JPS6236031Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a water heater, and aims to facilitate attachment and detachment of a heat exchanger to a main body and to prevent corrosion of elements located below the main body.

The general structure for assembling the heat exchanger to the main body case in conventional water heaters is to fix the support plate attached to the heat exchanger to the main body case with screws, but this has poor assembly workability and is difficult to assemble the heat exchanger. It is said that dew easily adheres to the outer parts of the vessel, especially water supply pipes, tanks, and other water passing elements, and this dew flows down from the heat exchanger through the combustion tube and corrodes the combustion tube, valves, and other elements. There was a problem.

The present invention has been developed to improve this problem, and the present invention will be explained below based on the illustrated embodiments. In Figures 1 to 4, 1 is the front, rear,
A main body case having an opening 1a on at least one side surface (in the embodiment, the side surface) into which a plate material 2 is detachably attached, and a gas burner 3, valves 4 for controlling gas supply to the burner 3, A heat exchanger 5 heats the water inside, an inlet header tann 7 is connected between the water supply pipe 6 and the heat exchanger 5, and a tank 7 is connected between the hot water supply pipe 8 and the heat exchanger 5 to adjust the temperature of the hot water. It contains a hot water storage tank 10 which also serves as an outlet side header having a detector 9, a combustion cylinder 11 having a flame-resistant heat insulating material 11b attached to the inside of an aluminum-coated iron plate 11a, a forced air intake/exhaust blower 12, and the like.

The heat exchanger 5 has support plates 13 at both ends thereof.
14 is attached, and the support plates 13 and 14 have downwardly extending portions 13a and 14a that extend downward, and a water flow element provided outward from the attachment points of the support plates 13 and 14 of the heat exchanger 5. Consisting of certain piping 17, 18, horizontally extending portions 13b, 14b extending substantially horizontally outward from the bottom of the tanks 7, 10, and abutting and supporting the tanks 7, 10, the horizontally extending portion 13b,
The outer end of the rail 14b engages with guide rails 15 and 16 that are fixed to the left and right sides of the main case 1 so that the end faces the opening 1a.
5, 16 are configured to be slidable in the longitudinal direction, and dew receiving grooves 13c, 14c are formed at the inner ends of the horizontally extending portions 13b, 14b. and,
The upper end of the combustion tube 11 is integrally fixed to the grooves 13c and 14c.

Therefore, the dew that adheres to the pipes 17, 18 and the tanks 7, 10 (especially tends to adhere to the water supply pipe 6 side) is removed from the horizontally extending portions 13b, 14b or the dew receiving grooves 13c, 1.
The combustion heat of the burner 3 also acts to effectively evaporate naturally and prevent dew from flowing down.
In addition, remove all the dew that has adhered to the tanks 7, 10, etc. to the groove 13.
horizontally extending portions 13b, 14 to guide the
b may be slightly inclined downward toward the grooves 13c and 14c. Further, dew that has not completely evaporated naturally in the grooves 13c and 14c drips from both ends of the grooves 13c and 14c, but the dew that has not completely evaporated naturally in the grooves 13c and 14c drips from both ends of the grooves 13c and 14c.
3c and 14c protrude, so that it will not be transmitted through the combustion tube 11. Furthermore, in order to house the heat exchanger 5 in the main body 1, the side plates 2 must be removed and the support plates 13 and 14 must be removed.
It is only necessary to engage the guide rails 15 and 16 and slide them, and the combustion tube 11 can also be installed at the same time.

As mentioned above, the present invention includes a main body case having an opening on at least one of the front, rear, and side surfaces through which a plate can be attached and removed, and guide rails provided on both left and right sides of the main case so that the end faces the opening. , a heat exchanger having both ends equipped with a pair of support plates that are slidably placed on the guide rail, a combustion tube provided below the heat exchanger, and a combustion tube provided below the tube. The support plate extends substantially horizontally below the water passing element provided outward from the support plate attachment point of the heat exchanger.
It is easy to assemble the heat exchanger to the main body case and has good assembly workability. Further, dew adhering to the outer portion of the heat exchanger can be effectively treated by the support plate, and corrosion of the combustion cylinder etc. can be prevented, which is highly effective.

[Brief explanation of the drawing]

Fig. 1 is an overview perspective view of an embodiment of the present invention, Fig. 2 is a side view showing the side opening state of the embodiment, Fig. 3 is a perspective view of main parts of the embodiment, and Fig. 4 is a perspective view of the embodiment. It is a longitudinal cross-sectional view of the main part. DESCRIPTION OF SYMBOLS 1... Main body case, 1a... Opening, 3... Burner, 5... Heat exchanger, 7, 10... Tank (water passing element), 11... Combustion tube, 13, 14... Support plate, 15 , 16...Guide rail, 17, 18...
Piping (water flow elements).

Claims (1)

[Scope of utility model registration request] A main body case having an opening on at least one of the front, rear and side surfaces through which a plate material can be attached and removed, a pair of guide rails provided on both left and right sides within the main body case so that the ends face the opening, and both end portions. a heat exchanger equipped with a pair of support plates whose ends are slidably placed on the guide rail; a combustion tube provided below the heat exchanger; and a burner provided below the combustion tube. A water heater comprising: an end portion of the support plate extending substantially horizontally outward from below a water passing element provided outwardly from a support plate attachment point of the heat exchanger.