JPWO2016035389A1 - Ion generator - Google Patents

Abstract

In the ventilation path (7), the ion generator (1) is arranged back and forth along the blowing direction. The ion sensor (33) is provided between the ion generator (1) located upstream in the blowing direction and the ion generator (1) located downstream, and the ion sensor (33) generates both ions. The device (1) is disposed so as to face the air passage (7). The two ion generators (1) operate alternately. Ions are detected according to the operation timing of the two ion generators (1). Abnormality of a plurality of ion generators can be reliably detected by a small number of ion sensors.

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 check whether such an ion generator is operating normally, the ion generator includes an ion sensor that detects whether or not ions are generated. As described in, for example, Patent Document 1, the ion sensor is disposed on the outlet side of the ion generator arranged in a row in the ventilation path.

JP2013-45700A

  By the way, in order to allow positive ions and negative ions to reach ions in a wide range with a high ion concentration in a balanced manner, ion generators arranged in a horizontal row are arranged side by side along the blowing direction. One ion sensor provided on the leeward side with respect to the plurality of ion generators arranged in this way can detect the presence or absence of ion generation in the ion generator itself. However, the ions generated from each ion generator cannot be detected individually. Therefore, even if an abnormality occurs in the ion generator, it is not possible to specify which ion generator is the ion generator. Therefore, an ion sensor may be provided for each ion generator, but a large number of ion sensors are required, which is not the best measure in terms of cost and space.

  In view of the above, an object of the present invention is to provide an ion generator capable of reliably detecting an abnormality of each ion generator even if a plurality of ion generators are provided by considering the arrangement of ion sensors. .

  An ion generator according to the present invention includes an ion generator that generates ions by discharge and an ion sensor that detects the presence or absence of the generation of ions, and blows out ions generated in a ventilation path from a blower outlet by blowing air. . A plurality of ion generators are arranged side by side along the blowing direction at regular intervals, and the ion sensor is provided between the ion generating device located on the upstream side in the blowing direction and the ion generating device located on the downstream side.

  By providing an ion sensor between ion generators adjacent in the front-rear direction, ions generated from at least two ion generators can be detected by one ion sensor.

  The ion generator has a positive discharge electrode for generating positive ions and a negative discharge electrode for generating negative ions, and is positioned on the downstream side and the discharge electrode of the ion generator located on the upstream side in the blowing direction. The ion sensor has a polarity opposite to that of the discharge electrode of the ion generator, and the ion sensor detects positive ions and negative ions. One ion sensor can detect ions having different polarities.

  The ion generation device is provided so as to face the ventilation path, and the ion sensor is disposed to face the ion generation apparatus with the ventilation path interposed therebetween. Since the ion sensor faces the ion generator, ions that are generated and spread from a plurality of ion generators can be detected.

  The two ion generators arranged along the blowing direction operate alternately, and ions are detected according to the operation timing of the two ion generators. The ion sensor detects ions from the ion generator on the upstream side, and then detects ions from the ion generator on the downstream side. Thereby, the presence or absence of the ion generation of an ion generator can be detected separately.

  After the ion generator starts operation, detection of ions is started. By shifting the operation timing of the ion generator and the detection timing of the ion sensor, the influence of noise at the start of detection can be eliminated.

  According to the present invention, by providing an ion sensor between adjacent ion generators, it is possible to detect the presence or absence of ion generation for a plurality of ion generators with as few ion sensors as possible.

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 where the ion generator is provided Ion generator control block diagram The figure which shows the position of the ion sensor with respect to the ion generator Diagram showing the distribution of ions generated from the ion generator Diagram showing the operation timing of the ion generator and the output of the ion sensor The figure which shows the output of the ion sensor when the detection timing is shifted with respect to the operation timing of the ion generator The figure which shows the range of the position of the ion sensor which can detect ion Diagram showing limit position upstream of ion sensor Diagram showing the operation timing of the ion generator and the output of the ion sensor Diagram showing limit position downstream of ion sensor Diagram showing the operation timing of the ion generator and the output of the ion sensor Diagram showing the operation timing of the ion generator and the output of the ion sensor when the air volume is medium Diagram showing the operation timing of the ion generator and the output of the ion sensor when the air volume is low Diagram showing the operation timing of the ion generator and the output of the ion sensor when the air volume is strong

(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 are spread evenly 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 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.

  As shown in FIG. 8, ions generated from the ion generator 1 are distributed around the discharge electrodes 25 and 26. The ion sensor 33 is positioned within a range where ions generated from the discharge electrodes 25 in the front row and the discharge electrodes 26 in the rear row reach. That is, the ion sensor 33 is provided on the lower wall 16 between the front row discharge electrodes 25 and the rear row discharge electrodes 25 and within a range where ions from the front and rear discharge electrodes 25 and 26 reach. Even if the wind is blowing in the ventilation path 7, the generated ions reach the lower wall 16. Here, the ion sensor 33 is provided at an intermediate position between the discharge electrode 25 in the front row and the discharge electrode 26 in the rear row, that is, at a position equidistant from the discharge electrodes 25 and 26.

  Thus, the presence or absence of ion generation of the two ion generators 1 can be detected by one ion sensor 33. Even if there are many ion generators 1, it is not necessary to provide the same number of ion sensors 33, and the number of ion sensors 33 can be reduced. By reducing the number of ion sensors 33, the installation space for the sensors can be reduced, the size of the ion generator can be reduced, and the cost can be reduced. In addition, since the ion sensor 33 detects ions by collecting the ions, when the number of ion sensors 33 decreases, the number of collected ions decreases. Therefore, the rate at which the generated ions decrease decreases, and the generated ions can be efficiently released into the space.

  Ion generation and ion detection are performed synchronously. As shown in FIG. 9, when the ion generator 1 in the back row operates, ions are generated. Negative ions are generated from the negative discharge electrode 26 and spread in the ventilation path 7 while being carried by the wind. If the ion generator 1 is normal, negative ions gradually reach the ion sensor 33. The detection value output from the ion sensor 33 gradually increases. When the ion sensor 33 outputs a detection value to the control device 32, the control device 32 compares the detection value with a specified value and determines that ions are normally generated. When the ion generator 1 is abnormal, no ions are generated or the amount of ions generated is reduced. The detection value output by the ion sensor 33 is low, and the control device 32 determines that the generation of ions is abnormal.

  When the operation of the ion generator 1 in the rear row stops, the ion generator 1 in the front row starts to operate. Positive ions are generated from the positive discharge electrode 25. The ion sensor 33 outputs a detection value corresponding to the generation of positive ions. The control device 32 determines whether or not ions are generated based on the detection value.

  Here, the detection of the ion sensor 33 is performed according to the operation timing of the ion generator 1. That is, the operation timing of the ion generator 1 and the detection timing of the ion sensor 33 are the same timing. When the operation of the ion generator 1 in the rear row is stopped, the operation of the ion generator 1 in the front row is started. Although the ion sensor 33 continues to operate, the output of the ion sensor 33 is reset when the operation of the ion generator 1 is stopped. The detected value returns to the reference value. The ion sensor 33 immediately detects ions. At this time, since the previously generated ions remain, the detection value is a value based on the previous ions. Next, when the generated ions reach the ion sensor 33, the detected value becomes a value of reverse polarity by the current ions. Note that the control device 32 checks the change in the detected value and makes a determination in consideration of this change. Therefore, it is not erroneously determined whether or not ions are generated.

(Second Embodiment)
In the ion generator of this embodiment, the possibility of erroneous detection is reduced by changing the detection timing of the ion sensor 33 with respect to the operation of the ion generator 1. That is, after the ion generator 1 starts operation, the detection of ions is started. Other configurations are the same as those of the first embodiment.

  As shown in FIG. 10, when the ion generator 1 in the rear row stops operating, the ion sensor 33 resets the output. When the ion generator 1 in the front row starts operating, the ion sensor 33 starts outputting the detection value after a certain time, for example, 10 ms elapses. During a certain time, the ion sensor 33 outputs a reference value. When a certain time elapses, the ion sensor 33 outputs a detection value. As a result, it is possible to prevent the detection value due to previously generated ions from being output, and the possibility of erroneous determination is reduced.

  Note that ion detection may be started in the control device 32. The ion sensor 33 detects ions simultaneously with the operation of the ion generator 1 and outputs a detection value. However, the controller 32 does not make a determination based on the output from the ion sensor 33 for a certain period of time after the operation of the ion generator 1 is started. Judgment is started when a certain time has elapsed. For example, the control device 32 does not receive the output of the ion sensor 33 or invalidates the received detection value until a predetermined time elapses, and does not perform the determination process.

(Third embodiment)
The ion sensor 33 is provided between the ion generator 1 located on the upstream side in the blowing direction and the ion generator 1 located on the downstream side. And what is necessary is just to exist in the range where the ion generated from the ion generator 1 arrives. That is, as shown in FIG. 11, the ion sensor 33 is provided at a position defined by the discharge electrodes 25 in the front row and the discharge electrodes 26 in the rear row. For example, the ion sensor 33 is provided on the lower wall 16 at a position facing the discharge electrode 26 in the rear row. Alternatively, the ion sensor 33 is provided on the lower wall 16 at a position facing the discharge electrode 25 in the front row. These positions are limit positions where ions can be detected. Other configurations are the same as those in the first and second embodiments.

  When the ion sensor 33 is provided on the lower wall 16 so as to face the intermediate position between the discharge electrode 25 in the front row and the discharge electrode 26 in the rear row, the detection value output from the ion sensor 33 is as shown in FIG. become. When the ion sensor 33 is provided at a position facing the discharge electrode 26 in the rear row as shown in FIG. 12, the detection value output from the ion sensor 33 is as shown in FIG. The ion sensor 33 is close to the discharge electrode 26 in the rear row and far from the discharge electrode 25 in the front row. Therefore, although the detection value for the ions generated from the ion generator 1 in the front row is low, the detection value is equal to or higher than the output level at which the presence / absence of the generation of ions can be detected.

  When the ion sensor 33 is provided at a position facing the discharge electrode 25 in the front row as shown in FIG. 14, the detection value output from the ion sensor 33 is as shown in FIG. The ion sensor 33 is close to the discharge electrode 25 in the front row and far from the discharge electrode 26 in the rear row. Therefore, the detection value for the ions generated from the ion generator 1 in the rear row is low.

  Thus, if the ion sensor 33 is provided within a predetermined range in which the generated ions can reach, it is possible to determine whether or not ions are generated in the front and rear ion generators 1. As a result, the ion sensor 33 can be provided at a position where it is not interfered with by other members, the degree of freedom of arrangement of the members in the ion generator is increased, and the ion generator can be downsized.

  By the way, according to the position of the ion sensor 33, the output level of the detection value with respect to the ion generator 1 before and behind differs. Here, in order to improve the accuracy of the determination of the presence / absence of ion generation, the determination criterion for the presence / absence of ions with respect to the detection target ion generator 1 is changed according to the position of the ion sensor 33. That is, the control device 32 changes the prescribed value for the ion generator 1 in the rear row and the prescribed value for the ion generator 1 in the front row. For example, when the ion sensor 33 is at the upstream limit position shown in FIG. 12, the prescribed value for the ion generator 1 in the rear row is set higher than the prescribed value for the ion generator 1 in the front row. When the ion sensor 33 is located at the downstream limit position shown in FIG. 14, the prescribed value for the ion generator 1 in the front row is set higher than the prescribed value for the ion generator 1 in the rear row.

  When the ion sensor 33 is installed, the position of the ion sensor 33 is registered in the control device 32. When the ion generator is operated, the control device 32 confirms the position of the ion sensor 33. And the control apparatus 32 checks whether the ion generator 1 which is operate | moving is a back row or a front row, and switches a regulation value. The control device 32 sets a specified value according to the ion generator 1 in operation, and determines whether or not ions are generated based on the specified value. Thereby, even if the output level of the detection value is low, the amount of generated ions can be recognized correctly. Therefore, it is possible to accurately determine whether or not ions are generated.

(Fourth embodiment)
The presence or absence of ion detection is performed during operation of the ion generator. When the fan 2 is driven and wind is flowing through the air passage 7, the ion generator 1 operates to generate ions. The air volume can be switched. Even if the amount of ions generated is the same, the amount of ions reaching the lower wall 16 differs depending on the air volume. As the air volume increases, more ions are blown away by the wind in the ventilation path 7. Therefore, when the air volume is strong, the amount of ions reaching the ion sensor 33 is smaller than when the air volume is weak. Therefore, the control device 32 changes the criterion for the presence or absence of ion detection according to the air volume. Other configurations are the same as those in the first to third embodiments.

  The ion sensor 33 is in the position shown in FIG. The air volume can be switched between three levels of strong, medium and weak. When the air volume is medium, the detection value of the ion sensor 33 gradually increases as shown in FIG. At this time, there is no difference in the detection value in the ion generator 1 before and behind. When the air volume is weak, the detection value of the ion sensor 33 rapidly increases as shown in FIG. 17, and is saturated at the maximum value. At this time, there is no difference in the detection value in the ion generator 1 before and behind. When the air volume is strong, the detection value of the ion sensor 33 gradually increases as shown in FIG. At this time, the detection value in the ion generator 1 in the front row is lower than the detection value in the ion generator 1 in the rear row.

  When the ion generator is operated, the control device 32 confirms the air volume and sets a prescribed value according to the air volume. The specified value becomes lower as the air volume increases. And the control apparatus 32 judges the presence or absence of ion generation based on the set prescribed value. Therefore, it is possible to correctly determine whether or not ions are generated without being affected by the air volume.

  By the way, when the air volume is strong, a difference occurs in the detected values in the preceding and succeeding ion generators 1. Therefore, the specified value set according to the air volume is corrected according to the operating ion generator 1. The control device 32 checks whether the operating ion generator 1 is the back row or the front row. When the ion generator 1 in the rear row is operating, the specified value is left as it is. When the ion generator 1 in the front row is operating, the specified value is changed to a lower value. The control device 32 determines whether or not ions are generated based on the corrected specified value according to the ion generator 1 in operation. Thereby, even if the air volume is switched, it is possible to accurately determine the presence or absence of ion generation by changing the determination criterion according to the air volume.

  As described above, the ion generator of the present invention includes the ion generator 1 that generates ions by discharge and the ion sensor 33 that detects whether ions are generated, and blows ions generated in the ventilation path 7 by blowing air. It blows out from the blower outlet 6. A plurality of ion generators 1 are arranged at regular intervals along the air blowing direction, and the ion sensor 33 is located between the ion generator 1 located upstream in the air blowing direction and the ion generator 1 located downstream. Provided.

  Thereby, it is possible to detect the presence or absence of ion generation with respect to a plurality of adjacent ion generators 1 with the ion sensor 33 as the center. Moreover, the ion sensor 33 can be provided within a range that is not separated from the two ion generators 1, and the space for providing the ion sensor 33 in the blowing direction does not have to be expanded.

  The ion generator 1 has a positive discharge electrode 25 for generating positive ions and a negative discharge electrode 26 for generating negative ions, and the discharge electrode 25 of the ion generator 1 located upstream in the blowing direction. The discharge electrode 26 of the ion generator 1 located on the downstream side is opposite in polarity, and the ion sensor 33 detects positive ions and negative ions. By using such an ion sensor 33, the ion sensor 33 can be arranged so as to be able to cope with any arrangement of the ion generator 1.

  The ion generator 1 is provided so as to face the ventilation path 7, and the ion sensor 33 is disposed to face the ion generation apparatus 1 across the ventilation path 7. Ions generated from the ion generator 1 travel toward the opposing ion sensor 33 while spreading. Thereby, the range which can arrange | position the ion sensor 33 spreads.

  The two ion generators 1 arranged along the blowing direction operate alternately, and ions are detected according to the operation timing of the two ion generators 1. Thereby, the presence or absence of the ion generation of the ion generator 1 can be detected one by one.

  After the ion generator 1 starts operation, detection of ions is started. Thus, since ions are detected with a delay after the generation of ions, noise such as detection of ions that have been generated first and remain can be eliminated, and detection accuracy can be improved.

  During the blowing, the ion sensor 33 performs detection. Thereby, the presence or absence of ion generation can be detected during operation of the ion generator, and abnormality of the ion generator 1 can be detected. If an abnormality occurs in the ion generator, it can be detected immediately.

  The ion generator includes an ion generator 1 that generates ions by discharge and an ion sensor 33 that detects whether or not ions are generated, and blows out ions generated in the ventilation path 7 from the air outlet 6 by blowing air. A plurality of ion generators 1 are arranged at regular intervals, and the ion sensor 33 is provided between the adjacent ion generators 1. Thereby, it is possible to detect the presence or absence of ion generation with respect to a plurality of adjacent ion generators 1 with the ion sensor 33 as the center.

  The ion generator 1 has discharge electrodes 25 and 26 for generating ions, and the discharge electrode 25 of the ion generator 1 located on the upstream side in the blowing direction and the discharge electrode of the ion generator 1 located on the downstream side. The ion sensor 33 is provided between the upstream discharge electrode 25 and the downstream discharge electrode 26.

  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. .

  The ion generator 1 may be arrange | positioned at 3 or more rows along the ventilation direction. One ion sensor 33 is provided for every two rows. Moreover, you may provide the ion sensor 33 between the ion generators 1 adjacent to the left-right direction. The ion sensor 33 is a sensor that can simultaneously detect positive ions and negative ions. Since the left and right ion generators 1 operate at the same timing, the ions of the two ion generators 1 can be detected at the same timing. Moreover, you may provide the ion sensor 33 in the center of the four ion generators 1 of front and rear, right and left. At this time, the detection timing with respect to each ion generator 1 is shifted in order. Thereby, the four ion generators 1 can be made into a detection target, and the number of the ion sensors 33 can be reduced.

  When blowing is stopped, the ion generator 1 may be operated to perform ion detection. In this case, since the influence of the air blowing on the movement of the generated ions is eliminated, the range in which the ion sensor 33 can be arranged is widened with respect to the ion generator 1.

DESCRIPTION OF SYMBOLS 1 Ion generator 2 Fan 6 Air outlet 7 Ventilation path 15 Side wall 16 Lower wall 17 Upper wall 25 Positive discharge electrode 26 Negative discharge electrode 30 Operation switch 31 Air volume switch 32 Control apparatus 33 Ion sensor

Claims (5)

An ion generator that includes an ion generator that generates ions by discharge and an ion sensor that detects whether ions are generated or not, and blows out ions generated in a ventilation path from an outlet by blowing air. The devices are arranged along the air blowing direction at regular intervals, and the ion sensor is provided between the ion generating device located on the upstream side in the air blowing direction and the ion generating device located on the downstream side. Ion generator.   The ion generator has a positive discharge electrode for generating positive ions and a negative discharge electrode for generating negative ions, and is positioned on the downstream side and the discharge electrode of the ion generator located on the upstream side in the blowing direction. The ion generator according to claim 1, wherein the ion generator has a polarity opposite to that of the discharge electrode of the ion generator, and the ion sensor detects positive ions and negative ions. The ion generator according to claim 1, wherein the ion generator is provided so as to face the ventilation path, and the ion sensor is arranged to face the ion generator across the ventilation path. The two ion generators arranged along the blowing direction operate alternately, and ions are detected according to the operation timing of the two ion generators. The ion generator described. 5. The ion generator according to claim 4, wherein detection of ions is started after the ion generator starts its operation.

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