JP2010117105A - Indoor unit for air conditioning - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit for air conditioning capable of easily moving a top panel to a front part of a body casing to easily perform the maintenance and cleaning of air distribution fans and its drive part. <P>SOLUTION: This indoor unit 1 for air conditioning has the body casing 8 including right and left side plates 2, 3, the top panel 4 supported on the right and left side plates 2, 3, a back plate 5, a front plate and a bottom plate 7, an indoor heat exchanger 9 is disposed between the right and left side plates 2, 3 in the body casing 8, the air distribution fans 10, 10 for blowing off air from the indoor heat exchanger 9, and the drive part 11 for rotating and driving the air distribution fans 10, 10 are disposed on a lower face of the top panel 4, and top panel supporting members 30, 30 are disposed on upper parts of the right and left side plates 2, 3 to longitudinally movably support the top panel 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

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. More specifically, the present invention relates to an air conditioning unit that can easily perform maintenance and cleaning of an installed fan and its driving unit. It relates to indoor units.

  Depending on the installation conditions in the air-conditioned room, the indoor unit for air conditioning of the refrigeration cycle equipment installed in the air-conditioned room for cooling and heating must be kept clean for reasons of hygiene. It may be desirable to periodically clean each part. For example, an air conditioner indoor unit described in Patent Document 1 below is known as a countermeasure against such a situation. The indoor unit for air conditioning described in this document includes a rectangular box-shaped main body casing including left and right side plates, a top plate supported on the left and right side plates, a back plate, and a front plate. In this indoor unit for air conditioning, an indoor heat exchanger is provided in the main body casing, and a blower fan that sends out air from the indoor heat exchanger and a fan casing surrounding it on the lower surface of the top plate, and the blower fan rotate. A drive unit for driving is attached.

  When cleaning a blower fan that is dirty during use in this indoor unit for air conditioning, it is necessary to remove the duct and plenum on the blow-out side and the drive unit on the intake side, and it is very difficult to perform the cleaning. Therefore, an opening for maintenance is provided in the fan casing. The opening is covered with a screw or the like of the opening panel.

JP 2006-10177 A

  By the way, when cleaning the blower fan in the indoor unit for air conditioning described in the above-mentioned document, the opening of the fan casing is opened, and the blower fan is cleaned from this opening. However, since cleaning from the opening is difficult to achieve, it may be necessary to remove the duct, plenum, and drive unit, which requires great effort and care.

  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 easily perform maintenance and cleaning of the blower fan and its drive unit.

In order to achieve the above object, an air conditioning indoor unit according to the present invention has a main body casing including left and right side plates, a top plate supported on the left and right side plates, a back plate, and a front plate. An indoor heat exchanger is provided between the left and right side plates in the main casing, and a blower fan that blows air from the indoor heat exchanger and a drive unit that rotationally drives the blower fan are provided on the lower surface of the top plate. The top plate support members for supporting the top plate in a front-rear direction are freely installed on the left and right side plates.

  In the indoor unit for air conditioning according to the present invention, a top plate support member for supporting the top plate so that it can be moved back and forth is installed above the left and right side plates, and the top plate can be placed on the top plate support member and moved back and forth. It has a structure. Therefore, it is possible to easily move the top plate to the front of the main body casing, and it is possible to easily perform maintenance and cleaning of the blower fan and its driving unit.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a front view showing a state where a front plate of an air conditioning indoor unit according to an embodiment of the present invention is removed, and FIG. 2 is a side view showing a state where a left side plate is removed toward the drawing of the air conditioning indoor unit. FIG. 3 is a plan view of the air conditioning indoor unit.
In each figure, the indoor unit 1 for air conditioning according to this embodiment includes left and right side plates 2 and 3, a top plate 4 supported on the left and right side plates 2 and 3, a back plate 5, a front plate 6, A main body casing 8 formed in a rectangular box shape from the bottom plate 7 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 horizontal 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.
The inside of the main body casing 8 is an air passage that communicates the air suction port 21 at the lower front surface of the casing with the opening at the upper surface of the casing. In this ventilation path, an indoor heat exchanger 9, which is a component of a general-purpose air-conditioning refrigerant circuit (not shown), is installed in an inclined arrangement with the front side raised. With this indoor heat exchanger 9 as a boundary, the ventilation path in the main body casing 8 is partitioned into a primary space 19 on the air inlet side and a secondary space 20 on the air outlet side.

On the lower surface of the top plate 4, a pair of support legs 18, 18 are vertically suspended from each other in the left-right direction. Bearings 14 and 14 such as ball bearings are attached to the lower ends of the support legs 18 and 18. A rotary shaft 13 is bridged around these bearings 14 and 14 and is rotatably supported. Two blower fans 10, 10 typified by a sirocco fan or the like are fixed in the middle of the rotating shaft 13. Fan casings 12 and 12 surrounding the blower fans 10 and 10 are fixed to the lower surface of the top plate 4. The peripheral portions of the rotary shaft 13 on both the left and right sides of each fan casing 12 are opened to serve as suction ports 12A and 12A. Air outlets 12B and 12B are formed on the upper surfaces of the fan casings 12 and 12, respectively. The fan casings 12, 12 are arranged so that the respective outlets 12 </ b> B, 12 </ b> B communicate with the blowing openings 4 </ b> A, 4 </ b> A of the top plate 4 in a state where they are attached to the top plate 4.

A motor 38 is fixed on the lower surface of the top plate 4. A motor pulley 16 is attached to the rotational drive shaft of the motor 38, a fan pulley 15 is attached to one end of the rotational shaft 13, and a belt 17 is looped between the fan pulley 15 and the motor pulley 16. Thus, the rotational driving force of the motor 38 is transmitted to the blower fans 10 and 10. 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 fans 10 and 10. The blower fans 10 and 10 are configured to suck the air in the secondary side space 20 that has come out of the indoor heat exchanger 9 from the suction ports 12A and 12A and blow it out from the blowout ports 12B and 12B.

  Furthermore, a drain pan 22 that receives drain water from the indoor heat exchanger 9 is disposed at a position below the indoor heat exchanger 9 in the main body casing 8. An electrical component box 26 that stores electrical components for driving the motor 38 and the like is disposed in the main body casing 8 below the drain pan 22. In the main body casing 8, for example, the left side position in the drawing of the indoor heat exchanger 9 is a space portion through which the refrigerant pipe 23 passes vertically. By covering this space portion with the upper piping cover 25 and the lower closing plate 24, the above-described ventilation path is finally partitioned into the primary side space 19 and the secondary side space 20.

  As shown in FIG. 4, the top plate 4 includes a flat plate portion 4B, a front flange portion 4C extending forward from the flat plate portion 4B, and a front plate portion 4D standing up at a boundary portion between the flat plate portion 4B and the front flange portion 4C. The back plate portion 4E is erected at the rear end edge of the flat plate portion 4B. Blowing openings 4A and 4A are formed in the flat plate portion 4B at positions corresponding to the air outlets 12B and 12B of the fan casings 12 and 12, respectively.

Further, as shown in FIGS. 5 and 6, long prismatic receiving members 37, 37 are fixed to the upper portions of the inner surfaces 2 a, 3 a of the side plates 2, 3, respectively. On the upper surfaces of these receiving members 37, 37, top plate support members 30, 30 are respectively installed and fixed with screws or the like. Each top plate support member 30 is composed of a rail-like member 31 that is installed with the longitudinal direction set to the front and rear. The rail-shaped member 31 is produced by bending a thick sheet metal material such as a thickness of 2.3 mm.

The rail-shaped member 31 has an upward protrusion 32 formed by bending into a mountain shape. The surfaces of the upward projecting portions 32 facing the inner surfaces 2a and 3a of the left and right side plates 2 and 3 are formed as vertical surfaces 33, respectively. The upward protrusion 32 is also formed in a form that is continuous in the front-rear direction. Thereby, the top portion 32A of the rail-shaped member 31 places and supports the lower surface of the top plate 4 in a line contact state. Retaining members 34, 34 formed as long and continuous in the front-rear direction with a substantially “T” shape in front view are fixed to the lower surfaces of the left end portion 4 </ b> L and the right end portion 4 </ b> R of the top plate 4. ing. The escape preventing member 34 is manufactured by bending a thick sheet metal material having a thickness of 2.3 mm, for example. In this case, the escape preventing member 34 fixed to the right end portion 4R of the top plate 4 and the escape preventing member 34 fixed to the left end portion 4L of the top plate 4 are disposed in the opposite directions. These escape-preventing members 34, 34 are arranged such that their bent tip portions face the vertical surfaces 33, 33 of the rail-shaped members 31, 31 in a state where the top plate 4 is supported on the rail-shaped members 31, 31. Be placed. The gap between the bent distal end portions of the escape members 34, 34 and the vertical surfaces 33, 33 of the rail-like members 31, 31 should be as narrow as possible. However, the gap width is set so as not to hinder the smooth forward and backward movement of the top plate 4. It is desirable.

Above the top plate 4, for example, a flanged frame body 27 used for connecting to an external duct is provided. In the flanged frame body 27, a blowout opening 29 is formed at a position communicating with the blowout openings 4 A and 4 A of the top plate 4, and a duct connection flange 28 is erected around the entire periphery of the blowout opening 29. ing.
As shown in FIG. 7A, the flanged frame body 27 has leg portions 27A and 27A suspended from both left and right ends. These leg portions 27A, 27A are placed on the left and right receiving members 37, 37 and attached with screws or the like, whereby the flanged frame body 27 is fixed to the side plates 2, 3 as shown in FIG. Is done. At this time, a front opening 36 is formed between the front plate 6 of the main body casing 8 and the front side of the flanged frame 27, and the top plate 4 is stored from the front opening 36. The top plate 4 after storage has its left and right front ends fixed to the front portions of the side plates 2 and 3 with screws or the like. It should be noted that the left and right side plates are provided at the rear portions of the left end portion 4L and the right end portion 4R of the top plate 4 so that the top plate 4 drawn forward during maintenance or the like does not fall out from the front opening 36 of the main casing 8 unnecessarily. Engagement protrusions (not shown) are provided that are detachably engaged with the inner surfaces of the second and third surfaces. The installation position of the engaging protrusion is determined in consideration of a center of gravity that prevents the entire air conditioning indoor unit 1 from falling forward when the top 4 is pulled forward.

The operation of the air conditioning indoor unit 1 configured as described above will be described below.
First, after removing the screws that fasten the left and right front ends of the top plate 4 to the front portions of the side plates 2, 3, the front portion of the top plate 4 is held forward by hand as shown in FIGS. When pulled in the direction of arrow F, the top 4 slides on the top 32A of the upward projection 32 of the rail-shaped member 31 and moves forward. In this case, since the lower surface of the top plate 4 is supported in a line contact state on the top portion 32A of the upward projection 32 of the rail-shaped member 31, the sliding frictional force is relatively small and the contact position is as in the point contact state. The force does not concentrate too much and the contact part is not deformed.

Therefore, as shown in FIG. 8B, the top plate 4 can be easily slid forward of the main casing 8 with a relatively small force. Thereby, the fan casing 12 and the drive part 11 which have come out forward can be observed from below, from the left and right sides or from the back, and maintenance and cleaning can be easily performed by inserting a hand. Further, it is possible to confirm or repair the settling or tearing of the cushioning material (not shown) for sealing the top plate 4.
By the way, when the top plate 4 is pulled forward as described above, the escape members 34 and 34 of the top plate 4 are in sliding contact with the vertical surfaces 33 and 33 of the rail-shaped members 31 and 31. This restricts the side plates 2 and 3 from escaping and displacing to the left and right outwards (in the direction of arrow S or arrow -S in FIG. 6).
On the other hand, after the maintenance, the top plate 4 can be easily pushed back and stored in the main body casing 8 through the front opening 36 by simply pushing the top plate 4 backward (in the direction opposite to the arrow F) by hand. That is, the top plate support members 30 and 30 which are the rail-like members 31 support the top plate 4 so that it can be inserted and removed freely.

  As described above, the air conditioning indoor unit 1 of this embodiment has a structure in which the top plate 4 is simply placed on the left and right top plate support members 30 and 30 so as to be movable back and forth. The slide can be easily performed.

In this case, the top plate support member 30 is composed of a rail-like member 31 that is long in the front-rear direction, and the top plate 4 is supported in a line contact state on the top 32A of the upward projection 32 of the rail-like member 31. A large force is not required for the front / rear slide of the top 4. Therefore, even a single person can pull the top plate 4 out of the main casing 8 or push it back.

  When the top plate 4 is put in and out, the escape plates 34 and 34 of the top plate 4 are in sliding contact with the vertical surfaces 33 and 33 of the rail-shaped member 31, so that the side plates 2 and 3 are moved outward in the left and right directions. It is possible to prevent the top plate 4 from being opened and not supported, and to prevent the top plate 4 from swinging back and forth during back-and-forth sliding.

In the above embodiment, the contact state between the top plate and the top plate support member that supports the top plate is exemplified as the contact state in the line contact state, but the present invention is not limited thereto. The contact state between the top plate and the top plate support member of the present invention may be, for example, a point contact state or a surface contact state. In the case of a point contact state, either the top plate or the top plate support member is constituted by a planar member, and the other is constituted by a point support member.
Moreover, although the escape member 34 illustrated the long thing continuous in the front-back direction, for example, you may comprise the escape member of this invention with the combination of the several short member spaced apart by the front-back direction, for example. .
Moreover, although the example which comprised the pulleys 15 and 16 and the belt 17 as the drive part 11 was shown, the drive part of this invention is comprised by the combination of a sprocket and a chain, a several gearwheel etc., for example in addition to that. It is also possible to do.

It is a front view which shows the state which removed the front board of the indoor unit for an air conditioning which concerns on one Embodiment of this invention. It is a side view which shows the state which removed the left side board toward drawing of the said indoor unit for an air conditioning. It is a top view of the said indoor unit for an air conditioning. The top plate of the said indoor unit for an air conditioning is shown, (a) is a top view, (b) is an AA arrow directional cross-sectional view in (a). The state which removed the top plate of the said indoor unit for an air conditioning is shown, (a) is a top view, (b) is a fragmentary sectional view of the BB line arrow in (a). It is the principal part enlarged front view which the said indoor unit for air conditioning fractured | ruptured partially. The aspect which attaches a frame body with a flange to the main body casing of the said indoor unit for air conditioning is shown, (a) is a fragmentary perspective view which shows the state before attachment, (b) is a fragmentary perspective view which shows the state after attachment. The state which removed the front board of the indoor unit for air conditioning is shown, (a) is a fragmentary perspective view showing the state where the top board is stored in the main part casing, and (b) is the top board pulled out from the main part casing ahead. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner indoor unit, 2 side plate, 2a inner surface, 3a inner surface, 3 side plate, 4 top plate, 4A blowout opening, 4B flat plate portion, 4C front flange portion, 4D front plate portion, 4E back plate portion, 4L left end portion, 4R Right end portion, 5 Back plate, 6 Front plate, 7 Bottom plate, 8 Main body casing, 9 Indoor heat exchanger, 10 Blower fan, 11 Drive unit, 12 Fan casing, 12A Suction port, 12B Air 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 inlet, 22 Drain pan, 23 Refrigerant piping, 24 Closing plate, 25 Piping cover, 26 Electricity Product box, 27 Frame with flange, 27A Leg, 27B Indented part, 28 Flange for connecting duct, 29 Opening for blowing, 30 Top plate support member, 31 Rail-shaped part Material, 32 upward projection, 32A top, 33 vertical surface, 34 relief member, 36 front opening, 37 receiving member, 38 motor, 39 cushion material, F arrow, S arrow.

Claims (3)

The main body casing includes left and right side plates, a top plate supported on the left and right side plates, a back plate, and a front plate, and an indoor heat exchanger is provided between the left and right side plates in the main body casing. A blower fan that blows out air from the indoor heat exchanger and a drive unit that rotationally drives the blower fan are provided on the lower surface of the top plate, and the top plate is disposed on the upper side of the left and right side plates. An indoor unit for air conditioning characterized in that a top plate support member that supports the front and rear is freely installed. The top plate support member is composed of a rail-like member installed with the longitudinal direction set back and forth, and the top plate is supported on the rail-like member in a line contact state. Indoor unit for air conditioning. The rail-shaped member has an upward protrusion that supports the top plate at the top, and the surfaces facing the left and right side plates of the upward protrusion are each formed as a vertical surface, and the rail-shaped member is Relief that is installed on each inner surface of the side plate and that slidably contacts the vertical surface of the upward projection of the rail-like member at the left and right end portions of the top plate and restricts the left and right side plates from being displaced outwardly. The air conditioning indoor unit according to claim 2, wherein a member is provided.

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