CN107588536B - Horizontal water heater - Google Patents
Horizontal water heater Download PDFInfo
- Publication number
- CN107588536B CN107588536B CN201710552186.5A CN201710552186A CN107588536B CN 107588536 B CN107588536 B CN 107588536B CN 201710552186 A CN201710552186 A CN 201710552186A CN 107588536 B CN107588536 B CN 107588536B
- Authority
- CN
- China
- Prior art keywords
- water heater
- heat exchanger
- horizontal water
- combustion
- horizontal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention provides a horizontal water heater with high degree of freedom. In this horizontal water heater, the combustion vessel, the heat exchanger, and the exhaust hood are housed in a horizontally connected state in a casing having a shape of a bottom surface and a top surface, and a plurality of leg portions for supporting the horizontal water heater are provided so as to protrude from the bottom surface and the top surface. The height of the plurality of leg portions is set so that, when the horizontal water heater is installed with the bottom surface or the top surface facing downward, the horizontal water heater is inclined so that the condensed water in the combustion exhaust gas generated in the heat exchanger flows toward the exhaust hood, and is supported in this state. In this way, the horizontal water heater can be installed in any downward-facing mode. In addition, in either case, the condensate in the combustion exhaust gas generated in the heat exchanger flows toward the exhaust hood, and therefore the heat exchanger is not damaged. As a result, it is not necessary to look down on which surface, and the degree of freedom of installation can be improved.
Description
Technical Field
The present invention relates to a horizontal water heater in which a combustion container in which a burner is housed, a heat exchanger, and an exhaust hood provided with an exhaust port are housed in a housing in a state of being connected in a horizontal direction.
Background
A water heater is widely used which generates high-temperature combustion exhaust gas by combusting fuel gas with a burner and generates hot water by exchanging heat between the combustion exhaust gas and water with a heat exchanger. In general, in this water heater, a heat exchanger is disposed above a combustion container for housing a burner, an exhaust port is formed above the heat exchanger, and combustion exhaust gas generated by the burner flows upward, whereby the combustion exhaust gas is discharged from the exhaust port.
In addition, due to the requirement of installation space and the like, such a water heater (hereinafter, referred to as a horizontal water heater) has also been proposed: a combustion container including a burner is horizontally laid, a heat exchanger is disposed on a side of the combustion container, an exhaust port is provided on a side of the heat exchanger, and combustion exhaust gas is caused to flow in a horizontal direction (patent document 1). In addition, a horizontal water heater is referred to as a vertical water heater in which a heat exchanger is disposed above a combustion chamber and combustion exhaust gas flows upward (downward in some cases).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2003-185126
Disclosure of Invention
Problems to be solved by the invention
However, the horizontal water heater has a problem that the degree of freedom of installation is lower than that of the vertical water heater. That is, since the combustion exhaust gas of the vertical water heater is discharged upward, for example, in the case where the discharge hole for discharging the combustion exhaust gas to the outside of the room is provided on the wall surface on the right side of the water heater or on the wall surface on the left side of the water heater, the discharge hole can be easily handled by the pipe of the exhaust gas passage. In contrast, since the combustion exhaust gas of the horizontal water heater is discharged from the side surface, the scale of the pipe of the exhaust gas passage becomes large when the discharge hole for discharging the combustion exhaust gas to the outside is provided in the wall surface on the opposite side to the side on which the combustion exhaust gas is discharged. Therefore, there is a problem that: the space for piping cannot be secured, the water heater cannot be installed, or the installation of the water heater becomes difficult.
The present invention has been made to solve the above problems in the prior art, and an object of the present invention is to provide a horizontal water heater having a high degree of freedom in installation.
Means for solving the problems
In order to solve the above problem, the water heater of the present invention employs the following configuration. That is to say that the first and second electrodes,
the horizontal water heater of the invention includes: a combustion container that houses a burner for burning fuel gas; a heat exchanger connected to the combustion container and generating hot water by passing combustion exhaust gas generated by the burner through the heat exchanger; and an exhaust hood provided with an exhaust port through which the combustion exhaust gas passing through the heat exchanger flows out, wherein the combustion container, the heat exchanger, and the exhaust hood are housed in a horizontally connected state in a casing,
the housing is shaped to have a bottom surface and a top surface,
a plurality of leg portions which are projected from the bottom surface and the top surface of the case and support the horizontal water heater when the horizontal water heater is installed with the bottom surface or the top surface facing downward,
the height of the plurality of leg portions is set so as to support the horizontal water heater in a state that: when the horizontal water heater is installed such that the bottom surface or the top surface faces downward, the horizontal water heater is inclined such that the condensed water in the combustion exhaust gas generated in the heat exchanger flows toward the hood.
In the horizontal water heater according to the present invention, the combustion vessel, the heat exchanger, and the exhaust hood are housed in a horizontally connected state in a casing having a bottom surface and a top surface, and a plurality of leg portions for supporting the horizontal water heater are provided so as to protrude from the bottom surface and the top surface, respectively. The heights of the plurality of leg portions are set so as to support the horizontal water heater in the following state: when the horizontal water heater is installed with the bottom surface or the top surface facing downward, the horizontal water heater is inclined so that the heat exchanger is lower than the combustion container, the exhaust hood is lower than the heat exchanger, and the condensed water in the combustion exhaust gas generated in the heat exchanger flows toward the exhaust hood.
In this way, since the leg portion is provided on either the bottom surface or the top surface, the horizontal water heater can be provided not only in the case where the bottom surface is directed downward but also in the case where the top surface is directed downward. In addition, when the horizontal water heater is installed so that the bottom surface faces downward or the top surface faces downward, the horizontal water heater is installed in a state in which the horizontal water heater is inclined so that the condensed water in the combustion exhaust gas generated in the heat exchanger flows to the exhaust hood. Therefore, the heat exchanger is not damaged by the condensed water accumulated in the heat exchanger. As a result, it is not necessary to face down either the bottom surface or the top surface, and therefore, the degree of freedom in installation of the horizontal water heater can be improved.
In the horizontal water heater according to the present invention, the housing may have a box-like shape having at least one pair of side surfaces facing each other, in addition to the bottom surface and the top surface. Further, the exhaust gas passage port through which the combustion exhaust gas to be discharged to the outside of the casing passes may be opened to one of the pair of side surfaces, or the fuel gas passage port through which the fuel gas passes, the water passage port through which the water to be supplied to the heat exchanger passes, and the hot water passage port through which the hot water generated by the heat exchanger passes may be opened to the other of the pair of side surfaces.
Since the combustion container, the heat exchanger, and the exhaust hood are housed in the casing in a state of being connected in the horizontal direction, if the exhaust gas passage port is opened to one of the pair of side surfaces facing each other and the fuel gas passage port, the water passage port, and the hot water passage port are opened to the other side surface, piping of the exhaust gas, the fuel gas, the water, and the hot water inside the horizontal water heater becomes easy. Further, since the horizontal water heater can be installed regardless of which of the bottom surface and the top surface is directed downward, it is possible to easily install the horizontal water heater with either the bottom surface or the top surface directed downward in accordance with the situation of the installation place of the horizontal water heater, and thus piping of exhaust gas, fuel gas, water, and hot water outside the horizontal water heater is facilitated.
In the horizontal water heater according to the present invention, the heat exchanger and the hood may be connected to each other at a connection portion between the heat exchanger and the hood so that an inner peripheral surface of the heat exchanger and an inner peripheral surface of the hood are in a positional relationship as follows. That is, when the horizontal water heater is installed, the heat exchanger and the exhaust hood may be connected to each other in a state where the inner peripheral bottom surface of the exhaust hood, into which the condensed water flows, is lower than the inner peripheral bottom surface of the heat exchanger, into which the condensed water flows.
Thus, the condition that the condensed water cannot flow from the heat exchanger to the exhaust hood due to the fact that the inner peripheral bottom surface of the exhaust hood is higher than the inner peripheral bottom surface of the heat exchanger under the influence of assembly errors of the heat exchanger and the exhaust hood can be avoided. In addition, since the inner peripheral bottom surface of the exhaust hood is lower than the inner peripheral bottom surface of the heat exchanger, a large amount of condensed water can be accumulated on the exhaust hood side in advance. Therefore, even if a large amount of condensed water is generated, the condensed water can be treated without overflowing to the heat exchanger side.
The water heater of the present invention can be understood by the following means. That is to say that the first and second electrodes,
the horizontal water heater of the invention includes: a combustion container that houses a burner for burning fuel gas; a heat exchanger connected to the combustion container and generating hot water by passing combustion exhaust gas generated by the burner through the heat exchanger; and an exhaust hood provided with an exhaust port through which the combustion exhaust gas passing through the heat exchanger flows out, wherein the combustion container, the heat exchanger, and the exhaust hood are housed in a horizontally connected state in a casing,
a plurality of leg portions protruding from the bottom surface of the housing and supporting the horizontal water heater when the horizontal water heater is installed,
the height of the plurality of leg portions is set so as to support the horizontal water heater in a state that: when the horizontal water heater is installed such that the bottom surface or the top surface faces downward, the horizontal water heater is inclined such that the condensed water in the combustion exhaust gas generated in the heat exchanger flows toward the hood.
In the horizontal water heater according to the present invention, the combustion vessel, the heat exchanger, and the exhaust hood are housed in the casing in a state of being connected in the horizontal direction, and a plurality of leg portions for supporting the horizontal water heater are provided to protrude from the bottom surface of the casing. The heights of the plurality of leg portions are set so as to support the horizontal water heater in the following state: when the horizontal water heater is installed, the horizontal water heater is inclined so that the heat exchanger is lower than the combustion container, the exhaust hood is lower than the heat exchanger, and the condensed water in the combustion exhaust gas generated in the heat exchanger flows toward the exhaust hood. Therefore, even if condensation occurs in the heat exchanger, the condensed water flows from the heat exchanger to the exhaust hood, and therefore there is no fear that the condensed water accumulates in the heat exchanger and damages the heat exchanger.
Drawings
Fig. 1 is an explanatory diagram showing a structure of a horizontal water heater 1 of the present embodiment.
Fig. 2 is a perspective view showing leg portions 13a and 13b projected from the top surface 10a and leg portions 14a and 14b projected from the bottom surface 10b of the horizontal water heater 1 of the present embodiment.
Fig. 3(a) is an explanatory view showing an internal state of the horizontal water heater 1 when the horizontal water heater 1 of the present embodiment is installed in a normal state; fig. 3(b) is an explanatory diagram showing the state of the inside of the horizontal water heater 1 when the horizontal water heater 1 of the present embodiment is installed in a upside-down state.
Fig. 4 is an enlarged cross-sectional view showing the shape of the connection portion between the heat exchanger 50 and the exhaust hood 60.
Fig. 5 is an explanatory diagram of a horizontal water heater 2 according to a modification.
Description of the reference numerals
1. 2, horizontal water heater; 10. a housing; 10a, a top surface; 10b, a bottom surface; 10c, 10d, side; 11. a front cover; 12e, an exhaust passage port; 12g, a fuel gas passage port; 12i, a water through port; 12o, a hot water through port; 13a, 13b, legs; 14a, 14b, legs; 20g, fuel gas piping; 20i, a water supply pipe; 20o, hot water outlet piping; 30. a combustion blower; 40. a combustion vessel; 50. a heat exchanger; 50u, inner peripheral bottom surface; 51. a flange; 52. a seal member; 60. an exhaust hood; 60d, a drain storage part; 60e, an exhaust port; 60u, inner peripheral bottom surface.
Detailed Description
Fig. 1 is an explanatory diagram showing a general structure of a horizontal water heater 1 of the present embodiment. Fig. 1 (a) shows an external appearance of a horizontal water heater 1 according to the present embodiment. As shown in the drawings, the horizontal water heater 1 of the present embodiment includes a box-shaped housing 10 having one side surface opened and a front cover 11 attached to close the opened portion of the housing 10, and the horizontal water heater 1 is substantially in the shape of a horizontally long rectangular parallelepiped. The housing 10 includes a top surface 10a, a bottom surface 10b, not shown, provided at a position facing the top surface 10a, and three side surfaces. One of the three side surfaces is provided at a position facing each other, and an exhaust port 60e described later protrudes through the side surface 10c on one side surface 10c of the pair of side surfaces facing each other. Further, on the other side surface 10d (not shown in fig. 1) opposed to the side surface 10c, a water supply pipe 20i, a hot water discharge pipe 20o, and a fuel gas pipe 20g, which will be described later, protrude so as to penetrate the side surface 10 d.
Fig. 1 (b) shows a general internal structure of the horizontal water heater 1 housed in the case 10. As shown in the drawing, the combustion blower 30, the combustion chamber 40, the heat exchanger 50, and the exhaust hood 60 are connected in this order in the horizontal direction and are housed in the casing 10. The combustion container 40 includes a burner, not shown, and generates high-temperature combustion exhaust gas by burning fuel gas with the burner. The fuel gas to be burned by the burner is supplied from the outside of the casing 10 to the combustion container 40 through the fuel gas pipe 20 g. Further, combustion air necessary for combustion is supplied from the combustion blower 30 to the combustion container 40. Combustion exhaust gas generated by combustion of the fuel gas and the combustion air in the combustion container 40 flows from the combustion container 40 into the heat exchanger 50.
A copper water pipe, not shown, is housed in the heat exchanger 50 in a meandering state, and a plurality of copper fins are attached to the water pipe. The casing of the heat exchanger 50 for housing the water passing tubes and the fins is also formed of a copper plate. A water supply pipe 20i is connected to one end side of the water passage pipe, and a hot water discharge pipe 20o is connected to the other end side of the water passage pipe. When the fuel gas and the combustion air are combusted in the combustion container 40 while water is supplied from the water supply pipe 20i, high-temperature combustion exhaust gas generated in the combustion container 40 flows into the heat exchanger 50, and heats water flowing through the water passage pipe. As a result, the water heated by the combustion exhaust gas is changed to hot water and flows out from the hot water outlet pipe 20 o. The combustion exhaust gas cooled by heating the water in the water passage flows into the exhaust hood 60 from the heat exchanger 50, and is discharged to the outside from an exhaust port 60e formed in the exhaust hood 60. As shown in fig. 1 (c), when the front cover 11 is removed from the housing 10, various components built in the horizontal water heater 1 can be maintained.
Fig. 2 is an explanatory diagram showing a detailed shape of the top surface 10a, the bottom surface 10b, and the two opposing side surfaces 10c, 10d of the horizontal water heater 1 according to the present embodiment. Fig. 2 (a) shows a standard installation state of the horizontal water heater 1 in which the top surface 10a of the housing 10 is directed upward. In the normal installation state, the exhaust port 60e protrudes from the right side of the horizontal water heater 1 when viewed from the front cover 11 side. In this state, the circular large exhaust passage opening 12e opens in the right side surface 10c when viewed from the front cover 11 side, and the exhaust port 60e protrudes from the exhaust passage opening 12 e.
Four legs 13a and 13b protrude from four corners of the top surface 10 a. However, the two legs 13b projecting to the right side (i.e., the side from which the exhaust port 60e projects) and the two legs 13a projecting to the left side are different in projection amount from the top surface 10a when viewed from the front cover 11 side, and the projection amount of the leg 13a on the left side is larger than that of the leg 13b on the right side.
Fig. 2 (b) shows an installation state of the horizontal water heater 1 in which the top surface 10a of the casing 10 is directed downward and the bottom surface 10b is directed upward. In this upside-down installation state, the water supply pipe 20i, the hot water outlet pipe 20o, and the fuel gas pipe 20g are connected from the right side of the horizontal water heater 1 as viewed from the front cover 11 side. In this state, in the upside down installation state, the water passage port 12i through which the water supply pipe 20i passes, the hot water passage port 12o through which the hot water outlet pipe 20o passes, and the fuel gas passage port 12g through which the fuel gas pipe 20g passes open on the right side surface 10d when viewed from the front cover 11 side. Hereinafter, the water supply pipe 20i, the hot water discharge pipe 20o, and the fuel gas pipe 20g may be collectively referred to as various pipes 20i, 20o, and 20 g.
Four leg portions 14a and 14b are also provided at four corners of the bottom surface 10b in a protruding manner. In the upside-down installation state, when viewed from the front cover 11 side, the amounts of projection of the two legs 14a projecting to the right side (i.e., the side to which the various pipes 20i, 20o, and 20g are connected) and the two legs 14b projecting to the left side from the bottom surface 10b are different, and the amount of projection of the right leg 14a is larger than the amount of projection of the left leg 14 b.
As described above, in the horizontal water heater 1 of the present embodiment, the legs 14a and 14b are projected not only at the four corners of the bottom surface 10b but also at the four corners of the top surface 10 a. Therefore, in addition to the standard installation state shown in fig. 2 (a), the installation can be performed in a upside-down state as shown in fig. 2 (b). As a result, the maintenance side (the side where the front cover 11 is provided) can be maintained as it is, and the side to which the various pipes 20i, 20o, and 20g are connected and the side from which the exhaust port 60e protrudes can be reversed. That is, in the standard installation state shown in fig. 2 (a), various pipes 20i, 20o, and 20g are connected to the left side and an exhaust port 60e protrudes to the right side when viewed from the front cover 11 side (maintenance side). In contrast, as shown in fig. 2 (b), in the upside-down installation state, various pipes 20i, 20o, and 20g can be connected to the right side, and an exhaust port 60e can protrude to the left side. Therefore, the standard installation state shown in fig. 2 (a) and the upside-down installation state shown in fig. 2 (b) can be selected according to the installation situation of the horizontal water heater 1, and thus the degree of freedom of installation can be greatly improved without impairing the maintainability of the horizontal water heater 1.
In addition, the four legs 13a and 13b protruding from the top surface 10a are set such that the amount of protrusion from the top surface 10a of the leg 13a on the side to which the various pipes 20i, 20o, and 20g are connected is greater than the amount of protrusion from the top surface 10a of the leg 13b on the side from which the exhaust port 60e protrudes (see fig. 2 (a)). Similarly, the four legs 14a and 14b protruding from the bottom surface 10b are set so that the amount of protrusion from the bottom surface 10b of the leg 14a on the side to which the various pipes 20i, 20o, and 20g are connected is larger than the amount of protrusion from the bottom surface 10b of the leg 14b on the side from which the exhaust port 60e protrudes (see fig. 2 (b)). Therefore, in both the normal installation state shown in fig. 2 (a) and the upside-down installation state shown in fig. 2 (b), the horizontal water heater 1 can be installed in a state in which the horizontal water heater 1 is inclined so that the side from which the exhaust port 60e protrudes is positioned at a low position. This can improve the durability of the horizontal water heater 1.
Fig. 3 is an explanatory diagram showing the reason why the durability of the horizontal water heater 1 can be improved by inclining the horizontal water heater 1 so that the side from which the exhaust port 60e protrudes is at a low position and installing the horizontal water heater 1 in this state. Fig. 3(a) shows the state of the inside of the horizontal water heater 1 when the horizontal water heater 1 is installed in a normal state. As described above with reference to fig. 1 (b), the combustion blower 30, the combustion container 40, the heat exchanger 50, and the exhaust hood 60 are horizontally connected in this order and housed inside the horizontal water heater 1. The combustion exhaust gas generated in the combustion chamber 40 is cooled by the heat exchanger 50 and discharged to the outside through the exhaust port 60e of the exhaust hood 60.
Here, the combustion exhaust gas contains water vapor generated by combustion of the fuel gas. Thus, by the combustion exhaust gas being cooled while passing through the heat exchanger 50, the water vapor in the combustion exhaust gas is condensed inside the heat exchanger 50 to generate condensed water. Further, the combustion exhaust gas also contains nitrogen oxides (although in a trace amount) generated by oxidation of nitrogen in the air during combustion. When the fuel gas contains a sulfur component, the fuel gas may contain sulfur oxide oxidized by combustion of the sulfur component. By dissolving these nitrogen oxides and sulfur oxides, the condensed water produced in the heat exchanger 50 becomes a weakly acidic liquid called drain water (japanese patent No. ドレン).
As described above, the water passage pipe provided in the heat exchanger 50, the fins attached to the water passage pipe, and the housing for housing the water passage pipe and the fins are all made of copper. Therefore, if drain water is accumulated in the heat exchanger 50, there is a possibility that the heat exchanger 50 is perforated. In the horizontal water heater 1, the combustion vessel 40, the heat exchanger 50, and the exhaust hood 60 are connected in the horizontal direction, and the heat exchanger 50 is in a horizontal state, so that drain water generated in the heat exchanger 50 is likely to accumulate on the lower surface side in the heat exchanger 50.
Therefore, in the horizontal water heater 1 of the present embodiment, as shown in fig. 3(a), when the horizontal water heater 1 is installed, the horizontal water heater 1 is installed in a state in which the side from which the exhaust port 60e protrudes is inclined so as to be at a low position. Even if the drain water generated in the heat exchanger 50 drops downward in the heat exchanger 50 and reaches the lower surface of the heat exchanger 50, the drain water can be discharged to the exhaust hood 60 because the lower surface thereof is inclined toward the exhaust hood 60. Therefore, the drain water does not accumulate in the heat exchanger 50, and therefore, the heat exchanger 50 is not perforated.
Further, from the viewpoint of not causing the drain water to accumulate in the heat exchanger 50, it is also effective to set the direction of the inclined horizontal water heater 1 to the opposite direction and to set the side where the exhaust port 60e protrudes to a high position, and in doing so, the drain water generated in the heat exchanger 50 flows into the combustion container 40. However, a plurality of precision components such as a burner, a spark plug, and a flame sensor are mounted in the combustion container 40, and if these components are affected by the drain, there is a possibility that a trouble may occur in the horizontal water heater 1. In contrast, the exhaust hood 60 has a simple structure, and is formed of a metal plate made of stainless steel from the viewpoint of heat resistance, and stainless steel is excellent in acid corrosion resistance, and therefore, even if drain water flows in, no problem occurs.
In the horizontal water heater 1 of the present embodiment, the leg portions 14a and 14b protruding from the bottom surface 10b are different in amount from each other, and the horizontal water heater 1 is inclined, so that the horizontal water heater 1 can be appropriately inclined so that the side where the exhaust port 60e protrudes is located at a low position by simply providing the horizontal water heater 1.
Although the horizontal water heater 1 is installed in the normal state (i.e., the state in which the bottom surface 10b faces downward) as described above, the same description is applied to the case in which the horizontal water heater 1 is installed in the state in which the horizontal water heater 1 is turned upside down (i.e., the state in which the top surface 10a faces downward). Fig. 3(b) shows the state of the inside of the horizontal water heater 1 when the horizontal water heater is installed upside down. Similarly, the leg portions 13a and 13b protruding from the top surface 10a are also provided in a state in which the side from which the exhaust port 60e protrudes is inclined so as to be lower when the horizontal water heater 1 is provided, because the amount of protrusion of the leg portion 13a on the opposite side from the top surface 10a is larger than the amount of protrusion of the leg portion 13b on the side of the exhaust port 60e from the top surface 10 a. Therefore, the drain water generated in the heat exchanger 50 can be discharged to the exhaust hood 60, and therefore, the heat exchanger 50 is not perforated by the drain water accumulated in the heat exchanger 50.
In addition, even when the horizontal water heater 1 is installed in a vertically inverted state (i.e., a state in which the top surface 10a is oriented downward), the horizontal water heater 1 is inclined by making the amounts of projection of the leg portions 13a and 13b projected from the top surface 10a different from each other, and therefore, the horizontal water heater 1 can be installed by appropriately inclining the horizontal water heater 1 so that the side where the exhaust port 60e is projected is located at a low position by only installing the horizontal water heater 1.
In the horizontal water heater 1 of the present embodiment, the drain water generated in the heat exchanger 50 flows into the exhaust hood 60. Therefore, the connection portion between the heat exchanger 50 and the exhaust hood 60 is preferably formed in a shape that does not interfere with the inflow of drain water. Fig. 4 (a) is an enlarged sectional view showing a connection portion (portions a and B in fig. 3) between the heat exchanger 50 and the exhaust hood 60. As shown in the drawing, the heat exchanger 50 and the exhaust hood 60 are connected by bolts, not shown, in a state where the heat exchanger 50 and the seal 52 are sandwiched by the flange 51 and the exhaust hood 60. The inner peripheral bottom surface 50u of the heat exchanger 50 through which the drain water flows and the inner peripheral bottom surface 60u of the exhaust hood 60 into which the drain water flows are substantially the same surface, and the seal 52 is attached so as not to protrude. Therefore, the drain water generated in the heat exchanger 50 can flow into the exhaust hood 60 without being blocked. Further, although the drain water flowing into the exhaust hood 60 is accumulated at the lower end portion of the exhaust hood 60, the exhaust hood 60 is formed of a material having excellent acid corrosion resistance as described above, and therefore, a problem such as a perforation due to corrosion does not occur. Further, the drain water can be evaporated over time.
As shown in fig. 4b, the distance between the opposing inner circumferential surfaces of the exhaust hood 60 (at least in the vertical direction) may be set larger than the distance between the opposing inner circumferential surfaces of the heat exchanger 50, and the inner circumferential bottom surface 60u of the exhaust hood 60 may be set lower by one step than the inner circumferential bottom surface 50u of the heat exchanger 50 when the exhaust hood 60 is assembled to the heat exchanger 50. Thus, it is possible to avoid the situation where the drain water cannot flow from the heat exchanger 50 to the exhaust hood 60 due to the inner peripheral bottom surface 60u of the exhaust hood 60 being higher than the inner peripheral bottom surface 50u of the heat exchanger 50 due to the influence of variations in assembly. In addition, since the amount of drain water that can be accumulated in the exhaust hood 60 also increases, even when a large amount of drain water is generated, it is possible to handle the drain water on the exhaust hood 60 side.
As illustrated in fig. 4 (c), a drain reservoir 60d may be provided on the inner bottom surface 60u of the exhaust hood 60. Further, as shown in fig. 3, since the horizontal water heater 1 can be installed upside down, the drain water reservoir 60d is also formed in advance on the surface of the exhaust hood 60 facing the inner peripheral bottom surface 60 u. Since the drain water can be stored in the drain water storage portion 60d in this way, even when a large amount of drain water is generated, the drain water can be reliably treated on the exhaust hood 60 side.
In the horizontal water heater 1 of the present embodiment, the leg portions 13a and 13b are provided on the top surface 10a, and the leg portions 14a and 14b are provided on the bottom surface 10b, but the leg portions 13a and 13b may not be provided on the top surface 10a, and the leg portions 14a and 14b may be provided on the bottom surface 10 b. Fig. 5 shows an example of the horizontal water heater 2 according to such a modification. Fig. 5 (a) is a perspective view showing an external shape of a horizontal water heater 2 according to a modification, and fig. 5 (b) is an explanatory view showing a state where the horizontal water heater 2 according to the modification is installed. As shown in fig. 5 (b), in the modification, when the horizontal water heater 2 is installed, the exhaust hood 60 is naturally positioned lower than the heat exchanger 50. Therefore, even when the combustion exhaust gas condenses in the heat exchanger 50 to generate condensed water called drain water, the drain water flows from the heat exchanger 50 to the exhaust hood 60, and therefore, the heat exchanger 50 can be prevented from being damaged.
The horizontal water heater 1 of the present embodiment has been described above, but the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
Claims (3)
1. A horizontal type water heater comprising: a combustion container that houses a burner for burning fuel gas; a heat exchanger connected to the combustion container and generating hot water by passing combustion exhaust gas generated by the burner through the heat exchanger; and an exhaust hood provided with an exhaust port through which the combustion exhaust gas passing through the heat exchanger flows out, wherein the combustion container, the heat exchanger, and the exhaust hood are housed in a horizontally connected state in a casing,
the housing is shaped to have a bottom surface and a top surface,
a plurality of leg portions which are projected from the bottom surface and the top surface of the housing and support the horizontal water heater when the horizontal water heater is installed with the bottom surface or the top surface facing downward,
the height of the plurality of leg portions is set so as to support the horizontal water heater in a state that: when the horizontal water heater is installed such that the bottom surface or the top surface faces downward, the horizontal water heater is inclined such that the condensed water in the combustion exhaust gas generated in the heat exchanger flows toward the hood.
2. The landscape style water heater according to claim 1,
the housing is box-shaped having at least one set of sides opposite to each other except the bottom surface and the top surface,
an exhaust gas passage port through which the combustion exhaust gas to be discharged outside the housing passes opens on one of the side surfaces of the group,
a fuel gas passage port through which the fuel gas to be supplied to the burner passes, a water passage port through which the water to be supplied to the heat exchanger passes, and a hot water passage port through which the hot water generated by the heat exchanger passes open on the other of the side surfaces of the group.
3. The horizontal type water heater according to claim 1 or 2,
when attention is paid to a connection portion between the heat exchanger and the exhaust hood, the heat exchanger and the exhaust hood are connected in a state where: when the horizontal water heater is installed, the inner peripheral bottom surface of the exhaust hood into which the condensed water flows is lower than the inner peripheral bottom surface of the heat exchanger through which the condensed water flows.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-134851 | 2016-07-07 | ||
| JP2016134851A JP6719301B2 (en) | 2016-07-07 | 2016-07-07 | Horizontal type water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107588536A CN107588536A (en) | 2018-01-16 |
| CN107588536B true CN107588536B (en) | 2021-05-07 |
Family
ID=60946083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710552186.5A Active CN107588536B (en) | 2016-07-07 | 2017-07-07 | Horizontal water heater |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6719301B2 (en) |
| CN (1) | CN107588536B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54153434U (en) * | 1978-04-18 | 1979-10-25 | ||
| CN2269566Y (en) * | 1996-06-19 | 1997-12-03 | 张天忠 | Solar water heater for four seasons |
| JP2006003035A (en) * | 2004-06-18 | 2006-01-05 | Denso Corp | Heat exchanger |
| CN101509705A (en) * | 2009-04-01 | 2009-08-19 | 南京师范大学 | Condensing gas water heater based on thermosiphon secondary heat exchange |
| CN102155799A (en) * | 2011-04-25 | 2011-08-17 | 海宁伊满阁太阳能科技有限公司 | Solar heat collecting device with water remaining in transverse vacuum heat collecting tube |
| CN103743086A (en) * | 2013-12-21 | 2014-04-23 | 广东万家乐燃气具有限公司 | Condensate-discharge-free gas water heater |
-
2016
- 2016-07-07 JP JP2016134851A patent/JP6719301B2/en active Active
-
2017
- 2017-07-07 CN CN201710552186.5A patent/CN107588536B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54153434U (en) * | 1978-04-18 | 1979-10-25 | ||
| CN2269566Y (en) * | 1996-06-19 | 1997-12-03 | 张天忠 | Solar water heater for four seasons |
| JP2006003035A (en) * | 2004-06-18 | 2006-01-05 | Denso Corp | Heat exchanger |
| CN101509705A (en) * | 2009-04-01 | 2009-08-19 | 南京师范大学 | Condensing gas water heater based on thermosiphon secondary heat exchange |
| CN102155799A (en) * | 2011-04-25 | 2011-08-17 | 海宁伊满阁太阳能科技有限公司 | Solar heat collecting device with water remaining in transverse vacuum heat collecting tube |
| CN103743086A (en) * | 2013-12-21 | 2014-04-23 | 广东万家乐燃气具有限公司 | Condensate-discharge-free gas water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107588536A (en) | 2018-01-16 |
| JP2018004217A (en) | 2018-01-11 |
| JP6719301B2 (en) | 2020-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10145581B2 (en) | Condensate pan with condensate trap | |
| RU2737576C1 (en) | Boiler with fire tubes | |
| EP1872063B1 (en) | Heat exchange apparatus, particularly fire tube condensing boiler | |
| US11287158B2 (en) | Heat exchanger and hot water apparatus | |
| WO2008056238A2 (en) | Boiler with a combustion head cooling system | |
| JP4470790B2 (en) | Reverse combustion water heater | |
| CN107588536B (en) | Horizontal water heater | |
| EP3170564A2 (en) | Pressure washers with infrared burner | |
| US6810836B1 (en) | Finned tube water heater | |
| JP2012137252A (en) | Latent heat exchanger and water heater | |
| KR20140059674A (en) | Apparatus for draining condensed water of condensing boiler | |
| US10746398B2 (en) | Gas fueled water heater appliance having a flame arrestor | |
| JP6062697B2 (en) | Latent heat recovery heat exchanger, combustion block assembly including the latent heat recovery heat exchanger, and combustion apparatus | |
| JP5648834B2 (en) | Drain tank and latent heat recovery combustion device | |
| KR101794572B1 (en) | Oil boiler having combustion gas flow guide | |
| JP3214931U (en) | Vacuum water heater | |
| JP2014070800A (en) | Combustion apparatus | |
| ITMI20121766A1 (en) | CONDENSING EQUIPMENT FOR RECOVERY OF SENSITIVE HEAT FROM THE BOILER | |
| JP6844266B2 (en) | Hot water device | |
| JP2023035367A (en) | Secondary heat exchanger and boiler device | |
| CN220017742U (en) | Warm water device | |
| KR200359592Y1 (en) | Structure for assembling a expansion tank of condensing boiler | |
| JPS605303Y2 (en) | Hot water storage boiler | |
| JP2006349234A (en) | Heat exchanger for gas water heater | |
| JP6449811B2 (en) | Heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1242760 Country of ref document: HK |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |