JPH0334604Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a heat exchange device that improves heat exchange and prevents boiling and bumping phenomena.

(Prior Art and Problems) For example, in a heat exchange device such as a water heater shown in FIG. 1A, a water pipe receives heat from a fin and heats the water within the water pipe. At this time, the water flowing outside the water pipe causes bumping or boiling phenomena due to local heating, which generates noise. For this reason, conventionally, turbulence forming bodies as shown in FIGS. 1B, C, and D have been installed in the water pipes. However, in cases B and C, the water simply rotates and flows in a spiral,
A laminar inner flow that does not mix with the outer flow is still formed, resulting in bumping and boiling phenomena. In case D, a small eddy flow is formed on the outer side of the water, but in this case as well, a flow is formed on the inner side of the water, and the boiling phenomenon and bumping phenomenon are not eliminated. Furthermore, although B was charged into D and C was charged into D, boiling phenomena, bumping phenomena, etc. could not be prevented. This is due to the formation of a laminar inner flow that does not mix with the outer flow. The present invention solves the conventional problems at once by preventing the formation of an internal flow of water.

(Structure and operation for solving the problem) In FIGS. 2, 3, and 4, reference numeral 1 is a band-shaped member, and 2 is formed inside the band-shaped member 1 and on both sides thereof. It is Shitajiyama Feather.
A coiled member 3 is provided around the outer periphery of the band-shaped member 1, and the band-shaped member 1 with the coiled member 3 is inserted into the midstream portion 5 of the water pipe 4, and the band-shaped member 1 The piston blade 2 is positioned and supported at the center of the water pipe 4 in the midstream part 5. In addition, only the coiled member 3' is inserted into the upstream section 6 of the water tube, and furthermore, the downstream section 7 of the water tube 4 is constructed of only the water tube 4.

In this configuration, first, when water reaches the upstream section 7 of the water pipe 4, the upstream section 7 is provided with a coiled member 3'.
is charged, numerous small eddy currents are formed near the inner wall 8 of the water pipe, and these small eddy currents improve the mixing state near the inner wall 8, preventing local heating and preventing boiling and bumping phenomena. does not occur. The flow of water reaches the midstream section 5 of the water pipe 4 with its outside heated.
Since the rainbow feather 2 is located in the center of the
The inner flow flowing through the center of the water pipe 4 is directed toward the inner wall 8 by the sill blades 2, and is heated by mixing well with the heated outer flow. At this time, since a small vortex is formed near the tube wall 8 by the coiled member 3, this small vortex further promotes the mixing of the inner flow and the outer flow. Therefore, heat exchange is carried out effectively, and at the same time, local heating can be prevented even in the midstream section 5, and boiling and bumping phenomena do not occur. Next, the heated water reaches the downstream section 7 of the water pipe 4;
In this case, since the temperature of the combustion gas is low and the amount of heat absorbed is small, the boiling phenomenon and the bump boiling phenomenon do not occur even if no special measures are provided to the water pipe 4.

(Effects of the invention) As described above, the present invention has a special configuration for the water pipes of the heat exchange device, which can prevent boiling and bumping phenomena, and furthermore, since no local heating area is formed, the temperature of the water pipes can be reduced. This can be achieved, improving the durability of the water pipes and further increasing the water flow rate.
This has the effect of significantly improving thermal efficiency.

[Brief explanation of the drawing]

FIGS. 1A, B, C, and D are explanatory diagrams of conventional devices;
Figures 2A and B are enlarged explanatory views of the main parts of each member; Figures 3A, B, and C are enlarged explanatory views of the main parts of each part; Fig. 2D is a cross-sectional view of the same B excluding the fins; Fig. 4 A and B are illustrative embodiment diagrams. Code, 1... Band-shaped member, 2... Jiyama feather,
3, 3'... Coiled member, 4... Water pipe, 5...
Midstream section, 6... Upstream section, 7... Downstream section, 8... Pipe inner wall.

Claims (1)

[Scope of utility model registration request] A large number of coiled blades are formed on the inside of the band-shaped member and on both sides thereof, a coil-shaped member is provided around the outer periphery of the band-shaped member, and the band-shaped member with the coiled member is installed in the midstream portion of the water pipe. The belt-shaped member positions and supports the sill blade at the center of the water pipe in the midstream part, and only the coil-shaped member is inserted into the upstream part of the water pipe, and the downstream part of the water pipe The heat exchanger section consists of only water pipes.