JP4271008B2 - Embedded ceiling air conditioner - Google Patents

Description

  The present invention relates to a ceiling-embedded air conditioner.

In general, a grill frame having an air outlet and a suction port is provided at the lower end of a main body embedded in the ceiling, and a suction grill that supports a filter is provided at the suction port opening of the grill frame. There is known an air conditioner that is formed so that it can be moved up and down, and when the filter is replaced, the suction grill is lowered together with the filter so that the filter can be replaced at a low place. In this type, when the suction grille is lowered, the suction grille is inclined so that the filter state can be easily checked and the filter can be easily attached and detached (see Patent Document 1). In this case, in the conventional configuration, the suction grill is generally raised and lowered by supporting the four corners of the suction grill with suspension strings and feeding or winding the strings. Further, when a mechanism for tilting the suction grill is employed, it is necessary to fix the filter to the suction grill so that the filter does not fall off the suction grill.
JP 2002-349893 A

  However, when the filter is firmly fixed to the suction grille, the ease of attaching / detaching the filter is impaired. In addition, when the suction grill is raised with four hanging strings and the suction grill is stored in the grill frame, when the length of the suction grill is long in the longitudinal direction, the four corners of the suction grill are completely stored, There is a risk that the center part may be deformed and stored in a convex state due to its own weight. There is a problem that damages.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the problems of the prior art described above and to fix the filter to the suction grill while maintaining the ease of attaching / detaching the filter.

In order to solve the above-mentioned problem, the invention according to claim 1 is provided with a grill frame having an air outlet and a suction port at a lower end of a main body embedded in a ceiling, and the suction port of the grill frame has a suction. A grill is provided, and a filter for purifying the suction air is detachably installed at the opening of the suction grill, and the suction grill and the filter are configured to be lowered to an integral filter replacement position. In the ceiling-embedded air conditioner including a grill, the guide is provided with a guide for positioning the filter on the suction grill, and a lever that extends to the upper surface of the filter and holds the filter on the suction grill. together with the lever constitutes distant disengageable from the upper surface of the filter, to the grill frame, when the suction grille is accommodated to the grill frame, et al provided in the suction grille Said lever is provided with switch housing Make 認用 a position that faces a position to be stored, the suction grille is in contact with the lever switch of the housing for confirmation when housed in the grill frame is brought It is comprised so that it may cooperate .

According to a second aspect of the present invention, in the ceiling-embedded air conditioner according to the first aspect, the suction grille constituting the elevating grill is supported by two suspension strings at one side edge of the long side. In addition, the substantially central portion of the other side edge of the long side is supported by a single hanging strap, and the lifting grill is provided in the vicinity of the central portion supported by at least one hanging strap. An abutting body that abuts on the grill frame when it is housed in an appropriate position of the grill frame is provided.

According to a third aspect of the present invention, in the ceiling-embedded air conditioner according to the first or second aspect , the lifting grill is set to have a large amount of feeding of the two hanging strings at the filter replacement position. Thus, the suction grill is configured to be inclined so that one side edge of the long side is lower than the other side edge of the long side.

According to a fourth aspect of the present invention, in the ceiling-embedded air conditioning apparatus according to the third aspect , the elevating grill is configured to be inclined so that the central portion side of the conditioned room is lowered. .

  According to the first aspect of the present invention, the filter can be fixed to the suction grill while maintaining the ease of attaching and detaching the filter.

  In invention of Claim 2, it can be confirmed whether the suction grill was normally accommodated in the grill frame.

  In the invention according to claim 3, since the suction grille can be securely stored even when the length of the suction grille is long, the central portion of the suction grille is projected downward by its own weight. Can be prevented from being deformed and stored.

  In the invention according to claim 4, when the suction grill is lowered, the one side edge of the long side of the suction grill is inclined so as to be lower than the other side edge, so that the operator can easily confirm the state of the filter. In addition, the filter can be easily attached and detached.

  In the fifth aspect of the present invention, when the filter is cleaned or replaced, the suction grill is lowered so that the central portion side of the conditioned room is lowered, so that the operator can more easily check the state of the filter. The filter can be easily attached and detached.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a ceiling-embedded air conditioner 100 according to the present invention. As shown in FIG. 1, the ceiling-embedded air conditioner 100 is installed on a ceiling in a living space, and is particularly provided at a position near a wall. The main body 1 is embedded in the ceiling.

  As shown in FIG. 2, a heat exchanger 2, a blower 3, and the like are accommodated in the main body 1. A grill frame 4 is fixed to the lower end of the main body 1, and an air outlet 5 is provided on one end side of the grill frame 4 near the wide area of the living space. Air is discharged from the outlet 5 to the wide area side of the living space (the central part side of the conditioned room). Further, a suction port 6 is provided at a position near the wall on the other end side of the grill frame 4, and air is sucked from the suction port 6. An elevating grill 200 is disposed at the suction port 6.

  The elevating grill 200 has a suction grill 10 and an elevating mechanism (not shown) that elevates and lowers the suction grill 10.

  A filter 11 for cleaning the intake air is detachably installed in the opening of the suction grill 10. The filter 11 is a long life filter. As shown in FIG. 1, the suction grill 10 and the filter 11 are suspended by the grill frame 4 through three suspension strings 12, 13, and 14 so as to be movable up and down.

  One end 12a, 13a, 14a of three suspension cords 12, 13, 14 is fixed to three portions of the suction grill 10, and the other end 12b, 13b, 14b of each suspension strap 12, 13, 14 is It is connected to the lifting mechanism. The lifting mechanism includes a stepping motor (not shown), three bobbins that are rotationally driven by the stepping motor, and a control device that drives and controls the stepping motor. As shown in FIG. The frame 4 is accommodated in one unit 21 arranged near the suction port 6.

  On the three bobbins (not shown) in the unit 21, the other ends 12b, 13b, and 14b of the three suspension strings 12, 13, and 14 are wound, respectively. The ends 12 a, 13 a, and 14 a of the suspension cords 12, 13, and 14 are led out of the unit 21, guided by the guides 16 formed on the grill frame 4, and then formed on the grill frame 4. As shown in FIG. 1, it passes through the through-hole 17 and extends to the conditioned room side, and is fixed at three locations of the suction grill 10.

  In the elevating grill 200, the one side edge 10A on the long side of the suction grill 10 is supported by two suspension strings 12, 13, and the substantially central portion of the other side edge 10B on the long side is one. When the lifting grill 200 is stored in an appropriate position of the storage portion of the grill frame 4 in the vicinity of the portion supported by the single suspension strap 14, the bottom of the storage portion of the grill frame 4 is supported. It comprises a contact body 23 that contacts. Further, in the vicinity of the portion supported by the two suspension strings 12 and 13, when the elevating grill 200 is stored at an appropriate position of the storage portion of the grill frame 4, the contact is made to contact the lower surface of the storage portion of the grill frame 4. A body 24 is provided.

  In the above-described configuration, the central contact body 23 is formed integrally with the fixing bracket 27 of the air purification filter 25. That is, in this air conditioner, the air purifying filter 25 is placed on the filter 11 constituted by the long life filter, and the contact body 23 is formed on the fixing metal 27 of the air purifying filter 25. The Since the air purifying filter 25 is fixed to the filter 11 by the fixing bracket 27, it can be attached to and detached from the suction grill 10 integrally with the filter 11.

FIG. 4 schematically shows the relationship between the grill frame 4 and the suction grill 10. FIG. 4 (A) shows the grill frame 4 and FIG. 4 (B) shows the suction grill 10. Although not shown in FIG. 4B, the suction grill 10 includes a guide 51 in the vicinity of one side edge 10A of the long side.

  The guide 51 is a positioning member that prevents the filter 11 from slipping when one side edge 10A of the suction grill 10 is lowered from the other side edge 10B and the suction grill 10 is inclined, as shown in FIG. The filter 11 is provided over almost the entire width. The guide 51 includes a lever 53 that fixes the filter 11 at one end on the hanging string 13 side.

  An enlarged view of the lever 53 is shown in FIG. The lever 53 includes a fixing portion 53 </ b> A that extends to the upper surface 11 </ b> A of the filter 11 and a finger hook portion 53 </ b> B that operates the lever 53. The guide 51 and the lever 53 are connected by a hinge shaft 51A. Therefore, the lever 53 can be rotated about the hinge shaft 51A, and the fixing portion 53A of the lever 53 is extended to the upper surface 11A of the filter 11 as indicated by an arrow A in FIG. The filter 11 is fixed to the suction grill 10. 4D, when the fixing portion 53A is moved away from the upper surface 11A of the filter 11, the filter 11 is released from being fixed to the suction grill 10.

  On the other hand, as shown in FIG. 4A, the grill frame 4 includes a micro switch 61 at the right edge of the suction port 6 in the drawing. FIG. 4C shows an enlarged view of the micro switch 61. 4A to 4D, the micro switch 61 is provided at a position facing the fixing portion 53A of the lever 53 when the suction grill 10 is stored in the grill frame 4.

  When the micro switch 61 is connected to a control device (not shown), the fixing portion 53A of the lever 53 contacts the actuator 61A of the micro switch 61, and a storage confirmation signal is transmitted from the micro switch 61 to the control device (not shown). It is confirmed that the suction grill 10 is stored in the grill frame 4.

  The fixing portion 53 </ b> A of the lever 53 has a function of fixing the filter 11 and a function of a detection surface for confirming that the suction grill 10 is stored in the grill frame 4. With these functions, it is possible to prevent the suction grill 10 from being housed in the grill frame 4 when the filter 11 is not completely fixed, and to reduce the number of parts of the suction grill 10.

  Next, the operation will be described. When the stepping motor in the unit 21 is driven to rotate, the suspension strings 12, 13, and 14 wound around the bobbin are fed out / wound up. When the grill raising / lowering operation key (not shown) of a remote controller (not shown) communicated with the control device in a wireless state is operated and the grill raising / lowering operation is selected, the control device in the unit 21 is selected. The stepping motor is driven and controlled. The grill raising / lowering operation key includes an ascending operation key (not shown) and a descending operation key (not shown) of the suction grill 10, and maintenance work such as cleaning and replacement of the filters 11. Sometimes used.

  At the time of this maintenance work, the operator first selects and operates the descending operation key of the grill raising / lowering operation key by using the remote controller. When this descent operation key is selected, the stepping motor is activated by the control device (not shown), and the suspension strings 12, 13, and 14 are fed out from the unit 21. As shown in FIG. It begins to descend from the ceiling. At this time, the feeding amounts of the suspension strings 12, 13, and 14 fed out from the unit 21 are kept the same by the control device, and the suction grill 10 is lowered while being maintained in a substantially horizontal state.

  When the suction grill 10 is lowered to a position Y slightly higher than the filter replacement position X, a first time starts to be counted by a control device (not shown). The first time is the time until the suction grill 10 is lowered from the position Y to the filter replacement position X. While the first time is counted, the suction grill 10 is lowered to the filter replacement position X in a horizontal state. When the suction grill 10 is lowered to the filter replacement position X, the bobbin around which the single suspension string 14 is wound is detached from the driving system of the stepping motor through, for example, a clutch or the like, and the single suspension string 14 is suspended. The feeding of the string 14 is stopped.

  Then, the second time starts to be counted by a control device (not shown). The second time is a time during which the suction grill 10 is tilted from the horizontal state to the tilt angle a. During this second time period, only two suspension strings 12, 13 are fed out from the unit 21, and the suction grill 10 is lowered from the horizontal state to the central part side (air discharge side) of the conditioned room. Tilt to.

  When the suction grill 10 is tilted to the tilt angle a, the control device (not shown) stops the driving of the stepping motor, stops the feeding of the two suspension strings 12, 13, and stops the lowering operation.

  Here, the filter replacement position X is preferably a low position where an operator can perform maintenance work. The filter replacement position X is a position where, for example, in a living space with a ceiling height of about 2.5 m, the suspension strings 12, 13, and 14 are drawn out from the ceiling by about 1 m, and the suction grill 10 is lowered by about 1 m. The suction grill 10 is about 1.5 m above the floor.

  In addition, the inclination angle a is an angle at which the surface of the filter 11 can be confirmed in the field of view of an operator located on the wide area side of the living space (center side of the conditioned room) at the filter replacement position X. Is desirable. For example, it is tilted 45 degrees from the horizontal position to the central part side (air discharge side) of the conditioned room.

  At the filter replacement position X, as shown by an arrow B in FIG. 4D, the operator operates the finger hook portion 53B of the lever 53 that fixes the filter 11 with the fingertip. Then, the lever 53 rotates around the hinge shaft 51A, and the fixing portion 53A of the lever 53 is detached from the upper surface 11A of the filter 11. Even after the fixing portion 53A is detached from the upper surface 11A of the filter 11, the filter 11 is positioned by the guide 51, and the filter 11 is prevented from falling to the floor surface. Next, the filter 11 is removed from the guide 51 provided on the suction grill 10 so that the front side of the filter 11, that is, the side positioned by the guide 51 is lifted, and passed between the two suspension strings 12 and 13. Then, the filter 11 is pulled out from the suction grill 10 and the filter 11 is cleaned or replaced.

  In addition, after cleaning or replacing the filter 11, the operator places the filter 11 in alignment with the guide 51 provided on the suction grill 10. Next, the finger hook portion 53B of the lever 53 is operated with a fingertip as shown by an arrow A in FIG. Then, the lever 53 rotates about the hinge shaft 51 </ b> A, and the fixing portion 53 </ b> A of the lever 53 extends to the upper surface 11 </ b> A of the filter 11. Thereby, the filter 11 is fixed to the suction grill 10. Thereafter, the operator selects and operates the ascending operation key of the grill elevating operation key from the remote controller.

  Here, when the ascending operation key is selected, a third time starts to be counted by a control device (not shown). This third time is the time until the suction grille 10 tilted at the tilt angle a returns to the horizontal state. When the third time starts to be counted, the stepping motor is driven, the winding of the two suspension strings 12, 13 is started, and the suction grille tilted toward the central portion side (air discharge side) of the conditioned room The one end side of 10 is raised while returning to the horizontal state. Here, the bobbin around which the single suspension strap 14 is wound is detached from the drive system of the stepping motor, for example, via a clutch or the like, and the winding of the suspension strap 14 is stopped.

  Next, when the suction grill 10 is returned to the horizontal state, the bobbin around which one suspension cord 14 is wound is connected to the drive system of the stepping motor, and the suction grill 10 is raised in the horizontal state. Then, the suction grille 10 enters the grille frame 4 in a horizontal state, and the respective suspension strings 12, 13, 14 until the above-described contact bodies 23, 24 come into contact with the lower surface of the storage part of the grille frame 4. Is wound up. After the contact bodies 23 and 24 come into contact with the lower surface of the storage portion of the grille frame 4, for example, the corresponding bobbin is detached from the drive system of the stepping motor, slips, etc., and the corresponding hanging string is wound up. When it stops and everything stops, the raising operation of the lifting grill 200 is stopped by a control device (not shown).

  The lever 53 that fixes the suction grill 10 and the filter 11 contacts the actuator 61A of the micro switch 61 provided on the grill frame 4 when the suction grill 10 is raised. The micro switch 61 is provided to confirm that the suction grill 10 is completely stored in the grill frame 4. When the fixing portion 53A of the lever 53 comes into contact with the actuator 61A of the micro switch 61, a storage confirmation signal is transmitted to a control device (not shown) and the storage of the suction grill 10 is confirmed. When the actuator 61A is not in contact with the actuator 61A, the storage confirmation signal is not transmitted, so that it is not possible to confirm that the suction grill 10 is stored in the grill frame 4, and the air conditioner cannot be operated. Therefore, in that case, the suction grill 10 is lowered again, and after confirming whether the filter 11 is disposed at a predetermined position and whether the lever 53 fixes the filter 11, the suction grill 10 is raised. Let

  According to this embodiment, when the filter 11 is cleaned and replaced, the suction grill 10 is lowered even if it is tilted toward the central portion side (air discharge side) of the conditioned room. Since the filter is fixed by the guide 51 and the lever 53 provided on the grill 10, the filter 11 is prevented from dropping, and the lever 53 can be operated with a fingertip, so that the filter 11 can be easily attached and detached. Further, the fixing portion 53A of the lever 53 has not only a function of fixing the filter 11 but also a function of a detection surface for confirming that the suction grill 10 is housed in the grill frame 4, so that the fixing of the filter 11 is incomplete. In this state, the suction grill 10 can be prevented from being stored in the grill frame 4.

  In addition, when the length of the suction grill 10 is long in the longitudinal direction, even if the four corners of the suction grill 10 are completely stored, the center portion of the suction grill 10 is deformed and stored in a convex downward state by its own weight. However, according to this embodiment, the one side edge 10A on the long side of the suction grill 10 is supported by the two suspension cords 12 and 13, and the other side edge 10B on the long side is substantially at the center. The suspension strings 12, 13, 14 are wound up until the above-mentioned contact bodies 23, 24 are in contact with the lower surface of the storage portion of the grille frame 4. Both ends on the long side of the suction grill 10 and at least the substantially central portion of the other side edge 10B are completely lifted in the grill frame 4. Further, when it is completely lifted, the contact bodies 23 and 24 come into contact with the lower surface of the storage portion of the grill frame 4, so that the suction grill 10 is completely positioned in the grill frame 4.

  Therefore, the center portion of the suction grill 10 is not deformed and stored in a downwardly convex state by its own weight.

  Further, according to this embodiment, when the filter 11 is cleaned and replaced, the suction grill 10 is lowered and tilted so that the central portion side (air discharge side) of the conditioned room is lowered. The person A can confirm the state of the filter 11 well and can easily attach and detach the filter 11. Further, after the filter 11 is cleaned and replaced, the suction grill 10 is returned from the tilted state to the horizontal state and is raised in the horizontal state, so that the suction grill 10 is smoothly and smoothly mounted on the grill frame 4. be able to. Furthermore, since the suction grill 10 is raised while maintaining a horizontal state, vibration of the suction grill 10 can be suppressed.

  As mentioned above, although this invention was demonstrated based on the said one Example, this invention is not limited to this.

  For example, although a one-way cassette type air conditioner has been described, the present invention can also be applied to a two-way cassette type and a four-way cassette type. In this case, the direction in which the suction grille is tilted is not limited to the air discharge side.

It is a figure which shows one Example of the ceiling embedded type air conditioning apparatus which concerns on this invention. It is sectional drawing of the transversal direction of the ceiling embedded type air conditioning apparatus shown in FIG. It is a figure which shows a grill frame and a suction grill. (A) is a view showing a grill frame, (B) is a view showing a suction grille, (C) is an enlarged view showing a micro switch, (D) is an enlarged view showing a lever, ( E) is a diagram showing a state in which the lever is opened. It is a figure which shows a suction grille.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 4 Grill frame 5 Air outlet 6 Suction port 10 Suction grill 11 Filter 12 Suspension string 13 Suspension string 14 Suspension string 21 Unit 23 Contact body 24 Contact body 25 Emptying filter 27 Fixing fixture 51 Guide 51A Hinge shaft 53 Lever 53A fixation Part 53B Finger hanging part 61 Micro switch 61A Actuator 100 Ceiling embedded type air conditioner 200 Lifting grill

Claims (4)

A grill frame having an air outlet and a suction port is provided at the lower end of the main body embedded in the ceiling. A suction grill is provided at the suction port of the grill frame, and the suction air is cleaned at the opening of the suction grill. In a ceiling-embedded air conditioner equipped with a lifting grill that is configured to be detachably installed and the suction grill and the filter can be lowered integrally to a filter replacement position,
The suction grille, a guide for positioning the filter, and, detachably constituting the lever to hold the filter extends to the upper surface of the filter to the suction grille provided to the guide, the levers from the upper surface of the filter while, on the grill frame, the time of suction grille is accommodated in the grill frame, the switch for receiving confirmation is provided on opposite position as the lever provided on the suction grill Ru housed the suction grille ceiling embedded air conditioning apparatus, characterized in that said lever switch of the housing for confirmation when housed in the grill frame is consists to associated contacts. The suction grille that constitutes the lifting grille is supported by two hanging strings at one side edge of the long side. In addition, the substantially central part of the other side edge of the long side is supported by a single strap, and there are few In the vicinity of the center part supported by at least one hanging string, the lifting grill is fitted with an appropriate grill frame. An abutting body that abuts on the grill frame when stored in a position is provided. The ceiling-embedded air conditioner according to claim 1. The elevating grill has a large amount of feeding of the two hanging strings at the filter replacement position. As a result, one side edge of the long side of the suction grille is lower than the other side edge. The ceiling-embedded air conditioning apparatus according to claim 1, wherein the ceiling-embedded air conditioner is inclined to the ceiling. The elevating grill is configured to be tilted so that the center side of the conditioned room is lowered. The ceiling-embedded air conditioner according to claim 3.

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