Fire grate, burner, and gas water heater

Abstract

A fire grate includes a fire grate body and a flame stabilizer. The fire grate body has a main gas channel formed therein. A main gas outlet is formed at a top of the fire grate body and in communication with the main gas channel, and a communication opening is formed at a side of the fire grate body and in communication with the main gas channel. The flame stabilizer is disposed outside the fire grate body and forms an auxiliary gas channel together with the fire grate body. The auxiliary gas channel is in communication with the communication opening. The flame stabilizer also has an auxiliary gas outlet formed at a top of the flame stabilizer and in communication with the auxiliary gas channel.

What is claimed is: 
     
         1 . A fire grate comprising:
 a fire grate body having a main gas channel formed therein, a main gas outlet formed at a top of the fire grate body and in communication with the main gas channel, and a communication opening formed at a side of the fire grate body and in communication with the main gas channel; and   a flame stabilizer disposed outside the fire grate body and forming an auxiliary gas channel together with the fire grate body, the auxiliary gas channel being in communication with the communication opening, the flame stabilizer having an auxiliary gas outlet formed at a top of the flame stabilizer and in communication with the auxiliary gas channel.   
     
     
         2 . The fire grate according to  claim 1 , wherein:
 the flame stabilizer includes a connector connected to the fire grate body;   the communication opening is formed on a side of the fire grate body; and   the side of the fire grate body and the connector form the auxiliary gas channel, and the auxiliary gas outlet is formed at a top of the connector and in communication with the auxiliary gas channel.   
     
     
         3 . The fire grate according to  claim 2 , wherein the top of the connector is spaced apart from the side of the fire grate body. 
     
     
         4 . The fire grate according to  claim 2 , wherein:
 the connector is one of two first connectors arranged opposite to each other and connected to the fire body;   the flame stabilizer further includes a plurality of second connectors arranged at intervals in a longitudinal direction of the fire grate body, two ends of each of the plurality of second connectors being connected to tops of the two first connectors, respectively;   the flame stabilizer is sleeved on the fire grate body; and   the plurality of second connectors are connected to a top of the fire grate body and avoids the main gas outlet.   
     
     
         5 . The fire grate according to  claim 4 , wherein:
 the main gas outlet includes a plurality of fire holes arranged at intervals in the longitudinal direction of the fire grate body;   a partition is disposed between two adjacent ones of the plurality of fire holes; and   one of the plurality of second connectors is connected to the partition.   
     
     
         6 . The fire grate according to  claim 5 , wherein:
 the plurality of fire holes are a plurality of first fire holes;   the main gas outlet further includes a plurality of second fire holes formed in the partition; and   the plurality of second fire holes are arranged in a rectangular array or arranged at intervals in a transverse direction of the fire grate.   
     
     
         7 . The fire grate according to  claim 5 , further comprising:
 a combustion panel configured as a metal net structure and fixedly connected to the partition.   
     
     
         8 . The fire grate according to  claim 7 , wherein the combustion panel is disposed at a side of the partition facing away from the second connectors. 
     
     
         9 . The fire grate according to  claim 7 , wherein the combustion panel is disposed between the partition and the second connectors, and at least one of the second connectors is connected to the partition through the combustion panel. 
     
     
         10 . The fire grate according to  claim 7 , wherein the combustion panel is a multi-layer metal net structure integrally formed and bended into a plurality of layers. 
     
     
         11 . The fire grate according to  claim 7 , wherein the combustion panel includes a plurality of laminated layers of metal nets, and a buffer cavity is formed between two adjacent ones of the plurality of layers of metal nets. 
     
     
         12 . The fire grate according to  claim 1 , wherein:
 the communication opening is one of a plurality of communication openings formed at the side of the fire grate body and arranged at intervals in a longitudinal direction of the fire grate body; and   the auxiliary gas channel extends in the longitudinal direction of the fire grate body.   
     
     
         13 . A burner comprising:
 a fire grate including:
 a fire grate body having a main gas channel formed therein, a main gas outlet formed at a top of the fire grate body and in communication with the main gas channel, and a communication opening formed at a side of the fire grate body and in communication with the main gas channel; and 
 a flame stabilizer disposed outside the fire grate body and forming an auxiliary gas channel together with the fire grate body, the auxiliary gas channel being in communication with the communication opening, the flame stabilizer having an auxiliary gas outlet formed at a top of the flame stabilizer and in communication with the auxiliary gas channel. 
   
     
     
         14 . The burner according to  claim 13 , wherein:
 the flame stabilizer includes a connector connected to the fire grate body;   the communication opening is formed on a side of the fire grate body; and   the side of the fire grate body and the connector form the auxiliary gas channel, and the auxiliary gas outlet is formed at a top of the connector and in communication with the auxiliary gas channel.   
     
     
         15 . The burner according to  claim 14 , wherein the top of the connector is spaced apart from the side of the fire grate body. 
     
     
         16 . The burner according to  claim 14 , wherein:
 the connector is one of two first connectors arranged opposite to each other and connected to the fire body;   the flame stabilizer further includes a plurality of second connectors arranged at intervals in a longitudinal direction of the fire grate body, two ends of each of the plurality of second connectors being connected to tops of the two first connectors, respectively;   the flame stabilizer is sleeved on the fire grate body; and   the plurality of second connectors are connected to a top of the fire grate body and avoids the main gas outlet.   
     
     
         17 . The burner according to  claim 16 , wherein:
 the main gas outlet includes a plurality of fire holes arranged at intervals in the longitudinal direction of the fire grate body;   a partition is disposed between two adjacent ones of the plurality of fire holes; and   one of the plurality of second connectors is connected to the partition.   
     
     
         18 . The burner according to  claim 17 , wherein:
 the plurality of fire holes are a plurality of first fire holes;   the main gas outlet further includes a plurality of second fire holes formed in the partition; and   the plurality of second fire holes are arranged in a rectangular array or arranged at intervals in a transverse direction of the fire grate.   
     
     
         19 . The burner according to  claim 17 , wherein the fire grate further includes:
 a combustion panel configured as a metal net structure and fixedly connected to the partition.   
     
     
         20 . The burner according to  claim 19 , wherein the combustion panel is disposed at a side of the partition facing away from the second connectors.