JP5748578B2 - Indoor unit for air conditioning - Google Patents

Description

  The present invention relates to an indoor unit for air conditioning that is installed in an air-conditioned room and performs cooling and heating, and more specifically, an air conditioning room that can easily perform maintenance and cleaning of a mounted blower fan and its drive unit. Related to the machine.

  Depending on the installation conditions in the air-conditioned room, the air-conditioning indoor unit of the refrigeration cycle equipment installed in the air-conditioned room for cooling or heating may be always hygienic or early in the air-conditioning indoor unit due to salinity. For reasons such as preventing deterioration, it is desirable to periodically clean each part in the machine.

  For example, an indoor unit described in Patent Document 1 is known as an indoor unit for air conditioning equipped with a mechanism suitable for periodically cleaning each component in the machine. This indoor unit for air conditioning has a structure in which the top plate can be placed on the top plate support member and moved back and forth, and the top plate is moved to the front of the main body casing to perform maintenance and cleaning of the blower fan and its drive unit. Is what you do.

JP 2010-117105 A

  However, in the above-described air conditioning indoor unit, a heavy fan such as a fan fan, a fan casing surrounding the fan fan, and a drive unit that rotationally drives the fan fan are attached to the lower surface of the ceiling plate. Friction is large due to line contact with the plate support member, and it is difficult for one person to put in and out the top plate. Moreover, since the top plate and the top plate support member are always in line contact, it is difficult to maintain and clean the top plate support member.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an air conditioning indoor unit that can be easily put in and out of the top plate and can improve maintenance and cleaning workability.

Air conditioning indoor unit according to the present invention in order to achieve the above object, left and right side plates, a top plate is supported on the side plate, back plate, the main body casing is made of a front plate and a bottom plate, wherein in the main body casing the indoor heat exchanger is disposed between the left and right side plates, the lower surface of the top plate, a blower fan for blowing the air from the indoor heat exchanger, the driving unit is mounted for rotating the blowing fan, and the top An indoor unit for air conditioning equipped with a top plate moving mechanism for moving the plate in the front-rear direction,
The top plate moving mechanism is
The lower surface is opened, is formed in a long box-shaped sheet metal in the longitudinal direction, a pair of table support members metal plate of this box type is respectively supported on the left and right side plates,
Secured to said top support member, a plurality of first roller which rotates in the direction of movement of the top plate, in the configuration,
A plurality of through holes are formed on the top surface of the top plate support member, and the plurality of first rollers are fixed to the top plate support member in a state of protruding from the through holes by a first roller support member,
A position opposed to the top plate support member of the top plate, a plurality of bosses having a recess dented upward is formed,
The top plate is moved in the longitudinal direction in a state of riding on the first roller of said plurality when said first roller is fitted into the recesses of the bosses, contact the lower surface of the top plate is the top plate support member and, wherein the top plate is temporarily fixed in its position,
A stopper is attached to the lower surface of the top plate, and the stopper contacts the stepped portion provided at the front portion of the top plate support member, thereby preventing the top plate from falling off from the main body casing,
A through hole is formed in the lower part of the stopper, and a second roller that rotates in the moving direction of the top plate is fixed to the stopper in a state of protruding from the through hole by a second roller support member,
The second roller contacts the top plate support member when the top plate moves in the front-rear direction .

  In the indoor unit for air conditioning of this invention, since the roller is used for the moving mechanism of the top plate, the frictional resistance can be reduced by rotating the roller when the top plate is pulled out. Further, the roller of the top plate moving mechanism fits into the recess of the boss provided on the top plate, so that the top plate can be easily positioned during use and maintenance of the air conditioning indoor unit.

It is a front view of the indoor unit for air conditioning concerning Embodiment 1 of this invention. FIG. 2 is a perspective view showing a state in which the top plate is pulled out using the top plate moving mechanism in the air conditioning indoor unit of FIG. 1. It is the arrow sectional drawing which cut | disconnected the indoor unit for air conditioning of FIG. 1 by the AA line. FIG. 3 is a development view of the top board moving mechanism according to the first embodiment. It is principal part sectional drawing which expanded and showed the roller part of FIG. It is sectional drawing which shows progress in the middle of pulling out a top plate. It is sectional drawing which shows the drawer position of the top plate at the time of in-machine cleaning. It is the principal part top view which looked at the top plate and the top plate support member from the downward direction. It is the perspective view which looked at the top plate and the top plate support member from the lower part. It is a principal part perspective view which shows the modification of the top plate moving mechanism which attached the roller support member to the stopper. It is a perspective view which shows the roller in Embodiment 2 of this invention. FIG. 10 is a perspective view showing a main part of a spherical boss of a top plate according to a second embodiment. It is a figure explaining the effect of the roller of Embodiment 2.

Embodiment 1 FIG.
FIG. 1 is a front view showing a state in which a front plate of an air conditioning indoor unit according to Embodiment 1 of the present invention is removed. FIG. 2 is a perspective view showing a state in which the top plate is pulled forward using the top plate moving mechanism.

  As shown in FIG. 1, an air conditioning indoor unit 1 has a rectangular parallelepiped box shape by left and right side plates 2 and 3, a top plate 4, a back plate 5, a front plate 6 and a bottom plate 7 supported by the side plates 2 and 3. A main body casing 8 is provided. The side plates 2 and 3, the back plate 5, the front plate 6, and the bottom plate 7 are fixed with screws or the like with a strut material or a lateral frame material interposed between them. As will be described in detail later, the top plate 4 has a configuration independent of the side plates 2 and 3 and the back plate 5.

  Inside the main body casing 8 is an air passage that communicates the air suction port 21 at the lower front of the fan casing 12 with the opening at the upper surface of the fan casing 12. In this ventilation path, an indoor heat exchanger 9, which is a component part of a general-purpose air conditioning refrigerant circuit (not shown), is installed in an inclined arrangement with the front side raised. With the indoor heat exchanger 9 as a boundary, the ventilation path in the main casing 8 is divided into a primary side space 19 on the air inlet side and a secondary side space 20 on the air outlet side.

  A pair of support legs 18 are vertically suspended from the lower surface 4B of the top plate 4 so as to be separated in the left-right direction. A bearing 14 such as a ball bearing is attached to the lower end of the support leg 18. A rotary shaft 13 is bridged around these bearings 14 and is rotatably supported. Two blower fans 10 represented by a sirocco fan or the like are fixed in the middle of the rotating shaft 13.

  The fan casing 12 is fixed to the lower surface of the top plate 4 so as to surround the two blower fans 10. The peripheral portions of the rotary shaft 13 on both the left and right sides of each fan casing 12 are opened to form suction ports 12A (see FIG. 2). The fan casing 12 is arranged so that each outlet 12B is in a position where it communicates with the blowing opening 4A of the top 4 in a state where it is attached to the top 4 (see FIG. 2).

  A motor 38 is fixed on the lower surface of the top plate 4. The motor pulley 16 is attached to the rotational drive shaft of the motor 38, the fan pulley 15 is attached to one end of the rotational shaft 13, and the belt 17 is looped between the fan pulley 15 and the motor pulley 16. The rotational driving force of the motor 38 is transmitted to the blower fan 10 by these pulleys and belts.

  That is, the motor 38, the motor pulley 16, the belt 17, the fan pulley 15, and the rotating shaft 13 constitute a drive unit 11 that rotationally drives the blower fan 10. The blower fan 10 sucks the air in the secondary side space 20 from the indoor heat exchanger 9 through the suction port 12A and blows it out from the blowout port 12B.

Next, the configuration of the top plate moving mechanism will be described with reference to FIG. 3, FIG. 4, and FIG. FIG. 3 is a cross-sectional view taken along the line AA of the air conditioning indoor unit of FIG. 1, and the lower part is omitted because it is not directly related to the present invention. 4 is a development view of the top plate moving mechanism 100, and FIG. 5 is an enlarged cross-sectional view of the main part of FIG .

  As shown in FIG. 2 described above, when maintaining the blower fan 10 of the indoor unit 1 for air conditioning, it is desirable that the suction port 12A is out of the machine. In the present invention, this is realized by the top plate moving mechanism 100. As shown in FIG. 4, the top plate moving mechanism 100 basically includes a pair of top plate support members 41 and three rollers 40A and 40C fixed to the top plate support member 41 by a roller support member 48 (see FIG. 5). , 40D.

  As shown in FIG. 3, the side plates 3 and 4 of the main casing 8 have a top plate support member 41 formed of a box-shaped sheet metal that is long in the front-rear direction, with the front end portion slightly inclined downward from the horizontal state. It is attached. And the top plate 4 is arrange | positioned in the state which gets on a pair of top plate support member 41 supported by the side plates 3 and 4. As shown in FIG.

The top plate support member 41 is formed of a box-shaped sheet metal having five surfaces whose lower surfaces are opened, and through holes 41A, 41C, and 41D are provided at three locations on the upper surface 41E. Two through holes 41 are provided in the front (front plate 6 side) and one in the rear. The distance between the through hole 41A and the through hole 41C is the same as the distance for moving the top 4 to the maintenance position.
The through hole 41D is desirably provided as far as possible at a position where a roller support member 48 described later can be removed.

  The step portion 41F allows a stopper 44 described later to abut when the top plate 4 is further pulled out of the maintenance position.

  As shown in FIG. 5, the roller 40 </ b> A is supported by a roller support member 48 including a leg portion 42 and a bearing portion 43 in a rotatable state on the back of the sheet metal of the top plate support member 41. The leg portion 42 is formed of a U-shaped sheet metal and is provided with a hole for fastening the bearing portion 43 with a screw 46. The leg portion 42 is attached to the vicinity of the through hole 41A of the top plate support member 41 by welding.

  The bearing portion 43 is formed of a U-shaped sheet metal, and is provided with a U-shaped notch for inserting the roller 40 </ b> A and a hole for inserting the screw 46. Instead of fastening with the screw 46, the bearing portion 43 may be fixed to the leg portion 42 using a bolt and a nut. Further, a bearing such as a bearing can be used instead of the U-shaped notch.

  The roller 40 </ b> A (hereinafter, also collectively referred to as “roller 40”) has a cylindrical shape, and a shaft for insertion into a U-shaped notch of the bearing portion 43 is provided at the center. The axis of the roller 40 is set in a direction orthogonal to the longitudinal direction of the top plate support member 41 (that is, the direction in which the top plate 4 is pulled out). Examples of the material of the roller 40 include metal, resin, and rubber.

  As shown in FIG. 5, in a state where the bearing portion 43 into which the roller 40 </ b> A is inserted by the screw 46 is attached to the leg portion 42, a part of the roller 40 protrudes from the through hole 41.

  The top plate 4 is formed of a box-shaped sheet metal having five surfaces with an open upper surface. Four bosses 45 </ b> A to 45 </ b> D (hereinafter collectively referred to as “bosses 45”) are provided on the lower surface 4 </ b> B of the top plate 4. The boss 45 is obtained by making an H-shaped cut into the top plate 4 and bending the sheet metal inward, and has a dent formed upward. The bosses 45 are provided at two places on the left and right front sides of the top plate 4 and two places on the rear side. The positions of the bosses 45A, 45C and 45D are provided where the through holes 41A, 41C and 41D of the top plate support member 41 overlap the top plate at the position when the air conditioning indoor unit is used. The boss 45B is provided at a position where it fits with the roller 40D when the boss 45A fits with the roller 40C.

  As shown in FIG. 5, in a state where the roller 40A is fitted in the recess 4C of the boss 45A, the lower surface 4B of the top plate 4 and the upper surface 41E of the top plate support member 41 are in contact with each other without any gap. At this time, there is a slight gap between the recess 4C of the boss 45A and the roller 40A.

  Next, with reference to FIG. 3, FIG. 6, and FIG. 7, the process of pulling out the top 4 from the position when using the indoor unit for air conditioning will be described. As shown in FIG. 3, the roller 40A and the boss 45A, the roller 40C and the boss 45C, and the roller 40D and the boss 45D are temporarily fixed at the position when the air conditioning indoor unit is used. At this position, as shown in FIG. 8, the top plate 4 and the main body casing 8 (side plates 2 and 3) are fixed by fastening the top plate 4 and the top plate support member 41 using a top plate fixing screw 47. ing.

  In order to maintain the indoor unit 1 for air conditioning, when the top plate fixing screw 47 is removed and the operator pulls the top plate 4 forward (in the direction indicated by the arrow) from the position shown in FIG. 3, the roller 40A, the roller 40C, and the roller 40D is disengaged from the recesses of boss 45A, boss 45C, and boss 45D. In this state, the lower surface 4B of the top plate 4 is in contact with each roller 40, that is, the top plate 4 is on the roller 40, and the top plate 4 is rotated by rotating each roller 40 as shown in FIG. Can be pulled out.

  When the top plate 4 is pulled out to the maintenance position of FIG. 7, the roller 40C and the boss 45A, and the roller 40D and the boss 45B are fitted. Thereby, the top plate 4 can be temporarily fixed at the maintenance position.

  When the top plate 4 is pushed in after the maintenance is completed, the procedure is reversed. That is, when the operator pushes the front end of the top plate 4 rearward to release the fitting of the roller 40C and the boss 45A and the roller 40D and the boss 45B, the state shifts from the state shown in FIG. 7 to the state shown in FIG. When the top plate 4 is further pushed backward, it returns to the position when the air conditioning indoor unit shown in FIG. 3 is used.

  Here, the effect when the number of rollers 40 is changed will be described. When the roller 40 is attached to the left and right top plate support members 41 one by one, the roller 40 becomes a fulcrum (two-point support), the top plate 4 rattles up and down, and comes into contact with the casing and is scratched. When two rollers 40 are attached to the left and right top plate support members 41, when the top plate 4 is pulled out, the rollers 40 become fulcrums (two-point support), which is the same as when one roller is provided. On the other hand, when three rollers 40 are attached to the left and right top plate support members 41 as in the present embodiment, the top plate 4 is supported by the four rollers 40 when the top plate 4 is pulled out. There is no. It is not desirable to attach four or more rollers 40 to the left and right top plate support members 41 because the number of parts increases.

  Next, the function of the stopper 44 will be described with reference to FIG. When the top plate 4 is further pulled out at the position of the top plate 4 shown in FIG. 7 described above, the stopper 44 comes into contact with the step portion 41F of the top plate support member 41, and the top plate 4 falls off from the main body casing 8. To prevent. The stopper 44 is attached to the left and right sides of the top plate 4 with screws 46 after the top plate 4 is installed on the top plate support member 41. Since the stopper 44 is in contact with the side surface 41G of the top plate support member 41, the left and right rattling of the top plate 4 can be prevented.

  As described above, the top plate moving mechanism 100 according to the present embodiment has a structure in which the top plate 4 is put on the roller 40 and pulled out, so that the friction at the time of pulling is reduced, and the operator alone is the top plate. 4 can be pulled out to the maintenance position. Further, the boss 45 and the roller 40 of the top plate 4 are fitted at the maintenance position and the position when the air conditioning indoor unit is used, so that positioning can be performed easily.

  As shown in FIG. 3, the top plate support member 41 is supported by the side plates 2 and 3 in a tilted state so that the front end portion is slightly lower than the rear end portion. As a result, when the top plate 4 is inclined, a slight force is exerted in the forward direction and rolls on each roller, so that the drawer can be more easily performed. Further, when the top plate 4 is stored, the top plate 4 is pushed up obliquely from below, which makes it easier for the operator to apply power.

  Further, the top plate support member 41 and the top plate 4 are inclined forward, and a drain hole 50 is provided in the top plate 4 (see FIG. 2). When cleaning the main casing 8, the water accumulated on the top 4 is guided to the front of the main casing 8 due to the inclination of the top 4. The guided water can be extracted from the drain hole 50 of the top plate 4. In addition, if the inclination of the top plate 4 and the top plate support member 41 is about 0.5 degrees or more, water can be introduced.

  In FIG. 2, the drain holes are provided in two places, but if one or more places, the drain can be drained. It is desirable to arrange the water draining positions equally as shown in FIG. 2, but it is not limited to this because water draining may be difficult due to the structure in the machine.

  Further, in the top plate moving mechanism of the present embodiment, as shown in FIG. 5, when each boss 45 and each roller 40 are fitted, the load of the top plate 4 is not applied to the bearing portion 43. The bearing portion 43 of the roller support member 48 can be removed. As a result, the roller support member 48 can be cleaned in detail. In addition, maintenance such as inspection and replacement of each roller 40 is facilitated.

  As shown in FIG. 9, when the top plate 4 moves back and forth, the stopper 44 and the end surface of the side surface 41G of the top plate support member 41 come into surface contact. In order to avoid this, a through hole may be provided in the bottom of the stopper 44 as shown in FIG. 10, and a roller 40E and a roller support member 49 having the same structure as described in FIG. 4 may be attached. With such a configuration, the stopper 44 comes into contact with the top plate support member 41 via the roller 40E, so that the frictional resistance can be greatly reduced.

Embodiment 2. FIG.
11, 12 and 13 show the shapes of the rollers and bosses used in the top plate moving mechanism of the second embodiment. In the present embodiment, a ball-shaped roller 51 is used instead of the columnar roller 40 of the first embodiment. If a ball-shaped roller is employed, the top plate 4 is brought into point contact, so that friction can be further reduced.

  In order to correspond to the ball-shaped roller 51, a spherical boss 52 shown in FIG. 12 is used in place of the boss 45 of the first embodiment in which the top plate 4 is cut into an H shape. The boss 52 can be easily manufactured by forming a spherical recess in the sheet metal of the top plate 4 by pressing.

  As shown in FIG. 13, when the ball 51 is fitted into the spherical boss 52, the positions of the ball 51 and the spherical boss 52 may be shifted to create a gap between the stopper 44 and the side surface 41 </ b> G of the top plate support member 41. At this time, since the spherical boss 52 is spherical, the top plate 4 moves in the direction of the arrow in FIG. 13 due to gravity, and the ball 51 and the spherical boss 52 are fitted. In this way, the top plate 4 can be temporarily fixed accurately depending on the position when air conditioning is used.

DESCRIPTION OF SYMBOLS 1 Air conditioning indoor unit 2, 3 Side plate 4 Top plate 5 Back plate 6 Front plate 7 Bottom plate 8 Main body casing 9 Indoor heat exchanger 10 Blower fan 11 Drive part 12 Fan casing 12A Suction port 12B Outlet 13 Rotating shaft 14 Bearing 15 Fan Pulley 16 Motor pulley 17 Belt 18 Support leg 19 Primary side space 20 Secondary side space 21 Air suction port 38 Motor 40, 51 Roller 41 Top plate support member 41A, 41C, 41D Through hole 41F Stepped portion 42 Leg portion 43 Bearing portion 44 Stopper 45, 52 Boss 46, 47 Screw 50 Water drain hole

Claims (4)

Left and right side plates, a top plate is supported on the side plate, back plate, is configured main body casing in the front plate and the bottom plate, the disposed indoor heat exchanger between the left and right side plates of the main body casing, of the top plate An air-conditioning room having a blower fan for blowing air from the indoor heat exchanger and a drive unit for rotationally driving the blower fan on the lower surface, and having a top plate moving mechanism for moving the top plate in the front-rear direction Machine,
The top plate moving mechanism is
A pair of top plate support members, each of which is formed of a box-shaped sheet metal having a lower surface opened in the front-rear direction, and the box-shaped sheet metal supported by the left and right side plates;
A plurality of first rollers fixed to the top plate support member and rotating in a moving direction of the top plate;
A plurality of through holes are formed on the top surface of the top plate support member, and the plurality of first rollers are fixed to the top plate support member in a state of protruding from the through holes by a first roller support member,
A position opposed to the top plate support member of the top plate, a plurality of bosses having a recess dented upward is formed,
The top plate moves in the front-rear direction while riding on the plurality of first rollers, and when the first roller fits into the recess of the boss, the lower surface of the top plate contacts the top plate support member And the top plate is temporarily fixed at that position ,
A stopper is attached to the lower surface of the top plate, and the stopper contacts the stepped portion provided at the front portion of the top plate support member, thereby preventing the top plate from falling off from the main body casing,
A through hole is formed in the lower part of the stopper, and a second roller that rotates in the moving direction of the top plate is fixed to the stopper in a state of protruding from the through hole by a second roller support member,
The indoor unit for air conditioning wherein the second roller contacts the top plate support member when the top plate moves in the front-rear direction . The first roller support member is
Legs fixed to the top plate support member;
A bearing portion that supports the first roller in a rotatable state;
The indoor unit for air conditioning according to claim 1, wherein the bearing portion is attached to the leg portion using a fastening member.   The indoor unit for air conditioning according to claim 1 or 2, wherein the top plate support member is supported by the side plate in a state where a front end portion is lower than a rear end portion. Body is used the roller ball shaped as the first roller, the top plate, characterized in that the boss is formed with a recess spherical corresponding to the first roller, according to claim 1 The indoor unit for air conditioning as described in any one of 3 .

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