JPH0561537B2 - - 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) The internal piping of a water heater is provided with internal piping for water supply and internal piping for hot water that are connected to a heat exchanger in the main body of the water heater, and internal piping for supplying gas from a gas burner that heats the heat exchanger; It is known to connect corresponding external piping for water supply, external piping for hot water supply, and external piping for gas supply, heat water with a heat exchanger, and supply hot water. In this case, in order to ensure that the water heater does not get in the way of other construction work during the new construction, and to prevent damage to the exterior surface of the water heater, after completing the piping work for each external piping,
It is installed at the stage of use, and in anticipation of future use of the water heater, only the external piping work is done in advance, and when the water heater becomes necessary, the water heater is installed at that stage.

(Problem to be Solved by the Invention) Therefore, conventionally, in any case, piping work for each external pipe and piping work for connecting each internal pipe and each external pipe when installing a water heater are required. The construction work had to be carried out twice by experts separately, which caused the inconvenience of making the construction work troublesome.

(Means for Solving the Problems) The present invention aims to solve the above-mentioned inconvenience by connecting each internal pipe and each external pipe without any construction work when installing a water heater. hand,
A water heater that includes internal piping for water supply, internal piping for hot water supply, and internal piping for supplying gas to a gas burner that heats the heat exchanger, in a main body case of the water heater, and the hot water supply device. A piping connection device interposed between each internal piping of the device and each of the external piping for water supply, external piping for hot water supply, and external piping for gas supply, which are connected to each internal piping of the device, the device comprising: a box;
Consisting of a plurality of joint pipes housed in the box, each joint pipe is connected between each internal pipe and each external pipe, and each joint pipe is connected to each internal pipe of the water heater. The ends are arranged coaxially, and the connecting ends with the respective external pipes are arranged in a distributed manner, and a locking part for locking the water heater main body is provided on the box or the mounting bracket for the water heater with the box.

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

At this time, the joint tube stored in the box body is
The connection end with each internal pipe is coaxially arranged and corresponds to each internal pipe of the water heater. Furthermore, the connection ends with each external piping are distributed and correspond to each external piping. The piping connection work between each external piping and each joint pipe can be easily performed using general construction tools such as a wrench when laying each external piping, and the connection between each internal piping and each joint pipe can be easily performed with the water heater. This can be easily done by simply fitting the coaxially arranged connection ends together, and as a result, each internal pipe and each external pipe can be easily connected.

In addition, since the water heater body is locked to the box or the mounting bracket for the water heater with the box at the locking part that locks the water heater body provided on the box or the mounting bracket for the water heater with the box, the box The connections between each joint pipe connection end and each internal piping connection end can be reliably connected without coming loose.

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

1 to 5, there is shown a main body case of a water heater having an exhaust port 2 at the lower part of the front surface and a combustion case 3 inside. A heat exchanger 5 heated by a burner 4 is provided, a fan 6 for supplying combustion air to the burner 4 is provided above the heat exchanger 5, and a space 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 connected to the main body of the water heater 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. It is arranged coaxially in the vertical direction in a small space on the side of the combustion housing 3 inside the case 1. In this case, the arrangement is from inside to outside, with gas, water, and hot water in that order.

Furthermore, four protrusions 12 projecting rearward are provided at appropriate intervals on the back surface of the water heater body case 1, and the tips of the protrusions 12 are formed into enlarged portions for locking.

On the other hand, on the floor surface 13, an external piping 14 for water supply, an external piping 15 for hot water supply, and an external piping 16 for gas supply are laid, and the connecting ends 14a, 15a, 16a of each external piping 14, 15, 16 are connected to the piping. 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 17 indicates a water heater mounting bracket that is fixed to the wall surface 18 with screws or the like during installation of each of the external pipes 14, 15, and 16. There is. The water heater mounting bracket 17 has four elongated holes 19, 19, 19, 19 that are longitudinal in the vertical direction and serve as locking parts for locking the water heater main body case 1 to the water heater mounting bracket.
are provided, and these are provided with the four projections 12, 1
2, 12, and 12, the water heater main body case 1 is attached to the water heater mounting bracket 17. 23 is a pipe connection device, which includes a box body 33 and a water supply joint pipe 2 housed within this box body 33.
0, a joint pipe 21 for hot water supply and a joint pipe 22 for gas supply.

This piping connection device 23 is attached to the hot water supply device mounting bracket 17 and is of a wall-mounting type that can be attached to a wall.

Each joint pipe 20, 21, 22 is arranged coaxially at the end connected to each internal pipe 8, 9, 10, and distributed at the end connected to each external pipe 14, 15, 16. 14, 15, 16 and each joint pipe 20, 21, 22 is made using a general tool such as a wrench during the installation work of each external piping 14, 15, 16 performed first, and each internal piping 8 , 9, 10 and each joint tube 20, 2
1 and 22, when the protrusion 12 of the water heater body case 1 is attached to the elongated hole 19 as a locking part of the water heater mounting bracket 17, which will be done later, both pipes will fit automatically without using any tools. It is done together.

In the figures, 24, 25, and 26 are O-rings for sealing, 27 is a remote control outlet, 28 is a power outlet for the fan 6, etc., and 29 is a drain plug.

In the water heater for which the piping connection work has been completed in this way, the fan 6 rotates and the desired amount of air-fuel mixture is sent to the burner 4 by driving various control devices accompanying the ignition operation, and the burner 4 is ignited. Then, the water sent from the external water supply pipe 14 through the water supply joint pipe 20 and the water supply internal pipe 8 is heated in the heat exchanger 5, and the water is transferred from the hot water supply internal pipe 9 to the hot water supply joint pipe 21, and the hot water supply joint pipe 21. Hot water at a desired temperature is supplied to a predetermined location via external piping 15, and the combustion exhaust gas that collects in the space 7 of the combustion case 3 is transferred to the exhaust port 2 of the water heater body case 1.
released to the outside.

In the above embodiment, the attachment of the water heater main body case 1 to the water heater mounting bracket 17 is performed using the main body case 1.
Although this is done by engaging the protrusion 12 in the elongated hole 19 as a locking part of the mounting bracket 17, the present invention is not limited to this. For example, as shown in FIG.
The protrusions 31, 31 provided on both sides of the lower surface of the main body case 1 are fitted into the slit-shaped holes 30, 30 as locking parts provided on both sides of the upper surface of the box body 23. Mounting piece 32 provided on
This may be done by screwing it to the mounting bracket 17.

In addition, in the above embodiment, three internal pipes 8,
Connecting ends 8a, 9a, 10a of 9, 10 to combustion housing 3
The combustion flame of the burner 4 is formed upward, and the exhaust port 2 is provided at the upper front of the main body case 1, as shown in FIG. In some cases, it may be coaxially arranged within the box body 33 below the water heater main body case 1.

(Effects of the Invention) As described above, according to the present invention, each joint pipe is housed in a box body, coaxially arranged at the end connected to the internal pipe, and distributed in a distributed arrangement at the end connected to the external pipe. Since it has been made into a unit, when laying each external piping to be done first,
Each joint pipe that has been made into a unit can be installed at the planned location, and the work can be done by connecting each external pipe to each joint pipe, so there is no need to perform any construction work when installing the water heater later. Each internal pipe can be connected to each joint pipe by simply fitting the connection terminals of both pipes together, and each external pipe and each internal pipe can be connected by two steps.
This has the effect of simplifying the construction work compared to the conventional method, which requires multiple construction works, and furthermore, since each internal pipe and each joint pipe are coaxially connected, each of these pipes can be spaced apart as appropriate. Compared to other connected devices, there is no misalignment when connecting, so it can be connected reliably without straining, and the locking part provided on the box or the mounting bracket for the water heater with the box allows hot water to be supplied. Since the main body case is locked, there is an effect that the connection by fitting the connection end of each joint pipe with each internal pipe is also reliably performed.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of the water heater, FIG. 2 is a cutaway front view thereof, and FIG. 4 is an external perspective view of the piping connection device of the present invention, FIG. 5 is a cut-away explanatory view of the main part, FIG. 6 is a perspective explanatory view of another embodiment of the present invention, and FIG. 7 is a perspective view of still another embodiment of the present invention. It is an explanatory view showing an example. 8, 9, 10... Internal piping, 8a, 9a, 10
a... Connection end, 14, 15, 16... External piping,
20, 21, 22...Joint pipe, 23...Piping connection device, 33...Box body.

Claims (1)

[Claims] 1. A water heater that includes internal piping for water supply, internal piping for hot water supply, and internal piping for supplying gas to a gas burner that heats the heat exchanger, in a water heater main body case; A piping connection device that is interposed between each internal piping of a water heating device and each external piping for water supply, external piping for hot water supply, and external piping for gas supply, which are connected to each internal piping of a water heating device, and comprising a box and the box. It consists of a plurality of joint pipes housed in the body, each joint pipe is connected between each of the internal pipes and each external pipe, and the connection end with each internal pipe of the water heater is Piping characterized in that it is coaxially arranged, the connection ends with the external piping are arranged in a distributed manner, and a locking part for locking the water heater main body is provided on the box or the mounting bracket for the water heater with the box. Connection device.