CN111664509A - Air conditioner dust removal humidification system that integrates - Google Patents

Air conditioner dust removal humidification system that integrates Download PDF

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Publication number
CN111664509A
CN111664509A CN202010454197.1A CN202010454197A CN111664509A CN 111664509 A CN111664509 A CN 111664509A CN 202010454197 A CN202010454197 A CN 202010454197A CN 111664509 A CN111664509 A CN 111664509A
Authority
CN
China
Prior art keywords
air
air conditioner
dust removal
indoor unit
air inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010454197.1A
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Chinese (zh)
Inventor
王光临
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Nanguo E&m Technology Development Co ltd
Original Assignee
Anhui Nanguo E&m Technology Development Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Nanguo E&m Technology Development Co ltd filed Critical Anhui Nanguo E&m Technology Development Co ltd
Priority to CN202010454197.1A priority Critical patent/CN111664509A/en
Publication of CN111664509A publication Critical patent/CN111664509A/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultra-violet radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/74—Cleaning the electrodes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0076—Indoor units, e.g. fan coil units with means for purifying supplied air by electric means, e.g. ionisers or electrostatic separators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0087—Indoor units, e.g. fan coil units with humidification means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity

Abstract

The invention discloses an air conditioner dust removal humidification integrated system, and relates to the technical field of air conditioner dust removal humidification. The invention comprises a liquid storage tank, a water pump, an indoor unit of an air conditioner, a waste liquid tank and a controller; the air-conditioning indoor unit comprises an air inlet, an electrostatic dust removal plate, an upper baffle, a heat exchanger, an air supply fan and an air supply outlet; the air inlet filtering device is internally provided with a granular activated carbon filter element and a silver ion filtering net; the water pump is arranged on the water delivery pipe; one end of the water delivery pipe is provided with an atomizer; the atomizer is an ultrasonic atomizer. The invention solves the problems that the dust in the existing air conditioner is difficult to remove and the indoor air is polluted when in use by arranging the liquid storage tank, the water pump, the atomizer and the electrostatic dust removal plate; the problem of drying indoor air can effectively remove dust in the air conditioner and reduce the pollution to the indoor air; the indoor air is humidified, so that people feel more comfortable when using the air conditioner.

Description

Air conditioner dust removal humidification system that integrates
Technical Field
The invention belongs to the technical field of air conditioner dust removal and humidification, and particularly relates to an air conditioner dust removal and humidification integrated system.
Background
Air conditioners are also known as air conditioners. People are in the air-conditioned room for a long time, air is not circulated, and people are more likely to suffer from diseases in the aspect of upper respiratory tract. Although the air inlet of the indoor unit of the air conditioner is provided with the filter screen, a lot of dust can be accumulated in the air conditioner after the air conditioner is used for a long time. After the user cleans the filter screen, a lot of dust still exists in the indoor unit of the air conditioner. Thus, even though the user keeps the indoor ventilation frequently, the indoor air is polluted when the air conditioner is used because much dust is stored in the air conditioner. In addition, the humidity of the indoor air becomes low during the long-term use of the air conditioner, and particularly in winter, the indoor air is abnormally dry, and upper respiratory diseases are easily caused. How to effectively take out the dust in the indoor unit of the air conditioner and increase the indoor air humidity becomes the problem to be solved.
Therefore, the invention provides an air-conditioning dedusting and humidifying integrated system to solve the problems.
Disclosure of Invention
The invention aims to provide an air conditioner dust removal humidification integrated system, which solves the problems that the dust in the existing air conditioner is difficult to remove and the indoor air is polluted when in use by arranging a liquid storage tank, a water pump, an atomizer and an electrostatic dust removal plate; the air in the room is dry, which easily causes the problem of respiratory diseases.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to an air conditioner dust removal humidification integrated system, which comprises a liquid storage tank, a water pump, an air conditioner indoor unit, a waste liquid tank and a controller, wherein the waste liquid tank is connected with the controller; the top of the liquid storage tank is connected with a liquid inlet pipe; the liquid inlet pipe is provided with a control valve; a water delivery pipe is arranged on one side surface of the liquid storage tank; a water level sensor is arranged at the position, close to the bottom, of the inner side surface of the liquid storage tank; a water level alarm is arranged on the outer side surface of the liquid storage tank; the water suction pump is arranged on the water delivery pipe; the water suction pump is electrically connected with the controller; an atomizer is arranged at one end of the water delivery pipe; the air conditioner indoor unit comprises an air inlet, an electrostatic dust removal plate, an upper baffle, a heat exchanger, an air supply fan and an air supply outlet; the air inlet is arranged on one side surface of the indoor unit of the air conditioner; an air inlet filtering device is arranged at the air inlet; the upper part and the lower part of the air inlet filtering device are both provided with an electrostatic dust removal plate; the electrostatic dust removal plate is obliquely arranged; the upper baffle is arranged at the inner top of the indoor unit of the air conditioner; an ultraviolet lamp is further arranged on the upper baffle; the air supply outlet is arranged on the other side surface of the indoor unit of the air conditioner; the air supply fan is arranged close to the air supply port; the heat exchange machine is arranged between the air supply fan and the upper baffle; the waste liquid tank is arranged at the bottom of the indoor unit of the air conditioner; a liquid outlet pipe is arranged at the bottom of the waste liquid tank; a control valve is arranged on the liquid outlet pipe; a water level sensor is arranged at the position, close to the top, of the inner side surface of the waste liquid tank; a water level alarm is arranged on the outer side surface of the waste liquid tank; the controller is arranged on the top of the indoor unit of the air conditioner.
Further, the atomizer is an ultrasonic atomizer.
Furthermore, a granular activated carbon filter element and a silver ion filter screen are arranged in the air inlet filter device.
Furthermore, the electrostatic dust removal plate above the air inlet filtering device is a negative plate; and the electrostatic dust removal plate below the air inlet filtering device is a positive plate.
Further, the inclination angle of the electrostatic dust collection plate is 30-45 degrees.
Furthermore, a humidity sensor is arranged above the air supply outlet.
The invention has the following beneficial effects:
1. the invention aims at the problems that the dust in the air conditioner is difficult to remove and the air conditioner pollutes the indoor air when in use, and the electrostatic dust removal plate, the air inlet filtering device and the atomizer are arranged, so that the dust in the air conditioner can be effectively removed, and the pollution to the indoor air is reduced.
2. The invention aims at the problems that the humidity of indoor air is reduced, the indoor air is very dry and uncomfortable in the long-time use process of the air conditioner, and the liquid storage tank, the water suction pump, the atomizer and the waste liquid tank are arranged, so that the indoor air can be humidified in the use process of the air conditioner, and people feel more comfortable when using the air conditioner.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air conditioning dedusting and humidifying integrated system of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-liquid storage tank, 2-water pump, 3-indoor air conditioner, 4-waste liquid tank, 5-controller, 6-liquid inlet pipe, 7-control valve, 8-atomizer, 9-liquid outlet pipe, 10-water level sensor, 11-water level alarm, 12-water pipe, 301-air inlet, 302-air inlet filter device, 303-electrostatic dust removal plate, 304-upper baffle, 305-ultraviolet lamp, 306-heat exchanger, 307-air supply fan, 308-air supply outlet and 309-humidity sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "top," "side," "inside," "outside," "end," "above," "below," "bottom," and the like are used merely for convenience in describing the invention and to simplify the description, and do not indicate or imply that the components or elements so referred to must be in a particular orientation, constructed and operated in a particular orientation, and therefore are not to be considered as limiting the invention.
Referring to fig. 1, the invention relates to an air-conditioning dust-removing and humidifying integrated system, which comprises a liquid storage tank 1, a water pump 2, an air-conditioning indoor unit 3, a waste liquid tank 4 and a controller 5; the top of the liquid storage tank 1 is connected with a liquid inlet pipe 6; a control valve 7 is arranged on the liquid inlet pipe 6; a water delivery pipe 12 is arranged on one side surface of the liquid storage tank 1; a water level sensor 10 is arranged at the position, close to the bottom, of the inner side surface of the liquid storage tank 1; a water level alarm 11 is arranged on the outer side surface of the liquid storage tank 1; the water pump 2 is arranged on the water delivery pipe 12; the water pump 2 is electrically connected with the controller 5; one end of the water delivery pipe 12 is provided with an atomizer 8; the atomizer 8 is an ultrasonic atomizer 8; the indoor unit 3 of the air conditioner comprises an air inlet 301, an electrostatic dust collection plate 303, an upper baffle plate 304, a heat exchanger 306, an air supply fan 307 and an air supply outlet 308; the air inlet 301 is arranged on one side surface of the indoor unit 3 of the air conditioner; an air inlet filter device 302 is arranged at the air inlet 301; a granular activated carbon filter element and a silver ion filter screen are arranged in the air inlet filter device 302; the electrostatic dust removal plate 303 above the intake air filtering device 302 is a negative plate; the electrostatic dust removal plate 303 below the air inlet filtering device 302 is a positive plate; the inclination angle of the electrostatic dust collection plate 303 is 30-45 degrees; electrostatic dust removal plates are arranged above and below the air inlet filtering device 302; the electrostatic dust removal plate 303 is arranged obliquely; the upper baffle 304 is arranged at the top of the air conditioner indoor unit 3; an ultraviolet lamp 305 is also arranged on the upper baffle plate 304; the air supply outlet 308 is arranged on the other side surface of the air-conditioning indoor unit 3; a humidity sensor 309 is also arranged above the air supply outlet 308; the air supply fan 307 is arranged near the air supply outlet 308; the heat exchange machine is provided between the air supply fan 307 and the upper baffle 304; the waste liquid tank 4 is arranged at the bottom of the indoor unit 3 of the air conditioner; a liquid outlet pipe 9 is arranged at the bottom of the waste liquid tank 4; a control valve 7 is arranged on the liquid outlet pipe 9; a water level sensor 10 is arranged at the position, close to the top, of the inner side surface of the waste liquid tank 4; a water level alarm 11 is arranged on the outer side surface of the waste liquid tank 4; the controller 5 is arranged on the top of the air-conditioning indoor unit 3.
One specific application of this embodiment is:
the air firstly passes through an air inlet filter device 302 from an air inlet 301, and peculiar smell and partial bacteria in the air are filtered; dust in wind is totally enriched on the positive plate of the electrostatic dust removal plate under the action of the electrostatic dust removal plate 303, and a small part of dust falls on the heat exchanger 306;
opening the control valve 7, and putting a certain amount of tap water into the liquid storage tank 1; the water suction pump 2 is turned on, the water in the liquid storage tank 1 is pumped out by the water suction pump 2 through the water conveying pipe 12 and reaches the atomizer 8, and the atomizer 8 atomizes the liquid water into vapor; turning on the air conditioner, under the action of the air supply fan 307, part of the water vapor washes away the dust on the dust removing plate and the dust on the heat exchanger 306, and the sewage flows into the waste liquid tank; thereby achieving the effect of removing dust in the air conditioner;
the other part of the water vapor enters the room from the air supply outlet 308, so that the effect of humidifying the indoor air is achieved; therefore, the system can remove dust in the air conditioner and increase the humidity of indoor air;
when the humidity sensor 309 senses that the indoor air is dry, the controller 5 controls the water pump 2 to pump water, so as to perform humidification operation; the ultraviolet lamp 305 on the upper baffle 304 operates continuously to sterilize air and ensure that sterile air enters the room; when the water level in the liquid storage tank 1 is reduced below the water level sensor 10, the water level alarm 11 on the outer side surface of the liquid storage tank 1 starts to give an alarm to prompt water addition; when the water level in the waste liquid tank 4 rises above the water level sensor 10, the water level alarm 11 on the outer side surface of the waste liquid tank 4 starts to give an alarm; the drainage of the waste water in the waste liquid tank 4 is prompted.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. An air conditioner dust removal humidification integrated system comprises a liquid storage tank (1), a water suction pump (2), an air conditioner indoor unit (3), a waste liquid tank (4) and a controller (5);
the method is characterized in that:
the top of the liquid storage tank (1) is connected with a liquid inlet pipe (6); a control valve (7) is arranged on the liquid inlet pipe (6); a water delivery pipe (12) is arranged on one side surface of the liquid storage tank (1); a water level sensor (10) is arranged at the position, close to the bottom, of the inner side surface of the liquid storage tank (1); a water level alarm (11) is arranged on the outer side surface of the liquid storage tank (1);
the water suction pump (2) is arranged on the water delivery pipe (12); the water suction pump (2) is electrically connected with the controller (5); an atomizer (8) is arranged at one end of the water delivery pipe (12);
the air-conditioning indoor unit (3) comprises an air inlet (301), an electrostatic dust removal plate (303), an upper baffle plate (304), a heat exchanger (306), an air supply fan (307) and an air supply outlet (308); the air inlet (301) is arranged on one side surface of the indoor unit (3) of the air conditioner; an air inlet filtering device (302) is arranged at the air inlet (301); the upper part and the lower part of the air inlet filtering device (302) are provided with electrostatic dust removal plates; the electrostatic dust removal plate (303) is obliquely arranged; the upper baffle (304) is arranged at the top of the air conditioner indoor unit (3); an ultraviolet lamp (305) is further arranged on the upper baffle (304); the air supply outlet (308) is arranged on the other side surface of the indoor unit (3) of the air conditioner; the air supply fan (307) is arranged close to the air supply outlet (308); the heat exchange machine is arranged between the air supply fan (307) and the upper baffle (304);
the waste liquid tank (4) is arranged at the bottom of the indoor unit (3) of the air conditioner; a liquid outlet pipe (9) is arranged at the bottom of the waste liquid tank (4); a control valve (7) is arranged on the liquid outlet pipe (9); a water level sensor (10) is arranged at the position, close to the top, of the inner side surface of the waste liquid tank (4); a water level alarm (11) is arranged on the outer side surface of the waste liquid tank (4); the controller (5) is arranged at the top of the indoor unit (3) of the air conditioner.
2. An air-conditioning dedusting and humidifying integrated system as claimed in claim 1, wherein the atomizer (8) is an ultrasonic atomizer (8).
3. The air-conditioning dedusting and humidifying integrated system as claimed in claim 1 or 2, wherein a granular activated carbon filter element and a silver ion filter screen are arranged in the air inlet filtering device (302).
4. The air-conditioning dedusting and humidifying integrated system as recited in claim 3, wherein the electrostatic dedusting plate (303) above the air inlet filtering device (302) is a negative plate; and the electrostatic dust removal plate (303) below the air inlet filtering device (302) is a positive plate.
5. An air conditioning, dust removing and humidifying integrated system as claimed in claim 1, 2 or 4, wherein the inclination angle of the electrostatic dust removing plate (303) is 30 ° -45 °.
6. The dedusting and humidifying integrated system of claim 5, wherein a humidity sensor (309) is further arranged above the air supply outlet (308).
CN202010454197.1A 2020-05-26 2020-05-26 Air conditioner dust removal humidification system that integrates Withdrawn CN111664509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010454197.1A CN111664509A (en) 2020-05-26 2020-05-26 Air conditioner dust removal humidification system that integrates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010454197.1A CN111664509A (en) 2020-05-26 2020-05-26 Air conditioner dust removal humidification system that integrates

Publications (1)

Publication Number Publication Date
CN111664509A true CN111664509A (en) 2020-09-15

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ID=72384790

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010454197.1A Withdrawn CN111664509A (en) 2020-05-26 2020-05-26 Air conditioner dust removal humidification system that integrates

Country Status (1)

Country Link
CN (1) CN111664509A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117437760A (en) * 2023-12-20 2024-01-23 深圳市一诺智控科技有限公司 Design method and system for PCBA dust removal prompt

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117437760A (en) * 2023-12-20 2024-01-23 深圳市一诺智控科技有限公司 Design method and system for PCBA dust removal prompt
CN117437760B (en) * 2023-12-20 2024-02-23 深圳市一诺智控科技有限公司 Design method and system for PCBA dust removal prompt

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Application publication date: 20200915