MX2010005740A - Water heater for boilers. - Google Patents

Abstract

The present invention provides a water heater, which operation is based on steam and which may be easily exchanged due to the design thereof that comprises: a main body having a wrapping cylindrical- tubular shape which has an inner chamber; the wrapping cylinder has, in the longitudinal wall that is closer to the upper portion thereof, a tube acting as an inlet for the steam resulting from the boiler; and an outlet tube located in close proximity to the lower portion thereof for exhausting the condensed steam, so that the steam resulting from the boiler is flowed through the inner chamber formed by the lateral smooth walls of the wrapping cylinder; the inner chamber of the wrapping cylinder houses a cartridge that comprises a couple of circular plates called mirrors and a plurality of vertically arranged tubes, which upper and lower end portion thereof are welded to the circular plates or mirrors, the diameter of each plate is approximately equal to the inner diameter of the wrapping cylinder, thus forming a space of cartridge.

Description

WATER HEATER FOR BOILERS.

DESCRIPTION FIELD OF THE INVENTION The present invention relates mainly to a water heater that works with water vapor which has the capacity to generate hot water efficiently and quickly taking full advantage of the calories of the steam, this is achieved through the exchange of heat, using a series of longitudinal tubes through which the cold water circulates, said tubes are inside a tubular chamber through which the steam coming from a boiler circulates.

BACKGROUND OF THE INVENTION Boilers or steam generators are industrial facilities that, by applying the heat of a solid, liquid or gaseous fuel, heat and / or vaporize the water for various applications, such as in industry, where it is required to have saturated or superheated steam for the heating of spaces or for specific processes carried out with steam.

Currently there are various types of boilers, such as large-volume water boilers, boilers with kettles, indoor heaters, medium-volume water boilers, locomotive boilers, marine boilers, combined boilers, low volume water boilers , etc., so it is clear that there are numerous designs of each, of which may have their own characteristics, however most of the boilers can be classified into two main groups, the pirotubular and aquatubular boilers, some of whose characteristics are indicated below.

The pirotubular boilers are denominated thus for being the hot gases coming from the combustion of a fuel, those that circulate inside the tubes whose exterior this bathed by the water of the boiler. The fuel is burned in a combustion chamber, where heat transmission by radiation takes place, and the resulting gases are circulated through the tubes that constitute the tubular bundle of the boiler, and where the exchange takes place. of heat by conduction and convection. Depending on the one or more times the gases pass through the tubular bundle, the boilers have one or more steps. In the case of boilers of several steps, in each of them, fumes only pass through a certain number of tubes, which is achieved by means of the so-called smoke chambers. Once the thermal exchange has been carried out, the fumes are expelled to the outside through the chimney.

Water tube boilers operate under the principle of circulating water inside internal longitudinal tubes that form a closed circuit through said boiler that constitutes the heat exchange surface of the same. Additionally, they can be equipped with other elements of heat exchange, such as the superheater, reheater, economizer, etc. These boilers, consist of a combustion chamber configured by water pipes, tubes and refractory, or only refractory, in which the fuel combustion takes place and constituting the radiation area of the boiler. From said combustion chamber, the hot gases resulting from combustion are conducted through the boiler circuit, which is formed by panels of tubes and constitutes the convection zone of the boiler, so that finally, the gases are sent to the atmosphere through the chimney.

OBJECTIVES OF THE INVENTION.

The present invention is a special attachment to be used with boilers which by their construction or constitution do not have the capacity to provide hot water, but only pure steam, this attachment is called boiler water heater. However, its use is not only restricted to boilers generating only steam, but also to boilers that are capable of supplying hot water, but which offer certain disadvantages since for the maintenance of the internal pipes of most of these boilers, it is necessary the use of chemical products, so that the hot water supplied by this type of boilers is not suitable for human consumption, due to this the use of an independent heater is necessary and is where the present invention gives solution to said problem.

The water heater was designed to heat the water automatically, achieved by means of the materials with which it is manufactured and based on the design with which it was calculated, so that the water heater interacted ideally with the boiler, in this way obtaining the maximum efficiency to heat only the water required by the user, by making this service more efficient, a percentage of fuel is saved in relation to the traditional heaters that exist in the market, as well as the following advantage: -The maximum use of the steam temperature to heat the water, to achieve efficient heat transfer.

-When reducing the heating times of the water, it is reflected in the longer shutdown times of the boilers and consequently less fuel is used, in addition to the emission of atmospheric pollutants.

-Minimum maintenance required since the materials with which the boiler water heater is manufactured, do not allow corrosion and only require quarterly or semi-annual supervision of the interchangeable cartridge to verify its internal cleaning and ensure its efficient operation.

- Its repair is simple due to its practical design and the use of a cartridge which can be exchanged easily and safely.

BRIEF DESCRIPTION OF THE INVENTION This water heater has the ability to provide hot water quickly and efficiently. Said heater has a high efficiency in heat transfer, avoiding the use of other independent devices such as water heaters, thus taking advantage of the steam generated by the boiler and achieving a considerable saving in relation to the fuel consumed by a water heater as well as a decrease in the necessary time that the water heater takes from the beginning until reaching the hot water temperature required to provide the necessary service.

The present invention provides a water heater, which operates on a steam basis and which can be easily interchangeable thanks to its design, it consists of: a tubular main body or enclosing cylinder that has an internal chamber; the enclosing cylinder has in its longitudinal wall near the top, a tube that acts as an input for the steam coming from the boiler; and close to the lower part an outlet pipe in which the condensed steam will be expelled, in this way the steam coming from the boiler will be circulated through the internal chamber that is formed of smooth side walls, of the enclosing cylinder; inside the internal chamber of the enclosing cylinder is housed a cartridge consisting of a pair of circular plates that we call mirrors and a series of tubes or tubines positioned vertically and at their upper and lower ends each of the tubins are welded on the circular plates or mirrors, the diameter of each plate is approximately equal to the internal diameter of the enclosing cylinder thus forming a kind of cartridge.

Through the inner diameter of each of the tubines flows the cold water that will be heated. The enclosing cylinder is designed to withstand a test pressure of up to 10 / cm2, so in its internal chamber is able to circulate the water vapor which will have contact with each of the tubines that comprises the cartridge making the transfer of heat that is made by absorbing the temperature of the steam by the tubines, thus heating the water circulating inside the tubines by cooling the steam, converting it into condensate (warm water).

In the lower part of the enclosing cylinder is welded a stainless steel flange that serves as a fastening means that is coupled with the cold water inlet bell and in the upper part of the enclosing cylinder it is also welded stainless steel flange that serves as fastening means that is coupled with the hot water outlet hood of the heater.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows the boiler water heater according to the present invention.

Figure 2 shows an inside view of the boiler water heater, in which a longitudinal cut is observed in the steel duct or straight-wrap cylinder, which houses inside a cartridge consisting of a series of tubes, according to the present invention.

Figure 3 shows independently each of the elements that make up the boiler water heater, Figure 4 shows a representative embodiment of the installation of the boiler water heater of the present invention.

DETAILED DESCRIPTION OF THE INVENTION.

The present invention provides a boiler water heater (1) as shown in Figure 1, which is formed of a stainless steel casing cylinder (2), an upper flange (3) is welded to its upper part of the enclosing cylinder. Stainless steel that has the function of fastening and coupling with the outlet duct where the hot water will circulate; A lower flange (4) made of stainless steel is also welded to the lower part of the enclosing cylinder. It has the function of holding and coupling with the cold water inlet duct, which is where the boiler water heater will be fed (1). ).

On the outer wall of the enclosing cylinder (2) near and below the top flange (3) locate the steam inlet duct (5) that is welded to the outer wall of the enclosing cylinder (2), through the steam inlet duct (5) will circulate the steam coming from the boiler as main energetic power supply for the operation of the boiler water heater (1).

On the outer wall of the enclosing cylinder (2) near and above the lower flange (4) locate the condensate steam outlet duct (6) which is also welded to the outer wall of the enclosing cylinder (2), through the steam outlet duct (6) circulate the condensed steam once it has circulated by the internal chamber of the enclosing cylinder (2) of the boiler water heater (1).

In figure 1 it can be seen that both the upper (3) and outer (4) flanges have a series of perforations (X) along their circumference, said perforations serve as fastening means for the screws and nuts which facilitate the assembly and disassembly of the boiler water heater (1) of the present invention.

Figure 2 shows, through a longitudinal section, an internal view of the boiler water heater (1) in which the water heater is formed of a stainless steel casing cylinder (2); in its upper part of the enclosing cylinder (2) is welded an upper flange (3) of stainless steel that has the function of subjection and coupling with the outlet duct where the hot water will circulate; in the lower part of the enclosing cylinder (2) there is also a lower flange (4) made of stainless steel that has the function of fastening and coupling with the cold water inlet duct, which is where the water heater is fed to. boiler (1) and on the outer wall of the enclosing cylinder (2) near and below the upper flange (3) is the steam inlet duct (5) which is welded to the outer wall of the enclosing cylinder (2) , through the steam inlet duct (5) the steam coming from the boiler is circulated inside the thermal chamber (12) which is defined by the length of the cartridge (7). The cartridge (7) consists of a series of tubes or tubines, each of the tubines (T) at their upper end are joined (welded) to a perforated mirror plate (8), said tubines also at their lower end are joined ( soldiers) to another perforated mirror plate (9) which is equal to the perforated mirror plate (8); the perforated mirror plates (8) and (9) have approximately the same diameter of the inner chamber of the enclosing cylinder (2), in this way they form the cartridge (7) that fits perfectly inside the enclosing cylinder (2). The cartridge (7) is one of the main elements of the water heater for boilers (1) of the present invention since through each of the tubines that make up the cartridge (7) circulate the cold water that in its path will be heated by the steam coming from the boiler that enters through the duct (5) to the thermal chamber (12), it is necessary to mention that the perforated mirror plate (8) also acts as a means to isolate the hot water chamber (10) and the thermal chamber (12) where the steam circulates and the perforated mirror plate (9) also acts as a means to isolate the cold water chamber (11) and the thermal chamber (12) where the steam circulates.

The cartridge (7) is positioned in the internal intermediate part of the enclosing cylinder, where the thermal chamber (12) is formed between the perforated mirror plates (8) and (9) that hold the series of tubines (T), where the steam coming from the boiler that enters through the duct (5) is circulated through the thermal chamber while the cold water to be heated flows inside the tubines (T), which on its outer surface are in contact with the steam coming from the tube (5), in this way the heat transfer of the steam to the surface of the tubines (outer part of the tubines) is transferred by transferring the temperature of the steam towards the inner part of the tubines through which it flows the cold water and this is heated in counterflow of the circulation of the steam coming from the boiler through the thermal chamber (since the lower part of the tubines enters cold water) in this way the cold water is heated in a matter of fraction of yourself low, going from 15 ° C to 60 ° C.

Once the heat transfer of the steam coming from the boiler has been achieved and due to the heat loss said steam will be condensed becoming part of the warm water, where it will be drained through the condensate steam outlet duct (6) located on the same longitudinal axis where the steam inlet duct (5) of the outer wall of the enclosing cylinder (2) is located, the condensed steam outlet duct (6) is located near and above the flange lower (4), which is also welded to the outer wall of the enclosing cylinder (2).

The cold water chamber (11) is defined in the lower and inner part of the enclosing cylinder (2) after the lower perforated mirror plate (9) of the cartridge (7) to the lower flange (4); where the cold water arrives that is going to heat up.

The hot water chamber (10) is defined in the upper and inner part of the enclosing cylinder (2) after the upper perforated mirror plate (8) of the cartridge (7) up to the upper flange (3); where the already hot water has outlet.

Figure 3 shows the detailed construction system of the parts that make up the boiler water heater (1) and installation view of each of the elements that are: The enclosing cylinder (2) which is the main body of the water heater for hips (1) which houses in its inner chamber the cartridge (7) as shown in detail in figure 2.

It can be seen that the enclosing cylinder (2) in its longitudinal wall near its upper end locates the hole (01) having the same diameter as the external diameter of the steam inlet duct (5), to achieve a better coupling in the armed. In the same longitudinal axis in which the hole (01) is located near the lower end of the enclosing cylinder, the hole (02) is observed, which also has the same diameter as the external diameter of the condensed steam outlet duct (6) with the purpose of achieving a better coupling in the assembly and welding of each one of said elements, The inner diameter of the upper (3) and lower (4) flanges is the same as the internal diameter of the enclosing cylinder (2), these in the assembly process will be welded to the enclosing cylinder in order to be used as coupling means and support for the installation of the boiler water heater (1), which allows the boiler water heater (1) to be easy to assemble and disassemble by maintenance or repair preventing the boiler from shutting down and the service to be completely suspended.

The cartridge 7 is the key device in the operation of the boiler water heater (1); which consists of a series of tubes or tubes (T) which are mounted and welded at their upper end in a perforated mirror plate (8), in the same way each of the tubes (T) at its lower end will also be mounted and soldiers in a perforated mirror plate (9). It is important to note that the perforated mirror plates (8) and (9) are practically the same and have a diameter approximately equal to the internal chamber of the enclosing cylinder (2).

It is worth mentioning that all the parts or elements that make up the water heater for boilers (1) are made of aluminum material due to its excellent capacity in heat transfer as well as being an anticorrosive material and where each of the pieces are welded in its assembly to manufacture the boiler water heater (1).

Figure 4 illustratively illustrates a mounting mode of a boiler water heater (1), installed on the side of a direct flame aquapubular boiler (E) where the steel tube (SI) that goes welded is appreciated to the hot water pipe (C) and to the longitudinal wall of the direct flame aquatubular boiler (E), said steel pipe (SI) only works as a support (brace), in the same way the steel pipe (S2) goes welded to the cold water pipe (F) and to the longitudinal wall of the direct flame aqualubular boiler (E), also said steel pipe (S2) only works as a support (brace).

The cold water pipe (F) is observed as the connection that supplies cold water to the boiler water heater (1) through hydraulic connections, in this mode the use of a bell-type reducer (R2) is made. The cold water circulates from bottom to top through the cartridge (7) that is in the thermal chamber that is formed inside the internal chamber of the enclosing cylinder (2), while the steam coming from the boiler enters the thermal chamber of the Surrounding cylinder (2) through the duct (5); the steam circulates inside the thermal chamber from top to bottom, opposite to the circulation of the cold water through the tubines that make up the cartridge (7), so that the steam has direct contact with the external surface of each of the tubins that make up the cartridge (7) thus transferring the temperature of the steam towards the inner part of each of the tubines through which the cold water circulates which is heated against flow with respect to the circulation of the steam, once the steam transfers its temperature to the tubines and to the water, this tends to condense and much of it turns into warm water which will be drained through the pipeline 6.

The water heater for boiler (1) to be formed as another instrument of the aquatubular boiler of direct flame (E) efficient water heating, this heater can send hot water directly to hot water distribution lines or to a tank of hot water storage (not shown in Figure 4).

Having described the invention as above, the content of the following claims is claimed as property.

Claims (8)

1. - A boiler water heater characterized in that: it is formed of a stainless steel casing cylinder (2); in its upper part of the enclosing cylinder (2) is welded an upper flange (3) of stainless steel that has the function of fastening and coupling with the outlet duct where the hot water will circulate; in the lower part of the enclosing cylinder (2) there is also a lower flange (4) made of stainless steel that has the function of fastening and coupling with the cold water inlet duct, which is where the water heater is fed to. boiler (1) and on the outer wall of the enclosing cylinder (2) near and below the upper flange (3) is the steam inlet duct (5) which is welded to the outer wall of the enclosing cylinder (2) , through the steam inlet duct (5) the steam coming from the boiler is circulated inside the thermal chamber (12) which is defined by the length of the cartridge (7). The cartridge (7) consists of a series of tubes or tubines, each of the tubines (T) at their upper end are joined (welded) to a perforated mirror plate (8), said tubines also at their lower end are joined ( soldiers) to another perforated mirror plate (9) which is equal to the perforated mirror plate (8); the perforated mirror plates (8) and (9) have approximately the same diameter of the inner chamber of the enclosing cylinder (2), in this way they form the cartridge (7) that fits perfectly inside the enclosing cylinder (2). The cartridge (7) is one of the main elements of the water heater for boilers (1) of the present invention since through each of the tubines that make up the cartridge (7) circulate the cold water that in its path will be heated by the steam coming from the boiler that enters through the duct (5) to the thermal chamber (12), it is necessary to mention that the perforated mirror plate (8) also acts as a means to isolate the hot water chamber (10) and the thermal camera (12) where the steam circulates and the perforated mirror plate (9) also acts as a means to isolate the cold water chamber (11) and the thermal chamber (12) where the steam circulates.

2. - The boiler water heater according to claim 1 further characterized in that: the cartridge (7) is positioned in the internal intermediate part of the enclosing cylinder, where the thermal camera (12) is formed between the perforated mirror plates (8) ) and (9) that hold the series of tubines (T), where the steam coming from the boiler entering through the duct (5) is circulated through the thermal chamber while the cold water to be heated flows in the inside the tubines (T), which in their outer surface are in contact with the steam coming from the tube (5), in this way the transfer of heat from the steam to the surface of the tubines is achieved (outer part of the tubines) by transferring the temperature of the steam towards the inner part of the tubines through which the cold water flows and this is heated against the flow of the steam coming from the boiler through the thermal chamber (since the lower part of the the cold water enters the tubes), so that the cold water heats up in a fraction of a second, going from 15 ° C to 60 ° C.

3. - The boiler water heater according to claim 2 further characterized in that: on the same longitudinal axis, in which the steam inlet duct (5), of the outer wall of the enclosing cylinder (2) is located of the condensed steam outlet duct (6) that drained the condensed vapor that part turns into warm water, from the thermal chamber (12), once the heat transfer of the steam coming from the boiler to the water has been achieved that circulates inside the tubines (T) of the cartridge (7).

4. - The boiler water heater according to claim 3 further characterized in that: inside the internal chamber of the enclosing cylinder a cold water chamber (1 1) is formed which is defined in the lower and inner part of the enclosing cylinder (2) ) after the lower perforated mirror plate (9) of the cartridge (7) to the lower flange (4); where the cold water arrives that is going to heat up.

5. - The boiler water heater according to claim 3 further characterized in that: inside the internal chamber of the enclosing cylinder a hot water chamber (10) is formed which is defined in the upper and inner part of the enclosing cylinder (2) after the upper perforated mirror plate (8) of the cartridge (7) up to the upper flange (3); where the already hot water has outlet.

6. - The boiler water heater according to claim 1 further characterized in that: The inside diameter of the upper (3) and lower (4) flanges is the same as the internal diameter of the enclosing cylinder (2), and where you are in the assembly process will be welded to the enclosing cylinder in order to be used as coupling and securing means for the installation of the boiler water heater (1), which allows the boiler water heater (1) to be easily assemble and disassemble for maintenance or repair, preventing the boiler from shutting down and stopping the service completely. 7. - The water heater for boiler according to claim 1 further characterized in that: The cartridge (7) is formed of a series of tubes or tubines (T) which are mounted and welded at its upper end in a perforated mirror plate ( 8), in the same way each of the tubines (T) at its lower end will also be mounted and welded on a perforated mirror plate (9). It is important to note that the perforated mirror plates (8) and (9) are practically the same and have a diameter approximately equal to the internal chamber of the enclosing cylinder (2).

7. - The boiler water heater according to claim 1, further characterized in that: the upper flange (3) and outer flange (4) have a series of perforations (X) along their circumference, said perforations serve as fastening means for the screws and nuts which facilitate the assembly and disassembly of the boiler water heater (1).

8. - The boiler water heater according to any of the preceding claims further characterized because: all parts or elements that make up the water heater for boilers (1) are made of aluminum material due to its excellent heat transfer capacity In addition to being an anticorrosive material and where each of the pieces are welded for assembly and assembly.