KR102159751B1 - Direct contact and pressureless type water heater - Google Patents

Abstract

The present invention relates to a direct contact type non-pressure hot water boiler, which can supply hot water heated to a user′s desired temperature with high thermal efficiency in a short period of time as cold water flowing from the top to the bottom is heated by direct contact with combustion gas rising from the bottom to the top, greatly improves thermal efficiency as a packing material is filled in an upper tower and a contact time between combustion gas and water is maximized, and at the same time, guarantees safety as internal operating pressure is designed to be the same as atmospheric pressure. The direct contact type non-pressure hot water boiler according to the present invention includes: a lower water tank in which hot water is stored; a lower tower that is connected in vertical communication with the upper part of the lower water tank, has a combustion chamber having an outlet in a lower direction and horizontally disposed so that both sides thereof can protrude to the outside, and has a water jacket through which hot water in the lower water tank is circulated and supplied on the outer surface; a first hot water circulation pipe connecting one side of the lower water tank and the water jacket of the lower tower and provided with a hot water circulation pump; a burner provided on one side of the combustion chamber of the lower tower; an upper tower connected in vertical communication with the upper part of the lower tower; a water spray unit provided inside the upper tower and spraying cold water supplied from the outside and hot water supplied from the water jacket of the lower tower; a second hot water circulation pipe connecting the water jacket of the lower tower and the water spray unit; and a demister tower connected to the upper part of the upper tower and provided with a flue communicating with the atmosphere at the upper end.

Description

Direct contact and pressureless type water heater

The present invention is a direct contact type non-pressure hot water boiler that allows hot water of a user's desired temperature to be supplied with high thermal efficiency in a short time as cold water flowing from the top to the bottom is in direct contact with the combustion gas rising from the bottom to the top and heated. In more detail, as the packing material is filled in the upper tower to maximize the contact time between combustion gas and water, thermal efficiency is greatly improved, and safety can be guaranteed as the internal operating pressure is designed equal to atmospheric pressure. It relates to a direct contact type non-pressure hot water boiler.

In general, a hot water boiler is a device that allows hot water to be forcibly circulated indoors or to a required place when water is heated to a certain temperature by the heat generated by combustion of fuel, or to store and use hot water in a separate hot water tank. Say.

These hot water boilers are roughly classified into a water tube type, a pipe type, and a mixture type of them according to their composition.

Among them, a water tube boiler refers to a boiler having a structure in which a water pipe through which water passes through a combustion chamber is arranged so that combustion gas is discharged through the water pipes. As an example of such a water tube boiler, Korean Patent Registration No. 10-0691257 (Announcement on Feb. 12, 2007) includes a main body cover housing, and is provided inside the main body cover housing, and is configured to form an upper and lower pressure diaphragm to be sealed in a cylindrical shape. , A heating water outlet and a heating water return port are formed on the upper and lower sides, and a sealed water chamber body provided with an air outlet to discharge air remaining inside when the heat medium expands due to high temperature in the center of the upper surface, and the water chamber Cylindrical heating chamber formed inside the body, and formed as a disk on the upper side of the heating chamber to form a plurality of upper diaphragm through holes concentrically on the inner surface of the disk, and a plurality of fixing pieces fixedly coupled to the inside of the water chamber body to the outside. The upper diaphragm is formed as a disc at the lower side of the heating chamber, a plurality of bottom diaphragm through holes are formed concentrically on the inner surface of the disc, and an exhaust gas outlet is formed in the center, and between the upper diaphragm and the bottom diaphragm. A heat shield plate to be installed, and a plurality of water pipes provided to communicate with the water chamber body through a plurality of concentric through holes formed in the upper and bottom diaphragms, and extending from the front of the water chamber body into the heating chamber, and inside the heating chamber An opening portion is formed at an upper portion of one side extending by a heating means coupling portion having a fire blocking plate formed at one end of the opening portion, a heating means coupled to the outer diameter side of the water chamber body of the heating means coupling portion, and a center of the bottom plate of the heating chamber. Disclosed is a water tube boiler for heating and hot water supply, characterized in that it comprises an exhaust pipe bent to be inversely exhausted in communication with an exhaust gas outlet.

In addition, a fire tube boiler refers to a boiler configured such that the fire tube through which combustion gas passes through the water chamber. As an example of such a tube boiler, Korean Patent Registration No. 10-1608243 (Announcement on April 1, 2016) has a main body filled with water with a drain and a water return port at the top, and a combustion chamber of a burner installed in the main body. A return port including a functioning furnace, a plurality of pipes arranged around the outside of the furnace and through which combustion gas passes, and a post-combustion chamber installed at the rear end of the furnace to guide the combustion gas into the pipe is installed at the top. , A water exchange guide pipe installed in the main body to communicate with the water exchange port, and for guiding the cold water returned through the water exchange port to be discharged from the bottom of the main body where the pipe connection is not installed. A furnace-linked hot water boiler installed on the upper part of the is disclosed.

Also, a mixed boiler refers to a boiler in which the structural characteristics of a water tube boiler and a tube boiler are mixed. As an example of such a mixed boiler, in Korean Patent Registration No. 10-1552858 (published on September 14, 2015), a number of water pipes are arranged vertically between the upper and lower headers to form a combustion chamber, a water pipe unit having a hot water outlet, and a water return port. A main body filled with water and a pipe unit disposed in parallel with the water pipe unit having a plurality of pipes through which combustion gas passes through the upper and lower surfaces of the main body, and a burner installed on the top of the water pipe unit And a connection unit constituting a post combustion chamber while communicating the water pipe unit and the lower end of the connection unit with each other, wherein the interior of the connection unit body is divided into a region in which the pipes are arranged and a region in which the water pipes of the connection unit are arranged. , A vertical water pipe/associated combined hot water boiler, characterized in that it has a blocking inner cylinder installed at the top of the main body so that two areas communicate with each other, and the water exchange port is disposed at a lower side of the connection unit body to communicate with the blocking inner cylinder. do.

However, as the conventional hot water boiler as described above is formed in a manner that indirectly transfers heat through a pipe, the thermal efficiency is low, and maintenance is required when scale is accumulated in a number of pipes arranged inside the boiler. As a result, there is a problem that additional heat loss occurs.

1. Korean Patent Registration No. 10-0691257 (Announcement on Feb. 12, 2007) 2. Republic of Korea Patent Registration No. 10-1608243 (2016.04.01. Announcement) 3. Korean Patent Registration No. 10-1552858 (published on September 14, 2015)

Therefore, according to the present invention, as the cold water flowing from the top to the bottom is heated by direct contact with the combustion gas rising from the bottom to the top, hot water of a user's desired temperature can be supplied with high thermal efficiency in a short time, and the packing material is provided in the upper tower. It is to provide a direct contact type non-pressure hot water boiler to ensure safety as the internal operating pressure is designed to be the same as atmospheric pressure as the thermal efficiency is significantly improved as the contact time between combustion gas and water is maximized. The purpose.

In order to achieve the above object, the present invention provides a lower water tank in which hot water is stored, and a combustion chamber connected in vertical communication with an upper portion of the lower water tank and having an outlet in the lower direction therein so that both sides protrude outward. A first lower tower arranged horizontally and having a water jacket through which hot water in the lower water tank is circulated and supplied on the outer surface, and a water jacket connected to one side of the lower water tank and the water jacket of the lower tower, and provided with a hot water circulation pump. A hot water circulation pipe, a burner provided on one side of the combustion chamber of the lower tower, an upper tower connected in vertical communication to the upper part of the lower tower, and cold water provided inside the upper tower and supplied from the outside, and the lower part A water spray unit for spraying hot water supplied from the tower's water jacket, a second hot water circulation pipe connecting the water jacket of the lower tower and the water spray unit, and connected to the upper part of the upper tower and connected to the atmosphere at the upper end. It provides a direct contact type non-pressure hot water boiler including a demister tower provided with a flue.

In the present invention, it is assumed that the lower water tank is provided with a level switch for sensing the level of hot water stored therein, and a temperature sensor for sensing the temperature of the hot water stored therein.

In the present invention, a combustion chamber dome for dissipating heat of the burner is formed on the other side of the combustion chamber of the lower tower, an inner pin is formed in the combustion chamber dome, and a guide pin is formed around the combustion chamber.

In the present invention, it is assumed that the water jacket of the lower tower is provided with a steam vent pipe for providing steam generated therein back to the lower tower, and an injection nozzle for injecting hot water supplied therein to the lower tower again.

In the present invention, it is assumed that the inside of the upper tower is filled with a packing material that increases the contact time between the combustion gas and water.

In the present invention, the water spray unit may include a cold/hot water sprayer that sprays cold water supplied from the outside or hot water supplied from a water jacket of the lower tower.

In the present invention, the cold/hot water sprayer has a structure in which a plurality of injection pipes are radially extended around the outer periphery of the central ring part, and spray holes are spaced apart around the lower surface of the central ring part.

In the present invention, the water spray unit includes a cold water sprayer for spraying cold water supplied from the outside, and a hot water circulation sprayer located below the cold water sprayer and spraying hot water supplied from the water jacket of the lower tower.

In the present invention, the cold water sprayer and the hot water circulation sprayer have a structure in which a plurality of spray pipes are radially extended around the outer circumference of the central ring part, and spray holes are spaced apart around the lower surface of the central ring part.

In the direct contact type non-pressure hot water boiler as described above, the cold water injected from the water spraying unit and flowing from the top to the bottom is directly in contact with the combustion gas of the burner rising from the bottom to the top and heated. There is an advantage that it can be supplied with high thermal efficiency within time.

In addition, in the direct contact type non-pressure hot water boiler as described above, as the packing material is filled in the upper tower connected to the lower tower in which the combustion chamber is arranged, the cold water is sprayed from the water spray unit and flows from the top to the bottom and the burner rises from the bottom to the top. As the contact time of the combustion gas is maximized, the thermal efficiency can be significantly improved.

In addition, in the direct contact type non-pressure hot water boiler as described above, water flowing from the top to the bottom does not flow into the combustion chamber as the combustion chamber with the outlet formed in the lower direction is applied, and the lower water tank is the lower tower, the upper tower and the demister tower. Through the communication with the external atmosphere, the internal pressure of the lower water tank can always be maintained equal to the external atmospheric pressure, thereby enabling high safety operation.

1 is a perspective view of a direct contact type non-pressure hot water boiler according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of a direct contact type non-pressure hot water boiler according to a preferred embodiment of the present invention.
3 is a detailed structural diagram of a combustion chamber in a direct contact non-pressure hot water boiler according to a preferred embodiment of the present invention.
4 is a perspective view of a packing material in a direct contact type non-pressure hot water boiler according to a preferred embodiment of the present invention.
Figure 5 is another cross-sectional view of the direct contact type non-pressure hot water boiler according to an embodiment of the present invention.
6 is a structural diagram of a cold/hot water sprayer, a cold water sprayer, or a hot water circulation sprayer included in the water spraying unit in the direct contact non-pressure hot water boiler according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, this is for explaining in detail enough that a person of ordinary skill in the art can easily carry out the invention, and this does not mean that the technical spirit and scope of the present invention are limited.

1 is a perspective view of a direct contact non-pressure hot water boiler according to a preferred embodiment of the present invention, Figure 2 is a cross-sectional structure diagram of a direct contact non-pressure hot water boiler according to a preferred embodiment of the present invention, and Figure 3 is a combustion chamber Figure 4 is a structural diagram, Figure 4 is a perspective view of a packing material, Figure 5 is another cross-sectional structure diagram of a direct contact type non-pressure hot water boiler according to a preferred embodiment of the present invention, Figure 6 is a cold / hot water sprayer included in the water spray unit, cold water This is the structure diagram of the sprayer or hot water circulation sprayer.

A direct contact type non-pressure hot water boiler according to an embodiment of the present invention includes a lower water tank in which hot water is stored, and a combustion chamber connected in vertical communication with an upper portion of the lower water tank and having an outlet formed in the lower direction. The lower tower is arranged horizontally so that both sides protrude to the outside, and a water jacket for circulating hot water in the lower water tank is formed on the outer surface, and one side of the lower water tank and the water jacket of the lower tower are connected, and hot water circulation A first hot water circulation pipe provided with a pump, a burner provided on one side of the combustion chamber of the lower tower, an upper tower connected in vertical communication to the upper part of the lower tower, and provided inside the upper tower from the outside. A water spray unit for spraying cold water supplied and hot water supplied from the water jacket of the lower tower, a second hot water circulation pipe connecting the water jacket of the lower tower and the water spray unit, and a connection to the upper part of the upper tower And a demister tower with a flue connected to the atmosphere at the top.

Hereinafter, the components of the direct contact type non-pressure hot water boiler 1 according to an embodiment of the present invention and the relationship between the components will be described in detail with reference to FIGS. 1 to 5.

The direct contact type non-pressure hot water boiler 1 according to an embodiment of the present invention is a lower water tank 10, a combustion chamber 21 and a water jacket 22 as shown in FIGS. 1 to 6. The lower tower 20, the first hot water circulation pipe 30, the burner 40, the upper tower 50, the water spray units 60, 60', the second hot water circulation pipe 70, and , Including the Demister Tower (80).

Here, the lower water tank 10 corresponds to a hot water tank in which hot water heated by direct contact with the combustion gas of the burner 40 is stored for the purpose of indoor heating or hot water supply.

The lower water tank 10 is provided with a level switch 11 for sensing the level of hot water stored therein, and a temperature sensor 12 for sensing the temperature of the hot water stored therein. In addition, a hot water supply pipe 13 for supplying hot water in the lower water tank 10 to the outside for heating water or hot water supply may be separately connected to the lower water tank 10, and a hot water supply pump 14 ) And a hot water supply valve 15 may be provided.

The temperature sensor 12 generates a control signal according to the temperature of the hot water in the lower water tank 10 so that the controller (not shown) controls whether the burner 40 is operated or the hot water circulation pump 31 is operated. Opening and closing of the hot water supply valve 15 installed in the hot water supply pipe 13 that supplies hot water in the lower water tank 10 to the outside for indoor heating or hot water supply, and whether or not the hot water supply pump 14 is operated can be controlled.

In addition, a drain pipe (not shown) for draining to the outside for maintenance of the lower water tank 10 is provided.

Also, although not shown, an overflow hole is formed on the upper side of the lower water tank 10. The overflow hole serves to drain to the outside when the water level of hot water in the lower water tank 10 rises above a certain height.

The lower tower 20 is vertically connected to the upper portion of the lower water tank 10 described above. The lower tower 20 is a part that is surrounded by a water jacket 22 and a combustion chamber 21 in which a combustion reaction of the burner 40 occurs, so that a high-temperature combustion gas can be formed.

The combustion chamber 21 is horizontally arranged so that both sides of the lower tower 20 protrude to the outside. The combustion chamber 21 is a partition chamber in which a combustion reaction occurs by a flame generated from a burner 40 provided on one side and a high temperature combustion gas is generated, and is horizontal so as to protrude outward on both sides of the lower tower 20. It is equipped with.

When both sides of the combustion chamber 21 are formed to protrude to the outside of the lower tower 20, the other side of the combustion chamber 21 can be prevented from directly contacting the flame despite the relatively long flame of the burner 40. .

As shown in FIG. 3, a discharge port 21a through which the high-temperature combustion gas generated in the combustion chamber 21 is discharged into the lower tower 20 is formed in the lower portion of the combustion chamber 21. In the combustion chamber 21, as the outlet 21a through which the high-temperature combustion gas is discharged is formed open at the lower portion and the rest of the portion including the upper portion is closed, water flowing from the upper portion to the lower portion does not flow into the combustion chamber 21. As a result, incomplete combustion can be prevented in advance.

The other side of the combustion chamber 21 is not formed as a flat plate, but is formed as a combustion chamber dome 21b so that the high-temperature heat generated from the burner 40 can be evenly distributed without being concentrated in only a part, as shown in FIG. 3. In the combustion chamber dome 21b, an inner fin 21c in the shape of a heat cross is formed in a partition so that the high-temperature heat generated from the burner 40 can be partitioned and dispersed.

In addition, a guide pin 21d for guiding the combustion gas generated in the combustion chamber 21 and discharged to the lower portion through the discharge port 21a to be easily raised upwards is provided around the outer periphery of the combustion chamber 21, especially the upper outer periphery of the center. It protrudes at regular intervals.

In addition, a water jacket 22 is formed on the outer surface of the lower tower 20 with both sides protruding outwardly to maintain cooling at an appropriate temperature so that the combustion chamber 21 is not overheated. The water jacket 22 is configured to circulate and supply hot water in the lower water tank 10 by a first hot water circulation pipe 30 to be described later. Accordingly, as the combustion chamber 21 is always surrounded by the water jacket 22 in the lower tower 20, the combustion chamber 21 can be properly cooled, and hot water in the lower water tank 10 due to the water circulation structure Can be maintained at an appropriate temperature without excessive cooling, and overall thermal efficiency can be improved. In addition, by preventing overheating of the outer surface of the lower tower 20, it is possible to reduce the exposure of the user to burn hazard.

In addition, the water jacket 22 of the lower tower 20 is provided with a steam vent pipe 22a for providing the steam generated therein to the lower tower 20 so that a dead zone not filled with water is generated. In some cases, a spray nozzle 22b for spraying hot water supplied therein to the lower tower 20 may be selectively provided.

By internally circulating the hot water in the water jacket 22 through the injection nozzle 22b, it not only prevents internal overheating due to the high-temperature combustion gas, but also can quickly generate hot water through internal circulation. Can be maintained.

In addition, although not shown, a temperature sensor for measuring the temperature of the internal hot water may be additionally installed in the water jacket 22.

One side of the lower water tank 10 and the water jacket 22 of the lower tower 20 are connected by a first hot water circulation pipe 30. The first hot water circulation pipe 30 corresponds to a pipe that allows hot water in the lower water tank 10 to be forcibly supplied to the water jacket 22 of the lower tower 20, and the hot water in the water jacket 22 A hot water circulation pump 31 is provided to generate a forced supply force of hot water so that it can always flow. The hot water circulation pump 31 can be formed by a known water pump.

A burner 40 is provided at one side of the combustion chamber 21 of the lower tower 20 described above. The burner 40 serves to generate a high-temperature combustion gas for direct heating of cold water by burning fuel to generate a flame in the combustion chamber 21, and is used as a gas burner for a boiler or an oil burner for a boiler. Can be formed.

The configuration of the burner 40 is already known in the art, and a detailed description thereof will be omitted here for the sake of simplification of the specification.

The upper tower 50 is vertically connected to the upper portion of the lower tower 20 described above. The upper tower 50 is a gas-liquid heat exchange that is heated by direct contact with the combustion gas of the burner 40 that is sprayed from the water spray units 60 and 60' and flows from the top to the bottom to be described later and rises from the bottom to the top. It serves to form a reaction space, the lower side is connected in communication with the lower tower 20 and the upper side is connected in communication with the demister tower 80.

In addition, the inside of the upper tower 50 is filled with a packing material 51 that increases the contact time between the combustion gas and water. The packing material 51 is made of a metal material having heat resistance that is not damaged by the heat of a high-temperature combustion gas, but is preferably made of a stainless steel material so as not to be corroded by water. In addition, as shown in Figure 4, the packing material 51 is formed in a cylindrical body, a plurality of through-holes 51a on the surface of the packing material 51 so that the area in direct contact between the hot combustion gas and water can be increased. ) Is preferably formed. In addition, a support net 52 for supporting the packing material 51 is provided at an inner lower side of the upper tower 50.

Water spray units 60 and 60' are provided inside the upper tower 50 described above. The water injection units 60 and 60' are components that inject cold water supplied from the outside to be heated by a high-temperature combustion gas and hot water supplied from the water jacket 22 of the lower tower 20.

Among them, the water spray unit 60 is a cold/hot water sprayer that sprays cold water supplied from the outside or hot water supplied from the water jacket 22 of the lower tower 20 as shown in FIGS. 1 and 2 ( 61) may be included. At this time, the cold/hot water sprayer 61 is connected to the cold water supply pipe 61d supplied from the outside, and is also branched to the second hot water circulation pipe 70 to be described later. The cold water supply pipe 61d is provided with a cold water supply valve 61e.

The cold/hot water sprayer 61 has a central ring part connected to one side of the cold water supply pipe 61d as shown in FIG. 6 so that cold water supplied from the outside can be uniformly sprayed in all directions in the upper tower 50 ( 61a), and a plurality of injection pipes 61b extending radially around the outer circumference of the central ring part 61a, and injection holes 61c spaced apart around the lower surface of the central ring part 61a. desirable.

In addition, as shown in FIG. 5, the water spray unit 60' is located under the cold water sprayer 62 for spraying cold water supplied from the outside, and the water jacket of the lower tower 20. It may include a hot water circulation injector 63 for spraying hot water supplied from 22). As a result, the hot water in the water jacket 22 is internally circulated through the hot water circulation sprayer 63 to prevent internal overheating due to the high-temperature combustion gas, as well as quickly generate hot water through internal circulation and maintain the hot water above a certain temperature. can do. At this time, the cold water sprayer 62 is connected to a cold water supply pipe 61d supplied from the outside, and the hot water circulation sprayer 63 is connected to a second hot water circulation pipe 70 to be described later.

The cold water sprayer 62 has a central ring part 62a connected at one side to the cold water supply pipe 61d as shown in FIG. 6 so that cold water supplied from the outside can be uniformly sprayed in all directions in the upper tower 50 Wow, it is preferable to include a plurality of injection pipes 62b extending radially around the outer circumference of the central ring portion 62a, and injection holes 62c formed spaced apart around the lower surface of the central ring portion 62a. .

In addition, the hot water circulation sprayer 63 is a second hot water circulation pipe as shown in FIG. 6 so that hot water supplied from the second hot water circulation pipe 70 can be uniformly sprayed in all directions in the upper tower 50. A central ring part (63a) connected to one side to 70), a plurality of injection pipes (63b) extending radially around the outer circumference of the central ring part (63a), and a space formed around the lower surface of the central ring part (63a) It is preferable to include the injection hole (63c).

The water jacket 22 of the lower tower 20 and the water spray units 60 and 60' described above are connected by a second hot water circulation pipe 70. The second hot water circulation pipe 70 allows hot water in the water jacket 22 of the lower tower 20 to be provided to the inside of the upper tower 50 through the water spray units 60 and 60'. B. The configuration of the pump may be additionally included.

The demister tower 80 is vertically connected to the top of the above-described upper tower 50. The demister tower 80 is a device that removes moisture in steam through steam on a stack of meshes, and a flue 81 communicating with the atmosphere is provided at the top.

The configuration of the demister tower 80 is already known in the art, and further detailed descriptions will be omitted here for the sake of simplification of the specification.

Hereinafter, the overall operation of the direct contact type non-pressure hot water boiler 1 according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

When a flame is generated from the burner 40, high-temperature combustion gas is generated in the combustion chamber 21. The combustion gas generated in this way is discharged to the bottom through the outlet 21a formed in the lower part of the combustion chamber 21 and then rises to the upper side by riding the outer circumference of the combustion chamber 21 again, and then the lower tower 20 and the upper tower 50 ) To the Demister Tower (80).

At this time, the cold water sprayed into the upper tower 50 by the water spray units 60 and 60' flows down along the surface of the packing material 51 and directly with the high-temperature combustion gas rising along the upper tower 50. While being in contact, it is heated with hot hot water and then dropped into the lower water tank 10 and stored.

The hot water stored in the lower water tank 10 flows into the water jacket 22 that wraps the combustion chamber 21 through the first hot water circulation pipe 30 to cool the combustion chamber 21, and then sprays according to the embodiment. It flows back into the lower tower 20 through the nozzle 22b or is provided to the water spraying units 60 and 60' through the second hot water circulation pipe 70 and is sprayed into the upper tower 50, and the packing material ( As it flows down along the surface of 51), it is directly contacted with the high-temperature combustion gas rising along the upper tower 50 and is reheated and then dropped into the lower water tank 10 and stored.

In the case of the direct contact type non-pressure hot water boiler 1 according to the preferred embodiment of the present invention described above, the cold water sprayed from the water spraying units 60 and 60' and flowing from the top to the bottom rises from the bottom to the top. As the combustion gas of 40 is directly contacted and heated, hot water having a temperature desired by the user can be supplied with high thermal efficiency within a short time.

In addition, in the case of the direct contact type non-pressure hot water boiler 1 according to the preferred embodiment of the present invention described above, as the packing material 51 is filled in the upper tower 50, the water spraying unit 60, 60' As the contact time between the cold water injected and flowing from the top to the bottom and the combustion gas of the burner 40 rising from the bottom to the top is maximized, the thermal efficiency can be significantly improved.

In addition, in the case of the direct contact type non-pressure hot water boiler 1 according to the preferred embodiment of the present invention described above, as the combustion chamber 21 in which the outlet 21a is formed in the lower direction is applied, water flowing from the top is applied to the combustion chamber ( 21) and as the lower water tank 10 communicates with the external atmosphere through the lower tower 20, the upper tower 50, and the demister tower 80, the internal pressure of the lower water tank 10 is always Since it can be maintained the same as the external atmospheric pressure, it can be operated with a high degree of safety.

Although some embodiments have been exemplarily described above, the fact that the present invention can be embodied in various forms without departing from the spirit and scope thereof is obvious to those of ordinary skill in the art. Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and all implementations within the scope of the appended claims and equivalents thereof will be included within the scope of the present invention.

1: Direct contact type non-pressure hot water boiler
10: lower water tank
11: level switch
12: temperature sensor
13: hot water supply pipe
14: hot water supply pump
15: hot water supply valve
20: lower tower
21: combustion chamber
21a: outlet
21b: combustion chamber dome
21c: inner pin
21d: guide pin
22: water jacket
22a: steam vent pipe
22b: injection nozzle
30: 1st hot water circulation pipe
31: hot water circulation pump
40: burner
50: upper tower
51: packing material
51a: through hole
52: support net
60, 60': water spray unit
61: cold/hot water sprayer
62: cold water sprayer
63: hot water circulation sprayer
61a, 62a, 63a: central ring part
61b, 62b, 63b: injection pipe
61c, 62c, 63c: spray hole
61d: cold water supply pipe
61e: cold water supply valve
70: 2nd hot water circulation pipe
80: Demister Tower
81: year

Claims (9)

A lower water tank 10 in which hot water is stored;
The combustion chamber 21, which is connected in vertical communication with the upper portion of the lower water tank 10 and has an outlet 21a in the lower direction, is arranged horizontally so that both sides protrude to the outside, and the lower water tank ( 10) a lower tower 20 having a water jacket 22 through which hot water is circulated and supplied;
A first hot water circulation pipe (30) connecting one side of the lower water tank (10) and the water jacket (22) of the lower tower (20) and provided with a hot water circulation pump (31);
A burner 40 provided on one side of the combustion chamber 21 of the lower tower 20;
An upper tower 50 connected to be vertically connected to an upper portion of the lower tower 20;
A water spray unit (60, 60') provided inside the upper tower (50) and spraying cold water supplied from the outside and hot water supplied from the water jacket (22) of the lower tower (20);
A second hot water circulation pipe (70) connecting the water jacket (22) of the lower tower (20) and the water spraying units (60, 60'); And
It includes a demister tower 80 connected to the upper part of the upper tower 50 and provided with a flue 81 communicating with the atmosphere at the upper end,
A combustion chamber dome 21b for dissipating heat of the burner 40 is formed on the other side of the combustion chamber 21 of the lower tower 20, and a high temperature generated from the burner 40 is formed in the combustion chamber dome 21b. An inner pin (21c) in the form of a crisscross is partitioned so that the heat can be divided and distributed, and is generated in the combustion chamber 21 and discharged to the bottom through the discharge port 21a around the outer circumference of the upper center of the combustion chamber 21. A guide pin (21d) for inducing the combustion gas to rise easily upward is formed,
The water jacket 22 of the lower tower 20 is provided with a steam vent pipe 22a for providing the steam generated therein to the lower tower 20 so that a dead zone not filled with water is generated, and the The water jacket 22 prevents internal overheating due to the high-temperature combustion gas, and can quickly generate hot water through internal circulation, and the hot water supplied inside the lower tower is returned to maintain the generated hot water above a certain temperature. 20) a direct contact type non-pressure hot water boiler, characterized in that the injection nozzle (22b) is provided. The method according to claim 1,
The lower water tank 10 is provided with a level switch 11 for sensing the level of hot water stored therein, and a temperature sensor 12 for sensing the temperature of the hot water stored therein. Non-pressure hot water boiler. delete delete The method according to claim 1,
A direct contact type non-pressure hot water boiler, characterized in that the packing material 51 for increasing the contact time between the combustion gas and water is filled inside the upper tower 50. The method according to claim 1,
The water spray unit 60 comprises a cold/hot water sprayer 61 for spraying cold water supplied from the outside or hot water supplied from the water jacket 22 of the lower tower 20. Contactless pressureless hot water boiler. The method of claim 6,
The cold/hot water sprayer 61 has a plurality of spray pipes 61b extending radially around the outer periphery of the central ring part 61a, and the spray holes 61c spaced around the lower surface of the central ring part 61a. Direct contact type non-pressure hot water boiler, characterized in that it has a structure to be. The method according to claim 1,
The water spray unit 60' is located under the cold water sprayer 62 for spraying cold water supplied from the outside, and is supplied from the water jacket 22 of the lower tower 20. Direct contact type non-pressure hot water boiler, characterized in that it comprises a hot water circulation sprayer (63) for spraying hot water. The method of claim 8,
In the cold water sprayer 62 and the hot water circulation sprayer 63, a plurality of injection pipes 62b and 63b are radially extended around the outer circumference of the central ring part 62a, 63a, and the lower part of the central ring part 62a, 63a Direct contact type non-pressure hot water boiler, characterized in that it has a structure in which the spray holes 62c and 63c are spaced apart from each other around the surface.

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