Vertical stainless steel efficient hot water boiler

Abstract

The vertical stainless steel efficient hot water boiler comprises a combustion system and a water circulation system, water flow unidirectionally flows from bottom to top, flue gas reversely flows from top to bottom and then from bottom to top, the high-temperature flue gas repeatedly heats the water flow, the heat exchange area is increased, and the heat exchange efficiency is improved; the problems of air resistance, scaling and the like caused by unsmooth water circulation are avoided, the service life of the boiler is prolonged, the maintenance frequency of the boiler is reduced, and the use cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of heating equipment, in particular to a vertical stainless steel high-efficiency hot water boiler. Background Art

[0002] At present, ordinary boilers use a multi-pass water flow and a single-pass flue gas return method to achieve heat exchange. For example, as described in ZL201910034619.7, the water flow circulates up and down in the boiler. Although this solution can increase the heat exchange area and improve the heat transfer efficiency, it is easy to produce air blockage when the boiler is working, resulting in dry burning of the boiler. At the same time, water flow in narrow pipes is also prone to scaling and clogging, causing dry burning and damage to the boiler. This requires frequent maintenance of the boiler, resulting in increased maintenance costs. Summary of the invention

[0003] According to one purpose of the present invention and in combination with the problems raised in the technical background, the present invention provides a vertical stainless steel high-efficiency hot water boiler, comprising a combustion system consisting of a combustion rod, a furnace, an upper flue, finned tubes, a lower flue, a side flue, a top flue, and a smoke outlet, and a water circulation system consisting of a water inlet, a water cavity, an upper water cavity, and a water outlet, wherein the combustion rod is located at the center of the furnace, the upper flue is located at the top of the furnace and the lower part of the upper water cavity, the water cavity is located outside the furnace and inside the side flue, the finned tubes are installed inside the water cavity, the smoke outlet and the water outlet are located at the top of the boiler, the water inlet is located on the bottom side of the boiler, the top flue is located between the smoke outlet and the upper water cavity, and all parts of the boiler are connected by welding.

[0004] Furthermore, the finned tubes are evenly distributed with the boiler axis as the center line, and can be arranged in one circle or multiple circles.

[0005] Furthermore, the inner wall of the furnace and the outer wall of the water chamber may be welded with fins or not.

[0006] Furthermore, the fin tube is made of stainless steel.

[0007] The technical solution of the present invention provides a vertical stainless steel high-efficiency hot water boiler, in which water flows unidirectionally from bottom to top, flue gas flows from top to bottom, and then flows in the reverse direction from bottom to top. The high-temperature flue gas repeatedly heats the water flow, thereby increasing the heat exchange area, improving the heat exchange efficiency, avoiding problems such as air blockage and scaling caused by poor water circulation, extending the service life of the boiler, reducing the frequency of boiler maintenance, and reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0009] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0010] In the figure: 1. combustion rod; 2. furnace; 3. finned tube; 4. water cavity; 5. side flue; 6. lower flue; 7. premixed gas; 8. cold water; 9. water inlet; 10. flue gas; 11. upper flue; 12. upper water cavity; 13. top flue; 14. smoke outlet; 15. water outlet; 16. hot water. DETAILED DESCRIPTION

[0011] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0013] In addition, in the description of the present invention, "multiple" means two or more than two, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0014] Example 1

[0015] like Figure 1As shown, a vertical stainless steel high-efficiency hot water boiler includes a combustion system consisting of a combustion rod 1, a furnace 2, an upper flue 11, finned tubes 3, a lower flue 6, a side flue 5, a top flue 13, and a smoke outlet 14, and a water circulation system consisting of a water inlet 9, a water cavity 4, an upper water cavity 12, and a water outlet 15. The combustion rod 1 is located at the center of the furnace 2, the upper flue 11 is located at the top of the furnace 2 and the lower part of the upper water cavity 12, the water cavity 4 is located outside the furnace 2 and inside the side flue 5, the finned tubes 3 are installed inside the water cavity 4, the smoke outlet 14 and the water outlet 15 are located at the top of the boiler, the water inlet 9 is located on the bottom side of the boiler, the top flue 13 is located between the smoke outlet 14 and the upper water cavity 12, and the finned tubes 3 are evenly distributed with the boiler axis as the center line, and can be arranged in one circle or multiple circles.

[0016] When the present invention is working normally, as a combustion system, the premixed gas 7 composed of natural gas and air enters the combustion rod 1 at the bottom of the boiler, ignites and burns on the surface of the combustion rod 1, and the heat generated is transferred to the cold water 8 in the water cavity 4 through the side wall of the furnace 4, so that the temperature of the cold water 8 gradually increases, and then the flue gas 10 with residual temperature flows upward along the furnace 2 into the upper flue 11, and at this time, the heat is also continuously transferred to the cold water in the upper water cavity 12 through the furnace wall at the top of the furnace 2; at this time, the flue gas 10 flowing into the upper flue 11 turns around and enters the finned tube 3 In the water chamber 2, the heat is further transferred to the cold water 8 in the water chamber 2 through the fin tube 3 immersed in the water chamber 2. The flue gas 10 flowing out of the fin tube 3 is collected in the lower flue 6, where it turns around again and flows upward into the side flue 5. The heat of the flue gas 10 in the side flue 5 is further transferred to the cold water 8 in the water chamber 4 through the outer wall of the water chamber 4. The cold water 8 in the water chamber 4 further absorbs heat and heats up. The flue gas 10 continues to flow upward into the top flue 13. Finally, the flue gas 10 fully absorbed by the cold water 8 is discharged from the boiler through the smoke outlet 14. As a water circulation system, the cold water 8 flows into the water chamber 4 through the water inlet 9, absorbs a large amount of heat transferred from the furnace 2 and the side wall of the side flue 5, and then flows into the upper water chamber 12. In the upper water chamber 12, the heat transferred from the top flue 13 and the upper flue 11 is also absorbed, and becomes usable hot water 16. Finally, it flows out of the boiler through the water outlet 15, realizing the transformation of cold water 8 into hot water 16.

[0017] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vertical stainless steel high-efficiency hot water boiler, characterized in that: The utility model comprises a combustion system consisting of a combustion rod, a furnace, an upper flue, finned tubes, a lower flue, a side flue, a top flue and a smoke outlet, and a water circulation system consisting of a water inlet, a water cavity, an upper water cavity and a water outlet, wherein the combustion rod is located at the center of the furnace, the upper flue is located at the top of the furnace and the lower part of the upper water cavity, the water cavity is located outside the furnace and inside the side flue, the finned tubes are installed inside the water cavity, the smoke outlet and the water outlet are located at the top of the boiler, the water inlet is located at the bottom side of the boiler, and the top flue is located between the smoke outlet and the upper water cavity.

2. A vertical stainless steel high-efficiency hot water boiler according to claim 1, characterized in that: The finned tubes are evenly distributed with the boiler axis as the center line, forming a circle.

3. A vertical stainless steel high-efficiency hot water boiler according to claim 1, characterized in that: The finned tube is made of stainless steel.

4. A vertical stainless steel high-efficiency hot water boiler according to claim 1, characterized in that: The inner wall of the furnace and the outer wall of the water chamber are welded with fins.

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