WO2019161695A1

WO2019161695A1 - Air duct assembly and air conditioner

Info

Publication number: WO2019161695A1
Application number: PCT/CN2018/119830
Authority: WO
Inventors: 汪春节; 韩鹏; 王富安; 杨盼
Original assignee: 珠海格力电器股份有限公司
Priority date: 2018-02-26
Filing date: 2018-12-07
Publication date: 2019-08-29
Also published as: CN108361209B; CN108361209A

Abstract

Disclosed are an air duct assembly and an air conditioner. The air duct assembly comprises a bottom housing (10) and an electric motor; and a blade assembly (30) mounted on the bottom housing (10), wherein the blade assembly (30) comprises a blade shaft (32) and cross-flow blades (31) sheathed over the blade shaft (32); the blade shaft (32) extends in the length direction of the bottom housing (10); and one end, close to the electric motor, of the blade shaft (32) is suspended and supported above the bottom housing (10) via a magnetic suspension mechanism (50), and one end, away from the electric motor, of the blade shaft (32) is supported on the bottom housing (10) via a bearing block (70). The blade shaft of one end, close to the electric motor, of the blade assembly is in a suspended state under the action of the magnetic suspension mechanism, which can not only serve the function of supporting the blade assembly to ensure that the blade shaft and an output shaft of the electric motor are always in an aligned state, but also overcome friction noises caused by the cooperation of a support part and the blade shaft.

Description

Air duct assembly and air conditioner

Technical field

The present invention relates to the field of air conditioning technology, and in particular to a duct assembly and an air conditioner.

Background technique

As a commonly used household appliance, air conditioners require flexible assembly of products to meet the requirements of quick assembly in production and easy disassembly and maintenance in later operation. As the core component of the air conditioner - the blades and the motor, the flexibility of the connection between the two directly affects the speed of assembly and disassembly.

The traditional air conditioner blade and motor connection design mainly adopts the following form: the motor shaft extends into the blade shaft, and then the blade shaft and the motor shaft are fastened by fastening screws, so that the motor drives the blade to rotate.

This design is very inconvenient for the separation and disassembly and installation of the blades and the motor, and also causes the difficulty of disassembling the air duct components and the whole machine in the later stage, and separating and repairing the motor and the whole machine. The reason is that once the blade is disconnected from the motor, the blade must be centered with the motor shaft in the docking, and the blade and the motor in the inner core position of the air conditioner need to be manually aligned to remove all the peripheral zeros. Parts such as evaporators are very cumbersome to operate.

Modular air conditioner design is an increasingly mature technology development direction. In the prior art, a modular air conditioner that is easy to disassemble and easy to clean is invented. The core technology of the modular air conditioner is to realize the separation of the vane shaft and the motor shaft, so that the vane can be removed and cleaned together with the air duct components. The main problem of this type of connection to achieve convenient installation in the later stage is the alignment problem of the connecting shaft. Only the structure itself can achieve self-centering, so that the later disassembly and installation can be easily operated. In the early stage, we also proposed a connection structure for the realization of this design. Since the motor side of the fan shaft is supported by a rubber bearing ring, the friction between the blade shaft and the support structure will inevitably generate noise.

Summary of the invention

The main object of the present invention is to provide a duct assembly and an air conditioner, so as to solve the problem that the connecting shaft of the air duct assembly of the prior art is separated from the motor, and the connecting shaft is difficult to be centered, and the blade rotates to drive the blade shaft to be easily rubbed. The problem is ringing.

In order to achieve the above object, according to an aspect of the present invention, a duct assembly includes: a bottom case and a motor; a blade assembly on which the blade assembly is mounted, the blade assembly including a blade shaft and a cross flow fan sleeved on the blade shaft, the blade shaft extending along a length direction of the bottom case, and an end of the blade shaft close to the motor is suspended by a magnetic suspension mechanism Supported on the bottom case, an end of the blade shaft remote from the motor is supported on the bottom case via a bearing housing.

Further, the magnetic suspension mechanism includes: a first magnetic member fixedly disposed at a first end of the bottom case; and a second magnetic member fixedly disposed in the wind An end of the blade assembly proximate the motor, the first magnetic member and the second magnetic member repel each other to suspend the blade shaft.

Further, the first magnetic member is a first magnetic ring.

Further, the second magnetic member is a second magnetic ring fixed on the cross flow fan, and the second magnetic ring is embedded inside the first magnetic ring.

Further, the first magnetic member is integrally formed with the bottom case or fixed on the bottom case by a first fastener, and the second magnetic piece is integrally formed with the cross flow fan or through the second A fastener is secured to the cross flow vane.

Further, a width of the first magnetic member along a length direction of the bottom case is L2, and a width of the second magnetic member along a length direction of the bottom case is L1, and the cross-flow blade leaves The stroke in the longitudinal direction of the bottom case is L3, where L1/2+L3<L2/2.

Further, the air duct assembly further includes a connection assembly, the connection assembly includes: a blade sleeve, the blade sleeve is fixedly disposed on the blade shaft; a motor sleeve, the motor sleeve is fixed The motor bushing is detachably coupled to the fan bushing on an output shaft of the motor.

Further, one of the blade bushing and the motor bushing is provided with teeth, and the other is provided with a tooth groove adapted to the tooth.

Further, the air duct assembly further includes a motor base, and the motor is mounted on the motor base.

According to another aspect of the present invention, an air conditioner is provided, including a duct assembly, which is the air duct assembly described above.

According to the technical solution of the present invention, the blade assembly of the present invention is designed to be close to the end of the motor and has a magnetic suspension mechanism. The function of the magnetic suspension mechanism causes the blade assembly to be in a suspended state near the end of the motor. This not only supports the blade assembly, but also ensures that the blade shaft and the motor output shaft are always in the centering state, and overcomes the frictional noise caused by the cooperation of the support member and the blade shaft.

DRAWINGS

The accompanying drawings, which are incorporated in the claims of the claims In the drawing:

Figure 1 is a schematic front view showing a partial structure of a duct assembly of the present invention;

Figure 2 is a schematic front elevational view of the bottom casing portion of the air duct assembly of the present invention;

Figure 3 is a schematic perspective view showing a first perspective view of a bottom casing portion of the air duct assembly of the present invention;

Figure 4 is a schematic perspective view showing a second perspective view of a bottom casing portion of the air duct assembly of the present invention;

Figure 5 is a schematic perspective view of the bottom case of the air duct assembly of the present invention;

Figure 6 is a schematic perspective view of the blade assembly of the present invention;

Figure 7 is a schematic exploded view of the connection assembly of the present invention;

Fig. 8 is a view schematically showing a motion relationship when the first magnetic member and the second magnetic member of the present invention are assembled.

Wherein, the above figures include the following reference numerals:

10, bottom shell; 30, fan blade assembly; 31, cross-flow fan blade; 32, fan blade; 40, connecting assembly; 41, fan bushing; 42, motor bushing; 43, tooth; 44, cogging 50, magnetic suspension mechanism; 51, first magnetic member; 52, second magnetic member; 60, motor seat; 70, bearing seat.

Detailed ways

It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

It is to be noted that the terminology used herein is for the purpose of describing particular embodiments, and is not intended to limit the exemplary embodiments. As used herein, the singular " " " " " " There are features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or order. It is to be understood that the data so used may be interchanged as appropriate, such that the embodiments of the present application described herein can be implemented, for example, in a sequence other than those illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

For convenience of description, spatially relative terms such as "above", "above", "on top", "above", etc., may be used herein to describe as in the drawings. The spatial positional relationship of one device or feature to other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device described. For example, if the device in the figures is inverted, the device described as "above other devices or configurations" or "above other devices or configurations" will be positioned "below other devices or configurations" or "at Under other devices or configurations." Thus, the exemplary term "above" can include both "over" and "under". The device can also be positioned in other different ways (rotated 90 degrees or at other orientations) and the corresponding description of the space used herein is interpreted accordingly.

After long-term operation, the air conditioner will accumulate a large amount of dust in the air duct, and because of the humid environment inside the air duct system, it provides a powerful environment for the breeding of harmful bacteria, which seriously endangers the health of consumers. Therefore, the present invention proposes that the air duct system can be detached from the whole machine and can be cleaned, and the vane assembly and the bottom shell can be removed and cleaned from the whole machine. The side of the blade assembly on the air duct component near the motor end is supported by the bearing rubber seat assembly, and the bearing rubber seat assembly is assembled to the bottom casing by means of a snap. The support structure of the wind blade has disadvantages: the bearing rubber seat assembly on the wind blade shaft and the bottom shell is a micro clearance fit, and when the wind blade is in operation, the wind blade and the bearing rubber seat assembly may have friction, resulting in abnormal noise, so that The comfort of the whole machine is greatly reduced.

In order to solve the above problems, according to an embodiment of the present invention, a duct assembly is provided. Referring to FIG. 1 to FIG. 8 , the air duct assembly in this embodiment includes a bottom case 10 and a motor (not shown in the drawing). ), the blade assembly, the motor base 60, and the connection assembly 40. Wherein, the motor base 60 is mounted on the first end of the bottom case 10, the motor is mounted on the motor base 60; the blade assembly 30 is mounted on the bottom case 10, and the blade assembly 30 includes the blade shaft 32 and the blade shaft The cross-flow vane 31 on the 32, the vane shaft 32 extends along the length of the bottom shell 10, and the end of the vane shaft 32 close to the motor is suspended and supported by the first end of the bottom shell 10 by the magnetic suspension mechanism 50, and the vane shaft 32 One end away from the motor is supported by the second end of the bottom case 10 through the bearing housing 70; the output shaft of the motor and the vane shaft 32 are detachably connected by the connecting assembly 40.

In actual assembly: when the bottom case 10 has not been assembled to the whole machine, the blade assembly has been pre-installed in the bottom case 10, and the blade shaft 32 is at the support of the bearing block 70 and the magnetic suspension mechanism 50 at both ends of the blade assembly. The central axis position of the air duct is pre-assembled into the air duct component together with other parts; when the air duct component is assembled to the motor base 60, since the central axis position of the air duct component and the motor output shaft position are structurally centered, The blade shaft 32 in the assembled air duct component will automatically be centered with the motor shaft. At this time, the blade assembly is swung in the direction of the motor, and the connecting assembly 40 connects the blade shaft 32 with the motor output shaft. When the blade assembly is moved away from the motor, the connecting assembly 40 is separated, but due to the magnetic suspension mechanism 50 The effect is that the blade assembly is always in suspension near the motor side. In order to achieve the above motion effect, it is ensured that the blade shaft and the motor side are always in a floating state in the two states of separation and connection, and the wind blade shaft is in a coaxial position with the center axis of the same air duct in cooperation with the support structure away from the motor side bearing housing 70.

It can be seen that the blade assembly of the present invention is adjacent to one end of the motor and is provided with a magnetic suspension mechanism 50. The function of the magnetic suspension mechanism 50 causes the blade assembly 32 near the end of the motor to be in a suspended state. This not only supports the blade assembly, but also ensures that the blade shaft 32 and the motor output shaft are always in the centering state, and overcomes the frictional noise caused by the cooperation of the support member and the blade shaft 32.

As shown in FIG. 4 and FIG. 5, the magnetic suspension mechanism 50 of the present embodiment includes a first magnetic member 51 and a second magnetic member 52, wherein the first magnetic member 51 is fixedly disposed at the first end of the bottom case 10; The two magnetic members 52 are fixedly disposed at one end of the blade assembly 30 near the motor, and the first magnetic member 51 and the second magnetic member 52 are mutually repelled to suspend the blade shaft 32. The present invention passes through the first magnetic member 51 and the first The magnetic repulsion of the two magnetic members 52 causes the end of the blade shaft 32 close to the motor to be in a suspended state.

Preferably, the first magnetic member 51 in the embodiment is a first magnetic ring, the second magnetic member 52 is a second magnetic ring fixed on the cross flow fan 31, and the second magnetic ring is embedded inside the first magnetic ring. It is convenient for stable support of the blade assembly.

In the process of the actual processing, the first magnetic member 51 and the bottom case 10 in this embodiment may be integrally formed, or may be fixed on the bottom case 10 by the first fastener, and similarly, the second magnetic member 52 and The cross flow vane 31 may be integrally formed or may be fixed to the cross flow vane 31 by a second fastener. The first fastener and the second fastener in this embodiment may be a structure such as a screw, a pin or a rivet, and any other modifications under the concept of the present invention are within the scope of the present invention.

8, the direction of the arrow in FIG. 8 indicates the direction of movement of the cross-flow vane 31, the width of the first magnetic member 51 along the length of the bottom case 10 is L2, and the length of the second magnetic member 52 along the length of the bottom case 10. The width in the direction is L1, and the stroke of the cross-flow vane 31 along the longitudinal direction of the bottom case 10 is L3, wherein L1/2+L3<L2/2, ensuring that the vane shaft 32 can always be subjected to the first magnetic member 51 and the The two magnetic members 52 are in a suspended state due to mutual repulsion.

1 to 7, the connecting assembly 40 of the present embodiment includes a blade bushing 41 and a motor bushing 42. The blade bushing 41 is fixedly disposed on the blade shaft 32; the motor bushing 42 is fixed. On the output shaft of the motor, the motor bushing 42 is detachably coupled to the vane bushing 41.

One of the blade bushing 41 and the motor bushing 42 is provided with teeth 43 which are provided with a tooth groove 44 adapted to the tooth teeth 43 for facilitating the motor output shaft and the blade shaft 32. It is detachably connected and has a simple structure and is easy to implement.

According to the above embodiment, it is known that the end of the bottom case 10 of the present invention near the motor end is provided with a magnetic suspension mechanism 50 for supporting the blade assembly by magnetic repulsion, and the blade assembly and the motor are connected by the connection assembly 40. The state of the blade assembly on the bottom case 10 is as shown in FIG. 3. On the end side of the bottom case 10 away from the motor, a conventional blade bearing seat 70 is used, and the bearing block 70 is fixed to the bottom case 10 by snapping. To support the blade; the bottom case 10 is supported by the magnetic suspension mechanism 50 near the motor end side.

The first magnetic member 51 and the bottom case 10 on the bottom case 10 can be fixed by injection-molded fixing structure or snap-fit (not shown), and the second magnetic member 52 and the cross-flow fan blade 31 on the cross-flow fan blade 31 can also pass through. The fixed structure or snap-fit of the injection molding is fixed (not shown). In addition, in the present application, in order to enable the air duct components to be detached from the whole machine, the connection assembly 40 is used for connection, and the blade shaft 32 and the motor output shaft are respectively equipped with a blade bushing 41 and a motor bushing 42 for wind. The leaf bushing 41 and the motor bushing 42 are connected by the structure of the tooth 43 and the tooth groove 44. In combination with the magnetic suspension mechanism 50 proposed by the present invention, the blade shaft 32 and the motor output shaft are always in a centered state, so that two The shaft body can be easily separated and connected to realize quick disassembly and installation of the air duct system.

According to another aspect of the present invention, an air conditioner is provided, including a duct assembly, which is the air duct assembly described above. The magnetic levitation technology designed in this paper is applied to the air conditioner, so that the blade shaft and the motor shaft are always in the centering state when connecting and separating, which facilitates the connection and disassembly of the shaft. At the same time, the magnetic levitation technology keeps the connecting part of the blade always in suspension. The state, which greatly reduces the abnormal noise caused by the friction of the parts, and improves the comfort of the whole machine.

From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

The invention is provided with an annular second magnetic member at one end of the blade assembly, and a first magnetic member is designed at a corresponding end of the bottom shell, and the blade assembly is suspended near the motor end by magnetic repulsion, so that the blade shaft and the motor shaft It is always in the centering state during connection and separation, which facilitates the connection and separation of the shaft, and can effectively overcome the problem of abnormal noise caused by friction, greatly reducing the noise of the whole machine and improving the comfort of the whole machine.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A duct assembly characterized by comprising:

Bottom case (10) and motor;

a blade assembly (30) mounted on the bottom casing (10), the blade assembly (30) including a blade shaft (32) and sleeved on the blade shaft (32) a cross flow vane (31), the vane shaft (32) extending along a length direction of the bottom shell (10), and an end of the vane shaft (32) adjacent to the motor passes magnetic A suspension mechanism (50) is suspendedly supported on the bottom casing (10), and an end of the blade shaft (32) remote from the motor is supported on the bottom casing (10) through a bearing housing (70).
The air duct assembly of claim 1 wherein said magnetic suspension mechanism (50) comprises:

a first magnetic member (51), the first magnetic member (51) is fixedly disposed at a first end of the bottom case (10);

a second magnetic member (52) fixedly disposed at an end of the blade assembly (30) adjacent to the motor, the first magnetic member (51) and the second The magnetic members (52) repel each other to suspend the vane shaft (32).
The air duct assembly according to claim 2, wherein said first magnetic member (51) is a first magnetic ring.
The air duct assembly according to claim 3, wherein said second magnetic member (52) is a second magnetic ring fixed to said cross flow vane (31), said second magnetic ring being embedded Inside the first magnetic ring.
The air duct assembly according to claim 2, wherein said first magnetic member (51) is integrally formed with said bottom case (10) or fixed to said bottom case (10) by a first fastener The second magnetic member (52) is integrally formed with the cross flow vane (31) or fixed to the cross flow vane (31) by a second fastener.
The air duct assembly according to any one of claims 2 to 5, wherein a width of the first magnetic member (51) along a length direction of the bottom case (10) is L2, the first The width of the two magnetic members (52) along the length direction of the bottom case (10) is L1, and the stroke of the cross flow fan blades (31) along the length direction of the bottom case (10) is L3, wherein L1 /2+L3<L2/2.
The air duct assembly of claim 1 wherein said air duct assembly further comprises a connection assembly (40), said connection assembly (40) comprising:

a blade bushing (41), the blade bushing (41) is fixedly disposed on the blade shaft (32);

A motor bushing (42) is fixed to an output shaft of the motor, and the motor bushing (42) is detachably coupled to the blade bushing (41).
The air duct assembly according to claim 7, wherein one of said blade bushing (41) and said motor bushing (42) is provided with a tooth (43), the other of which A tooth groove (44) adapted to the tooth (43) is provided thereon.
The air duct assembly of claim 1 wherein said air duct assembly further comprises a motor mount (60) mounted on said motor mount (60).
An air conditioner comprising a duct assembly, characterized in that the duct assembly is the duct assembly according to any one of claims 1 to 9.