CN100483034C - Top plate structure for air conditioner installed at high place - Google Patents
Top plate structure for air conditioner installed at high place Download PDFInfo
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- CN100483034C CN100483034C CNB2005800170393A CN200580017039A CN100483034C CN 100483034 C CN100483034 C CN 100483034C CN B2005800170393 A CNB2005800170393 A CN B2005800170393A CN 200580017039 A CN200580017039 A CN 200580017039A CN 100483034 C CN100483034 C CN 100483034C
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- Prior art keywords
- top board
- reinforced ribs
- fan
- heat exchanger
- air conditioner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/008—Indoor units, e.g. fan coil units with perfuming or deodorising means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
- F24F2013/0616—Outlets that have intake openings
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
- Other Air-Conditioning Systems (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
An air conditioner has a body casing for receiving a fan and a fan motor, heat exchanger, drain pump, switch box, etc. and has a top plate placed at a top surface of the body casing and hanging the fan and fan motor, heat exchanger, drain pump, switch box, etc. The top plate is thinned to a thickness not more than a predetermined value. Reinforcement ribs are formed to radially extend from the central portion of the top plate, which supports the fan and motor, to an outer peripheral portion, which supports the heat exchanger. A section between each reinforcement rib is formed flat. The number, cross-sectional shape (shape of drawing), depth, width, etc. of the reinforcement ribs are optimally adjusted. As a result, the construction eliminates the need of forming a large number of auxiliary reinforcement ribs etc. conventionally used. In addition, the rigidity, strength, deflection characteristics, vibration characteristics, etc. of the top plate can be improved to a required level.
Description
Technical field
The present invention relates to a kind of top board structure that pinnacled air conditioner is set.
Background technology
Known have a kind of air conditioner (indoor unit) that is located at the ceiling equal-height position of burying underground or hang.This air conditioner for example has metal top board at the top part of the body housing of chamber type.Air conditioner is at the top board weights such as establishing heat exchanger, fan and fan electromotor, draining pump, switch-box of hanging oneself, and utilizes hanger bolt etc. to hang body housing, thereby air conditioner is embedded in the inside of smallpox board or hangs on the lower surface that is located at the smallpox board.
Figure 13～Figure 15 represents the example of imbedding ceiling board type air conditioner in this air conditioner installed at high place.
In this air conditioner, configuration air conditioner body 1 is equipped with the decoration panel 2 that covers peristome 7 on this air conditioner body 1 above the peristome 7 that forms on the ceiling 70.In the chamber type body housing 3 of air conditioner body 1, be equipped with: the heat exchanger 4 of ring-type roughly; The central part, suction side that is configured in this heat exchanger 4 towards the below and air blow out fan (impeller) 5 and the fan electromotor 9 of side towards the inner peripheral surface of heat exchanger 4; And the plastic bellmouth 6 that is configured in the suction side of fan 5.
Fan 5 for example is made of the centrifugal fan that has multi-disc blade 5b between wheel hub 5a and shroud 5c.Dispose drip tray 8 below heat exchanger 4, forming in the periphery of heat exchanger 4 is free air-blowing to go out path 10.Chamber type body housing 3 for example forms roughly hexagon, comprising: sidewall 31 that is made of heat-insulating material and the top board 32 that covers these sidewall 31 tops.
Two open ends at heat exchanger 4 dispose tube sheet 11 respectively, and the dividing plate 12 by regulation between each tube sheet 11 connects.The top board 32 of body housing 3, tube sheet 11, dividing plate 12 and the switch-box 13 that is installed in bellmouth 6 lower surfaces are all formed by metal sheet.And, for example shown in Figure 14, utilize Screw to be fixed with top board 32 and switch-box 13 respectively in the upper end and the lower end of dividing plate 12.
On the other hand, on bellmouth 6, be formed with the recess 14 that is used to take in switch-box 13.In addition, be formed with switch-box joint portion 15 in the bottom of dividing plate 12.On the end face 14a of recess 14, be formed with switch-box joint portion 15 opening opposing 16 with dividing plate 12.
The upper end of dividing plate 12 devices spaced apart be formed with as installation sheet 17 above the joint portion that combines with top board 32 a pair of.These top installation sheets 17 utilize Screw 18 to be installed on the top board 32 from the below.
The lower end of dividing plate 12 devices spaced apart be formed with as installation sheet 19 below the joint portion that combines with the lower end of each tube sheet 11 a pair of.In addition, in the lower end of dividing plate 12 and below two the pars intermedia of installation sheet 19 by being welded with middle installation sheet 15 as the joint portion that combines with switch-box 13.Below installation sheet 19 utilizes Screw 20 to be fixed on the tube sheet 11 from the below.Middle installation sheet 15 has the base portion 15a as the L word shape of the joint portion that combines with dividing plate 12, is formed with the installation portion 15b that extends from its front end on this base portion 15a downwards.This centre installation sheet 15 installation portion 15b utilize under from opening 16 in the face of the state in the recess 14 Screw 21 from below be fixed on the end face 13a of switch-box 13.
Draining pump 22 and float switch 23 are configured in the draining pump resettlement section 24, and draining pump resettlement section 24 is separated by dividing plate 25.Switch-box 13 is covered by lid 26.
On top board 32, be formed with the central portion 33 that is used for supports fan 5 and fan electromotor 9 and be used to support the roughly peripheral part 35 of the heat exchanger 4 of ring-type, and be formed with from the many main reinforced ribs 32a of this central portion 33 to peripheral part 35 radial extensions.Main reinforced ribs 32a caves in downwards from top board 32, and its width and the degree of depth are set at the value of regulation.And, in the heat exchanger supports portion that is positioned at these main reinforced ribs 32a outsides, be formed with a plurality of stage portion 32b that the degree of depth of depression is downwards set lessly.
And, substantially rigid, intensity, flexural property, the vibration characteristics of top board 32 is set in needed level by these main reinforced ribs 32a.
On the other hand, at the outer circumferential side of top board 32, because the mutual interval of main reinforced ribs 32a broadens, so deficiencies such as the rigidity of this top board 32, intensity correspondingly.
Therefore, as shown in figure 15, adjacently between many main reinforced ribs 32a be formed with a plurality of secondary reinforced ribs 34.Secondary reinforced ribs 34 presumptive magnitudes of load etc. form the shape and the size of expectation.
And, by main reinforced ribs 32a, stage portion 32b, secondary reinforced ribs 34, when the design air conditioner, the natural bow that makes top board 32 is below certain value, and the resonance for fear of the rotation of fan electromotor 9 causes maintains more than the certain value intrinsic frequency of top board 32.
In addition, also be formed with reinforced ribs 33a in the inboard of the support portion of the fan 5 of the central portion 33 that is positioned at top board 32 and fan electromotor 9.The flat shape of reinforced ribs 33a forms general triangular.. utilize this reinforced ribs 33a to improve rigidity, intensity, flexural property, the vibration characteristics of the support portion of fan 5 and fan electromotor 9.
Be formed with circular groove respectively by the fan 5 of this reinforced ribs 33a reinforcement and support portion each corner part of fan electromotor 9 on its base and summit.In addition, be formed with installation portion a, b, the c of fan electromotor 9 respectively in the central authorities of each groove.And installation component 9m by having absorbing on installation portion a, the b of fan electromotor 9, c and installing rack 9b hang and are provided with fan electromotor 9.Thus, fan 5 also rotatably is supported on installation portion a, b, the c of said fans motor 9 by motor shaft 9a.
Patent documentation 1: Japanese patent laid-open 11-201496 communique
But, recently thinking that most the whole bag of tricks realizes that the cost of above-mentioned this air conditioner reduces, top board 32 is no exception.
As the method that reduces cost at top board 32, for example expect will existing top board the whole attenuate of thickness of slab (for example 0.8mm) (for example about 0.7～0.6mm) reducing fee of material, and improve processability when forming rib etc.
But the problem that exist this moment is: the rigidity of top board 32 and intensity reduce, and how to tackle the vibration of top board 32 when drive fan 5.
Thinly then can reduce fee of material if the thickness of slab of top board 32 formed than existing.In addition, the sheet material easy deformation, required applied pressure in the time of can reducing drawing is so also can improve processability.
But in fact if attenuate top board 32 is then compared with existing structure, the natural bow amount increases, and along with the rotation of fan electromotor 9, one time intrinsic frequency reduces, and therefore, can not satisfy the design basis with the existing structure par.
In addition, existing top board 32 has a large amount of reinforced ribs, and the shape of these reinforced ribs is also very complicated, and therefore, the cost of the metal pattern when not only carrying out the punch process of top board 32 rises, and is easy to generate fold, be full of cracks, warpage etc.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of when comprising drive fan the characteristic of top board at the interior top board structure of realizing slimming and can obtaining the air conditioner installed at high place of required rigidity, intensity, vibration characteristics.
To achieve these goals, in first form of the present invention, air conditioner comprises: the body housing of taking in fan and fan electromotor, heat exchanger, draining pump, switch-box; And be configured in this body housing end face, hang the top board of establishing fan and fan electromotor, heat exchanger, draining pump, switch-box, this air conditioner top board structure is characterised in that, many reinforced ribs have been extended to form from the central portion of the described top board that supports described fan electromotor to the peripheral part of this top board that supports described heat exchanger is radial, and form the plane between each reinforced ribs, be formed with stage portion being positioned in the heat exchanger supports portion of reinforced ribs outer circumferential side, the cup depth of described stage portion is configured to littler than the cup depth of described reinforced ribs.
Adopt the top board structure of this air conditioner installed at high place, even the thickness ratio prior art of top board is thin, by the radical of many reinforced ribs and cross sectional shape (tension shape), the degree of depth, width etc. are adjusted to the best, also can not need form many complex-shaped secondary reinforced ribs of the prior art.And the rigidity, intensity, flexural property, vibration characteristics that also can improve top board etc. makes it reach required level.
Therefore, compare with the situation of a large amount of secondary reinforced ribs of combination, excellent in workability, the structure of stamped metal mould is also simple, so also can not produce the strain after the processing, unwanted distortion, be full of cracks, warpage etc.
And, but the thickness of slab of attenuate top board and can improve processability, thus correspondingly can reduce product cost.
And, can realize being used for the correct location of heat exchanger supports on top board.In addition, heat exchanger is supported on the position behind this location reliably, thereby its holding state is more stable.The result is also to improve the vibration characteristics of top board.In addition, because this stage portion can improve the intensity of the width of reinforced ribs, so also can further improve the flexural property of top board.
In above-mentioned air conditioner, be preferably in the fan electromotor support portion that is positioned at the top board central portion and be provided with reinforced ribs.At this moment, also can improve rigidity, intensity, the vibration characteristics of the fan electromotor support portion that is positioned at the top board central portion.
In above-mentioned air conditioner, the thickness of slab of top board is preferably in more than the 0.6mm and less than 0.8mm.At this moment, the thin more then material cost of the thickness of slab of top board is low more, and drawing is also easy more carries out.
But the intensity of top board, rigidity can descend, and flexural property, vibration characteristics worsen on the contrary.In order to tackle this situation, though the reinforced ribs of above-mentioned formation is very effective, only depend on this reinforced ribs limited after all, the thickness of slab that need make top board is greater than specific thickness.
Consider the relation of the effect of the thickness of slab of existing product and above-mentioned reinforced ribs, it is above and less than 0.8mm that the thickness of slab of top board of can reduce material cost, improve processability, guaranteeing the appropriateness of required quality parameter is preferably 0.6mm.
Therefore, adopt the top board structure of air conditioner installed at high place of the present invention, can realize slimming, the cost degradation of top board, and can realize its stable rigidity of support, support strength, low noise properties.
Description of drawings
Fig. 1 is the upward view of structure (being provided with the state of heat exchanger) of top plate portion of the air conditioner of expression preferred embodiment of the present invention.
Fig. 2 is the upward view of structure (state of heat exchanger is not set) of the top plate portion of expression air conditioner.
Fig. 3 is the front view of top plate portion.
Fig. 4 is the amplification view along 4-4 lines of Fig. 2.
Fig. 5 is expression as the amplification view along 5-5 lines of Fig. 2 of the formation of the reinforced ribs of top plate portion major part.
Fig. 6 is the upward view of expression with the existing structure of models of the specification framework making identical with the top plate portion of Fig. 1.
Fig. 7 is the chart of relation of the mounting means of the expression maximum defluxion of top board and thickness of slab and heat exchanger.
Fig. 8 is the chart of relation of the mounting means of the expression resonance speed of top board and thickness of slab and heat exchanger.
Fig. 9 is the chart of relation of the degree of depth of expression maximum defluxion of top board and secondary reinforced ribs.
Figure 10 is the chart of relation of the degree of depth of expression resonance speed of top board and secondary reinforced ribs.
Figure 11 is the chart of relation of the degree of depth of expression maximum defluxion of top board and main reinforced ribs.
Figure 12 is the chart of relation of the degree of depth of expression resonance speed of top board and main reinforced ribs.
Figure 13 is the central longitudinal sectional view that the integral body of the existing air conditioner of expression constitutes, and the cross section of the top plate portion among this figure is equivalent to the cross section of 13-13 lines among Figure 15.
Figure 14 unloads the back from the observed upward view of downside with the decoration panel of air conditioner shown in Figure 13 and body housing.
Figure 15 is the exploded perspective view that the installation of top plate portion and the bellmouth and the switch-box of expression air conditioner shown in Figure 13 concerns.
The specific embodiment
Fig. 1～Fig. 5 represents the top board structure of the air conditioner installed at high place of preferred embodiment of the present invention.
The top board 32 of present embodiment be applied in the essentially identical body housing 3 (with reference to Fig. 3) of imbedding ceiling board type air conditioner (indoor unit) of the prior art example of Figure 13 of having narrated～shown in Figure 15 on.
The thickness of slab D of this top board 32
4Thinner than existing 0.8mm, form about 0.7mm, as shown in Figures 1 and 2, the shape of the chamber type body housing 3 of the shape of top board 32 and this air conditioner forms the summary hexagon accordingly.Form the cross section that is useful on the upper end periphery that embeds body housing 3 in the periphery of top board 32 and be the hook-shaped 32c of edge portion.
On top board 32, be formed with: be used to support Figure 13～fan 5 shown in Figure 15 and the central portion 33 of fan electromotor 9 and be used to support the roughly peripheral part 35 of the heat exchanger 4 of ring-type, and be formed with from the many reinforced ribs 32a of this central portion 33 to peripheral part 35 radial extensions.As Fig. 4 and shown in Figure 5, each reinforced ribs 32a forms by top board 32 is caved in downwards, and its cross sectional shape forms trapezoidal.In addition, to be set at bottom width be W to each reinforced ribs 32a
1, upper end side width be W
2, the degree of depth is D
2, the inclination angle is θ
2, form the plane between each reinforced ribs 32a.And, be formed with stage portion 32b in the outer circumference end of each reinforced ribs 32a and in the support portion of heat exchanger 4.The depth D that each stage portion 32b caves in downwards
3Be set at than above-mentioned D
2Little given size.
In addition, also being formed with the degree of depth on the support portion of the fan 5 of the central portion 33 that is positioned at top board 32 and fan electromotor 9 is D
1Reinforced ribs 33a (D
1=D
2).That is, be formed on the depth D of the reinforced ribs 33a of this support portion
1Depth D with above-mentioned reinforced ribs 32a
2Equate.This reinforced ribs 33a enters respectively between the support portion a～e that can carry out supported at three point and four point-supported five place's fan electromotors, and with each support portion a～e of fan electromotor 9 in meet (with reference to Fig. 1 and Fig. 2).
And, can effectively improve rigidity, intensity, flexural property, the vibration characteristics of the support portion of fan 5 and fan electromotor 9 by this reinforced ribs 33a.
In addition, identical with the prior art example as shown in Figure 1, weights such as heat exchanger 4, fan 5 and fan electromotor 9, draining pump 22, switch-box 23 are installed on the top board 32 of present embodiment.
As mentioned above, in the present embodiment, extended to form many reinforced ribs 32a from the central portion 33 of the top board 32 of supports fan 5 and fan electromotor 9 to the peripheral part 35 of the top board 32 that supports heat exchanger 4 is radial, and formed the plane between these reinforced ribs 32a.
The result is, even the thickness of slab of top board 32 is formed thinner than existing, but by the radical of many reinforced ribs 32a, cross sectional shape (tension shape), the degree of depth, width etc. are adjusted to the best, then do not need to form in addition a large amount of secondary reinforced ribs 34 etc.In addition, also the rigidity of top board 32, intensity, flexural property, vibration characteristics etc. can be brought up to required level.
Therefore, compare with the situation of a large amount of secondary reinforced ribs 34 grades of combination, excellent in workability, the structure of diel is also simple, so can not produce the strain after the processing, unwanted distortion, be full of cracks, warpage etc.
In addition, but because the thickness of slab of attenuate top board 32 and can improve processability, thereby correspondingly can reduce product cost.
In addition, in this constitutes, on the support portion of the heat exchanger 4 that is positioned at above-mentioned reinforced ribs 32a outer circumferential side, be formed with stage portion 32b.
Therefore, when being supported on heat exchanger 4 on the top board 32, can realize being used for heat exchanger 4 is supported on correct location on this top board 32.In addition, heat exchanger 4 is supported under the state that is fastened on the stage portion 32b reliably, thereby its holding state is more stable.
The result is also further to improve the vibration characteristics of top board 32.
In addition, because stage portion 32b can improve the intensity of the width of reinforced ribs 32a, so can further improve the flexural property of top board 32.
And, in above formation, also be formed with reinforced ribs 32a at the periphery of the support portion a～e of the fan 5 of the central portion 33 that is positioned at top board 32 and fan electromotor 9.Therefore, also can improve rigidity, intensity, the vibration characteristics of the support portion of fan 5 and fan electromotor 9 at the central portion 33 of top board 32.
In addition, in the present embodiment, for example the thickness of slab of top board 32 is preferably in more than the 0.6mm and less than 0.8mm.
The thin more then material cost of the thickness of slab of top board 32 is low more, and drawing is also easy more carries out.
But the intensity of top board 32, rigidity can descend, and flexural property, vibration characteristics worsen on the contrary.In order to tackle this situation, though the reinforced ribs 32a of above-mentioned formation is very effective, only depend on reinforced ribs 32a limited after all, the thickness of slab that need make top board 32 is greater than specific thickness.
It is above and less than 0.8mm that the relation of the thickness of slab (0.8mm) of considering existing product and the effect of above-mentioned reinforced ribs 32a, the thickness of slab of top board 32 of can reduce material cost, improve processability, guaranteeing the appropriateness of required quality parameter are preferably 0.6mm.
Therefore, adopt the top board structure of the air conditioner installed at high place of present embodiment, can realize slimming as much as possible, the cost degradation of top board 32, and can realize its stable rigidity of support, support strength, low noise properties.
(embodiment)
For reality is confirmed above action effect, is promptly influenced the configuration, the degree of depth, length etc. of the reinforced ribs 32a of top board 32 characteristics, for example as shown in Figure 6, with the specification (support portion of thickness of slab, shape, fan 5 and fan electromotor 9) identical with the top board 32 of present embodiment shown in Figure 2, the top board 32 of making and Figure 13～prior art example same structure shown in Figure 15 (having main reinforced ribs 32a, secondary reinforced ribs 34) is analyzed separately intensity and vibration.In this analysis, adopted the finite element method analysis (EFM analysis) of one of approximate analysis method of using as the distortion and the stress of analytical structure thing.In addition, in this analysis, use finite element analysis software (EDF company produces, I-DEAS MS9m2 Model Solution).
(1) analytical model
In the air conditioner of air conditioner embodiment illustrated in fig. 2 and prior art example shown in Figure 6, all with the housing feature modelization of top board 32 as four nodes, to be installed in each weight such as heat exchanger 4, fan 5 and fan electromotor 9 on the top board 32, draining pump 22, switch-box 13 as the lumped mass feature modelization, and with the combination of top board 32 and weight as the rigid body feature modelization.
Among Fig. 2, Fig. 6, some A～E represents the installation site of heat exchanger 4, and support portion a～e represents the installation site of fan 5 and fan electromotor 9.
Draining pump 22 is fixed on the heat exchanger 4, by the installation site of heat exchanger 4, promptly put A～E and act on the top board 32 as load.
Switch-box 13 also is fixed on the bellmouth 6, and therefore the load that acts on the top board 32 by its installation site is not clear.
On the other hand, the installation method of installing on top board 32 as heat exchanger 4 and fan electromotor 9 has following dual mode, and each method of heat exchanger 4 and fan electromotor 9 is studied.
The occasion of＜heat exchanger 4 〉
(first mode)
Install at some A in Fig. 2, Fig. 6, this three place of B, C.
(second mode)
Some A in Fig. 2, Fig. 6, B, D, E install this everywhere.
The occasion of＜fan electromotor 9 〉
(first mode)
Support portion a, b in Fig. 2, Fig. 6, c install at this three place.
(second mode)
Some a in Fig. 2, Fig. 6, b, d, e install this everywhere.
(2) analytical sample
2-1) air conditioner of present embodiment shown in Figure 2
Thickness of slab D
4Be 0.7mm, the depth D of reinforced ribs 32a
2Be 8.8～12.8mm
2-2) air conditioner of prior art example shown in Figure 6
＜sample 1 〉
Thickness of slab D
4Depth D for 0.8mm, main reinforced ribs 32a
2Depth D for 8.8mm, secondary reinforced ribs 34
5 Top board 32 for 8.8mm
＜sample 2 〉
Thickness of slab D
4Depth D for 0.7mm, main reinforced ribs 32a
2Depth D for 8.8mm, secondary reinforced ribs 34
5 Top board 32 for 8.8mm
＜sample 3 〉
Thickness of slab D
4Depth D for 0.6mm, main reinforced ribs 32a
2Depth D for 8.8mm, secondary reinforced ribs 34
5 Top board 32 for 8.8mm
(3) analytical method
Under the state that the periphery of each top board 32 that above-mentioned each weight will be installed is completely fixed, carry out the dynamic analysis and the static analysis of each top board 32.
In static analysis, only consider the deadweight of top board 32 and each weight, in dynamic analysis, do not consider the moment of inertia of each weight.In addition, owing to act on the part by weight W of the switch-box 13 on the top board 32
aNot clear, so make the quality and position of centre of gravity (acting on the part by weight of the switch-box 13 on the top board 32) W of each weight
aBetween 25.0%～100%, change.The quality and the position of centre of gravity of each weight are as shown in table 1.
The quality of＜each weight and position of centre of gravity 〉
In addition, the material as each top board 32 uses the material shown in the table 2.
＜material property value 〉
Table 2:
| The name of an article | Material | Young's modulus (kgf/mm 2) | Poisson's ratio | Density (kgfs 2/mm 4) |
| Steel | SECD-DKA | 21078.7 | 0.29 | 7.97×10 -10 |
(plated steel sheets of SECD-DKA:JIS G 3313 regulations)
Evaluation of result is with existing top board 32 (thickness of slab D shown in Figure 6
4=0.8mm) result carries out for benchmark.Use the maximum defluxion (mm) and the resonance speed (rpm) of top board 32 as assessment item.Maximum Mises stress does not use as assessment item, only is used for reference.This is because maximum Mises stress is the cause that produces near the installation portion (or it) as the stress singular point.In addition, so-called Mises stress is meant the typical equivalent stress that the value in the triaxial stress field and simple stress value (for example data value that obtains by material experiment) are used when comparing.
(4) analysis result
Obtain following analysis result after analyzing as described above.
In addition, following evaluation of result is that the prior art example with the Fig. 6 shown in the table 3 is that benchmark carries out.
The analysis result of the prior art example of＜Fig. 6 (existing top board 32) 〉
Table 3:
| Thickness of slab (mm) | Maximum defluxion (mm) | Maximum Mises stress (kgf/mm 2) | Resonance speed (rpm) |
| 0.8 | 1.30 | 8.70 | 742.0 |
Mounting means, thickness of slab D because of heat exchanger 4
4, act on the part by weight W of the switch-box 13 on the top board 32
aDifference and the variation of maximum defluxion, maximum Mises stress and the resonance speed of the top board 32 that causes shown in table 4 and table 5.In addition, the number of times shown in the table 5 is represented the number of times of intrinsic frequency.In addition, thickness of slab D
4And the part by weight W of switch-box 13
aTo the influence of maximum defluxion and resonance speed as shown in Figures 7 and 8.Thus, draw following conclusion.
4-1) in second mode of heat exchanger 4, the maximum defluxion of top board 32 is compared during with first mode almost and is not changed, but resonance speed height during obviously than first mode.Can find out obviously that from this result second mode is preferable.Therefore, use second mode in the analysis below.
4-2) make the part by weight W of switch-box 13
aThe occasion that between 25.0%～100.0%, changes, when adopting first mode, the maximum defluxion of top board 32 increases 4.0% approximately, and consequently, the rigidity of this top board 32 descends.In addition, resonance speed descends 14.0% approximately, and consequently, the characteristic of this top board 32 rises.On the other hand, in second mode, maximum defluxion increases 3.0% approximately, and its increase amplitude is littler than above-mentioned first mode.In addition, resonance speed also only descends about 2.0%.Which kind of occasion no matter, W
aInfluence to top board 32 characteristics is all limit, in the analysis below with W
aBe made as 50.0%.
4-3) consequently, if thickness of slab D
4Attenuation, then the maximum defluxion of top board 32 significantly rises, and resonance speed declines to a great extent.In order to ensure the characteristic (with reference to table 3) identical, infer the thickness of slab D of top board 32 with above-mentioned existing top board 32
1Must be more than 0.8mm.
＜because of acting on the part by weight W of the switch-box 13 on the top board 32
aWith thickness of slab D
4Difference and the maximum defluxion of the top board 32 that causes and the variation of maximum Mises stress
＜because of acting on the part by weight W of the switch-box 13 on the top board 32
aWith thickness of slab D
4Difference and the variation of the resonance speed that causes
(5) influence of the mounting means of the weight of fan 5 and fan electromotor 9 (when the mounting means of heat exchanger 4 is second mode)
In the analysis below, suppose that the mounting means as heat exchanger 4 adopts second mode, act on the part by weight W of the switch-box 13 on the top board 32
aBe 50.0%.
The weight of fan 5 is relieved to the occasion of 1.960kgf from 2.370kgf, and the maximum defluxion of top board 32 and resonance speed were respectively shown in table 6 and table 7 when the mounting means of fan electromotor 9 changed to second mode from first mode.Thus, draw following conclusion.
5-1) when alleviating fan 5, the maximum defluxion of top board 32 reduces, and the resonance speed rising, so the characteristic of this top board 32 improves.
5-2) when the mounting means as fan electromotor 9 adopts second mode, to compare with first mode, the maximum defluxion of top board 32 reduces, and resonance speed also rises, thus the raising of the characteristic of top board 32, but its effect is limited.
(mounting means of heat exchanger 4 is second mode, W in the variation of maximum defluxion, maximum Mises stress and the resonance speed of＜the top board 32 that causes because of varying in weight of fan 5
a=50.0%, the mounting means of fan electromotor 9 is second mode) 〉
＜(mounting means of heat exchanger 4 is second mode, W because of the variation of maximum defluxion, maximum Mises stress and the resonance speed of the different top boards 32 that cause in the installation position of fan electromotor 9
a=50.0%, fan weight is 2.370kgf) 〉
5-3) thickness of slab D
4Attenuate be the top board 32 of 0.7mm in order to keep and existing top board 32 essentially identical characteristics, need make the shape of the reinforced ribs 32a that is configured on the top board 32 reach best (with reference to table 6).
In this analysis, radial rib shown in Figure 6 is called main reinforced ribs 32a, the rib that is clipped between this main reinforced ribs 32a is called secondary reinforced ribs 34.At this, the influence of the characteristic of each rib 32a, 34 pairs of top boards 32 is studied.In addition, used following condition in this analysis.
Act on the part by weight W of the switch-box 13 on the top board 32
aBe 50.0%, the weight of fan 5 is existing 2.370kgf.
The mounting means of fan electromotor 9 is first mode, and the mounting means of heat exchanger 4 is second mode.
Thickness of slab D
4Be 0.7mm.
The degree of depth of main reinforced ribs 32a is the degree of depth of existing 8.8mm and secondary reinforced ribs 34 analysis result such as table 8 and Fig. 9, shown in Figure 10 when changing between 0.0～8.8mm (the existing degree of depth).
Thus, draw following conclusion.
1. the characteristic of top board 32 (maximum defluxion and resonance speed) is obviously different and different because of the degree of depth of secondary reinforced ribs 34.The degree of depth of secondary reinforced ribs 34 is in the scope of 0.0～5.8mm the time, and the characteristic of top board 32 descends along with this degree of depth increases then, but when this depth ratio 5.8mm was dark, then the reduction of the characteristic of top board 32 diminished.In addition, when the degree of depth of secondary reinforced ribs 34 is 0.0mm, does not promptly have secondary reinforced ribs 34 and when forming the plane between the main reinforced ribs 32a, it is minimum that the maximum defluxion of top board 32 reaches, it is maximum that resonance speed reaches.
2. though can think that the degree of depth that makes secondary reinforced ribs 34 increases to when bigger than existing 8.8mm, the characteristic of top board 32 is compared and can be increased with the situation that does not have secondary reinforced ribs 34, but because the setting of heat exchanger 4 and the restriction of sheet metal processing aspect do not wish to form dark secondary reinforced ribs 34.In the scope of 0.0～8.8mm, show the top board that does not have secondary reinforced ribs 34 (the thickness of slab D of the most excellent characteristic
4=0.7mm) 32 with existing top board (D shown in Figure 6
4=0.8mm) 32 compare, have essentially identical maximum defluxion (1.30mm → 1.38mm) and higher resonance speed (742.0rpm → 902.0rpm).
3. therefore, do not have secondary reinforced ribs 34 and the top board 32 that forms the plane between each main reinforced ribs 32a is not only shown excellent characteristic, and the processing that is shaped is also easy, can realize that material reduces that the cost that brings reduces and the raising of product processing quality.
5-4) under the situation that does not have secondary reinforced ribs 34, make the depth D of main reinforced ribs 32a
2Analysis result during variation such as table 9 and Figure 11, shown in Figure 12.The conclusion that obtains is as described below.
1. along with the intensification of main reinforced ribs 32a, the characteristic of top board 32 significantly improves, but the raising rate reduces gradually.
2. main reinforced ribs 32a is very big to the influence of the characteristic of top board 32.
＜because of the variation (not having secondary reinforced ribs 34) of maximum defluxion, maximum Mises stress and the resonance speed of the different top boards 32 that cause of the degree of depth of main reinforced ribs 32a 〉
Claims (3)
1, a kind of top board structure of air conditioner installed at high place, this air conditioner comprises: the body housing of taking in fan and fan electromotor, heat exchanger, draining pump, switch-box; And be configured in this body housing end face, hang the top board of establishing described fan and fan electromotor, heat exchanger, draining pump, switch-box,
It is characterized in that, on described top board, be formed with central portion that is used for the supports fan motor and the peripheral part that is used to support described heat exchanger, and be formed with from the many piece reinforced ribs of this central portion, form the plane between each reinforced ribs to the radial extension of described peripheral part
On the support portion of the described heat exchanger that is positioned at described reinforced ribs periphery, be formed with stage portion,
The cup depth of described stage portion is configured to littler than the cup depth of described reinforced ribs.
2, the top board structure of air conditioner installed at high place as claimed in claim 1 is characterized in that, the support portion that is positioned at the described fan electromotor of described top board central portion is provided with described reinforced ribs.
3, the top board structure of air conditioner installed at high place as claimed in claim 1 or 2 is characterized in that, the thickness of slab of described top board is more than 0.6mm and less than 0.8mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004179871A JP2006003011A (en) | 2004-06-17 | 2004-06-17 | Top plate structure of high altitude installation type air conditioner |
| JP179871/2004 | 2004-06-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1957209A CN1957209A (en) | 2007-05-02 |
| CN100483034C true CN100483034C (en) | 2009-04-29 |
Family
ID=35509777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800170393A Active CN100483034C (en) | 2004-06-17 | 2005-06-15 | Top plate structure for air conditioner installed at high place |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1775518B1 (en) |
| JP (1) | JP2006003011A (en) |
| CN (1) | CN100483034C (en) |
| WO (1) | WO2005124238A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100867467B1 (en) * | 2006-01-13 | 2008-11-10 | 엘지전자 주식회사 | Vibration damping structure for air conditioner |
| JP4884781B2 (en) * | 2006-01-17 | 2012-02-29 | 三菱重工業株式会社 | Cabinet for air conditioner and air conditioner using the same |
| JP4582818B2 (en) * | 2006-04-28 | 2010-11-17 | 東芝キヤリア株式会社 | Indoor unit of air conditioner |
| WO2008154701A1 (en) * | 2007-06-20 | 2008-12-24 | Clipsal Australia Pty Ltd | Fan and grille assembly |
| JP6323143B2 (en) * | 2014-04-22 | 2018-05-16 | 新日鐵住金株式会社 | Indoor unit top plate |
| KR101529223B1 (en) * | 2014-12-31 | 2015-06-16 | 엘지전자 주식회사 | Air conditioner and Control method of the same |
| KR102396941B1 (en) | 2015-08-13 | 2022-05-13 | 엘지전자 주식회사 | Indoor unit for air conditoiner |
| KR102201289B1 (en) * | 2018-11-06 | 2021-01-08 | 엘지전자 주식회사 | Indoor Unit for Air Conditioner |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2956675B2 (en) | 1998-01-16 | 1999-10-04 | ダイキン工業株式会社 | Air conditioner |
| JP3367607B2 (en) | 2000-11-10 | 2003-01-14 | 株式会社日立製作所 | Air conditioner indoor unit |
-
2004
- 2004-06-17 JP JP2004179871A patent/JP2006003011A/en active Pending
-
2005
- 2005-06-15 WO PCT/JP2005/010961 patent/WO2005124238A1/en active Application Filing
- 2005-06-15 CN CNB2005800170393A patent/CN100483034C/en active Active
- 2005-06-15 EP EP05751179.2A patent/EP1775518B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP1775518B1 (en) | 2018-06-06 |
| WO2005124238A1 (en) | 2005-12-29 |
| CN1957209A (en) | 2007-05-02 |
| EP1775518A1 (en) | 2007-04-18 |
| JP2006003011A (en) | 2006-01-05 |
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