Valley compressors are divided into a group of l, c, 3s, 4s, 6s wind-cooled condensers, which can be used as a major component of various refrigeration units and are used in various refrigeration, refrigeration and refrigeration equipment, depending on needs or using different refrigerants, and can obtain the temperatures required for fruit and vegetable preservation, food speed freeze or refrigeration. It is widely used in the commercial, tourism, service, food industry and pharmaceutical and chemical industries. Today we give a brief introduction to the principles of work, the internal structure, the technological advantages — the valley wheel compressor。
I. Rationale
Principle: in simple terms, the vapour compression is achieved by vortex vortex, which acts as a eccentric motion under a eccentric structure, and by the steady reduction of the volume of the vortex and the vortex。
Ii. Internal structure
The above figure shows the approximate structure of the valley-wheel compressor, which is not significantly different from the market-based vortex compressor by inhaling the chiller from the inhaler, by compressing through the vortex, but with the advantage of his various protective measures, which many other compressors cannot do。
Iii. Technical characteristics advantages
High volume efficiency: in compression ratio 1-4, compressor volume efficiency is above 90 per cent, and in compression ratio 4-7, volume efficiency is above 80 per cent. Equivalent capacity is small, broadly understood to mean that the capacity of the 3-p compressor of the valley wheel is comparable to that of other compressors (greater than 3-p)。
2. One-way air flow, low heat loss, high entropy efficiency; low air flow speed, low local loss and reduced energy consumption when refrigerants move within compressors
3 performance curve smooth: improved seasonal energy efficiency ratio (compressors are operating well under various conditions); reduced low load cycle start/stop; high temperature conditions; and high sub-compressors
4. Soft axle and directional sealing: soft sealing designs have better sealing effect and can be adapted to operational conditions, such as a compressor hydraulic shock, oil shock and abnormal pressure when the compressor soft seal separates the compressor vortex and effectively prevents damage to the voltage; by pressuring on the palette, the axle sealing between the axle disks is guaranteed, and when pressure is greater within the compressor cavity body, the axle sealing between the axle discs is ineffective and effective in protecting the vortex
5. Internal protective devices: as can be seen from the structure chart above, some protective devices, such as built-in electrical protections, exhaust temperature protections, floating seals, etc., are briefly described below:
(b) internal electric short circuit protection (temperature and current): protection action in case of low pressure or missing items
Floating seals: ensure volume efficiency of different compression ratios
Excretion valve: high pressure protection:
(b) emission temperature protection: work quality leakage, carbonization of frozen oil
(a) closure valves and reverse protection: reduce stop noise
(a) unloaded start: the shutdown and re-starting are start-up for offloading, which significantly reduces the probability of the electric power burning
Most of the protection of compressors is carried out by air conditioners, and it is not easy for a compressor to do so, and it is also the advantage of a cereal compressor。
