Boiler body of hot water boiler

Abstract

A hot water boiler body comprises a horizontal heat exchange chamber, the front end of the horizontal heat exchange chamber is provided with a burner connector, the rear portion of the horizontal heat exchange chamber is connected with a vertical heat exchange chamber, the rear portion of the horizontal heat exchange chamber coincides with the lower portion of the vertical heat exchange chamber, N first snakelike heat exchange pipes are installed in the vertical heat exchange chamber and bent left and right in a reciprocating mode from top to bottom, and the N first snakelike heat exchange pipes are connected with the burner connector. The lower end outlets of the N first snakelike heat exchange pipes are connected to the lower header, the lower header is further connected with M second snakelike heat exchange pipes, the M second snakelike heat exchange pipes are bent left and right in a reciprocating mode from bottom to top, the M second snakelike heat exchange pipes extend to the position close to the top of the horizontal heat exchange chamber, and the outlets of the M second snakelike heat exchange pipes are connected to the middle header; the middle collecting pipe is connected with a spiral heat exchange pipe, the spiral heat exchange pipe spirals forwards in the bedroom heat exchange chamber, an outlet of the spiral heat exchange pipe is connected with a water outlet pipe, a water inlet pipe of the boiler body is directly or indirectly connected to an inlet of the first snakelike heat exchange pipe, and the inner structure of the boiler body is simple.

Description

Technical Field

[0001] The utility model relates to boiler equipment, in particular to a hot water boiler body, belonging to the technical field of heat exchange equipment. Background Art

[0002] A hot water boiler is a common heat exchange equipment in production and life. Roughly classified according to the equipment form, hot water boilers are divided into horizontal hot water boilers and vertical hot water boilers. There are also various hot water boilers disclosed in Chinese patents. For example, a multi-fuel vertical hot water boiler disclosed in Chinese Patent Application No. 2023217528758, and a biomass pellet steam and hot water dual-purpose boiler disclosed in Chinese Patent Application No. 2021222920815. The horizontal hot water boiler can have a relatively large tonnage, but its internal structure is relatively complex, not conducive to maintenance, occupies a large area, has a large water capacity in the furnace, and starts relatively slowly. If frequent starts are required, the starting energy consumption is relatively high. The vertical hot water boiler has a relatively small volume, a relatively low tonnage, a relatively small water capacity, and starts relatively quickly. However, it also has the problems of relatively complex internal structure, not conducive to maintenance, relatively large internal water storage, and high energy consumption in the case of frequent starts. Summary of the Invention

[0003] The purpose of the utility model is to provide a hot water boiler body.

[0004] To achieve the purpose of the utility model, the following technical scheme is adopted: A hot water boiler body includes a horizontal heat exchange chamber. The front end of the horizontal heat exchange chamber has a burner interface. The horizontal heat exchange chamber is connected to a vertical heat exchange chamber at the back. The rear part of the horizontal heat exchange chamber coincides with the lower part of the vertical heat exchange chamber. N first serpentine heat exchange tubes are installed in the vertical heat exchange chamber. The N first serpentine heat exchange tubes are bent back and forth left and right from top to bottom. The lower ends of the N first serpentine heat exchange tubes are connected to a lower header. M second serpentine heat exchange tubes are also connected to the lower header. The M second serpentine heat exchange tubes are bent back and forth left and right from bottom to top. The M second serpentine heat exchange tubes extend to near the top of the horizontal heat exchange chamber. The outlets of the M second serpentine heat exchange tubes are connected to an intermediate header. A spiral heat exchange tube is connected to the intermediate header. The spiral heat exchange tube spirals forward in the horizontal heat exchange chamber. The outlet of the spiral heat exchange tube is connected to a water outlet pipe. The water inlet pipe of the boiler body is directly or indirectly connected to the inlet of the first serpentine heat exchange tube. Both N and M are integers greater than 1.

[0005] Furthermore, the upper part of the vertical heat exchange chamber has a forward extension. There is a neck between the upper and lower parts of the vertical heat exchange chamber. Below the neck is the overlapping part of the horizontal heat exchange chamber and the vertical heat exchange chamber. One side of the vertical heat exchange chamber is fixedly provided with a water inlet header. Multiple first-return heat exchange pipes in the left-right direction are connected to the water inlet header. The other ends of the multiple first-return heat exchange pipes in the left-right direction are connected to the upper header. The front part of the upper header is connected with multiple second-return heat exchange pipes in the left-right direction. The first-return heat exchange pipes and the second-return heat exchange pipes are at the same height. The multiple second-return heat exchange pipes pass through the vertical heat exchange chamber in the left-right direction, and after passing through a downward U-joint and making a 180-degree turn-back, they are connected to the same number of third-return heat exchange pipes. The third-return heat exchange pipes pass through the vertical heat exchange chamber and are then connected to the lower header. The inlets of N first serpentine heat exchange pipes are connected to the lower header. The smoke outlet is located on the top surface of the forward extension.

[0006] Furthermore, the spiral heat exchange pipe is a rectangular spiral pipe, and the outlet of the rectangular spiral pipe is located on the bottom edge of the spiral.

[0007] Furthermore, the first serpentine heat exchange pipe, the second serpentine heat exchange pipe, the spiral heat exchange pipe, the first-return heat exchange pipe, the second-return heat exchange pipe, and the third-return heat exchange pipe are all finned tubes.

[0008] Furthermore, there are 3 first-return heat exchange pipes, 3 second-return heat exchange pipes, and 3 first serpentine heat exchange pipes, and 2 second serpentine heat exchange pipes.

[0009] The positive and beneficial technical effects of the present utility model are as follows: The structure inside the furnace body of the present utility model is simple, the overall structure is compact, the volume is small, the heat exchange pipes adopt finned tubes, the heat exchange area is large, the thermal efficiency is high, and water flows inside the heat exchange pipes, the water capacity inside the furnace body is very small, the hot water output speed is fast, and it is energy-saving in occasions where frequent startup is required. This will be specifically described in detail in combination with the specific implementation manners. Brief Description of the Drawings

[0010] Figure 1 is one of the overall schematic diagrams of the present utility model.

[0011] Figure 2 is the second overall schematic diagram of the present utility model.

[0012] Figure 3 is one of the schematic diagrams of the heat exchange pipeline inside the furnace body.

[0013] Figure 4 is the second schematic diagram of the heat exchange pipeline inside the furnace body. Detailed Description of the Preferred Embodiments

[0014] To more fully explain the implementation of the present utility model, implementation examples of the present utility model are provided. These implementation examples are only for the elaboration of the present utility model and do not limit the scope of the present utility model.

[0015] The present invention is further explained in detail in conjunction with the accompanying drawings, in which the marks are: 1: bedroom heat exchange chamber; 2: vertical heat exchange chamber; 3: burner interface; 4: water outlet pipe; 5: water inlet header; 6: forward extension; 7: smoke outlet; 8: upper header; 9: lower header; 10: first serpentine heat exchange tube; 11: second serpentine heat exchange tube; 12: lower header; 13: middle header; 14: neck; 15: second return heat exchange tube; 16: third return heat exchange tube; 17: first return heat exchange tube; 18: spiral heat exchange tube.

[0016] As shown in the accompanying drawings, a hot water boiler furnace body includes a horizontal heat exchange chamber 1, a burner interface 3 is provided at the front end of the horizontal heat exchange chamber 1, a vertical heat exchange chamber 4 is connected to the rear of the horizontal heat exchange chamber, and the rear part of the horizontal heat exchange chamber overlaps with the lower part of the vertical heat exchange chamber. In this embodiment, the upper part of the vertical heat exchange chamber has a forward extending part 6, and a neck is provided between the upper and lower parts of the vertical heat exchange chamber, and the part below the neck is the overlapping part of the horizontal heat exchange chamber and the vertical heat exchange chamber.

[0017] A water inlet header 5 is fixedly provided on one side of the vertical heat exchange chamber 2, and three first return heat exchange tubes 17 in left and right directions are connected to the water inlet header 5. The other ends of the three first return heat exchange tubes 17 in left and right directions are connected to the upper header 8. The front part of the upper header 8 is connected to three second return heat exchange tubes 15 in left and right directions. The first return heat exchange tubes and the second return heat exchange tubes are located at the same height. The three second return heat exchange tubes 15 pass through the vertical heat exchange chamber in left and right directions, pass through the downward U-joint, turn back 180 degrees, and then connect to the same number of third return heat exchange tubes 16. The third return heat exchange tubes 16 pass through the vertical heat exchange chamber and are connected to the lower header 9. The inlets of the three first serpentine heat exchange tubes 10 are connected to the lower header 9, and the smoke outlet 7 is located on the top surface of the forward extension part 6.

[0018] The three first serpentine heat exchange tubes are bent back and forth from top to bottom, and the lower end outlets of the three first serpentine heat exchange tubes are connected to the lower header 12, and the lower header 12 is also connected to two second serpentine heat exchange tubes 11, and the two second serpentine heat exchange tubes are bent back and forth from bottom to top, and the two second serpentine heat exchange tubes extend to the top of the horizontal heat exchange chamber, and the outlets of the two second serpentine heat exchange tubes are connected to the middle header 13, and the middle header is connected to the spiral heat exchange tube 18, which is a rectangular spiral tube, and the spiral heat exchange tube 18 spirals forward in the bedroom heat exchange chamber, and the outlet of the spiral heat exchange tube is connected to the water outlet pipe 4, and the outlet of the rectangular spiral tube is located on the bottom of the spiral. The water inlet pipe of the furnace body is connected to the water inlet header.

[0019] The first serpentine heat exchange tube, the second serpentine heat exchange tube, the spiral heat exchange tube, the first return heat exchange tube, the second return heat exchange tube, and the third return heat exchange tube are all finned tubes.

[0020] The first serpentine heat exchange tube, the second serpentine heat exchange tube, the spiral heat exchange tube, the first return heat exchange tube, the second return heat exchange tube, and the third return heat exchange tube are arranged in multiple parallel branches. Compared with using a single serpentine tube, they can absorb the heat in the heat exchange chamber more evenly, and the water in the heat exchange tube will not overheat and vaporize to form a steam blockage. Using a rectangular spiral tube for heat exchange in a horizontal heat exchange chamber is beneficial for quickly heating the water and has a fast water outlet speed.

[0021] After the embodiments of the present invention are described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention all belong to the scope of the technical solution of the present invention, and the present invention is not limited to the implementation manners of the examples given in the specification either.

Claims

1. A hot water boiler body, comprising a horizontal heat exchange chamber. The front end of the horizontal heat exchange chamber has a burner interface. A vertical heat exchange chamber is connected behind the horizontal heat exchange chamber, and the rear part of the horizontal heat exchange chamber coincides with the lower part of the vertical heat exchange chamber. It is characterized in that: There are N first serpentine heat exchange tubes installed in the vertical heat exchange chamber. The N first serpentine heat exchange tubes are bent back and forth left and right from top to bottom. The lower outlets of the N first serpentine heat exchange tubes are connected to the lower header. There are also M second serpentine heat exchange tubes connected to the lower header. The M second serpentine heat exchange tubes are bent back and forth left and right from bottom to top and extend to near the top of the horizontal heat exchange chamber. The outlets of the M second serpentine heat exchange tubes are connected to the intermediate header. A spiral heat exchange tube is connected to the intermediate header. The spiral heat exchange tube spirals forward in the horizontal heat exchange chamber. An outlet pipe is connected to the outlet of the spiral heat exchange tube. The water inlet pipe of the furnace body is directly or indirectly connected to the inlet of the first serpentine heat exchange tube. Both N and M are integers greater than 1.

2. The hot water boiler body according to claim 1, characterized in that: The upper part of the vertical heat exchange chamber has a forward extension. There is a neck between the upper and lower parts of the vertical heat exchange chamber. Below the neck is the overlapping part of the horizontal heat exchange chamber and the vertical heat exchange chamber. An inlet water header is fixedly arranged on one side of the vertical heat exchange chamber. A plurality of first return heat exchange tubes in the left-right direction are connected to the inlet water header. The other ends of the plurality of first return heat exchange tubes in the left-right direction are connected to the upper header. The front part of the upper header is connected to a plurality of second return heat exchange tubes in the left-right direction. The first return heat exchange tubes and the second return heat exchange tubes are at the same height. The plurality of second return heat exchange tubes pass through the vertical heat exchange chamber in the left-right direction, then make a 180-degree turn after passing through a downward U-joint and are connected to the same number of third return heat exchange tubes. The third return heat exchange tubes pass through the vertical heat exchange chamber and are connected to the lower header. The inlets of the N first serpentine heat exchange tubes are connected to the lower header. The smoke outlet is located on the top surface of the forward extension.

3. A hot water boiler body according to claim 1, characterized in that: The spiral heat exchange tube is a rectangular spiral tube, and the outlet of the rectangular spiral tube is located on the bottom side of the spiral.

4. A hot water boiler body according to claim 2, characterized in that: The first serpentine heat exchange tube, the second serpentine heat exchange tube, the spiral heat exchange tube, the first return heat exchange tube, the second return heat exchange tube, and the third lower heat exchange tube are all finned tubes.

5. A hot water boiler body according to claim 1, characterized in that: There are 3 first return heat exchange tubes, 3 second return heat exchange tubes, and 3 first serpentine heat exchange tubes, and 2 second serpentine heat exchange tubes.

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