Smoke exhaust pipe and gas water heater using same
By introducing a signal generating and receiving device into the exhaust pipe and utilizing the displacement of the movable parts under the action of wind pressure to induce the magnetic field signal, the problem of the gas water heater being unable to adjust the exhaust wind force is solved, and wind pressure-adaptive exhaust control is achieved to prevent flameout.
Patent Information
- Application Number
- CN202420454037.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-08
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-08
AI Technical Summary
The exhaust pipe of the existing gas water heater cannot measure the external wind pressure, resulting in the inability to adjust the exhaust wind speed according to the external wind pressure, and the inability to discharge the smoke outdoors in time, which can easily cause the fire to extinguish due to backflow of wind.
A smoke exhaust pipe is designed, which includes a smoke pipe body, a signal generating device (such as a permanent magnet) and a signal receiving device (such as a Hall sensor). The movable parts are connected by elastic parts. Under the action of external wind pressure, the movable parts are displaced. The signal receiving device senses the magnetic field signal to determine the wind pressure level, and the controller adjusts the fan speed.
The exhaust wind speed is adjusted according to the external wind pressure, the smoke is discharged in time, and the gas water heater is prevented from being shut down due to backflow of wind. The structure is simple and flexible.
Smart Images
Figure CN222504348U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of gas water heaters, in particular to a smoke exhaust pipe and a gas water heater using the same. Background Art
[0002] The wind pressure of the gas water heater must meet domestic or international standards to ensure that the smoke can be discharged outdoors in time even if there is wind backflow from the outside during the use of the household gas water heater. Top-draw gas water heaters generally use a single-layer smoke pipe to discharge the smoke generated during the operation of the gas water heater. One end of the single-layer smoke pipe is connected to the gas collection hood, and the other end leads to the outdoors. The gas collection hood is used to collect the smoke generated during the operation, and the single-layer smoke pipe is used to discharge the smoke in the gas collection hood to the outdoors.
[0003] The existing smoke exhaust pipe usually only has the function of exhausting smoke, but cannot be used in conjunction with the gas water heater to measure the external wind pressure. Therefore, the gas water heater can adjust the exhaust wind force of the gas water heater according to the external wind pressure, exhaust the smoke outdoors in time, and prevent the gas water heater from being extinguished due to wind backflow. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the defect in the prior art that the smoke exhaust pipe of the gas water heater cannot measure the size of the external wind pressure, so that the gas water heater cannot adjust the exhaust wind force according to the size of the external wind pressure, and cannot discharge the smoke to the outside in time, resulting in the water heater being shut down due to wind backflow. A smoke exhaust pipe and a gas water heater using the same are provided.
[0005] The utility model solves the above technical problems through the following technical solutions:
[0006] A smoke exhaust pipe comprises a smoke exhaust pipe body, a signal generating device and a signal receiving device, the smoke exhaust pipe further comprising a movable part and an elastic part, the movable part is arranged in the smoke exhaust pipe body and connected through the elastic part, the movable part is arranged to be able to overcome the elastic force of the elastic part and displace under the action of external wind pressure; the signal generating device is arranged on the movable part, the signal receiving device is arranged on the smoke exhaust pipe body, and the signal receiving device can receive the signal of the signal generating device when the movable part undergoes a preset displacement.
[0007] In this solution, the movable part is configured to be able to overcome the elastic force of the elastic part and displace under the action of external wind pressure. The signal generating device is arranged on the smoke pipe body and can be displaced along with the movable part. When the movable part undergoes a preset displacement, the signal receiving device receives the signal of the signal generating device, and the level of the external wind pressure is judged based on whether the signal receiving device receives the signal.
[0008] Preferably, the signal generating device is a permanent magnet, and the signal receiving device is a Hall sensor.
[0009] In this solution, when a magnet is brought close to the Hall sensor, the Hall sensor can sense the magnetic field generated by the permanent magnet and generate an electrical signal, which is beneficial to simplifying the structure of the smoke exhaust pipe and making the structure simple and flexible.
[0010] Preferably, the Hall sensor is arranged on the outer surface of the cigarette tube body.
[0011] In this solution, the Hall sensor is arranged on the outer surface of the smoke tube body, which prevents the Hall sensor and the electronic circuit connected thereto from interfering with the movable parts arranged inside the smoke tube body and hindering the smooth movement of the movable parts; it is also beneficial to the arrangement of the electronic circuit connected to the Hall sensor.
[0012] Preferably, there are a plurality of the Hall sensors, and the plurality of the Hall sensors are arranged at intervals along the axial direction of the cigarette tube body.
[0013] In this solution, there are multiple Hall sensors. When the permanent magnet moves with the movable part, it passes through multiple Hall sensors. The Hall sensors receive the magnetic field and generate electrical signals. When used in conjunction with the gas water heater, controller and fan, they can measure multiple levels of wind pressure. The gas water heater appropriately adjusts the fan speed according to different wind pressure levels to prevent the gas water heater from being shut down due to backflow of wind due to excessive external wind pressure.
[0014] Preferably, the plurality of Hall sensors are evenly spaced and distributed.
[0015] In this solution, multiple Hall sensors are evenly spaced, which is conducive to measuring multiple levels of wind pressure. Under the action of wind pressure, the movable part overcomes the elastic force of the elastic part to produce displacement, and the displacement between two different wind pressures is uniform and regular. The Hall sensors arranged evenly spaced have regularity, which is conducive to measuring multiple levels of wind pressure.
[0016] Preferably, the movable part is cylindrical, and the permanent magnet is arranged on the inner surface of the movable part.
[0017] In this solution, the permanent magnet is arranged on the inner surface of the movable part, so as to avoid the friction generated by the contact between the permanent magnet and the inner surface of the cigarette pipe body, which would hinder the displacement of the movable part.
[0018] Preferably, the elastic member is a spring.
[0019] In this solution, the spring can generate elastic force when elastic deformation occurs, and can push the movable part back to the initial position when the external wind pressure decreases.
[0020] Preferably, the exhaust pipe further comprises an exhaust end, and a plurality of evenly spaced circular exhaust holes are arranged in the circumference of the exhaust end. The exhaust holes are arranged to facilitate exhausting the exhaust gas generated by the gas water heater.
[0021] The utility model also provides a gas water heater, which includes the exhaust pipe, controller and fan as described above, wherein the fan and the signal receiving device are electrically connected to the controller respectively. Under the action of wind pressure, the controller receives the electrical signal output by the exhaust pipe to judge the wind pressure level, and then adjusts the speed of the fan according to the wind pressure level, which is conducive to timely exhaust of exhaust gas and prevents flameout due to wind backflow when the external wind pressure is too high.
[0022] The positive progressive effect of the utility model is that the smoke exhaust pipe of the utility model has a simple structure, can cooperate with the gas water heater to measure the external wind pressure, and adjust the exhaust wind force of the gas water heater according to the external wind pressure, which is conducive to timely discharge of smoke to the outdoors and helps to avoid the gas water heater from being shut down due to backflow of wind. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the smoke exhaust pipe according to an embodiment of the utility model.
[0024] Figure 2 for Figure 1 Schematic diagram of the cross section of the exhaust pipe.
[0025] Description of reference numerals:
[0026] Cigarette pipe body 101
[0027] Exhaust hole 102
[0028] Hall sensor 103
[0029] Permanent magnet 104
[0030] Elastic member 105
[0031] Active parts 106
[0032] Connection part 107
[0033] Exhaust end 108
[0034] Inlet end 109
[0035] End cap 110 DETAILED DESCRIPTION
[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0039] Example 1
[0040] like Figure 1-2 As shown, the embodiment of the utility model provides a smoke exhaust pipe, which includes a smoke pipe body 101, a signal generating device, a movable member 106, and an elastic member 105. The movable member 106 is arranged in the smoke pipe body 101 and connected through the elastic member 105. The movable member 106 is arranged to be able to overcome the elastic force of the elastic member 105 and displace under the action of external wind pressure; the signal generating device is arranged on the movable member 106, and the signal receiving device is arranged on the smoke pipe body 101. The signal receiving device can receive the signal of the signal generating device when the movable member 106 is displaced by a preset displacement. The smoke pipe body 101 also includes an air inlet end 109, and the exhaust gas of the gas water heater enters from the air inlet end 109 and is discharged from the exhaust end 108.
[0041] When in use, under the action of external wind pressure, the movable part 106 overcomes the elastic force of the elastic part 105 and moves. The signal generating device is arranged on the movable part 106 and moves with the elastic part 105. When the preset displacement occurs, the receiving device receives the signal generated by the signal generating device, and the level of the external wind pressure is judged according to whether the signal receiving device receives the signal.
[0042] Specifically, in this embodiment, the elastic member 105 is a spring, which can generate elastic force when elastic deformation occurs, and can push the movable member 106 to return to the initial position when the external wind pressure decreases.
[0043] Specifically, in this embodiment, the elastic member 105 is a preload spring, which is annular and sleeved between the movable member 106 and the cigarette pipe body 101. The preload spring has good stability and a longer service life. Specifically, in an implementable embodiment, the signal generating device is a permanent magnet 104, and the signal emitted is a magnetic field. The permanent magnet 104 is disposed on the inner surface of the bottom of the movable member; the signal receiving device is a Hall sensor 103, and the Hall sensor 103 is disposed on the outer surface of the cigarette pipe body 101.
[0044] The Hall sensor 103 is arranged on the outer surface of the cigarette pipe body 101, which prevents the Hall sensor and the electronic circuit connected thereto from interfering with the movable part 106 arranged inside the cigarette pipe body, thereby preventing the movable part 106 from moving smoothly; it is also beneficial to the arrangement of the electronic circuit connected to the Hall sensor 103. Specifically, in this embodiment, the signal receiving device is a plurality of Hall sensors 103, and the plurality of Hall sensors 103 are arranged at intervals along the axial direction of the cigarette pipe body 101.
[0045] There are multiple Hall sensors 103. When the permanent magnet moves with the movable part, it passes through multiple Hall sensors. The Hall sensors receive the magnetic field and generate electrical signals. When used in conjunction with the gas water heater, controller and fan, they can measure multiple levels of wind pressure. When used in conjunction with the gas water heater, controller and fan, it is beneficial to obtain different levels of wind pressure. The gas water heater appropriately adjusts the speed of the fan according to different wind pressure levels to prevent the gas water heater from being shut down due to wind backflow due to excessive external wind pressure.
[0046] Specifically, in this embodiment, a connection portion 107 connected to the elastic member 105 is further provided on the inner surface of the smoke pipe body. Compared with the multiple Hall sensors 103, the connection portion 107 is provided on the side closer to the air inlet end 109, so that the permanent magnet can pass through all the Hall sensors 103 when it is displaced. The movable member is provided with a hollow, unclosed end cap 110 at the bottom near the exhaust hole 102, and the end cap 110 is connected to the elastic member 105. The movable member with the end cap 110 can generate a stronger pressure under the action of wind pressure, so as to overcome the elastic force of the elastic member 105 and generate displacement.
[0047] When in use, the exhaust pipe is installed on the gas water heater, and the gas water heater also includes a controller and a fan, and the fan and multiple Hall sensors 103 are respectively connected to the controller. When the gas water heater is started, the controller first controls the fan to run at a preset lower speed for a preset time, and the preset time in this embodiment is ten seconds, to clear the gas in the exhaust pipe. At the same time, the wind pressure is measured. Under the action of external wind pressure, the movable part 106 overcomes the elastic force of the elastic part 105 to displace, driving the permanent magnet 104 set on the movable part 106 to move. During the movement, the first Hall sensor senses the magnetic field of the permanent magnet 104 and generates an electrical signal to transmit to the controller. At this time, the wind pressure is level one. When the wind force becomes stronger, the movable part 106 continues to overcome the elastic force to displace, and the second Hall sensor senses the magnetic field signal and generates an electrical signal to transmit to the controller. At this time, the wind pressure is level two. Similarly, when the movable part 106 continues to generate a larger displacement, it approaches the third, fourth, and fifth Hall sensors in turn, and the Hall sensors sense the magnetic field signal and generate an electrical signal to transmit to the controller. The wind pressure levels are three, four, and five, respectively. When the external wind pressure decreases, the elastic force is slightly greater than the wind pressure, and the movable part 106 moves in the direction of resetting. When the permanent magnet 104 on the movable part 106 senses one of the Hall sensors 103, the corresponding Hall sensor senses the magnetic field signal and generates an electrical signal to transmit to the controller, and the corresponding level of wind pressure is obtained. The controller receives the signal transmitted by the corresponding Hall sensor and controls the fan to increase or decrease the fan speed according to the corresponding wind pressure. When the wind pressure level is high, the fan speed is increased; when the wind pressure level is low, the fan speed is reduced.
[0048] Specifically, in this embodiment, the number of Hall sensors 103 is five and they are evenly spaced, which is conducive to measuring multiple levels of wind pressure. Under the action of wind pressure, the movable part overcomes the elastic force of the elastic part to produce displacement, and the displacement between two different wind pressures is uniform and regular. The Hall sensors evenly spaced have regularity, which is conducive to measuring multiple levels of wind pressure. The spacing of the evenly spaced distribution is set according to the strength of the magnetic field of different permanent magnets 104 and the models of different Hall sensors. No specific numerical value is limited here. Similarly, the specific number of multiple Hall sensors is not limited here.
[0049] Specifically, in this embodiment, the movable member 106 is cylindrical, and the permanent magnet 104 is disposed on the inner surface of the movable member 106. The permanent magnet 104 is disposed on the inner surface of the movable member 106 to avoid friction between the permanent magnet and the inner surface of the cigarette pipe body to hinder the displacement of the movable member.
[0050] Specifically, in this embodiment, the smoke exhaust pipe further includes an exhaust end 108, and a plurality of evenly spaced circular exhaust holes 102 are arranged around the exhaust end 108. The arrangement of the circular exhaust holes 102 is conducive to the exhaust pipe to discharge the exhaust gas generated by the gas water heater.
[0051] In another feasible embodiment, multiple rows of circular or elliptical exhaust holes that are evenly spaced are provided in the circumferential direction of the exhaust end 108 .
[0052] In another feasible embodiment, the movable part 106 also has a through hole for installing a signal generating device; the smoke pipe body 101 also has a through hole for installing a signal receiving device. The signal generating device is an infrared light emitting diode, and the signal receiving device is a plurality of infrared receivers. The infrared light emitting diode is arranged in the through hole of the movable part so as to be able to emit infrared rays outward; a plurality of infrared receivers are arranged in the through hole of the smoke pipe body so as to be able to receive the infrared rays emitted by the diode. The infrared light emitting diode moves with the movable part, and when passing through one of the infrared receivers, it receives the infrared rays and generates an electrical signal to transmit to the controller, and the controller determines the wind pressure level and controls the speed of the fan according to the wind pressure level.
[0053] In another feasible embodiment, the signal generating device may be a light emitting diode, and the signal receiving device may be a plurality of photoresistors. It should be noted that no matter what kind of sensor is used, as long as the wind pressure is used to drive the movable part to move so that the receiving device receives the signal from the signal generating device, it falls within the scope of the present embodiment.
[0054] Example 2
[0055] This embodiment discloses a gas water heater, which includes the exhaust pipe described in the embodiment, and also includes a controller and a fan, wherein the fan and the signal receiving device are electrically connected to the controller respectively. The method for the gas water heater to detect the wind pressure level and control the fan speed through the exhaust pipe is as described in Embodiment 1, which is not repeated here.
Claims
1. A smoke exhaust pipe, comprising a smoke exhaust pipe body, a signal generating device and a signal receiving device, characterized in that: The smoke exhaust pipe also includes a movable part and an elastic part. The movable part is arranged in the smoke pipe body and connected through the elastic part. The movable part is configured to be able to overcome the elastic force of the elastic part and displace under the action of external wind pressure; the signal generating device is arranged on the movable part, and the signal receiving device is arranged on the smoke pipe body. The signal receiving device can receive the signal of the signal generating device when the movable part undergoes a preset displacement.
2. The smoke exhaust pipe according to claim 1, characterized in that: The signal generating device is a permanent magnet, and the signal receiving device is a Hall sensor.
3. The smoke exhaust pipe according to claim 2, characterized in that: The Hall sensor is arranged on the outer surface of the cigarette pipe body.
4. The smoke exhaust pipe according to claim 2, characterized in that: There are a plurality of Hall sensors, and the plurality of Hall sensors are arranged at intervals along the axial direction of the smoke tube body.
5. The smoke exhaust pipe according to claim 4, characterized in that: The plurality of Hall sensors are evenly spaced and distributed.
6. The smoke exhaust pipe according to claim 2, characterized in that: The movable part is cylindrical, and the permanent magnet is arranged on the inner surface of the movable part.
7. The smoke exhaust pipe according to claim 1, characterized in that: The elastic member is a spring.
8. The smoke exhaust pipe according to claim 1, characterized in that: The smoke exhaust pipe also includes an exhaust end, and a plurality of circular exhaust holes evenly spaced and distributed are arranged in the circumference of the exhaust end.
9. A gas water heater, characterized in that: The gas water heater further comprises a smoke exhaust pipe as described in any one of claims 1-8.
10. The gas water heater according to claim 9, characterized in that: The gas water heater further comprises a controller and a fan, and the fan and the signal receiving device are electrically connected to the controller respectively.