JP2010032138A - Air blowing guide support structure and air conditioner outdoor unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively solve the problem of thermal deformation when a support structure for fixing and supporting an air blowing guide by a flat plate-shaped support member is used in an environment with a wide range of temperature change. <P>SOLUTION: The air blowing guide support structure 1 includes the air blowing guide 12 combined with an air blower and used to guide an air flow by the air blower 11 and the flat plate-shaped support member 14 in which a ventilation opening part 18 serving as a passage of the air flow by the air blower 11 is formed, and is constituted by fixing and supporting the air blowing guide 12 by the flat plate-shaped support member 14. Since the flat plate-shaped support member 14 comprises a plurality of support pieces 15, the tabular support member 14 has an enhanced follow-up structure enhancing followability with respect to thermal deformation due to temperature change of the air blowing guide 12. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a support structure for a blower guide that is used in combination with a blower to guide an airflow generated by the blower. For example, the airflow by the blower is accompanied by a large temperature change as in the case of an air conditioner outdoor unit. In particular, the present invention relates to a support structure that is particularly suitable for supporting a blower guide that is exposed to a large temperature change, and to an air conditioner outdoor unit that uses such a blower guide support structure.

  The blower may be used as a blower combined with a blower guide. In other words, the blower is configured by combining the blower with a blower guide that guides the air flow by the blower for the purpose of separating the pressure upstream of the blower and the pressure downstream of the blower, suppressing airflow separation on the blade surface, and rectifying the airflow. This is the case.

  As a typical example of an apparatus or an apparatus using such a blower, there is an outdoor unit of an air conditioner (hereinafter, referred to as an outdoor unit or an air conditioner outdoor unit as appropriate). The outdoor unit generally uses a refrigeration cycle, and is configured by assembling a heat exchanger, a compressor, a blower, and a blower guide as main elements in a box-shaped casing. Then, the air flow of the flow sucked into the inside of the housing through the heat exchanger and blown out from the blowing side of the housing is generated by the blower, while the refrigerant gas from the compressor is circulated through the heat exchanger, and the heat In the exchanger, heat exchange between the refrigerant gas and the air flow is performed, and blowing of the air flow by the blower is guided by a blower guide (for example, Patent Documents 1 to 3).

JP 2006-38287 A JP 2005-127578 A JP 7-63373 A

  The air blowing guide in the outdoor unit as described above is required to have high functionality for reducing air blowing noise and improving air blowing efficiency, and various shapes are adopted in order to respond to it. Supported directly or indirectly.

  As a shape of the air guide in the outdoor unit, a bell mouth type is representative. That is, it is a blower guide comprising a bell mouth portion formed in a bell mouth shape and a duct portion formed in a cylindrical shape. Various structures are possible for the support of the bell mouth type air blowing guide by the housing, and as one of them, the lower edge of the bell mouth part is used as a flange for fastening, and via a flat support member There is a support structure that is supported by a housing. Specifically, a flat support member is attached to the housing, and the air guide is fastened and fixed to the flat support member at the lower edge of the bell mouth portion by screwing or the like, via the flat support member. It is a support structure which makes a housing | casing support a ventilation guide. Hereinafter, this support structure is temporarily referred to as a flat support member type support structure.

  Moreover, since various shapes are employ | adopted for the ventilation guide in an outdoor unit as mentioned above, when it is produced by resin molding with a high degree of freedom in shape, that is, it is often made of resin. When the air blowing guide is made of resin, the following thermal deformation problem occurs.

  In an outdoor unit, for example, a temperature difference close to 100 ° C. may occur between the cooling operation and the heating operation, and a large temperature change is accompanied with the air flow by the blower. For this reason, the air blowing guide is exposed to a large temperature change, and heat deformation (expansion and contraction) occurs according to the temperature change. In this case, the resin-made blast guide has a coefficient of expansion that is made of metal such as a support member in the support structure of the blast guide (such as a housing of the outdoor unit or a flat plate-like support member attached to the blast guide for supporting it). There is a possibility that thermal deformation that is significantly different from that of the support member may occur due to the fact that it is greatly different from the normal expansion coefficient.

  For example, in the case of the above-described flat support member-type support structure, depending on the degree of thermal deformation difference from the flat plate support member, the wave that causes the lower edge of the bell mouth portion to warp between the fastening portions by screwing or the like. This creates a striking deformation, which causes air leakage in the air flow generated by the blower and lowers the air blowing efficiency.In addition, the screw hole in the case of screwing expands into a long hole and loosens the fastening, thus vibrating. There is a possibility that the state becomes easy, or that the blower guide is damaged from the fastening portion where stress due to deformation is concentrated.

  With regard to such thermal deformation problems, for example, in the case of a flat support member type support structure, if the air guide is fastened and fixed to the flat support member with screws, the screw holes are elongated and tightened. A structure that allows play and absorbs the difference in thermal deformation between the air guide and the flat plate support member is effective. However, the structure that allows play in the fastening causes problems such as worsening the vibration problem that is most necessary to be avoided in the outdoor unit, and cannot be practically adopted. Therefore, a support structure that can effectively solve the thermal deformation problem, that is, a support structure that can substantially avoid the adverse effects due to the thermal deformation of the blower guide while ensuring a sufficient fastening force is required.

  The present invention has been made to meet such a demand, and the temperature of a blower guide support structure in a blower device in which a blower guide is combined with a blower, in particular, a flat support member type support structure, is similar to that of an outdoor unit. The first object is to be able to effectively solve the problem of thermal deformation when used in an environment with a wide range of change, and for an outdoor unit having a flat support member type support structure, the flat support member The second problem is to effectively solve the thermal deformation problem in the support structure.

  In the case of a flat support member type support structure, the thermal deformation problem is caused by a large difference in thermal deformation between the air guide and the flat support member due to the temperature change of the air flow by the blower. It is caused as a direct cause that the deformation of the flat support member cannot follow. Therefore, in the case of a flat support member type support structure, if the flat support member is provided with a structure that enhances the followability of the air blowing guide to thermal deformation, the thermal deformation problem can be effectively solved.

  In the present invention, the first problem is solved based on the above concept. That is, the blower guide support structure according to the present invention includes a blower guide used in combination with the blower to guide an air flow by the blower, and a flat plate-like support member in which a ventilation opening serving as an air flow passage by the blower is formed. The flat guide member is fixed and supported by the flat plate-like support member, and a high follow-up structure is provided to the flat plate-like support member that enhances follow-up performance against expansion and contraction due to a temperature change of the blower guide. It is characterized by that.

  In the flat support member type support structure, the flat support member has a ventilation opening that serves as an air flow passage by the blower. In order to fix the air guide to such a flat support member, the air guide is fastened to the flat support member by screwing or the like made along the periphery of the ventilation opening in the flat support member. It is normal. On the other hand, for example, in the case of an outdoor unit, the flat support member is attached to a box-shaped housing, and the attachment is performed by screwing or the like made along the peripheral edge of the flat support member. Usually, this is done by fastening the frame to the casing.

  In such a support structure, for example, the flat plate-like support member is divided into a plurality of support pieces, that is, the flat plate-like support member is constituted by a plurality of independent support pieces. If it is made up of a plurality of support pieces, it becomes possible to improve the followability of the plate-like support member to the thermal deformation of the air guide while ensuring sufficient support strength without causing an increase in vibration. . That is, when each support piece is cantilevered and receives a large stress due to thermal deformation of the air blowing guide, each support piece is easily bent due to the cantilever state. The followability of the member is enhanced, and on the other hand, with respect to the support strength, a sufficient support strength that does not cause an increase in vibration can be ensured.

  Therefore, in the present invention, it is preferable that the high follow-up structure is provided by configuring the flat plate support member with a plurality of support pieces for the above-described air guide support structure.

  When providing a high follow-up structure by making a support piece of a flat plate-like support member, in addition to the deformation followability due to bending in the cantilever state as described above, each support piece is also given a deformability in the surface direction. Thus, the deformation followability can be further improved. Therefore, in the present invention, in the air guide support structure as described above, the support piece is provided with a softening portion that easily causes deformation in the surface direction of the support piece due to stress generated in the support piece due to expansion and contraction of the air guide. It is a preferable form to provide in.

  The softening portion of the support piece can be formed, for example, by providing a bead or slit in the support piece. In particular, when the support piece is formed of a bead, the bead can also function to increase the rigidity of the support piece. For this reason, in the present invention, it is preferable that the softening portion is formed by a bead provided on the support piece with respect to the air guide support structure as described above.

  In the present invention, in order to solve the second problem, the air guide support structure as described above is applied to an outdoor unit of an air conditioner. That is, the outdoor unit of the air conditioner according to the present invention includes a heat exchanger provided inside a casing, and a flow of air that is sucked into the casing through the heat exchanger and blown out from the outlet side of the casing. A blower attached to the housing for generating a flow, a blower guide provided in combination with the blower for guiding the air flow by the blower, and the housing for fixing and supporting the blower guide A flat support member attached to the body is provided, and a high follow-up structure is provided for the flat support member that enhances the followability to expansion and contraction due to a temperature change of the air blowing guide.

  In such an air conditioner outdoor unit, the support of the air blowing guide is a flat support member type support structure, and the air guide is not directly supported by the housing, but indirectly by interposing a flat support member. The ventilation guide is supported by the housing. For this reason, when the blower guide is a resin molded product having a high degree of freedom in shape, the blower guide mold can be made smaller and simplified, and the blower guide can be easily shared between models with different housing dimensions. Become. However, such a flat support member type support structure is accompanied by a problem of thermal deformation, but it is effective for the reasons described above by providing the flat support member with a high follow-up structure. Can be resolved.

  Further, in the present invention, for the reason as described above, it is preferable that the high follow-up structure is provided by configuring the flat support member by a plurality of support pieces for the air conditioner outdoor unit as described above. In addition, it is preferable that a softening portion is provided on the support piece that facilitates deformation in the surface direction of the support piece due to stress generated in the support piece due to expansion and contraction of the air blowing guide. Is preferably formed by a bead provided on the support piece.

  According to the present invention as described above, it is possible to effectively solve the thermal deformation problem when the flat support member type support structure is used in an environment having a wide temperature change range such as an air conditioner outdoor unit. Moreover, about the air conditioner outdoor unit which has a flat support member type support structure, the thermal deformation problem in the flat support member type support structure can be effectively solved.

  Hereinafter, modes for carrying out the present invention will be described. 1-3, the structure of the outdoor unit 2 of the air conditioner to which the ventilation guide support structure 1 by 1st Embodiment is applied is simplified and shown. 1 shows a perspective view of partial disassembly of the outdoor unit 2, FIG. 2 shows a plan sectional view of the outdoor unit 2 in FIG. 2 (a), and FIG. 2 (b) shows the outdoor unit 2 in FIG. FIG. 3 shows the blower guide support structure 1 as a partially enlarged side sectional view. However, hatching of the cross section is omitted.

  First, an outline of a general configuration of the outdoor unit 2 will be described. The outdoor unit 2 is an upper blowing type and has a housing 3 formed in a box shape. The upper side of the housing 3 is a blowing side, and a blower unit (blower device) 4 is assembled there. A heat exchanger 5, a compressor 6, a refrigerant container 7, and the like are assembled inside the body 3, and the peripheral portion of the blower unit 4 is covered with a decorative cover 8. In FIG. 1, the compressor 6 and the refrigerant container 7 are not shown.

  The air blowing unit 4 is configured by combining an axial flow type air blower 11 and a bell mouth type air blowing guide 12, and an air flow F as shown in FIG. Outside air is sucked into the inside of the housing 3 through the ventilation portions 13 (FIG. 2 (a)) provided in each of them, and an air flow F is formed that flows out from the blowing side of the housing 3, that is, the upper side. .

  The heat exchanger 5 is formed in a shape having a U-shaped cross section whose open side is wide, and the refrigerant gas from the compressor 6 is circulated along the left and right side surfaces and the back surface of the housing 3. Is arranged. Therefore, the heat exchanger 5 comes into contact with the outside air sucked into the housing 3 as the air flow F. Then, heat exchange is performed between the air flow F and the refrigerant gas circulating in the heat exchanger 5 by the contact.

  Below, the detail of the ventilation unit 4 is demonstrated. As described above, the blower unit 4 is configured by combining the blower 11 with the blower guide 12, and is characterized in that the blower guide support structure 1 is formed for the blower guide 12. The air guide support structure 1 has a structure in which the air guide 12 is supported by the housing 3 via a flat support member 14. Specifically, it is as follows.

  The plate-like support member 14 is composed of two independent support pieces 15 and 15 each made of metal, and is configured to have substantially the same size as the upper surface of the housing 3 as a whole. The pair of support stays 16 and 16 are attached by screwing or the like. That is, the support pieces 15 and 15 in the flat support member 14 are attached to the support stays 16 and 16 by screws or the like. Further, the flat support member 14 is formed with a circular vent opening 18 serving as a passage for the air flow F by forming an arc-shaped partial opening 17 in each of the support pieces 15.

  Such a flat support member 14 also functions as a closing plate in association with the shape of the heat exchanger 5. That is, as described above, the heat exchanger 5 has a U-shaped cross-section whose opening side is wide. This is because the adjacent air conditioner outdoor unit is installed when a plurality of outdoor units 2 are installed side by side. In order to avoid interfering with the intake of outside air, it is a shape generally used in an air conditioner outdoor unit of an upward blowing type. Since the heat exchanger 5 has such a shape, a gap 19 having a triangular cross section as shown in FIG. 2 is formed between the heat exchanger 5 and the housing 3. If it becomes a ventilation path, the heat exchange efficiency with the external air in the heat exchanger 5 will fall. Therefore, in order to prevent the gap 19 from becoming a ventilation path, the gap 19 can be closed by causing the flat support member 14 to also function as a closing plate.

  On the other hand, the air blowing guide 12 is a bell mouth type, and includes a bell mouth portion 21 having a bell mouth shape and a duct portion 22 having a cylindrical shape, and the shape thereof is complicated. It is made of resin by high resin molding. And this ventilation guide 12 is being fixed to the flat support member 14 by utilizing the lower edge part of the bellmouth part 21 as a flange for fastening. Specifically, a plurality of screw holes 23 are provided in the lower edge portion of the bell mouth portion 21, while screwing holes 24 corresponding to the screw holes 23 are provided in the support pieces 15, 15 of the flat plate-like support member 14. The air guide 12 is fastened and fixed to the flat support member 14 by screwing with a set screw 25 (FIGS. 2 and 3) using the screw hole 23 and the screwing hole 24.

  In the air guide support structure 1 as described above, a large temperature change is accompanied by the air flow F to which the air guide 12 and the flat support member 14 are exposed. Therefore, thermal deformation (expansion and shrinkage) given as “deformation amount = length in deformation direction × linear expansion coefficient × temperature difference” occurs in the air guide 12 and the flat support member 14. In this case, the air blowing guide 12 and the flat plate-like support member 14 have different linear expansion coefficients and different shapes, so that the state of thermal deformation is greatly different. There is. That is, undulation deformation in which the lower edge portion of the bell mouth portion 21 warps between the fastening portions by screwing, and thus air leakage occurs in the air flow F to lower the blowing efficiency, and the screw holes 23 are formed. Thermal deformation such as expansion into a long hole and loosening of the fastening, which leads to a state in which vibration is likely to occur, and further causes a situation where the air blowing guide 12 is damaged from a fastening portion where stress due to deformation is concentrated. It is a problem. However, since such a thermal deformation problem is caused directly by the inability of the flat plate-like support member 14 to follow the thermal deformation of the air blowing guide 12, the followability to the air deformation of the air blowing guide 12 is improved. The structure can be effectively eliminated by applying the structure to the flat support member 14.

  Based on such a concept, in the air blowing guide support structure 1, the flat support structure 14 is provided with a high follow-up structure in which the flat support member 14 is configured by two independent support pieces 15 and 15. That is, when the support pieces 15 and 15 are cantilevered and are subjected to a large stress due to thermal deformation of the blower guide 12, the support pieces 15 and 15 are in a cantilever state, so that the arrows shown in FIG. It is easy to bend in the direction of A. Therefore, the followability of the plate-like support member 14 to the thermal deformation of the air blowing guide 12, especially the deformation in the direction in which the diameter of the bell mouth portion 21 is enlarged, is enhanced. On the other hand, with respect to the support strength, it is possible to ensure a sufficient support strength for the flat plate-like support member 14 so as not to cause an increase in vibration.

  Further, in the air blowing guide support structure 1, the air blowing guide 12 is indirectly supported by the housing 3 by interposing the flat plate-like support member 14, instead of directly supporting the air blowing guide 12 by the housing 3. ing. For this reason, it is possible to reduce the size and size of the molding die in resin molding of the blower guide 12, and to easily share the blower guide 12 between models having different housing dimensions.

  Here, in the above embodiment, the flat support member 14 is provided with a high follow-up structure by being constituted by two independent support pieces 15, 15. However, this is not necessarily required. . For example, like the flat plate-like support member 26 shown in FIG. 4, a non-independent support piece 28, 28 is formed by making a partial cut 27 connected to the ventilation opening 18. Also good. Further, the number of support pieces is not limited to two and may be increased.

  Next, a second embodiment will be described. As shown in FIGS. 5 and 6, in the blower guide support structure 32 in the outdoor unit 31 according to the second embodiment, the arcuate partial opening 17 is provided on each of the support pieces 15 and 15 of the flat plate-like support member 14. A bead 33 is provided so as to extend along the direction. This bead 33 is a softening part, and makes it easy to cause deformation in the surface direction of the support piece 15 (direction indicated by arrow B in FIG. 6) due to stress generated in the support piece 15 due to thermal deformation of the blower guide 12. To work. By providing such a bead 33, in addition to the deformation followability due to the bending of each support piece 15 in the cantilever state as described above, the deformation followability in the surface direction of each support piece 15 is also improved. Therefore, the deformation followability of the flat plate-like support member 14 with respect to the air blowing guide 12 can be further enhanced. In addition, since the bead 33 also helps to increase the bending rigidity of the flat plate support member 14, in the air guide support structure 32, the support of the air guide 12 by the flat plate support member 14 becomes more stable.

  Except for the above configuration, the outdoor unit 31 and the air guide support structure 32 in the present embodiment are the same as the outdoor unit 2 and the air guide support structure 1 in the first embodiment. About the structure etc. which are common in the support structure 1, the same code | symbol as in FIGS. 1-3 is attached | subjected and shown, and the description above shall be used.

  Next, a third embodiment will be described. As shown in FIGS. 7 and 8, in the blower guide support structure 42 in the outdoor unit 41 according to the third embodiment, the arcuate partial opening 17 is provided on each of the support pieces 15 and 15 of the flat plate-like support member 14. A plurality of beads 43 are provided so as to extend in the intersecting direction. These beads 43 are softening portions similar to the beads 33 in the second embodiment, and the surface direction of the support piece 15 due to the stress generated in the support piece 15 due to thermal deformation of the blower guide 12 (however, in the second embodiment) It functions to easily cause deformation in a direction that intersects the surface direction in the case of the beads 33 in the form. Therefore, in the case of the present embodiment as well, as in the second embodiment, it is possible to further improve the deformation followability of the flat plate support member 14 with respect to the air blowing guide 12, and to support the air flow guide 12 by the flat plate support member 14 more stably. It can be a typical one.

  Except for the above configuration, the outdoor unit 41 and the air guide support structure 42 in the present embodiment are the same as the outdoor unit 2 and the air guide support structure 1 in the first embodiment. About the structure etc. which are common in the support structure 1, the same code | symbol as in FIGS. 1-3 is attached | subjected and shown, and the description above shall be used.

  As mentioned above, although the form for implementing this invention was demonstrated, these are only representative examples, This invention can be implemented with various forms in the range which does not deviate from the meaning. For example, in each of the above-described embodiments, the air guide support structure is applied to an air conditioner outdoor unit. However, the present invention is not limited to this and can be applied to various devices and apparatuses. In each of the above embodiments, the air conditioner outdoor unit is an upward blowing type, but may be a side blowing type air conditioner outdoor unit. Moreover, in each said embodiment, although the softening part provided in the support piece in a flat support member was formed with a bead, it is also possible to form a softening part with a slit instead of a bead. .

It is a figure which shows the perspective state of the partial decomposition | disassembly of the structure of the air conditioner outdoor unit to which the ventilation guide support structure by 1st Embodiment is applied. It is a figure which shows the plane sectional view state and side surface sectional view state of the air conditioner outdoor unit of FIG. It is a figure which shows the ventilation guide support structure by 1st Embodiment as the side surface sectional state which expanded partially. It is a figure which shows the structure of the flat support member by another example. It is a figure which shows the plane cross-sectional view state of the air conditioner outdoor unit to which the ventilation guide support structure by 2nd Embodiment is applied. It is a figure which shows the ventilation guide support structure by 2nd Embodiment as the side surface sectional state which expanded partially. It is a figure which shows the plane sectional view state of the air conditioner outdoor unit to which the ventilation guide support structure by 3rd Embodiment is applied. It is a figure which shows the ventilation guide support structure by 3rd Embodiment as the side surface sectional state which expanded partially.

Explanation of symbols

1, 32, 42 Blower guide support structure 2, 31, 41 Air conditioner outdoor unit 3 Housing 5 Heat exchanger 11 Blower 12 Blower guide 14 Flat support member 15 Support piece 18 Ventilation openings 33, 43 Beads (softening) Part)
F Air flow

Claims (8)

A blower guide used in combination with the blower to guide an air flow by the blower, and a flat plate-like support member in which a ventilation opening serving as a passage of the air flow by the blower is formed, and the blower guide has the flat plate shape A blower guide support structure that is fixed and supported by a support member,
A blower guide support structure, wherein the flat support member is provided with a high follower structure that enhances followability to expansion and contraction due to a temperature change of the blower guide.   The blast guide support structure according to claim 1, wherein the high follow-up structure is provided by configuring the flat plate-like support member with a plurality of support pieces.   The softening part which makes it easy to produce the deformation | transformation in the surface direction of the said support piece by the stress which arises in the said support piece by the expansion | contraction of the said ventilation guide is provided in the said support piece. Blower guide support structure.   The said softening part is formed with the bead provided in the said support piece, The ventilation guide support structure of Claim 3 characterized by the above-mentioned. A heat exchanger provided inside the housing, attached to the housing to generate an air flow that is sucked into the housing through the heat exchanger and blown from the blowing side of the housing A blower guide provided in combination with the blower for guiding the air flow by the blower, and a flat support member attached to the housing for fixing and supporting the blower guide An air conditioner outdoor unit,
An air conditioner outdoor unit, wherein the flat support member is provided with a high follow-up structure that enhances follow-up to expansion and contraction due to temperature change of the air blowing guide.   The air conditioner outdoor unit according to claim 5, wherein the high-tracking structure is provided by configuring the flat plate-like support member with a plurality of support pieces.   The softening part which makes it easy to produce the deformation | transformation in the surface direction of the said support piece by the stress which arises in the said support piece by the expansion / contraction of the said air blow guide is provided in the said support piece. Air conditioner outdoor unit.   The air conditioner outdoor unit according to claim 7, wherein the softening portion is formed of a bead provided on the support piece.

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