KR20170000078A

KR20170000078A - Heat Storage Tank For Boiler

Info

Publication number: KR20170000078A
Application number: KR1020150088799A
Authority: KR
Inventors: 임미경
Original assignee: 주식회사 썬빅대성에너텍
Priority date: 2015-06-23
Filing date: 2015-06-23
Publication date: 2017-01-02

Abstract

The present invention relates to a hot water tank for a boiler comprising a make-up water tank, which is not exposed outside to prevent a heat loss caused by the make-up tank, and to make a simple composition to reduce its manufacturing cost. A main body of a heat water tank according to the present invention comprises: a cylindrical center body; a dome-shaped upper covering plate, which is fixed as being weld to an upper portion of the center body; and a dome-shaped lower covering plate, which is fixed as being weld to a lower portion of the center body, wherein at least an internal surface of the upper covering plate is made of a material having a corrosion resistance, an overflow pipe is connected to the upper portion of the hot water tank to extend outside, and a check valve is installed in a path of the overflow pipe, so that water flows only in a direction of flowing outside.

Description

[0001] Heat Storage Tank For Boiler [0002]

The present invention relates to a hot water tank for an industrial or domestic boiler, and more particularly, to a hot water tank for an industrial or domestic boiler, and more particularly, to a hot water tank for an industrial or domestic boiler which can prevent heat loss by the replenishing water tank, , And a hot water tank of a boiler.

Hot water boilers widely used in industrial boilers or households are equipped with hot water (storage) tanks. Depending on what the boiler's heat source is, it can be divided into oil, gas, electricity, firewood, pellets or coal boilers, all of which heat water and use heated water as heating or hot water.

A large hot water tank is used to accumulate thermal energy in high specific heat and draw it out little by little. Such hot water tanks are generally called regenerative hot water tanks.

The conventional regenerative hot water tank has a makeup water tank 240 at a position higher than the boiler hot water tank as shown in FIG. The replenishing water tank 240 also supplies water to the hot water tank 200 in response to a change in the volume of the water in the hot water tank 200 and temporarily stores the water overflowing therefrom. The replenishing water tank 240 is often exposed to the outside air, and in this case, a problem of heat loss through the replenishing water tank arises. That is, a substantial amount of heat is lost by the make-up water tank 240. The heating unit 100 may be installed integrally with the hot water tank 200 as shown in FIG.

Korean Utility Model Registration Application No. 20-1998-0009653 Korean Patent Application No. 10-2000-0017495

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hot water tank for a boiler which can prevent heat loss due to a makeup water tank which is additionally installed in a hot water tank of various boilers. A more specific object of the present invention is to provide a hot water tank of a boiler in which the hot water tank performs its function instead of eliminating the above-mentioned make-up water tank, thereby simplifying the structure and obtaining an economically advantageous effect.

The above object is achieved by a hot water tank of a boiler for storing a heat amount generated by combustion of a heat source and supplying it to a customer,

Wherein the body of the hot water tank comprises:

An intermediate cylinder in the form of a cylinder, a top cover plate in the form of a dome fixed by welding on the top of the intermediate cylinder, and a dome-shaped bottom cover plate welded to the bottom of the intermediate cylinder; At least the inner surface of the upper cover plate is made of a corrosion-resistant material;

And an overflow pipe is connected to the upper part of the hot water tank to extend to the outside.

According to an aspect of the present invention, a check valve may be installed on the pipe of the overflow pipe so that the water flows only in a direction in which water flows out.

According to an aspect of the present invention, the upper cover plate may have a storage capacity of 15 to 100 liters in the form of a hollow container having a rounded bottom.

According to another aspect of the present invention, the check valve may be a plate check valve.

According to another aspect of the present invention, the water level of the stored water is maintained to reach the upper cover plate;

A water level sensor is installed in the center of the upper cover plate so as to stand upright, and the water level sensor can be installed to sense the water level above the boundary between the upper cover plate and the intermediate cylinder.

According to another aspect of the present invention, an inner surface of the upper cover plate may be coated with a surface coating for preventing corrosion.

According to another aspect of the present invention, the upper cover plate may be made of stainless steel or an alloy thereof having a corrosion-preventing function.

According to another aspect of the present invention, the upper cover plate may be ceramic coated on the inner surface for the purpose of preventing corrosion.

According to another aspect of the present invention, the upper end of the upper cover plate extends through the upper portion of the intermediate cylinder and extends to the inner space of the upper lid plate, and the other end of the intermediate cylinder extends from one end to the other end, And extends downward to the outside of the hot water tank main body so as to be in a low position.

According to the present invention, since the hot water tank main body has a clearance space for performing the function of the makeup water tank and its uppermost portion is made of a material having a corrosion-preventive function, it is not necessary to fill the water in the hot water tank. In other words, it is possible to allow the clearance space to accommodate the water for the volume expansion of the water. Accordingly, the conventional replenishing water tank is not required, and various losses such as heat loss due to the installation of the replenishing water tank can be eliminated.

1 is a block diagram of a conventional boiler.
2 is a schematic perspective view of a hot water tank main body of a boiler according to an embodiment of the present invention.
3 is a sectional view of a hot water tank of a boiler according to an embodiment of the present invention.
4 is a schematic exploded perspective view of a hot water tank main body of a boiler according to an embodiment of the present invention.
5 is a cross-sectional view of an upper cover plate according to another embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying FIGS. 2 to 4 at the same time. Figure 5 will be described where it is needed.

The hot water tank of the boiler according to the present invention is a device in which the heating portion stores heat generated by combustion and supplies it to a customer. The heating unit generates heat by burning fuel such as kerosene, gas, coal, and harmony. Of course, the heating unit may be an electric boiler using electricity. Although illustrated in each drawing is a hot water boiler using an electric heater, the scope of rights of the present invention is not limited thereto.

Since the feature of the present invention resides in the hot water tank, the hot water tank main body as a main component of the hot water tank will be described below.

2 shows a hot water tank main body incorporating an electric heater. The body of the hot water tank is in the form of a pressure-resistant container, but this is merely an example. The hot water tank main body is connected to the measuring means for measuring the temperature and the water level of the water stored therein, and the inflow and outflow pipes for heating hot water, the inflow and outflow pipes for the heating medium, and the inflow and outflow pipes for hot water. A plurality of holes (7, 9, 11, 13, 15, 17, 19, 21, 25) are provided in the hot water tank main body for the installation thereof. Since the mounting position and the mounting method of these parts correspond to the prior art, detailed description is omitted. The positions, sizes, and numbers of these holes can be sufficiently modified to limit the scope of the present invention.

The hot water tank main body of the present invention comprises an intermediate cylinder 1 in the form of a cylinder, a top cover plate 3 in the form of a dome fixed by welding on the upper portion of the intermediate cylinder 1, And a lower cover plate 5 in the form of a dome.

According to an aspect of the present invention, at least the inner surface 3a (see Fig. 4) of the upper cover plate 3 is made of a material having corrosion resistance. As a method for imparting corrosion resistance, a surface coating for preventing corrosion, for example, a ceramic coating, may be used for the inner surface 3a of the upper cover plate. The entire upper cover plate 3 may be selected from stainless steel or an alloy thereof having a corrosion preventing function. The entire body of the hot water tank may be made of a corrosion-resistant material, but in this case, the cost is greatly increased, which is not preferable. The upper cover plate 3 may be a hollow container having a rounded bottom and a storage capacity of 15 to 100 liters (liter). The upper cover plate 3 may be configured to have an outwardly projecting portion 3b so as to have an additional capacity as shown in Fig. The storage capacity corresponds to an example and will be determined according to the capacity of the hot water tank main body.

According to the present invention, the capacity of the hot water tank main body is set to be 15 to 100 liters more than the standard capacity (rated capacity) displayed on the outside. That is, according to the present invention, the hot water tank main body has an additional capacity, which corresponds to the storage capacity of the replenishing water tank 240 (see FIG. 1) according to the prior art. As a result, the makeup water tank 240 according to the prior art is absorbed into the hot water tank body. The additional capacity of the hot water tank main body can be provided by making the intermediate cylinder 1 longer or by making the upper cover plate 3 more depressed. The protruding portion 3b may be formed as shown in FIG.

The water level (L, see Fig. 3) of the water inside the hot water tank body according to the present invention is maintained in a portion where corrosion does not occur. That is, if only corrosion of the upper cover plate 3 is taken, the water level L of the water should be maintained within the height difference K of the upper cover plate.

The volume of water in the hot water tank body changes with cooling and heating. The water may be heated to 90 ° C by heating. In this case, the volume of the water inside the hot water tank body will be increased as well as the pressure will be increased. The excess water and internal pressure should be discharged to the outside. To this end, an overflow pipe 29 is connected to the upper part of the hot water tank and extends to the outside. According to the drawings, an overflow pipe 29 is provided at the upper end of the intermediate cylinder 1. A check valve 31 may be further provided on the pipe of the overflow pipe 29 so that the water flows only in a direction in which the water flows out. The check valve 31 may be a plate check valve.

According to an aspect of the present invention, the overflow tube 29 extends through the upper portion of the intermediate cylinder 1, one end 29a extends to the upper space formed by the upper cover plate 3, 29a so as to be able to flow out naturally to the outside, that is, lower than the one end 29a.

On the other hand, the water level sensor 27 is fitted in the center of the upper cover plate 3 and installed upright. The water level sensor 27 can be installed so as to sense the water level within the range exceeding the boundary B between the upper cover plate 3 and the intermediate cylinder 1. [

As mentioned above, the water level L of the stored water is maintained so as to reach the upper cover plate 3. When the water level sensor 27 determines a low water level, the electromagnetic valve 35 is operated until the water level maintains a proper level, and the water is supplied from the water source 33 or the like.

According to the present invention, since the hot water tank main body has an additional capacity, it functions as a replenishing water tank by itself. The drain water discharged from the overflow pipe (29) can be used to return to the inside of the hot water tank body or to preheat the hot water inlet pipe because it has heat.

Reference numeral 37 denotes an electrothermal heater for heating the water, reference numeral 39 denotes a hot water supply and reception pipe, and reference numeral 41 denotes a control panel.

The configuration shown and described above is merely a preferred embodiment based on the technical idea of the present invention. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

1: intermediate cylinder 3: upper cover plate
3b: projected portion 5: lower cover plate
27: water level sensor 29: overflow pipe
31: Check valve 35: Solenoid valve
100: heating section 200: hot water tank
240: Replenishment water tank

Claims

A hot water tank of a boiler for storing heat generated by a heating unit and supplying the heat to a customer;
Wherein the body of the hot water tank comprises:
An intermediate cylinder in the form of a cylinder, a top cover plate in the form of a dome fixed by welding on the top of the intermediate cylinder, and a dome-shaped bottom cover plate welded to the bottom of the intermediate cylinder; At least the inner surface of the upper cover plate is made of a corrosion-resistant material;
An overflow pipe is connected to the upper part of the hot water tank and extends to the outside; Wherein a check valve is provided on the pipe of the overflow pipe so that the water flows only in a direction in which the water flows out to the outside.

The method according to claim 1,
The water level of the water in the hot water tank main body is maintained to reach the upper cover plate;
Wherein a water level sensor is installed in the center of the upper cover plate so as to stand upright, and the water level sensor is installed to sense the water level above the boundary between the upper cover plate and the intermediate cylinder.

The method according to claim 1,
Wherein the upper cover plate is ceramic coated on the inner surface for corrosion prevention function.

The apparatus of claim 1, wherein the overflow pipe comprises:
And the other end thereof is positioned lower than the one end so that the water introduced into the one end can flow out naturally to the outside, Wherein the hot water tank extends downward to the outside.