CN216132061U - Self-cleaning device for dust collecting plate and purifier - Google Patents

Abstract

The application relates to a dust collecting plate self-cleaning device and a purifier, wherein the device comprises an ultrasonic transduction module and an auxiliary vibration module; the ultrasonic energy conversion module is fixed on the dust collecting plate and used for generating mechanical vibration to drive the dust collecting plate to vibrate; the auxiliary vibration module is connected with the dust collecting plate and used for assisting the vibration of the dust collecting plate. When needs are cleaned the dust collecting plate, steerable supersound transduction module produces mechanical vibration to combine supplementary dust collecting plate vibration of supplementary vibration module, realize the dust and shake off the effect, avoided the not good problem of cleaning performance because of the interval of dust collecting plate reduces and leads to, effectively improved the cleaning efficiency to the dust collecting plate.

Description

Self-cleaning device for dust collecting plate and purifier

Technical Field

The application relates to the technical field of electrical equipment, in particular to a dust collecting plate self-cleaning device and a purifier.

Background

The plasma air purifier has the advantages of high efficiency, low consumption, long life cycle and the like, and has great development potential and market. The electric purifying module of the plasma air purifier mainly comprises a charged area and a deflection area, wherein pollutant particles are collected by dust collecting plates with a certain distance between the dust collecting plates in the deflection area. In terms of working principle, one of the main means to improve the filtration efficiency is to reduce the distance between the dust collecting plates so that the particles entering the deflection zone are more easily concentrated on the dust collecting plates. However, the decreased distance results in the dust collecting plate being difficult to clean, resulting in poor cleaning effect. How to improve the cleaning efficiency of the dust collecting plate is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

Accordingly, it is desirable to provide a dust collecting plate self-cleaning apparatus and a cleaner that can improve cleaning efficiency of a dust collecting plate, in order to solve the problem that cleaning efficiency is not good due to a reduction in the pitch of the dust collecting plate.

A self-cleaning device of a dust collecting plate comprises an ultrasonic transduction module and an auxiliary vibration module; the ultrasonic energy conversion module is fixed on the dust collecting plate and used for generating mechanical vibration to drive the dust collecting plate to vibrate; the auxiliary vibration module is connected with the dust collecting plate and used for assisting the vibration of the dust collecting plate.

In one embodiment, the ultrasonic transduction module is a piezoelectric ultrasonic transduction element.

In one embodiment, the self-cleaning apparatus further comprises an ac power source and a control device, wherein the ac power source is connected with the ultrasonic transducer module and the control device.

In one embodiment, the control device is a controller which controls the ac power supply to output an ac excitation signal to the ultrasonic transducer module when detecting that the dust accumulation of the dust collecting plate exceeds a preset accumulation amount.

In one embodiment, the control device is a controller which controls the ac power supply to output an ac excitation signal to the ultrasonic transducer module when detecting that the working time of the dust collecting plate exceeds a preset time threshold.

In one embodiment, the number of the auxiliary vibration modules is more than two, and the two sides of the dust collecting plate are connected with the auxiliary vibration modules.

In one embodiment, the auxiliary vibration module includes a vibration module and an elastic element, the vibration module is provided with a dust collecting plate fixing groove for fixing the dust collecting plate, and the elastic element is arranged between the vibration module and the fixing member.

In one embodiment, the resilient element is a spring.

In one embodiment, the spring is sleeved on the fixing bolt of the fixing piece.

A purifier comprises a dust collecting plate and the dust collecting plate self-cleaning device.

Above-mentioned collecting plate is from cleaning device and clarifier, when needs are cleaned the collecting plate, steerable supersound transduction module produces mechanical vibration to combine supplementary collecting plate vibration of supplementary vibration module, realize the dust and shake off the effect, avoided because of the not good problem of cleaning performance that the interval of collecting plate dwindled and lead to, effectively improved the cleaning efficiency to the collecting plate.

Drawings

FIG. 1 is a schematic view of an embodiment of a self-cleaning apparatus for a dust plate;

fig. 2 is a schematic structural diagram of an auxiliary vibration module in an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that spatial relationship terms, such as "under", "below", "beneath", "below", "over", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "under" can encompass both an orientation of above and below. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. The "connection" in the following embodiments is understood as "electrical connection", "communication connection", or the like if the connected circuits, modules, units, or the like have electrical signals or data transmission therebetween.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, the terminology used in this specification includes any and all combinations of the associated listed items.

In one embodiment, a self-cleaning apparatus for a collection plate is provided, the collection plate serving as a dust collection device, and particularly, a collection plate for an electrical device such as a purifier. As shown in FIG. 1, the self-cleaning device of the dust collecting plate comprises an ultrasonic transducer module 1 and an auxiliary vibration module; the ultrasonic energy conversion module 1 is fixed on the dust collecting plate 2 and used for generating mechanical vibration to drive the dust collecting plate 2 to vibrate; the auxiliary vibration module is connected with the dust collecting plate 2 and is used for assisting the vibration of the dust collecting plate 2.

The ultrasonic transducer module 1 is a device for converting electric energy into mechanical energy of high-frequency oscillation. The ultrasonic energy conversion module 1 can be arranged on the dust collecting plate 2 close to the fixing piece, and is convenient to be connected with an external power supply. The specific number of the auxiliary vibration modules is not exclusive, and the auxiliary vibration modules may be disposed at both ends of the dust collection plate 2, or at only one end of the dust collection plate 2, for example, at a in fig. 1. The auxiliary vibration module can select a device with elastic performance, and the auxiliary vibration module is connected with the dust collecting plate 2 and the fixing piece to support the dust collecting plate 2 and assist in vibration. The fixing member may be a fixing frame or a housing, and the auxiliary vibration module may be fixed to the housing of the purifier and connected to the dust collecting plate 2, for example, a dust collecting plate in the purifier. The dust collecting plate 2 may be a metal dust collecting plate, which functions to collect positively charged contaminant particles and to conduct away the charge of the contaminant particles. When needs are cleaned dust collecting plate 2, can be after dust collecting plate 2 stop work, perhaps be at dust collecting plate 2 during operation, utilize external power source input alternating current signal to supersound transducer module 1, control supersound transducer module 1 and produce mechanical vibration, combine supplementary vibration module to assist dust collecting plate 2 vibration, realize the dust and shake off the effect, avoided the not good problem of cleaning effect because of the interval of dust collecting plate 2 reduces and lead to.

Above-mentioned collecting plate is from cleaning device, when needs are cleaned collecting plate 2, steerable supersound transduction module 1 produces mechanical vibration to combine supplementary collecting plate 2 vibrations of supplementary vibration module, realize the dust and shake off the effect, avoided because of the not good problem of cleaning performance that the interval of collecting plate 2 dwindled and lead to, effectively improved the cleaning efficiency to collecting plate.

The specific type of the ultrasonic transducer module 1 is not exclusive, and in one embodiment, the ultrasonic transducer module 1 is a piezoelectric ultrasonic transducer element, which has the function of realizing an inverse piezoelectric effect to generate high-frequency mechanical vibration under the excitation of a high-frequency current signal. It can be understood that the specific frequency of the high-frequency current signal switched in by the piezoelectric ultrasonic transducer element is not fixed, and can be selected according to actual requirements.

In one embodiment, the self-cleaning apparatus further comprises an ac power source and a control device, the ac power source is connected to the ultrasonic transducer module 1 and the control device. The alternating current power supply can specifically adopt a high-frequency alternating current power supply, and the control device can control the alternating current power supply to output a high-frequency current signal to the ultrasonic transduction module 1, so that the ultrasonic transduction module 1 generates high-frequency mechanical vibration under the excitation of the high-frequency current signal.

Further, in one embodiment, the control device is a controller for controlling the ac power supply to output an ac excitation signal to the ultrasonic transducer module 1 when detecting that the dust accumulation on the dust collecting plate 2 exceeds a preset accumulation amount. Wherein, the controller can adopt an independent control chip, and also can adopt an original control mainboard of the electrical equipment where the dust collecting plate 2 is, for example, adopt the original control mainboard of the purifier. The specific type of the controller is not unique, and may be a CPU (Central Processing Unit), an MCU (Micro Control Unit, chinese is a Micro Control Unit), an FPGA (Field Programmable Gate Array), or the like.

Taking the dust collecting plate 2 as an example of the application of the purifier, the dust collecting plate 2 is a part of the purifier, and when a certain amount of dust is accumulated on the dust collecting plate 2, the performance of the purifier is degraded. The controller can analyze the dust accumulation amount on the dust collecting plate 2 by monitoring the running state of the whole machine, and determine whether the dust accumulation of the dust collecting plate 2 exceeds a preset accumulation amount according to the attenuation degree of the performance of the whole machine, so as to determine whether to start cleaning. Whether to start the cleaning operation of the dust collecting plate 2 is determined according to the actual dust accumulation amount of the dust collecting plate 2, so that the normal use of the dust collecting plate 2 is prevented from being influenced by excessive dust accumulation.

In another embodiment, the control device is a controller that controls the ac power supply to output an ac excitation signal to the ultrasonic transducer module 1 when detecting that the working time of the dust collecting plate 2 exceeds a preset time threshold. Also taking the dust collecting plate 2 applied to the purifier as an example, the controller can count time when controlling the dust collecting plate 2 to start working, and automatically start one cleaning operation on the dust collecting plate 2 when the continuous working time of the dust collecting plate 2 reaches a preset time threshold, and the control is simple, convenient and quick. It will be appreciated that if the dust collection plate 2 is again operated after the cleaning operation is completed, the controller restarts the timer for the next automatic cleaning operation.

The above provides two ways of starting the cleaning operation, and the user can determine the specific starting way according to the actual requirement. It is understood that the manner of starting the cleaning operation is not limited to the above two manners, for example, the user may also input an instruction to the controller through the interactive device to manually control the operation of the ultrasonic transducer module 1 to start the cleaning operation.

In one embodiment, the number of the auxiliary vibration modules is more than two, and the auxiliary vibration modules are connected to both sides of the dust collecting plate 2. Specifically, both sides of the dust collecting plate 2 can be connected with the fixing member through the auxiliary vibration modules, and when the ultrasonic transduction module 1 generates mechanical vibration, the auxiliary vibration modules on both sides of the dust collecting plate 2 are used for assisting the vibration of the dust collecting plate 2, so that the vibration effect of the dust collecting plate 2 is further improved.

The specific structure of the auxiliary vibration module is not exclusive, and in one embodiment, as shown in fig. 2, the auxiliary vibration module includes a vibration module 3 and an elastic element 4, the vibration module 3 is provided with a dust collecting plate fixing groove 5 for fixing the dust collecting plate 2, the dust collecting plate 2 can be arranged in the dust collecting plate fixing groove 5 for clamping or bonding, and the elastic element 4 is arranged between the vibration module 3 and the fixing member. It will be appreciated that the number of spring elements 4 is not exclusive, and in this embodiment, two spring elements 4 are provided on opposite sides of the vibration module 3, and opposite sides of the vibration module 3 are connected to the mount via two spring elements 4.

Wherein, the elastic element 4 can be selected from a spring. Further, the spring is sleeved on the fixing bolt of the fixing piece. Also taking the dust collecting plate 2 as an example of being applied to a purifier, the fixing member is a housing of the purifier, a fixing bolt can be disposed on the housing, a spring is sleeved on the fixing bolt on the housing, one end of the spring is in contact with the housing or the fixing bolt, and the other end of the spring is in contact with the vibration module 3.

In one embodiment, there is also provided a purifier comprising a collection plate and the above-described collection plate self-cleaning apparatus. The purifier may be a plasma air purifier with a filament plate structure, and the number of the dust collecting plates may be one or more. When the number of the dust collecting plates is plural, one dust collecting plate may be provided for each dust collecting plate.

Specifically, as shown in fig. 1, the dust collecting plate self-cleaning apparatus includes an ultrasonic transducer module 1 and an auxiliary vibration module; the ultrasonic energy conversion module 1 is fixed on the dust collecting plate 2 and used for generating mechanical vibration to drive the dust collecting plate 2 to vibrate; the auxiliary vibration module is connected with the dust collecting plate 2 and is used for assisting the vibration of the dust collecting plate 2. The auxiliary vibration modules may be disposed at both ends of the dust collecting plate 2, or disposed at only one end of the dust collecting plate 2, for example, at a in fig. 1. The dust collecting plate 2 may be a metal dust collecting plate, which functions to collect positively charged contaminant particles and to conduct away the charge of the contaminant particles. When needs are cleaned dust collecting plate 2, utilize external power source input alternating current signal to supersound transduction module 1, control supersound transduction module 1 and produce mechanical vibration, combine supplementary vibration module to assist dust collecting plate 2 vibration, realize the dust and shake off the effect, avoided the not good problem of cleaning effect because of the interval of dust collecting plate 2 reduces and lead to. The specific type of the ultrasonic transducer module 1 is not exclusive, and in one embodiment, the ultrasonic transducer module 1 is a piezoelectric ultrasonic transducer element, which has the function of realizing an inverse piezoelectric effect to generate high-frequency mechanical vibration under the excitation of a high-frequency current signal.

Furthermore, the self-cleaning device of the dust collecting plate also comprises an alternating current power supply and a control device, wherein the alternating current power supply is connected with the ultrasonic energy conversion module 1 and the control device. The alternating current power supply can specifically adopt a high-frequency alternating current power supply, and the control device can control the alternating current power supply to output a high-frequency current signal to the ultrasonic transduction module 1, so that the ultrasonic transduction module 1 generates high-frequency mechanical vibration under the excitation of the high-frequency current signal.

Wherein, the control device is a controller which controls the AC power supply to output an AC excitation signal to the ultrasonic transducer module 1 when detecting that the dust accumulation of the dust collecting plate 2 exceeds a preset accumulation amount. Or, the control device is a controller which controls the alternating current power supply to output an alternating current excitation signal to the ultrasonic transducer module 1 when detecting that the working time of the dust collecting plate 2 exceeds a preset time threshold. The specific type of controller is not exclusive and can be a CPU, MCU, FPGA, etc.

The number of the auxiliary vibration modules in the dust collecting plate self-cleaning device can be one or more than two. In this embodiment, the number of the auxiliary vibration modules is two or more, and the two sides of the dust collecting plate 2 are connected with the auxiliary vibration modules. Specifically, both sides of the dust collecting plate 2 can be connected with the fixing member through the auxiliary vibration modules, and when the ultrasonic transduction module 1 generates mechanical vibration, the auxiliary vibration modules on both sides of the dust collecting plate 2 are used for assisting the vibration of the dust collecting plate 2, so that the vibration effect of the dust collecting plate 2 is further improved.

As shown in fig. 2, the auxiliary vibration module includes a vibration module 3 and an elastic element 4, the vibration module 3 is provided with a dust collecting plate fixing groove 5 for fixing the dust collecting plate 2, the dust collecting plate 2 can be arranged in the dust collecting plate fixing groove 5 for clamping or bonding, and the elastic element 4 is arranged between the vibration module 3 and the fixing member. It will be appreciated that the number of spring elements 4 is not exclusive, and in this embodiment, two spring elements 4 are provided on opposite sides of the vibration module 3, and opposite sides of the vibration module 3 are connected to the mount via two spring elements 4. The elastic element 4 may be a spring in particular. Further, the spring is sleeved on the fixing bolt of the fixing piece. The fixing part is a shell of the purifier, a fixing bolt can be arranged on the shell, the spring is sleeved on the fixing bolt on the shell, one end of the spring is in contact with the shell or the fixing bolt, and the other end of the spring is in contact with the vibration module 3.

Above-mentioned clarifier, when needs are cleaned dust collecting plate 2, steerable supersound transduction module 1 produces mechanical vibration, and combine supplementary dust collecting plate 2 vibration of supplementary vibration module, realize the dust and shake off the effect, avoided the not good problem of cleaning performance because of the interval of dust collecting plate 2 reduces and leads to, effectively improved the cleaning efficiency to dust collecting plate, the difficult cleaning problem of dust collecting plate 2 has been solved, the corrosion damage problem of dust long-time adhesion to dust collecting plate 2 and leading to has been avoided.

To facilitate a better understanding of the above-described self-cleaning device and cleaner, a detailed explanation is provided below with reference to specific embodiments.

From the prior products, the electric purification module of the plasma air purifier mainly comprises a charged zone and a deflection zone, wherein the deflection zone is internally provided with dust collecting plates which are arranged at a certain distance from each other to collect pollutant particles. In terms of working principle, one of the main means to improve the filtration efficiency is to reduce the distance between the dust collecting plates so that the particles entering the deflection zone are more easily concentrated on the dust collecting plates. However, the reduced spacing results in the dust collecting plate being difficult to clean, severely affecting the efficiency of the purifier, and even causing damage to the dust collecting plate.

Based on this, this application provides an electricity purifies dust collecting plate self-cleaning device based on piezoelectric effect, and the device collocation appropriate power can realize the automatic cleaning of electricity purification dust collecting plate, can set up the self-cleaning procedure according to the washing demand of reality. The problem of difficult cleaning of a dust collecting plate in the plasma air purifier is solved by utilizing the electro-mechanical coupling characteristic of the piezoelectric material, and the problems of reduced dust collecting efficiency and corrosion damage of the dust collecting plate are avoided.

In particular, fig. 1 shows the whole structure of the self-cleaning device of the dust collecting plate, wherein 1 is an ultrasonic transducer module, in particular a piezoelectric ultrasonic transducer element. The piezoelectric ultrasonic transduction element mainly comprises a PZT piezoelectric functional ceramic sheet (chemical formula: PbZr0.5Ti0.5O3, name: lead zirconate titanate), and has the function of realizing the inverse piezoelectric effect and generating high-frequency mechanical vibration under the excitation of a high-frequency current signal. The dust collecting plate 2 is a grounded dust collecting plate in the plasma air purifier with a filament plate structure, in particular to a metal dust collecting plate, and has the functions of enriching positively charged pollutant particles and guiding away charges carried by the pollutant particles. The enlarged partial position at a is an auxiliary vibration module designed for the vibrating dust collecting plate, which functions to assist the vibration of the dust collecting plate, as shown in fig. 2 in detail, wherein 3 is a vibration module capable of vibrating left and right, 4 is an elastic member, specifically a spring, and 5 is a dust collecting plate fixing groove. Both sides of the dust collecting plate 2 are fixed with the shell through the auxiliary vibration module, one end of the spring is fixed with the shell or the fixing bolt, and the other end of the spring is not required to be fixed with the vibration module 3.

In operation of the device, the positively charged contaminant particles in the vicinity of the corona wire enter the area of the collector plate 2 along the path indicated by the wind direction in fig. 1 and are continuously concentrated on the collector plate 2 by the action of the electric field. During self-cleaning, a high-frequency alternating-current excitation signal is applied to the ultrasonic transducer module 1, so that the ultrasonic transducer module 1 generates high-frequency mechanical vibration (usually, the frequency is 20kHz or 40kHz), and drives the dust collecting plate 2 to vibrate to realize a dust shaking-off effect. Under the condition of high-frequency alternating current signals, the mechanical vibration frequency of the ultrasonic transducer module 1 is influenced by factors such as natural frequency, energy loss, shape and size, installation mode, environment and the like. Usually, the vibration frequency will be different from the input high frequency ac excitation signal, and will show dynamic change under the combined action of various influencing factors.

After the plasma air purifier with the filament plate structure actually works for a period of time, a large amount of pollutant particles can be enriched on the dust collecting plate 2, and the problems of reduced dust collecting efficiency and corrosion damage of the dust collecting plate 2 can be caused if the plasma air purifier cannot be cleaned in time. After a certain amount of dust is accumulated on the dust collecting plate 2 (or after a period of actual work), an alternating current high-frequency signal is applied to the ultrasonic energy conversion module 1 by using an alternating current high-frequency power supply with set cleaning logic to realize the self-cleaning effect. Meanwhile, the dust collecting plate 2 can be heated by utilizing the heat generated when the ultrasonic transduction module 1 vibrates, so that the dust enriched on the dust collecting plate 2 becomes dry and is easy to fall off, the cleaning effect is further improved, and the corrosion of the dust collecting plate 2 is reduced. The dust collecting plate 2 is a part of the cleaner, and when a certain amount of dust is accumulated on the dust collecting plate 2, the performance of the cleaner is degraded. And determining whether to start cleaning according to the attenuation degree of the performance of the whole machine.

The self-cleaning device for the electric purification dust collecting plate based on the piezoelectric effect solves the problem of difficult cleaning of the dust collecting plate in the plasma air purifier by utilizing the electric-mechanical coupling characteristic of the piezoelectric material, and avoids the problems of reduced dust collecting efficiency and corrosion damage of the dust collecting plate. The automatic cleaning of the dust collecting plate module of the plasma air purifier is realized, and the guarantee is provided for further improving the performance; the dust collection efficiency reduction caused by dust in the using process is prevented; the strong corrosiveness of dust in a humid environment is prevented from damaging the dust collecting plate.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A self-cleaning device of a dust collecting plate is characterized by comprising an ultrasonic transduction module and an auxiliary vibration module; the ultrasonic energy conversion module is fixed on the dust collecting plate and used for generating mechanical vibration to drive the dust collecting plate to vibrate; the auxiliary vibration module is connected with the dust collecting plate and used for assisting the vibration of the dust collecting plate.

2. The self-cleaning apparatus of claim 1, wherein the ultrasonic transducer module is a piezoelectric ultrasonic transducer element.

3. The self-cleaning apparatus of claim 1, further comprising an ac power source and a control device, said ac power source connecting said ultrasonic transducer module and said control device.

4. The self-cleaning apparatus of claim 3, wherein the control device is a control board of the electrical device.

5. Self-cleaning device according to claim 3, wherein said control means is a CPU, MCU or FPGA.

6. The self-cleaning apparatus of claim 1, wherein the number of the secondary vibration modules is two or more, and the secondary vibration modules are connected to both sides of the dust collecting plate.

7. The self-cleaning apparatus of claim 1, wherein the auxiliary vibration module comprises a vibration module and a resilient member, the vibration module defines a dust plate retaining slot for retaining the dust plate, and the resilient member is disposed between the vibration module and the retaining member.

8. A self-cleaning apparatus of claim 7, wherein said resilient member is a spring.

9. The self-cleaning apparatus of claim 8, wherein the spring is disposed about the retaining pin of the retaining member.

10. A cleaning device comprising a collecting plate and a self-cleaning apparatus as claimed in any one of claims 1 to 9.

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