JPS6114718Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of the overflow portion of various heat retention tanks (including so-called hot water storage tanks and heat exchange tanks).

Generally, these tanks have a certain overflow surface to prevent the water in the tank from flowing back into the water supply pipe and to prevent the tank body from being damaged by water supply pressure in the event of a problem with the water supply rate control device, etc. An overflow pipe is provided for configurable settings. However, the conventional overflow structure simply provides an overflow pipe that opens to the overflow surface and the outside of the tank, so the space above the inside of the tank and the outside of the tank are communicated via this overflow pipe. There was a problem with heat management in that the temperature of hot water decreased.

This idea was made with the intention of solving the above problem, and by forming a water-tight chamber between the overflow surface and the discharge part, the air between the upper space inside the tank and the outside of the tank was created. The purpose of the present invention is to provide an overflow structure for a heat-retaining tank, which is characterized in that it prevents heat loss of hot water in the tank by blocking the flow of water.

Examples of this invention will be described below based on the drawings.

1 and 2 show a first embodiment of this invention. In the figures, 1 is a heat-retaining tank for storing heated liquid, and 2 is a water-sealing chamber 2c formed in the upper part of the heat-retaining tank 1. This trap 2 is formed into a box shape, and is equipped with an overflow weir 3 that sets an overflow surface on one side, that is, on the upper part of the inner side of the heat-retaining tank 1, and approximately in the middle thereof. A partition wall 4 is formed to partition the upper part of the water-sealing chamber 2c into two chambers 2a and 2b along the inside and outside directions of the tank 1. 5 is an overflow nozzle,
It is provided so as to protrude from the outer chamber 2b of the water sealing chamber 2c divided by the partition wall 4 toward the outside of the tank, and
The opening 5a for discharging the heated liquid in the tank is directed downward. In this case, it is necessary that the lowest point A of the top of the overflow nozzle 5 be located at the same level as or below the overflow surface B.

Figures 3 and 4 show a second embodiment of this invention, in which the trap 2' sealing chamber 2c', overflow weir 3, and overflow nozzle 5 are integrally formed, that is, continuously, using a vent pipe. In this case, the same parts as in the first embodiment are given the same reference numerals and dots, and their explanation will be omitted.

According to the overflow structure of this invention configured as described above, the water sealing chamber 2c or 2c' is formed between the overflow surface and the discharge part, that is, the overflow nozzle 5 or 5', and the water sealing chamber 2c or The upper part of the tank 2c' is partitioned by a partition wall 4 or 4', and the water sealing chamber 2c or 2c' is actively formed in a roundabout shape, so that the water is supplied to the tank 1 or 1' through the overflow nozzle 5 or 5'. There is no fear that the temperature of the hot water in the tank 1 or 1' will drop due to direct communication between the inner upper space and the outside of the tank, and the inside and outside of the tank can be sealed in the water sealing chamber 2c or 2c'. In addition, even if the diameter of the overflow pipe is increased, there will be no problem in terms of heat retention, so if the internal pressure of the tank 1 or 1' increases, the water stored in the water sealing chamber 2c or 2c' can be pushed away and the water can be easily removed to the outside. It also functions as a safety valve for tank 1 or 1'.

The water-sealing chamber 2c or 2c' has a sealing function by its structure itself, but if it is to have a further heat-insulating effect, it may be made of a heat-insulating material such as vinyl chloride, which will provide a better sealing effect. It is effective.

The overflow structure of this invention constructed as described above can be used in all types of heat retention tanks, hot water storage tanks, heat exchange tanks, etc. For example, it can also be used in a hot water storage tank using solar heat as shown in Figure 5. Can be done. That is, it is installed in the same manner as described above above a hot water storage tank c which is connected to a solar collector b through a circulation pipe a having a pump P and is used for use. In addition, d is a water supply pipe, e is a hot water supply pipe,
f is a drain. Although FIG. 5 shows the case where the overflow structure shown in the second embodiment is used, of course the same effect can be obtained even if the overflow structure of the first embodiment is used.

As explained above, according to the overflow structure of this invention, a water sealing chamber having a sealing and safety valve function is provided between the overflow surface of the heat retention tank containing water to be heated and the discharge part. , it is possible to prevent heat loss in the tank by blocking outside air that enters inside the tank via the drainage part with a water seal chamber, and also to release excessive pressure rise inside the tank. Because it can be done, it is also excellent in terms of safety.
In addition, since the diameter of the overflow nozzle can be set arbitrarily, it has excellent effects such as the ability to freely set the overflow discharge capacity.
Its utility value is remarkable.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a first embodiment of the overflow structure of this invention, Fig. 2 is a sectional view taken along the line - in Fig. 1, and Fig. 3 shows a second embodiment of the overflow structure of this invention. FIG. 4 is a perspective view, and FIG. 4 is a sectional view taken along the line - in FIG. 3, and FIG. 5 is a system diagram showing an example of a usage pattern of the tank having the overflow structure of this invention. In the figure, 1, 1'... Tank, 2, 2'... Trap, 2c, 2c'... Sealing chamber, 3, 3'... Overflow weir, 4, 4'... Partition wall, 5, 5 '...is an overflow nozzle.

Claims (1)

[Claims for Utility Model Registration] 1. A trap is constructed by having an overflow weir for setting an overflow surface in the upper part of a tank containing liquid, and a water sealing chamber in the middle part, and from this trap outside the tank. An overflow structure for a heat-retaining tank, comprising: an overflow nozzle protruding toward the tank for discharging liquid in the tank; and at this time, the lowest point of the top of the overflow nozzle is positioned at the same level as or below the overflow surface. 2. The overflow structure of a heat-retaining tank according to claim 1, wherein the trap is formed into a box shape. 3. The overflow structure for a heat-retaining tank according to claim 1, wherein the overflow weir, water seal chamber, and overflow nozzle are formed by a continuous vent pipe. 4. The overflow structure of a heat-insulating tank according to claim 1, wherein the water-sealing chamber is formed of a heat-insulating material.