Central tube set, spiral wound reverse osmosis membrane component, and reverse osmosis water purifier

A spiral wound reverse osmosis membrane component, comprising:

• A central tube set and a plurality of reverse osmosis membrane sheet sets, each of the reverse osmosis membrane sheet sets having a first portion positioned inside the central tube set and a second portion positioned outside the central tube set,
• Wherein, the central tube set comprises:
• A permeate tube, a peripheral wall of the permeate tube being defined with a pure water influx hole communicating with an internal channel of the permeate tube;
• and
• A plurality of wastewater tubes defined at intervals, the wastewater tubes being defined around the permeate tube, a peripheral wall of each wastewater tube being defined with a wastewater influx hole communicating with an internal channel of each wastewater tube;
• The plurality of the wastewater tubes and the permeate tube being defined at intervals, to form a receiving space between each wastewater tube and the permeate tube, for receiving a portion of the reverse osmosis membrane sheet set which is extending into the central tube set;
• Each wastewater tube and the permeate tube being separated by the first portion of one of the reverse osmosis membrane sheet sets;
• the second portion of the plurality of the reverse osmosis membrane sheet sets forming a plural membrane assembly around the central tube set, wherein, the central tube set comprises the plurality of wastewater tubes,
• A quantity of the wastewater tubes is N, and N is greater than or equal to 3;
• A cross section of the permeate tube is configured as N-polygonal and correspondingly has N lateral surfaces, each lateral surface is defined with the pure water influx hole;
• each wastewater tube is defined at a position corresponding to one of the lateral surfaces;
• or
• A quantity of the wastewater tubes is two;
• the permeate tube is a flat tube, and the permeate tube has two lateral surfaces, and each of the lateral surfaces is defined with the pure water influx hole;
• each of the wastewater tubes is defined at a position corresponding to one of the lateral surfaces.

A reverse osmosis water purifier, comprising:

• A spiral wound reverse osmosis membrane component;
• the spiral wound reverse osmosis membrane component comprising a central tube set and a plurality of reverse osmosis membrane sheet sets, each reverse osmosis membrane sheet set having a first portion positioned inside the central tube set and a second portion positioned outside the central tube set,
• Wherein, the central tube set comprises:
• A permeate tube, a peripheral wall of the permeate tube being defined with a pure water influx hole communicating with an internal channel of the permeate tube;
• and
• A plurality of wastewater tubes defined at intervals, the wastewater tubes being defined around the permeate tube, a peripheral wall of each wastewater tube being defined with a wastewater influx hole communicating with an internal channel of each wastewater tube;
• The plurality of the wastewater tubes and the permeate tube are defined at intervals, to form a receiving space between each wastewater tube and the permeate tube, for receiving a portion of the reverse osmosis membrane sheet set which is extending into the central tube set, each wastewater tube and the permeate tube being separated by the first portion of one of the reverse osmosis membrane sheet sets;
• the second portion of the plurality of the reverse osmosis membrane sheet set forming a plural membrane assembly surrounding the central tube set, wherein, a quantity of the wastewater tubes is N, and N is greater than or equal to 3;
• A cross section of the permeate tube is configured as N-polygonal and correspondingly has N lateral surfaces, each lateral surface is defined with the pure water influx hole;
• each wastewater tube is defined at a position corresponding to one of the lateral surfaces;
• or
• A quantity of the wastewater tubes is two;
• the permeate tube is a flat tube, and the permeate tube has two lateral surfaces, and each of the lateral surfaces is defined with the pure water influx hole;
• each of the wastewater tubes is defined at a position corresponding to one of the lateral surfaces.