JPS6345636Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hot water storage type heat exchanger device for hot water.

[Prior art] Conventionally, this type of device has a heat exchanger main body, which is made up of an upper endothermic pipe and a lower endothermic pipe arranged side by side in two stages above the burner, and is connected to a hot water storage tank on the outflow side. It is known that the formula is

[Problems to be solved by the invention] The upper endothermic pipe and the lower endothermic pipe of the hot water storage heat exchanger device have different hot air temperatures applied by the burner, for example, 800°C below the lower endothermic pipe and 800°C above. The temperature is 90℃ at the top of the heat absorption tube and 200℃ at the middle part.
If both heat absorption pipes are made to have the same diameter, the temperature of the hot water introduced through the pipes will be greatly different from each other, and the temperature of the hot water obtained through the hot water storage tank will tend to be extremely unstable, which is a disadvantage.

[Means for solving the problem] A heat exchanger main body 4 is provided above the burner 1, which is made up of an upper endothermic pipe 2 and a lower endothermic pipe 3 that are branched and arranged in two stages, upper and lower, through a collecting pipe 6. This was communicated with a hot water storage tank 5 on its outflow side, and the upper endothermic pipe 2 was made smaller in diameter than the lower endothermic pipe 3 and communicated with the hot water storage tank.

[Function] Water led through the water supply pipe 7 is divided into the upper endothermic pipe 2 and the lower endothermic pipe 3 through the collecting pipe 6, heated in each endothermic pipe 2 and 3, and turned into hot water, which is then stored in the hot water storage tank. The upper heat absorption pipe 2 is made relatively small in diameter to reduce the flow rate, and the ratio of "flow rate x amount of heat absorbed" is kept approximately the same. The outlet temperature obtained through each heat absorption pipe 2, 3 is relatively stable.

[Example] For example, the upper heat absorption pipe 2 and the lower heat absorption pipe 3 are
As clearly shown in the figure, there are a plurality of pipes in the horizontal direction, and as shown in FIG. He is trying to communicate with the hot water storage tank 5.

The upper heat absorption pipe 2 is made to have a relatively small diameter, so that the flow rate is reduced and the hot water temperature is increased accordingly. In the drawing, numeral 10 indicates a hot water outlet pipe in the upper part of the hot water storage tank 5.

According to the inventor's experiments, burner 1
When the input is about 28000Kcal/h, the temperature distribution will be 800°C in part A, 200°C in part B, and 90°C in part C. “Flow rate × of heat absorption pipes 2 and 3
The ratio of "absorbed heat amount" was almost the same, and good results were obtained.

[Effect] Hot water of approximately the same temperature is obtained from the upper endothermic pipe 2 and the lower endothermic pipe 3 and is made uniform in the hot water storage tank 5, thereby increasing the unique effect of the hot water storage type heat exchanger, which can stabilize the hot water temperature. What's more, there is no abnormal sound from steam blowing out, which is likely to occur when hot water is tapped at high temperatures. Further, the structure is simple, as it is sufficient to make the upper heat absorption tube 2 relatively small in diameter.

[Brief explanation of the drawing]

FIG. 1 is a cutaway front view of an example of the present device, and FIG. 2 is a cutaway side view thereof. 1... Burner, 2... Upper heat absorption pipe, 3... Lower heat absorption pipe, 4... Heat exchanger body, 5... Hot water storage tank.

Claims (1)

[Scope of utility model registration request] Above the burner 1, there is provided a heat exchanger main body 4, which is made up of an upper endothermic pipe 2 and a lower endothermic pipe 3 branched and arranged in parallel in two stages, upper and lower, via a collecting pipe 6. In the type that communicates with
A heat exchange device characterized in that the upper endothermic tube 2 has a smaller diameter than the lower endothermic tube 3, and the ratio of "flow rate x heat absorption amount" in the upper endothermic tube 2 and the lower endothermic tube 3 is made approximately the same.