Air duct assembly and refrigeration equipment

Abstract

The invention discloses an air duct assembly and refrigeration equipment, the air duct assembly comprises an air duct panel and a light purification module arranged on the air duct panel, the air duct panel comprises an air inlet, an air outlet and an air channel, and air enters the air channel from the air inlet and leaves the air channel from the air outlet; the light purification module comprises a photocatalyst carrier, the photocatalyst carrier is exposed to the air channel, and the light purification module and the air inlet are arranged in a spaced mode in the air flowing direction; the arrangement position of the light purification module is changed, the purification effect is guaranteed, and wind resistance and noise are reduced.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration, and in particular to an air duct assembly and refrigeration equipment. Background Art

[0002] In daily life, various vegetables and fruits need to be stored in the refrigerator to achieve the effect of freshness and refrigeration. When stored in the refrigerator, some vegetables and fruits often release some odorous substances, which affect the air quality of the entire refrigerator storage compartment and also affect the freshness of other foods.

[0003] Existing refrigerators are also equipped with sterilization and odor removal devices. The existing sterilization and odor removal devices include a mounting frame, a photocatalyst carrier and a light board. The photocatalyst carrier and the light board are fixed to the opposite side walls of the mounting frame. A purification channel is formed between the photocatalyst carrier and the light board. In order not to affect the air intake, the photocatalyst carrier is very thin and the side facing away from the light board is usually attached to the mounting frame, resulting in low purification efficiency.

[0004] Existing sterilization and odor removal devices are often installed at the air duct entrance, with the photocatalyst carrier and light panel placed against either side of the vent. Air passes between the light panel and the photocatalyst carrier to achieve a purification effect. However, placing the sterilization and odor removal device at the air duct entrance blocks air flow, increasing energy consumption and noise. Summary of the Invention

[0005] One of the purposes of the present invention is to provide an air duct assembly to solve the technical problem in the prior art that placing a sterilization and odor removal device at the air inlet will increase wind resistance and noise.

[0006] One of the objectives of the present invention is to provide a refrigeration device.

[0007] In order to achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention provides an air duct assembly, including an air duct panel and an optical purification module arranged on the air duct panel, the air duct panel including an air inlet, an air outlet and an air channel, the gas enters the air channel from the air inlet and leaves the air channel from the air outlet, the optical purification module includes a photocatalyst carrier, the photocatalyst carrier is exposed to the air channel, and the optical purification module is arranged at intervals from the air inlet along the gas flow direction.

[0008] As a further improvement of one embodiment of the present invention, the duct panel includes a frame arranged on the outside of the wind channel, the surface of the frame is higher than the surface of the wind channel, the duct panel includes a first part frame and a second part frame, the air inlet is arranged in the first part frame, and the air outlet is arranged in the second part frame.

[0009] As a further improvement of an embodiment of the present invention, the light purification module is arranged at a position of the second portion of the frame close to the first portion of the frame.

[0010] As a further improvement of an embodiment of the present invention, the second partial frame includes a widened area arranged close to the first partial frame, the widened area is wider than the first partial frame, and the light purification module is arranged in the widened area.

[0011] As a further improvement of one embodiment of the present invention, the air duct panel includes a recessed space formed in the widened area, the recessed space is connected to the air channel, the light purification module is arranged in the recessed space, and the light purification module forms a first acute angle with the gas flow direction.

[0012] As a further improvement of an embodiment of the present invention, the range of the first acute angle is 10°-45°.

[0013] As a further improvement of an embodiment of the present invention, the length direction of the recessed space forms a first acute angle with the gas flow direction.

[0014] As a further improvement of one embodiment of the present invention, the air duct panel includes a step space formed in the widened area, the step space is close to the first part frame and connected to the recessed space, the step space has a first guide side surface, and the first guide side surface forms a first acute angle with the gas flow direction.

[0015] As a further improvement of one embodiment of the present invention, the light purification module includes a support frame, a lamp board and a photocatalyst carrier fixed to the support frame; the photocatalyst carrier includes a plurality of through holes for attaching photocatalysts, and the through holes pass through the width direction of the support frame.

[0016] As a further improvement of an embodiment of the present invention, the light purification module includes a purification channel formed between the photocatalyst carrier and the lamp board, and the side of the photocatalyst carrier away from the lamp board along the width direction of the support frame is exposed to the air channel.

[0017] As a further improvement of an embodiment of the present invention, the step space is connected to the purification channel, and an extension direction of the first guide side surface is parallel to an extension direction of the purification channel.

[0018] To achieve one of the above-mentioned objects of the invention, one embodiment of the present invention provides a refrigeration device, comprising an air duct assembly and a box body as described in any of the above-mentioned technical solutions, wherein the air duct assembly is arranged in the box body.

[0019] Compared with the prior art, the present invention provides an air duct assembly, in which the setting position of the light purification module in the air duct panel is changed, and the light purification module is exposed at a distance between the air duct and the air inlet, thereby reducing wind resistance and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1-2 It is a front view of the air duct assembly in one embodiment of the present invention and an enlarged view of the structure within the frame.

[0021] Figure 3-4 It is a schematic diagram of the air duct assembly from another angle and an enlarged view of the structure within the frame in one embodiment of the present invention.

[0022] Figure 5-6 This is a schematic diagram of a panel for separating an air duct from a light purification module in one embodiment of the present invention and an enlarged view of the structure within the frame.

[0023] Figure 7-9 3D schematic diagrams of a light purification module at various angles according to an embodiment of the present invention.

[0024] Figure 10-12 1 is a schematic diagram of the decomposition of the light purification module at various angles in one embodiment of the invention. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below 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 changes made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0026] As used herein, terms indicating spatial relative positions such as "upper," "above," "lower," and "below" are used for ease of explanation to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. Terms of spatial relative position may be intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, if the device in the drawings were turned over, units described as being "below" or "beneath" other units or features would be "above" the other units or features. Thus, the exemplary term "below" may encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein interpreted accordingly.

[0027] See Figure 1-2 , is a structural diagram of an air duct assembly 1000 provided in one embodiment of the present invention, which is used for air duct circulation in refrigeration equipment.

[0028] The air duct assembly 1000 includes an air duct panel 200, which includes an air inlet 201, an air outlet 202, and an air channel 203. Air enters the air channel 203 from the air inlet 201 and exits the air channel 203 from the air outlet 202. In a specific embodiment, the air duct panel 200 includes one air inlet 201 and multiple air outlets 202. After entering from one air inlet 201, air flows within the air channel 203 and exits from the multiple air outlets 202. The air duct panel 200 is typically provided with an air guide structure to guide the air flow.

[0029] The air duct assembly 1000 includes a light purification module 100 arranged on the air duct panel 200, the light purification module 100 includes a photocatalyst carrier 50, the photocatalyst carrier 50 is exposed to the air duct 203, and the light purification module 100 is arranged at a distance from the air inlet 201 along the gas flow direction, which does not affect the air intake volume and ensures the purification effect.

[0030] In the prior art, the optical purification module 100 is typically placed at the air inlet, allowing the airflow to be deodorized and purified as it enters the air inlet. However, the air inlet of the air duct panel 200 is typically narrow, and placing the optical purification module 100 at the air inlet inevitably affects the air intake, resulting in increased wind resistance and noise. In this application, the optical purification module 100 is placed within the air duct 203, spaced apart from the air inlet 201. This allows the airflow to enter the air duct 203 a certain distance from the air inlet 201 before purification. This does not affect the purification effect, while ensuring air intake and reducing wind resistance and noise.

[0031] In one embodiment, the air duct panel 200 includes an air channel 203 and a frame arranged on the outside of the air channel 203, the surface of the frame is higher than the surface of the air channel, the air duct panel 200 includes a first partial frame 210 and a second partial frame 220, the air inlet 201 is arranged on the first partial frame 210, and the air outlet 202 is arranged on the second partial frame 220.

[0032] Combine Figure 1 、 3 As shown, the duct panel 200 includes a frame located on the periphery and an air channel 203 formed by the frame. The first part of the frame 210 is located at the bottom along the length direction of the duct panel. The first part of the frame 210 is U-shaped as a whole, and an air inlet 201 is opened at the bottom side. The second part of the frame 220 is located at the top along the length direction of the duct panel. The second part of the frame 220 is an inverted U-shape, and multiple air outlets 202 are arranged on both sides of the second part of the frame 220.

[0033] The light purification module 100 is arranged on the second part frame 220 near the first part frame 210. When the air flow gradually passes from the wind channel 203 corresponding to the first part frame 210 to the wind channel 203 corresponding to the second part frame 220, it will pass through the light purification module 100, and the air flow will be deodorized and sterilized. It is equivalent to that after the air flow enters the wind channel 203 from the air inlet 201, there will be a buffer distance to ensure that the air inlet 201 can normally take in air before purification begins.

[0034] The second partial frame 220 includes a widened area 230 arranged near the first partial frame 210. The widened area 230 is wider than the first partial frame 210. The light purification module 100 is arranged in the widened area 230 and does not occupy the space of the middle wind channel 203, and does not increase wind resistance.

[0035] Along the width direction of the air duct assembly 200, the widened area 230 is a certain distance wider than the first part frame 210, which is used to set the light purification module 100. In this way, it will not affect the width of the air channel 203, will not affect the normal flow of air in the air channel 203, and also has a purification effect.

[0036] The air duct panel 200 includes a recessed space 240 formed in the widened area 230 . The recessed space 240 is connected to the air duct 203 . The light purification module 100 is disposed in the recessed space 240 . The light purification module 100 forms a first acute angle with the gas flow direction.

[0037] Combine Figure 3-6 As shown, the light purification module 100 has an angle with respect to the gas flow direction. More specifically, the following photocatalyst carrier 50 and its through hole 51 have an angle with the gas flow direction, which can make the active substances generated by the photocatalytic material have a tendency to diffuse obliquely. The active substances can flow along the gas to expand the purification range.

[0038] It is understandable that if the gas flow direction is completely perpendicular to the photocatalyst carrier 50 and its through hole 51, the wind resistance and noise will increase. If the gas flow direction is completely parallel to the photocatalyst carrier 50 and its through hole 51, the contact area between the gas and the active substance is insufficient, which may affect the purification effect. Therefore, in this case, the light purification module 100 is set at an angle, which will not increase the wind resistance and noise, and also ensure the purification effect.

[0039] The first acute angle ranges from 10° to 45°. In other words, the optical purification module 100 is deflected by an angle between 10° and 45° relative to the air flow direction. If the deflection is too large, it will occupy a large space in the width direction of the air duct panel 200. However, the width direction of the air duct assembly 1000 is limited. Therefore, the optical purification module 100 is relatively long along the length of the air duct assembly 1000, and the width offset should not be too large.

[0040] The length direction of the recessed space 240 forms a first acute angle with the direction of gas flow. As described above, the portion where the second portion of the frame 220 is wider than the first portion of the frame 210 forms a widened region 230. The widened region 230 is recessed to form the recessed space 240. The recessed space 240 is connected to the air duct 203. The recessed space 240 is used to place the light purification module 100, and can also expose a portion of the light purification module 100 to the air duct 203.

[0041] The shape and size of the recessed space 240 are adapted to the light purification module 100, so that the light purification module 100 can be installed exactly in the recessed space 240 and will not occupy too much space on the air duct panel 200. Therefore, when the light purification module 100 needs to be installed at an angle, the recessed space 240 needs to be set at an angle, and the tilt direction and angle must be consistent with those of the light purification module 100.

[0042] The recessed space 240 has a recessed bottom surface 241, which is lower than the surface of the wind channel 203, which is equivalent to the recessed space 240 being sunken. The recessed bottom surface 241 and the surface of the wind channel 203 are connected by an inclined surface 242 to achieve a smooth transition, and has the function of guiding the air flow into the recessed space 240 and then into the light purification module 100.

[0043] The recessed space 240 has a recessed side surface 243 , and the inclined surface 242 is close to the wind channel 203 to connect the surface of the wind channel 203 and the recessed bottom surface 241 . The recessed side surface 243 is located opposite to the wind channel 203 and is perpendicular to the recessed bottom surface 241 .

[0044] The light purification module 100 includes a support frame 10, which includes a bottom wall 15 and a third side wall 13 arranged on the bottom wall 15. The third side wall 13 is used to install the light board 30. The bottom wall 15 is arranged in abutment with the recessed bottom surface 241, and the third side wall 13 is arranged in abutment with the recessed side surface 243.

[0045] The air duct panel 200 includes a step space 250 formed in the widened area 230, the step space 250 is close to the first partial frame 210 and connected to the recessed space 240, the step space 250 has a first air-guiding side surface 251, and the first guiding side surface 251 forms a first acute angle with the gas flow direction, which is conducive to guiding the air flow to the optical purification module 100, more specifically, it is conducive to guiding the air flow to the purification channel 101.

[0046] The stepped space 250 is also formed by a recessed surface of the widened region 230, but it is higher than the surface of the air duct 203 and higher than the recessed bottom surface 241. It is understood that the light purification module 100 is located within the recessed space 240, and the stepped space 250 further exposes the light purification module 100 and guides air flow into the light purification module 100, thereby improving purification efficiency.

[0047] The step space 250 includes a first guide side surface 251 and a second guide side surface 252. The first guide side surface 251 is coplanar with the recessed side surface 243. The second guide side surface 252 is parallel to but higher than the recessed bottom surface 241. The second guide side surface 252 is more specifically flush with the bottom of the groove 112 of the second side wall 12.

[0048] Combine Figure 5-7 As shown, the light purification module 100 includes a support frame 10, a lamp board 30 and a photocatalyst carrier 50 fixed to the support frame 10; the photocatalyst carrier 50 includes a plurality of through holes 51 for attaching photocatalysts, and the through holes 51 pass through the width direction of the support frame; the light purification module 100 includes a purification channel 101 formed between the photocatalyst carrier 50 and the lamp board 30, and the side of the photocatalyst carrier 50 away from the lamp board 30 along the width direction of the support frame is exposed to the wind channel 203.

[0049] In this way, the lamp board 30 irradiates the photocatalyst carrier 50 along the width direction of the support frame, and active substances will inevitably be generated between the side of the photocatalyst carrier 50 facing the lamp board and the lamp board 30 for sterilization and deodorization. When light passes through the through hole 51, the other side of the photocatalyst carrier 50 facing away from the light board will also generate active substances in the air duct 203 to sterilize and deodorize, thereby improving the purification effect.

[0050] The optical purification module 100 is tilted as a whole in the recessed space 240. In other words, the support frame 10, the lamp board 30 and the photocatalyst carrier 50 are all tilted relative to the air duct panel 200. Therefore, the purification channel 101 is also tilted relative to the air duct panel 200, and the tilt angle is a first acute angle.

[0051] The stepped space 250 is connected to the purification channel 101, and the extension direction of the first guide side surface 251 is parallel to the extension direction of the purification channel 101. It can be understood that the side of the photocatalyst carrier 50 facing away from the light board 30 is exposed to the air channel 203, which has a better sterilization effect. The purification channel 101 is now opposite to the air channel 203. Therefore, the stepped space 250 and the first guide side surface 251 are further provided to guide part of the air flow to the purification channel 101, thereby improving the purification effect.

[0052] The following will be combined Figure 8-12 The structure of the light purification module 100 and its purification principle will be described in detail.

[0053] The photocatalyst carrier 50 is used to attach a photocatalyst / photocatalytic material, and the light board 30 is used to illuminate the photocatalyst carrier 50 , thereby triggering a chemical reaction between the photocatalyst and the air medium.

[0054] The light board 30 includes ultraviolet LED lamp beads 31 with a wavelength range of 320nm to 500nm, which irradiate the photocatalytic material / photocatalyst to achieve decomposition and purification.

[0055] Photocatalysts, also known as photocatalysts, are a general term for semiconductor materials with photocatalytic properties, typified by nano-sized titanium dioxide. Titanium dioxide, a representative photocatalyst material, produces strong oxidizing substances under light exposure, which are 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, effectively purifying the air. They can also effectively kill a variety of bacteria and decompose and render harmless toxins released by bacteria and fungi.

[0056] When light with photon energy above the semiconductor material's absorption threshold illuminates the semiconductor material, the valence band electrons in the semiconductor material undergo inter-band transitions, that is, from the valence band to the conduction band, generating photogenerated electrons and holes. At this time, dissolved oxygen adsorbed on the surface of the nanoparticles captures the electrons to form superoxide anions, while the holes oxidize the hydroxide ions and water adsorbed on the catalyst surface into hydroxyl radicals. Superoxide anions and hydroxyl radicals have strong oxidizing properties and can oxidize most organic matter to the final products carbon dioxide and water, and can even completely decompose some inorganic substances.

[0057] Titanium dioxide is the earliest discovered photocatalytic material, with a band gap of 3.2eV. When exposed to light (ultraviolet light) with a wavelength of 387.5nm or less, electrons on the titanium dioxide surface 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.

[0058] Tungsten trioxide is a photocatalytic material discovered later. Its band gap is in the range of 2.6eV to 2.8eV. This value is relatively low, which enables tungsten trioxide to effectively absorb photons in the visible light range within 500nm.

[0059] Generally, the light emitted by LEDs is within a certain wavelength range. Some ultraviolet LEDs also emit some visible light bands. Titanium dioxide hardly absorbs visible light, while tungsten trioxide can absorb visible light below 500nm. In order to more efficiently utilize the light energy released by LEDs, photocatalysts can be made by mixing these two substances, with the ratio of titanium dioxide to tungsten trioxide ranging from 1:9 to 9:1.

[0060] The photocatalyst carrier 50 includes a plurality of through holes 51 for attaching photocatalytic materials, and the through holes 51 pass through the width direction of the support frame 10. The lamp board 30 and the photocatalyst carrier 50 are arranged opposite to each other along the width direction of the support frame 10. The light purification module 100 includes a purification channel 101 formed between the photocatalyst carrier 50 and the lamp board 30. The side of the photocatalyst carrier 50 facing away from the lamp board 30 is exposed to the outside along the width direction of the support frame 10.

[0061] In a specific embodiment of the present application, a side of the photocatalyst carrier 50 facing away from the lamp board 30 along the width direction of the support frame 10 is exposed to the air channel 203 .

[0062] In this way, when the light board 30 illuminates the photocatalyst carrier 50 along the width direction of the support frame, the light passes through the through hole 51, so that it can illuminate and cover the entire photocatalyst carrier 50 along the width direction. Due to the reflection and refraction of light, it can also illuminate and cover the entire photocatalyst carrier 50 along the length direction, thereby improving the photocatalytic efficiency.

[0063] In this application, combined Figure 8 As shown, a purification channel 101 is formed between the photocatalyst carrier 50 and the lamp board 30. The side of the photocatalyst carrier 50 facing away from the lamp board 30 is not used to be fixed to the support frame 10, but is exposed outward, so that the active substance with strong oxidizing properties generated after photocatalysis can diffuse toward the side away from the lamp board, thereby expanding the purification range and improving the purification efficiency.

[0064] In one embodiment, combining Figure 9 As shown, the photocatalyst carrier 50 is a honeycomb-shaped ceramic block. It is understood that the entire surface of the photocatalyst carrier 50, not just the through-holes 51, can be covered with photocatalytic material. The honeycomb-shaped ceramic block has a high porosity and a large catalytic surface, generating more active substances and improving the purification effect.

[0065] Combine Figure 10As shown, the photocatalyst carrier 50 is a rectangular parallelepiped, and its side facing the light board 30 and the side away from the light board 30 are both formed as openings 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 fixation.

[0066] 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. Figure 8 As shown, the photocatalyst carrier 50 of this embodiment is made of ceramic material, has a certain thickness, and thus has a certain strength, and has a relatively large volume, and can attach more photocatalytic materials.

[0067] The photocatalyst carrier 50 and the lamp panel 30 are both fixed to the support frame 10. The photocatalyst carrier 50 occupies more than half of the width of the support frame 10, affecting 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 exposed, providing purification space. Therefore, rather than reducing the purification effect, it can actually increase the purification efficiency.

[0068] 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 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.

[0069] In the prior art, photocatalyst carriers are typically thin, with one side along the width direction abutting against the longitudinal sidewall of the support frame, which affects the free diffusion of the active material. In the present application, the photocatalyst carrier 50 is fixed to the first sidewall 11 and the second sidewall 12 on both sides along the longitudinal direction, while both sides along the width direction are exposed outward. This allows the generated active material with strong oxidizing properties to diffuse bilaterally, improving purification efficiency.

[0070] Combine Figure 10-12 As shown, a retaining portion 111 is provided at the top of the first side wall 11 and the second side wall 12. The retaining portion 111 is used to abut the top surface of the photocatalyst carrier. The bottom of the photocatalyst carrier 50 is abutted against the bottom wall 15 along its height direction, and the top is fixed by retaining portions 111 on both sides along its length direction. In a specific embodiment, the retaining portion 111 is formed as a hook, and the photocatalyst carrier 50 is confined between the retaining portion 111 and the bottom wall 15, and also between the first side wall 11 and the second side wall 12.

[0071] The first side wall 11 is provided with grooves 112 on both sides of the holding portion 111, so that the holding portion 111 can be elastically deformed. When the photocatalyst carrier 50 is installed, the holding portion 111 can be deformed under force to avoid the photocatalyst carrier 50. The first side wall 11 is also provided with a reinforcing rib 113 directly below the corresponding holding portion 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 side wall 11 to prevent the holding portion 111 from being subjected to force, which causes the first side wall 11 to deform and break.

[0072] The second side wall 12 is provided with grooves 112 on both sides of the holding portion 111, so that the holding portion 111 can be elastically deformed. When the photocatalyst carrier 50 is installed, the holding portion 111 can be deformed under force to avoid the photocatalyst carrier 50. The second side wall 12 is also provided with reinforcing ribs 113 directly below the corresponding holding portion 111. The reinforcing ribs 113 are away from the photocatalyst carrier 50. The reinforcing ribs 113 increase the strength of the second side wall 12 to prevent the holding portion 111 from being subjected to force, which causes the second side wall 12 to deform and break.

[0073] The support frame 10 includes a third side wall 13 disposed on the bottom wall 15 and used to fix the light board 30 . The third side wall 13 extends along the length direction of the support frame 10 . The light board 30 is fixed against the third side wall 13 .

[0074] Specifically, combined Figure 12 As shown, the bottom wall 15 is provided with a retaining wall 151 near the third side wall 13. A retaining space is formed between the retaining wall 151 and the third side wall 13, and the light board 30 is retained in the retaining space. The bottom wall 15 is provided with three retaining walls 151 along its length to retain the light board 30 at both ends and in the middle, ensuring a good fixing effect.

[0075] A snap-fit portion 131 is provided at the top of the third side wall 13 toward the lamp board 30. The snap-fit portion 131 is used to snap-fit and fix the top of the lamp board 30. The snap-fit portion 131 is formed as a hook, which covers the top side of the lamp board 30 and extends to the side of the lamp board 30 facing the photocatalyst carrier 50, thereby better fixing the lamp board 30.

[0076] A first positioning portion 132 is further provided in the middle of the third sidewall 13. The light panel 30 is provided with a second positioning portion 32 corresponding to the first positioning portion 132. The first positioning portion 132 cooperates with the second positioning portion 32 to provide positioning when the light panel is installed. In a specific embodiment, the first positioning portion 132 and the second positioning portion 32 are a positioning block and a positioning slot, respectively. The positioning block passes through the positioning slot to provide positioning between the two.

[0077] The third side wall 13 includes a raised portion 133 disposed on its top surface. Operating the raised portion 133 causes the third side wall 13 to deform. The raised portion 133 is higher than the photocatalyst carrier 50 and serves as an operating portion. An operator can apply force to the third side wall 13 through the raised portion 133 to deform the third side wall 13 away from the photocatalyst carrier 50, thereby facilitating installation and removal of the light board 30.

[0078] The support frame 10 includes an enclosing wall 16 arranged parallel to the third side wall 13, two of which are located on the side of the photocatalyst carrier 50 away from the lamp board 30, and the other two enclosing walls 16 are located on the side of the photocatalyst carrier 50 facing the lamp board 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 four corner structures. The four corner structures respectively wrap the four corners of the photocatalyst carrier 50. Each enclosing wall 16 extends a short distance along the length direction to prevent it from being too long and blocking the photocatalyst carrier 50.

[0079] The two surrounding walls 16 located on the side of the photocatalyst carrier 50 facing away from the lamp board 30 are higher than the other two surrounding walls 16 located on the side of the photocatalyst carrier 50 facing the lamp board 30. The two higher surrounding walls 16 are at the same height as the raised portion 133. When the bottom wall 15 of the light purification module 100 is buckled upward, it can play a supporting and balancing role to prevent the light purification module 100 from tipping over.

[0080] 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 the cable 71 to pass through. The cable 71 is connected to the light board 30 to straighten the cable and prevent it from being entangled, thereby facilitating transportation and installation and optimizing the spatial layout of the support frame 10.

[0081] The light board 30 is also a circuit board, and the cable 71 is connected to the circuit board, at least for powering the lamp beads 31. The light purification module 100 includes a connector 70, the cable 71 connects the connector 70 and the light board 30, and the connector 70 is connected to an external power supply line to power the lamp beads 31.

[0082] The optical purification module 100 includes shock-absorbing cotton 60 to reduce hard collisions 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 of the shock-absorbing cottons 60 are simultaneously arranged on both sides of the photocatalyst carrier 50.

[0083] The shock-absorbing cotton 60 is adhered to one side of the photocatalyst carrier 50 , or to both sides of the photocatalyst carrier 50 , which not only reduces shock but also facilitates the installation of the photocatalyst carrier 50 into the support frame 10 .

[0084] The present application also protects a refrigeration device, comprising the air duct assembly 1000 and a box body as described in any of the above technical solutions, wherein the air duct assembly 1000 is arranged in the box body. In a specific embodiment, the refrigeration device is a household refrigerator.

[0085] The beneficial effects of the present invention are: the light purification module 100 is set in the wind channel 203 and separated from the air inlet 201, so that the air flow enters the wind channel 203 from the air inlet 201 for a distance and then is purified, which will not affect the purification effect, and the air intake volume is guaranteed, reducing wind resistance and noise; the light purification module 100 is set in the widened area 230 of the second part frame 220, which does not affect the width of the wind channel 203; the light purification module 100 is tilted in the widened area 230, and the active substances generated by the light purification module 100 can diffuse along the direction of gas flow.

[0086] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0087] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air duct assembly, characterized in that: It includes an air duct panel and a light purification module arranged on the air duct panel. The air duct panel includes an air inlet, an air outlet and an air channel. The gas enters the air channel from the air inlet and leaves the air channel from the air outlet. The light purification module includes a photocatalyst carrier, which is exposed to the air channel. The light purification module is arranged at a distance from the air inlet along the direction of gas flow.

2. The air duct assembly according to claim 1, characterized in that: The air duct panel includes a frame arranged on the outside of the wind channel, the surface of the frame is higher than the surface of the wind channel, the air duct panel includes a first part frame and a second part frame, the air inlet is arranged in the first part frame, and the air outlet is arranged in the second part frame.

3. The air duct assembly according to claim 2, characterized in that: The light purification module is arranged at a position where the second portion of the frame is close to the first portion of the frame.

4. The air duct assembly according to claim 2, characterized in that: The second partial frame includes a widened area arranged close to the first partial frame, the widened area is wider than the first partial frame, and the light purification module is arranged in the widened area.

5. The air duct assembly according to claim 4, characterized in that: The air duct panel includes a recessed space formed in the widened area, the recessed space is connected to the air duct, the light purification module is arranged in the recessed space, and the light purification module forms a first acute angle with the gas flow direction.

6. The air duct assembly according to claim 5, characterized in that: The first acute angle ranges from 10° to 45°.

7. The air duct assembly according to claim 5, characterized in that: The length direction of the recessed space forms a first acute angle with the gas flow direction.

8. The air duct assembly according to claim 5, characterized in that: The air duct panel includes a step space formed in the widened area, the step space is close to the first part frame and connected to the recessed space, the step space has a first guide side surface, and the first guide side surface forms a first acute angle with the gas flow direction.

9. The air duct assembly according to claim 8, characterized in that: The light purification module includes a support frame, a lamp panel and a photocatalyst carrier fixed to the support frame; the photocatalyst carrier includes a plurality of through holes for attaching photocatalysts, and the through holes pass through the width direction of the support frame.

10. The air duct assembly according to claim 9, characterized in that: The light purification module includes a purification channel formed between the photocatalyst carrier and the light board. Along the width direction of the support frame, a side of the photocatalyst carrier away from the light board is exposed to the air channel.

11. The air duct assembly according to claim 10, characterized in that: The step space is connected to the purification channel, and an extending direction of the first guide side surface is parallel to an extending direction of the purification channel.

12. A refrigeration device, characterized in that: It comprises the air duct assembly and a box body according to any one of claims 1 to 11, wherein the air duct assembly is arranged in the box body.

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