CN219531335U

CN219531335U - Purifying device and refrigerator

Info

Publication number: CN219531335U
Application number: CN202320004937.0U
Authority: CN
Inventors: 张军; 张永飞; 王喆
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-08-15
Anticipated expiration: 2033-01-03

Abstract

The utility model belongs to the technical field of electric appliances, and particularly relates to a purifying device and a refrigerator. The purification device includes: the shell is provided with an air inlet and an air outlet; the photocatalyst component is arranged in the shell to divide the shell into a first cavity communicated with the air inlet and a second cavity communicated with the air outlet; the ultraviolet lamp is arranged in the second cavity to emit ultraviolet rays and irradiate the photocatalyst component; and the reflecting piece is arranged in the first cavity and used for reflecting ultraviolet rays transmitted through the photocatalyst component. The purifying device and the refrigerator have high purifying efficiency.

Description

Purifying device and refrigerator

Technical Field

The utility model belongs to the technical field of electric appliances, and particularly relates to a purifying device and a refrigerator.

Background

The refrigerator is a household appliance for storing food materials, and at present, domestic refrigerators mainly keep food fresh at low temperature, but the low temperature can only reduce the propagation and growth speed of microorganisms, and can not solve the problem of refrigerator peculiar smell and bacterial infection caused by microorganisms in the storage process of the food materials.

In order to solve this problem, a purification module is generally provided in a refrigerator, but the purification efficiency of the photocatalysis technology in the current purification technology is low.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a purifying device and a refrigerator, and aims to at least solve the technical problem that the purifying efficiency of the photocatalysis technology in the purifying technology is low to a certain extent.

The technical scheme of the utility model is as follows:

the purifying device is characterized by comprising: the shell is provided with an air inlet and an air outlet; the photocatalyst component is arranged in the shell to divide the shell into a first cavity communicated with the air inlet and a second cavity communicated with the air outlet; the ultraviolet lamp is arranged in the second cavity to emit ultraviolet rays and irradiate the photocatalyst component; and the reflecting piece is arranged in the first cavity and used for reflecting ultraviolet rays transmitted through the photocatalyst component.

Because the shell is provided with the air inlet and the air outlet, the photocatalyst component is arranged in the shell to divide the shell into a first cavity communicated with the air inlet and a second cavity communicated with the air outlet, the ultraviolet lamp is arranged in the second cavity to emit ultraviolet rays and irradiate the photocatalyst component, so that the ultraviolet rays irradiate the end face of the photocatalyst component, which faces the ultraviolet lamp, and the ultraviolet rays excite the photocatalyst component to enable the photocatalyst component to generate electron hole pairs, the electron hole pairs generated by the photocatalyst component have extremely strong capability of competing for electrons, air sequentially enters the second cavity from the air inlet, the first cavity and the photocatalyst component, and bacteria and peculiar smell molecules in the air can undergo oxidation reaction with the electron hole pairs in the second cavity to cause death of the bacteria and degradation of the peculiar smell molecules, and finally harmful substances such as carbon dioxide, water and the like are generated, the purification efficiency is improved, meanwhile, oxygen and water in the air are deprived of electrons by electron hole pairs, ROS (reactive oxygen species ) active substances such as hydroxyl free radicals, oxygen free radicals and the like are generated, the ROS active substances react with bacteria and odor molecules in the air, and are discharged to the outside from an air outlet, and can react with bacteria and pesticides on the surface of an external food material, so that the bacteria are killed, the pesticides are degraded, the food material safety is ensured, the reflecting piece is arranged in the first cavity to reflect the ultraviolet rays transmitted through the photocatalyst component, the ultraviolet rays emitted by the ultraviolet lamp irradiate the reflecting piece through the photocatalyst component, the ultraviolet rays reflected by the reflecting piece irradiate the end face of the photocatalyst component, which is far away from the ultraviolet lamp, and the ultraviolet rays excite the photocatalyst component to generate electron hole pairs, in the first chamber, the oxidation reaction can take place for bacterium and peculiar smell molecule and electron hole pair in the air, has increased the utilization efficiency of ultraviolet ray and photocatalyst subassembly, has improved purification efficiency, simultaneously, because the ultraviolet ray that the reflector reflection can shine on the terminal surface that photocatalyst subassembly deviates from the ultraviolet lamp, avoid ultraviolet irradiation to the casing on, can prevent that the casing from ageing, guaranteed the life of casing.

In some embodiments, the first chamber is located outside the second chamber, and air sequentially enters the second chamber from the air inlet, the first chamber and the photocatalyst component, and is discharged from the air outlet, so that smooth flow of air is ensured.

In some embodiments, the air inlet and the first chamber are both annular in cross-sectional shape, further increasing the efficiency of the utilization of the ultraviolet light and photocatalyst assembly.

In some embodiments, the reflector is coated on an inner wall of the housing to avoid encroachment of the reflector into the space of the first chamber.

In some embodiments, the photocatalyst assembly comprises: an annular base material arranged in the shell; the catalyst is loaded on the annular substrate, the annular substrate is used for loading the catalyst, the contact area between odor molecules in air and the catalyst can be increased, the reaction time of the odor molecules is prolonged, the purification effect is ensured, and meanwhile, the space can be saved.

In some embodiments, the length of the ultraviolet lamp is less than or equal to the length of the annular substrate, ensuring that the ultraviolet lamp can be completely disposed within the second chamber.

In some embodiments, the ultraviolet lamp is in a tubular shape, and the ultraviolet lamp is concentric with the annular substrate, so that ultraviolet rays emitted by the ultraviolet lamp can uniformly irradiate on the annular substrate at an angle, and the catalyst is excited to fully generate electron hole pairs, so that the utilization rate of the ultraviolet rays is improved, meanwhile, a rotating mechanism is not required, the cost is reduced, and the reliability is improved.

In some embodiments, the purification apparatus further comprises: the support piece is arranged in the first cavity and connected with the photocatalyst component, and the ultraviolet lamp is arranged on the support piece, so that the stability of installation of the photocatalyst component and the ultraviolet lamp is ensured.

In some embodiments, the ultraviolet lamp is disposed in the middle of the support member to ensure that the ultraviolet light can uniformly irradiate the photocatalyst assembly.

In some embodiments, the ultraviolet lamp comprises a mercury lamp or a high pressure discharge lamp, causing the ultraviolet lamp to emit ultraviolet light.

In some embodiments, when the ultraviolet lamp is a high pressure discharge lamp, the ultraviolet lamp comprises: a first electrode; the second electrode is arranged in the first electrode; at least one light-transmitting piece is arranged between the first electrode and the second electrode, one of the at least one light-transmitting piece is attached to the inner wall of the first electrode, and the ultraviolet wavelength selection range is wider due to the high-voltage breakdown mode.

In some embodiments, the ultraviolet lamp further comprises: and the two fixed terminals are respectively arranged at the two ends of the first electrode, the second electrode and at least one light-transmitting piece, so that the first electrode, the second electrode and the at least one light-transmitting piece can be conveniently installed.

In some embodiments, when the number of the light-transmitting pieces is two, the light-transmitting pieces comprise a first light-transmitting piece jointed with the inner wall of the first electrode and a second light-transmitting piece jointed with the inner wall of the second electrode, so that uniform discharge is ensured; the second light-transmitting piece is provided with a reflecting layer on the end face deviating from the second electrode so as to reflect ultraviolet rays and further improve the utilization efficiency of the ultraviolet rays.

In some embodiments, the purifying device further comprises a fan arranged on the shell, the fan is arranged at the air outlet, so that air enters the second cavity from the air inlet, the first cavity and the photocatalyst component in sequence, and is discharged from the air outlet, and the circulating flow of the air is accelerated.

In some embodiments, the purification device further comprises a controller electrically connected to the blower and the ultraviolet lamp; the controller obtains a shutdown instruction, controls the fan to be turned off according to the shutdown instruction, and obtains a delayed shutdown signal, and controls the ultraviolet lamp to be turned off according to the delayed shutdown signal, so that odor molecules adsorbed on the photocatalyst component are removed, and the photocatalyst component is regenerated.

In some embodiments, the purification device further comprises a timer electrically connected to the controller; the controller obtains a closing time value timed by the timer, compares the closing time value with a preset closing time value, and generates a time delay closing signal under the condition that the closing time value is larger than or equal to the preset closing time value so as to remove peculiar smell molecules adsorbed on the photocatalyst component and enable the photocatalyst component to be regenerated.

Based on the same inventive concept, the utility model also provides a refrigerator comprising the purifying device.

The beneficial effects of the utility model at least comprise:

the photocatalyst technology is a common air purification technology, and an LED/ultraviolet lamp tube is adopted to directly irradiate on the photocatalyst module, however, the mode can lead the back of the photocatalyst module to be unable to irradiate, so that the utilization efficiency of the photocatalyst is reduced, the purification efficiency is affected, and meanwhile, the transmitted light can possibly lead to ageing of a shell and influence the service life of the shell.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a purification apparatus of the present embodiment;

FIG. 2 is a cross-sectional view of the purification apparatus of FIG. 1;

FIG. 3 is a top view of the purification apparatus of FIG. 1;

FIG. 4 is a bottom view of the purification device of FIG. 1;

fig. 5 is a schematic view of the structure of the ultraviolet lamp of the purifying apparatus of fig. 1.

In the accompanying drawings:

the device comprises a shell 10, an air inlet 101, an air outlet 102, a first chamber 103, a second chamber 104 and support legs 105;

a photocatalyst element 20, an annular base 201;

the ultraviolet lamp 30, the first electrode 301, the second electrode 302, the light-transmitting member 303, the first light-transmitting member 3031, the second light-transmitting member 3032 and the fixed terminal 304;

a reflecting member 40;

a support 50;

a blower 60.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all the directional indicators in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model is described below with reference to specific embodiments in conjunction with the accompanying drawings:

the purification device and the refrigerator provided by the embodiment aim to at least solve the technical problem that the purification efficiency of the photocatalysis technology in the purification technology is low to a certain extent.

FIG. 1 is a schematic view of the purification apparatus of the present embodiment; FIG. 2 is a cross-sectional view of the purification apparatus of FIG. 1; fig. 4 is a bottom view of the purification device of fig. 1. Referring to fig. 1, 2 and 4, the purifying apparatus of the present embodiment includes: the ultraviolet lamp comprises a housing 10, a photocatalyst assembly 20, an ultraviolet lamp 30 and a reflector 40. The housing 10 is provided with an air inlet 101 and an air outlet 102. The photocatalyst assembly 20 is disposed in the housing 10 to divide the housing 10 into a first chamber 103 communicating with the air inlet 101 and a second chamber 104 communicating with the air outlet 102. The ultraviolet lamp 30 is provided in the second chamber 104 to emit ultraviolet rays and irradiate the photocatalyst assembly 20. The reflecting member 40 is disposed in the first chamber 103 to reflect the ultraviolet rays transmitted through the photocatalyst assembly 20.

The cross-sectional shape of the housing 10 is cylindrical.

The first chamber 103 communicates with the second chamber 104 through the photocatalyst assembly 20.

Air sequentially passes through the air inlet 101, the first chamber 103 and the photocatalyst component 20, enters the second chamber 104, and is discharged from the air outlet 102.

The photocatalyst technology is a common air purification technology, and an LED/ultraviolet lamp tube is adopted to directly irradiate on a photocatalyst module, however, the mode can lead the back of the photocatalyst module to be unable to irradiate, so that the utilization efficiency of a photocatalyst is reduced, the purification efficiency is influenced, and meanwhile, the transmitted light can possibly lead to ageing of a shell and influence the service life of the light shell.

Since the casing 10 is provided with the air inlet 101 and the air outlet 102, the photocatalyst component 20 is arranged in the casing 10 to divide the casing 10 into a first chamber 103 communicated with the air inlet 101 and a second chamber 104 communicated with the air outlet 102, the ultraviolet lamp 30 is arranged in the second chamber 104 to emit ultraviolet rays and irradiate the photocatalyst component 20, so that the ultraviolet rays irradiate the end face of the photocatalyst component 20, which faces the ultraviolet lamp 30, and the ultraviolet rays excite the photocatalyst component 20 to enable the photocatalyst component 20 to generate electron hole pairs, the electron hole pairs generated by the photocatalyst component 20 have extremely strong capacity of competing for electrons, air sequentially enters the second chamber 104 from the air inlet 101, the first chamber 103 and the photocatalyst component 20, and bacteria and peculiar smell molecules in the air can generate oxidation reaction with the electron hole pairs in the second chamber 104 to enable the bacteria to die, the peculiar smell molecules are degraded to finally generate harmless substances such as carbon dioxide, water and the like, the purification efficiency is improved, meanwhile, oxygen and water in the air are deprived of electrons by electron hole pairs, ROS (reactive oxygen species ) active substances such as hydroxyl radicals, oxygen radicals and the like are generated, the ROS active substances react with bacteria and peculiar smell molecules in the air, and are discharged to the outside from the air outlet 102 and can react with bacteria and pesticides on the surface of the external food material, thereby killing the bacteria and degrading the pesticides, ensuring the safety of the food material, because the reflecting element 40 is arranged in the first chamber 103 to reflect the ultraviolet rays transmitted through the photocatalyst assembly 20, the ultraviolet rays emitted by the ultraviolet lamp 30 irradiate the reflecting element 40 through the ultraviolet rays reflected by the reflecting element 40, so that the ultraviolet rays irradiate the end surface of the photocatalyst assembly 20, which is far away from the ultraviolet lamp 30, the ultraviolet light excites the photocatalyst component 20 so that the photocatalyst component 20 generates electron hole pairs, bacteria and peculiar smell molecules in the air and the electron hole pairs can generate oxidation reaction in the first chamber 103, the utilization efficiency of the ultraviolet light and the photocatalyst component 20 is increased, the purification efficiency is improved, meanwhile, the ultraviolet light reflected by the reflecting piece 40 can irradiate the end face of the photocatalyst component 20, which is far away from the ultraviolet lamp 30, so that the ultraviolet light is prevented from irradiating the shell 10, the aging of the shell 10 can be prevented, and the service life of the shell 10 is ensured.

In some embodiments, in conjunction with fig. 1, in order to avoid the air inlet 101 from being blocked, a plurality of supporting legs 105 are disposed at the edge of the end of the housing 10 where the air inlet 101 is formed, and the housing 10 is supported by the plurality of supporting legs 105, so that the air inlet 101 is exposed, and normal circulation of air is ensured. In the present embodiment, the plurality of legs 105 are uniformly spaced at equal angles on the housing 10, ensuring stability of the support housing 10.

Referring to fig. 2 and fig. 4, in some embodiments, in order to ensure that air can smoothly flow, the first chamber 103 is located outside the second chamber 104, and the air sequentially enters the second chamber 104 from the air inlet 101, the first chamber 103, and the photocatalyst component 20, and is discharged from the air outlet 102, so that bacteria and odor molecules in the air are oxidized with electron hole pairs in the first chamber 103 and the second chamber 104, thereby increasing the utilization efficiency of the ultraviolet light and the photocatalyst component 20 and improving the purification efficiency.

In some embodiments, in conjunction with fig. 2 and fig. 4, in order to further increase the utilization efficiency of the ultraviolet and photocatalyst assembly 20, the cross-sectional shapes of the air inlet 101 and the first chamber 103 are annular, so that air can sufficiently enter the first chamber 103 through the air inlet 101, and bacteria and odor molecules in the air can sufficiently react with electron hole pairs in the first chamber 103, thereby increasing the utilization efficiency of the ultraviolet and photocatalyst assembly 20, improving the purification efficiency, and simultaneously, increasing the air inlet area and ensuring the air intake.

Referring to fig. 2, in some embodiments, in order to prevent the reflective member 40 from occupying the space of the first chamber 103, the reflective member 40 is coated on the inner wall of the housing 10, so that the reflective member 40 can reflect the ultraviolet light transmitted through the photocatalyst assembly 20, thereby ensuring the volume of the first chamber 103, ensuring the space where bacteria and odor molecules in the air react with electron-hole pairs in the first chamber 103, and enabling the bacteria and odor molecules in the air to react with the electron-hole pairs in the first chamber 103.

In this embodiment, the reflecting member 40 may be made of silver, nickel, chromium, etc. so that the inner wall of the housing 10 forms a mirror surface and may reflect ultraviolet rays. Of course, in other embodiments, the reflecting member 40 may be made of aluminum foil, stainless steel, or other metals to reflect the ultraviolet rays transmitted through the photocatalyst element 20.

Referring to fig. 2, in some embodiments, the photocatalyst assembly 20 includes: a ring-shaped substrate 201 and a catalyst. The annular substrate 201 is provided in the housing 10, and the annular substrate 201 is supported by the housing 10. The catalyst is loaded on the annular substrate 201, and the annular substrate 201 can increase the contact area between the odor molecules in the air and the catalyst, increase the reaction time of the odor molecules, ensure the purification effect, and save the space.

In this embodiment, the catalyst may be one or both of titanium dioxide and graphene, or may be a modified product between titanium dioxide and graphene. The annular substrate 201 may be aluminum honeycomb, ceramic honeycomb, foamed ceramic, polyurethane sponge, paper honeycomb, or the like. In the present embodiment, in order to increase the adsorption capacity of the catalyst, a metal oxide such as activated carbon, manganese oxide, or copper oxide may be supported on the annular substrate 201.

Referring to fig. 2, in this embodiment, in order to ensure that the ultraviolet lamp 30 can be completely disposed in the second chamber 104, the length of the ultraviolet lamp 30 is less than or equal to the length of the annular substrate 201, so that the ultraviolet lamp 30 is prevented from being too long to be accommodated in the second chamber 104. In the present embodiment, in order to ensure that the ultraviolet lamp 30 can sufficiently irradiate onto the annular substrate 201, it is preferable that the length of the ultraviolet lamp 30 is equal to the length of the annular substrate 201.

In the prior art, in order to make ultraviolet light well irradiate the photocatalyst, a rotating mechanism is generally added, and the rotating mechanism drives a photocatalyst component or an ultraviolet light source to rotate, so that the problem of the utilization rate of the catalyst can be solved, but the rotating mechanism is complex, the cost is increased, and meanwhile, only part of the catalyst is irradiated in the moving process of the rotating mechanism.

Based on this, in the present embodiment, in order to ensure that the ultraviolet light can uniformly irradiate 360 ° on the annular substrate 201, the ultraviolet lamp 30 is tubular, and the ultraviolet lamp 30 is concentric with the annular substrate 201, that is, the ultraviolet lamp 30 is coaxial with the annular substrate 201, and the distance between each position of the ultraviolet lamp 30 and the annular substrate 201 is consistent, so that the ultraviolet light emitted by the ultraviolet lamp 30 can uniformly irradiate 360 ° on the annular substrate 201, and the catalyst is excited to fully generate electron hole pairs, thereby improving the utilization rate of the ultraviolet light, simultaneously eliminating the need of a rotating mechanism, reducing the cost, and increasing the reliability.

In conjunction with fig. 2, in some embodiments, to ensure stability of the installation of the photocatalyst assembly 20 and the ultraviolet lamp 30, the purification apparatus further comprises: a support 50. The support member 50 is disposed in the first chamber 103 and connected with the photocatalyst assembly 20, the ultraviolet lamp 30 is disposed on the support member 50, and the photocatalyst assembly 20 and the ultraviolet lamp 30 are supported by the support member 50, so that the photocatalyst assembly 20 and the ultraviolet lamp 30 can be conveniently mounted, and meanwhile, the second chamber 104 can be closed to avoid air leakage. In this embodiment, the support 50 may be a support plate.

Referring to fig. 2, in this embodiment, in order to ensure that the ultraviolet light can uniformly irradiate 360 ° on the photocatalyst assembly 20, the ultraviolet lamp 30 is disposed in the middle of the supporting member 50, that is, the ultraviolet lamp 30 is coaxial with the supporting member 50, and the spacing between each position of the ultraviolet lamp 30 and the annular substrate 201 is consistent, so that the ultraviolet light emitted by the ultraviolet lamp 30 can uniformly irradiate 360 ° on the photocatalyst assembly 20, and the catalyst is excited to fully generate electron hole pairs. In the present embodiment, the support 50 has a ring-like cross-sectional shape.

In some embodiments, to cause ultraviolet lamp 30 to emit ultraviolet light, ultraviolet lamp 30 includes a mercury lamp or a high pressure discharge lamp. The mercury lamp can generate ultraviolet rays, is a better device for water sterilization, but is unsafe due to the fact that mercury is contained as a toxic and harmful substance, and can pollute the environment, and the use of mercury-containing products is gradually limited along with the effectiveness of the 'water convention'. The high-pressure discharge lamp may also generate ultraviolet light. Therefore, the ultraviolet lamp 301 is preferably a high-pressure discharge lamp from the viewpoint of securing safety.

Fig. 5 is a schematic structural diagram of an ultraviolet lamp of the purifying apparatus in fig. 1, and referring to fig. 5, in this embodiment, when the ultraviolet lamp 30 is a high-pressure discharge lamp, the ultraviolet lamp 30 includes: a first electrode 301, a second electrode 302 and at least one light transmissive member 303. The second electrode 302 is disposed within the first electrode 301. At least one light-transmitting member 303 is disposed between the first electrode 301 and the second electrode 302, one light-transmitting member 303 of the at least one light-transmitting member 303 is attached to the inner wall of the first electrode 301 to separate the first electrode 301 from the second electrode 302 by the light-transmitting member 303, meanwhile, an accommodating space is formed between the light-transmitting member 303 and the second electrode 302 to be filled with a rare gas or a mixture of a plurality of rare gases, so that the rare gas is prevented from leaking, an alternating high voltage or a pulsed high voltage is applied between the first electrode 301 and the second electrode 302, the voltage is 1.5kV-15kV, ultraviolet rays are generated, the wavelength selection range of the ultraviolet rays can be wider by adopting a high voltage breakdown mode, and the wavelength range of the ultraviolet rays is 70nm-370nm. The types of rare gases are shown in table 1.

TABLE 1 rare gases

In this embodiment, since the wavelengths of the ultraviolet rays excited by the different rare gases are different, the rare gases may be introduced between the light-transmitting member 303 and the second electrode 302 according to table 1, and the different rare gases may generate different wavelengths, and the shorter the wavelength is, the higher the energy is, the more easily the photocatalyst element 20 is excited to generate an active material, that is, the shorter the wavelength is, the more the active material is generated by the catalyst element 20.

In the present embodiment, the light-transmitting member 303 may be quartz glass or transparent plastic. Since quartz glass is good in transparency, free from contamination, not liable to age, good in heat resistance, and transparent plastic is liable to age, poor in heat resistance, it is preferable that the light transmitting member 303 is quartz glass.

Referring to fig. 5, in this embodiment, to facilitate the installation of the first electrode 301, the second electrode 302, and the at least one light transmissive member 303, the ultraviolet lamp 30 further includes: two fixed terminals 304. The two fixing terminals 304 are respectively provided at both ends of the first electrode 301, the second electrode 302 and the at least one light-transmitting member 303, the first electrode 301, the second electrode 302 and the at least one light-transmitting member 303 are supported by the two fixing terminals 304, so that the first electrode 301, the second electrode 302 and the at least one light-transmitting member 303 are conveniently mounted, the first electrode 301, the second electrode 302 and the at least one light-transmitting member 303 are kept in a coaxial state, and simultaneously, the two fixing terminals 304 can also seal the ends of the first electrode 301, the second electrode 302 and the at least one light-transmitting member 303 to avoid rare gas leakage.

Referring to fig. 5, in this embodiment, in order to ensure uniform discharge, when the number of light-transmitting members 303 is two, the light-transmitting members 303 include a first light-transmitting member 3031 attached to the inner wall of the first electrode 301 and a second light-transmitting member 3032 attached to the inner wall of the second electrode 302, and the uniform discharge is ensured by the double-layer insulating medium, and an accommodating space is formed between the first light-transmitting member 3031 and the second light-transmitting member 3032, so that the accommodating space is filled with one rare gas or a mixture of multiple rare gases, thereby avoiding leakage of the rare gas.

In this embodiment, in order to improve the ultraviolet utilization efficiency, a reflective layer is disposed on the end surface of the second light-transmitting member 3032 facing away from the second electrode 302, that is, the end surface of the second light-transmitting member 3032 facing away from the second electrode 302 is subjected to mirror treatment to reflect the ultraviolet, so as to improve the ultraviolet utilization efficiency. In this embodiment, the reflective layer may be made of silver, nickel, chromium, or other materials, so that the end surface of the second light-transmitting member 3032 facing away from the second electrode 302 forms a mirror surface, and may reflect ultraviolet rays. Of course, in other embodiments, the reflective layer may be a metal such as aluminum foil or stainless steel, and is attached to the end surface of the second transparent member 3032 facing away from the second electrode 302, so that the end surface of the second transparent member 3032 facing away from the second electrode 302 forms a mirror surface to reflect the ultraviolet light.

Fig. 3 is a top view of the purification apparatus of fig. 1. In some embodiments, referring to fig. 1 and 3, in order to accelerate the circulation of air, the purifying apparatus further includes a fan 60 disposed on the housing 10, where the fan 60 is disposed at the air outlet 102, so that air sequentially enters the second chamber 104 from the air inlet 101, the first chamber 103 and the photocatalyst assembly 20, and is discharged from the air outlet 102, and the air is pumped by the fan 60, so that the air can circulate rapidly, thereby further improving the purifying efficiency.

As the photocatalyst element 20 adsorbs odor molecules during the purification of air. In this embodiment, in order to remove the odor molecules adsorbed on the photocatalyst 20, the purifying apparatus further includes a controller electrically connected to the blower 60 and the ultraviolet lamp 30. The controller obtains a shutdown instruction, and controls the fan 60 to be turned off according to the shutdown instruction and obtains a delayed shutdown signal, and controls the ultraviolet lamp 30 to be turned off according to the delayed shutdown signal, so that ultraviolet rays emitted by the ultraviolet lamp 30 can irradiate the photocatalyst assembly 20, and peculiar smell molecules adsorbed on the photocatalyst assembly 20 are removed, so that the photocatalyst assembly 20 is regenerated.

In this embodiment, the controller determines whether a power-on instruction is received, where the power-on instruction is a power-on instruction sent by a user, for example, the user clicks the power-on electronic component on the electronic component of the control component, or the user clicks the power-on electronic component on the mobile terminal. Other implementations are not exhaustive herein. And when the controller is in accordance with the shutdown instruction, the controller obtains a delay shutdown signal. The controller obtains a delayed closing signal according to the shutdown instruction, and controls the ultraviolet lamp 30 to be closed according to the delayed closing signal so as to enable the ultraviolet lamp 30 to be closed in a delayed manner, ultraviolet rays emitted by the ultraviolet lamp 30 can irradiate the photocatalyst assembly 20, and peculiar smell molecules adsorbed on the photocatalyst assembly 20 are removed so as to enable the photocatalyst assembly 20 to be regenerated.

In this embodiment, in order to remove the odor molecules adsorbed on the photocatalyst member 20 to regenerate the photocatalyst member 20, the purifying apparatus further includes a timer electrically connected to the controller. The controller obtains a closing time value timed by the timer, compares the closing time value with a preset closing time value, and generates a delay closing signal under the condition that the closing time value is larger than or equal to the preset closing time value.

In this embodiment, when the controller obtains the shutdown instruction, the timer starts to count and sends the counted shutdown time value to the controller, the controller compares the shutdown time value with a preset shutdown time value, the controller generates a delayed shutdown signal, and the controller controls the ultraviolet lamp 30 to be turned off according to the delayed shutdown signal, so that the ultraviolet lamp 30 is turned off in a delayed manner, ultraviolet rays emitted by the ultraviolet lamp 30 can irradiate onto the photocatalyst assembly 20, and odor molecules adsorbed on the photocatalyst assembly 20 are removed, so that the photocatalyst assembly 20 is regenerated. Wherein the preset closing time value can be 3min-30min.

In this embodiment, when the purifying device is used as an independent purifier, the timer counts the running time and sends the counted running time to the controller, the controller compares the running time with the preset running time, and when the running time is greater than or equal to the preset running time, the controller generates a shutdown command, and the controller controls the fan 60 to stop rotating according to the shutdown command. Wherein the preset running time can be 0.5h-2h.

Based on the same inventive concept, the utility model also provides a refrigerator, the refrigerator adopts the purifying device, the specific structure of the purifying device refers to the above embodiments, and the purifying device adopts all the technical schemes of all the embodiments, so that the refrigerator has at least all the beneficial effects brought by the technical schemes of the embodiments, and the purifying device is not described in detail herein.

In some embodiments, the refrigerator includes a cooling air duct. Set up purifier's casing 10 in the refrigeration wind channel, start fan 60, fan 60 is with the air in the refrigeration wind channel through air intake 101 extraction to in the first cavity 103, bacterium and peculiar smell molecule in the air can take place oxidation reaction with electron hole pair in first cavity 103, then, in the air gets into second cavity 104 through photocatalyst assembly 20, bacterium and peculiar smell molecule in the air can take place oxidation reaction with electron hole pair in second cavity 104, finally follow air outlet 102 and discharge, purify the air, avoid the influence of ultraviolet lamp 30 produced ultraviolet ray to the human body, simultaneously, can also practice thrift the space, be convenient for arrange. Meanwhile, ROS reactive substances enter the refrigerator from the air outlet 102 and can react with bacteria and pesticides on the surface of the external food materials, so that the bacteria are killed, the pesticides are degraded, and the safety of the food materials is ensured.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A purification apparatus, comprising:

the shell is provided with an air inlet and an air outlet;

the photocatalyst component is arranged in the shell to divide the shell into a first cavity communicated with the air inlet and a second cavity communicated with the air outlet;

the ultraviolet lamp is arranged in the second cavity to emit ultraviolet rays and irradiate the photocatalyst component;

and the reflecting piece is arranged in the first cavity and used for reflecting ultraviolet rays transmitted through the photocatalyst component.

2. The purification apparatus of claim 1, wherein the first chamber is located outside of the second chamber, air entering the second chamber from the air inlet, the first chamber, the photocatalyst assembly, and exiting from the air outlet in that order.

3. The purification apparatus of claim 1, wherein the inlet vent and the first chamber are both annular in cross-sectional shape.

4. A purification apparatus according to any one of claims 1-3, wherein the reflective element is coated on the inner wall of the housing.

5. A purification apparatus according to any one of claims 1 to 3, wherein the photocatalyst assembly comprises:

an annular base material arranged in the shell;

and a catalyst supported on the annular substrate.

6. The purification apparatus of claim 5, wherein the ultraviolet lamp has a length that is less than or equal to the length of the annular substrate.

7. The purification apparatus of claim 5, wherein the ultraviolet lamp is tubular and concentric with the annular substrate.

8. A purification device according to any one of claims 1-3, wherein the purification device further comprises:

and the support piece is arranged in the first cavity and connected with the photocatalyst component, and the ultraviolet lamp is arranged on the support piece.

9. The purification apparatus of claim 8, wherein the ultraviolet lamp is disposed in a middle portion of the support member.

10. A purification device according to any one of claims 1-3, wherein the ultraviolet lamp comprises a mercury lamp or a high pressure discharge lamp.

11. The purification apparatus of claim 10, wherein when the ultraviolet lamp is a high pressure discharge lamp, the ultraviolet lamp comprises:

a first electrode;

the second electrode is arranged in the first electrode;

at least one light-transmitting piece is arranged between the first electrode and the second electrode, and one of the at least one light-transmitting piece is attached to the inner wall of the first electrode.

12. The purification apparatus of claim 11, wherein the ultraviolet lamp further comprises:

and the two fixed terminals are respectively arranged at the two ends of the first electrode, the second electrode and at least one light-transmitting piece.

13. The purifying apparatus according to claim 11, wherein when the number of the light-transmitting members is two, the light-transmitting members include a first light-transmitting member that is bonded to an inner wall of the first electrode and a second light-transmitting member that is bonded to an inner wall of the second electrode;

wherein, the second light-transmitting piece deviates from the terminal surface of the second electrode and is provided with a reflecting layer.

14. A purification apparatus according to any one of claims 1 to 3, further comprising a blower provided on the housing, the blower being provided at the air outlet to cause air to enter the second chamber from the air inlet, the first chamber and the photocatalyst assembly in that order and to exit from the air outlet.

15. The purification apparatus of claim 14, further comprising a controller electrically connected to the blower and the ultraviolet lamp;

the controller obtains a shutdown instruction, controls the fan to be turned off according to the shutdown instruction, obtains a delay turn-off signal, and controls the ultraviolet lamp to be turned off according to the delay turn-off signal.

16. The purification apparatus of claim 15, further comprising a timer electrically connected to the controller;

the controller obtains a closing time value counted by the timer, compares the closing time value with a preset closing time value, and generates a delay closing signal under the condition that the closing time value is larger than or equal to the preset closing time value.

17. A refrigerator comprising a purification apparatus as claimed in any one of claims 1 to 16.