A fully premixed condensing heat exchanger with high-efficiency heat transfer

Abstract

The present invention belongs to the technical field of heaters, in particular to a fully premixed condensing heat exchanger with efficient heat exchange. The following scheme is now proposed, including a housing. At both ends of one side of the housing, a cold water inlet and a hot water outlet are respectively provided, and a cold water pipe and a hot water pipe are respectively connected to the cold water inlet and the hot water outlet through flanges on one side. A through port is provided on one side of the housing, and an inner tank is connected to the inner wall of the through port by bolts. A connection port is penetrated and provided on one side of the inner tank, and an ignition needle is connected to the inner wall of the connection port by bolts. Intake ports are penetrated and provided at both ends of one side of the inner tank, and a gas pipe and an air pipe are respectively connected to the inner walls of the two intake ports through flanges. Condensing mechanisms are provided on both sides of the housing. The present invention is convenient for improving the heating effect of the heat conducting fins on the cold water, preventing the heat conducting fins 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.

Description

Technical Field

[0001] The present invention relates to the field of heaters, and particularly to a fully premixed condensing heat exchanger with high-efficiency 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-mounted 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 high-efficiency heat exchange, including a housing. A combustion chamber, a heat exchange chamber, and a condensing smoke exhaust chamber are sequentially installed in the housing; an inlet pipe, an outlet pipe, and an intake pipe are provided on the housing; the inlet pipe and the outlet pipe are respectively communicated with the heat exchange chamber, and the intake pipe is communicated with the combustion chamber; the heat exchange chamber includes heat exchange coils and heat conducting fins, and 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 in the heat conducting fins to conduct 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 in the dispersion channels, increasing the heat exchange area, causing the heat flow to spread around, thereby slowing down the flow rate of the heat flow in the heat conducting fins, and enabling the heat conducting fins to absorb heat more fully.

[0004] When the existing heat exchanger conducts heat exchange, water is usually transported 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:

[0006] A fully premixed condensing heat exchanger with high-efficiency 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 port is provided on one side of the housing, and an inner tank is connected to the inner wall of the through port 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.

[0007] 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 distances. A plurality of blades are fixedly arranged on the outer walls of the sleeves at equal distances. 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.

[0008] Preferably, a buffer pad is provided between adjacent two heat conduction sheets. One side of the buffer pad is adhered to the outer wall of the inner tank, and a magnet is adhered 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.

[0009] Preferably, the transmission component is composed of two belt pulleys and a belt. The two belt pulleys and the belt are rotatably connected. One ends of the two rotating rods are welded with shaft rods, and the two belt pulleys are fixedly sleeved on the outer walls of the shaft rods. A plurality of tooth grooves are provided on the inner wall of the belt.

[0010] 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 are fixedly connected to the condenser. A liquid inlet is provided on one side of the housing. The two 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.

[0011] Preferably, a second stirring mechanism is provided on one side of the inner wall of the housing, and the second stirring mechanism cooperates with the first stirring mechanism.

[0012] 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.

[0013] Preferably, the stirring blades are inclined on the outer wall of the connecting sleeve.

[0014] The beneficial effects of the present invention are as follows:

[0015] In the present invention, through the arranged first stirring mechanism, during the heat exchange process, cold water is conveyed into the housing through the cold water pipe, gas is conveyed into the inner tank through the gas pipe, and air enters the inner tank through the air pipe. At this time, the ignition needle is started, and the ignition needle will burn the gas, and the heat is transferred through the heat conducting sheet, so as to facilitate the heating 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 rotation of the blade can stir the cold water, 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 velocity of the cold water through the ejected air flow, so as to facilitate improving 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 velocity of the water during the heating process, resulting in poor heat exchange effect of the heat exchanger;

[0016] In the present invention, through the arranged first stirring mechanism and second stirring mechanism, when the first stirring mechanism stirs the cold water, the other 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 blade will rotate synchronously with the rotation of the rotating shaft, so as to stir the cold water through the stirring blade, thereby improving the heat exchange effect of the heat exchanger. At this time, when the stirring blade rotates, the stirring blade will drive the cold water to flow back, so as to slow down the flow velocity of the cold water, so as to facilitate the heat conducting sheet to heat the cold water, thereby further improving the heat exchange effect of the heat exchanger. Description of the Drawings

[0017] Figure 1Schematic structural diagram of a fully premixed condensing heat exchanger with high-efficiency heat transfer proposed by the present invention;

[0018] Figure 2 Schematic cross-sectional structural diagram of a fully premixed condensing heat exchanger with high-efficiency heat transfer proposed by the present invention;

[0019] Figure 3 Schematic partial structural diagram of a fully premixed condensing heat exchanger with high-efficiency heat transfer proposed by the present invention;

[0020] Figure 4 Schematic structural diagram of the first stirring mechanism and the second stirring mechanism of a fully premixed condensing heat exchanger with high-efficiency heat transfer proposed by the present invention;

[0021] Figure 5 is Figure 4 Schematic structural diagram of the structure at position A proposed in;

[0022] Figure 6 Schematic structural diagram of the transmission component and the second stirring mechanism of a fully premixed condensing heat exchanger with high-efficiency heat transfer proposed by the present invention;

[0023] Figure 7 Schematic structural diagram of the second stirring mechanism of a fully premixed condensing heat exchanger with high-efficiency heat transfer proposed by the present invention.

[0024] 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 conducting sheet; 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

[0025] Example 1, refer 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. 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 through 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 through 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 and 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.

[0026] 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. 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. A plurality of sleeves 20 are fixedly sleeved on the outer wall of the rotating rod 18 at equal intervals. A plurality of blades 21 are fixedly arranged on the outer wall of the sleeves 20 at equal intervals. The blades 21 are made of 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.

[0027] On the basis described above, a buffer pad 22 is provided between two adjacent heat conducting fins 14. One side of the buffer pad 22 is adhesively bonded to the outer wall of the inner tank 9, and a magnet 23 is adhesively 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 both outer walls of the buffer pad 22. A spray pipe 24 is provided 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 improving 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 relatively fast flow rate of the water flow during the heating process of the cold water, resulting in a 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 assembly, thereby improving the heat exchange effect of the heat exchanger.

[0028] On the basis described above, the transmission assembly is composed of two belt pulleys 26 and a belt 27. 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. The two belt pulleys 26 are fixedly sleeved on the outer walls of the shaft rods 25. A plurality of tooth grooves are formed on the inner wall of the belt 27.

[0029] On the basis described 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. 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. One end of the condenser 2 is flange-connected to the drain pipe 7.

[0030] Example 2, referring 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 provided on one side of the inner wall of the housing 1, and the second stirring mechanism 16 cooperates with the first stirring mechanism 15.

[0031] On the basis described above, 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. Both ends of the support seat 28 are welded between the opposite inner walls of the housing 1. One side of the support seat 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, thereby slowing down the flow rate of the cold water, so as to facilitate the heating of the cold water by the heat conducting fins 14, thereby further improving the heat exchange effect of the heat exchanger.

[0032] In summary, by means of the above technical solutions 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 activated, 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 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 rate 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 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. When stirring the cold water through the first stirring mechanism 15, another first stirring mechanism 15 stirs the water through the transmission assembly, thereby improving the heat exchange effect of the heat exchanger. When the transmission assembly 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 as to stir the cold water through 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 rate 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.

[0033] 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-efficiency heat transfer, comprising a housing (1), characterized in that, 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 opening (6) is provided on one side of the housing (1), and an inner tank (9) is connected to the inner wall of the through opening (6) by bolts. A connection port is penetrated through on one side of the inner tank (9), and an ignition needle (11) is connected to the inner wall of the connection port by bolts. At both ends of one side of the inner tank (9), air inlets are penetrated through, and on the inner walls of the two air inlets, a gas pipe (12) and an air pipe (10) are respectively connected by flanges. Condensing mechanisms are provided on both sides of the housing (1). Exhaust ports are penetrated through on 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 on the outer walls of both sides of the inner tank (9), and heat conduction sheets (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). 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. A plurality of sleeves (20) are fixedly sleeved on the outer wall of the rotating rod (18) at equal intervals. A plurality of blades (21) are fixed 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. The impeller (19) is located on one side of the cold water pipe (13). A buffer pad (22) is provided between adjacent two heat conduction sheets (14). And one side of the buffer pad (22) is adhered to the outer wall of the inner tank (9). A magnet (23) is adhered 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 penetrated through on 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. The transmission assembly 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). One end of each of the two rotating rods (18) is welded with a shaft rod (25). The two belt pulleys (26) are fixedly sleeved on the outer wall of the shaft rod (25). A plurality of tooth grooves are provided on the inner wall of the belt (27).

2. The all-premixed condensing heat exchanger for efficient heat exchange according to claim 1, wherein, 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 are fixedly connected to the condenser (2). An inlet port is provided on one side of the housing (1). The two ends of the liquid inlet pipe (4) are flange-connected between the inlet port and the condenser (2), and one end of the condenser (2) is flange-connected to the drain pipe (7).

3. An all-premixed condensing heat exchanger with high-efficiency heat exchange according to claim 1, characterized in that A second stirring mechanism (16) is provided on one side of the inner wall of the housing (1), and the second stirring mechanism (16) cooperates with the first stirring mechanism (15).

4. An all-premixed condensing heat exchanger for efficient heat exchange according to claim 3, characterized in that, The second stirring mechanism (16) consists 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 to 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), and the gear (30) meshes 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 arranged on the outer wall of the connecting sleeve (31) at equal intervals.

5. An all-premixed condensing heat exchanger with high-efficiency heat exchange according to claim 4, characterized in that, The stirring blades (32) are inclined on the outer wall of the connecting sleeve (31).

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