Circulation type air treatment device for cold chain transportation

Abstract

The utility model discloses a circulating air treatment device for cold-chain transportation, which is arranged in a cold-chain transportation box body and comprises a photocatalysis unit which is arranged at a position, close to an air outlet, of the circulating air treatment device and is used for removing harmful microorganisms and bacteria in air in the cold-chain transportation box body; and the airflow driving unit is arranged in the middle of the interior of the circulating type air treatment device and provides power for circulating airflow locally generated in the cold chain transportation box body. The circulating type air treatment device can effectively remove poisonous and harmful microorganisms, bacteria and the like possibly existing in air in the cold chain transport vehicle, and the problem that food goes bad in cold chain transport is solved.

Description

Technical Field

[0001] The utility model relates to air purification equipment, in particular to a circulating air processing device used for cold chain transportation. Background Art

[0002] There are generally three temperature ranges for cold chain transportation: frozen transportation (-18 to -22 degrees), which is usually used to transport foods that have high freezing requirements, such as quick-frozen foods or fresh meat; refrigerated transportation (0 to 7 degrees), which is usually used to transport fruits, vegetables, dairy products and other foods that have strict preservation requirements; constant temperature transportation (18 to 22 degrees), which is used to transport foods that require constant temperature insulation to prevent the loss of food nutrients or deterioration due to excessively high or low temperatures. Foods that need to be frozen for preservation have a long transportation period. If the freezing measures are not perfect, they are prone to breed microorganisms and bacteria, causing food to deteriorate and rot, increasing transportation losses. For fresh products, if the product deteriorates during transportation, or the vehicle is contaminated by microorganisms, bacteria or other gaseous organic pollutants, then all cold chain logistics will be meaningless and will also pose a threat to people's health. In addition to refrigeration equipment, traditional cold chain transport vehicles do not have effective air purification equipment.

[0003] In recent years, photocatalytic purification technology has become an environmental pollution control technology with good application prospects due to its mild reaction conditions, good stability, and thorough purification effect. Titanium dioxide (TiO2) has good photocorrosion resistance and catalytic activity, and is stable, cheap, easy to obtain, non-toxic and harmless. It is currently recognized as the best photocatalyst.

[0004] Titanium dioxide photocatalysts are usually used in powder form. In practical applications, titanium dioxide needs to be fixed on a carrier to overcome the shortcomings of suspended phase titanium dioxide photocatalysts. At present, the carrier materials mainly include glass carriers such as glass sheets, glass fiber meshes, etc., ceramic carriers such as alumina ceramic sheets, honeycomb ceramic columns, foam ceramics, etc., and metal carriers such as titanium sheets, stainless steel plates, nickel foams, etc. The usual loading method is the titanium colloid loading method or the method of adding titanium oxide grains to the binder loading method, and then sintering at high temperature to prepare a loaded photocatalyst.

[0005] In order to improve the air quality inside the vehicle during cold chain transportation, there is an urgent need for a device that embeds air purification facilities into the cold chain transportation vehicle, especially a circulating air treatment device with an air purification unit manufactured using the principle of photocatalytic purification.

[0006] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0007] The purpose of the utility model is to provide a circulating air treatment device that can be used for cold chain transportation, which can effectively remove toxic and harmful microorganisms, bacteria, etc. that may exist in the air of the cold chain transportation vehicle, and avoid the problem of food spoilage during cold chain transportation.

[0008] To achieve the above-mentioned purpose, the utility model provides a circulating air treatment device for cold chain transportation, which is arranged inside the cold chain transportation box, and includes: a photocatalytic unit, which is arranged near the air outlet of the circulating air treatment device, and is used to remove harmful microorganisms and bacteria in the air inside the cold chain transportation box; an airflow driving unit, which is arranged in the middle of the circulating air treatment device, and provides power for the circulating airflow generated locally inside the cold chain transportation box.

[0009] Furthermore, in the above technical solution, the photocatalytic unit includes: a photocatalytic plate, which is a foam ceramic plate loaded with photocatalytically active components; a plurality of ultraviolet LED light sources, which are UVA band LED light sources and are evenly distributed on the bars of the grille light board, and the grille light board is arranged parallel to the photocatalytic plate for irradiating the photocatalytic plate.

[0010] Furthermore, in the above technical solution, a primary filter and a first HEPA filter may be provided at the air inlet of the circulating air treatment device, and a second HEPA filter may be provided at the air outlet of the circulating air treatment device.

[0011] Furthermore, in the above technical solution, the photocatalytic unit may be arranged at the front end of the airflow of the second HEPA filter.

[0012] Furthermore, in the above technical solution, the airflow driving unit may adopt a backward-inclined centrifugal fan.

[0013] Furthermore, in the above technical solution, the ultraviolet LED light source may be a point light source, and the wavelength of the ultraviolet LED light source may be 365 nm.

[0014] Furthermore, in the above technical solution, the foam ceramic plate can adopt an open-pore foam structure of a foam alumina-based carrier, and the photocatalyst is a foam alumina-based carrier loaded with TiO2 photocatalyst. The foam ceramic plate has an open-pore ratio of 70% to 90% and a pore density of 8 to 60 ppi.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1) The photocatalytic unit of the utility model can remove harmful microorganisms or bacteria in the cold chain transport vehicle box, play a role in sterilization and disinfection, and can minimize the deterioration of food during transportation;

[0017] 2) The combination of primary filter and multiple HEPA filters can achieve better filtering effect;

[0018] 3) The backward-inclined centrifugal fan is used as the airflow driving unit, which has low noise and can ensure the airflow strength;

[0019] 4) The device is small and neat, so that the appearance is not affected after the device is installed.

[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, and at the same time to make the above and other purposes, technical features and advantages of the utility model easier to understand, one or more preferred embodiments are listed below and described in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the installation of a circulating air treatment device for cold chain transportation according to the utility model.

[0022] Figure 2 It is a stereoscopic diagram of the circulating air handling device for cold chain transportation of the utility model (showing the internal structure).

[0023] Figure 3 It is an exploded schematic diagram of a circulating air treatment device for cold chain transportation of the utility model.

[0024] Figure 4 It is a cross-sectional view of the circulating air handling device of the utility model for cold chain transportation (showing the airflow direction).

[0025] Description of main reference numerals:

[0026] A-cold chain transport box;

[0027] 1-circulating air treatment device, 11-air inlet, 12-air outlet, 13-photocatalytic unit, 131-foam ceramic plate, 132-grid light board, 14-primary filter, 15-first HEPA filter, 16-second HEPA filter, 17-backward inclined centrifugal fan. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0029] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0030] In this document, for the convenience of description, spatial relative terms such as "below", "below", "down", "above", "above", "upper", etc. may be used to describe the relationship between one element or feature and another element or feature in the accompanying drawings. It should be understood that the spatial relative terms are intended to include different orientations of the object in use or operation in addition to the orientation depicted in the figure. For example, if the object in the figure is turned over, the element described as being "below" or "below" other elements or features will be oriented "above" the element or feature. Therefore, the exemplary term "below" can include both below and above. Objects may also have other orientations (rotated 90 degrees or other orientations) and the spatial relative terms used in this document should be interpreted accordingly.

[0031] In this document, the terms "first", "second", etc. are used to distinguish two different elements or parts, and are not used to limit a specific position or relative relationship. In other words, in some embodiments, the terms "first", "second", etc. can also be interchangeable.

[0032] The circulating air treatment device for cold chain transportation of the utility model is arranged inside the cold chain transportation box A, and includes: a photocatalytic unit 13 and an airflow driving unit. The photocatalytic unit 13 is arranged near the air outlet 12 of the circulating air treatment device 1, and is used to remove harmful microorganisms and bacteria in the air inside the cold chain transportation box A. The airflow driving unit is arranged in the middle of the circulating air treatment device 1, and provides power for the circulating airflow generated locally inside the cold chain transportation box A. Further, as Figure 2-4 As shown, the circulating air treatment device 1 is a rectangular parallelepiped structure, and the air inlet 11 and the air outlet 12 are respectively arranged on the front and rear sides of the rectangular parallelepiped. The circulating air treatment device 1 can be installed at any position in the cold chain transport box A, preferably at the upper position. The air in the cold chain transport box A enters from the air inlet 11 under the action of the air flow driving unit, is purified and filtered by the photocatalytic unit 13, and is discharged from the air outlet 12, and returns to the cold chain transport box A, forming an air flow cycle.

[0033] Further Figure 2-4 As shown, the circulating air treatment device 1 also includes a primary filter 14 and a first HEPA filter 15. Both the primary filter 14 and the first HEPA filter 15 are arranged near the air inlet 11. The primary filter 14 is made of metal and has a large mesh, and is mainly used to filter larger particles of debris visible to the naked eye in the air. The first HEPA filter 15 is close to the primary filter 14 and is located at the rear end of the airflow of the primary filter 14, and is used to filter particles greater than or equal to 0.3 μm. In order to further improve the filtering effect, a second HEPA filter 16 is arranged at the air outlet 12 of the circulating air treatment device 1. The photocatalytic unit 13 of the utility model is arranged at the front end of the airflow of the second HEPA filter 16.

[0034] Further Figure 2-4 As shown, the photocatalytic unit 13 includes a photocatalytic plate and a plurality of ultraviolet LED light sources. Preferably, but not restrictively, the photocatalytic plate is a foam ceramic plate 131 loaded with photocatalytically active components. The plurality of ultraviolet LED light sources are UVA band LED light sources (not shown in the figure) and are evenly distributed on the bars of the grille light plate 132. The grille light plate 132 is arranged parallel to the foam ceramic plate 131 and is spaced a certain distance apart for irradiating the foam ceramic plate 131. The grille light plate can be arranged on one side or on both sides of the foam ceramic plate. The circulating air treatment device 1 is a rectangular frame structure, and the foam ceramic plate 131 and the grille light plate 132 can be fixed by angle steel or similar means.

[0035] Further Figure 2-4 As shown, preferably but not restrictively, in order to ensure the continuity and strength of air flow and minimize noise, the airflow driving unit adopts a backward-inclined centrifugal fan 17. The backward-inclined centrifugal fan 17 is arranged and fixed in the middle of the circulating air treatment device 1. The backward-inclined centrifugal fan 17 has high airflow driving efficiency and a power curve without overload. Its power curve usually reaches the maximum value in the middle of the common range, is not easy to overload, and the blades and impellers have high structural strength, low noise, and large air volume.

[0036] Further Figure 4 As shown, driven by the backward-inclined centrifugal fan 17 located in the middle of the device, air enters from the air inlet 11, and after being initially filtered by the metal primary filter 14 and the first HEPA filter 15, the airflow vertically enters the foam ceramic plate 131 irradiated by the ultraviolet LED light source for photocatalytic filtration, and the purified gas flows out through the air outlet 12 and re-enters the cold chain transport box A, completing the airflow circulation.

[0037] Further, the opening rate of the foam ceramic plate 131 is 70% to 90%, and the pore density is 8 to 60 ppi. Preferably, but not restrictively, the photocatalytic foam ceramic plate 131 adopts an open-pore foam structure of a foam alumina-based carrier, and the photocatalyst is a foam alumina-based carrier loaded with TiO2 photocatalyst. In the photocatalyst, TiO2 grains are embedded and dispersed on the outer surface of the photocatalyst, and among the TiO2 grains on the outer surface of the photocatalyst, TiO2 grains with a particle size of 5 to 50 μm account for more than 70%.

[0038] In one or more exemplary embodiments of the present invention, the ultraviolet LED light source is preferably a point light source. More preferably, the wavelength of the ultraviolet LED light source is 365nm. The use of an ultraviolet LED light source in the UVA band can improve photoelectric efficiency and reduce energy loss. The wavelength of ultraviolet light emitted by the ultraviolet LED light source is 280 to 390nm, which can be a single wavelength or a mixed wavelength.

[0039] The circulating air treatment device of the utility model adopts the air intake direction perpendicular to the photocatalytic plate, which makes the filtration and purification more sufficient and easy to install, and can perform efficient circulation purification treatment on the cold chain transportation environment. The circulating air treatment device of the utility model can be used for air filtration in cold chain transportation equipment, effectively disinfect harmful microorganisms and bacteria, prevent food spoilage in the cold chain transportation link, and effectively purify organic pollutants, has good photocatalytic degradation performance, and has good application prospects.

[0040] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. Any simple modifications, equivalent changes and modifications made to the above exemplary embodiments should fall within the scope of protection of the utility model.

Claims

1. A circulating air treatment device for cold chain transportation, arranged inside a cold chain transportation box, characterized in that: include: A photocatalytic unit, which is arranged near the air outlet of the circulating air treatment device and is used to remove harmful microorganisms and bacteria in the air of the cold chain transport box; The airflow driving unit is arranged in the middle of the circulating air treatment device to provide power for the circulating airflow generated locally in the cold chain transport box.

2. The circulating air treatment device for cold chain transportation according to claim 1, characterized in that: The photocatalytic unit comprises: A photocatalytic plate, which is a foam ceramic plate loaded with photocatalytically active components; A plurality of ultraviolet LED light sources are UVA band LED light sources and are evenly distributed on the bars of a grille light plate. The grille light plate is arranged in parallel with the photocatalytic plate and is used for irradiating the photocatalytic plate.

3. The circulating air treatment device for cold chain transportation according to claim 1 or 2, characterized in that: A primary filter and a first HEPA filter are arranged at the air inlet of the circulating air treatment device.

4. The circulating air treatment device for cold chain transportation according to claim 1 or 2, characterized in that: A second HEPA filter is arranged at the air outlet of the circulating air treatment device.

5. The circulating air treatment device for cold chain transportation according to claim 4, characterized in that: The photocatalytic unit is arranged at the front end of the air flow of the second HEPA filter.

6. The circulating air treatment device for cold chain transportation according to claim 1, characterized in that: The airflow driving unit is a backward-inclined centrifugal fan.

7. The circulating air treatment device for cold chain transportation according to claim 2, characterized in that: The ultraviolet LED light source is a point light source, and the wavelength of the ultraviolet LED light source is 365nm.

8. The circulating air treatment device for cold chain transportation according to claim 2, characterized in that: The foam ceramic plate adopts an open-pore foam structure of a foam alumina-based carrier, and the photocatalyst is a photocatalyst of TiO2 loaded on the foam alumina-based carrier.

9. The circulating air treatment device for cold chain transportation according to claim 8, characterized in that: The open porosity of the foam ceramic plate is 70% to 90%, and the pore density is 8 to 60 ppi.

Images