KR790001557Y1 - Expansion for hot water heating - Google Patents

Abstract

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Description

Hermetic expansion tank for low temperature water heating

1 is an exploded perspective view of the present invention

Figure 2 is a longitudinal sectional view of the present invention illustrating a state in which the bag is stretched or expanded by the expansion tank internal pressure.

3 is a relative diagram of the present invention laid on the hot water heating pipe

The present invention is to supply water to the boiler, in the expansion of the hot water expansion tank of the boiler to control the water level of the circulating hot water by placing a expansion bag in a portion of the tank to maintain the internal pressure always at atmospheric pressure It relates to an airtight expansion and expansion tank for water heating.

Conventional expansion tanks are open and exposed to the surface of hot water, which is severely reduced by natural evaporation of hot water, which increases the amount of cold water supplied. Because of the need to design for the expansion pressure even hard, there were many uneconomical defects that caused the production cost to be increased due to the large tank or the use of hard materials.

The present invention has been made in order to solve the conventional drawbacks and the structure will be described in detail by the accompanying drawings as follows. The tank sealing lid (3) is formed in a "U" shape, and many vent holes (4) are drilled in the curved surface of the lower surface, and a flexible bag (5) made of rubber and plastic in the eastern part of the lid (3) is a band (6). The packing 2a was placed in the opening 2 of the known expansion tank 1, and the flange 3a was closely attached to each other and tightly formed by the bolt 9.

In the drawings, reference numeral 7 denotes a water supply pipe, 7a a water supply valve, 8 a cold water supply pipe, 10 a drain pipe, 10a a drain valve, and 11 a hot water circulation pipe.

The present invention configured as described above connects the cold water supply pipe (8) to the hot water circulation pipe 11, which is the hot water heating pipe system, and opens the water supply valve 7a while opening the drain valve 10a of the drain pipe 10 to expand the water supply flowing through the water supply pipe 7. The tank (1) and the cold water supply pipe 8 is passed through the hot water heating and plumbing system and the boiler. At this time, according to the water level in the expansion tank (1), the bag (5) is floating on the water surface, part of the air inside the bag (5) When the bag 5 is retracted and the water level rises to a height of 10, the water supply valve 7a and the drain valve 10a are closed to close the expansion tank 1 and the direct contact with the tank inner surface is blocked. character.

In this state, when the water level in the expansion tank increases, the internal pressure of the bag 5 is discharged to the vent hole 4 due to the increase in the internal pressure of the bag, and the bag 5 is contracted as shown in FIG. When the internal pressure of the expansion tank 1 decreases as the height decreases, the inlet bag 5 is expanded to the air bag 4 through the air bag 4 so that the internal pressure of the tank is always kept equal to atmospheric pressure. Therefore, the present invention does not regulate the heating hot water expansion by expansion and expansion of the air by expansion pressure by sealing the air in the expansion tank itself like the conventional quantitative hot water heating sealed tank, so that the heating hot water supply is controlled while the internal pressure of the expansion tank is equal to atmospheric pressure. Its structure does not require the pressure resistance to support the expansion pressure as in the conventional hermetic expansion tank, and has the advantage of avoiding the enlargement of the expansion tank considering the air expansion pressure in the tank, so the closed tank for low temperature water using an open expansion tank. Ideal to prevent heat loss caused by spontaneous evaporation in open expansion tank, and to avoid the hassle of dissipating heating and hot water loss due to spontaneous evaporation.

Claims (1)

As shown in the figure, the lid 3 in close contact with the opening of the tank 1 is formed in a “U” shape, so that a plurality of vent holes 4 are formed on the curved surface of the lower surface, and rubber and plastics are formed on the eastern side of the lid 3. An airtight expansion tank for low temperature water heating, bound by a bag (5) le band (6).