Hot water storage type heat source device

Abstract

To provide a hot water storage type heat source device with improved heat exchange efficiency.SOLUTION: A hot water storage type heat source device includes a storage section, a combustion section, pipelines and baffle plates. The storage section stores hot water. In the combustion section, fuel is burned. The pipeline is disposed inside the storage section and communicates with the combustion section. The baffle plate is disposed inside the pipeline. The baffle plate has a plate body, deflection parts and mounting plates. The plate body has a first surface and a second surface. The second surface is located opposite to the first surface. The deflection part is inclined to the first surface. The mounting plate is mounted to the plate body. The plate body is provided with opening parts penetrating from the first surface toward the second surface. The mounting plate closes a central region of the opening part in a direction vertical to a longitudinal direction of the baffle plate and in parallel with the first surface. The mounting plate opens an outer region located on the outer side of the central region.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a hot water storage type heat source device. [Background technology]

[0002] For example, Japanese Patent Laid-Open No. 2004-44949 (Patent Document 1) describes a hot water storage type heat source device. The hot water storage type heat source device described in Patent Document 1 has a storage section that stores hot water, a pipe through which combustion gas passes, and a baffle plate arranged inside the pipe. The hot water stored in the storage section is heated by the combustion gas passing through the pipe. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-44949 Summary of the Invention [Problem to be solved by the invention]

[0004] However, there is room for improvement in the heat exchange efficiency of the hot water storage type heat source device described above.

[0005] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide a hot water storage type heat source device with improved heat exchange efficiency. [Means for solving the problem]

[0006] The hot water storage type heat source device of the present disclosure comprises a storage section, a combustion section, a duct, and a baffle plate. The storage section stores hot water. The combustion section combusts fuel. The duct is arranged inside the storage section and communicates with the combustion section. The baffle plate is arranged inside the duct. The baffle plate has a plate body, a deflection section, and an attachment plate. The plate body has a first surface and a second surface. The second surface is located opposite the first surface. The deflection section is inclined with respect to the first surface. The attachment plate is attached to the plate body. The plate body has an opening that penetrates from the first surface to the second surface. The attachment plate blocks a central region of the opening in a direction perpendicular to the longitudinal direction of the baffle plate and parallel to the first surface. The attachment plate opens an outer region that is outside the central region. [Effects of the Invention]

[0007] According to the above, it is possible to obtain a hot water storage type heat source unit with improved heat exchange efficiency. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic cross-sectional view showing the internal structure of a hot water storage type heat source device according to an embodiment. [Figure 2] FIG. 2 is a schematic perspective view of a baffle plate disposed inside a duct according to an embodiment. [Figure 3] FIG. 2 is an exploded perspective view of a baffle plate according to the embodiment. [Figure 4] FIG. 4 is a partially enlarged perspective view of the baffle plate taken along the area IV-IV in FIG. 2. [Figure 5] FIG. 10 is a partially enlarged front view of the baffle plate with the mounting plate removed from the plate body. [Figure 6] FIG. 10 is a partially enlarged front view of the baffle plate with the mounting plate attached to the plate body. [Figure 7] FIG. 10 is a partially enlarged rear view of the baffle plate with the mounting plate attached to the plate body. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts are designated by the same reference numerals, and redundant description will not be repeated.

[0010] (Configuration of hot water storage type heat source unit) The configuration of the hot water storage type heat source device 100 will be described below.

[0011] Fig. 1 is a schematic cross-sectional view showing the internal structure of a hot water storage type heat source device 100 according to an embodiment. Fig. 2 is a schematic perspective view of a baffle plate 4 arranged inside a duct 3 according to an embodiment. Fig. 3 is an exploded perspective view of the baffle plate 4 according to an embodiment. Fig. 4 is a partially enlarged perspective view of the baffle plate 4 in region IV-IV of Fig. 2. As shown in Fig. 1, the hot water storage type heat source device 100 has a storage section 1, a combustion section 2, a plurality of ducts 3, a plurality of baffle plates 4, and a blower 5.

[0012] As shown in Fig. 1, the storage unit 1 is, for example, a cylindrical can body, and has a pipe line 3 and a combustion chamber 21 disposed therein. The inner wall of the storage unit 1, the outer wall of the pipe line 3, and the outer wall of the combustion chamber 21 form an internal space in which hot water is stored. From a different perspective, hot water is stored in an area inside the storage unit 1 other than the area in which the pipe line 3 and the combustion chamber 21 are disposed.

[0013] The storage unit 1 may be provided with a water inlet and a water outlet (not shown). The water inlet is connected to a water supply source or the like and supplies water to the internal space of the storage unit 1. The water outlet is connected to a faucet or the like and discharges hot and cold water stored in the internal space of the storage unit 1.

[0014] The combustion section 2 has a combustion chamber 21 and a fuel injection section 22. The fuel injection section 22 may include a nozzle that injects fuel into the internal space of the combustion chamber 21 and a burner that burns the fuel (not shown). The fuel is, for example, a liquid fuel such as kerosene. The fuel injected into the internal space of the combustion chamber 21 by the nozzle is burned by the burner. The combustion of the fuel in the internal space of the combustion chamber 21 generates high-temperature combustion gas FG and a flame.

[0015] The fuel introduction section 22 and the blower 5 are disposed outside the storage section 1. The fuel introduction section 22 is connected from the outside of the storage section 1 to the internal space of the combustion chamber 21. The blower 5 supplies combustion air to the combustion chamber 21.

[0016] A plurality of conduits 3 communicating with the internal space of the combustion chamber 21 are arranged above the combustion chamber 21. The number of conduits 3 is, for example, six. The conduits 3 are cylindrical. Specifically, the conduits 3 have a first opening 3a and a second opening 3b. The conduits 3 open at the first opening 3a so as to communicate with the combustion chamber 21. The second opening 3b is located opposite the first opening 3a in the direction in which the conduits 3 extend. In other words, the conduits 3 extend from the first opening 3a toward the second opening 3b.

[0017] An exhaust gas chamber (not shown) communicating with the plurality of ducts 3 may be disposed above the plurality of ducts 3. The ducts 3 open at second openings 3b so as to communicate with the exhaust gas chamber. A baffle plate 4 is disposed inside each of the plurality of ducts 3.

[0018] The combustion gas FG generated in the combustion chamber 21 flows into the duct 3. The combustion gas FG passes through the duct 3 along the direction in which the duct 3 extends. Because a baffle plate 4 is disposed inside the duct 3, the combustion gas FG passes through the duct 3 in a serpentine manner. As a result, the combustion gas FG comes into contact with the inner wall of the duct 3, and heat exchange occurs between the high-temperature combustion gas FG and the hot water in the storage section 1. In this way, the water in the storage section 1 is heated.

[0019] (Baffle plate configuration) The structure of the baffle plate 4 will be described below.

[0020] 1 to 3, the baffle plate 4 includes a plate body 41, a plurality of deflection portions 42, two mounting plates 43, and two bent portions 44. The plate body 41 includes a first surface 41a and a second surface 41b. The second surface 41b is located opposite the first surface 41a. In FIG. 2, the duct 3 is indicated by a dotted line.

[0021] The extending direction of the plate body 41 is the z direction and the y direction. The direction perpendicular to the first surface 41a is the x direction. The longitudinal direction of the baffle plate 4 is the z direction. The y direction is perpendicular to the x direction and the z direction. In other words, the y direction is perpendicular to the longitudinal direction (z direction) of the baffle plate 4 and is parallel to the first surface 41a.

[0022] As shown in Figure 2, the baffle plate 4 is positioned inside the pipe 3 so that the longitudinal direction (z direction) of the baffle plate 4 is the direction in which the pipe 3 extends, and the x and y directions are the radial directions of the pipe 3.

[0023] The width of the plate 41 in the y direction may be the same as the inner diameter of the pipeline 3. The length of the plate 41 in the z direction may be the same as the length of the pipeline 3 in the direction in which the pipeline 3 extends (the distance from the first opening 3a to the second opening 3b).

[0024] Of the multiple deflection sections 42, five deflection sections 42 are formed along the x direction from the first surface 41a. Of the multiple deflection sections 42, the remaining five deflection sections 42 are formed along the -x direction from the second surface 41b. The multiple deflection sections 42 are arranged at equal intervals along the z direction. Of the multiple deflection sections 42, deflection sections 42 that are arranged adjacent to each other in the z direction extend from the plate body 41 in opposite directions to each other.

[0025] Each of the multiple deflection portions 42 is arranged to block half of the pipe line 3. Specifically, the deflection portions 42 are inclined with respect to the first surface 41a and the second surface 41b. The deflection portions 42 may be perpendicular to the first surface 41a and the second surface 41b. In this manner, the deflection portions 42 block part of the pipe line 3, and thereby the deflection portions 42 prevent the combustion gas FG passing through the pipe line 3 from moving in the z direction.

[0026] In a plan view seen from the z direction, the deflection portion 42 has a semicircular shape. The deflection portion 42 may be in contact with the inner wall of the pipe 3.

[0027] The plate body 41 is provided with a plurality of openings N penetrating from the first surface 41a to the second surface 41b. In a front view seen from the x direction, the openings N are an area surrounded by the plate body 41, the deflection portion 42, and the bending portion 44 (see FIG. 5). The openings N are provided in the center of the plate body 41 in the y direction. By providing the openings N in the plate body 41, the combustion gas FG passing through the duct 3 moves in the x direction so as to pass through the openings N (see FIG. 1).

[0028] The openings N are arranged at equal intervals along the z direction. In the z direction, the openings N are arranged between the deflection section 42 formed along the x direction from the first surface 41a and the deflection section 42 formed along the −x direction from the second surface 41b.

[0029] The shape of the openings N in a front view from the x direction may be the same as the shape of the deflection sections 42 in a plan view from the z direction. A baffle plate 4 having openings N and deflection sections 42 formed therein can be obtained by providing a plurality of cuts in the strip-shaped plate body 41 and folding back the cuts alternately.

[0030] As shown in FIG. 4, the baffle plate 4 has a pair of bent portions 44. The bent portions 44 are formed by bending both ends of the plate body 41 in the y direction. The bent portions 44 are formed along the -x direction from the second surface 41b. The pair of bent portions 44 face each other. The pair of bent portions 44 are arranged so as to sandwich the opening N and the deflection portion 42 in the y direction. The pair of bent portions 44 may contact the inner wall of the pipe 3.

[0031] Here, a feature of the hot water storage type heat source device 100 according to this embodiment is that, as shown in Figures 1 to 6, a mounting plate 43 that closes the central area A1 of the opening N is attached to the plate body 41. As shown in Figure 3, two mounting plates 43 are attached to the plate body 41.

[0032] Fig. 5 is a partially enlarged front view of the baffle plate 4 when the mounting plate 43 is removed from the plate body 41. Fig. 6 is a partially enlarged front view of the baffle plate 4 when the mounting plate 43 is attached to the plate body 41.

[0033] 3, the width of the mounting plate 43 in the y direction may be the same as the width of the plate body 41 in the y direction. Four notches n1 are provided in the mounting plate 43. The notches n1 are provided at both ends of the mounting plate 43 in the y direction. Two notches n1 are provided at one end of the mounting plate 43 in the y direction. The two notches n1 provided at one end are spaced apart from each other in the z direction.

[0034] As shown in FIG. 5, the central region A1 is the region at the center of the opening N in the y direction (a direction perpendicular to the longitudinal direction of the baffle plate 4 and parallel to the first surface 41a). The outer regions A2 are regions located outside the central region A1 in the y direction. The central region A1 is sandwiched between a pair of outer regions A2 in the y direction. As shown in FIG. 5, when the mounting plate 43 is detached from the plate body 41, the entire region where the opening N is formed is open, and the central region A1 and the pair of outer regions A2 are open.

[0035] On the other hand, as shown in Fig. 6, when the mounting plate 43 is attached to the plate body 41, the mounting plate 43 is positioned so as to block the central region A1 of the opening N but not the outer region A2. Specifically, by attaching the mounting plate 43 to the plate body 41 so that the region formed by the notch n1 in the mounting plate 43 is located in the outer region A2, only the pair of outer regions A2 are opened. In this way, the combustion gas FG is dispersed so as to flow outward from the center of the duct 3 in the y direction. As a result, the amount of combustion gas FG that comes into contact with the inner wall of the duct 3 increases, and the heat exchange efficiency of the hot water storage-type heat source device 100 increases.

[0036] The internal space of the duct 3 is divided into a region where the first surface 41a is located and a region where the second surface 41b is located. The combustion gas flows, for example, from the region where the first surface 41a is located through the outer region A2 to the region where the second surface 41b is located. Then, in the region where the second surface 41b is located, the combustion gas diffuses toward the center in the y direction and flows again through the outer region A2 to the region where the first surface 41a is located.

[0037] 1 and 3, two adjacent openings N are closed by one mounting plate 43. Specifically, the mounting plate 43 is disposed between two adjacent deflection portions 42 formed along the −x direction from the second surface 41b.

[0038] As shown in Fig. 1, in the direction (z direction) in which combustion gas FG generated in the combustion section 2 flows, the duct 3 includes an upstream region FP1 and a downstream region FP2. The upstream region FP1 is the region from the first opening 3a to the center of the duct 3 (the center in the z direction between the first opening 3a and the second opening 3b). The downstream region FP2 is the region from the center of the duct 3 (the center in the z direction between the first opening 3a and the second opening 3b) to the second opening 3b. The combustion gas FG flows from the upstream region FP1 to the downstream region FP2 in the duct 3.

[0039] If the mounting plates 43 are placed in all of the openings N, the flow resistance caused by the baffle plates 4 increases but the heat exchange efficiency does not improve, combustibility deteriorates, and unburned gases such as carbon monoxide (CO) or soot are emitted.

[0040] 1, the mounting plate 43 may be disposed in the upstream region FP1 instead of the downstream region FP2 of the pipe 3. The combustion gas FG passing through the upstream region FP1 has a higher temperature than the combustion gas FG passing through the downstream region FP2. Therefore, by disposing the mounting plate 43 in the upstream region FP1 instead of the downstream region FP2, the flow resistance of the baffle plate 4 is suppressed and the heat exchange efficiency is improved.

[0041] As shown in Fig. 4, the mounting plate 43 has a pair of locking portions 43a and a pair of fixing portions 43b. Each of the pair of locking portions 43a is disposed at both ends of the mounting plate 43. The locking portion 43a is disposed between two notches n1 provided at one end of the mounting plate 43 in the y direction. The locking portions 43a are formed by bending a portion of each end of the mounting plate 43 in the y direction. The pair of locking portions 43a face each other.

[0042] The mounting plate 43 is attached to the plate body 41 using the locking portions 43a. Specifically, as shown in FIGS. 4 and 5, the plate body 41 is provided with receiving portions n2 as notches. The receiving portions n2 form part of the opening N. The pair of receiving portions n2 are arranged to sandwich the deflection portion 42 in the y direction. By arranging the locking portions 43a on the receiving portions n2, the mounting plate 43 is prevented from falling.

[0043] 4, the pair of locking portions 43a are arranged to sandwich the deflection portion 42 in the y direction. The locking portions 43a may contact the side surfaces of the deflection portion 42. This prevents the mounting plate 43 from shifting in the y direction.

[0044] The pair of fixing portions 43b are each disposed at both ends of the mounting plate 43. The fixing portion 43b is disposed between two notches n1 provided at one end of the mounting plate 43 in the y direction. The fixing portion 43b is disposed below the locking portion 43a in the z direction. The fixing portions 43b are formed by folding back and bending a portion of both ends of the mounting plate 43 in the y direction.

[0045] 4, fixing portions 43b formed by folding back portions of both ends of the mounting plate 43 in the y direction are disposed so as to face the first surface 41a. In this manner, the mounting plate 43 can be fixed to the plate body 41.

[0046] 7 is a partially enlarged rear view of the baffle plate 4 with the mounting plate 43 attached to the plate body 41. As shown in FIG. 7, the mounting plate 43 has four positioning portions 43c. The positioning portions 43c are arranged on both ends of the mounting plate 43. The positioning portions 43c are formed so as to protrude from both ends of the mounting plate 43 in the y direction.

[0047] The positioning portion 43c is in contact with the bent portion 44. In this way, the mounting plate 43 fixes the position of the mounting plate 43 in the y direction.

[0048] (Effects of hot water storage type heat source unit) A hot water storage type heat source device 100 according to the present disclosure comprises a storage section 1, a combustion section 2, a duct 3, and a baffle plate 4. The storage section 1 stores hot water. The combustion section 2 combusts fuel. The duct 3 is disposed inside the storage section 1 and communicates with the combustion section 2. The baffle plate 4 is disposed inside the duct 3. The baffle plate 4 has a plate body 41, a deflection section 42, and a mounting plate 43. The plate body 41 has a first surface 41a and a second surface 41b. The second surface 41b is located opposite the first surface 41a. The deflection section 42 is inclined with respect to the first surface 41a. The mounting plate 43 is attached to the plate body 41. The plate body 41 has an opening N that penetrates from the first surface 41a to the second surface 41b. The mounting plate 43 closes a central region A1 of the opening N in a direction (y direction) perpendicular to the longitudinal direction (z direction) of the baffle plate 4 and parallel to the first surface 41a. The mounting plate 43 opens an outer region A2 located outside the central region A1.

[0049] In this way, the combustion gas FG is dispersed so that it flows outward from the center of the pipe 3. As a result, the amount of combustion gas FG that comes into contact with the inner wall of the pipe 3 increases, and the heat exchange efficiency of the hot water storage type heat source device 100 increases.

[0050] According to the hot water storage type heat source device 100, the pipe 3 includes an upstream region FP1 and a downstream region FP2 in the flow direction of the combustion gas FG generated in the combustion section 2. The mounting plate 43 is disposed in the upstream region FP1.

[0051] In this way, the flow resistance of the baffle plate 4 can be reduced, and the heat exchange efficiency can be improved.

[0052] According to the hot water storage type heat source device 100, the mounting plate 43 has a locking portion 43a. The mounting plate 43 is attached to the plate body 41 using the locking portion 43a.

[0053] In this way, the mounting plate 43 can be easily attached to the plate body 41.

[0054] The embodiments disclosed herein are illustrative in all respects and should not be considered limiting. The scope of the present disclosure is defined by the claims rather than the above embodiments, and all modifications within the meaning and scope of the claims are intended to be included. [Explanation of symbols]

[0055] 1 storage section, 2 combustion section, 3 duct, 3a first opening, 3b second opening, 4 baffle plate, 5 blower, 21 combustion chamber, 22 fuel injection section, 41 plate body, 41a first surface, 41b second surface, 42 deflection section, 43 mounting plate, 43a locking section, 43b fixing section, 43c positioning section, 44 bending section, 100 hot water storage type heat source, A1 central region, A2 outer region, FP1 upstream region, FP2 downstream region, FG combustion gas, n1 notch, N opening, n2 receiving section.

Claims

1. a storage section for storing hot and cold water; a combustion section in which fuel is burned; a conduit disposed inside the storage section and communicating with the combustion section; a baffle plate disposed inside the duct; The baffle plate includes a plate body having a first surface and a second surface located opposite the first surface, a deflection portion inclined with respect to the first surface, and a mounting plate attached to the plate body, The plate body has an opening extending from the first surface to the second surface, A hot water storage type heat source device in which the mounting plate blocks the central region of the opening in a direction perpendicular to the longitudinal direction of the baffle plate and parallel to the first surface, and opens an outer region that is outside the central region.

2. the duct includes an upstream region and a downstream region in a flow direction of the combustion gas generated in the combustion section, The hot water storage type heat source device according to claim 1 , wherein the mounting plate is disposed in the upstream region.

3. The mounting plate has a locking portion, The hot water storage type heat source device according to claim 1 or 2, wherein the mounting plate is attached to the plate body using the locking portion.

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