KR20160131376A - Hot water boiler without power using vapor pressure - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water boiler, and more particularly, to a non-powered hot water boiler capable of circulating warm water without a pump by using a pressure of steam generated from water heated by an electric heater. The non-powered hot water boiler using the vapor pressure according to the present invention comprises an outer casing; The cold water supply pipe is provided on the upper side and the hot water discharge pipe is provided on the lower side. The hot water discharge pipe A heating chamber in which the heating chamber is formed; An electric heater installed on the inner side of the heating chamber and horizontally arranged in a cylindrical shape to generate heat in accordance with power supply and to radiate heat in all directions; And an evaporation plate provided inside the heating chamber and disposed under the upper side cold water supply pipe of the electric heater to form steam as heat transferred from the electric heater in contact with cold water supplied from the outside.

Description

[0001] HOT WATER BOILER WITHOUT POWER USING VAPOR PRESSURE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water boiler, and more particularly, to a non-powered hot water boiler capable of circulating warm water without a pump by using a pressure of steam generated from water heated by an electric heater.

Generally, houses, industrial and agricultural buildings are equipped with heating for winter heating. Such heating devices include a boiler, a hot air fan, an electric heater, a fireplace, etc. In particular, a boiler type heating device capable of heating the floor or wall through hot water circulation and warming indoor air through convection And most of the houses in this case are using the boiler hot water circulation type heating system.

The boiler hot water circulation system heating system usually burns the burner by the heat source such as oil or gas, generates the hot water by using the flame of the burned burner, drives the pump, and through the hot water circulation pipe embedded in the bottom of the building And is configured to circulate hot water to perform heating. However, the cost of oil or gas for burning the burner and heating the hot water is very high, the heat efficiency is not good, and the pump is driven in the hot water circulation.

In particular, Korean Patent Registration No. 10-1110551 discloses a heating device for reducing the heating cost in the winter, and in particular, Korean Patent No. 10-1110551 discloses a heating device for generating electricity by using a vapor pressure generated from water heated by an electric heater, A hot water pumping device is presented.

1 shows a configuration of a conventional hot water pumping apparatus according to the patent. FIG. 1 (a) is a perspective view of the hot water pumping device, and FIG. 1 (b) is a sectional view of the hot water pumping device. As shown in the drawing, the conventional hot water pumping device receives cold water through the supply pipe 3 provided with the check valve 4 for preventing the backflow, generates hot water, and discharges hot water generated through the discharge pipe 5 by non- A nonmoving hot water pumping device (1) comprising: an electric heater (40) generating heat by application of power; Wherein the electric heater 40 is accommodated in the interior of the electric heater 40 and the supply pipe 3 is connected to one side of the upper end and the steam generating space 12 having a predetermined size is defined between the inner peripheral surface and the electric heater 40, (10); And a lower cylinder 20 whose upper end is connected to the lower end of the upper cylinder 10 by the connection passage 30 at the lower side of the upper cylinder 10 and the discharge pipe 5 is connected to one end of the lower end The hot water generated in the lower cylinder 20 is automatically discharged by the steam pressure generated in the steam generating space part 12 of the upper cylinder 10 according to the heating operation of the electric heater 40 .

According to this configuration, there is an advantage that the hot water can be circulated by using the steam pressure of the heated water without power. However, since the time for the cold water flowing through the supply pipe 3 to stay around the electric heater 40 is extremely short, The cold water is directly contacted with the surface of the electric heater 40 and is repeatedly supplied, so that the electric heater 40 itself is cooled, and therefore there is a disadvantage that the formation of steam and hot water is not performed well. The hot water is formed by being stored in the lower cylinder 20 and indirectly heated by the electric heater 40. The electric heater 40 is formed by the body of the upper cylinder 10 and the body of the lower cylinder 20 The upper cylinder 10 and the lower cylinder 20 are made of a metal material so that heat conduction from the electric heater 40 can be suppressed. Even if the water is heated by the method, the heat loss in the upper cylinder 10 and the lower cylinder 20 is large and the heat is directly transferred to the outside, so that there is a risk of burning by the user. In addition, the above patent has a problem in that it is not suitable as a heating means in general households, industrial and agricultural buildings requiring a large circulating pressure because the vapor pressure is small and the hot water circulation pipe is long, which is mainly for application to hot water mat.

The present invention has been made to solve the problems of the conventional hot water circulation boiler as described above, and it is an object of the present invention to reduce heating cost by using an electric heater without using oil or gas having a low thermal efficiency and high fuel cost, It is an object of the present invention to provide a hot water boiler that circulates hot water, has a large amount of steam, has a short hot water generation time, and can be used as a large-scale building heating means.

According to an aspect of the present invention, there is provided a non-powered hot water boiler using vapor pressure, comprising: an outer casing; The cold water supply pipe is provided on the upper side and the hot water discharge pipe is provided on the lower side. The hot water discharge pipe A heating chamber in which the heating chamber is formed; An electric heater installed on the inner side of the heating chamber and horizontally arranged in a cylindrical shape to generate heat in accordance with power supply and to radiate heat in all directions; And an evaporation plate provided inside the heating chamber and disposed under the upper side cold water supply pipe of the electric heater to form steam as heat transferred from the electric heater in contact with cold water supplied from the outside.

Here, the upper part of the heating chamber is formed in a rectangular housing shape, and the lower part is formed in a tapered shape so that stored hot water can be discharged at a relatively high pressure downwardly.

Preferably, the evaporation plate is configured to surround the electric heater in an arc shape from above, and is supported by a support piece on the upper circumferential surface of the electric heater, and the support piece is fixedly coupled to the electric heater. In addition, it is preferable that the evaporation plate is formed in the form of a corrugated plate having a plurality of corrugations in the transverse direction.

The booster system further includes a booster for increasing the pressure of hot water discharged from the boiler. The booster booster is composed of a heat-resistant rubber, which is expanded and contracted by injecting and discharging nitrogen therein, A blade for increasing a discharge pressure; A nitrogen tank for supplying and recovering nitrogen to the blade, the nitrogen tank including a nitrogen supply pipe and a nitrogen recovery pipe; And a suction pump installed in the nitrogen recovery pipe; The nitrogen supply pipe and the nitrogen recovery pipe are connected to different ports of the three-way valve, the other port of the three-way valve is connected to the nitrogen outflow pipe connected to the blade, and the hot water discharge pipe is provided with a pressure sensor.

As described above, according to the present invention, by using an electric heater, it is possible to reduce the heating cost by eliminating the use of oil or gas having a low thermal efficiency and high fuel cost and circulate the hot water by using the steam pressure, And the hot water circulation pressure is increased and the hot water generation time is short. In addition, it has an advantage that it can be utilized as a large-scale building heating means with an additional booster pressure stage.

1 is a perspective view and a cross-sectional view of a conventional hot water circulation pumping device,
FIG. 2 is a partially cutaway perspective view of a non-powered hot water boiler according to the present invention,
3 is a perspective view of an electric heater employed in a non-powered hot water boiler according to the present invention,
4 is a system schematic diagram for explaining the overall operation of the non-powered hot water boiler according to the present invention.

Hereinafter, the construction and operation of the non-powered hot water boiler according to the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

4, the non-powered hot water boiler according to the present invention includes an outer casing 10, a heating chamber 20, an electric heater 30, a vaporizer 40, and a booster 50 .

As shown in FIG. 4, the outer casing 10 is formed of a heat insulating material 12 for reducing heat loss, and is formed of a metal or synthetic resin material. And a sound absorbing material 14 for reducing noise. There is no particular limitation on the shape of the outer casing 10, and it is preferable that the outer casing 10 is formed in the shape of a rectangular housing configured to open the door on the front surface.

The heating chamber 20 heats the cold water supplied from the outside to form steam and hot water, and discharges hot water to the outside by the pressure of the formed steam. To this end, a cold water supply pipe 21 is provided on the upper side of the heating chamber 20, and a hot water discharge pipe 24 is formed on the lower side. The heating chamber 20 has an electric heater 30 and an evaporation plate 40 to be described later, and a predetermined accommodation space is formed therein so that hot water can be temporarily stored in the lower side of the heating chamber 20. As shown in FIG. 2, And the upper part is formed in a rectangular housing shape and the lower part is preferably formed in a tapered shape so as to become narrower downward so that stored hot water can be discharged at a relatively high pressure.

The inside of the heating chamber 20 may be configured to have a single space, but a diaphragm may be additionally provided for separating the upper side where the electric heater 30 is installed and the lower side where the hot water is stored It is possible. In this case, it is preferable that a plurality of through holes are formed in the partition plate so that steam and hot water can be moved from the upper side to the lower side of the heating chamber 20.

The electric heater 30 is a conventional heater which generates heat according to power supply, and is disposed horizontally in the upper part of the inside of the heating chamber 20, and is formed in a generally cylindrical shape so as to radiate heat in all directions, It is preferable that the one side terminal portion 32 for connection of the supply line is exposed to the outside of the heating chamber 20. A through hole (not shown) is formed at one side of the heating chamber 20 to insert the body of the electric heater 30 from the outside to the inside of the heating chamber 20 through the through hole, It is preferable that the step is engaged with the through hole as shown in Fig. The stepped terminal portion 32 may be coupled to the through hole in a threaded manner, or may be coupled in a forced fit manner. In addition, a packing 34 is preferably provided between the terminal portion 32 and the through-hole in order to maintain airtightness.

2 and 3, the evaporation plate 40 is a portion which is in contact with cold water supplied from the outside and is supplied with heat from the electric heater 30, It is preferable that it is provided directly below the upper surface 21. This evaporator increases the amount of steam generated by increasing the contact area with the cold water. In the conventional non-powered boiler as shown in FIG. 1, the temperature of the electric heater 30, which is a heat source, So that the heating can not be effectively performed. That is, the evaporation plate 40 is disposed on the upper side of the electric heater 30 and generates steam in the first direct contact with the cold water supplied through the cold water supply pipe 21, So that the cold water is prevented from directly contacting with the body of the electric heater 30, thereby preventing the electric heater 30 from being cooled. As a result, Allow heating.

3, the evaporation plate 40 is supported by a support piece 42 on the upper peripheral surface of the electric heater 30, and the support piece 42 is supported by the electric heater 30 It is preferable to be fixedly coupled by welding or the like. It is preferable that the evaporation plate 40 is formed in a substantially arc shape so as to surround the electric heater 30 from above. However, in order to further increase the contact area with the cold water and increase the residence time of the cold water, Likewise, it is preferable to be formed in the form of a corrugated plate. That is, in the evaporation plate 40, a plurality of troughs 44 are formed in the transverse direction so that the cold water supplied from the upper part flows into the uppermost trough 44 to fill up the trough 44, In this process, a thin water film is formed on the surface of the evaporation plate 40, and the thin water film is more easily evaporated and a large amount of steam can be generated. In addition, since the cold water is temporarily stored in each of the troughs 44, the residence time is prolonged, and the steam generation rate can be increased. The water overflowing from the evaporation plate (40) drops downward and temporarily stored in the lower side of the heating chamber (20).

Since the evaporation plate 40 is for generating cold by heating the cold water, it is necessary to perform a heating operation. The evaporation plate 40 may be configured to be a heat conductor and generate heat by receiving heat generated from the electric heater 30, or may be configured to generate heat through power connection.

Since the evaporation plate 40 is horizontally elongated along the longitudinal direction of the electric heater 30, a large amount of steam can be formed only by supplying cold water uniformly over the evaporation plate 40. 2, on the upper side of the evaporation plate 40 in the heating chamber 20, cold water supplied for distributing the cold water supplied from the cold water supply pipe 21 evenly over the length of the evaporation plate 40, It is preferable that a pipe 22 is additionally provided. A plurality of nozzles 23 for discharging water to the surface of the evaporation plate 40 are disposed on the lower side of the cold water distribution pipe 22 extending horizontally and horizontally along the longitudinal direction on the upper side of the evaporation plate 40 . The cold water distribution pipe 22 may be configured to supply cold water only to the uppermost end of the evaporation plate 40 or to simultaneously spray the entire evaporation plate 40 with different angles of the nozzles 23 .

On the other hand, in the lower portion of the heating chamber 20, the water overflowing from the evaporation plate 40 drops and is temporarily stored. As described above, the temporarily stored water is already heated to some extent in the evaporation plate 40 And is reheated by the electric heater 30 as a relatively low temperature state. That is, the water temporarily stored in the lower part of the heating chamber 20 receives heat radiated from the lower part of the electric heater 30, and is converted into hot water by being heated. 1, the whole of the electric heater 30 is surrounded by cold water, the lower cylinder is relatively far away from the electric heater 30, and the connecting passage is narrow, However, in the case of the boiler according to the present invention, the lower portion of the electric heater 30 does not have contact with cold water (or the contact is minimized), and continuous heating is possible without lowering the temperature However, the distance from the stored water is relatively short, so it is possible to generate hot water at a high temperature. 4, if the lower portion of the electric heater 30 is extended to be submerged in the water temporarily stored in the lower portion of the heating chamber 20, water is directly heated by conduction to generate hot water at a high temperature . At this time, when the diaphragm is installed in the heating chamber 20, it is preferable to form a through hole so that the lower portion of the electric heater 30 can pass through the center of the diaphragm.

The hot water discharge pipe (24) of the heating chamber (20) is provided with an automatic valve (25). The automatic valve 25 is for opening and closing the hot water discharge pipe 24 for discharging the hot water generated in the heating chamber 20 to the outside and can be opened at a predetermined time period or hot water is generated in an amount required for heating It may be opened by measuring and sensing the level of the hot water, or may be configured to measure the vapor pressure inside the heating chamber 20 and to open it when a preset pressure is reached. For this purpose, it is preferable that the heating chamber 20 is provided with a level sensor or a pressure sensor, and the automatic valve 25 is constituted by an electrically operated valve or a solenoid valve which can be automatically opened and closed by sensing the signals of the sensors . It is preferable that the heating chamber 20 is provided with a safety valve that discharges the steam to the outside to prevent the explosion when the internal pressure rises above a predetermined pressure.

In the meantime, the non-powered hot water boiler according to the present invention is configured to discharge hot water only by its own vapor pressure. However, in a large house, a building, a factory, a house or the like, the pipe becomes longer as the heating area becomes wider, In this case, it is desirable that a separate booster tank 50 is added, though power consumption is somewhat required. As shown in Figs. 3 and 4, the booster 50 includes a blade 51, a nitrogen tank 52, and a suction pump 57, as shown in Figs. 3 and 4, for increasing the pressure of the hot water. .

The blade 51 is a kind of bag made of a heat resistant rubber material. The blade 51 expands and contracts by injecting and discharging gas such as nitrogen or oxygen to increase the discharge pressure of the hot water temporarily stored in the lower portion of the heating chamber 20 It plays a role.

The nitrogen tank 52 is for supplying and recovering nitrogen to the blade 51 and includes a nitrogen supply pipe 55 and a nitrogen recovery pipe 56. The nitrogen supply pipe 55 and the nitrogen recovery pipe 56 are connected to different ports of a three-way valve 54 and another port of the three- And a nitrogen outlet pipe connected to the nitrogen outlet pipe is connected. The hot water discharge pipe (24) is provided with a pressure sensor, and the nitrogen recovery pipe (56) is provided with a small suction pump (57).

When nitrogen is filled at a high pressure in the initial nitrogen tank 52 and the hot water discharge pressure is detected as being low by the pressure sensor provided in the hot water discharge pipe 24, the nitrogen supply pipe 55 side The port on the port and the nitrogen inlet / outlet pipe 53 is opened, and the flow path between the nitrogen supply pipe 55 and the nitrogen outlet pipe 53 communicates with each other and nitrogen flows into the blade 51. As a result, the expander 51 pushes the hot water and the hot water discharge pressure rises. The port on the nitrogen supply pipe 55 side of the three-way valve 54 is closed and the port on the nitrogen return pipe 56 is opened so that the flow path between the nitrogen discharge pipe 53 and the nitrogen return pipe 56 is opened, At the same time, the suction pump 57 is activated to return the nitrogen contained in the blade 51 to the nitrogen tank 52 again. By repetition of such operation, the hot water discharge pressure increasing operation is performed at regular intervals.

FIG. 4 shows a schematic overall system diagram of a non-powered hot water boiler as described above. Hereinafter, the operation of the non-powered hot water boiler according to the present invention will be described with reference to FIG.

4, the non-powered hot water boiler according to the present invention is connected to the water tank 60 through a cold water supply pipe 21 connected to the upper side of the heating chamber 20, The hot water discharge pipe 24 connected to the circulation pipe 70 is connected to a circulation pipe 70 installed in a heating load 100 requiring heating such as a house or a commercial building or an agricultural housing and the circulation pipe 70 is again connected to the water tank 60, respectively. Here, a check valve is installed in the cold water supply pipe 21 to prevent reverse flow. The check valve closes when steam is generated in the heating chamber 20, and is opened by the pressure of the supplied water.

First, the cold water supplied through the water tank 60 flows into the heating chamber 20 through the cold water supply pipe 21. As described above, the cold water supply pipe 21 is provided with a cold water distribution pipe 22, and the cold water is evenly distributed over the longitudinal direction of the evaporation plate 40. The cold water distributed from the cold water distribution pipe 22 is in contact with the evaporation plate 40 to generate steam. As described above, a plurality of troughs 44 are formed in the evaporation plate 40 so that cold water passes through each trough 44 to form a water film on the surface of the evaporation plate 40, As time is prolonged, a large amount of steam is produced. The water overflowing from the evaporation plate (40) drops to the lower side of the heating chamber (20) and temporarily stored. The stored water is again heated to a high temperature by the electric heater 30 to form hot water.

In this way, steam is continuously generated on the upper side in the heating chamber 20 and hot water is generated on the lower side. Since the heating chamber 20 is in a hermetically closed state, the pressure inside the heating chamber 20 becomes very high due to the vapor pressure. When the automatic valve 25 provided in the hot water discharge pipe 24 below the heating chamber 20 is opened, the hot water is discharged from the hot water discharge pipe 24 by the gravity of the hot water and the high vapor pressure on the upper side of the heating chamber 20, And circulates through the circulation pipe 70 installed in the heating load 100 to perform heating. At this time, when the discharge pressure of the hot water is equal to the pressure required for circulation, the discharge pressure can be increased by filling the blade 51 with nitrogen from the nitrogen tank 52 and expanding it.

The water circulating in the heating load 100 is cooled and stored in the water tank 60. The stored water flows into the heating chamber 20 through the cold water supply pipe 21 and repeats the cycle described above do.

All operations of the non-powered hot water boiler are controlled by the control unit 200, and include a power source for heating the electric heater 30, an operating power source for various sensors and valves, and a suction pump 57 for auxiliary booster means. The driving power source is used to store the electricity generated through the outdoor small wind power generator 400 and the solar generator 500 in the ESS 300 (Energy Storage System) It can contribute to prevention of environmental pollution by reducing consumption amount.

10: outer casing 12: insulation
14: Sound absorbing material 20: Heating chamber
21: cold water supply pipe 22: cold water distribution pipe
23: nozzle 24: hot water discharge pipe
25: automatic valve 30: electric heater
32: terminal portion 34: packing
40: evaporation plate 42: support piece
44: goal 50:
51: blade 52: nitrogen tank
53: Nitrogen effluent inlet 54: Three-way valve
55: Nitrogen feed pipe 56: Nitrogen feed pipe
57: Suction pump 60: Water tank
70: Circulation piping 100: Heating load
200: control unit 300: ESS
400: Wind generator 500: Solar generator

Claims (5)

An outer casing (10);
The hot water supplied from the outside is heated to form steam and hot water, and the hot water is discharged to the outside by the pressure of the formed steam. A cold water supply pipe (21) is provided on the upper side A heating chamber 20 having a hot water discharge pipe 24 formed on the lower side thereof;
An electric heater 30 installed in the upper part of the inside of the heating chamber 20 and horizontally arranged in a cylindrical shape to generate heat in accordance with power supply and radiate heat in all directions;
And is installed inside the heating chamber 20 and is installed directly below the upper cold water supply pipe 21 of the electric heater 30 and contacts the cold water supplied from the outside, (40) for generating steam. The method according to claim 1,
Wherein the upper part of the heating chamber (20) is formed in a rectangular housing shape, and the lower part is tapered so as to become narrower downward so that stored hot water can be discharged at a comparatively high pressure. The method according to claim 1,
The evaporation plate 40 is configured to surround the electric heater 30 in an arc shape from above and is supported by a support piece 42 on the upper outer peripheral surface of the electric heater 30, And the heater (30) is fixedly coupled to the heater (30). The method of claim 3,
Wherein the evaporation plate (40) is in the form of a corrugated plate in which a plurality of troughs (44) are formed in a transverse direction. The method according to claim 1,
(50) for increasing the pressure of the hot water to be discharged, wherein the booster pressure stage (50)
A blade 51 made of heat-resistant rubber and expanded and contracted by injection and discharge of nitrogen therein to increase the discharge pressure of the hot water temporarily stored in the lower portion of the heating chamber 20;
A nitrogen tank 52 for supplying and recovering nitrogen to the blade 51, the nitrogen tank 52 including a nitrogen supply pipe 55 and a nitrogen recovery pipe 56;
And a suction pump (57) installed in the nitrogen recovery pipe (56);
The nitrogen supply pipe 55 and the nitrogen recovery pipe 56 are connected to different ports of the three-way valve 54 and the other port of the three-way valve 54 is connected to the nitrogen outflow pipe connected to the blade 51 , And the hot water discharge pipe (24) is provided with a pressure sensor.

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