JP6899718B2 - Hot water heater - Google Patents

Description

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

Conventionally, a hot water supply device suspended on the ceiling of a building is known (see Patent Document 1 below). In this product, the main body of the water heater, which is composed of a gas burner and a heat exchanger, is housed in a rectangular parallelepiped main body case. In the main body case, the back plate is fixed to the lower surface of the ceiling of the building in a posture in which the shortest side is in the height direction.

However, in the hot water supply device suspended from the ceiling, the lower surface of the main body case is opened by removing the lid that closes the lower surface of the main body case to perform internal maintenance work. Therefore, when performing maintenance work, the worker must look up at the inside of the main body case and perform the work, which forces an unreasonable posture and reduces work efficiency.

Therefore, in a hot water supply device suspended from the ceiling, it is conceivable that the hot water supply device can be opened and closed with one side surface on the side intersecting in the height direction as the front surface. According to this, the operator does not have to take a posture of looking up at the inside of the main body case, and can perform the maintenance work in a relatively comfortable posture.

Japanese Unexamined Patent Publication No. 2003-185165

However, when one side surface of the main body case intersecting in the height direction is opened to make an opening for maintenance, the opening area is larger than that of the case where the lower surface of the main body case is opened to make an opening for maintenance. Also becomes smaller. If the opening for maintenance is small, it is difficult for tools and workers to insert it all the way into the main body case. In particular, the relatively large main parts that make up the main body of the water heater are placed inside the main body case. There is an inconvenience that workability is poor when removing or installing from. In addition, in order to allow tools and workers' hands to enter deep into the main body case, it is necessary to increase the size of the main body case in order to form a large gap between the main body of the water heater and the main body case. No miniaturization can be expected.

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

In order to achieve such an object, the present invention includes a hot water supply device main body having a gas burner and a heat exchanger heated by the combustion exhaust of the gas burner, and a rectangular body case for accommodating the hot water supply device main body. In a hot water supply device installed by selecting one of the posture in which the shortest side of the main body case is in the height direction and the posture in which the top and bottom are inverted , the main body case is installed from four side plates. A square tubular body, a bottom plate that closes the lower surface of the body, a top plate that closes the upper surface of the body, and a side plate located on the side intersecting the height direction of the body. An opening having a size that allows the hot water supply device main body to be taken in and out by removing the hot water supply device main body, and a lower rail extending on the inner surface of the lower surface plate along the direction in which the hot water supply device main body is taken in and out from the opening. And an upper rail extending along the direction of taking in and out of the hot water supply device main body from the opening on the inner surface of the upper surface plate, and the hot water supply device main body slides along the lower rail. It is characterized by including a moving member and an upper sliding member that slides along the upper rail.

The hot water supply device 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 the hot water supply device main body can be taken in and out by removing one of the four side plates constituting the body. An opening is formed. By installing the hot water supply device with the opening as the front surface, for example, a worker performing maintenance can perform the work without taking an unreasonable posture.

The hot water supply device of the present invention further includes a lower rail and an upper rail, and the hot water supply device 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 device main body. It has become like. As a result, the hot water supply device main body can be pulled out and maintenance work of the hot water supply device main body can be performed outside the main body case. Therefore, not only the maintenance work becomes easy, but also, for example, it is not necessary to form a large gap between the main body of the hot water supply device and the main body case, and it is possible to prevent the hot water supply device from becoming large in size.

Further, in the hot water supply device of the present invention, when the main body of the hot water supply device is housed inside 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. Therefore, the lower surface plate and the upper surface plate of the main body case are in a state of being supported by the hot water supply device main body from the inside. That is, the hot water supply device of the present invention is less likely to be distorted because the lower surface plate and the upper surface plate of the main body case are provided with the lower rail and the upper rail, and further, the lower sliding member and the upper portion of the hot water supply device main body. The sliding member is in contact with the lower rail and the upper rail to impart even higher rigidity to the lower surface plate and the upper surface plate of the main body case.

Therefore, for example, even if an impact is applied to the main body case due to a drop during transportation of the hot water supply device, the rigidity of the lower surface plate and the upper surface plate is improved as in the above configuration, so that the main body case is distorted. Can be prevented.

Explanatory side view which shows the installation state of the hot water supply device in embodiment of this invention. Explanatory perspective view showing the state where the front panel is removed. Explanatory drawing which shows the main part of the water heater main body in cross-sectional view. Explanatory perspective view which shows the moving state of the lower sliding member with respect to the lower rail by omitting the water heater main body. Explanatory perspective view which shows the moving state of the water heater main body with respect to the upper rail by omitting the main body case. The cross-sectional explanatory view of the lower rail and the lower sliding member. The cross-sectional explanatory view of the upper rail and the 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 unit 4 which is a space formed in the ceiling 3 of the veranda 2 as shown in FIG. Has been done. The storage unit 4 is provided with a mounting plate 5 on which the hot water supply device 1 is mounted. The left side and the front side of the storage portion 4 in the drawing are open, and the right side and the back side in the drawing are closed by a wall surface.

As shown in FIG. 2, the hot water supply device 1 includes a rectangular parallelepiped main body case 6. The hot water supply device main body 7 is housed inside the main body case 6.

As shown in FIG. 3, the hot water supply device main body 7 is configured by arranging a combustion fan 8, a gas burner 9, a combustion casing 10, a heat exchanger 11, and an air supply / exhaust pipe 12 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 in the height direction, and one side surface on the side intersecting in 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 front to the left in the drawing.

The main body case 6 includes a square tubular body portion 60 (see FIG. 2) composed of four side plates, and a lower surface plate 61 that closes the lower surface of the body portion 60 as shown in FIGS. 3 and 4. 2 As shown in FIG. 4, a top plate 62 that closes the upper surface of the body portion 60 is provided.

As shown in FIG. 2, the body portion 60 includes a front panel 25 that detachably covers the front surface of the body portion 60 with screws, an exhaust side plate 63 on which an air supply / exhaust pipe 12 is arranged, and a fuel gas supply pipe 14. A connection side plate 64 in which 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, etc. to a hot water supply circuit (not shown) is arranged, and a bottom plate 61 as shown in FIG. It is composed of a back plate 65 that connects the rear end edge and the rear end edge of the top plate 62.

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

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 the side plates having the shortest length in the horizontal direction.

As shown in FIG. 2, the main body case 6 is formed with an opening 22 that opens the entire front surface. The opening 22 is covered with the front panel 25, and the four corners thereof are fixed to the main body case 6 by being screwed. By removing the screws at the four corners of the front panel 25 and removing it from the main body case 6, the front side of the hot water supply device main body 7 is exposed from the opened opening 22.

If the water heater is installed on the ceiling, such as a conventional water heater, the worker is often forced to take a difficult posture during maintenance work. In the hot water supply device 1 of the present embodiment, the front panel 25 can be removed to form an opening 22 in the lateral direction of the main body case 6. As a result, the operator during maintenance work can work in a comfortable posture as compared with the conventional water heater in which the lower plate is removed and opened downward.

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 water heater main body 7 are slidably held on the lower rails 70, respectively.

As shown in FIG. 3 and FIG. 5 in 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 part of the hot water supply device main body 7 is slidably held on the upper rail 72.

The lower rail 70 is composed of a protrusion 70a formed on the lower surface plate 61 and extending in the front-rear direction, and a pressing member 70b fixed to the lower surface plate 61 with screws so as to be enlarged and viewed in cross section in FIG. There is. The lower sliding member 71 is a plate-shaped member fixed to the water heater main body 7 with screws, 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 70a receives the load of the hot water supply device main body 7 via the lower sliding member 71, but the top of the protruding portion 70a, which is a relatively small area, is in sliding contact with the lower sliding member 71. Due to the low frictional resistance, the lower sliding member 71 slides smoothly.

The upper rail 72 has a connecting portion 72a that is screwed and connected to the upper surface plate 62 and a pair of side pieces that face each other and are integrally connected to both side edges of the connecting portion 72a so as to be enlarged and viewed in cross section in FIG. It is provided with 72b and is formed in a groove shape that is open 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 72b 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. As a result, the hot water supply device main body 7 can be pulled out from the main body case 6 to easily perform maintenance work.

Further, as shown in FIGS. 3 and 4, the main body case 6 is made difficult to bend because the lower rail 70 and the upper rail 72 (see FIG. 3) are provided. Further, as shown in FIG. 3, when the hot water supply device main body 7 is housed inside the main body case 6, the hot water supply device main body 7 is sandwiched between the lower rail 70 and the upper rail 72 from above and below. 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.

Further, although not shown, the hot water supply device 1 of the present embodiment can be installed upside down. That is, referring to FIG. 2, the upper surface plate 62 is positioned on the lower side and the lower surface plate 61 is located on the upper side without changing the front-rear direction, and the left and right positions of the air supply / exhaust pipe 12 and the connection terminal portion 26 are changed. It is possible. In this case as well, in the hot water supply device 1 of the present embodiment, the lower rail 70 and the upper rail 72 are only turned upside down, and the hot water supply device main body 7 can be pulled out without any trouble, and high workability during maintenance is achieved. Is maintained.

In the hot water supply device 1 of the present embodiment, an example in which the hot water supply device 1 is installed on the ceiling 3 of the veranda 2 is shown. It can also be installed on the ceiling side of the kitchen or in the storage space under the sink.

1 ... hot water supply device, 7 ... hot water supply device main body, 6 ... main body case, 9 ... gas burner, 11 ... heat exchanger, 22 ... opening, 25 ... front panel (side plate), 60 ... body, 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 device main body having a gas burner and a heat exchanger heated by the combustion exhaust of the gas burner, and a rectangular parallelepiped main body case for accommodating the hot water supply device main body are provided, and the shortest side of the main body case is in the height direction. In the hot water supply device installed by selecting one of the posture and the posture inverted upside down.
The main body case has a square tubular body portion composed of four side plates, a lower surface plate that closes the lower surface of the body portion, an upper surface plate that closes the upper surface of the body portion, and the body portion in the height direction. An opening having a size that allows the water heater main body to be taken in and out, which is formed by removing one side plate located on the intersecting side, and a direction in which the hot water heater main body is taken in and out from the opening on the inner surface of the lower surface plate. A lower rail extending along the above surface plate and an upper rail extending along the direction of taking in and out of the water heater main body from the opening on the inner surface of the upper surface plate are provided.
The water heater main body includes a lower sliding member that slides along the lower rail and an upper sliding member that slides along the upper rail.

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