ES2251193T3 - AIR CONDITIONING UNIT INTENDED TO BE PLACED INSIDE. - Google Patents

Abstract

An indoor unit of an air conditioner, comprising: a front air inlet (4) formed on a front surface of a housing (1) of the indoor unit; an upper air inlet (6) formed on an upper surface of the housing (1); a heat exchanger (11) provided in a ventilation passage from both the front air inlet (4) and also from the upper air inlet (6) to an air outlet (10); and an air distribution fan (12) provided in the ventilation passage; characterized by an upper grid panel (7) detachably fixed to the upper surface of the housing (1) to cover the upper air inlet (6), in which the upper grid panel (7) is fixed or is released from the housing (1) by sliding the upper grid panel (7) along a direction generally forward and backward of the housing (1).

Description

Air conditioning unit intended to be placed inside.

Technical field

The present invention relates to a unit interior of an air conditioner provided with air inlets on the front and on the top of the case.

Prior art

An indoor unit mounted on the wall of an air conditioner of the separate type is usually constituted in such a way that an interior air inlet is provided in the front part of a housing and an air outlet is provided underneath it. In addition, for example, Japanese Patent Publication No. 9-14684 describes an indoor unit, such that an inverted V-shaped heat exchanger is provided in the housing and, together with this, an air inlet is provided. interior also at the top of the
Case.

An example of constitution of such units of entry will be explained with reference to figure 2, which is a illustration of the present invention. A housing 1, which has a generally rectangular shape in the cross section is constituted by a base frame 2 fixed along a interior wall surface on a rear side (left side in figure 2) and a grid 3 mounted on a front side of this base frame 2. A V-shaped heat exchanger 11 inverted and an air distribution fan 12 are arranged in this housing 1. In addition, a front air inlet 4 and an upper air inlet 6 are formed in the part front and top of the front grill 3, respectively. A front panel 5 provided with a portion of front grille 5a to cover the front air inlet 4 is attached to this front grill 3. A filter 8 for protection against the dust is fixed along the front air inlet 4 and to the upper air inlet 6.

In an indoor unit, which has the constitution above, indoor air is sucked from the air inlet front 4 and the upper air inlet 6 in the housing 1. The air is heated or refrigerated to a predetermined temperature when it passes through a heat exchanger 11 to become air conditioning and then it is blown out from an air outlet 10 inside a room.

When this operation is repeated, it occurs gradually a blockage in the protection filter against the powder 8. In addition, the front panel 5 is gradually contaminated due to the dust that adheres there is in the air that passes through of the panel.

Therefore, conventionally, for example, a front panel 53 can be opened by pulling a lower end of the front panel 53 towards the front, as shown in Figure 13. The dust protection filter 55 can be pulled out. and retired in this state. In addition, the front panel 53 can also be removed from a front grill 52 of the housing 51 by pulling the entire panel in an inclined state, as shown in the figure. Therefore, these dust protection filters 55 and the front panel 53 can be removed from the housing 51 to be washed with water or
milar

However, a conventional indoor unit of an air conditioner has the problem that a huge workforce to clean the periphery of the air inlet upper 34 shown in figure 13. That is, the input of upper air 54, which is provided with a grid portion upper 52a, as shown in figure 1, is contaminated as in the case of the front panel 53, since the air dust that passes through the upper grid portion 52a adheres to the same. Therefore, this upper grid portion 52a has to be cleaned when required. However, it is necessary to climb, for example, to a chair to clean the upper rack portion 52a, since such an indoor unit is usually installed in the roof proximity. Since it is still difficult to see the portion of upper grid 52a even in this case, cannot be removed easily contaminants accumulated on the upper portion of grid 52a for cleaning performed in this circumstance. By Therefore, cleaning requires a long time and labor huge.

JP 09 229 404 A describes a unit interior according to the preamble of claim 1.

Description of the invention

The present invention has been realized in Consideration of the problems described above. Agree thereby, an object of the invention is to provide a unit inside an air conditioner, in which the periphery of the upper air inlet of the housing can also be cleaned easily.

In order to perform the above object, the present invention provides an indoor unit of a air conditioner, which comprises the characteristics of the claim 1.

According to this constitution, the entry of upper air is provided with an upper grid panel separated from the housing, so that the upper grid panel can be removed to clean the periphery of the air inlet superior in a secure posture. Sites or degrees of contamination can be verified and can properly include cleaning with Water. Therefore, cleaning can be done more easily in A shorter time.

In the present invention, the upper grid panel is fixed or released from the housing by sliding the upper grid panel along a direction generally forward and backward of the car.
House.

According to this constitution, the bread of upper rack is fixed or released by sliding this panel to along the direction generally forward and backward of the Case. Therefore, a space of work above the indoor unit to fix or release the panel. Therefore, the indoor unit can be installed in the proximity of the inner ceiling. That is, you can ensure the freedom on installation sites.

In an embodiment of the invention, the front panel to cover the front air inlet is fixed removable to the housing and a locked portion for Front panel coupling is provided on the panel top rack to prevent the rack panel from moving upper fixed.

In this constitution, the grid panel upper is maintained while stationary at the entrance of upper housing air, as long as the front panel is not remove from the housing, since the upper grid panel is provided with a locked portion coupled with the front panel. Therefore, even when a hand is placed on the panel top rack, for example, at the time of carrying or install the indoor unit or similar, the panel is not removed accidentally and in this way security is guaranteed.

In an embodiment of the present invention, a crank that projects in the front direction It is provided on the leading edge of the upper grid panel as the blocked portion and is formed so that a panel edge front overlap the crank from above on the lock.

According to this constitution, a crank, which also works as the blocked portion mentioned It is previously provided on a leading edge of the panel upper rack Since the edge of the front panel overlaps this crank from above in the lock, the crank is hidden under the front panel and in this way the appearance is improved, In addition to ensuring the security described above.

In an embodiment of the present invention, a dust protection filter is arranged in a generally vertical state along the air inlet front on one side of the front surface of the unit interior, in a generally horizontal state along the upper air inlet on one side of the upper surface of the same and in a folded state between the front air inlet and the upper air inlet and, when this protection filter of the powder is fixed while being pressed up from below to along the front air inlet, the crank is placed by above an area where the air protection filter is in the folded state between the front air inlet and the inlet of upper air, so that an upper end of the filter dust protection is guided backwards along a lower surface of the crank.

According to this constitution, even when the dust protection filter is fixed while bending backward on the upper front side, it can be performed easily fixing, since the movement of the end Top of the dust protection filter in the bent area is guided by the crank. Since it is not required separately No member used exclusively for such guidance, all Constitution can be simple.

In an embodiment of the present invention, a plurality of grid panels are provided upper on the upper surface of the housing parallel to the along one direction the width of the housing and these panels Top rack are configured in the same way.

In accordance with this constitution, since a plurality of upper grid panels, provided in parallel to along the width direction of the housing are configured in the same way, they can be fixed interchangeably between the right and left sides when the user disassembles a once the panel and fix it again. Therefore, it can be done more easily fixing. In addition, the cost of manufacturing, since, for example, the same mold is used injection molding when grid panels are manufactured higher.

Brief description of the drawings

Figures 1A-1E show a method of disassembling an upper grid panel in an indoor unit of an air conditioner according to an embodiment of the invention.
tion.

Figure 1A is a longitudinal section of an essential part showing a state, in which the upper grid panel is fixed to the front grid.
tera.

Figure 1B is a longitudinal section of the essential part that shows a state, in which the front panel It is disassembled.

Figure 1C is a longitudinal section of the essential part when the upper grid panel slides slightly forward.

Figure 1D is an enlarged view showing the portion D in Figure 1C.

Figure 1E is a longitudinal section of the essential part when the upper grid panel slides additionally forward.

Figure 2 is a longitudinal section that It shows the construction of the indoor unit.

Figure 3 is a plan view showing the indoor unit

Figure 4 is a perspective view that Show top grid panel.

Figures 5A - 5E show the construction of An essential part of the upper grid panel.

Figure 5A is a plan view showing the upper grid panel on an extreme left side.

Figure 5B is a side view of the panel of upper rack

Figure 5C is a plan view thereof, Seen from below.

Figure 5D is a cross section to along an A-A line in Figure 5C.

Figure 5E is an enlarged view of a portion B in Figure 5B.

Figures 6A and 6B show a left end of the front grille in the indoor unit.

Figure 6A is a plan view of the same.

Figure 6B is a front view of a part top of it.

Figure 7 is a cross section along of a C-C line in Figure 6B.

Figure 8 is a longitudinal section of the essential part of the front grille that shows a state when a dust protection filter is attached to the indoor unit.

Figures 9A - 9E show the constitution of an essential part of the front grille in an indoor unit of an air conditioner according to another embodiment of the invention.

Figure 9A is a plan view of its end left.

Figure 9B is a cross section to along an E-E line in figure 9.

Figure 9C is a cross section to along an F-F line in Figure 9A.

Figure 9D is a cross section to along a G-G line in figure 9A.

Figure 9E is a cross section to along an H-H line in Figure 9A.

Figures 10A and 10B show a procedure of disassembly of the upper grid panel from the indoor unit shown in figure 9.

Figure 10A is a longitudinal section of a essential part when a crank of the upper grid panel is slide up slightly.

Figure 10B is a longitudinal section of a essential part when the upper grid panel slides towards forward from the previous position.

Figures 11A - 11C show the constitution of an essential part of an indoor unit of a conditioner air according to another embodiment of the invention.

Figure 11A is a plan view of the end left.

Figure 11B is a cross section to along the line I-I in figure 11A.

Figure 11C is a cross section to along the J-J line in figure 11A.

Figures 12A and 12B show a procedure of disassembly of the upper grid panel from the inner joints shown in figure 11.

Figure 12A is a longitudinal section of an essential part when the leading edge of the upper grid panel slides slightly towards
above.

Figure 12B is a longitudinal section of a essential part when pushing the upper grid panel towards out diagonally forward from the previous position; Y

Figure 13 is a perspective view of a indoor unit of an air conditioner.

Best embodiment of the invention

Embodiment one

A form of embodiment of the present invention with reference to drawings.

Figure 2 shows an indoor unit of a separate type air conditioner according to this form of realization. This indoor unit has a housing 1 that has a generally rectangular shape in the cross section. This housing 1 is constituted by a base frame 2 fixed to the along an interior wall surface on the back side (left side in figure 2) and a front grill 3 fixed to a front part of the base frame 2.

A front panel 5 provided with a portion of front grill 5a is also fixed to the front grill 3, so that its front opening (front air inlet) 4 It is covered. An upper air inlet 6 is formed in the upper part of the front grille 3. The air inlet upper 6 is provided with a top 7 grid panel for Cover this entry, as described below. In addition, a dust protection filter 8 is fixed along the front air inlet 4 and along the air inlet upper 6.

On the other hand, an air outlet 10 provided with a horizontal hatch 9 or a vertical hatch (no sample) is formed on a lower front part of the housing 1. In housing 1, a heat exchanger 11 and a air distribution fan 12, consisting of a fan of transverse flow, are arranged successively in a step of ventilation from the front air inlet 4 and the inlet of upper air 6 to air outlet 10. The heat exchanger heat 11 functions as a condenser (at the time of heating) or as an evaporator (at the time of cooling) in a refrigerant circuit.

The heat exchanger 11 is constituted in such a way that a heat exchanger on the front side 11a and a heat exchanger on the rear side 11b are combined in an inverted V-shape. The above-mentioned air distribution fan 12 is positioned between respective lower end portions of the heat exchanger on the front side 11a and the heat exchanger on the rear side 11b. A surface of the base frame 2 from behind the air distribution fan 12 to the air outlet 10 is formed as an arcuate portion 2b in a slightly curved shape. A drain pan 13 is provided at the lower end of the heat exchanger on the front side 11a, in order to receive drain water generated on the heat exchanger on the front side 11a. In addition, a drain pan 14 on the rear side is provided at the lower end of this heat exchanger 11b, to receive drain water generated in the heat exchanger on the side
rear 11b.

In the indoor unit that has the construction described above, when the fan is operated air distribution 12, the indoor air is aspirated from the front AITE inlet 4 and upper air inlet 6 through from dust protection filter 8 to the inside of the housing 1. The indoor air sucked through the air inlet front 4 passes through the side heat exchanger 11th forward At this moment, the air is heated or cooled up to a predetermined temperature and turns into air conditioned. The indoor air sucked through the inlet of upper air 6 passes through an upper portion of the heat exchanger on the front side 11a and the exchanger of heat from the rear side 11b, which are placed below this entry. At this moment, as in the previous case, the air is heated or refrigerated and becomes air conditioning. This air conditioning is blown out from the air outlet 10 inside the room by the air distribution fan 12. The continuation of this operation causes the indoor temperature to Approximate the set temperature and maintain the temperature.

It should be noted that the capacity of the heat exchanger 11 in this case is, for example, generally equal to that of the heat exchanger in one way obtained by extending the heat exchanger on the front side 11a along its upper end in the same length as the rear side heat exchanger 11b. Therefore, the dimensions of this indoor unit in the height direction are they can perform smaller without reducing the exchange capacity of heat

When the operation described above is repeated, the obstruction in the dust protection filter 8 for dust collection in the intake air gradually occurs. This front panel 5 is also gradually contaminated, since the dust in the air passing through the front panel 5 adheres to the panel. As in the case of the conventional example described with reference to Figure 13, the front panel 5 in the indoor unit rotates around the upper end of the front panel 5 by pulling its lower end to the front side and thus the front panel 5 is inclines, for example, 45 degrees and can be opened from the
Home 1.

Therefore, dust protection filter 8 It can be stretched down and can be removed from the housing 1 in a state in which the front panel 5 is open. The panel front 5 can also be removed from the housing by pulling the entire front panel 5 forward in an inclined state. By therefore, dust protection filter 8 and front panel 5 can be removed from housing 1 to be washed with water or Similary.

In this embodiment, additionally, the upper grid panel 7 mentioned above can be also remove from the housing 1. The constitution of the panel top rack 7 and front rack 3, to which this panel is fixed, will be described in detail below. How I know shown in figure 3, a central support portion 3a similar to a beam, which extends from the rear side to the side front, is provided in the approximately central portion of the upper surface of the front grill 3 in the direction of the width of the indoor unit. The upper grid panels 7, 7 are fixed on both sides of this support portion center 3a for insertion of the central support portion 3a. These panels 7, 7 have an approximately equal shape to each other. Market Stall that its fixing structures to the front grill 3 are also the same, the panel will explain in an example upper grid 7 on the left side in the figure.

The upper grid panel 7 is composed of a synthetic resin, such as, for example, polypropylene or Similary. As shown in Figure 4, a plurality of pieces of crossbar 22 and vertical parts 23 are provided in a grid inside an outer frame in a generally rectangular. The front part of the panel is folded so that the front side down forwards (right side lower in n figure 4). Each portion will be described below. linear of the outer frame 21 along four sides of the rectangle. In Figure 4, a linear portion on the side Lower left is referred to as a left frame 21a. A linear portion in parallel with it on the upper right side It is referred to as a right frame 21b. A linear portion between these left and right frames 21a, 21b on the side Front is referred to as a front frame 21c. A portion linear on the rear side is referred to as a rear frame 21d

Rear projections 24, 24 projected backwards they are formed on two sides on the lower side of the rear frame 21d along the width direction of the top grid panel 7. A crank 25 projected toward front from the bottom side of the front frame 21c, is provided approximately over the entire length of the front frame 21c. A reduced portion 25a is provided in the approximately central portion of the crank 25 in the direction of the width, and can be grabbed with the tip of a finger when the upper grid panel 7 is stretched from the housing 1 described later.

On the other hand, a portion 26 widened towards outside is provided on the bottom of the left frame 21a along approximately its entire length, as shown in Figure 5. The enlarged portion 26 is projected outward in the width direction from the side surface of the frame left 21a. This portion 26 widened out is provided with a hook-shaped portion 26a having a surface vertical generally on the same plane as the left frame 21a at a front end, as shown in Figure 5B. The rear part of this hook-shaped portion 26a is formed of such that its lower surface is in the same plane as the left frame 21a.

In addition, a portion 27 widened inwards projected inwards in the width direction (upwards in figure 5A) it is provided over the entire length of the left frame 21a on the bottom of the frame left 21a, as shown in Figure 5A. The surface lower portion 27 widened inward is formed also on the same plane as the bottom surface of the frame left 21a. Therefore, the bottom of the frame left 21a is formed wider than its upper part, put that portion 26 widened out and portion 27 widened inwards are provided on both as shown in the figure 5C.

As shown in Figure 5D, a projection outer guide 26b is formed on the rear of the portion 26 widened out, and extends in the direction forward and backward along the outer end of the lower surface of portion 26 widened out. Further, an inner guide projection 27a extending over the entire length along the inner end of the bottom surface of the inwardly enlarged portion 27 is formed in a shape that is projected down.

On the other hand, a reduced portion of coupling 28 is provided on lower surfaces respective portion 26 widened out and the frame left 21a in position B shown in figure 5B, that is, in the position slightly more advanced than the central position in the direction forward and backward, as shown in the Figure 5C, this lowered coupling portion 28 is configured in a recessed way upward from the bottom surface, as shown in figure 5E.

Portion 26 widened out and portion 27 widened inwards provided on both sides of the left frame 21a, as described above, are provided along the right frame 21b in addition to the panel upper rack 7 mentioned above, shown in figure 4 symmetrically around the center of the upper grid panel 7.

Figures 6A and 6B show the constitution on the upper surface side of the front grill 3 to which the upper grid panel 7 is attached. The front grill 3 is provided with an upper panel 31 constituting the outer wall of the upper surface of the indoor unit, as shown in Figure 6A. In this upper panel 31, the upper air inlet 6 is formed in a cut shape from a leading edge. The upper grid panel 7 is fixed to a front grid 3, so that the upper surface is on the same plane as the upper panel 31 and that the outer periphery of the outer frame 21 is almost coupled to the inner periphery of the inlet of upper air 6 as shown with an alternate long and short dashed line in Figure 6A. In the following description, the left portion of the upper air inlet 6 in the upper panel will be referred to as an upper side panel.
per 31st.

An inner wall panel 33 is provided, in addition, under the upper panel 31. In the interior wall panel 33, an inner opening 32 is formed to correspond to the shape of the inner periphery of the outer frame 21 of the panel upper rack 7. The left area of the inner opening 32 in the inner entrance panel 33 is formed as a portion of lateral margin support 34 in a way that extends generally in parallel with the upper side panel 31a.

On the upper surface of the portion of lateral margin support 34, a projection 35 is formed projected upward in a way that extends in the direction front and rear in a slightly left position from the portion directly below the inside edge of the panel upper side 31a as shown in Figure 6B.

The upper grid panel 7 is fixed to the front grille 3 in a stadium in which the left frame 21a of the upper grid panel 7 is placed in this projection 35. At this time, the outer guide projection 26b and the projection of inner guide 27a of portion 26 widened towards was described above and the portion 27 widened inwards on both sides of the left frame 21a are placed on both sides of the projection 35. Consequently, the movement upper grid panel slide 7 is guided in the front and rear direction as described below when the upper grid panel 7 is pushed out or is inserted from the front side.

The outwardly enlarged portion 26 is placed under the upper side panel 31a as shown in Figure 6A in a state in which the upper grid panel 7 is fixed to the front grill 3, as described above. Therefore, the upward movement of the upper grid panel 7 is limited. The rear projection 24 mentioned above is provided in the rear frame 21d of the upper grid panel 7. A coupling hole 36 is formed in a vertical wall 3b on the rear side of the front grid 3 (see Figure 6B) to connect the upper panel 31 and inner wall panel 33 with each other. The rear projection 24 is coupled in the coupling hole 36 from the front and, therefore, also the upward movement of the upper grid panel 7 is
limited.

Moreover, a blocking projection 35a it is formed on the upper surface of the projection 35 as shown in figure 7. When the top grid panel 7 is fixed to the front grill 3, the locking projection 35a it engages within the recessed coupling portion 28 on the lower surface of the left frame 21a, resulting in a state locked in which the position of the upper grid panel 7 in The front and rear direction is limited.

The front panel 5 is shown with a long and short dashed line alternating in Figure 7. A rod 37 is integrally provided on the upper and lower end of the front panel 5. A recessed support portion (not shown), in the that the rod 37 is coupled, it is provided on the end side of the front grill 3 (rear side of the drawing) to support the front panel 5. As described above, the front panel 5 can be opened by rotating the panel around the stem 37, as shown with an arrow in figure 7. In addition, the front panel 5 can be removed from the front grill 3 by pulling the front panel 5 forward (to the right in figure 7) in a state in which the panel is open approximately
45 degrees.

The procedure will be described below. for dismantling the upper grid panel 7 which has the constitution indicated above outside the front grille 3. The two-layer structure of the upper side panel 31a and the side edge support portion 34 at the left end of the front grille 3 is also provided along the edge left side of the central support portion 3a shown in the Figure 3 in a bilateral symmetry to support the right frame 21b of the upper grid panel 7. The same structure is provided on the right side edges of the portion of central support 3a and on the right end of the grid front 3 interposing the upper grid panel 7 in the width direction to support this panel on the side right in figure 3. Therefore, when the panel is removed from upper grid 7 on the left side in figure 3, the next operation on the left frame 21a occurs at same time on the right frame 21b. In addition, the panel top rack 7 on the right side can be removed with the same procedure

Figure 1A shows a cross section on the left frame 21a in a state in which the upper grid panel 7 is fixed to the front grid 3. At this time, the crank 25 on the upper grid panel 7 is pressed from above. by the upper edge of the front panel 5. Therefore, by acting in this manner, the upward and forward movement of the upper grid panel 7 is prevented, so that the panel is stationary and retained at the upper entrance 6 in the front grille
tera 3.

When the upper grid panel 7 is disassembled from this state, the front panel 5 is removed from the front grill 3, as described above, as shown in figure 1B. Therefore, the crank 25 of the upper grid panel 7 is exposed on the side Forward. Then, the upper grid panel 7 slides towards the front along the upper surface of the projection by coupling the fingertip with the reduced portion 25a from crank 25 to triad forward.

At this time, as the recessed coupling portion 28 moves forward from the state in which the blocking projection 35a of the projection 35 is engaged in the recessed coupling portion 28 on the upper grid panel 7, the Upper grid panel 7 made of a synthetic resin is pressed upwardly by the locking projection 35a and is slightly deformed elastically. Accordingly, the surface behind the recessed coupling portion 28 adheres to the blocking projection 35a, as shown in Figures 1C and 1D and, therefore, the locked state is released, in which the blocking projection 35a is coupled in the recessed portion of the coupling
I lie 28.

After this, the upper grid panel 7 moves forward, as shown in figure 1E continuing sliding operation of upper grid panel 7 towards front and top grid panel 7 is removed from the rack front 3.

After the upper grid panel 7 removed as described above has been washed, by example, with water or the like together with the front panel 5, the panel it is fixed again by performing the reverse procedure to the previous one. That is, the upper grid panel 7 is fixed by placing the rear frame 21d on respective front ends of the projection 35 on the upper surface of the support portion of the lateral edge 34 and the projection (not shown) provided for similar way on the central support portion 3a and pressing the panel towards the rear from this state. During this operating process, for example, portion 26 widened out of the left frame 21a in the upper grid panel 7 is shifted back between the upper side panel 31a and the side edge support portion 34, as shown in the Figure 1E Then, as shown in Figure 1A, the operation pressure is continued until the rear end of the panel upper grid 7 contacts the vertical wall 3b of the front grille 3 and then the panel fixation is completed top rack 7.

At this moment, the rear projection 24 provided on the rear frame 21d on the grid panel upper 7 is engaged in the coupling hole 36 formed in the vertical wall 3b. In addition, the blocking projection 35a on the projection 35 is engaged in the recessed coupling portion 28 in the upper grid panel 7 from the lower side and is retained in a locked state that prevents panel removal towards in front of.

Subsequently, the crank 25 of the panel upper grid 7 is pressed, as described above, by the front panel 5 from above fixing the front panel 5 on the front grill 3 with the reverse procedure to that described above, resulting in the mounted state in which the panel of upper grill 7 is stationary in the upper air inlet 6 on the front grill 3.

As described above, a filter of dust protection 8 is additionally fixed under the panel top grille 7. This dust protection filter 8 is formed in width dimensions generally equal to interior dimensions of the left frame 21a and the frame right 21b on the upper grid panel 7. To support the dust protection filter 8 from the inside, the grill front 3 is also provided with 3c support frames that they extend down on the front side in positions that correspond to the two lateral edges of the protection filter of the powder 8 in the width direction, as shown in the figure 6B.

After this protection filter dust 8 has been removed and cleaned, the protective filter is fixed of powder 8 by pressing the filter from the bottom side along of the support frames 3c described above. In this Instantly, the crank 25 of the upper grid panel 7 is placed in a diagonally inclined state in position upper portion, in which the support frame 3c is folded from the front side to the surface side top, as shown in figure 8. The dimension between the crank 25 and support frame 3c gradually narrows from the front side to the rest.

Therefore, during the pressure process on the dust protection filter 8 along the support frame 3c, the end portion of the dust protection filter 8 is brought into contact with the bottom surface of the crank 25 in the position of the folded portion of the support frame 3c and is guided towards the rear along this lower surface. Therefore, since the dust protection filter 8 is guided by the crank 25 of the upper grid panel 7, so that the direction of the dust protection filter 8 is changed to the rear in the portion position folded when fixed, the protective filter of the
powder 8.

Embodiment 2

Another embodiment of the invention will be described below with reference to the figures
9A-9E and figures 10A and 10B. It should be noted that the members having the same functions as those of the members described in the above embodiment 1 will be designated with the same reference numbers and their detailed description will be omitted.

Figures 9A - 9E show the constitution of the left end of the indoor unit in this form of realization. In this embodiment, the grid panel upper 7 shown in figure 9A is constituted as shown in Figure 9B, such that a plurality of pieces of crossbars 22 and vertical pieces 23 are provided in a grid, as in the case of embodiment 1. The Constitutions of the left frame 21a of an external frame 21 surrounding them and the right frame 21b (not shown) are different from those shown in the embodiment 1. The left frame 21a will be exemplified as above for Explanation. In this left frame 21a, a widened portion upper 41, which extends outward from the extreme side upper in the width direction (down in figure 9C) It is provided as shown in Figure 9C. A portion of connection 42, which extends outward, as in the previous case, It is provided below.

The widened portion up 41 is formed over the entire length of the upper end side of the left frame 21a as shown in figure 9D. Serving of connection 42 is formed in a local area in a middle position in the front and rear direction on the lower end side of the left frame 21a. A limit portion of position 43 in a generally trapezoidal shape with a longer upper side and a shorter bottom side is interlocked in front of the side left end (near side of the drawing) in this portion of connection 42 as shown in figure 9E.

On the other hand, a middle lateral wall 44 extending forward is provided in the middle position of a vertical wall 3b in the front grid 3. An upper grid panel 7 is fixed in the front grid 3 in one state, in the that the boundary portion of position 43 is inserted and coupled between the end side of the middle side wall 44 and the support portion of the side edge 34 is below from the front. Therefore, the movement of the upper grid panel 7 in the top-down direction is limited by the constitution, in which the limit portion of the position is interposed vertically between the middle lateral wall 44 and the panel of the inte- grated wall
rior 33.

In addition, a blocking projection 44a, which is projects up, is formed at the end of the middle wall side 44. In addition, a coupling projection 41a, which is projects down, is provided on the lower surface of portion 41 widened up. Coupling projection 41a contacts the blocking projection 44a from the backside in a fixed state shown in the figure and of this way also prevents the forward movement of the top grid panel 7.

In this constitution, the grid panel upper 7 is disassembled by first removing the panel front (not shown) from the front grill 3, as in the case of embodiment 1 and then raising the crank 25 slightly up and pulling the panel towards the side lead. That is, as shown in Figure 10A, it causes elastic torsion deformation in the portion of connection 42, while the limit portion of position 43 is placed between the middle lateral wall 44 and the support portion of the side edge 34 through the crank lift 25 slightly up. Then, the left frame 21a and the widened portion up 41 move up integrally with the crank 25. Therefore, a state locked, in which the coupling projection 41a is placed in front of the blocking projection 44a, as shown in the Figure 10B, pulling the crank 25 towards the front in a state in which the coupling projection 41a is placed by above the blocking projection 44a. Then the grid panel upper 7 is stretched out and is disassembled from the rack front 3 as crank traction 25 continues towards the front. The upper grid panel 7 is fixed to the front grill 3 with the reverse procedure to that described previously.

Embodiment 3

Another embodiment of the invention will be described below with reference to the figures
11A - 11C and figures 12A and 12B.

In the upper grid panel 7 in the form of embodiment 1, the crank 25 placed under the front panel 5 and the widened portion out 26 placed under the panel upper side 31a are provided such that the grid front 3 can be disassembled by a sliding operation in the direction forward and backward. However, in the panel of upper grid 7 in this embodiment, it is not provided no crank 25 or widened portion upwards 26 described above, as shown in Figures 11A and 11B. For the therefore, the shape of the outer periphery of the grid panel upper 7 is generally configured in the same way as that of the upper air inlet 6, in such a way the panel can be raised upward even in a state in which the front panel 5 is fixed to the front grill 3.

However, a locking portion 45 similar to a pin, which projects downwards, is provided on the front end side on respective lower surfaces of the left frame 21a (and the right frame 21b mentioned above), as shown in the figure 11C, so that withdrawal is prevented upwards, unless it is removed on purpose. A locking hole 46, in which the locking portion 45 is inserted, is formed in the support portion of the side edge 34 of the front grille.
tera 3.

A slightly larger coupling portion 45a in the diameter than the inside diameter of the drill hole 46 it is provided at the end of the blocking portion 45. While not an external force is applied. Upward movement is prevented from the front end of the upper grid panel 7 by pressing the locking portion 45 inside the locking hole 46 so that the coupling portion 45a is placed under the bore of lock 46, as shown in the figure. In this fixed state, it also prevents movement in the forward and forward direction behind.

On the rear frame 21d of the grid panel upper 7, a rear projection 24 is also formed, which is It extends over its entire length, as shown in Figure 11A. It also prevents the upward movement of the rear end of the upper grid panel 1 fixing the panel in a state, in which the rear projection 24 is coupled in the recessed portion of coupling 47 formed in the vertical wall 3b of the grid front 3 from the front, as shown in the figure 11C.

The upper grid panel 7 having this constitution is first disassembled by gripping both ends in the direction of the width of the crossbar piece 22 on the front frame 21c and lifting them with the fingertips. Therefore, when a lifting force acts on the front end of the upper grid panel 7, the coupling portion 45a at the end of the blocking portion 45 moves upwardly over the blocking hole 46 the portion of lock 45 out of lock hole 46, as shown in Figure 12A. Consequently, a locked state of the upper grid panel 7 is released on the front end side. Then, the rear projection 24 is stretched out of the recessed coupling portion 47 on the front grill 3, as shown in Figure 12B by pulling out the upper grid panel 7 upwards diagonally to the front. A locked state is also released on the rear end side and, therefore, the upper grid panel 7 is removed from the front grill 3. The front grid panel 7 is fixed to the front grill 3 with the reverse procedure to the
previous.

As described above, in each form of embodiment, the upper grid panel 7 covering the entrance of upper air 6 formed in the front grille 3 in the housing 1 It is provided separately from the front grille 3 and the panel top rack 7 is detachably attached to the rack front 3. Therefore, when cleaning the grid panel top 7, cleaning can be done by removing this panel from the front grill 3 to a safe position and can be included properly wash with water, checking at the same time sites and degrees of pollution. Therefore, you can Easily perform cleaning in a shorter time.

Particularly in embodiments 1 and 2, you can minimize the workspace above the indoor unit that is required to fix or release the panel top rack 7, since this panel is fixed and released sliding the panel generally along the direction towards front and back of the indoor unit. Therefore the unit Interior can be installed in the vicinity of the interior ceiling. Is that is, freedom is guaranteed at installation sites.

In the upper grid panel 7 in embodiment 1, the upwardly enlarged portions 26, projected from the left and right frames 21a, 21b, are placed under the upper panel 31. Upward disassembly is prevented by fixing the panel in a state, in which the rear projection 24 is engaged in the coupling hole 36 of the front grill 3. In addition, since the crank 25 is positioned below the upper edge portion of the front panel 5, the upper grid panel 7 is reliably retained by the front grille 3 as long as the front panel 5 is not removed from the front grille 3. Therefore, safety is guaranteed, since the upper grid panel 7 is not accidentally removed, not even if a hand is placed on the panel, for example in the case that the indoor unit is conveniently tilted, when the indoor unit is transported, is it installed or the like. The overall appearance is also improved, since the crank 25 is hidden under the panel
forward 5.

As described above, the crank 25 It also works as a guide when the protective filter of the powder 8 is fixed. That is, the dust protection filter 8 is arranged in a generally vertical state along the front air inlet 4 on the front side of the unit interior, in a generally horizontal state along the upper air inlet 6 on the upper side and in a state folded between the front air inlet 4 and the air inlet top 6. When it is fixed by lifting the filter along the front air inlet 4 from below, the crank 25 is placed on the folded area of the dust protection filter 8, so that the upper end portion of the protection filter of the powder 8 is guided along the lower surface of the crank 25. Therefore, the fixing operation is simple, even while dust protection filter 8 is bent on the upper front side, as described above. Since no member used exclusively is required For such a guide, the entire construction can be simple.

In addition, in each embodiment, they are provided with two upper grid panels 7 in parallel on the upper surface of the housing 1. These grid panels top 7 are in the same shape and can be fixed to the rack front 3 interchangeably between the left sides and straight. Therefore, when the user separates the panel once and fix it again, it can be fixed interchangeably between the right and left sides and in this way you can perform the fixing more easily. In addition, for example, since it is used the same injection molding mold, when manufacturing 7. top grid panels can reduce the cost of manufacturing.

Concrete embodiments of the present invention have been described. The present invention is not limited to the embodiments described above, but can be changed in various ways within the scope of the present invention. For example, in embodiments 1 and 2, the crank 25 also serves as a locked portion coupled with the front panel 5 to prevent movement of the upper grid panel 7. But this crank 25 can only be provided in the area of the central portion of the front frame 21c and the projections that function as the locked portion are provided separately on both sides of the front frame
tero 21c.

In each of the embodiments above, an indoor unit constituted as an example is shown such that two upper grid panels 7 are provided in parallel on the upper surface. But the present invention It can be applied to a built-in indoor unit by providing a top grid panel or a large indoor unit constituted by providing three or more grid panels higher.

Industrial applicability

As described above, a unit interior of an air conditioner in accordance with this invention is provided with an air inlet on a surface top of the indoor unit and has a structure in which a upper grid panel covering the air inlet of the Top surface is removable. Therefore, the surface Top of the indoor unit can be easily cleaned. For the Therefore, this indoor unit is suitable for an indoor unit mounted on the wall, which is provided with an air inlet in its upper surface and is installed in a high position.

Claims (5)

An indoor unit of an air conditioner, comprising: a front air inlet (4) formed on a front surface of a housing (1) of the indoor unit; an upper air inlet (6) formed on an upper surface of the housing (1); a heat exchanger (11) provided in a ventilation passage from both the front air inlet (4) and also from the upper air inlet (6) to an air outlet (10); and an air distribution fan (12) provided in the ventilation passage; characterized by an upper grid panel (7) detachably fixed to the upper surface of the housing (1) to cover the upper air inlet (6), in which the upper grid panel (7) is fixed or is released from the housing (1) by sliding the grid panel upper (7) along a generally forward direction and back of the housing (1). 2. The indoor unit of a conditioner air according to claim 1, wherein the front panel (5) to cover the entrance of front air (4) is detachably attached to the housing (1) and a locked portion is provided for coupling with the front panel (5) on the upper grid panel (7) for prevent the upper grid panel (7) from moving. 3. The indoor unit of a conditioner air according to claim 2, wherein a crank (25) that projects in the direction front is provided on a leading edge of the grid panel upper (7) as the blocked portion and is formed so that an edge from the front panel (5) overlap the crank from above on the blocking. 4. The indoor unit of a conditioner air according to claim 3, wherein a dust protection filter (8) is arranged in a generally vertical state along the front air inlet (4) on one side of the front surface of the indoor unit, in a generally horizontal state along the upper air inlet (6) on one side of the upper surface thereof and in a folded state between the front air inlet (4) and the upper air inlet
rior (6) and, when this dust protection filter (8) is fixed while being pressed up from below to along the front air inlet (4), the crank is placed (25) above an area where the protective filter of air (8) is in the folded state between the air inlet front (4) and the upper air inlet (6), so that a upper end of the dust protection filter (8) is guided backward along a bottom surface of the crank (25). 5. The indoor unit of a conditioner air according to any one of claims 1 to 4, in which a plurality of upper grid panels (7) they are provided on the upper surface of the housing (1) in parallel to a direction of the width of the housing (1) and these upper grid panels (7) are configured in it shape.