JP6254710B2 - Ion generator - Google Patents

Description

  The present invention relates to an ion generator that generates ions by discharge in air.

  In the ion generator, positive ions and negative ions are generated by discharge in the air, and the generated ions are released into the air. When the released positive ions and negative ions strike a charged object, static electricity on the object surface is neutralized and the object is discharged.

  In order to neutralize an object, positive ions and negative ions must be evenly distributed. In the ion generator described in Patent Document 1, positive discharge electrodes and negative discharge electrodes are alternately arranged in the width direction and the front-rear direction, and a voltage is alternately applied to the front and rear discharge electrodes. Thereby, positive ions and negative ions are generated uniformly both in space and in time, and a uniform ion balance can be realized.

JP 2014-154416 A

  When the air outlet is formed so as to spread in the width direction, ions blown out from the end in the width direction of the air outlet spread outward along the side wall of the air outlet. Ions blown out from the end in the width direction are diffused, and the ions blown out from the end are easily out of balance as compared to the intermediate portion in the width direction. When the ion balance is deteriorated, an object to be neutralized is charged.

  In view of the above, an object of the present invention is to provide an ion generator capable of blowing ions widely while preventing the deterioration of the balance of ions blown from the end in the width direction.

  The ion generator of the present invention includes an ion generator that generates ions by discharge, and a fan that discharges ions generated in the ventilation path to the outside from the blowout port by blowing air, and has an end portion in the width direction at the blowout port. The guide part which makes the ion blown from the intermediate part of the width direction merge with the ion blown from is provided.

  By the guide part, the ions on the end side and the ions from the intermediate part are mixed. Thereby, even if the balance of ions on the end side is broken, balanced ions are mixed, so that the ion balance on the end side is improved.

  The air outlet is provided with a plurality of louvers along the width direction, and the guide portion is configured so that the louver on the end side in the width direction and the side wall of the air outlet become closer toward the downstream side in the air blowing direction. Is done. That is, the louver at the end and the side wall of the outlet guide the ions so that the ions blown from the end and the ions blown from the intermediate part merge.

  The louver is provided obliquely so that the tip of the louver located at the end in the width direction approaches the side wall. The side wall of the outlet is formed in parallel with the blowing direction. The louver is arranged so as to approach the side wall of the air outlet, and balanced ions spread from the middle part to the end part side.

  The ion generator has a positive discharge electrode for generating positive ions and a negative discharge electrode for generating negative ions, the positive discharge electrodes and the negative discharge electrodes are alternately arranged in the width direction, and the fan is The cross flow fan has a plurality of impellers, and the center in the axial direction of the impeller faces each discharge electrode. The wind speed at the center of the impeller is maximum. Ions generated from the discharge electrode are delivered far by the strong wind of the fan.

  According to the present invention, by introducing balanced ions from the intermediate portion in the width direction to the end side, it is possible to prevent deterioration of ion balance and blow out ions having a uniform ion balance.

The perspective view of the ion generator of this invention Front view of ion generator Rear view of ion generator Cross section of ion generator The figure which shows the ventilation path and blower outlet which were provided with the ion generator Ion generator control block diagram The figure which shows the position of the ion sensor with respect to the ion generator The figure which shows the positional relationship of the discharge electrode with respect to the wind speed distribution of a cross flow fan The figure which shows the board | substrate cover and circuit board which form a part of ventilation path Front view of the lower wall of the ventilation path The figure which shows the ventilation path and blower outlet of another form The figure which shows the ventilation path and blower outlet of another form

(First embodiment)
The ion generator of this embodiment is shown in FIGS. The ion generator includes an ion generator 1 that generates ions, a fan 2 that discharges the generated ions to the outside, a housing 3 that houses the ion generator 1 and the fan 2, and a housing 3 that rotatably supports the ion generator. A stand 4 is provided. The stand 4 has a function of maintaining the angle of the rotated housing 3 and can adjust the angle of the housing 4. The ion generator 1 generates positive ions and negative ions. By removing the charge of positive ions and negative ions on the surface of the object, the target object can be neutralized. That is, this ion generator is used as a static eliminator.

  A suction port 5 is formed on the upper surface of the housing 3, and an air outlet 6 is formed on the front surface. A ventilation path 7 extending from the suction port 5 to the blowout port 6 is formed in the housing 3. A filter is provided near the suction port 5 in the air passage 7.

  The fan 2 is disposed on the inlet side of the ventilation path 7. The fan 2 is a cross flow fan and is rotatably held by the housing 3. The cross flow fan is formed by connecting a plurality of impellers 10 in the axial direction, and is rotated by a motor 11 disposed at one end. Therefore, the blowing direction by the fan 2 is a direction from the rear side to the front side in the front-rear direction.

  On the downstream side of the fan 2, the ventilation path 7 is surrounded by walls on all sides, curved so as to be horizontal from below, and is formed substantially horizontally toward the front surface of the housing 3. The left and right side walls 15 of the ventilation path 7 are formed in parallel to each other and perpendicular to the lower wall 16. The upper wall 17 of the ventilation path 7 is inclined obliquely upward toward the front side. The width of the ventilation path 7 does not change in the left-right direction, that is, the width in the left-right direction is the same from the upstream side to the downstream side. And it spreads upwards as it goes downstream.

  A recess 20 is formed on the front surface of the housing 3, the back side of the recess 20 is opened, and communicates with the ventilation path 7. This recess 20 is the outlet 6. The left and right side walls 15 of the ventilation path 7 are extended to be the left and right side walls of the air outlet 6. The width in the left-right direction of the air outlet 6 is the same as the width in the left-right direction of the ventilation path 7. The blower outlet 6 spreads up and down as it goes to the front side. A louver 21 that determines the wind direction in the left-right direction is provided at the air outlet 6. Reference numeral 22 denotes a horizontal plate extending in the left-right direction.

  The ion generator 1 has two discharge electrodes 25 and 26, and the two needle-like discharge electrodes 25 and 26 are accommodated in a resin case 27. A high voltage generation circuit 28 for applying a high voltage to the discharge electrodes 25 and 26 is provided in the case 27. The discharge electrodes 25 and 26 are a positive discharge electrode 25 that generates positive ions and a negative discharge electrode 26 that generates negative ions, and the discharge electrodes 25 and 26 are arranged side by side at a predetermined interval in the left-right direction. .

  The ion generator includes a plurality of ion generators 1. The ion generator 1 is provided on the upper wall 17 of the ventilation path 7. The lower part of the ion generator 1 is located in the ventilation path 7, and the discharge electrodes 25 and 26 face the ventilation path 7. As shown in FIG. 5, the several ion generator 1 is arrange | positioned along with the front and rear, right and left at fixed intervals. That is, the three ion generators 1 are arranged in a line in the left-right direction. Moreover, two rows of ion generators 1 are arranged back and forth along the blowing direction. In the ventilation path 7, the ion generator 1 in the rear row is located at a position lower than the ion generator 1 in the front row. On the upstream side in the blowing direction, ions are generated at a low position, and on the downstream side, ions are generated at a position higher than the upstream side. Thereby, the blown out ions spread in the vertical direction.

  In adjacent ion generators 1, the front, rear, left and right discharge electrodes 25, 26 have opposite polarities. That is, in the ion generators 1 arranged side by side, when the negative discharge electrode 26 is on the upstream side (back row) in the blowing direction, the positive discharge electrode 25 is on the downstream side (front row). Further, in the ion generators 1 arranged in the left-right direction, when one ion generator 1 has the positive discharge electrode 25, the negative discharge electrode 26 comes in the adjacent ion generator 1.

  As shown in FIG. 6, the ion generator includes an operation switch 30 and an air volume switch 31, and a control device 32 that drives and controls the ion generator 1 and the fan. The operation switch 30 is provided on the front surface of the housing 3. The control device 32 operates the ion generator 1 and the fan 2 when the operation switch 30 is turned on. When the operation switch 30 is turned on, the control device 32 controls the driving of the high voltage generation circuit 28 of each ion generator 1. When the air volume switch 31 is operated, the control device 32 changes the rotational speed of the fan 2 in accordance with the set air volume. Thereby, the strength of the air volume is switched.

  The high voltage generation circuit 28 applies a high voltage of the same level to the positive discharge electrode 25 and the negative discharge electrode 26. The control device 32 controls the high voltage generation circuit 28 so as to repeat application and application stop at a constant period. Thereby, in one ion generator 1, the same amount of positive ions and negative ions are simultaneously generated at a constant cycle.

  Then, the high voltage generation circuit 28 of the ion generator 1 in the front row and the high voltage generation circuit 28 of the ion generator 1 in the rear row are driven with a half cycle shift. That is, when the ion generator 1 in the rear row is generating ions, the ion generator 1 in the front row is stopped. When the ion generator 1 in the front row is generating ions, the ion generator 1 in the rear row is stopped. The front and rear ion generators 1 alternately generate the same amount of positive ions and negative ions. The generated ions are carried in the ventilation path 7 by the wind generated by driving the fan 2. Then, positive ions and negative ions are blown out from the outlet 6 toward the target object.

  In this way, positive and negative discharge electrodes 25 and 26 are alternately arranged on the front, rear, left, and right, and are periodically discharged, so that positive ions and negative ions are generated uniformly both spatially and temporally. Can achieve a good ion balance. Therefore, the function as a static elimination apparatus can be fully exhibited.

  By the way, when an abnormality occurs in the ion generator 1, ions are not generated or the amount of ions generated is reduced. Further, when the filter is clogged, the air volume by the fan 2 is reduced and the amount of ions detected is reduced. In order to detect such an abnormality, the ion generator includes an ion sensor 33 that detects whether or not ions are generated.

  The ion sensor 33 collects ions and generates a potential according to the amount of collected ions. A detection value corresponding to this potential is output to the control device 32. The detected value is proportional to the amount of ions. In addition, the detection value when the ion sensor 33 detects positive ions has a polarity opposite to the detection value when negative ions are detected.

  The control device 32 determines whether or not ions are generated based on the detection value. When no ions are generated or when the amount of generated ions is small, the detection value is lower than the specified value. When the detected value is lower than the specified value, the control device 32 determines that ions are not generated, and when the detected value is equal to or higher than the specified value, the control device 32 determines that ions are generated. When it is determined that no ions are generated, the control device 32 stops the operation and notifies the abnormality. The user performs measures such as cleaning of the ion generator 1, replacement of the ion generator 1, replacement of the filter, or cleaning.

  All the ion generators 1 are targeted for the detection of ions. Therefore, a plurality of ion sensors 33 are provided. In order to reduce the number of ion sensors 33 used as much as possible, one ion sensor 33 has a plurality of ion generators 1 as detection targets. Therefore, as shown in FIG. 7, the ion sensor 33 is provided between the ion generators 1 arranged in the front-rear direction. The ion sensor 33 is provided on the lower wall 16 of the ventilation path 7 and faces the ion generator 1 with the ventilation path 7 interposed therebetween. Three ion sensors 33 are arranged at equal intervals in the left-right direction.

  Here, in the left-right direction (width direction) of the air outlet 6, wind blows from the ventilation path 7 along the side wall 15 of the air outlet 6 at the left and right ends, but the wind is likely to be disturbed by friction with the side wall 15. . For this reason, the ion balance is uniform in the middle portion in the left-right direction where the wind is not disturbed, but the ion balance may be lost in the end portion. In view of this, the air outlet 6 is provided with a guide unit that joins ions blown from the intermediate portion in the width direction to ions blown from the end portion in the width direction.

  The guide portion is configured by the louver 21 on the end side in the width direction and the side wall 15 of the air outlet 6. As shown in FIG. 5, two louvers 21 are provided in the left-right direction, and each louver 21 corresponds to a louver on the left and right ends. Each louver 21 is disposed so as to face between the ion generators 1 adjacent in the left-right direction. The left and right louvers 21 are provided obliquely with respect to the blowing direction so that the downstream end approaches the side wall 15. In addition, the left and right side walls 15 of the air outlet 6 facing the louver 21 are parallel to the blowing direction. As described above, the arrangement of the ventilation path 7, the fan 2, the discharge electrodes 25 and 26 of the ion generator 1, and the louver 21 is symmetrical.

  Ions generated from the ion generator 1 are carried in the ventilation path 7 by the air blown by the fan 2, and are blown out from the outlet 6 while the air direction is controlled by the louver 21. Since the same amount of positive ions and negative ions are generated, ions are blown forward while spreading evenly in the middle portion in the left-right direction. Therefore, the distribution of positive ions and negative ions is uniform in the middle part, and the ion balance is good.

  As shown in FIG. 5, some of the uniformly spread ions are blown out by the louver 21 so as to approach the end side. At the end in the left-right direction, the ions are blown out forward, but the direction of the air blowing is changed by the wind guided by the louver 21 so as to approach the end. The ions blown out along the side wall 15 of the blowout port 6 merge with the ions brought from the intermediate portion and are blown out to the left and right.

  Thereby, even if the balance of ions blown out from the end portion is lost, balanced ions are blown from the intermediate portion, so that the ion balance is improved by mixing ions. Therefore, ions are blown out in a well-balanced manner throughout the left-right direction. Positive ions and negative ions are uniformly distributed, and air blowing suitable for neutralizing a target object can be realized.

(Second Embodiment)
A cross flow fan is used as the fan 2 of the ion generator. As shown in FIG. 8, the cross flow fan is configured by connecting a plurality of impellers 10. Adjacent impellers 10 are partitioned by a partition plate. Therefore, the wind speed distribution of the fan 2 appears for each impeller 10. The wind speed increases at the center of each impeller 10 in the left-right direction. Therefore, the discharge electrodes 25 and 26 of the ion generator 1 are positioned based on the wind speed distribution. Other configurations are the same as those in the first embodiment.

  The discharge electrodes 25 and 26 are arranged in accordance with a position where the wind speed of the fan 2 is maximum. That is, the positive discharge electrode 25 or the negative discharge electrode 26 in the front row and the rear row are positioned on a straight line passing through the center of the impeller 10 in the left-right direction. Here, in the left-right direction, the discharge electrodes 25 and 26 are arranged at equal intervals. The interval between the adjacent discharge electrodes 25 and 26 and the axial length of the impeller 10 are the same.

  A strong wind blows around the discharge electrodes 25 and 26. Ions generated from the discharge electrodes 25 and 26 are blown far away by a strong wind. Thereby, balanced ions can be blown out to a range far from the ion generator. Even if the wind speed is lowered, ions can be blown out to a predetermined range. Compared with the conventional fan, the rotation speed of the fan 2 can be reduced, and power consumption can be reduced.

(Third embodiment)
In the ion generator, electrical components such as a control device 32 and a power supply device are housed in the housing 3. The electrical component is mounted on the circuit board, and the circuit board is covered with the board cover and installed in the housing 3. By the way, the fan 3 is housed in the housing 3 and the ventilation path 7 is formed. Therefore, in the miniaturized housing 3, the installation space for the electrical components covered by the board cover is limited.

  In the ion generator of the present embodiment, the electric parts 40 can be installed in a limited space by sharing the parts. As shown in FIG. 9, the electrical component 40 is mounted on a circuit board 41. The circuit board 41 is provided with a terminal block 42 for connecting a power cable.

  As shown in FIG. 4, the circuit board 41 is disposed in a housing space 43 formed between the lower corner of the housing 3 and the curved ventilation path 7 in the rear part of the housing 3. The circuit board 41 is covered with a board cover 44. The substrate cover 44 is formed of an electrically insulating and flame retardant synthetic resin. The board cover 44 is disposed between the circuit board 41 and the ventilation path 7. Other configurations are the same as those in the first and second embodiments.

  As shown in FIG. 10, the substrate cover 44 is used as a part of a member that forms the ventilation path 7. That is, the upper surface of the substrate cover 44 is formed to be curved in accordance with the lower wall 16 that forms the ventilation path 7. An opening 45 is formed in the curved portion of the lower wall 16, and a raised step 46 is provided on the upper surface of the substrate cover 44. The step 46 is fitted into the opening 45 of the lower wall 16, and the upper surface of the substrate cover 44 is in close contact with the back surface of the lower wall 16. The surface of the stepped portion 46 and the surface of the lower wall 16 are flush with each other, and do not serve as blowing resistance.

  Thus, by sharing the substrate cover 44, a part of the lower wall 16 becomes unnecessary, and the material of this part can be saved. And since the board | substrate cover 44 is made into the shape according to the shape of the ventilation path 7, a useless clearance gap cannot be made between the ventilation path 7 and the board | substrate cover 44, and space saving can be achieved.

  As shown in FIG. 4, the circuit board 41 is screwed to a boss 50 projecting from the bottom surface of the housing 3, and the terminal block 42 is placed on the receiving table 51. The substrate cover 44 is provided with reinforcing ribs 52. The rib 52 is formed downward from the upper surface of the substrate cover 44. The rib 52 has a function of fixing the terminal block 42. The terminal block 42 is formed so as to open toward the rear surface, and the air volume switch 31 is provided.

  When the substrate cover 44 is attached to the housing 3, the rib 52 contacts the front surface of the terminal block 42. When the power cable is attached to or detached from the connector provided on the terminal block 42, the terminal block 42 is pushed. Since the rib 52 supports the terminal block 42, the terminal block 42 does not move. It is possible to prevent an unnecessary load due to vibration or the like from being applied to the circuit board 41. Thereby, disconnection on the circuit board 41, peeling of components, and the like can be prevented.

(Fourth embodiment)
When an ion generator is used as a static eliminator, it is used in certain situations, such as a factory production line. At this time, the air volume of the ion generator is set according to the target object. When the ion generator is installed, the position and angle of the ion generator are adjusted. At this time, the air volume switch 31 is operated so as to achieve the set air volume. The air volume is not changed during the operation of the ion generator. Therefore, it is necessary to prevent the air volume switch 31 from being operated during operation. Therefore, the air volume switch 31 is provided at a position that is not visible to the human eye. Other configurations are the same as those of the first, second, and third embodiments.

As shown in FIG. 4, the air volume switch 31 is provided at the rear portion of the housing 3. The air volume switch 31 is attached to the terminal block 42, and the terminal block 42 is disposed in the accommodation space 43 in the housing 3. An opening 53 leading to the accommodation space 43 is formed on the rear surface of the housing 3, and a lid 54 that closes the opening 53 is provided to be openable and closable. When the air volume switch 31 faces the opening 53 and the lid 54 is opened, the air volume switch 31 appears and the air volume switch 31 can be operated. During use of the ion generator, the operation switch 30 provided on the front surface of the housing 3 is operated to turn the operation on and off. During this time, the air volume switch 31 is not operated. Thus, since the air volume switch 31 is not visible from the outside, it is possible to prevent the air volume switch 31 from being erroneously operated. The function as a static eliminator can be maintained, and the yield of the target object is improved.

  As described above, the ion generator of the present invention includes the ion generator 1 that generates ions by discharge, and the fan 2 that discharges the ions generated in the ventilation path 7 to the outside from the outlet 6 by blowing. The outlet 6 is provided with a guide unit that joins ions blown from the intermediate portion in the width direction to ions blown from the end portion in the width direction. As a result, even if ions out of balance are blown out from the end side, balanced ions are attracted from the intermediate part, and the ion balance on the end side can be improved.

  The blower outlet 6 is provided with a plurality of louvers 21 along the width direction, and is provided so that the louver 21 on the end portion side in the width direction and the side wall 15 of the blower outlet 6 approach toward the downstream side in the blowing direction. The guide unit is configured by the above. By such a guide portion, the ions on the end side and the ions on the intermediate portion can be mixed together.

  The louver 21 is provided obliquely so that the tip of the louver 21 located at the end in the width direction approaches the side wall 15. The side wall 15 of the blower outlet 6 is formed in parallel with the blowing direction. Thereby, the ion blown out can be guided so that a balanced ion may spread from the intermediate part to the end part side.

  The ion generator 1 includes a positive discharge electrode 25 for generating positive ions and a negative discharge electrode 26 for generating negative ions. The positive discharge electrodes 25 and the negative discharge electrodes 26 are alternately arranged in the width direction. The fan 2 is a cross flow fan having a plurality of impellers 10, and the center in the axial direction of the impeller 10 faces the discharge electrodes 25 and 26. Thereby, ions generated from the discharge electrodes 25 and 26 can be blown out with a strong wind.

  Further, the ion generator of the present invention includes an ion generator 1 that generates ions by discharge, a fan 2 that discharges ions generated in the ventilation path 7 to the outside from the air outlet 6 by air blowing, the ion generator 1, and A housing 3 that houses the fan 2, a circuit board 41 on which an electrical component 40 for operating the ion generator is mounted, and a board cover 44 that covers the circuit board 41 are housed in the housing 3. A part of the ventilation path 7 is formed. Thereby, a member can be reduced and the space saving of the housing 3 can be achieved.

  An opening 45 is formed in the lower wall 16 of the ventilation path 7, and a part of the upper surface of the substrate cover 44 is fitted into the opening 45. Thereby, an unnecessary space is not formed between the ventilation path 7 and the substrate cover 44.

  The ion generator of the present invention includes an ion generator 1 that generates ions by discharge, a fan 2 that discharges ions generated in the ventilation path 7 to the outside from the air outlet 6 by air blowing, and the ion generator 1 and the fan 2. And an air volume switch 31 that changes the air volume of the fan 2, and the air volume switch 31 is provided in the housing 3. Thereby, it can prevent that the air volume switch 31 is operated accidentally.

  An operation switch 30 is provided on the front surface of the housing 3, an air volume switch 31 is provided on the circuit board 41, an accommodation space 43 for accommodating the circuit board 41 is provided on the rear part of the housing 3, and an accommodation space is provided on the rear surface of the housing 3. 43 is formed, the air volume switch 31 faces the opening 53, and a lid 54 for opening and closing the opening 53 is provided. Thereby, the air volume switch 31 can be kept invisible.

  In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of the present invention. The ion generator may be mounted on an electric device such as an air conditioner, an air purifier, a dehumidifier, a humidifier, a refrigerator, a vacuum cleaner, a washing machine, a lighting device, a fan heater, or an image processing device. .

  As shown in FIG. 11, three or more ion generators 1 may be arranged in the left-right direction. At this time, the louver 21 is provided at a position facing each other between the ion generators 1. The left and right end louvers 21 are provided obliquely, and the left and right intermediate louvers 21 are provided parallel to the blowing direction.

  As shown in FIG. 12, the side wall 15 of the blower outlet 6 which comprises a guide part is provided diagonally with respect to the ventilation direction so that the downstream front-end | tip may approach the intermediate part of the left-right direction. The louver 21 at the end is provided obliquely. The ions blown out along the side wall 15 of the blower outlet 6 are moved toward the middle part, mixed with ions coming from the middle part by the louver 21, and blown out to the left and right. Ion balance on the end side is improved by mixing unbalanced ions on the end side with ions with good balance without spreading to the left and right.

DESCRIPTION OF SYMBOLS 1 Ion generator 2 Fan 6 Outlet 7 Ventilation path 15 Side wall 16 Lower wall 17 Upper wall 21 Louver 25 Positive discharge electrode 26 Negative discharge electrode 30 Operation switch 31 Air volume switch 41 Circuit board 42 Terminal block 44 Board cover 52 Rib 53

Claims (6)

An ion generator comprising: a plurality of ion generators that generate ions by discharge; and a fan that discharges ions generated in the ventilation path to the outside from the blowout port by blowing air, wherein the plurality of ion generators are arranged in the width direction. arranged in, the air outlet, is provided along the ion louver width direction to join the ions blown out from the end portion in the width direction is blown out from an intermediate portion in the width direction, louvers are adjacent in the width direction An ion generator, which is disposed so as to face each other between ion generators. An ion generator that includes an ion generator that generates ions by discharge and a fan that discharges ions generated in the ventilation path to the outside from the blowout port by blowing air, to the blowout port from an intermediate portion in the width direction to merge into blown ions that is blown out from the end portion in the width direction ion Le chromatography server is provided along the width direction, the ion generating device generates the positive discharge electrodes and negative ions for generating positive ions A negative discharge electrode, the positive discharge electrode and the negative discharge electrode are alternately arranged in the width direction, and the fan is a cross-flow fan having a plurality of impellers, and the axial center of the impeller There features and to Louis on generator to face the discharge electrodes. The ion generator according to claim 1 or 2, wherein the louver on the end portion side in the width direction and the side wall of the air outlet are provided so as to approach toward the downstream side in the blowing direction. The ion generator according to any one of claims 1 to 3 , wherein the louver is provided obliquely so that the tip of the louver located at the end in the width direction approaches the side wall. The ion generator according to any one of claims 1 to 4 , wherein a side wall of the air outlet is formed in parallel with the blowing direction. The louver is arranged so as to be opposed between discharge electrodes of adjacent ion generators. The ion generator according to any one of claims 1 to 5.

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