WO2005052456A1

WO2005052456A1 - Air conditioner, and control method and control program for air conditioner

Info

Publication number: WO2005052456A1
Application number: PCT/JP2004/017385
Authority: WO
Inventors: Nobuhiro Ogura; Seiichi Koga; Masazumi Makino; Jin Yoshida; Morinobu Iijima; Takeshi Watanabe; Kazuhiro Shimura; Masanori Akutsu; Yoshinobu Hamada
Original assignee: Toshiba Carrier Corporation; Advanced Air-Conditioning Research And Development Center Co., Ltd.; Sanyo Commercial Service Co., Ltd.
Priority date: 2003-11-30
Filing date: 2004-11-24
Publication date: 2005-06-09
Also published as: KR20060105761A; EP1701099B1; KR100835769B1; KR20070107173A; EP1701099A1; EP1701099A4; KR100801384B1

Abstract

An air conditioner enabling the easy and safe cleaning of a filter, comprising a suction grill (37) having a filter for air cleaning installed at the bottom thereof. The first and second units as lifting means lift the suction grill (37) by supporting the suction grill (37) by hanging strings (50a) to (50d) and delivering or winding back the hanging strings (50a) to (50d). When the first and second units are not brought into contact with the lateral one end of the suction grill (37) while a specified time is passed after the lateral other end of the suction grill (37) comes into contact with an air conditioner body (1a) when the suction grill is stored, the hanging strings (50a) to (50d) are delivered to lower the other end in contact with the air conditioner body (1a) by a predetermined distance. Also, filter chamber having a high performance filter is installed between the air conditioner body and the suction grill, the first and second units as the lifting means for lifting the suction grill are disposed on the inside of side covers installed on both sides of the air conditioner body, and the suction grill is supported by the lifting means by using the hanging strings.

Description

Specification

Air conditioner, control method of air conditioner, and control program

Technical field

The present invention relates to an air conditioner provided on a ceiling or the like of a room, a control method of the air conditioner, and a control program.

Background art

BACKGROUND ART [0002] A ceiling-suspended air conditioner configured to be suspended from an indoor ceiling using suspension bolts has been known (for example, Patent Document D. This type of ceiling suspended type). In the air conditioner of the present invention, a suction grill is provided on the bottom surface of the air conditioner body (the surface facing the floor of the building), and a filter is provided on the suction grill. The filter is removed by the hands of workers and cleaned periodically to achieve the full performance of the air conditioner, and this type of air conditioner is installed on the suction grill. In some cases, a filter chamber containing a high-performance filter (for example, a long life filter) other than a filter is provided (for example, Patent Document 2).

Patent Document 1: Japanese Patent Application Laid-Open No. 9-275251

Patent Document 2: JP-A-11-101497

Disclosure of the invention

Problems to be solved by the invention

[0003] While removing the filter from the air conditioner body to remove the filter from the air conditioner body while cleaning, the worker must perform the irrigation work near the ceiling surface each time. Not only is it very complicated, but also when removing the suction grille, it is necessary to work on a table or the like, which is a favorable force in terms of safety. Similarly, in an air conditioner equipped with the above-mentioned filter chamber, it is very troublesome to remove the filter near the ceiling surface each time. I had to work and it was a favorable effort from a safety standpoint.

[0004] The present invention has been made in view of the above circumstances, and provides an air conditioner that can perform filter cleaning more easily and safely, a control method of the air conditioner, and a control program. Intended to provide grams.

Means for solving the problem

[0005] In order to achieve the above object, the present invention relates to an air conditioner having a storage section for storing a suction grill on which an air purification filter is mounted, and further comprising: Lifting and lowering means for raising and lowering the suction grille together with the filter by supporting and extending or rewinding the suspension cord; and a width of the suction grille when raising the suction grille and storing it in the storage portion. When the other end of the suction grill is not in contact with the other end of the suction grille until the predetermined time elapses, the lifting string is pulled out by the lifting / lowering means. A control means for lowering the one end in contact with the storage portion by a predetermined distance, and then rewinding the suspension string again to raise the entire suction grille. .

[0006] Further, according to the present invention, the control means may be configured such that, when the suction grill is moved up and down, when one end in the width direction of the suction grill abuts on the storage portion, the force is not changed until a predetermined time elapses. When the other end of the suction grill comes into contact with the storage portion, the lifting / lowering means is caused to draw out the suspension string, and the entire suction grill is lowered by a predetermined distance. And the entire suction grill is raised by a predetermined distance.

Further, according to the present invention, the control means causes the lifting / lowering means to feed out the suspension string, lowers the entire suction grill by a predetermined distance, and then causes the lifting / lowering means to rewind the suspension string again. The descent / raising operation for raising the entire suction grill by a predetermined distance is repeated n times (n≥2).

[0007] Further, the present invention is characterized in that the elevating means is provided on each of both sides in the width direction of the air-conditioning apparatus main body.

[0008] Further, the present invention is characterized in that it is a ceiling-suspended type which is installed by being suspended from an indoor ceiling.

[0009] Further, the present invention provides an air conditioner, comprising a filter chamber provided with a high-performance filter between the air conditioner main body and the suction grill, and inside a side cover provided on both sides of the air conditioner main body. , Disposing lifting means for raising and lowering the suction grill, The elevating means supports the suction grill with a hanging string.

[0010] Further, the present invention is characterized in that the filter chamber is provided with a gap through which the hanging string passes.

[0011] Further, the present invention is characterized in that the elevating means is attached and fixed to a portion of the air-conditioning apparatus main body covered by the side cover.

[0012] Further, the present invention is characterized in that the elevating means is fixed to the side cover.

[0013] Further, in the present invention, the filter chamber includes a four-sided frame arranged at a suction port of the air-conditioning apparatus main body, and a filter frame for disposing the high-performance filter. A gap for passing the hanging string is provided between the frame and the frame.

[0014] Further, according to the present invention, the suction grill has a hanging string connecting portion that protrudes toward the air conditioner main body and is connected to the hanging string, and the filter chamber includes the hanging string connecting portion. It is characterized in that there is a gap through which it passes.

[0015] Further, the present invention includes a storage portion for storing a suction grill on which an air purifying filter is mounted, supporting the suction grill with a suspension string, and extending or unwinding the suspension string. According to a control method for controlling an air conditioner provided with elevating means for elevating and lowering the suction grill together with the filter, when the suction grill is raised and stored in the storage portion, the width of the suction grill in the width direction is reduced. If the other end of the suction grill is not in contact with the other end of the suction grill until a predetermined time elapses from when the one end abuts on the storage portion, the lifting / lowering unit is caused to extend the hanging string, After lowering the one end in contact with the storage portion by a predetermined distance, the suspension string is rewound again to raise the entire suction grill.

[0016] Further, the present invention has a storage portion for storing a suction grill on which an air purifying filter is mounted, supporting the suction grill with a suspension string, and extending or rewinding the suspension string. In a control program for controlling an air conditioner provided with elevating means for elevating the suction grill together with the filter, when the air conditioner is raised in the suction grill and stored in the storage portion, the width of the suction grill is adjusted. Direction when one end of the direction comes into contact with the storage portion. If the other end does not abut, the lifting / lowering means draws out the suspension string, lowers the one end in contact with the storage unit by a predetermined distance, and then rewinds the suspension string again. And function as means for raising the entire suction grille.

The invention's effect

[0017] According to the present invention, when the suction grill is raised and stored in the storage section, when one end in the width direction of the suction grill abuts on the storage section, the force is also increased until a predetermined time elapses. If the other end of the suction grill is not in contact, the lifting cord is extended by the lifting / lowering means, the one end in contact with the storage portion is lowered by a predetermined distance, and then the suspension cord is rewound again. As a result, the filter of the air conditioner can be cleaned more easily and safely by an operator or the like because the entire suction grill is raised.

[0018] Further, the present invention includes a filter chamber provided with a high-performance filter between the air-conditioning apparatus main body and the suction grill, and moves the suction grill up and down inside side covers provided on both sides of the air-conditioning apparatus main body. Since the suction grill is supported by a suspension string, the suction grill can be moved up and down even when the filter chamber is mounted.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an external configuration of a ceiling-suspended air conditioner 1 as an example of an air conditioner according to the present embodiment. FIG. 2 is a cross-sectional view showing the internal structure of the air conditioner body la, and FIG. 3 is a plan view showing the internal structure.

[0020] As shown in Fig. 1, the ceiling-suspended air conditioner 1 has side covers 45 arranged on both sides of the air conditioner main body la, and a bottom panel 14 at a lower portion (bottom) of the air conditioner main body la. The suction grille 37 is arranged and configured, and the bottom of the air conditioner main body la is configured as a storage section of the suction grille 37. Further, the air conditioner body la is provided with a receiving unit (not shown) for receiving an instruction signal from a remote controller (not shown) for controlling the air conditioner body la.

[0021] As shown in Fig. 2, the air conditioner main body la is pulled by suspension bolts 3 suspended from the ceiling. It is hung and installed on the underside of the indoor ceiling panel 5 'fixed. In the main body la of the air conditioner, a heat exchanger 15 and a blower 13 are arranged in this order in front of which an outlet 41 is provided. In addition, various devices such as an electrical box 11 and a refrigerant pipe 29 are also provided. Are stored almost without gaps.

The blower 13 has four blower units 21 to 24 as shown in FIG. 3, and these are fixedly arranged on a rotating shaft ₂₇ driven by one motor ₂₅ . The heat exchanger 15 is a fin-tube heat exchanger as shown in FIG. 2, and is installed obliquely in the air conditioner body la. A refrigerant pipe 29 is connected to the heat exchange, and the refrigerant pipe 29 is led out of the air conditioner main body la and connected to a compressor, a pressure reducing device, an outdoor heat exchange, etc. of an outdoor unit (not shown). You.

As shown in FIG. 2, a styrene foam drain pan 31 is provided below the heat exchanger 15, and a sheet metal panel 33 is provided below the drain pan 31. As shown in FIG. 3, a drain pump unit 35 is connected to the drain reservoir 31a of the drain pan 31 via a flexible tube 32. The drain pump accommodated in the drain pump unit 35 is configured to collect the drain collected in the drain reservoir 31a. And discharge it out of the air conditioner body la.

[0024] Below the blower 13, a suction grill 37 made of resin is installed as shown in Fig. 2, and a filter 39 for purifying air is attached to the suction grill 37. Then, when the blower 13 is driven, the indoor air is sucked into the air conditioner main body 1a through the suction grill 37 and the filter 39, and this air is exchanged in heat by the heat exchange 5 and then into the indoor through the outlet 41. Be blown out. The middle partition plate 43 is a partition plate that transversely partitions substantially the center of the air conditioner main body la, and the blower 13 is disposed in a room partitioned by the middle partition plate 43.

Here, in the present embodiment, as shown in FIG. 4, a plurality of hanging string connecting portions 38a to 38d projecting upward are provided on suction grill 37, and these hanging string connecting portions 38a to 38d are provided in these portions. The suction grille 37 is supported by the air conditioner main body la via a plurality of connected suspension strings 50a to 50d. Then, the hanging strings 50a to 50d are unwound or unwound, so that they are raised and lowered within a predetermined range, and are placed on the suction grill 37 at a position where the suction grill 37 is lowered. The filter 39 is configured to be removable.

In the following description, when it is not necessary to distinguish each of the hanging strings 50a to 50d and each of the hanging string connecting parts 38a to 38d, they are referred to as “the hanging string 50” and “the hanging string connecting part 38”. Do

As shown in FIG. 3, the four lifting / lowering mechanisms for paying out or rewinding the four suspension strings 50a to 50d include two units 60 attached to both ends of the air conditioner main body la, ie, the first and second units. And inside the second unit 60a, 60b. As shown in FIG. 5, each of the first unit 60a and the second unit 60b is attached to a side surface of the air conditioner main body la and then held and fixed by the holder-62. The first unit 60a is attached and fixed to the right end face of the air conditioner main body la, and is connected to two suspending strings 50a and 50b that support one side 37A of the suction grill 37 (see FIG. 4). On the other hand, the second unit 60b is attached and fixed to the left end surface of the air conditioner main body la, and has two remaining suspension cords 50c and 50d supporting the other side 37B of the suction grill 37 (see FIG. 4). Be linked.

FIG. 6 is a diagram schematically showing a configuration of the first unit 60a. As shown in this figure, the first unit 60a includes two bobbins 70 around which one suspension cord 50 is wound, and one drive motor 71 for rotating and driving the bobbins 70, one for each bobbin 70, The drive motor 71 drives the bobbin 70 via a gear train (not shown), so that the two suspension cords 50 can be fed out or rewinded. Further, the first unit 60a is provided with a control circuit (for example, MPU) 72 for controlling the rotation drive by the drive motor 71, and the control circuit 72 stores a control program for the control operation. Each bobbin 70 is provided with a rotation detector 75 such as a rotary encoder that detects the rotation amount of the bobbin 70, and outputs the rotation amount of the bobbin 70 to the control circuit 72.

Further, a plurality of signal lines 73 are drawn out of the control circuit 72 and connected to a unit-side connector 74 formed outside the housing surface of the first unit 60a. The unit-side connector 74 is formed in a surface of the housing of the first unit 60 that faces the side surface of the air conditioner main body la when attached to the air conditioner main body la. The first unit 60a and the air conditioner main body la are connected to be able to perform signal communication by engaging with a main body side connector (not shown) provided on the side surface of the air conditioner main body la. That is, the first unit 60a By being attached to the main unit la, the control circuit (not shown) on the air conditioner main unit la side and the control circuit 72 on the first unit 60a side can communicate with each other. Note that the configuration of the second unit 60b is the same as the configuration of the first unit 60a, and a description thereof will be omitted.

When the operator raises and lowers the suction grill 37 (the filter 39), first, an instruction to raise and lower the suction grill 37 is given to the air conditioner main body la by a remote controller or the like. When the control circuit of the air conditioner body la receives this instruction, it transmits the instruction to the control circuits 72 of the first unit 60a and the second unit 60b, and the control circuit 72 that receives the instruction drives the drive motor 71 to rotate (correct). By rotating (rotating or reversely rotating), the four suspension strings 50a to 50d are fed out or taken up, and the suction grill 37 is moved up and down.

The control circuit 72 of the first unit 60a and the second unit 60b controls the suction grill 37 based on a detection signal from the rotation detector 75 so that the suction grill 37 stops at the working position when the suction grill 37 is lowered. Controls the amount by which the hanging cord 50 is extended. Here, the work position is a position where the operator can easily remove the filter 39 placed on the suction grill 37, and the floor surface force is, for example, about 1 meter high. In the present embodiment, the distance from the bottom surface of the air conditioner main body la (that is, the mounting position of the suction grill 37) to the work position is also set in the control circuit 72 in advance, and the control circuit 72 determines the distance by this distance. The bobbin 70 is rotated so that the hanging string 50 is extended.

On the other hand, when the suction grille 37 is raised, the control circuit 72 is based on the detection signal from the rotation detector 75 so that when the suction grille 37 is lowered, the suspension cord 50 is rewound by the amount of the extension. By controlling the drive motor 71 by suction, the suction grill 37 can be housed in the bottom surface of the air conditioner body la.

By the way, the suction grille 37 descends in a posture inclined in the lateral width direction (the lateral width direction of the air conditioner main body la), or the amount of feeding or unwinding of the suspension cord 50 by each of the two drive motors 71 is different. When the suction grille 37 is raised and stored in the same manner, the height of both sides 37 A and 37B of the suction grille 37 is not aligned in the horizontal direction (horizontal direction with respect to the ceiling surface) and tilts in the width direction. You may end up in a posture. Also, when the suction grill 37 is moved up and down, the suction grill 37 vibrates due to vibration or the like, and the suction grill 37 is not completely closed on the bottom surface of the air conditioner main body la, and the suction grill is not fitted. The corner of the grill 37 etc. is the air conditioner body la In some cases, a hooking force is applied to the bottom panel 14 of the vehicle. In particular, these phenomena become more remarkable as the width of the suction grill 37 becomes longer (that is, as the aspect ratio of the suction grill 37 becomes larger).

[0033] Therefore, in the present embodiment, when the suction grille 37 is stored, a certain period of time has elapsed since either of the sides 37A and 37B of the suction grille 37 contacted the bottom surface of the air conditioner body la. If the other side does not come into contact with the bottom of the air conditioner body la even after the passage, the suction drill 37 is assumed to have a large horizontal inclination, and an operation process for correcting this inclination is executed. It has become.

Further, in the present embodiment, after the suction grille 37 reaches the bottom surface of the air conditioner main body la during the above-described operation processing, the suction grille 37 is lowered, and the suction grille is returned again. By repeating the descent and ascent control, such as raising the rill 37 until it reaches the air conditioner main unit la, the swing of the suction grill 37 can be suppressed, and the suction grill 37 is fully connected to the air conditioner main unit la. It is ensured to be stored in the closed state.

Hereinafter, an operation process at the time of storing the suction grill 37 will be described with reference to a flowchart shown in FIG. FIG. 7 is a flowchart showing an operation procedure executed by the control circuit 72 when the suction grill 37 is stored.

As shown in this figure, the control circuit 72 drives one of the two sides 37A and 37B of the suction grill 37 when driving the two drive motors 71 to rewind the suspension string 50. When one of the drive motors 71 is locked by contacting the bottom surface of the air conditioner main body la, and the lock current resulting from this lock is detected (step S1), the control circuit 72 A timer (not shown) is started to start counting, and another drive caused by the other side of the suction grill 37 contacting the bottom surface of the air conditioner body la during a preset count time Ct. It is determined whether the lock current in the motor 71 has been detected (step S2).

[0037] The count time is set in accordance with a degree allowed as the inclination of the suction grill 37 in the lateral width direction. More specifically, as shown in FIG. 8, when the width of the suction grill 37 is W and the inclination angle in the width direction is 0, the amount of displacement of each side 37A and 37B of the suction grill 37 in the height direction is shown. L is approximately L = Θ XW. On the other hand, assuming that the amount of unwinding of the suspension cord 50 per unit time of the drive motor 71 is S, the time T required to rewind the displacement L is approximately T = LZS. The

That is, when the allowable inclination angle of the suction grille 37, that is, the displacement amount is Lt, the count time Ct = LtZS force is set in the control circuit 72 as the time to count.

When the lock current of the other drive motor 71 is not detected in the determination of step S2 and the contact of the other side of the suction grill 37 is not detected (step S2: NO), The control circuit 72 stops each of the two drive motors 71 (step S3), and then abuts, drives only the drive motor 71 on the ru side, draws out the hanging string 50, and abuts on this side. Is lowered by a predetermined distance M (step S4), and the processing procedure returns to step S1.

By the above operation, as shown in FIG. 9, the displacement L ′ between the sides 37A and 37B in the height direction is shown.

= I LM | (| x | indicates the absolute value of the value X), and by repeating the operations of steps S1 to S4, the deviation L, is reduced to the allowable deviation Lt or less, and suction is performed. It becomes possible to make the inclination of the grill 37 in the width direction small enough.

[0040] As described above, when the deviation L in the height direction between the two sides 37A and 37B becomes equal to or less than the allowable deviation Lt, the determination result in step S2 becomes YES, and the control circuit 72 proceeds to step Proceeding to S5, an operation for securely housing the suction grille 37 in the fully closed state is performed.

[0041] More specifically, the operation of steps S1 to S4 corrects the inclination of the suction grille 37 in the width direction, but the suction grille 37 is stored in the bottom surface of the air conditioner main body la in a fully closed state. Not necessarily, and may be in a state of being pulled on the bottom panel 14. Therefore, the control circuit 72 drives the drive motor 71 to rotate and lower the suction grill 37 as a whole by a first predetermined distance (for example, 1 meter) in order to store the suction grill 37 in the fully closed state. After that (step S5), the suction grill 37 is raised again by the first predetermined distance lowered in step S5 until the suction grill 37 comes into contact with the bottom surface of the air conditioner body la (step S6). ), The suction grill 37 is brought into contact with the bottom of the air conditioner body la.

[0042] By the operations of steps S5 and S6, the suction grill 37 is lowered and the posture thereof is corrected, and the suction grill 37 is stored again with the suction grill 8 fully closed by raising it again. However, if the posture is not corrected sufficiently, it may still be in a state of being hooked on the bottom surface. Therefore, in order to further increase the certainty, the control circuit 72 switches the suction grill 37 again. After lowering by the second predetermined distance (step S7), it is raised again by the second predetermined distance (step S8), and the suction grill 37 is brought into contact with the bottom surface. At this time, the contact between the suction grille 37 and the air conditioner main body la (the contact in step S6) suppresses the swinging of the suction grille 37 at the time of ascent, and when the suction grille 37 is lowered again. By making the lowering width (the second predetermined distance) smaller than the first predetermined distance, it becomes difficult for the suction grill 37 to oscillate, so that the suction grill 37 is air-conditioned while its vibration is sufficiently suppressed. It comes into contact with the bottom surface of the machine body la and is almost completely stored in the fully closed state.

In order to store the suction grille 37 in the fully closed state, the number of repetitions of lowering and raising the suction grille 37 is not limited to one, but by increasing the number of repetitions (for example, three times) However, the suction grille 37 can be stored in the bottom surface of the air conditioner body la in a completely closed state.

As described above, according to the present embodiment, since suction grill 37 is moved up and down, the operator can lower suction grill 37 to the working position and remove filter 39, Since the air conditioner main body la is installed, the work of removing the filter 39 near the ceiling surface can be performed easily and safely without having to perform the work.

Further, according to the present embodiment, the first and second units 60a and 60b for raising and lowering suction grille 37 are built in air conditioner main body la (that is, housed in casing 12A). The configuration is provided outside the side of the air conditioner main unit la, and furthermore, the unit side connector 74 allows communication with the air conditioner main unit la.Therefore, during maintenance of the first and second units 60a and 60b, etc. This makes it easy to remove and attach these units.

Further, according to the present embodiment, when storing suction grille 37, after suction grille 37 reaches the bottom surface of air conditioner main body la, and lowering this suction grille 37, Since the suction grille 37 is raised until it reaches the air conditioner main unit la again, the rise and fall is repeated multiple times, the swing of the suction grille 37 is suppressed, and the suction grille 37 is fully connected to the air conditioner main unit la. It can be securely stored in the closed state.

Further, according to the present embodiment, when storing suction grille 37, one of sides 37A and 37B of suction grille 37 comes into contact with the bottom surface of air conditioner main body la at one time. Regular time If the other side does not contact the bottom surface of the air conditioner body la even after the interval has elapsed, lower only the contacting side and lower again, and again, the entire suction grille 37 (both sides 37A, 37B) As a result, the inclination of the suction grill 37 in the width direction during storage can be corrected.

In this embodiment, as shown in FIGS. 10 and 11, a filter chamber 90 is attached to the suction port of the air conditioner main body la.

In the drawings, the same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0049] The filter chamber 90 is used when a high-performance filter is added. For example, a filter whose replacement cycle is relatively fast is arranged in the suction grill 37, whereas the filter chamber 90 is not used. Has a relatively long replacement cycle !, and a filter (long life filter) 100 is arranged. The filter 100 includes a light regeneration deodorization filter, a normal temperature regeneration deodorization filter, and the like in addition to the disposable filter.

In this embodiment, a suction grille 37 is mounted on the lower surface of the filter chamber 90, and the suction grille 37 can be lifted up and down via a hanging cord 50 as shown in FIGS. Lowered favored.

That is, as shown in FIG. 12, the suction grill 37 is provided with a plurality of hanging string connecting portions 38a-38d protruding upward, and a plurality of (four) hanging wires connected to these hanging string connecting portions 38a-38d. The suction grill 37 is supported on the lower surface of the filter chamber 90 via the strings 50a to 50d. By pulling out or unwinding these suspending strings 50a-50d, the filter 39 placed on the suction grille 37 can be removed at the position where the suction grille 37 is lowered and the suction grille 37 is lowered. Is configured.

[0051] As shown in Fig. 12, the lifting / lowering mechanism for feeding out or rewinding the four hanging strings 50a-50d (Fig. 14) includes two units 60 fixed to both ends of the air conditioner main body la, That is, they are housed in the first and second units 60a and 60b. After each of the first unit 60a and the second unit 60b is attached to the side surface of the air conditioner main body la, it is held and fixed by the holder 62. The first unit 60a is located on the right end face of the air conditioner body la. The two suspension cords 50a and 50b that support one side 37A of the suction grill 37 (see FIG. 14) are connected thereto. On the other hand, the second unit 60b is attached and fixed to the left end face of the air conditioner main body la, and is connected to the remaining two suspension cords 50c and 50d supporting the other side 37B of the suction grill 37 (see FIG. 14). Is done.

[0052] As shown in Fig. 12, the filter chamber 90 has a four-sided frame 91 made of sheet metal that can be attached to the suction port of the air conditioner main body la, a filter frame 92 for disposing the filter 100, and a schematic configuration. Is done.

As shown in FIG. 13, the four-sided frame 91 includes sheet metal frame members 91a and 91b arranged in the longitudinal direction and having a substantially U-shaped cross section, and sheet metal members formed in the short direction and having a substantially U-shaped cross section. A frame member 9lc and 91d are provided, and a partition member 93 having a substantially rectangular cross section is provided substantially in the center of the four-sided frame 91 along the lateral direction. In general, the filter chamber is formed of a sheet metal frame member having a substantially U-shaped cross section, and is formed by a four-sided frame. Therefore, in a wide air conditioner such as a ceiling-suspended air conditioner, the longitudinal (width direction) frame member is used. In this embodiment, since the partition member 93 is provided, strength is increased, and problems such as deformation of the filter chamber 90 during transportation and the like are eliminated.

[0053] As shown in Figs. 15 and 16, the filter frame 92 includes an outer filter frame 92a and an inner filter frame 92b.

These are arranged on the left and right ends of the square frame 91, and are arranged in pairs along the short direction of the force square frame 91, respectively. In this air conditioner, two types of filters 100 can be selectively mounted. In the state of FIG. 16, a small filter 100 is mounted between a pair of inner filter frames 92b. When mounting the large filter 100, the inner filter frame 92b connected to the outer filter frame 92a via the screw 92c is removed, and the large filter 100 is mounted between the pair of outer filter frames 92a.

In this embodiment, as shown in FIG. 16, a hanging cord 50 for hanging the suction grill 37 is passed through a gap S between the four-sided frame 91 and the outer filter frame 92a. The gap S is formed to have a size that allows not only the hanging string 50 but also at least the hanging string connecting part 38 that locks the hanging string 50 to pass through, and the first unit 60a (or The second unit 60b) is arranged.

In this way, the gap S for passing the plurality of suspending strings 50 suspending the suction grill 37 is formed in all directions. Since the filter chamber 90 is provided between the frame 91 and the outer filter frame 92a, even if the filter chamber 90 is attached to the suction port of the air conditioner main body la, the filter chamber 90 is not attached to the hanging string 50 or the hanging string connecting portion 3. 8, so that the suction grill 37 can be moved up and down. Therefore, according to the above configuration, the lifting mechanism having the same structure is used regardless of whether the filter chamber 90 is mounted (the second embodiment) or the filter chamber 90 is not mounted (the first embodiment). Thus, the suction drill 37 can be moved up and down.

As shown in FIG. 16, the inner dimension L1 of the four-sided frame 91 of the filter chamber 90 is substantially equal to the inner dimension L2 of the air conditioner body la. According to this, the suction grill 37 having the same structure can be used regardless of whether the filter chamber 90 is installed (second embodiment) or the filter chamber 90 is not installed (first embodiment). Becomes possible. In FIG. 16, when the suction grille 37 is raised, the upper surface of the peripheral edge of the suction grille 37 comes into contact with the four-sided frame 91, and the suction grille 37 can be positioned horizontally and in close contact with the filter chamber 90. it can.

Here, the first and second units 60a and 60b detect that the suction grill 37 has reached the storage position by detecting the rotation stop of the bobbin 70. Therefore, even if the filter chamber 90 is mounted (second embodiment) or the filter chamber 90 is not mounted (first embodiment), the winding of the suspension string In the control of the lifting mechanism according to the second embodiment, the suction grill 37, which does not require any change to the control of the first embodiment, is moved to a position where it contacts the filter chamber 90. Can be stopped almost exactly.

[0057] According to the present embodiment, even when filter chamber 90 is mounted, suction drill 37 can be moved up and down, so that the operator lowers suction grille 37 to the work position and filters. 39 can be removed.

Therefore, since the air conditioner main body la is installed and the work of removing the filter 39 near the ceiling surface is not required, the work can be performed easily and safely.

[0058] The above-described embodiment is merely an embodiment of the present invention, and can be arbitrarily modified within the scope of the present invention. For example, in the above-described embodiment, each of the first unit 60a and the second unit 60b, which are the elevating mechanisms, is attached and fixed to the outer side surface of the air conditioner body la. (See FIG. 5 or FIG. 12) and the force described for the configuration covered by the side cover 45 is not limited to this. As shown in FIG. 17, each of the first unit 60a and the second unit 60b is It may be a configuration that is arranged inside one by one!

In this configuration, as shown in FIG. 17, the signal line 73 drawn from the control circuit 72 (see FIG. 6) of the first unit 60a and the second unit 60b is drawn out of the unit housing, and By connecting the unit side connector 74 provided at the end of 73 to the side of the air conditioner main unit la, the first unit 60a and the second unit 60b can be connected to the air conditioner main unit la so that they can communicate. can do.

In the above-described embodiment, a configuration in which the suction grill 37 is in contact with the air conditioner main body la or the filter chamber 90 is detected based on a detection signal of the rotation detector 75 (see FIG. 6) is exemplified. Not limited to this, an appropriate number of switches for detecting that the suction grille 37 is in contact with the air conditioner body la or the place where the suction grille 37 is stored in the filter chamber 90 are provided. Alternatively, the configuration may be such that the drive current of the drive motor 71 is detected and the transient current accompanying the stop of the rotation of the bobbin 70 is detected.

Further, in the above-described embodiment, the suction grille 37 is hung by the four hanging strings 50a to 50d.

For example, the number of suspension strings may be arbitrary.

[0060] In the above-described embodiment, a case has been described where the present invention is applied to a ceiling-suspended air conditioner. However, the present invention can be widely applied to an air conditioner such as an embedded ceiling air conditioner. is there.

Brief Description of Drawings

FIG. 1 is a perspective view showing an external configuration of a ceiling-suspended air conditioner according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a configuration of an air conditioner.

FIG. 3 is a top view showing the internal configuration of the air conditioner body.

FIG. 4 is a view for explaining lifting and lowering of a suction grill.

FIG. 5 is a diagram showing a unit in which a lifting mechanism is stored.

FIG. 6 is a diagram schematically showing a functional configuration of a unit.

FIG. 7 is a flowchart showing an operation procedure when the suction grill is stored by the air conditioner body. The

[8] FIG. 8 is a view for explaining an operation when correcting the inclination in the lateral width direction when the suction grill is stored.

[9] FIG. 9 is a diagram for explaining the operation when correcting the inclination in the lateral width direction when the suction grill is stored.

[10] Fig. 10 is a perspective view showing an external configuration of a ceiling-suspended air conditioner when a filter chamber is installed.

FIG. 11 is a cross-sectional view showing a ceiling-suspended air conditioner when a filter chamber is installed. [12] Fig. 12 is a perspective view showing a filter chamber of the ceiling-suspended air conditioner together with its peripheral configuration.

[13] FIG. 13 is a perspective view showing a filter chamber of the ceiling-suspended air conditioner together with its peripheral configuration.

[14] FIG. 14 is a perspective view showing a filter chamber of the ceiling-suspended air conditioner together with its peripheral configuration.

[15] Fig. 15 is a perspective view showing a lifting mechanism of the suction grill.

FIG. 16 is a cross-sectional view showing a lifting mechanism of the suction grill.

[17] FIG. 17 is a view showing a unit working in a modified example of the present invention.

Explanation of symbols

1 Ceiling-suspended air conditioner

la Air conditioner body

11

13 blower

14 Bottom panel

15 Heat exchanger

31 Drain Nonon

37 Suction grill

38, 38a- 38d Hanging strap connection

39, 100 filters Side cover, 50a-50d Hanging string a 1st unit b 2nd cut bobbin

Control circuit Unit side connector Rotation detector Filter chamber Square frame a-91d Frame member Filter frame

Claims

The scope of the claims

[1] In an air conditioner having a storage portion for storing a suction grill on which an air cleaning filter is mounted,

Lifting and lowering means for supporting the suction grille with a suspending string and extending or retracting the suspending string to raise and lower the suction grille together with the filter;

When the suction grill is lifted and stored in the storage section, when one end in the width direction of the suction grill abuts on the storage section, a force is applied until a predetermined time elapses. When the other end is pressed against the other end, the lifting cord is extended by the lifting / lowering means, and the one end contacting the storage portion is lowered by a predetermined distance. Control means for rewinding and raising the entire suction grill;

An air conditioner comprising:

[2] The air conditioner according to claim 1,

When the suction grill is moved up and down, one end of the suction grill in the width direction abuts on the storage portion. When the lifting cord is brought into contact with the storage portion, the lifting cord is extended by the lifting / lowering means, the entire suction grill is lowered by a predetermined distance, and then the lifting cord is again rewound by the lifting / lowering means. An air conditioner characterized by raising the whole by a predetermined distance.

[3] The air conditioner according to claim 2,

The control means causes the lifting / lowering means to feed out the suspension string, lowers the entire suction grill by a predetermined distance, and then causes the lifting / lowering means to rewind the suspension string again, thereby moving the entire suction grill through a predetermined distance. An air conditioner characterized by repeating the ascending / descending movement n times (n≥2).

[4] The air conditioner according to claim 1,

The air conditioner, wherein the elevating means is provided on each of both sides in the width direction of the air conditioner body.

[5] The air conditioner according to claim 1,

Air conditioning equipment characterized by being a ceiling-mounted type that is suspended and installed Place.

[6] A filter chamber with a high-performance filter is provided between the air conditioner body and the suction grill,

Elevating means for elevating and lowering the suction drill is arranged inside a side cover provided on both sides of the air conditioner body,

An air conditioner, wherein the elevating means supports the suction grill with a hanging string.

[7] The air-conditioning apparatus according to claim 6,

The air conditioner, wherein a gap through which the hanging cord is passed is provided in the filter chamber.

[8] The air conditioner according to claim 6,

The air conditioner, wherein the elevating means is attached and fixed to a portion of the air conditioner body that is covered by the side cover.

[9] The air conditioner according to claim 6,

The air conditioner, wherein the elevating means is fixed to the side cover.

[10] The air conditioner according to claim 7,

The filter chamber has a four-sided frame arranged at the suction port of the air-conditioning apparatus main body, and a filter frame for arranging the high-performance filter, and the suspension is provided between the four-sided frame and the filter frame. An air conditioner characterized by having a gap for passing a string.

[11] The air-conditioning apparatus according to claim 8,

The suction grill has a suspension string connecting portion that protrudes toward the air conditioner main body and is connected to the suspension string, and the filter chamber is provided with a gap through which the suspension string connection portion passes. An air conditioner characterized by the above-mentioned.

[12] The storage device has a storage portion for storing a suction grill on which an air purifying filter is mounted, supports the suction grill with a suspending string, and draws out or rewinds the suspending string, thereby obtaining the suction grill. A control method for controlling an air-conditioning apparatus including elevating means for elevating and lowering the filter together with the filter, When the suction grill is lifted and stored in the storage portion, when one end in the width direction of the suction grill abuts on the storage portion, the force also increases until a predetermined time elapses. When the end does not contact, the lifting cord is let out by the lifting / lowering means, the one end in contact with the storage part is lowered by a predetermined distance, and then the suspension cord is rewound again. Raise the entire suction grill

A method for controlling an air conditioner, comprising:

A storage unit for storing a suction grill on which an air purifying filter is placed; supporting the suction grill with a suspension string; and extending or rewinding the suspension string, the suction grill is attached to the filter. In a control program for controlling an air conditioner having an elevating means for elevating and lowering together,

The air conditioner,

When the suction grill is lifted and stored in the storage portion, when one end in the width direction of the suction grill abuts on the storage portion, the force also increases until a predetermined time elapses. When the end does not contact, the lifting cord is let out by the lifting / lowering means, the one end in contact with the storage part is lowered by a predetermined distance, and then the suspension cord is rewound again. Means for raising the entire suction grill

A control program for an air conditioner characterized by functioning as a computer.