the first, second, third, fourth, fifth, sixth, seventh, and eighth heat exchange pipes 71, 72, 73, 74, 75, 76, 77, 78. The heat exchanger of the upstream condensing boiler for heating and hot water, characterized in that any one is connected to the heating water inlet pipe (33), the other is connected to the connector (44). The method of claim 1, wherein the exhaust gas guide member 61 guides the exhaust gas and the condensed water while fixing one side portion of the first and second latent heat exchangers 52 and 53. A lower plate 62 formed at each lower portion of the latent heat exchanger 52 and 53 to collect the condensed water falling while guiding the exhaust gas to the center and to send it to the condensed water outlet 56; A branching projection 63 is formed at the center by the lower plate 62 so as to branch the exhaust gas moving upwardly to the center, and the exhaust gas branched to both sides by the branching projection 63 is formed in the first and the second. 2 consists of an upper plate 64 which passes through the latent heat exchanger 52 and 53 and moves downward while performing heat exchange, and then moves upward through the outer flow path 58 to be discharged to the exhaust port 57. Heat exchanger of upstream condensing boiler for heating and hot water, characterized in that. The method of claim 1, wherein the first and second latent heat exchanger (52, 53) and the exhaust gas guide member 61 is a heating and characterized in that to form a hollow portion or to insulate the insulation to prevent heat loss Heat exchanger of upstream condensing boiler for hot water. The heat exchanger of claim 1, wherein the sensible heat exchanger (43) is formed by rolling a pipe or an aluminum pipe of the same material.