ES2620369T3 - Indoor air conditioning unit - Google Patents

Abstract

A ceiling mounted indoor air conditioning unit, comprising: a body (20) having an opening (20a) on its lower surface from which air is absorbed at a time of operation of the indoor air conditioning unit (2) ; and a mobile panel (24), characterized in that it opens the opening (20a) by rotation at the time of said operation and closes the opening (20a) by rotation at the moment when said operation is stopped; wherein a center of rotation tree (63) of the mobile panel (24) is located in a position away from the proximity of the boundary between the body (20) and the mobile panel (24).

Description

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DESCRIPTION

Indoor air conditioning unit Field of technology

The present invention relates to a ceiling mounted indoor air conditioning unit.

Background of the technique

Conventionally, as a ceiling mounted indoor air conditioning unit, an indoor air conditioning unit that closes an opening in an ornamental panel with a movable panel that can be raised and lowered is widely known (see, for example, JP-A No. 10-196 999). In this indoor air conditioning unit, the mobile panel is hung by cables, the mobile panel descends as a result of lifting and lowering devices that release said cables, and the mobile panel rises as a result of the lifting and lowering devices They pick up the wires.

The mobile panel descends at a time of maintenance of the filters, and the mobile panel ascends and closes the opening at a time of operation and a moment of shutdown. In other words, the opening opens completely only at the time of maintenance of the filters, and in a normal state the opening leaves a suction port on both sides and is always closed. In this indoor air conditioning unit, the suction port is always open, and the filters and the interior of the indoor unit are exposed through that suction port, so that the design strongly suffers.

Therefore, the applicant carried out a study of an indoor air conditioning unit that rotatably supports, with a joint system near the suction port, a mobile panel that can be raised and lowered and closes the suction port in a moment when the operation stops. However, the applicant discovered that in order to avoid interference with the periphery of the suction port when the mobile panel opens the suction port at the same time as it rotates, the separation distance between the mobile panel and the periphery of the suction port is made wide, and in turn that separation distance worsens the design.

JP-A-11 063553 A describes an air conditioner embedded in the ceiling in which an articulation shaft, by means of which a suction grid is pivotally connected to a decorative panel, is immediately located at along one side, that is, it is positioned immediately adjacent to the border between the decorative panel and the suction grille, to allow the latter to be easily mounted / removed.

Reference is also made to the wall-mounted air conditioning unit described in JP-A-527277 A in which a suction grid is pivotally fixed to a decorative frame by means of sliding trees in the grid of suction that are retained at one end of the grooves of the decorative frame. When the grid is pulled forward, the sliding trees slide and disengage from the grooves, thus releasing the grid from the decorative frame. This arrangement makes the air conditioning unit unsuitable for ceiling mounting.

Description of the invention

According to the invention, a ceiling mounted indoor air conditioning unit is provided comprising: a body having an opening in its lower surface from which air is absorbed at the time of operation of the indoor air conditioning unit; and a mobile panel that opens the opening by means of a rotation at the time of said operation and closes the opening by means of a rotation at the moment when said operation is stopped; where a tree of rotation center of the mobile panel is located in a position away from the fence of the border between the body and the mobile panel.

Embodiments of the present invention provide an indoor air conditioning unit that rotatably supports a mobile panel with an articulation system in the vicinity of a suction port, an indoor air conditioning unit that can set the value to a small value. separation distance between the mobile panel and the periphery of the suction port.

In this indoor air conditioning unit, when the mobile panel opens the opening, the mobile panel opens the opening while extending the separation distance between the body and the mobile panel, so that the body and the mobile panel do not interfere between sf. As a result, the separation distance between the body and the mobile panel when the mobile panel is closing becomes small, and the design improves.

In one embodiment, the indoor air conditioning unit further comprises a lever that is removably mounted on the mobile panel and is coupled together with the mobile panel and the rotation center shaft. In this air conditioning unit, it is not necessary for the rotation center shaft, the lever, and the mobile panel

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they are integrated, so that the degree of freedom with which the center of rotation tree and the lever can be designed increases.

In a preferred embodiment, the mobile panel has an inclined portion in a portion adjacent to the body.

In this indoor air conditioning unit, the separation distance between the body and the mobile panel when the mobile panel is closing the opening is established so that the body and the mobile panel do not interfere with each other when the mobile panel opens the opening, and with a mobile panel that has an inclined portion, the separation distance becomes smaller compared to a mobile panel that does not have an inclined portion. As a result, the design improves.

In one arrangement, when the mobile panel opens the opening, the portion of the mobile panel with the shortest movement distance moves below the portion that had been the border between the body and the mobile panel when the mobile panel had closed the opening.

In this indoor air conditioning unit, when the mobile panel opens the opening, the mobile panel covers part of the peripheral edge of the opening, so that the separation distance seen from below is hidden, and the design improves.

The opening can be a suction port to absorb air. In this indoor unit of air conditioning, the separation distance between the body and the mobile panel when the mobile panel is closing the suction opening becomes small, and the design improves.

Brief description of the figures

For a better understanding of the invention, and to show how it can be carried out, reference will now be made, by way of example only, to the accompanying drawings, in which:

Fig. 1 is an exterior perspective view of an air conditioning unit belonging to an embodiment of the present invention.

Fig. 2 (a) is a side view of the air conditioning unit at a time when the operation is stopped, the

Fig. 2 (b) is a side view of the air conditioning unit at a time of operation, and Fig. 2 (c) is a view

side of the indoor air conditioning unit at a time of maintenance.

Fig. 3 is a cross-sectional view of the air conditioning unit.

Fig. 4 is a perspective view of an ornamental panel.

Fig. 5 is an exploded perspective view of an articulation coupling device.

Fig. 6 is a view of the arrangement of the parts within a lifting and lowering device.

Fig. 7 is a partial cross-sectional view of the indoor air conditioning unit when a mobile panel has opened a suction port.

Explanation of reference numbers

2 Indoor air conditioning unit

20 Body

20th Suction Port

24 Mobile panel

24d Inclined surface

61 Rotary Levers

63 First pins (center rotation trees)

Best way to carry out the invention

An embodiment of the present invention will be described below with reference to the figures. The following embodiment is a specific example of the present invention and is not intended to limit the technical scope of the present invention.

<Configuration of an indoor air conditioning unit 2>

Fig. 1 is an exterior perspective view of an indoor air conditioning unit belonging to the embodiment of the present invention. In Fig. 1, an indoor air conditioning unit 2 is equipped with a body 20 having a suction port 20a and a blowing port 20b on its inner surface, a mobile panel 24 that opens and closes

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the suction port 20a, and a first adjustment blade of the blow direction 52 that opens and closes the blow port 20b. The suction port 20a and the blow port 20b are adjacent although they are separated a certain distance from each other ^ to prevent the so-called short circuit from occurring - a phenomenon in which the air that has been blown through the blow port 20b is absorbed again by suction port 20a. The lower surface of the body 20 is covered by an ornamental panel 21 so that what is really exposed to the roof surface is the ornamental panel 21, and the contours of the suction port 20a and the blow port 20b are formed by the ornamental panel 21. Here, ornamental panel 21 is also included in body 20.

Fig. 2 (a) is a side view of the indoor air conditioning unit at a time when the operation is stopped, Fig. 2 (b) is a side view of the indoor air conditioning unit at a time of operation, and Fig. 2 (c) is a side view of the indoor air conditioning unit at a time of maintenance. In Figs. 2 (a), 2 (b) and 2 (c), when the indoor air conditioning unit 2 is stopped, the mobile panel 24 appears to be integrated with the ornamental panel 21. In Fig. 2 (b), when the indoor air conditioning unit 2 starts, the mobile panel 24 opens the suction port 20a and the first blower adjustment blade 52 opens the blower port 20b. One end of the mobile panel 24 is supported on the body 20 by joints, and the mobile panel 24 rotates and opens the suction port 20a.

Also, in Fig. 2 (c), the mobile panel 24 can be lowered to maintain a maintenance position that the user can manually reach in a state where the mobile panel 24 is hung from the cables 71 extending from the body 20 However, the mobile panel 24 cannot descend to the maintenance position in a state where its end is being supported by the body 20 through the joints, so that the mobile panel 24 first closes the suction port 20a and then descends to the maintenance position after the support has been released by the body 20.

Fig. 3 is a cross-sectional view of the indoor air conditioning unit. In Fig. 3, the indoor air conditioning unit 2 is also equipped with filters 9, a filter cleaning mechanism 10, an indoor heat exchanger 12, an indoor fan 13, a drain pan 14, and a module of blow port 50. At the time of operation of the indoor air conditioning unit 2, the suction port 20a and the blow port 20b open, the inner fan 13 rotates, and air is absorbed through the suction port 20a .

(Interior heat exchanger 12)

The internal heat exchanger 12 has a form in which two exchangers are adjacent in different inclined positions; For reasons of convenience of description, the heat exchanger on the upper side will be called an upper heat exchanger 12a and the heat exchanger on the lower side will be called a lower heat exchanger 12b.

The upper end of the upper heat exchanger 12a is located in the upper portion of the interior of the body 20, and the angle according to which the upper heat exchanger 12a tilts from its upper end to its lower end is set to be equal or greater than 45 ° and equal to or less than 60 ° (and preferably 55 °) with respect to a horizontal line, so that the condensation water travels reliably through the upper heat exchanger 12a in the direction of the tray drainage 14. For this reason, it is not necessary to place the drain pan 14 under the entire upper heat exchanger 12a and the drain pan 14 is located only below the bottom end of the upper heat exchanger 12a.

The upper end of the lower heat exchanger 12b is located near the lower end of the upper heat exchanger 12a, and the angle according to which the lower heat exchanger 12b tilts from its upper end to its lower end is less than 45 ° with relationship to a horizontal line. For this reason, the condensation water can potentially fall directly from it, so that the drain pan 14 is placed under the entire lower heat exchanger 12b.

(Indoor fan 13)

The inner fan 13 is a cross flow fan that has a dimension in width that is longer than its diameter, and absorbs air from a direction perpendicular to its axis of rotation, so that the inner fan 13 can absorb air from the sole suction port 20a and blow air into the only blow port 20b. The air that has been absorbed passes through the filters 9 and the internal heat exchanger 12 and enters the internal fan 13.

The air that has been blown from the inner fan 13 passes through the blow port module 50 and is emitted out of the blow port 20b. In the blow port 20b, the first blow direction adjustment blade 52 is located, which is a component of the blow port module 50; the angle of inclination of the first adjustment blade of the blowing direction 52 is adjustable by motor and, at the time the operation is stopped, the first adjustment blade of the blowing direction 52 closes the blowing port 20b . Between the inner fan 13 and the drain pan 14 and on one side of the blowing flow path 41a, a tongue portion 15 is disposed, and this tongue portion 15 prevents losses of blowing air and improves performance.

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<Filter cleaning mechanism 10>

As shown in Fig. 3, the indoor air conditioning unit 2 is provided with the filter cleaning mechanism 10 above the mobile panel 24. The members that make up the filter cleaning mechanism 10 are defined below.

(Filters 9)

The filters 9 are arranged on the front surface side of the internal heat exchanger 12 and remove dust from the air that is absorbed from the enclosure. Therefore, the filters 9 prevent the dust floating in the air from contaminating the surface of the internal heat exchanger 12. On some edge portions of the filters 9, zippers 101 are formed which engage with pinion gears 102a.

(Roller 102)

A roller 102 has pinon gears 102a. Pinion gears 102a engage with the zippers 101 of the filters 9 and rotate to thereby cause the filters 9 to move horizontally.

(Position detection switches 107)

The positions where the filters 9 stop are detected by position sensing switches 107. The position sensing switches 107 are arranged in the near end of a terminal housing portion 105 and in the near end of a terminal end. of a rear housing portion 106. On the outer sides of the position sensing switches 107, levers are mounted by joints, and when an external force is applied, the levers rotate and push the buttons of the position sensing switches 107 .

(Brush 108 and dust box 109)

A brush 108 is disposed on the opposite side of the roller 102 that crosses the filters 9 and touches the filters 9. A dust box 109 has a dust inlet port 109a at its upper portion on the side facing the blow port 20b and supports a rotation shaft of the brush 108 through bearings at both ends according to the direction of the length of the dust inlet port. In addition, a comb portion 109c that releases from the brush 108 the dust that the brush 108 has torn from the filters 9 is fixed to the dust inlet port.

(Filter cleaning operation)

In the indoor air conditioning unit 2, the filters 9 are periodically cleaned automatically by a control unit or by a remote controller when the user considers it necessary. The mechanism thereof is described below.

In Fig. 3, the zippers 101 of the filters 9 fit in the front housing portion 105, and one end of each of the zippers 101 (hereinafter referred to as first end portions) meshes with the pinion gears 102a. When the roller 102 rotates, the rotation is transmitted from the pinion gears 102a to the zippers 101, and the zippers 101 of the filters 9 are transported in the direction of the rear housing portion 106 by the roller 102. The roller 102 continues to rotate , so that the first end portions of the zippers 101 reach the proximal end of the rear housing portion 106.

When the filters 9 move, the dust that has adhered to the surfaces of the filters 9 is removed by the brush 108 and collected in the dust box 109. The brush 108 rotates at least during the period in which the filters 9 are they are moving from the front housing portion 105 towards the rear housing portion 106, and the direction of rotation thereof is an opposite direction to the direction of travel of the filters 9.

When the filters 9 move from the front housing portion 105 to the rear housing portion 106 and the dust extraction ends, the control unit causes the roller 102 to rotate in the reverse direction. The other end portions (hereinafter referred to as second end portions) of the zippers 101 of the filters 9 mesh with the pinion gears 102a, so that the rotation is transmitted from the pinion gears 102a to the zippers 101 and the filters 9 are moved in the direction of the front housing portion 105 by means of the roller 102. The roller 102 continues to rotate in the reverse direction, so that the second end portions of the zippers 101 reach the terminal end of the housing portion front 105.

<Devices associated with the operation of mobile panel 24>

Fig. 4 is a perspective view of the ornamental panel. As shown in Fig. 4, articulation coupling devices 6 and lifting and lowering devices 7 are arranged on the roof side surface of the ornamental panel 21.

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(Articulation coupling devices 6)

The articulation coupling devices 6 rotatably support one end of the mobile panel 24 when the indoor air conditioning unit 2 is in operation and release the support from one end of the mobile panel 24 when the mobile panel 24 descends to the maintenance position .

Fig. 5 is an exploded perspective diagram of the articulation coupling devices. In Fig. 5, each of the articulation coupling devices 6 has a rotation lever 61, a sliding member 62, a first pin 63, a pinion gear 64, a motor 65, a fixing member 66, a second pin 67, and screws 68. The rotation lever 6l is a U-shaped member, and a rod-shaped support shaft 61a protrudes outwardly from an end surface. In addition, a shaft hole 61b is formed in an end portion of the rotating lever 61.

In the slide member 62, a rack 62a is formed that meshes with pinion gear 64 and arms 62b that both sides of the shaft hole 61b on the rotation lever 61. Also, in the arms 62b a first hole is formed of sliding 62c, and at the base of the rack base 62a a second sliding hole 62d is formed. Motor 65 is a stepper motor and causes pinon 64 gear to rotate. Motor 65 has through holes 65a through which screws 68 pass.

In the fixing member 66 there is a sliding space 66a that slidably holds the sliding member 62, a gear space 66b in which the pinion gear 64 is inserted, and screw holes 66c to which they are threaded the screws 68. In addition, a first through hole 66d and a second through hole 66e are formed in the walls that form the sliding space 66a.

The sliding member 62 is located in the sliding space 66a in the fixing member 66, and the rotation lever 61 is located in the sliding member 62 so that the shaft hole 61b in the rotating lever 61 is sandwiched between the arms 62b of the sliding member 62. The first pin 62 is inserted from one end of the first through hole 66d in the fixing member 66, passes through the first sliding hole 62c in the sliding member 62 and the shaft hole 61b on the rotation lever 61, and reaches the other end of the first through hole 66d.

The second pin 67 is inserted from one end of the second through hole 66e, passes through the second sliding hole 62d in the sliding member 62, and reaches the other end of the second through hole 66e. As a result, the sliding member 62 can move horizontally in the sliding space along the first pin 63 and the second pin 67, and the rotating lever 61 can rotate around the first pin 63.

(Operation of articulation coupling devices 6)

In Fig. 4 and Fig. 5, when the motors 65 cause the pinon gears 64 to rotate, the driving force is transmitted to the zippers 62a that are geared with the pinon gears 64, the sliding members 62 slide to along the first pins 63, and the rotating levers 61 move in the direction of the mobile panel 24 or in the opposite direction in conjunction with the movement of the sliding members 62. Here, for the convenience of the description, rotation towards forward to the rotation of the motors 65 to move the rotary levers 61 in the direction in which the rotary levers 61 are coupled to the mobile panel 24, and will be called inverse rotation to the rotation of the motors 65 to move the rotary levers 61 in the direction in which the coupling between the rotating levers 61 and the mobile panel 24 is disengaged.

In the end portion of the mobile panel 24, support holes are arranged that meet the support shafts 61a of the rotating levers 61, and when the motors 65 rotate forward so that the support shafts 61a are inserted into the holes of support on the mobile panel 24, the coupling between the rotating levers 61 and the mobile panel 24 is established, and the mobile panel 24 can rotate around the first pins 63.

On the other hand, when the motor 65 rotates in the reverse direction so that the support shafts 61a exit the support holes in the mobile panel 24, the coupling between the rotating levers 61 and the mobile panel 24 is released, and the panel Mobile 24 cannot rotate around the first pins 63.

(Lifting and lowering devices 7)

Fig. 6 is a view of the arrangement of the parts within each of the lifting and lowering devices. In Fig. 6, each of the lifting and lowering devices 7 has a cable 71, a pulley 72, a coil 73, a pickup gear 74, a drive gear 75, a lifting and lowering motor 76, and a switch 77.

The pulley 72 comprises a pulley portion 72a and a cam portion 72b that are integrally molded, and the pulley portion 72a supports the cable 71 and rotates accompanying the movement of the cable 71. The cam portion 72b

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It comprises a curved surface of small diameter, a curved surface of large diameter, and a flat surface that interconnects both curved surfaces.

The coil 73 picks up the cable 71. The pickup gear 74 is coaxially coupled to, and rotates integrally with, the coil 73. The drive gear 75 meshes with the pickup gear 74 and causes the coil 73 to rotate.

The lifting and lowering motor 76 is a stepper motor and causes the drive gear 75 to rotate. The speed of the lifting and lowering motor 76 is controlled by a plurality of pulses supplied from the control unit. The control unit has an embedded CPU, a memory and a motor drive circuit and is arranged in another position away from the lifting and lowering device 7. The control unit is electrically connected to the lifting and lowering motor 76 by means of a conductor cable

The switch 77 is a micro switch that has a lever 77a and is in the ON position as a result of the pressure on the lever 77a. The lever 77a always touches the cam portion 72b of the pulley 72 and is pushed when it meets the curved surface of large diameter of the cam portion 72b. The switch 77 is also electrically connected to the control unit by means of a conductor cable.

(Operation of lifting and lowering devices 7)

In Fig. 6, when the lifting and lowering devices 7 release the cables 71, the lifting and lowering motors 76 cause the driving gears 75 to rotate in the CCW direction and cause the pick-up gears 74 to rotate in the CW direction. Therefore, the coils 73 rotate in the direction in which they release the cables. 71.

On the other hand, when the lifting and lowering devices 7 pick up the cables 71, the lifting and lowering motors 76 cause the driving gears 75 to rotate in the CW direction and cause the pick-up gears 74 to rotate in the CCW direction. Therefore, the coils 73 rotate in the direction in which they collect the cables 71. The unwinding and picking lengths of the cables are proportional to the magnitude of the rotation of the lifting and lowering motors 76, and the magnitude of unwinding and the The magnitude of cable collection 71 is controlled as a result of the control of the number of pulses control unit that supplies the lifting and lowering motors 76.

The mobile panel 24 is coupled to the distal ends of the cables 71, so that there is always tension in the cables 71, and when the cables 71 are released or when the cables 71 are collected, the pulley portions 72a rotate due to the friction forces with the cables 71. At this time, the cam portions 72b also rotate, so that the switches 77 emit signals ON when the levers 77a face the curved surfaces of large diameter of the cam portions 72b and emit signals OFF when levers 77a face curved surfaces of small diameter. Although pulleys 72 are rotating, signals ON and signals OFF are generated alternately, and these signals are introduced into the control unit.

(Opening and closing operation of the mobile panel)

Fig. 7 is a partial cross-sectional view of the indoor air conditioning unit when the mobile panel has opened the suction opening. In Fig. 7, when the opening and lowering devices 7 release the cables 71 in a state in which the articulation coupling devices 6 are coupled to the mobile panel 24, the mobile panel 24 descends due to its own weight. However, since the end portion of the mobile panel 24 is coupled to the articulation coupling devices 6, the mobile panel 24 rotates around the first pins 63 in the direction in which it opens the suction opening 20a.

The first pins 63 are located in the sandwiched space between the suction port 20a and the blowing port 20b in the body, and the end portion of the mobile panel 24 that is closest to the body 20 rotates at the same time as it travels a large circular arc, so that the mobile panel 24 does not interfere with the peripheral edge of the suction port 20a. In addition, the surface of the mobile panel 24 on the side near the center of rotation is configured as an inclined surface 24d and inclined upwardly moving the center of rotation, so that when the mobile panel 24 rotates, the mobile panel 24 does not interfere with the peripheral edge of the suction port 20a.

Also, when the mobile panel 24 opens the suction port 20a, the portion of the mobile panel 24 with the shortest distance of movement - that is, the edge of the lower surface on the side near the center of rotation of the mobile panel 24 - it moves under the portion that had constituted the boundary between the body 20 and the mobile panel 24 when the mobile panel 24 had closed the suction port 20a, so that the boundary between the body 20 and the mobile panel 24 seen from below It is hidden. As a result, the design of the indoor air conditioning unit 2 improves.

When the lifting and lowering devices 7 pick up the cables 71, the mobile panel 24 ascends, but since the end portion of the mobile panel 24 is coupled to the articulation coupling devices 6, the mobile panel 24 rotates around the first pins 63 in the closing direction of the suction port 20a.

(Operation of raising and lowering the mobile panel)

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When the articulation coupling devices 6 release their coupling with the mobile panel 24 and the lifting and lowering devices 7 release the cables 71, the mobile panel 24 descends due to its own weight. When the lifting and lowering devices 7 collect the cables 71, the mobile panel 24 ascends and closes the suction port 20a.

<characteristics>

(one)

In the indoor air conditioning unit 2, the first pins 63 which are rotation center trees of the mobile panel 24 are arranged in a position away from the border of the boundary between the body 20 and the mobile panel 24. When the mobile panel 24 opens the suction port 20a, the mobile panel 24 opens the suction port 20a at the same time that it widens the separation distance between the body 20 and the mobile panel 24, so that the body 20 and the mobile panel 24 do not interfere one with another. As a result, the separation distance at the border between the body 20 and the mobile panel 24 when the mobile panel 24 closes the suction port 20a becomes small, and the design improves.

(2)

The mobile panel 24 and the first pins 63 are coupled to each other by means of rotary levers 61, but the rotary levers 61 and the mobile panel 24 are removable. In other words, it is not necessary for the first pins 63, the rotating levers 61, and the mobile body 24 to be integrated, so that the degree of design freedom increases.

Industrial applicability

As described above, the present indoor air conditioning unit is useful when it rotatably supports, with an articulation system near the suction port, a mobile panel that can be raised and lowered and closes the suction port at a time when operation stops.

Claims (5)

5 10 fifteen twenty 25 E09780831 1. A ceiling mounted indoor air conditioning unit, comprising: a body (20) having an opening (20a) on its lower surface from which air is absorbed at a time of operation of the indoor air conditioning unit (2); and a mobile panel (24), characterized in that opens the opening (20a) by rotation at the time of said operation and closes the opening (20a) by rotation at the time said operation is stopped; wherein a rotation center shaft (63) of the mobile panel (24) is located in a position away from the fence of the boundary between the body (20) and the mobile panel (24). 2. The indoor air conditioning unit (2) according to claim 1, further comprising a lever (61) that is removably mounted on the mobile panel (24) and engages the mobile panel (24) and the center of rotation tree (63). 3. The indoor air conditioning unit (2) according to claim 1 or claim 2, wherein the mobile panel (24) has an inclined portion (24d) in a portion adjacent to the body (20). 4. The indoor air conditioning unit (2) according to any one of claims 1 to claim 3, wherein when the mobile panel (24) opens the opening (20a), the portion of the mobile panel (24) with the shortest movement distance is moved below the portion that had been the boundary between the body (20) and the mobile panel (24) when the mobile panel (24) had closed the opening (20a). 5. The indoor air conditioning unit (2) according to any one of claims 1 to claim 4, wherein the opening (20a) is a suction port for absorbing air.