JPH0561535B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is applicable to water heaters that supply hot water to kitchens, baths, etc., and hot water heaters that also heat water with hot water in addition to supplying hot water. The present invention relates to a piping connection device for a water heater that supplies hot water.

(Prior Art) Conventionally, the internal piping of a water heater that includes internal piping for water supply and internal piping for hot water that are connected to a heat exchanger, internal piping for supplying gas to a gas burner that heats the heat exchanger, and It is known that hot water is supplied by connecting the corresponding external piping for water supply, external piping for hot water supply, and external piping for gas supply to heat water with a heat exchanger, and in this case, piping connection work is required. For reasons such as ease of removal, the distance between the connecting ends of each internal pipe is generally set to match the distance between the connecting ends of each external pipe.

(Problem to be solved by the invention) In recent years, efforts have been made to make water heaters more compact and to centralize the various control devices built into the water heater in one place, and the connection ends of each internal pipe are concentrated in a small space. In such a case, the distance between the connecting ends of each internal piping is shorter than the distance between the connecting ends of each external piping, so the piping on the water heater side There are inconveniences in that connection work cannot be done using general tools such as spanners as in the past, and the connection between each internal pipe and each external pipe is concentrated in one place, which increases the load on the water heater. This is accompanied by the inconvenience of concentrating on the connection point.

(Means for Solving the Problems) The present invention avoids the inconvenience of water heaters in which the connection ends of each internal pipe are arranged centrally in a small space. Connect the internal piping for water supply, internal piping for hot water supply, and internal piping for gas supply to the gas burner that heats the heat exchanger so that their connecting ends face the bottom of the water heater body case. A piping connection device interposed between a hot water supply device equipped with a hot water supply device, and external piping for water supply, external piping for hot water supply, and external piping for gas supply connected to each internal piping of the water heating device, respectively. , a box body, and a plurality of joint pipes housed in the box body, each joint pipe being connected between each of the internal pipes and each external pipe, and each joint pipe is connected between each of the internal pipes and each external pipe, and the joint pipes are connected between the internal pipes and the external pipes. Connection ends with each internal pipe are arranged centrally at the surface where the box overlaps with the water heater main body case, and connection ends with the external pipe are distributed at the connection surface with the external pipe of the box, Furthermore, the overlapping surface comprises at least a distance between the outer connecting ends of the joint tubes distributed at the connecting surface.

(Function) The pipe connection device of the present invention is interposed between a water heater equipped with each internal pipe and each external pipe connected to each internal pipe, and connects each internal pipe and each external pipe.

At this time, the joint tube stored in the box body is
Connection ends with each internal piping are arranged centrally on the overlapping surface of the box, and correspond to each internal piping of the water heater. In addition, on the connection surface, connection ends with each external pipe are distributed and correspond to each external pipe. When connecting each joint pipe to each internal pipe, the overlapping surface of the box overlaps with the bottom surface of the main body case of the water heater.

The overlapping surface of this box has at least the distance between the two outer connecting ends of the joint pipes distributed at the connection surface, so the overlapping surface of the box and the bottom of the water heater body case overlap over a wide range. However, since the internal piping is centrally arranged, no burden is placed on the water heater at the connection points between the centrally connected internal piping and joint pipes.

(Example) Next, an example in which the present invention is applied to a wall-mounted water heater will be described based on the drawings.

In FIGS. 1 to 4, reference numeral 1 denotes a main body case of a water heater which has an exhaust port 2 at the lower front and a combustion case 3 inside. A heat exchanger 5 heated by the burner 4 is provided, a fan 6 for supplying combustion air to the burner 4 is provided above the heat exchanger 5, and an intermediate 7 for concentrating combustion exhaust gas is formed below the fan 6.

The burner 4 is of a premix combustion type, and a combustion flame is formed downward.

The heat exchanger 5 has an upstream end connected to an internal water supply pipe 8 and a downstream end connected to a hot water supply internal pipe 9.

The fan 6 is provided with a gas nozzle 11 connected to an internal gas supply pipe 10 at its suction port.

Connection end 8 of the three internal pipes 8, 9, 10
a, 9a, and 10a are located inside the main body case 1 due to the fact that the exhaust port 2 is formed longitudinally in the horizontal direction and that control devices such as a combustion control device (not shown) are concentrated in one place. They are centrally arranged in a small space on the side of the combustion casing 3, facing the bottom of the water heater body case 1.

On the other hand, the floor surface 12 is provided with an external piping 13 for water supply, an external piping 14 for hot water supply, and an external piping 15 for gas supply. They are arranged in a dispersed manner for reasons such as making it possible to perform connection work with general tools such as spanners, and making it easier to install anti-freeze members around them.

Reference numeral 19 denotes a piping connection device, which is comprised of a box 26 and a joint pipe 16 for water supply, a joint pipe 17 for hot water supply, and a joint pipe 18 for gas supply housed within the box body 26.

This box body 26 consists of a surface 27 that overlaps with the bottom surface of the water heater main body case 1, a surface 28 that connects to external piping, a front surface 29, and side surfaces 30, 30, and a mounting body 3.
It is a wall-mounted type that can be attached to the wall at 1.

Each joint pipe 16, 17, 18 has a connection end 16n, 17 with each internal pipe 8, 9, 10 of the water heater.
On the n and 18n sides, they are arranged centrally on the overlapping surface 27 of the box body 26, and on the connection ends 16g, 17g, and 18g with each external piping 13, 14, and 15, they are distributed on the connection surface 28 of the box body 26. There is. and box 2
The distance between both outer connecting ends 17g and 18g of the connecting ends 16g, 17g, and 18g of each joint pipe distributed on the connecting surface 28 of the box body 26
At least the overlapping surface 27 of the water heater main body case 1 is provided, and each connection end 8a, 9a, 10a of each internal pipe 8, 9, 10 is sufficiently overlapped with the bottom surface of the water heater main body case 1.
and the connection end 1 of each joint pipe 16, 17, 18
Although the connection points with 6n, 17n, and 18n are concentrated, the concentration of connections relative to the size of the main body case 1 of the water heater prevents instability.

In addition, when installing the water heater, the protrusions 2 provided on both sides of the bottom surface of the main body case 1 of the water heater are inserted into the elongated holes 20, 20 provided on both sides of the overlapping surface 27 of the box 26.
1 and 21, and screw the mounting piece 22 provided on the upper back surface of the water heater main body case 1 to the wall surface 23.

In addition, in the illustrated example, each joint pipe 16, 1
7 and 18 are arranged centrally on the overlapping surface 27 side of the box body 26, and in addition to this, the water heater body case 1
The remote control receptacles 24 for various control devices built in and the power receptacles for the fans 6 and the like are also centrally arranged so as to face the opening 27a formed in the overlapping surface 27.

Connections between each external piping 13, 14, 15 and each joint pipe 16, 17, 18 are made using a general tool such as a spanner during the installation work of each external piping 13, 14, 15 performed first. Internal piping 8,
9, 10 and each joint pipe 16, 17, 18 are connected to each other by connecting them to a conventionally known connection part such as a quick joint provided at the connecting end of both pipes when installing the oil supply system later. .

In the refueling system for which the piping connection work has been completed in this way, the fan 6 is rotated by the various control devices driven by the ignition operation to send a desired amount of air-fuel mixture to the burner 4, and the burner 4 is ignited. Then, the water sent from the external piping 13 for water supply via the joint pipe 16 for water supply and the internal piping 8 for water supply is heated in the heat exchanger 5, and the water sent from the internal piping 9 for hot water supply to the joint pipe 1 for hot water supply is heated.
7. Hot water at a desired temperature is supplied to a predetermined location via the external piping 14 for hot water supply, and the combustion exhaust gas collected in the space 7 of the combustion case 3 is discharged to the outside from the exhaust port 2 of the main body case 1 of the water heater.

(Effects of the Invention) According to the present invention, each joint pipe that connects each internal pipe of a water heater and each corresponding external pipe is housed in a box, and the connecting end with each internal pipe is We created a unit by centrally arranging the pipes on the overlapping surface of the box, and distributing the connection ends with each external pipe on the connection surface of the box, so that each internal pipe and each joint pipe, which cannot be repaired, can be connected to each other. The connections can be easily made using a quick fitting or the like, and the piping connection work with each external piping of the water heater can be carried out as before by concentrating the connection ends of each internal piping in a small space. Furthermore, since the overlapping surface of the box body and the bottom surface of the water heater main body case has at least the distance between the two outer connecting ends of the joint pipes distributed at the connection surface, the overlapping surface of the water heater main body case and the box body Even if the connection ends of each internal piping of the water heater are connected by centralized arrangement, the surfaces overlap over a wide range, and the connection with the piping connection device is stable.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of the water heating device, Fig. 2 is an explanatory diagram showing the state in which the piping connection device of the present invention is connected to the water heating device, and Fig. 3 is an explanatory diagram showing the state in which the piping connection device of the present invention is connected to the water heating device and external piping. FIG. 4 is a perspective view of the appearance of the pipe connection device of the present invention. 1... Water heater body case, 8, 9, 10... Internal piping, 13, 14, 15... External piping, 16,
17, 18... Joint pipe, 19... Piping connection device, 26... Box body, 27... Overlapping surface, 28...
connection surface.

Claims (1)

[Claims] 1 Inside the main body case of the water heater, connect internal piping for water supply and internal piping for hot water that connect to the heat exchanger, and internal piping for gas supply to the gas burner that heats the heat exchanger, so that their connecting ends connect to the hot water supply. A water heater provided facing the bottom of the main body case, and an external piping for water supply, an external piping for hot water supply, and an external piping for gas supply, which are connected to each internal piping of the water heater, respectively. A pipe connection device consisting of a box and a plurality of joint pipes housed in the box, each joint pipe being connected between each of the internal pipes and each external pipe. The connection ends of each internal pipe of the water heater are arranged centrally at the surface of the box where it overlaps with the main body case of the water heater, and the connection ends with the external pipe are located at the surface where the box overlaps with the water heater main body case. A pipe connection device disposed in a distributed manner on a connecting surface, and further characterized in that the overlapping surface has at least a distance between both outer connecting ends of joint pipes distributed on the connecting surface.