JP4417103B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner including a filter chamber including a high performance filter between an air conditioner body and a suction grill.

2. Description of the Related Art Conventionally, there is known a ceiling-suspended air conditioner configured to be suspended from an indoor ceiling using a suspension bolt (for example, Patent Document 1). In this type of air conditioner, a suction grill is provided on the bottom surface of the air conditioner main body (a surface facing the floor surface of the building), and a filter is provided on the suction grill. The filter provided in the suction grill is periodically removed by a hand of an operator or the like and cleaned, so that the performance as an air conditioner is sufficiently exhibited. In addition, this type of air conditioner may be provided with a filter chamber containing a filter (for example, a long life filter) other than the filter provided on the suction grill (for example, Patent Document 2).
JP-A-9-275251 Japanese Patent Application Laid-Open No. 11-101497

  However, in order to perform filter cleaning, an operator or the like must perform the work of removing the filter disposed on the suction grille from the air conditioner body near the ceiling surface, which is very complicated. In addition, when removing the suction grille, it is necessary to ride on a table or the like, which is not preferable. Further, it is not preferable that this type of workability becomes more complicated depending on the presence or absence of the filter chamber.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an air conditioner that can easily perform filter cleaning of a suction grill regardless of the presence or absence of a filter chamber.

In order to solve the above-mentioned problems, the present invention is a filter for disposing a high-performance filter and a sheet metal four-sided frame to be mounted on the air inlet of the air conditioner body between the air conditioner body and the suction grille. a filter chamber that consists of a frame, on the inside of side covers provided on both sides of the air conditioner body, an elevating device for elevating the air suction grille is arranged, wherein the suction grille, the four-way frame and the filter frame Corresponding to the gap provided between and the air conditioner main body, and has a hanging string connecting portion to which the hanging string is connected. The hanging string connected to the hanging string connecting portion is passed through the gap. The lifting device is connected to the lifting device, and the lifting device supports the suction grill with a hanging string.

  Further, in the above configuration, the lifting device may be attached and fixed to a location covered by the side cover in the air conditioner body, and covered by the side cover in the air conditioner body. It may be attached and fixed to the place.

  The present invention includes a filter chamber having a high-performance filter between an air conditioner body and a suction grill, and lifts the suction grill inside the side covers provided on both sides of the air conditioner body. This lifting and lowering device supports the suction grill with a hanging strap, so that the suction grill can be raised and lowered even when the filter chamber is mounted.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an external configuration of a ceiling-suspended air conditioner 1 according to the present embodiment. FIG. 2 is a cross-sectional view showing the internal structure of the air conditioner body 1a, and FIG. 3 is a plan view showing the internal structure.

  As shown in FIGS. 1 and 2, the ceiling-suspended air conditioner 1 is provided with an air outlet 41 on the front surface (side surface) of the air conditioner main body 1 a, and performs heat exchange in order from the front surface on which the air outlet 41 is provided. A device 15 and a blower 13 are arranged. A drain pan 31 formed of a heat insulating material such as styrene foam is installed below the heat exchanger 15, and a suction grill 37 is provided at the suction port 42 below the blower 13. In addition to this, the air conditioner body 1a also receives instruction signals from various devices such as the electrical box 11 and the refrigerant pipe 29 and a remote controller (not shown) for controlling the air conditioner body 1a. A receiving unit (not shown) for receiving is provided. As shown in FIG. 2, the air conditioner main body 1 a has a bolt connecting portion (not shown) that is connected to a suspension bolt 3 suspended from the ceiling. It is installed and performs indoor air conditioning.

  As shown in FIG. 3, the blower 13 includes four blower units 21 to 24, which are fixed and arranged on a rotating shaft 27 that is driven by a single motor 25. As shown in FIG. 2, the heat exchanger 15 is a fin-tube type heat exchanger, and is installed obliquely in the air conditioner body 1a. A refrigerant pipe 29 is connected to the heat exchanger 15, and the refrigerant pipe 29 is led out of the air conditioner main body 1a to be used as a compressor, a pressure reducing device, an outdoor heat exchanger, etc. of an outdoor unit (not shown). Connected.

  The air conditioner body 1a is provided with a decorative panel on the outside, more specifically, side covers 45 are provided on both sides, and a bottom panel 14 made of sheet metal below the drain pan 31 (see FIGS. 1 and 2). Is provided. A drain pump unit 35 is disposed above the drain pan 31. The drain pump unit 35 sucks up the drain accumulated in the drain pan 31 via the flexible tube 32 and discharges it to the outside of the air conditioner main body 1a.

  An air cleaning filter 39 is attached to the suction grille 37. When the blower 13 is driven, indoor air is sucked into the air conditioner main body 1a through the suction grille 37 and the filter 39, and this air is heat-exchanged by the heat exchanger 15 and then passed through the outlet 41 into the room. Blown out. The middle partition plate 43 is a partition plate that partitions across substantially the center of the air conditioner body 1a.

  In the present embodiment, as shown in FIG. 4, the suction grille 37 is provided with a plurality of hanging string connecting portions 38 a to 38 d that protrude upward, and a plurality of hanging string connecting portions 38 a to 38 d that are connected to the hanging string connecting portions 38 a to 38 d. It is supported by the air conditioner main body 1a via the hanging straps 50a to 50d. Then, by lifting or unwinding these hanging straps 50a to 50d, the filter 39 placed on the suction grille 37 can be removed at a position where the suction grille 37 is lowered in a predetermined range and lowered. Composed. In addition, in the following description, when it is not necessary to particularly distinguish each of the hanging straps 50a to 50d and each of the hanging strap connecting portions 38a to 38d, they are expressed as “hanging strap 50” and “hanging strap connecting portion 38”. To do.

  As shown in FIG. 3, the lifting mechanism for feeding or unwinding the four hanging straps 50a to 50d has two units (lifting devices) 60 attached and fixed to both ends of the air conditioner body 1a, that is, the first And it accommodates in the 2nd units 60a and 60b. As shown in FIG. 5, each of the first unit 60 a and the second unit 60 b is attached to the side surface of the air conditioner main body 1 a and then held and fixed by a holder 62. The first unit 60a is attached and fixed to the right end surface of the air conditioner main body 1a, and two suspension strings 50a and 50b supporting one side 37A (see FIG. 4) of the suction grille 37 are connected to the first unit 60a. On the other hand, the second unit 60b is attached and fixed to the left end surface of the air conditioner main body 1a. The remaining two hanging strings 50c and 50d for supporting the other side 37B (see FIG. 4) of the suction grille 37 are attached to this. Connected.

  FIG. 6 is a diagram schematically showing the configuration of the first unit 60a. As shown in this figure, the first unit 60a includes two bobbins 70 around which one hanging strap 50 is wound, and a drive motor 71 that drives the bobbin 70 to rotate. When the motor 71 drives the bobbin 70 via a gear train (not shown), the two hanging straps 50 can be extended or unwound. Further, the first unit 60 a is provided with a control circuit (for example, MPU) 72 that controls rotational driving by the driving motor 71. 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 the rotation amount of the bobbin 70 is output to the control circuit 72.

  A plurality of signal lines 73 are drawn from 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 body 1a when attached to the air conditioner body 1a. By engaging with a main body side connector (not shown) provided on the side surface of the machine main body 1a, the first unit 60a and the air conditioner main body 1a are connected so that signal communication is possible. That is, by attaching the first unit 60a to the air conditioner body 1a, a control circuit (not shown) on the air conditioner body 1a side and a 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 an operator raises or lowers the suction grille 37 (filter 39), first, an instruction to raise or lower the suction grille 37 is given to the air conditioner body 1a by a remote controller or the like. When the control circuit of the air conditioner main body 1a receives this instruction, it transmits it to each control circuit 72 of the first unit 60a and the second unit 60b, and the control circuit 72 that has received this instruction drives the drive motor 71 to rotate (forward rotation). (Or reverse rotation), the four hanging straps 50a to 50d are drawn out or wound up and the suction grille 37 is moved up and down.

  The control circuit 72 of the first unit 60a and the second unit 60b is based on the detection signal from the rotation detector 75 so that the suction grille 37 stops at the working position when the suction grille 37 is lowered. Controls the amount of feed. Here, the work position is a position at which an operator can easily remove the filter 39 disposed on the suction grille 37, and has a height of, for example, about 1 meter from the floor surface. In the present embodiment, the distance from the bottom surface of the air conditioner main body 1a (that is, the attachment position of the suction grille 37) to the work position is set in the control circuit 72 in advance, and the control circuit 72 has the suspension string 50 by this distance. The bobbin 70 is rotated so that is fed out.

  On the other hand, when the suction grille 37 is raised, the control circuit 72 is driven on the basis of the detection signal from the rotation detector 75 so as to rewind the hanging string 50 when the suction grille 37 is lowered. By controlling the above, the suction grille 37 can be stored on the bottom surface of the air conditioner body 1a.

  By the way, when the suction grille 37 is stored, the suction grille 37 is swung by vibration, and the corners of the suction grille 37 are not fitted in the state where the suction grille 37 is fully closed to the bottom surface of the air conditioner main body 1a. The air conditioner main body 1a may be caught on the bottom panel 14 in some cases. Therefore, in the present embodiment, when the suction grille 37 is stored, after the suction grille 37 reaches the bottom surface of the air conditioner main body 1a, the suction grille 37 is once lowered, and the suction grille 37 is again turned into the air conditioner. By repeating the descending / raising control of raising until reaching the main body 1a, it is possible to suppress the swing of the suction grille 37, and the suction grille 37 is securely stored in the air conditioner main body 1a in a fully closed state. I try to do it.

  More specifically, when the control circuit 72 detects the rotation stop of the bobbin 70 based on the detection signal from the rotation detector 75 when the suction grill 37 is raised (that is, stored), the suction grill 37 is moved to the air. Since this means that the bottom surface (that is, the storage position) of the main body 1a has been reached, the drive motor 71 is controlled so that the suction grille 37 is lowered again by a predetermined distance L (for example, 1 meter). Here, the tip abutment between the suction grill 37 and the air conditioner main body 1a suppresses the swinging of the suction grill 37 when it is raised, and the lowering width when the suction grill 37 is lowered again is reduced. This makes it difficult for the suction grille 37 to swing.

  Then, the control circuit 72 controls the drive motor 71 to wind up the hanging strap 50 and raise the suction grille 37 by a predetermined distance L. As a result, the suction grille 37 is lifted in a state in which the swinging is suppressed, so that the suction grille 37 is properly stored in the fully closed state on the bottom surface of the air conditioner body 1a.

  When the suction grille 37 is stored, the number of times that the suction grille 37 is lowered and raised is not limited to one. By increasing the number of repetitions, the suction grille 37 is more reliably attached to the bottom surface of the air conditioner body 1a. Can be stored in a fully closed state.

  The ceiling-suspended air conditioner 1 is configured so that a filter chamber 90 can be mounted. 7 and 8 are perspective views showing an external configuration of the ceiling-suspended air conditioner 1 when the filter chamber 90 is mounted, and FIGS. 9 and 10 illustrate the filter chamber 90 of the ceiling-suspended air conditioner 1 It is sectional drawing and a perspective view shown with a periphery structure. The filter chamber 90 is used when a high-performance filter is added. For example, the suction grille 37 is provided with a filter having a relatively fast replacement cycle, whereas the filter chamber 90 has a relatively high replacement cycle. A filter (long life filter) 100 having a long exchange cycle is arranged. The filter 100 disposed in the filter chamber 90 includes a light regeneration deodorization filter, a room temperature regeneration deodorization filter, and the like in addition to the disposable filter.

  The filter chamber 90 is generally composed of a sheet metal four-sided frame 91 that can be attached to the suction port 42 of the air conditioner main body 1 a and a filter frame 92 for arranging the filter 100. The four-sided frame 91 includes sheet metal frame members 91a and 91b having a substantially U-shaped cross section disposed in the longitudinal direction, and sheet metal frame members 91c and 91d having a substantially U-shaped cross section disposed in the short direction. A partition member 93 having a substantially rectangular cross section is provided along the short direction at the approximate center of the four-sided frame 91. In general, the filter chamber is formed by a four-sided frame made of a sheet metal frame member having a substantially U-shaped cross section. Therefore, in a wide air conditioner such as a ceiling-suspended air conditioner, a frame member in the longitudinal direction (width direction) However, in this embodiment, since the partition member 93 is provided, the strength is increased, and problems such as the deformation of the filter chamber 90 during transportation and the like are eliminated.

  The filter frames 92 are arranged in pairs in the short direction of the four-way frame 91, and sandwich both sides of one filter 100 with a pair of filter frames. In the present embodiment, each of the pair of filter frames is disposed to face the frame member 91c side and the partition member 93 side, and is disposed to face the frame member 91d side and the partition member 93 side. Is done. Thereby, the filter can be disposed in each of the two spaces partitioned by the partition member 92, and the filter 100 can be disposed on almost the entire surface of the suction port 42.

  Further, as shown in FIG. 9, the filter chamber 90 of the present embodiment is formed such that the gap S between the four-sided frame 91 and the filter frame 92 is a gap through which the hanging strap 50 and the hanging strap connecting portion 38 pass. ing. More specifically, each filter frame 92 adjacent to each of the frame members 91c and 91d in the short direction of the four-sided frame 91 has a gap S between the frame members 91c and 91d so that the hanging strap 50 is connected to the hanging strap. It is provided at a position where the gap S passes through the portion 38. Thereby, even when the filter chamber 90 is attached to the air conditioner body 1a, the filter chamber 90 does not interfere with the hanging strap 50 and the hanging strap connecting portion 38, and the suction grille 37 is not attached to the suction grill 37. Similarly, it can be raised and lowered.

  Further, as shown in FIG. 9, the four-sided frame 91 of the filter chamber 90 is formed in a frame shape having the same shape as the opening of the suction port 42 in which the suction grille 37 is accommodated when the filter chamber 90 is not mounted. . As a result, when the suction grille 37 is raised and lowered, 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 in a state of being in close contact with the filter chamber 90. Here, the first and second units 60a and 60b of the present embodiment detect that the suction grille 37 has reached the accommodation position by detecting the rotation stop of the bobbin 70, so even when the filter chamber 90 is mounted, Without changing any processing, the suction grille 37 can be stopped at the accommodation position (position where it abuts the filter chamber 90) when the filter chamber 90 is mounted.

  As described above, according to the present embodiment, in the filter chamber 90, the gap S through which the hanging strap 50 and the hanging strap connecting portion 38 pass is provided between the four-sided frame 91 and the filter frame 92. Even if the filter chamber 90 is mounted, the suction grille 37 can be raised and lowered without any processing. Further, the four-sided frame 91 of the filter chamber 90 has an opening having the same shape as the suction port 42 in which the suction grille 37 is accommodated when the filter chamber 90 is not installed, so that the suction grille can be installed even when the filter chamber 90 is installed. 37 can be accommodated appropriately.

  Further, since the suction grille 37 can be raised and lowered, the operator can lower the suction grille 37 to the working position to remove the filter 39, and the filter near the ceiling surface where the air conditioner main body 1a is installed. It is not necessary to remove 39, and the work can be performed easily and safely. Further, the first and second units 60a and 60b for raising and lowering the suction grille 37 are not built in the air conditioner body 1a, but are provided on both sides of the air conditioner body 1a. Since the air conditioner main body 1a can communicate with the air conditioner main body 1a, it is easy to remove and attach these units during maintenance of the first and second units 60a and 60b.

  The above-described embodiments merely show one aspect of the present invention, and can be arbitrarily modified within the scope of the present invention. For example, in the above-described embodiment, the suction grill 37 is illustrated as being suspended by the four hanging straps 50a to 50d, but the number of hanging straps may be arbitrary. Moreover, although embodiment mentioned above demonstrated the case where the hanging string connection part 38 of the suction grille 37 protrudes upwards, you may make it not protrude upwards. In this case, the gap S between the four-way frame 91 and the filter frame 92 may be a gap through which the hanging strap 50 passes. In the above-described embodiment, each filter is arranged so that different types of filters (including filters having different sizes and thicknesses) can be selectively arranged in the filter chamber 90 or a plurality of filters can be arranged in a stacked manner. A plurality of filter frames to be held may be provided.

  In the above-described embodiment, each of the first unit 60a and the second unit 60b, which are lifting mechanisms, is attached and fixed to the outside of the side surface of the air conditioner main body 1a (see FIG. 5) and covered with the side cover 45. Although described above, the present invention is not limited thereto, and a configuration in which each of the first unit 60a and the second unit 60b is attached and fixed to the side cover 45 as shown in FIG. In this configuration, the signal line drawn from the control circuit 72 of the first unit 60a and the second unit 60b is drawn out by the signal cable 80 to the outside of the unit housing, and the unit provided at the tip of the signal cable 80 By setting it as the structure connected to the side surface of the air conditioner main body 1a with the side connector 74, the 1st unit 60a and the 2nd unit 60b can be connected to the air conditioner main body 1a so that communication is possible.

  In the above-described embodiment, the configuration in which the suction grille 37 is in contact with the air conditioner main body 1a is exemplified based on the detection signal of the rotation detector 75. A configuration may be adopted in which a drive current is detected and a transient current that accompanies bobbin 70 rotation stoppage is detected. In the above-described embodiment, the case where the present invention is applied to a ceiling-suspended air phase adjuster has been described. However, the present invention can be widely applied to an air conditioner such as a ceiling-embedded air conditioner.

It is a perspective view which shows the external appearance structure of the ceiling suspension type air conditioning apparatus concerning this embodiment. It is sectional drawing which shows the internal structure of an air conditioner main body. It is a top view which shows the internal structure of an air conditioner main body. It is a figure for demonstrating raising / lowering of the suction grill. It is a figure which shows the unit which accommodated the raising / lowering mechanism. It is a figure which shows typically the functional structure of the unit. It is a perspective view which shows the external appearance structure of the ceiling suspension type air conditioning apparatus at the time of filter chamber mounting | wearing. It is a perspective view which shows the external appearance structure of the ceiling suspension type air conditioning apparatus at the time of filter chamber mounting | wearing. It is sectional drawing which shows the filter chamber of a ceiling suspension type air conditioning apparatus with the periphery structure. It is a perspective view which shows the filter chamber of a ceiling suspension type air conditioning apparatus with the periphery structure. It is a figure which shows the unit concerning the modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ceiling suspended type air conditioner 1a Air conditioner main body 11 Electrical equipment box 13 Blower 15 Heat exchanger 31 Drain pan 37 Suction grill 38, 38a-38d Hanging string connection part 39, 100 Filter 45 Side cover 50, 50a-50d Hanging string 90 Filter chamber 91 Four-way frames 91a to 91d Frame member 92 Filter frame 100 Partition member

Claims (3)

Between the air conditioner body and the suction grille, comprising a sheet-metal square frame is attached to the suction port of the air conditioner main body, a filter chamber that consists of a filter frame for disposing the high-performance filter, An elevating device for raising and lowering the suction grill is disposed inside a side cover provided on both sides of the air conditioner main body, and the suction grill corresponds to a gap provided between the four-side frame and the filter frame. And a hanging string connecting portion that protrudes toward the air conditioner main body and to which a hanging string is connected, and the hanging string connected to the hanging string connecting portion is connected to the lifting device through the gap. However, the air conditioning apparatus is characterized in that the suction grill is supported by a hanging string. The air conditioner according to claim 1, wherein the lifting device is attached and fixed to a portion of the air conditioner main body that is covered with the side cover . The air conditioner according to claim 1 , wherein the lifting device is attached and fixed to the side cover .

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