Light purification module and refrigeration device

Abstract

The utility model discloses a kind of light purification module and refrigeration equipment, light purification module includes support frame, fixed in the light board and photocatalyst carrier of the support frame;The photocatalyst carrier includes a plurality of through holes for adhering photocatalytic material, the through hole is along the width direction of support frame and is penetrated, along the width direction of support frame The light board is oppositely arranged with the photocatalyst carrier, the light purification module includes the purification channel formed between the photocatalyst carrier and light board, along the width direction of support frame The side of photocatalyst carrier deviating from light board is exposed outside. The active substance with strong oxidizing property generated after photocatalysis can diffuse towards the side deviating from light board, expand purification range, improve purification efficiency.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration, and in particular to a light purification module and refrigeration equipment. Background Technology

[0002] In daily life, various vegetables and fruits need to be stored in the refrigerator every day to achieve the effects of preservation and refrigeration. Some vegetables and fruits often release substances with foul odors when stored in the refrigerator. These substances affect the air quality of the entire refrigerator compartment and also affect the preservation effect of other foods.

[0003] Existing refrigerators are also equipped with sterilization and deodorization devices. These devices include a mounting frame, a photocatalytic carrier, and a lamp panel. The photocatalytic carrier and the lamp panel are fixed to the opposite side walls of the mounting frame, forming a purification channel between them. To avoid affecting air intake, the photocatalytic carrier is very thin, and the side facing away from the lamp panel is usually attached to the mounting frame, resulting in low purification efficiency. Utility Model Content

[0004] One of the objectives of this invention is to provide a light purification module to at least solve the technical problem of low purification efficiency in the prior art.

[0005] One of the objectives of this invention is to provide a refrigeration device.

[0006] To achieve one of the above-mentioned objectives, one embodiment of this utility model provides a light purification module, comprising: a support frame, a lamp plate and a photocatalytic carrier fixed to the support frame; the photocatalytic carrier includes a plurality of through holes for attaching photocatalytic materials, the through holes extending along the width direction of the support frame, the lamp plate and the photocatalytic carrier being disposed opposite to each other along the width direction of the support frame, the light purification module including a purification channel formed between the photocatalytic carrier and the lamp plate, and the side of the photocatalytic carrier away from the lamp plate being exposed along the width direction of the support frame.

[0007] As a further improvement of one embodiment of this utility model, the photocatalyst carrier is a honeycomb ceramic block.

[0008] As a further improvement of one embodiment of the present invention, along the width direction of the support frame, the purification channel is narrower than the width of the photocatalyst carrier, and the width of the photocatalyst carrier is greater than half the width of the support frame.

[0009] As a further improvement of one embodiment of the present invention, the support frame includes a bottom wall, a first side wall and a second side wall extending upward from the bottom wall; the first side wall and the second side wall are spaced apart and arranged opposite to each other along the length direction of the support frame, and the photocatalyst carrier is fixed between the first side wall and the second side wall.

[0010] As a further improvement of one embodiment of the present invention, the light purification module includes shock-absorbing cotton, which is located between the first sidewall and the photocatalyst carrier, and / or between the second sidewall and the photocatalyst carrier.

[0011] As a further improvement of one embodiment of the present invention, a retaining portion is provided at the top of the first sidewall and the second sidewall, the retaining portion being used to abut against the top surface of the photocatalyst carrier; slots are provided on both sides of the first sidewall and the second sidewall.

[0012] As a further improvement of one embodiment of the present invention, the lamp panel includes a first side wall disposed on the bottom wall and used to fix the lamp panel, the first side wall extending along the length direction of the support frame.

[0013] As a further improvement of one embodiment of the present invention, the first sidewall includes a protrusion disposed on the top surface. By operating the protrusion, the first sidewall can be deformed.

[0014] As a further improvement of one embodiment of the present invention, the support frame includes a fourth sidewall parallel to the first sidewall, and a wiring space formed between the first sidewall and the fourth sidewall. The first sidewall is located between the fourth sidewall and the second sidewall, and the cable passes through the wiring space to connect to the lamp panel.

[0015] To achieve one of the above-mentioned objectives of the utility model, one embodiment of the utility model provides a refrigeration device, including the light purification module and the air duct assembly described in any of the above technical solutions, wherein the light purification module is disposed within the air duct assembly.

[0016] Compared with the prior art, the present invention provides a light purification module, including a purification channel formed between the photocatalyst carrier and the lamp panel. The side of the photocatalyst carrier facing away from the lamp panel is not used to be fixed to the support frame, but is exposed to the outside. The active substance with strong oxidizing properties generated after photocatalysis can diffuse towards the side facing away from the lamp panel, expanding the purification range and thus improving the purification efficiency. Attached Figure Description

[0017] Figure 1-3 This is a three-dimensional schematic diagram of the light purification module from multiple angles in one embodiment of this utility model.

[0018] Figure 4-6 This is an exploded view of the light purification module from multiple angles in one embodiment of this utility model. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0020] The terms used herein, such as “above,” “over,” “below,” and “under,” indicating spatial relative position, are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. These terms may be intended to include different orientations of the device in use or operation other than those shown in the figures. For example, if the device in the figures is flipped, a unit described as being “below” or “under” another unit or feature would be “above” that unit or feature. Therefore, the exemplary term “below” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or otherwise) and the spatially related descriptive terms used herein will be interpreted accordingly.

[0021] Please see Figure 1 This is a schematic diagram of the structure of a light purification module 100 provided in an embodiment of the present invention. The light purification module 100 is used for sterilization and deodorization of the internal refrigeration compartment of a refrigeration device, which may be a household refrigerator.

[0022] The light purification module 100 includes: a support frame 10, a lamp plate 30 fixed to the support frame 10 and a photocatalyst carrier 50. The photocatalyst carrier 50 is used to attach photocatalysts / photocatalytic materials, and the lamp plate 30 is used to irradiate the photocatalyst carrier 50, thereby triggering a chemical reaction between the photocatalyst and the air medium.

[0023] The lamp panel 30 includes ultraviolet LED beads 31 with a wavelength range of 320nm to 500nm, which irradiate photocatalytic materials / photocatalysts to achieve decomposition and purification.

[0024] Photocatalysts, also known as photocatalysts, are a general term for semiconductor materials with photocatalytic functions, represented by nano-sized titanium dioxide. Titanium dioxide is a representative photocatalytic material that produces a strong oxidizing substance under light irradiation, used to decompose organic compounds, some inorganic compounds, bacteria, and viruses. In daily life, photocatalysts can effectively degrade toxic and harmful gases in the air, such as formaldehyde, efficiently purifying the air; at the same time, they can effectively kill various bacteria and decompose and neutralize toxins released by bacteria or fungi.

[0025] When a semiconductor material is irradiated with light whose photon energy exceeds its absorption threshold, valence band electrons undergo interband transitions, moving from the valence band to the conduction band, generating photogenerated electrons and holes. Dissolved oxygen adsorbed on the nanoparticle surface captures these electrons to form superoxide anions, while the holes oxidize hydroxide ions and water adsorbed on the catalyst surface into hydroxyl radicals. These superoxide anions and hydroxyl radicals possess strong oxidizing properties, capable of oxidizing most organic matter to carbon dioxide and water as final products, and even completely decomposing some inorganic substances.

[0026] Titanium dioxide was the first photocatalyst discovered, with a band gap of 3.2 eV. When irradiated with light of wavelength less than or equal to 387.5 nm (ultraviolet light), electrons on the surface of titanium dioxide gain the energy of photons and jump to the conduction band, forming photogenerated electrons and holes. These photogenerated electrons and holes have strong oxidizing properties and can degrade organic pollutants in water and air, converting them into harmless substances.

[0027] Tungsten trioxide is a photocatalytic material that was discovered later. Its band gap is in the range of 2.6 eV to 2.8 eV, which is relatively low, allowing tungsten trioxide to effectively absorb photons in the visible light range within 500 nm.

[0028] Generally, the light emitted by LEDs is within a certain wavelength range. Some ultraviolet LEDs also emit some visible light. Titanium dioxide hardly absorbs visible light, while tungsten trioxide can absorb visible light below 500nm. In order to utilize the light energy released by LEDs more efficiently, the photocatalyst can be a mixture of these two substances, with the ratio of titanium dioxide to tungsten trioxide ranging from 1:9 to 9:1.

[0029] The photocatalytic carrier 50 includes a plurality of through holes 51 for attaching photocatalytic materials. The through holes 51 extend along the width direction of the support frame 10. The lamp plate 30 is disposed opposite to the photocatalytic carrier 50 along the width direction of the support frame 10. The light purification module 100 includes a purification channel 101 formed between the photocatalytic carrier 50 and the lamp plate 30. The side of the photocatalytic carrier 50 away from the lamp plate 30 is exposed along the width direction of the support frame 10.

[0030] Thus, when the lamp plate 30 irradiates the photocatalyst carrier 50 along the width direction of the support frame, the light passes through the through hole 51, thereby irradiating and covering the entire photocatalyst carrier 50 along the width direction. Due to the reflection and refraction of light, the light can also irradiate and cover the entire photocatalyst carrier 50 along the length direction, thereby improving the photocatalytic efficiency.

[0031] In this application, combined with Figure 2As shown, a purification channel 101 is formed between the photocatalyst carrier 50 and the lamp plate 30. The side of the photocatalyst carrier 50 facing away from the lamp plate 30 is not used to be fixed to the support frame 10, but is exposed to the outside, so that the active substances with strong oxidizing properties generated after photocatalysis can diffuse to the side facing away from the lamp plate, expand the purification range, and thus improve the purification efficiency.

[0032] In one embodiment, combined with Figure 3 As shown, the photocatalyst carrier 50 is a honeycomb ceramic block. It can be understood that the photocatalyst carrier 50 does not only have through-holes 51, but its entire surface can be covered with photocatalytic material. The honeycomb ceramic block has a high porosity, a large catalytic surface, and generates more active substances, thus improving the purification effect.

[0033] Combination Figure 4 As shown, the photocatalyst carrier 50 is a cuboid, with openings on both the side facing the lamp panel 30 and the side away from the lamp panel 30 to allow light to pass through and generate active substances, while the other four sides can be optionally formed into flat surfaces for easy installation and fixing.

[0034] Along the width direction of the support frame, the purification channel 101 is narrower than the width of the photocatalyst carrier 50, and the width of the photocatalyst carrier 50 is greater than half the width of the support frame 10. In a specific embodiment, combined with... Figure 2 As shown, the photocatalyst carrier 50 in this case is a ceramic material with a certain thickness, thus having a certain strength and a relatively large volume, which allows for the attachment of more photocatalytic materials.

[0035] Both the photocatalyst carrier 50 and the lamp panel 30 are fixed to the support frame 10. The photocatalyst carrier 50 occupies more than half of the width of the support frame 10, which will affect the width of the purification channel 101. Although the purification channel 101 formed between the photocatalyst carrier 50 and the lamp panel 30 is relatively narrow, the side of the photocatalyst carrier 50 facing away from the lamp panel 30 is also exposed, providing purification space. Therefore, it will not only not reduce the purification effect, but can actually increase the purification efficiency.

[0036] The support frame 10 includes a bottom wall 15, a first side wall 11 and a second side wall 12 extending upward from the bottom wall 15; the first side wall 11 and the second side wall 12 are spaced apart and arranged opposite to each other along the length direction of the support frame 10, and the photocatalyst carrier 50 is fixed between the first side wall 12 and the second side wall 12.

[0037] In existing technologies, photocatalyst carriers are typically thin, and one side of the carrier is fixed to the sidewall of the support frame along its length, which affects the free diffusion of the active substance. In this application, the photocatalyst carrier 50 is fixed to the first sidewall 11 and the second sidewall 12 along its length, while both sides along its width are exposed outwards. The generated active substance with strong oxidizing properties can diffuse from both sides, improving the purification efficiency.

[0038] Combination Figure 4-6 As shown, the top of the first sidewall 11 and the second sidewall 12 are provided with retaining portions 111, which are used to abut against the top surface of the photocatalyst carrier. The bottom of the photocatalyst carrier 50 along the height direction is attached to the bottom wall 15, and the top is fixed by retaining portions 111 on both sides along the length direction. In a specific embodiment, the retaining portion 111 is formed as a hook, and the photocatalyst carrier 50 is limited between the retaining portion 111 and the bottom wall 15, and also limited between the first sidewall 11 and the second sidewall 12.

[0039] The first sidewall 11 has slots 112 on both sides of the holding part 111, which facilitates the elastic deformation of the holding part 111. When the photocatalyst carrier 50 is installed, the holding part 111 can deform under force to avoid the photocatalyst carrier 50. The first sidewall 11 also has a reinforcing rib 113 directly below the corresponding holding part 111. The reinforcing rib 113 can extend to connect to the bottom wall 15. The reinforcing rib 113 is away from the photocatalyst carrier 50. The reinforcing rib 113 increases the strength of the first sidewall 11 and prevents the holding part 111 from deforming and breaking under force.

[0040] The second sidewall 12 has slots 112 on both sides of the holding part 111, which facilitates the elastic deformation of the holding part 111. When the photocatalyst carrier 50 is installed, the holding part 111 can deform under force to avoid the photocatalyst carrier 50. The second sidewall 12 also has reinforcing ribs 113 directly below the corresponding holding part 111. The reinforcing ribs 113 are away from the photocatalyst carrier 50. The reinforcing ribs 113 increase the strength of the second sidewall 12 and prevent the second sidewall 12 from deforming and breaking under force on the holding part 111.

[0041] The support frame 10 includes a third side wall 13 disposed on the bottom wall 15 for fixing the lamp panel 30, and the third side wall 13 extends along the length direction of the support frame 10. The lamp panel 30 is fixed against the third side wall 13.

[0042] Specifically, combined Figure 6As shown, the bottom wall 15 has a retaining wall 151 near the third side wall 13, forming a retaining space between the retaining wall 151 and the third side wall 13, and the lamp plate 30 is retained in the retaining space. The bottom wall 15 has three retaining walls 151 along its length to retain the two ends and the middle of the lamp plate 30, ensuring a good fixing effect.

[0043] The top of the third sidewall 13 is provided with a latching part 131 facing the lamp panel 30. The latching part 131 is used to latch and fix the top of the lamp panel 30. The latching part 131 is formed as a hook. The hook covers the top side of the lamp panel 30 and extends to the side of the lamp panel 30 facing the photocatalyst carrier 50, thereby better fixing the lamp panel 30.

[0044] A first positioning part 132 is further provided at the middle position of the third sidewall 13, and a second positioning part 32 is provided on the lamp panel 30 corresponding to the first positioning part 132. The first positioning part 132 and the second positioning part 32 cooperate to play a positioning role when the lamp panel is installed. In a specific embodiment, the first positioning part 132 and the second positioning part 32 are a positioning block and a positioning groove, respectively. The positioning block passes through the positioning groove, thereby playing a positioning role between the two.

[0045] The third sidewall 13 includes a protrusion 133 on its top surface. Operating the protrusion 133 can cause the third sidewall 13 to deform. The protrusion 133 is higher than the photocatalyst carrier 50 and forms an operating part. The operator can apply force to the third sidewall 13 through the protrusion 133 to deform it away from the photocatalyst carrier 50, thereby facilitating the installation and removal of the lamp panel 30.

[0046] The support frame 10 includes enclosing walls 16 arranged parallel to the third side wall 13. Two of the enclosing walls 16 are located on the side of the photocatalyst carrier 50 away from the lamp panel 30, and the other two enclosing walls 16 are located on the side of the photocatalyst carrier 50 facing the lamp panel 30. The two enclosing walls 16 are respectively connected to the two ends of the first side wall 11 and the two ends of the second side wall 12 to form a four-corner structure. The four corner structures respectively enclose the four corners of the photocatalyst carrier 50. Each enclosing wall 16 extends a short distance along its length to prevent it from being too long and obstructing the photocatalyst carrier 50.

[0047] Two of the surrounding walls 16 located on the side of the photocatalyst carrier 50 away from the lamp plate 30 are higher than the other two surrounding walls 16 located on the side of the photocatalyst carrier 50 facing the lamp plate 30. The two higher surrounding walls 16 are at the same height as the protrusion 133. When the bottom wall 15 of the light purification module 100 is fastened upward, it can play a supporting and balancing role, preventing the light purification module 100 from tipping over.

[0048] The support frame 10 includes a fourth side wall 14 parallel to the first side wall 11, and a wiring space 102 formed between the first side wall 11 and the fourth side wall 14. The first side wall 11 is located between the fourth side wall 14 and the second side wall 12. The wiring space 102 is used for cables 71 to pass through. The cables 71 are connected to the light panel 30. The wiring space 102 is used to straighten the cables, prevent them from getting tangled, facilitate transportation and installation, and optimize the spatial layout of the support frame 10.

[0049] The lamp board 30 is also a circuit board, and the cable 71 is connected to the circuit board to at least power the lamp beads 31. The light purification module 100 includes a connector 70, and the cable 71 connects the connector 70 and the lamp board 30. The connector 70 is connected to an external power supply line to power the lamp beads 31.

[0050] The light purification module 100 includes shock-absorbing cotton 60 to reduce hard impacts and prevent the photocatalyst carrier 50 from being broken or damaged. The shock-absorbing cotton 60 is located between the first side wall 11 and the photocatalyst carrier 50, or the shock-absorbing cotton 60 is located between the second side wall 12 and the photocatalyst carrier 50, or two shock-absorbing cotton 60s are simultaneously disposed on both sides of the photocatalyst carrier 50.

[0051] The shock-absorbing cotton 60 is adhered to one side or both sides of the photocatalyst carrier 50, which not only provides shock absorption but also facilitates the installation of the photocatalyst carrier 50 into the support frame 10.

[0052] The beneficial effects of this utility model are as follows: the side of the photocatalyst carrier 50 facing away from the lamp plate 30 is not used to be fixed to the support frame 10, but is exposed to the outside. The active substances with strong oxidizing properties generated after photocatalysis can diffuse towards the side facing away from the lamp plate 30, expanding the purification range and thus improving the purification efficiency. The photocatalyst carrier 50 is fixed to the support frame 10 through the first side wall 11 and the second side wall 12. The first side wall 11 and the second side wall 12 are both provided with a retaining part 111 and a slot 112 to facilitate the installation of the photocatalyst carrier 50. A protrusion 131 is provided, which can be used to bend the third side wall 13. The protrusion 131 can also work with the surrounding wall 16 to provide balance support and prevent tipping.

[0053] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0054] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A light purification module, characterized in that, include: A support frame, a lamp plate and a photocatalyst carrier fixed to the support frame; the photocatalyst carrier includes a plurality of through holes for attaching photocatalysts, the through holes extending along the width direction of the support frame, the lamp plate and the photocatalyst carrier being arranged opposite each other along the width direction of the support frame, the light purification module including a purification channel formed between the photocatalyst carrier and the lamp plate, the side of the photocatalyst carrier away from the lamp plate being exposed along the width direction of the support frame.

2. The light purification module according to claim 1, characterized in that, The photocatalyst carrier is a honeycomb ceramic block.

3. The light purification module according to claim 1, characterized in that, Along the width direction of the support frame, the purification channel is narrower than the width of the photocatalyst carrier, and the width of the photocatalyst carrier is greater than half the width of the support frame.

4. The light purification module according to claim 1, characterized in that, The support frame includes a bottom wall, a first side wall and a second side wall extending upward from the bottom wall; the first side wall and the second side wall are spaced apart and arranged opposite each other along the length direction of the support frame, and the photocatalyst carrier is fixed between the first side wall and the second side wall.

5. The light purification module according to claim 4, characterized in that, The light purification module includes shock-absorbing cotton, which is located between the first sidewall and the photocatalyst carrier, and / or between the second sidewall and the photocatalyst carrier.

6. The light purification module according to claim 4, characterized in that, The first sidewall and the second sidewall are provided with a retaining part at the top, which is used to abut against the top surface of the photocatalyst carrier; the first sidewall and the second sidewall are provided with slots on both sides of the retaining part.

7. The light purification module according to claim 4, characterized in that, The support frame includes a third side wall disposed on the bottom wall for fixing the lamp panel, the third side wall extending along the length direction of the support frame.

8. The light purification module according to claim 7, characterized in that, The third sidewall includes a protrusion on the top surface. Operating the protrusion can cause the third sidewall to deform.

9. The light purification module according to claim 4, characterized in that, The support frame includes a fourth sidewall parallel to the first sidewall, and a wiring space formed between the first sidewall and the fourth sidewall. The first sidewall is located between the fourth sidewall and the second sidewall. The wiring space is used for cables to pass through, and the cables are connected to the light panel.

10. A refrigeration device, characterized in that, It includes the light purification module and the air duct assembly as described in any one of claims 1-9, wherein the light purification module is disposed within the air duct assembly.

Images