JP3134620B2 - Filter device for air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device for an air conditioner, and to a measure for detecting the end of unwinding of a filter.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Application Laid-Open No. 4-57217, a filter device of an air conditioner is disposed at a return port of the air conditioner, and a filter for cleaning suction air. When the light transmission amount of the filter is reduced by providing the light emitting unit and the light receiving unit, the filter is moved from the unwinding side to the winding side by a predetermined amount by a predetermined amount, and the predetermined filtering efficiency is constantly maintained, assuming that dust is accumulated. There is something we do.

[0003]

In the above-described filter device for an air conditioner, a light emitting unit and a light receiving unit are provided.
The amount of accumulated dust is detected. However, in the above-described filter device, there is no means for detecting the end of unwinding of the filter, so that there is a problem that the end of unwinding cannot be detected. In particular, for the user, whether or not the unwinding of the filter has been completed cannot be determined unless the casing is opened, and if the unwinding of the filter is not notified,
The use of the filter with reduced filtration efficiency is continued, the filter is not replaced with a new roll filter, the function of the filter is not sufficiently exhibited, the air resistance is increased, and the air conditioning efficiency is sometimes reduced.

[0004] The present invention has been made in view of such a point, and prevents a decrease in air-conditioning efficiency by keeping the filtration efficiency of a filter constant.

[0005]

Means for Solving the Problems In order to achieve the above-mentioned object, a measure taken by the present invention is to detect the end of unwinding of the filter. More specifically, as shown in FIG. 10, means taken by the invention according to claim 1 firstly includes a filter casing (3) attached to the air conditioner (1).
An unwinding portion (33) of the roll filter (4) is formed at one end and a winding portion (34) of the roll filter (4) is formed at the other end, and the unwinding portion of the filter casing (3) is formed. (33)
The roll core (42) houses the roll filter (4) formed by winding the filter (41), while the filter casing
In the winding section (34) of (3), a roll core (42) for winding the filter (41) is housed. And, between the unwinding portion (33) and the winding portion (34) in the filter casing (3) is formed as a filter traveling portion (35) through which air can flow,
It is premised on a filter device of an air conditioner in which the filter (41) is moved by a predetermined feed amount from the unwinding section (33) to the winding section (34) to filter the flowing air. Further, an end pin (45) is provided at an end of the roll filter (4) on the roll core (42) side of the filter (41). In addition, there is provided end detection means (L2) for detecting the end of unwinding of the filter (41) when the end pin (45) comes into contact with the filter traveling portion (35) of the filter casing (3) and comes into contact with the end pin (45). Configuration.

Further, the means adopted by the invention according to claim 2 is the end pin (45) and the end detection means (L
Instead of 2), the filter running part of the filter casing (3)
(35) is provided with a guide roller (7e) that rotates in synchronization with the travel of the filter (41), counts the rotation of the guide roller (7e), and calculates the rotation speed and a preset end value. In comparison, an end detecting means (56) for detecting the end of unwinding of the filter (41) when the rotation speed reaches the end value is provided. The means adopted by the invention according to claim 3 is a roll filter (4) housed in the unwinding part (33) instead of the end pin (45) and the end detection means (L2) of the invention of claim 1. When the filter (41) extends in the normal direction of the roll core (42), the filter (41) comes into contact with the end detection means (L3) for detecting the end of unwinding of the filter (41). And The means adopted by the invention according to claim 4 is that, when the filter (41) reaches a predetermined feed amount, the filter (41) is replaced with the end pin (45) and the end detection means (L2) of the invention of claim 1. ) Is provided, and the feed detecting means (L1) does not output a stop signal within a predetermined time set before winding the filter (41). ), An end detection means (57) for detecting the end of unwinding is provided. Further, the means adopted by the invention according to claim 5 is the invention according to claim 1, wherein the feed detection means (L1) which outputs a stop signal of the filter (41) when the filter (41) reaches a predetermined feed amount, The feed detecting means (L1) is the filter (41)
And a failure detecting means (55) for detecting a winding failure of the filter (41) if a stop signal is not output within a predetermined time set at the time of winding.

[0007]

According to the above construction, according to the first aspect of the present invention,
When the air sucked into the air conditioner (1) passes through the filter casing (3), the air passes through the filter (41) and is filtered. For example, when the operation time of the fan reaches a predetermined time, the filter (41) is wound by the winding unit (34) and moves by a predetermined feed amount. In this roll filter (4), the end pin (45) is connected to the roll core in the filter (41).
This end pin (45) is provided at the end on the (42) side.
Is the roll core (4) in the roll filter (4) before use.
In this state, the end detecting means (L2) does not detect the end of winding, and then the filter (41) is sequentially unwound, and the unwinding of the filter (41) is performed. When the end is completed, the end pin (45) unwinds from the roll core (42), and the end detecting means (L2) detects the unwinding of the filter (41). I do. By turning on the display lamp, a service person or the like replaces the roll filter (4).

According to the second aspect of the present invention, the guide roller (7e) rotates in synchronization with the traveling of the filter (41), and the end detecting means (56) counts the number of rotations of the guide roller (7e). When the number of revolutions reaches a preset end value, the unwinding of the filter (41) is detected. That is, since the length of the filter (41) is determined, the guide roller
The end of unwinding is detected based on the number of rotations of (7e). In the invention according to claim 3, the filter (41) is provided with a roll core.
When the filter (41) extends in the normal direction to (42), the end detection means (L3) comes into contact with the end detection means (L3), and the end detection means (L3) detects unwinding. That is, the filter (41) is normally unwound in a tangential direction with respect to the roll core (42), but when the unwinding is completed, the filter (41) extends in the normal direction from the roll core (42).
The end detecting means (L3) detects the end of unwinding from the displacement between the tangential direction and the normal direction. In the invention according to claim 4,
The feed amount of the filter (41) is controlled by the feed detecting means (L1), and the feed detecting means (L1) outputs a stop signal for the filter (41) for each feed amount. If the feed detecting means (L1) does not output a stop signal within a preset time when the filter (41) is wound, the unwinding filter
Since there is no (41), the end detecting means (57) detects the end of unwinding of the filter (41). In the invention according to claim 5,
If the feed detecting means (L1) according to the fourth aspect of the present invention does not output a stop signal within a predetermined time set when the filter (41) is wound, the abnormality detecting means (55) sets the filter (41).
Detects abnormal winding.

[0009]

Therefore, according to the first aspect of the present invention,
While the end pin (45) is provided on the filter (41), when the end pin (45) is unwound, the end detection means (L2) causes the filter (41)
In order to detect the end of unwinding of the filter (4
Since the end of 1) can be reliably detected, the filter
(41) can be reliably exchanged. As a result, without using the used filter (41), it is possible to prevent a decrease in filtration efficiency, prevent clogging and the like, prevent an increase in air resistance, and reduce a decrease in air conditioning efficiency. Can be prevented.

According to the second aspect of the present invention, the roll filter is detected by counting the rotation of the guide roller (7e) and detecting the end of unwinding of the filter (41).
There is no need to provide an end pin (45) or the like in (4), and the end of the filter (41) can be reliably detected with a small number of components. According to the third aspect of the present invention, the unwinding end of the filter (41) is detected using the unwinding direction of the filter (41) with respect to the roll core (42).
It is only necessary to provide one end detection means (L3) such as a limit switch, and the unwinding end of the filter (41) can be detected with a simple configuration. Further, according to the invention according to claim 4, the feed detecting means (L1) for controlling the feed amount of the filter (41) is used, and when the predetermined feed is not performed, the unwinding of the filter (41) is terminated. In order to detect it,
The feed control means can also be used for end detection, and there is no need to newly provide a limit switch or the like, so that the configuration can be simplified.

Further, according to the fifth aspect of the present invention, when the predetermined feed to the filter (41) is stopped, the unwinding abnormality of the filter (41) is detected. Since it is possible to reliably identify and report the abnormality such as the lock in (3) and the end of unwinding, it is possible to always exert a certain filtering function without fail.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, (1) is an air conditioner of a ceiling suspension type, and a filter device (2) is attached to a suction port (not shown) on the front surface. The filter device
As shown in FIGS. 2 and 3, the filter (2) filters the suction air, and is configured by storing a roll filter (4) in a filter casing (3).
As shown in FIG. 5, (4) is formed by winding a filter (41) having a predetermined width around a roll core (42). The filter casing (3) is formed in a horizontally long rectangular body, and inside the filter casing (3), an inner bottom plate (31) and an inner top plate (32) corresponding to the width of the filter (41) are provided. Are provided in parallel. On both sides of the filter casing (3), an unwinding portion (33) and a winding portion (34) of the roll filter (4) are formed, and the unwinding portion (33) and the winding portion (34) are formed. ) And the inside of the filter casing (3) is the filter (41).
Are formed in the filter traveling portion (35) in which the traveling travels. Further, between the inner bottom plate (31) and the inner top plate (32), openings (3a, 3b) are formed at the front center and the back center, and the space between the openings (3a, 3b) is formed. An air flow passage is formed across the filter travel section (35) and communicates with the suction port of the air conditioner (1). Opening lids (36, 37) for opening and closing laterally are provided on the front surfaces of the unwinding part (33) and the winding part (34) on both sides of the filter casing (3). (32) is formed with a through-hole for the roll filter (4). Furthermore, the lower plate of the filter casing (3)
A controller (5) having an operation switch (51), a first display lamp (52), and a second display lamp (53) is provided between (3c) and the inner bottom plate (31).

On the other hand, on the lower surfaces of the unwinding portion (33) and the winding portion (34), support pins (3d) for the roll filter (4) are provided so as to protrude from the inner bottom plate (31). In addition, the rotating shaft (6) of the roll filter (4) is
It is rotatably provided on the upper plate (3e) of (3). And
The rotating shaft (6) of the unwinding part (33) is provided so as to freely rotate, while the rotating shaft (6) of the winding part (34) is driven by a driving shaft installed at an upper part of the filter casing (3). The motor (21) is directly connected. Five guide rollers (7a, ..., 7e) extending in the vertical direction are provided in a zigzag manner on the filter traveling portion (35) of the filter casing (3), and three guide rollers (7a, 7c) are provided. , 7e) are two guide rollers (7b, 7d) in front of the filter casing (3).
A filter (41) provided on the back surface of (3) and extending from the unwinding portion (33) to the winding portion (34) winds each guide roller (7a, ..., 7e) in a meandering shape. .

The roll filter (4) is shown in FIGS.
As shown in the figure, the filter (41) formed in a long shape with a predetermined width
Is wound around a roll core (42), and the filter (41)
Is formed, for example, at a length of 30 m, and a shaft (43) for attaching a roll core (42) is provided at both ends in the longitudinal direction.
The roll core (42) is formed in a hollow cylindrical shape, and a plug (4b) having a concave portion (4a) at the lower portion into which the support pin (3d) is inserted.
And a slit extending from the upper end to the lower end
(4c) is formed. Then, the mounting shaft (43) is positioned inside the roll core (42) so that the slit (4
The roll core (42) is attached to the filter (41) by inserting the end of the filter (41) into c). A pair of U-shaped cuts (44, 4) are formed at the upper end of the roll core (42).
4) are formed in two sets, and each pair of cuts (44, 44) is located in the diametric direction. On the other hand, a connecting pin (61) orthogonal to the axial direction is attached to the lower end of the rotating shaft (6), and the connecting pin (61) is connected to a pair of cut portions (44) of the roll core (42). , 44), the rotating shaft (6) and the roll core (42) are connected so as to rotate integrally. The notch (4
4, 44) are formed to a depth at which the support pin (3d) located below the roll core (42) comes out when the roll core (42) is lifted in a state where the connecting pin (61) is inserted, With the connecting pin (61) inserted, the roll core (42) or the roll filter (4) is lifted slightly to engage or disengage the recess (4a) with the support pin (3d), and the roll core (42) Or roll filter (4)
Is attached to or detached from the unwinding section (33) and the winding section (34). The rotating shaft (6) and the roll core (42) in the unwinding section (33) and the winding section (34) are formed identically, that is, a new roll filter before use.
The roll core (42) of (4) and the roll core for winding the filter (41)
(42) is composed of the same material.

As shown in FIG. 4, three non-slip pieces (71) are provided on the guide roller (7e) closest to the winding section (34).
Is attached, and the non-slip piece (71) is attached to the filter (41).
, Which rotates the guide roller (7e) in synchronization with the travel of the vehicle, and has a plurality of engaging claws (72, 72,...) Formed radially, and the engaging claws (72, 72,...) Is caught on the surface of the filter (41), and the guide roller (7e) rotates. One projection (73) is attached to the upper end of the guide roller (7e), and a first limit switch (L1) is attached to the inner top plate (32) in proximity to the projection (73). I have. The first
The limit switch (L1) is a feed detection unit that outputs a stop signal for the filter (41) by contacting the projection (73) each time the guide roller (7e) makes one rotation and the projection (73) makes one rotation. Make up. In other words, the controller (5) has a filter (4
1) feed control means (54) and filter (41) abnormality detection means (5
5), and the feed control means (54) is linked with the indoor fan control of the air conditioner (1), and when the operation time of the indoor fan reaches a predetermined time, the roll filter (4) is turned on. The drive motor (21) is configured to be driven. For example, when the operation time of the indoor fan reaches 9 hours, the drive motor (21) is driven. Then, when the drive motor (21) is driven, the filter (41) is wound and the guide roller (7e) rotates, and when the projection (73) comes into contact with the first limit switch (L1) by one rotation. , The first limit switch (L1) is turned on to output a stop signal, and the drive motor (2
1) is stopped, and the filter (41) moves by a predetermined feed amount. For example, the feed amount is set to 5 cm for one rotation of the guide roller (7e). The abnormality detecting means (55) is provided when the feed control means (54) does not output a stop signal until the first limit switch (L1) is turned off after a lapse of one minute since the drive motor (21) starts driving the drive motor (21). The winding abnormality of the filter (41) is detected, and the white first display lamp (52) is turned on to notify the abnormality. That is, the roll filter (4)
Is designed to move 5 cm every 9 hours of driving the indoor fan to maintain a predetermined filtration efficiency. Since the movement of 5 cm originally takes only about one second, the first limit switch If (L1) is not turned on, an abnormality is determined.

The roll filter (4) is shown in FIGS.
As shown in FIG. 7, the end pin (45) is provided as a feature of the present invention, while the second limit switch (L2) is provided on the upper surface of the inner top plate (32) in the filter casing (3). The end pin (45) is provided at an end of the filter (41) on the roll core (42) side, and projects slightly upward from the filter (41). The second limit switch (L2) is
When the end pin (45) is unwound from the roll core (42), the filter is arranged so as to come into contact with the end pin (45).
The unwinding of (41) is detected, and the orange second indicator lamp (5
3) is turned on to constitute an end detecting means for notifying the end. That is, as shown in FIG. 8 and FIG.
Is the roll core (4) in the roll filter (4) before use.
2), and the second limit switch (L2) is turned off in this state. Thereafter, the filter (41) is sequentially unwound, and when the unwinding of the filter (41) is completed, as shown in FIGS. 10 and 11, the end pin (45)
Is unwound from the roll core (42) and comes into contact with the second limit switch (L2).

Next, the operation of the filter device (2) will be described. Since the filter device (2) is attached to the suction port of the air conditioner (1), room air is sucked into the air conditioner (1) through the openings on the front and back surfaces of the filter casing (3). When passing through the filter casing (3), it is filtered through the filter (41). The filter (41) includes a feed control unit (54)
For example, when the operation time of the indoor fan reaches 9 hours, the driving motor (21) is driven. Then, when the drive motor (21) is driven, the filter (41) is wound and the guide roller (7e) rotates, and when the projection (73) comes into contact with the first limit switch (L1) by one rotation. , The first
The limit switch (L1) is turned on, a stop signal is output, the drive motor (21) stops, and the filter (41) moves by a predetermined feed amount. For example, the 5 cm filter (41) moves with one rotation of the guide roller (7e), and a new portion of the filter (41) is sequentially fed out.

In the roll filter (4), since the end pin (45) is provided at the end of the filter (41) on the roll core (42) side, the end pin (45) is As shown in FIG. 9, in the roll filter (4) before use, it is wound almost in contact with the roll core (42), and in this state, the second limit switch (L2) is off. Thereafter, the filter (41) is sequentially unwound, and when the unwinding is completed using the filter (41), FIG. 10 and FIG.
As shown in (5), the end pin (45) unwinds from the roll core (42) and comes into contact with the second limit switch (L2). Then, when the end pin (45) comes into contact with the second limit switch (L2), the second limit switch (L2) detects the unwinding of the filter (41) and turns on the orange second display lamp (53). Lights up to notify end. By turning on the second display lamp (53), a service person or the like replaces the roll filter (4). Further, at the time of the feed control of the filter (41), a stop signal is output while the first limit switch (L1) is turned off one minute after the feed control means (54) starts driving the drive motor (21). If not, the abnormality detecting means (55) detects the winding abnormality of the filter (41) and turns on the white first display lamp (52) to notify the abnormality.

Therefore, according to the present embodiment, the filter (41)
When the end pin (45) is unwound, the second limit switch (L2) detects the unwinding of the filter (41). Can be reliably detected, so that the filter (41) can be reliably replaced. As a result, without using the used filter (41), it is possible to prevent a decrease in filtration efficiency, prevent clogging and the like, prevent an increase in air resistance, and reduce a decrease in air conditioning efficiency. Can be prevented. Further, when the predetermined feeding to the filter (41) is not performed, an abnormality such as the lock of the filter (41) and the end of unwinding are performed in order to detect the unwinding of the filter (41). Since the information can be reliably identified and notified, a certain filtering function can always be reliably performed.

FIG. 12 shows an embodiment of the invention according to claim 2, wherein a counter (56) is provided instead of the end pin (45) and the second limit switch (L2) in the previous embodiment. It is. That is, the counter (56) is connected to the power line (5a) and the earth line (5b) via the first limit switch (L1) and the exciting coil (X1) of the second indicator lamp (53), A count is made each time the first limit switch (L1) is turned on, that is, the number of rotations of the guide roller (7e) is counted,
When the rotation speed reaches a preset end value, the filter (4
An end detecting means for detecting the end of unwinding of 1), exciting the exciting coil and lighting the second display lamp (53).
Specifically, since the filter (41) is 30 m and the feed amount at one time is 5 cm, when the filter (41) is unwounded 600 times,
The filter (41) ends, and the second display lamp
(53) will be lit. Other configurations and operations are the same as in the previous embodiment. Therefore, according to the present embodiment, the roll filter is first used to detect the end of unwinding of the filter (41) by counting the rotation of the guide roller (7e).
There is no need to provide an end pin (45) or the like in (4), and the end of the filter (41) can be reliably detected with a small number of components.

FIGS. 13 to 16 show an embodiment of the invention according to claim 3, wherein the end pin (45) in the first embodiment is used.
A third limit switch (L3) is provided in place of the first and second limit switches (L2). That is, the third limit switch (L3) is provided at a position where the filter (41) is in contact with the filter core (42) when the filter (41) extends in the normal direction from the roll core (42).
An end detection means that ends the unwinding when (1) comes into contact is constituted. Specifically, the filter (4) of the roll filter (4)
1) is a slit (4c) of the roll core (42) as shown in FIG.
And a roll core (42) is attached thereto. Immediately before the unwinding of the filter (41) is completed, FIGS.
As shown in A, the filter (41) extends in the tangential direction of the roll core (42), and when the filter (41) extends in the tangential direction, the third limit switch (L3) is turned off. It has become. On the other hand, when the unwinding of the filter (41) is completed, as shown in FIGS. 14 and 15B, the filter (41) is moved from the slit (4c) of the roll core (42) to the roll core (42).
In the direction of the normal. When the filter (41) extends in the normal direction, the third limit switch (L3) is arranged to be turned on. For example, the filter (41) is
In the tangential direction and the normal direction in 2), as shown in FIG.
A third limit switch (L3) is arranged at a position where a displacement C of mm occurs. Other configurations and operations are the same as in the previous embodiment. Therefore, according to the present embodiment, the roll core (42)
Filter using the unwinding direction of the filter (41)
In order to detect the end of unwinding of the filter (41), it is only necessary to provide one third limit switch (L3), and it is possible to detect the end of unwinding of the filter (41) with a simple configuration. it can.

FIG. 17 shows an embodiment of the invention according to claim 4, wherein a first limit switch (L) is used instead of the end pin (45) and the second limit switch (L2) in the first embodiment.
This is based on 1). That is, as shown in FIG. 3, the first limit switch (L1) constitutes a feed detecting means for detecting a feed amount of one filter (41) and is connected to the end detecting means. The end detection means (57) is provided when the feed control means (54) does not output a stop signal until the first limit switch (L1) is turned off one minute after the drive motor (21) starts driving and the first limit switch (L1) is turned off. The end of winding of the filter (41) is detected, and the orange second display lamp (53) is turned on to notify the end. That is, the roll filter (4) is moved by 5 cm every 9 hours of driving the indoor fan to maintain a predetermined filtration efficiency. If the first limit switch (L1) does not turn on after a lapse of minutes, the end is determined. In this embodiment, the end detection means (57) also serves as the abnormality detection means (55),
The first white display lamp (52) is omitted.

The operation of the end detecting means (57) will now be described with reference to the control flowchart of FIG. First, when the feed control means (54) drives the drive motor (21), step
In ST1, it is determined whether or not one minute has elapsed. Until one minute has elapsed, the process proceeds to step ST2, and it is determined whether or not the first limit switch (L1) for feeding is turned on. And
When the first limit switch (L1) is off, since the filter (41) has not moved by a predetermined feed amount, the process returns from step ST2 to step ST1, and continues to drive the drive motor (21). Move the filter (41). Thereafter, the projection (73) of the guide roller (7e) is moved to the first limit switch (L1) by the time one minute elapses after the drive motor (21) is started.
When the first limit switch (L1) is turned on in contact with the filter, the filter (41) has moved by a predetermined feed amount.
The process moves from ST2 to step ST3, where the drive motor (21) is stopped.

On the other hand, in step ST1, when one minute has elapsed after driving the drive motor (21), the determination is YES and the process moves to step ST4, where the first limit switch (L)
It is determined whether or not 1) is turned on. Then, when the first limit switch (L1) is turned on, the process proceeds to step ST3, in which the drive motor (21) is stopped. When the first limit switch (L1) is off, the process proceeds from step ST1 to step ST5. The filter (41) has not moved, so the filter (4
The end of unwinding of 1) is detected, and the second display lamp
(53) will be lit.

Therefore, according to the present embodiment, the filter (41)
The first limit switch (L1) is used to detect the end of unwinding of the filter (41) when the predetermined feed is stopped using the first limit switch (L1) for detecting the feed amount of the first limit switch (L1). ) Can also be used for the end detection, and it is not necessary to newly provide a limit switch or the like, so that the configuration can be simplified.

In each embodiment, the filter (41)
Is meandering, but in the present invention, it is not always necessary to meander, and the filter (41) may be moved in a straight line. In the present invention, the filter (41)
May be moved in the vertical direction in addition to the horizontal direction. Further, the air conditioner (1) to which the filter device (2) of the present invention is attached is not limited to the ceiling suspended type.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a filter device.

FIG. 2 is a cross-sectional plan view of the filter device.

FIG. 3 is a sectional front view of the filter device.

FIG. 4 is a perspective view of a guide roller.

FIG. 5 is a perspective view of a roll filter.

FIG. 6 is a perspective view of a roll core.

FIG. 7 is a front view of a roll filter provided with an end pin.

FIG. 8 is a perspective view at the time of unwinding a roll filter provided with an end pin.

FIG. 9 is a plan view at the time of unwinding a roll filter provided with an end pin.

FIG. 10 is a perspective view at the end of unwinding of a roll filter having an end pin.

FIG. 11 is a plan view at the end of unwinding of a roll filter provided with an end pin.

FIG. 12 is a control circuit diagram of a counter (56) in the second embodiment.

FIG. 13 is a plan view at the time of unwinding a roll filter in a third embodiment.

FIG. 14 is a plan view of the third embodiment at the time when the unwinding of the roll filter is completed.

FIG. 15 is an enlarged plan view of a main part of a roll filter according to a third embodiment.

FIG. 16 is a layout diagram of a third limit switch in the third embodiment.

FIG. 17 is a control flowchart in the fourth embodiment.

[Explanation of symbols]

 1 Air conditioner 2 Filter device 3 Filter casing 33 Unwinding part 34 Rewinding part 35 Filter traveling part 4 Roll filter 4c Slit 41 Filter 42 Roll core 45 End pin 5 Controller 54 Feed control means 55 Abnormality detection means 56 Counter 57 End detection Means 7e Guide roller L1 First limit switch L2 Second limit switch L3 Third limit switch

Claims (5)

(57) [Claims] An unwinding portion (33) of a roll filter (4) is provided at one end of a filter casing (3) attached to the air conditioner (1), and a winding portion of a roll filter (4) is provided at the other end. A take-up portion (34) is formed, and a roll filter (4) formed by winding a filter (41) around a roll core (42) is housed in the unwinding portion (33) of the filter casing (3). On the other hand, the filter casing (3)
A roll core (42) for winding the filter (41) is housed in the winding section (34) of the filter casing (3), and is disposed between the unwinding section (33) and the winding section (34) in the filter casing (3). Is a filter running part (3
5) The filter device of the air conditioner, wherein the filter (41) is moved from the unwinding part (33) to the winding part (34) by a predetermined feed amount to filter the flowing air, An end pin (45) provided at an end of the roll filter (4) on the roll core (42) side of the filter (41), and a filter (41) of the filter casing (3) provided in close proximity to a traveling path. And an end detecting means (L2) for detecting the end of unwinding of the filter (41) when the end pin (45) comes into contact with the end pin (45). 2. An unwinding portion (33) of a roll filter (4) at one end of a filter casing (3) attached to an air conditioner (1), and an unwinding portion of a roll filter (4) at the other end. A take-up portion (34) is formed, and a roll filter (4) formed by winding a filter (41) around a roll core (42) is housed in the unwinding portion (33) of the filter casing (3). On the other hand, the filter casing (3)
A roll core (42) for winding the filter (41) is housed in the winding section (34) of the filter casing (3), and is disposed between the unwinding section (33) and the winding section (34) in the filter casing (3). Is a filter running part (3
5) The filter device of the air conditioner, wherein the filter (41) is moved from the unwinding part (33) to the winding part (34) by a predetermined feed amount to filter the flowing air, A guide roller (7e) provided in the filter traveling portion (35) of the filter casing (3) and rotating in synchronization with the traveling of the filter (41); and counting and rotating the guide roller (7e). End detection means (56) for comparing the number with a preset end value, and detecting the end of unwinding of the filter (41) when the rotation speed reaches the end value.
And a filter device for an air conditioner. 3. An unwinding portion (33) of a roll filter (4) at one end of a filter casing (3) attached to the air conditioner (1), and an unwinding portion of a roll filter (4) at the other end. A take-up portion (34) is formed, and a roll filter (4) formed by winding a filter (41) around a roll core (42) is housed in the unwinding portion (33) of the filter casing (3). On the other hand, the filter casing (3)
A roll core (42) for winding the filter (41) is housed in the winding section (34) of the filter casing (3), and is disposed between the unwinding section (33) and the winding section (34) in the filter casing (3). Is a filter running part (3
5) The filter device of the air conditioner, wherein the filter (41) is moved from the unwinding part (33) to the winding part (34) by a predetermined feed amount to filter the flowing air, When the filter (41) of the roll filter (4) stored in the unwinding part (33) extends in the direction normal to the roll core (42), the filter (41) comes into contact and the unwinding of the filter (41) is completed. A filter device for an air conditioner, comprising: an end detection means (L3) for detecting a condition. 4. An unwinding portion (33) of a roll filter (4) at one end of a filter casing (3) attached to the air conditioner (1), and an unwinding portion of a roll filter (4) at the other end. A take-up portion (34) is formed, and a roll filter (4) formed by winding a filter (41) around a roll core (42) is housed in the unwinding portion (33) of the filter casing (3). On the other hand, the filter casing (3)
A roll core (42) for winding the filter (41) is housed in the winding section (34) of the filter casing (3), and is disposed between the unwinding section (33) and the winding section (34) in the filter casing (3). Is a filter running part (3
5) The filter device of the air conditioner, wherein the filter (41) is moved from the unwinding part (33) to the winding part (34) by a predetermined feed amount to filter the flowing air, Feed detection means (L1) for outputting a stop signal of the filter (41) when the filter (41) reaches a predetermined feed amount, and the feed detection means (L1) is preset when the filter (41) is wound. An end conditioner (57) for detecting the end of unwinding of the filter (41) if a stop signal is not output within a predetermined time. 5. A filter device for an air conditioner according to claim 1, wherein a feed detecting means (L1) for outputting a stop signal for the filter (41) when the filter (41) reaches a predetermined feed amount; The means (L1) includes an abnormality detecting means (55) for detecting an abnormality in winding of the filter (41) unless a stop signal is output within a predetermined time set when winding the filter (41). A filter device for an air conditioner, comprising: