JP2011038688A - Storage water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage water heater capable of easily installing a hot water storage tank unit even in a narrow place and being easily check and repaired. <P>SOLUTION: In configuring the storage water heater provided with the hot water storage tank unit 50 having a pipe connecting part 42 for connecting an external pipe, in an outer case 30 receiving a hot water storage tank 40, the pipe connecting part is disposed on a bottom part 10 of the outer case, a skirt part SP covering the entire bottom part and the pipe connecting part from a side part to conceal the pipe connecting part and its periphery, is disposed on a barrel part 15 between the bottom part and a top panel part 20, and a front panel part 11 capable of being opened to expose the pipe connecting part, is included. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a hot water storage type water heater.

  In a hot water storage hot water supply apparatus that includes a hot water storage tank unit in which a hot water storage tank is housed in an exterior case and supplies hot water stored in the hot water storage tank to a predetermined hot water supply destination through a hot water supply pipe line, for example, a hot water storage tank unit described in Patent Document 1 As shown in the figure, the front side at the bottom of the exterior case is formed one step higher than the back side, and a pipe in the hot water storage tank unit (hereinafter referred to as “internal pipe”) and a pipe outside the unit (hereinafter referred to as “inside pipe”) are formed on the bottom on the front side. A pipe connection portion is provided for connection to an “external pipe”. In addition, after connecting the external piping to the above-mentioned piping connection portion, to improve the design of the hot water storage tank unit and to protect the external piping from external force, wind and rain, ultraviolet rays, etc. A cosmetic cover that obscures the skin is removably attached to the exterior case.

JP 2004-144437 A

  However, in conventional hot water storage type hot water heaters, the external cover must be attached from the front side of the outer case after the external pipe is connected to the pipe connection part and fixed from the side, so the hot water storage tank unit is installed especially in a narrow area. In the case of installation, it is often necessary to perform the mounting operation in an unreasonable posture without securing a sufficient working space for mounting the decorative cover. Also, when inspecting and repairing a hot water tank unit, it is often necessary to remove the decorative cover to expose the pipe connection part, so the hot water tank unit installed in a narrow area is also inspected and repaired. I often have to work in an unreasonable posture.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hot water storage type hot water heater that can easily obtain a hot water storage tank unit that can be easily installed, inspected, and repaired even in a small area.

  The hot water storage type water heater of the present invention is a hot water storage type water heater provided with a hot water storage tank unit provided with a pipe connection part for connecting an external pipe to an outer case containing a hot water storage tank, the outer case being connected to a pipe A bottom part provided with a part, a skirt part for covering the whole of the bottom part and the pipe connection part from the side to conceal the pipe connection part and its periphery, and forming a storage space for the hot water storage tank above the bottom part It has a hollow body part and a top plate part covering the upper end side of the body part, and the body part includes a front panel part that can be opened and closed until the pipe connection part is exposed.

  According to the present invention, since the decorative cover used in the conventional hot water storage type water heater is not required, it is easy to provide a hot water storage type water heater that is easy to install, inspect, and repair the hot water storage tank unit even in a small area. become.

1 is a perspective view schematically showing an example of a hot water storage type water heater of the present invention. It is a perspective view which shows roughly the external appearance of the hot water storage tank unit in FIG. It is sectional drawing which shows schematically the engaging location of the front panel part and top plate part which comprise an exterior case with the hot water storage tank unit in FIG. It is a front view which shows roughly the internal structure of the hot water storage tank unit of FIG. It is a left view which shows roughly the internal structure of the hot water storage tank unit of FIG. It is a perspective view which shows roughly the front panel part which comprises an exterior case with the hot water storage tank unit of FIG. It is a perspective view which shows roughly the right side panel part which comprises an exterior case with the hot water storage tank unit of FIG. It is a horizontal sectional view which shows roughly the hot water storage tank unit of FIG. It is the enlarged view to which a part of FIG. 8 was expanded. It is another horizontal sectional view which shows the hot water storage tank unit of FIG. 2 schematically. It is the enlarged view to which a part of FIG. 10 was expanded. It is a perspective view which shows a mode when a front panel part is 1st open state by the hot water storage tank unit of FIG. It is a side view which shows a mode when the front panel part is 1st open state by the hot water storage tank unit of FIG. It is a front view which shows a mode when a front panel part is 1st open state by the hot water storage tank unit of FIG. It is a perspective view which shows a mode when the front panel part is 2nd open state by the hot water storage tank unit of FIG. It is a side view which shows a mode when the front panel part is 2nd open state by the hot water storage tank unit of FIG. It is a front view which shows a mode when a front panel part is 2nd open state by the hot water storage tank unit of FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a hot water storage type water heater of the present invention will be described in detail with reference to the drawings. In addition, the hot water storage type water heater of the present invention is not limited to the following form.

  FIG. 1 is a perspective view schematically showing an example of a hot water storage type water heater of the present invention. A hot water storage type water heater 60 shown in the figure includes a heat pump unit 1, a hot water storage tank unit 50, and a remote controller (not shown), and hot water boiled by the heat pump unit 1 is stored in a hot water storage tank (see FIG. (Not shown) is temporarily stored and supplied from here to a predetermined hot water supply destination.

  The heat pump unit 1 includes a refrigeration cycle unit (not shown), and a radiator in the refrigeration cycle unit is used as a heat exchanger for boiling (not shown) to supply water supplied from the hot water storage tank unit 50. Boil in hot water. The hot water boiled by the heat pump unit 1 is returned to the hot water storage tank in the hot water storage tank unit 50 and stored in the hot water storage tank.

  The hot water storage tank unit 50 includes an exterior case 30 and three support legs 35 attached to the bottom of the exterior case 30 (only two support legs 35 and 35 appear in FIG. 1). . The exterior case 30 includes a hot water storage tank, an internal pipe connected to the external hot water storage tank, functional parts such as valves and sensors provided in the internal pipe, a control unit for controlling the operation of the functional parts, Piping connection for connecting piping and external piping, internal wiring for connecting the control unit to controlled devices, sensors, etc., wiring connection for connecting external wiring internally (both not shown), etc. Contained. Further, at the lower part on the front side of the outer case 30, only the front side at the bottom of the outer case 30 is recessed from the lower side to the upper side, and a concave drawing / drawing space LS is formed. .

  An external pipe connected to the hot water storage tank unit 50 includes a water supply pipe 51 for supplying water from a water source such as a water supply (not shown) to the hot water storage tank, and water stored in the hot water storage tank in the heat pump unit 1. A heat pump forward pipe 52 for supplying to the boiling heat exchanger, a heat pump return pipe 53 for supplying hot water boiled by the boiling heat exchanger to the hot water storage tank, and hot water and water supply piping in the hot water storage tank A hot water supply pipe 54 for supplying hot water mixed with water from 51 and adjusted to a predetermined temperature to a hot water supply destination such as a faucet 65 is included. Each of the water supply pipe 51 and the heat pump return pipe 53 is drawn into the lead-in / draw-out space LS and connected to the pipe connection portion in the exterior case 30, and each of the heat pump forward pipe 52 and the hot water supply pipe 54 is It is drawn out of the exterior case 30 through the drawing / drawing space LS from the pipe connection portion.

  On the other hand, the external wiring connected to the hot water storage tank unit 50 includes a power supply wiring 56 for supplying electric power from an external power source to the hot water storage tank unit 50, electric power supplied to the hot water storage tank unit 50, and a control unit in the outer case 30. Power line 57 for heat pump that transmits the signal from the heat pump unit 1, power line for remote controller (not shown) that transmits the power supplied to the hot water storage tank unit 50 and the signal from the control unit in the exterior case 30 to the remote controller, etc. Is included. The power supply wiring 56 is drawn into the outer case 30 through the lead-in / draw-out space LS and connected to the wiring connection portion in the outer case 30. Each of the heat pump power line 57 and the remote controller power line is It is drawn out of the outer case 30 from the wiring connection portion through the drawing / drawing space LS.

  Each of the external piping and the external wiring drawn into the exterior case, and each of the external piping and the external wiring drawn out to the outside of the exterior case 30 are embedded in the ground, for example, depending on the installation location of the hot water storage tank unit 50. Or, it is laid on the installation surface of the hot water storage tank unit 50.

  The hot water storage type water heater 60 provided with the heat pump unit 1 and the hot water storage tank unit 50 described above is characterized in that the outer case 30 is configured to be openable and closable so that a decorative cover does not have to be attached. Therefore, the structure of the hot water storage tank unit 50 will be described in detail below with reference to FIGS. First, the outer shell structure of the hot water storage tank unit 50 will be described with reference to FIGS. 2 and 3, and then the internal structure of the hot water storage tank unit 50 will be described with reference to FIGS. The opening / closing structure of the exterior case 30 will be described with reference to FIG.

  2 is a perspective view schematically showing the appearance of the hot water storage tank unit in FIG. 1, and FIG. 3 is a diagram showing the relationship between the front panel portion and the top plate portion constituting the outer case of the hot water storage tank unit in FIG. It is sectional drawing which shows a joint location roughly.

  As shown in FIG. 2, the exterior case 30 of the hot water storage tank unit 50 has a bottom portion 10, a trunk portion 15, and a top plate portion 20. The bottom portion 10 has a shape in which the front side region 10a of the outer case 30 is formed one step higher than the rear side region 10b, and a dent 10c is formed between the region 10a and the region 10b. Has been.

  The body portion 15 includes a front panel portion 11 disposed on the front surface side of the outer case 30, a right side panel portion 12 serving as a right side wall in the outer case 30, and a left side panel serving as a left side wall in the outer case 30. This is a hollow body having a portion 13 and a back panel portion 14 that becomes a rear wall of the exterior case 30. The trunk portion 15 covers the entire bottom portion 10 and the above-described pipe connection portion (not shown) from the side, and is below the front side region 10 a in the bottom portion 10, and a recessed portion 10 c in the bottom portion 10. In addition, a skirt portion SP that defines the above-described drawing / drawing space LS is formed, and a storage space SS for the hot water storage tank is formed together with the bottom portion 10 above the rear side region 10b in the bottom portion 10.

  The front panel portion 11 constituting the body portion 15 includes a main panel portion 11a that functions as a front wall in the exterior case 30, and a sub-panel portion 11b that is attached to the upper end side of the main panel portion 11a and projects on the top plate portion 20. Are engaged with the side panel portions 12 and 13 so as to be slidable in the vertical direction. An opening / closing type operation window portion 11w that protects an operation switch (not shown) disposed in the exterior case 30 and two insertion holes for inserting a fixing tool 31 such as a screw (not shown in FIG. 2). ) Is provided in the main panel portion 11a. In FIG. 2, the front panel unit 11 is closed, and the front panel unit 11 includes two fixtures 31, 31, specifically, screws (hereinafter referred to as “screws 31”) on the front side in the bottom 10. The region 10a is fixed. On the other hand, the side panel parts 12 and 13 and the back panel part 14 are connected to each other by a fixing tool (not shown) such as a screw and are fixed to the bottom part 10.

  The top plate portion 20 covers the upper end side of the trunk portion 15. As shown in FIG. 3, the top plate portion 20 covers the upper end side of the trunk portion 15 (see FIG. 2) leaving a gap G on the main panel portion 11 a side of the front panel portion 11. By leaving the gap G, it becomes easy to slide the front panel portion 11 in the vertical direction. At the end of the top panel portion 20 on the main panel portion 11a side, rainwater can be prevented from entering the exterior case 30 even when the hot water storage tank unit 50 (see FIG. 2) is installed outdoors. The overhanging portion 20a extending in the height direction of the exterior case 30 is formed. When the front panel portion 11 is closed, the sub-panel portion 11b projects rearward from the projecting portion 20a with the sub-panel portion 11b in contact with the upper end surface of the projecting portion 20a, and the gap G and the side panel portions 12, 13 (FIG. 2). The upper end portion on the front side in the reference) is covered, and rainwater intrusion into the outer case 30 is prevented.

  4 is a front view schematically showing the internal structure of the hot water storage tank unit of FIG. 2, and FIG. 5 is a left side view schematically showing the internal structure of the hot water storage tank unit of FIG. In FIG. 4, the front panel portion 11 (see FIG. 2) of the exterior case 30 is removed, and in FIG. 5, the left side panel portion 13 (see FIG. 2) of the exterior case 30 is removed. 4 and 5, internal piping, each functional component, and back wiring in the hot water storage tank unit 50 are not shown. Also, external piping and external wiring are not shown. Among the constituent elements shown in FIG. 4 or FIG. 5, those common to the constituent elements shown in FIG. 2 or FIG. 3 are given the same reference numerals as those used in FIG. 2 or FIG. Is omitted.

  4 and 5, a hot water storage tank 40, a pipe connection portion 42, a wiring connection portion 44, and the like appear. The hot water storage tank 40 is arranged on the back side region 10b in the bottom 10 of the outer case 30, and is supported by a plurality of tank support members 41 (see FIG. 5) erected in the region 10b. In FIG. 4, the tank support member 41 does not appear, and only one support member 41 appears in FIG. Although not shown, a heat insulating material is provided around the hot water storage tank 40 to keep the hot water stored in the hot water storage tank 40 warm.

The pipe connection part 42 is provided in a region 10 a on the front side in the bottom part 10. The illustrated pipe connection portion 42 is constituted by a total of four straight tubular joint portions T _{1 to} T ₄ (see FIG. 4) penetrating the region 10a, and is provided at the upper end side of each joint portion T _{1 to} T _4. Internal piping and external piping are connected to the lower end side. Note that a total of two fixing tool insertion holes SH ₂ and SH ₂ (FIG. 4) for fixing the closed front panel portion 11 with screws 31 (see FIG. 2) are provided on the front side of the region 10a. Specifically, an internal thread is formed.

A first support member 43 is provided above the region 10 a at a predetermined interval from the region 10 a, and a wiring connection portion 44 is attached to the first support member 43. The first support member 43 is installed on the right side panel portion 12 and the left side panel 13, and the wiring connection portion 44 is hung from the first support member 43 at the lower end portion of the first support member 43. It is fixed. 4, the connector 44a for connecting the power supply wiring 56 (see FIG. 1) and the connector 44b for connecting the heat pump power line 57 (see FIG. 1) are drawn on the wiring connecting portion 44. . On the side of the front side of the first support member 43, the front panel unit 11 is opened when the front panel unit 11 is opened until the pipe connection unit 42 is exposed (hereinafter referred to as “first open state”). A total of two fixing tool insertion holes SH ₃ and SH ₃ (see FIG. 4), and specifically, female screws, are provided for temporarily fixing the screws.

A second support member 45 is provided above the first support member 43 at a predetermined interval from the first support member 43. The second support member 45 is installed on the right side panel portion 12 and the left side panel 13, and the front panel portion 11 is exposed until the wiring connection portion 44 is exposed on the front side of the second support member 45. 2 in a total of two fixing tool insertion holes SH ₄ and SH ₄ for temporarily fixing the front panel 11 with the screws 31 when it is in the open state (hereinafter referred to as “second open state”) (see FIG. 4). Specifically, an internal thread is formed. The second support member 45 and the first support member 43 described above also function as a reinforcing material that increases the rigidity of the exterior case 30.

  6 is a perspective view schematically showing a front panel portion constituting the outer case with the hot water storage tank unit of FIG. 2, and FIG. 7 is a right side panel portion constituting the outer case with the hot water storage tank unit of FIG. It is a perspective view shown roughly. Among the components shown in FIG. 6 or FIG. 7, the components already described with reference to FIG. 2 are denoted by the same reference symbols as those used in FIG.

As shown in FIG. 6, at the lower portion of the main panel portion 11a in the front panel portion 11, a total of two fixing tool insertion holes SH ₁ for fixing the front panel portion 11 with screws 31 (see FIG. 2), SH ₁ , specifically, a through hole is formed. These fixture insertion holes SH ₁ and SH ₁ overlap with the aforementioned fixture insertion holes SH ₂ and SH ₂ (see FIG. 4) when the front panel portion 11 is closed. Further, when the front panel unit 11 to the first open state overlap with the aforementioned fastener insertion hole SH _3, SH ₃ (see FIG. 4), the above-described fastener insertion hole SH _4, SH is when the second open state ₄ (See Figure 4). After the left and right end portions 11e, 11e (only the right end portion 11e appears in FIG. 6) of the main panel portion 11a are bent to the back side of the exterior case 30 (see FIG. 2). The outer case 30 is further bent toward the inner side and formed into a groove that is recessed from the inner side to the outer side of the outer case 30. The horizontal cross-sectional shape of each end portion 11e, 11e is a U-shape.

Further, as shown in FIG. 7, the front panel 11 (see FIG. 2) end 12e of the right side panel 12 is bent to the inner side of the exterior case 30 (see FIG. 2) before the front panel. In the region R ₁ that is bent toward the portion 11 side and is preset from the lower end of the right side panel 12 to the center portion in the height direction, the end portion 12e is further bent toward the front panel portion 11 side. The overhanging portion 12f is formed by bending the outer case 30 to the right side. As a result, a groove portion GP _{2 that} is recessed from the outer side to the inner side of the outer case 30 is formed in the region R ₁ . The region R ₁ in which the groove portion PG ₂ is formed extends from the lower end of the right side panel 12 to above the mounting position of the first support member 43. On the other hand, no overhang portion 12f is formed at the end portion 12e in the upper region R ₂ of the region R _1, having an L-shaped horizontal cross section. Although illustration is omitted, the shape of the left side panel portion 13 (see FIG. 2) in the exterior case 30 has a mirror image relationship with the shape of the right side panel portion 12.

  The shapes of the end portions 11e and 11e of the main panel portion 11a, the end portion 12e on the right side panel portion 12, and the end portion (not shown) on the front panel portion 11 side in the left side panel portion 13 are as described above. In the exterior case 30 selected as above, the front panel unit 11 engages with the side panel units 12 and 13 so as to be slidable in the vertical direction. This point will be described in detail with reference to FIGS.

  FIG. 8 is a horizontal sectional view schematically showing the hot water storage tank unit of FIG. 2, and FIG. 9 is an enlarged view of a part of FIG. 10 is another horizontal cross-sectional view schematically showing the hot water storage tank unit of FIG. 2, and FIG. 11 is an enlarged view of a part of FIG. 8 corresponds to a horizontal sectional view when the hot water tank unit 50 is horizontally cut directly above the first support member 43, and FIG. 10 is a horizontal cut of the hot water tank unit 50 above the second support member 45. This corresponds to a horizontal cross-sectional view.

As shown in FIGS. 8 and 9, immediately above the first support member 43 (see FIG. 8) in the hot water storage tank unit 50, an overhanging portion 11f formed on the right end portion 11e of the main panel portion 11a is provided. is inserted into the groove GP ₂ of the right side surface panel portion 12, the groove extending portion 12f formed at the end portion 12e of the right side surface panel portion 12 is formed on the right end portion 11e of the main panel portion 11a GP ₁ The end portions 11e and 12e are engaged with each other. Similarly, a protruding portion 11f formed on the left end portion 11e of the main panel portion 11a is inserted into the groove portion GP ₂ (see FIG. 8) of the left side panel portion 13, and the end portion 13e of the left side panel portion 13 is inserted. overhang portion 13f which is formed is inserted into the groove GP ₁ which is formed on the left side of the end portion 11e of the main panel portion 11a, each end 11e, 13e are engaged with each other.

Each overhang portion 11f of the main panel portion 11a, the wall thickness of the 11f is smaller than the groove GP _2, the width of the GP ₂ on each side panel portions 12 and 13, projecting portion 12f of each side panel portion 12, 13, the thickness of 13f is smaller than the width of each groove GP ₁ of the main panel portion 11a. Therefore, the main panel portion 11a is slidable along the groove portions GP ₂ and GP ₂ , and as a result, the front panel portion 11 (see FIG. 2) is slidable in the vertical direction.

  On the other hand, as shown in FIGS. 10 and 11, above the second support member 45 (see FIG. 10) in the hot water storage tank unit 50, the right end portion 11e and the right side panel portion 12 of the main panel portion 11a. The ends 12e are not engaged with each other. Similarly, the left end portion 11e of the main panel portion 11a and the end portion 13e of the left side panel portion 13 are not engaged with each other.

  In the hot water storage tank unit 50 having the exterior case 30 in which the main panel portion 11a and the side panel portions 12 and 13 are engaged with each other in the above-described engagement form, the front panel is used when connecting external piping to the hot water storage tank unit 50. When the external wiring is connected to the unit 50 in the hot water storage tank, the front panel portion 11 is slid upward to the second open state. To do. Hereinafter, the open state of the front panel unit 11 will be described in detail with reference to FIGS.

  12 is a perspective view schematically showing a state in which the front panel portion is in the first open state in the hot water storage tank unit of FIG. 2, and FIG. 13 is a perspective view of the front panel portion in the hot water storage tank unit of FIG. FIG. 14 is a side view schematically showing a state when the front panel is opened, and FIG. 14 is a front view schematically showing a state when the front panel portion is first opened in the hot water storage tank unit of FIG. 2. 15 is a perspective view schematically showing a state in which the front panel portion is in the second open state in the hot water storage tank unit of FIG. 2, and FIG. 16 is a perspective view of the front panel portion in the hot water storage tank unit of FIG. FIG. 17 is a side view schematically showing a state when the second open state is reached, and FIG. 17 is a front view schematically showing a state when the front panel portion is opened in the second open state in the hot water storage tank unit of FIG. .

  Of the components shown in these figures, those already described with reference to FIG. 2, FIG. 3, FIG. 4, FIG. 8, or FIG. The same reference numerals as those used in FIG. In each of FIGS. 14 and 17, the front panel portion is drawn with imaginary lines.

As shown in FIGS. 12 to 14, the front panel 11 is slid upward from the closed state, and the screw 31 is fixed to the fixture of the first support member 43 from the fixture insertion hole SH ₁ (see FIG. 6) of the front panel portion 11. By inserting and fixing in the insertion hole SH ₃ (see FIG. 14), the front panel portion 11 of the exterior case 30 can be temporarily fixed in the first open state. In this first open state, as shown in FIG. 14, the lower part of the pipe connection part 42 is exposed. Therefore, if the front panel portion 11 is in the first open state, the external pipe connection work can be easily performed. The height from the installation surface of the hot water tank unit 50 to the pipe connection part 42 is designed to be, for example, about 300 mm or more so that the worker does not have to work in an unreasonable posture during the connection work. The attachment position of the first support member 43 is selected.

Further, as shown in FIGS. 15 to 17, the front panel 11 is further slid upward from the first open state, and the screw 31 is second supported from the fixture insertion hole SH ₁ (see FIG. 6) of the front panel portion 11. By inserting and fixing in the fixture insertion hole SH ₄ (see FIG. 17) of the member 45, the front panel portion 11 of the exterior case 30 can be temporarily fixed in the second open state. In the second open state, as shown in FIG. 17, the connector portions 44a and 44b of the wiring connection portion 44 are exposed. Therefore, if the front panel unit 11 is in the second open state, it is possible to easily perform external wiring connection work and inspection work. Of course, the front panel unit 11 may be in the second open state, and the external pipe connection work and the pipe connection part 42 may be inspected. Note that the reference symbol “Th” in FIG. 15 indicates a wiring insertion hole formed in the region 10a on the front surface side of the bottom portion 10 for passing external wiring.

When the front panel unit 11 is opened and closed, the temporary fixing by the screw 31 is released. At this time, even if an operator or an inspector releases his / her hand from the front panel 11, a region below the first support member 43, specifically, the upper end of the region R ₁ (see FIG. 7) described above. In the lower region, the end portions 11e and 11e of the main panel portion 11a are engaged with the end portions 12e and 13e of the side panel portions 12 and 13 (see FIG. 8), so that the front panel portion 11 is Safety is ensured without falling to the front side of the outer case 30. If the front panel portion 11 is slid upward until the engagement between the end portions 11e and 11e of the main panel portion 11a and the end portions 12e and 13e of the side panels 12 and 13 is released, the front panel portion 11 is moved to the exterior case 30. Can be removed from.

  In the hot water storage type water heater 60 (see FIG. 1) in which the exterior case 30 is configured as described above, the pipe connecting portion 42 and its surroundings are provided by the skirt portion SP (see FIG. 2) provided on the body portion 15 of the exterior case 30. Since the cover is concealed, the decorative cover used in the conventional hot water storage type water heater becomes unnecessary. Moreover, since the front panel part 11 of the exterior case 30 can be opened until the connector parts 44a and 44b of the pipe connection part 42 and the wiring connection part 44 are exposed, even when the hot water storage tank unit 50 is installed in a narrow ground. It is easy to check and repair the hot water tank unit 50. Therefore, in the hot water storage tank type water heater 60, the hot water storage tank unit 50 can be easily installed, inspected and repaired even in a small area.

  As mentioned above, although the hot water storage type hot water heater of the present invention has been described with reference to the embodiment, as described above, the present invention is not limited to the above embodiment. For example, the bottom part of the exterior case may have a shape in which a front side region and a back side region are on the same plane. When the shape of the bottom portion is made in this way, for example, a skirt portion is formed in the trunk portion of the outer case so that a drawing / drawing space for external piping and external wiring is formed below the entire bottom portion. .

  The front panel part of the exterior case can be configured so that the pipe connection part and the wiring connection can be exposed by sliding the entire front panel part in the left-right direction, and the opening / closing door-like opening / closing part that can slide in the vertical direction Alternatively, by providing a sliding door-like opening / closing part that can slide in the left-right direction as a part of the front panel part, the pipe connection part and the wiring connection can be exposed. When the pipe connection part and the wiring connection are configured to be exposed by sliding the entire front panel part in the up-down direction and the left-right direction, the front panel part may be configured in a rounded door shape. The present invention can be applied to various types of hot water storage water heaters that require construction of external piping and external wiring, and are desired to cover and conceal piping connections and wiring connections. A configuration other than opening and closing can be selected as appropriate.

DESCRIPTION OF SYMBOLS 1 Heat pump unit 10 Bottom part 10a Front side area 10b Rear side area 11 Front panel part 11a Main panel part 11b Sub panel part 11e End part 11f Overhang part 12 Right side panel part 12e End part 12f Overhang part 13 Left side panel part 13e End Part 13f Overhang part 14 Rear panel part 15 Body part 20 Top plate part 20a Overhang part 30 Exterior case 42 Pipe connection part 43 First support member 44 Wiring connection part 45 Second support member 50 Hot water storage tank unit 51 Water supply pipe 52 Heat pump pipe 53 Heat Pump Return Pipe 54 Hot Water Supply Pipe 56 Power Supply Wiring 57 Heat Pump Power Line 60 Hot Water Storage Water Heater LS Retraction / Drawer Space SP Skirt

Claims (5)

A hot water storage type water heater provided with a hot water storage tank unit provided with a pipe connection part for connecting an external pipe to an outer case containing a hot water storage tank,
The outer case is
A bottom portion provided with the pipe connection portion;
A hollow body that has a skirt portion for covering the entire bottom portion and the pipe connection portion from the side so as to hide the pipe connection portion and its periphery, and forming a storage space for the hot water storage tank above the bottom portion. And
A top plate covering the upper end side of the trunk,
Have
The trunk includes an openable and closable front panel that can be opened until the pipe connection is exposed.
A hot water storage water heater characterized by that. The bottom portion has a shape in which the front side region of the exterior case is shaped one step higher than the back side region,
The pipe connection part is provided in the area on the front side at the bottom part,
The hot water storage type water heater according to claim 1. A wiring connection part for external wiring connection disposed above the pipe connection part in the exterior case;
The front panel portion can be opened until the wiring connection portion is exposed.
The hot water storage type water heater according to claim 1 or 2. The top plate part of the outer case covers the upper end side of the trunk part leaving a gap on the front side of the outer case,
The front panel portion is
A main panel covering the front side of the exterior case;
A sub-panel portion that covers the gap left on the front side of the outer case by the exterior case; and
Having
The hot water storage type hot water supply device according to any one of claims 1 to 3.   The hot water storage type hot water supply apparatus according to any one of claims 1 to 4, wherein the front panel portion is opened and closed by sliding in a vertical direction.

Images