Microwave resonator for sterilizing liquid substance at low temperature
A technology of microwave resonant cavity and liquid substances, applied in the direction of irradiation, etc., can solve the problems that liquid substances cannot be sterilized in the structure and sterilization treatment method, and achieve remarkable sterilization treatment effect, simple structure and low production cost Effect
Inactive Publication Date: 2014-04-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
Although the microwave sterilizer can sterilize air; its structure and sterilizing treatment methods cannot be used for sterilizing liquid substances
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[0012] In this embodiment, the resonant cavity shell 1 has an inner diameter of Φ20mm, an inner cavity height of 25mm, a tube wall thickness of 3mm, and a material of stainless steel. The bottom of the resonance cavity in this embodiment is provided with 4 liquid substance output ports 1-1 with a diameter of Φ1.2mm, and 4 liquid substances. The outer mouth of the output port is provided with a liquid material output converging port with a diameter of Φ3.8mm; the liquid inlet cavity (inner conductor) 2 has an outer diameter of Φ10mm, an axial height of 17mm, and a wall thickness of 1mm. The lower end of the conical head is 2-1 shaft 5 mm in height, and four liquid outlets 2-3 with a diameter of Φ1.0 mm are arranged symmetrically along the axial direction, and the distance between the center of each liquid outlet 2-3 is also 1.0 mm from the central axis, and the material is stainless steel; the catheter 3 The inner diameter is Φ4.0mm, the wall thickness is 2.0mm, and the material...
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Abstract
The invention belongs to a microwave coaxial resonator for sterilizing a liquid substance at a low temperature. The microwave coaxial resonator comprises a resonator shell, a liquid substance output port formed in the center of the bottom of the resonator shell, a cylindrical liquid inlet cavity which is formed on the axis of the resonator and provided with a liquid inlet and of which the lower end is a conical head with a liquid outlet and the upper end is arranged outside the resonator shell, a liquid guide pipe for communicating the liquid substance output port with a liquid outlet of the conical head and a microwave coupler. According to the microwave coaxial resonator, a cylindrical inner conductor which is coaxial with the resonator in the prior art is changed into a cavity-shaped inner conductor, and is used as an inner conductor and a liquid inlet cavity; a group of liquid outlets are formed in the conical head, and the liquid substance output port is formed at the bottom of the shell, so that the field intensity of a gap area between the conical head and the bottom of the shell is effectively improved by a point effect; and therefore, the microwave coaxial resonator has the characteristics of simple structure, small size, low production cost, convenience in operation and control, low energy consumption, high concentration ratio of a high-field-intensity area, high sterilization speed, obvious effect, low temperature rise, capability of low-temperature sterilization at low power and the like.
Description
technical field [0001] The invention belongs to a microwave sterilization device, in particular to a microwave coaxial resonant cavity used for low-temperature sterilization of liquid substances. Background technique [0002] In the industry, especially the catering industry, a large amount of bacteria-containing liquid substances and beverages need to be sterilized; some liquids and injections in the pharmaceutical industry also need to be sterilized, even low-temperature sterilization. At present, most liquid substances are sterilized by high temperature or high temperature and high pressure sterilization, pasteurization and ultraviolet sterilization; among them: although traditional high temperature or high temperature and high pressure sterilization has high reliability, diverse heating methods and wide application range Grade characteristics, but there are defects such as high energy consumption, time-consuming, and damage to nutrients and flavors such as vitamins in li...
Claims
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IPC IPC(8): A61L2/12
Inventor 曾葆青张玉玲
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA