Patent Publication Number: US-2022221147-A1

Title: Burner of gas stove

Description:
BACKGROUND OF THE INVENTION 
     Technical Field 
     The present invention is related to a gas stove, and more particularly to a burner of a gas stove. 
     Description of Related Art 
       FIG. 1  depicts a conventional burner of a gas stove. The burner includes an outer ring member  1 , an inner ring member  2 , a first long tube  3 , and a second long tube  4 . 
     When gas and air pass through the first long tube  3  or the second long tube  4 , the gas and the air mix together inside the first long tube  3  or inside the second long tube  4 . The gas-air mixture flow passes through the first long tube  3  into the outer ring member  1  or through the second long tube  4  into the inner ring member  2  respectively. Then, the gas-air mixture flow is ejected from a plurality of flame holes  5  of the outer ring member  1  or those of the inner ring member  2  respectively. With an igniter (not shown), flames are generated by igniting and combusting the gas-air mixture flow. 
     However, to uniformly mix the gas with the air, a length of the first long tube  3  and that of the second long tube  4  are set to be at least  1  time longer than a diameter of the outer ring member  1 , resulting in a bulky size of the conventional burner and inconvenience of package and shipping. Moreover, the burner with bulky size cannot be properly mounted on a smaller cooktop. 
     How to reduce the size of the conventional burner of the gas stove and achieve the effect of uniformly mixing the gas with the air has been the focus of today&#39;s design. 
     BRIEF SUMMARY OF THE INVENTION 
     In view of the above, the primary objective of the present invention is to provide a burner of a gas stove, which could uniformly mix gas with air and has a smaller size. 
     The present invention provides a burner of a gas stove, including a burner body, a partition member, at least one flame cover 
     The burner body includes an inlet portion and a base, wherein the inlet portion has at least one inlet passage for injecting gas and air. The base has at least one mixture passage for mixing the gas and the air. The at least one mixture passage is annular. An end of each of the at least one mixture passage communicates with one of the at least one inlet passage, and another end of each of the at least one mixture passage is a closed end. The partition member is mounted on the base and covers the at least one mixture passage, wherein the partition member has a plurality of through holes communicating with the at least one mixture passage, and the plurality of through holes arranged along a circumferential direction of one of the at least one mixture passage. The at least one flame cover covers the partition member, wherein at least one chamber is formed between each of the at least one flame cover and the partition member. Each of the at least one flame cover has a plurality of flame holes arranged in a ring shape and communicating with one of the at least one chamber. The at least one chamber communicates with the at least one mixture passage through the plurality of through holes of the partition member. The inlet portion is disposed at a side surface of the base and does not protrude out of a bottom of the base, so that the gas and air flow into the base through the side surface of the base. A bottom of each of the at least one mixture passage is inclined upward, so that a cross-sectional area of each of the at least one mixture passage is gradually decreased from the end communicating to one of the at least one inlet passage all the way to the closed end. The base has two opposite ends, and the inlet portion has two opposite ends, wherein an end of the inlet portion is connected to one of the ends of the base. A length of the burner body from the other end of the inlet portion to the other corresponding end of the base is a first length. The base has a maximum outer peripheral surface, and a diameter of the maximum outer peripheral surface is a second length. The first length is equal to or smaller than 1.5 times the second length. 
     By disposing the at least one mixture passage in the base, the size of the burner of the gas stove is reduced significantly, and the gas can mix with the air effectively and uniformly. 
    
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
       The present invention will be best understood by referring to the following detailed description of some illustrative embodiments in conjunction with the accompanying drawings, in which 
         FIG. 1  is a perspective view of a conventional burner of a gas stove; 
         FIG. 2  is a perspective view of a burner of a gas stove of a first embodiment according to the present invention; 
         FIG. 3  is an exploded view of the burner of the gas stove of the first embodiment; 
         FIG. 4  is a top view of a burner body of the first embodiment; 
         FIG. 5  is an exploded view of a partition member and the burner body of the first embodiment; 
         FIG. 6  is a perspective view of the partition member and the burner body; 
         FIG. 7  is a top view of the burner of the gas stove of the first embodiment; 
         FIG. 8  is a cross-sectional view of  FIG. 7  along the line  8 - 8 ; 
         FIG. 9  is a schematic view showing that a gas-air mixture flow direction of the burner of the gas stove of the first embodiment; 
         FIG. 10  is a perspective view of a burner of a gas stove of a second embodiment; 
         FIG. 11  is an exploded view of the burner of the gas stove of the second embodiment; 
         FIG. 12  is a top view of the burner of the gas stove of the second embodiment; 
         FIG. 13  is a top view of the main body of the second embodiment; and 
         FIG. 14  is a cross-sectional view of  FIG. 12  along the line  14 - 14 . 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The following illustrative embodiments and drawings are provided to illustrate the disclosure of the present invention, these and other advantages and effects can be clearly understood by persons skilled in the art after reading the disclosure of this specification. 
     A burner  100  of a gas stove of a first embodiment according to the present invention is shown in  FIG. 2  to  FIG. 9 . The burner  100  includes a burner body  10 , a partition member  20 , and at least one flame cover. 
     The burner body  10  includes a gas conduit  12  and a base  14  which are integrally formed. The gas conduit  12  has at least one gas input passage for injecting gas and air. The at least one gas input passage includes a plurality of gas input passages including a first gas input passage  122 , and a second gas input passage  124 . The first gas input passage  122  and the second gas input passage  124  extend along an axial direction of the gas conduit  12 . The gas conduit  12  has two opposite ends in the axial direction. The first gas input passage  122  and the second gas input passage  124  form two inlets  126 ,  128  at one end of the gas conduit  12 . Each inlet  126 ,  128  is configured to inject the gas and the air. 
     The base  14  has a disk shape and has two opposite ends on an extension line in the axial direction of the gas conduit  12 , one end of the base  14  connected to the other end of the gas conduit  12 . The base  14  has at least one mixture passage for mixing gas and air. The at least one mixture passage is in a ring shape and surrounds a center of the base. One end of the at least one mixture passage communicates the at least one gas input passage, and the other end thereof is a closed end. In the current embodiment, the at least one mixture passage includes a plurality of mixture passages including an outer annular mixture passage  142 , and an inner annular mixture passage  144 . The outer annular mixture passage  142  and the inner annular mixture passage  144  both have open-ring shapes. One end of the outer annular mixture passage  142  communicates with the first gas input passage  122 , and the other end thereof is a first closed end  146 . The outer annular mixture passage  142  surrounds the inner annular mixture passage  144 . One end of the inner annular mixture passage  144  communicates with the second gas input passage  124 , and the other end thereof is a second closed end  148 . 
     More specifically, a top of the base  14  has an engaging recess  149  under which are the outer annular mixture passage  142  and the inner annular mixture passage  144 . A top of the outer annular mixture passage  142  and that of the inner annular mixture passage  144  are open and respectively communicate with the engaging recess  149 . A bottom surface of the engaging recess  149  is recessed and forms two fitting grooves  149   a,    149   b  respectively surrounding the top of the outer annular mixture passage  142  and the top of the inner annular mixture passage  144 . 
     As shown in  FIG. 5  to  FIG. 8 , a cross-sectional area of the outer annular mixture passage  142  decreases gradually in a direction from the end thereof communicating with the first gas input passage  122  to the closed end  146 , and a bottom of the outer annular mixture passage  142  inclines upward in the direction from the end thereof communicating with the first gas input passage  122  to the first closed end  146 . A cross-sectional area of the inner annular mixture passage  144  decreases gradually in a direction from the end thereof communicating with the second gas input passage  124  to the second closed end  148 , and a bottom of the inner annular mixture passage  144  inclines upward in the direction from the end thereof communicating with the second gas input passage  124  to the second closed end  148 . 
     As shown in  FIG. 4 , a length of the burner body  10  from the end of the gas conduit  12  with the two inlets  126 ,  128  to the corresponding end of the base  14  which is away from the two inlets  126 ,  128  is a first length L 1 , and a diameter of a maximum outer ring surface of the base  14  is a second length L 2 . The first length L 1  is greater than the second length, and the first length L 1  is preferably equal to or smaller than 1.5 times the second length L 2 . More preferably, the first length L 1  is between 1.1 and 1.25 times the second length L 2 . Whereby, with the outer annular mixture passage  142  and the inner annular mixture passage  144  disposed in the base  14 , the space occupied by the gas conduit  12  is reduced and the burner body  10  has a shorter length. 
     The partition member  20  is mounted on the base  14 . More specifically, the partition member  20  is disposed in the engaging recess  149  of the base  14 . As shown in  FIG. 5  to  FIG. 8 , the partition member  20  includes an outer ring section  22  and an inner ring section  24  respectively covering the outer annular mixture passage  142  and the inner annular mixture passage  144 . In the current embodiment, a bottom of the outer ring section  22  and that of the inner ring section  24  of the partition member  20  protrude and form two fitting rims  282 ,  284  which are respectively engaged with the two fitting grooves  149   a,    149   b.  The shapes of the two fitting rims  282 ,  284  respectively match the shapes of the two fitting grooves  149   a,    149   b,  so that the outer ring section  22  and the inner ring section  24  are fixedly engaged with the top of the outer annular mixture passage  142  and the top of the inner annular mixture passage  144 . 
     As shown in  FIG. 5  to  FIG. 8 , the partition member  20  has a plurality of through holes including a plurality of first through holes  222  and a plurality of second through holes  242 . In the current embodiment, the outer ring section  22  has the first through holes  222  and a first annular groove  224 . A top of the partition member  20  has a ring rim  26  surrounding the first annular groove  224 , and the first through holes  222  are formed between the ring rim  26  and the first annular groove  224 . The first through holes  222  are arc holes and spaced apart along a circumferential direction of the outer annular mixture passage  142 . The first through holes  222  communicate with the outer annular mixture passage  142  through the first annular groove  224 . The inner ring section  24  has a second annular groove  244  and the second through holes  242 . The second through holes  242  are arc holes and located at an outer side of the second annular groove  244 . The second through holes  242  are spaced apart along a circumferential direction of the inner annular mixture passage  144  and communicate with the inner annular mixture passage  144  through the second annular groove  244 . 
     As shown in  FIG. 2 ,  FIG. 5 ,  FIG. 7 , and  FIG. 8 , the at least one flame cover includes a plurality of flame covers including an outer annular flame cover  30  and an inner annular flame cover  40 . The outer annular flame cover  30  includes an outer ring side  31  and an inner ring side  34 . The outer ring side  31  has a plurality of first flame holes  312  arranged in a ring shape, and the inner ring side  34  has at least one flame guide groove  32  and at least one flame guide hole  35 . In the current embodiment, the at least one flame guide groove  32  includes a plurality of flame guide grooves  32  and the at least one flame guide hole  35  includes a plurality of flame guide holes  35 . The outer annular flame cover  30  covers the outer ring section  22  of the partition member  20 , and a first chamber  36  is formed between the outer annular flame cover  30  and the outer ring section  22 . The first chamber  36  communicates with the first flame holes  312 , the flame guide holes  35 , and the flame guide grooves  32 . One end of each flame guide groove  32  is located beside two flame guide holes  35 , and the flame guide groove  32  extends in a direction from the inner ring side  34  to the outer ring side  31 . The first chamber  36  communicates with the outer annular mixture passage  142  through the first through holes  222  of the partition member  20 . In practice, the flame guide holes  35  and the flame guide grooves  32  may not be provided, or only one of the flame guide holes  35  and the flame guide grooves  32  may be provided. 
     In the current embodiment, a ring partition  50  is disposed between the outer annular flame cover  30  and the partition member  20  and is located in the first chamber  36 . The ring partition  50  has a plurality of penetrating holes  52  arranged in a ring shape, whereby the gas-air mixture flow is concentrated and flows into the upper part of the first chamber  36  through the penetrating holes  52 . In practice, the ring partition  50  may not be provided. 
     The inner annular flame cover  40  has an outer ring side  42  corresponding to the inner ring side  34  of the outer annular flame cover  30 . The outer ring side  42  has a plurality of second flame holes  422  arranged in a ring shape. The inner annular flame cover  40  covers the inner ring section  24  of the partition member  20 , and a second chamber  44  is formed between the inner annular flame cover  40  and the inner ring section  24 . The second chamber  44  communicates with the inner annular mixture passage  144  through the second through holes  242  of the partition member  20 . In the current embodiment, a cover ring  60  is disposed at the inner annular flame cover  40  and located above the second flame holes  422 . In practice, the cover ring  60  may not be provided. 
     The following description related to  FIG. 5  and  FIG. 9  depicts a gas-air mixture flow direction. The gas and air flow into the first gas input passage  122 , form a gas-air mixture flow, then flow into the outer annular mixture passage  142 . Meanwhile, the gas and air flow into the second gas input passage  124 , form a gas-air mixture flow, then flow into the inner annular mixture passage  144 . Since the cross-sectional area of outer annular mixture passage  142  and that of the inner annular mixture passage  144  decrease gradually, a pressure of the first closed end  146  and that of the second closed end  148  are greater than those of the inlets  126 ,  128 , resulting in the gas-air mixture flows respectively flowing to the first closed end  146  and the second closed end  148 , so that the gas mixes sufficiently with the air in the outer annular mixture passage  142  and the inner annular mixture passage  144 . With the bottom of the outer annular mixture passage  142  and that of the inner annular mixture passage  144  inclining upward, the gas-air mixture flows are guided upwards smoothly. 
     The gas-air mixture flow in the outer annular mixture passage  142  passes through the first annular groove  224  and the first through holes  222  and flows into the lower part of the first chamber  36 , then passes through the penetrating holes  52  of the ring partition  50  and flows into the upper part of the first chamber  36 . The time which the gas-air mixture flow passes through the first chamber  36  is extended by the ring partition  50 , so that the gas-air mixture flow forms a holding pressure in the first chamber  36  and then is output from the first flame holes  312 , the flame guide grooves  32 , and the flame guide holes  35 . 
     The gas-air mixture flow in the inner annular mixture passage  144  passes through the second annular groove  244  and the second through holes  242  and then flows into the second chamber  44 , so that the gas-air mixture flow output from the second flame holes  422  can be expanded outward by the cover ring  60 . 
     An igniter (not shown) can be provided beside the flame guide holes  35  and the flame guide groove  32  for igniting the gas-air mixture flow output from the flame guide holes  35  and the flame guide groove  32 . After igniting flames, the flames extend outward from the inner ring side  34  to the outer ring side  31  to ignite the gas-air mixture flow output from the first flame holes  312 . Meanwhile, the igniter ignites the gas-air mixture flow output from the second flame holes  422 . The flame guide groove  32  is designed to accelerate the time of igniting the gas-air mixture flow output from the first flame holes  312 . 
     By disposing the outer annular mixture passage  142  and the inner annular mixture passage  144  in the base  14 , the size of the burner  100  of the gas stove is reduced significantly, and the gas can mix with the air sufficiently with the help of annular mixture passages. 
     As illustrated in  FIG. 10  to  FIG. 14 , a burner  200  of a second embodiment has almost the same structure as the burner  100  of the first embodiment, except that the gas conduit  12  of the burner body  10  of the burner  200  of the second embodiment has merely one gas input passage, namely a first gas input passage  122 . The first gas input passage  122  forms an inlet  126  at one end of the gas conduit  12 . It should be noted that the structure of the components of the first embodiment is almost the same as that of the second embodiment, so that the components of the burner  200  of the second embodiment do not describe in detail. Besides, the names and the numbers of the components of the second embodiment remain the same as that of the first embodiment. 
     The base  14  of the burner body  10  has merely an annular mixture passage, namely an outer annular mixture passage  142 . The outer annular mixture passage  142  extends in a circumferential direction of the burner body  10  and communicates with the first gas input passage  122   
     The burner  200  of a second embodiment includes a partition member  20 , wherein the partition member  20  merely has an outer ring section  22 . 
     In the second embodiment, the burner  200  includes one annular flame cover, namely an outer annular flame cover  30 , wherein the outer annular flame cover  30  covers the outer ring section  22  of the partition member  20 . 
     A first chamber  36  is formed between the outer annular flame cover  30  and the outer ring section  22 , wherein a ring partition  50  is optionally disposed in the first chamber  36 . 
     Since the outer annular mixture passage  142  of the burner  200  of the second embodiment is circumferentially disposed in the base  14  of the burner body  10 , the total volume of the burner  200  is reduced significantly, and the gas and the air could still be evenly mixed within the outer annular mixture passage  142 . 
     Additionally, in the second embodiment, the base  14  of the burner body  10  has a central space that is surrounded by the outer annular mixture passage  142 , wherein a sensor, such as a sensor for detecting the pot, a sensor for detecting temperature, or any other kinds of sensors, could be disposed in the central space. 
     It must be pointed out that the embodiments described above are only some embodiments of the present invention. All equivalent structures which employ the concepts disclosed in this specification and the appended claims should fall within the scope of the present invention.