CN111388692B

CN111388692B - Disinfection cabinet and disinfection method using same

Info

Publication number: CN111388692B
Application number: CN202010240640.5A
Authority: CN
Inventors: 吴再锐; 王军元; 张文龙
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2023-07-25
Anticipated expiration: 2040-03-31
Also published as: CN111388692A

Abstract

The invention discloses a disinfection cabinet, which comprises a cabinet body (1) with a disinfection cavity (11), and is characterized in that: the disinfection cavity (11) is provided with a disinfection device which can generate pulse flash with the wavelength of 200-1100 nm. The invention also discloses a disinfection method using the disinfection cabinet. Compared with the prior art, the sterilizing device capable of generating the pulse flash with the wavelength of 200-1100 nm is arranged in the cabinet body of the sterilizing cabinet, and the sterilizing cavity is sterilized by utilizing photochemical reaction, flash heat effect and pulse effect of ultraviolet wave bands in the pulse flash, so that the sterilizing efficiency is high and the sterilizing effect is good.

Description

Disinfection cabinet and disinfection method using same

Technical Field

The invention relates to the technical field of kitchen equipment, in particular to a disinfection cabinet and a disinfection method using the disinfection cabinet.

Background

The existing disinfection modes of disinfection cabinet products in the market are as follows: ultraviolet sterilization, which is to use a mercury lamp to generate ultraviolet rays for sterilization; ozone disinfection, which uses the strong oxidizing property of ozone to disinfect; ozone and ultraviolet rays are used for disinfection, a high-ozone ultraviolet lamp is used for generating ultraviolet rays and generating ozone at the same time, so that a disinfection mode of combined action of ultraviolet irradiation and ozone oxidation is achieved; and (3) high-temperature sterilization, namely heating the internal temperature of the sterilizing cabinet to a certain high temperature by adopting an infrared heating technology for sterilization.

However, when ultraviolet rays are used for sterilization, the effect of bacteria exposed to the ultraviolet rays is obvious, but the sterilization efficiency of the shadow part shielded by the dishes is low by means of ultraviolet ray reflection; ozone disinfection makes residual ozone oxide on tableware harmful to human health; when the infrared rays are used for high-temperature disinfection, the temperature in the disinfection cabinet needs to be heated to be more than 100 ℃, the disinfection time is long, and the human body is easy to scald.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide a disinfection cabinet with high disinfection efficiency and good effect aiming at the current state of the art.

The second technical problem to be solved by the invention is to provide a disinfection cabinet capable of avoiding electric shock and reducing noise.

The invention aims to provide a disinfection cabinet with a disinfection device convenient to disassemble and assemble.

The fourth technical problem to be solved by the invention is to provide a disinfection method using the disinfection cabinet.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a sterilizer, includes the cabinet body that has disinfection chamber, its characterized in that: the disinfection cavity is internally provided with a disinfection device which can generate pulse flash with the wavelength of 200-1100 nm.

In order to realize the generation of pulse flash, the sterilizing device is a xenon lamp tube which comprises

The tube body is filled with xenon and provided with a positive electrode end and a negative electrode end; and

the trigger wire is wound on the outer peripheral wall of the tube body and provided with a leading-out end.

In order to further solve the second technical problem, the xenon lamp tube further comprises

A tube cover allowing pulse flash to penetrate, sleeved on the outer periphery of the tube body, and an interlayer formed between the inner peripheral wall of the tube cover and the outer peripheral wall of the tube body;

the trigger wire is accommodated in the interlayer.

In order to further reduce noise, the interior of the interlayer is vacuumized.

In order to realize the installation of the xenon lamp tube on the cabinet body, two ends of the xenon lamp tube are respectively installed on the inner side wall of the cabinet body through a first lamp holder and a second lamp holder;

the xenon lamp tube also comprises

The first conductive piece is arranged at the first end of the pipe body and is electrically connected with the positive end of the pipe body;

the second conductive piece is arranged on the peripheral wall of the pipe body close to the first end and is electrically connected with the leading-out end of the trigger wire; and

the third conductive piece is arranged at the second end of the tube body and is electrically connected with the negative electrode end of the tube body;

a first socket for inserting the first end of the tube body is formed in the side wall of the first lamp holder, a first contact piece and a second contact piece are arranged in the first socket, the first contact piece is contacted with the first conductive piece, and the second contact piece is contacted with the second conductive piece;

the side wall of the second lamp holder is provided with a second socket for inserting the third conductive piece, a third contact piece is arranged in the second socket, and the third contact piece is contacted with the third conductive piece.

In order to ensure sufficient contact between the first conductive member and the first contact piece, the first contact piece is cylindrical, and the first conductive member is cylindrical and inserted into the first contact piece, and the outer wall of the first conductive member abuts against the inner wall of the first contact piece.

In order to ensure full contact between the second conductive piece and the second contact piece, the second contact piece is in a circular ring shape and sleeved on the pipe body, a first spring is arranged in the first socket and sleeved on the pipe body, two ends of the first spring respectively act on the bottom surface of the first socket and the end surface of the second contact piece, and the other end surface of the second contact piece always keeps a trend of propping against the second conductive piece.

In order to further solve the third technical problem, a notch for the third conductive member to pass through and enter the second socket is formed in the front end of the second lamp holder, and a limiting assembly capable of opening and closing the notch is arranged on the second lamp holder.

In order to realize the opening and closing of the notch, the second lamp holder is provided with a mounting groove for mounting a limiting component, and the limiting component comprises

The mounting column is arranged on the side wall of the mounting groove;

a limiting block provided with a slot for inserting the end part of the mounting column; and

the second spring is sleeved on the mounting column, and two ends of the second spring respectively act on the side wall of the mounting groove and the limiting block, so that the limiting block always keeps the trend of sealing the notch.

The technical scheme adopted by the invention for solving the fourth technical problem is as follows: the disinfection method using the disinfection cabinet is characterized in that: the disinfection device is adopted to generate pulse flash with the wavelength of 200-1100 nm to disinfect the disinfection cavity 11 of the cabinet body 1.

In order to ensure the disinfection effect, the pulse width of the pulse flash is 10-100 us, and the energy density of the pulse flash is more than or equal to 0.01J/cm ² 。

In order to ensure the service life of the lamp tube to be more than 5 years on the premise of ensuring the sterilization rate, the stroboscopic frequency of the pulse flash is 1-2 Hz.

Compared with the prior art, the invention has the advantages that: the disinfection device capable of generating the pulse flash with the wavelength of 200-1100 nm is arranged in the cabinet body of the disinfection cabinet, and the disinfection cavity is disinfected by utilizing photochemical reaction, flash heat effect and pulse effect of ultraviolet band in the pulse flash, so that the disinfection efficiency is high and the effect is good.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of a sterilizer of the present invention;

FIG. 2 is a schematic perspective view of the drawer of FIG. 1;

fig. 3 is a schematic perspective view of a xenon lamp tube, a first lamp holder and a second lamp holder according to an embodiment of the present invention (the notch is in a closed state);

FIG. 4 is a longitudinal cross-sectional view of FIG. 3;

FIG. 5 is an enlarged view of section I of FIG. 4;

FIG. 6 is an enlarged view of section II of FIG. 4;

fig. 7 is a schematic perspective view of a xenon lamp tube, a first lamp holder and a second lamp holder according to an embodiment of the present invention (the notch is in a completely opened state);

fig. 8 is a schematic circuit diagram of a xenon lamp tube according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 8, a preferred embodiment of the sterilizer of the present invention is shown. The disinfection cabinet comprises a cabinet body 1 with a disinfection cavity 11 and a disinfection device arranged in the disinfection cavity 11. Wherein, two drawers are arranged one above the other in the disinfection cavity 11, and the disinfection device can generate pulse flash with the wavelength of 200-1100 nm, thereby disinfecting tableware placed on the drawers. In this embodiment, the sterilizing device is a xenon lamp tube 2.

The xenon lamp tube 2 mainly comprises a tube body 21 and a trigger wire 22. Specifically, the inside of the tube body 21 is filled with xenon gas, and the tube body 21 has a positive electrode end and a negative electrode end; the trigger wire 22 is wound around the outer peripheral wall of the tube body 21, and has a lead-out end.

Unlike the conventional sterilizing lamp such as ultraviolet lamp, in this embodiment, the body 21 of the xenon lamp 2 is made of quartz glass, and the xenon lamp using hard glass as the discharge tube generally has poor temperature impact resistance, low energy input per time, and low repetition frequency. The sealing of the tube body 21 and the electrodes at the two ends adopts a high-temperature tungsten quartz diffusion sealing process, the xenon lamp tube 2 manufactured by the process has stable and reliable performance, the sealing part can bear the high temperature of 600-800 ℃ to avoid the explosion of the lamp tube, the tube wall load can reach 10-15W/cm < 2 > in a natural cooling state, and the tube wall load can reach 40W/cm < 2 > in a forced air cooling condition. The xenon lamp tube 2 is filled with rare gas xenon lamp, which is not like a common ultraviolet sterilization tube and a broadband light wave sterilization tube filled with harmful substances such as mercury, scandium metal halide, sodium metal halide, dibromomethane and the like, and if the tube body 21 breaks, the phenomena of pollution to the tableware, even poisoning of human body and the like can be avoided. The electrode material is mainly made of rare earth elements such as tungsten, tantalum, niobium and the like through high-temperature powder metallurgy, and the pulse strobe service life can reach about 1 million times.

Referring to fig. 8, the xenon lamp tube 2 operates as follows: when the power is supplied to the storageEnergy capacitor C ₁ During charging, all current flows into the energy storage capacitor C because the tube 21 is in a high-resistance state before breakdown ₁ When the energy storage capacitor C ₁ When the voltage reaches a certain value, a pulse high voltage (the trigger voltage is generally 3-20 kV) is applied to the trigger wire 22 through the trigger circuit, so that the tube body 21 breaks down and discharges. Xenon in the tube body 21 is pre-ionized, the resistance of the tube body 21 is rapidly reduced, and the energy storage capacitor C ₁ The energy in the capacitor is released to the two-pole channel of the tube body 21, and the capacitor C is stored in a few milliseconds ₁ The energy stored in the capacitor C can be released completely, the discharge end tube 21 is restored to a high-resistance state ₁ And the charging is started, so that pulse discharge luminescence is formed repeatedly.

However, the high voltage on the trigger wire 22 brings about a potential safety hazard, and the arc discharge generates noise when the xenon lamp tube 2 is discharged in two stages, in order to overcome the above problem, the tube cover 23 is sleeved on the outer periphery of the tube body 21 through the porcelain heads 232 at both ends, an interlayer 231 is formed between the inner peripheral wall of the tube cover 23 and the outer peripheral wall of the tube body 21, the trigger wire 22 is accommodated in the interlayer 231, the tube cover 23 allows the pulse flash to pass through, and the inside of the interlayer 231 is vacuumized. In this embodiment, the tube cover 23 is made of a translucent quartz glass, and the arrangement of the tube cover 23 serves two functions: on the one hand, the risk that an appliance or a human body in the disinfection cavity 11 contacts high voltage on the trigger wire 22 when the disinfection cabinet is electrified and the xenon lamp works can be effectively prevented; on the other hand, the arc discharge produces noise when the xenon lamp tube 2 is discharged in two stages, and the tube cover 23 can effectively eliminate or reduce the discharge noise.

The xenon lamp tube 2 is different from a common ultraviolet sterilization lamp tube, and the xenon lamp tube 2 needs three conductive leads, and the common ultraviolet lamp only needs positive and negative leads. For the xenon lamp tube on the market, the positive end, the negative end and the leading-out end of the trigger wire 22 of the tube body 21 are led out by adopting wires, if the lamp tube is directly applied to a disinfection cabinet, a metal sheet is required to be adopted in the disinfection cabinet, the wires are required to be punched on the sheet so as to be connected to a power panel, thus the risk of cutting the insulation layer of the wires due to sharp edges of metal punching is caused, and the lamp tube in the form is extremely inconvenient to disassemble and assemble when applied to a disinfection cabinet product.

In order to facilitate the disassembly and assembly of the xenon lamp tube 2, in this embodiment, two ends of the xenon lamp tube 2 are respectively installed at the middle position of the rear sidewall inside the cabinet body 1 through the first lamp holder 3 and the second lamp holder 4.

The xenon lamp tube 2 further comprises a first conductive member 24, a second conductive member 25 and a third conductive member 26. Specifically, the first conductive member 24 is cylindrical, is convexly arranged at the first end of the tube body 21, and is electrically connected with the positive end of the tube body 21; the second conductive piece 25 is in a ring shape, is arranged on the peripheral wall of the tube body 21 close to the first end, is electrically connected with the leading-out end of the trigger wire 22, and can increase the creepage distance to protect the normal operation of the lamp tube when the voltage of the second conductive piece 25 led out by the trigger wire 22 is up to several kilovolts during normal operation, and the second conductive piece 25 is arranged on the periphery of the tube body 21 instead of being on the same plane with the end electrode; the third conductive member 26 is L-shaped, protrudes from the second end of the tube 21, and is electrically connected to the negative end of the tube 21.

The side wall of the first lamp holder 3 is provided with a first socket 31 for inserting the first end of the tube body 21, the first socket 31 is internally provided with a first contact piece 32 and a second contact piece 33, the first contact piece 32 is cylindrical and is connected with the positive electrode of an external power supply through a wire, the first conductive piece 24 is inserted into the first contact piece 32, and the outer wall of the first conductive piece 24 abuts against the inner wall of the first contact piece 32, so that the first contact piece 32 and the first conductive piece 24 are electrically connected; the second contact piece 33 is annular and is slidably sleeved on the pipe body 21, the first socket 31 is also provided with a first spring 34 connected with the second conductive piece 25, the first spring 34 is sleeved on the pipe body 21, two ends of the first spring 34 respectively act between the bottom surface of the first socket 31 and the end surface of the second contact piece 33, and the other end surface of the second contact piece 33 can always keep the tendency of propping against the second conductive piece 25, so that the second contact piece 33 is electrically connected with the second conductive piece 25, the first spring 34 is made of conductive materials, and the left end of the first spring 34 is connected with an external high-voltage power supply through a wire.

The second socket 41 for inserting the third conductive element 26 is formed on the side wall of the second lamp holder 4, the second socket 41 is L-shaped, a third contact piece 42 is arranged on the inner wall of the second socket, the third contact piece 42 is connected with the negative pole of the external power supply through a wire, and the third contact piece 42 abuts against the third conductive element 26, so that the third contact piece 42 is electrically connected with the third conductive element 26. The front end of the second lamp holder 4 is provided with a notch 43, the third conductive member 26 can enter the second socket 41 through the notch 43, the second lamp holder 4 is also provided with a mounting groove 45, and a limiting assembly 44 capable of opening and closing the notch 43 is arranged in the mounting groove 45.

In this embodiment, the limiting component 44 includes a mounting post 441, a limiting block 442, and a second spring 443. Specifically, the mounting posts 441 are provided on the side walls of the mounting slots 45; the limiting block 442 is provided with a slot 4421 for inserting the end part of the mounting column 441; the second spring 443 is sleeved on the mounting post 441, and two ends of the second spring are respectively acted between the side wall of the mounting groove 45 and the limiting block 442, so that the limiting block 442 always keeps the trend of sealing the notch 43.

The xenon lamp tube 2 of the invention is arranged on the cabinet body 1 as follows:

(1) In an initial state, the first lamp holder 3 and the second lamp holder 4 are respectively arranged on the inner side wall of the cabinet body 1 through fasteners, the first contact piece 32 is connected with the positive electrode of an external power supply through a wire, the left end of the first spring 34 is connected with the external high-voltage power supply through a wire, and the third contact piece 42 is connected with the negative electrode of the external power supply through a wire;

(2) Inserting the first end of the tube body 21 into the first socket 31 of the first lamp holder 3 until the first conductive element 24 is inserted into the first contact piece 32, and simultaneously, abutting the second contact piece 33 against the second conductive element 25 under the action of the first spring 34;

(3) The limiting block 442 is shifted by hand to compress the second spring 443 until the notch 43 is completely opened, and then the third conductive element 26 is inserted into the second socket 41 through the notch 43 to realize the electrical connection with the third contact piece 42, as shown in fig. 7;

(4) Finally, the stopper 442 is released, which closes the notch 43 under the action of the second spring 443, as shown in fig. 3 to 6, so as to prevent the second end of the tube 21 from being separated from the second lamp tube 3.

The invention also provides a disinfection method using the disinfection cabinet, which comprises the following steps: the xenon lamp tube is adopted to generate pulse flash with the wavelength of 200-1100 nm to disinfect the disinfection cavity of the cabinet body.

The xenon lamp tube has extremely high output light intensity, the output spectrum range is 200-1100 nm, three areas of ultraviolet light, visible light and infrared light are covered, the xenon lamp tube is similar to sunlight, the main wave peak is distributed in the range of 400-700 nm, and the energy change is most obvious during stroboscopic.

The action mechanism of pulse flash sterilization is the synergistic effect of all wave bands in the spectrum range, and is mainly characterized in three aspects:

(1) Photochemical reaction in ultraviolet band: when the ultraviolet light part in the pulse strong light spectrum irradiates the microorganism, photochemical reaction occurs between thymine and cytosine in nucleic acid substances (DNA and RNA) to generate dimers, so that the nucleic acid substances of the microorganism are damaged;

(2) Flash heat effect: when per cm ² When the peak power of the area reaches more than 1000W, the microorganism is heated>At 100 ℃, the microorganisms cannot be cooled normally due to extremely short flash time, so that cell walls are broken and melted to die;

(3) Impulse effect: the penetrability of pulsed intense light and the instantaneous high energy mechanical impact damage cell walls and other cellular components, leading to bacterial death.

Table 1 shows the relationship between the pulse width of the pulse flash and the disinfection effect of the disinfection cabinet of the present invention.

Table 1:

as can be seen from Table 1, the pulse flash can kill bacteria or viruses, and research and analysis show that the pulse light sterilizing effect has close relationship with pulse width setting, and the pulse width is in the optimal frequency range of 10-100 us under the premise of ensuring that the EMC test of the whole product passes, and the pulse width in the range reaches 0.01J/cm in single pulse energy density ² With the adoption of the method, a good sterilization effect can be achieved.

In addition, the pulse flash disinfection effect is related to the flash energy density and the flash times of the pulse flash, and the higher the flash energy density is, the higher the strobe frequency is. Table 2 shows the relationship between the strobe frequency of the pulse flash and the disinfection effect of the disinfection cabinet of the present invention.

Table 2:

it can be seen from table 2 that the higher the strobe frequency, the better the disinfection and sterilization effect, but the longer the lamp life. In order to ensure the service life of the lamp tube to be more than 5 years on the premise of ensuring the sterilization rate, the preferable stroboscopic frequency is 1-2 Hz.

Table 3 shows that the strobe frequency was set to 2Hz and the pulse light energy density was 0.2J/cm ² Under the condition, after the escherichia coli is acted for 5 minutes, the disinfection effect of different parts of the disinfection cabinet is achieved.

Table 3:

the upper layer and the lower layer refer to two drawers positioned on the upper layer and the lower layer in the disinfection cavity, the distribution point of the back plate close to the disinfection cavity is called as inside, and the distribution point close to the door glass of the box body is outside. As can be seen from Table 3, the disinfection effect can reach more than 4 logarithmic values.

Table 4 shows the disinfection effect of the disinfection cabinet of the invention under the condition that the ultraviolet-filtering quartz glass tube is sleeved and the quartz glass tube is not sleeved on the periphery of the xenon lamp tube, the ultraviolet-filtering quartz glass tube fully covers the xenon lamp luminous main body, and the spectrum after ultraviolet light filtering is considered to be only in the visible light band and the infrared band.

Table 4:

as can be seen from table 4: the ultraviolet band of the spectrum band range of the xenon lamp tube only has the auxiliary disinfection and sterilization effect.

Table 5 shows the comparison of the disinfection effect of the disinfection cabinet provided with the ultraviolet lamp and the disinfection cabinet of the invention under the same experimental conditions, wherein the power of the ultraviolet lamp is 20W, and the energy density of the pulse xenon lamp is 0.2J/cm ² 。

Table 5:

as can be seen from table 5, the pulsed light has higher sterilization efficiency than the ultraviolet light.

Note that: the test method of the sterilization performance refers to GB 17988-2008 annex AA, BB and CC.

The disinfection cabinet of the invention also has a control system, an electromagnetic lock, an exhaust fan and the like which are commonly used in the traditional disinfection cabinet, wherein the control system is controlled by various keys on a control panel. The invention also provides an operation method using the disinfection cabinet, which comprises the following steps:

(1) Starting a control panel power key, wherein the control system controls the electromagnetic lock to be started, and locks the upper drawer and the lower drawer;

(2) Starting a control panel disinfection key, wherein the disinfection time is 5-10 minutes, and in the process, a temperature controller in the box monitors the disinfection temperature in a disinfection cavity, the temperature reaches 55 ℃, and a fan is started to reduce the temperature in the disinfection cavity;

(3) After the disinfection is finished, automatically switching or manually starting a control panel 'drying' button, wherein the drying time is 10-25 minutes;

(4) After the drying is finished, automatically switching a dehumidifying program, starting an exhaust fan, and dehumidifying for 5-10 minutes;

(5) After the dehumidification is finished, the power key of the control panel is turned off.

Claims

1. The utility model provides a disinfection cabinet, includes cabinet body (1) that has disinfection chamber (11), its characterized in that: the disinfection cavity (11) is internally provided with a disinfection device capable of generating pulse flash with the wavelength of 200-1100 nm;

the sterilizing device is a xenon lamp tube (2), and the xenon lamp tube (2) comprises

A tube body (21) filled with xenon gas and having a positive electrode end and a negative electrode end; and

a trigger wire (22) wound around the outer peripheral wall of the tube body (21) and having an outlet end;

the two ends of the xenon lamp tube (2) are respectively arranged on the inner side wall of the cabinet body (1) through a first lamp holder (3) and a second lamp holder (4);

the xenon lamp tube (2) also comprises

The first conductive piece (24) is arranged at the first end of the pipe body (21) and is electrically connected with the positive end of the pipe body (21);

the second conductive piece (25) is arranged on the outer peripheral wall of the tube body (21) close to the first end and is electrically connected with the leading-out end of the trigger wire (22); and

the third conductive piece (26) is arranged at the second end of the tube body (21) and is electrically connected with the negative electrode end of the tube body (21);

a first socket (31) for inserting the first end of the tube body (21) is formed in the side wall of the first lamp holder (3), a first contact piece (32) and a second contact piece (33) are arranged in the first socket (31), the first contact piece (32) is connected with the first conductive piece (24), and the second contact piece (33) is contacted with the second conductive piece (25);

a second socket (41) for inserting the third conductive piece (26) is formed in the side wall of the second lamp holder (4), a third contact piece (42) is arranged in the second socket (41), and the third contact piece (42) is contacted with the third conductive piece (26);

the front end of the second lamp holder (4) is provided with a notch (43) for the third conductive piece (26) to pass through and enter the second socket (41), and the second lamp holder (4) is provided with a limiting assembly (44) capable of opening and closing the notch (43);

the second lamp holder (4) is provided with a mounting groove (45) for mounting a limiting component (44), and the limiting component (44) comprises

A mounting post (441) provided on a side wall of the mounting groove (45);

a limiting block (442) provided with a slot (4421) for inserting the end part of the mounting column (441); and

the second spring (443) is sleeved on the mounting column (441), and two ends of the second spring respectively act between the side wall of the mounting groove (45) and the limiting block (442), so that the limiting block (442) always keeps the trend of sealing the notch (43).

2. A disinfection cabinet according to claim 1, wherein: the xenon lamp tube (2) also comprises

A tube cover (23) which allows the pulse flash to pass through and is sleeved on the outer periphery of the tube body (21), and an interlayer (231) is formed between the inner peripheral wall of the tube body (21) and the outer peripheral wall of the tube body;

the trigger wire (22) is accommodated in the interlayer (231).

3. A disinfection cabinet according to claim 2, wherein: and vacuumizing the inside of the interlayer (231).

4. A disinfection cabinet according to claim 1, wherein: the first contact piece (32) is cylindrical, the first conductive piece (24) is cylindrical and is inserted into the first contact piece (32), and the outer wall of the first conductive piece (24) is propped against the inner wall of the first contact piece (32).

5. A disinfection cabinet according to claim 1, wherein: the second contact piece (33) is in a circular ring shape and sleeved on the pipe body (21), a first spring (34) is arranged in the first socket (31), the first spring (34) is sleeved on the pipe body (21), two ends of the first spring (34) respectively act between the bottom surface of the first socket (31) and the end surface of the second contact piece (33), and the other end surface of the second contact piece (33) can always keep a trend of propping against the second conductive piece (25).

6. A disinfection method using a disinfection cabinet as claimed in any one of claims 1 to 5, and wherein: the disinfection device is adopted to generate pulse flash with the wavelength of 200-1100 nm to disinfect the disinfection cavity (11) of the cabinet body (1).

7. The disinfection method of claim 6, wherein: the pulse width of the pulse flash is 10-100 us.

8. The disinfection method of claim 6, wherein: the energy density of the pulse flash is more than or equal to 0.01J/cm ² 。

9. The disinfection method of claim 6, wherein: the stroboscopic frequency of the pulse flash is 1-2 Hz.