Deodorization device based on dielectric barrier discharge and intelligent pedestal pan

Abstract

The deodorization device based on dielectric barrier discharge comprises a dielectric barrier discharge module and a film heater, the dielectric barrier discharge module comprises a high-voltage electrode and a grounding electrode, catalytic materials are filled between the high-voltage electrode and the grounding electrode, and the film heater is used for heating the catalytic materials. The deodorization device is provided with the dielectric barrier discharge module, various active substances such as plasmas can be generated and used for bombarding the catalytic material and removing degradation products, passivators and the like accumulated on the surface of the catalytic material after long-term action, and meanwhile, the action of the plasmas can excite active sites of the catalytic material, so that the catalytic material can be effectively deodorized. And a film heater is arranged, so that under the action of heat, the catalytic activity of a catalytic material is higher, a product is safe, no by-product is generated, and the deodorization is faster, more efficient and more comprehensive.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent toilets, in particular to a deodorizing device based on dielectric barrier discharge and an intelligent toilet. Background Art

[0002] The deodorization modules currently used in smart toilets are generally porous adsorption materials such as activated carbon or diatomaceous earth. They are physical adsorption, non-selective, easily adsorb water vapor and become ineffective, and easily saturated, resulting in a low deodorization rate in one pass. Moreover, desorption after saturation will cause secondary pollution. There are also deodorization modules that use chemical reaction materials, but their reactants are limited, their service life is short, and they need to be replaced regularly. Utility Model Content

[0003] The utility model aims to solve at least one of the above technical problems in the related art to a certain extent. To this end, the utility model proposes a deodorizing device based on dielectric barrier discharge.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] The utility model also provides an intelligent toilet with the deodorizing device.

[0006] According to the first aspect of the utility model, a deodorizing device based on dielectric barrier discharge comprises a dielectric barrier discharge module and a thin film heater. The dielectric barrier discharge module comprises a high voltage electrode and a ground electrode. Catalytic material is filled between the high voltage electrode and the ground electrode. The thin film heater is used to heat the catalytic material.

[0007] The catalytic material comprises a catalytically active material and a carrier. The catalytically active material is loaded on the carrier, and the carrier is ceramic paper or honeycomb ceramic.

[0008] The deodorizing device based on dielectric barrier discharge according to the embodiment of the utility model has at least the following beneficial effects:

[0009] 1. The deodorizing device of the utility model is provided with a dielectric barrier discharge module (DBD), which can generate a variety of active substances, such as plasma, which is used to bombard the catalytic material and remove the degradation products and passivation products accumulated on the surface of the catalytic material after long-term action. At the same time, the action of plasma can also stimulate the active sites of the catalytic material, so that the deodorizing degradation reaction is faster and more effective. In addition, a thin film heater is provided. Under the action of heat, the catalytic activity of the catalytic material is higher, the product is safe, there is no by-product, and the deodorization is faster, more efficient and more comprehensive.

[0010] 2. The utility model can select the deodorization gear according to the odor concentration. The first gear deodorization is the conventional deodorization mode. At this time, you only need to start the fan to adsorb the odor molecules in the catalytic material and degrade them by the catalytic material. The first gear deodorization is completed by the catalytic material alone. The second gear deodorization is to start the fan + DBD discharge at the same time. At this time, plasma, O3 and catalytic materials work together to adsorb and degrade odor molecules to achieve the deodorization function. The third gear deodorization is to start the fan + DBD discharge + film heating at the same time. At this time, high-temperature catalysis, plasma, O3, and catalytic materials work together to rapidly heat up the catalytic material. Under the action of heat, the activity of the catalytic material is better activated, and the odor molecules can be degraded faster and more completely. The active substances produced by DBD are also more active with the assistance of heat, achieving a high-intensity deodorization function. The deodorization device is intelligent and convenient, which enhances the user's pleasure when using it.

[0011] According to some embodiments of the utility model, the dielectric barrier discharge module is a cylindrical structure, the grounding electrode is a metal tube or a metal mesh tube, the high-voltage electrode is a metal wire or a metal rod, the high-voltage electrode is arranged at the central axis inside the grounding electrode, and the thin film heater is attached to the outer surface of the grounding electrode.

[0012] According to some embodiments of the utility model, it also includes an air duct pipe, the pipe wall of the air duct pipe is made of flame-retardant and high-temperature resistant material, the air duct pipe has an air inlet and an air outlet, the dielectric barrier discharge module is installed in the air duct pipe and is located between the air inlet and the air outlet, the cylinder wall of the grounding electrode is arranged circumferentially along the inner wall of the air duct pipe, and the thin film heater is sandwiched between the grounding electrode and the inner wall of the air duct pipe.

[0013] According to some embodiments of the present invention, the deodorizing device further comprises a fan for introducing gas into the dielectric barrier discharge module and a gas detector for detecting the concentration of environmental odor.

[0014] According to some embodiments of the present invention, the fan is located at the air outlet, and the gas detector is located at the air inlet.

[0015] According to some embodiments of the utility model, a negative high-voltage pulse power supply for supplying power to the dielectric barrier discharge module is also included.

[0016] According to some embodiments of the present invention, the grounding electrode is one of stainless steel, copper-tungsten alloy, tungsten-molybdenum alloy or iron-chromium-aluminum alloy.

[0017] According to some embodiments of the present invention, the high voltage electrode is a tungsten wire.

[0018] According to some embodiments of the present invention, a controller is further included, and the controller is electrically connected to the gas detector, the fan, the dielectric barrier discharge module and the thin film heater respectively.

[0019] The intelligent toilet according to the second aspect of the embodiment of the utility model includes the deodorizing device.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a schematic diagram of the overall structure of the deodorizing device of the utility model;

[0023] Figure 2 It is a cross-sectional view of the dielectric barrier discharge module (DBD) of the utility model;

[0024] Figure 3 It is the electric control principle diagram of the utility model;

[0025] Figure 4 It is the electric control operation logic diagram of the utility model.

[0026] Reference numerals: high voltage electrode 110 , ground electrode 120 , thin film heater 200 , catalytic material 300 , air duct 400 , fan 500 , gas detector 600 . DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] Reference Figure 1-2 A deodorizing device based on dielectric barrier discharge includes a dielectric barrier discharge module and a thin film heater 200. The dielectric barrier discharge module includes a high voltage electrode 110 and a ground electrode 120. Catalytic material 300 is filled between the high voltage electrode 110 and the ground electrode 120. The thin film heater 200 is used to heat the catalytic material 300. The catalytic material 300 includes a catalytically active material and a carrier. The catalytically active material is loaded on the carrier, and the carrier is ceramic paper or honeycomb ceramic.

[0029] The deodorizing device of the utility model is provided with a dielectric barrier discharge module (DBD), which can generate a variety of active substances, such as plasma, for bombarding the catalytic material 300, removing the degradation products and passivation products accumulated on the surface of the catalytic material 300 after long-term action, and at the same time, the action of plasma can also stimulate the active sites of the catalytic material 300, so that the deodorizing degradation reaction is carried out faster and more effectively. In addition, a thin film heater 200 is provided, and under the action of heat, the catalytic activity of the catalytic material 300 is higher, the product is safe, there is no by-product, and the deodorizing is faster, more efficient, and more comprehensive.

[0030] The utility model can select the deodorization gear according to the odor concentration. The first gear deodorization is a conventional deodorization mode. At this time, it is only necessary to start the fan 500 to adsorb the odor molecules in the catalytic material 300 and degrade them by the catalytic material 300. The first gear deodorization is completed by the catalytic material 300 alone. The second gear deodorization is to start the fan 500 + DBD discharge at the same time. At this time, plasma, O3 and catalytic material 300 work together to adsorb and degrade odor molecules to achieve the deodorization function. The third gear deodorization is to start the fan 500 + DBD discharge + film heating at the same time. At this time, high-temperature catalysis, plasma, O3, and catalytic material 300 work together to rapidly heat up the catalytic material 300. Under the action of heat, the activity of the catalytic material 300 is better activated, and the odor molecules can be degraded faster and more completely. The active substances generated by DBD are also more active with the assistance of heat, and a high-intensity deodorization function is achieved. The deodorization device is intelligent and convenient, and enhances the user's pleasure when using it.

[0031] In some embodiments of the utility model, the dielectric barrier discharge module is a cylindrical structure, the grounding electrode 120 is a metal cylinder or a metal mesh cylinder, the high-voltage electrode 110 is a metal wire or a metal rod, the high-voltage electrode 110 is arranged at the central axis inside the grounding electrode 120, and the thin film heater 200 is attached to the outer surface of the grounding electrode 120. The gas enters from one end of the dielectric barrier discharge module, flows through the catalytic material 300, and then flows out from the other end of the cylinder. The thin film heater 200 is a commercially available product, made of a flexible thin film material, and can be directly attached to the outer surface of the metal cylinder or the metal mesh cylinder with a thermally conductive adhesive. The cylindrical discharge structure has a simple structure, uniform discharge, a large effective reaction area, and a long contact time, which ensures that the degradation reaction is complete.

[0032] In some embodiments of the utility model, an air duct 400 is also included, the wall of the air duct 400 is made of flame-retardant and high-temperature resistant material, the air duct 400 has an air inlet and an air outlet, the dielectric barrier discharge module is installed in the air duct 400 and is located between the air inlet and the air outlet, the cylinder wall of the grounding electrode 120 is arranged along the inner wall of the air duct 400, and the film heater 200 is sandwiched between the grounding electrode 120 and the inner wall of the air duct 400. The air duct 400 is used to guide the air, so that the airflow containing odor molecules passes through the dielectric barrier discharge module and finally discharged from the air duct 400.

[0033] In some embodiments of the present invention, the deodorizing device further includes a fan 500 for introducing gas into the dielectric barrier discharge module and a gas detector 600 for detecting the concentration of ambient odor.

[0034] In some embodiments of the present invention, the fan 500 is located at the air outlet, and the gas detector 600 is located at the air inlet. The fan 500 forms a negative pressure in the air duct 400, sucking in odor molecules, and allowing the odor molecules to pass through the dielectric barrier discharge module.

[0035] In some embodiments of the utility model, a negative high-voltage pulse power supply for powering the dielectric barrier discharge module is also included. The negative high-voltage pulse power supply provides negative high voltage, which is adjustable from 0 to 20KV and has a duty cycle of <40%. By setting the duty cycle, the discharge duration is controlled, thereby controlling the concentration of the active substances produced. Pulse discharge can use higher instantaneous high voltage to stimulate more and more efficient active substances, while controlling the concentration of O3 within a reasonable range. Compared with positive polarity high voltage, negative polarity high voltage is more conducive to the generation of negative ions and negative oxygen ions, and has the advantages of stable energy, easy use, and low cost.

[0036] In some embodiments of the present invention, the grounding electrode 120 is made of one of stainless steel, copper-tungsten alloy, tungsten-molybdenum alloy or iron-chromium-aluminum alloy.

[0037] In some embodiments of the present invention, the high voltage electrode 110 is a tungsten wire.

[0038] In some embodiments of the present invention, referring to Figure 3 , and further includes a controller, which is electrically connected to the gas detector 600, the fan 500, the dielectric barrier discharge module and the film heater 200. The controller can realize full automation of deodorization.

[0039] The following provides an example of a deodorization method based on the above deodorization device, referring to Figure 4 :

[0040] The odor detector monitors the odor concentration at the air inlet of the air duct 400 (inside the toilet cavity) in real time;

[0041] 1. When the odor concentration is less than 5ppm (not in use), set the time interval and regularly run the first gear deodorization. The controller starts the fan 500 to allow the air with odor molecules to pass through the dielectric barrier discharge module, be adsorbed in the catalytic material 300, and be degraded by the catalytic material 300;

[0042] 2. When the odor concentration is 5≤X≤10ppm (urine), the second gear deodorization is operated, the controller starts the fan 500 and the dielectric barrier discharge module, and the air with odor molecules passes through the dielectric barrier discharge module. At the same time, the dielectric barrier discharge module discharges to generate plasma and active substances such as O3. At this time, the active substances and the catalytic material 300 work together to adsorb and degrade the odor molecules to achieve the deodorization function;

[0043] 3. When the odor concentration is greater than 10ppm (feces), the 3rd gear deodorization is operated, and the controller starts the fan 500, the dielectric barrier discharge module and the thin film heater 200. The air with odor molecules passes through the dielectric barrier discharge module, and the dielectric barrier discharge module discharges at the same time to generate plasma and active substances such as O3. At the same time, the thin film heater 200 heats the catalytic material 300 to quickly heat up. Under the action of heat, the activity of the catalytic material 300 is better activated, and the odor molecules can be degraded faster and more completely. The active substances generated by the dielectric barrier discharge module are also more active with the assistance of heat.

[0044] An intelligent toilet comprises the above-mentioned deodorizing device.

[0045] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A deodorizing device based on dielectric barrier discharge, characterized in that: The invention comprises a dielectric barrier discharge module and a thin film heater (200), wherein the dielectric barrier discharge module comprises a high voltage electrode (110) and a ground electrode (120), a catalytic material (300) is filled between the high voltage electrode (110) and the ground electrode (120), and the thin film heater (200) is used for heating the catalytic material (300).

2. The deodorizing device according to claim 1, characterized in that: The dielectric barrier discharge module is a cylindrical structure, the grounding electrode (120) is a metal cylinder or a metal mesh cylinder, the high-voltage electrode (110) is a metal wire or a metal rod, the high-voltage electrode (110) is arranged at the central axis inside the grounding electrode (120), and the thin film heater (200) is attached to the outer surface of the grounding electrode (120).

3. The deodorizing device according to claim 2, characterized in that: It also includes an air duct pipe (400), the pipe wall of the air duct pipe (400) is made of flame-retardant and high-temperature resistant material, the air duct pipe (400) has an air inlet and an air outlet, the dielectric barrier discharge module is installed in the air duct pipe (400) and is located between the air inlet and the air outlet, the cylinder wall of the grounding electrode (120) is arranged circumferentially along the inner wall of the air duct pipe (400), and the thin film heater (200) is sandwiched between the grounding electrode (120) and the inner wall of the air duct pipe (400).

4. The deodorizing device according to claim 3, characterized in that: The deodorizing device further comprises a fan (500) for introducing gas into the dielectric barrier discharge module and a gas detector (600) for detecting the concentration of ambient odor.

5. The deodorizing device according to claim 4, characterized in that: The fan (500) is located at the air outlet, and the gas detector (600) is located at the air inlet.

6. The deodorizing device according to claim 1, characterized in that: It also includes a negative high-voltage pulse power supply for powering the dielectric barrier discharge module.

7. The deodorizing device according to claim 1, characterized in that: The grounding electrode (120) is made of one of stainless steel, copper-tungsten alloy, tungsten-molybdenum alloy or iron-chromium-aluminum alloy.

8. The deodorizing device according to claim 1, characterized in that: The high voltage electrode (110) is a tungsten wire.

9. The deodorizing device according to claim 4, characterized in that: It also includes a controller, which is electrically connected to the gas detector (600), the fan (500), the dielectric barrier discharge module and the thin film heater (200) respectively.

10. An intelligent toilet, characterized in that: Comprising a deodorizing device as described in any one of claims 1 to 9.

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