Baffle device for flue and gas water heating device

Abstract

A baffle device for a flue and a gas water heating device includes a baffle plate, a driving mechanism and a detecting mechanism. The driving mechanism is configured to rotate the baffle in the flue. The detecting mechanism includes a photoelectric sensor to detect the position state of the baffle device in the flue.

1 . A baffle device for a flue, wherein the baffle device comprises a baffle plate, a driving mechanism and a detecting mechanism;
 the baffle plate is configured to be disposed in a flue to conduct or block flue gas in the flue;   the driving mechanism is configured to drive the baffle plate to rotate, and comprises a driving source and a rotating shaft, wherein one end of the rotating shaft is configured to be driven by the driving source and the other end of the rotating shaft is configured to drive the baffle plate to rotate;   the detecting mechanism comprises a blocking member and a photoelectric sensor, the photoelectric sensor comprises a light emitting portion and a light receiving portion, and the blocking member is configured to block light emitted by the light emitting portion so that the light is effectively received or not effectively received by the light receiving portion;   one of the blocking member and the photoelectric sensor is disposed on the rotating shaft, there is provided with a supporting member at a preset distance from the rotating shaft, and the supporting member is configured to support the other of the blocking member and the photoelectric sensor.   
     
     
         2 . The baffle device for a flue according to  claim 1 , wherein,
 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.   
     
     
         3 . The baffle device for a flue according to  claim 2 , wherein,
 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.   
     
     
         4 . The baffle device for a flue according to  claim 1 , wherein,
 the blocking member is disposed on the rotating shaft, and the photoelectric sensor is disposed on the supporting member.   
     
     
         5 . The baffle device for a flue according to  claim 1 , wherein,
 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.   
     
     
         6 . The baffle device for a flue according to  claim 1 , wherein,
 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.   
     
     
         7 . The baffle device for a flue according to  claim 1 , wherein,
 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.   
     
     
         8 . The baffle device for a flue according to  claim 7 , wherein,
 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.   
     
     
         9 . The baffle device for a flue according to  claim 8 , wherein,
 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.   
     
     
         10 . The baffle device for a flue according to  claim 1 , wherein,
 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.   
     
     
         11 . The baffle device for a flue according to  claim 10 , wherein, the preset angle is 90°. 
     
     
         12 . The baffle device for a flue according to  claim 1 , wherein,
 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.   
     
     
         13 . A gas water heating device, comprising the baffle device for a flue according to  claim 1 ; the gas water heating device further comprises a housing in which a burning device is disposed, the housing is provided with a flue configured to discharge flue gas generated by the burning device outside the housing, the baffle plate is disposed in the flue, and the driving mechanism and the detecting mechanism are disposed outside the flue. 
     
     
         14 . The gas water heating device according to  claim 13 , wherein,
 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.   
     
     
         15 . The gas water heating device according to  claim 13 , wherein,
 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.   
     
     
         16 . The gas water heating device according to  claim 13 , wherein,
 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.   
     
     
         17 . The baffle device for a flue according to  claim 2 , wherein, the preset angle is 90°.