Indoor unit of air conditioner

Abstract

The utility model relates to an indoor unit of an air conditioner, which belongs to the technical field of air conditioners and comprises a casing, an indoor heat exchanger, a heat exchange volute, a heat exchange fan, a heat exchange motor and a threaded connector, the heat exchange fan comprises an impeller portion and a fan shaft sleeve, and the impeller portion is coaxially sleeved on the fan shaft sleeve. An output shaft of the heat exchange motor coaxially penetrates through and is connected with the fan shaft sleeve. The first mounting groove is formed in the peripheral wall of an output shaft of the heat exchange motor, and the first mounting groove and the output shaft of the heat exchange motor are coaxially arranged; the threaded connecting piece penetrates through the fan shaft sleeve in the radial direction of the fan shaft sleeve, is in threaded connection with the fan shaft sleeve and abuts against the groove wall of the first mounting groove so that the heat exchange fan can be fixedly connected with the output shaft of the heat exchange motor. The first mounting groove is an annular groove, when the heat exchange fan and the heat exchange motor are connected, the threaded connecting piece can be directly screwed down, all stabbing chips generated during threaded connection can be left in the first mounting groove, and dismounting of the heat exchange fan cannot be affected.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to an indoor unit of an air conditioner. Background Art

[0002] In family life, air conditioning has become one of the essential household appliances for every family. Air conditioning includes an air conditioning indoor unit. The air conditioning indoor unit is set indoors and is used to exchange heat with indoor air to increase or decrease the indoor temperature.

[0003] When the indoor unit of the air conditioner is a floor mounted unit or a ducted unit, the indoor unit includes a housing, an indoor heat exchanger, a heat exchange volute, a heat exchange fan and a heat exchange motor. The housing is provided with an air inlet and an air outlet. Driven by the heat exchange motor, the heat exchange fan rotates to drive the indoor air through the air inlet, into the heat exchange volute, and then after heat exchange in the indoor heat exchanger, flows to the indoor through the air outlet.

[0004] At present, the heat exchange fan of the air conditioner indoor unit is fixed to the motor shaft with a headless nut. The motor shaft is cut and the headless screw needs to be tightened to the cut edge. When installing the heat exchange fan, workers need to align it with the naked eye. If the headless nut is fixed to the non-cut edge area, the motor shaft will be burred and deformed after the headless nut is tightened. If the burr deformation is not on the cut edge, the burr will hinder the disassembly of the heat exchange fan, resulting in the heat exchange fan being unable to be disassembled. Utility Model Content

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

[0006] To this end, the present application aims to provide an air-conditioning indoor unit, wherein an installation groove is provided on the output shaft of the heat exchange motor. When the heat exchange fan and the heat exchange motor are connected, the threaded connector can be directly tightened, and the shavings generated during the threaded connection will remain in the installation groove and will not affect the disassembly of the heat exchange fan.

[0007] In order to achieve the above object, the utility model provides an air conditioner indoor unit, comprising:

[0008] A housing, wherein the rear side of the housing has an air-conditioning air inlet, and the front side of the housing has an air-conditioning air outlet;

[0009] An indoor heat exchanger, the indoor heat exchanger is arranged in the shell, and the indoor heat exchanger is close to the air outlet of the air conditioner;

[0010] A heat exchange volute, the heat exchange volute is arranged in the shell, and the heat exchange volute is close to the air inlet of the air conditioner;

[0011] A heat exchange fan, the heat exchange fan is arranged in the heat exchange volute, the heat exchange fan comprises an impeller part and a fan sleeve, and the impeller part is coaxially sleeved on the fan sleeve;

[0012] a heat exchange motor, wherein the heat exchange motor and the heat exchange fan are spaced apart along the length direction of the shell, the output shaft of the heat exchange motor coaxially penetrates and is connected to the fan sleeve, and the heat exchange motor is used to drive the heat exchange fan to rotate, so that indoor air enters the shell through the air inlet of the air conditioner, and then flows through the indoor heat exchanger and then flows into the room through the air outlet of the air conditioner;

[0013] A first mounting groove, wherein the first mounting groove is formed on an outer peripheral wall of an output shaft of the heat exchange motor, and the first mounting groove is coaxially arranged with the output shaft of the heat exchange motor;

[0014] A threaded connector is provided along the radial direction of the fan sleeve and is threadedly connected to the fan sleeve, and abuts against the groove wall of the first mounting groove, so that the heat exchange fan and the output shaft of the heat exchange motor are fixedly connected.

[0015] In the technical solution, a first mounting groove is provided on the output shaft of the heat exchange motor. When the heat exchange fan and the heat exchange motor are connected, the threaded connector can be directly tightened. The shavings generated during the threaded connection will remain in the first mounting groove and will not affect the disassembly of the heat exchange fan.

[0016] In some embodiments of the present application, there are two output shafts of the heat exchanger motor, and the two output shafts of the heat exchanger motor are coaxially arranged on both sides of the heat exchanger motor, and the number of the first mounting grooves is the same as the number of the output shafts of the heat exchanger motor and are arranged one-to-one.

[0017] The utility model also provides an air conditioner indoor unit, which comprises:

[0018] A housing, wherein the rear side of the housing has an air-conditioning air inlet, and the front side of the housing has an air-conditioning air outlet;

[0019] An indoor heat exchanger, the indoor heat exchanger is arranged in the shell, and the indoor heat exchanger is close to the air outlet of the air conditioner;

[0020] A heat exchange volute, the heat exchange volute is arranged in the shell, and the heat exchange volute is close to the air inlet of the air conditioner;

[0021] A heat exchange fan, the heat exchange fan is arranged in the heat exchange volute, the heat exchange fan comprises an impeller part and a fan sleeve, and the impeller part is coaxially sleeved on the fan sleeve;

[0022] a heat exchange motor, wherein the heat exchange motor and the heat exchange fan are spaced apart along the length direction of the shell, the output shaft of the heat exchange motor coaxially penetrates and is connected to the fan sleeve, and the heat exchange motor is used to drive the heat exchange fan to rotate, so that indoor air enters the shell through the air inlet of the air conditioner, and then flows through the indoor heat exchanger and then flows into the room through the air outlet of the air conditioner;

[0023] A transmission shaft, wherein the length direction of the transmission shaft is the same as the length direction of the housing, one end of the transmission shaft is connected to the heat exchange motor, and the other end of the transmission shaft coaxially passes through and is connected to the fan sleeve;

[0024] A second mounting groove, the second mounting groove is formed on the outer peripheral wall of the transmission shaft, and the second mounting groove is coaxially arranged with the transmission shaft;

[0025] A threaded connector is provided along the radial direction of the fan sleeve and is threadedly connected to the fan sleeve, and abuts against the groove wall of the second mounting groove, so that the heat exchange fan and the transmission shaft are fixedly connected.

[0026] In the technical solution, a second mounting groove is provided on the transmission shaft. When the heat exchange fan and the transmission shaft are connected, the threaded connector can be directly tightened. The shavings generated during the threaded connection will remain in the second mounting groove and will not affect the disassembly of the heat exchange fan.

[0027] In some embodiments of the present application, a plurality of second mounting grooves are spaced apart along the length direction of the transmission shaft, and the number of the heat exchange fans is the same as the number of the second mounting grooves and are arranged in one-to-one correspondence.

[0028] Some embodiments of the present application further include a coupling, which is arranged between the transmission shaft and the output shaft of the heat exchange motor. The outer peripheral wall of the transmission shaft at one end close to the coupling is coaxially provided with an annular third mounting groove, and the threaded connector is radially penetrated through the coupling and threadedly connected to the coupling, and abuts against the groove wall of the third mounting groove.

[0029] In some embodiments of the present application, a fourth annular mounting groove is coaxially provided on the outer peripheral wall of one end of the output shaft of the heat exchange motor close to the coupling, and the threaded connecting piece is radially penetrated through the coupling and threadedly connected to the coupling, and abuts against the groove wall of the fourth mounting groove.

[0030] In some embodiments of the present application, the impeller portion includes fan blades and a hub, the fan blades are composed of a plurality of blades, the fan blades are coaxially arranged on the outer peripheral wall of the hub, and the hub is coaxially sleeved on the fan sleeve.

[0031] In some embodiments of the present application, a clearance groove is provided on the wheel hub, the position of the clearance groove corresponds to the position of the threaded connector, and the clearance groove is used to make way for the installation of the threaded connector.

[0032] In some embodiments of the present application, the threaded connection member is a screw, a threaded hole is radially opened in the fan sleeve, and the screw is threadedly connected to the threaded hole.

[0033] In some embodiments of the present application, a volute air inlet and a volute air outlet are formed on the heat exchange volute, the volute air inlet is connected to the air inlet of the air conditioner, and the volute air outlet is arranged toward the indoor heat exchanger.

[0034] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic diagram of the overall structure of an air-conditioning indoor unit according to an embodiment of the present application;

[0036] Figure 2 is a rear view of the overall structure of the indoor unit of the air conditioner according to the embodiment of the present application;

[0037] Figure 3 It is a front view of the overall structure of the indoor unit of the air conditioner according to the embodiment of the present application;

[0038] Figure 4 According to the embodiment of the present application, the indoor unit of the air conditioner Figure 3 Section view in the AA direction;

[0039] Figure 5 It is a schematic diagram of the local structure of the heat exchange motor of the indoor unit of the air conditioner according to the implementation mode of the present application;

[0040] Figure 6 is a schematic diagram of the enlarged structure of point B in 5 of the indoor unit of the air conditioner according to the implementation mode of the present application;

[0041] Figure 7 It is a schematic diagram of the local structure of the heat exchange motor of the indoor unit of the air conditioner according to the implementation mode of the present application;

[0042] Figure 8 According to the embodiment of the present application, the indoor unit of the air conditioner Figure 7 The enlarged structural diagram at C in the middle;

[0043] Fig. 9 It is a schematic diagram of the local structure of the heat exchange motor of the indoor unit of the air conditioner according to the implementation mode of the present application;

[0044] Fig.10 According to the embodiment of the present application, the indoor unit of the air conditioner Figure 3 Cross-sectional view in the middle DD direction;

[0045] Fig.11 According to the embodiment of the present application, the indoor unit of the air conditioner Fig.10 The enlarged structural diagram at E in the middle;

[0046] Fig.12 It is a schematic diagram of the local structure of the heat exchange motor of the indoor unit of the air conditioner according to the implementation mode of the present application;

[0047] Fig.13 It is a side view of the local structure of the heat exchange volute of the indoor unit of the air conditioner according to the embodiment of the present application;

[0048] Fig.14 According to the embodiment of the present application, the indoor unit of the air conditioner Fig.13 Cross-sectional view in the FF direction;

[0049] Fig.15 According to the embodiment of the present application, the indoor unit of the air conditioner Fig.14 The enlarged structural diagram at G in the middle;

[0050] Fig.16 According to the embodiment of the present application, the indoor unit of the air conditioner Fig.14 The schematic diagram of the structure at H in the middle is enlarged;

[0051] Fig.17 According to the embodiment of the present application, the indoor unit of the air conditioner Fig.14 The enlarged structural diagram at position I in the middle;

[0052] Fig.18 is a schematic structural diagram of a transmission shaft of an indoor unit of an air conditioner according to an embodiment of the present application;

[0053] Fig.19 It is a schematic diagram of the local structure of the heat exchange fan of the indoor unit of the air conditioner according to the implementation mode of the present application;

[0054] Fig. 20 According to the embodiment of the present application, the indoor unit of the air conditioner Fig.19 Enlarged structural diagram at J in the middle.

[0055] In the above figures: 100, shell; 101, air inlet of air conditioner; 102, air outlet of air conditioner; 200, indoor heat exchanger; 300, heat exchange volute; 400, heat exchange fan; 500, heat exchange motor; 600, first mounting groove; 700, threaded connection; 800, transmission shaft; 900, second mounting groove; 110, coupling; 120, third mounting groove; 130, fourth mounting groove; 140, fan blade; 150, hub; 160, fan bushing; 170, clearance groove. DETAILED DESCRIPTION

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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, and therefore should not be understood as a limitation to the present invention.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean 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, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures and features in one embodiment may also be beneficially combined in other embodiments.

[0061] In the present application, the air conditioner indoor unit performs a refrigeration cycle of the indoor unit by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0062] The compressor compresses the low-temperature and low-pressure refrigerant gas and discharges the high-temperature and high-pressure refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0063] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the duct air conditioner can adjust the temperature of the indoor space.

[0064] The outdoor unit is a part of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0065] The indoor heat exchanger and the outdoor heat exchanger are used as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the duct unit is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the duct unit is used as a cooler in a cooling mode.

[0066] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0067] As attached Figures 1 to 8 As shown, in an illustrative embodiment of an air-conditioning indoor unit of the utility model, the air-conditioning indoor unit includes a shell 100, an indoor heat exchanger 200, a heat exchange volute 300, a heat exchange fan 400, a heat exchange motor 500, and a threaded connector 700. The shell 100 has an air-conditioning air inlet 101 on the rear side, and the shell 100 has an air-conditioning air outlet 102 on the front side; the indoor heat exchanger 200 is arranged in the shell 100, and the indoor heat exchanger 200 is close to the air-conditioning air outlet 102; the heat exchange volute 300 is arranged in the shell 100, and the heat exchange volute 300 is close to the air-conditioning air inlet 101; the heat exchange fan 400 is arranged in the heat exchange volute 300, and the heat exchange fan 400 includes an impeller part and a fan sleeve 160, and the impeller part is coaxially sleeved in the fan sleeve 160.

[0068] The heat exchange motor 500 and the heat exchange fan 400 are arranged at intervals along the length direction of the shell 100. The output shaft of the heat exchange motor 500 coaxially passes through and is connected to the fan sleeve 160. The heat exchange motor 500 is used to drive the heat exchange fan 400 to rotate, so that indoor air enters the shell 100 through the air inlet of the air conditioner, and then flows through the indoor heat exchanger 200 and then flows into the room through the air outlet of the air conditioner.

[0069] The first mounting groove 600 is provided on the outer peripheral wall of the output shaft of the heat exchange motor 500, and the first mounting groove 600 is coaxially arranged with the output shaft of the heat exchange motor 500; the threaded connection piece 700 is radially penetrated through the fan sleeve 160 and threadedly connected to the fan sleeve 160, and abuts against the groove wall of the first mounting groove 600, so that the output shaft of the heat exchange fan 400 and the heat exchange motor 500 are fixedly connected.

[0070] Through the above technical solution, a first mounting groove 600 is opened on the output shaft of the heat exchange motor 500, and the first mounting groove 600 is an annular groove. When the heat exchange fan 400 and the heat exchange motor 500 are connected, the threaded connector 700 can be directly tightened. The shavings generated during the threaded connection will remain in the first mounting groove 600 and will not affect the disassembly of the heat exchange fan.

[0071] In the prior art, the heat exchange fan 400 of the indoor unit of the air conditioner is fixed to the output shaft of the heat exchange motor 500 with a headless nut. The tightening position of the headless nut will cause burrs and deformation. Therefore, the output shaft of the heat exchange motor 500 is provided with a cutting plane, which is a D-shaped cutting edge. When workers install the fan, they align it with their naked eyes, and the headless screws need to be tightened to the cutting edge. Otherwise, once the headless nut is fixed to the non-cutting edge area, when the heat exchange fan 400 is disassembled, the burrs will prevent the heat exchange fan 400 from being removed from the output shaft of the heat exchange motor 500, resulting in the heat exchange fan 400 being unable to be disassembled. In addition, the need for naked eye alignment during the installation process is also prone to errors, which reduces assembly efficiency.

[0072] In some embodiments, there are two output shafts of the heat exchange motor 500, and the output shafts of the two heat exchange motors 500 are coaxially arranged on both sides of the heat exchange motor 500, and the number of the first mounting grooves 600 is the same as the number of the output shafts of the heat exchange motor 500 and are arranged one-to-one.

[0073] When installing the heat exchange fan 400, the output shafts on both sides of the heat exchange motor 500 pass through a heat exchange fan 400 respectively, and the threaded connector 700 is passed through the fan sleeve 160 along the radial direction of the fan sleeve 160 and abuts against the first mounting groove 600. The installation worker does not need to align the installation position of the threaded connector 700 with the naked eye, and only needs to put the fan sleeve 160 in the first mounting groove 600. The installation is quick and accurate.

[0074] In some embodiments, the length of the first mounting groove 600 along the length direction of the shell 100 is smaller than the length of the fan sleeve 160 along the length direction of the shell 100. It is only necessary to provide the first mounting groove 600 at a position close to the end of the fan sleeve 160 on the output shaft of the heat exchange motor 500. When processing the output shaft of the heat exchange motor 500, the first mounting groove 600 can be directly machined out with a lathe without the need for edge cutting with a grinder, thereby facilitating processing.

[0075] In some embodiments, the impeller portion is coaxially arranged with the fan sleeve 160, and the fan sleeve 160 is sleeved on the output shaft of the heat exchange motor 500, so that the output shaft of the heat exchange motor 500 is fixedly connected to the heat exchange fan 400. Since the fan sleeve 160 is nested in the middle of the heat exchange fan 400, the heat exchange fan 400 and the fan sleeve 160 are integrally formed during processing, and the fan sleeve 160 is sleeved on the output shaft of the heat exchange motor 500 so that the output shaft of the heat exchange motor 500 can be fixedly connected to the heat exchange fan 400.

[0076] As attached Figures 9 to 11 As shown, in some embodiments, the impeller portion includes a fan blade 140 and a hub 150 , the fan blade 140 is composed of a plurality of blades, the fan blade 140 is coaxially arranged on the outer peripheral wall of the hub 150 , and the hub 150 is coaxially sleeved on the fan sleeve 160 .

[0077] In some embodiments, a clearance groove 170 is formed on the wheel hub 150 . The position of the clearance groove 170 corresponds to the position of the threaded connector 700 . The clearance groove 170 is used to make way for the installation of the threaded connector 700 .

[0078] In some embodiments, the threaded connector 700 is a screw, a threaded hole is radially provided in the fan sleeve 160, and the screw is threadedly connected to the threaded hole.

[0079] In some embodiments, the screw is inserted into the output shaft of the heat exchange motor 500 through the threaded hole via the first mounting groove 600, so that the output shaft of the heat exchange motor 500 is fixedly connected to the fan sleeve 160. One end of the screw has an operation port, and the technician can use a tool such as a screwdriver to rotate the screw from the operation port. The other end of the screw has an annular screw end, and the outer side and the inner side of the annular screw end are at different axial heights in the axial direction of the screw to make the screw end conical; a conical screw-in portion is provided at the center of the annular screw end, and the screw-in portion is used to allow the screw to enter the output shaft of the heat exchange motor 500 by rotation when the output shaft of the heat exchange motor 500 and the fan sleeve 160 are connected.

[0080] The screw is screwed into the output shaft of the heat exchange motor 500 through the threaded hole. The screw is penetrated into the output shaft of the heat exchange motor 500 and the end of the screw abuts against the outer peripheral wall of the output shaft of the heat exchange motor 500 and squeezes the output shaft of the heat exchange motor 500. The end of the screw is accommodated in the first mounting groove 600 and abuts against the groove wall of the first mounting groove 600. The end of the screw cooperates with the first mounting groove 600 to limit the output shaft of the heat exchange motor 500 from moving along the axial direction of the fan sleeve 160, ensuring that the heat exchange fan 400 and the output shaft of the heat exchange motor 500 are fixed in place and do not rotate relative to each other, so that the output shaft of the heat exchange motor 500 is fixedly connected to the heat exchange fan 400. When the output shaft of the heat exchange motor 500 rotates, it drives the heat exchange fan 400 to rotate.

[0081] Since there is no partial cutting plane on the output shaft of the heat exchange motor 500, each section of the transmission shaft 800 is uniform, so when screwing in the screws, there is no need to align them with the cutting plane on the output shaft of the heat exchange motor 500, thereby improving assembly efficiency.

[0082] In some embodiments, a volute air inlet and a volute air outlet are formed on the heat exchange volute 300 , the volute air inlet is connected to the air-conditioning air inlet 101 , and the volute air outlet is arranged toward the indoor heat exchanger 200 .

[0083] In some embodiments, the housing 100 has a cubic appearance, with a top plate disposed on the top, side plates disposed on the sides, the side plates including a first side plate and a second side plate, and a bottom plate disposed on the bottom of the housing 100, the bottom plates including a first bottom plate and a second bottom plate; the top plate, side plates and bottom plate of the housing 100 enclose a housing 100 cavity. A partition is disposed inside the housing 100 cavity along the left-right direction, the partition divides the housing 100 cavity into a first cavity and a second cavity, wherein the first cavity is located behind the second cavity, the first cavity is connected to the air inlet 101 of the air conditioner, and the second cavity is connected to the air outlet 102 of the air conditioner.

[0084] In addition, in an illustrative embodiment of an air-conditioning indoor unit of the utility model, it includes a shell 100, an indoor heat exchanger 200, a heat exchange volute 300, a heat exchange fan 400, a heat exchange motor 500, a transmission shaft 800, and a threaded connector 700; the shell 100 has an air-conditioning air inlet 101 on the rear side, and the shell 100 has an air-conditioning air outlet 102 on the front side; the indoor heat exchanger 200 is arranged in the shell 100, and the indoor heat exchanger 200 is close to the air-conditioning air outlet 102; the heat exchange volute 300 is arranged in the shell 100, and the heat exchange volute 300 is close to the air-conditioning air inlet 101; the heat exchange fan 400 is arranged in the heat exchange volute 300, and the heat exchange fan 400 includes an impeller part and a fan sleeve 160, and the impeller part is coaxially sleeved in the fan sleeve 160.

[0085] The heat exchange motor 500 and the heat exchange fan 400 are arranged at intervals along the length direction of the shell 100. The output shaft of the heat exchange motor 500 coaxially passes through and is connected to the fan sleeve 160. The heat exchange motor 500 is used to drive the heat exchange fan 400 to rotate, so that indoor air enters the shell 100 through the air inlet of the air conditioner, and then flows through the indoor heat exchanger 200 and then flows into the room through the air outlet of the air conditioner.

[0086] The length direction of the transmission shaft 800 is the same as the length direction of the shell 100. One end of the transmission shaft 800 is connected to the heat exchange motor 500, and the other end of the transmission shaft 800 coaxially passes through and is connected to the fan sleeve 160; the second mounting groove 900 is opened on the outer peripheral wall of the transmission shaft 800, and the second mounting groove 900 is coaxially arranged with the transmission shaft 800; the threaded connection 700 is radially penetrated by the fan sleeve 160 and threadedly connected to the fan sleeve 160, and abuts against the groove wall of the second mounting groove 900 to fix the heat exchange fan 400 and the transmission shaft 800.

[0087] Through the above technical solution, a second mounting groove 900 is opened on the transmission shaft 800, and the second mounting groove 900 is an annular groove. When the heat exchange fan 400 and the transmission shaft 800 are connected, the threaded connector 700 can be directly tightened. The shavings generated during the threaded connection will remain in the second mounting groove 900 and will not affect the disassembly of the heat exchange fan.

[0088] As attached Figures 12 to 18 As shown, in some embodiments, a plurality of second mounting grooves 900 are spaced apart along the length direction of the transmission shaft 800 , and the number of the heat exchange fans 400 is the same as the number of the second mounting grooves 900 and are arranged in one-to-one correspondence.

[0089] In some embodiments, the length of the second mounting groove 900 along the length direction of the shell 100 is smaller than the length of the fan sleeve 160 along the length direction of the shell 100. It is only necessary to open a second mounting groove 900 on the transmission shaft 800 near the end of the fan sleeve 160. When making the transmission shaft 800, the second mounting groove 900 can be directly machined out by a lathe without the need for edge cutting with a grinder, which facilitates processing.

[0090] In some embodiments, a coupling 110 is also included, and the coupling 110 is arranged between the transmission shaft 800 and the output shaft of the heat exchange motor 500. The outer peripheral wall of the transmission shaft 800 at one end close to the coupling 110 is coaxially provided with an annular third mounting groove 120, and the threaded connector 700 is radially penetrated and threadedly connected to the coupling 110, and abuts against the groove wall of the third mounting groove 120.

[0091] In some embodiments, the third mounting groove 120 is an annular groove, and the length of the third mounting groove 120 along the length direction of the shell 100 is smaller than the length of the fan sleeve 160 along the length direction of the shell 100. It is only necessary to provide the third mounting groove 120 at a position close to the end of the fan sleeve 160 on the output shaft of the heat exchange motor 500.

[0092] In some embodiments, a fourth annular mounting groove 130 is coaxially provided on the outer peripheral wall of one end of the output shaft of the heat exchange motor 500 near the coupling 110 , and the threaded connector 700 is radially penetrated through the coupling 110 and threadedly connected to the coupling 110 , and abuts against the groove wall of the fourth mounting groove 130 .

[0093] In some embodiments, the fourth mounting groove 130 is an annular groove, and the length of the fourth mounting groove 130 along the length direction of the shell 100 is smaller than the length of the fan sleeve 160 along the length direction of the shell 100. It is only necessary to provide the fourth mounting groove 130 at a position close to the end of the fan sleeve 160 on the output shaft of the heat exchange motor 500.

[0094] In some embodiments, the impeller portion includes a fan blade 140 and a hub 150 . The fan blade 140 is composed of a plurality of blades. The fan blade 140 is coaxially arranged on the outer peripheral wall of the hub 150 , and the hub 150 is coaxially sleeved on the fan sleeve 160 .

[0095] As attached Figures 19 to 20 As shown, in some embodiments, a clearance groove 170 is opened on the wheel hub 150 , and the position of the clearance groove 170 corresponds to the position of the threaded connector 700 . The clearance groove 170 is used to make way for the installation of the threaded connector 700 .

[0096] In some embodiments, the hub 150 and the fan sleeve 160 are coaxially arranged, and the fan sleeve 160 is sleeved on the output shaft of the heat exchange motor 500, so that the output shaft of the heat exchange motor 500 is fixedly connected to the heat exchange fan 400. Since the fan sleeve 160 is nested in the hub 150, the heat exchange fan 400 and the fan sleeve 160 are integrally formed during processing, and the fan sleeve 160 is sleeved on the output shaft of the heat exchange motor 500 so that the output shaft of the heat exchange motor 500 can be fixedly connected to the heat exchange fan 400.

[0097] In some embodiments, the threaded connector 700 is a screw, a threaded hole is radially provided in the fan sleeve 160, and the screw is threadedly connected to the threaded hole.

[0098] In some embodiments, the screw is inserted into the transmission shaft 800 through the threaded hole via the second mounting groove 900 so that the transmission shaft 800 is fixedly connected to the fan sleeve 160. One end of the screw has an operation port, and a technician can use a screwdriver or other tool to rotate the screw from the operation port. The other end of the screw has an annular screw end, and the outer side and the inner side of the annular screw end are at different axial heights in the axial direction of the screw so that the screw end is tapered; a tapered screw-in portion is provided at the center of the annular screw end, and the screw-in portion is used to allow the screw to enter the transmission shaft 800 by rotation when the transmission shaft 800 and the fan sleeve 160 are connected.

[0099] Therefore, the screw is screwed into the transmission shaft 800 through the threaded hole, the screw is tapped into the transmission shaft 800, and the end of the screw abuts against the outer peripheral wall of the transmission shaft 800 and squeezes the motor shaft, the end of the screw is accommodated in the second mounting groove 900 and abuts against the groove wall of the second mounting groove 900, and the end of the screw cooperates with the second mounting groove 900 to limit the movement of the transmission shaft 800 along the axial direction of the fan sleeve 160, ensuring that the heat exchange fan 400 and the transmission shaft 800 are fixed in place and do not rotate relative to each other, so that the transmission shaft 800 and the heat exchange fan 400 are fixedly connected together, and when the transmission shaft 800 rotates, the heat exchange fan 400 is driven to rotate. Because there is no partial cutting plane on the transmission shaft 800, each section of the transmission shaft 800 is uniform, so when the screw is screwed in, it is not necessary to align with the cutting plane on the transmission shaft 800, thereby improving assembly efficiency.

[0100] In some embodiments, the transmission shaft 800 is a steel shaft, which is made by milling, drilling or extrusion molding of steel materials. It has high strength and good stability and can withstand large loads and lateral forces.

[0101] In some embodiments, a volute air inlet and a volute air outlet are formed on the heat exchange volute 300 , the volute air inlet is connected to the air-conditioning air inlet 101 , and the volute air outlet is arranged toward the indoor heat exchanger 200 .

[0102] In some embodiments, the heat exchange volute 300 includes a first volute and a second volute, the inner walls of the first volute and the second volute are both curved surfaces, the two ends of one side of the first volute are respectively provided with positioning slots, the two ends of the other side of the first volute are respectively provided with sockets, the two ends of one side of the second volute are respectively provided with positioning tongues, and the two ends of the other side of the second volute are respectively provided with buckles; wherein, the heat exchange fan 400 is located between the first volute and the second volute, the positioning tongue is inserted in the positioning slot, and the buckle is inserted in the socket; an air suction port, i.e., a volute air inlet, is formed between the ends of the first volute and the second volute, the volute air inlet is coaxially arranged with the drive shaft 800, and an air blowing port, i.e., a volute air outlet, is formed on the sides of the first volute and the second volute.

[0103] In some embodiments, three heat exchange fans 400 are arranged side by side along the length direction of the shell 100, one end of the heat exchange motor 500 is connected to two heat exchange fans 400 through a transmission shaft 800, and the other end of the heat exchange motor 500 is connected to a heat exchange fan 400.

[0104] When installing the heat exchange fan 400, first pass the transmission shaft 800 through the two heat exchange fans 400 on one side of the heat exchange motor 500 in turn, pass the threaded connector 700 through the fan sleeve 160 along the radial direction of the fan sleeve 160 and abut against the second mounting groove 900, the output shaft on the other side of the heat exchange motor 500 passes through another heat exchange fan 400, pass the threaded connector 700 through the fan sleeve 160 along the radial direction of the fan sleeve 160 and abut against the first mounting groove 600, install the coupling 110 between the transmission shaft 800 and the output shaft of the heat exchange motor 500, pass the two threaded connectors 700 through the coupling 110 and respectively abut against the third mounting groove 120 and the fourth mounting groove 130, complete the installation of the heat exchange fan 400, and make the rotation state of the whole machine more stable.

[0105] In some embodiments, the air conditioner indoor unit further includes a fan bearing, and the fan bearing is disposed at an end of the transmission shaft 800 away from the heat exchange motor 500 .

[0106] In the present application, the housing 100 has a top and a bottom, and the height direction of the housing 100 is from the top of the housing 100 to the bottom of the housing 100. The housing 100 also has a width direction, wherein the width direction of the housing 100 is from one side of the housing 100 to the other side thereof in the left-right direction. The housing 100 has a front side and a rear side that are arranged opposite to each other. Among them, the side of the housing 100 facing the user is the front side of the housing 100, and the front side of the housing 100 to the rear side of the housing 100 is the front-to-back direction of the housing 100.

[0107] The housing 100 is provided with a first cavity and a second cavity, the first cavity is arranged behind the second cavity, the housing 100 has an air conditioning inlet 101 connected to the first cavity, the housing 100 has an air conditioning outlet 102 connected to the second cavity, the air conditioning inlet 101 and the air conditioning outlet 102 are rectangular, the indoor heat exchanger 200 is arranged in the second cavity, the heat exchange volute 300 is arranged in the first cavity, the heat exchange fan 400 is arranged in the heat exchange volute 300, the number of the heat exchange volute 300 is at least two, the number of the heat exchange fans 400 is the same as the number of the heat exchange volute 300 and is arranged one by one. The heat exchange motor 500 and the heat exchange fan 400 are arranged side by side along the length direction of the housing 100.

[0108] The air-conditioning inlet 101 serves as an inlet for the external air to flow into the shell 100, and the air-conditioning outlet 102 serves as an outlet for the air to flow out after heat exchange in the shell 100. The indoor air outside the shell 100 enters the shell 100 through the air-conditioning inlet 101, and is finally discharged to the room through the air-conditioning outlet 102. The indoor heat exchanger 200 is used to exchange heat with the indoor air entering the first cavity, and the heat exchange fan is used to provide power for the flow of indoor air.

[0109] In some embodiments, a filter assembly is provided at the air inlet 101 of the air conditioner to filter the air entering the first cavity from the air inlet 101 of the air conditioner; the filter assembly is arranged at the air inlet 101 of the air conditioner through a mounting frame; the mounting frame is a quadrilateral frame structure and a mounting frame opening connected to the air inlet 101 of the air conditioner is provided in the middle part; the mounting frame is provided with an installation cavity extending along the length direction of the shell 100, and the filter assembly is located in the installation cavity and is pulled out in the installation cavity along the length direction of the air conditioner to install or remove the filter assembly.

[0110] In some embodiments, the air conditioner indoor unit also includes a water receiving pan, which is used to collect condensed water flowing down from the indoor heat exchanger 200 when the air conditioner indoor unit is working. The water receiving pan is provided with a drain port to discharge the condensed water in the water receiving pan out of the air conditioner indoor unit.

[0111] In some embodiments, the water receiving tray may be integrally formed with the bottom plate of the housing 100; the water receiving tray has a water receiving tray bottom surface, and the water receiving tray bottom surface may be a plane.

[0112] In some embodiments, the water receiving tray may be tilted, the water receiving tray may be tilted from where it supports the indoor heat exchanger 200 to away from where it supports the indoor heat exchanger 200, and the drainage hole of the water receiving tray may be provided at where it supports the indoor heat exchanger 200.

[0113] In some embodiments, the transmission shaft 800 is an aluminum alloy shaft, which is made by milling, drilling or extrusion molding of aluminum alloy materials. The material is light, has strong oxidation resistance, and is strong and durable. It can reduce the total weight of the transmission shaft 800 and improve the stability and rotation efficiency of the transmission shaft 800.

[0114] In some embodiments, the first mounting groove 600 , the second mounting groove 900 , the third mounting groove 120 , and the fourth mounting groove 130 have a better effect in the application of duct machines or ceiling-mounted machines, thereby improving the assembly efficiency of the entire machine.

[0115] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An air conditioner indoor unit, characterized in that: It includes: A housing, wherein the rear side of the housing has an air-conditioning air inlet, and the front side of the housing has an air-conditioning air outlet; An indoor heat exchanger, the indoor heat exchanger is arranged in the shell, and the indoor heat exchanger is close to the air outlet of the air conditioner; A heat exchange volute, the heat exchange volute is arranged in the shell, and the heat exchange volute is close to the air inlet of the air conditioner; A heat exchange fan, the heat exchange fan is arranged in the heat exchange volute, the heat exchange fan comprises an impeller part and a fan sleeve, and the impeller part is coaxially sleeved on the fan sleeve; a heat exchange motor, wherein the heat exchange motor and the heat exchange fan are spaced apart along the length direction of the shell, the output shaft of the heat exchange motor coaxially penetrates and is connected to the fan sleeve, and the heat exchange motor is used to drive the heat exchange fan to rotate, so that indoor air enters the shell through the air inlet of the air conditioner, and then flows through the indoor heat exchanger and then flows into the room through the air outlet of the air conditioner; A first mounting groove, wherein the first mounting groove is formed on an outer peripheral wall of an output shaft of the heat exchange motor, and the first mounting groove is coaxially arranged with the output shaft of the heat exchange motor; A threaded connector is provided along the radial direction of the fan sleeve and is threadedly connected to the fan sleeve, and abuts against the groove wall of the first mounting groove, so that the heat exchange fan and the output shaft of the heat exchange motor are fixedly connected.

2. The air conditioner indoor unit according to claim 1, characterized in that: The heat exchange motor has two output shafts, which are coaxially arranged on both sides of the heat exchange motor, and the number of the first mounting grooves is the same as the number of the output shafts of the heat exchange motor and are arranged in a one-to-one correspondence.

3. An air conditioner indoor unit, characterized in that: It includes: A housing, wherein the rear side of the housing has an air-conditioning air inlet, and the front side of the housing has an air-conditioning air outlet; An indoor heat exchanger, the indoor heat exchanger is arranged in the shell, and the indoor heat exchanger is close to the air outlet of the air conditioner; A heat exchange volute, the heat exchange volute is arranged in the shell, and the heat exchange volute is close to the air inlet of the air conditioner; A heat exchange fan, the heat exchange fan is arranged in the heat exchange volute, the heat exchange fan comprises an impeller part and a fan sleeve, and the impeller part is coaxially sleeved on the fan sleeve; a heat exchange motor, wherein the heat exchange motor and the heat exchange fan are spaced apart along the length direction of the shell, the output shaft of the heat exchange motor coaxially penetrates and is connected to the fan sleeve, and the heat exchange motor is used to drive the heat exchange fan to rotate, so that indoor air enters the shell through the air inlet of the air conditioner, and then flows through the indoor heat exchanger and then flows into the room through the air outlet of the air conditioner; A transmission shaft, wherein the length direction of the transmission shaft is the same as the length direction of the housing, one end of the transmission shaft is connected to the heat exchange motor, and the other end of the transmission shaft coaxially passes through and is connected to the fan sleeve; A second mounting groove, the second mounting groove is formed on the outer peripheral wall of the transmission shaft, and the second mounting groove is coaxially arranged with the transmission shaft; A threaded connector is provided along the radial direction of the fan sleeve and is threadedly connected to the fan sleeve, and abuts against the groove wall of the second mounting groove, so that the heat exchange fan and the transmission shaft are fixedly connected.

4. The air conditioner indoor unit according to claim 3, characterized in that: A plurality of the second mounting grooves are spaced apart along the length direction of the transmission shaft, and the number of the heat exchange fans is the same as the number of the second mounting grooves and are arranged in a one-to-one correspondence.

5. The air conditioner indoor unit according to claim 3, characterized in that: It also includes a coupling, which is arranged between the transmission shaft and the output shaft of the heat exchange motor. The outer wall of the transmission shaft at one end close to the coupling is coaxially provided with an annular third mounting groove, and the threaded connector is penetrated along the radial direction of the coupling and threadedly connected to the coupling, and abuts against the groove wall of the third mounting groove.

6. The air conditioner indoor unit according to claim 5, characterized in that: A fourth annular mounting groove is coaxially provided on the outer peripheral wall of one end of the output shaft of the heat exchange motor close to the coupling. The threaded connector penetrates the coupling radially and is threadedly connected to the coupling and abuts against the groove wall of the fourth mounting groove.

7. The air conditioner indoor unit according to claim 1 or 3, characterized in that: The impeller part includes a fan blade and a hub. The fan blade is composed of a plurality of blades. The fan blade is coaxially arranged on the outer peripheral wall of the hub. The hub is coaxially sleeved on the fan shaft sleeve.

8. The air conditioner indoor unit according to claim 7, characterized in that: The wheel hub is provided with a clearance groove, the position of the clearance groove corresponds to the position of the threaded connector, and the clearance groove is used to make way for the installation of the threaded connector.

9. The air conditioner indoor unit according to claim 1 or 3, characterized in that: The threaded connection piece is a screw, a threaded hole is radially provided in the fan sleeve, and the screw is threadedly connected to the threaded hole.

10. The air conditioner indoor unit according to claim 1 or 3, characterized in that: A volute air inlet and a volute air outlet are formed on the heat exchange volute. The volute air inlet is communicated with the air inlet of the air conditioner, and the volute air outlet is arranged toward the indoor heat exchanger.

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