Heat exchange device for power of gas-fired boiler equipment

Abstract

The invention relates to the technical field of heat exchange equipment, and discloses a gas-fired boiler equipment power heat exchange device which comprises a heat exchange box, a heat exchange pipe is installed in the heat exchange box, a plurality of heat exchange fins are installed on the heat exchange pipe, and the heat exchange fins are connected through heat conduction fins; the cleaning block is slidably mounted on the heat exchange fins, and a cleaning brush is mounted on the surface, facing the heat exchange fins, of the cleaning block; the driving assembly is mounted in the heat exchange box; through the arrangement of the heat conduction fins, the temperature difference between the windward heat conduction fins and the leeward heat conduction fins can be reduced, and after the heat conduction fins are used for a period of time, the driving assembly drives the cleaning block to rotate, so that the cleaning block slides on the surfaces of the heat exchange fins to clean dirt attached to the surfaces of the heat exchange fins, and it is ensured that each heat exchange fin is in a clean state; the heat exchange fins can conduct heat sufficiently, so that it is guaranteed that the temperature of the heat exchange fins in all the areas is not uneven, and the heat exchange efficiency of the device is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and particularly relates to a heat exchange device for the power of a gas boiler device. Background Art

[0002] In a gas boiler device, fuel combustion generates high-temperature flue gas, and this flue gas transfers heat to a working medium, usually water or steam, through a heat exchanger. Currently, the heat exchange device is one of the core components of a gas boiler, and its design and optimization are directly related to the performance and efficiency of the entire system.

[0003] Existing heat exchange devices for the power of gas boiler devices usually include heat exchange tubes and heat exchange fin groups. The heat exchange fins are metal sheets attached to the surface of the heat exchange tubes, and their main function is to improve the heat exchange efficiency by expanding the heat transfer surface area. However, the temperatures at different positions on the heat exchange fins are not the same during actual use. Since the windward side directly contacts the air flow, and the air flow on the leeward side has undergone heat exchange for a period of time, there is a temperature difference between the leeward side and the windward side, and this temperature difference will cause uneven temperature distribution on the fin surface.

[0004] Currently, there are already some existing technologies that can reduce the temperature difference between different regions of the heat exchange fins. For example, the patent publication number is CN207163262U. Its main technical means is to stack multiple heat exchange fins on top of each other, and set flow blocking blocks, through holes, and flow dividing blocks on the heat exchange fins to extend the residence time of the air flow outside the heat exchange tubes, thereby increasing the heat exchange area. After analysis, the disadvantages of this technical solution are that after long-term use of the heat exchange fins, dirt will accumulate on their surfaces, and these dirt will affect the heat exchange performance of the heat exchange fins, resulting in uneven temperature distribution of the heat exchange fins at different positions again, thus affecting the heat exchange effect of the heat exchange device. Based on this, the present invention provides a heat exchange device for the power of a gas boiler device with a simple and ingenious structure, which can ensure that no dirt adheres to the surface of the heat exchange fins, causing uneven temperatures between the heat exchange fins at each position. Summary of the Invention

[0005] The purpose of the present invention is to provide a heat exchange device for the power of a gas boiler device in view of the deficiencies of the prior art, so as to solve the technical problem that dirt accumulates on the surface of the heat exchange fins, resulting in uneven temperatures between the heat exchange fins at each position.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A heat exchange device for the power of a gas boiler device, comprising: A heat exchange box, in which heat exchange tubes are installed, and a number of heat exchange fins are installed on the heat exchange tubes. The number of the heat exchange fins are connected by heat conduction fins. An intake pipe and an exhaust pipe are respectively connected to both sides of the heat exchange box; A cleaning block is slidably mounted on the heat exchange fins, and a cleaning brush is mounted on the surface thereof facing the heat exchange fins, and the cleaning brush is in contact with the surface of the heat exchange fins; and A driving assembly is mounted in the heat exchange box for driving the cleaning block to rotate reciprocally.

[0007] As a further solution of the present invention: the water inlet pipe of the heat exchange tube is disposed through the side of the heat exchange box connected to the air outlet pipe, and the water outlet pipe of the heat exchange tube is disposed through the side of the heat exchange box connected to the air inlet pipe.

[0008] As a further solution of the present invention: a plurality of inclined guide plates are mounted in the heat exchange box, and the distance between the end of the guide plate close to the air outlet pipe and the heat exchange tube is less than the distance between the end of the guide plate far from the air outlet pipe and the heat exchange tube.

[0009] As a further solution of the present invention: two wiping cloths are respectively arranged on both sides of the cleaning brush, and the wiping cloths are mounted on the cleaning block.

[0010] As a further solution of the present invention: two cleaning blocks are respectively arranged on each heat exchange fin, and the two cleaning blocks are symmetrically arranged.

[0011] As a further solution of the present invention: the driving assembly includes: A box body is fixed in the heat exchange box, and a runner is rotatably mounted therein. The runner is driven to rotate by a driving source mounted in the box body; A rack is slidably mounted in the box body. The rack is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to an eccentric position of the runner; A gear is rotatably mounted in the box body and meshes with the rack; and Connecting rods. A plurality of cleaning blocks on the same side of a plurality of heat exchange fins at the same height are connected by connecting rods. Two connecting rods on both sides of a plurality of heat exchange fins at the same height are both connected to a transmission wheel. A plurality of the transmission wheels are connected by a linkage, and one of the transmission wheels is coaxially fixedly connected to the gear.

[0012] As a further solution of the present invention: a plurality of through holes are disposed through the connecting rod.

[0013] As a further solution of the present invention: the driving assembly further includes an air guide pipe disposed through the box body, and an electromagnetic valve for controlling its opening and closing is arranged on the air guide pipe. A gas sensor is mounted in the box body, and the gas sensor is connected to the driving source and the electromagnetic valve.

[0014] As a further solution of the present invention: the box body is mounted on the side wall of the heat exchange box connected to the air inlet pipe.

[0015] The beneficial effects of the present invention: In the present invention, by providing heat-conducting fins, the temperature difference between the heat-conducting fins at the windward side and the leeward side can be reduced. After using for a period of time, the driving component drives the cleaning block to rotate, so that it slides on the surface of the heat-exchanging fins to clean the dirt attached to the surface of the heat-exchanging fins, ensuring that each heat-exchanging fin is in a clean state, enabling the heat-exchanging fins to conduct heat fully, thereby ensuring that there is no uneven temperature among the heat-exchanging fins in each area and effectively improving the heat exchange efficiency of the device. In the present invention, the flow direction of the flue gas is opposite to that of the water flow, so that the water flow entering the heat-exchanging tube will be heated by the flue gas for heat exchange to achieve preheating. When it flows to the intake pipe, the high-temperature flue gas just entering the heat exchange box heats it. Such a setting can make full use of the waste heat of the flue gas and avoid the heat loss during the flow after heat exchange caused by the same flow direction of the flue gas and the water flow. The layout of the guide plate can gather the flue gas that has not been discharged after heat exchange, increase the contact area between this part of the flue gas and the heat-exchanging tube and extend the contact time between them, further making full use of the waste heat of the flue gas to improve the heat exchange efficiency of the heat exchange device. In the present invention, after the heat exchange has been carried out for a period of time, if cleaning is required, the solenoid valve is controlled to open through an external controller. Then, part of the flue gas enters the box body through the guide pipe. When the flue gas sensor detects the flue gas, it sends a signal to the external controller. After calculating the flue gas flow rate, the external controller can control the rotation speed of the output end of the driving source, thereby controlling the rotation speed of the cleaning block, and can adaptively adjust the cleaning rate according to the flue gas flow rate, reducing the impact of the rotation of the cleaning block on the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the drawings.

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the heat-exchanging tube in the present invention; Figure 3 is in the present invention Figure 2 local enlarged structure schematic diagram of A place; Figure 4 is a schematic diagram of the structure of the driving component in the present invention; Figure 5 is a schematic diagram of the structure of the connecting rod in the present invention.

[0018] In the figure: 1. heat exchange box; 2. heat exchange tube; 3. water inlet pipe; 4. water outlet pipe; 5. air inlet pipe; 6. air outlet pipe; 7. heat exchange fins; 8. heat transfer fins; 9. cleaning block; 10. cleaning brush; 11. wiping cloth; 12. drive assembly; 1201. box body; 1202. rotating wheel; 1203. driving source; 1204. connecting rod; 1205. rack; 1206. gear; 1207. air guide pipe; 1208. solenoid valve; 1209. linkage; 1210. transmission wheel; 1211. connecting rod; 13. through hole; 14. guide plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0020] See also Figures 1 - 5 As shown, the present invention is a heat exchange device for power of a gas boiler equipment, comprising: A heat exchange box 1 is installed with a heat exchange tube 2, and a plurality of heat exchange fins 7 are installed on the heat exchange tube 2. The plurality of heat exchange fins 7 are connected by heat conducting fins 8. The two sides of the heat exchange box 1 are respectively connected with an air inlet pipe 5 and an air outlet pipe 6; A cleaning block 9 is slidably mounted on the heat exchange fin 7, and a cleaning brush 10 is mounted on the surface of the cleaning block 9 facing the heat exchange fin 7, and the cleaning brush 10 is in contact with the surface of the heat exchange fin 7; and The driving assembly 12 is installed in the heat exchange box 1 and is used to drive the cleaning block 9 to reciprocate.

[0021] In one case of this embodiment, the heat exchange tubes 2 are arranged vertically, and a plurality of heat-conducting fins 8 are provided on surfaces at different heights thereof, and adjacent heat-conducting fins 8 are connected through the heat-conducting fins 8 .

[0022] In actual application of this embodiment, water flows in the heat exchange tube 2, and the high-temperature flue gas is input into the heat exchange box 1 through the air inlet pipe 5. The high-temperature flue gas exchanges heat with the water in the heat exchange tube 2 and is discharged through the air outlet pipe 6. The setting of the heat-conducting fins 8 can reduce the temperature difference between the heat-conducting fins 8 on the windward side and the heat-conducting fins 8 on the leeward side. After a period of use, the driving component 12 drives the cleaning block 9 to rotate so that it slides on the surface of the heat exchange fin 7 to clean the dirt attached to the surface of the heat exchange fin 7, ensuring that each heat exchange fin 7 is in a clean state, so that the heat exchange fin 7 can fully conduct heat, thereby ensuring that there is no temperature unevenness between the heat exchange fins 7 in each area, and effectively improving the heat exchange efficiency of the device.

[0023] As shown in Figures 1 - 3 the figure, as a preferred embodiment of the present invention, the water inlet pipe 3 of the heat exchange tube 2 penetrates and is arranged on one side of the heat exchange box 1 connected to the air outlet pipe 6, and the water outlet pipe 4 of the heat exchange tube 2 penetrates and is arranged on one side of the heat exchange box 1 connected to the air inlet pipe 5.

[0024] In one case of this embodiment, a plurality of inclined guide plates 14 are installed in the heat exchange box 1, and the distance between the end of the guide plate 14 close to the air outlet pipe 6 and the heat exchange tube 2 is less than the distance between the end of the guide plate 14 far from the air outlet pipe 6 and the heat exchange tube 2.

[0025] When this embodiment is actually applied, taking Figure 1 the direction shown in the figure as an example, the flue gas flows from bottom to top, and the water flow flows from top to bottom, that is, the flow direction of the flue gas is opposite to the flow direction of the water flow. In this way, the water flow entering the heat exchange tube 2 will be heated by the flue gas for heat exchange, which is preheating. When it flows to the air inlet pipe 5, the high-temperature flue gas just entering the heat exchange box 1 heats it. Such a setting can make full use of the waste heat of the flue gas and avoid the heat loss during the flow after heat exchange caused by the same flow direction of the flue gas and the water flow; the arrangement of the guide plate 14 can gather the flue gas that has not been discharged after heat exchange, increase the contact area between this part of the flue gas and the heat exchange tube 2 and extend the contact time between the two, further make full use of the waste heat of the flue gas, and improve the heat exchange efficiency of the heat exchange device.

[0026] As shown in Figure 3 the figure, as a preferred embodiment of the present invention, two wiping cloths 11 are respectively arranged on both sides of the cleaning brush 10, and the wiping cloth 11 is installed on the cleaning block 9.

[0027] When this embodiment is actually applied, during the reciprocating rotation of the cleaning block 9, the area of the heat exchange fin 7 that comes into contact with the cleaning brush 10 then comes into contact with the wiping cloth 11, which can further clean the dirt under the cleaning brush and improve the cleaning efficiency of the surface of the heat exchange fin 7.

[0028] As shown in Figures 1 - 5 the figure, as a preferred embodiment of the present invention, two cleaning blocks 9 are respectively arranged on each heat exchange fin 7, and the two cleaning blocks 9 are symmetrically arranged.

[0029] In one case of this embodiment, the driving assembly 12 includes: a box body 1201, which is fixed in the heat exchange box 1, and a runner 1202 is rotatably installed therein. The runner 1202 is driven to rotate by a driving source 1203 installed in the box body 1201; a rack 1205, which is slidably installed in the box body 1201. The rack 1205 is rotatably connected to one end of a connecting rod 1204, and the other end of the connecting rod 1204 is rotatably connected to an eccentric position of the runner 1202; A gear 1206 is rotatably mounted within a housing 1201 and meshes with a rack 1205; and A connecting rod 1211, several cleaning blocks 9 on the same side of several heat exchange fins 7 at the same height are connected by the connecting rod 1211. Two connecting rods 1211 on both sides of several heat exchange fins 7 at the same height are both connected to a transmission wheel 1210. The several transmission wheels 1210 are connected by a linkage 1209, and one of the transmission wheels 1210 is fixedly connected coaxially with the gear 1206.

[0030] Among them, the driving source 1203 can be a motor assembly, or a gear assembly or a pulley assembly driven by a motor, as long as it can cause the runner 1202 to rotate. This embodiment does not make specific limitations here; a chute that slidably cooperates with the rack 1205 is provided on the housing 1201; the linkage 1209 can be several belts, and of course other structural components that can achieve linkage rotation can also be selected, which will not be elaborated here.

[0031] In actual application of this embodiment, the driving source 1203 drives the runner 1202 to rotate, driving the connecting rod 1204 to swing. Since the rack 1205 is guided by the chute on the housing 1201, the swinging of the connecting rod 1204 drives the rack 1205 to perform reciprocating translation, and then drives the gear 1206 to perform reciprocating rotation. Then the transmission wheel 1210 connected to the gear 1206 synchronously performs reciprocating rotation. Through the linkage 1209, other transmission wheels 1210 can be driven to synchronously perform reciprocating rotation, realizing the synchronous reciprocating rotation of several connecting rods 1211, so that several cleaning blocks 9 can slide on the surface of the heat exchange fins 7 to achieve cleaning.

[0032] As Figure 3 shown, as a preferred embodiment of the present invention, several through holes 13 are disposed through the connecting rod 1211; in actual application, the through holes 13 can allow the flue gas to flow through, and can avoid the problem of the heat exchange efficiency of the heat exchange device decreasing due to the reduction of the flue gas flow efficiency.

[0033] As Figures 1 - 5 shown, as a preferred embodiment of the present invention, the driving assembly 12 further includes a gas guide pipe 1207 disposed through the housing 1201, and a solenoid valve 1208 for controlling its opening and closing is provided on the gas guide pipe 1207. A gas sensor is installed in the housing 1201, and the gas sensor is connected to the driving source 1203 and is also connected to the solenoid valve 1208.

[0034] In one case of this embodiment, the housing 1201 is installed on the side wall of the heat exchange box 1 connected to the intake pipe 5, and the lowest transmission wheel 1210 is fixedly connected coaxially with the gear 1206.

[0035] Among them, the solenoid valve 1208, driving source 1203 and other electrical components are all connected to the external controller. The external controller is a prior art and is not improved in this application. Therefore, there is no need to disclose its specific mechanical structure and circuit structure, which does not affect the integrity of this application.

[0036] In actual application of this embodiment, when the heat exchange is carried out for a period of time and cleaning is required, the solenoid valve 1208 is controlled to open by an external controller, and part of the flue gas enters the box 1201 through the air duct 1207. The flue gas sensor detects the flue gas and sends a signal to the external controller. After measuring the flue gas flow rate, the external controller can control the rotation speed of the output end of the driving source 1203, thereby controlling the rotation speed of the cleaning block 9, and can realize adaptive adjustment of the cleaning rate according to the flue gas flow rate, thereby reducing the influence of the rotation of the cleaning block 9 on the heat exchange efficiency.

[0037] Working principle of the present invention: The above-mentioned embodiment of the present invention provides a heat exchange device for power of a gas boiler equipment, and the temperature difference between the heat-conducting fins 8 on the windward side and the heat-conducting fins 8 on the leeward side can be reduced by setting the heat-conducting fins 8, and after being used for a period of time, the driving component 12 drives the cleaning block 9 to rotate, so that it slides on the surface of the heat exchange fin 7 to clean the dirt attached to the surface of the heat exchange fin 7, ensuring that each heat exchange fin 7 is in a clean state, so that the heat exchange fin 7 can fully conduct heat, thereby ensuring that there is no uneven temperature between the heat exchange fins 7 in each area, and effectively improving the heat exchange efficiency of the device.

[0038] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A heat exchange device for power of gas boiler equipment, characterized in that: include: A heat exchange box (1) having a heat exchange tube (2) installed therein, and a plurality of heat exchange fins (7) installed on the heat exchange tube (2), wherein the plurality of heat exchange fins (7) are connected via heat conducting fins (8), and an air inlet pipe (5) and an air outlet pipe (6) are respectively connected to two sides of the heat exchange box (1); A cleaning block (9) is slidably mounted on the heat exchange fin (7), and a cleaning brush (10) is mounted on the surface of the cleaning block facing the heat exchange fin (7), wherein the cleaning brush (10) is in contact with the surface of the heat exchange fin (7); and A driving assembly (12) is installed in the heat exchange box (1) and is used to drive the cleaning block (9) to rotate reciprocatingly.

2. A heat exchange device for gas boiler equipment power according to claim 1, characterized in that: The water inlet pipe (3) of the heat exchange tube (2) is arranged through the side of the heat exchange box (1) connected to the air outlet pipe (6), and the water outlet pipe (4) of the heat exchange tube (2) is arranged through the side of the heat exchange box (1) connected to the air inlet pipe (5).

3. A heat exchange device for gas boiler power according to claim 1, characterized in that: A plurality of obliquely arranged guide plates (14) are installed in the heat exchange box (1), and the distance between the end of the guide plate (14) close to the air outlet pipe (6) and the heat exchange pipe (2) is smaller than the distance between the end of the guide plate (14) far from the air outlet pipe (6) and the heat exchange pipe (2).

4. A heat exchange device for gas boiler equipment power according to claim 1, characterized in that: Two wiping cloths (11) are respectively arranged on both sides of the cleaning brush (10), and the wiping cloths (11) are mounted on the cleaning block (9).

5. The heat exchange device for gas boiler power according to claim 1, characterized in that: Two cleaning blocks (9) are respectively arranged on each of the heat exchange fins (7), and the two cleaning blocks (9) are symmetrically arranged.

6. A heat exchange device for gas boiler power according to claim 5, characterized in that: The driving assembly (12) comprises: A box body (1201) is fixed in the heat exchange box (1), and a rotating wheel (1202) is rotatably installed in the box body, wherein the rotating wheel (1202) is driven to rotate by a driving source (1203) installed in the box body (1201); A rack (1205) is slidably mounted in the box (1201), wherein the rack (1205) is rotationally connected to one end of the connecting rod (1204), and the other end of the connecting rod (1204) is rotationally connected to the eccentric position of the rotating wheel (1202); A gear (1206) is rotatably mounted in the housing (1201) and meshes with the rack (1205); and A connecting rod (1211), wherein the cleaning blocks (9) on the same side of the heat exchange fins (7) at the same height are connected via the connecting rod (1211), the two connecting rods (1211) on both sides of the heat exchange fins (7) at the same height are both connected to a transmission wheel (1210), the transmission wheels (1210) are connected via a linkage (1209), and one of the transmission wheels (1210) is coaxially fixedly connected to the gear (1206).

7. A heat exchange device for gas boiler power according to claim 6, characterized in that: The connecting rod (1211) is provided with a plurality of through holes (13).

8. The heat exchange device for gas boiler power according to claim 6, characterized in that: The driving assembly (12) further comprises an air duct (1207) arranged through the box (1201), and the air duct (1207) is provided with an electromagnetic valve (1208) for controlling its opening and closing. A gas sensor is installed in the box (1201), and the gas sensor is connected to the driving source (1203) and to the electromagnetic valve (1208).

9. A heat exchange device for gas boiler power according to claim 7, characterized in that: The box body (1201) is installed on the side wall of the heat exchange box (1) connected to the air inlet pipe (5).

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