JP2016148497A - Storage type water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage type water heater that can restrain dew condensation water inside a case housing a hot water storage tank from leaking to the outside of the case.SOLUTION: A storage type water heater comprises a hot water storage tank and a case 3 housing the hot water storage tank. The case 3 comprises a first member (a side plate 4) including a wall and a second member (a top plate 5) located on the upper side of the first member. The second member comprises outside portions 5a and 5b located on the outside of the wall and inside portions 5d and 5e located on the inside of the wall. At least a portion (the inside portion 5e) of the inside portions 5d and 5e protrudes so that a distance from the wall is long.SELECTED DRAWING: Figure 4

Description

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

  Wide range of hot water storage hot water heaters configured to store hot water obtained by heating water with heating means such as a heat pump unit in a hot water storage tank, take out the hot water from the hot water storage tank and supply it to a hot water supply terminal when necessary It is used. Hot water storage tanks are often installed outdoors. The hot water storage tank is accommodated in a housing formed of a metal plate or the like.

  In the conventional hot water storage type water heater disclosed in Patent Document 1 below, the top plate covers the outside of the upper end portion of the side plate that forms the side surface of the housing. Moreover, the outer side of the bottom plate of the housing is surrounded by side plates. Such a structure prevents rainwater from entering the inside of the housing.

JP 2009-174765 A

  In the conventional case structure described above, condensed water adhered to the inner surface of the top plate of the case may flow along the inner surface and leak from the gap between the top plate and the side plate to the outside of the case. Further, there is a case where condensed water adhering to the inner surface of the side plate of the casing falls down along the inner surface and leaks to the outside of the casing through the gap between the side plate and the bottom plate. In these cases, the user may misunderstand that the water leaks from the hot water storage tank or the internal piping.

  The present invention has been made in order to solve the above-described problems, and provides a hot water storage type hot water heater capable of suppressing the dew condensation water inside the casing that houses the hot water storage tank from leaking to the outside of the casing. With the goal.

  A hot water storage type water heater according to the present invention includes a hot water storage tank and a housing that accommodates the hot water storage tank, and the housing includes a first member having a wall, and a second member positioned above the first member; And the second member has an outer portion located outside the wall and an inner portion located inside the wall, and at least a part of the inner portion protrudes so as to be far from the wall. Is.

  According to the hot water storage type water heater of the present invention, it is possible to suppress the dew condensation water inside the casing that houses the hot water storage tank from leaking to the outside of the casing.

It is a perspective view which shows the hot water storage type water heater of Embodiment 1 of this invention. It is a perspective view which shows the other example of the hot water storage type water heater of Embodiment 1 of this invention. It is sectional drawing which cut | disconnected the hot water storage type water heater shown in FIG. 1 by the plane perpendicular | vertical with respect to a horizontal surface. It is sectional drawing to which a part of FIG. 3 was expanded. It is sectional drawing which shows the junction part of the side plate and top plate of a housing | casing with which the hot water storage type water heater of Embodiment 2 of this invention is provided. It is sectional drawing which shows the junction part of the side plate and top plate of a housing | casing with which the hot water storage type water heater of Embodiment 3 of this invention is provided. It is sectional drawing which cut | disconnected the lower part of the housing | casing of the hot water storage type water heater of Embodiment 4 of this invention by the plane perpendicular | vertical with respect to a horizontal surface. It is sectional drawing which cut | disconnected the lower part of the housing | casing of the hot water storage type water heater of Embodiment 5 of this invention by the plane perpendicular | vertical with respect to a horizontal surface. It is a see-through | perspective perspective view of the corner | angular part of the top plate of the housing | casing with which the hot water storage type water heater of Embodiment 6 of this invention is provided. It is sectional drawing which cut | disconnected the corner | angular part of the top plate of the housing | casing with which the hot water storage type water heater of Embodiment 6 of this invention is equipped with the horizontal surface.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the element which is common in each figure, and the overlapping description is abbreviate | omitted.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing a hot water storage type water heater according to Embodiment 1 of the present invention. A hot water storage type water heater 1 shown in FIG. 1 includes a substantially cylindrical hot water storage tank 2 and a housing 3 that accommodates the hot water storage tank 2. The housing 3 is fixed to the ground, a pedestal or the like via a plurality of legs (not shown). Inside the hot water storage tank 2, hot water heated by a heat source (not shown) can be stored on the upper side, and water supplied from a water source such as tap water can be stored on the lower side. The upper hot water and the lower water in the hot water storage tank 2 are stored without being mixed due to a specific gravity difference. The heat source may be anything such as a heat pump device, an electric heater, a solar water heater, a combustion boiler, or a combination thereof. In the present embodiment, the illustration of the heat insulating material covering the hot water storage tank 2 is omitted. Various types of pipes, pumps, heat exchangers, valves, and the like may be provided inside the housing 3, but these are also omitted from illustration.

  The outer shape of the housing 3 shown in FIG. 1 is generally a rectangular parallelepiped. The housing 3 includes a side plate 4 that forms a side surface of the housing 3 and a top plate 5 that forms an upper surface of the housing 3. The side surface of the housing 3 is a surface perpendicular to the horizontal plane and surrounding the hot water storage tank 2. The side surface of the housing 3 shown in FIG. 1 is a plane. The side plate 4 has a flat wall perpendicular to the horizontal plane. The outer shape of the top plate 5 as viewed from above is a rectangle. In the first embodiment, the side plate 4 corresponds to the first member. The top plate 5 corresponds to a second member located above the first member (side plate 4).

  FIG. 2 is a perspective view showing another example of the hot water storage type water heater 1 according to Embodiment 1 of the present invention. The outer shape of the housing 3 provided in the hot water storage type water heater 1 shown in FIG. 2 is generally cylindrical. The housing 3 includes a side plate 4 that forms a side surface of the housing 3 and a top plate 5 that forms an upper surface of the housing 3. The side surface of the housing 3 shown in FIG. 1 is a cylindrical surface. The side plate 4 has a cylindrical wall perpendicular to the horizontal plane. The outer shape of the top plate 5 viewed from above is circular. In the following description, the case 3 having the shape shown in FIG. 1 will be described as an example, but the present invention can be similarly applied to the case 3 having the shape shown in FIG.

  FIG. 3 is a cross-sectional view of the hot water storage type water heater 1 shown in FIG. 1 cut along a plane perpendicular to the horizontal plane. As shown in FIG. 3, the top plate 5 includes outer portions 5 a and 5 b positioned outside the upper end portion of the wall of the side plate 4 and inner portions 5 d and 5 e positioned inside the upper end portion of the wall of the side plate 4. Prepare. Since the top plate 5 includes the outer portions 5 a and 5 b, it is possible to suppress rainwater from entering the inside of the housing 3 through the gap between the top plate 5 and the side plate 4. The housing 3 further includes a bottom plate 6 that forms the bottom surface of the housing 3. The bottom plate 6 includes a wall 6a. The wall 6 a extends upward at the peripheral edge of the bottom plate 6. The lower end of the side plate 4 is located outside the edge (wall 6a) of the bottom plate 6. Thereby, rain water can be prevented from entering the inside of the housing 3 from the gap between the side plate 4 and the bottom plate 6.

  As a part of the heat of the hot water storage tank 2 passes through the heat insulating material, the air inside the housing 3 is warmed. The warmed air rises inside the housing 3 and gathers inside the top plate 5. When the outside air temperature is lower than the temperature inside the top plate 5, the condensed water 20 may adhere to the inner surface of the top plate 5.

  FIG. 4 is an enlarged cross-sectional view of a part of FIG. FIG. 4 shows the joint between the side plate 4 and the top plate 5. As shown in FIG. 4, the outer portion 5a of the top plate 5 is located further outside the outer portion 5b. The lower end portion of the outer portion 5a and the lower end portion of the outer portion 5b are connected via a bent portion 5c. The bent portion 5c is bent in an arc shape. The outer portion 5b and the inner portion 5d sandwich the upper end portion of the side plate 4 wall. Thereby, the positional relationship of the top plate 5 and the side plate 4 can be reliably held at an appropriate position. The upper end portion of the outer portion 5b and the upper end portion of the inner portion 5d are connected via a bent portion 5f. The bent portion 5f is bent in an arc shape.

  The inner portion 5e protrudes toward the inside of the housing 3 so that the distance from the wall of the side plate 4 is increased. The lower end portion of the inner portion 5d and the base end portion of the inner portion 5e are connected via a bent portion 5g. The bending part 5g is bent substantially at a right angle. The inner portion 5e protrudes substantially in the horizontal direction.

  A space serving as a water receiving portion 5h is formed between the outer portion 5a and the outer portion 5b. When the condensed water 20 adhering to the inner surface of the top plate 5 flows along the inner surface to the outer peripheral portion of the top plate 5, the condensed water 20 first accumulates in the receiving portion 5h. When the dew condensation water 20 overflows from the receiving part 5h, the dew condensation water 20 flows along the inner parts 5d and 5e and falls from the tip of the inner part 5e. The tip of the inner portion 5 e is separated from the inner wall of the side plate 4. For this reason, the dew condensation water 20 that has dropped from the tip of the inner portion 5 e does not contact the inner wall of the side plate 4. As a result, it is possible to suppress the condensed water 20 from falling along the inner wall of the side plate 4.

  When the condensed water 20 falls along the inner wall of the side plate 4, the condensed water 20 may leak to the outside of the housing 3 through the gap between the lower end portion of the side plate 4 and the bottom plate 6. In that case, the user may misunderstand that the water leaks from the piping inside the housing 3 or the hot water storage tank 2. According to the first embodiment, it is possible to suppress the condensed water 20 from leaking outside the housing 3 by suppressing the condensed water 20 from falling along the inner wall of the side plate 4. For this reason, it can prevent that a user misunderstands that.

  In the first embodiment, the outer portions 5a and 5b and the inner portions 5d and 5e are integrally formed by bending a metal plate. Thereby, the outer parts 5a and 5b and the inner parts 5d and 5e can be formed at low cost.

  In the first embodiment, by providing the top plate 5 with the receiving portion 5h that stores the dew condensation water 20, the dew condensation water 20 adhering to the inner surface of the top plate 5 is more reliably suppressed from adhering to the inner wall of the side plate 4. it can. For this reason, it can suppress more reliably that the dew condensation water 20 falls along the inner wall of the side plate 4. FIG. However, the effects described above can be obtained even without the receiving portion 5h.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described with reference to FIG. 5. The description will focus on the differences from the first embodiment described above, and the same or corresponding parts will be denoted by the same reference numerals. Is omitted. FIG. 5 is a cross-sectional view showing a joint portion between the side plate 4 and the top plate 5 of the housing 3 provided in the hot water storage type water heater 1 according to Embodiment 2 of the present invention.

  The second embodiment is the same as the first embodiment except that the top plate 5 further includes an inner portion 5i and a bent portion 5j. As shown in FIG. 5, the inner portion 5 i protrudes toward the inside of the housing 3 so that the distance from the wall of the side plate 4 is increased. The proximal end portion of the inner portion 5i and the distal end portion of the inner portion 5e are connected via a bent portion 5j. The inner portion 5i is inclined so that the position of the tip is lower than the position of the base end.

  When the condensed water 20 accumulated in the receiving portion 5h overflows, the condensed water 20 flows along the inner portions 5d, 5e, and 5i, and falls from the tip of the inner portion 5i. The tip of the inner portion 5 i is separated from the inner wall of the side plate 4. For this reason, the dew condensation water 20 dropped from the tip of the inner portion 5 i does not contact the inner wall of the side plate 4. As a result, it is possible to suppress the condensed water 20 from falling along the inner wall of the side plate 4.

  In the present embodiment, by providing the inner portion 5 i inclined downward, the dew condensation water 20 that has flowed along the inner portion 5 i falls obliquely in a direction further away from the inner wall of the side plate 4. For this reason, it can suppress more reliably that the dew condensation water 20 adheres to the inner wall of the side plate 4. FIG.

Embodiment 3 FIG.
Next, a third embodiment of the present invention will be described with reference to FIG. 6. The description will focus on the differences from the first embodiment described above, and the same or corresponding parts will be denoted by the same reference numerals. Is omitted. FIG. 6 is a cross-sectional view showing a joint portion between the side plate 4 and the top plate 5 of the housing 3 provided in the hot water storage type water heater 1 according to Embodiment 3 of the present invention.

  The third embodiment is the same as the first embodiment except that the top plate 5 includes an inner portion 5k and a bent portion 5m instead of the inner portions 5d and 5e and the bent portions 5f and 5g of the first embodiment. It is the same. As shown in FIG. 6, the inner portion 5 k protrudes toward the inside of the housing 3 so that the distance from the wall of the side plate 4 is increased. The base end part of the inner part 5k and the upper end part of the outer part 5b are connected via the bending part 5m. The bent portion 5m is bent at an acute angle. The inner portion 5k is inclined so that the position of the tip is lower than the position of the base end.

  When the condensed water 20 accumulated in the receiving portion 5h overflows, the condensed water 20 flows along the inner portion 5k and falls from the tip of the inner portion 5k. The tip of the inner portion 5k is separated from the inner wall of the side plate 4. For this reason, the dew condensation water 20 that has dropped from the tip of the inner portion 5 k does not contact the inner wall of the side plate 4. As a result, it is possible to suppress the condensed water 20 from falling along the inner wall of the side plate 4.

  In the present embodiment, because the inner portion 5k is inclined downward, the condensed water 20 that has flowed along the inner portion 5k falls obliquely in a direction further away from the inner wall of the side plate 4. For this reason, it can suppress more reliably that the dew condensation water 20 adheres to the inner wall of the side plate 4. FIG.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described with reference to FIG. 7. The description will focus on the differences from the first embodiment described above, and the same or corresponding parts will be denoted by the same reference numerals. Is omitted. FIG. 7 is a cross-sectional view of the lower part of the casing 3 of the hot water storage type water heater 1 according to Embodiment 4 of the present invention cut along a plane perpendicular to the horizontal plane. In the fourth embodiment, the bottom plate 6 corresponds to the first member. The side plate 4 corresponds to a second member located above the first member (bottom plate 6).

  As shown in FIG. 7, the bottom plate 6 includes a wall 6a. The wall 6 a extends upward at the edge of the bottom plate 6. The side plate 4 includes outer portions 4 a and 4 b positioned outside the wall 6 a of the bottom plate 6 and inner portions 4 d and 4 e positioned inside the wall 6 a of the bottom plate 6. Since the side plate 4 includes the outer portions 4 a and 4 b, rain water can be prevented from entering the housing 3 through the gap between the side plate 4 and the bottom plate 6. The outer portion 4a of the side plate 4 is located further outside the outer portion 4b. The lower end portion of the outer portion 4a and the lower end portion of the outer portion 4b are connected via a bent portion 4c. The bent portion 4c is bent in an arc shape. The outer portion 4b and the inner portion 4d sandwich the wall 6a of the bottom plate 6. Thereby, the positional relationship between the side plate 4 and the bottom plate 6 can be reliably held at an appropriate position. The upper end portion of the outer portion 4b and the upper end portion of the inner portion 4d are connected via a bent portion 4f. The bent portion 4f is bent in an arc shape.

  The inner portion 4e protrudes toward the inside of the housing 3 so that the distance from the wall 6a of the bottom plate 6 is increased. The lower end part of the inner part 4d and the base end part of the inner part 4e are connected via a bent part 4g. The bent portion 4g is bent at a substantially right angle. The inner portion 4e protrudes in a substantially horizontal direction.

  A space serving as a water receiving portion 4h is formed between the outer portion 4a and the outer portion 4b. When the outside air temperature is lower than the temperature inside the side plate 4, water may be condensed on the inner surface of the side plate 4. When the condensed water 20 attached to the inner surface of the side plate 4 falls along the inner surface, the condensed water 20 first accumulates in the receiving portion 4h. When the dew condensation water 20 overflows from the receiving part 4h, the dew condensation water 20 flows along the inner parts 4d and 4e and falls from the tip of the inner part 4e. The tip of the inner portion 4 e is separated from the inner wall of the wall 6 a of the bottom plate 6. For this reason, the dew condensation water 20 that has dropped from the tip of the inner portion 4 e does not contact the inner wall of the wall 6 a of the bottom plate 6.

  When the condensed water 20 comes into contact with the inner wall of the wall 6 a of the bottom plate 6, the condensed water 20 may leak to the outside of the housing 3 through the gap between the bottom plate 6 and the side plate 4 due to surface tension. In that case, the user may misunderstand that the water leaks from the piping inside the housing 3 or the hot water storage tank 2. According to the present embodiment, it is possible to prevent the condensed water 20 from leaking to the outside of the housing 3 by suppressing the condensed water 20 from contacting the inner wall of the wall 6 a of the bottom plate 6. For this reason, it can prevent that a user misunderstands that.

  In the present embodiment, the outer portions 4a and 4b and the inner portions 4d and 4e are integrally formed by bending a metal plate. Thereby, the outer parts 4a and 4b and the inner parts 4d and 4e can be formed at low cost.

  In the present embodiment, by providing the side plate 4 with the receiving portion 4h that stores the dew condensation water 20, the dew condensation water 20 adhering to the inner surface of the side plate 4 is more reliably prevented from adhering to the inner wall of the wall 6a of the bottom plate 6. it can. However, the effects described above can be obtained even without the receiving portion 4h.

Embodiment 5 FIG.
Next, a fifth embodiment of the present invention will be described with reference to FIG. 8. The description will focus on the differences from the fourth embodiment described above, and the same or corresponding parts will be denoted by the same reference numerals. Is omitted. FIG. 8 is a cross-sectional view of the lower part of the casing 3 of the hot water storage type hot water heater 1 according to Embodiment 5 of the present invention cut along a plane perpendicular to the horizontal plane. In the fifth embodiment, the bottom plate 6 corresponds to a first member, and the side plate 4 corresponds to a second member positioned on the upper side of the first member (bottom plate 6).

  The fifth embodiment is the same as the fourth embodiment except that the side plate 4 includes an inner portion 4k and a bent portion 4m instead of the inner portions 4d and 4e and the bent portions 4f and 4g of the fourth embodiment. It is. As shown in FIG. 8, the inner portion 4k protrudes toward the inside of the housing 3 so that the distance from the wall 6a of the bottom plate 6 is increased. The base end part of the inner part 4k and the upper end part of the outer part 4b are connected via the bending part 4m. The bent portion 4m is bent at an acute angle. The inner portion 4k is inclined so that the position of the tip is lower than the position of the base end.

  When the dew condensation water 20 accumulated in the receiving part 4h overflows, the dew condensation water 20 flows along the inner part 4k and falls from the tip of the inner part 4k. The tip of the inner portion 4k is separated from the inner wall of the wall 6a of the bottom plate 6. For this reason, the dew condensation water 20 that has dropped from the tip of the inner portion 4k does not contact the inner wall of the wall 6a of the bottom plate 6. In the fifth embodiment, the inner portion 4k is inclined downward, so that the condensed water 20 that has flowed along the inner portion 4k falls obliquely in a direction further away from the inner wall of the wall 6a of the bottom plate 6. For this reason, it can suppress more reliably that it adheres to the inner wall of the wall 6a of the baseplate 6. FIG.

Embodiment 6 FIG.
Next, the sixth embodiment of the present invention will be described with reference to FIG. 9 and FIG. 10. The difference from the above-described first embodiment will be mainly described, and the same parts or corresponding parts will be denoted by the same reference numerals. The description is omitted. The outer shape of the housing 3 of the hot water storage type hot water heater 1 according to the sixth embodiment is generally a rectangular parallelepiped, as in FIG.

  FIG. 9 is a perspective view of the corner of the top plate 5 of the housing 3 provided in the hot water storage type water heater 1 according to the sixth embodiment. As shown in FIG. 9, the corner portion of the top plate 5 includes a portion where the outer portion 5b, the bent portion 5c, the inner portions 5d and 5e, the bent portions 5f and 5g, and the receiving portion 5h are not formed.

  FIG. 10 is a cross-sectional view in which a corner portion of the top plate 5 of the housing 3 provided in the hot water storage type water heater 1 of the sixth embodiment is cut along a horizontal plane. As shown in FIG. 10, a sealing material is provided at a corner portion of the top plate 5 where the outer portion 5b, the bent portion 5c, the inner portions 5d and 5e, the bent portions 5f and 5g, and the receiving portion 5h are not formed. 7 is installed. The sealing material 7 is in close contact with the outer portion 5b, the bent portion 5c, the inner portions 5d and 5e, the end surfaces of the bent portions 5f and 5g, and the inner surface of the outer portion 5a. In the sixth embodiment, since the sealing material 7 is provided, it is possible to reliably prevent the condensed water 20 accumulated in the receiving portion 5 h from leaking from the corner portion of the top plate 5 to the outside of the housing 3. FIG. 9 shows a state before the sealing material 7 is installed.

  As mentioned above, although embodiment of this invention was described, in this invention, it is possible to implement combining the characteristic of several embodiment mentioned above arbitrarily.

DESCRIPTION OF SYMBOLS 1 Hot water storage type water heater, 2 Hot water storage tank, 3 Housing | casing, 4 Side plate, 4a, 4b Outer part, 4c Bending part, 4d, 4e Inner part, 4f, 4g Bending part, 4h Receiving part, 4k Inner part, 4m Bending part 5 top plate, 5a, 5b outer portion, 5c bent portion, 5d, 5e inner portion, 5f, 5g bent portion, 5h receiving portion, 5i inner portion, 5j bent portion, 5k inner portion, 5m bent portion, 6 bottom plate, 6a Wall, 7 Sealing material, 20 Condensed water

Claims (6)

A hot water storage tank,
A housing for housing the hot water storage tank;
With
The housing includes a first member having a wall, and a second member located above the first member,
The second member has an outer portion located outside the wall and an inner portion located inside the wall;
A hot water storage type hot water supply device in which at least a part of the inner portion protrudes so as to be far from the wall. The first member is a member having a side surface of the housing,
The hot water storage type water heater according to claim 1, wherein the second member is a member having an upper surface of the housing. The first member is a member having a bottom surface of the housing,
The hot water storage type water heater according to claim 1, wherein the second member is a member having a side surface of the housing.   The hot water storage type hot water supply apparatus according to any one of claims 1 to 3, wherein at least a part of the protruding portion of the inner portion is inclined so that a tip position is lower than a base end position.   The hot water storage type hot water heater according to any one of claims 1 to 4, wherein the outer portion and the inner portion are formed by bending a metal plate.   The hot water storage type hot water supply device according to any one of claims 1 to 5, wherein the second member has a receiving portion for collecting water adhering to the inner surface of the second member.

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