Abstract:
A nozzle for both types of gas stove of liquefied petroleum gas and natural gas includes a nozzle and an adjustable member. The nozzle member includes a gas channel, a receiving portion communicated with the gas channel. The adjustable member is received in the receiving portion, which has a plurality of apertures thereon. The adjustable member is moved to various positions to have the predetermined apertures communicated with the gas channel respectively to provide different gas supplies for the gas stove of liquefied petroleum gas or natural gas.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates generally to a gas stove, and more particularly to a nozzle of a gas stove. 
   2. Description of the Related Art 
   A conventional gas stove includes a gas switch and a nozzle connected to the gas switch. The gas switch controls the gas mixing with air for burning. Conventional gas stove incorporates liquefied petroleum gas or natural gas to supply gas. The liquefied petroleum gas and natural gas have different pressure and output, such that the nozzles of gas stoves for liquefied petroleum gas and for natural gas are different. Typically, the nozzle for liquefied petroleum gas has a smaller hole, and the nozzle for natural gas has a greater hole. Manufacturers of gas stove have to prepare both types of the nozzles for different gas stoves, and that increases the cost of manufacture. 
   To fix this problem, there was a nozzle for both liquefied petroleum gas and natural gas. Such nozzle is provided with an adjustable member on the nozzle. The adjustable member is moved proximal or distal to the nozzle that could control the output of gas. In practice, when the adjustable member is moved against the nozzle, the nozzle has only one hole jetting gas out. In such condition, the nozzle is suitable to the gas stove of liquefied petroleum gas. On the contrary, when the adjustable member is moved away from the nozzle, the nozzle has plenty of holes jetting gas for the gas stove of natural gas. 
   Such nozzle may be suitable for both types of gas stove. But the inventor found the nozzle having air turbulence when the adjustable keeps a predetermined distance from the nozzle, and that makes the gas out unstable. 
   SUMMARY OF THE INVENTION 
   The primary objective of the present invention is to provide a nozzle of a gas stove suitable to both types of gas stoves for liquefied petroleum gas and natural gas. 
   The secondary objective of the present invention is to provide a nozzle of a gas stove, which has no air turbulence problem. 
   According to the objectives of the present invention, a nozzle for both types of gas stove of liquefied petroleum gas and natural gas includes a nozzle and an adjustable member. The nozzle member includes a gas channel, a receiving portion communicated with the gas channel. The adjustable member is received in the receiving portion, which has a plurality of apertures thereon. The adjustable member is moved to various positions to have the predetermined apertures communicated with the gas channel respectively to provide different gas supplies for the gas stove of liquefied petroleum gas or natural gas. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a sectional view of a first preferred embodiment of the present invention, showing the nozzle being adjusted for liquefied petroleum gas; 
       FIG. 2  is a sectional view of the first preferred embodiment of the present invention, showing the nozzle being adjusted for natural gas; 
       FIG. 3  is a sectional view of a second preferred embodiment of the present invention, showing the nozzle being adjusted for liquefied petroleum gas; 
       FIG. 4  is a sectional view of the second preferred embodiment of the present invention, showing the nozzle being adjusted for natural gas; 
       FIG. 5  is a perspective view of a third preferred embodiment of the present invention; 
       FIG. 6  is a sectional view of the third preferred embodiment of the present invention, showing the nozzle being adjusted for natural gas; 
       FIG. 7  is a sectional view of the third preferred embodiment of the present invention, showing the nozzle being adjusted for liquefied petroleum gas; 
       FIG. 8  is a sectional view of a fourth preferred embodiment of the present invention, showing the nozzle being adjusted for liquefied petroleum gas; 
       FIG. 9  is a lateral view of the guiding block of the fourth preferred embodiment of the present invention; 
       FIG. 10  is a sectional view of the fourth preferred embodiment of the present invention, showing the nozzle being adjusted for natural gas; 
       FIG. 11  is a sectional view of a fifth preferred embodiment of the present invention, showing the nozzle being adjusted for liquefied petroleum gas; and 
       FIG. 12  is a sectional view of the fifth preferred embodiment of the present invention, showing the nozzle being adjusted for natural gas. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   As shown in  FIG. 1 , a gas nozzle  10  of the first preferred embodiment of the present invention, which is connected a gas switch (not shown), includes a nozzle member  12  and an adjustable member  14 . 
   The nozzle member  12  includes a tubular main member  22  with a gas channel  24 . The gas channel  24  includes a greater diameter section  26 , a smaller diameter section  28  and a receiving portion  30 . The receiving portion  30  is communicated with the smaller diameter section  28 . A check port  32  is formed between the smaller diameter section  28  and the receiving portion  30 . The receiving portion  30  includes a ventilation section  34  and a connection section  36 . The connection section  36  includes an inner thread. 
   The adjustable member  14  includes a block  40  with a driving portion  42  and a closing portion  44  opposite to the driving portion  42 . The closing portion  44  of the block  40  may seal the check port  32 , and there is a space between a sidewall of the ventilation section  34  and the closing portion  44 . The driving portion  42  of the block  40  may be driven for rotation. The block  40  further has a connecting portion  45  with an outer thread to be meshed with the connection section  36 , a first aperture  46  with opposite ends on the driving portion  42  and the closing portion  44 , and two second apertures  48  on the closing portion  44  communicated with the first aperture  46  and the space that form an extra passageway to the first aperture  44 . 
   In operation, when the nozzle  10  of the present invention is mounted on a gas stove of liquefied petroleum gas, the adjustable member  14  is turned to shift it in the receiving portion  30  to the check port  32  that makes gas flowing through the gas channel  24  only flows out through the first aperture  46 . The gas supply is less which fits to the gas stove of liquefied petroleum gas. 
   As shown in  FIG. 2 , when the nozzle  10  of the present invention is mounted in a gas stove of natural gas, the adjustable member  14  is turned to leave the check port  32  that the first aperture  46  is communicated with the second apertures  48 . As a result, gas flowing through the gas channel  24  flows out through the first apertures  46 , and the gas also flows to the first apertures  46  through the extra passageway that the gas supply is greater which fits to the gas stove of natural gas. A copper ring  50  is fitted to the block  40  between the driving portion  42  and the main member  22  in this condition. 
   The present invention provides the adjustable member being shifted relative to the check port  32  to open or close the extra passageway for adjustment of the gas supply that is suitable both of the gas stoves for liquefied petroleum gas and natural gas. In addition, the first aperture  46  is the only way flowing the gas out no matter the adjustable member  14  is adjusted for the gas stoves for liquefied petroleum gas or natural gas that make the nozzle  10  of the present invention has no problem of air turbulence. 
     FIG. 3  and  FIG. 4  shows a nozzle  50  of the second preferred embodiment, which is similar to the nozzle  10  of the first preferred embodiment, except that the nozzle  50  further includes a receiving portion  52  with a straight section  54 , in which an adjustable member  56  is received, and a leakage-proof ring, which is made of silicon, fitted to a driving portion  58  of the adjustable member  56  and against the straight section  54 . The operation and functions of the nozzle  50  of the second preferred embodiment are as same as the nozzle  10  of the first preferred embodiment. 
   As shown in  FIGS. 5 to 7 , a nozzle  60  of the third preferred embodiment of the present invention includes a receiving portion  62  in a nozzle member  63  and transversely through a gas channel  64  thereof. An adjustable member  66  is received in the receiving portion  62 . The adjustable member  66  is provided with two passageways  68  and an aperture  70  located in the gas channel  64 . The passageways  68  are parallel and extended through the adjustable member  66  along a direction vertical to an axial direction thereof. The aperture  70  is extended between along a direction vertical to both of the axial direction of the adjustable member  66  and the passageways  68  and crosses the passageways  68 . It may select gas flowing through the gas channel  64  via the passageways  68  or via the aperture  70  when the adjustable member  66  is turned. 
   As shown in  FIG. 6 , the adjustable member  66  is turned to have the passageways  68  aligned with the gas channel  64 , in which gas flows through the passageways  68  to give a greater gas supply for the gas stove of liquefied petroleum gas. The adjustable member  66  also may be turned to have the aperture  70  aligned with the gas channel  64 , as shown in  FIG. 7 , to give a less gas supply for the gas stove of natural gas. 
   As shown in  FIGS. 8 to 10 , a nozzle  80  of the fourth preferred embodiment of the present invention includes an adjustable member  82  and a nozzle member  90 . The adjustable member  82  includes a plug  84 , an adjustable block  86  and a guiding block  88 . The plug  84  has an outer thread to be screwed into a receiving portion  92  of the nozzle member  92 , on a sidewall of which an inner thread is provided. The adjustable block  86  has an outer thread also to be screwed into the receiving portion  92  and under the plug  84 . The adjustable block  86  includes a straight section  94 , a driving section  98 , the threaded section  96  provided with the outer thread between the straight section  94  and the driving section  98  and a aperture  100  through the three sections  94 ,  96  and  98 . A leakage-proof ring  102  is fitted to the straight section  94 . The threaded section  96  has an end face  104  facing the plug  84 . The guiding block  88  is received in the receiving portion  92  too under the adjustable block  86  and communicated with a gas channel  106  of the nozzle member  90 . The guiding block  88  includes a first passageway  108  and three second passageways  110  communicating the gas channel  106  and the receiving portion  92 . 
   When the adjustable block  86  is turned for movement toward and against the guiding block  88 , the second passageways  100  are sealed. Under such condition, gas only flows out through the first passageway  108  and the aperture  100  to give a less gas supply for the gas stove of liquefied petroleum gas. When the adjustable block  86  is turned oppositely to leave guiding block  88  and have the end face  104  against the plug  84 , gas may flow through first passageway  108 , the second passageways  110  and the aperture  100  to give a greater gas supply for the gas stove of natural gas. 
   As shown in  FIGS. 11 and 12 , a nozzle  110  of the fifth preferred embodiment of the present invention includes an adjustable member  120  consisting of hollow plug  122  and an adjustable block  124 . The plug  122  is screwed into a receiving portion  128  of a nozzle member  126  and includes a chamber  130  and an aperture  132  communicated with the chamber  130 . The adjustable block  124  includes a base  134 , a bar  136  with an end connected to the base  134  and a passageway  140  through the base  134  and the bar  136 . The bar  136  has a diameter less than that of the base  134  to be selected to be inserted into a gas channel  138  of the nozzle member  138  or into the chamber  130  of the plug  122 . 
   When the adjustable block  124  is turned to move the bar  136  to the chamber  130  of the plug, gas flows through the passageway  140  and the aperture  132  to give a less gas supply for the gas stove of liquefied petroleum gas. When the adjustable block  124  is turned to have the bar  136  in the gas channel  138 , gas flows through the passageway  140  to the chamber  130  to give a greater gas supply for the gas stove of natural gas. 
   In conclusion, the present invention provides the adjustable member for manipulation to be moved in the receiving portion for adjustment of the gas supply. It is suitable to both of the gas stove for liquefied petroleum gas and natural gas. The nozzle of the present invention has a stable gas flow without the problem of air turbulence.