Smoke exhaust pipe and gas water heater comprising same

Abstract

The utility model provides a smoke exhaust pipe and a gas water heater comprising the same, the smoke exhaust pipe comprises a smoke exhaust pipe body, and the smoke exhaust pipe further comprises an induction coil, a power supply circuit, an interlayer and a magnetic attraction part. The induction coil is arranged in the smoke exhaust pipe body, the power supply circuit is arranged in the smoke exhaust pipe body and used for providing a periodic power supply, the interlayer is arranged in the smoke exhaust pipe body and connected with the power supply circuit, and the size of the interlayer can be changed according to temperature changes so as to drive the power supply circuit to be electrically connected or disconnected with the induction coil. The magnetic attraction part is arranged outside the smoke exhaust pipe body and can be attracted magnetically. When the temperature is higher than the preset temperature, the power supply circuit is disconnected with the induction coil; when the temperature is lower than the preset temperature, the power supply circuit is electrically connected with the induction coil, and the induction coil can drive the magnetic attraction part to knock the smoke exhaust pipe body so that the smoke exhaust pipe body can recover to the non-freezing state. And the gas water heater can return to a normal working state by knocking the ice layer open through the magnetic attraction part.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a flue pipe and a gas water heater containing the same. 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 of existing technology where the exhaust pipe of gas water heaters will be blocked in winter in northern regions, and to provide an exhaust pipe and a gas water heater containing the exhaust pipe.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A smoke exhaust pipe includes a smoke exhaust pipe body, the smoke exhaust pipe further including:

[0006] An induction coil is disposed inside the exhaust pipe body;

[0007] A power supply circuit is disposed inside the exhaust pipe body, and the power supply circuit is used to provide periodic power.

[0008] A sandwich layer is disposed inside the exhaust pipe body. The sandwich layer is connected to the power supply circuit. The sandwich layer can change its volume according to temperature changes to drive the power supply circuit to electrically connect or disconnect from the induction coil.

[0009] A magnetic attraction component is disposed on the outside of the exhaust pipe body, and the magnetic attraction component can be attracted by magnetism.

[0010] When the temperature is higher than the preset temperature, the power supply circuit is disconnected from the induction coil; when the temperature is lower than the preset temperature, the power supply circuit is electrically connected to the induction coil, and the induction coil can drive the magnetic component to strike the exhaust pipe body so that the exhaust pipe body returns to a non-frozen state.

[0011] In this technical solution, when the temperature is higher than the preset temperature, the exhaust port of the exhaust pipe can exhaust smoke normally. When the temperature is lower than the preset temperature, the exhaust port of the exhaust pipe may freeze, and the volume of the interlayer increases. This causes the driving power supply circuit to move and connect with the induction coil. Since the power supply circuit can provide periodic power, the induction coil generates a periodic magnetic field. Under the action of this periodic magnetic field, the magnetic attraction component repeatedly strikes the outer periphery of the exhaust pipe body, thereby breaking the ice layer at the exhaust port and preventing the exhaust port from becoming blocked, which would cause smoke to accumulate inside the exhaust pipe.

[0012] Preferably, when the power supply circuit is electrically connected to the induction coil, the induction coil is periodically energized and de-energized. When the induction coil is energized, it is magnetic; when the induction coil is de-energized, it is not magnetic.

[0013] In this technical solution, the induction coil is configured to be periodically energized and de-energized when electrically connected to the power supply circuit. When the induction coil is energized, it is magnetic and attracts the magnetic attraction component to the exhaust pipe body to knock the ice. When the induction coil is de-energized, it is not magnetic and the magnetic attraction component moves away from the exhaust pipe body. When the induction coil is energized again, it knocks the exhaust pipe body again. This cycle continues until the exhaust pipe returns to its pre-freezing state.

[0014] 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 is connected to the power supply circuit.

[0015] In this technical solution, 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 connected to the power supply circuit. When the phase change fluid undergoes a volume change according to temperature, the membrane can drive the power supply circuit to move back and forth relative to the exhaust pipe body.

[0016] 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.

[0017] In this technical solution, 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 power supply circuit relative to the exhaust pipe body to electrically connect the power supply circuit with the induction coil.

[0018] Preferably, there are multiple induction coils and magnetic components, and each induction coil and magnetic component is arranged in a one-to-one correspondence.

[0019] In this technical solution, multiple induction coils and magnetic components are used to strike multiple parts on the outer periphery of the exhaust pipe body, so that the ice layer on the outer periphery of the exhaust pipe body can be broken as soon as possible, thereby allowing the water heater to return to normal as quickly as possible.

[0020] Preferably, the magnetic attraction component has a permanent magnet.

[0021] In this technical solution, by setting a permanent magnet in the magnetic attraction component, the interaction force between the permanent magnet and the induction coil is stronger, making the magnetic attraction component more reliable.

[0022] Preferably, the first end of the magnetic attraction component is connected to the outer periphery of the exhaust pipe body, and the second end of the magnetic attraction component is away from the exhaust pipe body. The magnetic attraction component is elastic so that when the induction coil is electrically connected to the power supply circuit, the second end of the magnetic attraction component can periodically tap the exhaust pipe body.

[0023] In this technical solution, the first end of the magnetic suction component is connected to the outer periphery of the exhaust pipe body, and the second end of the magnetic suction component is away from the exhaust pipe body. The magnetic suction component is elastic. When the magnetic suction component is attracted by the induction coil, the magnetic suction component knocks on the exhaust pipe body. When the magnetic suction component is not attracted by the induction coil, the elasticity of the magnetic suction component allows the magnetic suction component to return to the state where the second end is away from the exhaust pipe body.

[0024] Preferably, the second end of the magnetic attraction component protrudes towards the exhaust pipe body relative to the other parts of the magnetic attraction component.

[0025] In this technical solution, by setting the second end of the magnetic suction component to protrude relative to the other parts toward the exhaust pipe body, the second end of the magnetic suction component can more easily knock the ice layer on the outer periphery of the exhaust pipe body.

[0026] A water heater that includes a flue pipe as described above.

[0027] The positive and progressive effects of this utility model are as follows: by utilizing the expansion of the interlayer when the temperature decreases, the power supply circuit is driven to move to be electrically connected to the induction coil. Since the power supply circuit can provide periodic power, the induction coil generates a periodic magnetic field. Under the action of this periodic magnetic field, the magnetic attraction component repeatedly knocks on the outer periphery of the exhaust pipe body, thereby breaking the ice layer at the exhaust port and preventing the exhaust port from being blocked. Attached Figure Description

[0028] Figure 1 This is a partial structural diagram of the exhaust pipe in an embodiment of the present invention when it is not frozen.

[0029] Figure 2 for Figure 1An enlarged schematic diagram of part A in the middle.

[0030] Figure 3 This is a partial structural diagram of the exhaust pipe during icing according to an embodiment of the present invention.

[0031] Figure 4 for Figure 3 Enlarged diagram of part B.

[0032] Figure 5 This is a schematic diagram of the structure of a gas water heater according to an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100mm exhaust pipe

[0035] Smoke exhaust pipe body 1

[0036] Smoke exhaust port 11

[0037] Induction coil 2

[0038] Power supply circuit 3

[0039] Layer 4

[0040] Magnetic component 5

[0041] First end 51

[0042] Second end 52

[0043] Gas water heater 200 Detailed Implementation

[0044] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0045] like Figures 1-4 As shown, this embodiment provides a smoke exhaust pipe 100, which includes a smoke exhaust pipe body 1, an induction coil 2, a power supply circuit 3, a sandwich layer 4, and a magnetic attraction component 5. The induction coil 2 is disposed inside the smoke exhaust pipe body 1, and the power supply circuit 3 is disposed inside the smoke exhaust pipe body 1, providing periodic power. The sandwich layer 4 is disposed inside the smoke exhaust pipe body 1 and connected to the power supply circuit 3. The sandwich layer 4 can change its volume according to temperature changes to drive the power supply circuit 3 to electrically connect or disconnect from the induction coil 2. The magnetic attraction component 5 is disposed outside the smoke exhaust pipe body 1 and can be attracted by magnetism. Figure 1 and Figure 2 As shown, when the temperature exceeds the preset temperature, the power supply circuit 3 is disconnected from the induction coil 2; Figure 3 and Figure 4As shown, when the temperature is lower than the preset temperature, the power supply circuit 3 is electrically connected to the induction coil 2, and the induction coil 2 can drive the magnetic suction component 5 to knock on the exhaust pipe body 1 so that the exhaust pipe body 1 returns to the non-frozen state.

[0046] like Figure 1 and Figure 2 As shown, in this embodiment, when the temperature is higher than the preset temperature, the exhaust port 11 of the exhaust pipe 100 can exhaust smoke normally. When the temperature is lower than the preset temperature, the exhaust port 11 of the exhaust pipe 100 may freeze, the volume of the interlayer 4 increases, and the driving power supply circuit 3 moves to be electrically connected to the induction coil 2. Since the power supply circuit 3 can provide periodic power, the induction coil 2 generates a periodic magnetic field. Under the action of this periodic magnetic field, the magnetic attraction component 5 repeatedly knocks the outer periphery of the exhaust pipe body 1, thereby breaking the ice layer of the exhaust port 11, preventing the exhaust port 11 from being blocked and causing smoke to accumulate in the exhaust pipe 100, so that the exhaust pipe 100 can still be used in low temperature weather.

[0047] In this embodiment, the preset temperature is the temperature at which water vapor in the flue gas will condense into ice at the flue gas outlet 11 when it encounters cold outside air. The preset temperature is set to 0°C. In other embodiments, the value of the preset temperature can be determined based on relevant data in the prior art.

[0048] like Figure 3 and Figure 4 As shown in the figure, the smoke outlet 11 is filled with a diagonal line to indicate that the smoke outlet 11 is blocked by ice. In this embodiment, the power supply circuit 3 provides a power source that is periodically energized and de-energized. When the power supply circuit 3 is electrically connected to the induction coil 2, the induction coil 2 is periodically energized and de-energized. When the induction coil 2 is energized, it is magnetic; when the induction coil 2 is de-energized, it is not magnetic. By setting the induction coil 2 to be able to periodically energize and de-energize when electrically connected to the power supply circuit 3, when the induction coil 2 is energized, it is magnetic, attracting the magnetic attraction component 5 close to the smoke pipe body 1 to knock the ice. When the induction coil 2 is de-energized, it is not magnetic, and the magnetic attraction component 5 moves away from the smoke pipe body 1. When the induction coil 2 is energized, it knocks the smoke pipe body 1 again, and so on until the smoke pipe 100 returns to its pre-freezing state.

[0049] Of course, in other embodiments, the power supply circuit can also be a power source that provides current that changes direction periodically, thereby changing the direction of the magnetic field of the induction coil 2, so as to achieve the purpose of driving the magnetic attraction component 5 to repeatedly strike the exhaust pipe body 1. That is, when the induction coil 2 attracts the magnetic attraction component 5, the magnetic attraction component 5 strikes the exhaust pipe body 1, and when the induction coil 2 repels the magnetic attraction component 5, the magnetic attraction component 5 moves away from the exhaust pipe body 1. This will not be elaborated further here.

[0050] In this embodiment, the interlayer 4 includes a membrane filled with a phase change fluid. One end of the membrane is fixed to the exhaust pipe body 1, and the other end is connected to the power supply circuit 3. In other words, the volume change of the interlayer 4 is achieved through the phase change fluid. The interlayer 4 is a membrane filled with the phase change fluid, with one end fixed to the exhaust pipe body 1 and the other end connected to the power supply circuit 3. When the phase change fluid undergoes a volume change due to temperature, the membrane can drive the power supply circuit 3 to move back and forth relative to the exhaust pipe body 1.

[0051] Specifically, such as Figure 1 and Figure 2 As shown, above the preset temperature, the phase change fluid is in a liquid state, such as... Figure 3 and Figure 4 As shown, below the preset temperature, the phase change fluid is in a solid state, and the volume of the solid phase change fluid is larger than the volume of the liquid phase change fluid. Above the preset temperature, the phase change fluid is in a liquid state, and its volume is smaller. 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 4. The interlayer 4 pushes the power supply circuit 3 to move relative to the exhaust pipe body 1 so that the power supply circuit 3 is electrically connected to the induction coil 2.

[0052] In this embodiment, there are two induction coils 2 and two magnetic components 5, and the induction coils 2 and magnetic components 5 are arranged in a one-to-one correspondence. By setting two induction coils 2 and two magnetic components 5 to strike different parts of the outer periphery of the flue pipe body 1, the ice layer on the outer periphery of the flue pipe body 1 can be broken up as soon as possible, so that the water heater can be restored to normal as soon as possible.

[0053] Of course, in other embodiments, setting only one or more magnetic suction components 5 and setting an induction coil 2 corresponding to each magnetic suction component 5 can also achieve the knocking of the ice layer. Generally speaking, the more magnetic suction components 5 and induction coils 2 there are, the more evenly they are distributed near the exhaust port 11, and the shorter the time required for the magnetic suction components 5 to knock the ice layer and restore the exhaust port 11 to its unobstructed state.

[0054] In this embodiment, the magnetic attraction component 5 has a permanent magnet. By incorporating a permanent magnet in the magnetic attraction component 5, the interaction force between the permanent magnet and the induction coil 2 is stronger, making the magnetic attraction component 5 more reliable.

[0055] Of course, in other embodiments, the magnetic component 5 can also be a metal that can be magnetically attracted, such as iron, nickel, or cobalt, which will not be elaborated here.

[0056] like Figure 2 and Figure 4As shown, in this embodiment, the first end 51 of the magnetic suction component 5 is connected to the outer periphery of the exhaust pipe body 1, and the second end 52 of the magnetic suction component 5 is away from the exhaust pipe body 1. The magnetic suction component 5 is elastic, so that when the induction coil 2 is electrically connected to the power supply circuit 3, the second end 52 of the magnetic suction component 5 can periodically tap the exhaust pipe body 1. By connecting the first end 51 of the magnetic suction component 5 to the outer periphery of the exhaust pipe body 1 and the second end 52 of the magnetic suction component 5 is away from the exhaust pipe body 1, the magnetic suction component 5 is elastic. When the magnetic suction component 5 is attracted by the induction coil 2, the magnetic suction component 5 taps the exhaust pipe body 1. When the magnetic suction component 5 is not attracted by the induction coil 2, the elasticity of the magnetic suction component 5 allows the magnetic suction component 5 to return to the state where the second end 52 is away from the exhaust pipe body 1.

[0057] In other words, in this embodiment, when the induction coil 2 is not energized, the magnetic attraction component 5 elastically returns to a state where its second end 52 is far away from the exhaust pipe body 1. In other embodiments, when the magnetic attraction component 5 is a permanent magnet, it can also be reset by having the induction coil 2 generate a magnetic field that repels the magnetic attraction component 5; this will not be elaborated further here.

[0058] The power supply circuit 3 used in this embodiment is a commercially available product.

[0059] In this embodiment, the second end 52 of the magnetic suction component 5 protrudes towards the exhaust pipe body 1 relative to the other parts of the magnetic suction component 5. By setting the second end 52 of the magnetic suction component 5 to protrude towards the exhaust pipe body 1 relative to the other parts, the second end 52 of the magnetic suction component 5 can more easily knock against the ice layer on the outer periphery of the exhaust pipe body 1.

[0060] Specifically, in this embodiment, the second end 52 of the magnetic component 5 is provided with a spherical structure. In other embodiments, other shapes of structures protruding towards the exhaust pipe body 1 relative to other parts of the magnetic component 5 can be provided at the second end 52 of the magnetic component 5, such as small squares, etc., which will not be described in detail here.

[0061] like Figure 5 As shown, this embodiment also provides a gas water heater 200, which includes the exhaust pipe 100 as described above. By using the exhaust pipe 100 as described above in the gas water heater 200, the gas water heater 200 can be used normally in low-temperature winter weather.

[0062] 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, comprising a smoke exhaust pipe body, characterized in that, The exhaust pipe also includes: An induction coil is disposed inside the exhaust pipe body; A power supply circuit is disposed inside the exhaust pipe body, and the power supply circuit is used to provide periodic power. A sandwich layer is disposed inside the exhaust pipe body. The sandwich layer is connected to the power supply circuit. The sandwich layer can change its volume according to temperature changes to drive the power supply circuit to electrically connect or disconnect from the induction coil. A magnetic attraction component is disposed on the outside of the exhaust pipe body, and the magnetic attraction component can be attracted by magnetism. When the temperature is higher than the preset temperature, the power supply circuit is disconnected from the induction coil; when the temperature is lower than the preset temperature, the power supply circuit is electrically connected to the induction coil, and the induction coil can drive the magnetic component to strike the exhaust pipe body so that the exhaust pipe body returns to a non-frozen state.

2. The exhaust pipe as described in claim 1, characterized in that, When the power supply circuit is electrically connected to the induction coil, the induction coil is periodically energized and de-energized. When the induction coil is energized, it is magnetic; when the induction coil is de-energized, it is not magnetic.

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 is connected to the power supply circuit.

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, There are multiple induction coils and magnetic components, and each induction coil and magnetic component is arranged in a one-to-one correspondence.

6. The exhaust pipe as described in claim 1, characterized in that, The magnetic component has a permanent magnet.

7. The exhaust pipe as described in claim 1, characterized in that, The first end of the magnetic suction component is connected to the outer periphery of the exhaust pipe body, and the second end of the magnetic suction component is away from the exhaust pipe body. The magnetic suction component is elastic so that when the induction coil is electrically connected to the power supply circuit, the second end of the magnetic suction component can periodically tap the exhaust pipe body.

8. The exhaust pipe as described in claim 7, characterized in that, The second end of the magnetic component protrudes towards the exhaust pipe body relative to the other parts of the magnetic component.

9. A water heater, characterized in that, It includes a smoke exhaust pipe as described in any one of claims 1-8.

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