Photocatalysis module and clothes drying equipment
By using photocatalytic modules in drying equipment, the airflow is purified by using photocatalytic reactions, and the pollution problem of airflow carrying bacteria and odor molecules is solved, achieving higher cleanliness and user experience.
Patent Information
- Application Number
- CN202420773688.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-04-15
AI Technical Summary
In drying equipment, bacteria and odor molecules carried by the airflow are prone to pollute the environment and may cause odors in clothes.
A photocatalytic module is designed, including a catalyst, a light source and a fixture, to purify the airflow through photocatalytic reactions to achieve sterilization, disinfection and deodorization.
It improves the cleanliness of airflow, reduces odor and bacteria pollution, and improves user experience and product evaluation.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of clothing processing, and in particular to a photocatalytic module and a clothes drying device. Background Art
[0002] This section is intended to provide a background or context to the embodiments of the application that are recited in the claims. No description herein is admitted to be prior art by inclusion in this section.
[0003] In the related art, a clothes drying device contacts wet clothes through airflow, and the airflow takes away the water in the wet clothes to dry the clothes. In the process of drying clothes by the clothes drying device, the airflow after contacting the wet clothes is likely to carry impurities such as bacteria and / or odor molecules, which are likely to pollute the environment. If the airflow circulates to dry the clothes, the bacteria and odor molecules repeatedly contact the clothes, which is likely to cause the clothes to produce odor. Utility Model Content
[0004] In view of this, the present application hopes to provide a photocatalytic module and a clothes drying device, which can be used to sterilize and deodorize the airflow.
[0005] The present application provides a photocatalytic module, comprising:
[0006] Catalytic device, including catalyst;
[0007] A light source, at least one side of the light source has the catalyst, and the light beam emitted by the light source is used to irradiate the catalyst;
[0008] A fixing device, to which at least one of the light source and / or the catalytic device is connected.
[0009] In some embodiments, the fixing device is formed with a containing cavity and at least two vents, the vents are communicated with the containing cavity, and the light source and the catalytic device are both located in the containing cavity.
[0010] In some embodiments, the fixing device comprises:
[0011] A housing, comprising the accommodating cavity with a placement opening and the vent;
[0012] A fixing seat is arranged at the placement opening and connected to the shell, and both the light source and the catalytic device are connected to the fixing seat.
[0013] In some embodiments, the vents are formed on two opposite end surfaces of the housing.
[0014] In some embodiments, the fixing seat includes a seat body and a mounting portion, the seat body closes the placement port, the mounting portion is connected to one side of the seat body and is located in the accommodating cavity, and the light source and the catalytic device are both connected to the mounting portion.
[0015] In some embodiments, the mounting portion is formed with a mounting hole, and the light source is inserted into the mounting hole.
[0016] In some embodiments, the catalytic device is wrapped around the light source and the mounting portion, and the catalytic device and the mounting portion are interference fit.
[0017] In some embodiments, the photocatalytic module includes a tie member, which fastens the catalytic device to the mounting portion.
[0018] In some embodiments, the photocatalytic module includes an electrical terminal electrically connected to the light source, and the electrical terminal passes through the fixing seat and extends out of the accommodating cavity.
[0019] In some embodiments, the light source includes at least two light-emitting segments, at least one side of the light-emitting segment along the first direction has the vent, and at least two of the light-emitting segments are spaced apart along the second direction, wherein the first direction and the second direction are perpendicular to each other.
[0020] In some embodiments, the circumferential sides of the light source are all wrapped with the catalyst.
[0021] In some embodiments, the catalytic device includes a mesh carrier, the catalyst is disposed on the mesh carrier, and the mesh carrier is connected to the fixing device.
[0022] In some embodiments, the porosity of the mesh carrier is 60%-98%; and / or the mesh carrier is made of metal.
[0023] The present application also provides a clothes drying device, including:
[0024] A clothes drying drum having a clothes drying chamber;
[0025] In any of the above-mentioned photocatalytic modules, the catalytic device is used to catalyze the airflow from the clothes drying chamber.
[0026] The photocatalytic module provided in the embodiment of the present application, in the first aspect, has a catalyst on at least one side of the light source, and the light beam of the light source can directly irradiate the catalyst, reducing the loss on the light beam propagation path and improving the efficiency of light energy utilization; light energy excites the catalyst to produce a catalytic effect, causing the impurities in the airflow to undergo a chemical reaction, such as an oxidation-reduction reaction; it can achieve the purpose of disinfection, sterilization and / or deodorization to a certain extent, improve the cleanliness of the airflow, and improve the user experience. In the second aspect, a fixing device is used to provide an installation position for at least one of the light source and / or the catalytic device, and the fixing device can be connected to other structures of the clothes drying equipment to fix the photocatalytic module. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 is a schematic structural diagram of a clothes drying device in an embodiment of the present application;
[0028] Figure 2 for Figure 1 A rear view of the structure with the wind shield omitted;
[0029] Figure 3 for Figure 2 Schematic diagram of the cross-section at AA in the middle;
[0030] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;
[0031] Figure 5 for Figure 2 a front view of the structure shown;
[0032] Figure 6 for Figure 5 The enlarged schematic diagram at C in the middle;
[0033] Figure 7 This is a schematic diagram of the structure of a photocatalytic module in one embodiment of the present application;
[0034] Figure 8 for Figure 7 a schematic diagram of another view of the structure shown;
[0035] Fig. 9 for Figure 8 Schematic diagram of the cross section at DD in the middle;
[0036] Fig.10 for Figure 7 Exploded view of the photocatalytic module shown.
[0037] Description of Reference Numerals
[0038] Photocatalytic module 100; catalytic device 1; mesh carrier 11; placement cavity 1a; light source 2; light emitting section 21; connecting section 22; fixing device 3; accommodating cavity 3a; vent 3b; housing 31; fixing seat 32; seat body 321; mounting portion 322; power terminal 4; isolation sheet 5;
[0039] Box body 200; rear side wall 210 of box body 200; air supply port 210a; air return port 210b; wind cover 300. DETAILED DESCRIPTION
[0040] In the absence of conflict, the embodiments and technical features in the embodiments of the present application may be combined with each other, and the detailed descriptions in the specific implementation methods should be understood as explanations of the purpose of the present application and should not be regarded as improper limitations on the present application.
[0041] It should be noted that in the embodiments of the present application, down refers to the direction where the ground is located, and up is opposite to down; front refers to the direction toward the user, and back is opposite to front; left refers to the direction where the left hand side is located when the user is at the front, and right is opposite to left. The up-down direction, the front-back direction, and the left-right direction are three-dimensional vertical coordinate systems that are perpendicular to each other. In the embodiments of the present application, the orientations or positional relationships of "up", "down", "front", "back", "left", and "right" are based on the orientations or positional relationships shown in the accompanying drawings. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0042] It should be noted that in the embodiments of the present application, the unit "mm" refers to millimeters; the unit "g / cm 3 ” is grams per cubic centimeter.
[0043] See also Figure 7 , the present application embodiment provides a photocatalytic module 100, the photocatalytic module 100 is used to purify airflow through photocatalytic reaction. Figures 1 to 6 , the photocatalytic module 100 can be used in a clothes drying device.
[0044] See also Figures 7 to 10 The photocatalytic module 100 includes a catalytic device 1, a light source 2 and a fixing device 3. The catalytic device 1 includes a catalyst; at least one side of the light source 2 has a catalyst, and the light beam emitted by the light source 2 is used to irradiate the catalyst. At least one of the light source 2 and / or the catalytic device 1 is connected to the fixing device 3.
[0045] The light source 2 is used to provide a light beam and illuminate the catalyst, so that the impurities in the airflow react chemically under the catalytic action of the catalyst, achieving at least one function such as sterilization, disinfection and / or deodorization. The principle of the photocatalytic module 100 is: when the catalyst is excited by light with a photon energy not less than its bandgap width, the electrons will jump from the valence band to the conduction band, and the holes will remain in the valence band, forming photogenerated electron-hole pairs; the photogenerated electron-hole pairs are separated and migrated to the catalyst surface respectively; the electrons and holes migrated to the catalyst surface will react chemically with the impurities in the airflow, such as odor molecules, such as oxidation-reduction reactions, respectively, decomposing the impurities, such as odor molecules, into inorganic substances such as carbon dioxide and water, and can also remove toxic gases such as nitrides and sulfides, thereby achieving the effect and purpose of removing odor molecules; at the same time, the strong oxidizing property of the catalyst can kill microorganisms such as bacteria and viruses, achieving the effect and purpose of disinfection and sterilization.
[0046] The photocatalytic module 100 provided in the embodiment of the present application, in the first aspect, at least one side of the light source 2 has a catalyst, and the light beam of the light source 2 can directly irradiate the catalyst, reducing the loss on the light beam propagation path and improving the efficiency of light energy utilization; light energy excites the catalyst to produce a catalytic effect, causing impurities in the airflow to undergo a chemical reaction, such as an oxidation-reduction reaction; it can achieve the purpose of disinfection, sterilization and / or deodorization to a certain extent, improve the cleanliness of the airflow, and improve the user experience. In the second aspect, a fixing device 3 is used to provide an installation position for at least one of the light source 2 and / or the catalytic device 1, and the fixing device 3 can be connected to other structures of the drying equipment to fix the photocatalytic module 100.
[0047] The embodiment of the present application also provides a clothes drying device, which includes a clothes drying drum and a photocatalytic module 100 in any one of the embodiments of the present application, wherein the clothes drying drum has a clothes drying chamber, and the catalytic device 1 is used to catalyze the airflow from the clothes drying chamber. In other words, the airflow from the clothes drying chamber can flow through the catalytic device 1. The clothes drying chamber is used to place and process clothes, for example, the airflow flows through the clothes drying chamber to dry clothes. The photocatalytic effect of the catalytic device 1 can achieve the purpose of disinfecting, sterilizing and / or deodorizing the airflow to a certain extent, improve the cleanliness of the airflow, improve the user experience, and improve the product evaluation.
[0048] In one embodiment, the clothes drying drum is rotatable, a clothes loading port communicating with the clothes drying chamber is formed on the front side wall of the clothes drying drum, and at least one air inlet communicating with the clothes drying chamber is formed on the rear side wall of the clothes drying drum. In a plane projection perpendicular to the front-back direction, at least part of the photocatalytic module 100 is located within the movement trajectory of at least one air inlet.
[0049] The airflow can enter the clothes drying chamber through the air inlet. It is understandable that the number of the air inlet can be one or more, for example: two, three, four or five, etc.
[0050] The user can put clothes into the drying chamber or take clothes out of the drying chamber through the clothes feeding port. During the rotation of the drying drum, the drying drum drives the clothes in the drying chamber to move, thereby improving the clothes processing efficiency.
[0051] In the plane projection perpendicular to the front-to-back direction, at least part of the photocatalytic module 100 is located within the range of the motion trajectory of at least one air inlet. For example, at least part of the photocatalytic module 100 is located within the range of the motion trajectory of one air inlet, and during the rotation of the dryer, the photocatalytic module 100 can be seen through the air inlet. For another example, at least part of the photocatalytic module 100 is located within the range of the motion trajectory of two air inlets, and during the rotation of the dryer, the photocatalytic module 100 can be seen through the two air inlets. It is understandable that at least part of the photocatalytic module 100 can also be located within the range of the motion trajectory of more than two air inlets. In this way, during the rotation of the dryer, at least part of the photocatalytic module 100 will be exposed to at least one air inlet.
[0052] In this embodiment, during the rotation of the dryer, at least a portion of the photocatalytic module 100 will be exposed to at least one air inlet, and the user can visually view at least the portion of the photocatalytic module 100 exposed to the air inlet from the front through the clothing inlet and at least one air inlet, thereby achieving a visualization effect of the photocatalytic module 100, giving the user a good experience and enhancing the sense of technology and aesthetics.
[0053] In some embodiments, the rotation axis of the drying drum may extend in the front-rear direction. The drying device may also be referred to as a drum drying device.
[0054] In some embodiments, the clothes drying drum is substantially in the shape of a hollow cylinder.
[0055] In one embodiment, the photocatalytic module 100 may be located in the clothes drying chamber. For example, the photocatalytic module 100 may be connected to the clothes drying drum so as to rotate synchronously with the clothes drying drum. In other words, taking the plane perpendicular to the front-to-back direction as the projection plane, at least part of the projection of the photocatalytic module 100 is located within the projection range of at least one air inlet.
[0056] In one embodiment, in a plane projection perpendicular to the front-rear direction, at least a portion of the projection of at least one air inlet is located within the projection range of the clothing loading port. In this way, the user can more intuitively see the photocatalytic module 100 exposed to the air inlet through the clothing loading port.
[0057] In one embodiment, the clothes drying device includes a circulating air duct, the circulating air duct connects the air inlet and the air outlet of the clothes drying chamber, and the photocatalytic module 100 is located in the circulating air duct. The circulating air duct is used to provide a circulating airflow that repeatedly flows through the clothes drying chamber.
[0058] When clothes are dried by a clothes dryer, the airflow that comes into contact with the wet clothes will carry impurities such as bacteria and / or odor molecules from the clothes. The airflow carrying impurities enters the circulating air duct. If the impurities such as bacteria and odor molecules are not removed, they may repeatedly come into contact with the clothes with the circulating airflow, easily causing the clothes to produce odor.
[0059] In this embodiment, the photocatalytic module 100 is located in the circulating air duct, that is, the photocatalytic module 100 can be located outside the drying chamber, and the airflow passes through the photocatalytic module 100 for photocatalytic reaction and then enters the drying chamber through the air inlet. In this way, the photocatalytic module 100 can be prevented from contacting the clothes in the drying chamber, and the probability of the photocatalytic module 100 contacting hair scraps and the like can also be reduced.
[0060] The airflow can circulate between the circulating air duct and the clothes drying chamber. For example, the hot and humid airflow after contacting the wet clothes enters the circulating air duct through the air outlet and becomes a dry hot airflow after dehumidification and heating. The dry hot airflow can enter the clothes drying chamber through the air inlet after undergoing a photocatalytic reaction in the photocatalytic module 100. In this way, the water vapor in the airflow can be prevented from contacting the photocatalytic module 100 as much as possible. Dehumidification is to reduce the humidity of the airflow, and heating is to increase the temperature of the airflow, so that the hot and humid airflow is converted into a dry hot airflow. It is understandable that dehumidification can be performed first and then heating.
[0061] It should be noted that impurities include but are not limited to bacteria, odor molecules and / or viruses, etc. Odor molecules are usually organic matter.
[0062] In one embodiment, please refer to Figures 1 to 6 The clothes drying device includes a box body 200 and a door body with a window. The clothes drying drum is located in the box body 200. The front side wall of the box body 200 is formed with a take-in and put-out opening connected to the clothes loading opening. The door body is used to selectively open or close the take-in and put-out opening. When the door body is in a state of opening the take-in and put-out opening, the user can put clothes into the clothes drying chamber or take clothes out of the clothes drying chamber through the take-in and put-out opening and the clothes loading opening. When the door body is in a state of closing the take-in and put-out opening, the clothes drying device can be started to dry clothes or perform other treatments on the clothes.
[0063] The viewing window is a light-transmitting structure and is usually used to check the status of the clothes in the drying chamber.
[0064] When the door is closed with the access opening, in the plane projection perpendicular to the front-to-back direction, at least part of the projection of the photocatalytic module 100 is within the projection range of the viewing window. In other words, when the door is closed with the access opening, with the plane perpendicular to the front-to-back direction as the projection plane, at least part of the projection of the viewing window overlaps with at least part of the projection of the photocatalytic module 100. In this way, when the door is closed with the access opening, the user can also view the photocatalytic module 100 through the viewing window, the clothing access opening and the air inlet. For example, when the door is closed with the access opening, the clothes drying device can start working, and during the rotation of the clothes drying drum, the air inlet will pass over the photocatalytic module 100, and the user can view the working status of the photocatalytic module 100 through the viewing window, the clothing access opening and the air inlet.
[0065] The structure of the window and the structure of the door body can be the structures of the prior art, and this application will not repeat them. The window can be light-transmissive, for example, the light transmittance of the window can be not less than 85%. Exemplarily, the window can be made of materials such as transparent glass or transparent plastic to achieve light transmission.
[0066] In some embodiments, the box body 200 may be substantially in the shape of a hexahedron, for example, a cube or a cuboid.
[0067] In one embodiment, please refer to Figures 1 to 6 , the rear side wall 210 of the housing 200 is formed with an air supply port 210a connected to the air inlet, and the photocatalytic module 100 is located at the rear side of the air supply port 210a. In this way, the photocatalytic module 100 is located outside the clothes drying drum, which can prevent the clothes in the clothes drying chamber from contacting the photocatalytic module 100, and the air flow can flow through the photocatalytic module 100, the air supply port 210a and the air inlet in sequence to enter the clothes drying chamber. The photocatalytic module 100 is located at the rear side of the air supply port 210a. In other words, in the plane projection perpendicular to the front-to-back direction, at least part of the projection of the photocatalytic module 100 is located within the projection range of the air supply port 210a, and the user can view the photocatalytic module 100 through the air supply port 210a; and the photocatalytic module 100 is far away from the clothes drying drum, which can prevent the photocatalytic module 100 from interfering with the rotation of the clothes drying drum.
[0068] The number of air outlets 210a is not limited, and the air outlet 210a may be one or more, for example, the air outlet 210a may be two, three, four or five, etc. The photocatalytic module 100 may be disposed at the rear side of at least one air outlet 210a.
[0069] In one embodiment, please refer to Figure 2 , the photocatalytic module 100 is connected to the box 200. The box 200 always remains in a static state, and the box 200 is used to provide an installation position for the photocatalytic module 100, which is convenient for the layout of the photocatalytic module 100, for example, the layout of the electrical wiring connected to the light source 2.
[0070] The photocatalytic module 100 and the housing 200 may be connected in a non-detachable or detachable manner. For example, the photocatalytic module 100, such as the fixing device 3, and the housing 200 may be detachably connected, for example, by screw connection, bolt connection, and / or clamping.
[0071] It should be noted that the location of the photocatalytic module 100 where the air outlet 210a is exposed is not limited. For example, at least part of the housing 31 may expose the air outlet 210a, or both the housing 31 and other structures may expose the air outlet 210a. The location of the photocatalytic module 100 where the air inlet and the clothing inlet are exposed can also be obtained based on the above description, and this application will not repeat them.
[0072] In one embodiment, please refer to Figures 1 to 3 , Figure 3 The direction of the airflow is schematically shown by a curved arrow. The clothes drying device includes an air hood 300. The rear side wall 210 of the housing 200 is formed with a return air port 210b. The height of the return air port 210b is lower than the height of the air supply port 210a. The air hood 300 is arranged around the air supply port 210a and the return air port 210b, and defines an air supply channel together with the rear side wall 210 of the housing 200. At least part of the photocatalytic module 100 is located in the air supply channel. Exemplarily, the air supply channel is part of the circulating air duct. The airflow enters the air supply channel through the return air port 210b, and then enters the air inlet through the air supply port 210a. At least part of the photocatalytic module 100 is located in the air supply channel, which is not only convenient for protecting the photocatalytic module 100 and preventing other objects from touching and damaging the photocatalytic module 100, but also convenient for the photocatalytic module 100 to fully contact with the airflow in the air supply channel to achieve a good catalytic impurity removal effect.
[0073] In some embodiments, the air shield 300 may be detachably connected to the rear side wall 210 of the box body 200 , for example, by screw connection, bolt connection and / or clamping connection, etc.
[0074] In one embodiment, the clothes drying device includes a heat exchange component located in the circulating air duct, and the heat exchange component is used to exchange heat with the airflow in the circulating air duct, thereby dehumidifying and heating.
[0075] As an example, the circulating air duct includes a heat exchange channel, and the two ends of the heat exchange channel are connected to the air outlet and the return air outlet 210b respectively, and the heat exchange component is located in the heat exchange channel. That is to say, the heat exchange channel is located upstream of the air supply channel along the air flow direction in the circulating air duct, and the air flow flows through the air outlet, the heat exchange channel, the return air outlet 210b, the air supply channel, the air supply outlet 210a and the air inlet in sequence. The hot and humid airflow in the drying chamber can enter the heat exchange channel through the air outlet, and after heat and mass exchange with the heat exchange component, it is converted into a dry hot airflow. The dry hot airflow enters the air supply channel through the return air outlet 210b, passes through the photocatalytic module 100 in the air supply channel to perform a photocatalytic reaction, and then flows back to the drying chamber through the air supply outlet 210a and the air inlet.
[0076] The clothes drying device can adopt a heat pump drying method. In one embodiment, the heat exchange component includes a condenser and an evaporator, and the condenser and the evaporator are both arranged in the heat exchange channel. The refrigerant can circulate in the condenser and the evaporator. The circulating air duct provides a circulating airflow to the clothes drying chamber. The refrigerant in the evaporator and the condenser exchanges heat with the airflow in the heat exchange channel to achieve heating and condensing the airflow. On the flow path of the airflow in the heat exchange channel, the airflow first flows through the evaporator and then flows through the condenser. Specifically, the evaporator is used to cool and dehumidify the hot and humid airflow from the clothes drying chamber into a dry and cold airflow; the condenser heats the dry and cold airflow into a dry and hot airflow and flows it back into the clothes drying chamber; the dry and hot airflow returning to the clothes drying chamber contacts the wet clothes to form a hot and humid airflow again, completing a drying cycle. By repeatedly running the drying cycle, a circulating airflow is continuously provided to the clothes drying chamber to dry the clothes.
[0077] In some embodiments, the clothes drying device further comprises a compressor and a throttling device, and the compressor, condenser, throttling device and evaporator are connected in series through pipelines to form a heat pump system, and the refrigerant can circulate in the heat pump system. The airflow in the circulating air duct exchanges heat with the refrigerant in the evaporator and the condenser to form a dry hot airflow.
[0078] The working principle of the heat pump system is as follows: the compressor sucks in low-pressure gaseous refrigerant and compresses it into high pressure before discharging; the discharged high-pressure refrigerant enters the condenser, and the refrigerant in the condenser transfers heat to the airflow to condense into high-pressure liquid; the high-pressure liquid refrigerant flows through the throttling device to throttle and reduce pressure, and then becomes a low-pressure and low-temperature gas-liquid two-phase mixture and enters the evaporator; the refrigerant in the evaporator absorbs the heat of the airflow and becomes a low-pressure gas; the low-pressure gaseous refrigerant is sucked in by the compressor again; this cycle is repeated to achieve heat exchange. In other words, the evaporator is used to cool and dehumidify the hot and humid airflow from the drying chamber to form a dry cold airflow, and the condenser heats the dry cold airflow into a dry hot airflow and then flows back to the drying chamber. The dry hot airflow flowing back to the drying chamber contacts the wet clothes and forms a hot and humid airflow again, completing a drying cycle. By repeatedly running the drying cycle, circulating airflow is continuously provided to the drying chamber to dry the clothes.
[0079] Exemplarily, both the evaporator and the condenser may be fin-tube heat exchangers.
[0080] Exemplarily, the throttling device includes but is not limited to an electronic expansion valve and the like.
[0081] In one embodiment, the clothes drying device includes a wind wheel, which is used to drive the airflow. Exemplarily, the wind wheel is located in the circulating air duct, specifically, the wind wheel can be located in the heat exchange channel and between the heat exchange component and the return air port 210b. In the process of drying clothes, the wind wheel is used to drive the airflow flowing through the clothes to flow through the evaporator and the condenser in sequence, and then blow to the clothes to form circulating wind. The wind wheel can speed up the airflow and improve the drying efficiency.
[0082] In one embodiment, the clothes drying device includes a filter, and the filter is used to filter the airflow from the clothes drying chamber. That is, the filter is located on the flow path of the airflow. The airflow after contacting the wet clothes, such as the hot and humid airflow, is easy to carry the hair from the clothes, and the hair can be filtered by the filter.
[0083] In one embodiment, the photocatalytic module 100 is located on the side of the filter close to the air inlet. In other words, the photocatalytic module 100 is located downstream of the filter along the airflow direction in the circulating air duct. In this way, the airflow is first filtered by the filter and then flows through the photocatalytic module 100 for photocatalytic reaction, which can reduce the probability of hair dandruff clogging the photocatalytic module 100.
[0084] For example, in some embodiments, a filter is provided at the air outlet; and / or a filter is provided in the heat exchange channel, and the filter is located on the side of the heat exchange component close to the air outlet. In other words, the filter can be one or more. The airflow from the drying chamber is first filtered by the filter, and then flows through the heat exchange component and the photocatalytic module 100.
[0085] It should be noted that, in the embodiments of the present application, a plurality includes a number of two or more.
[0086] In one embodiment, please refer to Figure 2 and Figure 5 , the photocatalytic module 100 is arranged at the upper part of the housing 200. On the one hand, the height of the photocatalytic module 100 is relatively high to prevent the photocatalytic module 100 from being blocked by clothes when there are clothes placed in the drying chamber. On the other hand, the hair residue in the airflow tends to move downward, and the high height of the photocatalytic module 100 can also reduce the possibility of the photocatalytic module 100 contacting the hair residue.
[0087] It should be noted that the upper portion of the box body 200 is a portion above the perpendicular midline L extending in the horizontal direction, with the plane perpendicular to the front-rear direction as the projection surface.
[0088] In one embodiment, please refer to Figure 8 and Fig. 9 The fixing device 3 is formed with a receiving cavity 3a and at least two vents 3b, the vents 3b are connected to the receiving cavity 3a, the light source 2 and the catalytic device 1 are both located in the receiving cavity 3a, and the airflow enters and exits the receiving cavity 3a through the at least two vents 3b.
[0089] In this embodiment, the airflow enters the containing chamber 3a through the vent 3b, and the light source 2 is used to provide a light beam and irradiate the catalyst, so that the impurities in the airflow undergo a chemical reaction under the catalytic action of the catalyst, thereby achieving at least one function of sterilization, disinfection and / or deodorization. The airflow after the photocatalytic action flows out of the containing chamber 3a through the vent 3b. The fixing device 3 can not only protect the catalytic device 1, but also allow the airflow to fully contact the catalyst in the containing chamber 3a, thereby improving the purification effect.
[0090] It should be noted that, in the embodiment of the present application, at least two includes a quantity of two and more than two.
[0091] In one embodiment, please refer to Figure 3 , Figure 4 and Figure 7 The fixing device 3 is provided with a vent 3b on at least one side along a first direction, and the first direction intersects with the front-rear direction. That is, the direction in which the air flows in and out of the accommodating cavity 3a intersects with the front-rear direction.
[0092] For example, the fixing device 3 is formed with a vent 3b on one side along the first direction. For another example, the fixing device 3 is formed with vents 3b on both sides along the first direction. In this way, it is convenient for airflow to enter the accommodating cavity 3a from the vent 3b on one side along the first direction, and to flow out from the vent 3b on the other side along the first direction after the catalytic reaction, so that the air path is smoother and the airflow resistance is reduced.
[0093] In this embodiment, hair debris may be mixed in the airflow, and there is a risk of the hair debris clogging the pores of the mesh carrier 11. The direction of the airflow entering and exiting the accommodating chamber 3a intersects with the front-to-back direction, extending the path of the airflow entering the accommodating chamber 3a. For example, extending the flow time of the airflow in the air supply channel can reduce the flow rate of the airflow entering the vent 3b to a certain extent. The hair debris that may remain in the airflow and the airflow can be separated in advance in the air supply channel, and the separated airflow enters the accommodating chamber 3a through the vent 3b, thereby extending the service life of the catalyst.
[0094] In one embodiment, please refer to Figures 7 to 10The fixing device 3 includes a shell 31 and a fixing seat 32. The shell 31 includes a receiving cavity 3a having a placement opening and a vent 3b. The fixing seat 32 is arranged at the placement opening and connected to the shell 31. The light source 2 and the catalytic device 1 are both connected to the fixing seat 32. The light source 2 and the catalytic device 1 can be placed in the receiving cavity 3a through the placement opening. For example, the light source 2 and the catalytic device 1 can be first connected to the fixing seat 32 to form a whole, and then the whole can be assembled to the shell 31. The assembly method is simple and the operation is convenient.
[0095] In some embodiments, the housing 31 may be light-transmissive. For example, the light transmittance of the housing 31 may be not less than 85%, so that the light beam of the light source 2 can be transmitted through the housing 31, and the user can see the light beam from the light source 2. Exemplarily, the housing 31 may be made of transparent glass or transparent plastic to achieve light transmission. It is understood that the housing 31 may also be opaque. The housing 31 may be insulated.
[0096] In some embodiments, the housing 31 is substantially a hollow structure with one side opened along the third direction.
[0097] In one embodiment, please refer to Fig. 9 The two opposite end surfaces of the housing 31 are formed with vents 3b. In this way, the air path is smoother and the air flow resistance is reduced.
[0098] Exemplarily, two end surfaces of the housing 31 opposite to each other along the first direction are formed with vents 3b. The airflow enters the accommodating cavity 3a from the vent 3b on one side of the housing 31 along the first direction, and flows out from the vent 3b on the other side of the housing 31 along the first direction after the catalytic reaction, so that the air path is smoother and the airflow resistance is reduced.
[0099] It is understandable that the housing 31 may have vents 3b only on two end faces opposite to each other in the first direction. That is, the end faces of the housing 31 in other directions do not have vents 3b. In this way, it is convenient for the airflow to flow in a directional manner. Of course, in other embodiments, the end faces of the housing 31 in other directions may also have vents 3b.
[0100] In one embodiment, please refer to Figures 8 to 10 The fixing seat 32 includes a seat body 321 and a mounting portion 322. The seat body 321 closes the placement opening. The mounting portion 322 is connected to one side of the seat body 321 and is located in the accommodating cavity 3a. The light source 2 and the catalytic device 1 are both connected to the mounting portion 322. The fixing seat 32 has a simple structure. The mounting portion 322 is located in the accommodating cavity 3a. The housing 31 can limit the mounting portion 322. The light source 2 and the catalytic device 1 are both connected to the mounting portion 322, which can reduce the shaking of the light source 2 and the catalytic device 1 in the accommodating cavity 3a, improve stability, and reduce the risk of bending or breaking of the light source 2 and the catalytic device 1 under stress.
[0101] In some embodiments, the seat body 321 can seal the placement opening to prevent airflow from flowing through the gap between the seat body 321 and the housing 31 .
[0102] In one embodiment, the mounting portion 322 is formed with a mounting hole, and the light source 2 is inserted into the mounting hole. The wall surface of the mounting hole can position and limit the light source 2, thereby improving the stability of the installation.
[0103] In one embodiment, please refer to Fig.10 , the catalytic device 1 is wrapped around the light source 2 and the mounting portion 322, and the catalytic device 1 is interference fit with the mounting portion 322. Specifically, the catalytic device 1 has a placement cavity 1a and an assembly port connected to the placement cavity 1a, the mounting portion 322 and the light source 2 are both located in the placement cavity 1a, and the mounting portion 322 is interference fit with the assembly port. Exemplarily, the mesh carrier 11 of the catalytic device 1 has a placement cavity 1a and an assembly port. The catalytic device 1 is fixed to the mounting portion 322 by interference fit, and the installation method is simple and easy to operate, which can effectively improve production efficiency.
[0104] In some embodiments, the fixing base 32 may be insulated, and the fixing base 32 may be made of insulating materials such as plastic.
[0105] In one embodiment, the photocatalytic module 100 includes a tie member, which fastens the catalytic device 1 to the mounting portion 322. The tie member can surround the outer periphery of the catalytic device 1 and tighten to fasten the catalytic device 1 to the mounting portion 322. In this way, the catalytic device 1 is further prevented from falling off the mounting portion 322.
[0106] The specific type of the restraint is not limited. For example, the restraint may include a clamp, a buckle or a strap, etc.
[0107] In one embodiment, please refer to Figures 7 to 9 The photocatalytic module 100 includes a power terminal 4 electrically connected to the light source 2, and the power terminal 4 passes through the fixing seat 32 and extends out of the accommodating cavity 3a. The power terminal 4 can be used to connect an external circuit to power the light source 2. The power terminal 4 passes through the fixing seat 32 and extends out of the accommodating cavity 3a, and the fixing seat 32 can play the role of fixing the power terminal 4.
[0108] In one embodiment, please refer to Figure 7 and Figure 8 The power terminal 4 includes a positive terminal and a negative terminal, and the photocatalytic module 100 includes a spacer 5 disposed on the fixing seat 32, and the spacer 5 is located between the positive terminal and the negative terminal. On the one hand, the spacer 5 can isolate the positive terminal and the negative terminal to improve safety. On the other hand, the operator can also hold the spacer 5 to move the fixing seat 32 and other structures, for example, holding the spacer 5 to assemble the fixing seat 32 to the housing 31, which is easy to operate and reduces the impact on the positive terminal and the negative terminal.
[0109] In some embodiments, the isolation sheet 5 may be insulated, and the isolation sheet 5 may be made of insulating materials such as plastic.
[0110] In one embodiment, please refer to Fig. 9 and Fig.10 The light source 2 includes at least two light-emitting segments 21, at least one side of the light-emitting segment 21 along the first direction has a vent 3b, and at least two light-emitting segments 21 are spaced apart along the second direction, wherein the first direction and the second direction are perpendicular to each other. With such a design, the at least two light-emitting segments 21 can increase the light-emitting area, at least one side of the light-emitting segment 21 along the first direction has a vent 3b, and the vent 3b is substantially aligned with the light-emitting segment 21, so that the airflow from the vent 3b and the light beam can contact each other quickly.
[0111] In one embodiment, please refer to Fig.10 The light source 2 includes a connecting section 22, and two adjacent light-emitting sections 21 are connected by the connecting section 22, so that the light source 2 is substantially a planar curved structure. The light source 2 is substantially flat.
[0112] It is understandable that the connecting section 22 can also emit light.
[0113] For some examples, see Figure 7 and Fig.10 The light emitting section 21 is a linear structure extending in a straight line along the third direction, the connecting section 22 is an arc structure, and the first direction, the second direction and the third direction are perpendicular to each other. The housing 31 can be roughly flat, the first direction can be the thickness direction of the housing 31, the second direction can be the width direction of the housing 31, and the third direction can be the length direction of the housing 31.
[0114] In one embodiment, the catalyst is wrapped around the circumferential side surfaces of the light source 2. With such a design, the catalyst can receive the light beam emitted by the light source 2 as much as possible, thereby increasing the reaction area, improving the light energy utilization rate and the reaction efficiency.
[0115] In the related art, in some cases, the catalyst is a dispersed powder. The powdered catalyst is easily blown by the airflow, resulting in uneven distribution of the powder, poor contact with the airflow, and difficulty in separation from the airflow; in other cases, the catalyst is a coating applied to the surface of a dense structure such as glass. Glass is brittle and easily damaged, and dense structures such as glass have a small specific surface area and can hardly circulate airflow, which will hinder the flow of airflow and reduce the catalytic efficiency.
[0116] In one embodiment, please refer to Fig. 9The catalytic device 1 includes a mesh carrier 11, on which the catalyst is disposed, and the mesh carrier 11 is connected to the fixing device 3. The mesh carrier 11 is a structure having a plurality of pores. On the one hand, the mesh carrier 11 exhibits high physical and chemical stability against factors such as machine vibration, airflow and temperature changes during the operation of the clothes drying device. The catalyst is loaded on the mesh carrier 11, which has good stability, can reduce the risk of catalyst pulverization or shedding, maintain good photocatalytic activity, and prevent the catalyst from sticking to the clothes and contaminating the clothes. On the other hand, the pores of the mesh carrier 11 can not only increase the specific surface area, so that the surface and pores of the mesh carrier 11 can have catalysts, and the contact area between the catalyst and the fluid is large, but the pores of the mesh carrier 11 are also easy to breathe and transmit light, and the light beam can be reflected and refracted multiple times in the pores, extending the propagation path of the light beam in the mesh carrier 11 and the contact time between the light beam and the catalyst. In this way, catalytic reactions can occur on the outer surface of the mesh carrier 11 and the inner surface of the mesh carrier 11, with good photocatalytic activity, increasing the air volume and reaction area, increasing the number of active sites, and improving the catalytic efficiency. On the other hand, the mesh carrier 11 has a smaller mass than a dense structure and will not significantly increase the weight of the clothes drying equipment.
[0117] In one embodiment, the porosity of the mesh carrier 11 is 60%-98%. Exemplarily, the porosity of the mesh carrier 11 is 60%, 65%, 70%, 75%, 80%, 90%, 95% or 98%, etc. In the process of drying clothes, the air volume and wind speed flowing through the catalytic device 1 are both large. The larger the porosity of the mesh carrier 11, the larger the specific surface area, the better the air permeability and light transmission performance, which not only facilitates the air flow to flow smoothly through the mesh carrier 11 and contact more impurities of odor molecules, thereby catalytically decomposing and deodorizing and sterilizing, but also can improve the visualization effect, which is conducive to the user visually seeing the light beam emitted by the light source 2 and intuitively perceiving the working condition of the photocatalytic module 100.
[0118] The porosity of the mesh carrier 11 is the percentage of the total volume of all pores to the total volume of the mesh carrier 11 in a natural state. The natural state is a state in which the mesh carrier 11 is not deformed by external compression or pulling.
[0119] In some embodiments, at least one pore of the mesh carrier 11 is connected to the outer surface of the mesh carrier 11. The mesh carrier 11 has better air permeability and light permeability.
[0120] In some embodiments, multiple pores of the mesh carrier 11 can be connected to form a flow channel. The airflow and the light beam can propagate along the flow channel. In this way, during the catalysis of the airflow, the mass transfer resistance is low, thereby improving the catalytic efficiency.
[0121] In some embodiments, the mesh carrier 11 may be in the shape of a foam sponge. Thus, the mesh carrier 11 is substantially in the shape of a three-dimensional porous mesh structure.
[0122] The wavelength of the light source 2 is not limited, and the light source 2 may be in the ultraviolet wavelength range. For example, the wavelength of the light beam emitted by the light source 2 is less than 360 nm (nanometers).
[0123] The type of light source 2 is not limited, and the light source 2 includes but is not limited to an ultraviolet light source 2. The light source 2 may be a cold cathode ultraviolet light source 2. The cold cathode can reduce its own heating, thereby reducing the impact on the catalytic device 1 and the airflow.
[0124] In one embodiment, the mesh carrier 11 is made of metal. Metal materials are usually good conductors of electricity. On the one hand, metal materials are easy to process, bend and cut, and are easy to manufacture into a mesh structure; metal materials also have the characteristics of acid and alkali corrosion resistance and high temperature resistance, which can adapt to the high temperature and high humidity working environment of the drying equipment and the possible existence of detergent residues and other organic volatiles, and basically will not cause oxidation corrosion of the mesh carrier 11, and maintain stable physical properties. The mesh carrier 11 made of metal is not easy to damage, and the maintenance cost is relatively low. On the other hand, the factors affecting the efficiency of the photocatalytic reaction include light absorption efficiency, charge separation efficiency and surface reaction efficiency. The mesh carrier 11 has good light transmission performance, so it can improve the light absorption efficiency; in addition, the electrons and holes generated by the catalyst after being excited by light energy are easy to be recombined and deactivated in a very short time, and the metal material has good conductivity, which can accelerate the migration of electrons, so that the electrons can move quickly to the surface, avoid the recombination of electrons and holes, and improve the separation efficiency and transmission rate of photogenerated electrons-holes, thereby improving the charge separation efficiency and surface reaction efficiency, and improving the photocatalytic efficiency.
[0125] Exemplarily, in one embodiment, the metal material can be a flexible metal material, such as nickel and nickel alloy. The flexible metal material has good ductility and can be easily bent and shaped to form a mesh structure. The metal material can also be a hard metal material. The metal material includes but is not limited to at least one of nickel, nickel alloy, copper, copper alloy, aluminum, aluminum alloy, iron, iron alloy, tin, tin alloy, titanium and titanium alloy.
[0126] The manufacturing method of the mesh carrier 11 is not limited. For example, the mesh carrier 11 made of metal material can be prepared by existing processes such as slurry sintering method, powder sintering method or foam plastic electroplating method.
[0127] The type of catalyst is not limited, and the catalyst includes but is not limited to oxides, etc. For example, the catalyst includes but is not limited to zinc oxide and / or titanium dioxide, etc.
[0128] In some embodiments, the catalyst may be attached to the mesh support 11. For example, the catalyst may be attached to the inner surface (eg, the surface of the pores) and the outer surface of the mesh support 11 by in-situ growth.
[0129] In one embodiment, the equivalent diameter of the pores of the mesh carrier 11 is 0.1 mm to 10 mm. Exemplarily, the equivalent diameter of the pores of the mesh carrier 11 is 0.1 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 5.5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm, etc. The equivalent diameter of the pores is moderate, which is convenient for airflow to flow through the pores and is not prone to blockage, while taking into account the specific surface area and structural strength requirements of the mesh carrier 11.
[0130] The equivalent diameter of a pore is the ratio of four times the flow cross-sectional area of the pore to the perimeter. The flow cross-sectional area of a pore refers to the cross-sectional area taken by the streamline cluster perpendicular to the airflow.
[0131] In one embodiment, the through-porosity of the mesh carrier 11 is not less than 95%. Exemplarily, the through-porosity of the mesh carrier 11 is 95%, 97%, 98%, 99% or 100%, etc. The greater the through-porosity, the more pores with openings, the better the air permeability and light transmission performance, which is conducive to the circulation of airflow and the propagation of light beams, and increases the probability of light beams propagating to the part of the mesh carrier 11 far away from the light source 2, thereby improving the catalytic efficiency of the part far away from the light source 2.
[0132] The pores include open pores having openings and closed pores having no openings. The through-porosity is the percentage of the total volume of open pores having openings to the total volume of all pores.
[0133] In one embodiment, the volume density of the mesh carrier 11 is not greater than 0.8 g / cm 3 For example, the volume density of the mesh carrier 11 is 0.8 g / cm 3 , 0.7g / cm 3 , 0.6g / cm 3 , 0.5g / cm 3 , 0.4g / cm 3 , 0.3g / cm 3 Or 0.2g / cm 3 Etc. In this way, the mesh carrier 11 has a large specific surface area and good structural strength.
[0134] The bulk density is the ratio of the mass to the volume of the mesh carrier 11 , in other words, the mass per unit volume of the mesh carrier 11 .
[0135] In one embodiment, please refer to Figures 9 and 10The mesh carrier 11 surrounds the light source 2, and the thickness of the mesh carrier 11 in the radial direction is 2.0mm-5.0mm. The mesh carrier 11 is an annular structure surrounding the light source 2, and the thickness of the mesh carrier 11 in the radial direction can be 2.0mm, 2.5mm, 3mm, 3.5mm, 4.0mm or 5.0mm, etc. In this way, it is convenient for the airflow to flow through the mesh carrier 11 in the radial direction, and it is also convenient for the light beam of the light source 2 to penetrate the mesh carrier 11, and it is convenient for the light beam to propagate from the side close to the light source 2 to the side away from the light source 2.
[0136] It can be understood that the catalyst can be attached to the mesh carrier 11 and the shape of the catalytic device 1 can be defined by the mesh carrier 11 .
[0137] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments" or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.
[0138] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims
1. A photocatalytic module, characterized in that: include: Catalytic device, including catalyst; A light source, at least one side of the light source has the catalyst, and the light beam emitted by the light source is used to irradiate the catalyst; A fixing device, to which at least one of the light source and / or the catalytic device is connected.
2. The photocatalytic module according to claim 1, characterized in that: The fixing device is formed with a containing cavity and at least two vents, the vents are communicated with the containing cavity, and the light source and the catalytic device are both located in the containing cavity.
3. The photocatalytic module according to claim 2, characterized in that: The fixing device comprises: A housing, comprising the accommodating cavity with a placement opening and the vent; A fixing seat is arranged at the placement opening and connected to the shell, and both the light source and the catalytic device are connected to the fixing seat.
4. The photocatalytic module according to claim 3, characterized in that: The vents are formed on two opposite end surfaces of the housing.
5. The photocatalytic module according to claim 3, characterized in that: The fixing seat comprises a seat body and a mounting portion, wherein the seat body closes the placement opening, the mounting portion is connected to one side of the seat body and is located in the accommodating cavity, and the light source and the catalytic device are both connected to the mounting portion.
6. The photocatalytic module according to claim 5, characterized in that: The mounting portion is formed with a mounting hole, and the light source is inserted into the mounting hole.
7. The photocatalytic module according to claim 5, characterized in that: The catalytic device is wrapped around the light source and the mounting portion, and the catalytic device is interference fit with the mounting portion.
8. The photocatalytic module according to claim 7, characterized in that: The photocatalytic module includes a tie member, which fastens the catalytic device to the mounting portion.
9. The photocatalytic module according to claim 3, characterized in that: The photocatalytic module comprises an electrical terminal electrically connected to the light source, and the electrical terminal passes through the fixing seat and extends out of the accommodating cavity.
10. The photocatalytic module according to claim 2, characterized in that: The light source comprises at least two light-emitting segments, at least one side of the light-emitting segment along a first direction has the vent, and at least two of the light-emitting segments are spaced apart and distributed along a second direction, wherein the first direction and the second direction are perpendicular to each other.
11. The photocatalytic module according to any one of claims 1 to 10, characterized in that: The catalyst is wrapped around the side surfaces of the light source along the circumferential direction.
12. The photocatalytic module according to any one of claims 1 to 10, characterized in that: The catalytic device comprises a mesh carrier, the catalyst is arranged on the mesh carrier, and the mesh carrier is connected to the fixing device.
13. The photocatalytic module according to claim 12, characterized in that: The porosity of the mesh carrier is 60%-98%; and / or the mesh carrier is made of metal.
14. A clothes drying device, characterized in that: include: A clothes drying drum having a clothes drying chamber; The photocatalytic module according to any one of claims 1 to 13, wherein the catalytic device is used to catalyze the airflow from the clothes drying chamber.