Abstract:
An air compression device is applied in an air compressor, and mainly includes a first rotor, a second rotor, a stop disk, a transmission element and a drive element. When external air enters an air chamber in the air compression device, the air is rotated and compressed by the first rotor and the second rotor, and then is exhausted, the transmission element generates axial displacement vertically according to actual requirements on air admission or exhaust, and drives the drive element and the first rotor to displace, so as to change a capacity of the air chamber, and adjust the air output.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an air compression device assembled in an air compressor, and more particularly to an air compression device capable of adjusting an air chamber capacity to change air input and air output. 
     2. Related Art 
     An air compression device is generally assembled in an air compressor, so as to compress and then exhaust the air inhaled by the air compressor.  FIG. 1  illustrates a conventional air compression device. Referring to  FIG. 1 , an air chamber  101  is formed in the air compression device  10 , a first rotor  1011  and a second rotor  1012  are assembled in the air chamber  101 , and the air chamber  101  is in communication with an air inlet  102  and an air outlet (not shown). When the air enters the air chamber  101  through the air inlet  102 , the first rotor  1011  and the second rotor  1012  are driven to rotate at the same time. When the two rotors ( 1011 ,  1012 ) rotate, the air is compressed to generate compression air, and then the compression air is exhausted through the air outlet. Through the above operation, a process of air admission, compression, and exhaust is successively completed. In the conventional air compression device  10 , the air chamber  101  is fixed in capacity, and generates fixed air output and fixed power accordingly. When a user needs to increase the air output to generate higher power due to a power demand, the air output generated by the air compression device  10  is increased by adjusting an air compression rate of the first rotor  1011  and the second rotor  1012 . Through such operation, the air output may be increased to improve the power output, but the more the air output improves, the more motor power the two rotors ( 1011 ,  1012 ) consume. In addition, when the required power output is smaller than the minimum power provided by the air compression device  10 , energy waste is caused. Moreover, when the two rotors ( 1011 ,  1012 ) operate, the rate has a limit value, and when the required power output is greater than the rated power provided by the air compression device  10 , insufficient air output is caused, and the power cannot be improved. If the above air compression device  10  is applied to an air intake system of a vehicle engine, the required air output of a car apparently and greatly differs from that of a moped. However, in order to achieve various demands on the air output, many groups of the air compression devices  10  need to be used in coordination, which causes rather high limitation for the application of the compression air, and does not conform to the consideration on the manufacturing cost. 
     SUMMARY OF THE INVENTION 
     In view of the above problems, the present invention is directed to provide an air compression device, which can adjust a capacity of a chamber according to power demands, so as to change the air input and air output. 
     In order to achieve the objective, the air compression device mainly includes a first rotor and a second rotor. Through the assembly of a transmission element and a drive element, when external air enters an air chamber, the air is relatively compressed by the first rotor and the second rotor to generate compression air. When an air output demand is changed, the transmission element may generate coaxial relative displacement to drive the first rotor and the second rotor to axially displace vertically, so that the capacity of the air chamber is changed, thereby changing the air output of the air chamber, and further adjusting power provided by the air compression device. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  illustrates a conventional air compression device; 
         FIG. 2  is a three-dimensional appearance view of the present invention; 
         FIG. 3  is a schematic assembly view (1) of components of the present invention; 
         FIG. 4  is a schematic assembly view (2) of components of the present invention; 
         FIG. 5  is a schematic assembly view (3) of components of the present invention; 
         FIG. 6  is a schematic assembly view (4) of components of the present invention; 
         FIG. 7  is a schematic assembly view (5) of components of the present invention; 
         FIG. 8  is a schematic assembly view (6) of components of the present invention; 
         FIG. 9  is a schematic assembly view (7) of components of the present invention; 
         FIG. 10  is a schematic implementation view (1) of the present invention; 
         FIG. 11  is a schematic implementation view (2) of the present invention; 
         FIG. 12  illustrates another embodiment of the present invention; and 
         FIG. 13  is a schematic implementation view of another embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       FIG. 2  is a three-dimensional appearance view of the present invention. Referring to  FIG. 2 , in an air compression device  20 , a lower edge of a housing  201  is assembled with a supporting base  202 , an upper edge of the housing  201  is assembled with a transmission element  203 , and the housing  201  is half-closed. When the supporting base  202  and the transmission element  203  are completely assembled, an air chamber  2011  is formed, and a first rotor  204  and a second rotor  205  (not shown) are assembled therein. The upper edge of the housing  201  extends downwards to form a groove  2012  (not shown). When the transmission element  203  is assembled on the upper edge of the housing  201 , an air inlet  2013  is formed in the groove  2012 , an exhaust channel  2014  is formed in the housing  201 , and the exhaust channel  2014  is in communication with the air chamber  2011 . In this way, a user may adjust a position of the transmission element  203  to change a capacity of the air chamber  2011  and the size of the air inlet  2013 . Therefore, the air input and air output generated by the air compression device  20  may be changed according to different use conditions, thereby changing the provided power. 
       FIG. 3  is a schematic assembly view (1) of components of the present invention. Referring to  FIG. 3 , an accommodation space  2021  is formed in the supporting base  202 , a periphery of the accommodation space  2021  has a bulkhead  2022 , and a height of the bulkhead  2022  is higher than that of the supporting base  202 , and then a sleeve portion  2023  is formed on an edge of the supporting base  202 , so that the housing  201  (as shown in  FIG. 2 ) is sleeved on the sleeve portion  2023 . In addition, a rotation shaft  206  and a relative rotation shaft  207  are assembled in the accommodation space  2021  of the supporting base  202 , and the rotation shaft  206  and the relative rotation shaft  207  are respectively formed into a columnar shape. An actuation portion  2061  is formed on a bottom edge of the rotation shaft  206 , and a slide portion  2062  is formed on a position close to the actuation portion  2061  and is groove-shaped. A slide block  2063  is assembled inside the slide portion  2062 , and may coaxially displace in the slide portion  2062  back and forth. In addition, a rotation shaft casing  2064  is sleeved on the rotation shaft  206 , a stop portion  2065  is formed on a bottom edge of the rotation shaft casing  2064 , and the size of the stop portion  2065  is corresponding to the slide block  2063 . When the rotation shaft casing  2064  is sleeved on the rotation shaft  206 , the slide block  2063  and the stop portion  2065  are closely fitted, so that the rotation shaft casing  2064  is displaced by driving the slide block  2063  to axially move back and forth. Moreover, a relative actuation portion  2071  is assembled on a position close to a bottom edge of the rotation shaft  207 , and an upper edge of the rotation shaft  207  is assembled with a protruding rib  2072 . In this way, when the rotation shaft  206  and the relative rotation shaft  207  are completely assembled, the actuation portion  2061  operates and drives the relative actuation portion  2071  to operate. Furthermore, the two actuation portions ( 2061 ,  2071 ) may be gears, and are in a mutually engaged aspect after assembling. In addition, the protruding rib  2072  may be formed in the following manner: an assembling portion is formed on the relative rotation shaft  207 , and then a protruding pillar is assembled therein, so as to form the protruding rib  2072 . 
       FIG. 4  is a schematic assembly view (2) of components of the present invention. Referring to  FIG. 4 , after the above components are assembled, a housing  201  is sleeved on a sleeve portion  2023  of the supporting base  202 , in which the housing  201  is half-closed. A relative sleeve portion  2015  is formed on a lower edge of the housing  201 , an upper edge of the housing  201  extends downwards to form a groove  2012 , and an exhaust channel  2014  is formed in the exhaust housing  201 , and passes through the upper edge and an internal edge of the housing  201 . In addition, more than one through hole (not shown) is formed in the bottom edge of the housing  201 , and the size of the through holes may be changed according to the size of the component. During assembling, the relative sleeve portion  2015  and the sleeve portion  2023  are completely assembled, and the two rotation shafts ( 206 ,  207 ) penetrate the through holes. In this way, the components formed through the above assembly are covered by the housing  201 .  FIG. 5  is a schematic assembly view (3) of components of the present invention. Referring to  FIG. 5 , after the housing  201  finishes the assembling, a rotor group is assembled. The first rotor  204  and the second rotor  205  are in a columnar shape respectively, and the two rotors ( 204 ,  205 ) are respectively sleeved on the two rotation shafts ( 206 ,  207 ). In addition, the second rotor  205  has an assembling hole  2051 , and an assembling groove  2052  is formed on an inner edge of the assembling hole  2051 , so that during the assembling of the second rotor  205 , the second rotor  205  may be assembled on the relative rotation shaft  207  by penetrating the protruding rib  2072  on the relative rotation shaft  207  through the assembling groove  2052 . Further, when the two rotors ( 204 ,  205 ) are completely assembled, the two rotors are closely fitted with the rotation shaft  206  and the relative rotation shaft  207  respectively, and are misaligned with each other. In addition, after the two rotors ( 204 ,  205 ) are completely assembled, relative rotation may be generated through the drive of the actuation portion  2061  and the relative actuation portion  2071 . Furthermore, after the first rotor is completely assembled, a stop disk  2041  is sleeved on the first rotor  204 , and a through hole  2042  is formed in the stop disk  2041 , in which the shape and the size of the through hole  2042  correspond to the first rotor  204 .  FIG. 6  is a schematic assembly view (4) of components of the present invention. Referring to  FIG. 6 , the stop disk  2041  is sleeved at the lower edge portion of the first rotor  204 , and the lower edge portion of the first rotor  204  is received in the accommodation space  2021 , a part of the edge of the stop disk  2041  presses against the upper edge of the bulkhead  2022 , and the first rotor  204  is closely attached to the stop disk  2041 . In this way, the first rotor  204  operates due to the rotation of the rotation shaft, and the stop disk  2041  is driven by the first rotor  204  and slides on the bulkhead  2022 . When the first rotor  204  is driven by the rotation shaft casing  2064  (see  FIG. 5 ) to displace, an overlapping position of the first rotor  204  and the stop disk  2041  is changed, so that the first rotor  204  axially displaces vertically in the stop disk  2041 . 
       FIG. 7  is a schematic assembly view (5) of components of the present invention. Referring to  FIG. 7 , after the above components are completely assembled, a drive element  208  is assembled on an upper edge of the second rotor  205 , an engagement portion  2081  is formed on a lower edge of the drive element  208 , and the shape and the size of the engagement portion  2081  correspond to the second rotor  205 . In addition, during the assembling of the drive element  208 , the drive element  208  is fixed on the relative rotation shaft  207  due to the stop of the protruding rib  2072  of the relative rotation shaft  207 , and the engagement portion  2081  may properly and axially displace on the second rotor  205  vertically. In a common state, the engagement portion  2081  is partially engaged with the second rotor  205 .  FIG. 8  is a schematic assembly view (6) of components of the present invention. Referring to  FIG. 8 , the transmission element  203  is assembled on the first rotor  204  and the drive element  208 , in which a first air vent  2031  (not shown) is formed in the transmission element  203 , and passes through a bottom edge and a side edge of the transmission element  203 , so as to exhaust compression air generated during the operation of the air compression device  20 . In addition, the appearance of the transmission element  203  is formed according to a shape of an inner edge of the housing  201 , and is enable to displace vertically through the inner edge of the housing  201 , and a protruding portion  2032  is formed on an outer edge of the transmission element  203 . During the assembling, the protruding portion  2032  is assembled in the groove  2012  on the housing  201 , and is fixed on the rotation shaft casing  2064 . When the transmission element  203  and the housing  201  are completely assembled, an air inlet  2013  is formed between the protruding portion  2032  and the groove  2012 , and the size of the air inlets  2013  varies according to different positions of the protruding portion  2032  assembled in the groove  2012 . In addition, an assembling groove  2033  is formed on the transmission element  203 , and an assembling hole  2034  is formed on an area close to a center of the assembling groove  2033 , so that the drive element  208  passes through the assembling hole  2034 , and is assembled together with a rotation element  2035 . In this way, the drive element  208  may rotate relative to the transmission element  203 , and the rotation element  2035  may be a transmission mechanism such as a bearing. In addition, a cover  2036  may be further assembled above the transmission element  2035 , and after the above components are completely assembled, the transmission element  203  and a bottom edge of the first rotor  204  are closely fitted, and the components are also closely attached to each other. In this way, an air chamber  2011  (as shown in  FIG. 2 ) is formed in the housing, and is closed.  FIG. 9  is a schematic assembly view (7) of components of the present invention. Referring to  FIG. 9 , the first air vent  2031  on the transmission element  203  is in communication with the exhaust channel  2014  on the housing  201 , and in this way, the compression air generated through the operation of the two rotors ( 204 ,  205 ) may be exhausted to the exhaust channel  2014  through the first air vent  2031  of the transmission element  203 . 
       FIG. 10  is a schematic implementation view (1) of the present invention. Referring to  FIG. 10  in combination with  FIG. 2  and  FIG. 7 , when external air enters the air chamber  2011  through the air inlet  2013 , the external air is compressed by the two rotors ( 204 ,  205 ) to generate compression air, and then the compression air is exhausted through the exhaust channel  2014  to generate power. However, the magnitude of the generated power is determined by the air output generated in the air chamber  2011 . Therefore, the more the external air is compressed, the higher the air output is generated; on the contrary, the generated air output is small. As shown in the figures, in the air compression device  20 , in a common state, an end A of the first rotor  204  is placed in the accommodation space  2021  of the supporting base  202 , and an end B of the second rotor  205  is wrapped by the engagement portion  2081  of the drive element  208 . The first rotor  204  and the second rotor  205  are actuated by two actuation portions ( 2061 ,  2071 ) to axially rotate left and right in the common state, so that the air is compressed and then exhausted through the exhaust channel  2014  to generate the required power.  FIG. 11  is a schematic implementation view (2) of the present invention. Referring to  FIG. 11 , when a user wants to generate a different power output demand, the transmission element  203  is driven to generate an axial displacement vertically, so as to adjust the capacity of the air chamber  2011 . As shown in the figure, in order to generate high power output, the transmission element  203  is actuated to displace upwards, and then the first rotor  204  and the drive element  208  are driven to displace. In this way, the part of the end A of the first rotor  204  in the accommodation space  2021  is decreased, and the area of the end B of the second rotor  205  wrapped by the  2081  is also decreased. In this way, the capacity of the air chamber  2011  is increased, and the generated air output is improved. Referring to  FIG. 10  and  FIG. 11 , as for the capacity d 1  and d 2  as shown in the figures, when the transmission element  203  displaces upwards by a distance d 3 , the first rotor  204  and the drive element  208  are driven to displace upwards by a distance d 3 . In this way, the part of the first rotor  204  in the accommodation space  2021  is decreased by a distance d 3 , and the engagement portion  2081  of the second rotor  205  is separated from the second rotor  205  by a distance d 3 . Therefore, the capacity d 2  is larger than the capacity d 1  by a capacity of the distance d 3 . In addition, since the transmission element  203  displaces upwards, the air inlet  2013  between the groove  2012  and the protruding portion  2032  is enlarged, and the air input and the air output of the air compression device  20  are both increased accordingly. Accordingly, in order to enable the air compression device  20  to meet different power output demands, the transmission element  203  is enabled to axially displace vertically. When the transmission element  203  displaces upwards, the capacity of the air chamber  2011  may be increased, and the air output is improved accordingly. On the contrary, the capacity of the air chamber  2011  may be decreased, and the air output generated by the air compression device  20  is also decreased. 
       FIG. 12  illustrates another embodiment of the present invention. Referring to  FIG. 12 , when a capacity of an air chamber  2011  of an air compression device  20  is increased, the generated air output is also increased. In order to avoid that a first air vent  2031  fails to effectively exhaust compression air in the air chamber  2011 , in this embodiment, a second air vent  2037  is further formed in a bottom edge of a transmission element  203 , so that the compression air may be fast exhausted from the air chamber  2011  through the first air vent  2031  and the second air vent  2037 . As show in the figure, when the transmission element  203  displaces upwards, the second air vent  2037  is gradually in communication with the exhaust channel  2014 , and in this way, the compression air may be exhausted through the first air vent  2031  and the second air vent  2037  at the same time.  FIG. 13  is a schematic implementation view of another embodiment of the present invention. Referring to  FIG. 13 , when the transmission element  203  displaces downwards, the capacity of the air chamber  2011  is decreased, and the second air vent  2037  is gradually isolated with the exhaust channel  2014  due to the downward displacement of the transmission element  203 . In this way, the compression air is merely exhausted through the first air vent  2031  as the second air vent  2037  cannot exhaust. Therefore, more than one air vent ( 2031 ,  2037 ) may be opened according to the capacity of the air chamber  2011  in this embodiment, so that the compression air in the air chamber  2011  can be fast exhausted from the air chamber  2011 . Moreover, in this embodiment, only the second air vent  2037  is added to share and relieve the improved air output when the capacity of the aim chamber  2011  is increased, but the present invention is not limited thereto, and a third air vent or a fourth air vent may be formed as desired. 
     To sum up, in the air compression device of the present invention, the first rotor and the second rotor are assembled in a misalignment manner, when the external air enters the air chamber, the air is axially compressed by the two rotors left and right, and the first rotor and the second rotor axially displaces vertically through the drive of the transmission element, so that the capacity of the air chamber can be changed as desired, so as to change the air input and air output generated in the air compression device. Therefore, after the implementation of the present invention, the air compression device provided by the present invention can change the capacity of the air chamber. 
     To sum up, the above descriptions are merely preferred embodiments of the present invention, but are not intended to limit the present invention. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention should fall within the scope of the present invention. 
     LIST OF REFERENCE NUMERALS 
     
         
         
           
               10  Air compression device 
               101  Air chamber 
               102  Air inlet 
               1011  First rotor 
               1012  Second rotor 
               20  Air compression device 
               201  Housing 
               202  Supporting base 
               2011  Air chamber 
               2021  Accommodation space 
               2012  Groove 
               2022  Bulkhead 
               2013  Air inlet 
               2023  Sleeve portion 
               2014  Exhaust channel 
               2015  Relative sleeve portion 
               203  Transmission element 
               204  First rotor 
               2031  First air vent 
               2041  Stop disk 
               2032  Protruding portion 
               2042  Through hole 
               2033  Assembling groove 
               2034  Assembling hole 
               2035  Rotation element 
               2036  Cover 
               2037  Second air vent 
               205  Second rotor 
               206  Rotation shaft 
               2051  Assembling hole 
               2061  Actuation portion 
               2052  Assembling groove 
               2062  Slide portion 
               2063  Slide block 
               2064  Rotation shaft casing 
               2065  Stop portion 
               207  Relative rotation shaft 
               208  Drive portion 
               2071  Relative actuation portion 
               2081  Engagement portion 
               2072  Protruding rib 
             A End edge 
             B End edge 
             d 1  Capacity 
             d 2  Capacity 
             d 3  Distance