JP2014228249A - Hot water storage/supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water storage/supply device capable of securing fixing intensity without damaging assemblability and maintainability of an auxiliary heat source machine, even when an exterior case is miniaturized.SOLUTION: A hot water storage/supply device 1 includes: a hot water storage tank 2; a combustion type auxiliary heat source machine 3; and an exterior case 4 incorporating the hot water storage tank 2 and the auxiliary heat source machine 3. The exterior case 4 is configured by a rectangular-like rectangular parallelepiped in a plan view, an opening 16 for maintenance is provided on a side surface part on a short side of the rectangular parallelepiped, an exhaust port 7 of the auxiliary heat source machine 3 is provided on the side surface part on the long side of the rectangular parallelepiped, a hook part 23 is provided at an upper part on the opening side of an auxiliary heat source machine body 6, and an engagement part 25 is provided at a lower part on the depth side of the auxiliary heat source machine body 6. When fixing the auxiliary heat source machine 3 to a frame member 8 of the exterior case 4, the hook part 23 is hooked to an upper frame 11 in a rotatable manner, the engagement part 25 is engaged with an engagement receiving part 26 provided at an intermediate plate 12 partitioning between the hot water storage tank 2 and the auxiliary heat source machine 3, and the lower part on the opening side of the auxiliary heat source machine body 6 is fixed at the frame member 8.

Description

  The present invention relates to a hot water storage and hot water supply apparatus, and more particularly to an apparatus capable of securing the fixing strength of an auxiliary heat source device even when an exterior case is downsized.

  2. Description of the Related Art Conventionally, hot water storage and hot water supply devices that can generate hot water and store hot water and supply it to a desired hot water supply destination have been put to practical use. This type of hot water storage and hot water supply equipment includes a hot water storage tank for storing hot water, various valve members and various pipes, an auxiliary heat source device that heats when the temperature of the hot water stored in the hot water storage tank decreases, and these devices. It has a built-in exterior case, an external main heat source machine, and the like.

  In the conventional hot water storage and hot water supply apparatus, the exterior case is composed of a columnar frame member and an outer plate member that covers the outer surface, and the auxiliary heat source machine is fixed to the columnar frame member. The auxiliary heat source machine incorporated in the hot water storage and hot water supply device is not necessarily housed in a dedicated box-shaped case member, but the outer surface of various cans such as burner cans and heat exchanger cans constituting the auxiliary heat source machine In a state where is exposed, it is directly fixed to the columnar frame member.

  The applicant of the present application has proposed a fixing structure for the frame member 53 of the outer case 52 of the auxiliary heat source machine 51 as shown in FIG. That is, the upper part of the front end of the auxiliary heat source machine 51 is hooked on the upper frame 53 a of the frame member 53, and both ends of the fixing plate part 54 extending in the left-right direction at the lower part of the rear end of the auxiliary heat source machine 51 are It is fixed to a pair of middle-stage horizontal racks 55 extending in the direction. In general, the exterior case 52 is provided with a maintenance opening 56 covered with a front cover 52a, and the auxiliary heat source unit 51 has a frame member so that the exhaust port 57 faces the opening (front side). 53 is fixed.

  Moreover, in the fixing structure of an auxiliary heat source machine, the structure as shown, for example in patent document 1 is also disclosed. That is, in the mounting structure of the heat exchanger unit (heat exchanger can body) of Patent Document 1, the bent heat exchange engagement portion provided on the back side of the heat exchanger unit is provided inside the outer case. The heat exchanger unit is temporarily fixed to the mounting plate by engaging with the pocket-shaped heat exchanger of the mounting plate, and then the heat exchanger unit is fixed to the mounting plate via a plurality of screws. It is disclosed.

JP-A-10-89774

  By the way, in recent years, downsizing is required in order to install the hot water storage hot water supply device in a narrow space, but when the hot water storage hot water supply device is downsized, the opening for maintenance of the exterior case becomes narrow, so an auxiliary heat source It becomes difficult to install the machine with the exhaust port facing the opening (front exhaust). For this reason, it is necessary to install the auxiliary heat source unit in a state where the exhaust port faces sideways with respect to the opening (side exhaust).

  However, for the sake of maintenance, it is desirable to assemble the auxiliary heat source machine from the opening (front side) of the outer case. When installing the auxiliary heat source machine in the horizontal orientation from the opening, the space to accommodate the auxiliary heat source machine is a horizontally long structure from the opening to the back side, so work on the back side of the auxiliary heat source machine There is a problem that it is difficult for a worker to reach, the fastening operation of the fixing screw is difficult, and the assembling property of the auxiliary heat source machine is deteriorated. In addition, if the auxiliary heat source device is fixed in a lateral orientation with respect to the opening, it becomes difficult to remove the auxiliary heat source device from the opening during maintenance, so that there is a problem that the maintainability deteriorates.

  An object of the present invention is to provide a hot water storage and hot water supply device that can secure a fixing strength without impairing the assembly and maintenance of the auxiliary heat source unit even when the exterior case is downsized. And the like that can be fixed quickly.

  The hot water storage hot water supply apparatus according to claim 1 includes a hot water storage tank for storing hot water, a combustion-type auxiliary heat source device that heats the hot water in the hot water storage tank when the temperature is low, the hot water storage tank, and the auxiliary heat source device. And in the hot water storage and hot water supply apparatus provided with an exterior case composed of a columnar frame member and an outer plate member that covers the outer surface, the exterior case is composed of a rectangular parallelepiped in a plan view, on the short side of the rectangular parallelepiped An opening for maintenance is provided on one side surface, and an exhaust port of the auxiliary heat source device is provided on one side surface on the long side of the rectangular parallelepiped, and the opening side of the auxiliary heat source device main body in the auxiliary heat source device When the auxiliary heat source machine is fixed to the frame member, a hook part is provided at the upper part, and an engaging part is provided at the back lower part of the auxiliary heat source machine main body. Times to the upper frame The engagement portion is engaged with an engagement receiving portion provided on an intermediate plate portion that is hooked and partitioned between the hot water storage tank and the auxiliary heat source device, and the lower portion on the opening side of the auxiliary heat source device main body Is fixed to the frame member.

  A hot water storage and hot water supply apparatus according to a second aspect is the invention according to the first aspect, wherein the engagement portion includes an engagement convex portion protruding downward, and the engagement receiving portion includes an engagement hole portion penetrating in the vertical direction. And the engagement convex portion is engaged with the engagement hole portion to fix the lower side lower portion of the auxiliary heat source machine main body to the middle plate portion.

  According to a third aspect of the present invention, there is provided a hot water storage and hot water supply apparatus according to the first aspect of the invention, wherein the engaging portion includes a slit portion having an open back end, and the engagement receiving portion opens toward the opening side. And the lower part of the back side of the auxiliary heat source machine main body is fixed to the middle plate part by engaging the slit part with the V-shaped slit part.

  According to a fourth aspect of the present invention, in the hot water storage and hot water supply apparatus according to any one of the first to third aspects, the engagement receiving portion is formed by cutting and raising a part of the middle plate portion. .

  According to the first aspect of the present invention, when the auxiliary heat source device is fixed to the frame member, the hooking portion is pivotably hooked to the upper frame which is a part of the frame member, and the hot water storage tank and the auxiliary heat source device are Since the engagement portion is engaged with the engagement receiving portion provided in the intermediate plate portion that partitions the space, and the lower part on the opening side of the auxiliary heat source machine body is fixed to the frame member, the auxiliary heat source is not used without using a fixing screw. The lower part of the back side of the machine body can be fixed to the middle plate part.

  Therefore, it becomes easy to fix the lower part of the back side of the auxiliary heat source machine body that is difficult for a worker to reach, so that the assembly of the auxiliary heat source machine to the frame member is improved. By fixing the lower part of the auxiliary heat source machine main body without using a fixing screw, the auxiliary heat source machine can be easily removed from the opening during maintenance, so that maintainability is also improved. Since the three parts of the auxiliary heat source unit, the upper part on the opening side, the lower part on the opening side, and the lower part on the back side are fixed to the frame member and the middle plate part, sufficient fixing strength is maintained without impairing the assembly and maintenance of the auxiliary heat source unit. Can be secured.

  According to the invention of claim 2, the engaging portion includes an engaging convex portion that is convex downward, and the engaging receiving portion includes an engaging hole portion that penetrates in the vertical direction, and engages the engaging convex portion. By engaging with the hole, the back side lower part of the auxiliary heat source machine main body is fixed to the middle plate part, so that the engagement convex part can be engaged only by rotating the auxiliary heat source machine main body with the latching part as a fulcrum. It is possible to engage with the joint hole portion, and therefore it is possible to easily and quickly fix the lower part of the back side of the auxiliary heat source machine main body.

  According to the invention of claim 3, the engaging portion includes a slit portion having an open back end, the engagement receiving portion includes a V-shaped slit portion that opens toward the opening side, and the slit portion is a V-shaped slit. Because the lower part of the back side of the auxiliary heat source machine body is fixed to the middle plate part by engaging with the part, the slit part can be turned into a V-shaped slit part simply by rotating the auxiliary heat source machine body around the latching part. Therefore, the back side lower part of the auxiliary heat source machine main body can be easily and quickly fixed.

  According to the invention of claim 4, since the engagement receiving portion is formed by cutting and raising a part of the middle plate portion, it is advantageous when the engagement receiving portion is manufactured, and an increase in the number of parts is suppressed. The manufacturing cost can be reduced.

It is a perspective view of the auxiliary heat source machine and exterior frame of the hot water storage hot-water supply apparatus concerning Example 1. FIG. It is a fragmentary perspective view of an auxiliary heat source machine and a frame member. It is a perspective view of an engaging part and an engagement receiving part. It is a fragmentary perspective view of the frame member before fixing an auxiliary heat source machine. It is a fragmentary perspective view of the auxiliary heat source machine of the state which latched the latching part to the frame member and the upper frame of this frame member. It is a fragmentary perspective view of the auxiliary heat source machine fixed to the frame member and this frame member. It is a perspective view of the engaging part and engagement receiving part which concern on Example 2. FIG. It is a perspective view of the auxiliary heat source machine and exterior frame of the conventional hot water storage hot-water supply apparatus.

  Hereinafter, embodiments of the present invention will be described based on examples.

Initially, the whole structure of the hot water storage hot-water supply apparatus 1 is demonstrated easily.
As shown in FIG. 1, a hot water storage and hot water supply apparatus 1 has functions such as hot water storage, hot water supply, hot water supply to a hot water heating terminal such as a floor heating panel, hot water supply to a bath, and reheating. Is equipped with a hot water storage tank 2, a combustion-type auxiliary heat source 3 that heats when the hot water in the hot water tank 2 is at a low temperature, various valve members and various pipes, most of which are built in the outer case 4. Has been configured. Note that the front-rear and left-right directions shown in FIG.

  The hot water storage hot water supply device 1 includes, for example, an exhaust heat recovery heat exchanger of a fuel cell power generation device capable of heating hot water in the hot water tank 2 as an external main heat source, and the fuel cell power generation device and the hot water storage hot water supply device 1. The fuel cell cogeneration system is configured by combining with a heating circulation passage for circulating hot water between and the like, but detailed description of the configuration other than the hot water storage hot water supply device 1 is omitted. Moreover, you may employ | adopt another heat source machine (for example, heat pump type heat source machine) as an external main heat source machine.

  The hot water tank 2 is composed of a sealed tank capable of storing high-temperature hot water (for example, 80 to 90 ° C.) heated by an external main heat source machine (see the broken line in FIG. 1) to prevent heat dissipation of the stored hot water. The tank is covered with insulation.

Next, the auxiliary heat source unit 3 will be described.
As shown in FIGS. 1 and 2, the auxiliary heat source unit 3 includes a blower fan 5, an auxiliary heat source unit body 6 incorporating a gas burner and a heat exchanger, and various pipes such as a water inlet pipe, a hot water outlet pipe and a drain pipe. It is composed of a known gas water heater. The auxiliary heat source unit 3 is combusted and activated only in special cases such as when the hot water temperature in the hot water tank 2 is lower than the set temperature, and heats the hot water.

  The auxiliary heat source machine main body 6 includes a box-shaped burner can body 6a containing a plurality of burners, a heat exchanger can body 6b provided above the burner can body 6a and containing a heat exchanger, and the heat exchanger can. The exhaust fan tube 5 is provided on the lower end portion of the burner can body 6a. The exhaust fan tube 6c is provided on the upper side of the body 6b and provided with an exhaust port 7 for discharging the exhaust gas after heat exchange to the right. ing.

Next, the exterior case 4 will be described.
As shown in FIG. 1, the exterior case 4 includes a columnar frame member 8 and an outer plate member 9 that covers the outer surface, and is configured in a rectangular parallelepiped in plan view. The outer plate member 9 includes a front plate 9a, a left side plate 9b, a right side plate 9c, a rear plate 9d, a top plate 9e, and the like. The outer plate member 9 is made of a thin steel plate having a thickness of 0.3 to 0.5 mm, for example.

  The frame member 8 includes a plurality of vertical racks 8 a extending in the vertical direction, a plurality of horizontal racks 8 b that are fixed to upper ends of the plurality of vertical racks 8 a and that constitute the upper frame 11. An auxiliary heat source unit 3 for heating hot water is fixed to the upper part of the frame member 8.

  The frame member 8 is provided with an intermediate plate portion 12 that partitions the hot water storage tank 2 and the auxiliary heat source unit 3. The middle plate portion 12 is fixed in a vertical orientation on the back side of the frame member 8. A fixing horizontal rack 15 for fixing the front lower portion (opening portion lower portion) of the auxiliary heat source machine main body 6 is installed at a portion closer to the upper middle portion of the plurality of vertical racks 8a so as to extend in the left-right direction.

  In the exterior case 4, an opening 16 for maintenance is provided on one side surface (front surface) on the short side of the rectangular parallelepiped, and this opening 16 is covered with a front plate 9a (see FIG. 1). An exhaust port 7 of the auxiliary heat source unit 3 is provided on one side surface (right surface) on the long side of the rectangular parallelepiped (see FIGS. 1, 5, and 6).

Next, the fixing structure with respect to the frame member 8 of the auxiliary heat source machine 3 will be described.
As shown in FIGS. 1 and 2, in the auxiliary heat source machine 3, an upper fixing member 21 is provided at the front upper part (opening part upper part) of the auxiliary heat source machine body 6, and the left lower part (exhaust port) of the auxiliary heat source machine body 6. A lower fixing member 22 is provided at a lower portion on the opposite side to 7.

  When the auxiliary heat source unit 3 is fixed to the frame member 8, the auxiliary heat source unit 3 is arranged at about 1/3 of the upper side inside the outer case 4, and the front end upper part of the auxiliary heat source unit main body 6 is disposed via the upper fixing member 21. Fixed to the upper frame 11, the lower end lower part of the auxiliary heat source machine body 6 is fixed to the middle plate part 12 through the lower fixing member 22, and the lower front end of the auxiliary heat source machine body 6 is fixed to the fixing horizontal rack 15. .

  As shown in FIG. 2, the upper fixing member 21 is configured in a crank shape when viewed from the side, and is fixed to the front upper portion of the auxiliary heat source machine body 6. That is, the upper fixing member 21 has an upper vertical plate portion 21a, an intermediate horizontal plate portion 21b, and a lower vertical plate portion 21c. The lower vertical plate portion 21c is fixed to the front end portion of the exhaust collecting cylinder 6c via a plurality of screws.

  A hooking portion 23 and a fastening plate portion 24 are formed at the upper end portion of the upper vertical plate portion 21a. The hook portion 23 has a pair of cut and raised pieces 23 a that can be engaged with a pair of small engagement holes 11 a formed in the upper frame 11 and bent rearward. The fastening plate portion 24 is formed between the pair of cut and raised pieces 23a, and is formed with a pair of insertion holes through which the fixing screws 24a can be inserted. The upper vertical plate portion 21a is fixed to the upper frame 11 via a plurality of fixing screws 24a.

  As shown in FIG. 2, the lower fixing member 22 is composed of an elongated metal plate extending in the front-rear direction, and is fixed to the lower left portion (lower portion opposite to the exhaust port 7) of the auxiliary heat source machine body 6 in a vertical posture. ing. That is, the lower fixing member 22 has a front plate portion 22a, an intermediate plate portion 22b, and a back plate portion 22c. The front plate portion 22a is fixed to the fixing horizontal rack 15 via a plurality of fixing screws 15a. The intermediate plate portion 22b is fixed to the lower left portion of the heat exchanger can body 6b via fixing screws 22d. An engaging part 25 is provided at the back end of the back side plate part 22c at the back side lower part of the auxiliary heat source machine body 6.

Next, the engaging portion 25 will be described.
As shown in FIG. 3, the engaging portion 25 is formed in a substantially U shape in a side view at the back end portion of the back side plate portion 22 c and can be engaged with an engagement receiving portion 26 provided in the middle plate portion 12. Is. The engaging portion 25 is formed on the innermost side and has a convex protruding convex portion 25a on the lower side, a receiving concave portion 25b formed on the front side of the engaging convex portion 25a and opened downward, and below the receiving concave portion 25b. And a relief recess 25c that is open at the back. The engaging convex portion 25a is formed with a tapered portion 25d that is inclined forward toward the lower side.

Next, the engagement receiving portion 26 will be described.
As shown in FIG. 3, the engagement receiving portion 26 is formed on a cut-and-raised plate portion 12 a that is formed by cutting and raising a part of the middle plate portion 12. The cut-and-raised plate portion 12 a is formed on the upper side of the middle plate portion 12. The engagement receiving portion 26 is formed at the rear end portion of the cut and raised plate portion 12a and penetrates in the vertical direction, the engagement plate portion 26b formed on the front side of the engagement hole portion 26a, and the engagement plate portion 26a. A recessed portion 26c formed on the front side of the plywood portion 26b, a front end portion of the recessed portion 26c, and a V-shaped opening portion 26d that opens forward are provided.

  In a state where the back end portion of the lower fixing member 22 is fixed to the middle plate portion 12 via the engagement portion 25 and the engagement receiving portion 26, the engagement convex portion 25a is engaged with the engagement hole portion 26a. The engaging plate portion 26b is engaged with the housing recess 25b.

Next, the operation and effect of the hot water storage and hot water supply apparatus 1 of the present invention will be described.
When the auxiliary heat source device 3 is fixed to the frame member 8 shown in FIG. 4, first, as shown in FIG. 5, the auxiliary heat source device 3 is inclined so that the upper fixing member 21 is positioned upward. The latching portion 23 of the upper fixing member 21 is pivotably latched on the upper frame 11 that is a part of the frame member 8. That is, the pair of cut and raised pieces 23 a of the latching portion 23 are engaged with the pair of engagement small holes 11 a of the upper frame 11.

  Next, as shown in FIG. 6, when the auxiliary heat source device 3 is turned to the vertical position by turning the auxiliary heat source device 3 toward the middle plate portion 12 in the back (backward) direction with the latch portion 23 as a fulcrum. At the same time, the rear end portion of the lower fixing member 22 is brought into contact with the cut and raised plate portion 12a of the middle plate portion 12, and at the same time, the engaging portion 25 is engaged with the engagement receiving portion 26, so that the auxiliary heat source machine body 6 The back side lower part is fixed to the middle plate part 12 (refer FIG. 2).

  Specifically, with the rotation of the auxiliary heat source device 3, the engaging convex portion 25a of the engaging portion 25 is inserted into the V-shaped opening 26d of the engaging receiving portion 26 and is brought into contact with the back end portion of the concave portion 26c. Then, the taper portion 25d of the engaging convex portion 25a presses the engaging plate portion 26b downward, and the engaging convex portion 25a moves toward the back while pressing the engaging plate portion 26b downward. The tip of the engaging plate portion 26 b that is pressed downward and inclined with this movement is inserted into the relief recess 25 c of the engaging portion 25, thereby preventing the engaging plate portion 26 b from interfering with the lower fixing member 22. Can do.

  When the engaging convex portion 25a is engaged with the engaging hole portion 26a, the downward pressing state of the engaging plate portion 26b is released to return to the original horizontal state, and the engaging plate portion 26b is accommodated in the receiving concave portion 25b. It is stored in. In this way, by engaging the engagement convex portion 25a with the engagement hole portion 26a, the lower part on the back side of the auxiliary heat source device main body 6 can be fixed to the middle plate portion 12.

  Next, as shown in FIG. 2, by fixing the fastening plate portion 24 of the upper vertical plate portion 21a to the upper frame 11 via a plurality of fixing screws 24a, the front upper portion (opening portion) of the auxiliary heat source device main body 6 is opened. The upper side) is fixed to the frame member 8 and the front end of the lower fixing member 22 is fixed to the fixing horizontal rack 15 via a plurality of fixing screws 15a. The auxiliary heat source unit 3 is fixed to the frame member 8. When releasing the fixing of the lower part of the back side of the auxiliary heat source machine body 6, the plurality of fixing screws 15a and the plurality of fixing screws 24a are removed, and the auxiliary heat source machine body 6 is slightly lifted upward to engage the engaging convex portion 25a. The fixation can be released by detaching from the hole 26a.

  As described above, when the auxiliary heat source device 3 is fixed to the frame member 8, the hooking portion 23 is pivotably hooked to the upper frame 11 that is a part of the frame member 8, and the hot water storage tank 2 and the auxiliary heat source. Since the engagement portion 25 is engaged with the engagement receiving portion 26 provided in the intermediate plate portion 12 that partitions the machine 3 and the lower portion on the opening side of the auxiliary heat source device main body 6 is fixed to the frame member 8, it is fixed The lower part of the back side of the auxiliary heat source machine main body 6 can be fixed to the middle plate part 12 without using a service screw.

  Accordingly, it becomes easy to fix the lower part of the back side of the auxiliary heat source machine main body 6 that is difficult for workers to reach, so that the assembly of the auxiliary heat source machine 3 to the frame member 8 is improved. By fixing the lower part of the back side of the auxiliary heat source machine body 6 without using a fixing screw, the auxiliary heat source machine 3 can be easily removed from the opening 16 at the time of maintenance, so that the maintainability is also improved. Since the three locations of the opening side upper part, the opening side lower part and the back side lower part of the auxiliary heat source machine main body 6 are fixed to the frame member 8 and the middle plate part 12, the assemblability and maintainability of the auxiliary heat source machine 3 are not impaired. Sufficient fixing strength can be ensured.

  The engaging portion 25 includes an engaging convex portion 25a that protrudes downward, and the engagement receiving portion 26 includes an engaging hole portion 26a that penetrates in the vertical direction, and the engaging convex portion 25a is connected to the engaging hole portion. Since the lower part of the back side of the auxiliary heat source device main body 6 is fixed to the middle plate portion 12 by engaging with the auxiliary heat source device 26a, the engagement convexity can be obtained simply by rotating the auxiliary heat source device main body 6 with the latching portion 23 as a fulcrum. The part 25a can be engaged with the engaging hole part 26a, and therefore, the lower part of the back side of the auxiliary heat source machine body 6 can be easily and quickly fixed.

  Further, since the engagement receiving portion 26 is formed by cutting and raising a part of the middle plate portion 12, it is advantageous when the engagement receiving portion 26 is manufactured, and an increase in the number of parts is suppressed and the manufacturing cost is reduced. Can be reduced.

  Next, a second embodiment in which the hot water storage and hot water supply apparatus 1 according to the first embodiment is partially changed will be described. In the first embodiment, the engaging portion 25 includes the engaging convex portion 25a, and the engaging receiving portion 26 includes the engaging hole portion 26a. In the second embodiment, the engaging portion 25A includes the slit portion 31. The engagement receiving portion 26 includes a V-shaped slit portion 32.

  That is, as shown in FIG. 7, the engaging portion 25 </ b> A includes a slit portion 31 that is formed at the back end portion of the lower fixing member 22 and has an open back end shape. The opening end portion of the slit portion 31 is formed in a tapered shape. 26A of engagement receiving parts are provided with the V-shaped slit part 32 formed in the cut-and-raised board part 12a of the horizontal attitude | position formed by cutting and raising a part of the intermediate | middle board part 12, and opening toward the opening part side. Yes. A back end recess 32 a is formed at the back end of the V-shaped slit portion 32.

  When the engaging portion 25A is engaged with the engaging receiving portion 26A, the slit portion 31 and the V-shaped slit portion 32 are formed in a cross shape until the bottom portion 31a of the slit portion 31 abuts the back end concave portion 32a. 31 is inserted into the V-shaped slit portion 32. In this way, by engaging the slit portion 31 with the V-shaped slit portion 32, the lower portion on the back side of the auxiliary heat source machine main body 6 can be fixed to the middle plate portion 12. When releasing the fixing of the lower part of the back side of the auxiliary heat source machine body 6, the slit part 31 can be detached from the V-shaped slit part 32 and released simply by rotating the auxiliary heat source machine body 6 forward. .

  As described above, the engagement portion 25A includes the slit portion 31 with the open back end, and the engagement receiving portion 26A includes the V-shaped slit portion 32 that opens toward the opening side. Since the lower part of the back side of the auxiliary heat source machine main body 6 is fixed to the middle plate part 12 by engaging with the letter-shaped slit part 32, the auxiliary heat source machine main body 6 is simply rotated with the latching part 23 as a fulcrum. The slit part 31 can be engaged with the V-shaped slit part 32. Therefore, the back side lower part of the auxiliary heat source machine main body 6 can be fixed easily and quickly. Other configurations, operations, and effects are the same as those in the first embodiment, and thus description thereof is omitted.

An example in which the first and second embodiments are partially changed will be described.
[1] The structures of the engaging portions 25, 25A and the engaging receiving portions 26, 26A of the first and second embodiments are merely examples, and the lower rear portion and the middle plate portion of the auxiliary heat source device main body 6 are shown. Any structure can be appropriately changed as long as the structure can be engaged with and fixed to 12.

[2] In addition, those skilled in the art can implement the present invention by adding various modifications without departing from the spirit of the present invention, and the present invention includes such modifications. It is.

DESCRIPTION OF SYMBOLS 1 Hot water storage hot water supply apparatus 2 Hot water storage tank 3 Auxiliary heat source machine 4 Exterior case 6 Auxiliary heat source machine main body 7 Exhaust port 8 Frame member 9 Outer plate member 11 Upper frame 12 Middle plate part 16 Opening part 23 Latch part 25, 25A Engagement part 25a Engagement convex part 26, 26A Engagement receiving part 26a Engagement hole part 31 Slit part 32 V-shaped slit part

Claims (4)

A hot water storage tank for storing hot water, a combustion-type auxiliary heat source device that heats when the hot water in the hot water storage tank is at a low temperature, the hot water storage tank and the auxiliary heat source device, and a columnar frame member and an outer surface are covered. In a hot water storage and hot water supply apparatus provided with an exterior case composed of an outer plate member,
The outer case is composed of a rectangular parallelepiped in plan view,
An opening for maintenance is provided on one side surface on the short side of the rectangular parallelepiped and an exhaust port of the auxiliary heat source device is provided on one side surface on the long side of the rectangular parallelepiped.
In the auxiliary heat source machine, a hook is provided on the opening side upper part of the auxiliary heat source machine main body, and an engaging part is provided on the lower side lower part of the auxiliary heat source machine main body,
When the auxiliary heat source device is fixed to the frame member, the hooking portion is pivotably hooked to an upper frame that is a part of the frame member, and the hot water storage tank and the auxiliary heat source device are partitioned. A hot water storage and hot water supply apparatus, wherein the engagement portion is engaged with an engagement receiving portion provided on an intermediate plate portion, and an opening side lower portion of the auxiliary heat source machine main body is fixed to the frame member. The engaging portion includes a downwardly protruding engaging convex portion, and the engaging receiving portion includes an engaging hole portion penetrating in the vertical direction.
The hot water storage and hot water supply apparatus according to claim 1, wherein the lower portion of the auxiliary heat source machine main body is fixed to the middle plate portion by engaging the engagement convex portion with the engagement hole portion. The engagement portion includes a slit portion that is open at the back end, and the engagement receiving portion includes a V-shaped slit portion that opens toward the opening side,
The hot water storage and hot water supply apparatus according to claim 1, wherein the lower part of the auxiliary heat source machine main body is fixed to the middle plate part by engaging the slit part with the V-shaped slit part. The hot water storage and hot water supply apparatus according to any one of claims 1 to 3, wherein the engagement receiving portion is formed by cutting and raising a part of the middle plate portion.