EP0823598A2 - Klimagerät für Deckenmontage mit Steuerung der Auf- und Abbewegung der Hebevorrichtung - Google Patents

Klimagerät für Deckenmontage mit Steuerung der Auf- und Abbewegung der Hebevorrichtung Download PDF

Info

Publication number
EP0823598A2
EP0823598A2 EP97113236A EP97113236A EP0823598A2 EP 0823598 A2 EP0823598 A2 EP 0823598A2 EP 97113236 A EP97113236 A EP 97113236A EP 97113236 A EP97113236 A EP 97113236A EP 0823598 A2 EP0823598 A2 EP 0823598A2
Authority
EP
European Patent Office
Prior art keywords
elevating
panel
consumption current
motor
elevating motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97113236A
Other languages
English (en)
French (fr)
Other versions
EP0823598B1 (de
EP0823598A3 (de
Inventor
Keiji Wada
Nobuhiro Idei
Shinichi Osu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of EP0823598A2 publication Critical patent/EP0823598A2/de
Publication of EP0823598A3 publication Critical patent/EP0823598A3/de
Application granted granted Critical
Publication of EP0823598B1 publication Critical patent/EP0823598B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082—Grilles, registers or guards
    • F24F13/084—Grilles, registers or guards with mounting arrangements, e.g. snap fasteners for mounting to the wall or duct
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/60—Energy consumption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/14—Details or features not otherwise provided for mounted on the ceiling

Definitions

  • the present invention relates to an improvement of an in-ceiling type air conditioner having a control system for controlling the upward and downward motion of a panel which is upwardly and downwardly movable (hereinafter referred to as "elevating panel") and provided with an air filter for cleaning suck-in air into the in-ceiling type air conditioner.
  • the conventional in-ceiling type air conditioner as described above is provided with upper and lower limits switches for detecting the upper limit position and the lower limit position of the elevating panel, respectively.
  • the elevating motor is stopped on the basis of a signal from the lower limit switch which is adapted to detect the lower limit position.
  • the elevating motor is stopped on the basis of a signal from the upper limit switch which is adapted to detect the upper limit position.
  • the air suction grill is upwardly moved until the four comers of the air suction grill uniformly come into contact with the lower face of the decorative panel so that the air suction grill is not inclined, and then stopped at that position while keeping a horizontal position.
  • a limit switch must be provided to stop the air suction grill at the upper limit position or the lower limit position as described above, resulting in increase of the number of parts and the number of electrical wires and also disturbing the reduction in cost. In addition, the rate of failure is also increased.
  • an object of the present invention is to provide an in-ceiling type air conditioner in which the number of parts and the number of electrical wires are reduced, a air suction grill can be stopped at the upper limit position or the lower limit position at a low failure rate and at a low cost, and also the inclination of the air suction grill can be corrected when the air suction grill is stopped at the upper limit position.
  • an in-ceiling type air conditioner includes a unit body which contains a heat exchanger and an air blower and is mounted in the ceiling, a decorative panel provided on the ceiling face, and an elevating panel with an air filter, to which one ends of suspending ropes are fixed, the other ends of the suspending ropes being fixed to pulleys which are rotationally driven by an elevating motor, the suspending ropes being unreeled/rewound by actuating the elevating motor to move the elevating panel upwardly and downwardly, is characterized by further including consumption current detecting means for detecting the consumption current of the elevating motor, stop instructing means for outputting an operation stop instruction when the detection result of the consumption current detecting means is over a predetermined set value during the upward or downward motion of the elevating panel, and motor stop control means for stopping the elevating motor in response to the operation stop instruction from the stop instruction means.
  • the consumption current of the elevating motor is kept constant.
  • the operation stop instruction is output to the motor stop control means, and the motor stop control means stops the elevating motor, whereby the elevating panel is stopped at the upper lower limit position.
  • the rotation of the elevating motor is continued. Therefore, the rotation of the pulleys works to rewind the ropes after all the ropes are unreeled.
  • the load on the elevating motor when the ropes are rewound after the ropes are unreeled becomes relatively larger than the dead weight of the elevating panel, and thus the consumption current is increased. Therefore, the consumption current detecting means detects a relatively large consumption current. If the consumption current detected by the consumption current detecting means exceeds a predetermined set value, the operation stop signal is output from the stop instruction means, and the motor stop control means stops the elevating motor.
  • the stop instruction means outputs the operation stop instruction when the detection result of the consumption current detecting means is over a first set value during the upward motion of the elevating panel, or when the detection result of the consumption current detecting means is over a second set value during the downward motion of the elevating panel.
  • the timer is started, and the elevating motor is stopped after the predetermined time elapses.
  • the first set value is set to a value larger than the consumption current which is took by the elevating motor when the elevating grill is upwardly moved, and it is predetermined in accordance with the load of the elevating motor which is increased when the elevating panel arrives at the upper limit position.
  • the elevating motor is immediately stopped.
  • the second set value is set to be smaller than the first set value, and it is set on the basis of the consumption current which is took by the elevating motor when the elevating panel is upwardly moved.
  • the motor stop control means stops the elevating motor when a predetermined time elapses alter receiving the operation stop instruction from the stop instruction means.
  • the elevating motor is stopped after the predetermined time elapses from the time when the operation stop instruction is output from the stop instruction means. Therefore, after the elevating panel arrives at the upper limit position, the elevating motor is rotated for the predetermined time to correct the inclination of the elevating panel.
  • the in-ceiling type air conditioner as described above further includes a timer for counting the predetermined time after the operation stop instruction is output, wherein the motor stop control means stops the elevating motor in response to the output result of the timer.
  • a control device for controlling the upward and downward motion of an elevating panel of an in-ceiling type air conditioner, comprising, an elevating motor for moving the elevating panel upwardly and downwardly, a driver circuit for supplying an operating current to the elevating motor to rotate the elevating motor forwardly and backwardly, a controller for outputting a control signal to the driver circuit and controlling the driver circuit on the basis of the control signal, a consumption current detector for detecting the consumption current of the elevating motor at all times to output a detection result to the controller, a timer for counting a predetermined time and outputting the count result to the controller, wherein when the consumption current detected by the consumption current detector exceeds a predetermined value during the upward or downward motion of the elevating panel, the controller outputs an operation stop instruction to the driver circuit to stop the rotation of the elevating motor and thus stop the elevating panel.
  • the predetermined time is set to such an enough time that the overall periphery of said elevating panel can perfectly arrive at the upper limit position of the upward motion or at the lower limit position of the downward motion thereof. Therefore, the elevating panel can be stopped at the upper or lower limit position while it is surely kept in a horizontal position when arriving at the upper limit position or lower limit position.
  • Fig. 4 is a longitudinal sectional view showing an in-ceiling type air conditioner.
  • reference numeral 50 represents an air conditioner.
  • the air conditioner 50 includes a unit main body 2 which is mounted in the ceiling 1 and formed of a metal plate, a decorative panel 7 which has an air suck-in port 3 at the center thereof and air blow-out ports 4 on the four sides of the peripheral portion thereof and provided in the ceiling plane so as to dose a ceiling hole 5, and a air suction grill 9 (elevating panel) having an air suck-in port 8 at the center thereof.
  • Reference numeral 10 represents an air blower which comprises a turbo fan 11 and a fan motor 13 secured on the ceiling plate 12
  • reference numeral 14 represents a nozzle port for guiding indoor air from the air suck-in port 8 to the turbo fan 11
  • reference numeral 15 represents a drain pan which has an inwardly projecting portion 15a and an outwardly projecting portion 15b and is formed of styrolfoam in a squared annular form
  • reference numeral 16 represents a plate fin type heat exchanger which is disposed at the discharge side of the turbo fan 11 so as to surround the fan annularly.
  • Reference numeral 17 represents a heat insulator which is wound around the peripheral surface of the unit body 2
  • reference numeral 21 represents an air guide unit for guiding to an air blow-out port 4 air which is heat-exchanged by the heat exchanger 16
  • reference numeral 22 represents a suspending bolt through which the unit body 2 is suspended from a ceiling girder by a hook member
  • reference numeral 24 represents an air filter which is secured at the downstream side of the air suction grill 9 and adapted to purity the suck-in air.
  • the air suction grill 9 is supported to the unit body 2 through four suspending ropes 31 so as to be freely upwardly and downwardly moved.
  • Each of the four suspending ropes 31 is formed of a resin wire or metal wire which is coated with vinyl coating on the outer periphery thereof, however, it may comprise a dial cord.
  • one ends 31a of the four suspending ropes 31 are connected to hooks 90a of air suction grill reinforcing members 90 as shown in Fig.
  • the air suction grill reinforcing members 90 are fixed to the two sides of the air suction grill 9 by screws or the like and function as hooks for the four suspending ropes 31. In addition, the air suction grill reinforcing members 90 also function to reinforce the air suction grill 9 and prevent the lateral displacement of the air filter 24 (Fig. 4) which is mounted on the suck-in face of the air suction grill 9.
  • the totally four main pulleys 100A and 100B are linked to both the end portions of a shaft 110 while each pulley 100A and each pulley 100B are paired.
  • Each of the main pulleys 100A and 100B are formed with a hole therein, and the shalt 110 is inserted into the holes of these main pulleys 100A and 100B so that the pulleys are freely rotatable around the shalt 110 through the holes.
  • a fixing member 120 is fixed to the shalt portion of the shalt 110 through plural screws or the like, and a rotational force transmitting means such as a leaf spring, an electromagnet or the like (hereinafter referred to as "coil spring") 130 is interposed between the fixing member 120 and the main pulley 100A, 100B.
  • a rotational force transmitting means such as a leaf spring, an electromagnet or the like (hereinafter referred to as "coil spring”) 130 is interposed between the fixing member 120 and the main pulley 100A, 100B.
  • Reference numeral 125 represents a freely rotating ring.
  • the fixing members 120, the main pulleys 100A, 100B and the rings are kept to be frictionally linked to one another by the spring force of the coil spring 130, and the four suspending ropes 31 are unreeled/rewound interlockingly with the rotation of the shaft 110.
  • the main pulleys 100A and 100B turn free against the spring force of the coil spring 130.
  • a mechanism 150 for upwardly and downwardly moving the air suction grill 9 (hereinafter referred to as "elevating mechanism"), that is, the elevating mechanism 150 comprising the main pulleys 100A and 100B, the shalt 110, a clutch containing the rotational force transmitting means 130 and a air suction grill elevating motor (DC motor) 140 as described later, etc. are collectively disposed on a support plate 151 which is provided so as to extend in the open portion of the unit body 2.
  • the support plate 151 is fixed to the decorative panel 7, and the elevating mechanism 150 described above is fixed to the decorative panel side.
  • a controller 160 for controlling the air conditioner is provided in the open portion of the unit body 2 so as to confront the support plate 151.
  • the controller 160 and the support plate 151 are disposed so as to extend in the so-called air sucking open portion of the unit body 2. That is, the support plate 151 is disposed so as to extend in an area 190A while the controller 160 is disposed so as to extend in an area 190B, however, the existence of the support plate 151 and the controller 160 do not disturb the air sucking function because the air can be sufficiently sucked in through the residual space 170.
  • the elevating mechanism 150 described above is fixed to the decorative panel 7, however, the controller 160 is fixed to the unit body 2.
  • the elevating mechanism 150 will be hereunder described in detail.
  • the shalt 110 is freely rotatably mounted on the support plate 151 through two bearings 152.
  • a gear 153 is fixed to the substantially center portion of the shaft 110.
  • the gear 153 is engaged with a gear 154, and the gear 154 is fixed to the output shaft of the motor 140 for elevating (upwardly and downwardly moving) the air suction grill as described above.
  • Reference numeral 141 represents a capacitor for the motor, and reference numeral 143 represents a timer for correction.
  • a pull switch (operating switch) is provided as an instructing unit to move the air suction grill 9 upwardly and downwardly as shown in Fig. 1.
  • a rotary type pull switch is used as the pull switch 51, upon repetitive pull operation of the switch, the air suction grill elevating motor 140 repetitively performs "forward rotation", “stop” and “backward rotation” in this order, and thus the air suction grill 9 also repetitively performs "downward motion", “stop”, “upward motion” and “stop” in this order.
  • the air suction grill repeats "downward motion", “stop”, “upward motion” and “stop” in this order by operating the rotary switch, so that the air suction grill can be stopped at any position by a simple operation.
  • the controller 160 In response to an instruction from the pull switch 51, the controller 160 outputs to a driver circuit 305 a control signal for controlling the forward rotation and the backward rotation of the elevating motor 140. In response to the control signal from the controller 160, the driver circuit 305 drives the elevating motor 140 at a predetermined speed.
  • the consumption current IC output from the driver circuit 305 to the motor is equal to about 170mA while the air suction grill does not reach the upper limit position.
  • the elevating motor 140 is rotated against the frictional force which occurs between the main pulleys 100A and 100B whose rotational speed is reduced or stopped and the shalt 11 which continues to rotate, and thus the load imposed on the elevating motor 140 is increased by the amount corresponding to the frictional force. Therefore, the consumption current IC output from the driver 305 for the elevating motor 140 is also increased.
  • the consumption current IC of the motor 140 ranges from about 300 mA to about 350 mA.
  • the consumption current IC for the elevating motor 140 is equal to about 60 mA while the air suction grill 9 does not reach the lower limit position.
  • the elevating motor 140 is still rotated by the driver circuit 305 even when the air suction grill 9 reaches the lower limit position, and thus the consumption current IC is increased to the range from about 100 mA to about 170 mA. That is, when the elevating motor 140 is still rotated even alter the air suction grill 9 reaches the lower limit position as described above, the pulleys 100A and 100B are rotated to rewind the suspending ropes 31 alter the whole suspending ropes are unreeled therefrom.
  • the substantially same load as when the air suction grill 9 is upwardly moved is imposed on the elevating motor 140, and thus the consumption current IC of the elevating motor 140 is increased to the range from about 100 mA to about 170 mA.
  • the driver circuit 305 is connected to consumption current detecting means 307 through an amplifier 303.
  • the consumption current detecting means 307 detects the consumption current IC of the elevating motor 140 at all times, and inputs the consumption current IC thus detected to the controller 160.
  • the controller 160 When the air suction grill 9 is in the progress of the upward motion and the consumption current IC is increased from 170mA to 300mA (first set value X) or more, the controller 160 outputs an operation stop command of the elevating motor 140, and also when the air suction grill 9 is in the progress of the downward motion and the consumption current IC is increased from 60mA to 100mA (second set value Y) or more, the controller 160 outputs the operation stop command of the elevating motor 140.
  • the output of the control signal to the driver circuit 305 is intercepted to stop the driving of the elevating motor 140.
  • the output of the control signal to the driver circuit 305 is not intercepted unless a predetermined time (for example, 4 seconds) is counted by a timer 309, and at the time when the predetermined time (for example, 4 seconds) is counted, the output of the control signal to the driver circuit 305 is intercepted to stop the driving of the elevating motor 140.
  • a time difference may occur in rewinding time among the four suspending ropes 31 fixed to the air suction grill 9, and thus even when the air suction grill 9 arrives at the upper limit position at one suspending rope side, it does not completely arrive at the upper limit position at the other suspending rope sides, so that the air suction grill 9 is not perfectly upwardly moved to the upper limit position.
  • the predetermined time as described above is set to an enough time which is needed until the other suspending ropes are also perfectly rewound up after one suspending rope is perfectly rewound up.
  • step S1 it is first judged whether the pull switch 51 is manipulated.
  • the pull switch 51 may be manipulated by using a pull-down rod or the like to pull the pull switch 51.
  • step S2 the control signal to rotate the elevating motor 140 forwardly is output from the controller 301, and input to the driver circuit 305 to forwardly rotate the elevating motor 140 and downwardly move the air suction grill 9.
  • step S3 the consumption current IC for the elevating motor 140 which is output from the driver circuit 305 is detected by the consumption current detecting means 307.
  • the air suction grill 9 is in the progress of the downward motion to the lower limit position, and thus it detects the consumption current IC of about 60mA as a detection value.
  • step S4 it is judged whether the pull switch 51 is manipulated again. If the pull switch 51 is judged to be manipulated, the process goes to step S8 to intercept the current flow into the elevating motor 140 and stop the air suction grill 9. However, if the pull switch 51 is not manipulated, the process goes to step S5 and the controller 160 judges whether the consumption current IC increases to 100mA or more as the second set value Y. If the consumption current IC does not increase to the second set value Y, the process returns to the step S3. On the other hand, if the consumption current IC increases to the second set value Y, the process goes to step S6 to output the operation stop signal from the controller 160.
  • step S7 the controller 301 intercepts the control signal to be output to the driver circuit 305, whereby the current to be supplied to the elevating motor 140 is intercepted and the air suction grill 9 is stopped. Thereafter, the process goes to step S9.
  • step S9 it is judged whether the pull switch 51 is manipulated. If the pull switch 51 is not manipulated, the process returns to the step S8. However, if the pull switch 51 is manipulated, the process goes to step S10 to output from the controller 301 the control signal for backwardly rotating the elevating motor 140, and the control signal is input to the driver circuit 305 to backwardly rotate the elevating motor 140 and upwardly the air suction grill 9.
  • step S11 the consumption current IC of the elevating motor 140 is detected by the consumption current detecting means 307. In this case, the air suction grill 9 is in the progress of the upward motion to the upper limit position, and thus the detection value of the consumption current IC is equal to about 170mA, for example.
  • step S12 it is judged whether the pull switch 51 is manipulated again. If the pull switch 51 is manipulated, the process goes to step S13 in which the controller 301 intercepts the current to be supplied to the elevating motor 140 and the air suction grill 9 is stopped. However, if the pull switch 51 is not manipulated, the process goes to step S14 in which the controller 160 judges whether the consumption current IC increases to the first set value X, for example, 300mA or more. If the consumption current IC does not reach the first set value X, the process returns to the step S10. However, if the consumption current IC reaches the first set value X, a start command is output from, the controller 160 to the timer 309 in step S15, and then the process goes to step S16.
  • step S13 the controller 301 intercepts the current to be supplied to the elevating motor 140 and the air suction grill 9 is stopped. However, if the pull switch 51 is not manipulated, the process goes to step S14 in which the controller 160 judges whether the consumption current IC increases to the first
  • step S16 in response to the start command, the timer 309 is started.
  • the set time of the timer 309 is set to 4 seconds, for example.
  • step S17 it is judged when the time counted by the timer 309 reaches the set time (for example, 4 seconds). If the count time of the timer 309 is beyond 4 seconds, the process goes to step S18 to output the operation stop signal from the controller 301, and then the process goes to step S19.
  • step S19 the controller 301 which outputs the operation stop signal intercepts the control signal to be output to the driver circuit 305, whereby the elevating motor 140 is stopped and thus the air suction grill 9 is stopped. Thereafter, the process returns to the step S1.
  • the timer 309 counts the set time (4 seconds) and then the elevating motor 140 is stopped. Therefore, the elevating motor 140 continues to be rotated for 4 seconds. During this time (4 seconds), the main pulleys 100A and 100B are rotated while following the rotation of the shaft, and the suspending ropes 31 are strongly rewound, whereby the four corners of the air suction grill 9 is substantially surely brought into close contact with the decorative panel 7.
  • the downward motion of the air suction grill 9 is stopped (S8) by pulling the pull switch 51 as described above, so that the air suction grill 9 can be temporarily stopped at any position.
  • the air cleaning filter 24 (Fig. 4) is mounted on the upper portion of the air suction grill 9. Therefore, when the air suction grill 9 is pulled down from the ceiling 6 and temporarily stopped, the works of replacing the filter 24, cleaning the filter 24, etc. can be performed at a lower place. Accordingly as compared with works at a higher place, not only the works can be more readily performed, but also the safety for the works can be enhanced.
  • the shalt 110 is driven to rotate the main pulleys 100A and 100B which are linked through the clutch to the shalt 110, and the suspending ropes 31 which are wound around the main pulleys 100A and 100B are unreeled/rewound to thereby automatically move the air suction grill 9 upwardly and downwardly. Therefore, when a maintenance work is performed on the air cleaning filter 24, the work may be performed after the air cleaning filter 24 is pulled down to the lower position (or any position).
  • the air suction grill 9 when the air suction grill 9 is downwardly moved, the consumption current IC supplied to the elevating motor 140 is detected, and the air suction grill 9 is regarded as arriving at the lower limit position when the consumption current IC increases from 60mA to 100mA At this time, the current to be supplied to the elevating motor 140 is intercepted to stop the elevating motor 140, whereby the air suction grill 9 is stopped. Therefore, as compared with the case where the air suction grill 9 is stopped at the lower limit position by using a mechanical mechanism such as a limit switch or the like, the number of parts can be reduced to a smaller value, the construction can be more simplified, the cost can be more greatly reduced and the trouble rate can be also more lowered.
  • the air suction grill 9 is upwardly moved, the consumption current IC supplied to the elevating motor 140 is detected, and the air suction grill 9 is regarded as arriving at the upper limit position when the consumption current IC increases from 170mA to 300mA. At this time, the current to be supplied to the elevating motor 140 is intercepted to stop the elevating motor 140, whereby the air suction grill 9 is stopped. Therefore, as compared with the case where the air suction grill 9 is stopped at the lower limit position by using a mechanical mechanism such as a limit switch or the like, the number of parts can be reduced to a smaller value, the construction can be more simplified, the cost can be more greatly reduced and the trouble rate can be also more lowered.
  • the four suspending ropes are not necessarily kept equal in length so that the air suction grill 9 is kept in a horizontal position. That is, the air suction grill 9 may be lifted with being inclined.
  • the timer 309 operates to count the predetermined time (for example, 4 seconds) alter the air suction grill 9 arrives at the upper limit position, and then the rotation of the elevating motor 140 is stopped after 4 seconds elapses.
  • the rotation of the main pulleys 100A and 100B is continued until all the suspending ropes 31 are perfectly rewound, so that the air suction grill 9 is perfectly lifted up until it is kept in a horizontal position and brought into close contact with the decorative panel 7.
  • the main pulley 100A, 100B around which one of the four suspending ropes 31 has been perfectly rewound is stopped against the rotation on the shaft portion of the shaft 110 as described above.
  • the controller 160, the consumption current detecting means 307 and the timer 309, that is, a small number of parts are used as a mechanism for stopping the air suction grill 9 at the upper limit position after the air suction grill 9 is upwardly moved, so that the cost can be reduced by the amount corresponding to the reduced number of parts, and also the failure rate can be reduced.
  • the upwardly moved air suction grill 9 may be fixed to the decorative panel through air suction grill lock means (not shown).
  • the lock means is not indispensable, and it is omitted in this embodiment.
  • a magnet 43 may be provided to the decorative panel 7 as shown in Fig. 1 to lock the air suction grill 9 by the magnet 43.
  • the means for absorbing the different in length between the suspending ropes fixed to the right and left sides of the air suction grill 9 after the air suction grill 9 arrives at the upper limit position is not limited to the combination of the main pulleys 100A and 100B and the shaft 11 which are frictionally engaged with each other, and the timer 309.
  • a lever for pulling up the suspending ropes 31 by a spring force may be provided between the main pulley 100B and the rope guide 200.
  • the rope guides 200 may be designed to be upwardly urged by the spring force.
  • the tension of the suspending rope 31 at one of the right and left sides of the air suction grill 9, which first arrives at the upper limit position is increased, and it pushes down the rope guide 200 against the spring force. Therefore, the suspending rope 31 is rewound by the amount corresponding to the push-down of the rope guide 200. Accordingly, the other side of the air suction grill 9 which does not reach the upper limit position can be upwardly moved to the upper limit position.
  • the present invention is applied to an air conditioner having no air suck-in port in the elevating panel as shown in Figs. 8 to 10.
  • reference numeral 2000 represents a box type unit body which is embedded in the ceiling.
  • a heat exchanger 1600, an air blower 1000, etc. are accommodated in the unit body 2000 as shown in Fig. 9.
  • a decorative panel 700 having air blow-out ports 400 at the both ends thereof is fixed to the lower end of the unit body 2000, and a filter receiving member 501 of metal plate is engagedly held at an inward portion of the center opening of the decorative panel 700.
  • air filters 240 are brought into contact with receiving portions 501a of the filter receiving member 501, and a center panel (elevating panel) 900 of metal plate is provided at the front portion of the center opening of the decorative panel 700 so that a space serving as an air suck-in port 300 remains at each of both the sides thereof.
  • the air filters 240 are mounted on the center panel 900 through leg portions 100, and these air filters 240 are suspended to the decorative panel 700 through four ropes 310 so as to be freely movable upwardly and downwardly relatively to the decorative panel 700.
  • respective one ends 310a of the four suspending ropes 310 are fixed to the center panel 900 at suitable four places thereof.
  • the other ends of the four suspending ropes 310 are extended upwardly, wound around the rollers 210, extended in a substantially horizontal direction and then linked to an elevating mechanism 1500 having the same construction as the first embodiment.
  • the elevating mechanism 1500 is fixed onto a metal plate 1510 which is bridged substantially at the center of the open portion of the decorative panel 700 as shown in Fig. 8.
  • the air filters 240 are provided on the center panel 900 of metal plate through the leg portions 100. Therefore, even when vibration occurs during the upward or downward motion of the center panel 900, dust which is attached to the air filters 240 falls onto the upper surface of the center panel, and collected there. Accordingly, during a work of replacing the air filters 240 or the like, the dust attached to the filters 240 is prevented from falling onto the floor, and thus this makes the room very sanitary. Therefore, even when the present invention is applied to air conditioners in factories, stores, etc. for food, the trouble due to falling of dust can be perfectly avoided.
  • the operation stop command is output to stop the elevating motor. Therefore, when the elevating panel arrives at the upper limit position, the elevating panel can be stopped. In this case, the number of parts can be reduced, so that the cost can be lowered and the failure rate can be also reduced.
  • the elevating panel when in the progress of the downward motion of the elevating panel, the elevating panel arrives at the lower limit position and the consumption current is equal to the set value or more, the elevating motor can be immediately stopped. In this case, the number of parts can be also reduced, so that the cost can be lowered and the failure rate can be reduced.
  • the motion of the elevating panel can be freely switched between the upward motion and the downward motion, and the above effect can be obtained in both the upward motion and the downward motion of the elevating panel.
  • the elevating motor is set to be stopped after a predetermined time elapses. Therefore, after the elevating panel arrives at the upper limit position, the elevating panel can be stopped alter the four corners of the elevating panel can be brought into close contact with the bottom face of the in-ceiling type air conditioner to correct the inclination of the elevating panel. In this case, the number of parts can be reduced, so that the cost can be lowered and the failure rate can be also reduced.
  • the elevating motor when the consumption current is over the set value in the progress of the upward motion of the elevating panel, the elevating motor is set to be stopped alter a predetermined time elapses. Therefore, after the elevating panel arrives at the upper limit position, the elevating panel can be stopped alter the four corners of the elevating panel can be brought into close contact with the bottom face of the in-ceiling type air conditioner to correct the inclination of the elevating panel. In this case, the number of parts can be reduced, so that the cost can be lowered and the failure rate can be also reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Air Conditioning Control Device (AREA)
EP97113236A 1996-08-08 1997-07-31 Klimagerät für Deckenmontage mit Steuerung der Auf- und Abbewegung der Hebevorrichtung Expired - Lifetime EP0823598B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP22596296A JP3552851B2 (ja) 1996-08-08 1996-08-08 天井埋込型空気調和機
JP22596296 1996-08-08
JP225962/96 1996-08-08

Publications (3)

Publication Number Publication Date
EP0823598A2 true EP0823598A2 (de) 1998-02-11
EP0823598A3 EP0823598A3 (de) 2001-04-11
EP0823598B1 EP0823598B1 (de) 2003-11-19

Family

ID=16837620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97113236A Expired - Lifetime EP0823598B1 (de) 1996-08-08 1997-07-31 Klimagerät für Deckenmontage mit Steuerung der Auf- und Abbewegung der Hebevorrichtung

Country Status (7)

Country Link
EP (1) EP0823598B1 (de)
JP (1) JP3552851B2 (de)
KR (1) KR100458541B1 (de)
CN (1) CN1100237C (de)
DE (1) DE69726228T2 (de)
ES (1) ES2212017T3 (de)
PT (1) PT823598E (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101929710A (zh) * 2009-06-23 2010-12-29 大金工业株式会社 空调机的室内机
CN108332287A (zh) * 2018-01-04 2018-07-27 珠海格力电器股份有限公司 空调室内机及其控制方法、空调器

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4224276B2 (ja) * 2002-10-15 2009-02-12 東芝キヤリア株式会社 天井埋込型空気調和機
CN100432548C (zh) * 2004-09-24 2008-11-12 乐金电子(天津)电器有限公司 吸顶式空调机的室内机
CN1888691B (zh) * 2005-06-30 2010-08-25 乐金电子(天津)电器有限公司 空调器升降格栅的控制装置及控制方法
JP3998032B1 (ja) * 2006-04-18 2007-10-24 ダイキン工業株式会社 空気調和装置の室内機
KR100725816B1 (ko) * 2006-07-10 2007-06-08 삼성전자주식회사 천장형 공기조화기 및 그 제어방법
KR101111728B1 (ko) * 2006-11-20 2012-02-15 삼성전자주식회사 천장형 공기조화기
KR100787502B1 (ko) * 2006-12-05 2007-12-21 삼성전자주식회사 천장형 공기조화기
KR101090093B1 (ko) 2009-02-25 2011-12-09 주식회사 엠.에스.라이팅 공기정화 및 조명 복합장치
KR101035010B1 (ko) 2009-02-25 2011-05-17 주식회사 엠.에스.라이팅 공기정화 및 조명 복합장치
CN103851697A (zh) * 2012-12-04 2014-06-11 海尔集团公司 一种隐式空调
KR101662828B1 (ko) * 2015-04-14 2016-10-06 (주)신한전기 천장형 공기조화기용 승강패널승하강장치
CN106091262B (zh) * 2016-06-17 2019-11-05 珠海格力电器股份有限公司 一种空调面板控制装置及方法
CN106931616A (zh) * 2017-04-14 2017-07-07 珠海格力电器股份有限公司 面板组件及具有其的空调器
CN107687657B (zh) * 2017-08-04 2019-02-19 深圳市万佳安智能科技有限公司 一种用于厨房的具有清洁功能的空气净化设备
KR102235273B1 (ko) * 2017-12-21 2021-04-02 엘지전자 주식회사 공기조화기의 천장형 실내기
KR102351602B1 (ko) 2021-09-09 2022-01-14 장현실 천장형 공기조화기

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01315575A (ja) * 1988-06-15 1989-12-20 Aichi Emerson Electric Co Ltd 電動ブラインド
JP2532897Y2 (ja) * 1991-10-29 1997-04-16 三菱重工業株式会社 空気調和機
JPH0626667A (ja) * 1992-07-08 1994-02-04 Mitsubishi Heavy Ind Ltd 空気調和機
JP2923150B2 (ja) * 1992-11-20 1999-07-26 三菱重工業株式会社 空気調和機
JP2528252B2 (ja) * 1993-05-10 1996-08-28 弘治 高林 天井取付型空調装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101929710A (zh) * 2009-06-23 2010-12-29 大金工业株式会社 空调机的室内机
CN101929710B (zh) * 2009-06-23 2013-02-27 大金工业株式会社 空调机的室内机
CN108332287A (zh) * 2018-01-04 2018-07-27 珠海格力电器股份有限公司 空调室内机及其控制方法、空调器

Also Published As

Publication number Publication date
CN1177707A (zh) 1998-04-01
JPH1054578A (ja) 1998-02-24
ES2212017T3 (es) 2004-07-16
KR19980018467A (ko) 1998-06-05
PT823598E (pt) 2004-04-30
EP0823598B1 (de) 2003-11-19
DE69726228D1 (de) 2003-12-24
DE69726228T2 (de) 2004-09-02
CN1100237C (zh) 2003-01-29
KR100458541B1 (ko) 2005-06-13
EP0823598A3 (de) 2001-04-11
JP3552851B2 (ja) 2004-08-11

Similar Documents

Publication Publication Date Title
EP0823598B1 (de) Klimagerät für Deckenmontage mit Steuerung der Auf- und Abbewegung der Hebevorrichtung
EP0768500B1 (de) Liftvorrichtung für ein Absauggitter
EP0783155B1 (de) Verfahren zur Ermittlung der Adresse eines an einem Datenbus angeschlossenen Gerätes
US5958114A (en) Indoor unit of air-conditioner
JP3087736B2 (ja) 空気調和機
JP3134621B2 (ja) 空気調和装置のフィルタ着脱構造
JP2923150B2 (ja) 空気調和機
JP3507601B2 (ja) 天井埋込型空気調和機
JP3615325B2 (ja) 天井埋込型空気調和機
JP3760449B2 (ja) 空気調和機
JP3329320B2 (ja) 空気調和装置
JP2000130797A (ja) 天井設置型送風装置のグリル装置
JP3332025B2 (ja) 空気調和装置
JPH035503B2 (de)
CN216244604U (zh) 净化模块及风管机
JP3523736B2 (ja) 天井埋込型空気調和機
JPH0921545A (ja) 天井埋込型空気調和機
JPH0921546A (ja) 天井埋込型空気調和機
JPH11132499A (ja) 天井埋込型空気調和機
JPH06129705A (ja) 昇降式空調用グリル
JP3795950B2 (ja) 天井埋込型空気調和機
JP2001235213A (ja) 空気調和システム
JPH10196999A (ja) 天井埋込型空気調和装置
JP3625593B2 (ja) 天井埋込型空気調和機
JPH10300120A (ja) 空調機のグリル昇降装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB GR IT PT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

RIC1 Information provided on ipc code assigned before grant

Free format text: 7F 24F 11/00 A, 7F 24F 1/00 B

17P Request for examination filed

Effective date: 20010619

AKX Designation fees paid

Free format text: DE ES FR GB GR IT PT

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB GR IT PT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69726228

Country of ref document: DE

Date of ref document: 20031224

Kind code of ref document: P

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20040400195

Country of ref document: GR

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20040218

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2212017

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040820

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20140611

Year of fee payment: 18

Ref country code: GR

Payment date: 20140620

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140724

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20140708

Year of fee payment: 18

Ref country code: GB

Payment date: 20140730

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20140203

Year of fee payment: 18

Ref country code: IT

Payment date: 20140714

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 69726228

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69726228

Country of ref document: DE

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20160201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20150731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160202

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150731

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160202

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150731

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160201

REG Reference to a national code

Ref country code: GR

Ref legal event code: ML

Ref document number: 20040400195

Country of ref document: GR

Effective date: 20160202

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20160826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150801