JPS622450Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a gas water heater, and its purpose is to provide a structure that can cool and maintain parts that need to be kept at low temperatures, such as control electronic parts. Our goal is to provide gas water heaters with

An embodiment of the present invention will be described with reference to FIG. 1
is the main body of the gas water heater, 2 is the combustion tube, 3 is the exhaust port,
4 is a gas burner, 5 is a gas flow rate regulator, and 6 is a gas pipe. Reference numeral 7 denotes a control device consisting of electronic components that require cooling, and is housed in a cavity 9 formed by a partition wall 8 inside the main body 1 . 10 is a water supply pipe, which snakes in a zigzag shape on the surface of the partition wall 8, and then
It is wound around the combustion tube 2 and connected to the heat exchanger 11. 12 is a hot water supply pipe. FIG. 2 shows another embodiment of the present invention, in which a water supply pipe 10 is wound in a coil around a cylindrical projecting chamber 13 provided in a partition wall 8.

As described above, in the gas water heater of the present invention, a cavity is formed inside the main body that houses the combustion tube, the heat exchanger, and the gas burner by the partition wall, and the temperature is maintained at a low temperature inside the cavity. A water supply pipe that accommodates a control device including electronic components that require this, and supplies cold water to the heat exchanger, snakes around the surface of the partition wall in a zigzag pattern, and then winds around the combustion tube to Since it is connected to a heat exchanger, it has the following effects.

(1) Since the cold water in the water supply pipe 10 is preheated, thermal efficiency can be improved. (2) Since the water supply pipe 10 covers the surface of the partition wall 8 and meanders, the combustion tube 2 in the empty chamber 9
radiant heat is blocked. (3) The control device 7, which is sensitive to heat, such as electronic components, can be protected from the radiant heat of the combustion tube 2, making the use of the gas water heater safe and reliable.
This is particularly effective in cases where ventilation holes cannot be provided to prevent rainwater from entering, such as in gas water heaters used outdoors, since cooling can be achieved without using a cooling fan.

[Brief explanation of the drawing]

Fig. 1: A longitudinal cross-sectional view of an embodiment of the gas water heater of the present invention, Fig. 2: A longitudinal cross-sectional view of main parts of another embodiment of the present invention. 1... Main body, 2... Combustion tube, 3... Exhaust port, 4
...Gas burner, 5...Gas flow regulator, 6...
Gas pipe, 7... Control device, 8... Partition wall, 9... Vacant room, 10... Water supply pipe, 11... Heat exchanger, 12...
...Hot water pipe, 13...Protrusion chamber.

Claims (1)

[Scope of utility model registration request] A cavity is formed by a partition wall inside the main body that houses the combustion tube, the heat exchanger, and the gas burner, and a control device including electronic components that need to be kept at a low temperature is housed inside the cavity. , the water supply pipe supplying cold water to the heat exchanger meandering along the surface of the partition wall in a zigzag pattern, and then winding around the combustion tube and connecting to the heat exchanger; vessel.