Air conditioner

Abstract

The utility model relates to an air conditioner, which belongs to the technical field of air conditioning equipment and comprises a shell, an indoor heat exchanger, an indoor fan, a motor, a connecting shaft and a fresh air fan. Wherein the indoor heat exchanger is arranged in the shell; the indoor fan is arranged in the shell; the motor is arranged at one end of the indoor fan and drives the indoor fan to rotate; the connecting shaft is coaxially arranged at the end, away from the motor, of the indoor fan. The fresh air fan comprises fresh air fan blades, a hub and a shaft sleeve, and the shaft sleeve and the fresh air fan are coaxially arranged; the hub connects the shaft sleeve with the fresh air fan blades; wherein a counterweight sleeve is inserted into the shaft sleeve, and the connecting shaft is inserted into the counterweight sleeve; the length of the counterweight sleeve is L, the length of the counterweight sleeve located on the side, away from the indoor fan, of the hub is L1, the length of the counterweight sleeve located on the side, facing the indoor fan, of the hub is L2, and the axial length of the fresh air fan is H; 0.5 H < = L, and L1 < = L2 are satisfied.

Description

Technical Field

[0001] This application relates to the technical field of air conditioning equipment, and particularly to an air conditioner. Background Art

[0002] An air conditioner, that is, an air regulator, refers to a device that uses artificial means to adjust and control parameters such as the temperature, humidity, and flow rate of the air in a building or structure. To meet the needs in real life, some air conditioners have a fresh air function, which can transmit outdoor air into the room.

[0003] In the prior art, an air conditioner includes a housing, an indoor fan, an indoor heat exchanger, and a fresh air fan. The outdoor air flow is input into the room through the fresh air fan. The air flow is sent into the room after being heat-exchanged by the indoor heat exchanger through the indoor fan.

[0004] For some air conditioners, considering volume and cost, a motor is used to drive both the indoor fan and the fresh air fan to rotate simultaneously. However, in the prior art, the fresh air fan and the indoor fan of the coaxial fresh air module with a common motor are independent components. When the fresh air fan is fixed to the driving steel shaft of the indoor fan through secondary installation and the axis hole of the fresh air fan directly uses the same material as the fan, due to the processing dimension deviation of the plastic fan axis hole itself and its relatively light self-weight, the assembly gap between the steel shaft and the fan axis hole will cause the fan to be not precisely concentric radially, resulting in deviation. And for the coaxial fresh air module in a series structure form, a small eccentricity of the fresh air fan can cause a serious radial runout. At the lightest, it will generate abnormal noise, and at the worst, the fan will touch the volute and be damaged. In addition, the large radial runout of the fresh air fan will in turn act on the indoor fan of the air conditioner, affecting its operating state and generating abnormal noise. Utility Model Content

[0005] This utility model solves at least one of the technical problems in the related art to a certain extent.

[0006] Therefore, this application aims to provide an air conditioner. Through reasonable ratio, the weight distribution of the counterweight sleeve on both sides of the hub is reasonable, the configuration effect of the counterweight sleeve and the contact fit between the counterweight sleeve and the connecting shaft are increased, the mass center of the fresh air fan is concentrated on the configuration sleeve, and its cooperation with the connecting shaft is beneficial to reducing the axial offset during the high-speed operation of the fresh air fan, ensuring the fresh air fan operates more smoothly, and preventing abnormal noise problems caused by excessive radial runout of the fresh air fan or the indoor fan in the air conditioner.

[0007] To achieve the above object, this utility model provides an air conditioner, including:

[0008] A housing;

[0009] An indoor heat exchanger, which is arranged in the housing;

[0010] An indoor fan, the indoor fan being disposed within the housing;

[0011] A motor, the motor being disposed at one end of the indoor fan, the motor driving the indoor fan to rotate;

[0012] A connecting shaft, the axis of the connecting shaft being collinear with the axis of the indoor fan, and the connecting shaft being disposed at the end of the indoor fan remote from the motor;

[0013] A fresh air fan, the fresh air fan including a fresh fan blade, a hub and a bushing, the axis of the bushing being the axis of the fresh air fan; the hub connecting the bushing to the fresh fan blade;

[0014] Wherein, a counterweight sleeve is disposed within the bushing, and the connecting shaft is disposed within the counterweight sleeve; the length of the counterweight sleeve is L; wherein, the length of the counterweight sleeve on the side of the hub remote from the indoor fan is L1, and the length of the counterweight sleeve on the side of the hub facing the indoor fan is L2; the length of the fresh air fan in the axial direction is H;

[0015] Satisfying 0.5H ≤ L and L1 ≤ L2.

[0016] In the technical solution, through reasonable proportioning, the weight distribution of the counterweight sleeve on both sides of the hub is made reasonable, the configuration effect of the counterweight sleeve and the contact fit between the counterweight sleeve and the connecting shaft are increased, the mass center of the fresh air fan is concentrated on the configuration sleeve, and its cooperation with the connecting shaft is beneficial to reducing the axial offset amount during the high-speed operation of the fresh air fan, ensuring that the fresh air fan operates more smoothly, and preventing abnormal noise problems caused by excessive radial runout of the fresh air fan or the indoor fan in the air conditioner.

[0017] In addition, the present application further provides an air conditioner, which includes:

[0018] A housing;

[0019] An indoor heat exchanger, the indoor heat exchanger being disposed within the housing;

[0020] An indoor fan, the indoor fan being disposed within the housing;

[0021] A motor, the motor being disposed at one end of the indoor fan, the motor driving the indoor fan to rotate;

[0022] A connecting shaft, the axis of the connecting shaft being collinear with the axis of the indoor fan, and the connecting shaft being disposed at the end of the indoor fan remote from the motor;

[0023] A fresh air fan, the fresh air fan including a fresh fan blade, a hub and a bushing, the axis of the bushing being the axis of the fresh air fan; the hub connecting the bushing to the fresh fan blade;

[0024] Wherein, a counterweight sleeve is arranged inside the shaft sleeve, and the connecting shaft is arranged in the counterweight sleeve; the length of the counterweight sleeve is L; wherein, the length of the counterweight sleeve on the side of the hub away from the indoor fan is L1, and the length of the counterweight sleeve on the side of the hub facing the indoor fan is L2; the length in the axial direction of the fresh air fan is H;

[0025] Satisfying 0.5H ≤ L and L2 ≤ 5L1.

[0026] In the technical solution, through reasonable ratio, the weight distribution of the counterweight sleeve on both sides of the hub is made reasonable, the configuration effect of the counterweight sleeve and the contact fit between the counterweight sleeve and the connecting shaft are increased, the mass center of the fresh air fan is concentrated on the configuration sleeve, and its cooperation with the connecting shaft is beneficial to reducing the axial offset during the high-speed operation of the fresh air fan, ensuring that the fresh air fan operates more smoothly, and preventing abnormal noise problems caused by excessive radial runout of the fresh air fan or the indoor fan in the air conditioner.

[0027] In addition, the present application also provides an air conditioner, which includes:

[0028] A housing;

[0029] An indoor heat exchanger, which is arranged inside the housing;

[0030] An indoor fan, which is arranged inside the housing;

[0031] A motor, which is arranged at one end of the indoor fan, and the motor drives the indoor fan to rotate;

[0032] A connecting shaft, the axis of which is collinear with the axis of the indoor fan, and the connecting shaft is arranged at the end of the indoor fan away from the motor;

[0033] A fresh air fan, which includes a fresh fan blade, a hub and a shaft sleeve, and the axis of the shaft sleeve is the axis of the fresh air fan; the hub connects the shaft sleeve and the fresh fan blade;

[0034] Wherein, a counterweight sleeve is arranged inside the shaft sleeve, and the connecting shaft is arranged in the counterweight sleeve; the length of the counterweight sleeve is L; wherein, the length of the counterweight sleeve on the side of the hub away from the indoor fan is L1, and the length of the counterweight sleeve on the side of the hub facing the indoor fan is L2; the length in the axial direction of the fresh air fan is H;

[0035] Satisfying L ≤ H and L1 ≤ L2.

[0036] In the technical solution, through reasonable proportioning, the weight distribution of the counterweight sleeve on both sides of the hub is made reasonable, the configuration effect of the counterweight sleeve and the contact fit between the counterweight sleeve and the connecting shaft are increased, the mass center of the fresh air fan is concentrated on the configuration sleeve, and its fit with the connecting shaft is beneficial to reducing the axial offset during the high-speed operation of the fresh air fan, ensuring that the fresh air fan operates more smoothly, and preventing abnormal noise problems caused by excessive radial runout of the fresh air fan or the indoor fan in the air conditioner.

[0037] In addition, the present application also provides an air conditioner, which includes:

[0038] A housing;

[0039] An indoor heat exchanger, which is arranged in the housing;

[0040] An indoor fan, which is arranged in the housing;

[0041] A motor, which is arranged at one end of the indoor fan, and the motor drives the indoor fan to rotate;

[0042] A connecting shaft, the axis of the connecting shaft is collinear with the axis of the indoor fan, and the connecting shaft is arranged at the end of the indoor fan away from the motor;

[0043] A fresh air fan, the fresh air fan includes a fresh air fan blade, a hub and a shaft sleeve, and the axis of the shaft sleeve is the axis of the fresh air fan; the hub connects the shaft sleeve and the fresh air fan blade;

[0044] Wherein, a counterweight sleeve is arranged in the shaft sleeve, and the connecting shaft is arranged in the counterweight sleeve; the length of the counterweight sleeve is L; wherein, the length of the counterweight sleeve on the side of the hub away from the indoor fan is L1, and the length of the counterweight sleeve on the side of the hub facing the indoor fan is L2; the length of the fresh air fan in the axis direction is H;

[0045] Satisfy, L≤H and L2≤5L1.

[0046] In the technical solution, through reasonable proportioning, the weight distribution of the counterweight sleeve on both sides of the hub is made reasonable, the configuration effect of the counterweight sleeve and the contact fit between the counterweight sleeve and the connecting shaft are increased, the mass center of the fresh air fan is concentrated on the configuration sleeve, and its fit with the connecting shaft is beneficial to reducing the axial offset during the high-speed operation of the fresh air fan, ensuring that the fresh air fan operates more smoothly, and preventing abnormal noise problems caused by excessive radial runout of the fresh air fan or the indoor fan in the air conditioner.

[0047] In some embodiments of the present application, the two ends of the counterweight sleeve are flush with the two ends of the shaft sleeve.

[0048] In the technical solution, through this design, it is ensured that the center of mass of the fresh air fan is distributed on the counterweight sleeve, ensuring the dynamic balance when the fresh air fan rotates, reducing the axial offset during the high-speed operation of the fresh air fan, and thus reducing vibration.

[0049] In some embodiments of the present application, the new fan blades are circularly distributed with the shaft sleeve as the axis; the length of the new fan blades along the axial direction of the shaft sleeve is the axial length of the fresh air fan.

[0050] In some embodiments of the present application, both ends of the counterweight sleeve do not exceed the two ends in the length direction of the new fan blades.

[0051] In the technical solution, it is ensured that the center of mass of the fresh air fan is distributed on the counterweight sleeve, ensuring the dynamic balance when the fresh air fan rotates, reducing the axial offset during the high-speed operation of the fresh air fan, and thus reducing vibration.

[0052] In some embodiments of the present application, a clamping member and a clamping groove are respectively provided on the counterweight sleeve and the shaft sleeve; the connection between the counterweight sleeve and the shaft sleeve is realized through the clamping of the clamping member and the clamping groove.

[0053] In the technical solution, through the connection of the clamping member and the clamping groove, the installation of the counterweight sleeve is facilitated and the installation efficiency is improved.

[0054] In some embodiments of the present application, at least one planar first limiting side is provided on the peripheral wall of the connecting shaft; a corresponding number and corresponding positions of second limiting sides are provided on the counterweight sleeve; after the connecting shaft is inserted into the counterweight sleeve, the first limiting side fits with the second limiting side.

[0055] In the technical solution, through the cooperation of the first limiting side and the second limiting side, it is ensured that the counterweight sleeve and the connecting shaft rotate synchronously. Ensure the synchronous rotation of the fresh air fan and the indoor fan.

[0056] In some embodiments of the present application, a threaded section is provided at one end of the connecting shaft away from the indoor fan; a nut is threadedly connected to the threaded section, and the nut abuts against one end of the shaft sleeve away from the indoor fan.

[0057] In the technical solution, the nut prevents the fresh air fan and the counterweight sleeve from detaching from the connecting shaft. This design provides a simple and reliable fixing method, enhances the connection strength between the fresh air fan and the indoor fan, and improves the overall stability of the system.

[0058] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0059] Figure 1It is a schematic diagram of the overall structure of an air conditioner according to an embodiment of the present application;

[0060] Figure 2 It is a schematic diagram of the internal structure of an air conditioner according to an embodiment of the present application;

[0061] Figure 3 It is a side view of the internal structure of an air conditioner according to an embodiment of the present application;

[0062] Figure 4 is Figure 3 a cross-sectional view in the A-A direction in

[0063] Figure 5 It is a schematic diagram of the internal structure of an air conditioner according to an embodiment of the present application;

[0064] Figure 6 It is a schematic diagram of the internal structure of an air conditioner according to an embodiment of the present application;

[0065] Figure 7 It is a schematic diagram of a partial structure of an air conditioner according to an embodiment of the present application;

[0066] Figure 8 It is a schematic diagram of a partial structure of an air conditioner according to an embodiment of the present application;

[0067] Figure 9 It is a schematic diagram of a local structure of an air conditioner according to an embodiment of the present application;

[0068] Figure 10 It is a schematic diagram of a partial structure of an air conditioner according to an embodiment of the present application;

[0069] Figure 11 It is a schematic diagram of a local structure of an air conditioner according to an embodiment of the present application;

[0070] Figure 12 It is a schematic diagram of a local structure of an air conditioner according to an embodiment of the present application.

[0071] In each of the above figures: 100, housing; 200, indoor fan; 300, fresh air volute; 400, fresh air fan; 401, shaft sleeve; 402, hub; 403, new fan blade; 500, counterweight sleeve; 600, connecting shaft. Detailed implementation manners

[0072] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0073] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0074] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0075] In the present utility model, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0076] Next, the present utility model will be specifically described by way of exemplary embodiments. However, it should be understood that, without further narration, the elements, structures, and features in one embodiment can also be beneficially incorporated into other embodiments.

[0077] In this application, the air conditioner includes an outdoor unit and an indoor unit. Among them, a compressor, an outdoor heat exchanger, and an outdoor fan are provided in the outdoor unit. An indoor heat exchanger and an indoor fan are provided in the indoor unit. Heat exchange is achieved by using the outdoor heat exchanger and the indoor heat exchanger as an evaporator and a condenser respectively. The air that has been heat-exchanged by the indoor heat exchanger is output to the room through the indoor fan, thereby realizing cooling or heating of the room.

[0078] Hereinafter, the embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0079] Please refer to all the drawings. In a schematic embodiment of the air conditioner of the present utility model, the air conditioner includes: a housing 100, and the housing 100 is used to be arranged indoors.

[0080] In some embodiments, the air conditioner further includes an indoor heat exchanger, and the indoor heat exchanger is arranged in the housing 100.

[0081] In some embodiments, the air conditioner further includes an indoor fan 200, and the indoor fan 200 is arranged in the housing 100.

[0082] In some embodiments, an indoor air outlet is further provided on the housing 100. The indoor fan 200 outputs the air that has been heat-exchanged by the indoor heat exchanger to the room through the indoor air outlet, thereby realizing the adjustment of the indoor temperature.

[0083] In some embodiments, the air conditioner further includes a motor, and the motor is arranged at one end of the indoor fan 200, and the motor drives the indoor fan 200 to rotate.

[0084] In some embodiments, the air conditioner further includes a connecting shaft 600, and the axis of the connecting shaft 600 is collinear with the axis of the indoor fan 200.

[0085] In some embodiments, the connecting shaft 600 is arranged at the end of the indoor fan 200 away from the motor.

[0086] In some embodiments, the air conditioner further includes a fresh air fan 400. The fresh air fan 400 includes a fresh fan blade 403, a hub 402, and a bushing 401. The axis of the bushing 401 is the axis of the fresh air fan 400. The hub 402 connects the bushing 401 and the fresh fan blade 403.

[0087] In some embodiments, a counterweight sleeve 500 is arranged in the bushing 401, and the connecting shaft 600 is arranged in the counterweight sleeve 500.

[0088] In some embodiments, the length of the counterweight sleeve 500 is L; wherein, the length of the counterweight sleeve 500 on the side of the hub 402 away from the indoor fan 200 is L1, and the length of the counterweight sleeve 500 on the side of the hub 402 facing the indoor fan 200 is L2; the length in the axial direction of the fresh air fan 400 is H.

[0089] In some embodiments, it satisfies 0.5H ≤ L. If L is less than 0.5H, the length of the counterweight sleeve 500 is too short, resulting in an unstable connection between the connecting shaft 600 and the fresh air fan 400, leading to radial runout of the fresh air fan 400.

[0090] In some embodiments, it satisfies L1 ≤ L2. If L1 is greater than L2, the center of gravity of the counterweight sleeve 500 is more biased towards the end of the hub 402 away from the indoor fan 200, which will cause the center of gravity of the new fan 400 to be away from the indoor fan 200. During rotation, it will cause radial runout of the fresh air fan 200.

[0091] In the above solution, through reasonable proportioning, the weight distribution of the counterweight sleeve 500 on both sides of the hub 402 is reasonable, increasing the configuration effect of the counterweight sleeve 500 and the contact fit between the counterweight sleeve 500 and the connecting shaft 600. The mass center of the fresh air fan 400 is concentrated on the configuration sleeve, and its cooperation with the connecting shaft 600 is beneficial to reducing the axial offset during the high-speed operation of the fresh air fan 400, ensuring that the fresh air fan 400 operates more smoothly, and preventing abnormal noise problems caused by excessive radial runout of the fresh air fan 400 or the indoor fan 200 in the air conditioner.

[0092] Please refer to all the attached drawings. In addition, the present application also provides an air conditioner, which includes: a housing 100, and the housing 100 is used to be arranged indoors.

[0093] In some embodiments, the air conditioner further includes an indoor heat exchanger, and the indoor heat exchanger is arranged inside the housing 100.

[0094] In some embodiments, the air conditioner further includes an indoor fan 200, and the indoor fan 200 is arranged inside the housing 100.

[0095] In some embodiments, an indoor air outlet is further opened on the housing 100. The indoor fan 200 outputs the air that has been heat-exchanged by the indoor heat exchanger to the indoor through the indoor air outlet, realizing the adjustment of the indoor temperature.

[0096] In some embodiments, the air conditioner further includes a motor, and the motor is arranged at one end of the indoor fan 200, and the motor drives the indoor fan 200 to rotate.

[0097] In some embodiments, the air conditioner further includes a connecting shaft 600, and the axis of the connecting shaft 600 is collinear with the axis of the indoor fan 200.

[0098] In some embodiments, the connecting shaft 600 is disposed at one end of the indoor fan 200 away from the motor.

[0099] In some embodiments, the air conditioner further includes a fresh air fan 400. The fresh air fan 400 includes a fresh air fan blade 403, a hub 402, and a bushing 401. The axis of the bushing 401 is the axis of the fresh air fan 400. The hub 402 connects the bushing 401 to the fresh air fan blade 403.

[0100] In some embodiments, a counterweight sleeve 500 is disposed inside the bushing 401, and the connecting shaft 600 is disposed in the counterweight sleeve 500.

[0101] In some embodiments, the length of the counterweight sleeve 500 is L; wherein, the length of the counterweight sleeve 500 on the side away from the indoor fan 200 of the hub 402 is L1, and the length of the counterweight sleeve 500 on the side of the hub 402 facing the indoor fan 200 is L2; the length in the axial direction of the fresh air fan 400 is H.

[0102] In some embodiments, it satisfies 0.5H ≤ L. If L is less than 0.5H, the length of the counterweight sleeve 500 is too short, resulting in an unstable connection between the connecting shaft 600 and the fresh air fan 400, and causing radial runout of the fresh air fan 400.

[0103] In some embodiments, it satisfies L2 ≤ 5L1. If L2 is greater than 5 times L1, the weight on the side of the counterweight sleeve 500 where the hub 402 faces the indoor fan 200 is more, resulting in the overall center of gravity of the fresh air fan 400 not being distributed on the center of gravity of the counterweight sleeve 500. During rotation, it will also cause radial runout of the fresh air fan 400. And it increases the risk of fracture of the connecting shaft 600.

[0104] In the above solution, through reasonable ratio, the weight distribution of the counterweight sleeve 500 on both sides of the hub 402 is reasonable, the configuration effect of the counterweight sleeve 500 and the contact fit between the counterweight sleeve 500 and the connecting shaft 600 are increased, the mass center of the fresh air fan 400 is concentrated on the configuration sleeve, and its cooperation with the connecting shaft 600 is beneficial to reducing the axial offset during the high-speed operation of the fresh air fan 400, ensuring that the fresh air fan 400 operates more smoothly, and preventing abnormal noise problems caused by excessive radial runout of the fresh air fan 400 or the indoor fan 200 in the air conditioner.

[0105] Please refer to all the attached drawings. In addition, the present application also provides an air conditioner, which includes:

[0106] A housing 100, and the housing 100 is used to be disposed indoors.

[0107] In some embodiments, the air conditioner further includes an indoor heat exchanger, and the indoor heat exchanger is disposed inside the housing 100.

[0108] In some embodiments, the air conditioner further includes an indoor fan 200, and the indoor fan 200 is disposed within the housing 100.

[0109] In some embodiments, an indoor air outlet is further formed in the housing 100. The indoor fan 200 outputs the air that has been heat-exchanged by the indoor heat exchanger to the interior of the room through the indoor air outlet, thereby achieving the adjustment of the indoor temperature.

[0110] In some embodiments, the air conditioner further includes a motor, and the motor is disposed at one end of the indoor fan 200 to drive the indoor fan 200 to rotate.

[0111] In some embodiments, the air conditioner further includes a connecting shaft 600, and the axis of the connecting shaft 600 is collinear with the axis of the indoor fan 200.

[0112] In some embodiments, the connecting shaft 600 is disposed at the end of the indoor fan 200 remote from the motor.

[0113] In some embodiments, the air conditioner further includes a fresh air fan 400. The fresh air fan 400 includes a fresh air fan blade 403, a hub 402, and a bushing 401. The axis of the bushing 401 is the axis of the fresh air fan 400. The hub 402 connects the bushing 401 to the fresh air fan blade 403.

[0114] In some embodiments, a counterweight sleeve 500 is disposed within the bushing 401, and the connecting shaft 600 is disposed within the counterweight sleeve 500.

[0115] In some embodiments, the length of the counterweight sleeve 500 is L; wherein, the length of the counterweight sleeve 500 on the side of the hub 402 remote from the indoor fan 200 is L1, and the length of the counterweight sleeve 500 on the side of the hub 402 facing the indoor fan 200 is L2; the length of the fresh air fan 400 in the axial direction is H.

[0116] In some embodiments, it satisfies L≤H. If L is greater than H, then the length of the counterweight sleeve 500 is greater than the axial length of the fresh air fan 400. This will cause the weight of the counterweight sleeve 500 to be too large, resulting in an excessive pressure on the connecting shaft 600.

[0117] In some embodiments, it satisfies L1≤L2. If L1 is greater than L2, then the center of gravity of the counterweight sleeve 500 is more biased towards the end of the hub 402 remote from the indoor fan 200, which will cause the center of gravity of the fresh air fan 400 to be remote from the indoor fan 200. This will cause the fresh air fan 200 to generate radial runout during rotation.

[0118] In the above solution, through reasonable proportioning, the weight distribution of the counterweight sleeve 500 on both sides of the wheel hub 402 is made reasonable, the configuration effect of the counterweight sleeve 500 and the contact fit between the counterweight sleeve 500 and the connecting shaft 600 are increased, the mass center of the fresh air fan 400 is concentrated on the configuration sleeve, and its cooperation with the connecting shaft 600 helps to reduce the axial offset during the high-speed operation of the fresh air fan 400, ensure that the fresh air fan 400 operates more smoothly, and prevent abnormal noise problems caused by excessive radial runout of the fresh air fan 400 or the indoor fan 200 in the air conditioner.

[0119] Please refer to all the attached drawings. In addition, the present application also provides an air conditioner, which includes: a housing 100, and the housing 100 is used to be arranged indoors.

[0120] In some embodiments, the air conditioner further includes an indoor heat exchanger, and the indoor heat exchanger is arranged inside the housing 100.

[0121] In some embodiments, the air conditioner further includes an indoor fan 200, and the indoor fan 200 is arranged inside the housing 100.

[0122] In some embodiments, an indoor air outlet is further provided on the housing 100. The indoor fan 200 outputs the air that has been heat-exchanged by the indoor heat exchanger to the indoor through the indoor air outlet, so as to realize the adjustment of the indoor temperature.

[0123] In some embodiments, the air conditioner further includes a motor, and the motor is arranged at one end of the indoor fan 200, and the motor drives the indoor fan 200 to rotate.

[0124] In some embodiments, the air conditioner further includes a connecting shaft 600, and the axis of the connecting shaft 600 is collinear with the axis of the indoor fan 200.

[0125] In some embodiments, the connecting shaft 600 is arranged at the end of the indoor fan 200 away from the motor.

[0126] In some embodiments, the air conditioner further includes a fresh air fan 400, and the fresh air fan 400 includes a fresh fan blade 403, a wheel hub 402 and a bushing 401, and the axis of the bushing 401 is the axis of the fresh air fan 400. The wheel hub 402 connects the bushing 401 and the fresh fan blade 403.

[0127] In some embodiments, a counterweight sleeve 500 is arranged inside the bushing 401, and the connecting shaft 600 is arranged in the counterweight sleeve 500.

[0128] In some embodiments, the length of the counterweight sleeve 500 is L; wherein, the length of the counterweight sleeve 500 on the side of the wheel hub 402 away from the indoor fan 200 is L1, and the length of the counterweight sleeve 500 on the side of the wheel hub 402 facing the indoor fan 200 is L2; the length of the fresh air fan 400 in the axial direction is H.

[0129] In some embodiments, L≤H is satisfied.

[0130] In some embodiments, L2≤5L1 is satisfied. If L2 is greater than 5 times L1, the weight on the side of the hub 402 facing the indoor fan 200 in the counterweight sleeve 500 is more, resulting in the overall center of gravity of the fresh air fan 400 not being distributed on the center of gravity of the counterweight sleeve 500. During rotation, it will also cause the fresh air fan 400 to generate radial runout. And it increases the risk of the connecting shaft 600 breaking.

[0131] In the above solution, through reasonable ratio, the weight distribution of the counterweight sleeve 500 on both sides of the hub 402 is reasonable, increasing the configuration effect of the counterweight sleeve 500 and the contact fit between the counterweight sleeve 500 and the connecting shaft 600. The mass center of the fresh air fan 400 is concentrated on the configuration sleeve, making its cooperation with the connecting shaft 600 conducive to reducing the axial offset during the high-speed operation of the fresh air fan 400, ensuring that the fresh air fan 400 operates more smoothly, and preventing abnormal noise problems caused by excessive radial runout of the fresh air fan 400 or the indoor fan 200 in the air conditioner.

[0132] In some embodiments, 0.5H≤L≤H is satisfied.

[0133] In some embodiments, L1≤L2≤5L1 is satisfied.

[0134] In some embodiments, 0.5H≤L≤H and L1≤L2≤5L1 are satisfied simultaneously.

[0135] In the above content, 0.5H≤L≤H ensures the length dimension of the counterweight sleeve 500, avoiding the center of gravity offset of the fresh air fan 400 caused by being too long, and also avoiding the unstable connection with the connecting shaft 600 caused by being too short.

[0136] Moreover, L1≤L2≤5L1 defines the positional relationship between the hub 402 and the counterweight sleeve 500, thereby ensuring that the overall center of gravity of the fresh air fan 400 is located at the proper part on the counterweight sleeve 500, so that the overall center of gravity after the cooperation of the fresh air fan 400 and the counterweight sleeve 500 can be smoothly transmitted to the connecting shaft 600. Avoiding radial runout during the rotation of the fresh air fan 400 caused by the center of gravity offset.

[0137] In some embodiments, the counterweight sleeve 500 can be inserted into the bushing 401.

[0138] In some embodiments, after the counterweight sleeve 500 is inserted into the bushing 401, the axis of the counterweight sleeve 500 is collinear with the axis of the bushing 401.

[0139] In some embodiments, the connecting shaft 600 can be inserted into the counterweight sleeve 500.

[0140] In some embodiments, after the connecting shaft 600 is inserted into the counterweight sleeve 500, the axis of the connecting shaft 600 is collinear with the axis of the counterweight sleeve 500.

[0141] In some embodiments, the axis of the bushing 401 is collinear with the axis of the indoor fan 200.

[0142] In some embodiments, the axis of the counterweight sleeve 500 is collinear with the axis of the bushing 401.

[0143] In some embodiments, the counterweight sleeve 500 can be made of metal.

[0144] In some embodiments, the counterweight sleeve 500 can be made of aluminum.

[0145] In some embodiments, the counterweight sleeve 500 can be made of steel.

[0146] In some embodiments, both ends of the counterweight sleeve 500 are flush with both ends of the bushing 401.

[0147] Through this design, it is ensured that the center of mass of the fresh air fan 400 is distributed on the counterweight sleeve 500, ensuring the dynamic balance when the fresh air fan 400 rotates, reducing the axial offset during the high-speed operation of the fresh air fan 400, and thus reducing vibration.

[0148] In some embodiments, the axial length of the counterweight sleeve 500 is the same as the axial length of the bushing 401.

[0149] In some embodiments, when the axial length of the counterweight sleeve 500 is the same as the axial length of the bushing 401, at least one end of the counterweight sleeve 500 is flush with the corresponding end of the bushing 401.

[0150] Further, when the axial length of the counterweight sleeve 500 is the same as the axial length of the bushing 401, the end of the counterweight sleeve 500 close to the indoor fan 200 is flush with the end of the bushing 401 close to the indoor fan 200.

[0151] Further, when the axial length of the counterweight sleeve 500 is the same as the axial length of the bushing 401, the end of the counterweight sleeve 500 away from the indoor fan 200 is flush with the end of the bushing 401 away from the indoor fan 200.

[0152] In some embodiments, the new fan blades 403 are circularly distributed with the bushing 401 as the axis. The length of the new fan blades 403 along the axis of the bushing 401 is the axial length of the fresh air fan 400.

[0153] In some embodiments, the new fan blades 403 are connected to the edge of the hub 402.

[0154] In some embodiments, the edge of the hub 402 has a circular structure, and a plurality of new fan blades 403 are arranged at intervals along the edge of the hub 402.

[0155] In some embodiments, the distance between any two adjacent new fan blades 403 is the same, ensuring the uniformity of air outlet.

[0156] In some embodiments, the hub 402 can be provided with a hollow structure so that air can pass through the hub 402, ensuring the fluidity of the air flow.

[0157] In some embodiments, both ends of the counterweight sleeve 500 do not exceed the two ends in the length direction of the new fan blade 403. Ensure that the center of mass of the new air fan 400 is distributed on the counterweight sleeve 500, ensure the dynamic balance when the new air fan 400 rotates, reduce the axial offset during the high-speed operation of the new air fan 400, and thus reduce vibration.

[0158] In some embodiments, both ends of the bushing 401 and the counterweight sleeve 500 do not exceed the two ends in the length direction of the new fan blade 403. Ensure that the center of mass of the new air fan 400 is distributed on the counterweight sleeve 500.

[0159] In some embodiments, a clamping member and a clamping groove are respectively arranged on the counterweight sleeve 500 and the bushing 401; the connection between the counterweight sleeve 500 and the bushing 401 is realized through the clamping of the clamping member and the clamping groove. Through the connection of the clamping member and the clamping groove, the installation of the counterweight sleeve 500 is facilitated and the installation efficiency is improved.

[0160] In some embodiments, a clamping member is arranged on the outer peripheral wall of the counterweight sleeve 500, and a clamping groove is opened on the inner wall of the bushing 401. When both ends of the counterweight sleeve 500 are flush with both ends of the bushing 401 respectively, the clamping member is clamped into the clamping groove.

[0161] Further, the clamping member is annular, and the clamping member is coaxially fixed on the outer peripheral wall of the counterweight sleeve 500. The clamping groove is annular and coaxially opened on the inner peripheral wall of the bushing 401.

[0162] Furthermore, the clamping member and the counterweight sleeve 500 can be integrally formed, improving the structural strength.

[0163] In some other embodiments, a clamping groove is opened on the outer peripheral wall of the counterweight sleeve 500, and a clamping member is arranged on the inner wall of the bushing 401. When both ends of the counterweight sleeve 500 are flush with both ends of the bushing 401 respectively, the clamping member is clamped into the clamping groove.

[0164] Further, a circumferential clamping groove is coaxially opened on the outer peripheral wall of the counterweight sleeve. A circumferential clamping member is coaxially arranged on the inner peripheral wall of the bushing 401.

[0165] In some embodiments, the clamping member and the bushing 401 can be integrally formed, improving the structural strength.

[0166] In some embodiments, a bearing seat and a bearing are provided between the indoor fan 200 and the fresh air fan 400.

[0167] Further, the bearing seat is disposed on the housing 100, the bearing is disposed within the bearing seat, and the connecting shaft 600 is connected to the bearing. Stable support is achieved through the bearing, and the jitter of the connecting shaft 600 is reduced.

[0168] In some embodiments, the bearing seat and the bearing are disposed between the fresh air volute 300 and the indoor fan 200.

[0169] In some embodiments, there is at least one planar first limiting side on the peripheral wall of the connecting shaft 600. The counterweight sleeve 500 is provided with corresponding numbers and corresponding positions of second limiting sides. After the connecting shaft 600 is inserted into the counterweight sleeve 500, the first limiting side is in contact with the second limiting side. Through the cooperation of the first limiting side and the second limiting side, it is ensured that the counterweight sleeve 500 and the connecting shaft 600 rotate synchronously. The synchronous rotation of the fresh air fan 400 and the indoor fan 200 is guaranteed.

[0170] In some embodiments, a threaded section is provided at one end of the connecting shaft 600 away from the indoor fan 200; a nut is threadedly connected to the threaded section. The nut prevents the fresh air fan 400 and the counterweight sleeve 500 from detaching from the connecting shaft 600. This design provides a simple and reliable fixing method, enhances the connection strength between the fresh air fan 400 and the indoor fan 200, and improves the overall stability of the system.

[0171] In some embodiments, one end of the nut facing the shaft sleeve 401 abuts against one end of the shaft sleeve 401 away from the indoor fan 200.

[0172] Further, the threaded section and the connecting shaft 600 are integrally formed.

[0173] In some embodiments, a washer can be sleeved on the threaded section. By providing a washer to block between the nut and the shaft sleeve 401, it is possible to prevent the shaft sleeve 401 or the counterweight sleeve 500 from being damaged when the nut is tightened.

[0174] In some embodiments, the number of washers can be multiple. If the counterweight sleeve 500 does not well match the weight of the fresh air fan 400, the weight on the fresh air fan 400 can be adjusted by adjusting the number of washers, thereby avoiding radial jitter of the fresh air fan 400.

[0175] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An air conditioner, characterized in that: It includes: case; an indoor heat exchanger, wherein the indoor heat exchanger is disposed in the shell; an indoor fan, wherein the indoor fan is disposed in the housing; A motor, wherein the motor is arranged at one end of the indoor fan, and the motor drives the indoor fan to rotate; A connecting shaft, the axis of which is colinear with the axis of the indoor fan, and the connecting shaft is disposed at an end of the indoor fan away from the motor; A fresh air fan, the fresh air fan comprising fresh fan blades, a hub and a shaft sleeve, the axis of the shaft sleeve being the axis of the fresh air fan; the hub connects the shaft sleeve with the fresh fan blades; A counterweight sleeve is arranged in the shaft sleeve, and the connecting shaft is arranged in the counterweight sleeve; the length of the counterweight sleeve is L; the length of the counterweight sleeve on the side of the hub away from the indoor fan is L1, and the length of the counterweight sleeve on the side of the hub facing the indoor fan is L2; ​​the length of the fresh air fan in the axial direction is H; Satisfies, 0.5H≤L and L1≤L2.

2. An air conditioner, characterized in that: It includes: case; an indoor heat exchanger, wherein the indoor heat exchanger is disposed in the shell; an indoor fan, wherein the indoor fan is disposed in the housing; A motor, wherein the motor is arranged at one end of the indoor fan, and the motor drives the indoor fan to rotate; A connecting shaft, the axis of which is colinear with the axis of the indoor fan, and the connecting shaft is disposed at an end of the indoor fan away from the motor; A fresh air fan, the fresh air fan comprising fresh fan blades, a hub and a shaft sleeve, the axis of the shaft sleeve being the axis of the fresh air fan; the hub connects the shaft sleeve with the fresh fan blades; A counterweight sleeve is arranged in the shaft sleeve, and the connecting shaft is arranged in the counterweight sleeve; the length of the counterweight sleeve is L; the length of the counterweight sleeve on the side of the hub away from the indoor fan is L1, and the length of the counterweight sleeve on the side of the hub facing the indoor fan is L2; ​​the length of the fresh air fan in the axial direction is H; Satisfies, 0.5H≤L and L2≤5L1.

3. An air conditioner, characterized in that: It includes: case; an indoor heat exchanger, wherein the indoor heat exchanger is disposed in the shell; an indoor fan, wherein the indoor fan is disposed in the housing; A motor, wherein the motor is arranged at one end of the indoor fan, and the motor drives the indoor fan to rotate; A connecting shaft, the axis of which is colinear with the axis of the indoor fan, and the connecting shaft is disposed at an end of the indoor fan away from the motor; A fresh air fan, the fresh air fan comprising fresh fan blades, a hub and a shaft sleeve, the axis of the shaft sleeve being the axis of the fresh air fan; the hub connects the shaft sleeve with the fresh fan blades; A counterweight sleeve is arranged in the shaft sleeve, and the connecting shaft is arranged in the counterweight sleeve; the length of the counterweight sleeve is L; the length of the counterweight sleeve on the side of the hub away from the indoor fan is L1, and the length of the counterweight sleeve on the side of the hub facing the indoor fan is L2; ​​the length of the fresh air fan in the axial direction is H; Satisfies, L≤H and L1≤L2.

4. An air conditioner, characterized in that: It includes: case; an indoor heat exchanger, wherein the indoor heat exchanger is disposed in the shell; an indoor fan, wherein the indoor fan is disposed in the housing; A motor, wherein the motor is arranged at one end of the indoor fan, and the motor drives the indoor fan to rotate; A connecting shaft, the axis of which is colinear with the axis of the indoor fan, and the connecting shaft is disposed at an end of the indoor fan away from the motor; A fresh air fan, the fresh air fan comprising fresh fan blades, a hub and a shaft sleeve, the axis of the shaft sleeve being the axis of the fresh air fan; the hub connects the shaft sleeve with the fresh fan blades; A counterweight sleeve is arranged in the shaft sleeve, and the connecting shaft is arranged in the counterweight sleeve; the length of the counterweight sleeve is L; the length of the counterweight sleeve on the side of the hub away from the indoor fan is L1, and the length of the counterweight sleeve on the side of the hub facing the indoor fan is L2; ​​the length of the fresh air fan in the axial direction is H; Satisfies, L≤H and L2≤5L1.

5. The air conditioner according to any one of claims 1 to 4, characterized in that: The two ends of the counterweight sleeve are flush with the two ends of the shaft sleeve.

6. The air conditioner according to any one of claims 1 to 4, characterized in that: The new fan blades are distributed in a circle with the shaft sleeve as the axis; the length of the new fan blades along the axial direction of the shaft sleeve is the axial length of the new air fan.

7. The air conditioner according to claim 6, characterized in that: The two ends of the counterweight sleeve do not exceed the two ends of the new fan blade in the length direction.

8. The air conditioner according to any one of claims 1 to 4, characterized in that: A clamping piece and a clamping slot are respectively provided on the counterweight sleeve and the shaft sleeve; the connection between the counterweight sleeve and the shaft sleeve is achieved by clamping the clamping piece and the clamping slot.

9. The air conditioner according to any one of claims 1 to 4, characterized in that: The connecting shaft has at least one planar first limiting side on its peripheral wall; the counterweight sleeve is provided with corresponding number and corresponding positions of second limiting sides; after the connecting shaft is inserted into the counterweight sleeve, the first limiting side fits with the second limiting side.

10. The air conditioner according to any one of claims 1 to 4, characterized in that: A threaded section is arranged at one end of the connecting shaft away from the indoor fan; a nut is threadedly connected to the threaded section; and the nut abuts against one end of the shaft sleeve away from the indoor fan.

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