Adjusting device for a gas cooking appliance and gas cooking appliance

Abstract

An adjusting device for a gas cooking appliance for adjusting the gas flow rate includes a distribution inlet conduit in fluid communication with a gas supply line of the gas cooking appliance, and a distribution outlet conduit in fluid communication with a gas burner line of the gas cooking appliance. A fluid communication can be established between the distribution inlet and outlet conduits via a plurality of parallel flow paths. A flow restrictor and a closing means that is operable by an electric or electronic control system of the gas cooking appliance are arranged in series in each individual flow path.

What is claimed is:  
     
         1 . An adjusting device for a gas cooking appliance for adjusting a gas flow rate, the adjusting device comprising: 
 a main body including: 
 a distribution inlet conduit in fluid communication with a gas supply line of the gas cooking appliance;  
 a distribution outlet conduit in fluid communication with a gas burner line of the gas cooking appliance;  
 a first connecting conduit configured to establish fluid communication between the distribution inlet conduit and the distribution outlet conduit; and  
 a second connecting conduit configured to establish fluid communication between the distribution inlet conduit and the distribution outlet conduit;  
   a first flow restrictor connected in the first connecting conduit;    a second flow restrictor connected in the second connecting conduit;    a first closing device operable by an electric or electronic control system of the gas cooking appliance and connected in series with the first flow restrictor in the first connecting conduit; and    a second closing device operable by the electric or electronic control system of the gas cooking appliance and connected in series with the second flow restrictor in the second connecting conduit.    
     
     
         2 . The adjusting device as recited in  claim 1  further comprising: 
 at least one third connecting conduit configured to establish fluid communication between the distribution inlet conduit and the distribution outlet conduit;  
 at least one third flow restrictor connected in the at least one third connecting conduit; and  
 at least one third closing device operable by the electric or electronic control system of the gas cooking appliance and connected in series with the at least one third flow restrictor in the at least one third connecting conduit.  
 
     
     
         3 . The adjusting device as recited in  claim 1  wherein the main body is formed as a single piece.  
     
     
         4 . The adjusting device as recited in  claim 1  wherein the main body includes a cast material.  
     
     
         5 . The adjusting device as recited in  claim 1  wherein at least one of the distribution inlet conduit, the distribution outlet conduit, the first connecting conduit, and the second connecting conduit has a circular cross-section.  
     
     
         6 . The adjusting device as recited in  claim 1  wherein: 
 the main body includes an opening having an internal thread; and  
 at least one of the first and second closing devices includes an external thread configured to engage the internal thread when the adjusting device is in the assembled state.  
 
     
     
         7 . The adjusting device as recited in  claim 1  wherein at least one of the first and second flow restrictors is adjustable.  
     
     
         8 . The adjusting device as recited in  claim 7  wherein: 
 the first connecting conduit includes an internal thread; and  
 the first flow restrictor includes an adjusting screw configured to engage the internal thread when the adjusting device is in an assembled state.  
 
     
     
         9 . The adjusting device as recited in  claim 1  wherein: 
 the first connecting conduit includes a blind hole; and  
 the first flow restrictor is configured to engage the blind hole from a free end thereof when the adjusting device is in an assembled state.  
 
     
     
         10 . The adjusting device as recited in  claim 1  wherein the first connecting conduit includes a first and a second conduit section, the first conduit section being in fluid communication with the distribution inlet conduit and the second conduit section being in fluid communication with the distribution outlet conduit.  
     
     
         11 . The adjusting device as recited in  claim 10  wherein the first and second conduit sections each include a respective blind hole, respective free ends of the blind holes being configured so as to establish fluid communication between the free ends via the first closing device when the adjusting device is in an assembled state.  
     
     
         12 . The adjusting device as recited in  claim 10  wherein: 
 the first conduit section includes a through-hole; and  
 the second conduit section includes a blind hole;  
 the through-hole and the blind hole being configured so as to establish fluid communication between a free end of the through-hole and a free end of the blind hole via the first closing device when the adjusting device is in an assembled state  
 
     
     
         13 . A gas cooking appliance comprising: 
 a gas supply line;    a main body including: 
 a distribution inlet conduit in fluid communication with a gas supply line of the gas cooking appliance;  
 a distribution outlet conduit in fluid communication with a gas burner line of the gas cooking appliance;  
 a first connecting conduit configured to establish fluid communication between the distribution inlet conduit and the distribution outlet conduit; and  
 a second connecting conduit configured to establish fluid communication between the distribution inlet conduit and the distribution outlet conduit;  
   a first flow restrictor connected in the first connecting conduit;    a second flow restrictor connected in the second connecting conduit;    a first closing device operable by an electric or electronic control system of the gas cooking appliance and connected in series with the first flow restrictor in the first connecting conduit;    a second closing device operable by the electric or electronic control system of the gas cooking appliance and connected in series with the second flow restrictor in the second connecting conduit;    a gas burner line connected to a gas burner; and    an electric or electronic control system by configured to operate the first and second closing devices.    
     
     
         14 . The gas cooking appliance as recited in  claim 13  wherein the adjusting device further includes: 
 at least one third connecting conduit configured to establish fluid communication between the distribution inlet conduit and the distribution outlet conduit;  
 at least one third flow restrictor connected in the at least one third connecting conduit; and  
 at least one third closing device operable by an electric or electronic control system of the gas cooking appliance and connected in series with the at least one third flow restrictor in the at least one third connecting conduit.  
 
     
     
         15 . The gas cooking appliance as recited in  claim 13  wherein the main body is formed as a single piece.  
     
     
         16 . The gas cooking appliance as recited in  claim 13  wherein the main body includes a cast material.  
     
     
         17 . The gas cooking appliance as recited in  claim 13  wherein at least one of the distribution inlet conduit, the distribution outlet conduit, the first connecting conduit, and the second connecting conduit has a circular cross-section.  
     
     
         18 . The gas cooking appliance as recited in  claim 13  wherein: 
 the main body includes an opening having an internal thread; and  
 at least one of the first and second closing devices includes an external thread configured to engage the internal thread when the adjusting device is in the assembled state.  
 
     
     
         19 . The gas cooking appliance as recited in  claim 13  wherein at least one of the first and second flow restrictors is adjustable.  
     
     
         20 . The gas cooking appliance as recited in  claim 19  wherein: 
 the first connecting conduit includes an internal thread; and  
 the first flow restrictor includes an adjusting screw configured to engage the internal thread when the adjusting device is in an assembled state.