Patent Application
20250137688
The present disclosure relates to the technical field of gas equipment, and particularly to a baffle device for a flue and a gas water heating device.
Before the ignition operation of a gas furnace, it is necessary to ensure that a flue baffle plate is in an open state, and after heating, the flue baffle plate should be closed to reduce a heat loss. At present, a microswitch is usually configured to detect the open/closed state of the flue baffle plate. However, the microswitch will subject to a mechanical abrasion after long-term use. After the mechanical abrasion is occurred, the reliability for the microswitch to detect the open/closed state of the flue baffle plate is decreased, and the open/closed state of the flue baffle plate cannot be accurately and reliably detected, such that the control function of the flue baffle plate of the gas furnace is failed, resulting in an ignition failure and a heat loss.
An objective of the present disclosure is to provide a baffle device for a flue and a gas water heating device, so as to reliably detect a position state of the baffle device in the flue.
The above objective of the present disclosure can be achieved by adopting the following technical solutions.
The present disclosure provides a baffle device for a flue, the baffle device comprising a baffle plate, a driving mechanism and a detecting mechanism;
In a preferred embodiment, the blocking member comprises a first blocking member and a second blocking member disposed along a length direction of the rotating shaft, the photoelectric sensor comprises a first photoelectric sensor and a second photoelectric sensor disposed along the length direction of the rotating shaft, wherein the first photoelectric sensor can detect the first blocking member during the rotation of the rotating shaft, and the second photoelectric sensor can detect the second blocking member during the rotation of the rotating shaft, and the first blocking member and the second blocking member are spaced apart by a preset angle in a circumferential direction of the rotating shaft.
In a preferred embodiment, the first photoelectric sensor and the second photoelectric sensor have a circuit board, and the light emitting portions and the light receiving portions of the first photoelectric sensor and the second photoelectric sensor are located on surfaces on a same side of the circuit board.
In a preferred embodiment, the blocking member is disposed on the rotating shaft, and the photoelectric sensor is disposed on the supporting member.
In a preferred embodiment, a gap is provided between the light emitting portion and the light receiving portion; and the blocking member is a blocking sheet, which can pass through the gap during the rotation of the rotating shaft.
In a preferred embodiment, during the rotation of the rotating shaft, the blocking member and the photoelectric sensor can move relatively to positions where both the light emitting portion and the light receiving portion are opposite to the blocking member, and when both the light emitting portion and the light receiving portion are opposite to the blocking member, the light emitted by the light emitting portion can be reflected to the light receiving portion by the blocking member.
In a preferred embodiment, the driving source comprises a motor which drives the baffle plate to rotate through the rotating shaft; and the supporting member comprises a shell that covers the rotating shaft.
In a preferred embodiment, the shell has an opening, through which the light emitting portion and the light receiving portion extend to a space between an inner surface of the shell and the rotating shaft.
In a preferred embodiment, the photoelectric sensor has a box and a circuit board, the light receiving portion and the light emitting portion are both disposed on the circuit board, the circuit board is fixed to the box, the box is mounted on an outer surface of the shell, and both the light receiving portion and the light emitting portion extend from the interior of the box to a space between the inner surface of the shell and the rotating shaft.
In a preferred embodiment, the blocking member comprises a first blocking member and a second blocking member which are disposed at an interval in a circumferential direction of the rotating shaft, the photoelectric sensor comprises a first photoelectric sensor and a second photoelectric sensor which are disposed at an interval in the circumferential direction of the rotating shaft, and the first photoelectric sensor can detect the first blocking member during the rotation of the rotating shaft, and the second photoelectric sensor can detect the second blocking member after the rotating shaft further rotates by a preset angle.
In a preferred embodiment, the preset angle is 90°.
In a preferred embodiment, the baffle plate comprises a first baffle sheet and a second baffle sheet which are connected to each other and disposed in parallel or substantially in parallel.
The present disclosure provides a gas water heating device, comprising the baffle device for a flue as described above;
In a preferred embodiment, the detecting mechanism is disposed on the housing through the supporting member; or, both the driving mechanism and the detecting mechanism are disposed on the housing through the supporting member.
In a preferred embodiment, an inner surface of the flue is provided with a first limiting portion and a second limiting portion which are opposite to each other, and the first limiting portion and the second limiting portion are staggered in a length direction of the flue; the baffle plate comprises a first baffle sheet and a second baffle sheet which are connected to each other and disposed in parallel or substantially in parallel; a lower surface of the first baffle sheet is configured to cooperate with an upper surface of the first limiting portion in a sealing manner, and an upper surface of the second baffle sheet is configured to cooperate with a lower surface of the second limiting portion in a sealing manner, so that the baffle plate blocks the flue gas in the flue.
In a preferred embodiment, the gas water heating device has a control panel, the photoelectric sensor is electrically connected to the control panel, and an igniter of the burning device is electrically connected to the control panel; and when the rotating shaft drives the baffle plate to rotate to a position of opening the flue, the photoelectric sensor can detect the blocking member, so that the control panel can control the igniter to ignite through a signal generated by the photoelectric sensor.
The present disclosure has the following characteristics and advantages:
The rotating shaft is driven to rotate by the driving source, and causes the baffle plate to rotate together, so as to control the baffle plate to conduct or block the flue gas in the flue. One of the blocking member and the photoelectric sensor is disposed on the rotating shaft, and the other is disposed on the supporting member, so that the one of the blocking member and the photoelectric sensor rotates along with the rotating shaft and the baffle plate, and the other does not rotate along therewith. Thus, the blocking member and the photoelectric sensor move relative to each other during the rotation of the rotating shaft and the baffle plate, so that when the baffle plate rotates from a position of blocking the flue gas in the flue to a position of conducting the flue gas in the flue, the relative positions between the blocking member and the photoelectric sensor are changed accordingly. When the blocking member and the photoelectric sensor reach preset relative positions, the blocking member makes the light not be effectively received or effectively received by the light receiving portion, which indicates that the baffle plate rotates to a preset position that may be a position of blocking or conducting the flue gas in the flue, so as to accurately and reliably detect whether the flue is conducted, or blocked by the baffle plate.
The photoelectric sensor in the present disclosure does not need to be in direct contact with the blocking member, and does not produce a mechanical abrasion due to long-term working, which can ensure a long-term stable operation, thereby improving the reliability and prolonging the service life.
The baffle device for a flue in the present disclosure may be applied to a gas water heating device, which controls whether to introduce gas and ignite according to the conduction state of the flue detected by the detecting mechanism, thereby improving the safety and reliability of ignition and being conducive to ensuring the reliable operation of the gas water heating device.
In order to explain the technical solutions in the embodiments of the present disclosure more clearly, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings involved in the following description only illustrate some embodiments of the present disclosure, and those of ordinary skill in the art can obtain other drawings from these drawings without paying any creative effort.
Hereinafter, the technical solutions in the embodiments of the present disclosure will be clearly and completely described with reference to the drawings for the embodiments of the present disclosure. Obviously, those described embodiments are only a part, rather than all, of the embodiments of the present disclosure. Based on the embodiments of the present disclosure, any other embodiment obtained by those of ordinary skilled in the art without paying any creative effort should fall within the protection scope of the present disclosure.
The present disclosure provides a baffle device for a flue. As illustrated in
The rotating shaft 22 is driven by the driving source 21 to rotate, and causes the baffle plate 10 to rotate together, so as to control the baffle plate 10 to conduct or block the flue gas in the flue 80. One of the blocking member 40 and the photoelectric sensor 50 is disposed on the rotating shaft 22, and the other is disposed on the supporting member 70, so that one of the blocking member 40 and the photoelectric sensor 50 rotates along with the rotating shaft 22 and the baffle plate 10, and the other does not rotate along therewith. Thus, the blocking member 40 and the photoelectric sensor 50 move relative to each other during the rotation of the rotating shaft 22 and the baffle plate 10, so that when the baffle plate 10 rotates from a position of blocking the flue gas in the flue 80 to a position of conducting the flue gas in the flue 80, the relative positions of the blocking member 40 and the photoelectric sensor 50 are changed accordingly. When the blocking member 40 and the photoelectric sensor 50 reach preset relative positions, the blocking member 40 makes the light not be effectively received or effectively received by the light receiving portion 52, which indicates that the baffle plate 10 rotates to a preset position that may be a position of blocking or conducting the flue gas in the flue 80, so as to accurately and reliably detect whether the flue 80 is conducted, or blocked by the baffle plate 10.
The photoelectric sensor 50 in the present disclosure does not need to be in direct contact with the blocking member 40, and does not produce a mechanical abrasion due to long-term working, which can ensure a long-term stable operation, thereby improving the reliability and prolonging the service life.
The baffle device for the flue in the present disclosure may be applied to a gas water heating device, which controls whether to introduce gas and ignite according to the conduction state of the flue 80 detected by the detecting mechanism, thereby improving the safety and reliability of ignition and being conducive to ensuring the reliable operation of the gas water heating device.
In an embodiment, as illustrated in
When the light receiving portion 52 receives the light emitted by the light emitting portion 51 with sufficient intensity, it is an effective reception. When the blocking sheet 401 moves relatively to block all or most of the light emitted by the light emitting portion 51, the light receiving portion 52 cannot receive the light or can only receive a small part of the light. At this time, the intensity of the light received by the light receiving portion 52 is insufficient, so that the light is not effectively received by the light receiving portion 52. That is, it means that the blocking sheet 401 and the photoelectric sensor 50 have reached preset relative positions, and the baffle plate 10 has rotated to a preset position, i.e., the baffle plate 10 is in a position of blocking or conducting the flue gas in the flue 80. When just relatively moving into the gap 53, the blocking sheet 401 blocks a part of the light emitted by the light emitting portion 51, and the light receiving portion 52 can still receive a part of the light. If the light received by the light receiving portion 52 still has sufficient intensity, the light is still effectively received, and at this time, the position of the baffle plate 10 is not considered to have reached the preset position. Therefore, only when the blocking sheet 401 blocks the light emitted by the light emitting portion 51 with sufficient intensity so that the light is not effectively received by the light receiving portion 52, it can be considered that the baffle plate 10 has reached the position of blocking or conducting the flue gas in the flue 80 and the detection accuracy is improved.
In another embodiment, during the rotation of the rotating shaft 22, the blocking member 40 and the photoelectric sensor 50 can move relatively to the positions where both the light emitting portion 51 and the light receiving portion 52 are opposite to the blocking member 40, and when both the light emitting portion 51 and the light receiving portion 52 are opposite to the blocking member 40, the light emitted by the light emitting portion 51 can be reflected to the light receiving portion 52 by the blocking member 40. The light receiving portion 52 and the light emitting portion 51 may be located on a same side of the blocking sheet 401, and the blocking sheet 40 may move to block the light emitted by the light emitting portion 51 and reflect the blocked light to the light receiving portion 52, so that the light receiving portion 52 can receive the light emitted by the light emitting portion 51. When the light emitted by the light emitting portion 51 is not blocked by the blocking sheet 401, no light is received by the light receiving portion 52.
When the light receiving portion 52 receives the light emitted by the light emitting portion 51 with sufficient intensity, it is an effective reception. When the blocking sheet 401 moves relatively to reflect all or most of the light emitted by the light emitting portion 51 to the light receiving portion 52, the light receiving portion 52 receives light with sufficient intensity, which means that the blocking sheet 401 and the photoelectric sensor 50 have reached preset relative positions, and the baffle plate 10 has rotated to a preset position, i.e., the baffle plate 10 is in a position of blocking or conducting the flue gas in the flue 80.
When just relatively moving to a position close to the light receiving portion 52 and the light emitting portion 51, the blocking sheet 401 can reflect a small part of the light emitted by the light emitting portion 51 to the light receiving portion 52. However, although the light receiving portion 52 can receive some light, if the intensity of the received light is insufficient, it is not an effective reception, and at that time, the position of the baffle plate 10 is not considered as the preset position. Therefore, only when the blocking sheet 401 reflects the light emitted by the light emitting portion 51 with sufficient intensity to the light receiving portion 52 so that the light is effectively received by the light receiving portion 52, it can be considered that the baffle plate 10 has reached the position of blocking or conducting the flue gas in the flue 80 and the detection accuracy is improved.
The intensity of the light when it is effectively received by the light receiving unit 52 may be in a range greater than an intensity value, which may be determined by the performance of the light receiving unit 52 itself or set by a computer program. A signal sent by the light receiving portion 52 may be a signal indicating whether the light is effectively received, that is, there are only two signal values of “yes” and “no”, which reduces the data amount of signal transmission and signal processing, and is beneficial to improving the working efficiency of the detecting mechanism 30.
In an embodiment, as illustrated in
The first photoelectric sensor 61 and the second photoelectric sensor 62 are respectively configured to detect whether the baffle plate 10 reaches the position of blocking or conducting the flue gas in the flue 80. Specifically, when the baffle plate 10 rotates to the position of blocking the flue gas in the flue 80, the first photoelectric sensor 61 can detect the first blocking member 41; and when the baffle plate 10 rotates to the position of conducting the flue gas in the flue 80, the second photoelectric sensor 62 can detect the second blocking member 42. The first photoelectric sensor 61 cooperates with the first blocking member 41 and the second photoelectric sensor 62 cooperates with the second blocking member 42, thereby realizing the dual position detection for closing and opening the flue 80 by the baffle plate 10. The signal transmitted by the first photoelectric sensor 61 may only include two signal values of “yes” and “no”, and the signal transmitted by the second photoelectric sensor 62 may also only include two signal values of “yes” and “no”, which is beneficial to accurately detecting whether the flue 80 is opened or closed, thereby improving the detection reliability and reducing the amount of data to be transmitted and processed.
As illustrated in
The first blocking member 41 and the second blocking member 42 are disposed along the length direction of the rotating shaft 22, and the first photoelectric sensor 61 and the second photoelectric sensor 62 are also disposed along the length direction of the rotating shaft 22, that is, the positions of the first blocking member 41 and the second blocking member 42 are distributed along the length direction of the rotating shaft 22, and the positions of the first photoelectric sensor 61 and the second photoelectric sensor 62 are correspondingly distributed along the length direction of the rotating shaft 22. The blocking member 40 and the photoelectric sensor 50 may be mounted as follows: the first blocking member 41 and the second blocking member 42 are mounted on the rotating shaft 22, and the first photoelectric sensor 61 and the second photoelectric sensor 62 are mounted on the supporting member 70. Alternatively, the first photoelectric sensor 61 and the second photoelectric sensor 62 are mounted on the rotating shaft 22, and the first blocking member 41 and the second blocking member 42 are mounted on the supporting member 70. Alternatively, the first blocking member 41 and the second photoelectric sensor 62 are mounted on the rotating shaft 22, and the first photoelectric sensor 61 and the second blocking member 42 are mounted on the supporting member 70. Alternatively, the first photoelectric sensor 61 and the second blocking member 42 are mounted on the rotating shaft 22, and the first blocking member 41 and the second photoelectric sensor 62 are mounted on the supporting member 70.
Further, the first photoelectric sensor 61 and the second photoelectric sensor 62 have a circuit board 54, and the light emitting portions 51 and the light receiving portions 52 of the first photoelectric sensor 61 and the second photoelectric sensor 62 are located on surfaces on a same side of the circuit board 54. Since the first blocking member 41 and the second blocking member 42 are spaced apart by a preset angle in the circumferential direction of the rotating shaft 22, when the rotating shaft 22 rotates by the preset angle after the first photoelectric sensor 61 detects the first blocking member 41, the second photoelectric sensor 62 can detect the second photoelectric sensor 62. As illustrated in
Preferably, the light emitting portions 51 of the first photoelectric sensor 61 and the second photoelectric sensor 62 are distributed along a line parallel to the rotating shaft 22, and the light receiving portions 52 of the first photoelectric sensor 61 and the second photoelectric sensor 62 are also distributed along a line parallel to the rotating shaft 22. When there is a gap 53 between the light emitting portion 51 and the light receiving portion 52 of the first photoelectric sensor 61, and there is also a gap 53 between the light emitting portion 51 and the light receiving portion 52 of the second photoelectric sensor 62, as illustrated in
The first photoelectric sensor 61 and the second photoelectric sensor 62 may each have a circuit board 54, or may share a same circuit board 54. In a case where the first photoelectric sensor 61 and the second photoelectric sensor 62 each have a circuit board 54, it is preferable that the circuit board 54 of the first photoelectric sensor 61 and the circuit board 54 of the second photoelectric sensor 62 are parallel to each other or in a same plane.
The preset angle may be determined according to a rotation angle of the baffle plate 10 from a position of closing the flue 80 to a position of opening the flue 80. Preferably, the preset angle is 90°, so that when the rotating shaft 22 rotates by 90° after the first photoelectric sensor 61 detects the first blocking member 41, the second photoelectric sensor 62 can detect the second photoelectric sensor 62, and then an included angle between the position of opening the flue 80 and the position of closing the flue 80 by the baffle plate 10 is set to 90°. When the flue 80 is closed, the baffle plate 10 is approximately perpendicular to a longitudinal direction of the flue 80, and when the flue 80 is opened, the baffle plate 10 is approximately parallel to the longitudinal direction of the flue 80, which is beneficial to reducing the blocking of the flue gas in the flue 80 by the baffle plate 10, and ensuring the smoothness of the flow of the flue gas when the flue 80 is opened.
In an embodiment, as illustrated in
The driving source 21 in the driving mechanism 20 may be driven electrically, pneumatically, hydraulically or manually. Specifically, the driving source 21 may include a motor 211, an air cylinder or a hydraulic cylinder; the driving source 21 may also be a handle, which is powered manually. The rotating shaft 22 and the driving source 21 may be in direct contact or non-contact connection. For example, a rotating member of the driving source 21 may drive the rotating shaft 22 by a magnetic force, wherein the rotating member of the driving source 21 is spaced apart from the rotating shaft 22, and when the rotating member of the driving source 21 rotates, the rotating shaft 22 rotates together under the action of the magnetic force. In an embodiment, the rotating shaft 22 and the rotating member of the driving source 21 may be an integrated structure, and the rotating member of the driving source 21 is used as the rotating shaft 22.
The baffle plate 10 and the rotating shaft 22 may be in direct contact or non-contact connection. For example, the rotating shaft 22 may drive the baffle plate 10 by a magnetic force, wherein the baffle plate 10 is spaced apart from the rotating shaft 22, and when the rotating shaft 22 rotates, the baffle plate 10 rotates together under the action of the magnetic force. In an embodiment, the rotating shaft 22 and the baffle plate 10 may be an integrated structure.
In an embodiment, as illustrated in
The rotating shaft 22 and the supporting member 70 are disposed at a preset distance, so that the rotating shaft 22 and the supporting member 70 are independent from and movable to each other. In an embodiment, the supporting member 70 includes a shell 71 that covers the rotating shaft 22. The shell 71 supports the photoelectric sensor 50 on the one hand, and protects the rotating shaft 22 and the blocking member 40 on the other hand. The driving mechanism 20 may also be supported by a shell 71, and specifically, the rotating shaft 22 may be mounted in the shell 71 through a bearing. As illustrated in
As illustrated in
Further, the photoelectric sensor 50 has a box 55 and a circuit board 54. The light receiving portion 52 and the light emitting portion 51 are both disposed on the circuit board 54 which is fixed to the box 55. The box 55 is mounted on an outer surface of the shell 71, and both the light receiving portion 52 and the light emitting portion 51 extend from the interior of the box 55 to a space between the inner surface of the shell 71 and the rotating shaft 22. The box 55 carries and protects the circuit board 54, the light receiving portion 52 and the light emitting portion 51. The light receiving portion 52 and the light emitting portion 51 extend to a space between the inner surface of the shell 71 and the rotating shaft 22 to cooperate with the blocking member 40 to realize a detection. Most of the photoelectric sensor 50 is located outside the shell 71, which is beneficial to reducing the size of the shell 71. The circuit board 54, the light receiving portion 52 and the light emitting portion 51 are integrated into the box 55, and the assembly of the photoelectric sensor 50 can be completed just by mounting the box 55 on the shell 71, which is convenient for the assembly and disassembly of the photoelectric sensor 50, thereby facilitating the maintenance and service. As illustrated in
In another embodiment (not illustrated), the blocking member 40 includes a first blocking member 41 and a second blocking member 42 disposed at an interval in the circumferential direction of the rotating shaft 22, and the photoelectric sensor 50 includes a first photoelectric sensor 61 and a second photoelectric sensor 62 disposed at an interval in the circumferential direction of the rotating shaft 22. The first photoelectric sensor 61 can detect the first blocking member 41 during the rotation of the rotating shaft 22, and the second photoelectric sensor 62 can detect the second blocking member 42 after the rotating shaft 22 further rotates by a preset angle. The first blocking member 41 and the second blocking member 42 may be overlapped in the length direction of the rotating shaft 22. In the circumferential direction of the rotating shaft 22, a difference between an angle between the first photoelectric sensor 61 and the second photoelectric sensor 62 and an angle between the first blocking member 41 and the second blocking member 42 is equal to the preset angle, so that when the first photoelectric sensor 61 detects the first blocking member 41, the second photoelectric sensor 62 and the second blocking member 42 are still spaced apart by the preset angle, and the second photoelectric sensor 62 can detect the second blocking member 42 after the rotating shaft 22 further rotates by the preset angle, thereby realizing the dual position detection for closing and opening the flue 80 by the baffle plate 10. Preferably, the preset angle is 90°, which is beneficial to reducing the blocking of the flue gas in the flue 80 when the baffle plate 10 opens the flue 80 and ensuring the smoothness of the flow of the flue gas in the flue 80.
In an embodiment, the baffle plate 10 includes a first baffle sheet 11 and a second baffle sheet 12 which are connected to each other and disposed in parallel or substantially in parallel. As illustrated in
The size of the first baffle sheet 11 may be the same as or different from that of the second baffle sheet 12. The rotating shaft 22 may be connected to the first baffle sheet 11 or the second baffle sheet 12. In another embodiment, the first baffle sheet 11 and the second baffle sheet 12 are connected through an inclined plate 13 to which the rotating shaft 22 is connected. As illustrated in
The present disclosure provides a gas water heating device, which includes the baffle device for the flue as described above. As illustrated in
The air outside the housing 91 enters the burning device 92 through the flue 80, and the flue gas generated by the burning device 92 is discharged outside the housing 91 through the flue 80. The driving mechanism 20 drives the baffle plate 10 to rotate, thereby controlling the baffle plate 10 to open or close the flue 80. Before the ignition of the burning device 92, the driving mechanism 20 drives the baffle plate 10 to rotate to a position of opening the flue 80, so as to provide conditions for the ignition and burning of the burning device 92. After the burning device 92 stops burning, the driving mechanism 20 drives the baffle plate 10 to rotate to a position of closing the flue 80, so as to reduce the outward heat loss from the housing 91 and save energy. The detecting mechanism 30 can accurately and reliably detect whether the flue 80 is opened or closed, and the gas water heating device controls whether to introduce gas and ignite according to the detected conduction state of the flue 80, thereby improving the safety and reliability of ignition and being conducive to ensuring the reliable operation of the gas water heating device.
Through verification, it is found that when a highest temperature in the flue 80 exceeds 300° C., the temperature at the photoelectric sensor 50 may be maintained below 80° C., which ensures the stable operation of the detecting mechanism 30. The flue 80 may be integrated with the housing 91, or may be a tubular structure connected to the housing 91. In an embodiment, as illustrated in
The supporting member 70 may be disposed on the housing 91. In an embodiment, the detecting mechanism 30 is disposed on the housing 91 through the supporting member 70. Specifically, one of the blocking member 40 and the photoelectric sensor 50 in the detecting mechanism 30 is mounted on the supporting member 70, and the other is disposed on the rotating shaft 22. In an embodiment, the driving mechanism 20 is also disposed on the housing 91 through the supporting member 70, and the driving source 21 or the rotating shaft 22 in the driving mechanism 20 may be mounted on the supporting member 70. Specifically, the rotating shaft 22 may be mounted on the supporting member 70 through a bearing, or the driving source 21 may be mounted on the supporting member 70 through a flange.
As illustrated in
In an embodiment, an inner surface of the flue 80 is provided with a first limiting portion 81 and a second limiting portion 82 which are opposite to each other. The first limiting portion 81 and the second limiting portion 82 are staggered in a length direction of the flue 80. The baffle plate 10 includes a first baffle sheet 11 and a second baffle sheet 12 which are connected to each other and disposed in parallel or substantially in parallel; as illustrated in
In an embodiment, the gas water heating device has a control panel (not illustrated), the photoelectric sensor 50 is electrically connected to the control panel, and an igniter (not illustrated) 10 of the burning device 92 is electrically connected to the control panel. When the rotating shaft 22 drives the baffle plate 10 to rotate to a position of opening the flue 80, the photoelectric sensor 50 can detect the blocking member 40, so that the control panel can control the igniter to ignite through a signal generated by the photoelectric sensor 50.
When the baffle plate 10 rotates to the position of opening the flue 80, the photoelectric sensor 50 detects the baffle plate 40 and transmits a signal indicating that the flue 80 has been opened to the control panel, and the control panel controls the igniter to ignite according to the signal indicating that the flue 80 has been opened, so that the igniter will not ignite unless the controller receives the signal indicating that the flue 80 has been opened, thereby ensuring that the flue 80 is in an open state when ignition. The air outside the casing 91 can enter the burning device 92 through the flue 80, which is beneficial to ensuring the success rate and reliability of the ignition, and enabling the flue gas generated by burning to be discharged smoothly through the flue 80, thereby avoiding the opening of a gas opening valve that introduces the gas and the ignition when the flue 80 is not opened, and being beneficial to ensuring the safe and reliable operation of the gas water heating device.
In an embodiment, the blocking member 40 includes a first blocking member 41 and a second blocking member 42, and the photoelectric sensor 50 includes a first photoelectric sensor 61 and a second photoelectric sensor 62. The first photoelectric sensor 61 cooperates with the first blocking member 41 to detect whether the baffle plate 10 closes the flue 80, and the second photoelectric sensor 62 cooperates with the second blocking member 42 to detect whether the baffle plate 10 opens the flue 80, which not only ensures that the flue 80 is in an open state when ignition, but also accurately and reliably detects whether the flue 80 is closed after the burning device 92 stops burning, so as to reduce the occurrence of a situation that the heat in the housing 91 is dissipated to the outside through the flue 80 after the burning.
Those described above are just several embodiments of the present disclosure, and those skilled in the art can make various changes or variants to the embodiments of the present disclosure according to the content disclosed in the application document without departing from the spirit and scope of the present disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202322883983.5 | Oct 2023 | CN | national |
