JP2009085459A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the fall of dust attached to a filter in an air conditioner comprising the filter. <P>SOLUTION: In the air conditioner 1 comprising a heat exchanger 7 and a blower 9, and further comprises suction openings 15, 17 at the front face 11 and the top face 13 of the air conditioner 1 opposed to the heat exchanger 7, and the filter 33 disposed on the suction openings 15, 17, the filter 33 is vertically movably supported by a filter lifting device 31, and the filter lifting device 31 supports the filter 33 in a state of being inclined at a prescribed angle so that the attachment face 33A of the filter 33 faces upward when the device is lowered. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wall-mounted air conditioner including a filter (suction filter) that can be raised and lowered relative to an air conditioner body.

2. Description of the Related Art Conventionally, in a wall-mounted air conditioner, the air conditioner main body includes a filter that removes dust contained in the air taken in from the room to be conditioned, and an elevating device that detachably holds the filter and drives it to move up and down. In order to clean the filter, there has been proposed one in which the filter is lowered from the air conditioner body to a predetermined position, and the filter can be removed for cleaning at that position (see, for example, Patent Document 1).
JP 2001-248894 A

  In the above conventional air conditioner, when the filter moves up and down, dust attached to the filter may fall off.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to prevent falling off of dust attached to a filter in an air conditioner including a vertically movable filter.

In order to solve the above-described problems, the present invention provides an air conditioner that includes a heat exchanger and a blower, and includes a suction port on a front surface and a top surface of the air conditioner facing the heat exchanger, and the suction port includes a filter. The filter is supported by an elevating frame so that the filter can be raised and lowered, and the elevating frame is in a state where the filter is inclined at a predetermined angle so that the adhering surface of the filter at the time of lowering faces upward. Provided is an air conditioner characterized by being supported.
According to the above configuration, the attachment surface of the filter descends in a state where the attachment surface is inclined at a predetermined angle so as to face upward. Therefore, the adhesion force between the dust attached to the attachment surface of the filter and the attachment surface is, for example, a filter. Is larger than the case of being vertically installed, and the dust can be prevented from falling off, so that the air conditioner can be used without worrying about the falling of the dust.
Here, the adhering surface refers to a surface to which dust sucked from the intake port adheres in the filter.

Moreover, the said structure WHEREIN: The predetermined angle which the said adhering surface of a suction filter inclines is good also as a structure which is 3 degrees or more and 15 degrees or less with respect to a perpendicular direction.
In this case, the predetermined angle at which the adhering surface of the filter is tilted is 3 ° or more with respect to the vertical direction, so that the adhering force between the dust and the adhering surface becomes sufficiently large, and the falling of dust can be prevented. Moreover, since the predetermined angle is 15 ° or less, the width of the air conditioner in the thickness direction does not become too large.
Moreover, the said structure WHEREIN: It is good also as a structure which attached the said raising / lowering frame in the state inclined by the said predetermined angle with respect to the said air conditioning apparatus main body.
In this case, since the lifting frame is attached in a tilted state, the filter can always be kept tilted at a predetermined angle even during lifting.

  According to the present invention, in an air conditioner equipped with a vertically movable filter, it is possible to prevent the dust adhering to the filter from dropping off, so that it can be used without worrying about the falling of the dust.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a wall-hanging type air conditioner, and FIG. 2 is a sectional view thereof. The air conditioner 1 includes a resin-molded air conditioner body 3 and a resin-molded front panel 5 disposed on the front side of the air conditioner body 3, and the air conditioner body 3 is, as shown in FIG. A heat exchanger 7 having a substantially C-shaped cross section and a blower 9 disposed inside the heat exchanger 7 are provided inside. The air conditioner main body 3 has suction ports 15 and 17 on the front surface 11 and the top surface 13 (see FIG. 3), and sucks from the suction ports 15 and 17 on the front surface 11 and the top surface 13 by driving the blower 9. The indoor air is passed through the heat exchanger 7, and the heat-exchanged air is blown into the room from an outlet 19 provided downstream of the blower 9 of the air conditioner body 3.

  The blower outlet 19 is surrounded by a scroll part 21 and a tongue part 22, and a plurality of vertical blades 23 for changing the wind direction are arranged on the outlet side of the scroll part 21, and the vertical blades 23 are arranged in the scroll part 21. Are connected by a link member 24 and connected to a vertical blade drive motor (not shown). A horizontal flap 25 is connected to a flap drive motor (not shown). The air outlet 19 can be opened and closed by opening and closing the air outlet 19 according to the turning posture of the flap 25, and the air blowing direction from the air outlet 19 can be set up and down depending on the operating conditions. The blowing direction of the air blown out from the air outlet 19 can be set in the left-right direction according to the operating conditions.

  In this Embodiment, the filter raising / lowering apparatus 31 is arrange | positioned between the suction inlet 15 of the front surface 11 of the air conditioning apparatus main body 3, and the front panel 5 mentioned above. The filter lifting / lowering device 31 lifts and lowers the filter 33. The filter 33 covers the suction port 15 of the front surface 11 and the suction port 17 of the top surface 13 at the same time, and is in the indoor air sucked from the suction ports 15 and 17. To collect dust. 3 shows a state in which the front panel 5 is removed and the filter lifting device 31 is lowered to lower the filter 33. FIG. 4 shows the filter lifting device 31 itself. As shown in FIG. 4, the filter elevating device 31 includes resin-formed elevating frames 35 to 38 that are distinguished in 1 to 4 stages, and when all the elevating frames 35 to 38 are pulled out, the state shown in FIG. 3 is obtained. When the filter 33 is lowered and all the lifting frames 35 to 38 are pulled in, the state shown in FIG. 2 is obtained, and the filter 33 is stored so as to cover the suction ports 15 and 17. Here, as shown in FIG. 2, the filter lifting / lowering device 31 is attached to the front surface 11 of the air conditioner main body 3 so that the surface facing the suction port 15 of the lifting frames 35 to 38 faces upward. The elevating frames 35 to 38 move up and down while keeping the filter 33 inclined at a predetermined angle with respect to the vertical direction.

As shown in FIG. 4, the first-stage lifting frame 35 is connected to the inner side of the frame body 35A by reinforcing girder portions 35B extending left and right and up and down. A pair of letter-shaped guides 35C is provided. Similarly, the second elevating frame 36 connects the inside of the frame body 36A with reinforcing girder portions 36B extending left and right and up and down, and a pair of substantially U-shaped cross sections on both sides of the frame body 36A. The guide 36C can be stored in the guide 35C groove of the first-stage lifting frame 35. The third-stage lifting frame 37 is connected to the inside of the frame body 37A by reinforcing girder portions 37B extending left and right and up and down, and a pair of guides 37C having a substantially U-shaped cross section on both sides of the frame body 37A. The guide 37C can be stored in the guide 36C groove of the second-stage lifting frame 36. Further, the fourth elevating frame 38 in the final stage is connected to the inside of the frame body 38A by reinforcing girder portions 38B extending left and right and up and down, and the edge portions 38C on both sides of the frame body 38A are 3 It can be stored in the guide 37C groove of the lifting frame 37 at the stage.
Here, a guide rib 38 </ b> G extending in the vertical direction is formed at an end edge portion 38 </ b> C of the fourth (lowermost) lift frame 38. The guide rib 38G is provided at a position corresponding to the inner side surface 37C1 of the guide 37C of the third-stage lifting frame 37. When the edge portion 38C of the fourth-stage lifting frame 38 is housed in the guide 37C groove of the third-stage lifting frame 37, the guide rib 38G is guided to the inner side surface 37C1 of the guide 37C. Therefore, the end edge portion 38C of the fourth-stage lifting frame 38 can be smoothly moved and stored in the guide 37C groove of the third-stage lifting frame 37. The guide rib 38G also functions as a reinforcing rib that reinforces the end edge portion 38C of the fourth-stage lifting frame 38.

  At the center of each lifting frame 35-38, vertically extending guides 35D-38D are provided. When the lifting frames 35-38 are lifted, the guides 35D are housed in the guides 36D, and the guides 36D are guides. The guide 37D is stored in the guide 38D, and can be stored in a nested manner.

A filter 33 is attached to the lower end of the fourth-stage lifting frame 38 in a state of being divided into left and right parts, as indicated by a broken line in FIG. As shown in FIG. 5, the filter 33 includes a pre-filter 60 and a disposable filter material 61 that is attached to the pre-filter 60 in a state of covering substantially the entire front surface of the pre-filter 60.
The prefilter 60 is connected to the inside of the filter support frame 62 by a girder portion 63 extending left and right and up and down, and a prefilter material 66 is attached to an opening formed by the filter support frame 62 and the girder portion 63. Yes. In this configuration, the pre-filter 60 is integrally formed of a resin material and has enough elasticity to be bent into a substantially L shape.
A hook mechanism 70 for fixing the disposable filter material 61 to the prefilter 60 is provided on each of the upper frame portion 62A and the lower frame portion 62B of the filter support frame 62. The hook mechanism 70 includes a protruding portion 71 formed on the inner side of the filter support frame 62 and a pressing portion 72 that bends in a hinge shape having a fitting hole 74 that fits into the protruding portion 71. When the disposable filter material 61 is fixed to the pre-filter 60, the locking hole 64 of the disposable filter material 61 is passed through the projection 71, the holding portion 72 is bent, and the fitting hole 74 is fitted into the projection 71. Thereby, the disposable filter material 61 can be easily fixed to the pre-filter 60.
In addition, two connection holes 67 for connecting the filter 33 to the elevating frame 38 are formed in the approximate center of the lower frame portion 62B of the filter support frame 62. In addition, a wide portion 62C1 having a wider bottom is formed in the vertical frame portion 62C of the filter support frame 62.

On the other hand, as shown in FIG. 4, a pressing piece 38 </ b> E that presses the middle part of the filter 33 is provided at the upper end part of the fourth stage lifting frame 38. The pressing piece 38E supports the wide portion 62C1 by inserting the wide portion 62C1 of the filter support frame 62 below the pressing piece 38E. In this configuration, the pressing piece 38E is formed such that the lower end portion of the pressing piece 38E has a larger gap with the frame body 38A than the upper end portion. For this reason, when the filter 33 is attached to the fourth-stage lifting frame 38, the upper end portion of the filter 33 can be easily inserted below the pressing piece 38E, and the attachment work can be simplified. .
Further, since the pressing piece 38E presses the substantially middle portion of the filter 33, the filter 33 is prevented from falling to the side away from the lifting frames 35 to 38, and when the lifting frames 35 to 38 are all retracted, the filter 33 Is stored so as to cover the inlets 15 and 17 smoothly.
Further, a connecting piece 38 </ b> F that fits into the connecting hole 67 is formed at the lower end of the fourth-stage lifting frame 38. The connecting piece 38F is formed to be approximately the same size as the connecting hole 67, and the connecting piece 38F can be fitted into the connecting hole 67 with a small force. In this configuration, the filter 33 is inserted below the pressing piece 38E provided in the fourth-stage lifting frame 38, and the filter 33 is connected to the connecting piece 38F provided at the lower end of the fourth-stage lifting frame 38. The filter 33 can be held by the elevating frames 35 to 38 by a simple operation of fitting the connecting hole 67 provided in the (prefilter 60).
Note that the lifting frames 35 to 38 constituting the filter lifting and lowering device 31 have both upper ends 35F of the first stage frame body 35A on the upper ends on both sides of the front surface 11 of the air conditioner body 3 as shown in FIG. It is attached via a fastener such as (not shown). For example, both upper ends 35 </ b> F are attached to either or both of the upper frame 48 and the lower frame 47 constituting the air conditioner main body 3.
The filter 33 attached to the fourth elevating frame 38 is inclined substantially parallel to the elevating frame 38, and is attached to be inclined so that the adhering surface 33A facing the suction port 15 faces upward in the filter 33. ing. A large amount of dust adheres to the attachment surface 33A.

Next, the mechanism of the filter lifting / lowering device 31 will be described.
FIG. 6 is a perspective view of the filter lifting device 31 as viewed from the front side, and FIG. 7 is a perspective view of the filter lifting device 31 as viewed from the back side.
As shown in FIG. 6, a filter elevating motor 39 composed of a DC stepping motor capable of rotating in the forward and reverse directions for raising and lowering the elevating frames 35 to 38 is attached to the right guide 35C of the first frame 35A. Yes. As shown in FIG. 7, the output shaft of the filter lifting / lowering motor 39 is connected to a connecting shaft 51 provided at the lower end of the first-step lifting frame 35 via a gear or the like. Pinions 53 are respectively provided at both ends of the connecting shaft 51, and the pinions 53 mesh with racks 55 formed on the back surface of the second-stage lifting frame 36.
In addition, one end of the first belt 41 is fixed to the lower end portion of the first-stage lifting frame 35. As shown in FIG. 6, the first belt 41 is wound around an upper roller 56 formed at the upper end of the second-stage lifting frame 36, and extends downward on the front surface of the second-stage lifting frame 36. The other end of the first belt 41 (not shown) is wound around a lower roller 57 formed at the lower end of the second-stage lifting frame 36 and extends upward on the rack 55. It is connected to the lower end of the first stage lifting frame 35. Further, as shown in FIG. 4, a substantially intermediate portion of the first belt 41 is fixed to a belt fixing portion 37 </ b> E formed at the upper end portion of the third-stage lifting frame 37.

Further, as shown in FIG. 7, one end of the second belt 42 disposed on the inner side of the first belt 41 is fixed to the lower end portion 36 </ b> E of the second-stage lifting frame 36. As shown in FIG. 6, the second belt 42 is wound around an upper roller 58 formed at the upper end of the third-stage lifting frame 37 and extends downward on the front surface of the third-stage lifting frame 37. The other end of the second belt 42 is wound around a lower roller 59 formed at the lower end of the third-stage lifting frame 37 as shown in FIG. And is connected to the lower end 36E of the second-stage lifting frame 36. Further, as shown in FIG. 4, the substantially middle portion of the second belt 42 is fixed to a belt fixing portion 38 </ b> H formed at the upper end portion of the fourth-stage lifting frame 38.
When the filter elevating motor 39 is rotated forward, the second elevating frame 36 is lowered by the meshing of the rack 55 and the pinion 53. Here, since the substantially middle portion of the first belt 41 wound around the second-stage lifting frame 36 is fixed to a belt fixing portion 37E formed at the upper end of the third-stage lifting frame 37, the second stage As the eye lifting frame 36 is lowered, the third stage lifting frame 37 is also lowered. Further, since the substantially middle portion of the second belt 42 wound around the third-stage lifting frame 37 is fixed to a belt fixing portion 38H formed at the upper end of the fourth-stage lifting frame 38, the third-stage lifting frame 37 As the elevating frame 37 is lowered, the fourth elevating frame 38 is also lowered.
As a result, when the filter lifting / lowering motor 39 is driven to rotate in the forward direction, as shown in FIG. 3, all the lifting frames 35 to 38 are pulled out, and the filter 33 is lowered. In this configuration, the filter elevating device 31 can draw the elevating frames 35 to 38 to the outside of the main body 3 at least as long as the length of the filter 33. In other words, the filter lifting and lowering device 31 can draw the lifting frames 35 to 38 to the outside of the main body 3 by a length H that the substantially entire surface of the filter 33 is exposed to the outside of the main body 3. According to this configuration, when the filter 33 is attached / detached, substantially the entire surface of the filter 33 is exposed to the outside, so that the attachment / detachment work of the filter 33 can be performed very easily. Furthermore, since the fourth stage, that is, the lowermost elevating frame 38 is lowered to a lower position as compared with the conventional one, even a short user can easily attach and detach the filter 33.
On the other hand, when the filter elevating motor 39 is rotated in the reverse direction, the second elevating frame 36 is pulled upward by the meshing of the rack 55 and the pinion 53, and the first belt 41 and the second belt 42 3 The stage lifting frame 37 and the fourth stage lifting frame 38 are pulled upward. Thus, when the filter lifting / lowering motor 39 is driven to rotate in the reverse direction, as shown in FIG. 2, all the lifting frames 35 to 38 are pulled in and the filter 33 is stored.

In this configuration, as described above, the filter lifting / lowering device 31 includes the lifting frames 35 to 38 that are distinguished in one to four stages in order to expose the substantially entire surface of the filter 33 to the outside of the main body 3. Yes. Here, for the purpose of exposing substantially the entire surface of the filter 33 to the outside of the main body 3, not only four stages but also a three-stage or five-stage structure may be considered. However, when the filter lifting / lowering device is composed of three-stage lifting frames, the height of the lifting frames at each stage is increased, so that the air conditioner main body that accommodates these lifting frames is increased in the height direction.
On the other hand, when the filter elevating device is composed of five elevating frames, the mechanism for raising and lowering each elevating frame is complicated and each elevating frame is stacked in five stages. It becomes larger in the thickness direction.
On the other hand, in this structure, since the filter raising / lowering device 31 was comprised with the four steps raising / lowering frames 35-38, compared with the conventional thing, the air conditioning apparatus main body 3 is not enlarged in a height direction and a thickness direction. A filter lifting / lowering device 31 can be disposed in the main body 3.

  Further, in the state where all the lifting frames 35 to 38 are pulled out, as shown in FIG. 3, the upper edge of the first-stage frame body 35A is lowered and maintained to a predetermined position. The electric dust filter 40 is mounted through a space formed above the edge. As shown in FIG. 2, the electric dust removing filter 40 is mounted between the heat exchanger 7 and the filter 33, and can collect dust in the indoor air that has passed through the filter 33.

Since the filter 33 is fixed to the lower end of the fourth-stage lifting frame 38 as described above, the lifting frames 35 to 38 are raised, and the filter 33 enters the top surface 13 from the front surface 11 of the air conditioner body 3. In the process, the upper part of the filter 33 is curved and enters the top surface 13 from the front surface 11.
As shown in FIG. 2, the top surface 13 of the air conditioner main body 3 includes an upper part 3A of the air conditioner main body 3 and a top panel 43 that is detachably mounted on the upper part 3A with a gap δ. In the state in which the upper part of the filter 33 described above is curved and enters the gap δ and the lifting frames 35 to 38 are all retracted (FIG. 2), the filter 33 is formed on the front surface 11 and the top surface 13. Each inlet 15 and 17 is covered simultaneously.

  In the present embodiment, as shown in FIG. 3, with respect to the front edge portion of the top panel 43, the direction changing portion at the top of the filter 33 corresponding to each filter 33, that is, the filter 33 is connected to the top surface from the front surface 11. The filter guide 43A is integrally provided so that the upper portion of the filter 33 can be smoothly guided from the front surface 11 to the top surface 13 so as to project to a portion whose direction is changed to 13. Further, as shown in FIG. 2, the tip of the filter 33 after the direction change is smoothly guided to the lower surface of the top panel 43, and on the lower surface of the girder 43 </ b> B extending in the front-rear direction of the top panel 43. The curved rib 45 is provided integrally. In this configuration, the upper portion of the filter 33 is smoothly guided from the front surface 11 to the top surface 13 of the air conditioner main body 3 by the cooperation of the filter guide portion 43A and the curved rib 45, thereby allowing entry.

FIG. 8 is a cross-sectional view showing a stage where the elevating frames 35 to 38 start to descend. FIG. 9 is a cross-sectional view showing a stage where the lifting frames 35 to 38 have been lowered.
As shown in FIG. 2, the front panel 5 is closed to the front surface 11 of the air conditioner main body 3 without a gap so as to completely cover the filter elevating device 31 when the air conditioner 1 is not in operation. And in the step of operating the air conditioner 1 or the step of operating the filter lifting device 31 and lowering the lifting frames 35 to 38, as shown in FIGS. The panel 5 is pushed forward, and a clearance for air suction or a clearance for lowering the elevating frames 35 to 38 is secured.

As described above, the filter lifting / lowering device 31 is attached to the front surface 11 of the air conditioner main body 3 so that the surface of the lifting frames 35 to 38 facing the suction port 15 faces upward. Specifically, as shown in FIG. 9, the filter lifting / lowering device 31 is attached such that the attachment surface 33A of the filter 33 supported by the lifting frames 35 to 38 is inclined at an angle A with respect to the vertical direction. .
This angle A is set to an angle at which dust attached to the attachment surface 33A of the filter 33 does not fall off from the attachment surface 33A when descending the lifting frames 35 to 38. In this embodiment, the angle A is 3 °. Yes, preferably 3 ° or more and 15 ° or less.
Moreover, since the filter 33 is inclined at an angle A so that the filter 33 faces upward, there is an advantage that the user can easily attach and detach the filter 33.

Here, the adhesion force between the dust adhered to the filter 33 and the adhesion surface 33A will be described.
As shown in FIG. 9, in the state where the lifting frames 35 to 38 are all pulled out, the dust attached to the attachment surface 33A receives gravity G, and the attachment surface 33A is attached to the attachment surface at an angle A with respect to the vertical direction. Since 33A is inclined so as to face upward, gravity G is divided into a force Y that attracts dust downward along the slope of the attachment surface 33A and a force X that causes dust to be pressed perpendicularly to the attachment surface 33A. Disassembled. Since the dust X is pressed against the filter 33 by the force X generated by the inclination of the attachment surface 33A, for example, compared with the case where the attachment surface 33A is attached vertically, the dust is disposed between the attachment surface 33A and the dust. Since the adhesion force is increased, it is possible to prevent the dust from dropping off from the adhesion surface 33A when the filter 33 moves up and down.
Further, by setting the angle A to 3 ° or more, a more effective adhesion force can be obtained, and the dust can be prevented from falling off from the adhesion surface 33A. As the angle A is larger, there is an effect of preventing the dust from falling off the adhesion surface 33A. However, when the angle A exceeds 15 °, there arises a problem that the width in the thickness direction of the air conditioner 1 exceeds an allowable value. . For this reason, the upper limit of the angle A is preferably 15 ° or less.
Furthermore, even when the blower of the air conditioner 1 is stopped and the lifting frames 35 to 38 are all retracted, the attachment surface 33A is inclined, so that the falling off of dust can be prevented.

  Thus, in the air conditioner 1 provided with the filter 33 at the suction ports 15 and 17, the filter 33 is supported by the elevating frames 35 to 38 and can be moved up and down, and the attachment surface 33 </ b> A of the filter 33 at the time of lowering faces upward. Since the filter 33 is tilted by a predetermined angle as described above, a force X is generated by which dust is pressed perpendicularly to the attachment surface 33A, and the adhesion force between the dust attached to the attachment surface 33A of the filter 33 and the attachment surface 33A is large. This prevents dust from falling off.

Next, the electrical configuration of the air conditioner 1 will be described.
FIG. 10 is a diagram illustrating a configuration of a control system of the air conditioning apparatus 1. FIG. 10 shows an air conditioner including an air conditioner 1, an outdoor unit 87 connected to the air conditioner body 3 that is an indoor unit, and a remote controller (remote controller) 50 for operating the air conditioner body 3 by a user. The control system of the whole apparatus 1 is illustrated.
As shown in FIG. 10, the air conditioner main body 3 includes a microcomputer 101 that controls each part of the air conditioner 1, a ROM 102 that stores a program executed by the microcomputer 101, parameters that determine the processing of the microcomputer 101, and the microcomputer And a memory 103 that temporarily stores programs, data, and the like processed by the computer 101. The microcomputer 101 reads the program stored in the ROM 102, develops and executes it in the work area formed in the memory 103, and controls the air conditioner 1 by processing various data stored in the ROM 102. Realize the function.

The microcomputer 101 includes a valve opening / closing control unit 104 that controls the opening / closing and opening of an electromagnetic valve (not shown) or an electric expansion valve (not shown) disposed in a refrigerant circuit (not shown) of the air conditioner 1. The suction temperature sensor 105 that detects the intake air temperature (the temperature of the conditioned room air) sucked by the air conditioner body 3, the heat exchanger temperature sensor 106 that detects the temperature of the heat exchanger 7 provided in the air conditioner body 3, and the above A refrigerant pressure sensor 107 for detecting the pressure in the refrigerant pipe and a display unit 108 for displaying the operating state of the air conditioner 1 by turning on the LED are respectively connected.
The microcomputer 101 controls the valve opening / closing control unit 104 based on the temperature detected by the suction temperature sensor 105 and the heat exchanger temperature sensor 106, the refrigerant pressure detected by the refrigerant pressure sensor 107, etc. Air conditioning operation is performed by opening and closing the expansion valve.

Furthermore, motor drive circuits 109 to 112 are connected to the microcomputer 101. The motor drive circuits 109 to 112 supply power to the fan motor 113, the filter lifting / lowering motor 39, the vertical blade drive motor 115, and the flap drive motor 116 and output control pulses to drive these motors. The motor drive circuit 109 drives the fan motor 113 connected to the blower 9 and causes the blower 9 to blow air. The motor drive circuit 110 operates a filter lifting / lowering motor 39 that drives the filter lifting / lowering device 31.
Further, the air conditioner main body 3 is provided with a limit switch 125 that is pressed by the elevating frames 35 to 38 at the storage position of the filter 33. The limit switch 125 and the motor drive circuit 110 and A filter lifting / lowering device 31 is configured including a filter lifting / lowering motor 39.

The motor drive circuit 111 drives the vertical blade drive motor 115 connected to the vertical blade 23 to swing the vertical blade 23. The motor drive circuit 112 drives the flap drive motor 116 connected to the flap 25 to rotate the flap 25.
The microcomputer 101 is connected to a motor drive circuit 88 provided in the outdoor unit 87. The motor drive circuit 88 drives a motor (not shown) that drives the compressor 89.

The microcomputer 101 is connected to a light receiving unit 120 that receives an infrared signal transmitted from the remote controller 50, and the microcomputer 101 controls each unit of the air conditioner 1 according to the infrared signal received by the light receiving unit 120. .
Here, the remote controller 50 includes a microcomputer 65 that controls each part of the remote controller 50, and a light emitting unit 86 connected to the microcomputer 65.
The microcomputer 65 detects the operation of each button such as an operation button, a stop button, and a temperature setting button provided on the switch panel 83, generates an operation signal corresponding to the operated button, and outputs the operation signal to the light emitting unit 86. In addition, the display state of the LCD panel 52 is updated according to the operation content. The light emitting unit 86 includes a light source such as an LED that emits infrared light, and causes the light source to emit light according to an operation signal input from the microcomputer 65.

When the infrared signal received by the light receiving unit 120 is an operation signal indicating the operation of the operation button, the microcomputer 101 starts the operation of the air conditioner 1 including the air conditioner body 3 according to the operation signal. Start air conditioning operation.
That is, the microcomputer 101 drives the compressor 89 by the motor drive circuit 88 and controls the valve opening / closing control unit 104 to open / close and adjust the opening of each valve included in the air conditioner 1 and the outdoor unit 87. Then, the air conditioner 1 is allowed to start a cooling operation or a heating operation. After the start of the cooling operation or the heating operation, the microcomputer 101 calculates the target set temperature set by operating the temperature setting button of the remote controller 50 and the intake air temperature (the temperature in the conditioned room) detected by the intake temperature sensor 105. In comparison, the motor drive circuit 88 is controlled when the intake air temperature is lower than the target set temperature by a predetermined temperature during the cooling operation and when the intake air temperature is higher than the target set temperature by the heating operation. Then, the compressor 89 is stopped and the thermo-off is performed. When the temperature of the intake air rises from the target set temperature during the cooling operation or when the temperature of the intake air falls below the target set temperature during the heating operation, the motor drive circuit 88 is controlled to operate the compressor 89, Turn on the thermo.

In addition, when the thermostat is turned on, the microcomputer 101 detects that the temperature of the heat exchanger 7 detected by the heat exchanger temperature sensor 106 or the pressure in the refrigerant pipe detected by the refrigerant pressure sensor 107 exceeds a preset range. In this case, the motor drive circuit 88 is controlled to stop the compressor 89, and the display unit 108 notifies the occurrence of abnormality.
In addition, the microcomputer 101 controls the motor driving circuit 110 to drive the filter lifting / lowering motor 39 by operating the ascending button 84 or the descending button 85 provided on the switch panel 83 of the remote controller 50. Thereby, the filter lifting / lowering device 31 operates, and the lifting / lowering frames 35 to 38 are raised or lowered to raise / lower the filter 33.

  Here, the display unit 108 is provided with a filter lamp 130, and the filter lamp 130 notifies the cleaning time of the filter 33. That is, the filter lamp 130 is turned on when the cumulative time of the air conditioning operation reaches a predetermined time from when the filter 33 was last cleaned, or every predetermined period (for example, three months), and the filter lamp 130 is cleaned. To be notified. Upon receiving this notification, the user operates the lowering button 85 of the remote controller 50 to lower the filter 33 as described above, and removes the filter 33 and cleans it. Thereafter, the user attaches the filter 33 to the elevating frames 35 to 38 and operates the ascending button 84 to store the filter 33 in the air conditioner main body 3. Thus, when the filter 33 returns to the state accommodated in the air conditioner main body 3, the filter lamp 130 is turned off.

  In addition, when the lowering operation of the filter 33 is performed while the filter lamp 130 is turned off, the filter lamp 130 is turned on, and the filter 33 is returned to the state in which it is housed in the air conditioner body 3. Sometimes goes off. At this time, the accumulated time of the air-conditioning operation counted as the cleaning time or the start time of the predetermined period is reset, and the count starts from the initial value.

Next, as the operation of the present embodiment, the raising / lowering operation of the filter 33 will be described.
FIG. 11 is a flowchart showing the up / down control process of the filter 33. The ascending / descending control of the filter 33 described below is performed only when the air conditioning apparatus 1 stops the air conditioning operation. During the air conditioning operation, the remote controller 50 controls the filter 33. Even if a lowering instruction is given, the instruction is canceled. Furthermore, the air-conditioning operation is prohibited while the ascending / descending control process of the filter 33 is being performed.

  As shown in FIG. 11, in the filter ascending / descending control process, the microcomputer 101 stands by until an operation of the descending button 85 of the remote controller 50 is received (step S1: No). When the operation of the lowering button 85 is received (step S1: Yes), the drive pulse number Pc is initialized (step S2). The drive pulse number Pc is a count value of the drive pulse output to the filter lifting / lowering motor 39, and a moving amount such as a lowering amount or an increasing amount of the filter 33 is specified based on the driving pulse number Pc.

Next, the microcomputer 101 controls the motor drive circuit 110 to sequentially output drive pulses to the filter lifting / lowering motor 39, drives the filter lifting / lowering motor 39 to start the lowering of the filter 33 (step S3), and also lifts and lowers the filter. In parallel with the drive control of the motor 39, the number of drive pulses Pc output to the filter lifting / lowering motor 39 is counted (step S4).
After starting the descent of the filter 33 in this way, the microcomputer 101 determines whether or not the drive pulse number Pc has reached the descent drive pulse number Pd (step S5). The descending drive pulse number Pd indicates the drive pulse number of the filter lifting motor 39 required for lowering the filter 33 housed in the air conditioner body 3 to the lowest lowered position Xa. By determining whether or not the number of descending drive pulses Pd has been reached, it is specified whether or not the filter 33 has reached the lowest position Xa.

As a result of the determination in step S5, when the drive pulse number Pc reaches the descending drive pulse number Pd, that is, when the filter 33 reaches the lowest descending position Xa (step S5: Yes), the microcomputer 101 performs the motor drive circuit 110. Is controlled to stop the output of the drive pulse to the filter lift motor 39, and the drive of the filter lift motor 39 is stopped (step S6).
Further, the microcomputer 101 stores the drive pulse number Pc when the filter lifting / lowering motor 39 is stopped in the memory 103 as the stop pulse number Ps (step S7), and moves the filter 33 based on the stop pulse number Ps. It is possible to specify the amount of movement when stopping.
As a result of the above processing, as shown in FIG. 12A, the filter 33 is held in a state where it is lowered from the storage position Xb of the air conditioner body 3 to the lowest lowered position Xa and the entire filter 33 is exposed. The Since the entire filter 33 is thus exposed, the filter 33 can be easily and easily removed.

When the filter 33 stops at the lowest lowered position Xa, the filter 33 is not lowered any further, so the microcomputer 101 waits for an operation of the ascending button 84 of the remote controller 50, which is an ascending instruction of the filter 33 (step S8).
And when operation of the raising button 84 is received (step S8: Yes), the microcomputer 101 starts the next process in order to raise the filter 33 and store it in the air conditioning apparatus main body 3.
In other words, the microcomputer 101 sets the ascending drive pulse number Pu that defines the number of drive pulses of the filter lifting motor 39 required until the filter 33 is housed in the air conditioner body 3 from the current stop position (step S9).

More specifically, when the filter 33 is driven to rise, a larger rotational torque is required than when the filter 33 is lowered, and slipping occurs between the filter lifting motor 39 and the lifting frames 35 to 38. Even if the filter lift motor 39 is driven with the same number of pulses as the filter 33 and the filter 33 is raised, the amount of increase is not sufficient, and the filter 33 cannot be completely returned to the state of being housed in the air conditioner body 3. There is a thing.
Therefore, in the present embodiment, in order to obtain a sufficient amount of increase when the filter 33 is raised, the margin pulse number Pm as a margin is added to the number of pulses at the time of lowering, that is, the number of pulses Ps when stopped. The number of pulses is set to the number of rising drive pulses Pu. As a result, even if some slipping or the like occurs when the filter 33 is raised, the filter 33 can be completely returned to the state in which it is housed in the air conditioner body 3.

  When the rising drive pulse number Pu is set as described above, the microcomputer 101 initializes the drive pulse number Pc (step S10), and then sequentially outputs the drive pulses to the filter lift motor 39, thereby causing the filter lift motor 39 to move. The filter 33 is driven to start raising the filter 33 (step S11), and the drive pulse number Pc output to the filter lifting / lowering motor 39 is counted (step S12).

After starting to raise the filter 33, the microcomputer 101 detects whether or not the filter 33 has returned to the stored state by detecting whether or not the filter 33 is in contact with the limit switch 125 and pressed. (Step S13).
If the limit switch 125 is not pressed (step S13: No), the microcomputer 101 continues to raise the filter 33. If the limit switch 125 is pressed (step S13: Yes), the filter 33 is air conditioned. In order to show that it is stored in the apparatus main body 3, the filter raising / lowering motor 39 is stopped (step S14).

  At this time, even if the filter lifting / lowering motor 39 is stopped at the timing when the filter 33 comes into contact with the limit switch 125, there is no compensation that the filter 33 is accurately positioned at the storage position Xb of the air conditioner body 3. Therefore, when the filter 33 is stored in the air conditioner body 3, the limit switch 125 is pressed in this embodiment so that the filter 33 is always located at the storage position Xb every time (so-called zero point return). After the detection, the filter elevating motor 39 is further driven to rise and so-called tightening is performed.

That is, after initializing the drive pulse number Pc (step S15), the microcomputer 101 drives the filter lift motor 39 upward (step S16), and counts the drive pulse number Pc at this time (step S17). The raising / lowering drive of the filter raising / lowering motor 39 is continued until the drive pulse number Pc reaches the winding pulse number Pk.
When the drive pulse number Pc reaches the tightening pulse number Pk and the tightening is finished (step S18: Yes), the storage of the filter 33 in the storage position Xb of the air conditioner body 3 is completed. In order to indicate this, the filter lifting / lowering motor 39 is stopped (step S19), and the process is terminated.
As a result, as shown in FIG. 12B, the filter 33 rises from the lowest lowered position Xa and reliably returns to the storage position Xb through the tightening process.

After the start of the lowering of the filter 33, the microcomputer 101 performs the following process so that the lowering of the filter 33 can be quickly stopped by the operation of the remote controller 50.
That is, in step S5, when the drive pulse number Pc has not reached the descending drive pulse number Pd, that is, when the filter 33 has not yet reached the lowest lowered position Xa (step S5: No), the microcomputer 101 It is determined whether or not the operation of the 50 down button 85 or the up button 84 has been received (step S20).
When the operation of the lowering button 85 or the raising button 84 of the remote controller 50 is received (step S20: YES), the microcomputer 101 controls the motor driving circuit 110 to stop driving pulse output to the filter lifting / lowering motor 39. Then, the descent of the filter 33 is quickly stopped (step S21). At this time, the microcomputer 101 stores the stop drive pulse number Pc in the memory 103 as the stop pulse number Ps in order to record the stop position of the filter 33 (step S22).

By the above processing, as shown in FIG. 12C, when the user operates the up button 84 or the down button 85 of the remote controller 50 after the start of the descent of the filter 33, the descent of the filter 33 is performed by this operation. Will be promptly stopped. As a result, when the descending filter 33 is likely to collide with furniture or the like, the user operates the remote controller 50 to stop the descent of the filter 33, thereby preventing collision with the furniture or the like. .
At this time, since the filter 33 can be stopped by operating either the up button 84 or the down button 85 of the remote controller 50, even when the user rushes to operate, an operation error is prevented, and the filter is more reliably and quickly performed. 33 can be stopped.

When the filter 33 is stopped in the middle of lowering, the microcomputer 101 keeps the intermediate stopped state until the operation of the lowering button 85 or the raising button 84 of the remote controller 50 is received (step S23).
When the operation of the lowering button 85 is received (step S23: (1)), the microcomputer 101 stops at the time of stopping so as to lower the filter 33 from the current intermediate stop position Xc toward the lowest lowering position Xa. After resetting the hour pulse number Ps to the drive pulse number Pc (step S24), the processing procedure is returned to step S3. Thereby, as shown in FIG.12 (C), the fall of the filter 33 is restarted from the intermediate stop position Xc.
When the operation of the ascending button 84 is received (step S23: (2)), the microcomputer 101 moves the processing procedure to the above step S9 and performs processing for raising the filter 33 from the intermediate stop position and storing it. As a result, the filter 33 is raised from the intermediate stop position Xc as shown in FIG.

  As described above, since the lowering of the filter 33 is stopped halfway, it can be lifted as it is and stored in the air conditioner main body 3, so that the user lowers the filter 33 in order to check the degree of contamination of the filter 33. In such a case, the filter 33 is pulled out and stopped to such an extent that the dirt can be confirmed. If it is dirty, the filter 33 is lowered to the lowest position Xa. If not dirty, the filter 33 is raised to raise the air. It can also be used to return to the storage position Xb of the harmony device body 3.

  In addition, the said embodiment is one aspect to which this invention is applied, and of course, this invention is not limited to the said embodiment. For example, in the above-described embodiment, the filter 33 is attached to the filter lifting / lowering device 31 attached at an inclination, so that the attachment surface 33A faces upward, but the filter 33 is inclined to the vertical filter lifting / lowering device 31. Of course, the filter elevating device 31 may be inclined upward from the vertical when descending, and other detailed configurations can be arbitrarily changed.

1 is a perspective view of a wall-hanging air conditioner according to an embodiment of the present invention. It is sectional drawing of an air conditioning apparatus. It is a figure which shows the state which removed the front panel, moved down the filter raising / lowering apparatus, and lowered the filter. It is a figure which shows the structure of a filter raising / lowering apparatus. It is a disassembled perspective view of a filter. It is the perspective view which looked at the filter raising / lowering apparatus from the front side. It is the perspective view which looked at the filter raising / lowering device from the back side. It is a figure which shows the step which act | operated the filter raising / lowering apparatus and the raising / lowering frame began to fall. It is a figure which shows the step which act | operated the filter raising / lowering apparatus and the raising / lowering frame fell completely. It is a figure which shows the electrical constitution of an air conditioning apparatus. It is a flowchart of filter lowering / raising control. It is a figure which shows typically the raising / lowering operation | movement of a filter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus 3 Air conditioning apparatus main body 5 Front panel 7 Heat exchanger 9 Blower 11 Front surface 13 Top surface 15 Suction port 17 Suction port 31 Filter lifting device 33 Filter 33A Adhesion surface 35-38 Lifting frame 36 Lifting frame 39 Filter lifting motor 41 1st belt 42 2nd belt 51 Connecting shaft 53 Pinion 55 Rack

Claims (3)

The air conditioner main body includes a heat exchanger and a blower, and includes a suction port on a front surface and a top surface of the air conditioner facing the heat exchanger, and an air conditioner including a filter in the suction port.
The filter is supported by an elevating frame so that the filter can freely move up and down, and the elevating frame supports the filter in a state where the filter is inclined at a predetermined angle so that an adhesion surface of the filter when being lowered faces upward.
An air conditioner characterized by. The air conditioner according to claim 1, wherein
The predetermined angle at which the attachment surface of the filter is inclined is 3 ° or more and 15 ° or less with respect to the vertical direction,
An air conditioner characterized by. The lifting frame is attached in a state inclined at the predetermined angle with respect to the air conditioner main body,
The air conditioner according to claim 1 or 2.

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