CN112856628B

CN112856628B - Disinfection cabinet

Info

Publication number: CN112856628B
Application number: CN202110013606.9A
Authority: CN
Inventors: 姚津津; 罗灵; 茅忠群; 诸永定
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2022-04-19
Anticipated expiration: 2041-01-06
Also published as: CN112856628A

Abstract

The invention discloses a disinfection cabinet, which comprises a shell (1) and a liner (2) arranged in the shell (1), wherein an interlayer (11) is formed between the outer wall of the liner (2) and the inner wall of the shell (1), and the disinfection cabinet is characterized in that: the shell (1) is provided with an air inlet (12) and an air outlet (13) which are communicated with the interlayer (11) and the outside atmosphere, a first air channel between the air inlet (12) and the air outlet (13) is formed in the interlayer (11), a semiconductor refrigerating unit (3) is arranged in the first air channel, and the semiconductor refrigerating unit (3) can be overturned under the driving of a first driving mechanism (4) so that the cold end or the hot end of the semiconductor refrigerating unit is exposed in the first air channel. Compared with the prior art, the disinfection cabinet can blow cold air or hot air outwards to realize a cold air or hot air mode, and does not occupy additional kitchen space.

Description

Disinfection cabinet

Technical Field

The invention relates to the technical field of kitchen utensils, in particular to a disinfection cabinet.

Background

When cooking in a kitchen, the temperature of the kitchen is higher, especially in summer, the kitchen is hotter, and the current method is to equip an air conditioner in the kitchen usually, and even integrate the air conditioner, a disinfection cabinet, a gas stove, a range hood and the like in the kitchen.

For example, an air-conditioning integrated stove disclosed in patent application No. CN201810329966.8 (publication No. CN108443926A) includes a disinfection cabinet, a storage cabinet, a cooking bench and a range hood, and is characterized in that an air-conditioning device is arranged inside the range hood, an air-conditioning outlet is arranged in the center of the front face of the range hood, and the air-conditioning device is connected with an air-conditioning outdoor unit. The air conditioner is combined with the integrated cooker, so that the temperature of a kitchen can be changed, the air in the kitchen can be purified, and the comfort level of cooking is increased.

However, in the above-mentioned integrated kitchen of air conditioner, units such as air conditioner, sterilizer are mutually noninterference, independent work, and the blowing of cold-hot wind is realized by the air conditioner unit completely, still needs to occupy extra kitchen space.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a disinfection cabinet which can blow cold air or hot air outwards to realize a cold air or hot air mode and does not occupy additional space in a kitchen, in view of the current situation of the prior art.

The second technical problem to be solved by the invention is to provide a disinfection cabinet which can be conveniently opened or closed in a cold air or hot air mode.

The third technical problem to be solved by the invention is to provide a disinfection cabinet which can realize a cold air mode and can perform auxiliary drying on a disinfection cavity at the same time.

The fourth technical problem to be solved by the invention is to provide a disinfection cabinet capable of improving the heat dissipation effect of the semiconductor refrigeration unit when a cold air mode is realized.

The fifth technical problem to be solved by the invention is to provide a disinfection cabinet capable of improving hot air blowing efficiency in a hot air mode.

The sixth technical problem to be solved by the invention is to provide a disinfection cabinet which is convenient for water vapor in a disinfection cavity to be discharged.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a disinfection cabinet, which comprises

A housing; and

the inner container is arranged in the shell and is provided with a disinfection cavity, and an interlayer is formed between the outer wall of the inner container and the inner wall of the shell;

the method is characterized in that: the shell is provided with an air inlet and an air outlet which are communicated with the interlayer and the outside atmosphere, and a first air channel between the air inlet and the air outlet is formed in the interlayer;

and also comprises

The semiconductor refrigeration unit is positioned in the first air duct; and

the power output end of the first driving mechanism is in transmission connection with the semiconductor refrigeration unit and is used for driving the cold end and the hot end of the semiconductor refrigeration unit to overturn so that the disinfection cabinet has at least two states:

in a first state, the cold end of the semiconductor refrigeration unit is exposed in the first air duct;

in the second state, the hot end of the semiconductor refrigeration unit is exposed in the first air duct.

In order to further solve the second technical problem, the air outlet is located at the front side of the housing, and a panel capable of opening or closing the air outlet is installed on the housing.

In order to realize the automatic turnover of the panel, the two ends of the panel are rotationally connected to the shell through pin shafts, and a second driving mechanism capable of driving the panel to rotate around the axis of the pin shaft is arranged in the interlayer.

In order to realize the driving of the second driving mechanism to the panel, the back surface of the panel is provided with a supporting seat, and the second driving mechanism comprises

The first end of the connecting rod is hinged on the supporting seat, and the second end of the connecting rod is provided with a waist-shaped hole extending along the length direction of the connecting rod; and

and the electric push rod is fixed relative to the shell, and the driving end of the electric push rod is rotationally connected in the waist-shaped hole and can slide in the waist-shaped hole.

In order to further solve the third technical problem, a concave portion is formed in the inner container corresponding to the outer wall of the semiconductor refrigeration unit, and in the first state, the hot end of the semiconductor refrigeration unit is exposed in the concave portion.

In order to improve the drying efficiency and uniformity of the disinfection cavity, the inner container is provided with an air outlet and an air return opening which are communicated with the disinfection cavity and the interlayer, a second air channel is formed between the air outlet and the air return opening in the interlayer, and the disinfection cabinet further comprises a heating device which can heat the air flowing through the second air channel.

In order to further solve the fourth technical problem, a first flow through hole and a second flow through hole which are communicated with the inner cavity of the recessed portion and the disinfection cavity are formed in the side wall of the recessed portion, and the air return opening sequentially faces the first flow through hole and the second flow through hole, so that air discharged from the air return opening enters the inner cavity of the recessed portion through the first flow through hole and then returns to the disinfection cavity through the second flow through hole.

In order to facilitate the formation of the second air duct, an air supply device is arranged in the interlayer, a second air duct is formed inside the air supply device, an inlet of the second air duct is communicated with the air outlet, an outlet of the second air duct is communicated with the air return opening, and the air supply device can convey airflow from the inlet of the second air duct to the outlet of the second air duct.

In order to further solve the fifth and sixth technical problems, a third air duct is further formed inside the air supply device, an inlet of the third air duct is communicated with the air outlet, an outlet of the third air duct is communicated with the first air duct through an interlayer, the air supply device can convey airflow from the inlet of the third air duct to the outlet of the third air duct, and a valve capable of opening or closing the outlet of the third air duct is installed in the interlayer. The third air channel is arranged to discharge heat or water vapor in the disinfection cavity to the first air channel, so that the generation of hot air is assisted and the water vapor is conveniently discharged.

In order to convey the airflow from the inlet of the first air duct to the outlet of the first air duct, the air supply device comprises

The centrifugal fan is provided with an air suction port and an air exhaust port, can suck air flow from the air suction port and exhaust the air flow through the air exhaust port, and the air suction port of the centrifugal fan is an inlet of the second air channel and an inlet of the third air channel; and

and the communicating box body is provided with a first air port, a second air port and a third air port, the first air port of the communicating box body is communicated with the air exhaust port of the centrifugal fan, the second air port of the communicating box body is an outlet of the second air channel, and the third air port of the communicating box body is an outlet of the third air channel.

In order to automatically open and close the third air duct, the valve comprises

The two ends of the valve plate can be rotatably connected to the communicating box body through a rotating shaft; and

and the power output end of the third driving piece is in transmission connection with the rotating shaft and is used for driving the valve plate to rotate around the axis of the rotating shaft so as to open or close the third air port.

In order to facilitate the formation of the first air duct, a cross-flow fan capable of conveying airflow from an inlet of the first air duct to an outlet of the first air duct is arranged in the first air duct.

In order to ensure the refrigerating or heating efficiency, the number of the semiconductor refrigerating units is at least two, the semiconductor refrigerating units are sequentially arranged along the extending direction of the first air channel, and the first driving mechanisms correspond to the semiconductor refrigerating units one to one.

In order to drive the semiconductor refrigeration unit to turn over through the first driving mechanism, the first driving mechanism is arranged in the interlayer and comprises

A first base fixed relative to the housing;

the rotating shaft is rotatably connected to the first base, and the first end of the rotating shaft is in transmission connection with the semiconductor refrigeration unit;

and the power output shaft of the first driving piece is connected with the second end of the rotating shaft and used for driving the rotating shaft to rotate.

In order to drive the semiconductor refrigeration unit to translate through the first driving mechanism and improve the freedom degree of movement of the semiconductor refrigeration unit, the first driving mechanism also comprises

A second base connected to a first end of the rotating shaft;

a screw rod rotatably connected to the second base and arranged in a height direction of the semiconductor refrigeration unit;

one end of the sliding seat is connected to the screw rod in a threaded manner, and the other end of the sliding seat is connected with the semiconductor refrigeration unit; and

and a power output shaft of the second driving piece is in transmission connection with the screw rod and used for driving the screw rod to rotate.

In order to realize the stable movement of the sliding seat and avoid the deviation, the first driving mechanism further comprises a guide rod which is connected to the second base and arranged in parallel to the screw rod, and correspondingly, a guide hole for the guide rod to pass through is formed in the sliding seat.

In order to realize the transmission connection between the second driving piece and the screw rod and reduce the occupied space at the same time, the first driving mechanism further comprises a driving gear and a driven gear which are meshed with each other, the driven gear is arranged at one end of the screw rod, and the driving gear can be rotatably connected to the second base and is connected with a power output shaft of the second driving piece.

Compared with the prior art, the invention has the advantages that: through set up semiconductor refrigeration unit and first actuating mechanism in the intermediate layer between shell and inner bag to set up intercommunication intermediate layer and the atmospheric air intake of external world and air outlet on the shell, under first actuating mechanism's drive, semiconductor refrigeration unit's cold junction and hot junction can overturn, so that its cold junction or hot junction expose in the first wind channel between air intake and air outlet, thereby blow cold wind or hot-blast in order to realize cold wind or hot-blast mode outwards, and the realization of above-mentioned function does not additionally occupy the kitchen space.

Drawings

FIG. 1 is a schematic perspective view of a disinfection cabinet according to an embodiment of the present invention (with a portion of the housing omitted);

FIG. 2 is an exploded perspective view of the sterilizer of FIG. 1;

FIG. 3 is a schematic perspective view of the semiconductor refrigeration unit and the first drive mechanism of FIG. 2;

FIG. 4 is a longitudinal cross-sectional view of an embodiment of the sterilizer of the present invention in the sterilization mode;

FIG. 5 is a longitudinal cross-sectional view of the sterilizer of FIG. 4 after conversion to a steam exhaust mode;

FIG. 6 is a longitudinal cross-sectional view of the sterilizer of FIG. 4 after switching to the hot air mode;

figure 7 is a longitudinal cross-sectional view of the sterilizer of figure 4 after switching to the cool air mode.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 7, a preferred embodiment of the disinfection cabinet of the present invention is shown. The disinfection cabinet comprises a shell 1, an inner container 2, a semiconductor refrigeration unit 3, a first driving mechanism 4, a second driving mechanism 5, a heating device 6 and an air supply device 7.

Wherein, the inner container 2 is provided with a disinfection cavity 21 and arranged in the shell 1, and an interlayer 11 is formed between the outer wall of the inner container 2 and the inner wall of the shell 1, which is a common arrangement mode of the disinfection cabinet.

In this embodiment, an air inlet 12 is formed in the upper portion of the rear side wall of the housing 1, an air outlet 13 is formed in the upper portion of the front side wall of the housing 1, both the air inlet 12 and the air outlet 13 are used for communicating the interlayer 11 with the outside atmosphere, a cross-flow fan 16 is installed between the air inlet 12 and the air outlet 13 on the upper portion of the interlayer 11, and the cross-flow fan 16 can suck air flow from the air inlet 12 and discharge the air flow through the air outlet 13, so that a first air duct between the air inlet 12 and the air outlet 13 is formed in the upper portion of the interlayer 11. In addition, an active carbon filter 15 is arranged on the air inlet 12; a panel 14 is installed at the position of the air outlet 13 on the housing 1, two ends of the panel 14 are rotatably connected to the housing 1 through a pin, a supporting seat 141 is installed on the back of the panel 14, and the panel 14 can rotate around the axis of the pin under the driving of the second driving mechanism 5.

An air outlet 22 is arranged at the lower part of the rear side wall of the inner container 2, and an air return opening 23 is arranged at the upper part of the rear side wall of the outer shell 2; the top wall of the inner container 2 is recessed inwards to form a recessed portion 24, a first flow through hole 241 and a second flow through hole 242 which are communicated with the inner cavity of the recessed portion 24 and the disinfection chamber 21 are respectively formed in the rear side wall and the front side wall of the recessed portion 24, the air return opening 23 sequentially faces the first flow through hole 241 and the second flow through hole 242, and therefore air discharged from the air return opening 23 enters the inner cavity of the recessed portion 24 through the first flow through hole 241 and then returns to the disinfection chamber 21 through the second flow through hole 242.

The semiconductor refrigeration units 3 are in a sheet shape, are located at positions corresponding to the recessed portions 24 in the first air duct, are at least two in number, and are sequentially arranged along the extending direction of the first air duct. Two sides of the semiconductor refrigeration unit 3 are respectively provided with a cold end and a hot end and can transfer the heat of the cold end to the hot end, and the hot end of the semiconductor refrigeration unit 3 is provided with a radiator 31. Under the drive of the first driving mechanism 4, the cold end and the hot end of the semiconductor refrigeration unit 3 can be turned over and have two states: in the first state, the cold end of the semiconductor refrigeration unit 3 is exposed in the first air duct, cold air is generated in the first air duct, and the radiator at the hot end of the semiconductor refrigeration unit 3 is exposed in the concave part 24 for radiating; in the second state, the hot end of the semiconductor refrigeration unit 3 is exposed to the first air duct, and hot air is generated in the first air duct.

The first driving mechanisms 4 are arranged in the interlayer 11 and correspond to the semiconductor refrigeration units 3 one by one. As shown in fig. 3, each of the first driving mechanisms 4 includes a first base 41, a rotating shaft 42, a first driving member 43, a second base 44, a screw 45, a sliding seat 46, a second driving member 47, a guide rod 48, a driving gear 49a, and a driven gear 49 b. Specifically, the first base 41 is mounted on the top wall of the inner container 2; the rotary shaft 42 is rotatably connected to the first base 41; the second pedestal 44 is connected to a first end of the rotation shaft 42; the screw rod 45 is rotatably connected to the second base 44 and arranged in the height direction of the semiconductor refrigeration unit 3; one end of the sliding seat 46 is connected to the screw rod 45 in a threaded manner, and the other end is connected with the end part of the semiconductor refrigeration unit 3; the guide rod 48 is connected to the second base 44 and arranged parallel to the screw rod 45, and correspondingly, the sliding seat 46 is provided with a guide hole 461 through which the guide rod 48 passes; the driven gear 49b is provided at one end of the screw rod 45; the driving gear 49a is rotatably connected to the second base 44 and engaged with the driven gear 49 b; the first driving member 43 and the second driving member 47 are both motors, the power output shaft of the first driving member 43 is connected to the second end of the rotating shaft 42 to drive the rotating shaft 42 to rotate, so as to drive the semiconductor refrigeration unit 3 to rotate synchronously through the second base 42, the power output shaft of the second driving member 47 is connected to the driving gear 49a, and the screw rod 45 can be driven to rotate through the driving gear 49a and the driven gear 49b, so as to drive the semiconductor refrigeration unit 3 to move horizontally.

The second driving mechanism 5 is disposed in the interlayer 11 and includes a connecting rod 51 and an electric push rod 52. As shown in fig. 1, the first end of the connecting rod 51 is hinged to the supporting seat 141 on the back of the panel 14, and the second end is provided with a waist-shaped hole 511 extending along the length direction thereof; the electric push rod 52 is installed on the top wall of the inner container 2, and the driving end thereof is hinged in the waist-shaped hole 511 and can slide in the waist-shaped hole 511. When the electric push rod 52 is activated, the driving end thereof drives the supporting seat 141 and the panel 14 to synchronously turn over through the connecting rod 51, so as to open or close the air outlet 13.

The air supply device 7 is arranged in the interlayer 11, a second air channel and a third air channel are formed inside the air supply device, an inlet of the second air channel is communicated with the air outlet 22, an outlet of the second air channel is communicated with the air return opening 23, an inlet of the third air channel is communicated with the air outlet 22, an outlet of the third air channel is communicated with the first air channel through the interlayer 11, and the air supply device 7 can convey air flow from the inlet of the second air channel to the outlet of the second air channel and from the inlet of the third air channel to the outlet of the third air channel.

In this embodiment, as shown in fig. 2, the air supply device 7 includes a centrifugal fan 71, a communicating box 72 and a valve 73, and the second air duct and the third air duct are formed in the inner spaces of the centrifugal fan 71 and the communicating box 72. Specifically, the centrifugal fan 71 has an air suction port and an air discharge port, and can suck air flow from the air suction port and discharge the air flow through the air discharge port, wherein the air suction port of the centrifugal fan 71 is an inlet of the second air duct and the third air duct; a first air port 721 is formed at the bottom of the communicating box body 72, a second air port 722 is formed in the front side of the top of the communicating box body 72, a third air port 723 is formed in the rear side of the top of the communicating box body, the first air port 721 communicated with the box body 72 is communicated with an air outlet of the centrifugal fan 71, the second air port 722 communicated with the box body 72 is an outlet of a second air duct, and the third air port 723 communicated with the box body 72 is an outlet of a third air duct; the valve 73 includes a valve plate 731 and a third driving member 732, both ends of the valve plate 731 are rotatably connected to the communicating box 72 through a rotating shaft 7311, the third driving member 732 is a motor, and a power output shaft thereof is connected to one end of the rotating shaft 7311, so as to drive the valve plate 731 to rotate around the axis of the rotating shaft 7311 to open or close the third air opening 723.

The heating device 6 is installed inside the communication box 72 and can heat the air flow inside.

The working principle of the invention is as follows:

(1) when the traditional disinfection function needs to be realized, the centrifugal fan 71 and the heating device 6 are started, and the third air port 723 is closed, as shown in fig. 4, the disinfection cabinet is in a disinfection mode, the centrifugal fan 71 sucks the air flow in the disinfection cavity 21 from the air outlet 22, the air flow is heated in the communicating box body 72 by the heating device 6 and then returns to the disinfection cavity 21 through the air return port 23, so that sufficient internal circulation in the disinfection cavity 21 is realized, the temperature field at each corner is ensured to be uniform, and the tableware drying effect is good;

(2) when the drying is finished and the steam exhaust function needs to be realized, only the heating device 6 needs to be turned off, the third driving part 732 is started to drive the valve plate 731 to rotate to open the third air port 723 so as to conduct the third air duct, as shown in fig. 5, the disinfection cabinet is in the steam exhaust mode, the centrifugal fan 71 sucks in the steam in the disinfection cavity 21, most of the steam flows through the third air duct and is blown into the interlayer 11 through the third air port 723 and then is exhausted into the external atmosphere through the air inlet 12 on the housing 1, of course, the electric push rod 52 can be started, the panel 14 is driven to turn over through the connecting rod 51 so as to open the air outlet 13, and the steam is exhausted from the air outlet 13 so as to prevent the steam from entering the cabinet;

(3) when hot air needs to be blown to a kitchen, the semiconductor refrigeration unit 3 and the cross-flow fan 16 are started, and the air outlet 13 is opened, as shown in fig. 6, the disinfection cabinet is in a hot air mode, the hot end of the semiconductor refrigeration unit 3 is exposed in the first air duct, the cross-flow fan 16 sucks external atmosphere from the air inlet 12, and air flow is heated by the hot end of the semiconductor refrigeration unit 3 in the first air duct and then is discharged into the kitchen through the air outlet 13 for heating; meanwhile, the centrifugal fan 71 and the heating device 6 can be started, the third air opening 723 is opened, the centrifugal fan 71 sucks the air flow in the disinfection cavity 21 from the air outlet 22, and the air flow is heated in the communication box body 72 by the heating device 6 and then is blown into the first air channel through the third air opening 723 so as to improve the efficiency of hot air generation in the first air channel;

(4) when cold air needs to be blown to a kitchen, the semiconductor refrigeration unit 3 and the cross-flow fan 16 are started, and the air outlet 13 is opened, as shown in fig. 7, the disinfection cabinet is in a cold air mode, the cold end of the semiconductor refrigeration unit 3 is exposed in the first air duct, the radiator at the hot end of the semiconductor refrigeration unit 3 is exposed in the concave part 24, the cross-flow fan 16 sucks external atmosphere from the air inlet 12, and air flow is cooled by the cold end of the semiconductor refrigeration unit 3 in the first air duct and then is discharged into the kitchen through the air outlet 13 for refrigeration; meanwhile, the centrifugal fan 71 can be started, the third air opening 723 is closed, the centrifugal fan 71 sucks air flow in the disinfection cavity 21 from the air outlet 22, the air flow returns to the disinfection cavity 21 through the air return opening 23 after passing through the communicating box body 72, and the air flow discharged by the air return opening 23 can enter the inner cavity of the concave part 24 through the first through hole 241 to dissipate heat of the heat dissipation cavity 31 and then returns to the disinfection cavity 21 through the second through hole 242 as the air return opening 23 sequentially faces the first through hole 241 and the second through hole 242.

Claims

1. A disinfection cabinet, which comprises

A housing (1); and

the inner container (2) is arranged in the shell (1) and is provided with a disinfection cavity (21), and an interlayer (11) is formed between the outer wall of the inner container (2) and the inner wall of the shell (1);

the method is characterized in that: the shell (1) is provided with an air inlet (12) and an air outlet (13) which are communicated with the interlayer (11) and outside air, and a first air channel between the air inlet (12) and the air outlet (13) is formed in the interlayer (11);

an air outlet (22) and an air return opening (23) which are communicated with the disinfection cavity (21) and the interlayer (11) are formed in the inner container (2), and a second air channel between the air outlet (22) and the air return opening (23) is formed in the interlayer (11);

and also comprises

The semiconductor refrigeration unit (3) is positioned in the first air channel, a concave part (24) is formed by inwards sinking the inner container (2) corresponding to the outer wall of the semiconductor refrigeration unit (3), a first flow through hole (241) and a second flow through hole (242) which are communicated with the inner cavity of the concave part (24) and the disinfection cavity (21) are formed in the side wall of the concave part (24), and the air return opening (23) sequentially faces the first flow through hole (241) and the second flow through hole (242), so that air discharged from the air return opening (23) enters the inner cavity of the concave part (24) through the first flow through hole (241) and then returns to the disinfection cavity (21) through the second flow through hole (242); and

the power output end of the first driving mechanism (4) is in transmission connection with the semiconductor refrigeration unit (3) and is used for driving the cold end and the hot end of the semiconductor refrigeration unit (3) to overturn so that the disinfection cabinet has at least two states:

in a first state, the cold end of the semiconductor refrigeration unit (3) is exposed in the first air duct, and the hot end of the semiconductor refrigeration unit (3) is exposed in the concave part (24);

in the second state, the hot end of the semiconductor refrigeration unit (3) is exposed in the first air duct.

2. A disinfection cabinet as claimed in claim 1, wherein: the air outlet (13) is positioned on the front side of the shell (1), and a panel (14) capable of opening or closing the air outlet (13) is installed on the shell (1).

3. A disinfection cabinet as claimed in claim 2, wherein: the two ends of the panel (14) are rotatably connected to the shell (1) through pin shafts, and a second driving mechanism (5) capable of driving the panel (14) to rotate around the axis of the pin shaft is arranged in the interlayer (11).

4. A disinfection cabinet as claimed in claim 3, wherein: the back of the panel (14) is provided with a supporting seat (141), and the second driving mechanism (5) comprises

The first end of the connecting rod (51) is hinged to the supporting seat (141), and the second end of the connecting rod is provided with a waist-shaped hole (511) extending along the length direction of the connecting rod; and

and the electric push rod (52) is fixed relative to the shell (1), and the driving end of the electric push rod is rotationally connected in the waist-shaped hole (511) and can slide in the waist-shaped hole (511).

5. A disinfection cabinet as claimed in claim 1, wherein: the disinfection cabinet also comprises a heating device (6) which can heat the airflow flowing through the second air channel.

6. A disinfection cabinet as claimed in claim 5, wherein: the interlayer (11) is internally provided with an air supply device (7), a second air channel is formed inside the air supply device (7), the inlet of the second air channel is communicated with the air outlet (22), the outlet of the second air channel is communicated with the air return opening (23), and the air supply device (7) can convey airflow from the inlet of the second air channel to the outlet of the second air channel.

7. A disinfection cabinet as claimed in claim 6, wherein: the air supply device (7) is internally provided with a third air channel, an inlet of the third air channel is communicated with the air outlet (22), an outlet of the third air channel is communicated with the first air channel through an interlayer (11), the air supply device (7) can convey airflow from the inlet of the third air channel to the outlet of the third air channel, and a valve (73) capable of opening or closing the outlet of the third air channel is installed in the interlayer (11).

8. A disinfection cabinet as claimed in claim 7, wherein: the air supply device (7) comprises

The centrifugal fan (71) is provided with an air suction port and an air exhaust port, can suck air flow from the air suction port and exhaust the air flow from the air exhaust port, and the air suction port of the centrifugal fan (71) is an inlet of the second air channel and an inlet of the third air channel; and

and the communicating box body (72) is provided with a first air port (721), a second air port (722) and a third air port (723), the first air port (721) of the communicating box body (72) is communicated with an exhaust port of the centrifugal fan (71), the second air port (722) of the communicating box body (72) is an outlet of the second air duct, and the third air port (723) of the communicating box body (72) is an outlet of the third air duct.

9. A disinfection cabinet as claimed in claim 8, wherein: the valve (73) comprises

A valve plate (731) having both ends rotatably connected to the communicating case (72) through a rotating shaft (7311); and

and the power output end of the third driving piece (732) is in transmission connection with the rotating shaft (7311) and is used for driving the valve plate (731) to rotate around the axis of the rotating shaft (7311) so as to open or close the third air port (723).

10. A disinfection cabinet as claimed in any one of claims 1 to 9, wherein: and a cross-flow fan (16) capable of conveying airflow from the inlet of the first air duct to the outlet of the first air duct is arranged in the first air duct.

11. A disinfection cabinet as claimed in any one of claims 1 to 9, wherein: the number of the semiconductor refrigerating units (3) is at least two, the semiconductor refrigerating units are sequentially arranged along the extending direction of the first air channel, and the first driving mechanisms (4) correspond to the semiconductor refrigerating units (3) one by one.

12. A disinfection cabinet as claimed in any one of claims 1 to 9, wherein: the first driving mechanism (4) is arranged in the interlayer (11) and comprises

A first base (41) fixed with respect to said casing (1);

a rotating shaft (42) which is rotatably connected to the first base (41), and the first end of which is in transmission connection with the semiconductor refrigeration unit (3);

and a first driving member (43), the power output shaft of which is connected with the second end of the rotating shaft (42) and is used for driving the rotating shaft (42) to rotate.

13. A disinfection cabinet as claimed in claim 12, wherein: the first driving mechanism (4) also comprises

A second base (44) connected to a first end of the rotating shaft (42);

a screw (45) rotatably connected to the second base (44) and arranged in the height direction of the semiconductor refrigeration unit (3);

one end of the sliding seat (46) is connected to the screw rod (45) in a threaded manner, and the other end of the sliding seat is connected with the semiconductor refrigeration unit (3); and

and a power output shaft of the second driving piece (47) is in transmission connection with the screw rod (45) and is used for driving the screw rod (45) to rotate.

14. A disinfection cabinet as claimed in claim 13, wherein: the first driving mechanism (4) further comprises a guide rod (48), the guide rod (48) is connected to the second base (44) and arranged in parallel to the screw rod (45), and correspondingly, a guide hole (461) for the guide rod (48) to pass through is formed in the sliding seat (46).

15. A disinfection cabinet as claimed in claim 13, wherein: the first driving mechanism (4) further comprises a driving gear (49a) and a driven gear (49b) which are meshed with each other, the driven gear (49b) is arranged at one end of the screw rod (45), and the driving gear (49a) can be rotatably connected to the second base (44) and is connected with a power output shaft of the second driving piece (47).