High efficiency stainless steel condensing boiler

Abstract

The utility model provides high -efficient stainless steel condensing boiler, including base, the base top is provided with boiler body, one side of boiler body is equipped with the air blower, forms the combustion chamber of airtightness in boiler body, the top of air blower is equipped with the burner, and the output end of burner is equipped with the combustion head, and the combustion head is located the above of combustion chamber, and the heat exchange device is provided with the communicating pipe in combustion chamber below one side top, and the communicating pipe is linked together with the combustion chamber, the heat exchange device is equipped with the return flue pipe in the side away from communicating pipe, and the return flue pipe output end connects the rear smoke case, and the rear smoke case is fixed on the side wall of boiler body, and the rear smoke case top is equipped with the smoke outlet, the flue gas is divided into three return, and the first return combustion head carries out heating, and the second return flue gas passes through the communicating pipe and enters the front smoke case, reaches the effect that the full heat exchange, and the flue gas releases the condensing heat in the middle lower part of heat exchange sheet, and the third return flue gas enters the rear smoke case through the return flue pipe, and forms the even airflow field in the combustion chamber, ensures the even distribution of heat.

Description

Technical Field

[0001] This utility model relates to the field of boilers, and more particularly to a high-efficiency stainless steel condensing boiler. Background Technology

[0002] Compared to traditional boiler technology, condensing boilers excel in heating speed, achieving the desired warmth in a shorter time. The development and application of condensing boiler technology not only improves heating efficiency in buildings and industry but also provides strong technical support for achieving national energy conservation and emission reduction policies.

[0003] A Chinese patent application (CN202222842930.4) discloses an energy-saving water circulation device for a natural gas steam boiler. The device includes a natural gas steam boiler body, with a gas generator installed at the left end and a steam delivery pipe fixedly installed on the upper right side of the boiler body. This energy-saving water circulation device utilizes a steam-water separator to separate the output steam from water, increasing its dryness. The separated water is then sent to a water storage tank via a connecting pipe. Simultaneously, the heated steam is recovered through a steam recovery pipe, allowing it to enter a cooling coil. In the cooling coil, the steam exchanges heat with the water in the storage tank, condensing into water. This condensate then flows through a circulation pipe into a condensate recovery tank, facilitating water recycling. Furthermore, the waste heat from the steam is used to heat the water in the storage tank, achieving waste heat utilization, reducing energy consumption, and improving practicality.

[0004] However, the above-mentioned patent has certain defects in use. Because the heat generated in the heating chamber of the steam boiler is difficult to spread evenly to the entire body of the energy-saving steam boiler, it will cause local excessively high temperature or uneven heating and cooling, which will reduce thermal efficiency and cause energy loss.

[0005] To address these issues, a high-efficiency stainless steel condensing boiler is proposed. Utility Model Content

[0006] In order to overcome the problem of excessively high local temperature or uneven heating and cooling in existing steam boilers, which leads to reduced thermal efficiency and insufficient energy consumption, this utility model provides a high-efficiency stainless steel condensing boiler.

[0007] This utility model is achieved using the following technical solution: A high-efficiency stainless steel condensing boiler includes a base, a boiler body on top of the base, a blower on one side of the boiler body, a sealed combustion chamber formed inside the boiler body, a burner installed on top of the blower, a burner head at the output end of the burner located above the combustion chamber, a heat exchange device below the combustion chamber, and a connecting pipe on the top side of one side of the heat exchange device, the connecting pipe being connected to the combustion chamber. The heat exchange device is provided with a return smoke pipe on the side away from the connecting pipe. The output end of the return smoke pipe is connected to the rear smoke box. The rear smoke box is fixed on the side wall of the boiler body, and the top of the rear smoke box is provided with a smoke exhaust port.

[0008] As a preferred embodiment of this utility model, the heat exchange device includes a front smoke box and an energy-saving device. The front smoke box is located at the front end of the heat exchange device and is connected to a connecting pipe. The energy-saving device is located at the rear side of the front smoke box and is connected to a return smoke pipe. The front smoke box and the energy-saving device form a sealed combustion chamber, and the energy-saving device has multiple threaded heat exchange fins built in.

[0009] As a preferred embodiment of this utility model, a flue drain outlet is provided on one side of the boiler body, and the side of the flue drain outlet passes through the boiler body and connects to the front smoke box.

[0010] As a preferred embodiment of this utility model, the plurality of the threaded heat exchange plates are evenly distributed and arranged in a circular pattern.

[0011] As a preferred embodiment of this utility model, an inlet is provided on the top of the boiler body, the inlet is connected to the combustion chamber, and a flow detector is installed at the end of the inlet.

[0012] As a preferred embodiment of this utility model, a drain pipe is provided at the bottom of the rear smoke box, and the bottom of the drain pipe is connected to the smoke duct drain outlet.

[0013] As a preferred embodiment of this utility model, a check sleeve is installed on the flue drain outlet.

[0014] Compared with existing technologies, the advantages of this utility model are: 1. By dividing the boiler body into a combustion chamber and a recirculation chamber, the flue gas is divided into three passes. The first pass burner heats the burner head, causing the combustion chamber temperature to rise rapidly. The second pass flue gas enters the front smoke box through a connecting pipe, allowing the flue gas to circulate evenly in each heat exchange fin, achieving a full heat exchange effect. The flue gas releases condensation heat in the middle and lower part of the heat exchange fin. The third pass flue gas enters the rear smoke box through the return smoke pipe and is discharged through the exhaust port. By forming a uniform airflow field in the combustion chamber, the heat is evenly distributed, avoiding local overheating or uneven heating.

[0015] 2. The unique design of multiple threaded heat exchange fins located inside the energy-saving device, arranged in a circular pattern, allows the flue gas to circulate evenly in each heat exchange fin, achieving a full heat exchange effect.

[0016] 3. Install a flow detector at the inlet to accurately monitor the fuel input, and install a temperature sensor at the exhaust outlet to monitor the exhaust temperature in real time, thereby reducing energy waste. Attached Figure Description

[0017] Figure 1 This is a front structural view of the boiler body of this utility model; Figure 2 This is a left view of the boiler body of this utility model; Figure 3 This is a top view of the boiler body of this utility model; Figure 4 This is a cross-sectional view of the internal structure of the boiler body of this utility model; Figure 5 This is a side sectional view of the internal structure of the boiler body of this utility model; In the diagram: 1. Boiler body; 11. Base; 12. Blower; 13. Burner; 14. Inlet; 15. Flow detector; 2. Burner head; 21. Connecting pipe; 3. Heat exchanger; 31. Front smoke box; 32. Eco-friendly device; 33. Threaded heat exchange fins; 4. Return smoke pipe; 5. Rear smoke box; 51. Exhaust port; 52. Temperature detector; 6. Flue drain outlet; 61. Drain pipe; 62. Check sleeve; 100. Combustion chamber; 200. Recirculation chamber. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Example: Please see Figures 1-5 A high-efficiency stainless steel condensing boiler includes a base, a boiler body 1 on top of the base, a blower 12 on one side of the boiler body 1, a sealed combustion chamber 100 formed inside the boiler body 1, a burner 13 installed on top of the blower 12, a burner head 2 at the output end of the burner 13, the burner head 2 being located above the combustion chamber 100, a heat exchange device 3 below the combustion chamber 100, a connecting pipe 21 on the top of one side of the heat exchange device 3, and the connecting pipe 21 being connected to the combustion chamber 100.

[0020] In this embodiment, the base serves as a support, and the boiler body 1 is installed on the top of the base. A blower 12 is installed on the top of the base next to the boiler body 1. The interior of the boiler body 1 is a closed combustion space, which is a combustion chamber 100. A burner 13 is installed on the top of the blower 12. The output end of the burner 13 is connected to the burner head 2. The burner head 2 is positioned above the combustion chamber 100. The combustion chamber 100 is divided into upper and lower parts. The lower part of the combustion chamber 100 is equipped with a heat exchange device 3. The heat exchange device 3 is connected to the combustion chamber 100 through a connecting pipe 21. When the fuel is burning, the burner 13 works and heats the burner head 2, causing the temperature of the combustion chamber 100 to rise rapidly. The high-temperature flue gas enters the heat exchange device 3 through the connecting pipe 21.

[0021] The heat exchange device 3 is provided with a return flue pipe 4 on the side away from the connecting pipe 21. The output end of the return flue pipe 4 is connected to the rear smoke box 5. The rear smoke box 5 is fixed on the side wall of the boiler body 1. The top of the rear smoke box 5 is provided with a flue outlet 51.

[0022] In this embodiment, a connecting pipe 21 is located on one side of the top of the heat exchange device 3. The function of the connecting pipe is to introduce high-temperature flue gas into the heat exchange device 3. A return flue pipe 4 is provided on the side of the top of the heat exchange device 3 away from the connecting pipe 21. The function of the return flue pipe 4 is to export the low-temperature flue gas after heat exchange in the heat exchange device and send it to the rear smoke box 5. The rear smoke box 5 is fixed to the side wall of the boiler body 1. A flue gas outlet 51 is provided on the top of the rear smoke box 5. The flue gas outlet 51 is connected to external equipment and finally discharges the flue gas.

[0023] Specifically, the heat exchange device 3 includes a front smoke box 31 and an energy saver 32. The front smoke box 31 is located at the front end of the heat exchange device 3 and is connected to the connecting pipe 21. The energy saver 32 is located at the rear of the front smoke box 31 and is connected to the return smoke pipe 4. The front smoke box 31 and the energy saver 32 form a sealed combustion chamber 200, and the energy saver 32 has multiple threaded heat exchange plates 33 built in.

[0024] In this embodiment, the heat exchanger comprises two parts: a front smoke box 31 and an energy-saving device 32. The front smoke box 31 is connected to the connecting pipe 21, and the energy-saving device 32 is connected to the return smoke pipe 4. Together, they form a sealed combustion chamber 200, improving thermal efficiency. The energy-saving device 32 is equipped with multiple threaded heat exchange fins 33, which are evenly distributed and arranged in a circular pattern. This circular arrangement allows the flue gas to circulate evenly within each threaded heat exchange fin 33, achieving a thorough heat exchange effect. The boiler body 1 adopts a horizontal three-pass design. The flue gas is divided into three passes. In the first pass, the burner 13 heats the burner head 2, causing the temperature of the combustion chamber 100 to rise rapidly. In the second pass, the flue gas enters the front smoke box 31 through the connecting pipe 21, allowing the flue gas to circulate evenly in each threaded heat exchange fin 33, achieving a full heat exchange effect. The flue gas releases condensation heat in the middle and lower part of the threaded heat exchange fin 33. In the third pass, the flue gas enters the rear smoke box 5 through the return smoke pipe 4 and is discharged through the exhaust port 51. By forming a uniform airflow field in the combustion chamber 100, the heat is evenly distributed, avoiding local overheating or uneven heating.

[0025] Specifically, a flue drain outlet 6 is provided on one side of the boiler body 1, and the side of the flue drain outlet 6 passes through the boiler body 1 and is connected to the front smoke box 31.

[0026] In this embodiment, a flue drain outlet 6 is provided on the side of the boiler body 1 away from the blower 12. The flue gas releases condensation heat in the middle and lower part of the threaded heat exchange plate 33, fully absorbing the residual condensation heat, and then the remaining condensate is discharged through the flue drain outlet 6.

[0027] Specifically, the boiler body 1 is provided with an inlet 14 on the top, the inlet 14 is connected to the combustion chamber 100, and a flow detector 15 is installed at the end of the inlet 14.

[0028] In this embodiment, an inlet 14 is provided on the top of the boiler body 1. A flow detector 15 is provided at the inlet and outlet ends of the inlet 14 to accurately monitor the fuel input. The inlet 14 is connected to the combustion chamber 100. The material enters the combustion chamber 100 through the inlet 14, and the flow detector 15 provides real-time feedback data.

[0029] Specifically, a drain pipe 61 is provided at the bottom of the rear smoke box 5, and the bottom of the drain pipe 61 is connected to the flue drain outlet 6.

[0030] In this embodiment, a drain pipe 61 is connected to the bottom of the rear smoke box 5. The third-pass flue gas condenses into water in the drain pipe 61 and is transported to the flue drain outlet 6 through the drain pipe 61 to ensure that the condensate is effectively discharged and to prevent accumulation from affecting the operation of the boiler.

[0031] Specifically, a check sleeve 62 is installed on the flue drain outlet 6.

[0032] In this embodiment, the function of the flue drain outlet 6 is to connect the front smoke box 31 and the rear smoke box 5, to ensure smooth discharge of condensate and avoid water accumulation affecting thermal efficiency. The check sleeve 62 is installed at the flue drain outlet 6 to prevent condensate backflow and ensure stable operation of the drainage system.

[0033] The principle of this invention is as follows: the flue gas is divided into three passes. In the first pass, the burner 13 heats the burner head 2, causing the temperature of the combustion chamber 100 to rise rapidly. In the second pass, the flue gas enters the front smoke box 31 through the connecting pipe 21, allowing the flue gas to circulate evenly in each threaded heat exchange plate 33, achieving a full heat exchange effect. The flue gas releases condensation heat in the lower middle part of the threaded heat exchange plate 33. The threaded heat exchange plate 33 is arranged in a circular pattern, allowing the flue gas to circulate evenly in each threaded heat exchange plate 33, achieving a full heat exchange effect. In the third pass, the flue gas enters the rear smoke box 5 through the return smoke pipe 4 and is discharged through the exhaust port 51. By forming a uniform airflow field in the combustion chamber 100, the heat is evenly distributed, avoiding local overheating or uneven heating.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A high-efficiency stainless steel condensing boiler, comprising a base, a boiler body (1) mounted on top of the base, and a blower (12) mounted on one side of the boiler body (1), characterized in that: A sealed combustion chamber (100) is formed inside the boiler body (1). A burner (13) is installed on the top of the blower (12). A burner head (2) is provided at the output end of the burner (13). The burner head (2) is located above the combustion chamber (100). A heat exchange device (3) is provided below the combustion chamber (100). A connecting pipe (21) is provided on the top of one side of the heat exchange device (3). The connecting pipe (21) is connected to the combustion chamber (100). The heat exchange device (3) is provided with a return smoke pipe (4) on the side away from the connecting pipe (21). The output end of the return smoke pipe (4) is connected to the rear smoke box (5). The rear smoke box (5) is fixed on the side wall of the boiler body (1). The top of the rear smoke box (5) is provided with a smoke exhaust port (51).

2. The high-efficiency stainless steel condensing boiler according to claim 1, characterized in that: The heat exchange device (3) includes a front smoke box (31) and an energy saver (32). The front smoke box (31) is located at the front end of the heat exchange device (3) and is connected to the connecting pipe (21). The energy saver (32) is located behind the front smoke box (31) and is connected to the return smoke pipe (4). The front smoke box (31) and the energy saver (32) form a sealed combustion chamber (200), and the energy saver (32) has multiple threaded heat exchange plates (33) built in it.

3. The high-efficiency stainless steel condensing boiler according to claim 2, characterized in that: A flue drain outlet (6) is provided on one side of the boiler body (1), and the flue drain outlet (6) passes through the boiler body (1) and is connected to the front smoke box (31).

4. The high-efficiency stainless steel condensing boiler according to claim 2, characterized in that: The multiple threaded heat exchange plates (33) are evenly distributed and arranged in a circular pattern.

5. The high-efficiency stainless steel condensing boiler according to claim 3, characterized in that: The boiler body (1) is provided with an inlet (14) at the top, the inlet (14) is connected to the combustion chamber (100), and a flow detector (15) is installed at the end of the inlet (14).

6. The high-efficiency stainless steel condensing boiler according to claim 5, characterized in that: The bottom of the rear smoke box (5) is provided with a drain pipe (61), and the bottom of the drain pipe (61) is connected to the flue drain outlet (6).

7. The high-efficiency stainless steel condensing boiler according to claim 6, characterized in that: A check sleeve (62) is installed on the flue drain outlet (6).

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