CN212481479U - Indoor unit of air conditioner - Google Patents
Indoor unit of air conditioner Download PDFInfo
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- CN212481479U CN212481479U CN202020794500.8U CN202020794500U CN212481479U CN 212481479 U CN212481479 U CN 212481479U CN 202020794500 U CN202020794500 U CN 202020794500U CN 212481479 U CN212481479 U CN 212481479U
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- air conditioner
- indoor unit
- air
- rotating shaft
- driving
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- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 238000003780 insertion Methods 0.000 claims abstract description 21
- 230000037431 insertion Effects 0.000 claims abstract description 21
- 230000013011 mating Effects 0.000 claims description 18
- 238000005299 abrasion Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of air conditioners, and discloses an air conditioner indoor unit, which comprises a shell, an air guide component and a driving device; the shell is provided with an air outlet, the air guide assembly is arranged at the air outlet and used for controlling the air outlet direction, and the air guide assembly comprises a driving blade with a shaft sleeve; the driving device is used for driving the driving blade to rotate, is arranged in the shell and is provided with a rotating shaft, and the rotating shaft comprises an inserting section which is inserted into a shaft hole of the shaft sleeve so as to be in transmission connection with the driving device and the driving blade; the outer wall of the insertion section of the rotating shaft comprises a plurality of matching surfaces distributed along the circumferential direction of the outer wall, and the matching surfaces are inwards recessed; the cross section of the shaft hole is the same as that of the insertion section. Compared with the prior art, the torque transmission structure consisting of the rotating shaft and the shaft sleeve is not easy to wear, long in service life, free of stress concentration and large in torque transmission amount, so that the air conditioner indoor unit has the advantages of long service life, low failure rate, convenience in assembly and the like.
Description
Technical Field
The utility model relates to an air conditioner technical field especially relates to an air conditioner indoor unit.
Background
The air outlet of the indoor unit of the air conditioner is usually provided with a rotatable air guide assembly to adjust the air outlet direction, the air guide assembly is driven by a driving device, and the air guide assembly and the driving device are in transmission connection through a torque transmission structure.
The existing torque transmission structure generally comprises a rotating shaft and a shaft sleeve, wherein the rotating shaft is inserted into a shaft hole of the shaft sleeve, and torque is transmitted between the rotating shaft and the shaft sleeve through a spline or a plurality of matching surfaces. However, both forms have their own disadvantages: the former has limited strength and concentrated stress, and is easy to have the problem of integral failure caused by local damage; the latter has poor abrasion resistance, and particularly when the number of matching surfaces is excessive, the cross sections of the rotating shaft and the shaft hole are close to circular, so that the problem of failure caused by excessive abrasion is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an air conditioner indoor unit that long service life, fault rate are low, the air-out effect is good.
In order to achieve the above object, the present invention provides an air conditioner indoor unit, which comprises:
the air conditioner comprises a shell, a fan and a controller, wherein the shell is provided with an air outlet;
the air guide assembly is arranged at the air outlet and comprises a rotatable driving blade, and the driving blade is provided with a shaft sleeve;
the driving device is arranged in the shell and provided with a rotating shaft, the rotating shaft comprises an insertion section, and the insertion section is inserted into a shaft hole of the shaft sleeve to be in transmission connection with the driving device and the driving blade;
the outer wall of the insertion section comprises a plurality of matching surfaces distributed along the circumferential direction of the insertion section, the matching surfaces are inwards recessed, and the cross section of the shaft hole is the same as that of the insertion section.
In some embodiments of the present application, the mating surface is a concave arc surface.
In some embodiments of the present application, the mating surface is a concave V-fold.
In some embodiments of the present application, the mating surfaces are evenly distributed along a circumference of the plug section.
In some embodiments of the present application, any adjacent two of the mating surfaces are connected to each other.
In some embodiments of the present application, the mating surfaces are the same in shape and size.
In some embodiments of the present application, the front end of the plug section is tapered.
In some embodiments of the present application, the number of the mating surfaces is five or more.
In some embodiments of the present application, the air guiding assembly further includes a rotatable driven blade, and the driven blade is in transmission connection with the driving blade through a connecting rod.
In some embodiments of the present application, the air guide assembly further includes a support plate frame, the driving blade and the driven blade are all rotatably arranged on the support plate frame, and the support plate frame and the shell can be detachably connected.
In some embodiments of the present application, the driving device is disposed at a lower side edge of the air outlet, the air guiding assembly is disposed above the driving device, and the driving blade and the driven blade are vertically disposed.
The utility model provides an air conditioner indoor unit, compared with the prior art, its beneficial effect lies in:
the inwardly recessed fitting surface reduces the inscribed circle of the rotating shaft, so that the thickness of the corner of the rotating shaft is increased under the condition that the circumscribed circle of the rotating shaft is not changed, that is, the limit abrasion loss of the rotating shaft is increased, and correspondingly, the limit abrasion loss of the shaft sleeve is also increased. Therefore, the torque transmission structure consisting of the rotating shaft and the shaft sleeve cannot lose effectiveness due to excessive abrasion when in work, the service life is remarkably prolonged, larger torque can be transmitted, and the wind guide capacity of the wind guide assembly is improved; in addition, compared with a torque transmission structure adopting a spline, the torque transmission structure is uniform in stress and free of stress concentration, and therefore the problem of overall failure caused by local damage can be avoided. Based on this, the utility model provides an air conditioner indoor unit has advantages such as long service life, fault rate are low, the air-out is effectual.
Drawings
Fig. 1 is a schematic structural view of an air conditioner indoor unit according to an embodiment of the present invention;
fig. 2 is an assembly diagram of the rotating shaft and the driving blade according to the embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of a rotating shaft (the fitting surface is a concave arc surface) according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a rotating shaft (the matching surface is a concave V-shaped folded surface) according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the limit wear of a regular hexagonal rotating shaft according to the prior art;
fig. 6 is a schematic view of the limit abrasion loss of the rotating shaft according to the embodiment of the present invention.
In the figure: 1. a housing; 11. an air outlet; 2. an air guide assembly; 21. a driving blade; 211. a shaft sleeve; 2111. a shaft hole; 22. a driven blade; 23. a connecting rod; 24. a support plate frame; 3. a drive device; 31. a rotating shaft; 311. a plug section; 3111. a mating surface.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that in the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application. The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, i.e. a feature defined as "first", "second" may explicitly or implicitly include one or more of such features. Further, unless otherwise indicated, "plurality" means three and more.
It should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The indoor unit of the air conditioner in the application refers to a part comprising an indoor fan and an indoor heat exchanger; the indoor fan is used for sucking air from an air inlet of the indoor unit of the air conditioner and blowing the air out of an air outlet of the indoor unit of the air conditioner after the air flows through the indoor heat exchanger; the indoor heat exchanger may function as a condenser or an evaporator, and the air conditioner may function as a heater in a heating mode when the indoor heat exchanger functions as the condenser, and as a cooler in a cooling mode when the indoor heat exchanger functions as the evaporator.
As shown in fig. 1, an embodiment of the present invention provides an air conditioner indoor unit, which includes a casing 1, a wind guide assembly 2 and a driving device 3; the casing 1 is provided with an air outlet 11, the air guide assembly 2 is arranged at the air outlet 11 and used for controlling the air outlet direction, and comprises a rotatable driving blade 21, and the driving blade 21 is provided with a shaft sleeve 211; the driving device 3 is used for driving the driving blade 21 to rotate, is arranged in the housing 1 and has a rotating shaft 31, the rotating shaft 31 includes an insertion section 311, and the insertion section 311 is inserted into the shaft hole 2111 of the shaft sleeve 211 to connect the driving device 3 and the driving blade 21 in a transmission manner; preferably, the driving device 3 is a motor.
Further, as shown in fig. 2, the outer wall of the plug section 311 of the rotating shaft 31 includes a plurality of mating surfaces 3111 distributed along the circumference thereof, and the mating surfaces 3111 are recessed inward; the cross-sectional shape of the shaft hole 2111 is the same as the cross-sectional shape of the plug section 311. Based on the above structure, the inwardly recessed fitting surface 3111 reduces the inscribed circle of the rotating shaft 31, so that under the condition that the circumscribed circle of the rotating shaft 31 is not changed, the thickness of the corner of the rotating shaft 31 is increased, that is, the limit wear amount of the rotating shaft 31 (the wear amount required for the insertion section 311 being ground into a cylindrical shape) is increased, and correspondingly, the limit wear amount of the shaft sleeve 211 (the wear amount required for the shaft hole 2111 being ground into a circular hole) is also increased.
Compared with the prior art, the torque transmission structure composed of the rotating shaft 31 and the shaft sleeve 211 cannot fail due to excessive abrasion during working, the service life is remarkably prolonged, larger torque can be transmitted, and the wind guiding capacity of the wind guiding component 2 is improved; in addition, compared with a torque transmission structure adopting a spline, the torque transmission structure is uniform in stress and free of stress concentration, and therefore the problem of overall failure caused by local damage can be avoided. Based on this, the utility model provides an air conditioner indoor unit has advantages such as long service life, fault rate are low, the air-out is effectual.
Alternatively, as shown in fig. 3 and 4, in some embodiments, the mating surface 3111 is a concave arc surface or a concave V-shaped folded surface, and any two adjacent mating surfaces 3111 are connected to each other.
Alternatively, as shown in fig. 3 and 4, in some embodiments, the mating surfaces 3111 are uniformly distributed along the circumference of the plug section 311, and the mating surfaces 3111 are identical in shape and size. Thus, the mating surfaces 3111 are uniformly stressed, so that local wear does not occur, and the reliability of the torque transmission structure is further improved.
Optionally, as shown in FIG. 2, in some embodiments, the front end of plug section 311 is tapered to facilitate insertion into axial bore 2111.
Alternatively, as shown in fig. 3 and 4, in some embodiments, the mating surfaces 3111 are provided in five and more. Therefore, the assembly direction of the rotating shaft 31 and the shaft sleeve 211 is limited to a small extent, the inserting section 311 is easy to align when being inserted into the shaft hole 2111, and the assembly difficulty is lower.
In order to make the utility model discloses the beneficial effect of the moment of torsion transmission structure that the embodiment provided can be more popular and understandable, will combine fig. 5 and fig. 6 below, right the utility model provides a moment of torsion transmission structure compares with prior art.
Fig. 5 shows a regular hexagonal shaft 31 of a conventional type, which has a circumscribed circle with a radius D1The radius of the inscribed circle is R1The thickness of the edge angle is T1The ultimate wear amount (shaded portion in the figure) is S1Wherein T is1＝D1–R1，S1And T1In a direct proportional relationship.
Fig. 6 shows a rotating shaft 31 according to an embodiment of the present invention, which has six fitting surfaces 3111 and a circumscribed circle with a radius D2The radius of the inscribed circle is R2The thickness of the edge angle is T2The ultimate wear amount (shaded portion in the figure) is S2Wherein T is2＝D2–R2，S2And T2In a direct proportional relationship.
Obviously, in D1＝D2In the case of (1), R1＞R2Thus, T1＜T2，S1＜S2This shows that, under the same outer diameter condition, the utility model discloses torque transmission structure's pivot 31 that embodiment provided possesses more extreme wear amount than current regular hexagon pivot 31.
Optionally, as shown in fig. 1, in some embodiments, in order to enhance the wind guiding effect, the wind guiding assembly 2 further includes a rotatable driven blade 22, and the driven blade 22 is in transmission connection with the driving blade 21 through a connecting rod 23. Thus, under the driving of the driving device 3, the driving blade 21 and the driven blade 22 can rotate together, so as to achieve the effect of enhancing the wind guiding.
Alternatively, as shown in fig. 1, in some embodiments, to simplify the disassembling and assembling operation, the air guiding assembly 2 further includes a supporting plate frame 24, the driving blade 21 and the driven blade 22 are both rotatably disposed on the supporting plate frame 24, and the supporting plate frame 24 is detachably connected to the housing 1. Based on this, the installation of the air guiding assembly 2 can be completed by only inserting the insertion section 311 of the rotating shaft 31 into the shaft hole 2111 of the shaft sleeve 211 and connecting the supporting plate frame 24 with the housing 1, which is simple, convenient and fast. Similarly, the air guide component 2 is also convenient and quick to disassemble.
Alternatively, as shown in fig. 1, in some embodiments, the driving device 3 is disposed at the lower edge of the air outlet 11, and the rotating shaft 31 is vertically upward; the air guide assembly 2 is arranged above the driving device 3, the driving blade 21 and the driven blade 22 are vertically arranged, and the shaft sleeve 211 is arranged at the bottom of the driving blade 21. Thus, under the driving of the driving device 3, the driving blade 21 and the driven blade 22 can rotate left and right, and the transverse wind sweeping is realized.
To sum up, the embodiment of the present invention provides an air conditioner indoor unit, which comprises an air guide assembly 2 and a driving device 3; the air guide assembly 2 comprises a driving blade 21 with a shaft sleeve 211, the driving device 3 comprises a rotating shaft 31 with an insertion section 311, and the insertion section 311 is inserted into a shaft hole 2111 of the shaft sleeve 211 to be connected with the driving blade 21 and the driving device 3 in a transmission manner; wherein, the outer wall of the plug section 311 includes a plurality of mating surfaces 3111 distributed along the circumference thereof, and the mating surfaces 3111 are recessed inwards, and the cross-sectional shape of the shaft hole 2111 is the same as that of the plug section 311. Compared with the prior art, the torque transmission structure consisting of the rotating shaft 31 and the shaft sleeve 211 is not easy to wear, has long service life, no stress concentration and large torque transmission amount, so that the air conditioner indoor unit has the advantages of long service life, low failure rate, convenient assembly and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. An indoor unit for an air conditioner, comprising:
the air conditioner comprises a shell, a fan and a controller, wherein the shell is provided with an air outlet;
the air guide assembly is arranged at the air outlet and comprises a rotatable driving blade, and the driving blade is provided with a shaft sleeve;
the driving device is arranged in the shell and provided with a rotating shaft, the rotating shaft comprises an insertion section, and the insertion section is inserted into a shaft hole of the shaft sleeve to be in transmission connection with the driving device and the driving blade;
the outer wall of the insertion section comprises a plurality of matching surfaces distributed along the circumferential direction of the insertion section, the matching surfaces are inwards recessed, and the cross section of the shaft hole is the same as that of the insertion section.
2. An indoor unit for an air conditioner according to claim 1, wherein:
the matching surface is an inwards concave cambered surface.
3. An indoor unit for an air conditioner according to claim 1, wherein:
the matching surface is an inwards concave V-shaped folded surface.
4. An indoor unit for an air conditioner according to claim 1, wherein:
the matching surfaces are uniformly distributed along the circumferential direction of the insertion section.
5. An indoor unit for an air conditioner according to claim 1, wherein:
any adjacent two of the mating faces are connected to each other.
6. An indoor unit for an air conditioner according to claim 1, wherein:
the shape and the size of each matching surface are the same.
7. An indoor unit for an air conditioner according to claim 1, wherein:
the front end of the insertion section is conical.
8. An indoor unit for an air conditioner according to claim 1, wherein:
the number of the matching surfaces is five or more.
9. An indoor unit for an air conditioner according to claim 1, wherein:
the air guide assembly further comprises a rotatable driven blade, and the driven blade is in transmission connection with the driving blade through a connecting rod.
10. An indoor unit for an air conditioner according to claim 9, wherein:
the air guide assembly further comprises a supporting plate frame, the driving blades and the driven blades are all rotatably arranged on the supporting plate frame, and the supporting plate frame is detachably connected with the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020794500.8U CN212481479U (en) | 2020-05-13 | 2020-05-13 | Indoor unit of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020794500.8U CN212481479U (en) | 2020-05-13 | 2020-05-13 | Indoor unit of air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN212481479U true CN212481479U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020794500.8U Active CN212481479U (en) | 2020-05-13 | 2020-05-13 | Indoor unit of air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252644A1 (en) * | 2021-06-03 | 2022-12-08 | 青岛海尔空调器有限总公司 | Vertical air conditioner |
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2020
- 2020-05-13 CN CN202020794500.8U patent/CN212481479U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252644A1 (en) * | 2021-06-03 | 2022-12-08 | 青岛海尔空调器有限总公司 | Vertical air conditioner |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: No.1 Haixin Road, Nancun Town, Pingdu City, Qingdao City, Shandong Province Patentee after: Hisense Air Conditioning Co.,Ltd. Country or region after: China Address before: No. 151, Zhuzhou Road, Laoshan District, Qingdao, Shandong Patentee before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. Country or region before: China |