A boiler energy saver and a boiler

Abstract

This utility model discloses a boiler energy saver and a boiler. The boiler energy saver includes a housing with five vertical partitions fixed inside. Multiple evenly distributed, serpentine heat exchange tubes are arranged inside the housing. Multiple evenly distributed fins are fixed to the outside of each heat exchange tube. Water inlet and outlet pipes are respectively arranged on the left and right sides of the housing exterior. Each heat exchange tube passes through the housing at both ends and connects to the water inlet and outlet pipes respectively. A removable filter frame is installed inside the housing between the flue gas inlet and the heat exchange tubes. A funnel is fixed to the bottom of the ash discharge port of the housing, and an air hammer is installed on the top of the housing. This boiler energy saver divides the inner cavity of the housing into a serpentine channel by setting five staggered vertical partitions, increasing the residence time of flue gas inside the housing, allowing for sufficient heat exchange between the flue gas and the heat exchange tubes, and improving the utilization rate of waste heat from the flue gas. Simultaneously, by directly installing a filter frame between the flue gas inlet and the heat exchange tubes, dust and other impurities in the flue gas can be filtered.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, specifically to a boiler energy saver and a boiler. Background Technology

[0002] In the operation of traditional boilers, waste heat recovery from flue gas has always been a key aspect of improving energy efficiency. However, existing technologies have many shortcomings. Conventional boiler exhaust systems mostly adopt direct emission methods, resulting in a large amount of waste heat carried by high-temperature flue gas being lost to the environment without effective utilization. This not only wastes energy but also exacerbates thermal pollution. Some improvement solutions connect boiler economizers to the boiler exhaust outlet. However, most existing boiler economizers use a through-flow straight flue gas channel, and the flue gas stays in the economizer's casing for a short time, failing to fully exchange heat with the internal heat exchange tubes. Therefore, the utilization rate of waste heat from the flue gas is low. In addition, existing boiler economizers lack effective flue gas filtration functions. Dust particles in the flue gas directly adhere to the surface of the internal heat exchange tubes, forming an insulation layer over time. This not only reduces heat exchange efficiency but also increases the frequency of equipment cleaning and maintenance and operating costs. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of the existing technology by providing a boiler energy saver and a boiler to solve the problems mentioned in the background art.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] On one hand, a boiler energy saver is provided, including a housing with a flue gas inlet and a flue gas outlet at the front and rear, respectively. Five vertical partitions are fixed inside the housing, and the five vertical partitions are staggered to divide the inner cavity of the housing into a serpentine channel. Multiple evenly distributed serpentine heat exchange tubes are arranged inside the housing, each heat exchange tube passing through and fixed to the five vertical partitions. Multiple evenly distributed fins are fixed outside each heat exchange tube. Water inlet pipes and water outlet pipes are arranged on the left and right sides of the housing, respectively. Both ends of each heat exchange tube pass through the housing and are connected to the water inlet pipe and the water outlet pipe, respectively. A detachable filter frame is arranged inside the housing between the flue gas inlet and the heat exchange tubes. An ash discharge port is opened at the bottom of the housing in front of the filter frame, and a funnel is fixed at the bottom of the ash discharge port. An air hammer is installed on the top of the housing.

[0006] As a preferred embodiment of the boiler energy saver, the side of the housing has a rectangular opening, and slots are provided at the top and bottom of the housing corresponding to the rectangular opening. The filter frame is inserted into the housing through the slots. Four threaded posts arranged in a rectangular array are fixed around the outside of the rectangular opening. The outside of the rectangular opening is covered with a cover plate with four through holes. The four threaded posts pass through the four through holes and are connected to nuts.

[0007] As a preferred embodiment of a boiler energy saver, the filter frame consists of a rectangular frame and a filter screen, with the filter screen fixed inside the rectangular frame.

[0008] As a preferred solution for boiler energy saving devices, the water inlet pipe is provided with a water inlet, which is connected to a water source through an external water pump.

[0009] As a preferred embodiment of a boiler economizer, the outlet of the funnel is equipped with an electric gate.

[0010] On the other hand, a boiler is provided, including the above-mentioned boiler economizer, and also including a boiler body, wherein the flue gas outlet of the boiler body is connected to the flue gas inlet of the housing through a pipe.

[0011] As a preferred embodiment of the boiler, the water outlet pipe is provided with a water outlet, which is connected to the water inlet of the boiler body through a pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The boiler energy saver of this utility model divides the inner cavity of the box into a serpentine channel by setting five staggered vertical partitions, which increases the residence time of flue gas in the box, so that the flue gas and the heat exchange tube can fully exchange heat, and improve the utilization rate of flue gas waste heat. In addition, the multiple evenly distributed fins fixed on the outside of the heat exchange tube can further increase the heat exchange area and enhance the heat exchange effect.

[0014] (2) The boiler energy saver of this utility model can filter dust and other impurities in the flue gas by directly setting a filter frame between the flue gas inlet and the heat exchange tube in the box, so as to avoid dust adhering to the heat exchange tube and fins and affecting the heat exchange effect. At the same time, the detachable design of the filter frame can facilitate workers to clean or replace the filter frame later. In addition, the design of the air hammer and funnel can realize automatic dust removal of the filter frame, reducing the workload of manual cleaning. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the boiler energy saver and boiler described in this utility model.

[0017] Figure 2 This is a schematic diagram of the top cross-sectional structure of the box body described in this utility model.

[0018] Figure 3 This is a front sectional view of the box body described in this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the heat exchange tube described in this utility model.

[0020] Figure 5 This is a schematic diagram of the installation structure of the filter frame described in this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Housing; 101. Flue gas inlet; 102. Flue gas outlet; 103. Ash discharge outlet; 104. Rectangular opening; 2. Vertical partition; 3. Heat exchange tube; 4. Fins; 5. Water inlet pipe; 501. Water inlet; 6. Water outlet pipe; 601. Water outlet; 7. Filter frame; 8. Funnel; 9. Air hammer; 10. Slot; 11. Threaded post; 12. Cover plate; 13. Nut; 14. Boiler body. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1:

[0028] like Figures 1 to 5 As shown, this embodiment provides a boiler economizer. The boiler economizer housing 1 is made of stainless steel to ensure its structural strength and corrosion resistance. The housing 1 has a flue gas inlet 101 and a flue gas outlet 102 at the front and rear, respectively. Five vertical partitions 2 are fixed inside the housing 1. The five vertical partitions 2 are staggered and divide the inner cavity of the housing 1 into a serpentine channel. Multiple evenly distributed and serpentine heat exchange tubes 3 are arranged inside the housing 1. Each heat exchange tube 3 passes through and is fixed on the five vertical partitions 2. The heat exchange tubes 3 are made of copper to improve heat exchange efficiency. Multiple evenly distributed aluminum fins 4 are fixed on the outside of each heat exchange tube 3 to increase the heat exchange area and further enhance the heat exchange effect. The design of the five vertical partitions 2 can increase the residence time of flue gas in the housing 1 to ensure that the flue gas and the heat exchange tubes 3 can fully exchange heat and improve the utilization rate of flue gas waste heat.

[0029] Water inlet pipe 5 and water outlet pipe 6 are respectively installed on the left and right sides of the outer casing 1. Water inlet 501 is installed on water inlet pipe 5. Water inlet 501 is connected to water source through external water pump. Both ends of each heat exchange tube 3 pass through casing 1 and are connected to water inlet pipe 5 and water outlet pipe 6 respectively, forming a complete waste heat circuit system. After the external water pump is started, water from the water source can be pumped into water inlet pipe 5, then through heat exchange tube 3, and finally discharged from water outlet pipe 6. During this period, the flue gas of the boiler can preheat the water passing through heat exchange tube 3, thereby recovering the waste heat in the flue gas and significantly improving the thermal efficiency of the boiler, so as to achieve the effect of energy saving and emission reduction.

[0030] A filter frame 7 is installed inside the housing 1, between the flue gas inlet 101 and the heat exchange tube 3. The filter frame 7 consists of a rectangular frame and a filter screen. The filter screen is fixed inside the rectangular frame and is used to filter dust and other impurities in the flue gas, preventing dust in the flue gas from adhering to the heat exchange tube 3 and fins 4. Specifically, a rectangular opening 104 is opened on the side of the housing 1. Slots 10 are set at the top and bottom of the housing 1 corresponding to the rectangular opening 104. The filter frame 7 is inserted into the housing 1 through the slots 10. Four threaded posts 11 are fixed around the outside of the rectangular opening 104 in a rectangular array. The rectangular opening 104 is covered by a cover plate 12 with four through holes. The four threaded posts 11 pass through the four through holes and are connected to nuts 13. The cover plate 12 can be fixed by tightening the nuts 13 to prevent the filter frame 7 from falling out. The cover plate 12 can be removed by unscrewing the nuts 13 so that the operator can take out the filter frame 7 for cleaning or replacement.

[0031] A dust discharge port 103 is opened at the bottom of the housing 1 and in front of the filter frame 7. A funnel 8 is fixed at the bottom of the dust discharge port 103. An electric gate is installed at the outlet of the funnel 8 to control the discharge of dust. An air hammer 9 is installed on the top of the housing 1. The air hammer 9 is connected to an external pneumatic system. The air hammer 9 can work at regular intervals and cause the dust attached to the filter frame 7 to fall into the dust discharge port 103 through vibration.

[0032] Example 2:

[0033] like Figure 1 As shown, based on Embodiment 1, this embodiment provides a boiler, which includes a boiler body 14. The flue gas outlet of the boiler body 14 is connected to the flue gas inlet 101 of the box 1 through a pipe, so that the flue gas generated by the boiler can enter the energy-saving device to recover waste heat. A water outlet 601 is provided on the water outlet pipe 6, and the water outlet 601 is connected to the water inlet of the boiler body 14 through a pipe, so that the preheated water is introduced into the boiler body 14 for use, thereby achieving the purpose of energy saving.

[0034] Working principle and usage process of this utility model:

[0035] When using the boiler economizer and boiler, first install the boiler body 14 and complete all debugging preparations. Then, connect the inlet 501 of the economizer to the water source through an external water pump, turn on the water pump and the burner of the boiler body 14, and let the water enter each heat exchange tube 3 through the inlet pipe 5, and then enter the boiler body 14 through the outlet pipe 6. The boiler body 14 heats the water to form the required steam or hot water. The flue gas generated during the operation of the boiler body 14 enters the flue gas inlet 101 of the box 1 through its exhaust port. The flue gas flows in the serpentine channel formed by the five vertical baffles 2, and exchanges heat with the heat exchange tubes 3 and their external fins 4, transferring heat to the water in the heat exchange tubes 3, raising the water temperature, thereby preheating the water entering the boiler body 14. After heat exchange, the flue gas is discharged from the exhaust port 102, which is connected to the exhaust gas treatment equipment. Finally, the flue gas is treated to meet the standards and then discharged to the outside.

[0036] During flue gas flow, the filter frame 7 filters dust and other impurities in the flue gas to prevent them from adhering to the heat exchange tube 3 and fins 4 and affecting the heat exchange effect. As the operating time increases, a lot of dust will accumulate on the filter frame 7. At this time, the air hammer 9 can be started. The vibration of the air hammer 9 causes the dust on the filter frame 7 to fall to the ash discharge port 103 and then be collected through the funnel 8. When it is necessary to clean the dust, open the electric gate at the outlet of the funnel 8 to discharge the dust. If it is necessary to thoroughly clean or replace the filter frame 7, the nut 13 on the cover plate 12 can be unscrewed, the cover plate 12 can be removed, and the filter frame 7 can be pulled out from the rectangular opening 104 and slot 10 for cleaning or replacement. After that, the filter frame 7 can be installed back in its original position and the cover plate 12 can be fixed.

[0037] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. A boiler economizer characterized by, The enclosure includes a housing (1), with a smoke inlet (101) and a smoke outlet (102) at the front and rear, respectively. Five vertical partitions (2) are fixed inside the housing (1), staggered to divide the interior of the housing (1) into a serpentine channel. Multiple evenly distributed, serpentine heat exchange tubes (3) are arranged inside the housing (1), each heat exchange tube (3) penetrating and fixed to the five vertical partitions (2). Multiple evenly distributed fins (4) are fixed to the outside of each heat exchange tube (3). Water inlet pipe (5) and water outlet pipe (6) are respectively provided on the left and right sides of the exterior. Each heat exchange tube (3) passes through the box body (1) at both ends and is connected to the water inlet pipe (5) and water outlet pipe (6) respectively. A detachable filter frame (7) is provided inside the box body (1) between its flue gas inlet (101) and the heat exchange tube (3). A ash discharge port (103) is opened at the bottom of the box body (1) in front of the filter frame (7). A funnel (8) is fixed at the bottom of the ash discharge port (103). An air hammer (9) is installed on the top of the box body (1).

2. The boiler economizer of claim 1, wherein, The side of the box (1) has a rectangular opening (104). The top and bottom of the box (1) are provided with slots (10) corresponding to the rectangular opening (104). The filter frame (7) is inserted into the box (1) through the slots (10). Four threaded posts (11) arranged in a rectangular array are fixed around the outside of the rectangular opening (104). The rectangular opening (104) is covered with a cover plate (12). The cover plate (12) has four through holes. The four threaded posts (11) pass through the four through holes and are connected with nuts (13).

3. The boiler economizer of claim 1, wherein, The filter frame (7) consists of a rectangular frame and a filter screen, with the filter screen fixed inside the rectangular frame.

4. The boiler economizer of claim 1, wherein, The water inlet pipe (5) is provided with a water inlet (501), and the water inlet (501) is connected to the water source through an external water pump.

5. The boiler energy saver according to claim 1, characterized in that, An electric gate is installed at the outlet of the funnel (8).

6. A boiler comprising the boiler economizer of any one of claims 1 to 5, characterized in that, It also includes a boiler body (14), the exhaust port of which is connected to the exhaust port (101) of the box (1) via a pipe.

7. A boiler according to claim 6, characterised in that The water outlet pipe (6) is provided with a water outlet (601), and the water outlet (601) is connected to the water inlet of the boiler body (14) through a pipe.

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