JP6223303B2 - Hot water storage tank unit - Google Patents

Description

  The present invention relates to a hot water storage tank unit including a hot water storage tank.

A hot water storage tank unit having a hot water storage tank for storing hot water is known.
The hot water storage tank unit includes a hot water storage tank, an outer box that accommodates the hot water storage tank, and a plurality of legs that support the outer case, and when transported (for example, during installation or disposal), It is common for a tank unit to be carried by two workers. One worker supports the legs of the hot water storage tank unit, and the other worker supports the vicinity of the top plate of the outer box (the opposite side of the legs).

  By the way, the hot water storage tank unit is not so light (for example, 60 to 80 kg), and the outer surface of the outer box is slippery. Therefore, if there is no handle near the top plate of the outer box, it becomes difficult for the other worker described above to firmly support the vicinity of the top plate. In consideration of the above, for example, a hot water storage tank unit having the following configuration is disclosed.

That is, Patent Document 1 describes a hot water storage tank unit including a hot water storage tank, a peripheral wall plate disposed so as to surround the hot water storage tank, and a top plate provided at an upper end portion of the peripheral wall plate.
The above-mentioned top plate has a projecting portion that is formed so that at least one side has a vertical projection shape larger than the vertical projection shape of the surrounding wall plate. When the hot water storage tank unit is transported, one worker supports the legs of the hot water storage tank unit, and the other worker supports the protruding portion of the top plate.

Japanese Patent No. 4898416

  By the way, although patent document 1 describes the case where the vertical projection shape of the surrounding wall plate (that is, the cross section of the outer box) is rectangular, the case where the surrounding wall plate is in another shape. Not listed. If the peripheral wall plate is formed in another shape, it may take time to manufacture an overhang portion formed by bending a portion near one end of the top plate. Further, depending on the shape of the surrounding wall plate, the hot water storage tank unit may not be easily transported.

  Then, this invention makes it a subject to provide the hot water storage tank unit which is easy to convey.

In order to solve the above problems, a hot water storage tank unit according to the present invention includes a hot water storage tank and an outer columnar outer box that accommodates the hot water storage tank, and the outer box includes a piping cover for accommodating piping. A first wall portion, a second wall portion facing the first wall portion, a pair of third wall portions surrounding the hot water storage tank together with the first wall portion and the second wall portion, A top plate for closing one side of a cylinder including the first wall, the second wall, and the pair of third walls, and a bottom plate for closing the other side of the cylinder, exhibits a concave angle shape in cross-section view, the second wall portion, both ends around the cross-section view, the hot water storage tank has a pair of recesses recessed side, a pair of the recess, respectively, cross-sectional view The one end side of the connecting plate is connected to the third wall portion, and in addition to the connecting plate in a cross-sectional view. Contiguous to the side, the angle between the connection plate comprises an inclined plate is an obtuse angle, respectively, said connecting plate of the pair of the recess, and having a handle portion provided in the vicinity of the top plate.

A hot water storage tank unit according to the present invention includes a hot water storage tank and an outer columnar outer box that accommodates the hot water storage tank, and the outer box is provided with a pipe cover for accommodating a pipe. A wall, a second wall facing the first wall, a pair of third walls surrounding the hot water storage tank together with the first wall and the second wall, the first wall, A top plate that closes one side of a cylindrical body that includes the second wall portion and the pair of third wall portions; and a bottom plate that closes the other side of the cylindrical body, the cylindrical body being concave in a cross-sectional view. Presenting a polygonal shape, the second wall portion has a pair of recesses recessed toward the hot water storage tank in the vicinity of both ends in a cross-sectional view, and each of the pair of recesses has one end side in the cross-sectional view. A connection plate connected to the third wall portion, and in a cross-sectional view, connected to the other end side of the connection plate; Wherein the inclined plate angle is an obtuse angle with the plate, and the top plate is characterized by having a handle portion formed by extending outward from the pair of the recesses.

A hot water storage tank unit according to the present invention includes a hot water storage tank and an outer columnar outer box that accommodates the hot water storage tank, and the outer box is provided with a pipe cover for accommodating a pipe. A wall, a second wall facing the first wall, a pair of third walls surrounding the hot water storage tank together with the first wall and the second wall, the first wall, A top plate that closes one side of a cylinder including the second wall portion and the pair of third wall portions; a bottom plate that closes the other side of the cylinder; and the second wall portion that is installed near the top plate. The cylindrical body has a concave polygonal shape in a cross-sectional view, and the second wall portion has a pair of recesses recessed toward the hot water storage tank near both ends in the cross-sectional view. Each of the pair of concave portions has one end side connected to the third wall portion in a cross-sectional view. And connection plates, in cross-section view, continuous to the other end of the connecting plate comprises an inclined plate angle is an obtuse angle with the connection plates, each of said handle member, said second wall portion A hole portion that has a contact portion that is fixed while being in contact with the recess , and a handle portion that is fixed at both ends to the contact portion, and through which the finger can be inserted by the contact portion and the handle portion. Is formed.

  ADVANTAGE OF THE INVENTION According to this invention, the hot water storage tank unit which can be conveyed easily can be provided.

It is a whole block diagram of a water heater provided with the hot water storage tank unit which concerns on 1st Embodiment of this invention. It is the perspective view which looked down at the hot water storage tank unit from the left rear. It is arrow sectional drawing of the II-II line | wire shown in FIG. FIG. 3 is a partially enlarged view of a region X shown in FIG. 2. It is explanatory drawing which shows a mode that a hot water storage tank unit is laid down and conveyed. In the hot water storage tank unit which concerns on 2nd Embodiment of this invention, it is the elements on larger scale of the location corresponding to the area | region X shown in FIG. (A) is the bottom view which looked at the hot water storage tank unit which concerns on 3rd Embodiment of this invention from the bottom side, (b) is the perspective view which looked up the corner | angular part of the right rear side of a top plate from diagonally downward. is there. In the hot water storage tank unit which concerns on 4th Embodiment of this invention, it is the perspective view which looked up the corner | angular part vicinity of the right rear side of a top plate from diagonally downward. In the hot water storage tank unit concerning a 5th embodiment of the present invention, it is the perspective view which looked up the corner part of the right rear side of a top plate from the slanting bottom. It is a cross-sectional view of a hot water storage tank unit according to a modification of the present invention.

<< First Embodiment >>
<Configuration of water heater>
FIG. 1 is an overall configuration diagram of a water heater A including a hot water storage tank unit 20 according to the first embodiment.
The water heater A heats the hot water stored in the hot water storage tank 1 using the heat pump unit 10, mixes the high temperature water stored in the hot water storage tank 1 and the water from the water supply source, and supplies the hot water to the hot water supply terminal 19. It is a device to do. The water heater A includes a heat pump unit 10 and a hot water storage tank unit 20.

(Heat pump unit)
The heat pump unit 10 is a device that heats the low-temperature water flowing from the hot water storage tank 1 through the water inlet pipe 12 into high-temperature water and returns the high-temperature water to the hot water storage tank 1 through the hot water outlet pipe 14. Although not shown, the heat pump unit 10 includes a compressor, a condenser, a pressure reducing valve, and an evaporator, which are sequentially connected in an annular manner via a pipe. And a heat medium is circulated by a known heat pump cycle through the above-mentioned piping, and the low temperature water which flows in from the hot water storage tank 1 through the water intake pipe 12 is heated by the above-mentioned condenser.

(Hot water storage tank unit)
The hot water tank unit 20 stores hot water. The hot water storage tank unit 20 includes a hot water storage tank 1, an outer box 2 that accommodates the hot water storage tank 1, and a foam insulation 3 (dot-displayed portion) that is filled between the hot water storage tank 1 and the outer box 2. ing.

FIG. 2 is a perspective view of the hot water storage tank unit 20 as viewed from the left rear. 2, illustration of the foam heat insulating material 3 (refer FIG. 1) and each piping was abbreviate | omitted.
The hot water storage tank 1 is a shell-like member that stores hot water, and the outer shape thereof has a cylindrical shape. More specifically, the hot water storage tank 1 includes a cylindrical body plate 1a, a hemispherical upper end plate 1b covering the upper opening of the body plate 1a, and a hemispherical lower end plate 1c covering the lower opening of the body plate 1a. It is equipped with. The upper end plate 1b and the lower end plate 1c are welded to the body plate 1a.

In addition, as a constituent material of the hot water storage tank 1, for example, a stainless steel plate can be used. The hot water storage tank 1 having such a configuration is installed such that its central axis is parallel to the vertical direction.
A plurality of temperature sensors (not shown) are provided on the outer peripheral surface (front side) of the hot water storage tank 1 at predetermined intervals in the vertical direction. In addition, three legs G are installed in the lower part of the hot water storage tank 1, and each leg G is fixed to the outer box 2 with bolts. Incidentally, you may make it fix the leg G mutually with the leg H installed in the outer case 2 mentioned later.

As shown in FIG. 1, at the lower part of the hot water storage tank 1, a water supply pipe 11 for supplying water from the water supply source to the hot water storage tank 1 and water (low temperature water) stored at the lower part of the hot water storage tank 1 are used as a heat pump unit. A water inlet pipe 12 for introduction into the pipe 10 is connected.
A pump 13 is installed in the water inlet pipe 12. By driving the pump 13, low-temperature water stored in the lower part of the hot water storage tank 1 is pumped to the heat pump unit 10 through the water inlet pipe 12.

Further, at the upper part of the hot water storage tank 1, a hot water discharge pipe 14 for returning the high temperature water heated by the heat pump unit 10 to the hot water storage tank 1 and a hot water supply pipe 15 for taking out the high temperature water stored at the upper part of the hot water storage tank 1. And are connected. Incidentally, the hot water storage tank 1 is always full when the water heater A is used.
In addition, a mixing valve 17 is provided for mixing water supplied through the branch water supply pipe 16 connected to the water supply pipe 11 and high-temperature water taken out from the upper part of the hot water storage tank 1 through the hot water supply pipe 15. Yes. Hot water mixed by the mixing valve 17 is supplied to a hot water supply terminal 19 via a hot water supply pipe 18.

  The configuration of the water heater A is not limited to that shown in FIG. For example, the water supply source may be configured to have a direct water pressure type structure in which water supplied from a water supply source is heated by heat exchange with high-temperature water taken out from the hot water storage tank 1.

  The outer box 2 shown in FIG. 2 is a steel plate housing that houses the hot water storage tank 1, and the outer shape of the outer box 2 has a vertically long column shape. The outer box 2 includes a “cylinder” surrounding the hot water storage tank 1, a top plate 24 that closes the upper side (one side) of the “cylinder”, and a bottom plate 25 that closes the lower side (the other side) of the “cylinder”. It is equipped with.

FIG. 3 is a cross-sectional view taken along the line II-II shown in FIG.
The “tubular body” described above is provided on the left and right sides of the hot water storage tank 1, the “first wall portion” disposed on the front side of the hot water storage tank 1, the “second wall portion” disposed on the rear side of the hot water storage tank 1, and And a pair of “third wall portions” to be arranged.

  The “first wall portion” includes a front plate 21a, front inclined plates 21b and 21c, and connection plates 21d and 21e, and is formed by, for example, pressing a single steel plate. The front inclined plate 21b is connected to the left end of the front plate 21a, and the connection plate 21d is connected to the left end of the front inclined plate 21b and extends parallel to the front plate 21a (the same applies to the front inclined plate 21c and the connection plate 21e).

  Although not shown, the front plate 21a and the connection plates 21d and 21e are provided with a plurality of through holes for each pipe (water supply pipe 11 and the like: see FIG. 1) connected to the hot water storage tank 1. After each pipe is penetrated through this through hole and valves and the like are further installed, a pipe cover K is installed on the front side of the “first wall”. The piping cover K is a member for accommodating piping and shielding from the outside, and has a box shape (concave shape) with an open rear side.

The “second wall portion” disposed on the rear side of the hot water storage tank 1 includes a rear plate 22a, rear inclined plates 22b and 22c, and connection plates 22d and 22e. For example, a single steel plate is pressed. It is formed by processing. The “second wall portion” faces the above-described “first wall portion” in the front-rear direction.
As shown in FIG. 3, the rear inclined plate 22b is connected to the left end of the rear plate 22a, and the connection plate 22d is connected to the left end of the rear inclined plate 22b and extends in parallel with the rear plate 22a (the rear inclined plate 22c, the connection plate). The same applies to 22e).

  Further, the “second wall portion” has a pair of concave portions 22p and 22q in the vicinity of both left and right ends in the cross sectional view. The left recess 22p is a part including the rear inclined plate 22b and the connection plate 22d, and is recessed toward the hot water storage tank 1 side. The right recess 22q is a part including the rear inclined plate 22c and the connection plate 22e, and is recessed toward the hot water storage tank 1 side.

  One recess 22p has a handle portion 221p (see FIG. 2) provided near the top plate 24 (see FIG. 2). The other concave portion 22q also has a handle portion 221q (see FIG. 2) provided near the top plate 24. The handle portions 221p and 221q are portions where fingers of the worker N are hung when the hot water storage tank unit 20 is laid down and transported (see FIG. 5).

  FIG. 4 is a partially enlarged view of region X shown in FIG. The handle portion 221p is formed, for example, by denting a part of the connection plate 22d (near the top plate 24) to the hot water storage tank 1 side by pressing. That is, the handle portion 221p is a dent that is elongated in the vertical direction so that the finger of the worker N can be hooked during transportation (see FIG. 5). Similarly, the right handle portion 221q shown in FIG. 2 is formed by denting a part of the connection plate 22e (near the top plate 24) toward the hot water storage tank 1 side.

By making the handle portions 221p and 221q in such a shape, the handle portions 221p and 221q can be provided on the connection plates 22d and 22e having a relatively narrow lateral width.
Incidentally, when the hot water storage tank unit 20 is laid sideways with the piping cover K facing upward (see FIG. 5), the connection plates 22d and 22e near the left and right sides are substantially parallel to the ground, and the connection plates 22d and 22e are on the ground side. It will be in a state to face. Therefore, considering that the worker N supports the hot water storage tank unit 20 from the left and right sides, it can be said that it is optimal to provide the handle portions 221p and 221q on the left and right connection plates 22d and 22e.

  In addition, the pair of handle portions 221p and 221q are preferably arranged close to the left and right ends of the hot water storage tank unit 20. Although details will be described later, this makes it easier for the operator N to hold the hot water storage tank unit 20 (see FIG. 5) on both sides from the left and right sides with the fingers 221p and 221q. .

Returning again to FIG. 3, the description will be continued.
A pair of “third wall portions” disposed on the left and right sides of the hot water storage tank 1 have side plates 23L and 23R. The “third wall portion” surrounds the hot water storage tank 1 together with the “first wall portion” disposed on the front side of the hot water storage tank 1 and the “second wall portion” disposed on the rear side of the hot water storage tank 1. Yes.

The top plate 24 shown in FIG. 2 is a plate-like member that closes the upper side of the above-described “tubular body”, and has a shape corresponding to the cross section of the outer box 2 (see FIG. 3).
The bottom plate 25 is a plate-like member that closes the lower side of the cylindrical body described above, and has a shape corresponding to the cross section of the outer box 2 (see FIG. 3).

In addition, each board which comprises the outer case 2 is substantially integrated by press work, welding, etc.
The bottom plate 25 is provided with three legs H (see FIG. 2) for supporting the outer box 2, and each leg H is fixed to the outer box 2 with a bolt.

  The foam insulation 3 (dot-displayed portion shown in FIG. 3) is for suppressing the heat leakage of the hot water stored in the hot water storage tank 1 and is filled between the hot water storage tank 1 and the outer box 2. Yes. As the foam heat insulating material 3, for example, a rigid polyurethane foam can be used.

<About transportation of hot water storage tank>
FIG. 5 is an explanatory view showing a state in which the hot water storage tank unit 20 is laid down and transported.
When the hot water storage tank unit 20 is transported (for example, during installation or disposal), the hot water storage tank unit 20 is laid down and carried by two people. That is, as shown in FIG. 5, the hot water storage tank unit 20 is placed on its side so that the central axis of the hot water storage tank 1 is parallel to the horizontal direction and the pipe cover K is on the upper side. In this state, the connection plates 22d and 22e (see FIG. 3) are substantially parallel to the ground, and the handle portions 221p and 221q are recessed on the opposite side of the ground.

As shown in FIG. 5, one worker M supports two of the three legs H installed on the bottom plate 25 of the hot water storage tank unit 20 with both hands. The other worker N holds the hot water storage tank unit 20 from both the left and right sides by placing fingers of both hands on a pair of handle portions 221p and 221q provided near the top plate 24.
As described above, the pair of handle portions 221p and 221q are elongated in the up-down direction (the front-rear direction as viewed from the operator N). Therefore, the worker N can easily support and hold the hot water storage tank unit 20 by placing the finger of the left hand on the handle portion 221p and the finger of the right hand on the handle portion 221q.

  In the left-right direction, the handle portion 221p is provided near the side plate 23L, and the handle portion 221q is provided near the side plate 23R (see FIG. 3). Therefore, the worker N can carry the hot water storage tank unit 20 while applying palms to the side plates 23L and 23R while tightening both sides of the worker N. Thereby, it becomes easy to apply force when supporting the hot water storage tank unit 20, and the hot water storage tank unit 20 can be easily transported.

<Effect>
According to this embodiment, it was set as the structure which provides the recessed parts 22p and 22q (refer FIG. 3) dented in the hot water storage tank 1 side in cross-sectional view. Thereby, the shape of the cross section of the outer box 2 can be made close to a circle, and the filling amount of the foam heat insulating material 3 in the circumferential direction can be made uniform. As a result, the foaming pressure acting on the hot water storage tank 1 is made uniform, and deformation of the hot water storage tank 1 can be suppressed.
Further, when the hot water storage tank unit 20 is transported, the operator N puts his / her fingers on the handle portions 221p and 221q provided near the top plate 24 (see FIG. 5). It becomes easy to carry.

  Incidentally, instead of the connection plates 22d and 22e (see FIG. 3), a configuration in which a handle (dent) is provided on the rear plate 22a or the rear inclined plates 22b and 22c is also conceivable. However, when the handle is provided on the rear plate 22a, the distance between both hands in the left-right direction is very narrow when the fingers are put on the handle, and the hot water storage tank unit 20 is likely to fall down to the left or right during transportation. . Further, when the rear inclined plates 22 b and 22 c are provided with handle portions (dents), the horizontal component of the force perpendicular to the rear inclined plates 22 b and 22 c is offset, and the vertical acting on the hot water storage tank unit 20. The upward force is reduced.

  On the other hand, in the present embodiment, as described above, since the handle portions 221p and 221q are provided on the connection plates 22d and 22e, the worker N (see FIG. 5) tightens both sides and stores hot water from both the left and right sides. The tank unit 20 can be supported. Since the handle portions 221p and 221q are relatively separated in the left-right direction, the hot water storage tank unit 20 is unlikely to fall down to the left or right during transportation, and hot water storage is performed by applying a vertically upward force to the handle portions 221p and 221q. The tank unit 20 can be firmly held.

<< Second Embodiment >>
The second embodiment is different from the first embodiment in that the handle portion 221r (see FIG. 6) is a protrusion rather than a dent, but the rest is the same as the first embodiment. Therefore, the structure of the handle part 221r different from the first embodiment will be described, and the description of the overlapping parts will be omitted.

<Composition of handle part>
The pair of recesses 22p and 22q (see FIG. 3) provided in the hot water storage tank 1 have handle portions 221r and 221r (see FIG. 6) provided near the top plate 24.

FIG. 6 is a partially enlarged view of a portion corresponding to a region X shown in FIG. 2 in the hot water storage tank unit 20 according to the second embodiment.
The handle portion 221r shown in FIG. 6 has three protrusions r1 extending in the vertical direction, and functions as a slip stopper when the finger of the operator N (see FIG. 5) is hooked during transportation. The handle portion 221r is formed, for example, by projecting a part of the connection plate 22d (near the top plate 24) outward by pressing. A handle portion 221r (not shown) provided on the right connection plate 22e (see FIG. 3) also has the same configuration as the left side.

  Incidentally, although the case where the handle portion 221r is the three protrusions r1 extending in the vertical direction has been described in FIG. 6, the one, two, or four or more protrusions extending in the vertical direction may be referred to as the “handle portion”. . In addition, a plurality of dot-like protrusions provided at positions where the operator N (see FIG. 5) can easily place fingers on the connection plates 22d and 22e may be used as “handle portions”.

<Effect>
In the present embodiment, the hot water storage tank unit 20 includes handle portions 221r and 221r having three protrusions r1. Therefore, when the hot water storage tank unit 20 is transported, the operator N (see FIG. 5) puts his / her fingers on the handle portions 221r and 221r so that the fingers are not easily slipped and the hot water storage tank unit 20 is easily carried.
Further, as compared with the handle portions 221p and 221q (indentation: see FIG. 4) described in the first embodiment, the protrusion r1 makes it easier for the operator N to identify the positions of the handle portions 221r and 221r by groping. Therefore, the hot water storage tank unit 20 can be easily transported.

«Third embodiment»
In the third embodiment, the handle portions 221p and 221q (see FIG. 2) provided on the connection plates 22d and 22e are omitted, and a part of the top plate 24 is a handle portion 24s (see FIG. 7B). Is different from the first embodiment, but is otherwise the same as the first embodiment. Therefore, the structure of the handle part 24s different from the first embodiment will be described, and the description of the overlapping parts will be omitted.

<Composition of handle part>
Fig.7 (a) is the bottom view which looked at the hot water storage tank unit 20 which concerns on 3rd Embodiment from the bottom side. As in the first embodiment, the outer box 2 has a columnar shape, and the “second wall portion” disposed on the rear side of the hot water storage tank 1 (see FIG. 1) has recesses 22p and 22q on the left and right sides thereof. Have. In addition, the triangular part shown by the dot display in Fig.7 (a) is the handle part 24s of the top plate 24 demonstrated below.

  FIG. 7B is a perspective view in which the vicinity of the corner on the right rear side of the top plate 24 is viewed obliquely from below. The top plate 24 has handle portions 24s, 24s extending outward from the pair of recesses 22p, 22q. That is, the left and right sides of the rear portion of the top plate 24 protrude outward from the recesses 22p and 22q. The handle portions 24s and 24s have a triangular shape in a bottom view (dot display portion in FIG. 7A).

  At the time of transportation, the hot water storage tank unit 20 is laid down and carried by two people as in the first and second embodiments. That is, as shown in FIG. 5, the hot water storage tank unit 20 is placed on its side so that the central axis of the hot water storage tank 1 is parallel to the horizontal direction and the pipe cover K is on the upper side. One worker M supports the leg H with both hands, and the other worker N supports the left and right handle portions 24s, 24s of the top plate 24 with both hands.

  Here, the handle portions 24s and 24s extend outward from the wall surfaces of the recesses 22p and 22q (that is, the recesses 22p and 22q are recessed inward from the handle portions 24s and 24s). Therefore, the operator N can bend the fingers of both hands to firmly hold the left and right sides of the top plate 24 and can carry the hot water storage tank unit 20 while applying the palm to the top plate 24.

<Effect>
According to this embodiment, when the top plate 24 has the handle portions 24s, 24s (see FIG. 7), the hot water storage tank unit 20 can be easily transported as described above. Further, unlike the first and second embodiments (see FIGS. 4 and 6), it is not necessary to press the connecting plates 22d and 22e, and therefore the number of manufacturing steps for the hot water storage tank unit 20 can be reduced. Moreover, since a part of the top plate 24 is made into handle parts 24s and 24s, the manufacturing cost of the hot water storage tank unit 20 can be reduced compared with the case where a handle part is provided with another member.

<< Fourth Embodiment >>
The fourth embodiment is that the handle member 5 (see FIG. 8) is installed at a location where the top plate 24 protrudes outward from the recesses 22p and 22q (dot display portion in FIG. 7A). Although different from the third embodiment, the rest is the same as the third embodiment. Therefore, the handle member 5 will be described, and description of portions overlapping with those of the third embodiment will be omitted.

FIG. 8 is a perspective view of the hot water storage tank unit 20 according to the fourth embodiment, in which the vicinity of the corner on the right rear side of the top plate 24 is viewed from obliquely below.
The handle member 5 is a resin member having a contact portion 5a and a handle portion 5b, and is installed in the vicinity of the top plate 24 in the concave portion 22q (see FIG. 7A) of the second wall portion. ing. Although the right handle member 5 is shown in FIG. 8, the handle member 5 is also installed in the left recess 22p (see FIG. 7A).

The contact portion 5a has a triangular prism shape, and is fixed to the outer box 2 in contact with the wall surfaces of the rear inclined plate 22c and the connection plate 22e.
The handle portion 5b is formed integrally with the contact portion 5a and extends outward in the left-right direction from the contact portion 5a. The width of the handle portion 5b is set so that a finger can be put on the handle portion 5b in a state where the hot water storage tank unit 20 is laid down.
The handle member 5 is provided with meat stealing h1 at a plurality of places (two places in FIG. 8). In addition, the strength of the handle member 5 is increased by providing a connecting flat portion 51b that connects the upper end of the abutment portion 5a and the handle portion 5b above the meat theft h1.

<Effect>
According to the present embodiment, the worker N can easily carry the hot water storage tank unit 20 by placing the fingers on the pair of handle members 5 and supporting the hot water storage tank unit 20. Moreover, the intensity | strength of the handle member 5 can be raised by providing the connection plane part 51b.

«Fifth embodiment»
The fifth embodiment is the fourth embodiment in which the connecting plane part 51b is omitted from the handle member 5 (see FIG. 8) and a hole U (see FIG. 9) for the operator N to insert a finger is provided. Although it differs from the form, the rest is the same as in the fourth embodiment. Therefore, the handle member 6 (see FIG. 9) will be described, and the description of the rest will be omitted.

FIG. 9 is a perspective view of the hot water storage tank unit 20 according to the fifth embodiment, in which the vicinity of the corner on the right rear side of the top plate 24 is viewed from obliquely below.
The pair of handle members 6 provided on the left and right are resin members having a contact portion 6a and a handle portion 6b, and are installed in the vicinity of the top plate 24 in the second wall portion described above. The shape of the contact portion 6a corresponds to the wall surfaces of the rear inclined plate 22c and the connection plate 22e (second wall portion), and is fixed in a state of being in contact with the wall surface. The handle portion 6b has an L shape in a cross-sectional view, and both ends thereof are fixed to the contact portion 6a. A hole U into which a finger can be inserted is formed by the contact portion 6a and the handle portion 6b.

The shape of the handle portion 6b is not limited to that shown in FIG. 9, and may be a curved rod-like configuration, for example. Moreover, the contact part 6a and the handle part 6b may be integrally formed, or may be separately bonded or fastened together.
Moreover, although FIG. 9 demonstrated the structure which installs the handle member 6 in the recessed parts 22p and 22q (refer FIG. 7A) of the 2nd wall part, it is not restricted to this. For example, the outer shape of the outer box may be a rectangular parallelepiped (rectangular shape in cross section), and the handle member 6 may be installed near the top plate in the flat plate-like second wall portion (that is, the rear plate). Further, a spacer member (not shown) may be installed in the recesses 22p and 22q, and the handle member 6 may be installed near the top plate of the second wall portion.

<Effect>
According to the present embodiment, the worker N can put his / her finger from the upper side of the handle portion 6b when carrying the hot water storage tank unit 20 or can insert his / her finger into the hole U to grasp the handle portion 6b. Therefore, the freedom degree at the time of the worker N grasping the handle part 5b can be improved, and the conveyance work of the hot water storage tank unit 20 can be performed efficiently.

≪Modification≫
As mentioned above, although the hot water storage tank unit 20 which concerns on this invention was demonstrated by each embodiment, this invention is not limited to these description, A various change can be performed.
For example, in each embodiment, although the structure filled with the foam heat insulating material 3 between the hot water storage tank 1 and the outer case 2 was demonstrated, it is not restricted to this. That is, as shown in the modification of FIG. 10, a plurality of vacuum heat insulating materials 4 are installed on (in part of) the inner wall surface of the outer box 2, and the hot water storage tank 1 and the vacuum heat insulating material 4 (the vacuum heat insulating materials 4 overlap). In a place where there is not, a configuration in which the foam heat insulating material 3 is filled between the hot water storage tank 1 and the outer box 2) may be used.
The vacuum heat insulating material 4 suppresses the heat leakage of the hot water stored in the hot water storage tank 1, and includes, for example, a core material made of glass fiber (glass wool, etc.) and an outer packaging material that wraps the core material. It is a heat insulating material. In addition, the handle parts 221p and 221q shown in FIG. 10 have the same configuration as that of the first embodiment.

Further, as shown in FIG. 10, a pair of recesses (see FIG. 3) is not formed on the front side of the hot water storage tank unit 20, and the “first wall” where the pipe cover K is installed is only the front plate 21a. But you can.
Alternatively, the vacuum heat insulating material 4 may be installed on substantially the entire inner wall surface of the outer box 2, and the foam heat insulating material 3 may be filled between the vacuum heat insulating material 4 and the hot water storage tank 1. Further, the foam heat insulating material 3 may be omitted from the hot water storage tank unit 20, or a molded heat insulating material may be used instead of the vacuum heat insulating material 4.

Moreover, although 1st Embodiment demonstrated the case where the handle parts 221p and 221q (refer FIG. 4) provided near the top plate 24 were one dent, it is not restricted to this. For example, a plurality of dents that fit the fingertips may be scattered near the top plate 24.
Moreover, although each embodiment demonstrated the case where the recessed parts 22p and 22q (refer FIG. 3) which the outer case 2 had were a broken line shape by cross-sectional view, you may make a pair of recessed part into curved shape by cross-sectional view. .

  Moreover, each embodiment can be combined suitably. For example, the first embodiment and the third embodiment may be combined to provide the handle portions 221p and 221q in the recesses 22p and 22q (see FIG. 3), and the top plate 24 may have the handle portions 24s and 24s (see FIG. 3). 7). In this case, when the hot water storage tank unit 20 is transported, the worker N (see FIG. 5) having the vicinity of the top plate 24 only needs to have one that is easier to hold.

  Each embodiment is described in detail for easy understanding of the present invention, and is not necessarily limited to the one having all the described configurations. In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

A Water heater 10 Heat pump unit 20 Hot water storage tank unit 1 Hot water storage tank 11 Water supply pipe (pipe)
12 Inlet pipe (piping)
14 Hot water pipe (pipe)
15 Hot water supply pipe (pipe)
2 Outer box 21a Front plate (first wall)
21b, 21c Front inclined plate (first wall)
21d, 21e Connection plate (first wall)
22a Rear plate (second wall)
22b, 22c Rear inclined plate (second wall)
22d, 22e Connection plate (second wall)
22p, 22q Concave part 221p, 221q, 221r Handle part 23L, 23R Side plate (third wall part)
24 Top plate 24s Handle part 25 Bottom plate 3 Foam heat insulating material 4 Vacuum heat insulating material 5, 6 Handle member 5a, 6a Abutting part 5b, 6b Handle part K Piping cover r1 Projection U Hole part

Claims (5)

A hot water storage tank,
An outer columnar outer box that houses the hot water storage tank,
The outer box is
A first wall portion on which a pipe cover for housing the pipe is installed;
A second wall facing the first wall;
A pair of third wall portions surrounding the hot water storage tank together with the first wall portion and the second wall portion;
A top plate for closing one side of a cylindrical body including the first wall portion, the second wall portion, and the pair of third wall portions;
A bottom plate for closing the other side of the cylindrical body,
The cylindrical body has a concave polygonal shape in a cross-sectional view,
The second wall portion has a pair of recesses recessed toward the hot water storage tank side in the vicinity of both ends in a cross-sectional view,
The pair of recesses are respectively
In a cross-sectional view, a connection plate whose one end side is continuous with the third wall portion;
In a cross-sectional view, it is connected to the other end side of the connection plate, and includes an inclined plate having an obtuse angle with the connection plate,
Each of the connection plates of the pair of recesses has a handle portion provided in the vicinity of the top plate. The hot water storage tank unit according to claim 1, wherein the handle is one or a plurality of dents. The hot water storage tank unit according to claim 1, wherein the handle is one or a plurality of protrusions. A hot water storage tank,
An outer columnar outer box that houses the hot water storage tank,
The outer box is
A first wall portion on which a pipe cover for housing the pipe is installed;
A second wall facing the first wall;
A pair of third wall portions surrounding the hot water storage tank together with the first wall portion and the second wall portion;
A top plate for closing one side of a cylindrical body including the first wall portion, the second wall portion, and the pair of third wall portions;
A bottom plate for closing the other side of the cylindrical body,
The cylindrical body has a concave polygonal shape in a cross-sectional view,
The second wall portion has a pair of recesses recessed toward the hot water storage tank side in the vicinity of both ends in a cross-sectional view,
The pair of recesses are respectively
In a cross-sectional view, a connection plate whose one end side is continuous with the third wall portion;
In a cross-sectional view, it is connected to the other end side of the connection plate, and includes an inclined plate having an obtuse angle with the connection plate,
The hot water storage tank unit, wherein the top plate has a handle portion extending outward from the pair of concave portions. A hot water storage tank,
An outer columnar outer box that houses the hot water storage tank,
The outer box is
A first wall portion on which a pipe cover for housing the pipe is installed;
A second wall facing the first wall;
A pair of third wall portions surrounding the hot water storage tank together with the first wall portion and the second wall portion;
A top plate for closing one side of a cylindrical body including the first wall portion, the second wall portion, and the pair of third wall portions;
A bottom plate for closing the other side of the cylindrical body;
A pair of handle members installed near the top plate in the second wall portion,
The cylindrical body has a concave polygonal shape in a cross-sectional view,
The second wall portion has a pair of recesses recessed toward the hot water storage tank side in the vicinity of both ends in a cross-sectional view,
The pair of recesses are respectively
In a cross-sectional view, a connection plate whose one end side is continuous with the third wall portion;
In a cross-sectional view, it is connected to the other end side of the connection plate, and includes an inclined plate having an obtuse angle with the connection plate,
Each of the handle members is
A contact portion fixed in contact with the concave portion of the second wall portion;
A handle portion having both ends fixed to the contact portion,
The hot water storage tank unit is characterized in that a hole part into which a finger can be inserted is formed by the contact part and the handle part.

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