Air compression device

An air compression device is applied in an air compressor. A rotatable pressure regulating disk and a valve are disposed in a rotor set. When external air enters an air chamber in the rotor set, the air is exhausted after being compressed through rotation of a first rotor and a second rotor. When the two rotors compress the air, a user may control the pressure regulating disk to rotate to advance or postpone exhaust of the air from the valve, so as to change an exhaust pressure in the air chamber to adjust an exhaust volume output by the rotor set. An adjustable air intake disk may further be added, so that timing adjustment can be performed during both air intake and exhaust.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an air compression device mounted in an air compressor, and more particularly to an air compression device capable of adjusting exhaust timing of a valve so as to change an exhaust pressure.

2. Related Art

In a common air compressor, a set of air compression device is assembled to compress a gas drawn by the air compressor before the gas is exhausted.FIG. 1is a schematic sectional view of a conventional air compression device. Referring toFIG. 1, an air chamber101is formed in an air compression device10. A valve102is formed in the air chamber101. The valve102is fixed, and is formed across an inner wall of the air chamber101. A first rotor1011and a second rotor1012are assembled in the air chamber101respectively. When external air enters (as indicated by an arrow A in the figure), the first rotor1011and the second rotor1012are driven by an electric current to rotate synchronously. According to the figure, when the air just enters the air chamber101, the first rotor1011is at the beginning of a stroke, and at this moment, the first rotor1011completely covers the valve102.FIG. 2is a schematic view of action of the conventional air compression device. Referring toFIG. 2, when the first rotor and the second rotor (1011,1012) rotate, the air is gradually compressed to form compressed air A1, and after the first rotor1011rotates, the valve102covered by the first rotor1011is gradually exposed to be in an opened state to exhaust the compressed air A1from the valve102, so that through the action, air intake, compression, and exhaust strokes are completed continuously. Accordingly, after entering the air chamber101, the external air is compressed by the two rotors (1011,1012), so that before the air is exhausted, an exhaust pressure in the air chamber101increases gradually, an exhaust time point determines the exhaust pressure, and a motor power consumed by the two rotors increases as the exhaust pressure rises. However, the exhaust pressure, output power, and exhaust volume of a common rotor set are fixed. When a user needs a smaller exhaust volume, if the output motor power is high, energy is wasted; on the contrary, the exhaust may not be sufficient, which affects the efficiency of action of a connected mechanism. For example, when the air compression device is applied in an air intake system of a vehicle engine, since the difference between an exhaust volume required by a motorcar and an exhaust volume required by a locomotive is obviously large, in order to meet the demands of providing various exhaust volumes, multiple sets of the air compression devices are required, which greatly limits the application of the compressed air, and also leads to a high manufacturing cost.

SUMMARY OF THE INVENTION

Accordingly, the present invention is directed to an air compression device, which can adjust an exhaust pressure according to demands, so as to change a motor power and an exhaust volume.

In order to achieve the above objective, in the air compression device of the present invention, a pressure regulating disk is assembled. When external air enters an air chamber, the pressure regulating disk is rotated to change a position of a valve during a compression stroke of a first rotor and a second rotor, to advance or postpone exhaust of the compressed external air, so as to change an exhaust pressure in the air chamber, thus relatively adjusting a motor power and an exhaust volume.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 3is a schematic view of components according to the present invention. Referring toFIG. 3, an air compression device20mainly includes a first cover body201, a pressure regulating disk202, a first rotor203, a second rotor204, a main seat body205, a second cover body206, and an actuating portion207. An accommodation slot2011is formed on a side surface of the first cover body201, a first shaft hole2012is formed in the middle of the accommodation slot2011, and an exhaust passage2013is formed at a bottom of the accommodation slot2011. The exhaust passage2013is in communication with an exhaust hole2014formed on another side surface of the first cover body201. In addition, a second shaft hole2015is formed at a position near the first shaft hole2012, and a passage2016in communication with the accommodation slot2011is formed on a side edge of the first cover body201, through which the actuating portion207(for example, a transverse lever) passes. A shaft hole2021is formed in the pressure regulating disk202. A valve2022running through a disk body is formed on a surface of the disk body. A gear disk2023(not shown) is fixedly disposed at the back of the pressure regulating disk202. A rotor shaft2031is assembled at the first rotor203, and a rotor shaft2041is assembled at the second rotor204. One end of the rotor shaft2031runs through the shaft hole2021of the pressure regulating disk202, and is pivoted in the first shaft hole2012of the first cover body201. One end of the rotor shaft2041is pivoted in the second shaft hole2015of the first cover body201. Therefore, after being pivoted, the two rotors (203,204) can rotate synchronously relative to the first cover body201. The main seat body205may be assembled on an opposite surface of the first cover body201, and an air chamber2051is formed in the main seat body205. The two rotors (203,204) are movably assembled in the air chamber2051respectively. In addition, an air inlet2052is formed at the top of the main seat body205, and is in communication with the air chamber2051, so as to enable external air to enter the air chamber2051. After the components are assembled, the second cover body206is further assembled on one side of the main seat body205. Two shaft holes (2061,2062) formed in the second cover body206are penetrated by the other ends of the rotor shafts (2031,2041), so that both of the two ends of the rotors (203,204) are pivoted, thus enabling the two rotors (203,204) to rotate in the air chamber2051. After the assembly, a closed state is formed in the air chamber2051. In addition, an exhaust hole2063may also be formed in the second cover body206, and is in communication with the air chamber2051, so that release of an exhaust pressure is more balanced. That is, exhaust can be performed on two sides of the air chamber2051at the same time. Accordingly,FIG. 4is a three-dimensional outside view according to the present invention after the components are assembled. In addition, the second cover body206and the main seat body205may also be integrally formed.

FIG. 5is a schematic implementation view (1) of the present invention. Referring toFIG. 5andFIG. 3, the accommodation slot2011of the first cover body201is assembled with the pressure regulating disk202, the gear disk2023at the back of the pressure regulating disk202is in a linkage state with the actuating portion207, and in the linkage state, a linked motion is achieved through engagement of gears. Referring toFIG. 5, the valve2022of the pressure regulating disk202in a normal state is in communication with the exhaust passage2013in the accommodation slot2011. After a transverse displacement, the actuating portion207in the present invention may enable the pressure regulating disk202to deflect through linkage by using a transmission function of the gear disk2023. Referring to the figure, for example, when the actuating portion207moves towards the passage2016(in an arrow direction W1), the gear disk2023enables the pressure regulating disk202to deflect (for example, in an arrow direction W1′) through linkage, and meanwhile enables the valve2022to deflect towards a position of the arrow direction W1′. On the contrary, if the actuating portion207moves outwards (for example, in an arrow direction W2) through the passage2016, the valve2022deflects in an arrow direction W2′. Therefore, through a relative displacement of the actuating portion207, a position of the valve2022on the pressure regulating disk202is changed, and the valve2022moves relative to the exhaust passage2013.

FIG. 6is a schematic implementation view (2) of the present invention. Referring toFIG. 6, after the external air enters the air chamber2051through the air inlet2052, the air is compressed by the two rotors (203,204), and an exhaust pressure in the air chamber2051is determined by an exhaust volume and a consumed motor power. Therefore, if a compressing time is longer (that is, the exhaust of the compressed air is postponed), the pressure becomes greater; and on the contrary, the pressure becomes smaller. Referring toFIG. 6, in normal action, a timing point T of the valve2022of the pressure regulating disk202is at an original position T1, which is an initial state set according to an original air pressure. That is, when no special demand of the air pressure is put forward, the exhaust time is the time when the two rotors (203,204) rotate to the original position T1and the valve2022gradually enters an opened state, and at this moment, the compressed air starts to be exhausted.FIG. 7is a schematic implementation view (3) of the present invention. Referring toFIG. 7, assuming that a special demand is put forward to require the compressed air to be output in advance, in this case, the pressure regulating disk202deflects after being driven by the actuating portion207, and meanwhile the original position of the valve2022of the pressure regulating disk202is rotated from T1to the position T2. Therefore, in terms of the compression stroke of the two rotors (203,204), the timing point T of the valve2022is shifted forwards (that is, as show in the figure, from the original position T1to the position T2), and in this case, when the compression stroke of the two rotors (203,204) reaches the position T2, air exhaust is already started. Therefore, if the exhaust of the compressed air is required to be postponed according to an actual demand, it can be achieved by using the actuating portion207to drive the pressure regulating disk202to deflect, so that the timing point T of the valve2022is rotated from the position T1to the position T3. In view of the above, in the present invention, the time to compress and exhaust the air is adjusted by rotating the pressure regulating disk202to change the exhaust pressure in the air chamber2051, so that a user can adjust the motor power to be consumed by the rotor set and the exhaust volume freely.

FIG. 8is a schematic view of a preferred embodiment (1) of the present invention. Referring toFIG. 8, the present invention may further be applied to an engine system30, and a sensing unit301(for example, a sensing chip) is used, so that an exhaust volume of the air compression device20can be adjusted automatically, thus meeting an actual power output demand. Referring toFIG. 8, the actuating portion207of the air compression device20assembled in the engine system30(for example, an engine system of a locomotive) is electrically connected to the sensing unit301. The sensing unit301can sense and detect a situation in the engine system (that is, a demand unit302shown in the figure, such as a carburetor system), so as to drive the actuating portion207to act to change a timing position of the valve2022, thereby adjusting an exhaust pressure in the air compression device20. For example, when the power of a locomotive increases, the rotation speed of the engine rises correspondingly, and the exhaust volume of the engine also increases. In this case, the sensing unit301detects the situation of the demand unit302, and drives the actuating portion207to act correspondingly, so as to make the exhaust pressure generated by the air compression device20meet a current power output demand of the engine. One or more linkage mechanisms may exist between the sensing unit301and the actuating portion207, such as a gear-type actuator, an airbag-type actuator, a handspike or a lever, a spring, and an oil hydraulic mechanism.

FIG. 9shows a preferred embodiment (2) of the present invention. Referring toFIG. 9, in order to make the air compression device of the present invention better meet the actual application demands, in the present invention, an air inlet is formed at a side portion of the air chamber2051of the air compression device (referring toFIG. 3), and the air inlet is designed to be adjustable to change the timing of the valve during air intake. Referring toFIG. 9, an air inlet2064is formed in one of the first cover body201and the second cover body206(for the convenience of description, in this embodiment, the air inlet2064is formed in the second cover body206). In addition, an air intake adjustment disk208is assembled on a surface of the second cover body206facing the main seat body205, and a structure of the air intake adjustment disk208is the same as that of the pressure regulating disk202for air exhaust (referring toFIG. 3). A valve2081is formed at the air intake adjustment disk208, and in a normal state, a position of the valve2081corresponds to the air inlet2064. Referring to the figure, another actuating portion209is assembled on a side surface of the second cover body206, and one end of the actuating portion209is linked to the air intake adjustment disk208. When the actuating portion209moves, the air intake adjustment disk208is moved synchronously through linkage to make the valve2081deflect to meet a demand of adjusting air intake timing.

FIG. 10shows a preferred embodiment (3) of the present invention. Referring toFIG. 10, an air intake adjustment lever211capable of blocking air intake is assembled at one of the first cover body201and the second cover body206(for the convenience of description, in this embodiment, the air intake adjustment lever211is formed at the second cover body206), and one end of the air intake adjustment lever211is near the air inlet2064and in a normal state, does not interfere with an air intake process of the air inlet2064. In addition, the air intake adjustment lever211can perform linear movement action. When an air intake volume is require to be adjusted, the air intake adjustment lever211takes action to make an end thereof overlap (interfere with) the air inlet2064, so as to adjust the air intake volume.

Accordingly, in the structures of the present invention, the valve timing adjustable during exhaust plays the main role, and if a combination of multiple air intake and exhaust requirements is required according to actual demands, the aforementioned structure may further be introduced, so as to adjust both the valve timing during the air intake and exhaust and the air intake volume.

In view of the above, in the present invention, the pressure regulating disk is assembled in the air compression device, and the actuating portion enables the pressure regulating disk to deflect and move through linkage, so that the valve timing point may be changed according to demands, thus changing the exhaust pressure in the air compression device. In addition, the air intake adjustment disk or the air intake adjustment lever may further be added according to demands, so as to adjust the valve timing of the air intake and exhaust according to the demands. Therefore, when applied accordingly, the present invention can provide an air compression device capable of changing a motor power and an exhaust volume of an air compressor.

The above description is merely preferred embodiments of the present invention, but is not intended to limit the scope of the present invention. All the equivalent variations and modifications made by persons skilled in the art without departing from the spirit and scope of the present invention shall fall within the appended claims of the present invention.