JP5683837B2 - Hot water tank - Google Patents

Description

  The present invention relates to a hot water tank.

FIG. 2 of Patent Document 1 discloses a conventional hot water tank. The hot water tank includes a hot water tank main body and a heat retaining member attached so as to cover the outer surface of the hot water tank main body. The hot water tank body, an inlet of the water flowing into an outlet port for discharging the hot water stored therein and heating the heater mounting part such as al is Ru attached is formed. A heater is disposed inside the hot water tank main body, and water flowing into the hot water tank can be stored and heated. Moreover, the warm water stored inside the warm water tank main body can be discharged to the outside.

  The heat insulating member is formed of a heat insulating member having a low thermal conductivity attached to the upper part of the hot water tank and a heat insulating member attached to the lower part of the hot water tank and having a heat conductivity larger than that of the upper heat insulating member. . The hot water tank can secure hot water at a predetermined temperature while reducing power consumption by reducing the amount of heat released from the upper part.

JP 2008-101833 A

  However, in the conventional warm water tank of patent document 1, the effort which affixes a heat retention member on the outer surface of a warm water tank main body is required. In particular, in the portion where the inflow port or the like is formed, it is necessary to attach the heat retaining member while avoiding the inflow port or the like, and thus further labor is required.

  The present invention has been made in view of the above-described conventional situation, and solves the problem of providing a hot water tank in which a heat retaining member that can cover most of the outer surface of the hot water tank body can be easily attached. It should be a challenge.

The hot water tank of the first invention is a hot water tank in which a heater is arranged inside, the water flowing into the inside is stored and warmed, and the hot water flows out to the outside,
A first case having an open end and a second case having an open end are provided, and the end of the first case and the end of the second case are joined and arranged inside and outside. A hot water tank body in which the mounting part of the part is formed on the outer surface;
A portion corresponding to the mounting portion is opened, an inner surface is formed along the shape of the outer surface of the first case, and the first portion is mounted after the component is mounted on the mounting portion of the hot water tank body . A first heat retaining member fixed to the outer surface of the case;
A portion corresponding to the mounting portion is opened, an inner surface is formed along the shape of the outer surface of the second case, and the second portion is mounted after the component is mounted on the mounting portion of the hot water tank body . And a second heat retaining member fixed to the outer surface of the case.

  In this hot water tank, the hot water tank main body is divided into a first case and a second case, a first heat retaining member is attached to the first case, and a second heat retaining member is attached to the second case. For this reason, most of the hot water tank body can be covered with the first heat retaining member and the second heat retaining member.

  Moreover, since the 1st heat retention member is formed in the inner surface along the shape of the outer surface of a 1st case, and the part corresponding to an attachment part is opening, even if an unevenness | corrugation is formed in the 1st case It can be easily attached to the first case. Further, the second heat retaining member is also formed on the inner surface along the shape of the outer surface of the second case, and the portion corresponding to the attachment portion is opened, so that even if the second case has irregularities, It can be easily attached to the second case.

  Furthermore, even if the first case and the second case are joined with a shift, the first heat retaining member is fixed to the outer surface of the first case, and the second heat retaining member is fixed to the outer surface of the second case. The first heat retaining member and the second heat retaining member can be reliably attached to the hot water tank main body without affecting the fixing of the first heat retaining member and the second heat retaining member.

Therefore, the warm water tank of the first invention can be easily attached with a heat retaining member that can cover most of the outer surface of the warm water tank body.

  The attachment portion may be an inflow port to which an upstream water supply passage is attached in communication, an outflow port to which a downstream water supply passage is attached in communication, or a heater attachment portion to which the heater is attached. In this case, regardless of before and after attaching the first heat retaining member and the second heat retaining member to the hot water tank body, the upstream water supply channel is attached to and detached from the inlet, the downstream water channel is attached to and detached from the outlet, or The heater can be attached to and detached from the heater mounting portion. For this reason, assembly and maintenance of a hot water tank can be performed easily.

  The first heat retaining member or the second heat retaining member may be formed of a flame retardant in the vicinity of the heater mounting portion. In this case, the hot water tank body can be covered with the heat retaining member up to the vicinity of the heater mounting portion. For this reason, the heat retention of a hot water tank can be improved and power consumption can also be reduced.

  An intermediate heat retaining member that connects an end portion of the first heat retaining member and an end portion of the second heat retaining member may be provided. In this case, the outer surface of the hot water tank body exposed between the first heat retaining member and the second heat retaining member can be covered with the intermediate heat retaining member. For this reason, the heat retention of a hot water tank can further be improved and power consumption can also be reduced.

  The first heat retaining member and the second heat retaining member may be formed of a hard foam material. In this case, since the first heat retaining member and the second heat retaining member have shape retaining properties, the first heat retaining member or the second heat retaining member can be more easily attached to each of the first case and the second case.

The warm water tank of the second invention is a warm water tank in which a heater is arranged inside, the water flowing into the interior is stored and warmed, and the warm water is discharged outside,
A first case having an open end and a second case having an open end are provided, and the end of the first case and the end of the second case are joined and arranged inside and outside. A hot water tank body in which the mounting part of the part is formed on the outer surface;
A portion corresponding to the mounting portion is opened, an inner surface is formed along the shape of the outer surface of the first case, and a first heat retaining member fixed to the outer surface of the first case;
A portion corresponding to the mounting portion is opened, an inner surface is formed along the shape of the outer surface of the second case, and a second heat retaining member fixed to the outer surface of the second case is provided. And
The first heat retaining member or the second heat retaining member is provided with a notch through which an energization wiring connected to the heater passes .
In this case, since the notch serves as a guide for the energization wiring, it is possible to easily lay the energization wiring. In addition, by passing the energization wiring through the notch, it is possible to prevent the energization wiring from being sandwiched between the heat retaining member and other components.

It is a perspective view which shows the state in which the warm water tank of Example 1 was integrated in the flush toilet bowl. It is a disassembled perspective view of the hot water tank of Example 1. FIG. It is a perspective view of the warm water tank of Example 1. FIG. It is a perspective view of the warm water tank of Example 2. FIG.

  Embodiments 1 and 2 embodying the hot water tank of the present invention will be described with reference to the drawings.

<Example 1>
The hot water tank 10 of Example 1 is incorporated in the flush toilet 1 as shown in FIG. The flush toilet 1 includes a toilet main body 2 and a cleaning tank 3 for cleaning the toilet placed on the rear upper surface of the toilet main body 2. The cleaning tank 3 is covered with a tank cover 4. The tank cover 4 pivotally supports a toilet seat 5 and a toilet lid 6 at the lower front portion. The tank cover 4 is provided with a hand-washing basin 8 having a hand-washing spout 7 at its upper end.

  The hot water tank 10 is in the tank cover 4 and is housed in a space formed by recessing the lower portion of the cleaning tank 3. The hot water tank 10 communicates with the cleaning nozzle 9 of the local cleaning device that communicates with the downstream side, and can supply hot water to the cleaning nozzle 9. The hot water tank 10 communicates with a water supply source F on the upstream side through a valve unit 20, a water supply pipe S and a stop cock V. The cleaning tank 3 is communicated with an upstream water supply source F through a connecting pipe 3A, a valve unit 20, a water supply pipe S, and a stop cock V.

  As shown in FIGS. 2 and 3, the hot water tank 10 includes a hot water tank body 13 formed of a first case 11 and a second case 12, and a first heat insulating material fixed to the outer surface of the first case 11. 14 and a second heat insulating material 15 fixed to the outer surface of the second case 12.

The first case 11 is a hollow body having an upper surface portion and a side surface portion, and having a lower end portion 11A that is an end portion opened downward. Lower end 11A of the first case 11 is formed in a flange shape outer edges protrude outward. The second case 12 is a hollow body having a lower surface portion and a side surface portion and having an upper end portion 12A that is an end portion opened upward. End 12A on the second case 12 is formed in a flange shape outer edges protrude outward. The end portion 12A on the lower end portion 11A and the second case 12 of the first case 11 is formed in a symmetrical shape. Thus the first case 11 formed in the second case 12 are integrated by welding the upper surface of the upper end portion 12A of the lower surface and the second case 12 of the lower end portion 11A of the first case 11, A hot water tank body 13 is formed.

  An outlet 11 </ b> B and a sensor attachment portion 11 </ b> C are formed on the upper surface portion of the first case 11. An upstream end of a water supply pipe 40 that is disposed outside the hot water tank main body 13 and forms a downstream water supply passage is attached to the outlet 11B. The downstream end of the water supply pipe 40 is attached to the cleaning nozzle 9 via a valve provided on the flow path to the cleaning nozzle 9. An upper end portion of a water level sensor (not shown) disposed inside the hot water tank main body 13 is attached to the sensor attachment portion 11C. The water level sensor is connected to a control device (not shown) via a signal line 11L. This water level sensor detects whether or not the inside of the hot water tank body 13 is full, and controls the water supply to the hot water tank body 13. A hook portion 11 </ b> D capable of locking a current-carrying wiring (power line) 34 connected to one end portion of a heater 31 to be described later is formed on the side surface portion on the front side of the first case 11.

  On the left side surface portion of the second case 12, a cylindrical valve mounting portion 12 </ b> C in which a screw hole is provided in the inlet 12 </ b> B and the shaft core is formed. A second outlet 21 of the valve unit 20 that is disposed outside the hot water tank main body 13 and forms an upstream water supply passage is inserted and attached to the inlet 12B.

  The valve unit 20 includes a first water supply pipe 23 extending in the vertical direction, and a second water supply pipe 24 branched from an intermediate portion of the first water supply pipe 23 and extending in the vertical direction. The first water supply pipe 23 constitutes a part of the water supply path to the cleaning tank 3. The second water supply pipe 24 constitutes a part of the water supply path to the hot water tank 10.

  An inflow port 22 to which the downstream end of the water supply pipe S is connected is provided at the lower part of the side surface of the first water supply pipe 23. The upper end opening of the first water supply pipe 23 forms a first outlet 23A connected to the connecting pipe 3A. In the first water supply pipe 23, a strainer (not shown) integrated with a lid member 23B screwed into the lower end opening is accommodated.

  An open / close valve 25 having an electromagnetic pilot valve 25A is connected to the upper end portion of the second water supply pipe 24, and a second outlet 21 is formed downstream thereof. As the electromagnetic pilot valve 25A is opened and closed by a signal from a control device (not shown), the on-off valve 25 can be opened and closed. In this way, water supply from the second outlet 21 to the hot water tank body 13 is controlled. In the second water supply pipe 24, a strainer (not shown) integrated with a lid member 24A screwed into the lower end opening is accommodated.

  The valve unit 20 has a mounting piece 26 formed at a position corresponding to the valve mounting portion 12 </ b> C of the second case 12. A through-hole through which the screw B is inserted is provided at the tip of the mounting piece 26. The valve unit 20 inserts the second outlet 21 into the inlet 12B formed in the second case 12, and screws the screw B from the through hole of the mounting piece 26 into the valve mounting portion 12C, thereby It is attached.

  A heater mounting portion 12 </ b> D is formed on the side surface portion on the front side of the second case 12. A heater unit 30 is attached to the heater attachment portion 12D. The heater unit 30 includes a heater 31 bent in a U shape, a metallic heater substrate portion 32 to which both ends of the heater 31 are fixed, and a thermostat 33 to which the outer surface of the heater substrate portion 32 is attached. ing. An opening for inserting the heater 31 into the hot water tank main body 13 is formed in the heater mounting portion 12D. After the heater 31 is inserted into the hot water tank main body 13 from the opening, the heater substrate portion 32 is connected to the screw B. Thus, the second case 12 is fixed. Heat is transmitted from the heater 31 to the heater substrate 32. For this reason, when the heater substrate part 32 becomes equal to or higher than the set temperature, the thermostat 33 is activated to cut off the power supply to the heater 31.

  The second case 12 has a fixing piece 12E for fixing the hot water tank 10 formed to protrude outward from three portions of the side surface portion. A through hole is formed at the tip of each fixed piece 12E. The hot water tank 10 is fixed to the base plate by screwing screws into the base plate fixed to the toilet body 2 (not shown) from the through holes of the respective fixing pieces 12E. A cylindrical drainage portion 12 </ b> F extending downward is formed on the lower surface portion of the second case 12. The lower end opening of the drainage portion 12F is sealed by screwing the lid member 12G.

  The 1st heat retention member 14 and the 2nd heat retention member 15 are formed from the hard foaming material which has a flame retardance. The first heat retaining member 14 is formed in a similar shape that is slightly larger than the outer surface above the lower end portion 11 </ b> A of the first case 11. That is, the inner surface of the first heat retaining member 14 is formed along the shape of the outer surface of the first case 11. The thickness of the side surface portion of the first heat retaining member 14 is substantially the same as the width of the lower end portion 11A of the first case 11 protruding outward.

  The first heat retaining member 14 is formed with a first opening 14A at a portion corresponding to the outlet 11B and the sensor mounting portion 11C, and a second opening 14B at a portion corresponding to the hook portion 11D. The first opening 14 </ b> A is formed to open from the upper surface portion on the front right side of the first heat retaining member 14 to the upper end portions of the side surfaces on the right side and the front side. The second opening 14B is formed to open from the lower end of the front side surface portion of the first heat retaining member 14 to the middle position in the vertical direction.

  Further, the first heat retaining member 14 is formed with an elongated cutout portion 14 </ b> C through which an energization wiring (power line) 34 connected to the heater 31 passes. The notch portion 14C is an elongated shape on the left side of the first heat retaining member 14 extending from the upper end portion of the front side surface portion to the upper end portion of the rear side surface portion in the front-rear direction. Is formed.

The second heat retaining member 15 is formed in a similar shape that is slightly larger than the outer surface below the upper end 12 </ b> A of the second case 12. That is, the inner surface of the second heat retaining member 15 is formed along the shape of the outer surface of the second case 12. The thickness of the side portion of the second heat insulating member 15 is substantially the same as the width of the end portion 12A on the second case 12 protrudes outward.

  Further, the second heat retaining member 15 has a notch-shaped third opening 15A in a portion corresponding to the inlet 12B and the valve mounting portion 12C, and a notched fourth opening 15B in a portion corresponding to the heater mounting portion 12D. A sixth opening 15D is formed in a portion corresponding to the notch-shaped fifth opening 15C and a drainage portion 12F in a portion corresponding to the fixed piece 12E formed in the right rear corner portion of the second case 12.

  The third opening 15 </ b> A is formed so as to open from the upper end to the vicinity of the lower end of the left side surface portion of the second heat retaining member 15. The fourth opening portion 15B is formed to open from the upper end to the vicinity of the lower end of the second heat retaining member 15 from the front side of the right side surface portion to the front side of the left front corner portion of the front side surface portion. The fifth opening portion 15 </ b> C is formed to open from the upper end of the side surface portion of the right rear corner portion of the second heat retaining member 15 to the middle position in the vertical direction. The sixth opening 15D is formed to open to the left rear corner of the lower surface.

  The first heat retaining member 14 and the second heat retaining member 15 configured as described above have a water level sensor attached to the sensor attachment portion 11C of the hot water tank body 13, and the valve unit 20 attached to the inlet 12B and the valve attachment portion 12C. Further, after the heater unit 30 is attached to the heater attachment portion 12D, it is attached to the hot water tank body 13. At this time, the first heat retaining member 14 is attached to the first case 11, and the second heat retaining member 15 is attached to the second case 12. It can be covered with the heat retaining member 15.

  Since the first heat retaining member 14 is formed of a hard foam material, the first heat retaining member 14 has a shape retaining property and is formed on the inner surface along the shape of the outer surface of the first case 11. Since the portions corresponding to the attachment portion 11C and the hook portion 11D are open, it can be easily attached to the first case 11. The second heat retaining member 15 is also formed of a hard foam material, so that it has shape retention and is formed on the inner surface along the shape of the outer surface of the second case 12, and the inlet 12B. Since the portions corresponding to the valve mounting portion 12C, the heater mounting portion 12D, and the fixed piece 12E are open, it can be easily mounted to the second case 12.

  Even if the joining of the first case 11 and the second case 12 is deviated, the first heat retaining member 14 is fixed to the outer surface of the first case 11, and the second heat retaining member 15 is the outer surface of the second case 12. Therefore, the first heat retaining member 14 and the second heat retaining member 15 can be securely attached to the hot water tank main body 13 without affecting the fixing of the first heat retaining member 14 and the second heat retaining member 15.

  Therefore, the warm water tank 10 of Example 1 can easily attach the heat retaining members (the first heat retaining member 14 and the second heat retaining member 15) that can cover most of the outer surface of the warm water tank body 13.

  After the first heat retaining member 14 and the second heat retaining member 15 are attached to the hot water tank body 13, the energization wiring (power line) 34 connected to the heater 31 is passed through the notch portion 14C, and the electromagnetic pilot valve 25A Connect to terminal. Thus, since the notch portion 14C serves as a guide for the energizing wiring (power line) 34, the laying of the energizing wiring (power line) 34 can be facilitated. Further, by passing the energization wiring (power line) 34 through the notch 14C, the energization wiring (power line) 34 is provided between the first heat retaining member 14 and the lower surface of the cleaning tank 3 without increasing the handling. It is possible to prevent pinching. Thereafter, the upstream end of the water supply pipe 40 is attached to the outlet 11B.

  In this hot water tank 10, the upstream end of the water supply pipe 40 is attached to and detached from the outlet 11B regardless of whether the first heat retaining member 14 and the second heat retaining member 15 are attached to the hot water tank main body 13, or the sensor attaching portion 11C. The water level sensor can be attached / detached, the valve unit 20 can be attached / detached to / from the inlet 12 and the valve attaching part 12C, and the heater unit 30 can be attached / detached to / from the heater attaching part 12D. For this reason, the assembly and maintenance of the hot water tank 10 can be easily performed.

  Moreover, since the 2nd heat retention member 15 is formed from the flame-retardant foaming material, the 2nd heat retention member 15 can cover the 2nd case 12 to the vicinity of heater attachment part 12D. For this reason, the heat retention of the hot water tank 10 can be improved, and power consumption can also be reduced.

<Example 2>
As shown in FIG. 4, the hot water tank 110 according to the second embodiment includes a belt-shaped intermediate heat retaining member 16 that connects the end of the first heat retaining member 14 and the end of the second heat retaining member 15. Other configurations are the same as those of the hot water tank 10 of the first embodiment, and the same reference numerals are given to the same configurations, and detailed description thereof is omitted.

  In the hot water tank 110 according to the second embodiment, the lower end portion 11A of the first case 11 and the upper end portion 12A of the second case 12 exposed between the first heat retaining member 14 and the second heat retaining member 15 are also covered by the intermediate heat retaining member 16. be able to. For this reason, the heat retaining property of the hot water tank 110 can be further improved, and the power consumption can be further reduced.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Example 1 and 2, although the 1st heat retention member and the 2nd heat retention member were formed with the foam material which has a flame retardance, it may not be flame retardance. In this case, it is preferable that the opening of the heat retaining member corresponding to the heater mounting portion is formed wide. Further, only the vicinity of the heater mounting portion may be made flame retardant.
(2) In Example 1 and 2, although the 1st heat retention member and the 2nd heat retention member were formed with the hard foam material, the foam material which has a softness | flexibility may be sufficient.
(3) In Examples 1 and 2, the first heat retaining member is provided with the elongated cutout portion through which the energization wiring (power line) connected to the heater passes. However, the second heat retaining member has the energization wiring ( You may provide the elongate notch part which an electric power line passes. Moreover, the notch part may be formed in groove shape.
(4) In the first and second embodiments, the hot water tank main body is formed by the first case and the second case that are divided vertically, but the hot water tank main body may be formed by two cases that are divided by right and left. In this case, the outer surface of the hot water tank body is covered with two heat retaining members attached from the left and right sides of the hot water tank body.

  The present invention is applicable to a hot water tank for a local cleaning device.

DESCRIPTION OF SYMBOLS 10 ... Warm water tank 11 ... 1st case 11A ... Lower end part (of 1st case) 12 ... 2nd case 12A ... (Upper part of 2nd case) 11B, 11C, 12B, 12C, 12D ... Attachment part (11B ... flow (Outlet, 11C: Sensor mounting portion, 12B: Inlet, 12C: Valve mounting portion, 12D: Heater mounting portion)
DESCRIPTION OF SYMBOLS 13 ... Hot water tank main body 14 ... 1st heat retention member 14C ... Notch 15 ... 2nd heat retention member 16 ... Intermediate | middle heat retention member 31 ... Heater

Claims (6)

A warm water tank that arranges a heater inside, stores and warms the water flowing into the inside, and discharges the warm water to the outside.
A first case having an open end and a second case having an open end are provided, and the end of the first case and the end of the second case are joined and arranged inside and outside. A hot water tank body in which the mounting part of the part is formed on the outer surface;
A portion corresponding to the mounting portion is opened, an inner surface is formed along the shape of the outer surface of the first case, and the first portion is mounted after the component is mounted on the mounting portion of the hot water tank body. A first heat retaining member fixed to the outer surface of the case;
A portion corresponding to the mounting portion is opened, an inner surface is formed along the shape of the outer surface of the second case, and the second portion is mounted after the component is mounted on the mounting portion of the hot water tank body. A second heat retaining member fixed to the outer surface of the case ,
The opening end of the first heat retaining member is in contact with the flange-shaped end portion of the first case, and the opening end of the second heat retaining member is in contact with the flange-shaped end portion of the second case. A warm water tank.   The mounting portion is an inflow port to which an upstream water supply passage is attached in communication, an outflow port to which a downstream water supply passage is attached in communication, or a heater attachment portion to which the heater is attached. Item 1. A hot water tank according to item 1.   The warm water tank according to claim 1 or 2, wherein the first heat retaining member or the second heat retaining member is formed of a flame retardant material in the vicinity of the heater mounting portion.   The hot water tank according to any one of claims 1 to 3, further comprising an intermediate heat retaining member that connects an end portion of the first heat retaining member and an end portion of the second heat retaining member.   The hot water tank according to any one of claims 1 to 4, wherein the first heat retaining member and the second heat retaining member are formed of a hard foam material. A warm water tank that arranges a heater inside, stores and warms the water flowing into the inside, and discharges the warm water to the outside.
A first case having an open end and a second case having an open end are provided, and the end of the first case and the end of the second case are joined and arranged inside and outside. A hot water tank body in which the mounting part of the part is formed on the outer surface;
A portion corresponding to the mounting portion is opened, an inner surface is formed along the shape of the outer surface of the first case, and a first heat retaining member fixed to the outer surface of the first case;
A portion corresponding to the mounting portion is opened, an inner surface is formed along the shape of the outer surface of the second case, and a second heat retaining member fixed to the outer surface of the second case ,
The opening end of the first heat retaining member is in contact with the flange-shaped end portion of the first case, and the opening end of the second heat retaining member is in contact with the flange-shaped end portion of the second case ;
The hot water tank, wherein the first heat retaining member or the second heat retaining member is provided with a notch portion through which an energization wiring connected to the heater passes.

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