Full-premixing condensation type heat exchanger capable of efficiently exchanging heat

Abstract

The invention belongs to the technical field of heaters, and particularly relates to an efficient heat exchange full-premixing condensation type heat exchanger which comprises a shell, a cold water opening and a hot water opening are formed in the two ends of one side of the shell correspondingly, and one side of the cold water opening and one side of the hot water opening are connected with a cold water pipe and a hot water pipe through flanges correspondingly; a through opening is formed in one side of the shell, an inner tank is connected to the inner wall of the through opening through bolts, a connecting opening is formed in one side of the inner tank in a penetrating mode, an ignition needle is connected to the inner wall of the connecting opening through bolts, and air inlets are formed in the two ends of one side of the inner tank in a penetrating mode. And the inner walls of the two air inlets are connected with a gas pipe and an air pipe through flanges correspondingly, and condensation mechanisms are arranged on the two sides of the shell correspondingly. According to the heat exchanger, the heating effect of the heat conducting fins on cold water is improved conveniently, and the situation that the heat exchange effect of the heat exchanger is poor due to the fact that the heat conducting fins cannot effectively heat the cold water due to the fact that the flow speed of water flow is high in the heating process of the cold water is prevented.

Description

Technical Field

[0001] The present invention relates to the field of heaters, and particularly to a fully premixed condensing heat exchanger with efficient heat exchange. Background Art

[0002] The fully premixed condensing heat exchanger adopts an integrated design, no longer differentiating between the main heat exchanger and the condensing heat exchanger. The entire heat exchange process is completed by one heat exchanger, and the flue gas can be condensed at any position in the heat exchanger to generate condensed water. The condensing wall-hung boiler works for more than ten hours every day during the heating season, showing obvious advantages in the heating industry.

[0003] After retrieval, a Chinese patent application with the publication number CN218846456U discloses a fully premixed condensing heat exchanger with efficient heat exchange, including a housing. A combustion chamber, a heat exchange chamber, and a condensing smoke exhaust chamber are installed in sequence and communicated inside the housing. The housing is provided with a water inlet, a water outlet, and an air inlet pipe. The water inlet and the water outlet are respectively communicated with the heat exchange chamber, and the air inlet pipe is communicated with the combustion chamber. The heat exchange chamber includes heat exchange coils and heat conducting fins. The heat exchange coils are spirally wound around the outer wall of the heat conducting fins. A plurality of heat conducting channels are longitudinally arranged inside the heat conducting fins to conduct the heat flow along the heat conducting channels to the entire heat conducting fins. A plurality of dispersion channels are horizontally arranged at the lower part of the heat conducting fins to enable the heat flow transmitted on the heat conducting channels to uniformly flow horizontally along the dispersion channels. A plurality of flow guiding fins are arranged inside the dispersion channels, increasing the heat exchange area, spreading the heat flow to the surroundings, and then slowing down the flow speed of the heat flow inside the heat conducting fins, enabling the heat conducting fins to absorb heat more fully.

[0004] When the existing heat exchanger conducts heat exchange, water is usually conveyed through a cold water pipe to the inside of the heat exchanger, and the cold water is heated by a burner. The heated hot water is then discharged through a hot water pipe. However, during the heating process of the cold water, due to the relatively fast flow rate of the water flow, the burner cannot effectively heat the cold water, resulting in poor heat exchange effect of the heat exchanger. Summary of the Invention

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An all-premixed condensing heat exchanger with efficient heat transfer, comprising a housing. At both ends of one side of the housing, a cold water inlet and a hot water inlet are respectively provided. On one side of the cold water inlet and the hot water inlet, a cold water pipe and a hot water pipe are respectively connected by flanges. A through opening is provided on one side of the housing, and an inner tank is connected to the inner wall of the through opening by bolts. A connection port is penetrated through one side of the inner tank, and an ignition needle is connected to the inner wall of the connection port by bolts. At both ends of one side of the inner tank, air inlets are penetrated through, and on the inner walls of the two air inlets, a gas pipe and an air pipe are respectively connected by flanges. Condensing mechanisms are provided on both sides of the housing. Exhaust ports are penetrated through one side of the housing and one side of the inner tank, and an exhaust pipe is provided between the two exhaust ports. A plurality of heat conduction ports are penetrated through the outer walls on both sides of the inner tank, and heat conduction sheets are connected to the inner walls of the heat conduction ports by bolts. First stirring mechanisms are provided on both sides of the inner wall of the housing, and a transmission component is provided between the two first stirring mechanisms.

[0006] Preferably, the first stirring mechanism includes a support plate, a rotating rod, a plurality of sleeves and a plurality of blades. One side of the support plate is welded to the inner wall of one side of the housing. One end of the rotating rod is rotatably connected to the support plate through a bearing. A plurality of sleeves are fixedly sleeved on the outer wall of the rotating rod at equal intervals. A plurality of blades are fixedly arranged on the outer walls of the sleeves at equal intervals. The blades are made of magnetic material, and the blades on adjacent two sleeves are staggered. One end of one of the rotating rods is connected with an impeller by bolts, and the impeller is located on one side of the cold water pipe.

[0007] Preferably, a buffer pad is arranged between adjacent two heat conduction sheets. One side of the buffer pad is bonded to the outer wall of the inner tank, and a magnet is bonded to the other side of the buffer pad. The magnet and the blade repel each other. The buffer pad is made of hollow elastic material. Spray holes are penetrated through both outer walls of the buffer pad, and spray pipes are arranged on the inner walls of the spray holes. One end of the spray pipe is inclined.

[0008] Preferably, the transmission component is composed of two belt pulleys and a belt. A rotating connection is formed between the two belt pulleys and the belt. One end of each of the two rotating rods is welded with a shaft rod, and the two belt pulleys are fixedly sleeved on the outer walls of the shaft rods. A plurality of tooth grooves are arranged on the inner wall of the belt.

[0009] Preferably, the condensing mechanism includes two brackets, a condenser, a liquid inlet pipe and a drain pipe. The two brackets are connected to one side of the housing by bolts, and the two brackets are fixedly connected to the condenser. A liquid inlet is provided on one side of the housing, and both ends of the liquid inlet pipe are connected to the liquid inlet and the condenser by flanges. One end of the condenser is connected to the drain pipe by a flange.

[0010] Preferably, a second stirring mechanism is arranged on one side of the inner wall of the housing, and the second stirring mechanism cooperates with the first stirring mechanism.

[0011] Preferably, the second stirring mechanism is composed of a gear, a support seat, a rotating shaft, a connecting sleeve and a plurality of stirring blades. Both ends of the support seat are welded between the opposite inner walls of the housing. One side of the support seat is rotatably connected to the rotating shaft through a bearing. The gear is fixedly sleeved on the outer wall of the rotating shaft. The gear meshes with the tooth groove. The connecting sleeve is fixedly sleeved on the outer wall of the rotating shaft. The stirring blades are fixedly arranged on the outer wall of the connecting sleeve at equal intervals.

[0012] Preferably, the stirring blades are inclined on the outer wall of the connecting sleeve.

[0013] The beneficial effects of the present invention are as follows: In the present invention, through the arranged first stirring mechanism, when heat exchange treatment is carried out, cold water is conveyed into the housing through a cold water pipe, gas is conveyed into the inner tank through a gas pipe, and air will enter the inner tank through an air pipe. At this time, the ignition needle is started, and the ignition needle will burn the gas. The heat is transferred through the heat conducting sheet, so as to facilitate the heating treatment of cold water. During this period, when the cold water enters the housing through the cold water pipe, the impeller will drive the rotating rod to rotate under the impact of the cold water. At this time, the sleeve will drive the blade to rotate synchronously, so that the cold water can be stirred through the rotation of the blade, thereby improving the contact effect between the cold water and the heat conducting sheet. Since the blade is made of magnetic material and the blade and the magnet repel each other, when the blade rotates, the distance between the blade and the magnet will gradually approach. At this time, the magnet will squeeze the buffer pad under the action of the repulsive force. The gas inside the buffer pad will be ejected through the nozzle after being squeezed, so as to reduce the flow rate of the cold water through the ejected air flow, thereby facilitating the improvement of the heating effect of the heat conducting sheet on the cold water and preventing the heat conducting sheet from being unable to effectively heat the cold water due to the fast flow rate of the water flow during the heating process of the cold water, resulting in poor heat exchange effect of the heat exchanger; In the present invention, through the arranged first stirring mechanism and second stirring mechanism, when the cold water is stirred by the first stirring mechanism, another first stirring mechanism stirs the water through the transmission component, so as to improve the heat exchange effect of the heat exchanger. When the transmission component rotates under the action of the first stirring mechanism, the gear drives the rotating shaft to rotate through meshing. At this time, the stirring blades will rotate synchronously with the rotation of the rotating shaft, so as to stir the cold water through the stirring blades, thereby improving the heat exchange effect of the heat exchanger. At this time, when the stirring blades rotate, the stirring blades will drive the cold water to flow back, so as to slow down the flow rate of the cold water, facilitating the heating treatment of the cold water by the heat conducting sheet, and further improving the heat exchange effect of the heat exchanger. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a fully premixed condensing heat exchanger with high efficiency heat exchange proposed by the present invention; Figure 2 Schematic cross-sectional structure view of a fully premixed condensing heat exchanger with high-efficiency heat exchange proposed by the present invention; Figure 3 Schematic partial structure view of a fully premixed condensing heat exchanger with high-efficiency heat exchange proposed by the present invention; Figure 4 Schematic structure view of the first stirring mechanism and the second stirring mechanism of a fully premixed condensing heat exchanger with high-efficiency heat exchange proposed by the present invention; Figure 5 For Figure 4 Schematic structure view of the structure at position A proposed in Figure 6 Schematic structure view of the transmission assembly and the second stirring mechanism of a fully premixed condensing heat exchanger with high-efficiency heat exchange proposed by the present invention; Figure 7 Schematic structure view of the second stirring mechanism of a fully premixed condensing heat exchanger with high-efficiency heat exchange proposed by the present invention.

[0015] In the drawings: 1, housing; 2, condenser; 3, bracket; 4, liquid inlet pipe; 5, exhaust pipe; 6, through port; 7, drain pipe; 8, hot water pipe; 9, inner tank; 10, air pipe; 11, ignition needle; 12, gas pipe; 13, cold water pipe; 14, heat conduction fin; 15, first stirring mechanism; 16, second stirring mechanism; 17, support plate; 18, rotating rod; 19, impeller; 20, sleeve; 21, blade; 22, buffer pad; 23, magnet; 24, nozzle; 25, shaft rod; 26, pulley; 27, belt; 28, support seat; 29, rotating shaft; 30, gear; 31, connecting sleeve; 32, stirring blade. Detailed implementation manners

[0016] Example 1, referring to Figures 1 - 5, A fully premixed condensing heat exchanger with high-efficiency heat transfer, comprising a housing 1. At both ends of one side of the housing 1, a cold water inlet and a hot water inlet are respectively provided. And on one side of the cold water inlet and the hot water inlet, a cold water pipe 13 and a hot water pipe 8 are respectively connected by flanges. A through port 6 is provided on one side of the housing 1, and an inner tank 9 is connected to the inner wall of the through port 6 by bolts. A connection port is penetrated through one side of the inner tank 9, and an ignition needle 11 is connected to the inner wall of the connection port by bolts. Intake ports are penetrated through both ends of one side of the inner tank 9, and a gas pipe 12 and an air pipe 10 are respectively connected to the inner walls of the two intake ports by flanges. Condensing mechanisms are provided on both sides of the housing 1. Exhaust ports are penetrated through one side of the housing 1 and one side of the inner tank 9, and an exhaust pipe 5 is provided between the two exhaust ports. A plurality of heat conduction ports are penetrated through the outer walls on both sides of the inner tank 9, and heat conduction fins 14 are connected to the inner walls of the heat conduction ports by bolts. First stirring mechanisms 15 are provided on both sides of the inner wall of the housing 1, and a transmission assembly is provided between the two first stirring mechanisms 15, which is convenient for improving the heating effect of the heat conduction fins 14 on the cold water, preventing the heat conduction fins 14 from being unable to effectively heat the cold water due to the relatively fast flow rate of the water flow during the heating process of the cold water, thereby resulting in a poor heat exchange effect of the heat exchanger. When the cold water is stirred by the first stirring mechanism 15, the other first stirring mechanism 15 stirs the water through the transmission assembly, thereby improving the heat exchange effect of the heat exchanger.

[0017] On the basis of the above, the first stirring mechanism 15 includes a support plate 17, a rotating rod 18, a plurality of sleeves 20 and a plurality of blades 21. And one side of the support plate 17 is welded to the inner wall of one side of the housing 1. One end of the rotating rod 18 is rotatably connected to the support plate 17 through a bearing. The plurality of sleeves 20 are fixedly sleeved on the outer wall of the rotating rod 18 at equal intervals. The plurality of blades 21 are fixedly arranged on the outer wall of the sleeve 20 at equal intervals. The blade 21 is made of a magnetic material, and the blades 21 on adjacent two sleeves 20 are staggered. One end of one of the rotating rods 18 is connected with an impeller 19 by bolts, and the impeller 19 is located on one side of the cold water pipe 13.

[0018] On the basis of the above, a buffer pad 22 is arranged between two adjacent heat conducting fins 14. One side of the buffer pad 22 is adhesively connected to the outer wall of the inner tank 9, and a magnet 23 is adhesively connected to the other side of the buffer pad 22. The magnet 23 and the blade 21 repel each other. The buffer pad 22 is made of a hollow elastic material. Spray holes are formed through the outer walls on both sides of the buffer pad 22, and a spray pipe 24 is arranged on the inner wall of the spray hole. One end of the spray pipe 24 is inclined. When the blade 21 rotates, the distance between the blade 21 and the magnet 23 will gradually approach. At this time, the magnet 23 will extrude the buffer pad 22 under the action of the repulsive force. The gas inside the buffer pad 22 will be ejected through the spray pipe 24 after being extruded, so as to reduce the flow rate of the cold water through the ejected air flow, thereby facilitating the improvement of the heating effect of the heat conducting fin 14 on the cold water, preventing the heat conducting fin 14 from being unable to effectively heat the cold water due to the fast flow rate of the water flow during the heating process, resulting in poor heat exchange effect of the heat exchanger. When the cold water is stirred by the first stirring mechanism 15, another first stirring mechanism 15 stirs the water through the transmission component, thereby improving the heat exchange effect of the heat exchanger.

[0019] On the basis of the above, the transmission component is composed of two belt pulleys 26 and a belt 27, and a rotational connection is formed between the two belt pulleys 26 and the belt 27. Shaft rods 25 are welded to one ends of the two rotating rods 18, and the two belt pulleys 26 are fixedly sleeved on the outer walls of the shaft rods 25. Multiple tooth grooves are formed on the inner wall of the belt 27.

[0020] On the basis of the above, the condensation mechanism includes two brackets 3, a condenser 2, a liquid inlet pipe 4 and a drain pipe 7. The two brackets 3 are bolted to one side of the housing 1, and the two brackets 3 are fixedly connected to the condenser 2. A liquid inlet is formed on one side of the housing 1. The two ends of the liquid inlet pipe 4 are flange-connected to the liquid inlet and the condenser 2, and one end of the condenser 2 is flange-connected to the drain pipe 7.

[0021] Example 2. Refer to Figures 1 - 7 , a fully premixed condensing heat exchanger with high-efficiency heat exchange. Compared with Example 1, on the basis of Example 1, a second stirring mechanism 16 is arranged on one side of the inner wall of the housing 1, and the second stirring mechanism 16 cooperates with the first stirring mechanism 15.

[0022] On the basis described above, the second stirring mechanism 16 is composed of a gear 30, a support base 28, a rotating shaft 29, a connecting sleeve 31 and a plurality of stirring blades 32. The two ends of the support base 28 are welded between the opposite inner walls of the housing 1. One side of the support base 28 is rotatably connected to the rotating shaft 29 through a bearing. The gear 30 is fixedly sleeved on the outer wall of the rotating shaft 29. The gear 30 meshes with the tooth groove. The connecting sleeve 31 is fixedly sleeved on the outer wall of the rotating shaft 29. The stirring blades 32 are fixedly arranged on the outer wall of the connecting sleeve 31 at equal intervals. The stirring blades 32 are inclined on the outer wall of the connecting sleeve 31. When the transmission component rotates under the action of the first stirring mechanism 15, the gear 30 drives the rotating shaft 29 to rotate through meshing. At this time, the stirring blades 32 will rotate synchronously with the rotation of the rotating shaft 29, so as to stir the cold water through the stirring blades 32, thereby improving the heat exchange effect of the heat exchanger. At this time, when the stirring blades 32 are rotating, the stirring blades 32 will drive the cold water to flow back, so as to slow down the flow speed of the cold water, so that the heat conducting fins 14 can heat the cold water, thereby further improving the heat exchange effect of the heat exchanger.

[0023] In summary, by means of the above technical solution of the present invention: when performing heat exchange treatment, cold water is transported to the inside of the housing 1 through the cold water pipe 13, gas is transported to the inside of the inner tank 9 through the gas pipe 12, and air will enter the inside of the inner tank 9 through the air pipe 10. At this time, the ignition needle 11 is started, and the ignition needle 11 will burn the gas, and the heat is transferred through the heat conduction sheet 14, so as to facilitate the heating treatment of the cold water. During this period, when the cold water enters the inside of the housing 1 through the cold water pipe 13, the impeller 19 will drive the rotating rod 18 to rotate under the impact of the cold water. At this time, the sleeve 20 will drive the blade 21 to rotate synchronously, so that the cold water can be stirred by the rotation of the blade 21, thereby improving the contact effect between the cold water and the heat conduction sheet 14. Since the blade 21 is made of magnetic material and there is mutual repulsion between the blade 21 and the magnet 23, when the blade 21 rotates, the distance between the blade 21 and the magnet 23 will gradually approach. At this time, the magnet 23 will squeeze the buffer pad 22 under the action of the repulsive force, and the gas inside the buffer pad 22 will be ejected through the nozzle 24 after being squeezed, so as to reduce the flow velocity of the cold water through the ejected air flow, thereby facilitating the improvement of the heating effect of the heat conduction sheet 14 on the cold water, preventing the heat conduction sheet 14 from being unable to effectively heat the cold water due to the relatively fast flow velocity of the water flow during the heating process of the cold water, resulting in poor heat exchange effect of the heat exchanger. When the cold water is stirred by the first stirring mechanism 15, another first stirring mechanism 15 stirs the water through the transmission component, thereby improving the heat exchange effect of the heat exchanger. When the transmission component rotates under the action of the first stirring mechanism 15, the gear 30 drives the rotating shaft 29 to rotate through meshing. At this time, the stirring blade 32 will rotate synchronously with the rotation of the rotating shaft 29, so that the cold water can be stirred by the stirring blade 32, thereby improving the heat exchange effect of the heat exchanger. At this time, when the stirring blade 32 rotates, the stirring blade 32 will drive the cold water to flow back, thereby slowing down the flow velocity of the cold water, so as to facilitate the heating treatment of the cold water by the heat conduction sheet 14, thereby further improving the heat exchange effect of the heat exchanger. After the cold water is heated, water vapor will be transported to the inside of the condenser 2 through the liquid inlet pipe 4 for condensation treatment, and the condensed cold water will be discharged through the drain pipe 7.

[0024] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A fully premixed condensing heat exchanger with high heat exchange efficiency, comprising a shell (1), characterized in that: The shell (1) has a cold water inlet and a hot water inlet at both ends of one side, and one side of the cold water inlet and the hot water inlet is connected to a cold water pipe (13) and a hot water pipe (8) via flanges, respectively. The shell (1) has a through opening (6) on one side, and the inner wall of the through opening (6) is connected to an inner tank (9) via bolts. A connecting port is formed through one side of the inner tank (9), and the inner wall of the connecting port is connected to an ignition needle (11) via bolts. Air inlets are formed through both ends of one side of the inner tank (9), and the inner walls of the two air inlets are connected to the inner tank (11) via flanges. A gas pipe (12) and an air pipe (10) are connected, condensing mechanisms are arranged on both sides of the shell (1), exhaust ports are penetrated through one side of the shell (1) and one side of the inner tank (9), and an exhaust pipe (5) is arranged between the two exhaust ports, multiple heat conduction ports are penetrated through the outer walls of both sides of the inner tank (9), and heat conduction plates (14) are connected to the inner walls of the heat conduction ports by bolts, first stirring mechanisms (15) are arranged on both sides of the inner wall of the shell (1), and a transmission assembly is arranged between the two first stirring mechanisms (15).

2. A fully premixed condensing heat exchanger with high heat exchange efficiency according to claim 1, characterized in that: The first stirring mechanism (15) comprises a support plate (17), a rotating rod (18), a plurality of sleeves (20) and a plurality of blades (21), and one side of the support plate (17) is welded to an inner wall of one side of the housing (1), one end of the rotating rod (18) is rotatably connected to the support plate (17) via a bearing, a plurality of sleeves (20) are fixedly sleeved on the outer wall of the rotating rod (18) at equal distances, a plurality of blades (21) are fixed on the outer wall of the sleeve (20) at equal distances, the blades (21) are made of magnetic material, and the blades (21) on two adjacent sleeves (20) are staggered, and one end of one of the rotating rods (18) is connected to an impeller (19) via bolts, and the impeller (19) is located on one side of the cold water pipe (13).

3. A fully premixed condensing heat exchanger with high heat exchange efficiency according to claim 2, characterized in that: A buffer pad (22) is provided between two adjacent heat conducting sheets (14), and one side of the buffer pad (22) is bonded to the outer wall of the inner tank (9), and a magnet (23) is bonded to the other side of the buffer pad (22). The magnet (23) and the blade (21) repel each other. The buffer pad (22) is made of a hollow elastic material. Spray holes are formed through the outer walls of both sides of the buffer pad (22), and a spray pipe (24) is provided on the inner wall of the spray hole. One end of the spray pipe (24) is inclined.

4. A fully premixed condensing heat exchanger with high heat exchange efficiency according to claim 3, characterized in that: The transmission assembly is composed of two pulleys (26) and a belt (27), and the two pulleys (26) and the belt (27) are rotatably connected. One end of each of the two rotating rods (18) is welded with a shaft (25), the two pulleys (26) are fixedly sleeved on the outer wall of the shaft (25), and the inner wall of the belt (27) is provided with a plurality of tooth grooves.

5. The fully premixed condensing heat exchanger with high heat exchange efficiency according to claim 1, characterized in that: The condensing mechanism comprises two brackets (3), a condenser (2), a liquid inlet pipe (4) and a drain pipe (7), wherein the two brackets (3) are connected to one side of the shell (1) by bolts, the two brackets (3) are fixedly connected to the condenser (2), one side of the shell (1) is provided with a liquid inlet, both ends of the liquid inlet pipe (4) are connected to the liquid inlet and the condenser (2) by flanges, and one end of the condenser (2) is connected to the drain pipe (7) by a flange.

6. A fully premixed condensing heat exchanger with high heat exchange efficiency according to claim 4, characterized in that: A second stirring mechanism (16) is provided on one side of the inner wall of the shell (1), and the second stirring mechanism (16) cooperates with the first stirring mechanism (15).

7. A fully premixed condensing heat exchanger with high heat exchange efficiency according to claim 6, characterized in that: The second stirring mechanism (16) is composed of a gear (30), a support seat (28), a rotating shaft (29), a connecting sleeve (31) and a plurality of stirring blades (32), and the two ends of the support seat (28) are welded to the inner walls of the housing (1) on both sides opposite to each other, one side of the support seat (28) is rotatably connected to the rotating shaft (29) via a bearing, the gear (30) is fixedly sleeved on the outer wall of the rotating shaft (29), the gear (30) is meshed with the tooth groove, the connecting sleeve (31) is fixedly sleeved on the outer wall of the rotating shaft (29), and the stirring blades (32) are fixedly sleeved on the outer wall of the connecting sleeve (31) at equal distances.

8. A fully premixed condensing heat exchanger with high heat exchange efficiency according to claim 7, characterized in that: The stirring blade (32) is arranged obliquely on the outer wall of the connecting sleeve (31).

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