JP2019015430A - Water heater - Google Patents

Abstract

To provide a water heater which is installed in a posture at which a shortest side of a body case is set to a height direction and improves workability during maintenance without enlarging the body case even if an opening for the maintenance is relatively small.SOLUTION: A body case 6 having a rectangular parallelepiped shape houses a water heater body 7 having a gas burner 9 and a heat exchanger 11. The water heater 1 is installed in a posture at which a shortest side of the body case 6 is set to a height direction. The body case 6 includes: a body part 60; a lower surface plate 61; an upper surface plate 62; an opening 22 formed by removing one side plate 25 of the body part 60; a lower rail 70 extending on the lower surface plate 61; and an upper rail 72 extending on the upper surface plate 62. The water heater body 7 includes: a lower slide member 71 which slides along the lower rail 70; and an upper slide member 73 which slides along the upper rail 72.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a hot water supply apparatus installed in a posture in which the shortest side of the main body case is in the height direction.

  Conventionally, a hot water supply apparatus is known that is suspended from the ceiling of a building (see Patent Document 1 below). In this apparatus, a hot water supply device body constituted by a gas burner and a heat exchanger is accommodated in a rectangular parallelepiped body case. The main body case is fixed to the lower surface of the ceiling of the building with the posture in which the shortest side is the height direction.

  However, the hot water supply apparatus hung on the ceiling is configured to open the lower surface of the main body case by removing the lid that closes the lower surface of the main body case, and to perform internal maintenance work. For this reason, when performing the maintenance work, the worker must work while looking up at the inside of the main body case, and is forced to take an unreasonable posture, thus lowering the work efficiency.

  In view of this, in a hot water supply apparatus suspended from a ceiling, it is conceivable that one side of the side intersecting the height direction can be opened and closed. According to this, the worker does not have to take a posture looking up at the inside of the main body case, and can perform maintenance work with a relatively easy posture.

JP 2003-185165 A

  However, when one side of the main body case that intersects the height direction is opened and used as an opening for maintenance, the opening area is larger than when the lower surface of the main body case is opened and used as a maintenance opening. Becomes smaller. And if the opening for maintenance is small, it is difficult for the tool or the operator's hand to enter the interior of the main body case, and in particular, relatively large main parts among the parts constituting the main body of the hot water supply device are placed inside the main body case. There is an inconvenience that workability is poor when removing or attaching from the machine. In addition, in order to allow the tool and the operator's hand to enter the interior of the main body case, it is necessary to enlarge the main body case in order to form a large gap between the main body and the main body case. I can't expect downsizing.

  In view of the above points, the present invention provides a hot water supply device installed in a posture in which the shortest side of the main body case is in the height direction without increasing the size of the main body case even if the opening for maintenance is relatively small. An object of the present invention is to provide a hot water supply device capable of improving workability during maintenance.

  To achieve this object, the present invention comprises a hot water supply device main body having a gas burner and a heat exchanger heated by combustion exhaust of the gas burner, and a rectangular parallelepiped main body case for housing the hot water supply device main body, In the hot water supply apparatus installed in a posture in which the shortest side of the main body case is in the height direction, the main body case includes a quadrangular cylindrical body portion including four side plates, and a lower surface plate that closes a lower surface of the body portion. An opening having a size that allows insertion and removal of the hot water supply device main body formed by removing an upper surface plate that closes an upper surface of the body portion and a side plate that is located on a side that intersects the height direction of the body portion. A lower rail extending along the direction of the hot water supply device main body from the opening to the inner surface of the lower surface plate, and the direction of the hot water supply device main body from the opening to the inner surface of the upper surface plate In And the hot water supply device body includes a lower sliding member that slides along the lower rail and an upper sliding member that slides along the upper rail. It is characterized by.

  The hot water supply apparatus of the present invention is installed in a posture in which the shortest side of the main body case is in the height direction, and by removing one of the four side plates constituting the body part, the hot water supply apparatus main body can be taken in and out. An opening is formed. By installing the hot water supply device with the opening as the front surface, for example, an operator who performs maintenance can perform work without taking an unreasonable posture.

  The hot water supply apparatus of the present invention further includes a lower rail and an upper rail, and the hot water supply apparatus main body can be pulled out from the opening by slidingly guiding the lower sliding member and the upper sliding member of the hot water supply apparatus main body. It is like that. Thereby, the hot water supply apparatus main body can be pulled out and the maintenance operation of the hot water supply apparatus main body can be performed outside the main body case. Therefore, not only the maintenance work is facilitated, but also, for example, it is not necessary to form a large gap between the hot water supply device main body and the main body case, and an increase in size of the hot water supply device can be prevented.

  Furthermore, in the hot water supply apparatus of the present invention, when the hot water supply apparatus main body is accommodated in the main body case, the lower sliding member and the upper sliding member are in contact with the lower rail and the upper rail, respectively. For this reason, the lower surface plate and the upper surface plate of the main body case are supported by the hot water supply device main body from the inside thereof. That is, the hot water supply device of the present invention is less likely to be distorted because the lower rail and the upper rail are provided on the lower surface plate and the upper surface plate of the main body case. The sliding member is in contact with the lower rail and the upper rail, and gives higher rigidity to the lower surface plate and the upper surface plate of the main body case.

  Therefore, even when an impact is applied to the main body case due to, for example, dropping during transportation of the hot water supply device, the rigidity of the lower surface plate and the upper surface plate is improved as described above, so that distortion of the main body case occurs. Can be prevented.

Explanatory side view which shows the installation state of the hot water supply apparatus in embodiment of this invention. The explanatory perspective view which shows the state which removed the front panel. Explanatory drawing which shows the principal part of a hot-water supply apparatus main body by cross-sectional view. The explanatory perspective view which omits the hot-water supply apparatus main body and shows the movement state of the lower sliding member with respect to a lower rail. The explanatory perspective view which omits a main body case and shows the movement state of the hot water supply apparatus main body with respect to an upper rail. Cross-sectional explanatory drawing of a lower rail and a lower sliding member. Cross-sectional explanatory drawing of an upper rail and an upper sliding member.

  An embodiment of the present invention will be described with reference to the drawings. The hot-water supply device 1 of the present invention is a so-called ceiling-mounted hot-water supply device, and the hot-water supply device 1 in the present embodiment is installed in a storage portion 4 that is a space formed in the ceiling 3 of the veranda 2 as shown in FIG. Has been. The storage unit 4 is provided with a mounting plate 5 on which the hot water supply device 1 is mounted. The storage part 4 is open on the left side and the near side in the figure, and closed on the right side and the back side in the figure with wall surfaces.

  As shown in FIG. 2, the hot water supply apparatus 1 includes a rectangular parallelepiped main body case 6. A hot water supply device body 7 is accommodated in the body case 6.

  As shown in FIG. 3, the hot water supply apparatus body 7 includes a combustion fan 8, a gas burner 9, a combustion housing 10, a heat exchanger 11, and a supply / exhaust cylinder 12 arranged side by side.

  As shown in FIGS. 1 and 2, the main body case 6 is installed in a posture in which the shortest side is the height direction, and one side surface on the side intersecting the height direction is the front surface. In the installed state of the hot water supply device 1 shown in FIG. 1, the main body case 6 of the hot water supply device 1 faces the left side in the drawing.

  The main body case 6 includes a rectangular tubular body 60 (see FIG. 2) constituted by four side plates, a lower surface plate 61 for closing the lower surface of the body 60, as shown in FIGS. 2 to 4, an upper surface plate 62 that closes the upper surface of the body portion 60 is provided.

  As shown in FIG. 2, the body 60 includes a front panel 25 that removably covers the front surface of the body 60 with screws, an exhaust side plate 63 on which the air supply / exhaust cylinder 12 is disposed, a fuel gas supply pipe 14, A connection side plate 64 provided with a plurality of connection terminal portions 26 for connecting each of the water supply pipe 16, the hot water discharge pipe 17, the circulation return pipe 19 and the like to a hot water supply circuit (not shown), and a lower face plate 61 as shown in FIG. The rear plate 65 connects the rear edge of the rear plate and the rear edge of the upper surface plate 62.

  That is, in the present embodiment, the four side plates constituting the body portion 60 are the front panel 25, the exhaust side plate 63, the connection side plate 64, and the back plate 65, all of which are rectangular plates having the shortest sides.

  The exhaust side plate 63 and the connection side plate 64 are both shorter in the horizontal direction than the front panel 25 and the back plate 65. That is, the exhaust side plate 63 and the connection side plate 64 are side plates having the shortest horizontal length.

  As shown in FIG. 2, the main body case 6 has an opening 22 that opens the entire front surface. The opening 22 is covered with the front panel 25 and fixed to the main body case 6 by screwing the four corners thereof. When the front panel 25 is removed from the main body case 6 by removing the screws at the four corners, the front side of the hot water supply apparatus main body 7 is exposed from the opened opening 22.

  When installed on the ceiling as in a conventional hot water supply device, the operator during maintenance work is often forced to work. The hot water supply device 1 of the present embodiment can form the opening 22 in the lateral direction of the main body case 6 by removing the front panel 25. Thereby, compared with the conventional hot water supply apparatus which removed the board of the lower surface and was made to open | release downward, the worker at the time of a maintenance work can work with an easy attitude | position.

  Further, as shown in FIGS. 3 and 4, the lower surface plate 61 is provided with a pair of lower rails 70 extending in parallel in the front-rear direction. A pair of lower sliding members 71 provided at the lower part of the hot water supply device body 7 are slidably held on the lower rail 70.

  As shown in FIG. 3 and FIG. 5 from which the main body case 6 is omitted, the upper surface plate 62 is provided with an upper rail 72 extending in the front-rear direction. An upper sliding member 73 provided on the upper portion of the hot water supply device body 7 is slidably held on the upper rail 72.

  As shown in an enlarged cross-sectional view in FIG. 6, the lower rail 70 includes a projecting portion 70 a formed in the lower surface plate 61 extending in the front-rear direction and a pressing member 70 b fixed to the lower surface plate 61 with screws. Yes. The lower sliding member 71 is a plate-like member fixed to the hot water supply apparatus main body 7 with a screw, and its tip is sandwiched between the protruding portion 70a and the pressing member 70b in a slidable state.

  In the lower rail 70, the protruding portion 70 a receives the load of the hot water supply device body 7 through the lower sliding member 71, but the top portion of the protruding portion 70 a that is a relatively small area is in sliding contact with the lower sliding member 71. Due to the small frictional resistance, the lower sliding member 71 slides smoothly.

  As shown in the enlarged cross-sectional view of FIG. 7, the upper rail 72 includes a connecting portion 72 a that is screwed and connected to the upper surface plate 62, and a pair of opposing side pieces that are integrally connected to both side edges of the connecting portion 72 a. 72b, and is formed in a groove shape opened downward. The upper sliding member 73 is held by the upper rail 72 in a slidable state so as to be sandwiched between the pair of side pieces 72 b of the upper rail 72.

  The water heater main body 7 is guided by the lower rail 70 and the upper rail 72 so as to be exposed from the opening 22 of the main body case 6. Thereby, the hot-water supply apparatus main body 7 can be pulled out from the main body case 6, and a maintenance operation | work can be performed easily.

  Further, as shown in FIGS. 3 and 4, the main body case 6 is difficult to bend due to the provision of the lower rail 70 and the upper rail 72 (see FIG. 3). Furthermore, as shown in FIG. 3, the hot water supply device body 7 is sandwiched from above and below by the lower rail 70 and the upper rail 72 when housed in the body case 6. According to this, the main body case 6 and the hot water supply device main body 7 are connected by the lower rail 70 and the upper rail 72, and the rigidity of the main body case 6 is improved.

  Moreover, although not shown in figure, the hot water supply apparatus 1 of this embodiment can be installed upside down. That is, referring to FIG. 2, without changing the front-rear direction, the upper surface plate 62 is positioned on the lower side and the lower surface plate 61 is positioned on the upper side, and the left and right positions of the air supply / exhaust cylinder 12 and the connection terminal portion 26 are changed. It is possible. Also in this case, the hot water supply device 1 of the present embodiment can pull out the hot water supply device body 7 without any troubles just by the lower rail 70 and the upper rail 72 being upside down, and has high workability during maintenance. Is maintained.

  In addition, although the example installed in the ceiling 3 of the veranda 2 was shown in the hot water supply apparatus 1 of this embodiment, although not shown in figure other than this, the hot water supply apparatus of this invention is an indoor ceiling back, a system, etc. It can also be installed in the storage space under the ceiling of the kitchen or under the sink.

  DESCRIPTION OF SYMBOLS 1 ... Hot water supply apparatus, 7 ... Hot water supply apparatus main body, 6 ... Main body case, 9 ... Gas burner, 11 ... Heat exchanger, 22 ... Opening part, 25 ... Front panel (side plate), 60 ... Trunk part, 62 ... Top plate, 61 ... bottom plate, 63 ... exhaust side plate (side plate), 64 ... connection side plate (side plate), 65 ... back plate (side plate), 70 ... lower rail, 71 ... lower sliding member, 72 ... upper rail, 73 ... upper sliding Element.

Claims (1)

A hot water supply apparatus main body having a gas burner and a heat exchanger heated by combustion exhaust of the gas burner, and a rectangular parallelepiped main body case for housing the hot water supply apparatus main body, the shortest side of the main body case being in the height direction In the water heater installed in the posture,
The main body case includes a quadrangular cylindrical body portion including four side plates, a lower surface plate that closes a lower surface of the body portion, an upper surface plate that closes an upper surface of the body portion, and a height direction of the body portion. An opening having a size that allows the hot water supply apparatus main body to be taken in and out formed by removing one side plate located on the intersecting side, and the direction of the hot water supply apparatus main body from the opening to the inner surface of the lower surface plate A lower rail extending along the upper surface plate, and an upper rail extending along the direction of the hot water supply apparatus main body from the opening to the inner surface of the upper surface plate,
The hot water supply apparatus main body includes a lower sliding member that slides along the lower rail, and an upper sliding member that slides along the upper rail.