JP5349014B2 - Indoor unit for air conditioning - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning indoor unit allowing easy maintenance and cleaning of a blowing fan and its driving part by easily moving a top panel to the front part of a body casing without removing an exterior duct. <P>SOLUTION: The air conditioning indoor unit 1 comprises the body casing 8 equipped with side panels 2, 3, the top panel 4, a back panel 5, and a front panel. An indoor heat exchanger 9 is arranged inside the body casing 8. The blowing fan for blowing air from the indoor heat exchanger 9 and the driving part 11 for rotating/driving the blowing fan are provided on a lower surface of the top panel 4. The top panel 4 is formed with a blowing opening for blowing the air from the blowing fan. A cover element 27 covering over the top panel 4 and having a front-face opening part 36 is fixed to an upper end part of the body casing 8. The top panel 4 is supported by the body casing 8 to be inserted/drawn out back and forth from the front-face opening part 36 of the cover element 27. A duct flange part connected to the exterior duct 40 is provided on an upper surface of the cover element 27. <P>COPYRIGHT: (C)2010,JPO&amp;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.

  Air conditioning indoor units of refrigeration cycle equipment installed in air-conditioned rooms for cooling and heating must be kept clean in terms of hygiene, depending on the installation conditions in the air-conditioned rooms. It may be desirable to periodically clean the 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 Document 1 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. The top plate is fixed to the upper ends of the left and right side plates with screws or the like. Further, a duct flange portion as described in Patent Document 1 and Patent Document 2 is provided on the top surface of the top plate, and an external duct is connected to the duct flange portion.

  When performing maintenance and cleaning of the blower fan and the like in the air conditioning indoor unit described in Patent Document 1, the top plate integrated with the blower fan and the like is pulled out to the front of the main body casing. In this case, the fixing screw is removed and the top plate is pulled out forward. Thereafter, the fan casing is opened, and maintenance and cleaning of the blower fan and the like in the casing are performed.

JP 2006-10177 A JP 2003-185241 A

By the way, the indoor unit for air conditioning of the said literature 1 pulls out a top plate ahead in the case of a maintenance. In that case, a relatively heavy motor or blower fan is installed on the top plate, so it is originally heavy, but if the duct is still connected to the top plate, the weight and rigidity of the duct will be added and it will move further. It became difficult, and a great deal of labor and attention was required to pull out and restore the top board. Further, if the top plate is moved while it is connected to the duct, the top plate or the duct is bent, and in the worst case, the top plate or the duct may be plastically deformed and may not return to the original shape.
On the other hand, to remove the duct from the flange by loosening the fixing screw to make it easier to move the top plate, it is necessary to remove the screw, align the flange and the duct at the time of restoration, and tighten the screw. It takes a lot of work. Also, when removing and restoring the duct, dust attached to the duct surface may be shaken off and contaminate the surroundings. There is also a problem that it does not conform to the use conditions as an air conditioning indoor unit.

  The present invention has been made to solve the above-described problems. The top plate can be easily moved to the front of the main body casing without removing the connected ducts, and the blower fan and its drive unit. The purpose is to provide an indoor unit for air conditioning that can be easily maintained and cleaned.

Air conditioning indoor unit according to the present invention, deployment and left and right side plates, a top plate outlet opening is formed for blowing air, a back plate, a main body casing comprising a front plate, on the main body casing an indoor heat exchanger that is, fixed to the lower surface of the top plate, a blower fan which blows air from the indoor heat exchanger blows air to the blowing opening, a driving unit for rotationally driving the blower fan A fan case fixed to the lower surface of the top plate and enclosing the blower fan and the drive unit, and a cover body that covers the top of the main body casing and covers the top of the top plate and has a front opening. wherein the top plate is supported by a back and forth out freely the main body casing from the front opening of the integrally said cover member and said fan case and the blower fan and the driving portion, an upper surface of the cover body To the outside In which the duct flange portion which is connected to the duct is provided.

  In the indoor unit for air conditioning according to the present invention, a duct flange portion is provided on a cover body that is independent from the top plate, an external duct is connected to the flange portion for the duct, and the top plate is opened on the front surface of the cover body. Since the front and rear can be freely inserted and removed from the portion, the top plate can be pulled forward from the front opening of the cover body without any trouble when performing maintenance of the blower fan or the drive portion. In this case, since the top plate is not connected to the external duct, the top plate is pulled forward without the movement of the top plate being restricted and the weight of the duct being applied. Therefore, it is not necessary to remove the duct from the air conditioning indoor unit prior to the front drawer of the top plate, and the top plate can be easily moved to the front of the main body casing with a light force, such as maintenance of the blower fan and its drive unit, etc. The effect is that you can easily.

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 free and independent configuration with respect to 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 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.

A set of support legs 18, 18 are vertically suspended from the lower surface of the top plate 4 so as to be separated 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 right side position of the indoor heat exchanger 9 is a space 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 rises at the boundary between the flat plate portion 4B, the front flange portion 4C extending forward from the flat plate portion 4B, and the flat plate portion 4B and the front flange portion 4C. It consists of a plate part 4D and a rear side part 4E standing up at the rear edge of the flat plate part 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.

And, as shown in FIG. 5, rectangular pillar-shaped receiving members 37, 37 that are long in the front-rear direction are fixed to the upper portions of the inner surfaces 2a, 3a 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 long in the front-rear direction. The rail-shaped member 31 is formed by bending a sheet metal material so that the front section has a mountain shape. 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.

Above the top plate 4, a rectangular cover body 27 in a plan view is provided so as to cover the entire upper surface opening of the main body casing 8. The cover body 27 has a blowout opening 29 formed at a position facing the blowout openings 4 </ b> A and 4 </ b> A of the top plate 4. At the periphery of the blowout opening 29, a duct flange portion 28 used for connection with the external duct 40 is erected over the entire circumference.
As shown in FIG. 6A, the cover body 27 has leg portions 27A and 27A provided vertically at both left and right ends. When these leg portions 27A and 27A are placed on the left and right receiving members 37 and 37 and attached with screws or the like, the cover body 27 is fixed to the side plates 2 and 3 as shown in FIG. . At this time, a front opening 36 is formed between the front plate 6 of the main body casing 8 and the front of the cover body 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.

On the other hand, as shown in FIG. 7, the rear side 4E of the top plate 4 is provided upright as a horizontal plate extending in the left-right direction. The rear side portion 4E of the top plate 4 is formed so as to be in an airtight state and in contact with the back side inner surface 28A of the duct flange portion 28 of the cover body 27. An elastic sealing member 39 made of, for example, foamed polyethylene is attached to the front surface of the front side portion 27B of the cover body 27 and facing the horizontal plate portion 4D of the top plate 4 with an adhesive material or the like. Yes. Further, the top plate 4 inserted into the front opening 36 is located at a predetermined position in the cover body 27 (that is, when the rear side portion 4E of the top plate 4 contacts the back side inner surface 28A of the duct flange portion 28). The horizontal plate portion 4D of the top plate 4 is in contact with the elastic seal member 39 of the cover body 27, and the rear side portion 4E of the top plate 4 is in contact with the back side inner surface 28A of the cover body 27. It has become. At this time, the horizontal plate portion 4D of the top plate 4 elastically presses the cover body 27 in the backward direction (arrow (-F) direction shown in the circle G in FIG. 7A) via the elastic seal member 39. doing.

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 side plates 2 and 3, as shown in FIGS. 3 and 8A, the front portion of the top plate 4 is held forward by the hand (arrow F). When pulled in the direction), the top plate 4 smoothly slides on the top 32A of the rail-shaped member 31 (see FIG. 7B) and moves forward. In this case, since the top plate 4 is not connected to the external duct 40 but has a free and independent configuration with respect to the external duct 40, the top plate 4 is freely drawn forward without being restrained. On the other hand, it is not necessary to remove the external duct 40 from the air conditioning indoor unit 1 prior to the front drawer 4 being pulled out. And since the lower surface of the top plate 4 is supported by the top part 32A of the rail-shaped member 31 in a line contact state, the sliding frictional force is relatively small and the force is concentrated too much on the contact position as in the point contact state. The contact part is not deformed.

Therefore, as shown in FIG. 8B, the fan casing 12 and the drive unit 11 that have come out in front of the main body casing 8 are observed by the operator from below, from the left and right sides, or from the back. A hand is inserted for maintenance and cleaning. In addition, the cushioning material 39 for sealing the cover body 27 and other checks and repairs are confirmed and repaired.

After the maintenance as described above is completed, when the top plate 4 is pushed backward by hand (in the direction of the arrow (-F) in the enlarged circle G in FIG. 7A), the top plate 4 can be easily opened by the front opening 36. Stored in the main casing 8. When the top plate 4 reaches a predetermined position in the cover body 27, the space between the horizontal plate portion 4D of the top plate 4 and the elastic seal member 39 of the cover body 27, the back side inner surface 28A of the cover body 27, and the top The space between the rear side 4E of the plate 4 is hermetically sealed.
On the other hand, since the left and right lower surfaces of the top plate 4 are supported in line contact with the top portions 32A and 32A of the rail-like members 31 and 31 as described above, originally the left and right side plates 2 and 3 and the top plate 4 The space is sealed almost airtight.
By the airtight state of these portions, the portion surrounded by the top plate 4 and the cover body 27 except the blowout openings 4A and 4A of the top plate 4 and the blowout opening 29 of the cover body 27 is surely sealed. It is.

  As described above, in the indoor unit for air conditioning 1 of this embodiment, the external duct 40 is connected to the duct flange portion 28 of the cover body 27 that is a separate and independent configuration from the top plate 4. Therefore, the external duct 49 does not have to be removed from the cover body 27 when the top plate 4 is pulled out from the main body casing 8 during maintenance and cleaning of the blower fan 10 and the drive unit 11. This eliminates the need to remove the duct and restore the duct, thereby reducing the labor and cost required for the duct and maintaining and cleaning the blower fan 10 and the drive unit 11 easily and quickly. it can. In addition, the air conditioner indoor unit 1 is required to have a sanitary environment because dust adhering to the duct surface is not shaken off and dirty around the duct as in the case of duct removal and restoration work. For example, it is preferably installed in a food factory. Since the top plate 4 is slidably mounted on the left and right top plate support members 30, 30, the top plate 4 can be easily pulled out and returned from the main body casing 8.

  When the top plate 4 is stored in a predetermined position in the cover body 27 while the top plate 4 independent of the cover body 27 is taken in and out of the main body casing 8, the horizontal plate portion of the top plate 4. 4D and the elastic seal member 39 of the cover body 27 and between the back side inner surface 28A of the cover body 27 and the rear side portion 4E of the top plate 4 are sealed in an airtight manner. Since the space between the side plates 2 and 3 and the top plate 4 is originally sealed in an almost airtight manner, the space surrounded by the top plate 4 and the cover body 27 is sealed. As a result, the air flowing into the space from the blowing openings 4A and 4A of the top plate 4 can be discharged from the blowing opening 29 of the cover body 27 to the external duct 40 without leaking outside the cover.

In the above embodiment, when the top plate 4 is stored at a predetermined position in the cover body 27, the rear side portion 4E of the top plate 4 and the back side inner surface 28A of the cover body 27 are in contact with each other. However, the present invention is not limited to this. For example, when the top plate 4 is stored at a predetermined position in the cover body 27, the back surface 5A of the back plate 5 and the rear side portion 4F (see FIG. 7A) of the top plate 4 are in contact with each other. It is also possible to adopt a configuration in which the gap is hermetically sealed.
In the above example, the top plate is supported on the left and right rail-like members in a line contact state, and the space between them is sealed in an almost airtight manner. Even if they are supported in a surface contact state, it is possible to seal between them in an almost airtight manner.
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. May be.
The term “external” used as an external duct in the present invention means a configuration other than the air conditioning indoor unit of the present invention.

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). The aspect which attaches a cover body to the main body casing of the said indoor unit for an 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. (A) is DD sectional view taken on the line in FIG. 3, (b) is CC sectional view taken on the line in FIG. 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, 3 side plate, 4 top plate, 4A blowout opening, 4B flat plate part, 4C front wing part, 4D horizontal plate part, 4E rear side part, 4L left end part, 4R right end part, back Plate, 5A rear surface, 6 front plate, 7 bottom plate, 8 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 Electrical box, 27 Cover body, 27A Leg part, 27B Front side part, 28 Duct flange part, 28A Back side inner surface, 29 Blowing opening, 30 Top plate support member, 31 Rail-like member, 32A Top, 33 Vertical surface, 34 Escape member, 36 Front opening, 37 Receiving member, 38 Motor, 39 Cushion material, 40 External duct, -F arrow.

Claims (2)

A main body casing comprising left and right side plates, a top plate in which an opening for blowing air is formed , a back plate, and a front plate ;
An indoor heat exchanger that is deployed in the body casing,
A blower fan fixed to the lower surface of the top plate, for blowing air from the indoor heat exchanger and blowing air to the blowout opening ;
A drive unit for rotationally driving the blower fan ;
A fan case fixed to the lower surface of the top plate and enclosing the blower fan and the drive unit;
A cover body covering the top of the top plate and having a front opening at the upper end of the main body casing;
With
The top plate is supported by the main body casing so that the blower fan, the drive unit, and the fan case can be integrated into and removed from the front opening of the cover body .
An air conditioning indoor unit characterized in that a duct flange portion connected to an external duct is provided on the upper surface of the cover body.   Rail-like members are installed on the upper parts of the left and right side plates with their longitudinal directions in the longitudinal direction, and the top plate is supported on the rail-like members so that they can be inserted and removed freely. The rear side of the top plate is a duct of the cover body. It is formed so as to be in airtight contact with the back side inner surface of the flange portion or the back surface of the back plate, and a horizontal plate portion extending in the left-right direction is erected on the front portion of the top plate. An elastic seal member facing the horizontal plate portion of the top plate is attached to the front surface, and when the top plate is stored at a predetermined position in the cover body, the horizontal plate portion of the top plate and the cover body It is configured to be hermetically sealed between the elastic seal member and between the back side inner surface of the cover body or the back surface of the back plate and the rear side of the top plate. The indoor unit for air conditioning of Claim 1.

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