JP5489733B2 - Hot water storage tank device - Google Patents

Description

  The present invention relates to a hot water storage tank apparatus that can easily connect a discharge pipe for heating water and a pipe in a main unit.

Some conventional water heaters use a flexible pipe joint in order to allow a displacement between a faucet in a bathroom and a pipe that supplies hot water thereto (see, for example, Patent Document 1).
Moreover, there exists a hot water storage apparatus which can adjust freely the direction which takes out piping by using a flexible joint for a coupling (for example, refer patent document 2).

Utility Model Registration No. 2506006 (page 2-3, Fig. 1) Japanese Utility Model Publication No. 4-4666 (page 7, Fig. 1)

  However, for example, in the conventional technique according to Patent Document 2, the flexible joint can be adjusted in any direction, but the operator inserts the connection pipe from the outside of the unit to the inside and connects to the joint inside the unit. There was a problem that work was necessary and workability was poor.

The present invention has been made in order to solve the above-described problems, and a first object is to obtain a hot water storage tank apparatus that can take out piping in an arbitrary direction by making the piping flexible. It is.
Moreover, the 2nd objective is to obtain the hot water storage tank apparatus which can simplify an operation | work except the operation | work which opens the unit wall which becomes troublesome on a work surface when connecting piping.

The hot water storage tank apparatus according to the present invention includes a hot water storage tank for storing water, a heating means for heating the heating water, a main body unit in which the heating means is installed, and the heating water flowing out from the heating means. A plurality of on- site piping connection pipes that are installed on different wall surfaces of the main unit and are arranged so that one piping port faces the outside of the wall surface. the provided local pipe to any one of the one pipe opening out of said plurality of local pipe connection pipe is connected, the local pipe connection to the local pipe among the plurality of local piping connection pipe is connected The flexible pipe is connected to the other pipe port of the pipe .

  According to the present invention, since the pipe connected locally to the pipe inside the main unit can be connected via the local pipe connecting pipe installed on the wall surface of the main unit, the local pipe can be connected to the inside of the main unit. There is no need to pull in, and the connection work of the local piping can be simplified.

It is a whole block diagram of the hot water storage tank apparatus which concerns on Embodiment 1 of this invention. It is a front view of the main-body unit 2 of the hot water storage tank apparatus which concerns on Embodiment 1 of this invention. It is a water flow path lineblock diagram in the hot water storage tank apparatus concerning Embodiment 1 of the present invention. It is a figure which shows the example of installation of the flexible piping 11 in the hot water storage tank apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the example of installation of the flexible piping 11 in the hot water storage tank apparatus which concerns on Embodiment 1 of this invention. It is a perspective view of the main-body unit 2 of the hot water storage tank apparatus which concerns on Embodiment 2 of this invention.

Embodiment 1 FIG.
(Configuration of hot water storage tank system)
1 is an overall configuration diagram of a hot water storage tank apparatus according to Embodiment 1 of the present invention, FIG. 2 is a front view of a main body unit 2 of the hot water storage tank apparatus, and FIG. 3 is the hot water storage tank. It is a water flow path block diagram in an apparatus. Hereinafter, the configuration of the hot water storage tank apparatus according to the present embodiment will be described with reference to FIGS.

The hot water storage tank 1 is placed on the upper surface plate of the main unit 2 whose outer shape is configured by a rectangular parallelepiped frame 3. On the back side of the main unit 2 (the back side in FIG. 2), a control box 4 including a controller for controlling the entire hot water storage tank apparatus according to the present embodiment is installed. A plate-type heat exchanger 5 and an expansion tank 6 are installed on the side surface inside the main unit 2.
Here, the plate type heat exchanger 5 is installed, but the heat exchanger is not limited to the plate type, and other types of heat exchangers may be installed.

  An auxiliary heater 7 is installed in the main unit 2 and is supported by a bracket fixed to the bottom plate of the main unit 2. The auxiliary heater 7 is connected to the plate heat exchanger 5 by piping. Furthermore, a three-way valve 8 for switching the flow path of the heating water is installed on the front side (front side in FIG. 2) inside the main unit 2. The three-way valve 8 is connected to the auxiliary heater 7 by a heated hot water pipe 25, and is further connected to the hot water storage tank 1 by a heating water discharge pipe 23 extending from the three-way valve 8 to the upper part of the main unit 2. ing. The heating water discharge pipe 23 is connected to a hot water supply heat exchanger 1 a inside the hot water storage tank 1. A flexible piping 11 having flexibility is connected to the outlet on the lower side of the three-way valve 8.

  Moreover, the accumulator 9 is installed in the substantially center part in the main body unit 2, and is connected to the expansion tank 6 by piping. The accumulator 9 is provided with a heating water suction port 24a for sucking heating water. Further, the accumulator 9 is provided with a drain port 9a for draining dirty heating water.

  A water circulation pump 10 is fixed to the bottom plate in the main unit 2. The water circulation pump 10 is connected to an accumulator 9 by piping, and sucks heating water discharged from the accumulator 9. Further, the water circulation pump 10 is connected to the plate heat exchanger 5 by piping, and sends out the discharged heating water to the plate heat exchanger 5.

The arrangement of the units inside the main unit 2 is not limited to the configuration shown in FIGS. 1 and 2 as described above, and may be configured by different arrangements.
The plate heat exchanger 5 and the auxiliary heater 7 correspond to the “heating means” of the present invention.

  In addition, on the left and right side plates and the bottom plate of the main unit 2, local pipe connection pipes 12 having a predetermined length are installed, and are installed through the respective boards. Each of the local pipe connection pipes 12 includes an internal nut 12a on the inner side of the main unit 2 and an outer nut 12b on the outer side of the main unit. These inner nuts 12a and outer nuts 12b can be moved in the longitudinal direction of the on-site pipe connection pipe 12. As shown in FIG. 2, the flexible pipe 11 is connected to, for example, a local pipe connection pipe 12 installed on the bottom plate of the main unit 2 via an internal nut 12 a. And the local piping (not shown) connected with a heating appliance etc. is connected via the external nut 12b of the local piping connection piping 12. FIG.

In addition, although the above-mentioned local piping connection piping 12 is each installed in the left-and-right side plate and bottom plate of the main body unit 2, as shown in FIG. 2, it is not limited to this, It is good also as a structure installed in at least any one instead of the structure installed in a side plate and all the bottom boards.
Moreover, it is good also as a structure attached to the front plate, back plate, or top plate of the main unit 2 as well as the left and right side plates and the bottom plate.

  The hot water storage tank 1 is provided with a domestic water discharge pipe 21, a domestic water suction pipe 22, and a heating water suction pipe 24 along the vertical direction. Of these, the domestic water discharge pipe 21 and the domestic water suction pipe 22 are connected to the inside of the hot water storage tank 1, and the heating water suction pipe 24 through which the domestic water stored in the hot water storage tank 1 circulates is inside the main unit 2. And is connected to the heating water inlet 24a. Moreover, the piping port which goes to the upper side of the water intake piping 24 for heating is connected to heating equipment etc. Further, a pipe branched from the heating water intake pipe 24 is connected to the hot water supply heat exchanger 1 a inside the hot water storage tank 1.

  As described above, the domestic water discharge pipe 21, the domestic water intake pipe 22 and the heating water intake pipe 24 are each installed along the vertical direction of the hot water storage tank 1, but are not limited thereto. It is good also as what is installed by a different direction and form based on the installation place of the heating appliance which is not a thing but the destination of the domestic water, and the destination of the heating water.

(Operation of hot water storage tank system)
Next, the operation of the hot water tank apparatus according to the present embodiment will be described with reference to FIG.
First, about the circulation operation of the water for heating when the three-way valve 8 is switched to the flow path which sends the water for heating from the heating hot water piping 25 to the flexible piping 11 by the controller etc. which were installed in the control box 4 explain. Heating water flowing out from the heating appliance or the like flows through the heating water intake pipe 24 and flows into the accumulator 9. The accumulator 9 separates dirty water from the heating water and discharges it from the drain 9a. Moreover, the expansion tank 6 is connected to the accumulator 9 by piping, and the expansion of water flowing through the expansion tank 6 is absorbed.

  Heating water that has flowed out of the accumulator 9 is sucked into the water circulation pump 10. The water circulation pump 10 sends the sucked heating water toward the plate heat exchanger 5.

  Heating water that has flowed into the plate heat exchanger 5 is heated by heat exchange with the outside air. The heated heating water further flows into the auxiliary heater 7. The auxiliary heater 7 supplementarily heats the water for heating when the temperature rise in the plate heat exchanger 5 is insufficient. Heating water heated by the auxiliary heater 7 circulates through the heated hot water piping 25 and is further connected to the flexible piping 11 via the three-way valve 8 and to the flexible piping 11 via the local piping connection piping 12. The pipes are circulated and sent to the heater.

  Next, the flow operation of the heating water when the three-way valve 8 switches the heating water to the flow path sent from the heating hot water pipe 25 to the heating water discharge pipe 23 by a controller or the like installed in the control box 4 will be described. . The switching of the three-way valve 8 is performed when a heater or the like is not used, or when water for domestic use (shower water or the like) stored in the hot water storage tank 1 is heated.

  The heating water sent out by the water circulation pump 10 is warmed by the plate heat exchanger 5 and the auxiliary heater 7 as described above. The heated heating water flows through the heated hot water pipe 25 and further flows through the heating water discharge pipe 23 via the three-way valve 8 and flows into the hot water supply heat exchanger 1 a in the hot water storage tank 1. Heating water flowing into the hot water supply heat exchanger 1a is heat-exchanged with domestic water in the hot water storage tank 1, and the domestic water is warmed by the heat exchange.

  Thereafter, the heating water flowing out of the hot water supply heat exchanger 1a flows through the heating water intake pipe 24 and flows into the accumulator 9. As described above, the accumulator 9 separates dirty water from the heating water and discharges it from the drain port 9a. Then, the heating water flowing out from the accumulator 9 is sucked into the water circulation pump 10, and is again sent out to the plate heat exchanger 5 by the water circulation pump 10.

Next, the distribution operation of domestic water stored in the hot water storage tank 1 will be described.
Domestic water flowing through the domestic water intake pipe 22 flows into the hot water storage tank 1 and is stored in the hot water storage tank 1. As described above, the domestic water stored in the hot water storage tank 1 is warmed by exchanging heat with the heating water in the hot water supply heat exchanger 1a. And the domestic water stored in the hot water storage tank 1 distribute | circulates the domestic water discharge piping 21, and is used for shower water.

(Installation form of flexible piping 11)
4 and 5 are diagrams showing examples of installation of the flexible piping 11 in the hot water storage tank apparatus according to Embodiment 1 of the present invention. The installation form of the flexible pipe 11 will be described with reference to FIGS. 2, 4, and 5 described above.
In the above-described FIG. 2, the flexible pipe 11 connected to the lower outlet of the three-way valve 8 is connected to the local pipe connection pipe 12 installed on the bottom plate of the main unit 2 via an internal nut 12 a. . Further, since the flexible pipe 11 can be bent in any direction, as shown in FIG. 4, it is connected to an on-site pipe connecting pipe 12 installed on the right side plate of the main unit 2 via an internal nut 12a. can do. Further, as shown in FIG. 5, it can be connected to an on-site piping connection pipe 12 installed on the left side plate of the main unit 2 via an internal nut 12 a.

(Effect of Embodiment 1)
As in the above configuration, the pipe connected to the pipe inside the main unit 2 at the site can be connected via the local pipe connection pipe 12 installed on the wall surface of the main unit 2. It is not necessary to pull in to the inside of 2, and the connection work of local piping can be simplified.
In addition, for example, when a heating appliance or the like is installed below the hot water storage tank apparatus according to the present embodiment, the present embodiment relates to the present embodiment as compared with the conventional technique of drawing a pipe from the upper part of the main unit. Since the hot water storage tank apparatus can connect the local piping to the wall surface of the main unit 2, the length of the piping to the heating appliance or the like can be shortened, and the temperature drop of the heating water can be suppressed.
Furthermore, since the on-site piping connection pipe 12 is installed on at least one of the front, back, side and bottom surfaces of the main unit 2, heating is performed from the main unit 2 of the hot water storage tank device according to the present embodiment. It is possible to connect so that the length of the local piping to be installed up to the position where the equipment is installed is shortened.

In addition, although it is set as the structure provided with the plate-type heat exchanger 5 and the auxiliary heater 7 as a heating means in the hot water storage tank apparatus which concerns on said this Embodiment, it is not limited to this, At least one is provided. Alternatively, other heating means may be provided.
Moreover, although the water stored in the hot water storage tank 1 is water for domestic use, it is not limited to this, For example, it is good also as what stores the water etc. which are used industrially.

Embodiment 2. FIG.
The hot water storage tank apparatus according to the present embodiment will be described focusing on differences from the configuration of the hot water storage tank apparatus according to the first embodiment.

(Configuration of hot water storage tank system)
FIG. 6 is a perspective view of main body unit 2 of the hot water storage tank apparatus according to Embodiment 2 of the present invention.
As shown in FIG. 6, a fixing metal plate 13 is attached so as to extend from the left side plate inside the main unit 2 and to have a substantially horizontal plate surface. The fixing sheet metal 13 is provided with a circular hole, and the local pipe connection pipe 12 is inserted through the hole so that the longitudinal direction thereof substantially coincides with the vertical direction. Nuts 12 c are attached to both ends of the local pipe connection pipe 12. The nut 12c can be moved in the longitudinal direction of the on-site piping connection piping 12.
The fixing sheet metal 13 corresponds to the “fixing means” of the present invention.

  Further, similarly to the first embodiment, a flexible pipe 11 is connected to the lower outlet of the three-way valve 8, and this flexible pipe 11 is connected to the lower pipe port of the above-mentioned local pipe connecting pipe 12. It is bent toward the end and connected to the lower piping port of the on-site piping connection piping 12 through the nut 12c. Other configurations are the same as those of the hot water storage tank apparatus according to the first embodiment.

The fixing sheet metal 13 is attached to the left side plate, but is not limited thereto, and may be attached to other internal wall surfaces.
Further, as a means for fixing the local pipe connection pipe 12, the fixing sheet metal 13 is used, but is not limited thereto, and is fixed using a non-metallic or non-plate-like one. It is good.

(Effect of Embodiment 2)
As in the above configuration, the piping inside the main unit 2 and the piping connected locally are connected to the local piping connecting piping 12 installed on the wall surface of the main unit 2 or the fixing piping 13. Since it can connect via the connection piping 12, it is not necessary to draw in the local piping to the inside of the main body unit 2, and the connection operation of local piping can be simplified.
In addition, for example, when a heating appliance or the like is installed above the hot water storage tank apparatus according to the present embodiment, the local pipe can be connected to the local pipe connection pipe 12 installed on the fixing sheet metal 13. Moreover, the length of piping to a heating appliance etc. can be shortened and the temperature fall of the water for heating can be suppressed.

In addition, although it is set as the structure by which the flexible piping 11 is connected to the lower piping port of the local piping connection piping 12 fixed by the sheet metal 13 for fixation as mentioned above, it is not limited to this, Upper piping The flexible pipe 11 may be connected to the mouth, and the local pipe may be connected to the lower pipe mouth.
Further, as described above, the on-site piping connection pipe 12 is fixed by the fixing metal plate 13 so that the longitudinal direction thereof substantially coincides with the vertical direction. However, the present invention is not limited to this. The pipe connection pipe 12 may be fixed so that the longitudinal direction thereof is an arbitrary direction.

  DESCRIPTION OF SYMBOLS 1 Hot water storage tank, 1a Heat exchanger for hot water supply, 2 Main unit, 3 Frame body, 4 Control box, 5 Plate type heat exchanger, 6 Expansion tank, 7 Auxiliary heater, 8 Three-way valve, 9 Accumulator, 9a Drain port, DESCRIPTION OF SYMBOLS 10 Water circulation pump, 11 Flexible piping, 12 Local piping connection piping, 12a Internal nut, 12b External nut, 12c Nut, 13 Fixing sheet metal, 21 Domestic water discharge piping, 22 Domestic water suction piping, 23 Heating water discharge piping, 24 Heating Water intake pipe, 24a Heating water inlet, 25 Heated hot water pipe.

Claims (6)

A hot water storage tank for storing water,
Heating means for heating water for heating;
A main unit in which the heating means is installed;
A part of a pipe through which the heating water flowing out of the heating means flows, and a flexible pipe having flexibility;
A plurality of on- site piping connection pipes installed on different wall surfaces of the main unit, and arranged so that one piping port faces the outside of the wall surface,
With
Local plumbing to any one of the one pipe opening out of said plurality of local pipe connection pipe is connected,
The hot water storage tank apparatus , wherein the flexible piping is connected to the other piping port of the local piping connection piping to which the local piping is connected among the plurality of local piping connection piping . The main body unit has a rectangular parallelepiped shape,
The hot water storage tank apparatus according to claim 1, wherein the plurality of on- site pipe connection pipes are installed on at least one of a side plate, a bottom plate, and a top plate of the main unit. A hot water storage tank for storing water,
Heating means for heating water for heating;
A main unit in which the heating means is installed;
A part of a pipe through which the heating water flowing out of the heating means flows, and a flexible pipe having flexibility;
A plurality of on- site piping connection pipes fixed by fixing means supported on different wall surfaces of the main unit;
With
Local pipe is connected to any one of the other pipe opening out of said plurality of local pipe connection pipe,
The hot water storage tank apparatus , wherein the flexible piping is connected to the other piping port of the local piping connection piping to which the local piping is connected among the plurality of local piping connection piping . The local pipe connection pipe is fixed by the fixing means so that the longitudinal direction thereof substantially coincides with the vertical direction,
The flexible piping is connected to the piping port on the lower side of the local piping connection piping,
The hot water storage tank apparatus according to claim 3, wherein the local piping is connected to the piping port on the upper side of the local piping connection piping. A three-way valve that is installed in a pipe through which the heating water flowing out from the heating means flows, and switches between sending the heating water flowing out from the heating means to a heating appliance or the like, or sending it to the hot water storage tank;
Among outlet of the three-way valve, the hot water storage tank according to claim 1, wherein said that the flexible pipe is connected to the outlet sending the heating water to the heating appliances or the like . A nut capable of moving in the longitudinal direction of the on-site piping connection piping,
The local piping, hot water storage tank according to claim 1, characterized in that it is connected through the nut to the local pipe connection pipe.

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