Anti-icing condensing stove chimney and energy-saving and environment-friendly water heater thereof

Abstract

The utility model discloses a kind of condensing furnace chimney of anti-inversion icing and energy-saving environment-friendly water heater, the chimney includes smoke cap, smoke cap includes inner sleeve, outer sleeve and the support seat being set between inner sleeve and outer sleeve, inner sleeve is equipped with the smoke outlet extending to the outer end of outer sleeve in axial direction, the guide piece group of smoke outlet is equipped with upward inclination, outer sleeve is equipped with rain hat in the direction of inner sleeve extension axial direction extension, outer sleeve is equipped with air inlet group in one end away from smoke outlet, air inlet group is located below inner sleeve. The chimney is improved to the smoke cap of outdoor, make the smoke outlet of smoke cap and air inlet group not be located on the same level, while flue gas is guided upward by guide piece group, greatly reduce the occurrence of the situation that flue gas is reabsorbed by air inlet, and due to air inlet group is located below inner sleeve and under the action of rain hat and support seat, it can play certain anti-inversion icing effect.

Description

Technical Field

[0001] This utility model relates to the field of chimney technology, specifically to a condensing furnace chimney that prevents backdraft and icing, and its energy-saving and environmentally friendly hot water boiler. Background Technology

[0002] A chimney is a structure that provides ventilation for hot flue gas or smoke from a hot water boiler or fireplace. Depending on the application environment, hot water boilers (whether gas-fired or electric) often employ a dual-structure chimney with both exhaust and air intake. This allows the exhaust gas to be expelled outdoors while drawing in outdoor air for combustion. Simultaneously, heat exchange occurs between the exhaust and air intake, achieving energy conservation and environmental protection. However, in actual operation, the proximity of the exhaust and air intake causes some flue gas to flow back into the boiler through the intake, reducing the oxygen content in the air and affecting the air-fuel ratio during combustion. Furthermore, in cold or rainy weather, rainwater or snow can easily enter the air intake, causing it to enter the boiler or freeze and block it, thus affecting the normal operation of the boiler.

[0003] In the prior art, a flue pipe for a gas-fired hot water device is disclosed, comprising an inner flue pipe, an outer air inlet pipe, and a bracket for supporting the inner flue pipe; the inner flue pipe is at least partially disposed inside the outer air inlet pipe; an air outlet is provided at the air outlet end of the inner flue pipe; an air inlet hole is provided on the portion of the outer air inlet pipe wall located below the inner flue pipe; the gap between the outer air inlet pipe and the inner flue pipe forms an annular air inlet cavity; the bracket is disposed between the outer wall of the inner flue pipe and the inner wall of the outer air inlet pipe; and an air inlet is provided on the bracket. As can be seen from the above-mentioned conventional technology, this current technology, by placing the air inlet at the bottom of the annular wall of the outer pipe while still providing an air inlet on the front of the outer pipe, results in the following problems during operation: due to the high pressure drawn in by the motor, the flue gas from the exhaust port is still drawn into the air inlet under the action of suction and wind force. Furthermore, rainwater flows into the air inlet cavity along the outer wall of the outer pipe, leading to an increase in condensate in the boiler body. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide a condensing furnace chimney that prevents backdraft and icing, thereby solving the aforementioned traditional problems.

[0005] The second objective of this utility model is to provide an energy-saving and environmentally friendly hot water boiler that uses the anti-backdraft icing condensing furnace chimney.

[0006] One of the objectives of this utility model is achieved through the following technical solution: A condensing furnace chimney for preventing backdraft icing includes a chimney cap, which includes an inner sleeve, an outer sleeve, and a support seat disposed between the inner sleeve and the outer sleeve. The inner sleeve has a flue gas outlet extending axially to the outer end of the outer sleeve, and the flue gas outlet has an upwardly inclined guide plate assembly. The outer sleeve has a rainproof cap extending axially along the direction of the inner sleeve. An air inlet assembly is opened at the end of the outer sleeve away from the flue gas outlet, and the air inlet assembly is located below the inner sleeve.

[0007] Preferably, the extension length of the exhaust port is 1.5-4 times the inner diameter of the outer casing.

[0008] Preferably, the guide plate group consists of several guide plates, which are inclined from bottom to top, and the inclination angle of the guide plates relative to the horizontal plane is 20°-60°.

[0009] Preferably, the air inlet group consists of a plurality of air inlets, which are elliptical, square, or circular in shape.

[0010] Preferably, the outer casing is provided with an anti-backdraft groove located on the outer edge of the air inlet group.

[0011] Preferably, the outer casing is further provided with an inclined rainwater guide channel.

[0012] Preferably, the rainwater guide channel is inclined from top to bottom, and the inclination angle of the rainwater guide channel relative to the horizontal plane is 20°-60°.

[0013] Preferably, the support base includes a support surface, a plurality of first support blocks and a second support block, the support surface having holes for the smoke exhaust port to pass through; the first support block is located inside the outer sleeve, one end of the first support block abuts against the inner wall of the outer sleeve, the other end of the first support block abuts against the outer wall of the inner sleeve, one end of the second support block abuts against the rain cap, and the other end of the second support block abuts against the outer wall of the smoke exhaust port.

[0014] Preferably, the condensing furnace chimney further includes an inner pipe, an outer pipe, an inner bend pipe, and an outer bend pipe. The inner pipe is fitted onto the inner sleeve by a first sealing ring. The outer sleeve has a connecting groove at the end away from the exhaust port. The outer pipe is fitted onto the connecting groove. The inner bend pipe is connected to the inner pipe by a second sealing ring. The outer bend pipe is connected to the outer pipe by a third sealing ring. The end of the outer pipe near the smoke cap has an annular water collection trough and an inner air inlet assembly. The bottom of the annular water collection trough has a drain hole. The inner air inlet assembly is located below the inner pipe.

[0015] The second objective of this utility model is achieved by the following technical solution: An energy-saving and environmentally friendly hot water boiler includes the aforementioned condenser chimney designed to prevent backdraft and icing.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: The condensing furnace chimney of this utility model improves the outdoor smoke cap so that the smoke outlet and the air inlet group are not on the same level. At the same time, the flue gas is guided upward by the guide plate group, which greatly reduces the occurrence of flue gas being re-inhaled by the air inlet. Furthermore, since the air inlet group is located below the inner sleeve and is supported by the rain cap and the support base, it can play a certain role in preventing backdraft and icing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the cigarette cap of this utility model; Figure 2 for Figure 1 The right view of the cigarette cap shown; Figure 3 for Figure 1 The left view of the cigarette cap shown; Figure 4 This is a front view of the condenser chimney of this utility model; Figure 5 for Figure 4 The cross-sectional view of the condensing furnace chimney is shown. Figure 6 for Figure 5 The enlarged view at point A is shown below; Figure 7 for Figure 4 The diagram shown is a partial exploded view of the condenser furnace chimney.

[0018] In the diagram: 10. Smoke cap; 11. Inner sleeve; 110. Smoke vent; 111. Guide plate assembly; 12. Outer sleeve; 120. Rain cap; 121. Air inlet assembly; 122. Anti-backdraft groove; 123. Rainwater guide groove; 13. Support base; 130. Support surface; 131. First support block; 132. Second support block; 20. Inner tube; 30. Outer tube; 31. Annular water collection groove; 32. Inner air inlet assembly. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0020] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In the description of this utility model, it should be understood that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be intermediate elements present. Conversely, when an element is referred to as being "directly" connected to another element, there are no intermediate elements.

[0022] Please see Figures 1-7 The condensing furnace chimney of this utility model is used to be installed in an energy-saving and environmentally friendly hot water boiler, such as a gas-fired heating hot water boiler, condensing furnace, water heater, etc., to prevent backdraft and icing, and to separate the exhaust and intake of smoke, reducing the amount of flue gas entering the furnace body with the air. Specifically, the condensing furnace chimney includes a chimney cap 10, which includes an inner sleeve 11, an outer sleeve 12 disposed outside the inner sleeve 11, and a support base 13 disposed between the inner sleeve 11 and the outer sleeve 12. The inner sleeve 11 has a flue gas outlet 110 extending axially to the outer end of the outer sleeve 12. The flue gas outlet 110 has an upwardly inclined guide plate group 111. The outer sleeve 12 extends axially along the direction of the inner sleeve 11 and has a rainproof cap 120. An air inlet group 121 is opened at the end of the outer sleeve 12 away from the flue gas outlet 110. The air inlet group 121 is located below the inner sleeve 11, so that the flue gas and the air inlet are not on the same level, reducing the occurrence of flue gas being re-inhaled by the air inlet. And because the air inlet group 121 is located below the inner sleeve 11 and under the action of the rainproof cap 120 and the support base 13, it plays a role in preventing backdraft and icing.

[0023] In this embodiment, the extension length of the smoke exhaust port 110 is 1.5-4 times the inner diameter of the outer casing 12, such as 1.5, 2, 2.5, 3, 3.5, 4, etc., which allows for adjusting the extension length of the smoke exhaust port according to the amount of smoke exhaust, further reducing the risk of smoke being inhaled. The extension length of the rain cap 120 is greater than that of the smoke exhaust port 110, enabling it to block rainwater from the smoke exhaust port 110.

[0024] In one embodiment, the guide plate group 111 consists of several guide plate groups 111, with the guide plates inclined from bottom to top. The inclination angle of the guide plates relative to the horizontal plane is 20°-60°, such as 20°, 30°, 40°, 50°, and 60°. The guide plates allow the flue gas to be discharged upwards as much as possible.

[0025] In this embodiment, the air inlet group 121 consists of several air inlet groups 121, and the air inlets are generally elliptical in shape. In other embodiments, the air inlets can also be other shapes such as square, circular, etc. To further improve the backdraft prevention performance of the air inlet group 121, the outer sleeve 12 is provided with a backdraft prevention groove 122 located on the outer edge of the air inlet group 121, so that a stepped groove is formed on the outer side of the air inlet group 121. To prevent rainwater from flowing into the air inlet group 121 along the outer wall of the outer sleeve 12, the outer sleeve 12 is also provided with an inclined rainwater guide groove 123. Optionally, the rainwater guide groove 123 is inclined from top to bottom (along the flue gas emission direction), and the inclination angle of the rainwater guide groove 123 relative to the horizontal plane is 20°-60°, such as 20°, 30°, 40°, 50°, 60°. After the rainwater flows into the groove, it flows out from the tail end and flows out of the chimney along the surface of the support base 13.

[0026] In this embodiment, the support base 13 includes a support surface 130, a plurality of first support blocks 131 and second support blocks 132. The support surface 130 has holes for the exhaust port 110 to pass through, and the rest is sealed to prevent smoke or air from entering the outer sleeve 12 from the front. The first support block 131 is located inside the outer sleeve 12. One end of the first support block 131 abuts against the inner wall of the outer sleeve 12, and the other end of the first support block 131 abuts against the outer wall of the inner sleeve 11. One end of the second support block 132 abuts against the rain cap 120, and the other end of the second support block 132 abuts against the outer wall of the exhaust port 110.

[0027] In this embodiment, the condensing furnace chimney also includes an inner pipe 20, an outer pipe 30, an inner bend pipe, and an outer bend pipe. The inner pipe 20 is fitted onto the inner sleeve 11 by a first sealing ring and abuts against each of the first support blocks 131. The outer sleeve 12 has a connecting groove at one end away from the exhaust port 110. The outer pipe 30 is fitted onto the connecting groove of the outer sleeve 12. The inner bend pipe is connected to the inner pipe 20 by a second sealing ring, and the outer bend pipe is connected to the outer pipe 30 by a third sealing ring. The outer pipe 30 has an annular water collection trough 31 and an inner air inlet assembly 32 at one end near the smoke cap 10. The bottom of the annular water collection trough 31 has a drain hole, and the inner air inlet assembly 32 is located below the inner pipe 20.

[0028] In this embodiment, the outer sleeve 12, inner sleeve 11, outer tube 30, and inner tube 20 can be cylindrical, elliptical, or other shaped pipes. The diameter of the outer sleeve 12 is larger than the diameter of the inner sleeve 11, and the diameter of the outer tube 30 is larger than the diameter of the inner tube 20.

[0029] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A condensing furnace chimney designed to prevent backdraft and icing, characterized in that, The device includes a cigarette cap, which comprises an inner sleeve, an outer sleeve, and a support seat disposed between the inner sleeve and the outer sleeve. The inner sleeve has a smoke vent extending axially to the outer end of the outer sleeve. The smoke vent has an upwardly inclined guide plate assembly. The outer sleeve has a rain cap extending axially along the direction of the inner sleeve. The outer sleeve has an air inlet assembly at the end away from the smoke vent, and the air inlet assembly is located below the inner sleeve.

2. The condensing furnace chimney for preventing backdraft icing according to claim 1, characterized in that, The extension length of the exhaust port is 1.5-4 times the inner diameter of the outer casing.

3. The condensing furnace chimney for preventing backdraft icing according to claim 1, characterized in that, The guide plate group consists of several guide plates, which are inclined from bottom to top, and the inclination angle of the guide plate relative to the horizontal plane is 20°-60°.

4. The condensing furnace chimney for preventing backdraft icing according to claim 1, characterized in that, The air inlet group consists of several air inlets, which are elliptical, square, or circular in shape.

5. The condensing furnace chimney for preventing backdraft icing according to claim 4, characterized in that, The outer casing is provided with anti-backdraft grooves located on the outer edge of the air inlet group.

6. The condensing furnace chimney for preventing backdraft icing according to claim 4, characterized in that, The outer casing is also equipped with an inclined rainwater guide channel.

7. The condensing furnace chimney for preventing backdraft icing according to claim 6, characterized in that, The rainwater guide channel is inclined from top to bottom, and the inclination angle of the rainwater guide channel relative to the horizontal plane is 20°-60°.

8. The condensing furnace chimney for preventing backdraft icing according to claim 1, characterized in that, The support base includes a support surface, a plurality of first support blocks and a second support block. The support surface has holes for the smoke exhaust port to pass through. The first support block is located inside the outer sleeve. One end of the first support block abuts against the inner wall of the outer sleeve, and the other end of the first support block abuts against the outer wall of the inner sleeve. One end of the second support block abuts against the rain cap, and the other end of the second support block abuts against the outer wall of the smoke exhaust port.

9. The condensing furnace chimney for preventing backdraft icing according to claim 1, characterized in that, The condensing furnace chimney also includes an inner pipe, an outer pipe, an inner bend pipe, and an outer bend pipe. The inner pipe is fitted onto the inner sleeve by a first sealing ring. The outer sleeve has a connecting groove at the end away from the exhaust port. The outer pipe is fitted onto the connecting groove. The inner bend pipe is connected to the inner pipe by a second sealing ring. The outer bend pipe is connected to the outer pipe by a third sealing ring. The end of the outer pipe near the smoke cap has an annular water collection trough and an inner air inlet assembly. The bottom of the annular water collection trough has a drain hole. The inner air inlet assembly is located below the inner pipe.

10. An energy-saving and environmentally friendly hot water boiler, characterized in that, Including the condenser chimney for preventing backdraft icing as described in any one of claims 1-9.

Images