JP4501571B2 - Filter device for air conditioner and control method for filter device - Google Patents

Description

  The present invention relates to a filter device for an air conditioner and a control method for the filter device.

  A conventional filter device of a general air conditioner is arranged on the front surface of a heat exchanger built in the air conditioner so as to prevent dust from entering the air conditioner body and adhere to it. It was detachably attached to the air conditioner body so that the collected dust could be cleaned by hand, brush, vacuum cleaner or the like.

In addition, in order to facilitate cleaning of the filter device, the filter device includes a drive shaft and a driven shaft provided with a belt-like filter, a servo motor connected to the drive shaft, a brush, and a fan. When the continuous use time reaches a predetermined time, the servo motor is driven to move the belt-shaped filter, dust accumulated on it is removed with a brush, and the removed dust is discharged to the outside with a fan. There is also an air conditioner (see, for example, Patent Document 1).
JP-A-6-74521 (second page, FIG. 1)

  However, in the configuration of the air filter device of the conventional general air conditioner described above, the air filter device is removed from the air conditioner according to the frequency of use of the air conditioner, and the dust adhered by a brush, water washing or a vacuum cleaner, etc. Periodic maintenance of cleaning was necessary. In addition, if periodic maintenance is not performed, dust accumulated in the air filter device increases the airflow resistance of the intake air, significantly lowering the performance of the air conditioner and increasing power consumption. It was.

  In an air conditioner using a belt-shaped air filter, air from the air inlet of the air conditioner passes twice on the front side and the rear side of the air filter. There were problems such as a decrease in performance and an increase in body size.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and is an air conditioner that can easily maintain dust removal without increasing the size, maintain the performance of the air conditioner, and prevent an increase in power consumption. It is an object of the present invention to provide a filter device and a control method for the filter device.

In order to solve the above-described conventional problems, an air conditioner filter device according to the present invention includes an air filter and an air filter in a filter device disposed between a heat exchanger and an inlet of an air conditioner body. A filter frame that supports the air filter, a suction nozzle that sucks dust adhering to the air filter, a drive motor that moves the suction nozzle from one end to the other end of the air filter, and a suction side that communicates with the suction nozzle A suction exhaust device connected to an exhaust duct on the exhaust side, and overrun detection means for detecting an overrun of the suction nozzle at both ends of the moving range of the suction nozzle. By moving the air filter from one end to the other, it becomes possible to automatically perform suction cleaning on the entire surface of the air filter, and the ventilation of the air filter Reduce the anti, it is possible to achieve maintenance of the blowing performance of the air conditioner, and an increase prevention of power consumption. Furthermore, if the overrun detection means detects that the suction nozzle has reached the end of the air filter that does not interfere with the ventilation performance of the air conditioner, the suction nozzle will normally stop. The air blowing performance of the air conditioner will not be affected.

  Further, the control method of the filter device of the present invention is arranged between the heat exchanger of the air conditioner main body and the suction port, the air filter, the filter frame that supports the air filter, and the air filter that is movable. A suction nozzle for sucking dust adhering to the air, driving means for moving the suction nozzle from one end of the air filter to the other end, a suction exhaust device having a suction side communicating with the suction nozzle and connecting an exhaust duct to the exhaust side; In the control method of the filter device, the overrun detection means for detecting the overrun of the suction nozzle is disposed at both ends of the movement range of the suction nozzle, and the movement time from one end of the suction nozzle to the other end is arranged. The drive means is stopped when a predetermined time is exceeded. By moving the suction nozzle from one end to the other end, It is possible to perform entire suction cleaning over automatically, it is possible to maintain the blowing performance of the air conditioner, and an increase prevention of power consumption. Furthermore, if the overrun detection means detects that the suction nozzle has reached the end of the air filter that does not interfere with the ventilation performance of the air conditioner, if the movement of the suction nozzle is stopped, the suction nozzle There is no influence on the air blowing performance of the air conditioner. Further, when the moving time exceeds a predetermined time, it is possible to make a self-diagnosis that some abnormality has occurred in the drive motor or the drive system of the suction nozzle, and to prevent the movement-related parts from being damaged by stopping the drive motor. .

  The filter device for an air conditioner of the present invention can maintain the performance of the air conditioner and prevent an increase in power consumption. In addition, self-diagnosis of the suction nozzle drive system can be performed, and the safety of the filter device can be improved.

  1st invention is a filter apparatus distribute | arranged between the heat exchanger of an air conditioner main body, and an inlet, An air filter, the filter frame which supports the said air filter, It is movable and adheres to the said air filter A suction nozzle for sucking the dust, a drive motor for moving the suction nozzle from one end to the other end of the air filter, and a suction exhaust device having a suction side communicating with the suction nozzle and having an exhaust duct connected to the exhaust side. The overrun detection means for detecting the overrun of the suction nozzle is disposed at both ends of the moving range of the suction nozzle, and the entire suction suction cleaning of the air filter is performed by moving the suction nozzle from one end to the other end. Can be performed automatically, reducing the air resistance of the air filter, maintaining the ventilation performance of the air conditioner, and reducing power consumption. It is possible to achieve a large prevention. Furthermore, if the overrun detection means detects that the suction nozzle has reached the end of the air filter that does not interfere with the ventilation performance of the air conditioner, the suction nozzle will normally stop. The air blowing performance of the air conditioner will not be affected.

  In the second invention, in particular, the movement time from one end to the other end of the suction nozzle of the first invention is limited. When the movement time exceeds the limit value, the drive motor or the suction nozzle is driven. It is possible to self-diagnose that some abnormality has occurred in the system and to take necessary measures.

  The third invention is provided with a drive motor rotation detecting means for detecting the rotation state of the drive motor of the first or second invention, and when the rotation stop of the drive motor is detected, the drive motor is temporarily The drive motor is temporarily reversely driven when parts such as the lead wire or suction hose attached to the suction nozzle are simply caught on the filter frame and the drive motor is stopped. Thus, the movement trouble of the suction nozzle can be easily eliminated, the air filter can be continuously cleaned, and the reliability of the filter device can be improved.

   In the fourth aspect of the invention, in particular, when the reverse drive of the drive motor occurs at least twice during the movement of the suction nozzle in one direction of the third aspect of the invention, the drive motor is stopped. Self-diagnosis of motor abnormality and suction nozzle movement failure, and the drive motor repeatedly applies unnecessary stress to the components of the filter device, preventing them from being damaged or preventing abnormal temperature rise due to lock of the drive motor itself be able to.

In particular, the fifth invention is provided with a drive motor rotation detecting means for detecting the rotation state of the drive motor of the first or second invention, and the rotation stop of the drive motor or the rotation speed of the drive motor is a predetermined rotation speed. When the following state exceeds a predetermined time, the drive motor is stopped.
Predicting abnormal signs in the suction nozzle drive system including the drive motor and repairing them in advance prevents damage to the components and unnecessary temperature rise of the drive motor due to unnecessary stress applied to the components of the filter device by the drive motor can do.

  The sixth invention is arranged between the heat exchanger of the air conditioner main body and the suction port, and sucks the dust that adheres to the air filter, the filter frame that supports the air filter, and is movable. An intake nozzle, a drive means for moving the intake nozzle from one end to the other end of the air filter, and a suction exhaust device having a suction side communicating with the suction nozzle and having an exhaust duct connected to the exhaust side. In the control method, overrun detection means for detecting an overrun of the suction nozzle is arranged at both ends of the movement range of the suction nozzle, and the movement time from one end of the suction nozzle to the other end exceeds a predetermined time. Sometimes, the driving means is stopped, and the suction suction nozzle is moved from one end to the other end to automatically clean the entire surface of the air filter by suction. Ukoto allows, it is possible to achieve maintenance of the blowing performance of the air conditioner, and an increase prevention of power consumption. Furthermore, if the overrun detection means detects that the suction nozzle has reached the end of the air filter that does not interfere with the ventilation performance of the air conditioner, the suction nozzle will normally stop. The air blowing performance of the air conditioner will not be affected. Furthermore, when the movement time exceeds a predetermined time, it is possible to self-diagnose that some abnormality has occurred in the drive motor or the drive system of the suction nozzle and to prevent the movement-related parts from being damaged by stopping the drive motor. it can.

  The seventh invention is provided with drive motor rotation detecting means for detecting the rotation state of the drive motor according to the sixth invention, and when the rotation stop of the drive motor is detected, the drive motor is temporarily reversed. When the drive motor is temporarily stopped when the lead motor attached to the suction nozzle or parts such as the suction hose are simply caught on the filter frame etc. Nozzle movement obstacles can be easily eliminated, air filter cleaning can be continued, and the reliability of the filter device can be improved.

  In the eighth aspect of the invention, in particular, the drive motor is stopped when the reverse drive of the drive motor occurs at least twice during the movement of the suction nozzle in one direction of the seventh aspect of the invention. Self-diagnosis of motor abnormality and suction nozzle movement failure, and the drive motor repeatedly applies unnecessary stress to the components of the filter device, preventing them from being damaged or preventing abnormal temperature rise due to lock of the drive motor itself be able to.

  In particular, the ninth invention is provided with drive motor rotation detecting means for detecting the rotation state of the drive motor of the sixth invention, and the rotation of the drive motor is stopped or the rotation speed of the drive motor is not more than a predetermined rotation speed. Is stopped when the predetermined time has passed, the abnormal signs of the suction nozzle drive system including the drive motor are predicted and repaired in advance so that the components of the filter device by the drive motor can be repaired. It is possible to prevent the destruction of the parts due to unnecessary stress and the abnormal temperature rise of the drive motor itself.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
Below, the filter apparatus of the air conditioner in the 1st Embodiment of this invention is demonstrated using FIGS. 1-4.

  FIG. 1 is a perspective view of a filter device of an air conditioner in the present embodiment.

  In FIG. 1, a filter device 1 is disposed between a suction port (not shown) of an air conditioner body (not shown) and a built-in heat exchanger (not shown). 2, an air filter 5, a movable suction nozzle 4 that sucks dust attached to the air filter 5, a telescopic suction hose 3 having one end connected to the suction nozzle 4, and the other end of the suction hose 3 A connected suction / exhaust device 6, an exhaust duct 7 having one end connected to the exhaust side of the suction / exhaust device 6 and the other end opened to the outside, a control device 16 for controlling the operation of the suction / exhaust device 6 and the like, a filter Overrun detection means 15 is provided at the left and right ends of the apparatus 1 for detecting overrun when the suction nozzle 4 is moved. Reference numeral 9 denotes a drive motor that moves the suction nozzle 4 to the left and right via a drive wire 8 connected to the suction nozzle 4. The suction nozzle 4 is provided with a suction port 4 a that opens to face the upstream surface of the air filter 5.

  The operation of the filter device 1 configured as described above will be described.

  After the operation of the air conditioner main body is stopped, the suction / exhaust device 6 starts to operate and starts to suck air from the suction port 4 a of the suction nozzle 4 installed in the suction hose 3. Then, the suction nozzle 4 located at one end of the air filter 5 is moved in the direction of arrow A by the drive wire 8 connected to the drive motor 9, and dust adhering to the air filter 5 is sucked into the suction nozzle 4. It is sucked out from the mouth 4a and discharged to the outside through the suction hose 3, the suction exhaust device 6, and the exhaust duct 7.

  The suction nozzle 4 moves until it is detected by the overrun detection means 15 that it reaches the opposite one end. When reaching the opposite one end, the control device 16 stops the suction / exhaust device 6 and the drive motor 9, and the entire cleaning operation of the air filter 5 is completed.

 Further, when the suction / exhaust device 6 is re-operated by the control device 16 and the drive motor 9 is rotated in the reverse direction, the suction nozzle 4 moves in the direction to return to the initial position and reaches the opposing overrun detection means 15. Until the entire surface of the air filter 5 is cleaned. Cleaning of the entire surface of the air filter may be performed on the outward path, only on the return path, or continuously on the outward path / return path. The air filter 5 may be cleaned before and after the operation if the air conditioner body is stopped.

  FIG. 2 is a block diagram showing control of the filter device in the present embodiment.

  The control device 16 performs drive control of the drive motor 9 and the suction / exhaust device 6 that move the suction nozzle 4 as described above. The overrun detection means 15 may be a contact switch such as a limit switch or a non-contact switch such as a photo sensor, and outputs a signal to the control device 16 when the suction nozzle 4 reaches the left and right ends. In addition, the control device 16 includes a timer 13 for measuring the moving time from one end of the suction nozzle 4 to the other end.

As described above, according to the present embodiment, by providing the overrun detection means 15 at both moving ends of the suction nozzle 4, the entire surface of the air filter 5 is cleaned from one end so that there is no remaining cleaning. The other end, that is, from the right end to the left end can be automatically and reliably performed. Further, since the overrun detection means 15 can prevent the suction nozzle 4 from moving more than necessary, it is possible to prevent unnecessary force from being applied to the filter frame 2 due to the overrun of the suction nozzle 4 and to protect the filter device 1. Can be planned.

  Moreover, the overrun detection means 15 is arrange | positioned at the time of completion | finish of cleaning of the air filter 5, and the suction nozzle 4 can be accommodated in the place 17 which does not interfere with the ventilation performance of an air conditioner.

  FIG. 3 shows the variation in the movement time until the arrival signal of the suction nozzle 4 is obtained by the overrun detection means 15 at the opposite position from the start of the movement of the suction nozzle 4. The average value of the time is 100%. The moving time from one end of the suction nozzle 4 to the other end is approximately within ± 20%. From this, a predetermined time, for example, the moving time, after the suction nozzle 4 starts moving. If a signal reaching the suction nozzle 4 cannot be obtained by the opposing overrun detection means 15 even after 200% or more of the average value has elapsed, some abnormality has occurred in the drive motor 9 or the drive system of the suction nozzle 4 You can self-diagnose.

  FIG. 4 shows the temperature rise characteristics when the drive motor 9 is restrained. At time t0, a temperature corresponding to the determined insulation level is reached. The rise in temperature causes not only the insulation deterioration of the coil of the drive motor 9 but also the deformation of the peripheral members due to deterioration of the internal grease and heat. Depending on the type of the drive motor 9, there is a possibility of ignition and smoke generation. From these facts, the time limit from when the suction nozzle 4 starts to move until the opposing overrun detection means 15 issues the arrival signal of the suction nozzle 4 is sufficiently smaller than the time t0 and sufficiently larger than the maximum value of the moving average time. It is preferable to set the time.

  As described above, according to the filter device 1 in the present embodiment, the dust attached to the entire surface of the air filter 5 by operating the drive motor 9 and the suction / exhaust device 6 without attaching or detaching the air filter 5. However, since it is sucked by the moving suction nozzle 4 and discharged to the outside of the room, the maintenance is very easy, the performance of the air conditioner can be maintained, and the increase in power consumption can be prevented.

  Moreover, in this Embodiment, since it is not necessary to form the air filter 5 in a belt form, an air conditioner does not enlarge.

  In addition, by setting a limit on the moving time of the suction nozzle 4, it is possible to perform a self-diagnosis of the drive system of the suction nozzle 4 including the drive motor 9, and when it is determined to be abnormal, the drive motor 9 is stopped, The protection and safety of the drive motor 9 and the filter device 1 can be ensured, and countermeasures can be taken.

(Embodiment 2)
FIG. 5 is a control block diagram of the filter device according to the second embodiment of the present invention. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  The present embodiment is provided with a drive motor rotation detection means 18 for detecting the rotation state of the drive motor 9 directly or indirectly. As the detection means, a hall element is used as the rotor of the drive motor 9. A method for measuring rotation, a method for measuring the amount of current flowing through the drive motor 9, and the like are listed.

  Possible causes for the suction nozzle 4 to stop during movement include twisting / twisting of the suction hose 3, catching of the lead wire 12 on the filter frame 2 and mechanical parts of the air conditioner, and pinching of dust. Some of these causes can be solved by moving the suction nozzle 4 in the direction opposite to the moving direction.

  FIG. 6 is a timing chart from the start to the end of cleaning of the air filter 5. From the top, the rotation direction of the drive motor 9, the detection content of the drive motor rotation detection means, the operating state of the suction / exhaust device 6, and the overrun detection The detection state of the means 15 is shown.

  When the drive motor 9 is moving forward and the suction nozzle 4 is moving forward, the suction nozzle 4 stops for some reason, and when the drive motor rotation detection means 18 detects the stop of the drive motor 9, the drive motor 9 is temporarily stopped. It is made to reversely drive and return. Thus, if the cause of the suction nozzle 4 stopping during movement can be eliminated, the entire cleaning of the air filter 5 is continued.

  As described above, according to the present embodiment, the provision of the drive motor rotation detecting means 18 enables self-diagnosis of abnormality in the moving system of the drive motor 9 and the suction nozzle 4. Further, when the drive motor 9 is stopped during the entire cleaning of the air filter 5, the suction hose 3 is twisted or twisted, and the lead wire 12 is caught in the filter frame 2 or the air conditioner mechanism parts and the dust is caught. Thus, by performing movement control such as temporarily moving the suction nozzle 4 in the opposite direction, the reliability of the filter device 1 can be improved.

(Embodiment 3)
FIG. 7 shows a timing chart from the start of cleaning of the air filter device to the self-diagnosis / cleaning interruption in the third embodiment of the present invention.

  Similarly to FIG. 6, the rotation direction of the drive motor 9, the detection state of the drive motor rotation detection unit 18, the operation state of the suction / exhaust device 6, and the detection state of the overrun detection unit 15 are shown from above.

  To prevent the suction nozzle 4 from stopping while moving, the suction hose 3 is twisted or twisted, the lead wire 12 is caught in the filter frame 2 or the air conditioner mechanism parts, or the dust is trapped. In some cases, it is not possible to solve the problem by proceeding in the direction opposite to the moving direction. Therefore, for example, if the stop state of the drive motor 9 continues even if the drive motor 9 is reversed three times as shown in FIG. 7, it is determined that an abnormality has occurred in the moving system of the drive motor 9 and the suction nozzle 4. At this time, the entire cleaning of the air filter 5 is stopped. Thereafter, the suction nozzle 4 may be moved in the direction opposite to the initial movement direction, that is, to the original position. Thereby, the ventilation resistance by the suction nozzle 4 of the air conditioner is minimized. Further, the above restriction and the movement time restriction of the suction nozzle 4 may be combined and controlled.

  As described above, according to the present embodiment, the drive motor rotation detecting means 18 for detecting the rotation state of the drive motor 9 is provided, and the suction nozzle 4 is moved from the right end to the left end or from the left end to the right end. In this case, when the reverse rotation of the drive motor 9 occurs at least twice, the drive motor 9 is stopped to prevent the components from being damaged and the drive motor 9 from being burned out. The cleaning operation can be interrupted.

(Embodiment 4)
FIG. 8 shows a timing chart from the start of cleaning of the air filter device to self-diagnosis and cleaning interruption in the fourth embodiment of the present invention.

Similarly to FIG. 6, the rotation direction of the drive motor 9, the detection state of the drive motor rotation detection unit 18, the operation state of the suction / exhaust device 6, and the detection state of the overrun detection unit 15 are shown from above.

  In this embodiment, after the movement of the suction nozzle 4 is started, the drive motor 9 is stopped by twisting / twisting of the suction hose 3, catching of the lead wire 12 on the filter frame 2 or mechanical parts of the air conditioner, or pinching of dust. In this state, the drive motor is stopped when a predetermined time t1 elapses when the state or the state in which the rotational speed of the drive motor 9 is equal to or less than a predetermined value. There is also a method of performing self-diagnosis by detecting that the motor load has become abnormally large due to the magnitude of the current flowing through the drive motor 9.

  As described above, according to the present embodiment, the drive motor rotation detection means 18 for detecting the rotation state of the drive motor 9 that moves the suction nozzle 4 is provided, and the rotation of the drive motor 9 is stopped or the rotation speed is less than a predetermined number of rotations. When this condition occurs for a predetermined time, the drive motor 9 is stopped to interrupt the unnecessary entire cleaning operation of the air filter 5, and the suction hose 3, the lead wire 12, the filter frame 2, and the mechanical parts of the air conditioner Can be prevented.

  The filter device of the present invention can automatically suck and discharge dust adhering to the air filter without increasing the size of the mounted air conditioner, and can perform self-diagnosis with high safety and reliability. Thus, the present invention can be widely applied to various blowers using air filters that collect dust, air purifiers, ventilators, and the like.

The perspective view of the filter apparatus in Embodiment 1 of this invention The figure which shows the block diagram of the same filter device Explanatory drawing which shows the variation in the movement time of the suction nozzle of the filter device Temperature rise characteristic diagram in the drive motor restraint test of the filter device The figure which shows the block diagram of the filter apparatus in Embodiment 2 of this invention Timing chart of the operation of each part of the filter device Timing chart of operation of each part of filter device in embodiment 3 of the present invention Timing chart of operation of each part of filter device in embodiment 4 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filter apparatus 2 Filter frame 3 Suction hose 4 Suction nozzle 4a Suction port 5 Air filter 6 Suction exhaust apparatus 7 Exhaust duct 9 Drive motor 15 Overrun detection means 16 Control apparatus 18 Drive motor rotation detection means

Claims (8)

In a filter device disposed between a heat exchanger and an inlet of an air conditioner main body, an air filter, a filter frame that supports the air filter, and a suction that is movable and sucks dust adhering to the air filter A nozzle, a drive motor for moving the suction nozzle from one end to the other end of the air filter, and a suction exhaust device having a suction side connected to the suction nozzle and connected to an exhaust duct on the exhaust side. An air conditioner filter device, characterized in that overrun detection means for detecting overrun of the suction nozzle is arranged at both ends of the range, and a restriction is imposed on the moving time from one end of the suction nozzle to the other end . The drive motor rotation detecting means for detecting a rotational state of the drive motor is provided, when the rotation stop of the drive motor is detected, according to claim 1, characterized in that temporarily reverse driving the drive motor Air conditioner filter device. 3. The filter device for an air conditioner according to claim 2 , wherein the drive motor is stopped when the reverse drive of the drive motor occurs at least twice during the movement of the suction nozzle in one direction. Drive motor rotation detection means for detecting the rotation state of the drive motor is provided, and when the rotation of the drive motor is stopped or the rotation speed of the drive motor is below a predetermined rotation speed exceeds a predetermined time, the drive motor is The filter device according to claim 1, wherein the filter device is stopped. An air filter, a filter frame that supports the air filter, a movable suction nozzle that sucks dust adhering to the air filter, and the suction filter disposed between the heat exchanger of the air conditioner body and the suction port; In the control method of a filter device, comprising: a drive motor that moves the suction nozzle from one end to the other end of the air filter; and a suction exhaust device that has a suction side connected to the suction nozzle and an exhaust duct connected to the exhaust side. Overrun detection means for detecting overrun of the suction nozzle is disposed at both ends of the movement range of the nozzle, and when the movement time from one end of the suction nozzle to the other end exceeds a predetermined time, the drive means is Control method of the filter device that is to be stopped The drive motor rotation detecting means for detecting a rotational state of the drive motor is provided, when the rotation stop of the drive motor is detected, according to claim 5, characterized in that temporarily reverse driving the drive motor Control method of filter device. 7. The method of controlling a filter device according to claim 6 , wherein the drive motor is stopped when the reverse drive of the drive motor occurs at least twice during the movement of the suction nozzle in one direction. Drive motor rotation detection means for detecting the rotation state of the drive motor is provided, and when the rotation of the drive motor is stopped or the rotation speed of the drive motor is below a predetermined rotation speed exceeds a predetermined time, the drive motor is The method for controlling a filter device according to claim 5 , wherein the method is stopped.

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