CN213721677U

CN213721677U - Hand drier capable of being used as air sterilizer

Info

Publication number: CN213721677U
Application number: CN202021768055.4U
Authority: CN
Inventors: 包兆康
Original assignee: Taizhou Meilongya Electric Appliance Co ltd
Current assignee: Taizhou Meilongya Electric Appliance Co ltd
Priority date: 2020-08-22
Filing date: 2020-08-22
Publication date: 2021-07-20
Anticipated expiration: 2030-08-22

Abstract

The utility model relates to a hand dryer which can be used as an air sterilizer, comprising a hand dryer fan and an air inlet channel which are arranged in a casing, wherein an ultraviolet generator for sterilizing and disinfecting the air flow in the air inlet channel is arranged in the air inlet channel, and the ultraviolet generator is provided with an anti-leakage structure for preventing ultraviolet rays from being emitted from an air inlet of the air inlet channel; the downstream of the air inlet channel is provided with a disinfection fan, and the disinfection fan discharges the disinfected clean airflow in the air inlet channel to the outside through the disinfection air channel. When the hand dryer works, the ultraviolet rays emitted by the ultraviolet ray generator can kill bacterial viruses flowing through the air, so that the air flow flowing through the interior of the hand dryer and the blown air are relatively clean, the secondary pollution of the bacteria and viruses in the air flow into the hand dryer and the blown air to hands and the surrounding environment are prevented, meanwhile, a user and other people cannot be burnt by the ultraviolet rays, and the use is very safe; the disinfection fan can also discharge the disinfected clean airflow, so that the aim of disinfecting the outside air is fulfilled.

Description

Hand drier capable of being used as air sterilizer

Technical Field

The utility model relates to a hand drier used in a bathroom.

Background

The hand drier is also called hand drier, and is an electric appliance installed in a bathroom and used for drying moisture on hands by hot air. The common hand dryer comprises a shell, wherein an air inlet and a warm air outlet are formed in the shell, an air inlet channel, a fan, an air outlet channel, a heater and a control unit are arranged in the shell, and the control unit controls the fan and the heater to work and stop. When the hand dryer is used, washed hands extend to the position below the warm air outlet, hot air is sent out to dry the hands during the work of the hand dryer, and when the hands leave the warm air outlet, the hand dryer stops working.

Since the bathroom is usually a public place and the environment is relatively humid, bacteria and viruses are very easily present in the air of the bathroom, and in the working process of the hand dryer, the bacteria and the viruses enter the hand dryer along with the air flow, a part of the bacteria and the viruses are also attached to the interior of the hand dryer and further breed more, so that the bacteria and the viruses in the air flow and the bacteria and the viruses breeding in the interior of the hand dryer are blown out along with warm air when the hand dryer works, and then the bacteria and the viruses are diffused to the air on the hands, the body of a user, the wall nearby and the surrounding air to cause secondary pollution and even diseases; in addition, most of the existing hand dryers can only be used for drying hands, and the function is single.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hand dryer that can regard as air disinfector to use, can be used for drying the hand and can carry out ambient air disinfection again.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the hand dryer capable of being used as an air sterilizer comprises a shell, wherein a hand drying fan and an air inlet channel are arranged in the shell, an ultraviolet generator for sterilizing and disinfecting air flow in the air inlet channel is arranged in the air inlet channel, and the ultraviolet generator is provided with a leakage-proof structure for preventing ultraviolet rays from being emitted outwards from an air inlet of the air inlet channel; the downstream of the air inlet channel is provided with a disinfection fan, and the disinfection fan discharges the disinfected clean airflow in the air inlet channel to the outside through a disinfection air channel communicated with the outside.

The further optimized technical scheme is that the ultraviolet generator comprises a UVC ultraviolet lamp tube, the anti-leakage structure is an anti-leakage baffle, and the anti-leakage baffle is arranged between the UVC ultraviolet lamp tube and an air inlet of the air inlet channel and used for preventing ultraviolet rays from being emitted outwards from the air inlet.

The further optimized technical scheme is that the wavelength of the UVC ultraviolet lamp tube is 200nm-300 nm.

The further optimized technical scheme is that the wavelength of the UVC ultraviolet lamp tube is 254 nm.

The further optimized technical proposal is that a photocatalyst filter screen plate for cleaning air sucked into the air inlet channel is arranged at the position close to the air inlet in the air inlet channel.

The further optimized technical scheme is that the inner wall of the air inlet channel is provided with photocatalyst.

The further optimized technical scheme is that the photocatalyst on the air inlet channel is a photocatalyst coating on the inner wall of the air inlet channel.

The further optimized technical scheme is that the photocatalyst is nano titanium dioxide.

The further optimized technical proposal is that the air inlet is transversely arranged on the bottom surface of the machine shell and is close to the back bottom plate of the machine shell; the air inlet channel is flat and extends upwards from the bottom of the machine shell, the rear wall of the air inlet channel is formed by the back bottom plate, the front wall of the air inlet channel is formed by the fan cover plate of the hand dryer, the lower part of the front wall of the air inlet channel is provided with a concave cavity, and the UVC ultraviolet lamp tube is transversely arranged in the concave cavity; and a clean air outlet of the disinfection air channel is formed in the side wall of the upper part of the air inlet channel.

The further optimized technical proposal is that a photocatalyst filter screen plate for cleaning air sucked into the air inlet channel is arranged at the position close to the air inlet in the air inlet channel; photocatalyst coatings are arranged on the inner wall of the air inlet channel, the wall surface of the concave cavity and the surface of the anti-leakage baffle or photocatalyst is contained in manufacturing materials.

The utility model has the advantages that: the ultraviolet generator is arranged in the air inlet channel of the hand dryer, when the hand dryer works, the ultraviolet generator emits ultraviolet rays with proper wavelength to irradiate the air inlet channel, when airflow in the air inlet channel passes through an ultraviolet irradiation area, the ultraviolet rays can destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in microbial organism cells in the airflow, so that growing cells die or regenerative cells die, bacteria and viruses in the air inlet airflow are killed, and therefore, the bacteria and viruses in the air inlet airflow are killed from an air inlet source, the airflow flowing through the interior of the hand dryer and the air blown out from the hand dryer are relatively clean, and secondary pollution to the interior of the hand dryer and the surrounding environment caused by the blown air in the air inlet airflow due to the bacteria and viruses is greatly prevented; in addition, because the ultraviolet generator is arranged in the air inlet channel, the leakage-proof structure can prevent ultraviolet rays from leaking out of the air inlet of the hand dryer, thereby ensuring that a user and other people are not burnt by the ultraviolet rays while sterilizing the ultraviolet rays and ensuring safe use; the cleaning air flow after disinfection in the air inlet channel can be discharged to the outside by arranging the disinfection fan, the effect of disinfecting the outside air is achieved, and the purposes of air disinfection and hand drying of the hand dryer are achieved.

Drawings

Fig. 1 is an exploded view of an embodiment of the present invention;

FIG. 2 is an assembled perspective view of FIG. 1;

FIG. 3 is a schematic perspective view of the back panel of the enclosure of FIG. 2 with the back panel removed;

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

fig. 6 is a sectional view of the a-a step of fig. 4.

In the figure, 1 is a shell, 2 is a back bottom plate, 3 is an air inlet channel, 31 is an air inlet, 32 is a clean air outlet, 4 is an ultraviolet lamp tube, 41 is a leakage-proof baffle, 42 is a lamp tube positioning box, 5 is a photocatalyst filter screen plate, 6 is a main control plate, 7 is an inductor, 8 is an air outlet channel, 81 is a warm air outlet, 82 is a heater, 9 is a hand drying fan, 10 is a disinfection fan, 11 is a noise-reducing heat-preserving inner shell, 12 is a fan cover plate, 13 is a shock-absorbing piece, and an arrow indicates the air flow flowing direction.

Detailed Description

The embodiment of the hand dryer which can be used as an air sterilizer of the utility model is shown in figures 1 to 6, which comprises a casing, wherein an air inlet channel 3, a hand dryer 9 and an air outlet channel 8 are arranged in the casing, the casing consists of a casing 1 and a back bottom plate 2 which is covered on the rear side of the casing, a noise-reduction heat-preservation inner casing 11 is arranged in the inner cavity of the casing 1 in an inosculating way, the inner casing is a casing structure with a closed bottom, three closed sides and an open side for air outlet, when the inner cavity of the casing 1 can not be inosculated with the noise-reduction heat-preservation inner casing 11, the filling heat-preservation material can be adopted to enable the inner cavity to be inosculated and clung; a hand dryer fixing seat and an air outlet channel 8 communicated with a warm air outlet 81 are arranged on the noise-reducing and heat-insulating inner shell 11, and a heater 82 is arranged in the air outlet channel close to the warm air outlet 81; hand drier 9 is installed in the hand drier fixing base of the heat preservation inner shell that makes an uproar that falls, carries out axial fixity to the hand drier through fan apron 12 of fixing on casing 1, in order to further damping and noise reduction, still pressure equipment has a shock attenuation piece 13 between fan apron 12 and hand drier 9, and heat preservation inner shell 11 and the shock attenuation piece 13 of making an uproar that makes an uproar are made by foamed rubber, PU or EVA material, have shock attenuation and syllable-dividing effect. In fig. 5, 6 is a main control board, and 7 is an induction probe.

As shown in fig. 3-6, the air inlet 31 of the air inlet channel is transversely arranged on the bottom wall of the casing near the back bottom plate, the air inlet channel 3 is flat and extends upwards from the bottom of the casing to the top of the casing, the back bottom plate 2 forms the back wall of the air inlet channel, the fan cover plate 12 forms the front wall of the air inlet channel, and the corresponding parts of the casing 1 form the top, bottom and side walls of the air inlet channel. An ultraviolet generator is arranged at the lower part of the air inlet channel 3, namely the upstream of the air inlet channel, ultraviolet rays generated by the ultraviolet generator can form an ultraviolet irradiation area in the air inlet channel, and when air flow entering the air inlet channel flows through the irradiation area, bacteria and viruses in the air flow can be killed by the ultraviolet rays, so that the effects of sterilization and disinfection are achieved; in order to prevent the ultraviolet rays from leaking and burning the user or other people when the hand dryer works, the ultraviolet ray generator is also provided with a leakage-proof structure for preventing the ultraviolet rays from being emitted to the outside from the air inlet of the air inlet channel. Be equipped with disinfection fan 10 in inlet air channel's low reaches, disinfection fan discharges the external world through the disinfection wind passageway with external intercommunication the clean air current after disinfecting in with inlet air channel, disinfection wind channel's clean wind outlet 32 is seted up on inlet air channel's upper portion be inlet air channel low reaches, specifically in the upper portion position of inlet air channel lateral wall, like this, disinfection fan 10 just can be with the clean air current after the disinfection among the inlet air channel from clean wind outlet 32 discharge to hand dryer external environment, reach the sterile effect to the external air. Through setting up disinfection fan 10, make the hand dryer possess the hand function of drying and the function to the disinfection of outside air simultaneously, become air disinfection, dry dual-purpose equipment of hand.

In this embodiment, the uv generator is a UVC uv lamp 4, a cavity is provided at the lower part of the front wall of the air intake channel, the cavity is formed by a lamp positioning box 42 installed in the housing, the box has three side walls, the lower side facing the air intake is open, and the UVC uv lamp is installed in the lamp positioning box in a transverse direction; the anti-leakage structure is formed by an anti-leakage baffle 41, the cross section of the anti-leakage baffle 41 is L-shaped, one side plate of the anti-leakage baffle is fixed on the cover plate of the fan, and the other side plate is blocked between the ultraviolet lamp tube 4 and the air inlet 31, so that the anti-leakage structure plays a role in preventing ultraviolet rays from being emitted outwards from the air inlet, and the safety of ultraviolet sterilization is ensured. Certainly, when the hand dryer is implemented specifically, the air inlet channel can adopt other structural forms according to different structures of the whole body of the hand dryer, and the ultraviolet generator can also adopt other ultraviolet lamps with sterilizing effect and leakage-proof structures for preventing ultraviolet rays from being emitted from the air inlet.

In specific application, the UVC ultraviolet lamp tube is preferably any one of the wavelength ranges from 200nm to 300nm, and is preferably a quartz ultraviolet lamp tube with the wavelength of 254nm, and the wavelength of 254nm (253.7nm) is consistent with the frequency of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in the organism cells of the microorganisms, so that the UVC ultraviolet lamp tube is the wavelength which is most easily absorbed by the microorganisms, viruses and bacteria can be killed by destroying the DNA structure of the microorganisms in a very short time, and the optimal sterilization effect can be achieved.

For better sterilization, the air inlet channel is further provided with a photocatalyst filter screen plate 5, and the photocatalyst filter screen plate is arranged at the lower part of the light positioning box 42 and is positioned below the leakage-proof baffle 41 and close to the air inlet 31; in addition, a photocatalyst coating is coated on the inner wall of the air inlet channel, such as the inner side of the back bottom plate 2, the inner side of the fan cover plate 12, the wall surface of the concave cavity and the surface of the leakage-proof baffle plate 41, or a photocatalyst is added into the manufacturing materials when the back bottom plate, the fan cover plate, the leakage-proof baffle plate and the lamp tube positioning box are manufactured. The photocatalyst can generate free hydroxyl and active oxygen with extremely strong oxidizing ability under the irradiation of ultraviolet rays, has a very strong photooxidation-reduction function, can oxidize and decompose various organic compounds, destroy cell membranes of bacteria and proteins of solidified viruses, kill the bacteria and decompose organic pollutants, and decompose the organic pollutants into pollution-free water and carbon dioxide, so the photocatalyst has extremely strong functions of sterilization, deodorization, mildew prevention, pollution prevention, self cleaning and air purification. Through set up photocatalyst filter plate and photocatalyst coating in inlet air channel, played the effect of further disinfecting, air current in the clean passageway, can also prevent that the bacterium virus from breeding in inlet air channel simultaneously. In this embodiment, the photocatalyst is nano titanium dioxide.

The disinfection process of the hand dryer of this embodiment is as follows: referring to fig. 4 and 5, arrows in the figures are air flow direction, after hand drying starts, the hand drying fan 9 and the disinfection fan 10 are started simultaneously, the ultraviolet lamp tube 4 is lighted, outside air is sucked from the air inlet 31, enters the air inlet channel 3 through the photocatalyst filter screen plate 5, the photocatalyst disinfects, sterilizes and deodorizes the passing air flow after being irradiated by ultraviolet rays, then the air flow passes through the ultraviolet lamp tube irradiation area, the high-intensity ultraviolet rays thoroughly disinfect the air flow, one part of the disinfected air flow is discharged into the air outlet channel by the hand drying fan 9, is heated by the heater 82 and then is discharged from the warm air outlet 81 for hand drying, and the other part of the disinfected air flow is discharged back to the outside air from the clean air outlet 32 by the disinfection fan 10, so that the outside air is disinfected by suction-disinfection-discharge multiple cycles. In addition, through the setting to the main control board, can also realize the function of disinfection air alone, the ultraviolet fluorescent tube is lighted this moment, only has the disinfection fan to start.

Claims

1. Can regard as hand dryer that air disinfector used, including the casing, be equipped with hand dryer and inlet air duct in the casing, its characterized in that: an ultraviolet generator for sterilizing and disinfecting air flow in the air inlet channel is arranged in the air inlet channel, and the ultraviolet generator is provided with a leakage-proof structure for preventing ultraviolet rays from being emitted outwards from an air inlet of the air inlet channel; the downstream of the air inlet channel is provided with a disinfection fan, and the disinfection fan discharges the disinfected clean airflow in the air inlet channel to the outside through a disinfection air channel communicated with the outside.

2. A hand dryer usable as an air sterilizer as claimed in claim 1, wherein: the ultraviolet generator comprises a UVC ultraviolet lamp tube, the leakage-proof structure is a leakage-proof baffle, and the leakage-proof baffle is arranged between the UVC ultraviolet lamp tube and an air inlet of the air inlet channel and used for preventing ultraviolet rays from being emitted outwards from the air inlet.

3. A hand dryer usable as an air sterilizer as claimed in claim 2, wherein: the wavelength of the UVC ultraviolet lamp tube is 200nm-300 nm.

4. A hand dryer usable as an air sterilizer as claimed in claim 3, wherein: the wavelength of the UVC ultraviolet lamp tube is 254 nm.

5. A hand dryer usable as an air sterilizer as claimed in any one of claims 1 to 4, wherein: and a photocatalyst filter screen plate for cleaning air sucked into the air inlet channel is arranged in the air inlet channel and is close to the air inlet.

6. A hand dryer usable as an air sterilizer as claimed in any one of claims 1 to 4, wherein: the inner wall of the air inlet channel is provided with photocatalyst.

7. A hand dryer usable as an air sterilizer as claimed in claim 6, wherein: the photocatalyst on the air inlet channel is a photocatalyst coating on the inner wall of the air inlet channel.

8. A hand dryer usable as an air sterilizer as claimed in claim 7, wherein: the photocatalyst is nano titanium dioxide.

9. A hand dryer usable as an air sterilizer as claimed in any one of claims 2 to 4, wherein: the air inlet is transversely arranged on the bottom surface of the shell and is close to the back bottom plate of the shell; the air inlet channel is flat and extends upwards from the bottom of the machine shell, the rear wall of the air inlet channel is formed by the back bottom plate, the front wall of the air inlet channel is formed by the fan cover plate of the hand dryer, the lower part of the front wall of the air inlet channel is provided with a concave cavity, and the UVC ultraviolet lamp tube is transversely arranged in the concave cavity; and a clean air outlet of the disinfection air channel is formed in the side wall of the upper part of the air inlet channel.

10. A hand dryer usable as an air sterilizer as claimed in claim 9, wherein: a photocatalyst filter screen plate for cleaning air sucked into the air inlet channel is arranged in the air inlet channel and close to the air inlet; photocatalyst coatings are arranged on the inner wall of the air inlet channel, the wall surface of the concave cavity and the surface of the anti-leakage baffle or photocatalyst is contained in manufacturing materials.