UA70412C2 - Combined water-heating boiler combined water-heating boiler - Google Patents

Abstract

This invention relates to the structure of the through water-heating boilers suitable for the systems of water heating and hot water supply. The boiler has cylindrical housing with branch pipes for water being heated supply and discharge. In the housing vertical transverse partitions are placed as well, with overflow windows, those are placed in turns at the above and at the beneath, in the lower part a fire tube is installed eccentrically; rotary chamber, smoke pipes, those are placed symmetrically over the fire tube. One end of the fire tube is connected to the burner, and the other one û to the rotary chamber. The smoke pipes are connected at one end to the rotary chamber, and at the other one û to the smoke duct. In the walls of the outlet part of the fire tube and at the whole length of the smoke pipes transverse water pipes are installed. Those are placed in rows, with inclination at different angles in long section of the fire and the smoke pipes. The ends of the transverse water pipes are bended and placed in radial positions with respect to the transverse cross-section of the fire and the smoke pipes, and the length of the bended ends of the transverse water pipes is equal to the thickness of the walls of the fire and the smoke pipes. The boiler provides intensive heat supply to water being heated.

Description

Description of the invention

The proposal concerns the construction of combined flow water heating, mainly mobile, boilers, in which 2 water is separated from the heating medium. The boiler is used for water heating systems and hot water supply of residential, public and industrial buildings, baths or laundries.

Boilers of this type require high operational reliability, a high (more than 9095) thermal efficiency coefficient and minimal material consumption and manufacturability during manufacture.

The well-known combined water heating boiler (US patent Mo3848573 M.kl. E2287/12, publ. 1974), which has a 70 cylindrical body with nozzles for the supply of heated water and the removal of heated water, a heat pipe eccentrically placed in the lower part of the body, one end of which is connected to the burner, and the other is open to the rotary chamber, and no less than two chimney pipes, symmetrically located above the heat pipe and connected on one side to the rotary chamber, and on the other - to the chimney. At the same time, the nozzles for the supply of water that is heated and the removal of heated water are located in the middle part of the boiler body, and the chimney pipes 12 have a diameter that is much smaller than the diameter of the heat pipe and which are usually collected in the form of a bundle.

Flow rate of the heat pipe in connection with. the intensive movement of flue gases into the chimney helps equalize the heat load along the heat pipe. But this is not enough for the most intensive heat sink from its initial section because the cold water that is supplied for heating comes into contact with the heat exchange elements and leaves contact with them mainly in the middle part of the boiler. That is why stagnant zones appear near the ends of the heat and chimney pipes, which are all the more noticeable, the more the boiler is filled with these pipes.

Among the well-known ones in terms of technical essence, the closest to the proposal is the combined water heating boiler (Reshenie

VNIHGPZ dated 08/23/94. about the grant of a patent for an invention according to the application Mo5014064/06 M.cl. Е24Н1/28, Е2207/06), which contains a cylindrical body with nozzles for the supply of water that is heated and the removal of heated water, with an eccentrically placed heat pipe in the lower part of the body, one end of which is connected to the burner, and Э) the other - with a rotary chamber, two chimney pipes symmetrically placed above the fire pipe and connected on one side to the rotary chamber, and on the other to the chimney, as well as transverse water pipes installed in the walls of the tail part of the fire pipe and along the entire length of the chimneys pipes, and the transverse water pipes are arranged in rows, which are inclined relative to the longitudinal section of the heat and flue pipes, respectively, at different angles up to 45 degrees, and in the cylindrical body, transverse partitions with pe bypass windows are inserted, which are made alternately from above and below.

Transverse water pipes installed in heat pipes and chimneys are straight. The intersection of the transverse water tubes with the surface of the heat and chimney pipes follows an ellipse and has a relatively large perimeter length (from the intersection. In addition, the rows of tubes, which are installed vertically, direct the water that passes through the tubes in a parallel flow to the main flow , which washes the heat and chimney pipes, which does not contribute to the intensification of the mixing process of the water that is heated. It thereby reduces the cooling effect of the most heat-prone part of the heat pipe and chimney pipes, which leads to a reduction in the overall life of the boiler.

The basis of the proposal is the task of improving the combined water heating boiler, in which, as a result of the change in the shape and location of the ends of the transverse water tubes in the thickness of the walls of the heat and flue pipes, the length of the perimeter of the intersection of the transverse water tubes with the heat and flue pipes decreases, as well as the direction of water exit from transverse water pipes, and due to this, costs are reduced when they are installed, including metal costs, as well as heat dissipation is intensified, the cooling effect of the hottest parts of the furnace and chimney pipes is improved, and the life of the boiler is increased.

The task is achieved by the fact that in a combined water heating boiler, which contains a cylindrical it. body with nozzles for the supply of water that is heated and the removal of heated water, as well as with two vertical av! transverse partitions with bypass windows, which are made alternately from above and below, an eccentrically placed heat pipe in the lower part of the body, one end of which is connected to the burner, and the other - to the rotary chamber, smoke pipes symmetrically placed above the heat pipe and connected on one side -sh 20 to the rotating chamber, and on the other - to the chimney, as well as transverse water pipes, installed in the walls of the outlet part of the heat pipe and along the entire length of the chimney pipes and arranged in rows, with an inclination relative to the longitudinal section of the heat pipe and chimney pipes at different angles, according to the proposal, the ends of the transverse water pipes are curved and located radially relative to the cross section of the furnace and chimney pipes, and the length of the curved ends of the transverse water pipes is equal to the thickness of the walls of the furnace and chimney pipes. 29 Radial arrangement of the ends of curved transverse water pipes in the thickness of the walls of the furnace and chimney

HF) pipes reduces the length of the perimeter of the intersection of transverse water pipes with heat and chimney pipes and, thereby, reduces manufacturing costs, including by reducing metal consumption, because with the radial arrangement of the ends of the transverse water pipes, the need to cut the ends has disappeared tubes that protrude above the outer surface of the heat and smoke pipes, which occurs when the transverse 60 water tubes in the heat and smoke pipes are arranged straight, as in the prototype.

For radial arrangement, the ends of the transverse water tubes are bent at an angle to the axis of the main part of these tubes. The angle depends on the location of the tubes. The further the tube is located from the axis of the heat and chimney pipes, the greater the angle. But the difference in angles is small. The costs of manufacturing the curved ends of the tubes are relatively small, i.e. it is enough to bend the ends of the tubes radially to a length equal to the thickness of the walls of the furnace and chimney pipes. But the radially located ends of the transverse water tubes in the walls of the heat and chimney pipes force the water that passes through the transverse water tubes to exit from the ends of these tubes at an angle to the main flow. This increases the intensity of water mixing and increases the cooling effect of the hottest areas of the furnace and chimney pipes.

The proposed boiler is shown in the drawings:

Fig. 1 - in longitudinal section;

Fig. 2-in cross-section;

Fig. C - the location of the ends of the transverse water pipes in the thickness of the walls of the furnace and chimney pipes.

The proposed combined water heating boiler contains a horizontal cylindrical body 1 with an inlet 70 nozzle 2 for the supply of water that is heated and an outlet nozzle C for the removal of heated water, located at the bottom and top of the body 1, respectively, as well as with two vertical transverse partitions 4 with bypass windows, located alternately above and below. Partitions 4 are installed between nozzles 2 and C and divide the length of the cylindrical body 1 into three approximately equal parts. In the cylindrical housing 1, a heat pipe 5 is placed eccentrically in its lower part, and above the heat pipe 5 in the upper part 7/5 of the cylindrical housing 1, two chimney pipes 6 are placed symmetrically to each other. A burner 7 is installed from the inlet end of the cylindrical housing 1, which with connected to the heat pipe 5 and located along its axis. A rotating chamber 8 is attached to the output end of the heat pipe, located along the axis of the cylindrical housing 1 and is also connected to the inlet ends of the chimney pipes 6, and to the safety ("explosion") valve 9 located at the output end of the cylindrical housing 1 along its axis. A in the outlet part of the heat pipe 5 and along the entire length of the chimney pipes 6

Transverse water tubes 10 are installed, which are arranged in rows. In each row, the transverse water tubes 10 are located parallel to each other, and the rows themselves are inclined relative to the longitudinal section of the heat and chimney pipes at an angle (a) of up to 45 degrees with an interval of 5 to 15 degrees. In this case, the ends of the tubes 10 are curved and located radially relative to the cross section of the furnace 5 and chimney pipes, and the length of the curved ends of the transverse water pipes 10 is equal to the thickness of the walls of the furnace 5 and chimney 6 pipes. A chimney 11 with a valve 12, connected to the outlet ends of the chimney pipes 6 along their axis, is installed in the inlet part of the cylindrical housing 1 above the burner. and)

The proposed boiler works as follows. First, the water heating system and the boiler are filled with cold chemically purified water. For this purpose, the housing 1 is filled with water through the nozzle 2. At the same time, the transverse water tubes 10 are also filled with water. After filling the boiler, water flows through the nozzle Z and fills the heat supply system with water.

Then the burner 7 is turned on. The fuel-air mixture burns in the heat pipe 5. The heat from the torch, the main one, falls on the inner surface of the heat pipe 5 by radiation and is transmitted through its wall to the water, which takes heat from the outer surface. The products of combustion are successively washed by the transverse water pipes 10 in the outlet part of the heat pipe 5 and after the rotary chamber 8 along the entire length of the smoke pipes 6 and through the chimney 11 enter the smoke pipe. In the case of a blow ("explosion") of the fuel-air mixture, which can happen in the process of ignition of the burner if the torch breaks off during operation, the explosive wave is directed throughout the heat pipe 2, the rotating chamber 8, the safety valve 9 and is extinguished in the atmosphere.

At the same time, the water fed through the lower pipe 2 into the cylindrical body 1, thanks to the transverse partitions 4 with bypass windows, successively washes the outer surfaces of the heat pipe 5, the chimney pipes 6, the inner surfaces of the transverse water pipes 10 and through the upper pipe With the heated leaves the boiler in the heating network.

The cylindrical body 1 of the boiler is structurally divided into sections by means of transverse partitions 4. ;" With two partitions, as in the proposed boiler, the cylindrical body 1 is divided into three sections, with three - into four sections, etc. If necessary, the inlet end of the cylindrical body 1 can be made the same as the outlet end, water-cooled. And then a burner 7 and a chimney 11 with a valve 12 are installed in the inlet water-cooling end of the cylindrical body 1-I. Also, if necessary (to increase the power), the number of chimneys 6 can be more than two. o As you can see, first, cold water (the so-called "return water") is directed into the cylindrical body 1 of the boiler. It effectively removes heat from the most heat-dangerous part of the heat pipe 5. With this not yet very heated water, part of the low-potential heat from the exhaust flue gases is also taken away before - they are directed from the flue pipes 6 through the chimney 11 into the smoke pipe, and thus , increase the thermal efficiency

Ge boiler. In general, that part of the water, which is directed through the transverse water tubes 10, exits at an angle from all rows of tubes 10 to the main flow, which moves vertically (up or down) in the cylindrical body 1, thanks to the partitions 4, and creates an additional intensification of heat dissipation, i.e. improves the cooling effect of the hottest sections of the heat pipe 5 and chimney pipes 6 and, in comparison with the prototype, increases the service life of the boiler.

Ф) Boiler load at a constant water consumption, which depends on the selected temperature schedule (95/70, ka 115/70 or 150/707С), is regulated by changing the fuel consumption. The boiler can work both when liquefying gases (fuel combustion products) and under the pressure of gases in the furnace. 60 b5

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Claims (1)

The formula of the invention -in- Combined water heating boiler, which contains a cylindrical body with nozzles for the supply of water that is heated and the removal of heated water, as well as with vertical transverse partitions with bypass windows, which are made alternately from above and below, a heat pipe eccentrically placed in the lower part of the body, one end which is connected to the burner, and the second - to the rotary chamber, chimney pipes, symmetrically placed above the heat pipe and connected on one side to the rotary chamber, and on the other - to the chimney, as well as transverse water pipes installed in the walls of the outlet part of the fire pipes and along the entire length of the chimney pipes and are located in rows with an inclination in the longitudinal section of the heat and chimney pipes at different angles, which is distinguished by the fact that the ends of the transverse water pipes are curved and located radially 7/0 with respect to the cross section of the heat and chimney pipes, and the length of the curved ends of the transverse water pipes is equal to the thickness of the walls of the furnace and chimney pipes Official bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated microcircuits", 2004, M 10, 15.10.2004. State Department of Intellectual Property of the Ministry of Education and/5 Science of Ukraine. 6) s "- " "c) and - - and? -i ("c) sh" - 70 Ko) ime) 60 b5