JP2006010257A - Air-conditioning indoor unit and air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor air conditioning unit easy in assembling, reducing manufacturing cost, and capable of efficiently and surely preventing a contact accident. <P>SOLUTION: This air-conditioning indoor unit 3 has an indoor heat exchanger 21 for cooling or heating indoor air taken in from a suction port 17, and a cross flow fan 27 for taking in the air from the suction port 17 and blowing off the air of exchanging heat by the indoor heat exchanger 21 into a room from a blowout port 25; and has a fan guard 39 having a frame 53 composed of a plurality of resin vertical sash bars 57 for arranging at least one upper locking part 67 in the longitudinal direction and at least one resin upper horizontal sash bar 59 for connecting the respective vertical sash bars 57, and a wire 55 locked on the upper locking part 67 of the vertical sash bars 57 and extending in the longitudinal direction; and is characterized in that the fan guard 39 is installed in an air blowing passage to the blowout port 25 from the cross flow fan 27. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air conditioning indoor unit and an air conditioner including an entry preventing member that prevents a hand or the like from being inserted into an air outlet and prevents a finger or the like from contacting a blower.

Conventionally, as an air conditioner provided with this intrusion prevention member, there is one disclosed in Patent Document 1, for example.
In this case, a plurality of long holes are formed in the upper and lower wind direction louvers, and a fan guard is formed by inserting a wire through the long holes.

JP-A-8-145400 (paragraphs [0006] to [0007] and FIGS. 1 to 3)

  By the way, what is shown by patent document 1 has penetrated the wire in the elongate hole in order to ensure the operating range of the left-right wind direction louver. In this case, since the wire cannot be held firmly, the deformation of the wire cannot be sufficiently regulated. For this reason, when a hand or the like is inserted and comes into contact with the wire, the wire may be deformed and the space between the wires may be expanded. In addition, since it is necessary to assemble the left and right wind direction louvers and the wires, there is a problem that the assembly is complicated and the manufacturing cost is increased.

  In view of the above problems, an object of the present invention is to provide an indoor air conditioning unit that is easy to assemble, has a low manufacturing cost, can efficiently and reliably prevent a contact accident, and an air conditioner using the same. To do.

In order to solve the above problems, the present invention employs the following means.
That is, the indoor unit for air conditioning according to the present invention includes an indoor heat exchanger for cooling or heating indoor air taken in from the suction port, and taking in air from the suction port, and heat generated by the indoor heat exchanger. An air conditioning indoor unit comprising: a blower for blowing the exchanged air into the room from the air outlet; a plurality of resin-made short bars provided with at least one wire locking portion in the longitudinal direction; A guard assembly having a frame constituted by at least one resin-made long bar connecting the short bars, and a wire that is locked to the wire locking portion of each of the short bars and extends in the longitudinal direction. The guard assembly is attached to a blower passage from the blower to the blower outlet.

Thus, since the guard assembly is configured such that the plurality of short bars, at least one long bar and at least one wire are substantially orthogonal, the short bar, the long bar, and the wire Thus, a lattice shape is formed. When this guard assembly is attached to the air passage so that it is substantially perpendicular to the air blowing direction and the extending direction of the long beam is along the longitudinal direction of the air passage cross section, the short beam, the long beam, and the wire Since the configured grid is formed, it is possible to prevent a finger or the like from contacting the blower even when a hand or the like is inserted into the blower passage.
Further, since the short bars and the long bars are made of resin, the frame can be integrally formed by, for example, injection molding. Since the guard assembly can be formed on the frame simply by locking the wire to the wire locking portion, the guard assembly is easy to manufacture and the cost can be reduced.
Furthermore, since the guard assembly is independent of other members such as the wind direction louver and is attached independently of them, the assembly of the air conditioning indoor unit can be simplified.
Further, since the short bar is fixed to the air passage, the wire locked to the short bar is firmly locked. For this reason, the wire does not move greatly, and its position can be sufficiently regulated, so that it is not necessary to unnecessarily narrow the distance between the wires in consideration of the movement of the wire. Further, since the movement of the wire is restricted, for example, when a plurality of wires are attached, the number of wires can be reduced as compared with a case where a wire is inserted through a conventional long hole.

  In the indoor unit for air conditioning according to the present invention, the frame has engaging portions on both sides, and the air passage has a fixing engaging portion corresponding to each engaging portion. Features.

  The guard assembly incorporating a wire engages the engaging portion on one side with the fixing engaging portion on one side of the air outlet, and uses the elastic deformation of the resin to fix the engaging portion on the other side. Since it can be attached to the air outlet by being engaged with the engagement portion, it can be easily attached with one touch.

  In the indoor unit for air conditioning according to the present invention, a plurality of the engaging portions are provided at intervals in the longitudinal direction of the frame.

As described above, since the plurality of engaging portions are provided at intervals on both sides in the longitudinal direction, the guard assembly can be firmly and securely attached to the air outlet.
In addition, if the positions or shapes of the engaging portions are different on both sides of the frame, it is possible to prevent an error in the mounting direction.

  Moreover, in the indoor unit for air conditioning concerning this invention, the cross-sectional shape along the ventilation direction from the said fan to the said blower outlet in the said short beam and the said long beam is made into streamline shape, It is characterized by the above-mentioned.

  Thus, since the cross-sectional shape along the air blowing direction from the blower to the outlet in the short beam and the long beam is a streamline shape, the air blown from the fan smoothly smoothes the surfaces of the short beam and the long beam. Can flow. For this reason, since it can prevent that the pressure loss of the ventilation by a short beam and a long beam increases, the fall of air-conditioning efficiency can be prevented.

  In the indoor unit for air conditioning according to the present invention, the wire locking portion of the short bar is a hole having substantially the same shape as the cross section of the wire.

  Thus, since the wire locking portion of the short rail is a hole having substantially the same shape as the cross section of the wire, the wire is attached to the short rail with almost no room for movement by being inserted into the hole. For this reason, since the wire does not move greatly and its position is sufficiently regulated, it is necessary to unnecessarily narrow the interval between the wires as in, for example, the one inserted in the long hole provided in the conventional wind direction louver. Disappears. Further, since the movement of the wire is restricted, for example, when a plurality of wires are attached, the number of wires can be reduced as compared with a case where a wire is inserted through a conventional long hole.

  In the indoor unit for air conditioning according to the present invention, a part of the wire locking portion excluding the short bars at both ends is formed by a recessed portion opened to the outside.

In this way, a part of the wire locking part is formed by the recessed part opened to the outside, so that the mold for injection molding is compared with the case where all the wire locking parts are made holes correspondingly. The structure can be simplified and the molding time can be reduced. Therefore, the manufacturing cost of the frame can be reduced.
In addition, when a wire is mounted | worn, it is suitable for a recessed part to be a shape which can stop the movement to the ventilation direction of a wire.

  In the indoor unit for air conditioning according to the present invention, the short bars provided with the recesses and the short bars provided with the holes are alternately arranged in the wire extending direction.

As described above, the short bars provided with the recesses and the short bars provided with the holes are alternately arranged in the wire extending direction, so that the wire can be easily attached and the man-hour can be reduced.
Further, since the wires are securely locked by the holes every other short bar, for example, even when the wires come out of the recesses, the minimum contact prevention function can be maintained.

  Further, in the indoor unit for air conditioning according to the present invention, all of the wire locking portions except for the short bars at both ends are formed by recessed portions opened to the outside, and the recessed portions adjacent in the wire extending direction are viewed in the blowing direction. It is characterized by being opened in the opposite direction.

As described above, since the wire locking portions excluding the short bars at both ends are formed by the recessed portions opened to the outside, the mold structure for injection molding can be simplified, and the molding time can be reduced. Therefore, the manufacturing cost of the frame can be reduced.
Further, since the recesses adjacent in the wire extending direction are opened in the opposite direction when viewed in the air blowing direction, the wire can be firmly restrained only by sequentially engaging the adjacent recesses. Thus, since the guard assembly can be formed only by locking the wire in the recess without inserting the wire into the hole, the assembly time of the guard assembly can be shortened and the manufacturing cost can be reduced.

  In the indoor unit for air conditioning according to the present invention, the long rail is arranged along at least one of the two opposed surfaces constituting the air passage.

As described above, since the long beam is disposed along at least one of the two opposed surfaces constituting the air passage, the long beam disposed on the one surface almost includes the air passage. Without blocking, it will serve to maintain the strength and structure of the guard assembly. Therefore, since the pressure loss of ventilation is further reduced, it is possible to prevent a decrease in air conditioning efficiency.
In addition, it is more effective that the long rails are disposed on both of the two opposing surfaces that constitute the air passage.

  In the indoor unit for air conditioning according to the present invention, the long bar is disposed in an intermediate portion of the air passage.

In this way, since the long rail is disposed in the middle part of the air passage, it is a part of the function of preventing a finger or the like from contacting the blower by inserting a hand or the like into the air passage like the wire. become. Therefore, since the long rail functions as a wire, the number of wires can be reduced.
In addition, since the long bar has higher rigidity than the wire and is difficult to be deformed, the distance between adjacent wires can be determined in consideration of only the wire deformation when pushed by hand or the like. Therefore, the distance between the wires can be set wider than in the case where the wires are adjacent to each other and it is necessary to consider the deformation of both, so that the number of wires can be reduced.

  Further, in the indoor unit for air conditioning according to the present invention, the blower is a cross flow fan, constitutes an inner end of one surface of the air passage, and with the rotation of the cross flow fan, A stabilizer that forms a recirculation vortex in between, and at least one wire is disposed between the long beam and a surface that includes the stabilizer and that forms the air passage. To do.

  Since at least one wire is disposed between the long bar and the surface having the stabilizer and constituting the air passage, the long bar is not disposed in the vicinity of the stabilizer. As described above, since the long beam that easily obstructs the flow of air is not arranged near the stabilizer, the effect of the pressure loss of the air flow due to the long beam is formed between the cross flow fan and the stabilizer along with the rotation of the cross flow fan. The recirculation vortex that is almost not reached Therefore, it is possible to prevent an increase in noise and a decrease in blowing efficiency.

  An air conditioner according to the present invention includes an air conditioning indoor unit according to any one of claims 1 to 12, a compressor for compressing a refrigerant, and heat of the refrigerant and outdoor air. An air conditioning outdoor unit having an outdoor heat exchanger for performing exchange is connected to the air conditioning indoor unit and the air conditioning outdoor unit, and refrigerant is passed between the air conditioning indoor unit and the air conditioning outdoor unit. And a refrigerant pipe for circulation.

  In this air conditioner, a guard assembly composed of a short beam, a long beam, and a wire is attached to the air passage of the air conditioning indoor unit, so that a finger or the like is brought into contact with the fan by inserting a hand or the like. It can be effectively prevented. In addition, the manufacturing cost of the air conditioner can be reduced because the manufacturing cost of the guard assembly is low and the mounting thereof is simple.

According to the first aspect of the present invention, the guard assembly is configured such that the plurality of short bars, at least one long bar, and at least one wire are substantially orthogonal to each other. Even when is inserted into the air passage, it is possible to prevent a finger or the like from coming into contact with the air blower.
Moreover, since the short beam and the long beam are made of resin, the guard assembly is easy to manufacture and the cost can be reduced.
Furthermore, since the guard assembly is independent of other members such as the wind direction louver and is attached independently of them, the assembly of the air conditioning indoor unit can be simplified.
Moreover, since the short rail is fixed with respect to the air passage, for example, when a plurality of wires are attached, the number of wires can be reduced as compared with the case where the wires are inserted through a conventional long hole.

  According to invention of Claim 2, the guard assembly incorporating a wire can be easily attached by one touch using the elastic deformation of resin.

  According to the third aspect of the present invention, since the plurality of engaging portions are provided at intervals on both sides in the longitudinal direction, the guard assembly can be firmly and securely attached to the outlet.

  According to invention of Claim 4, since the cross-sectional shape along the ventilation direction from the air blower to a blower outlet in a short beam and a long beam is made into the streamline shape, the fall of air-conditioning efficiency can be prevented.

  According to the fifth aspect of the present invention, since the wire locking portion of the short bar is a hole having substantially the same shape as the cross section of the wire, for example, when attaching a plurality of wires, the wire is inserted into the conventional long hole. The number of wires can be reduced as compared with the above.

  According to the invention described in claim 6, since a part of the wire locking portion is formed by the recessed portion opened to the outside, the manufacturing cost of the frame can be reduced.

  According to the seventh aspect of the present invention, the short bars provided with the recesses and the short bars provided with the holes are alternately arranged in the wire extending direction, so that the wire can be easily attached and the man-hour is reduced. Can be reduced.

According to the eighth aspect of the invention, since the wire locking portions excluding both ends of the frame are formed by the recessed portions opened to the outside, the manufacturing cost of the frame can be further reduced.
Moreover, since the recessed part adjacent in a wire extending direction is open | released toward the reverse direction seeing in the ventilation direction, the assembly time of a guard assembly is shortened and manufacturing cost can be reduced.

  According to the ninth aspect of the present invention, since the long rail is disposed along at least one of the two opposed surfaces constituting the air passage, it is possible to prevent a decrease in air conditioning efficiency.

According to the tenth aspect of the present invention, since the long bar is disposed in the middle portion of the air passage, the number of wires can be reduced.
In addition, since the long bar has higher rigidity than the wire and is difficult to be deformed, the number of wires can be reduced as compared with the case where the wires are adjacent to each other and it is necessary to consider both deformations.

  According to the eleventh aspect of the present invention, since at least one wire is disposed between the long bar and the surface having the stabilizer and constituting the air passage, the increase in noise and the air blowing efficiency are improved. Decrease etc. can be prevented.

  According to the invention described in claim 12, since the manufacturing cost of the guard assembly is low and the mounting thereof is simple, the air conditioning apparatus can reduce the manufacturing cost.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view showing the schematic overall configuration of the air conditioner partially cut away.
The air conditioner 1 includes an air conditioning indoor unit 3 and an air conditioning outdoor unit 5.
The air conditioning indoor unit 3 and the air conditioning outdoor unit 5 are connected to each other by a refrigerant pipe 7 through which a refrigerant is conducted, an electric wiring (not shown), or the like. Two refrigerant pipes 7 are provided, and the refrigerant flows from the air conditioning indoor unit 3 to the air conditioning outdoor unit 5 on one side and from the air conditioning outdoor unit 5 to the air conditioning indoor unit 3 on the other side. .

The air conditioning outdoor unit 5 includes a compressor 9, an outdoor heat exchanger 11, a propeller fan 13, and the like.
The compressor 9 converts low-temperature and low-pressure gas refrigerant into high-temperature and high-pressure gas refrigerant and discharges it. The outdoor heat exchanger 11 is configured by a refrigerant pipe having a large number of plate-like fins around it, and is for realizing heat exchange between the refrigerant and the outdoor air. The propeller fan 13 is provided in order to improve the heat exchange efficiency in the outdoor heat exchanger 11 by always taking new air into the housing by generating an air flow that escapes from the back to the front in the housing. ing.

FIG. 2 is a cross-sectional view of the air conditioning indoor unit 3 according to the present embodiment. The configuration of the air conditioning indoor unit 3 will be described in conjunction with FIG.
The indoor unit 3 for air conditioning is formed on the upper surface and the front surface of the front panel 16 and the casing 15 which is a box-shaped housing formed by combining the front panel 16 with the base 14 and takes in indoor air. Heat is exchanged between the suction ports 17, 18, indoor heat exchangers 19, 21, 23 for cooling or heating indoor air taken in from these suction ports 17, 18, and the indoor heat exchangers 19, 21, 23. And a cross-flow fan (blower) 27 for taking in air from the suction port 17 and blowing out heat exchanged from the air outlet 25 into the room. ing.

The cross flow fan 27 has a configuration in which a plurality of blades are annularly arranged to form a cylinder, and the cylinder is reinforced by an intermediate plate perpendicular to the axis at a plurality of positions in the axial direction (perpendicular to the paper surface). . In addition, each blade | wing is arrange | positioned at equal pitch angular intervals mutually centering on the said axis line.
The indoor heat exchangers 19, 21, and 23 have a configuration in which a plurality of plate fins are arranged in parallel, side plates are arranged on both sides thereof, and a tube through which a refrigerant flows is arranged between the side plates and the plurality of plate fins. It is said that. The indoor heat exchangers 19, 21, and 23 are disposed so as to surround the cross flow fan 27 on the air suction side when the cross flow fan 27 rotates in the direction indicated by the arrow A in the drawing.

The inner lower portion 45 of the base 14 and the lower extension 43 of the front panel 16 form an air passage 33 having a horizontally long cross section. A tapered casing tip part 47 is attached to the inner lower part of the base 14 and constitutes a part of the air blowing path 33. The casing tip part 47 is arranged so as to form an overlapping part 50 with the inner lower part 45 of the base 14 facing the air passage 33, and the overlapping part 50 is elongated in the width direction on the casing tip part 47 side. An elongated hole 51 that is longer than 50 in the depth direction is provided. The long hole 51 forms a groove 49 in the overlapping portion 50 with the inner lower portion of the base 14.
The air passage 33 has a pair of upper and lower airflow direction louvers 35 and 36 disposed at the air outlet 25, a right and left airflow direction louver 37 disposed upstream of the upper and lower airflow direction louvers 35 and 36, A fan guard (guard assembly) 39 provided on the upstream side of the wind direction louver 37 is provided.
FIG. 3 is a perspective view showing a part of the mounting state of the fan guard 39 as viewed from the cross flow fan 27 side (inner side).

As shown in FIG. 2, the up and down wind direction louvers 35, 36 are configured to rotate about axes extending in the width direction, respectively, and positions indicated by a two-dot chain line and a solid line in FIG. 2. It is comprised so that it can set to arbitrary positions in between.
Each of the left and right wind direction louvers 37 is swingably attached to the lower extension 43 of the front panel 16 by a support shaft 41. The left and right wind direction louvers 37 are connected in the width direction, and are configured to change the wind direction all at once.

A nose 29 that is an extension of the base 14 and a stabilizer 31 that is extended from the lower extension 43 of the front panel 16 are provided on the air suction side of the cross flow fan 27 in the air passage 33.
The stabilizer 31 also serves as a drain guide that receives drain (condensate) generated in the indoor heat exchangers 19 and 21, and is a substantially flat plate that is parallel to the outer peripheral surface of the cross flow fan 27 with a predetermined gap. It has a shape.
The nose 29 also serves as a drain guide that receives drain (condensate) generated in the indoor heat exchanger 23, and has a generally flat plate shape that is parallel to the outer peripheral surface of the crossflow fan 27 with a predetermined gap. There is no.

FIG. 4 is a perspective view showing the entire structure of the fan guard 39, and FIG. 5 is a perspective view showing an enlarged part thereof.
The fan guard 39 is provided with a frame 53 and a wire 55 attached to the frame 53.
The frame 53 includes a number of vertical bars (short bars) 57, an upper horizontal bar (long bar) 59 and a lower horizontal bar (long bar) 61 that connect the vertical bars 57, and the selected vertical bar 57. An upper engagement portion (engagement portion) 63 provided at the upper portion and a lower engagement portion (engagement portion) 65 provided at the lower portion of the selected vertical beam 57 and lower horizontal beam 61 are provided. Yes.

The upper horizontal rail 59 connects the substantially central portions in the longitudinal direction of the vertical rails 57, and the lower horizontal rail 61 connects the lower ends of the vertical rails 57. The upper horizontal crosspiece 59 and the lower horizontal crosspiece 61 have a streamline shape whose cross section is long in the blowing direction. Further, the cross section of the vertical beam 57 has a streamline shape that is long in the blowing direction.
Each vertical rail 57 is provided with an upper locking portion (wire locking portion) 67 near the upper end, and a lower locking portion (wire locking portion) 69 is provided between the upper horizontal rail 59 and the lower horizontal rail 61. Is provided.
The upper locking portion 67 and the lower locking portion 69 provided on the vertical bars 57 at both ends are holes having substantially the same shape as the cross section of the wire 55. The other upper locking portion 67 and lower locking portion 69 provided on the vertical beam 57 are formed by recesses that are cut out obliquely and opened to the outside. The upper locking portion 67 and the lower locking portion 69 adjacent to each other in the extending direction of the wire 55 are opened in the opposite direction as viewed in the blowing direction, that is, when one is inside, the other is outward.

The upper engaging portion 63 is bent outward from the extending direction of the vertical beam 57, and has a substantially U-shape with the tip opened when viewed from above.
The upper engaging portion 63 is attached to the front panel 16 by inserting an opening into a fixing engaging portion 79 provided in the lower extension 43 of the front panel 16.
The upper engaging portions 63 are provided at the vertical bars 57 at both ends and at every two or four vertical bars 57 at the intermediate portion.

The lower engagement portion 65 is provided to be bent outward from the extending direction of the vertical beam 57. A substantially rectangular parallelepiped fitting portion 71 and a part thereof are connected to the fitting portion 71 at the lower end thereof. An insertion portion 73 having a substantially rectangular parallelepiped shape is provided.
The fitting portion 71 is fitted into a groove 49 formed by a long hole 51 provided in the casing tip part 47 on the overlapping portion 50 between the inner lower portion 45 of the base 14 and the casing tip part 47, and the insertion part 73 is The casing tip part 47 is elongated in the width direction, opens longer in the depth direction than the overlapping portion 50, and is inserted into the casing tip part 47 from the elongated hole 51. That is, the groove 49 and the long hole 51 constitute the fixing engaging portion of the present invention.

The frame 53 composed of the above-described members is made of resin and is integrally formed by an injection molding machine.
One end of the wire 55 is held by a retaining member 75 outside the vertical beam 57 at one end, and is sequentially locked to the upper locking portion 67 of each vertical beam 57, and the upper locking portion of the vertical beam 57 at the other end. 67 passes through the lower locking portion 69 through the lower locking portion 69 of each vertical beam 57, and the other end is held by a retaining member 75 outside the vertical beam 57 at one end.
A cover 77 that protects the wire 55 is provided outside the vertical beam 57 at the other end.

Operation | movement of the air conditioning apparatus 1 concerning this embodiment demonstrated above is demonstrated.
When the operation is started, the refrigerant to be cooled or warmed is carried from the outdoor unit 5 for air conditioning to the indoor heat exchangers 19, 21, 23 by the refrigerant pipe 7. And by the rotation of the cross flow fan 27, the indoor air taken in from the suction inlets 17 and 18 passes through the indoor heat exchangers 19, 21, and 23 and is cooled or heated. The air heat-exchanged by the indoor heat exchangers 19, 21, and 23 is blown into the room from the outlet 25 through the air passage 33 to cool or heat the room. Along with the rotation of the cross flow fan 27, a recirculation vortex is formed between the cross flow fan 27 and the stabilizer 31, thereby reducing noise and improving air blowing efficiency.

In this case, a fan guard 39 in which a lattice shape is formed by the vertical beam 57, the upper horizontal beam 59, the lower horizontal beam 61, and the wire 55 is formed in the air passage 33 substantially perpendicular to the air blowing direction. Since the extending direction is attached along the longitudinal direction of the air passage cross section, even when a hand or the like is inserted into the air passage, it is possible to reliably prevent a finger or the like from contacting the blower.
As described above, the upper horizontal rail 59 and the lower horizontal rail 61 are provided at an intermediate position of the air passage 33, so that, like the wire 55, a hand or the like is inserted into the air passage 33 and a finger or the like is cross-flowed. The contact with the fan 27 is prevented. For this reason, since the upper horizontal rail 59 and the lower horizontal rail 61 are the strength members of the fan guide and also fulfill the function of the wire 55, the number of installation locations of the wire 55 can be reduced.

Further, since the vertical beam 57, the upper horizontal beam 59, and the lower horizontal beam 61 have a streamlined cross-sectional shape along the air blowing direction, the wind sent from the cross flow fan 27 is transmitted to the vertical beam 57, the upper horizontal beam. The surface of 59 and the lower horizontal rail 61 flows smoothly and does not become a large resistance. For this reason, since the pressure loss of the ventilation by the vertical beam 57, the upper horizontal beam 59, and the lower horizontal beam 61 does not increase, even if the fan guard 39 exists, it is possible to prevent a decrease in air conditioning efficiency.
Further, since the upper horizontal rail 59 is provided at the longitudinal center of the vertical rail 57 and the wire 55 is disposed between the upper horizontal rail 59 and the stabilizer 31, the upper horizontal rail 59 is disposed at a position away from the stabilizer 31. Has been. For this reason, the pressure loss of the air blow by the upper horizontal rail 59 hardly affects the recirculation vortex formed between the stabilizer 31 and the cross flow fan 27. Therefore, it is possible to prevent an increase in noise and a decrease in air blowing efficiency caused by fluctuations in the recirculation vortex.

In the present embodiment, the upper horizontal rail 59 and the lower horizontal rail 61 are provided at the intermediate position of the air passage, but the present invention is not limited to this. For example, either the upper horizontal rail 59 or the lower horizontal rail 61 may be arranged along the lower extension 43 of the front panel 16 or the inner lower portion 45 of the base 14.
If it does in this way, since a horizontal rail will not interrupt | block the ventilation path substantially, it will reduce the pressure loss of ventilation, and can prevent the fall of air-conditioning efficiency.
In addition, it is more effective if it is arranged on both sides.
Alternatively, a single horizontal rail may be provided, and wires may be disposed above and below the horizontal rail to reduce pressure loss due to the horizontal rail.

Next, manufacture and assembly of the fan guard 39 will be described.
The frame 53 is integrally formed by an injection molding machine. In this case, since there is no punching shape like a hole other than the upper locking portion 67 and the lower locking portion 69 of the vertical bars 57 at both ends, the mold structure for injection molding can be simplified, and the mold It will be cheaper. In addition, the injection process is simplified accordingly, and the molding time can be reduced. Therefore, the manufacturing cost of the frame can be reduced.

A wire 55 is attached to the frame 53. The wire 55 is attached by inserting the wire 55 into the upper locking portion 67 from the outside of the vertical beam 57 at one end and sequentially locking the upper locking portion 67 of each vertical beam 57 formed by a recessed portion opened to the outside. Let Then, it is inserted through the upper locking portion 67 of the vertical beam 57 at the other end and inserted into the folded-down lower locking portion 69. In addition, the vertical locking member 69 is sequentially locked to the lower locking portion 69 of each vertical beam 57 formed by the recessed portion opened to the outside, and the lower locking portion 69 of the vertical beam 57 at one end is inserted. In this state, the wire 55 is tightened and cut from both sides, and a retaining member 75 is attached to both ends.
At this time, the upper locking portion 67 and the lower locking portion 69 excluding both ends of the frame 53 are formed as recesses opened to the outside, and the adjacent upper locking portions 67 and the lower locking portions 69 are blown. Since the wire 55 is opened in the opposite direction when viewed in the direction, the wire 55 can be firmly restrained only by sequentially locking in the adjacent recesses.

As described above, the fan guard 39 is formed simply by locking the wire 55 to the frame 53. Therefore, the assembly time of the fan guard 39 is shortened, and the manufacturing cost can be reduced.
Further, in this embodiment, the fan guard 39 can be formed simply by locking the wire 55 in the recess without inserting the wire 55 into the hole, so that the assembly time of the fan guard can be further shortened and the manufacturing cost can be further reduced.

In the present embodiment, except for the vertical bars 57 at both ends, the upper locking portion 67 and the lower locking portion 69 are formed as recesses opened to the outside, but the present invention is limited to this. is not.
For example, in some of the vertical bars 57, the upper locking part 67 and the lower locking part 69 may have the same holes as the vertical bars 57 at both ends. Further, the vertical bars 57 may be arranged so that the recessed portions and the holes opened to the outside are alternately arranged.
In this way, the wire 55 is securely locked by the vertical rail 57 passed through the hole, so that the minimum contact prevention function can be maintained even if the wire 55 is removed from the recess. For this reason, unlike the present embodiment, since it is not necessary to open the concave portion in the reverse direction when viewed in the blowing direction, the manufacturing of the frame 53 is inexpensive.

Further, the upper locking portions 67 and the lower locking portions 69 of all the vertical bars 57 may be holes having substantially the same shape as the cross section of the wire 55.
By doing so, the wire 55 is inserted into the hole and attached to the vertical rail 57 with little room for movement, so that the wire does not move greatly and its position is sufficiently regulated. Therefore, for example, there is no need to unnecessarily narrow the distance between the wires 55 as in the case of being inserted through a long hole provided in a conventional wind direction louver. Further, since the movement of the wire 55 is restricted, for example, when a plurality of wires 55 are attached, the number of wires can be reduced as compared with a case where the wire 55 is inserted through a conventional long hole.

The fan guard 39 formed in this manner is inserted into a fixing engagement portion 79 provided with the upper engagement portion 63 in the lower extension portion 43 of the front panel 16. Next, the casing tip part 47 is attached to the lower part of the long hole 51 provided in the casing tip part 47 so that the fitting part 71 is fitted into the groove 49, and the fan guard lower engagement part is fixed. Is done. Thereby, the attachment of the fan guard 39 to the air supply path 33 is completed.
Thus, the fan guard 39 can be easily attached to the air passage 33.
At this time, since the upper engagement portion 63 and the lower engagement portion 65 are different in shape, it is possible to prevent the fan guard 39 from being attached in the wrong direction. Moreover, since the attachment position in the width direction is also different, it is possible to further prevent attachment mistakes.

Thereafter, in the air passage 33, left and right wind direction louvers 37 and up and down wind direction louvers 35 and 36 are attached.
As described above, the mounting of the fan guard 39 is independent of the left and right wind direction louvers 37 and the up and down wind direction louvers 35 and 36, so that the assembly of the air conditioning indoor unit can be simplified.

  In this embodiment, since the cross-sectional shape of the air passage 33 is horizontally long, a large number of vertical rails 57 are provided, but when the air passage is vertically long, for example, like an indoor air conditioning unit for windows, A large number of side rails will be provided. That is, the horizontal rail corresponds to the short rail referred to in the present invention.

1 is a perspective view showing an overall schematic configuration of an air conditioner according to an embodiment of the present invention. It is a longitudinal cross-sectional view of the indoor air conditioning unit concerning one Embodiment of this invention. It is a perspective view which shows the attachment state of the fan guard concerning one Embodiment of this invention. It is a perspective view showing the whole fan guard structure concerning one embodiment of the present invention. It is the elements on larger scale of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus 3 Indoor air conditioner unit 5 Outdoor air conditioner unit 7 Refrigerant piping 17, 18 Inlet port 19,21,23 Indoor heat exchanger 25 Outlet 27 Cross flow fan 31 Stabilizer 33 Air supply path 39 Fan guard 49 Groove 50 Duplication Portion 51 Long hole 57 Vertical beam 59 Upper horizontal beam 61 Lower horizontal beam 63 Upper engagement part 65 Lower engagement part 67 Upper locking part 69 Lower locking part 79 Fixing engagement part

Claims (12)

An indoor heat exchanger for cooling or heating indoor air taken in from the inlet;
A blower for taking in air from the suction port and blowing out the air heat-exchanged by the indoor heat exchanger into the room from the outlet,
In an indoor unit for air conditioning comprising
A plurality of resin short bars provided with at least one wire locking portion in the longitudinal direction, a frame constituted by at least one resin long bar connecting the short bars, and the short bars. A guard assembly having a wire locked to the wire locking portion and extending in the longitudinal direction,
The air conditioning indoor unit, wherein the guard assembly is attached to a blower passage from the blower to the blower outlet. The frame has engaging portions on both sides,
The air conditioning indoor unit according to claim 1, wherein the air passage includes a fixing engaging portion corresponding to each of the engaging portions. The indoor unit for air conditioning according to claim 2, wherein a plurality of the engaging portions are provided at intervals in the longitudinal direction of the frame. The air conditioning according to any one of claims 1 to 3, wherein a cross-sectional shape along a blowing direction from the blower to the blower outlet in the short beam and the long beam is a streamline shape. Indoor unit. The indoor unit for air conditioning according to any one of claims 1 to 4, wherein the wire locking portion of the short rail is a hole having substantially the same shape as a cross section of the wire. 6. The indoor unit for air conditioning according to claim 5, wherein a part of the wire locking portion excluding the short bars at both ends is formed by a recessed portion opened to the outside. The indoor unit for air conditioning according to claim 6, wherein the short bar provided with the recess and the short bar provided with the hole are alternately arranged in a wire extending direction. The wire locking portions excluding the short bars at both ends are all formed by recesses opened to the outside,
6. The indoor unit for air conditioning according to claim 5, wherein the concave portions adjacent in the wire extending direction are opened in the opposite direction as viewed in the air blowing direction. 9. The air conditioner according to claim 1, wherein the long rail is disposed along at least one of two opposed surfaces constituting the air passage. 10. Indoor unit. The indoor unit for air conditioning according to any one of claims 1 to 9, wherein the long rail is disposed in an intermediate portion of the air passage. The blower is a cross flow fan,
The stabilizer comprises a recirculation vortex between the crossflow fan as the crossflow fan is rotated, forming an inner end of one surface of the air passage,
The at least 1 wire is arrange | positioned between the surface which has this stabilizer, and comprises the said ventilation path, and the said long bar, The any one of Claim 1-10 characterized by the above-mentioned. Indoor unit for air conditioning. The indoor unit for air conditioning as described in any one of Claims 1-11,
An air conditioning outdoor unit having a compressor for compressing the refrigerant, and an outdoor heat exchanger for causing heat exchange between the refrigerant and outdoor air;
The air comprising: the air conditioning indoor unit and the air conditioning outdoor unit, and a refrigerant pipe for circulating a refrigerant between the air conditioning indoor unit and the air conditioning outdoor unit. Harmony device.

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