Low-temperature preservation device with disinfection and fresh-keeping functions

Abstract

A low-temperature preservation device with disinfection and fresh-keeping functions comprises low-temperature preservation spaces ( 11, 12, 13 ), an electron emission assembly ( 2 ), a refrigeration system, an electric system and a housing. The electron emission assembly ( 2 ) emits electrons to form negative electric nano particles with a certain density, thereby enabling the preservation spaces into a disinfection state. The negative electric nano particles attached to the surfaces of preserved articles, with water molecules, form hydration films on the preserved articles, so that water of the preserved articles is kept, bacteria and viruses on the surfaces of the preserved articles are killed, freshness of the preserved articles is kept, and the preservation time is prolonged.

1 - 6 . (canceled) 
     
     
         7 . A low-temperature preservation device with disinfection and fresh-keeping functions, made of a thermal insulation material, comprising:
 at least one low-temperature preservation space with different temperatures in at least one from the group consisting of mobile and stationary type devices;   a refrigerating system;   an electric system;   a housing; and   at least one electron emission assembly, equipped in the low-temperature preservation space with different temperatures, comprising an electron emitter, an emission window, and a case, and connected to an power supply and a control unit associated via wires;   wherein, the electron emitter includes at least one of the group consisting of a single electrode and a plurality of electrodes having the same potential, and having a potential relative to a ground potential outside the preservation device, the potential of the electron emitter ranges from −2 kv to −35 kv, the electron emitter being configured to emit electrons into the corresponding low-temperature preservation space only based on a tunneling effect.   
     
     
         8 . The low-temperature preservation device according to  claim 7 , wherein the electron emitter defines at least from the group consisting of a sharp shape, a serrated shape, and a plate shape, the electron emitting being composed of at least one of the group consisting of a metal, carbon, and composite material. 
     
     
         9 . The low-temperature preservation device according to  claim 7 , wherein the quantity and arrangement of the electron emission assemblies vary in dependence upon different volume, shape, size and temperature of the low-temperature preservation space; negative electric nano particles formed by electrons emitted by the electron emitter based on tunneling effect are distributed in the corresponding low temperature preservations space, the density of the negative electric nano particles in the low temperature preservation space is more than 5*10 3 /cm 3  but less than or equal to 10 8 /cm 3 .