JP2009273974A - Dust remover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust remover which efficiently removes dust adhered to household electric appliances by a simple device. <P>SOLUTION: The dust remover 10 removes dust from household electric appliances to be disassembled for recycle and includes a compressor 51 generating compressed air, a tank 36 and an air spraying unit 30 spraying air onto an electric appliance. The tank 36 temporarily stores and boosts the air supplied from the compressor 51. The air spraying unit 30 has a valve 33 controlling the opening and closing of an air passage 34 from the tank 36 to an electric appliance. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention generally relates to a dust removing device, and more specifically, to a dust removing device that removes dust attached to household appliances to be recycled.

  Regarding a conventional dust removing device, for example, Japanese Patent Application Laid-Open No. 11-319740 discloses a dust removing device for the purpose of easily removing dust of less than 20 μm (Patent Document 1).

The dust removing device disclosed in Patent Document 1 is used to remove minute dust in the manufacturing and assembling processes of precision instruments and the like, and enhances the reliability and performance of the finished product. The dust removing device includes an air ejecting unit that ejects air of a predetermined pressure from an air nozzle to the assembly, and a suction unit that sucks dust that has been lifted into the air by the air ejection. The air jetting by the air jetting means is intermittent, and when jetting is stopped, air with a flow velocity of about 2 m / s is sent out from the air nozzle in order to keep the inside of the dust removing device at a positive pressure.
JP 11-319740 A

  In recent years, general waste and industrial waste have increased in general production and consumption activities in society, and global environmental problems such as illegal dumping and landfill tightness are attracting attention. For this reason, the shift from the conventional mass production, mass consumption, and mass disposal type economic system to the resource recycling type economic system has become an important social issue.

  In response to the above situation, the Home Appliance Recycling Law has been in force since April 2001. Under the law, it is obliged to recycle four home appliances such as air conditioners, televisions, refrigerators and washing machines. When recycling materials such as metal, plastic, and glass contained in these home appliances, first, home appliances composed of various parts / materials are dismantled by hand dismantling, and collected for each part / material. After that, the material sorted for each material is recycled as the original material.

  In the recycling process performed in such a flow, when the household electrical appliance provided as waste is manually disassembled, dust accumulated inside the household electrical appliance may be diffused when the household electrical appliance is used. In this case, there is a concern that a person engaged in the dismantling work may suck dust and cause health damage. Therefore, it is desired to remove the dust accumulated in the interior of the household appliance after removing the cabinet and exposing the interior.

  As a method for removing dust from home appliances, a method of injecting high-flow-rate, high-pressure air to home-appliances can be considered. A large-scale facility such as a compressor is required. In a recycling plant for home appliances, a dust removal device capable of removing dust with simple equipment is desired. On the other hand, speeding up the disassembly work of home appliances is desired, and in order to meet this demand, it is necessary to efficiently proceed with dust removal processing.

  In view of the above, an object of the present invention is to solve the above-described problems, and to provide a dust removal device that efficiently removes dust adhering to home appliances with simple equipment.

  The dust removing device according to the present invention is a dust removing device that removes dust from household electrical appliances that are disassembled for recycling. The dust remover includes a compressor that generates compressed air, a tank, and an air injection unit that injects air to the home appliance. The tank temporarily stores the air supplied from the compressor and boosts the pressure. The air injection unit includes a valve that controls opening and closing of a flow path of an air flow from the tank toward the home appliance.

  According to the dust removing device configured as described above, the air supplied from the compressor is boosted to a predetermined value in the tank, and the boosted air is injected toward the home appliance through the opening / closing control of the flow path by the valve. For this reason, air of sufficient pressure can be injected to household appliances irrespective of the performance, capacity, usage situation, and the like of the compressor. Thereby, the dust adhering to the home appliance can be efficiently removed with simple equipment.

  Preferably, the flow path is controlled to be opened and closed by a valve so that air is injected in a pulsed manner. According to the dust removing device configured as described above, the performance and the like required for the compressor can be reduced as compared with the case where air is continuously injected. Moreover, dust can be efficiently removed by jetting high-pressure air for a short time.

  Preferably, a plurality of air injection units are provided so that air is injected from a plurality of locations toward the home appliance. A tank is provided corresponding to each of the plurality of air injection units. According to the dust removing device configured as described above, dust can be efficiently removed by ejecting high-pressure air from a plurality of locations.

  Preferably, the flow path is controlled to be opened and closed by a valve so that air is ejected while shifting the timing among a plurality of air ejection sections. According to the dust removing device configured as described above, air can be sprayed onto the home appliance while suppressing interference between the air ejected from the plurality of air ejecting units. Thereby, the dust adhering to household appliances can be removed efficiently.

  Preferably, the dust removing device further includes a cover body disposed so as to surround the home appliance. The pressure in the cover body is set lower than the pressure outside the cover body. According to the dust removing device configured as described above, it is possible to suppress the dust scattered inside the cover body from flowing out to the outside of the cover body, and to prevent the working environment from deteriorating.

  Moreover, the household appliances to be dismantled are flat-screen televisions. According to the dust removing device configured as described above, any of the above-described effects can be obtained in the dismantling plant of the flat-screen television.

  As described above, according to the present invention, it is possible to provide a dust removing device that efficiently removes dust adhering to home appliances with simple equipment.

  Embodiments of the present invention will be described with reference to the drawings. In the drawings referred to below, the same or corresponding members are denoted by the same reference numerals.

  FIG. 1 is a diagram schematically showing a configuration of a dust removing device according to an embodiment of the present invention. Referring to FIG. 1, a dust removing device 10 is installed in a recycling plant for home appliances provided as waste. The dust removing device 10 is a device that removes dust from household appliances to be dismantled.

  The dust removing apparatus 10 includes a compressor 51 installed in a recycling plant for home appliances, a tank 36 connected to the compressor 51, and an air injection unit 30 that is connected to the tank 36 and injects air toward the home appliance. Have.

  The compressor 51 generates compressed air. The air compression method is not particularly limited, and may be, for example, a reciprocating type, a screw type, or a rotary type. The compressor 51 has a built-in tank that stores compressed air. In the recycling plant, apparatus facilities 52 and 53 are installed in addition to the dust removing apparatus 10, and in the present embodiment, the compressor 51 supplies compressed air to the apparatus facilities 52 and 53.

  The tank 36 is formed of a sealed container that can store air. The tank 36 has a capacity of 3 L, for example. In general, the capacity of the tank 36 is smaller than the capacity of the internal tank of the compressor 51. The tank 36 is connected to the compressor 51 through the air flow path 35. The tank 36 temporarily stores the compressed air supplied from the compressor 51 and raises the pressure.

  The air injection unit 30 includes an air flow path 34, a valve 33, and a nozzle 31. The air flow path 34 is connected to the tank 36. The air flow path 34 guides the compressed air pressurized in the tank 36 toward the home appliance. The valve 33 is installed on the path of the air flow path 34, and opens and closes the air flow path 34 by electronic control. The nozzle 31 is provided at the end of the air flow path 34 extending from the tank 36. By opening the valve 33, an air flow from the tank 36 to the home appliance in the air flow path 34 is allowed. At this time, the compressed air in the tank 36 is ejected at once from the nozzle 31 to the home appliance, whereby dust accumulated on the home appliance is removed.

  In the present embodiment, a plurality of air injection units 30 are provided so that air is injected from a plurality of locations toward the home appliance. A tank 36 is provided corresponding to each of the plurality of air injection units 30. Each of the plurality of air injection units 30 has an air flow path 34 that extends independently between the tank 36 and the nozzle 31.

  Next, a more specific structure of the dust removing device 10 in FIG. 1 will be described. FIG. 2 is a side view showing the dust removing device in FIG. 1. FIG. 3 is a cross-sectional view of the dust removing device along the line III-III in FIG. 2.

  2 and 3, home appliance 100 from which dust is removed by dust removing device 10 is typically a flat-screen television. The type of the thin TV is not particularly limited as long as it is a thin TV on which a thin panel unit such as a liquid crystal panel, a plasma display panel (PDP), an organic EL panel, or a field emission display panel is mounted. Household appliance 100 may be a household appliance other than a flat-screen TV, such as a cathode ray tube TV, an air conditioner, a refrigerator, or a washing machine.

  The dust removing device 10 includes a cover body 12, a carry-in station 21 and a carry-out station 22, and a carry roller 19. The cover body 12 forms a dust removal space 11 for removing dust. The carry-in station 21 and the carry-out station 22 are provided on both sides of the cover body 12. The home appliance 100 is set in the carry-in station 21 with the cabinet (outer box) removed. The home appliance 100 that has undergone the dust removal step is carried out of the dust removal space 11 to the carry-out station 22.

  A carry-in port 13 and a carry-out port 14 of the household electrical appliance 100 are formed on side surfaces of the cover body 12 that face each other. The carry-in station 21 and the dust removal space 11 communicate with each other through the carry-in port 13, and the carry-out station 22 and the dust removal space 11 communicate with each other through the carry-out port 14. The household electrical appliance 100 is carried into and out of the dust removal space 11 through the carry-in port 13 and the carry-out port 14 respectively.

  The cover body 12 is provided with a carry-in door 16 and a carry-out door 17 for opening and closing the carry-in port 13 and the carry-out port 14, respectively. The carry-in door 16 is opened at a timing when the home appliance 100 is carried into the dust removal space 11 from the carry-in station 21, and the carry-out door 17 is opened at a timing when the home appliance 100 is carried out from the dust removal space 11 to the carry-out station 22. The carry-in port 13 and the carry-out port 14 are closed while the dust removal process of the home appliance 100 is performed.

  The transport roller 19 is formed of a plurality of rollers that can be rotationally driven. The conveyance roller 19 is provided across the carry-in station 21, the dust removal space 11, and the carry-out station 22. By placing the home appliance 100 on the transport roller 19, the home appliance 100 is transported from the carry-in station 21 toward the dust removal space 11. A movable arm 18 as a locking member is provided in the cover body 12. The household electrical appliance 100 that has been carried into the dust removal space 11 is retained in the dust removal space 11 by being locked to the movable arm 18. When the dust removal process is finished, the movable arm 18 retreats from the position where the home appliance 100 is locked, so that the home appliance 100 is transported from the dust removal space 11 toward the carry-out station 22.

  In addition, the conveyance means which carries in and carries out the household appliances 100 in the dust removal space 11 is not restricted to the conveyance roller 19, For example, a belt-shaped conveyor type thing may be sufficient and a robot arm may be sufficient. Moreover, the household appliances 100 may be carried in and out by the manual work by the person engaged in the dismantling work. Moreover, the dust removal apparatus 10 may be integrated in a line as a part which implements the recycling process of the household appliances 100. FIG.

  The nozzle 31 which each air injection part 30 in FIG. 1 has is shown as nozzle 31A, 31B, 31C, 31D, 31E, 31F, 31G, 31H, 31I, 31J. The nozzles 31 </ b> A to 31 </ b> J are disposed in the dust removal space 11. The nozzles 31 </ b> A to 31 </ b> J are arranged so as to be located above the home appliance 100 carried into the dust removal space 11. The nozzles 31 </ b> A to 31 </ b> E and the nozzles 31 </ b> F to 31 </ b> J are arranged on both sides of the home appliance 100.

  Note that the number and arrangement of the nozzles 31 illustrated in the drawing are merely examples, and are appropriately changed according to the type and shape of the home appliance 100, the amount of dust accumulated on the home appliance 100, and the like.

  The dust removing device 10 includes exhaust ducts 26 and 27 and a fan 41 as suction mechanisms. The exhaust ducts 26 and 27 are connected to the cover body 12 so as to communicate with the dust removal space 11. In the present embodiment, the exhaust duct 26 and the exhaust duct 27 are connected to the side surface of the cover body 12 at a distance from each other. On the path of the exhaust ducts 26 and 27, a fan 41 that generates a suction force is installed. As the fan 41 is driven, dust scattered in the dust removal space 11 is collected through the exhaust ducts 26 and 27.

  4 is a cross-sectional view showing a state of the dust removing device in FIG. 3 during a dust removing step. With reference to FIGS. 2 and 4, the nozzles 31 </ b> A to 31 </ b> J are supported by a movable frame 32 provided in the dust removal space 11.

  When the home appliance 100 is carried in and out, the nozzles 31 </ b> A to 31 </ b> J are positioned at positions retracted from the conveyance path of the home appliance 100. On the other hand, when the movable frame 32 operates during the dust removal process of the home appliance 100, the nozzles 31A to 31J move from the position retracted from the conveyance path of the home appliance 100 to a position close to the home appliance 100. With such a configuration, compressed air can be injected from a position closer to the home appliance 100 during the dust removal process while avoiding interference between the nozzles 31A to 31J and the home appliance 100 being conveyed.

  Further, in the present embodiment, the air injection flow rate and the exhaust flow rate are adjusted so that the pressure of the dust removal space 11 in the cover body 12 is lower than the pressure outside thereof. With such a configuration, it is possible to prevent dust scattered in the dust removal space 11 from flowing out into the work space from the gap of the cover body 12.

  Then, the timing which injects compressed air to the household appliances 100 in the dust removal apparatus 10 in FIG. 1 is demonstrated.

  FIG. 5 is a graph showing the opening / closing timing of the valve in FIG. Referring to FIG. 5, the opening / closing timing of valve 33 that controls air injection from each nozzle of nozzles 31 </ b> A to 31 </ b> J is shown.

  In the present embodiment, the air flow path 34 is controlled to be opened and closed by the valve 33 so that the air is jetted in a pulsed manner. The time during which the valve 33 is opened, that is, the time during which air is ejected from the nozzles 31A to 31J, is preferably 0.1 seconds or less. More preferably, the time for which the valve 33 is opened is 0.05 seconds or less.

  Since the compressor 51 supplies the compressed air to the equipment facilities 52 and 53 other than the dust removing device 10, it is assumed that the amount of air supplied to the dust removing device 10 is limited. Even in such a case, in the present embodiment, air is injected in a pulsed manner by the opening / closing control of the air flow path 34 by the valve 33. Can be sprayed onto the home appliance 100. For example, in the dust removing apparatus 10 having the nozzles 31A to 31J in FIG. 3, when the pressure in the tank 36 during the opening operation of the valve 33 is 0.5 MPa and the opening time of the valve 33 is 0.05 seconds. The injection flow rate of air can be suppressed to 564 L / min.

  Further, in the present embodiment, the air flow path 34 is controlled to be opened and closed by the valve 33 so that air is ejected while shifting the timing among the plurality of air ejection units 30.

  More specifically, first, air is simultaneously injected from the nozzle 31A and the nozzle 31F, and then air is simultaneously injected from the nozzle 31B and the nozzle 31G. Further, the air is sequentially ejected from the nozzle 31C and the nozzle 31H, the nozzle 31D and the nozzle 31I, the nozzle 31E and the nozzle 31J while shifting the timing. The dust removal process of the household electrical appliance 100 is completed by performing air injection through the nozzles 31 </ b> A to 31 </ b> J.

  After completion of the dust removal process, the household electrical appliance 100 that has been subjected to the dust removal process is carried out from the dust removal space 11 to the carry-out station 22. A new home appliance 100 is carried into the dust removal space 11 from the carry-in station 21 simultaneously with the carry-out of the home appliance 100 or after the carry-out of the home appliance 100. As before, air injection is again performed by the nozzles 31 </ b> A to 31 </ b> J, and a new dust removal process for the home appliance 100 is performed.

  As described above, in the present embodiment, air is ejected while shifting the timing among the plurality of air ejection units 30. In this case, it is possible to avoid a situation in which the air jetted from the nozzles 31A to 31J interferes with each other before reaching the home electric appliance 100, and thus the dust removal efficiency is lowered.

  In addition, the timing which injects air from nozzle 31A-31J may be changed suitably. For example, air may be ejected while shifting the timing among all of the nozzles 31A to 31J, or the combination of the nozzles 31A to 31J to be ejected at the same time may be changed.

  FIG. 6 is a graph showing the pressure change in the tank in FIG. Referring to FIG. 6, when the nozzle 31 is opened, the pressure in the tank 36 rapidly decreases from P1 to P2. After the nozzle 31 is closed, the pressure in the tank 36 gradually increases upon receiving the air supply from the compressor 51, and recovers to P1 before the next air injection. The pressure P1 is, for example, 0.5 MPa.

  In the present embodiment, it is possible to sufficiently secure the time for receiving the air supply from the compressor 51 during the air injection by the other nozzles 31 and the carry-out and carry-in processes of the home appliance 100 after the air injection by the nozzles 31. . For this reason, the cycle of the dust removal process which injects high voltage | pressure air to the household appliances 100 can be performed continuously.

  Dust removal apparatus 10 according to the embodiment of the present invention removes dust from household electrical appliance 100 that is disassembled for recycling. The dust removing device 10 includes a compressor 51 that generates compressed air, a tank 36, and an air injection unit 30 that injects air to the home appliance 100. The tank 36 temporarily stores the air supplied from the compressor 51 and increases the pressure. The air injection unit 30 includes a valve 33 that controls opening and closing of an air flow path 34 as a flow path of air flow from the tank 36 toward the home appliance 100.

  According to the dust removing device 10 according to the embodiment of the present invention configured as described above, even when the amount of air supplied from the compressor 51 is limited, the dust attached to the home appliance 100 is efficiently removed. Can be removed.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a figure which represents typically the structure of the dust removal apparatus in embodiment of this invention. It is a side view which shows the dust removal apparatus in FIG. It is sectional drawing of the dust removal apparatus along the III-III line in FIG. It is sectional drawing which shows the state at the time of the dust removal process of the dust removal apparatus in FIG. It is a graph which shows the opening / closing timing of the valve | bulb in FIG. It is a graph which shows the pressure change in the tank in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Dust removal device, 12 Cover body, 30 Air injection part, 33 Valve, 34 Air flow path, 36 Tank, 51 Compressor, 100 Household appliances.

Claims (6)

A dust removing device that removes dust from household appliances to be dismantled for recycling,
A compressor that generates compressed air;
A tank for temporarily storing and boosting the air supplied from the compressor;
A dust removal apparatus comprising: a valve that controls opening and closing of a flow path of an air flow from the tank toward the home appliance, and an air injection unit that injects air to the home appliance.   The dust removal device according to claim 1, wherein the flow path is controlled to be opened and closed by the valve so that air is jetted in a pulsed manner. A plurality of the air injection portions are provided so that air is injected from a plurality of locations toward the home appliance,
The dust removing device according to claim 1, wherein the tank is provided corresponding to each of the plurality of air injection units.   The dust removing device according to claim 3, wherein the opening and closing of the flow path is controlled by the valve so that air is injected while shifting the timing between the plurality of air injection units. A cover body arranged to surround the home appliance;
The dust removing device according to any one of claims 1 to 4, wherein a pressure in the cover body is set lower than a pressure outside the cover body.   The dust removing device according to any one of claims 1 to 5, wherein the household electrical appliance to be disassembled is a flat-screen television.

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