JPH029331Y2 - - Google Patents

Description

[Detailed description of the invention] The purpose of the invention is to improve the combustibility of bathtubs.

As shown in Fig. 1, in a conventional bathtub, the bottom plate 2 of the bathtub body A is composed of one piece, and there are ventilation holes 2a.
As a result, combustion air rises to the burner 3. Therefore, there was a serious drawback that the surrounding wind greatly affected the burner 3, causing incomplete combustion such as overflowing of flames during strong winds. In order to solve this problem, the present invention installs the bottom plate in two layers, upper and lower, and arranges the ventilation holes at different positions so that they do not match in the vertical direction, thereby reducing the influence of wind and improving the combustibility of the bathtub. is considered to be good.

An embodiment of the present invention will be described below based on the drawings.

In Figure 3, A is the bathtub body, 2 is the bottom plate, and 3
is a burner, 4 is a heat exchanger, 5 is a melt tank and heat exchanger 4
6 is an operation box, and 7 is a floor. As the bottom plate 2, an upper bottom plate 21 and a lower bottom plate 22 are installed vertically with their outer edges overlapped, and the lower bottom plate 22 has a bulge in the lower part of the burner 3 at approximately the center, and a thin hollow chamber 23 is formed in the bulge. A long and narrow ventilation hole 22a is formed in the swollen portion. An elongated ventilation hole 21a is formed in the upper base plate 21 so that the ventilation hole 22a and the ventilation hole 22a are located at different positions in the front and back direction when seen through in the vertical direction, and do not overlap.

25 is an insertion hole for an adjustment bolt. The combustion air is bent from below through the vents 22a and 21a, ascends, and is supplied to the burner 3, and the wind is attenuated and weakened in the empty chamber 23, causing the combustion Eliminate combustion defects such as flame overflow by reducing pressure fluctuations in the air used.

FIG. 5 shows a different embodiment in which an upper base plate 21 and a lower base plate 22 are mounted apart from each other over the entire plane to form a thin cavity 24. In addition, a large number of round ventilation holes 21b are bored in the upper bottom plate 21 over almost the entire plane, and the lower bottom plate 22 has round ventilation holes 22b in the front, back, left and right directions when viewed in a direction perpendicular to the ventilation holes 21b. A large number of holes are drilled at different positions in different directions so that they do not overlap. In this embodiment, the combustion air for the burner 3 is bent and detoured back and forth, left and right from below, and rises. Therefore, the wind in the left-right and front-rear directions is attenuated in the chamber 24, which has the effect of greatly reducing pressure fluctuations in the combustion air. Furthermore, as is clear from the above two embodiments, the lower part of the burner 3 is reliably surrounded by the upper base plate 21 and the lower base plate 22, so that the radiant heat from the burner 3 to the floor 7 is effectively blocked and overheating of the floor 7 is prevented. To prevent.

As mentioned above, the bottom of the body of the bathtub is constructed with a two-stage bottom plate, and the ventilation holes can be viewed through the vertical direction and positioned at different positions to ensure stable combustion of the burner and prevent incomplete combustion. To provide a very effective bathtub that can prevent heating and temperature rise of the floor surface, can be easily applied to existing bathtubs, and is very effective.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic front view showing the conventional example, Fig. 2 A is a plan view showing the bottom plate, Fig. 2 B is a sectional view taken along line XX, and Fig. 3 is an overall outline showing an embodiment of the present invention. Front view, FIG. 4A is a plan view showing the bottom plate, FIG. 4B is a Y-Y sectional view of the same, FIG. The plan view and FIG. 6B are sectional views taken along the Z-Z line. 2... Bottom plate, 3... Burner, 21... Upper bottom plate,
22... Lower bottom plate, 21a, 21b, 22a, 22
b...Vent, 23, 24...Vacant room.

Claims (1)

[Scope of utility model registration request] The bottom plate is installed in two stages above and below, and a plurality of ventilation holes are bored in the bottom plate of the two stages so as not to coincide with each other in the vertical direction, so that the combustion air is bent and detoured from below the bottom and ascends to the burner. A bath kettle.