Smoke exhaust pipe and water heater
By installing a movable inner cylinder and interlayer in the exhaust pipe, and using temperature changes to drive the opening and closing of the exhaust port, the problem of blockage in the exhaust pipe at low temperatures is solved, and the normal use and safe operation of the exhaust pipe at low temperatures is realized.
Patent Information
- Application Number
- CN202520066602.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-11
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-11
AI Technical Summary
In northern regions, when using gas water heaters in winter, water vapor in the flue gas discharged from the exhaust pipe is prone to condensation and accumulation at low temperatures, leading to blockage of the exhaust pipe, affecting the normal start-up of the water heater and creating safety hazards.
A flue pipe was designed, including a flue pipe body and an inner cylinder. The inner cylinder is movable, and the interlayer changes volume according to temperature changes to drive the inner cylinder to move. By opening and closing the primary and secondary flue holes, the flue gas can be discharged normally at low temperatures.
It effectively prevents the exhaust pipe from becoming clogged at low temperatures, ensuring the normal operation of the water heater and reducing safety hazards.
Smart Images
Figure CN223869221U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water heater technology, and in particular to a flue pipe and a water heater. Background Technology
[0002] In northern regions during winter, when using gas water heaters, the water vapor in the flue gas discharged from the exhaust pipe is easily condensed and accumulated around the exhaust port of the flue pipe due to the influence of strong cold air from the outside. This can cause the exhaust pipe to become blocked, preventing the gas water heater from starting properly and creating safety hazards. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the defect in the prior art that the flue of a water heater is easily blocked by water vapor condensation at low temperatures, and to provide a flue pipe and a water heater.
[0004] The present invention solves the above-mentioned technical problems through the following technical solution:
[0005] This utility model provides a smoke exhaust pipe, which includes a smoke exhaust pipe body and an inner cylinder. The exhaust pipe body has a plurality of smoke exhaust holes at its outlet end, and the inner cylinder is located at the outlet end of the exhaust pipe body. The inner cylinder is movable along the exhaust pipe body.
[0006] The exhaust pipe body and one end of the inner cylinder are provided with a sandwich layer. The sandwich layer can change its volume according to temperature changes to drive the inner cylinder to move back and forth relative to the exhaust pipe body.
[0007] The smoke exhaust port includes a primary smoke exhaust port and a secondary smoke exhaust port. When the temperature is higher than the preset temperature, the secondary smoke exhaust port is closed; when the temperature is lower than the preset temperature, the interlayer can push the inner cylinder to open the secondary smoke exhaust port.
[0008] In this design, the exhaust vents include primary and secondary exhaust vents. When the temperature is higher than the preset temperature, the secondary exhaust vent closes, and the flue gas is discharged from the primary exhaust vent. When the temperature is lower than the preset temperature, the primary exhaust vent freezes. At this time, the interlayer can push the inner cylinder to open the secondary exhaust vent, allowing the flue gas to be discharged to the outside through the secondary exhaust vent, so that the exhaust pipe can still be used normally at low temperatures.
[0009] Preferably, the exhaust pipe body is sleeved on the outside of the inner cylinder, the outside of the inner cylinder is in contact with the inside of the exhaust pipe body, and the inner cylinder has a hollow area;
[0010] When the temperature is higher than the preset temperature, the secondary smoke exhaust hole is closed by the inner cylinder; when the temperature is lower than the preset temperature, the interlayer can push the inner cylinder so that the hollow area coincides with the secondary smoke exhaust hole, so that the smoke can be discharged from the secondary smoke exhaust hole.
[0011] In this design, the opening and closing of the secondary exhaust vents is achieved by creating a perforated area within the inner cylinder. The exhaust pipe body is fitted onto the outside of the inner cylinder, with the outer side of the inner cylinder fitting snugly against the inner side of the exhaust pipe body. When the temperature is higher than a preset temperature, the secondary exhaust vents are sealed by the inner cylinder, allowing exhaust gas to exit only through the primary exhaust vents. Conversely, when the temperature is lower than the preset temperature, the primary exhaust vents freeze. At this point, the interlayer pushes the inner cylinder, causing the perforated area on the inner cylinder to align with the secondary exhaust vents, thus allowing exhaust gas to exit through the secondary exhaust vents. This ensures the exhaust pipe can still function normally at low temperatures.
[0012] Preferably, the interlayer includes a membrane filled with a phase change fluid, one end of the membrane is fixed to the exhaust pipe body, and the other end of the membrane abuts against the inner cylinder.
[0013] In this design, the volume change of the interlayer is achieved through a phase change fluid. The interlayer is a membrane filled with the phase change fluid, with one end of the membrane fixed to the exhaust pipe body and the other end abutting against the inner cylinder. When the phase change fluid undergoes a volume change according to temperature, the membrane can push the inner cylinder to move relative to the exhaust pipe body.
[0014] Preferably, the phase change fluid is in a liquid state above a preset temperature and in a solid state below a preset temperature, wherein the volume of the phase change fluid in its solid state is greater than the volume of the phase change fluid in its liquid state.
[0015] In this design, the phase change fluid is in a liquid state above a preset temperature, and its volume is relatively small. However, when the temperature is below the preset temperature, the phase change fluid is in a solid state, and its volume increases, thereby increasing the volume of the interlayer. The interlayer pushes the inner cylinder to move relative to the exhaust pipe body, thus opening the secondary exhaust port.
[0016] Preferably, the interlayer further includes a first magnet and a second magnet with opposite polarity to the first magnet. The first magnet is fixed to the exhaust pipe body, and the second magnet is fixed to the inner cylinder. The first magnet and the second magnet attract each other to bring the inner cylinder and the exhaust pipe body closer together.
[0017] In this design, the interlayer is further equipped with a first magnet and a second magnet with opposite polarity. The first and second magnets are fixed to the exhaust pipe body and the inner cylinder, respectively, so that the exhaust pipe body and the inner cylinder can be brought closer together by the attraction of the magnets. When the temperature is higher than the preset temperature, the volume of the interlayer decreases, and under the mutual attraction of the first and second magnets, the inner cylinder and the exhaust pipe body can return to their original positions to close the secondary exhaust port.
[0018] Preferably, the primary smoke exhaust hole is located on the periphery of the smoke exhaust pipe body, and the primary smoke exhaust hole is located in the hollow area.
[0019] In this solution, the primary exhaust vent is located in the hollow area, allowing the smoke to be discharged from the primary exhaust vent.
[0020] Preferably, the primary smoke exhaust port is located at one end of the inner cylinder near the interlayer.
[0021] In this solution, by placing the primary exhaust port at one end of the inner cylinder near the interlayer, the primary exhaust port and the interlayer are positioned closer together, which in turn makes their temperatures closer, allowing the interlayer to change its volume more precisely and further improving the antifreeze effect of the exhaust pipe.
[0022] Preferably, the secondary smoke exhaust port is located on the periphery of the smoke exhaust pipe body, and the secondary smoke exhaust port is located at the end of the inner cylinder away from the interlayer.
[0023] In this design, by placing the secondary exhaust vent near the end of the inner cylinder away from the interlayer, a certain temperature difference is created between the secondary exhaust vent and the interlayer. When the temperature of the interlayer is low, the secondary exhaust vent will not freeze.
[0024] Preferably, the area of the secondary smoke exhaust hole is smaller than the area of the primary smoke exhaust hole.
[0025] In this solution, by setting the area of the secondary exhaust port to be smaller than that of the primary exhaust port, when the primary exhaust port freezes, the flue gas will be discharged more slowly from the secondary exhaust port due to its smaller area. The heat of the flue gas will accumulate in the exhaust pipe, which will gradually melt the ice layer accumulated in the primary exhaust port, allowing the primary exhaust port to return to normal use more quickly and further improving the antifreeze effect of the exhaust pipe.
[0026] This utility model also provides a water heater, which includes the above-mentioned exhaust pipe.
[0027] In this solution, the water heater has the same effect as the exhaust pipe mentioned above.
[0028] The positive and progressive effects of this utility model are as follows:
[0029] This utility model provides a smoke exhaust pipe, which includes a pipe body and an inner cylinder. The outlet end of the pipe body has multiple smoke exhaust holes, and the inner cylinder is located at the outlet end of the pipe body and can move along the pipe body. A sandwich structure is provided at one end of the pipe body and the inner cylinder. This sandwich structure can change its volume according to temperature changes to drive the inner cylinder to move back and forth relative to the pipe body. The smoke exhaust holes include primary and secondary smoke exhaust holes. When the temperature is higher than a preset temperature, the secondary smoke exhaust holes are closed, and smoke is discharged from the primary smoke exhaust holes. When the temperature is lower than the preset temperature, the primary smoke exhaust holes are frozen. At this time, the sandwich structure can push the inner cylinder to open the secondary smoke exhaust holes, allowing smoke to be discharged to the outside through the secondary smoke exhaust holes, enabling the smoke exhaust pipe to still function normally at low temperatures. Attached Figure Description
[0030] Figure 1 This is a side view of a smoke exhaust pipe according to an embodiment of the present invention.
[0031] Figure 2 This is a side view of a flue pipe according to an embodiment of the present invention before freezing.
[0032] Figure 3 This is a side view of a flue pipe after freezing, according to an embodiment of the present invention.
[0033] Figure 4 This is a three-dimensional structural diagram of the inner cylinder according to an embodiment of the present invention.
[0034] Explanation of reference numerals in the attached figures:
[0035] 100mm exhaust pipe
[0036] Smoke exhaust pipe body 200
[0037] Smoke vent 210
[0038] Primary smoke exhaust port 211
[0039] Secondary smoke exhaust port 212
[0040] 220 cylinder cap
[0041] Inner cylinder 300
[0042] Hollowed-out area 310
[0043] 400 mezzanine
[0044] Skin 410
[0045] Phase change fluid 420
[0046] First magnet 430
[0047] Second magnet 440 Detailed Implementation
[0048] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the following embodiments.
[0049] like Figure 1 As shown in the figure, this embodiment provides a water heater, which includes a flue pipe 100.
[0050] like Figures 2-4 As shown, the exhaust pipe 100 includes an exhaust pipe body 200 and an inner cylinder 300. The exhaust pipe body 200 has multiple exhaust holes 210 at its outlet end. The inner cylinder 300 is located at the outlet end of the exhaust pipe body 200 and can move along the exhaust pipe body 200. A sandwich 400 is provided at one end of the exhaust pipe body 200 and the inner cylinder 300. The sandwich 400 can change its volume according to temperature changes to drive the inner cylinder 300 to move back and forth relative to the exhaust pipe body 200.
[0051] The smoke exhaust port 210 includes a primary smoke exhaust port 211 and a secondary smoke exhaust port 212. When the temperature is higher than the preset temperature, the secondary smoke exhaust port 212 is closed, and the smoke is discharged from the primary smoke exhaust port 211. When the temperature is lower than the preset temperature, the primary smoke exhaust port 211 is frozen, and the interlayer 400 can push the inner cylinder 300 to open the secondary smoke exhaust port 212, so that the smoke can be discharged to the outside through the secondary smoke exhaust port 212, allowing the smoke exhaust pipe 100 to still function normally at low temperatures.
[0052] In this embodiment, the opening and closing of the secondary exhaust port 212 is achieved by providing a perforated area 310 in the inner cylinder 300. The exhaust pipe body 200 is sleeved on the outside of the inner cylinder 300, with the outside of the inner cylinder 300 fitting against the inside of the exhaust pipe body 200. The inner cylinder 300 has a perforated area 310. When the temperature is higher than a preset temperature, the secondary exhaust port 212 is closed by the inner cylinder 300. When the temperature is lower than the preset temperature, the primary exhaust port 211 is frozen, and the interlayer 400 can push the inner cylinder 300 to make the perforated area 310 coincide with the secondary exhaust port 212, so that the smoke can be discharged from the secondary exhaust port 212, allowing the exhaust pipe 100 to still function normally at low temperatures. In other embodiments, other specific structures of the exhaust pipe body 200 and the inner cylinder 300 that are deemed suitable by those skilled in the art can also be selected.
[0053] In this embodiment, the interlayer 400 includes a membrane 410 filled with a phase change fluid 420. One end of the membrane 410 is fixed to the exhaust pipe body 200, and the other end of the membrane 410 abuts against the inner cylinder 300. The volume change of the interlayer 400 is achieved through the phase change fluid 420. When the phase change fluid 420 undergoes a volume change according to temperature, the membrane 410 can push the inner cylinder 300 to move relative to the exhaust pipe body 200. In other embodiments, other specific structures of the interlayer 400 that are deemed suitable by those skilled in the art can also be selected.
[0054] Above the preset temperature, the phase change fluid 420 is in a liquid state; below the preset temperature, the phase change fluid 420 is in a solid state. The volume of the solid state of the phase change fluid 420 is greater than the volume of the liquid state of the phase change fluid 420.
[0055] In this embodiment, the phase change fluid 420 is in a liquid state above a preset temperature, and its volume is relatively small. However, when the temperature is below the preset temperature, the phase change fluid 420 is in a solid state, and its volume increases. This increases the volume of the interlayer 400, which in turn pushes the inner cylinder 300 relative to the exhaust pipe body 200 to open the secondary exhaust port 212. In other embodiments, a phase change fluid 420 with a larger volume in its liquid state can be selected, and a structure matching the phase change fluid 420 can be provided to achieve the function of moving the inner cylinder 300.
[0056] In this embodiment, the preset temperature is 0°C. In other embodiments, those skilled in the art can select a suitable preset temperature based on the specific local temperature.
[0057] The interlayer 400 also includes a first magnet 430 and a second magnet 440 with opposite polarity to the first magnet 430. The first magnet 430 is fixed to the exhaust pipe body 200, and the second magnet 440 is fixed to the inner cylinder 300. The first magnet 430 and the second magnet 440 attract each other so that the inner cylinder 300 and the exhaust pipe body 200 are close to each other.
[0058] In this embodiment, the interlayer 400 is further provided with a first magnet 430 and a second magnet 440 with opposite polarity to the first magnet 430. The first magnet 430 and the second magnet 440 are respectively fixed to the exhaust pipe body 200 and the inner cylinder 300, so that the exhaust pipe body 200 and the inner cylinder 300 can be brought closer to each other by the attraction of the magnets. When the temperature is higher than a preset temperature, the volume of the interlayer 400 decreases, and under the mutual attraction of the first magnet 430 and the second magnet 440, the inner cylinder 300 and the exhaust pipe body 200 can return to their original positions to close the secondary exhaust port 212. In other embodiments, a spring can also be selected to achieve the mutual approach of the exhaust pipe body 200 and the inner cylinder 300, or other structures deemed suitable by those skilled in the art can be selected to achieve the mutual approach of the exhaust pipe body 200 and the inner cylinder 300.
[0059] In this embodiment, the primary exhaust port 211 is located on the periphery of the exhaust pipe body 200, within the hollowed-out area 310, allowing smoke to be discharged from the primary exhaust port 211. The primary exhaust port 211 is located at one end of the inner cylinder 300 near the interlayer 400, bringing the primary exhaust port 211 and the interlayer 400 closer together. This results in closer temperatures between the primary exhaust port 211 and the interlayer 400, allowing the interlayer 400 to change its volume more precisely and further improving the antifreeze effect of the exhaust pipe 100.
[0060] The secondary smoke exhaust port 212 is located on the periphery of the smoke exhaust pipe body 200. The secondary smoke exhaust port 212 is located at the end near the inner cylinder 300 and away from the interlayer 400, so that there is a certain temperature difference between the secondary smoke exhaust port 212 and the interlayer 400. When the temperature of the interlayer 400 is low, the secondary smoke exhaust port 212 will not be frozen.
[0061] In other embodiments, those skilled in the art can select appropriate locations for the primary smoke exhaust port 211 and the secondary smoke exhaust port 212 according to actual conditions.
[0062] The area of the secondary exhaust port 212 is smaller than that of the primary exhaust port 211. Therefore, when the primary exhaust port 211 freezes, the exhaust gas is discharged from the secondary exhaust port 212 more slowly due to the smaller area of the secondary exhaust port 212. The heat of the exhaust gas accumulates in the exhaust pipe 100, which allows the ice layer accumulated in the primary exhaust port 211 to gradually melt, enabling the primary exhaust port 211 to return to normal use more quickly and further improving the antifreeze effect of the exhaust pipe 100.
[0063] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship of the device or component during normal use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation at any time, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model in this respect.
[0064] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.
Claims
1. A smoke exhaust pipe, characterized in that, The exhaust pipe includes an exhaust pipe body and an inner cylinder. The exhaust pipe body has multiple exhaust holes at its outlet end. The inner cylinder is located at the outlet end of the exhaust pipe body and can move along the exhaust pipe body. The exhaust pipe body and one end of the inner cylinder are provided with a sandwich layer. The sandwich layer can change its volume according to temperature changes to drive the inner cylinder to move back and forth relative to the exhaust pipe body. The smoke exhaust port includes a primary smoke exhaust port and a secondary smoke exhaust port. When the temperature is higher than the preset temperature, the secondary smoke exhaust port is closed; when the temperature is lower than the preset temperature, the interlayer can push the inner cylinder to open the secondary smoke exhaust port.
2. The exhaust pipe as described in claim 1, characterized in that, The exhaust pipe body is sleeved on the outside of the inner cylinder, and the outside of the inner cylinder fits against the inside of the exhaust pipe body. The inner cylinder has a hollow area. When the temperature is higher than the preset temperature, the secondary smoke exhaust hole is closed by the inner cylinder; when the temperature is lower than the preset temperature, the interlayer can push the inner cylinder so that the hollow area coincides with the secondary smoke exhaust hole, so that the smoke can be discharged from the secondary smoke exhaust hole.
3. The exhaust pipe as described in claim 1, characterized in that, The interlayer includes a membrane filled with a phase change fluid. One end of the membrane is fixed to the exhaust pipe body, and the other end of the membrane abuts against the inner cylinder.
4. The exhaust pipe as described in claim 3, characterized in that, Above a preset temperature, the phase change fluid is in a liquid state; below a preset temperature, the phase change fluid is in a solid state, and the volume of the solid state of the phase change fluid is greater than the volume of the liquid state of the phase change fluid.
5. The exhaust pipe as described in claim 1, characterized in that, The interlayer also includes a first magnet and a second magnet with opposite polarity to the first magnet. The first magnet is fixed to the exhaust pipe body, and the second magnet is fixed to the inner cylinder. The first magnet and the second magnet attract each other to bring the inner cylinder and the exhaust pipe body closer together.
6. The exhaust pipe as described in claim 2, characterized in that, The primary smoke exhaust hole is located on the periphery of the smoke exhaust pipe body, and the primary smoke exhaust hole is located in the hollow area.
7. The exhaust pipe as described in claim 6, characterized in that, The primary smoke exhaust port is located at one end of the inner cylinder near the interlayer.
8. The exhaust pipe as described in claim 1, characterized in that, The secondary smoke exhaust port is located on the periphery of the smoke exhaust pipe body, and the secondary smoke exhaust port is located at the end of the inner cylinder away from the interlayer.
9. The exhaust pipe as described in any one of claims 1-8, characterized in that, The area of the secondary smoke exhaust hole is smaller than the area of the primary smoke exhaust hole.
10. A water heater, characterized in that, It includes a smoke exhaust pipe as described in any one of claims 1-9.