JP2014035145A - Combustion device and drain chamber attached to the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow soot in a drain channel for condensate water in a combustion device to easily flow out with liquid such as the condensate water.SOLUTION: A water heater 100 has a condensate water drain part 50 for draining condensate water generated during heat exchange. The condensate water is sent to a neutralizer 60 through a drain channel 52 and a drain chamber 53 in the condensate water drain part 50 and then subjected to neutralization treatment. The drain chamber 53 is provided in a section of the drain channel 52 to constitute a part of the drain channel 52 and shaped to have a larger cross sectional area than the drain channel 52. In the water heater 100, the drain channel 52, the drain chamber 53, and the neutralizer 60 form a water sealing part 80 for reserving liquid in the drain channel 52 and the drain chamber 53. The drain chamber 53 is provided in a section having a water seal surface 81 in the water sealing part 80. Thus soot floating on the water seal surface and the liquid in the drain chamber 53 are agitated by a fluctuating pressure caused by combustion gas to easily get mixed up with the liquid.

Description

  The present invention relates to a combustion apparatus that does not clog soot or the like in a drainage channel that collects condensed water.

  Generally, the latent heat recovery water heater includes a neutralizer for neutralizing condensed water generated when heat is recovered from combustion gas. The combustion gas is exhausted from an exhaust port provided in the water heater. However, if the configuration of the conventional water heater is used, the combustion gas may be exhausted from the drain port of the neutralizer through a pipe that sends condensed water generated inside the water heater to the neutralizer.

  In order to solve such a problem, conventionally, the condensed water stays at a predetermined level or more and enters through the drainage channel into the drainage channel that guides the condensed water from the main body of the water heater to the inlet of the neutralizer. There has been proposed a water heater provided with a water seal structure that can block combustion gas (see, for example, Patent Document 1).

JP 2008-185296 A

  Generally, in a water heater, soot is generated by burning of a burner or the like. This soot moves with the flow of the combustion gas inside the water heater. A part of the soot may enter a drainage channel that leads condensed water from the water heater main body to the inflow port of the neutralizer. In the case of a water heater provided with the above water seal structure, the soot that has entered the drainage channel may disperse and flow out into the liquid containing the condensed water retained in the water seal structure, Sometimes it stuck to the road. When the number of such sticks that have been fixed for many years of use increases, there is a problem that the drainage channel is clogged and seriously affects the equipment.

  Then, an object of this invention is to provide the combustion apparatus which makes it easy to adjust the soot etc. which entered the drainage channel of the condensed water in a combustion apparatus to liquids, such as condensed water, and to make it discharge | emit outside apparatus.

  The present invention is for solving the above problems, and the combustion apparatus of the present invention includes a heat exchange means for exchanging heat with the combustion gas supplied from the combustion means for supplying the combustion gas through the combustion gas flow path, Liquid is stored in a drainage channel that drains the condensed water generated by the heat exchange, and sealing means for blocking exhaust of combustion gas from the drainage channel and a section of the drainage channel are formed to form the drainage channel. A drainage chamber having a shape having a cross-sectional area larger than the cross-sectional area of the drainage channel, and a sealed surface of the liquid stored in the drainage channel is positioned in the drainage chamber. The drainage chamber is provided in one section of the drainage channel. Further, in the combustion apparatus of the present invention, the drainage channel on the upstream side of the drainage chamber penetrates the upper surface of the drainage chamber, and the drainage is positioned so that the tip portion is located in front of the sealing surface in the drainage chamber. It is connected with the chamber. In the combustion apparatus of the present invention, the drainage chamber has a shape in which at least one section including the sealing surface has an outer circumference or a diameter larger than the outer circumference or the diameter of the drainage channel upstream of the drainage chamber. It is characterized by. Thereby, the effect | action of making the soot etc. which approached the drainage channel of the condensed water in a combustion apparatus easy to adjust to liquids, such as condensed water, is brought about.

  In the combustion apparatus of the present invention, the sealing means is a trap formed in the drainage chamber by providing a partition wall in the drainage chamber forming a part of the drainage channel. Further, the sealing means is a trap composed of a bent or curved passage formed by providing a partition wall in the drainage chamber, and the passage constituting the trap connected to the drainage channel on the upstream side of the drainage chamber. The cross-sectional area is larger than the cross-sectional area of the drainage channel on the upstream side of the drainage chamber. Further, the sealing means is a trap in which the drainage channel is bent or curved into a predetermined shape. The combustion apparatus of the present invention further comprises a neutralizer for neutralizing the condensed water and draining the condensed water neutralized from the neutralized water drainage channel, and the sealing means includes the drainage channel and the above The drainage chamber and the neutralizer are configured, and the drainage channel is connected to the neutralizer below the position of the neutralization water drainage channel, and is above the connection position with the drainage channel. The sealing surface is located at any position of the neutralizer. Thereby, this invention can be applied to the sealing structure of various aspects, and clogging can be eliminated.

  The drainage chamber of the present invention includes a heat exchange means for exchanging heat with the combustion gas supplied from the combustion means for supplying the combustion gas through the combustion gas flow path, and a drainage path for draining the condensed water generated by the heat exchange. And a liquid sealing means for blocking the exhaust of the combustion gas from the drainage channel, and attached to a section including the sealed surface of the stored liquid in the drainage channel of the combustion device. A drainage chamber forming one section, which has a shape having a cross-sectional area larger than the cross-sectional area of the drainage channel. The drainage chamber of the present invention is characterized in that at least one section including the sealing surface has an outer circumference or a diameter larger than the outer circumference or the diameter of the drainage channel upstream of the drainage chamber. Thereby, the effect | action of making the soot etc. which approached the drainage channel of the condensed water in a combustion apparatus easy to adjust to liquids, such as condensed water, is brought about.

  The drainage chamber of the present invention includes a heat exchange means for exchanging heat with the combustion gas supplied from the combustion means for supplying the combustion gas through the combustion gas flow path, and a drainage path for draining the condensed water generated by the heat exchange. A drainage chamber that is attached to a section of the drainage channel in the combustion apparatus and that forms a section of the drainage channel, and forms a passage for storing liquid therein by providing a partition wall therein, The cross-sectional area of the passage directly connected to the drainage channel upstream from the drainage chamber has a sealed structure that blocks exhaust of combustion gas from the drainage channel by the stored liquid. It is characterized by being larger than the area. Thereby, if it attaches to the combustion apparatus which does not have a sealing structure in the drainage path of condensed water, it brings about the effect | action that the sealing apparatus has the sealing structure which has the function to prevent clogging.

  ADVANTAGE OF THE INVENTION According to this invention, the outstanding effect that the soot etc. which entered into the drainage path of the condensed water in a combustion apparatus can be made easy to adapt to liquids, such as condensed water, can be show | played. As a result, the soot can be easily discharged outside without clogging the combustion apparatus.

It is a figure which shows the water heater 100 which is an example of embodiment of the combustion apparatus of this invention. It is a figure which shows the drainage chamber 53 vicinity of the water heater 100. FIG. It is a figure which shows an example of embodiment of the waste_water | drain chamber of this invention. It is a figure which shows the water heater 200 which is an example of another embodiment of the combustion apparatus of this invention. It is a figure which shows the water heater 300 which is an example of another embodiment of the combustion apparatus of this invention.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a view showing a water heater 100 as an example of an embodiment of a combustion apparatus of the present invention. The water heater 100 includes a water pipe 1, a combustion unit 10, a heat exchange unit 20, a combustion gas flow path 30, a latent heat recovery heat exchange unit 40, a condensed water drainage unit 50, a neutralizer 60, and an exhaust gas. The mouth 70 and the sealing part 80 are provided.

  The combustion unit 10 generates heat by combustion and supplies the heat to the heat exchange unit 20 as a combustion gas. Although it is assumed that the combustion part 10 is comprised with the burner which burns fuels, such as oil and gas, and a ventilation fan, for example, it is not restricted to this, Other things may be used.

  The heat exchanging unit 20 exchanges heat with the combustion gas supplied from the combustion unit 10, and mainly collects sensible heat from the combustion gas to give heat to a fluid such as water flowing in the heat exchanging unit 20. It is. As the configuration of the heat exchange unit 20, for example, a configuration including a plurality of (not shown) aligned heat exchange fins and a water pipe 1 through which a fluid such as water passes through the plurality of heat exchange fins is assumed. The configuration is not limited to the above, and other configurations may be used.

  The combustion gas flow path 30 is a flow path for combustion gas, and guides the combustion gas from the heat exchange unit 20 to the exhaust port 70 through the latent heat recovery heat exchange unit 40.

  The latent heat recovery heat exchange unit 40 mainly recovers latent heat in the combustion gas that has passed through the heat exchange unit 20 and applies heat to a fluid such as water flowing in the latent heat recovery heat exchange unit 40. That is, the latent heat recovery heat exchange unit 40 recovers latent heat in the combustion gas and sensible heat that cannot be recovered in the heat exchange unit 20. As a configuration of the latent heat recovery heat exchanging unit 40, for example, as shown in FIG. 1, a configuration in which a water pipe 1a to a water pipe 1h in which one section of the water pipe 1 is curved in a wavy line is arranged in parallel is used. Although assumed, it is not restricted to this, Other structures may be sufficient.

  In the water heater 100, water is supplied from the water conduit 1 on the latent heat recovery heat exchange unit 40 side. Then, the supplied water sequentially obtains heat in the latent heat recovery heat exchange unit 40 and the heat exchange unit 20 to become hot water, and is discharged from the water pipe 1 on the heat exchange unit 20 side.

  The condensed water drainage unit 50 drains condensed water generated during heat exchange in the latent heat recovery heat exchange unit 40 to the outside. For example, the condensed water recovery unit 51, the drainage channel 52, and the drainage chamber 53 are connected to each other. Prepare. The condensed water recovery unit 51 guides condensed water to the drainage channel 52. In FIG. 1, the condensate recovery unit 51 is configured in an aspect in which an inclination is provided on the bottom surface 31 of the combustion gas flow path 30 that is a falling surface of the condensate. However, the present invention is not limited to this and is in other aspects. May be. Condensed water is guided to the entrance of the drainage channel 52 along the inclination of the bottom surface 31.

  In the water heater 100 as an example of the embodiment of the present invention, the liquid is stored in the drainage channel 52 and the exhaust of the combustion gas from the drainage channel 52 is performed so that the combustion gas does not spout outside through the condensed water drainage unit 50. A sealed water portion 80 to be blocked is formed.

  In FIG. 1, the sealed water portion 80 is formed by a drainage channel 52 and a drainage chamber 53 and a neutralizer 60 that neutralizes condensed water. The drainage channel 52 is bent or curved and goes around the lower side of the neutralizer 60, and is connected to the neutralizer 60 on the lower surface of the neutralizer 60. A neutralized water outlet 61 for draining condensed water neutralized by the neutralizer 60 is provided above the side surface of the neutralizer 60. The sealed portion 80 formed by the drainage channel 52 and the drainage chamber 53 and the neutralizer 60 has an aspect similar to the S trap or the P trap as a whole. In the sealed water portion 80, the liquid is stored up to the height at which the neutralized treated water drain 61 is provided, and the position where the neutralized treated water drain 61 is provided becomes the sealed surface 81. In the present invention, the sealing surface 81 refers to the liquid surface when the sealing portion 80 stores the liquid to the maximum extent.

  Moreover, as an aspect of the neutralizer 60, an aspect in which the neutralized water drain 63 is provided on the upper surface 62 of the neutralizer 60 is also assumed, and such an embodiment is also included in the present invention. In this case, the sealing surface 81 is located in the vicinity of the uppermost portion 64 of the neutralized treated water drain 63. Regardless of the mode of the neutralizer 60, the sealing surface 81 is located at any position of the neutralizer 60 above the connection position with the drainage channel 52.

  Moreover, said aspect is an example as an aspect of the sealing part 80 comprised by the drainage channel 52 and the drainage chamber 53, and the neutralizer 60, Comprising: The drainage channel 52, the drainage chamber 53, and the neutralizer 60 are shown. And the sealing part 80 comprised by another aspect is also contained in this invention. Further, in the present invention, the sealing unit 80 is not limited to the configuration of the drainage channel 52 and the drainage chamber 53 and the neutralizer 60, and a sealed structure including only the drainage channel 52 and the drainage chamber 53 In addition, it includes a sealing structure composed of elements other than the drainage channel 52 and the drainage chamber 53 and all other sealing structures. As an example of the other aspect of the sealing part 80, the trap which bent or curved the drainage channel 52 in the predetermined shape (for example, S shape, U shape, P shape) is mentioned.

  In addition, a drain valve pipe 65 is provided in the drainage channel 52 in order to drain the water stored in the sealing portion 80 during maintenance of the water heater 100. Further, a drain valve pipe 66 is provided in the neutralizer 60 in order to drain water stored in the neutralizer 60 during maintenance of the water heater 100.

  The drainage chamber 53 has a shape having a cross-sectional area larger than the cross-sectional area of the drainage channel 52. The drainage chamber 53 forms a section of the drainage channel 52 and forms a part of the drainage channel 52. Further, the drainage chamber 53 is provided in one section of the drainage channel 52 so that the sealing surface 81 in the sealing unit 80 is located in itself. That is, the drainage chamber 53 is a mode in which the cross-sectional area of one section of the drainage channel 52 including the sealing surface 81 is larger than the cross-sectional area of the drainage channel 52.

  As an example of the shape of the drainage chamber 53, a tubular shape having a diameter larger than that of the drainage channel 52 or a cylindrical shape may be mentioned. In this case, it is assumed that the drainage channel 52 and the drainage chamber 53 are connected so that the axis of the pipe is the same. The shape of the drainage chamber 53 is an example, and is not limited to this, and may be other shapes. Further, the drainage channel 52 and the drainage chamber 53 are integrally formed, and various modes such as a case where the drainage channel 52 and the drainage chamber 53 are separate members are included in the present invention.

  FIG. 2 is a view showing the vicinity of the drainage chamber 53 of the water heater 100. The combustion gas is guided to the exhaust port 70 by the combustion gas passage 30, and at this time, the fluctuating pressure of the combustion gas is applied to the drainage passage 52. In addition, the soot present in the water heater 100 may enter the drainage channel 52 due to the flow of condensed water generated in the latent heat recovery heat exchange unit 40. When the soot becomes familiar with the liquid such as condensed water, the soot is dispersed in the liquid such as condensed water and flows into the neutralizer 60. However, when the soot enters the drainage channel 52 more and the sealing surface 81 exists in the middle of the drainage channel 52, the soot adheres firmly to the wall surface of the drainage channel 52 before it becomes familiar with the liquid such as condensed water, and it is laminated. There is a possibility that the drainage channel 52 will be clogged by dredging. Although the drainage chamber 53 is provided to avoid this, a mechanism for the drainage chamber 53 to solve the clogging of the drainage channel 52 will be described below with reference to FIG.

  In the sealing part 80, the liquid is stored to the maximum extent. And the sealing surface 81 is located in the drainage chamber 53, as shown to Fig.2 (a). In the present invention, the soot that enters the drainage channel 52 floats on the sealing surface 81 located in the drainage chamber 53. When the water heater 100 is in an operating state, the fluctuating pressure of the combustion gas is continuously applied to the drainage channel 52. The fluctuating pressure of the combustion gas applied to the drainage channel 52 causes the sealing surface 81 located in the drainage chamber 53 to move up and down to stir the soot and the condensed water. In particular, when the combustion section 10 starts combustion and stops combustion, a larger fluctuating pressure of combustion gas is applied to the drainage channel 52 than at other times. As a result, the fluctuating pressure of the combustion gas at the start and end of combustion of the combustor 10 causes the sealing surface 81 to vigorously move up and down to stir the soot and the condensed water vigorously. If the cocoon and condensed water are continuously stirred, the cocoon becomes familiar with liquids such as condensed water. As a result, it is possible to avoid a situation in which the soot adheres firmly to the wall surface of the drainage chamber 53 before it becomes familiar with and disperses the liquid such as condensed water. Note that 煤 A represents a state in which the liquid such as condensed water has been dispersed and dispersed in the liquid, 煤 B represents a state in which the liquid has not been adapted to the liquid such as condensed water, and other moths are also represented accordingly. ing.

  Even in a mode of only the drainage channel 52 without the drainage chamber 53, a state in which the fluctuating pressure of the combustion gas is continuously applied to the sealing surface 81 in the drainage channel 52 occurs, and the sealing surface 81 moves up and down to stir the soot and the condensed water. However, in the case of only the drainage channel 52 in which the drainage chamber 53 is not provided, since the cross-sectional area is small, it is difficult to cause sufficient agitation to adjust the soot to a liquid such as condensed water. For this reason, it has occurred that the soot adheres firmly to the wall surface of the drainage channel 52 before it becomes familiar with the liquid such as condensed water. On the other hand, in the case where the drainage chamber 53 is provided, it is possible to ensure a sufficient cross-sectional area to cause the stirring so that the soot becomes familiar with the liquid such as condensed water. Further, the stirring of the soot and the condensed water in the drainage chamber 53 is more intense than the stirring of the embodiment of the drainage channel 52 without the drainage chamber 53. This will be described below.

  As shown in FIG. 2A, since the cross-sectional area of the drainage chamber 53 is larger than the cross-sectional area of the drainage channel 52, the drainage chamber 53 has a region 53 a that protrudes laterally from the outer peripheral surface of the drainage channel 52. Since the region 53a is closed by the upper surface 53b, the variation of the combustion gas pressure is larger in the region 53a than in the central region 53c corresponding to the drainage channel 52. Therefore, in the region 53a, a violent turbulent flow is generated as compared with the central region 53c, thereby causing the sealed surface 81 in the region 53a to violently ripple. As a result, the sealing surface 81 as a whole also has a more up-and-down motion and a harsh wave, resulting in more intense stirring and soaking of condensed water than in the case of the drainage channel 52 without the drainage chamber 53. By vigorous stirring of the soot and the condensed water, the soot and the condensed water floating on the sealing surface 81 are more easily adapted.

  In addition, as shown in FIG. 2B, the drainage channel 52 a located on the upstream side of the drainage chamber 53 penetrates the upper surface of the drainage chamber 53, and the tip of the drainage channel 52 a is located in front of the sealing surface 81. If the drainage channel 52a and the drainage chamber 53 are connected in the aspect, it contributes to the stirring of the sealing surface 81. In FIG. 2A, both ends are connected in such a manner that the tip of the drainage channel 52 a is located on the upper surface of the drainage chamber 53. 2A, the pressure of the combustion gas is applied to the entire drainage chamber 53 through the drainage channel 52a, and the pressure of the combustion gas is dispersed throughout the drainage chamber 53. On the other hand, in the case of the mode of FIG. 2B, the distance h between the tip of the drainage channel 52a and the sealing surface 81 is smaller than that in the mode of FIG. A combustion gas pressure stronger than that in other regions is applied in the vicinity of the central region 53c. As a result, the sealed surface 81 is vibrated violently, which contributes to intense stirring of the soot and condensed water. The distance h between the front end of the drainage channel 52a and the sealing surface 81 in the case of FIG. 2B is an appropriate distance that contributes to causing intense stirring of the soot and condensed water as described above. If it is, it will not specifically limit.

  In order to avoid a situation where the drainage channel 52 is clogged by dredging, it is possible to simply increase the cross-sectional area of the drainage channel 52, but considering the device size, the cross-sectional area of the drainage channel 52 cannot be increased too much. Further, if only the drainage channel 52 is provided, it is not possible to create a region 53a that is likely to cause intense internal agitation due to a difference in cross-sectional area as in the case where the drainage chamber 53 is provided. Further, as shown in FIG. 2, since the cross-sectional area of the drainage channel 52 is smaller than the drainage chamber 53, the fluid velocity passing through the drainage channel 52 is larger than in the case of only the drainage channel 52 without the drainage chamber 53. Become. For this reason, the soot adhering to the inner wall surface of the drainage channel 52 can be efficiently guided to the drainage chamber 53. As described above, when the drainage chamber 53 is provided so that the sealing surface 81 is positioned in the drainage chamber 53, an effect that cannot be obtained simply by increasing the cross-sectional area of the drainage channel 52 is obtained.

  From the above, the cross-sectional area of the drainage chamber 53 is made larger than the cross-sectional area of the drainage channel 52. For this reason, at least of the cross-sectional area of the drainage channel 52, the cross-sectional area of the drainage channel 52a located on the upstream side of the drainage chamber 53 is particularly important. That is, the cross-sectional area of the drainage channel 52b located on the downstream side of the drainage chamber 53 is not important. Therefore, the effects described above can be obtained if at least the cross-sectional area of the drainage chamber 53 is made larger than the cross-sectional area of the drainage channel 52a.

  Thereby, since the drainage chamber 53 has a cross-sectional area larger than the cross-sectional area of the drainage channel 52, possibility that clogging will occur can be reduced. Further, since the drainage chamber 53 can easily generate vigorous internal stirring, the soot and the condensed water can be sufficiently stirred, and as a result, the soot can be easily adapted to the condensed water.

  In addition, this inventor verified what was demonstrated above using FIG. 2 (a) and FIG.2 (b) in the 46.5kW oil hot water heater for one specific household. In this oil water heater, a tubular drain pipe is used as the drainage channel 52a, a tubular or cylindrical member having a larger cross-sectional area than the drainage channel 52a is used as the drainage chamber 53, and both have the same axis. Connected in a manner. A drainage pipe having a diameter W1 (corresponding to the width of the central region 53c) of 15 mm was used as the drainage channel 52a. Considering the size, layout, etc. of each part of the oil water heater, 17.5 mm to 27.5 mm was appropriate as the width W2 of the region 53a. Therefore, the diameter at which the width W2 of the region 53a becomes 22.5 mm is 60 mm. A drainage chamber 53 (22.5 mm + 15 mm + 22.5 mm) was provided in the petroleum water heater. Further, in the verification of the above description using FIG. 2B, the distance h between the tip of the drainage channel 52a and the sealing surface 81 is the case where the drainage channel 52a and the drainage chamber 53 are set to the above-mentioned size. 50 mm to 60 mm is considered desirable, and is set to 55 mm. However, the above numerical values and the modes of the drainage channel 52a and the drainage chamber 53 are merely examples. The optimum values shown above vary depending on various factors such as the oil heater capacity (burner fan capacity and combustion amount), exhaust resistance (resistance when exhaust gas passes through the exhaust port), and component layout. It is necessary to determine by test for each type of oil water heater.

  FIG. 3 is a diagram showing an example of the embodiment of the drainage chamber of the present invention. FIG. 3A is a perspective view showing the drainage chamber 53. As described with reference to FIG. 1, the drainage chamber 53 is a tubular or cylindrical member having a diameter B larger than the diameter A of the drainage channel 52. That is, the horizontal sectional area of the drainage chamber 53 is larger than the horizontal sectional area of the drainage channel 52. Moreover, the connection mode of the drainage channel 52 and the drainage chamber 53 is not limited to a mode in which the axis of the pipe is connected to be the same as shown in FIG. Good. As a connection mode between the drainage channel 52 and the drainage chamber 53, for example, as shown in the dotted line display of FIG. 3A, the drainage channel 52 a located on the upstream side of the drainage chamber 53 has an axial position on the upper surface of the drainage chamber 53. For example, the drainage channel 52b positioned on the downstream side of the drainage chamber 53 is shifted in the predetermined direction and connected to the lower surface of the drainage chamber 53 while being shifted from the axial position in the opposite direction to the predetermined direction. Moreover, the aspect which connected the drainage channel 52a and the drainage channel 52b in the various positions of the drainage chamber 53 other than the above is also contained in this invention. The region 53a described in FIG. 2 is a region surrounded by the upper surface 53b of the drain chamber 53, the sealing surface 81, and the side surface 53c of the drain chamber 53.

  FIG. 3B is a view showing the drain chamber 54. The drain chamber 54 has a truncated cone shape. As apparent from FIG. 3B, the horizontal sectional area of the drainage chamber 54 is larger than the horizontal sectional area of the drainage channel 52 except for the connecting surface 54 a between the drainage channel 52 and the drainage chamber 54. Moreover, the connection mode of the drainage channel 52 and the drainage chamber 54 is not limited to a mode in which the axis of the pipe is connected to be the same as shown in FIG. Good. Other connection modes can also be described in the case of the drainage chamber 54 following the description in FIG. FIG. 3C shows the drain chamber 55. The drainage chamber 55 has a spherical shape having a diameter D larger than the diameter C of the drainage channel 52. In other words, the horizontal sectional area of the drain chamber 55 is larger than the horizontal sectional area of the drain channel 52. Moreover, the connection mode of the drainage channel 52 and the drainage chamber 55 is not limited to a mode in which the axis of the pipe is connected to be the same as shown in FIG. Good. Other connection modes can be described in the case of the drainage chamber 55 following the description in FIG. FIG. 3D is a diagram showing the drainage chamber 56. The drainage chamber 56 has a rectangular parallelepiped shape with a larger cross-sectional area (or outer periphery) than the drainage channel 52. Moreover, the connection mode of the drainage channel 52 and the drainage chamber 56 is not limited to a mode in which the axis of the pipe is connected to be the same as shown in FIG. Good. Other connection modes can also be described in the case of the drainage chamber 54 following the description in FIG.

  As described above, various forms of the drainage chamber of the present invention are assumed, but the mode of the drainage chamber shown in FIGS. 3A to 3D is an example. A drainage chamber which is provided in a section of the drainage channel 52 and forms a part of the drainage channel 52 and has a horizontal cross-sectional area (or outer periphery) larger than the horizontal sectional area (or outer periphery) of the drainage channel 52 is All are included in the present invention. The horizontal cross-sectional area of the drainage chamber does not necessarily have to be larger than the horizontal cross-sectional area (or outer periphery) of the drainage channel 52 in all sections of the drainage chamber. Even if the cross-sectional area (or outer periphery) is the same as the horizontal cross-sectional area (or outer periphery) of the drainage channel 52 or smaller than the horizontal cross-sectional area (or outer periphery), such a thing is also larger than the cross-sectional area of the drainage channel 52. A drainage chamber having a shape having a large cross-sectional area is included in the present invention. However, even in such a case, the cross-sectional area of the portion where the sealing surface 81 is located needs to be larger than the horizontal cross-sectional area (or outer periphery) of the drainage channel 52.

  Moreover, the drainage channel 52 and each drainage chamber may be integrally molded, or the drainage chamber 53 to the drainage chamber 56 may be attached to the drainage channel 52 as separate members. If the drainage channel 52 and the drainage chamber 53 to the drainage chamber 56 are separate members, the present invention can be applied by attaching the drainage chamber 53 to the drainage chamber 56 later to a conventional water heater.

  FIG. 4 is a view showing a water heater 200 which is an example of another embodiment of the combustion apparatus of the present invention. The water heater 200 includes a combustion section 210, a heat exchange section 220, a combustion gas flow path 230, a latent heat recovery heat exchange section 240, a condensed water drain section 250, a neutralizer 260, an exhaust port 270, a seal A water unit 280.

  Combustion section 210, heat exchange section 220, combustion gas flow path 230, latent heat recovery heat exchange section 240, condensate drainage section 250, neutralizer 260, and exhaust port 270 in hot water heater 200 are respectively The same function as the combustion unit 10, the heat exchange unit 20, the combustion gas flow path 30, the latent heat recovery heat exchange unit 40, the condensed water drainage unit 50, the neutralizer 60, and the exhaust port 70 in the water heater 100. Since it is a role and has already been described with reference to FIGS.

  The difference between the water heater 200 and the water heater 100 is the structure in the sealed portion. The sealed water portion 80 in the water heater 100 is configured by the drainage channel 52, the drainage chamber 53, and the neutralizer 60, whereas the sealed water portion 280 in the water heater 200 is configured by the drainage channel 252 and the drainage chamber 253. Has been. For example, as shown in FIG. 4, the sealing portion 280 is formed as an S trap in which the drainage channel 252 is bent or curved to form an S shape, a P trap in which a P shape is formed, or these However, the structure is not limited to this, and other structures may be used. And in the area where the sealing surface is located, one drainage chamber 253 is always provided.

  The water heater 200 is different from the water heater 100 only in the sealing structure, and the description of FIGS. 1 to 3 can be applied to the drainage chamber 253 important in the present invention. Thereby, possibility that clogging will occur in the drainage channel 252 can be reduced. That is, the drainage chamber 253 can easily generate vigorous internal agitation, so that the soot and the condensed water can be sufficiently agitated. As a result, the soot can be easily adapted to the condensed water and discharged to the outside. .

  FIG. 5 is a view showing a water heater 300 which is an example of another embodiment of the combustion apparatus of the present invention. The water heater 300 includes a combustion section 310, a heat exchange section 320, a combustion gas flow path 330, a latent heat recovery heat exchange section 340, a condensed water drainage section 350, a neutralizer 360, an exhaust port 370, a seal A water unit 380.

  Combustion section 310, heat exchange section 320, combustion gas flow path 330, latent heat recovery heat exchange section 340, condensate drainage section 350, neutralizer 360, and exhaust port 370 in hot water heater 300 are respectively The same function as the combustion unit 10, the heat exchange unit 20, the combustion gas flow path 30, the latent heat recovery heat exchange unit 40, the condensed water drainage unit 50, the neutralizer 60, and the exhaust port 70 in the water heater 100. Since it is a role and has already been described with reference to FIGS.

  The difference between the water heater 300 and the water heater 100 is the structure in the sealed portion. The water seal unit 80 in the water heater 100 is configured to store liquid in the drainage channel 52 and block exhaust of combustion gas from the drainage channel 52, and includes the drainage channel 52, the drainage chamber 53, and the neutralizer 60. It was. On the other hand, the sealing part 380 in the water heater 300 is configured to store liquid in the drainage chamber 353 forming a part of the drainage channel 352 and block exhaust of combustion gas from the drainage channel 352. The trap is formed in the drainage chamber 353 by providing a partition wall 353 a in the chamber 353. In the sealed water portion 380, liquid is stored in the drainage chamber 353, but since the drainage chamber 353 also forms part of the drainage channel 352, the sealed water portion 380 also includes the drainage channel 352. It can be understood that the liquid is stored and the exhaust of the combustion gas from the drainage channel 352 is blocked.

  The partition wall 353 a in the drain chamber 353 forms a bent or curved passage in the drain chamber 353. And the exit 353b of the channel | path is provided in the drain chamber 353 side surface. In FIG. 5, the partition wall 353a rises downward from the upper surface 353c of the drainage chamber 353 in the drainage chamber 353, and divides the interior of the drainage chamber 353 into two spaces. However, the tip 353d of the partition wall 353a and the bottom surface 353e of the drain chamber 353 are not closed, and the two spaces separated by the partition wall 353a are connected only at the lower side. As a result, a U-shaped passage is formed in the drainage chamber 353 as a bent or curved passage. And it connects with the downstream drainage channel 352b in the exit 353b provided in the drainage chamber 353 side surface. Thereby, the trap which uses the surface of the exit 353b as the sealing surface 381 is formed.

  However, among the passages formed in the drainage chamber 353, at least the cross-sectional area of the passage 353f directly connected to the drainage channel 352a upstream of the drainage chamber 353 needs to be larger than the cross-sectional area of the drainage channel 352a. . Further, the sealing surface 381 is positioned in the passage 353f. In FIG. 5, the passage 353 f indicates a passage located on the left side of the partition wall 353 a in the drain chamber 353. Considering this, the size of the cross-sectional area of the drainage chamber 353 and the position of the partition wall 353a in the drainage chamber 353 are determined.

  The bent or curved passage in the drain chamber 353 is not limited to the above, and may be a passage having another shape that functions as a trap. That is, in the above, the trap is formed in the drainage chamber 353 by the partition wall 353a and the outlet 353b. However, the trap is formed in the drainage chamber 353 by adding a partition wall and providing an outlet at another position. Also good. For example, in an order from the left side, a partition wall that rises downward from the upper surface 353c, a partition wall that rises upward from the bottom surface 353e, and an outlet in the vicinity of the right end of the bottom surface 353e are given as an example. Even in this case, the cross-sectional area of the passage directly connected to the drainage channel 352a on the upstream side of the drainage chamber 353 needs to be larger than the cross-sectional area of the drainage channel 352a. Further, if the sealing surface that directly receives the pressure of the combustion gas is positioned in a passage directly connected to the drainage channel 352a on the upstream side of the drainage chamber 353, the sealing surface can be efficiently moved up and down.

  Moreover, the difference between the water heater 300 and the water heater 200 is the manner of incorporation into the sealed water portion of the drainage chamber. That is, the sealed water portion 280 is a mode in which the drainage channel 252 is bent or curved to form a trap, and the drainage chamber 253 is disposed in the vicinity of the sealed surface 281. On the other hand, the sealing part 380 is provided with a partition wall 353a and an outlet 353b in the drainage chamber 353, thereby forming a trap substantially similar to a trap formed by bending or curving the drainage channel 252. It is an aspect. That is, in the water heater 300, a trap structure is formed in the drain chamber 353.

  On the other hand, the water heater 300 and the water heater 200 can be regarded as having substantially the same structure of the sealed portion as a whole. It can be understood that the left half portion constituted by the drainage channel 252 and the drainage chamber 253 of the sealed water portion 280 shown in FIG. 4 corresponds to the left portion of the partition wall 353 of the sealed water portion 380 shown in FIG. it can. Moreover, it can be grasped | ascertained that the part of the right half comprised by the curved drainage channel 252 of the sealing part 280 shown in FIG. 4 respond | corresponds to the part of the right side rather than the partition wall 353 of the sealing part 380 shown in FIG. .

  The trap in the description of the sealing portion 380 may be any of an S trap formed with an S shape, a P trap formed with a P shape, or a similar trap structure. It is not limited.

  With respect to the portion of the drainage chamber 353 that is important in the present invention in the water heater 300, what has been described with reference to FIGS. Thereby, possibility that clogging will occur in the drainage channel 352 can be reduced. That is, the drainage chamber 353 can easily generate sufficient agitation so that the soot fits into the condensed water, and as a result, the soot fits into the condensed water and is easily discharged to the outside. In addition, since a trap is formed in the drainage chamber 353, if the condensate drainage channel is attached to a combustion device that does not have a sealing structure, the combustion device should have a sealing structure that has a function of preventing clogging. There is also an effect that it is.

  In the embodiment of the present invention, it is assumed that the sealing portion is a drain trap such as an S-shape, a U-shape, a P-shape, or a similar shape. Is an example, and the case where the drainage chamber is applied to other sealed structures is also included in the scope of the present invention. Moreover, in embodiment of this invention, although the drainage chamber is provided only in one place, it is not restricted to this, You may provide in multiple places in the arbitrary areas of a drainage channel. Even in this case, the sealing surface must be positioned in any one of the plurality of drain chambers. The combustion apparatus of the present invention is not limited to a hot water heater, but includes other combustion apparatuses.

  The embodiment of the present invention shows an example for embodying the present invention, and the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. .

1, 201, 301 Water pipe 10, 210, 310 Combustion section 20, 220, 320 Heat exchange section 30, 230, 330 Combustion gas flow path 40, 240, 340 Latent heat recovery heat exchange section 50, 250, 350 Condensate drainage section 51 Condensate water recovery unit 52, 252, 352 Drainage channel 53, 54, 55, 56, 253, 353 Drainage chamber 60, 260, 360 Neutralizer 61 Neutralized water drainage port 70, 270, 370 Exhaust port 80, 280 380 Sealed part 81, 281 and 381 Sealed surface 100, 200, 300 Water heater

Claims (10)

A heat exchange means for exchanging heat with the combustion gas supplied from the combustion means for supplying the combustion gas through the combustion gas flow path;
A sealing means for storing liquid in a drainage channel for draining the condensed water generated by the heat exchange and blocking exhaust of combustion gas from the drainage channel;
Forming a section of the drainage channel to form part of the drainage channel, and having a drainage chamber having a shape having a cross-sectional area larger than the cross-sectional area of the drainage channel,
The combustion apparatus, wherein the drainage chamber is provided in a section of the drainage channel so that a sealed surface of the liquid stored in the drainage channel is located in the drainage chamber.   The drainage channel on the upstream side of the drainage chamber is connected to the drainage chamber so as to pass through the upper surface of the drainage chamber and to have its front end positioned in front of the sealing surface in the drainage chamber. The combustion apparatus according to claim 1.   The drainage chamber has a shape in which at least one section including the sealing surface has an outer periphery or a diameter larger than the outer periphery or the diameter of the drainage channel on the upstream side of the drainage chamber. Combustion equipment.   The combustion apparatus according to claim 1, wherein the sealing means is a trap formed in the drainage chamber by providing a partition wall in the drainage chamber forming a part of the drainage channel. The sealing means is a trap composed of a bent or curved passage formed by providing a partition wall in the drainage chamber,
The combustion according to claim 4, wherein a cross-sectional area of a passage constituting the trap connected to a drainage channel upstream of the drainage chamber is larger than a cross-sectional area of a drainage channel upstream of the drainage chamber. apparatus.   The combustion apparatus according to claim 1, wherein the sealing means is a trap in which the drainage channel is bent or curved into a predetermined shape. Further equipped with a neutralizer for neutralizing the condensed water and draining the condensed water neutralized from the neutralized water drainage channel,
The sealing means comprises the drainage channel, the drainage chamber, and the neutralizer,
The drainage channel is connected to the neutralizer below the position of the neutralization water drainage channel,
2. The combustion apparatus according to claim 1, wherein a sealing surface is positioned at any position of the neutralizer above a connection position with the drainage channel. A heat exchange means for exchanging heat with the combustion gas supplied from the combustion means for supplying the combustion gas through the combustion gas flow path;
The liquid stored in the drainage channel of the combustion apparatus comprising: a sealing means for storing liquid in a drainage channel for draining the condensed water generated by the heat exchange and blocking exhaust of combustion gas from the drainage channel. A drainage chamber which is attached to a section including a sealed water surface and forms one section of the drainage channel,
A drainage chamber having a shape having a cross-sectional area larger than that of the drainage channel.   The drainage chamber according to claim 8, wherein at least one section including the sealing surface has a shape that is larger in outer circumference or diameter than the outer circumference or diameter of the drainage channel upstream of the drainage chamber. A heat exchange means for exchanging heat with the combustion gas supplied from the combustion means for supplying the combustion gas through the combustion gas flow path;
A drainage chamber that is attached to a section of the drainage path in a combustion apparatus comprising a drainage path that drains the condensed water generated by the heat exchange, and forms a section of the drainage path;
A partition wall is provided in the interior to form a passage for storing liquid therein, and the stored liquid has a sealed structure that blocks exhaust of combustion gas from the drainage channel, and is upstream of the drainage chamber. The drainage chamber, wherein a cross-sectional area of the passage directly connected to the drainage channel is larger than a cross-sectional area of the upstream drainage channel.

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