螺桿式空壓機(jī)工作原理

1、吸氣過程：

1. Inspiratory process:

螺桿式的進(jìn)氣側(cè)吸氣口，必須設(shè)計(jì)得使壓縮室可以充分吸氣，而螺桿式壓縮機(jī)并無進(jìn)氣與排氣閥組，進(jìn)氣只靠一調(diào)節(jié)閥的開啟、關(guān)閉調(diào)節(jié)，當(dāng)轉(zhuǎn)子轉(zhuǎn)動(dòng)時(shí)，主副轉(zhuǎn)子 的齒溝空間在轉(zhuǎn)至進(jìn)氣端壁開口時(shí)，其空間最大，此時(shí)轉(zhuǎn)子的齒溝空間與進(jìn)氣口之自由空氣相通，因在排氣時(shí)齒溝之空氣被全數(shù)排出，排氣結(jié)束時(shí)，齒溝乃處于真空 狀態(tài)，當(dāng)轉(zhuǎn)到進(jìn)氣口時(shí)，外界空氣即被吸入，沿軸向流入主副轉(zhuǎn)子的齒溝內(nèi)。當(dāng)空氣充滿整個(gè)齒溝時(shí)，轉(zhuǎn)子之進(jìn)氣側(cè)端面轉(zhuǎn)離了機(jī)殼之進(jìn)氣口，在齒溝間的空氣即被 封閉，以上為，[進(jìn)氣過程]。

The screw type suction port at the inlet side must be designed so that the compression chamber can fully absorb air. However, there is no intake and exhaust valve group in the screw compressor. The air intake is only regulated by the opening and closing of a regulating valve. When the rotor rotates, the main and auxiliary rotors The groove space of the rotor is the largest when it turns to the inlet end wall opening. At this time, the groove space of the rotor is connected with the free air of the air inlet. Because the air in the groove is completely discharged during the exhaust, the groove is in a vacuum state at the end of the exhaust. When it is turned to the air inlet, the outside air is inhaled and flows into the groove of the main and auxiliary rotors along the axial direction. When the air fills the whole gear groove, the end face of the inlet side of the rotor turns away from the air inlet of the casing, and the air between the tooth grooves is closed.

2、封閉及輸送過程：

2. Sealing and conveying process:

主副兩轉(zhuǎn)子在吸氣結(jié)束時(shí)，其主副轉(zhuǎn)子齒峰會(huì)與機(jī)殼閉封，此時(shí)空氣在齒溝內(nèi)閉封不再外流，即[封閉過程]。兩轉(zhuǎn)子繼續(xù)轉(zhuǎn)動(dòng)，其齒峰與齒溝在吸氣端吻合，吻合面逐漸向排氣端移動(dòng)，此即[輸送過程]。

At the end of the suction, the teeth of the main and auxiliary rotors are closed with the casing. At this time, the air is closed in the groove and no longer flows out. When the two rotors continue to rotate, their tooth peaks coincide with the tooth groove at the suction end, and the anastomosis surface gradually moves to the exhaust end, which is called "transportation process".

3、壓縮及噴油過程：

3. Compression and injection process:

在輸送過程中，嚙合面逐漸向排氣端移動(dòng)，亦即嚙合面與排氣口間的齒溝間漸漸減小，齒溝內(nèi)之氣體逐漸被壓縮，壓力提高，此即[壓縮過程]。而壓縮同時(shí)潤(rùn)滑油亦因壓力差的作用而噴入壓縮室內(nèi)與室氣混合。

In the process of transportation, the meshing surface gradually moves to the exhaust end, that is to say, the gap between the meshing surface and the exhaust port gradually decreases, and the gas in the groove is gradually compressed and the pressure is increased, which is called "compression process". At the same time, the lubricating oil is also injected into the compression chamber to mix with the chamber air due to the effect of pressure difference.

4、排氣過程：

4. Exhaust process:

當(dāng)轉(zhuǎn)子的嚙合端面轉(zhuǎn)到與機(jī)殼排氣相通時(shí)，（此時(shí)壓縮氣體之壓力最高）被壓縮之氣體開始排出，直至齒峰與齒溝的嚙合面移至排氣端面，此時(shí)兩轉(zhuǎn)子嚙合面與機(jī)殼 排氣口這齒溝空間為零，即完成（排氣過程），在此同時(shí)轉(zhuǎn)子嚙合面與機(jī)殼進(jìn)氣口之間的齒溝長(zhǎng)度又達(dá)到最長(zhǎng)，其吸氣過程又在進(jìn)行。

When the meshing end face of the rotor turns to be connected with the exhaust of the casing, the compressed gas begins to be discharged until the meshing surface of the tooth peak and the tooth groove moves to the exhaust end face, and the meshing surface of the two rotors is connected with the casing At the same time, the length of the groove between the meshing surface of the rotor and the inlet of the casing reaches the longest, and the suction process is in progress.