Odor purification device for garbage processor

Abstract

A peculiar smell purification device for a garbage processor comprises a purification box with a hollow interior, and the purification box is provided with a gas inlet for inputting to-be-purified gas and a gas outlet for outputting purified gas; the photocatalytic decomposition net is loaded with a photocatalyst and is arranged in the purification box so as to decompose gas to be purified; the ultraviolet lamp is arranged in the purification box and is arranged to be capable of emitting ultraviolet light towards the photocatalytic decomposition net; the ozone concerted catalysis net is loaded with an ozone oxidation catalyst, is arranged in the purification box and at the downstream of the photocatalytic decomposition net along the flowing direction of the gas from the gas inlet to the gas outlet, and is used for adsorbing ozone in the gas and decomposing the gas to be purified by utilizing the ozone; and the ozone decomposition net loaded with an ozone decomposition catalyst is arranged in the purification box and at the downstream of the ozone concerted catalysis net and is used for decomposing ozone in the gas. Compared with the prior art, the air purifier can improve the user experience and guarantee the purification effect at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas purification, and in particular relates to an odor purification device for a garbage disposer. Background Art

[0002] Garbage disposers are a new type of kitchen appliance that helps us deal with kitchen waste, including leftovers, fruit peels, eggshells, and tea dregs, to prevent the waste from getting moldy and producing odors after being left for a long time. Currently, there are two main types of garbage disposers on the market: embedded and stand-alone.

[0003] Embedded, that is, crushing and direct discharge type, refers to the installation at the kitchen sink. The kitchen waste in the sink enters the grinding chamber of the garbage disposer with the water from the faucet, and is directly discharged along the sewer pipe after being crushed. This type of garbage disposer is easy to cause the drain pipe to be blocked, and it is noisy when working. In addition, if there is residual garbage in the grinding chamber, it is easy to emit a bad smell.

[0004] Independent type, also known as crushing and recycling type, works by using crushing components to squeeze garbage, and at the same time drying and dehydrating kitchen waste through a heating plate, and finally obtaining crushed dry garbage for easy storage. This type of garbage disposer will emit odor during the processing of kitchen waste, so an odor purification device needs to be installed.

[0005] At present, the odor treatment technologies used in garbage disposers mainly include activated carbon adsorption, thermal catalysis, etc. For example, the Chinese utility model patent "A stirring garbage disposer with drying and deodorization" with patent number 202120649678.8 and authorization announcement number CN215314655U uses carbon bags for deodorization; the Chinese invention patent application "Modular household kitchen waste disposer" with application number CN202010401441.8 and publication number CN111499425A discloses a kitchen waste disposer, which also removes odors through a deodorizing tube filled with adsorbent fillers such as activated carbon. However, adsorbent fillers such as activated carbon will be saturated and need to be replaced regularly, resulting in increased user costs and reduced user satisfaction. In addition, the discarded saturated activated carbon will also cause solid waste pollution, placing a greater burden on the ecological environment.

[0006] For example, the Chinese utility model patent "A Food Waste Disposer" with patent number 202021073924.1 and authorization announcement number CN212633817U eliminates odors by setting up a high-temperature catalytic chamber and an adsorption deodorization chamber. The high-temperature catalytic chamber uses an electric heating tube to generate a high temperature of 500°C. The exhaust gas passes through the electric heating tube to oxidize the exhaust gas at high temperature to eliminate the odor. Alumina is set in the adsorption deodorization chamber. According to the catalytic principle of alumina, when the exhaust gas enters the alumina after passing through the electric heating tube, it further adsorbs water vapor and large molecular odor gases in the exhaust gas when passing through the alumina. That is, the odor is eliminated by combining high-temperature catalysis with adsorption. In this process, on the one hand, the temperature of high-temperature catalysis must reach 500°C, the energy consumption is high, and there are safety risks; on the other hand, high temperature is not conducive to the adsorption of adsorption materials such as alumina, but may induce desorption; finally, high-temperature catalysis is used, and the exhaust temperature and humidity are high, which makes the room stuffy.

[0007] To overcome the above-mentioned defects, the Chinese invention patent application "Multi-stage catalytic oxidation treatment device for organic waste gas" with application number 201710725367.3 and publication number CN107281918A purifies the gas through a primary filtration module, a plasma catalytic module, and a photocatalytic module. However, the photocatalytic module will produce ozone, affecting the user experience. Utility Model Content

[0008] The technical problem to be solved by the utility model is to provide an odor purification device for a garbage disposer in view of the current status of the prior art, so as to improve the user experience while ensuring the purification effect.

[0009] The technical solution adopted by the utility model to solve the above technical problems is: an odor purification device for a garbage disposer, comprising:

[0010] A purification box with a hollow interior, which has a gas inlet for inputting the gas to be purified and a gas outlet for outputting the purified gas;

[0011] A photocatalytic decomposition net loaded with photocatalyst is arranged in the purification box to decompose the gas to be purified;

[0012] An ultraviolet lamp is disposed in the purification box and is arranged to emit ultraviolet light toward the photocatalytic decomposition net;

[0013] It is characterized by also including:

[0014] An ozone cooperative catalytic net loaded with an ozone oxidation catalyst is arranged in the purification box and downstream of the photocatalytic decomposition net along the flow direction of the gas from the gas inlet to the gas outlet, and is used to adsorb ozone in the gas and use ozone to decompose the gas to be purified;

[0015] The ozone decomposition net loaded with an ozone decomposition catalyst is arranged in the purification box and downstream of the ozone cooperative catalytic net, and is used for decomposing ozone in the gas.

[0016] The ultraviolet light emitted by the ultraviolet lamp can excite the photocatalyst to play a catalytic role to purify the gas to be purified (i.e., catalytically decompose the VOC molecules in the odor into carbon dioxide and water molecules), and at the same time release harmful byproduct ozone. The utility model sets an ozone cooperative catalytic network downstream of the photocatalytic decomposition network, which eliminates at least part of the ozone on the one hand, and can effectively utilize ozone on the other hand, so that the gas to be purified can be purified twice (i.e., catalytically decompose the VOC molecules in the odor into carbon dioxide and water molecules), thereby improving the purification effect. In addition, the ozone decomposition network downstream of the ozone cooperative catalytic network can remove residual ozone, so that the air finally released from the gas outlet of the purification box is safe and clean air.

[0017] The utility model is a room temperature purification method, which reduces energy consumption on the one hand, and the gas released from the gas outlet has a lower temperature and higher safety, and will not cause stuffiness in the room. At the same time, the utility model uses a catalyst, which is more environmentally friendly than the activated carbon adsorption method and the condensation method, does not require frequent replacement, and does not produce secondary pollution such as solid waste or solid-liquid.

[0018] Preferably, there are at least two photocatalytic decomposition nets, which are arranged at intervals along the flow direction of the gas from the gas inlet to the gas outlet, and the above-mentioned ultraviolet lamps are arranged between adjacent photocatalytic decomposition nets, and the ultraviolet lamps are arranged to emit ultraviolet light toward adjacent photocatalytic decomposition nets at the same time, so as to purify the gas to be purified more fully.

[0019] Preferably, the ultraviolet lamp is in a strip shape, and there are multiple ultraviolet lamps between adjacent photocatalytic decomposition nets, and they are arranged side by side.

[0020] Preferably, the pore density of the photocatalytic decomposition net is 10-40 PPI, preferably 25 PPI.

[0021] Preferably, the ozone oxidation catalyst loaded on the ozone cooperative catalytic net is in the form of columnar particles, and the diameter of the columnar particles is 2 to 6 mm, preferably 3 mm, and the length is about 10 mm.

[0022] Furthermore, the ozone decomposition network is a honeycomb ceramic coated with the ozone decomposition catalyst.

[0023] In the above schemes, preferably, a flow-equalizing net is further included, which is arranged in the purification box and upstream of the photocatalytic decomposition net, and the pore density of the mesh of the flow-equalizing net is 10-50PPI, preferably 30PPI.

[0024] The setting of the flow-equalizing net has the following benefits: First, the porous mesh flow-equalizing net plays a diversion role on the one hand, so that the odor gas is more evenly distributed in the downstream photocatalytic decomposition net, which is beneficial to improve the purification rate of the photocatalytic decomposition net for odor gas; second, the odor gas molecules constantly collide with the mesh branches of the flow-equalizing net, which greatly reduces the kinetic energy of the odor gas molecules and increases the residence time of the odor gas molecules after entering the photocatalytic decomposition net, that is, prolongs the reaction time, which can make the catalytic reaction more sufficient and the purification more thorough; third, when the kitchen waste is crushed and dried in the grinding chamber, fine dust particles with static electricity will be generated, which may enter the odor purification device with the airflow. The multi-layer branches of the flow-equalizing net collide with these dust particles and intercept them to prevent them from covering the surface of the rear-end catalyst and the ultraviolet lamp and affecting the purification effect.

[0025] Because the food and soup in the kitchen waste contain a lot of water, the water will affect the purification effect of each net, so preferably, a condensation plate is also included, which is arranged in the purification box and upstream of the flow-equalizing net. The condensation plate can intercept most of the water vapor in the odorous gas to ensure the purification effect of each net downstream.

[0026] Preferably, the gas inlet is located at the lower part of the purification box, the gas outlet is located at the upper part of the purification box, the flow equalizing net, the photocatalytic decomposition net, the ozone synergistic catalytic net, and the ozone decomposition net are placed horizontally in the purification box from bottom to top in sequence, and are located above the gas inlet and below the gas outlet, and the condensation plate is erected below the flow equalizing net.

[0027] Further, the purification box has a bottom wall, a side wall extending upward from the periphery of the bottom wall, and a top cover, the gas inlet is located at the bottom of the side wall of the purification box, and the gas outlet is located at the top cover of the purification box; the condensation plate is vertically arranged above the bottom wall of the purification box, and the vertical edge of the condensation plate is opposite to the gas inlet, and the bottom of the bottom wall or / and the side wall of the purification box is provided with a drain port. Condensed water can be discharged from the drain port.

[0028] Furthermore, the gas inlet is in a grid shape, and the gas outlet is in a grid shape. The grid-shaped gas inlet can perform primary filtration on the gas to be purified entering the purification box, and intercept particulate matter entering with the gas.

[0029] Preferably, the side wall of the purification box is provided with support blocks along the circumferential direction so that the net frame of the corresponding net can be placed thereon.

[0030] Compared with the prior art, the utility model has the following advantages: the ultraviolet light emitted by the ultraviolet lamp can excite the photocatalyst to play a catalytic role to purify the gas to be purified once (i.e., catalytically decompose the VOC molecules in the odor into carbon dioxide and water molecules), and at the same time release harmful byproduct ozone. The utility model sets an ozone cooperative catalytic network downstream of the photocatalytic decomposition network, which eliminates at least part of the ozone on the one hand, and can effectively utilize the ozone on the other hand, so that the gas to be purified can be purified twice (i.e., catalytically decompose the VOC molecules in the odor into carbon dioxide and water molecules), thereby improving the purification effect. Moreover, the ozone decomposition network downstream of the ozone cooperative catalytic network can remove the residual ozone, so that the air finally released from the gas outlet of the purification box is safe and clean air.

[0031] The utility model is a room temperature purification method, which reduces energy consumption on the one hand, and the gas released from the gas outlet has a lower temperature and higher safety, and will not cause stuffiness in the room. At the same time, the utility model uses a catalyst, which is more environmentally friendly than the activated carbon adsorption method and the condensation method, does not require frequent replacement, does not generate solid waste or secondary pollution such as solid liquid, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0033] Figure 2 A cross-sectional view of an embodiment of the utility model;

[0034] Figure 3 It is another cross-sectional view of an embodiment of the utility model. DETAILED DESCRIPTION

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] like Figures 1 to 3 As shown, a preferred embodiment of the utility model is a odor purification device for a garbage disposer, and the odor purification device includes a purification box 1, a photocatalytic decomposition net 2, an ultraviolet lamp 3, an ozone cooperative catalytic net 4, an ozone decomposition net 5, a flow equalizing net 6 and a condensation plate 7.

[0037] The purification box 1 is hollow inside and has a bottom wall 11, a side wall 12 extending upward from the periphery of the bottom wall 11, and a top cover 13. The bottom of the side wall 12 is provided with a grid-shaped gas inlet 1a for input of the gas to be purified, and the top cover 13 is provided with a grid-shaped gas outlet 1b for output of the purified gas.

[0038] There are multiple condensation plates 7, and the plates of each condensation plate 7 are arranged side by side above the bottom wall 11 of the purification box 1 with opposite plate surfaces spaced apart from each other. The vertical edge of each condensation plate 7 is opposite to the gas inlet 1a, and a drain outlet 100 is provided at the bottom of the side wall 12 of the purification box 1.

[0039] The above-mentioned flow-equalizing net 6 is horizontally placed in the purification box 1, above the condensation plate 7, and is also located above the gas inlet 1a. The flow-equalizing net 6 adopts alumina foam ceramics with a pore density of 10 to 50 PPI, and the outer side of the alumina foam ceramics is wrapped with a metal frame, and the outer periphery of the metal frame is wrapped with a sealing ring. In order to support the flow-equalizing net 6, the side wall 12 of the purification box 1 is provided with support blocks 121 at intervals along the circumferential direction, so that the mesh frame of the flow-equalizing net 6 can be placed thereon. In this embodiment, the space below the flow-equalizing net 6 in the purification box 1 can be used as a buffer chamber 60 for gas buffering. The condensation plate 7 is located in the buffer chamber to achieve condensation of water vapor in the gas and ensure the condensation effect.

[0040] There are two photocatalytic decomposition nets 2, the first one is supported on the top of the equalizing net 6, and the second one is located above the first one and is spaced apart from the first one. Each photocatalytic decomposition net 2 uses polyurethane foam coated with a photocatalyst, and the pore density of the polyurethane foam is 10-40 PPI. At the same time, in order to support the second photocatalytic decomposition net, the side wall 12 of the purification box 1 is provided with support blocks 121 at intervals along the circumferential direction, so that the net frame of the second photocatalytic decomposition net can be placed thereon.

[0041] The ultraviolet lamp 3 is disposed in the purification box 1 between two photocatalytic decomposition nets 2, and is arranged to simultaneously emit ultraviolet light toward adjacent photocatalytic decomposition nets 2 to stimulate the photocatalyst on the photocatalytic decomposition nets 2 to exert a catalytic effect. In this embodiment, the ultraviolet lamp 3 is in a strip shape, and there are three ultraviolet lamps 3 arranged side by side.

[0042] The ozone cooperative catalytic net 4 is loaded with an ozone oxidation catalyst and supported above the second photocatalytic decomposition net, and is used to adsorb ozone in the gas and use ozone to decompose the gas to be purified. In this embodiment, the ozone oxidation catalyst loaded on the ozone cooperative catalytic net 4 is in the form of columnar particles, and the diameter of the columnar particles is 2 to 6 mm and the length is about 10 mm.

[0043] The ozone decomposition net 5 is loaded with an ozone decomposition catalyst and supported above the ozone cooperative catalytic net 4 and below the gas outlet 1b to decompose ozone in the gas. In this embodiment, the ozone decomposition net 5 is a honeycomb ceramic coated with an ozone decomposition catalyst.

[0044] The workflow of this embodiment is as follows:

[0045] The kitchen waste is crushed and heated in the grinding chamber of the garbage disposer, emitting high-humidity odorous gas. The odorous gas is sucked from the grinding chamber by a fan and sent into the buffer chamber 60 of the purification box 1 through the gas inlet 1a. Since the buffer chamber 60 is provided with a condensation plate 7 and the porous and dense flow-equalizing net 6 is blocked, the kinetic energy of the gas molecules is reduced and the residence time is prolonged, so a large amount of water vapor in the odorous gas is intercepted. The relatively dry odorous gas enters the flow-equalizing net 6 and undergoes multiple diversions. On the one hand, the airflow at each location upstream of the photocatalytic decomposition net 2 is basically the same. On the other hand, repeated collisions reduce the kinetic energy of the odorous gas molecules, thereby enabling the odorous gas to fully contact and react with the photocatalytic decomposition net 2, thereby improving the purification efficiency. After the odorous gas molecules with smaller kinetic energy after diversion enter the photocatalytic decomposition net 2, the VOC molecules are catalytically oxidized into carbon dioxide and water under the action of the photocatalytic decomposition net 2 and the ultraviolet lamp 3. It should be noted that the ultraviolet light emitted by the ultraviolet lamp plays a role in photocatalytic decomposition of VOCs, but at the same time, the ultraviolet lamp will produce ozone. In order to avoid ozone pollution, this embodiment sets an ozone cooperative catalytic net 4 downstream of the photocatalytic decomposition net (the ozone cooperative catalytic net 4 can adsorb and utilize ozone to produce active oxygen species). After the ozone enters the ozone cooperative catalytic net 4 together with the odorous gas, it will be adsorbed and utilized to oxidize the residual VOC into carbon dioxide and water. Finally, the gas passes through the ozone decomposition net 5, the residual ozone is removed, and finally safe and clean air is discharged.

[0046] In the specification and claims of the present invention, terms indicating directions, such as "upper", "lower", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. An odor purification device for a garbage disposer, comprising: A purification box (1) having a hollow interior and having a gas inlet (1a) for inputting gas to be purified and a gas outlet (1b) for outputting purified gas; A photocatalytic decomposition net (2) loaded with a photocatalyst is arranged in the purification box (1) to decompose the gas to be purified; An ultraviolet lamp (3) is disposed in the purification box (1) and is arranged to emit ultraviolet light toward the photocatalytic decomposition net (2); Features Also included are: An ozone cooperative catalytic net (4) loaded with an ozone oxidation catalyst is arranged in the purification box (1) and downstream of the photocatalytic decomposition net (2) along the flow direction of the gas from the gas inlet (1a) to the gas outlet (1b), and is used to adsorb ozone in the gas and use ozone to decompose the gas to be purified; The ozone decomposition net (5) loaded with an ozone decomposition catalyst is arranged in the purification box (1) and downstream of the ozone cooperative catalytic net (4) and is used to decompose ozone in the gas.

2. The odor purification device according to claim 1, characterized in that: There are at least two photocatalytic decomposition nets (2), which are arranged at intervals along the flow direction of the gas from the gas inlet (1a) to the gas outlet (1b), and the above-mentioned ultraviolet lamps (3) are arranged between adjacent photocatalytic decomposition nets (2), and the ultraviolet lamps (3) are arranged to emit ultraviolet light towards adjacent photocatalytic decomposition nets (2) at the same time.

3. The odor purification device according to claim 2, characterized in that: The ultraviolet lamp (3) is in a strip shape, and there are a plurality of ultraviolet lamps (3) between adjacent photocatalytic decomposition nets (2), which are arranged side by side.

4. The odor purification device according to claim 2, characterized in that: The pore density of the mesh of the photocatalytic decomposition net (2) is 10 to 40 PPI.

5. The odor purification device according to claim 1, characterized in that: The ozone oxidation catalyst loaded on the ozone cooperative catalytic net (4) is in the form of columnar particles, and the diameter of the columnar particles is 2 to 6 mm and the length is 10 mm.

6. The odor purification device according to claim 1, characterized in that: The ozone decomposition net (5) is a honeycomb ceramic coated with the ozone decomposition catalyst.

7. The odor purification device according to any one of claims 1 to 6, characterized in that: It also includes a flow-balancing net (6) which is arranged in the purification box (1) and upstream of the photocatalytic decomposition net (2), and the mesh density of the flow-balancing net (6) is 10 to 50 PPI.

8. The odor purification device according to claim 7, characterized in that: It also includes a condensation plate (7) which is arranged inside the purification box (1) and upstream of the flow equalization network (6).

9. The odor purification device according to claim 8, characterized in that: The gas inlet (1a) is located at the lower part of the purification box (1), and the gas outlet (1b) is located at the upper part of the purification box (1). The flow-equalizing net (6), the photocatalytic decomposition net (2), the ozone cooperative catalytic net (4), and the ozone decomposition net (5) are arranged horizontally in the purification box (1) from bottom to top, and are located above the gas inlet (1a) and below the gas outlet (1b). The condensation plate (7) is arranged vertically below the flow-equalizing net (6).

10. The odor purification device according to claim 9, characterized in that: The purification box (1) comprises a bottom wall (11), a side wall (12) extending upward from the periphery of the bottom wall (11), and a top cover (13); the gas inlet (1a) is located at the bottom of the side wall (12) of the purification box (1), and the gas outlet (1b) is located at the top cover (13) of the purification box (1); the condensation plate (7) is vertically arranged above the bottom wall (11) of the purification box (1), and the vertical edge of the condensation plate (7) is opposite to the gas inlet (1a); the bottom of the bottom wall (11) or / and the side wall (12) of the purification box (1) is provided with a drain outlet (100).

11. The odor purification device according to claim 10, characterized in that: The gas inlet (1a) is in a grid shape, and the gas outlet (1b) is in a grid shape.

12. The odor purification device according to claim 10, characterized in that: The side wall (12) of the purification box (1) is provided with a support block (121) along the circumferential direction so that the net frame of the corresponding net can be placed thereon.

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