Air conditioner outdoor unit

Abstract

The utility model provides an air conditioner outdoor unit which comprises a machine shell. A heat exchange air inlet; a heat exchange air outlet; an outdoor heat exchanger; a first fan; the draught fan assembly is arranged at the top of the machine shell and comprises a shell body and a draught fan assembly, a fan air inlet; a fan air outlet; a second fan; the fastening assembly comprises a fastening piece which is used for connecting the machine shell and the shell; the first connecting piece is connected with the machine shell, a through hole is formed in the first connecting piece, and the through hole corresponds to the second open hole; the second connecting piece is arranged in the shell, located above the first open hole and used for being connected with the fastening piece; the top of the fastener penetrates through the first open hole, the second connecting piece is connected with the top of the fastener to connect at least part of the shell with the fastener, the bottom of the fastener is inserted into the through hole, and the fastener is connected with the first connecting piece to enable the fastener to be connected with the machine shell, so that the fan assembly is conveniently installed to guarantee the air outlet capacity of the air conditioner outdoor unit.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an outdoor unit of an air conditioning. Background Art

[0002] Air conditioners are widely used to adjust indoor temperature. Air conditioners include indoor units and outdoor units. The indoor unit is installed indoors and can be used to exchange heat with indoor air. The outdoor unit is installed outdoors and can be used to exchange heat in the refrigerant with outdoor air.

[0003] The outdoor unit of the air conditioner includes a casing, a first cavity is arranged in the casing, an outdoor heat exchanger is arranged in the first cavity, and the refrigerant in the outdoor heat exchanger exchanges heat with the air to realize the cooling or heating function of the air conditioner. A first fan is also arranged in the first cavity, and the first fan is used to drive the outdoor air to flow through the outdoor heat exchanger for heat exchange, and then drive the heat-exchanged air to flow out to the outdoors.

[0004] As outdoor installation scenarios are complex and changeable, it is difficult to install the air conditioner outdoor unit in a small installation space.

[0005] When the air conditioner outdoor unit needs to be installed in a small space, an external air duct is required, or in a severe environment with high external static pressure such as typhoons and rainstorms, the first fan cannot maintain normal air volume, resulting in the air exchange capacity of the air conditioner being unable to meet the preset requirements. The air volume of the air conditioner outdoor unit is severely attenuated, and the air conditioning unit has poor ability to resist external static pressure. Utility Model Content

[0006] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0007] To this end, according to an embodiment of the present disclosure, an air conditioner outdoor unit is proposed, comprising:

[0008] A casing having a first cavity disposed therein and a second opening disposed on the casing;

[0009] A heat exchange air inlet is arranged on the casing;

[0010] The heat exchange air outlet is arranged on the housing, and the heat exchange air inlet and the heat exchange air outlet are connected to the first cavity;

[0011] An outdoor heat exchanger is disposed in the first chamber;

[0012] A first fan is disposed in the first cavity, and is used to drive outdoor air to flow through the outdoor heat exchanger through the heat exchange air inlet and out through the heat exchange air outlet;

[0013] The fan assembly is arranged on the top of the casing. The fan assembly is detachably connected to the casing through a fastening assembly. The fan assembly includes:

[0014] A shell is arranged on the top of the casing, a second cavity is formed inside the shell, and a first opening is provided on the shell;

[0015] The fan air inlet is arranged on the housing, and the fan air inlet is arranged opposite to the heat exchange air outlet;

[0016] The fan air outlet is arranged on the housing, and the fan air inlet and the fan air outlet are connected to the second cavity;

[0017] A second fan is arranged inside the housing, and is used to drive the air in the first chamber into the second chamber through the fan air inlet, and then discharged to the outside through the fan air outlet;

[0018] The fastening assembly includes:

[0019] A fastener used to connect the casing and the housing;

[0020] A first connecting member connected to the housing, the first connecting member is provided with a through hole, and the through hole is arranged corresponding to the second opening;

[0021] A second connecting member is disposed in the housing and is located above the first opening, and the second connecting member is used to connect the fastener;

[0022] The top of the fastener is provided with a first opening, the second connecting member is connected to the top of the fastener to connect at least part of the shell to the fastener, the bottom of the fastener is inserted into the through hole, and the fastener is connected to the first connecting member to connect the fastener to the shell.

[0023] The present application connects a fan assembly to the top of the casing of the air-conditioning outdoor unit, and reduces the air resistance of the first fan during rotation by rotating the second fan in the fan assembly, thereby increasing the rotational work of the first fan and the air output of the air-conditioning outdoor unit. In this way, the air-conditioning outdoor unit can still maintain a preset air output in an environment with high external static pressure, thereby improving the air-conditioning outdoor unit's ability to resist external static pressure. The fastening assembly of the present application facilitates disassembly and maintenance of the fan assembly.

[0024] In some embodiments of the present application, the first connecting member is disposed in the first opening, and the first connecting member is provided with a protrusion extending toward the middle of the through hole;

[0025] The fastener is provided with a recessed portion, which is recessed toward the inside of the fastener;

[0026] The bottom of the fastener is inserted into the through hole, and the protrusion matches with the recessed portion to connect the fastener to the housing.

[0027] The present application also provides an air conditioner outdoor unit, comprising:

[0028] A casing having a first cavity disposed therein and a second opening disposed on the casing;

[0029] A heat exchange air inlet is arranged on the casing;

[0030] The heat exchange air outlet is arranged on the housing, and the heat exchange air inlet and the heat exchange air outlet are connected to the first cavity;

[0031] An outdoor heat exchanger is disposed in the first chamber;

[0032] A first fan is disposed in the first cavity, and is used to drive outdoor air to flow through the outdoor heat exchanger through the heat exchange air inlet and out through the heat exchange air outlet;

[0033] The fan assembly is arranged on the top of the casing. The fan assembly is detachably connected to the casing through a fastening assembly. The fan assembly includes:

[0034] A shell is arranged on the top of the casing, a second cavity is formed inside the shell, and a first opening is provided on the shell;

[0035] The fan air inlet is arranged on the housing, and the fan air inlet is arranged opposite to the heat exchange air outlet;

[0036] The fan air outlet is arranged on the housing, and the fan air inlet and the fan air outlet are connected to the second cavity;

[0037] A second fan is arranged inside the housing, and is used to drive the air in the first chamber into the second chamber through the fan air inlet, and then discharged to the outside through the fan air outlet;

[0038] The fastening assembly includes:

[0039] A fastener, the top of which is provided with a first opening, the bottom of which is provided with a second opening, and the fastener is provided with a recessed portion;

[0040] A first connecting member connected to the housing, the first connecting member is provided with a through hole, the through hole is arranged corresponding to the second opening, and the first connecting member is provided with a protrusion protruding toward the middle of the through hole;

[0041] A second connecting member, disposed in the housing, and used for connecting the fastener;

[0042] The second connecting member is connected to the top of the fastener to connect at least part of the shell to the fastener, the bottom of the fastener is inserted into the through hole, and the protrusion cooperates with the recessed part to connect the fastener to the shell.

[0043] In some embodiments of the present application, the housing includes a top plate, at least a portion of the top plate is located at the top of the housing, and the second opening is provided on the top plate;

[0044] The shell includes a connecting plate, at least a portion of which is located at the bottom of the shell, and the first opening is provided on the connecting plate;

[0045] The second connecting member is connected to the top of the fastener to connect the connecting plate to the fastener; the bottom of the fastener is inserted into the through hole and the second opening to connect the fastener to the first connecting member.

[0046] In some embodiments of the present application, the fastener includes: a first boss, the first boss is located above the recessed portion;

[0047] When the second connecting member is connected to the top of the fastener, at least part of the shell is located between the second connecting member and the first boss, and the second connecting member connects the fastener to the shell.

[0048] In some embodiments of the present application, the fastener further includes: a second boss, the second boss being located below the recessed portion;

[0049] When the fastener is inserted into the through hole, the protrusion is elastically deformed to abut against the second boss;

[0050] When the fastener is inserted into the recessed portion and matched with the protrusion, the protrusion is located between the first boss and the second boss.

[0051] In some embodiments of the present application, the fastening assembly further includes: a shock absorbing pad, the shock absorbing pad being disposed between the casing and the housing;

[0052] The housing further comprises: a protruding portion, the protruding portion protrudes in a direction away from the housing, a third cavity is formed on a side of the protruding portion close to the housing; the first opening is arranged on the protruding portion;

[0053] After the shell and the casing are connected by the fastening assembly, at least part of the shock-absorbing pad is located in the third cavity.

[0054] In some embodiments of the present application, the first connecting member further includes: a limiting portion, which is disposed on the periphery of the first connecting member, and the limiting portion cooperates with the second opening to confine the first connecting member in the second opening.

[0055] In some embodiments of the present application, the protrusion on the first connecting member is made of flexible material, and the protrusion and the first connecting member are integrally formed.

[0056] In some embodiments of the present application, the rotation axis of the first fan is arranged to coincide with the rotation axis of the second fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0058] Figure 1 is a diagram of an air conditioner outdoor unit according to an embodiment of the present application;

[0059] Figure 2 The whole machine of the air conditioner outdoor unit according to the embodiment of the present application Figure 2 ;

[0060] Figure 3 The whole machine of the air conditioner outdoor unit according to the embodiment of the present application Figure 3 ;

[0061] Figure 4 is a diagram of a fastening assembly of an air conditioner outdoor unit according to an embodiment of the present application;

[0062] Figure 5 It is a parts diagram of a fastening assembly of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0063] Figure 6 It is a parts diagram of a fastening assembly of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0064] Figure 7 It is a parts diagram of a fastening assembly of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0065] Figure 8 It is a parts diagram of a fastening assembly of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0066] Fig. 9 is an internal diagram of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0067] Fig.10 is an internal diagram of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0068] Fig.11 It is a fan position diagram of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0069] Fig.12 It is a fan position diagram of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0070] Fig.13 It is a fan position diagram of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0071] Fig.14 is a fan assembly diagram of an air conditioner outdoor unit according to an embodiment of the present application;

[0072] Fig.15 It is a location diagram of an electrical box of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0073] Fig.16 is a fan assembly diagram of an air conditioner outdoor unit according to an embodiment of the present application;

[0074] Fig.17 is a fan assembly diagram of an air conditioner outdoor unit according to an embodiment of the present application;

[0075] Fig.18 This is a diagram of an electrical box of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0076] Fig.19 is an internal diagram of an electrical appliance of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0077] Fig. 20 is a flow chart of synchronous speed of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0078] Fig.21 is a flow chart of synchronous speed of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0079] Fig. 22 is a flow chart of asynchronous speed of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0080] Fig.23 It is a fan position diagram of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0081] Fig.24 is a distance B diagram of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0082] Fig.25 It is a distance A diagram of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0083] Fig.26 is a flow chart of confirming the optimal a and b values ​​of an air conditioner outdoor unit according to an embodiment of the present application;

[0084] Fig. 27 It is a flow chart of an air conditioner outdoor unit confirming a and b values ​​that meet noise setting requirements according to an embodiment of the present application.

[0085] In the above figures: housing 1; first cavity 11; heat exchange air inlet 12; heat exchange air outlet 13; second opening 14; top plate 15; outdoor heat exchanger 2; first fan 3; fan assembly 4; housing 41; fan air inlet 411; fan air outlet 412; second cavity 413; connecting plate 414; first opening 4141; protrusion 415; third cavity 4151; second fan 42; fastening assembly 5; fastener 51; recess 511; first boss 512; second boss 513; first connecting member 52; through hole 521; protrusion 522; limiter 523; second connecting member Part 53; shock-absorbing pad 54; electrical box 6; box bottom plate 61; first ventilation hole 611; box top plate 62; second ventilation hole 621; shielding plate 63; heat dissipation duct 631; shielding main board 632; baffle plate 633; ​​duct plate 7; third ventilation hole 71; fourth ventilation hole 72; connecting bottom plate 81; connecting top plate 82; heat dissipation air cavity 91; air outlet cavity 92; first upper fan 101; first position point 1011; third position point 1012; second upper fan 102; second position point 1021; first lower fan 103; fourth position point 1031; second lower fan 104. DETAILED DESCRIPTION

[0086] 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.

[0087] The air conditioner includes an indoor unit and an outdoor unit. The installation scenarios of the outdoor unit are complex and varied. For example, when the outdoor unit is installed in a small space, requires an external air duct, or is installed in a harsh high static pressure environment such as a typhoon or rainstorm, the fan assembly in the outdoor unit is difficult to maintain normal air volume, resulting in the air conditioner's heat exchange capacity being unable to meet the preset requirements, and the air volume of the outdoor unit is severely attenuated, affecting the air conditioner's ability to resist the static pressure outside the machine.

[0088] Here, the air conditioner's ability to resist external static pressure refers to the external system resistance or pressure that the air conditioner can withstand when running.

[0089] In order to solve the above problems, some embodiments of the present disclosure provide an air conditioner outdoor unit.

[0090] See also Figure 1-Figure 9 The present embodiment provides an air conditioner outdoor unit, the air conditioner may include an air conditioner indoor unit and an air conditioner outdoor unit, the air conditioner indoor unit is installed in an indoor space. The air conditioner outdoor unit is usually installed outdoors for heat exchange in an outdoor environment.

[0091] The air conditioner outdoor unit may include a casing 1, and a first cavity 11 is arranged in the casing 1. A heat exchange air inlet 12 is arranged on the casing 1, and the heat exchange air inlet 12 is connected to the outdoor space.

[0092] The housing 1 is provided with a heat exchange air outlet 13 , and the heat exchange air inlet 12 and the heat exchange air outlet 13 are in communication with the first cavity 11 .

[0093] An outdoor heat exchanger 2 may be disposed in the first cavity 11 . A refrigerant flows in the outdoor heat exchanger 2 . The refrigerant can be used to exchange heat with the air entering the first cavity 11 and flowing through the outdoor heat exchanger 2 .

[0094] A first fan 3 may be provided in the first chamber 11 , and the first fan 3 may be used to drive outdoor air to flow through the indoor heat exchanger in the first chamber 11 through the heat exchange air inlet 12 , and the air after flowing through the indoor heat exchanger flows out through the heat exchange air outlet 13 .

[0095] In some embodiments, the housing 1 has a top and a bottom, and the height direction of the housing 1 is from the bottom of the housing 1 to the top of the housing 1. The housing 1 also has a width direction, wherein the width direction of the housing 1 is from one side of the housing 1 in the left-right direction to the other side thereof. The housing 1 has a front side and a rear side that are arranged opposite to each other, and the front side, the rear side, the left side, and the right side of the housing 1 are the sides of the housing 1 in the circumferential direction.

[0096] In some embodiments, the outdoor heat exchanger 2 can be configured to be arc-shaped, and the outdoor heat exchanger 2 can be arranged along the circumferential direction of the casing 1 and around the inner wall of the casing 1. The heat exchange air inlet 12 can be arranged in the circumferential direction of the casing 1, and the outdoor heat exchanger 2 is arranged at a position corresponding to the heat exchange air inlet 12, so that when the outdoor air flows into the first cavity 11 through the heat exchange air inlet 12, the outdoor air flows through the outdoor heat exchanger 2 to exchange heat with the refrigerant in the outdoor heat exchanger 2, thereby improving the heat exchange effect of the outdoor heat exchanger 2.

[0097] In some embodiments, the air-conditioning outdoor unit may include a compressor, which is arranged in the first cavity 11 and installed at the bottom of the air-conditioning outdoor unit. The compressor is arranged on the leeward side of the arc-shaped outdoor heat exchanger 2. The outdoor air needs to flow through the outdoor heat exchanger 2 to exchange heat with the refrigerant in the outdoor heat exchanger 2. The air after heat exchange flows through the compressor to take away the heat generated by the operation of the compressor, thereby avoiding excessive temperature of the compressor and ensuring stable operation of the compressor.

[0098] In some embodiments, the air-conditioning outdoor unit may include a throttling device, which is arranged in the first chamber 11 and is used to expand the liquid refrigerant in a high-temperature and high-pressure state into a low-pressure liquid refrigerant. The throttling device can be arranged on the leeward side of the outdoor heat exchanger 2, which can be easily connected to the compressor.

[0099] The air conditioner performs the refrigeration cycle of the air conditioner by using a compressor, an outdoor heat exchanger 2, a throttling device and an indoor heat exchanger. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the air that has been conditioned and heat exchanged.

[0100] 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 outdoor heat exchanger 2.

[0101] The outdoor heat exchanger 2 condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0102] The throttling device expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the outdoor heat exchanger 2 into a low-pressure liquid-phase refrigerant.

[0103] The indoor heat exchanger evaporates the refrigerant expanded in the throttling device and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor.

[0104] The indoor heat exchanger can achieve the cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the whole cycle, the air conditioner can adjust the temperature of the indoor space.

[0105] Of the indoor heat exchanger and the outdoor heat exchanger 2, one is a condenser and the other is an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

[0106] When the air-conditioning outdoor unit needs to be installed in a small space, an external air duct is required, or in a severe environment with high external static pressure such as typhoons and rainstorms, the first fan 3 in the casing 1 cannot maintain normal air volume. At this time, the heat exchange rate between the outdoor air of the air conditioner and the outdoor heat exchanger 2 cannot meet the preset requirements, the air volume of the air-conditioning indoor unit is severely attenuated, and the air-conditioning unit has the problem of poor resistance to external static pressure.

[0107] The air conditioner outdoor unit includes a fan assembly 4, which is arranged on the top of the housing 1. The fan assembly 4 is used to increase the air volume of the air conditioner outdoor unit and improve the ability of the air conditioner outdoor unit to resist the static pressure outside the machine. The fan assembly 4 is detachably connected to the housing 1 through a fastening assembly 5, which is convenient for the optional installation of the fan assembly 4 in an environment with high static pressure outside the machine to improve the ability of the air conditioner outdoor unit to resist the static pressure outside the machine, and also facilitates the disassembly and maintenance of the fan assembly 4.

[0108] In some embodiments, the fan assembly 4 may include a shell 41 , which is disposed on the top of the casing 1 , and a second cavity 413 is formed inside the shell 41 .

[0109] The housing 41 is provided with a fan air inlet 411 , which is arranged opposite to the heat exchange air outlet 13 , and the fan air inlet 411 is communicated with the second chamber 413 .

[0110] The housing 41 is provided with a fan outlet 412 , which is in communication with the outdoor space. The fan outlet 412 and the fan inlet 411 are in communication with the second chamber 413 .

[0111] In some embodiments, a second fan 42 is disposed in the second chamber 413 , and the second fan 42 is used to drive the air in the first chamber 11 into the second chamber 413 through the fan air inlet 411 , and then discharged to the outside through the fan air outlet 412 .

[0112] In some embodiments, the housing 41 has a top and a bottom, and the height direction of the housing 41 is from the bottom of the housing 41 to the top of the housing 41, and the height direction of the housing 41 is the same as the height direction of the housing 1. The housing 41 also has a width direction, wherein the width direction of the housing 41 is from one side of the housing 41 in the left-right direction to the other side thereof, and the width direction of the housing 41 is the same as the width direction of the housing 1. The housing 41 has a front side and a rear side that are arranged oppositely, and the front side, rear side, left side, and right side of the housing 41 are the sides of the housing 41 in the circumferential direction.

[0113] In some embodiments, the fan air inlet 411 and the fan air outlet 412 are respectively arranged at opposite ends of the housing 41 in the height direction, that is, the fan air inlet 411 is arranged at the bottom of the housing 41, and the fan air outlet 412 is arranged at the top of the housing 41. The heat exchange air outlet 13, the fan air inlet 411 and the fan air outlet 412 are connected in the height direction of the housing 41 to reduce the wind energy loss when the air flow direction inside the housing 1 and the housing 41 changes.

[0114] In some embodiments, the fastening assembly 5 may include a fastener 51, and the fastener 51 is used to connect the housing 1 and the shell 41. The housing 1 is provided with a second opening 14, and the shell 41 is provided with a first opening 4141. The top of the fastener 51 is provided with the first opening 4141, and the bottom of the fastener 51 is provided with the second opening 14, and the housing 1 and the shell 41 are connected together by the fastener 51.

[0115] In some embodiments, the fastening assembly 5 may include a first connecting member 52, and the first connecting member 52 is connected to the housing 1. A through hole 521 is provided on the first connecting member 52, and the through hole 521 is provided corresponding to the second opening 14, so that the fastener 51 passes through the second opening 14 and the through hole 521, and the fastener 51 passes through the through hole 521 to connect with the first connecting member 52, so that the fastener 51 is connected to the housing 1 by connecting with the first connecting member 52.

[0116] In some embodiments, the fastening assembly 5 may include a second connecting member 53 , which is disposed in the housing 41 and located above the first opening 4141 . The second connecting member 53 is used to connect the fastener 51 .

[0117] A first opening 4141 is formed at the top of the fastener 51, and the second connecting member 53 is connected to the top of the fastener 51 to connect at least part of the shell 41 to the fastener 51. The bottom of the fastener 51 is inserted into the through hole 521, and the fastener 51 is connected to the first connecting member 52 so that the fastener 51 is connected to the shell 41.

[0118] By connecting the fan assembly 4 at the top of the casing 1 of the air conditioner outdoor unit, the air resistance of the first fan 3 during rotation is reduced by the rotation of the second fan 42 in the fan assembly 4, thereby increasing the rotation work of the first fan 3 and the air volume of the air conditioner outdoor unit, so that in an environment with high external static pressure, the air conditioner outdoor unit can still maintain a preset air volume, thereby improving the ability of the air conditioner outdoor unit to resist external static pressure. The method of connecting the fan assembly 4 at the top of the casing 1 of the present application is convenient for installation, and is convenient for disassembly and maintenance of the fan assembly 4.

[0119] In some embodiments, the first connecting member 52 is disposed in the first opening 4141 , and the first connecting member 52 may include a protrusion 522 extending toward the middle of the through hole 521 , and the protrusion 522 is disposed on the first connecting member 52 .

[0120] In some embodiments, the fastener 51 may include a recessed portion 511, which is recessed toward the inside of the fastener 51. The bottom of the fastener 51 is inserted into the through hole 521, and the protrusion 522 cooperates with the recessed portion 511 to connect the fastener 51 to the housing 1. The protrusion 522 is inserted into the recessed portion 511 to limit the shaking of the fastener 51 in the up and down directions. When the recessed portion 511 is disengaged from the protrusion 522 by external force, the fastener 51 is disengaged from the first connecting member 52, and the fan assembly 4 can be disassembled for maintenance.

[0121] In some embodiments, the protrusion 522 protrudes toward the middle portion close to the through hole 521 so that the protrusion 522 can cooperate with the recess 511 and the protrusion 522 can be inserted into the recess 511 to limit the up and down movement of the fastener 51 .

[0122] The second connecting member 53 is connected to the top of the fastener 51 to connect at least part of the shell 41 to the fastener 51, the bottom of the fastener 51 is inserted into the through hole 521, and the protrusion 522 cooperates with the recessed portion 511 to connect the fastener 51 to the casing 1.

[0123] In some embodiments, the housing 1 may include a top plate 15 , at least a portion of the top plate 15 is located at the top of the housing 1 , and the second opening 14 is disposed on the top plate 15 .

[0124] In some embodiments, the housing 41 may include a connecting plate 414 , at least a portion of the connecting plate 414 is located at the bottom of the housing 1 , and the first opening 4141 is disposed on the connecting plate 414 .

[0125] The second connecting member 53 is connected to the top of the fastener 51 to connect the connecting plate 414 to the fastener 51, and the bottom of the fastener 51 is inserted into the through hole 521 and the second opening 14 to connect the fastener 51 to the first connecting member 52. The casing 1 and the shell 41 are connected by the fastening assembly 5 to achieve a detachable connection, which is convenient for optional installation of the fan assembly 4 and disassembly of the fan assembly 4 for maintenance.

[0126] In some embodiments, the fastener 51 may include a first boss 512, and the first boss 512 is located above the recessed portion 511. When the second connecting member 53 is connected to the top of the fastener 51, at least part of the housing 41 is located between the second connecting member 53 and the first boss 512. The second connecting member 53 is connected to the top of the fastener 51, and can press part of the housing 41 and the first boss 512, so that the housing 41 and the fastener 51 are connected more tightly.

[0127] In some embodiments, when the fastener 51 is installed with the casing 1 and the shell 41, the axial direction of the fastener 51 is defined to be the same as the height direction of the casing 1, the radial direction of the fastener 51 is perpendicular to the axial direction of the fastener 51, and the first boss 512 can be set to extend along the radial direction of the fastener 51.

[0128] In some embodiments, the first boss 512 may be configured in a ring shape to surround the fastener 51 , thereby increasing the contact area between the first boss 512 and the housing 41 , thereby improving the connection effect between the housing 41 and the first boss 512 .

[0129] In some embodiments, the fastener 51 may include: a second boss 513, and the second boss 513 is located below the recessed portion 511. When the bottom of the fastener 51 is inserted into the through hole 521, the protrusion 522 can produce elastic deformation to abut against the second boss 513. When the fastener 51 is inserted into the recessed portion 511 and matched with the protrusion 522, the protrusion 522 is located between the first boss 512 and the second boss 513. The first boss 512 and the second boss 513 can be used to limit the protrusion 522 and prevent the protrusion 522 from falling off from the recessed portion 511, thereby facilitating the connection between the fastener 51 and the first connecting member 52.

[0130] In some embodiments, the fastening assembly 5 may include a shock absorbing pad 54, which is disposed between the casing 1 and the housing 41. The shock absorbing pad 54 may be used to reduce vibration and noise caused by the operation of the air conditioner outdoor unit after the casing 1 and the housing 41 are connected. The shock absorbing pad 54 may be made of a flexible material, such as a rubber material, to improve the shock absorption effect.

[0131] In some embodiments, the shell 41 may include a protrusion 415, which protrudes in a direction away from the casing 1, and a third cavity 4151 is formed on a side of the protrusion 415 close to the casing 1, and the first opening 4141 is arranged on the protrusion 415, and the third cavity 4151 is connected to the first opening 4141.

[0132] After the shell 41 is connected to the casing 1 through the fastening assembly 5, at least part of the shock-absorbing pad 54 is located in the third cavity 4151. The third cavity 4151 can be used to accommodate the shock-absorbing pad 54 to reduce the connection gap between the casing 1 and the shell 41 and improve the connection strength between the shell 41 and the casing 1.

[0133] The third cavity 4151 can also be used to accommodate the first boss 512 , thereby reducing the connection gap between the housing 1 and the shell 41 .

[0134] In some embodiments, the height direction of the shock-absorbing pad 54 is in the same direction as the height direction of the casing 1, and the depth direction of the third cavity 4151 is in the same direction as the height direction of the shock-absorbing pad 54. The height of the shock-absorbing pad 54 can be set to be greater than the depth of the third cavity 4151, which can buffer the compression of the shock-absorbing pad 54 caused by the weight of the fan assembly 4 itself, and can also improve the shock-absorbing effect of the shock-absorbing pad 54, thereby improving the installation convenience and reliability.

[0135] It can be set that the distance between the two points of the shock absorbing pad 54 that are farthest apart in the height direction of the shock absorbing pad 54 and projected onto the plane parallel to the height direction of the shock absorbing pad 54 is defined as the height of the shock absorbing pad 54. The distance between the two points of the third cavity 4151 that are farthest apart in the depth direction of the third cavity 4151 and projected onto the plane parallel to the depth direction of the third cavity 4151 is defined as the depth of the third cavity 4151.

[0136] In some embodiments, the first connector 52 may include a limiting portion 523, which is disposed on the periphery of the first connector 52, and the limiting portion 523 cooperates with the second opening 14 to limit the first connector 52 in the second opening 14. The limiting portion 523 may be configured to be recessed toward the inside of the first connector 52, so that the first connector 52 can be clamped on the housing 1 at the first opening 4141 through the limiting portion 523.

[0137] In some embodiments, the limiting portion 523 can be configured as an annular groove surrounding the periphery of the first connecting member 52, so that the casing 1 around the first opening 4141 can be installed into the annular groove, thereby improving the connection effect between the first connecting member 52 and the casing 1.

[0138] In some embodiments, the protrusion 522 on the first connecting member 52 is integrally formed with the first connecting member 52 to improve the connection strength between the protrusion 522 and the first connecting member 52. The protrusion 522 is supported by a flexible material, so that when the bottom of the fastener 51 is inserted into the through hole 521, the protrusion 522 can produce elastic deformation to abut against the second boss 513. When the protrusion 522 cooperates with the recessed portion 511, the protrusion 522 cooperates with the recessed portion 511 to play a limiting role, prevent the movement of the connecting member, improve the connection effect between the fastener 51 and the first connecting member 52, and prevent the fastener 51 from being disconnected from the first connecting member 52.

[0139] In some embodiments, the second fan 42 is arranged above the first fan 3, and the rotation axis of the first fan 3 is arranged to coincide with the rotation axis of the second fan 42, so that the first fan 3 and the second fan 42 are aligned in the height direction of the casing 1, which can reduce the wind resistance. The first fan 3 is more responsible for suction, and the second fan 42 is more responsible for blowing, which can maximize the optimization of the air volume of the whole machine and make the air outlet smoother.

[0140] In some embodiments, the second connecting member 53 can be configured as a nut, and a thread is provided on the top of the fastener 51. The nut cooperates with the thread, and the shell 41 is tightly connected to the housing 1 by rotating the nut to press downward.

[0141] In some embodiments, the fastener 51 may be a threaded connector, and the fastener 51 may be any one of a bolt, a threaded rod, and a screw.

[0142] In some embodiments, the outer edge of the first connecting member 52 may be configured to be circular and extend along the edge of the second opening 14 , so that the first connecting member 52 can be better fitted and connected to the housing 41 at the second opening 14 .

[0143] In some embodiments, the peripheral edge of the first connecting member 52 may be configured as an open arc extending along the edge of the second opening 14 , so as to facilitate the connection between the second connecting member 53 and the housing 41 at the second opening 14 .

[0144] In some embodiments, four fastening components 5 may be provided, and the four fastening components 5 are respectively provided on four sides or four corners of the air-conditioning outdoor unit to improve the connection stability of the fan component 4.

[0145] In some embodiments, when installing the fan assembly 4, first pass the top of the fastener 51 through the first opening 4141, and fix the second connecting member 53 to the top of the fastener 51, so that the fastener 51 is connected to the housing 41. Install the first connecting member 52 in the second opening 14 of the housing 1, and install the shock-absorbing pad 54 above the first connecting member 52. Hang the fan assembly 4 above the air conditioner outdoor unit, and make the bottom of the fastener 51 correspond to the through hole 521 and the second opening 14. The fastener 51 is inserted into the through hole 521 and the second opening 14 by the gravity of the fan assembly 4 itself, until the protrusion 522 cooperates with the recessed portion 511, thereby limiting the displacement of the fan assembly 4 and achieving the fixation of the fan assembly 4.

[0146] In some embodiments, when the fan assembly 4 needs to be disassembled for maintenance, the second connecting member 53 is disassembled, and the fan assembly 4 can be separated upward by applying external force. After the fan assembly 4 is repaired, the fan assembly 4 is hoisted above the housing 1, the first opening 4141 is assembled corresponding to the top of the fastener 51, and the second connecting member 53 is installed to complete the installation. The fastening assembly 5 of the present application makes the installation and disassembly of the fan assembly 4 very convenient.

[0147] See also Figure 1-Figure 12 In some embodiments, the second fan 42 and the first fan 3 can rotate simultaneously, the second fan 42 can rotate in the same direction or in a different direction relative to the first fan 3, and the second fan 42 can drive the air in the first chamber 11 into the second chamber 413 through the fan air inlet 411, and then be discharged to the outside through the fan air outlet 412.

[0148] The increase in the speed of the second fan 42 can increase the air volume while sharing the air resistance when the first fan 3 rotates, thereby reducing the current of the first fan 3, so that the specifications of the first fan 3 can be smaller than those of the second fan 42, thereby reducing the cost of the first fan 3. After reducing the cost of the first fan 3, the present application can still ensure the air volume flowing out of the fan outlet 412 of the air conditioner outdoor unit due to the provision of the second fan 42.

[0149] In some embodiments, the number of second fans 42 corresponds one-to-one to the number of first fans 3, and the rotation axis of the second fans 42 is arranged to coincide with the rotation axis of the corresponding first fans 3, so that the first fans 3 and the second fans 42 are aligned in the height direction of the casing 1, which can reduce the wind resistance. The lower fans are more responsible for suction and the upper fans are more responsible for blowing, which can maximize the optimization of the overall air volume and make the air outlet smoother.

[0150] In some embodiments, a plane parallel to the height direction of the casing 1 is defined as a first plane, the highest point of the projection of the first fan 3 on the first plane is defined as a first point, and the highest point of the projection of the second fan 42 on the first plane is defined as a second point.

[0151] A plane parallel to the width direction of the casing 1 is defined as a second plane, a projection of the rotation center of the first fan 3 on the second plane is defined as a third point, and a projection of the rotation center of the second fan 42 on the second plane is defined as a fourth point.

[0152] In the height direction of the housing 1 , the distance between the first point and the second point is defined as a first distance H1 . In the width direction of the housing 1 , the distance between the third point and the fourth point is defined as a second distance H2 .

[0153] Since the left-right spacing between the first fan 3 and the second fan 42 is limited by the size of the casing 1 and the housing 41 of the air conditioner outdoor unit, the adjustable range is relatively small, but the upper and lower spacing between the first fan 3 and the second fan 42 has a larger adjustment space. Therefore, when the first distance H1 is too small, the mutual interference between the wind field of the first fan 3 and the second fan 42 increases, so that the air volume of the fan outlet 412 decreases while the noise of the air conditioner outdoor unit also increases. In order to increase the air volume of the fan outlet 412 while reducing the noise of the air conditioner outdoor unit, H1 can be greater than or equal to 0.6H2. Alternatively, H1 can be greater than or equal to 0.7H2. Alternatively, H1 can be greater than or equal to 0.8H2.

[0154] Among them, when the first distance H1 is too large, the distance between the first fan 3 and the second fan 42 increases, resulting in a decrease in the mutual benefit effect between the first fan 3 and the second fan 42, and the second fan 42's ability to share the wind resistance of the first fan 3 decreases, thereby reducing the overall resistance to the static pressure outside the air conditioner outdoor unit. In order to improve the overall resistance to the static pressure outside the air conditioner outdoor unit, H1 can be less than or equal to 0.7H2. H1 can be less than or equal to 0.8H2. H1 can be less than H2.

[0155] In some embodiments, the shortest distance between the rotation center of the second fan 42 and the inner wall of the housing 41 in the width direction of the housing 41 is defined as a third distance H3.

[0156] When the third distance H3 is too small, the size of the second fan of the second fan 42 will be reduced, and the air output of the second fan 42 will be reduced. In order to increase the air output of the second fan 42, H3 can be greater than or equal to 0.6H1. H3 can be greater than or equal to 0.7H1. H3 can be greater than or equal to 0.8H1.

[0157] When the third distance H3 is too large, the second fan 42 cannot effectively drive the air flow in the second chamber 413, thereby increasing the rotation resistance of the second fan 42. In order to increase the air flow driven by the second fan 42, H3 can be less than or equal to 0.7H1. H3 can be less than or equal to 0.8H1. H3 can be less than or equal to 0.9H1.

[0158] In some embodiments, the first fan 3 may include a first motor, which is disposed in the casing 1 . The first motor is connected to the casing 1 via a first sheet metal component, and an output shaft of the first motor extends toward the housing 41 .

[0159] The first blower 3 may include a first fan, which is located at a side of the first motor close to the housing 41 , and is connected to a motor output shaft of the first motor, and the first motor drives the first fan to rotate.

[0160] In some embodiments, the second fan 42 may include a second motor disposed in the housing 41 . The second motor is connected to the housing 41 via a second sheet metal component, and the output shaft of the second motor extends toward the top of the housing 41 .

[0161] The second blower 42 may include a second fan, which is located at a side of the second motor away from the housing 1 , and is connected to a motor output shaft of the second motor, and the second motor drives the second fan to rotate.

[0162] The rotation axis of the first fan 3 is arranged along the height direction of the casing 1, and the rotation axis of the second fan 42 is arranged along the height direction of the casing 41. The rotation axis of the first fan 3 and the rotation axis of the second fan 42 are arranged in parallel to reduce the mutual interference of the wind fields between the first fan 3 and the second fan 42, so that the air outlet direction of the first fan 3 and the air outlet direction of the second fan 42 are the same.

[0163] In some embodiments, the housing 41 may include an air duct plate 7 , which is disposed around the second fan 42 , with the top of the air duct plate 7 connected to the fan air outlet 412 , and the bottom of the air duct plate 7 connected to the fan air inlet 411 .

[0164] The number of air duct plates 7 corresponds to the number of second fans 42 , and adjacent second fans 42 are separated by air duct plates 7 , so that the second fans 42 have separate air ducts, thereby avoiding mutual interference between wind fields of adjacent second fans 42 .

[0165] In some embodiments, the air duct plate 7 separates the second cavity 413 to form an air outlet cavity 92 , and the second fan 42 is disposed in the air outlet cavity 92 . The bottom of the air outlet cavity 92 is connected to the fan air inlet 411 , and the top of the air outlet cavity 92 is connected to the fan air outlet 412 .

[0166] In some embodiments, the air duct plate 7 can separate the second cavity 413 to form a heat dissipation cavity 91 , and the heat dissipation cavity 91 is located at the periphery of the air outlet cavity 92 .

[0167] In some embodiments, an electrical box 6 is provided in the air conditioner outdoor unit, the electrical box 6 is connected to the housing 41, and the electrical box 6 is arranged in the heat dissipation air cavity 91 to save space and avoid interference with the air outlet of the air conditioner outdoor unit.

[0168] In some embodiments, the first motor includes a first motor housing, and a fixed end is provided on the periphery of the first motor housing, and the fixed end is connected to the first sheet metal component.

[0169] The opposite ends of the first sheet metal part are respectively connected to the inner walls of the housing 41 on opposite sides. The first motor is fixed to the two first sheet metal parts accordingly. It can be arranged that four fixed ends are arranged on the first motor housing, and two fixed ends are fixed to one first sheet metal part. The first motor is fixed to the two first sheet metal parts through the fixed ends, thereby improving the connection stability of the first motor.

[0170] See also Figure 13-Figure 19 In some embodiments, the electrical box 6 may be electrically connected to the first fan 3 and / or the second fan 42 to control the rotation of the first fan 3 and / or the second fan 42 .

[0171] In some embodiments, the air outlet cavity 92 and the heat dissipation air cavity 91 may be arranged in communication so that the air in the air outlet cavity 92 flows into the heat dissipation air cavity 91 driven by the first fan 3 and / or the second fan 42. When the air flowing into the heat dissipation air cavity 91 passes through the electrical box 6, it exchanges heat with the electrical box 6 to take away the heat of the electrical box 6, thereby preventing the electrical box 6 from being damaged due to excessive heat.

[0172] In some embodiments, the air outlet cavity 92 and the heat dissipation air cavity 91 may be arranged in communication, so that the air in the heat dissipation air cavity 91 can flow into the air outlet cavity 92 driven by the first fan 3 and / or the second fan 42. The first fan 3 and / or the second fan 42 rotate to drive the air in the heat dissipation air cavity 91 to flow into the air outlet cavity 92. When the air in the heat dissipation air cavity 91 flows through the electrical box 6, it exchanges heat with the electrical box 6 to take away the heat of the electrical box 6, thereby preventing the electrical box 6 from being damaged due to excessive heat.

[0173] In some embodiments, the air duct plates 7 are enclosed in a cylindrical shape, the air outlet cavity 92 is located on the inner side of the air duct plates 7, and the heat dissipation cavity 91 is located on the outer side of the air duct plates 7. The number of air duct plates 7 corresponds to the number of second fans 42. Adjacent second fans 42 are separated by the air duct plates 7, so that the second fans 42 have separate air ducts, thereby avoiding mutual interference between the wind fields of adjacent second fans 42.

[0174] In some embodiments, the electrical box 6 includes a box bottom plate 61, which is located at the bottom of the electrical box 6. A first ventilation hole 611 is provided on the box bottom plate 61. The first ventilation hole 611 is connected to the heat dissipation air cavity 91, so that the air in the heat dissipation air cavity 91 enters the electrical box 6 through the first ventilation hole 611, and the heat in the electrical box 6 is taken away by air flow.

[0175] In some embodiments, the electrical box 6 includes a box top plate 62, which is located at the top of the electrical box 6. A second ventilation hole 621 is provided on the box top plate 62. The second ventilation hole 621 is connected to the first ventilation hole 611 inside the electrical box 6, and the second ventilation hole 621 is connected to the fan outlet 412. The air in the heat dissipation air cavity 91 can enter the electrical box 6 through the first ventilation hole. Under the driving action of the first fan 3 and / or the second fan 42, the fan outlet 412 is at negative pressure. The air in the electrical box 6 flows out of the electrical box 6 through the second ventilation hole 621. The air flowing out of the electrical box 6 flows to the fan outlet 412 at the negative pressure. When the air flows through the electrical box 6, it can take away the heat in the electrical box 6 and reduce the temperature of the electrical box 6.

[0176] In some embodiments, the electrical box 6 includes a baffle plate 63, which is located between the box top plate 62 and the fan air inlet 411. The baffle plate 63 is used to block the second ventilation hole 621 to prevent rainwater, dust, etc. from falling into the electrical box 6 through the fan air inlet 411 and the second ventilation hole 621, thereby avoiding short circuits and open circuits of electrical components in the electrical box 6, thereby improving the safety and service life of the electrical box 6.

[0177] A heat dissipation duct 631 is provided between the baffle plate 63 and the box top plate 62 , and the second ventilation hole 621 is connected to the fan outlet 412 through the heat dissipation duct 631 . The air in the electrical box 6 can flow out of the electrical box 6 through the second ventilation hole 621 and then flow out of the fan outlet 412 through the heat dissipation duct 631 .

[0178] In some embodiments, the shielding plate 63 includes a shielding main board 632, and the shielding main board 632 is located between the box top plate 62 and the fan air inlet 411. The heat dissipation duct 631 is located below the shielding main board 632.

[0179] In some embodiments, the shielding main board 632 is a flat plate that is tilted relative to a horizontal plane, so that rainwater falling on the shielding main board 632 can flow away along the tilted shielding main board 632 .

[0180] In some embodiments, the shielding plate 63 includes a baffle plate 633, which is connected to the shielding main board 632. The baffle plate 633 is bent and extended to one side close to the heat dissipation duct 631, so that rainwater falling on the shielding main board 632 flows along the shielding main board 632 to the baffle plate 633. The baffle plate 633 guides the rainwater to the outside of the electrical box 6 to prevent the rainwater from falling into the electrical box 6.

[0181] In some embodiments, the baffle plate 633 and the shielding main board 632 are integrally formed, and the baffle plate 633 is bent relative to the shielding main board 632 through a bending process.

[0182] In some embodiments, the baffle plate 633 and the shielding main board 632 are connected by welding, and the baffle plate 633 and the shielding main board 632 are connected as one body by welding process.

[0183] In some embodiments, a connecting base plate 81 is provided in the air conditioner outdoor unit, and the connecting base plate 81 is connected to the bottom of the electrical box 6. One end of the connecting base plate 81 is connected to the box bottom plate 61, and the other end of the connecting base plate 81 is connected to the housing 41, so as to fix the electrical box 6 to the housing 41.

[0184] In some embodiments, one end of the connecting bottom plate 81 connected to the box bottom plate 61 is connected to the box bottom plate 61 by screw connection.

[0185] In some embodiments, one end of the connecting base plate 81 connected to the housing 41 is connected to the housing 41 by means of screws.

[0186] In some embodiments, one end of the connecting bottom plate 81 connected to the box bottom plate 61 is connected to the box bottom plate 61 by means of rivets.

[0187] In some embodiments, one end of the connecting base plate 81 connected to the shell 41 is connected to the shell 41 by means of rivets.

[0188] In some embodiments, the connecting base plate 81 is configured as a sheet metal part, and the connecting base plate 81 can be formed by a bending process.

[0189] In some embodiments, a connecting top plate 82 is provided in the air conditioner outdoor unit, and the connecting top plate 82 is located above the baffle plate 63. One end of the connecting top plate 82 is connected to the baffle plate 63, and the other end of the connecting top plate 82 is connected to the shell 41, so as to fix the electrical box 6 to the shell 41.

[0190] By connecting the top plate 82 and the bottom plate 81, the electrical box 6 is fixedly connected to the housing 41. The top and bottom of the electrical box 6 are fixedly connected to make the electrical box 6 more stable after being connected to the housing 41. The bottom plate 81 and the top plate 82 are connected to the electrical box 6 and the housing 41 to support the fan assembly 4.

[0191] In some embodiments, a third ventilation hole 71 is provided on the air duct plate 7 , and the third ventilation hole 71 is provided corresponding to the first ventilation hole 611 . The third ventilation hole 71 is connected to the heat exchange air outlet 13 and the heat dissipation air cavity 91 .

[0192] Driven by the first fan 3 and / or the second fan 42, the air in the first cavity 11 can flow into the heat dissipation cavity 91 through the heat exchange outlet 13 and the third ventilation port. The air flowing into the heat dissipation cavity 91 flows into the electrical box 6 through the first ventilation hole 611, and flows to the fan outlet 412 through the second ventilation hole 621. When the air flows through the electrical box 6, it can take away the heat in the electrical box 6 and reduce the temperature of the electrical box 6.

[0193] The third ventilation hole 71 can bring the air of the first cavity 11 into the heat dissipation cavity 91 , thereby increasing the air volume in the heat dissipation cavity 91 , so that more air will be brought into the interior of the electrical box 6 , thereby increasing the heat dissipation effect of the electrical box 6 .

[0194] In some embodiments, the air duct plate 7 is provided with a fourth ventilation hole 72, which is connected to the second ventilation hole 621, and the fourth ventilation hole 72 is connected to the heat dissipation air cavity 91 and the air outlet cavity 92. The air flows into the electrical box 6 through the heat exchange air outlet 13, the third ventilation hole 71 and the first ventilation hole 611, flows out of the electrical box 6 through the second ventilation hole 621, flows into the air outlet cavity 92 through the fourth ventilation hole 72, and then flows to the fan air outlet 412. When the air flows through the electrical box 6, it can take away the heat in the electrical box 6, reduce the temperature of the electrical box 6, and thus avoid the electrical box 6 from being overheated.

[0195] By setting the fourth ventilation hole 72, the wind coming out of the interior of the electrical box 6 will be sucked into the air outlet cavity 92 through the fourth ventilation hole 72, and blown out from the fan outlet 412 through the second fan 42, thereby increasing the air volume and flow speed in the heat dissipation air cavity 91. At this time, the heat dissipation effect of the electrical box 6 is increased in terms of both air volume and wind speed.

[0196] In some embodiments, in the height direction of the housing 41 , the fourth ventilation hole 72 is arranged higher than the electrical box 6 , so that the air flowing out of the electrical box 6 can flow to the fourth ventilation hole 72 .

[0197] In some embodiments, two electrical boxes 6 are provided, and the two electrical boxes 6 are symmetrically arranged in the housing 41, and the two electrical boxes 6 are both arranged in the heat dissipation air cavity 91. The electrical box 6 is arranged in the heat dissipation air cavity 91, which can make full use of the space in the fan assembly 4, effectively control the overall volume space size of the fan assembly 4, and effectively reduce the product cost.

[0198] See also Figure 10-12 ,as well as Figure 20-21 In some embodiments, the number of the first fans 3 and the second fans 42 is the same. When one first fan 3 is provided in the air conditioner outdoor unit, one second fan 42 is also provided. When two first fans 3 are provided in the air conditioner outdoor unit, two second fans 42 are also provided.

[0199] In some embodiments, when it is detected that the external static pressure in the unit installation scenario of the air-conditioning outdoor unit is less than the lower limit of the first external static pressure interval, the fan assembly 4 may not be installed, that is, the second fan 42 may not be set. Because the external static pressure is relatively small at this time, only the first fan 3 is set to meet the external static pressure resistance of the air-conditioning outdoor unit. It can be set that the value in the first external static pressure interval is greater than or equal to 50Pa, and the value in the first external static pressure interval is less than 100Pa.

[0200] In some embodiments, when the first fan 3 and the second fan 42 are provided in the unit, when it is detected that the static pressure outside the air conditioner outdoor unit in the unit installation scenario is less than the lower limit of the first static pressure interval outside the air conditioner outdoor unit, the air conditioner outdoor unit only controls the first fan 3 to start and run, and controls the second fan 42 not to run. Because the static pressure outside the machine is small at this time, only starting and running the first fan 3 can meet the ability of the air conditioner outdoor unit to resist the static pressure outside the machine, which can save power consumption. It can be set that the value in the first static pressure interval outside the machine is greater than or equal to 50Pa, and the value in the first static pressure interval outside the machine is less than 100Pa.

[0201] In some embodiments, at least one rated air volume interval is provided in the controller to control the start-up of the first fan 3 and the second fan 42, and the first fan 3 and the second fan 42 have the same rotation direction.

[0202] Detect the actual air volume of the air conditioner outdoor unit and select the corresponding rated air volume range according to the static pressure outside the unit.

[0203] When the actual air volume is higher than the upper limit of the selected rated air volume range, the rotation speeds of the first fan 3 and the second fan 42 are controlled to decrease by the same number of revolutions. When the actual air volume is lower than the lower limit of the selected rated air volume range, the rotation speeds of the first fan 3 and the second fan 42 are controlled to increase by the same number of revolutions.

[0204] The actual air volume is the actual air volume flowing through the fan outlet 412 , and the rated air volume range is the range of the rated air volume flowing through the fan outlet 412 .

[0205] When the actual air volume is too high, that is, the actual air volume is higher than the upper limit of the selected rated air volume range, the rotation speeds of the first fan 3 and the second fan 42 are controlled to decrease by the same number of revolutions, thereby reducing the air volume. When the actual air volume is too low, that is, the actual air volume is lower than the lower limit of the selected rated air volume range, the rotation speeds of the first fan 3 and the second fan 42 are controlled to increase by the same number of revolutions, thereby increasing the air volume.

[0206] The first fan 3 and the second fan 42 run at the same speed, and the control logic is simple and easy to implement. It can quickly respond to the high static pressure situation outside the machine, improve the air volume capacity of the unit, and the control system has high stability.

[0207] Because the first fan 3 and the second fan 42 are running at the same speed, there is little mutual interference between the first fan 3 and the second fan 42, and the system operation stability is high. The noise is low, and the ability of the air conditioner outdoor unit to resist the static pressure outside the machine can be stably improved, and the air volume and capacity of the air conditioner outdoor unit under high static pressure outside the machine can be improved. When the static pressure outside the unit changes, the speed of the first fan 3 and the second fan 42 can be quickly adjusted to meet the use requirements of the air conditioner outdoor unit.

[0208] In some embodiments, the first fan 3 and the second fan 42 are set to open and close at the same speed at the same time. The control logic is simple and easy to implement. It can quickly respond to high external static pressure conditions, improve the air volume capacity of the unit, and the control system has high stability.

[0209] In some embodiments, the air conditioner outdoor unit needs to pre-set a preset speed, which is the initial maximum speed. When the first fan and the second fan are started synchronously and the first fan and the second fan reach the set preset speeds respectively, the first fan 3 and the second fan 42 maintain the preset speeds.

[0210] In some embodiments, the corresponding rated air volume range is selected according to the static pressure outside the machine. The actual air volume of the air conditioner outdoor unit is detected.

[0211] In some embodiments, a first rated air volume interval is set in the controller, and when the external static pressure is a value within the first external static pressure interval, the rated air volume interval is selected as the first rated air volume interval.

[0212] In some embodiments, the air conditioner outdoor unit is provided with a rated air volume value, which is the air volume value required to be achieved when the unit is operating.

[0213] In some embodiments, the first external static pressure interval ranges from 50 to 100 Pa, the upper limit of the first rated air volume interval is the rated air volume value, and the lower limit of the first rated air volume interval is 0.9 times the rated air volume value.

[0214] In some embodiments, a second rated air volume interval is set in the controller, and when the external static pressure is a value within the second external static pressure interval, the rated air volume interval is selected as the second rated air volume interval.

[0215] Among them, the lower limit value of the second external static pressure interval is higher than the upper limit value of the first external static pressure interval, and the lower limit value of the second rated air volume interval is lower than the lower limit value of the first rated air volume interval.

[0216] In some embodiments, the upper limit value of the second rated air volume interval is equal to the upper limit value of the first rated air volume interval.

[0217] In some embodiments, the range of the second external static pressure interval is 100-150 Pa, the upper limit value of the second rated air volume interval is the rated air volume value, and the lower limit value of the second rated air volume interval is 0.8 times the rated air volume value.

[0218] In some embodiments, a third rated air volume interval is provided in the controller, and when the external static pressure is a value within the third external static pressure interval, the rated air volume interval is selected as the third rated air volume interval.

[0219] The lower limit value of the third external static pressure interval is higher than the upper limit value of the second external static pressure interval, and the lower limit value of the third rated air volume interval is lower than the lower limit value of the second rated air volume interval.

[0220] In some embodiments, an upper limit value of the third rated air volume interval is equal to an upper limit value of the first rated air volume interval.

[0221] In some embodiments, the value within the range of the third external static pressure interval is greater than 150 Pa, the upper limit value of the third rated air volume interval is the rated air volume value, and the lower limit value of the second rated air volume interval is 0.7 times the rated air volume value.

[0222] As the static pressure outside the air conditioner outdoor unit increases, when the speeds of the first fan 3 and the second fan 42 remain unchanged, the actual air volume of the unit is reduced, and the speeds of the first fan 3 and the second fan 42 need to be increased to maintain the air volume, but the difficulty of maintaining it will become increasingly greater. Therefore, as the static pressure outside the unit increases, the air volume of the unit can be allowed to decrease to a certain extent, so as to more reasonably control the air volume of the unit.

[0223] In some embodiments, when the actual air volume is higher than the upper limit of the selected rated air volume range, and the actual air volume is lower than x times the upper limit of the selected rated air volume range, the rotation speeds of the first fan 3 and the second fan 42 are controlled to be reduced by a first preset number of revolutions.

[0224] Wherein, x is a constant, the value of x may be 1.1, and the first preset number of revolutions may be set to 20 revolutions.

[0225] That is, when the actual air volume is higher than the rated air volume, and the difference between the actual air volume and the rated air volume is within 10%, the speed of the upper and lower fans is simultaneously reduced by 20 revolutions.

[0226] The first fan 3 and the second fan 42 are controlled to reduce their rotation speeds by the same number of revolutions, thereby reducing the air volume. The first fan 3 and the second fan 42 run at the same speed, the control logic is simple and easy to implement, and the control system has high stability.

[0227] In some embodiments, when the actual air volume is not less than x times the upper limit of the selected rated air volume range, and the actual air volume is not higher than y times the upper limit of the selected rated air volume range, the speed of the first fan 3 and the second fan 42 are controlled to be reduced by a second preset number of revolutions.

[0228] Wherein x and y are constants, x<y, x can be 1.1, y can be 1.2. The first preset number of revolutions is less than the second preset number of revolutions, and the second preset number of revolutions can be set to 50 revolutions.

[0229] That is, when the actual air volume is higher than the rated air volume, and the difference between the actual air volume and the rated air volume is within 10%-20%, the speed of the upper and lower fans is simultaneously reduced by 50 revolutions.

[0230] When the actual air volume is higher than the upper limit of the selected rated air volume range, it is necessary to reduce the rotation speed of the first fan 3 and the second fan 42 synchronously, thereby reducing the air volume. The first fan 3 and the second fan 42 run at the same speed, the control logic is simple and easy to implement, and the control system has high stability.

[0231] In some embodiments, when the actual air volume is higher than y times the upper limit of the selected rated air volume range, the rotation speeds of the first fan 3 and the second fan 42 are controlled to decrease by a third preset number of revolutions. The second preset number of revolutions is less than the third preset number of revolutions.

[0232] Wherein y is a constant, and y can be set to 1.2. The third preset revolution can be set to 100 revolutions.

[0233] That is, when the actual air volume is higher than the rated air volume, and the difference between the actual air volume and the rated air volume is more than 20%, the speed of the upper and lower fans is simultaneously reduced by 100 revolutions.

[0234] When the actual air volume is much higher than the selected rated air volume range, the rotation speeds of the first fan 3 and the second fan 42 are simultaneously reduced according to the difference range between the actual air volume and the selected rated air volume range, thereby reducing the air volume. The first fan 3 and the second fan 42 run at the same speed, the control logic is simple and easy to implement, and the control system has high stability.

[0235] In some embodiments, when it is detected that the actual air volume is within the selected rated air volume range, the first fan 3 and the second fan 42 are controlled to run at the current rotation speed.

[0236] In some embodiments, when the actual air volume is lower than the lower limit of the selected rated air volume range, and the actual air volume is higher than z times the lower limit of the selected rated air volume range, the speeds of the first fan 3 and the second fan 42 are controlled to increase by a first preset number of revolutions.

[0237] Wherein, z is a constant, the value of z may be 0.9, and the first preset number of revolutions may be set to 20 revolutions.

[0238] The speeds of the first fan 3 and the second fan 42 are controlled to increase by the same number of revolutions, thereby increasing the air volume. The first fan 3 and the second fan 42 run at the same speed, and the control logic is simple and easy to implement, which can quickly respond to the high static pressure outside the machine, improve the air volume capacity of the unit, and the control system has high stability.

[0239] In some embodiments, when the actual air volume is not higher than z times the lower limit of the selected rated air volume range, and the actual air volume is not lower than w times the lower limit of the selected rated air volume range, the speed of the first fan 3 and the second fan 42 are controlled to increase by a second preset number of revolutions.

[0240] Wherein z and w are constants, w<z, z can be 0.9, and w can be 0.8. The first preset number of revolutions is less than the second preset number of revolutions, and the second preset number of revolutions can be set to 50 revolutions.

[0241] When the actual air volume is lower than the selected rated air volume range, it is necessary to increase the rotation speed of the first fan 3 and the second fan 42 simultaneously, so as to increase the air volume. The first fan 3 and the second fan 42 run at the same speed, and the control logic is simple and easy to implement, which can quickly respond to the high static pressure outside the machine, improve the air volume capacity of the unit, and the control system has high stability.

[0242] In some embodiments, when the actual air volume is lower than the lower limit of the selected rated air volume range of w times, the rotation speeds of the first fan 3 and the second fan 42 are controlled to increase by a third preset number of revolutions. The second preset number of revolutions is less than the third preset number of revolutions.

[0243] Wherein w is a constant, and the value of w can be 0.8. The third preset revolution can be set to 100 revolutions.

[0244] When the actual air volume is lower than the lower limit of the selected rated air volume interval of w times, that is, the actual air volume is much lower than the selected rated air volume interval, the rotation speeds of the first fan 3 and the second fan 42 are increased synchronously according to the difference range between the actual air volume and the selected rated air volume interval, thereby increasing the air volume. The first fan 3 and the second fan 42 run at the same speed, and the control logic is simple and easy to implement, which can quickly respond to the high static pressure outside the machine, improve the air volume capacity of the unit, and the control system has high stability.

[0245] In some embodiments, the controller is configured to: when controlling the speeds of the first fan 3 and the second fan 42 to increase synchronously, when the real-time current of the first fan 3 reaches the upper limit of the rated current of the first fan 3, control the speeds of the first fan 3 and the second fan 42 to run at the current speeds.

[0246] The rated current of the first fan 3 is determined according to the type of the first fan 3 .

[0247] When increasing the rotation speed of the first fan 3 and the second fan 42 to increase the overall air volume, it is necessary to monitor the current of the first fan 3 and the second fan 42. When the current of one of the first fan 3 or the second fan 42 reaches the rated current, the rotation speed of the first fan 3 and the second fan 42 cannot be increased again, and the overall air volume of the air conditioner outdoor unit reaches the upper limit.

[0248] In some embodiments, the controller is configured to: when controlling the speeds of the first fan 3 and the second fan 42 to increase synchronously, when the real-time power of the first fan 3 reaches the upper limit of the rated power of the first fan 3, control the speeds of the first fan 3 and the second fan 42 to run at the current speeds.

[0249] The rated power of the first fan 3 is determined according to the type of the first fan 3 .

[0250] When increasing the rotation speeds of the first fan 3 and the second fan 42 to increase the overall air volume, it is necessary to monitor the power of the first fan 3 and the second fan 42. When the power of one of the first fan 3 or the second fan 42 reaches the rated power, the rotation speeds of the first fan 3 and the second fan 42 cannot be increased again, and the overall air volume of the air conditioner outdoor unit reaches the upper limit.

[0251] In some embodiments, the controller is configured to: when controlling the speeds of the first fan 3 and the second fan 42 to increase synchronously, when the real-time current of the second fan 42 reaches the upper limit of the rated current of the second fan 42, control the speeds of the first fan 3 and the second fan 42 to run at the current speeds.

[0252] The rated current of the second fan 42 is determined according to the type of the second fan 42 .

[0253] When increasing the rotation speed of the first fan 3 and the second fan 42 to increase the overall air volume, it is necessary to monitor the current of the first fan 3 and the second fan 42. When the current of one of the first fan 3 or the second fan 42 reaches the rated current, the rotation speed of the first fan 3 and the second fan 42 cannot be increased again, and the overall air volume of the air conditioner outdoor unit reaches the upper limit.

[0254] In some embodiments, the controller is configured to: when controlling the speeds of the first fan 3 and the second fan 42 to increase synchronously, when the real-time power of the second fan 42 reaches the upper limit of the rated power of the second fan 42, control the speeds of the first fan 3 and the second fan 42 to run at the current speeds.

[0255] The rated power of the second fan 42 is determined according to the type of the second fan 42 .

[0256] When increasing the rotation speeds of the first fan 3 and the second fan 42 to increase the overall air volume, it is necessary to monitor the power of the first fan 3 and the second fan 42. When the power of one of the first fan 3 or the second fan 42 reaches the rated power, the rotation speeds of the first fan 3 and the second fan 42 cannot be increased again, and the overall air volume of the air conditioner outdoor unit reaches the upper limit.

[0257] In some embodiments, when the rotation speeds of the first fan 3 and the second fan 42 are reduced to reduce the air volume of the entire machine, it is not necessary to monitor the currents of the first fan 3 and the second fan 42 to simplify the operation logic.

[0258] See also Figure 1-Figure 22 In some embodiments, a first fan 3 and a second fan 42 are provided in the unit, and it is necessary to obtain the external static pressure of the unit installation scenario, the first rated current and the first rated power of the first fan, the second rated current and the second rated power of the second fan, and the rated air volume of the unit.

[0259] Before the air-conditioning outdoor unit is started, the initial rated speed difference between the first fan 3 and the second fan 42 is set, and the first fan 3 and the second fan 42 are started so that the first fan 3 reaches a first preset speed and the second fan 42 reaches a second preset speed. The second preset speed is greater than the first preset speed, and the difference between the second preset speed and the first preset speed is the initial rated speed difference.

[0260] When the first fan 3 and the second fan 42 are started, the difference between the rated rotation speeds of the first fan 3 and the second fan 42 is kept unchanged, and the first fan 3 reaches a first preset rotation speed, and the second fan 42 reaches a second preset rotation speed.

[0261] In some embodiments, when the first fan 3 reaches the first preset speed and the second fan 42 reaches the second preset speed, the actual air volume of the air-conditioning outdoor unit is determined to be greater than the rated air volume, and at the same time, it is determined whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0262] When it is detected that the current of the first fan does not exceed the rated current of the first fan and the current of the second fan does not exceed the rated current of the second fan, when the actual air volume is lower than the rated air volume, the rotation speeds of the first fan 3 and the second fan 42 are controlled to increase by the same number of revolutions, and then the actual air volume and the rated air volume of the air-conditioning outdoor unit are judged again, and at the same time, it is judged whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0263] At this time, the currents of the first fan and the second fan may be increased to increase the rotation speeds of the first fan and the second fan, thereby increasing the air output of the outdoor unit of the air conditioner.

[0264] The speed of the second fan 42 is higher than that of the first fan 3, which can increase the air volume while sharing the fan resistance of the first fan 3, thereby reducing the current of the first fan 3. This control scheme can give full play to the capabilities of the first fan and the second fan, and can enable the first fan to adopt a low-power and low-cost fan, so that the low-power and low-cost first fan can play a greater role, reduce the cost of the unit, and make the unit more resistant to external static pressure to cope with ultra-high external static pressure conditions.

[0265] The first fan 3 and the second fan 42 are controlled by differential rotation. After the first fan adopts a low-power and low-cost fan, it is convenient to adjust the current or power of the first fan and the second fan to be consistent, thereby improving the current stability of the unit and increasing the service life of the unit.

[0266] When it is detected that the current of the first fan does not exceed the rated current of the first fan and the current of the second fan does not exceed the rated current of the second fan, when the actual air volume is higher than the rated air volume, the rotation speeds of the first fan 3 and the second fan 42 are controlled to be reduced by the same number of revolutions, and then the actual air volume and the rated air volume of the air-conditioning outdoor unit are judged again, and at the same time, it is judged whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0267] At this time, the current of the first fan and the second fan can be reduced to reduce the rotation speed of the first fan and the second fan, thereby reducing the air output of the air conditioner outdoor unit.

[0268] In some embodiments, when the first fan 3 reaches the first preset speed and the second fan 42 reaches the second preset speed, the actual air volume of the air-conditioning outdoor unit is determined to be greater than the rated air volume, and at the same time, it is determined whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0269] When it is detected that the actual air volume reaches the rated air volume, when it is detected that the current of the first fan 3 exceeds the rated current of the first fan 3 and the current of the second fan 42 does not exceed the rated current of the second fan 42, the speed of the second fan 42 is controlled to be increased and the speed of the first fan 3 is controlled to be reduced. Then, the actual air volume of the air conditioner outdoor unit and the rated air volume are judged again, and at the same time, it is judged whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0270] At this time, the current of the first fan 3 exceeds the rated current of the first fan 3, and continued operation will damage the first fan 3. Controlling and increasing the speed of the second fan 42 can increase the air volume while sharing the fan resistance of the first fan 3, thereby reducing the current of the first fan 3. This control scheme can give full play to the capabilities of the first fan and the second fan.

[0271] When it is detected that the actual air volume reaches the rated air volume, when it is detected that the current of the second fan 42 exceeds the rated current of the second fan 42 and the current of the first fan 3 does not exceed the rated current of the first fan 3, the speed of the first fan 3 is controlled to be increased and the speed of the second fan 42 is controlled to be reduced. Then, the actual air volume of the air conditioner outdoor unit and the rated air volume are judged again, and at the same time, it is judged whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0272] At this time, the current of the second fan 42 exceeds the rated current of the second fan 42, and continuing to operate will damage the second fan 42. Controlling and increasing the speed of the first fan 3 can increase the air volume while sharing the fan resistance of the second fan 42, thereby reducing the current of the second fan 42. In the same scenario, when the current of the second fan 42 is reduced, the speed of the second fan 42 will also be reduced. This control scheme can give full play to the capabilities of the first fan and the second fan.

[0273] When it is detected that the actual air volume reaches the rated air volume, when it is detected that the current of the second fan 42 exceeds the rated current of the second fan 42 and the current of the first fan 3 exceeds the rated current of the first fan 3, the first fan 3 and the second fan 42 are controlled to reduce the same speed. Then, the actual air volume of the air conditioner outdoor unit and the rated air volume are judged again, and at the same time, it is judged whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0274] At this time, the currents of the first fan and the second fan may be reduced to reduce the rotation speeds of the first fan and the second fan, thereby avoiding damage to the first fan and the second fan.

[0275] In some embodiments, when the first fan 3 reaches the first preset speed and the second fan 42 reaches the second preset speed, the actual air volume of the air-conditioning outdoor unit is determined to be greater than the rated air volume, and at the same time, it is determined whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0276] In the case where it is detected that the actual air volume is greater than the rated air volume, when it is detected that the current of the first fan 3 does not exceed the rated current of the first fan 3 and the current of the second fan 42 exceeds the rated current of the second fan 42, the speed of the second fan 42 is controlled to be reduced. Then, the actual air volume of the air conditioner outdoor unit and the rated air volume are judged again, and at the same time, it is judged whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0277] At this time, the actual air volume is greater than the rated air volume, and by reducing the rotation speed of the second fan 42, damage to the second fan can be avoided while reducing the air volume.

[0278] When it is detected that the actual air volume is less than the rated air volume, when it is detected that the current of the first fan 3 does not exceed the rated current of the first fan 3 and the current of the second fan 42 exceeds the rated current of the second fan 42, the speed of the first fan 3 is controlled to be increased. Then, the actual air volume of the air conditioner outdoor unit and the rated air volume are judged again, and at the same time, it is judged whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0279] At this time, the current of the second fan 42 exceeds the rated current of the second fan 42, and continuing to operate will damage the second fan 42. Controlling and increasing the speed of the first fan 3 can increase the air volume while sharing the fan resistance of the second fan 42, thereby reducing the current of the second fan 42. In the same scenario, when the current of the second fan 42 is reduced, the speed of the second fan 42 will also be reduced. This control scheme can give full play to the capabilities of the first fan and the second fan.

[0280] When it is detected that the actual air volume is greater than the rated air volume, when it is detected that the current of the first fan 3 exceeds the rated current of the first fan 3 and the current of the second fan 42 does not exceed the rated current of the second fan 42, the speed of the first fan 3 is controlled to be reduced. Then, the actual air volume of the air conditioner outdoor unit and the rated air volume are judged again, and at the same time, it is judged whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0281] At this time, the actual air volume is greater than the rated air volume, and by reducing the rotation speed of the first fan 3, damage to the first fan can be avoided while reducing the air volume.

[0282] When it is detected that the actual air volume is less than the rated air volume, when it is detected that the current of the first fan 3 exceeds the rated current of the first fan 3 and the current of the second fan 42 does not exceed the rated current of the second fan 42, the speed of the second fan 42 is controlled to be increased. Then, the actual air volume of the air conditioner outdoor unit and the rated air volume are judged again, and at the same time, it is judged whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0283] At this time, the actual air output is less than the rated air output, and the speed of the second fan 42 is controlled to be increased. The fan resistance of the first fan 3 can be shared while the air output is increased, thereby reducing the current of the first fan 3. This control scheme can give full play to the capabilities of the first fan and the second fan, and can enable the first fan to adopt a low-power and low-cost fan, so that the low-power and low-cost first fan can play a greater role, reduce the cost of the unit, and make the unit more resistant to external static pressure to cope with ultra-high external static pressure conditions.

[0284] In the case where it is detected that the actual air volume is greater than the rated air volume, when it is detected that the current of the first fan 3 exceeds the rated current of the first fan 3 and the current of the second fan 42 exceeds the rated current of the second fan 42, the rotation speeds of the first fan 3 and the second fan 42 are controlled to be reduced. Then, the actual air volume of the air conditioner outdoor unit and the rated air volume are judged again, and at the same time, it is judged whether the current of the first fan exceeds the rated current of the first fan and whether the current of the second fan exceeds the rated current of the second fan.

[0285] At this time, the actual air volume is greater than the rated air volume. By reducing the rotation speeds of the first fan 3 and the second fan 42, damage to the first fan and the second fan can be avoided while reducing the air volume.

[0286] In some embodiments, when the first fan 3 reaches the first preset speed and the second fan 42 reaches the second preset speed, the actual air output of the air-conditioning outdoor unit is determined to be greater than the rated air output, and at the same time, it is determined whether the power of the first fan exceeds the rated power of the first fan and whether the power of the second fan exceeds the rated power of the second fan.

[0287] When it is detected that the power of the first fan does not exceed the rated power of the first fan and the power of the second fan does not exceed the rated power of the second fan, when the actual air volume is lower than the rated air volume, the rotation speeds of the first fan 3 and the second fan 42 are controlled to increase by the same number of revolutions, and then the actual air volume and the rated air volume of the air-conditioning outdoor unit are judged again, and at the same time, it is judged whether the power of the first fan exceeds the rated power of the first fan and whether the power of the second fan exceeds the rated power of the second fan.

[0288] At this time, the power of the first fan and the second fan can be increased to increase the rotation speed of the first fan and the second fan, thereby increasing the air output of the air conditioner outdoor unit.

[0289] The speed of the second fan 42 is higher than that of the first fan 3, which can increase the air volume while sharing the fan resistance of the first fan 3, thereby reducing the power of the first fan 3. This control scheme can give full play to the capabilities of the first fan and the second fan, and can enable the first fan to adopt a low-power and low-cost fan, so that the low-power and low-cost first fan can play a greater role, reduce the cost of the unit, and make the unit more resistant to external static pressure to cope with ultra-high external static pressure conditions.

[0290] The first fan 3 and the second fan 42 are controlled by differential rotation. After the first fan adopts a low-power and low-cost fan, it is easy to adjust the power of the first fan and the second fan to keep the power consistent, thereby improving the power stability of the unit and increasing the service life of the unit.

[0291] When it is detected that the power of the first fan does not exceed the rated power of the first fan and the power of the second fan does not exceed the rated power of the second fan, when the actual air volume is higher than the rated air volume, the rotation speeds of the first fan 3 and the second fan 42 are controlled to be reduced by the same number of revolutions, and then the actual air volume and the rated air volume of the air-conditioning outdoor unit are judged again, and at the same time, it is judged whether the power of the first fan exceeds the rated power of the first fan and whether the power of the second fan exceeds the rated power of the second fan.

[0292] At this time, the power of the first fan and the second fan can be reduced to reduce the rotation speed of the first fan and the second fan, thereby reducing the air output of the air conditioner outdoor unit.

[0293] In some embodiments, the initial speed difference is an empirical value, and the speed of the second fan 42 can be set to be 100 revolutions greater than the speed of the first fan 3, which can effectively improve the unit's ability to resist external static pressure. When the initial speed difference is too small, the speed difference between the first fan 3 and the second fan 42 is too small, and the second fan 42 has an insignificant suction effect on the first fan 3, and the performance improvement of the unit is not obvious. Therefore, the initial speed difference can be greater than 50 revolutions, the initial speed difference can be greater than 100 revolutions, and the initial speed difference can be greater than 150 revolutions.

[0294] If the initial speed difference is too large, the current of the second fan 42 will be too large, so the initial speed should not be too large. The initial speed difference can be set to less than 150 rpm, less than 100 rpm, and less than 50 rpm.

[0295] The initial speed difference is set in this embodiment to maximize the ability of the unit to resist external static pressure, so that the current or power of the first fan 3 and the second fan 42 reaches a balanced state, reasonably optimize the operating conditions of the unit, and extend the service life of the unit. The fan capacity can be fully utilized, and low-power and low-cost fans can be used to achieve greater effects, reduce costs and improve the market competitiveness of air conditioners.

[0296] See also Figure 1-Figure 27 In some embodiments, in an air-conditioning outdoor unit provided with at least two second fans, the second fans include: a first upper fan 101 , and a first position point 1011 and a third position point 1012 are provided on the first upper fan 101 .

[0297] The second fan includes: a second upper fan 102 , on which a second position point 1021 is disposed. The first position point 1011 and the second position point 1021 are arranged along the width direction of the housing 1 .

[0298] In some embodiments, the first location point 1011 and the second location point 1021 are located on the same horizontal plane.

[0299] In some embodiments, the first upper fan 101 and the second upper fan 102 are symmetrically arranged in the width direction of the housing 41 .

[0300] In some embodiments, in an air conditioning outdoor unit provided with at least two first fans, the first fan includes: a first lower fan 103 , the rotation center of the first lower fan 103 corresponds to the rotation center of the first upper fan 101 , and a fourth position point 1031 is provided on the first lower fan 103 .

[0301] The first fan includes: a second lower fan 104 , and a rotation center of the second lower fan 104 corresponds to a rotation center of the second upper fan 102 .

[0302] If an air-conditioning outdoor unit is provided with at least two first fans and at least two second fans, an unreasonable layout of the first fans and the second fans may lead to poor air volume and noise performance of the unit under high external static pressure conditions.

[0303] Since the unit is provided with four fans in a structure combining parallel and series connection, the air volume and noise under high external static pressure conditions are affected by many factors, such as the layout position of the fans, the overall size of the unit, the layout of internal components, the direction of airflow in the internal space of the unit, etc., and different units perform differently. Therefore, it is necessary to confirm the up, down, left, and right layout positions of the four fans according to the actual situation of the unit so that the air volume and noise performance of the unit can reach the optimal state. Based on the above reasons, the following embodiments are proposed.

[0304] In some embodiments, first confirm the overall size of the air conditioner outdoor unit, the internal layout of the components, the size of the first fan and the second fan, the position of the first fan and the second fan in the unit, the speed of the first fan and the second fan and other information.

[0305] In some embodiments, the first fan is arranged below the second fan, and the position of the second fan is easy to adjust. Therefore, first determining the installation position of the first fan in the height direction of the housing 1 can make it easier to determine the position of the second fan according to the position of the first fan.

[0306] In some embodiments, in the housing 41 , the distance between the first position point 1011 and the second position point 1021 is defined as distance a, and the maximum value of distance a can be set to distance A.

[0307] That is, in the width direction of the shell 41, the maximum distance between the first position point 1011 and the second position point 1021 can be set to the distance A. The first upper fan 101 and the second upper fan 102 are moved away from each other in the width direction of the shell 41. When the first upper fan 101 and the second upper fan 102 move to abut the shell 41, it can be considered that the distance between the first position point 1011 and the second position point 1021 is the distance A.

[0308] In some embodiments, the distance between the third position point 1012 and the fourth position point 1031 in the height direction of the housing 1 is defined as distance b, and the maximum value of distance b can be set to distance B.

[0309] In some embodiments, the installation position of the first lower fan 103 in the height direction of the casing 1 is determined, and the first upper fan 101 is moved away from the first lower fan 103 in the height direction of the shell 41. When the first upper fan 101 moves to abut the shell 41, the distance between the third position point 1012 and the fourth position point 1031 in the height direction of the casing 1 can be considered to be defined as distance A.

[0310] In some embodiments, a value in distance B is defined as the initial distance, and distance A is divided into n segments, and a point is taken from each segment of distance A. It can be set that the midpoint value of distance B can be taken as the initial distance. Fig.25 As shown, n can be set to 5 segments.

[0311] Under the preset external static pressure, the distance a is taken as the distance between a point on each of the n segments and the first position point 1011, the first fan and the second fan are turned on to run at the set speed, the air volume of the fan outlet 412 is detected in turn, and the distance a corresponding to the maximum air volume is obtained.

[0312] Divide the distance B into q segments, and select a point in each segment of the distance B. The point can be the midpoint of each segment or a point at another position.

[0313] Under the preset external static pressure, the distance b is taken as the distance between a point on each segment in the q segment and the fourth position point 1031. The first fan and the second fan are turned on to run at the set speed, and the air volume of the fan outlet 412 is detected in turn to obtain the distance b corresponding to the maximum air volume.

[0314] The distances between the first upper fan 101, the first lower fan 103, the second upper fan 102 and the second lower fan 104 are set according to the distance a corresponding to the maximum air volume and the distance b corresponding to the maximum air volume, thereby determining the positions of the first upper fan 101, the first lower fan 103, the second upper fan 102 and the second lower fan 104 in the height direction of the casing 1 and the positions in the width direction of the casing 1.

[0315] This embodiment determines the positions of the first upper fan 101, the first lower fan 103, the second upper fan 102, and the second lower fan 104 in the height direction and the width direction of the casing 1 under different preset external static pressures, so that the layout is more reasonable, and the problem of airflow turbulence between the fans caused by the upper and lower spacing of the first fan and the second fan being arranged too close, causing mutual interference, thereby avoiding the problem of reduced air volume and increased noise, affecting the comfort and reliability of the unit. When the left and right upper and lower spacing of the first fan and the second fan is arranged too far, the fans lose their mutual beneficial role, and the problem of reduced air volume and affecting the performance of the unit is avoided.

[0316] In some embodiments, a value in distance B is defined as the initial distance, and distance A is divided into n segments, and a point is taken from each segment of distance A. It can be set that the midpoint value of distance B can be taken as the initial distance. n can be set to 5 segments.

[0317] Under the preset static pressure outside the machine, the distance b is defined as the initial distance unchanged, the distance a takes n values ​​of A·(m / n) in sequence, the first fan and the second fan are turned on to run at the set speed, and the air volume of the fan outlet 412 is detected in sequence. The value of the distance a corresponding to the maximum value of the air volume is defined as the distance A1, m and n are constants, and n>m.

[0318] Divide the distance B into q segments and select a point in each segment of distance B. The point can be the midpoint of each segment or a point at other positions.

[0319] Under the preset static pressure outside the machine, the distance a is defined as the distance A1 and remains unchanged, the distance b takes q values ​​in turn as B·(v / q), the first fan and the second fan are turned on to run at the set speed, the air volume of the fan outlet 412 is detected in turn, and the value of the distance b corresponding to the maximum air volume is defined as the distance B1, v and q are constants, and q>v.

[0320] The distances between the first upper fan 101, the first lower fan 103, the second upper fan 102 and the second lower fan 104 are set according to the distance a corresponding to the maximum air volume and the distance b corresponding to the maximum air volume.

[0321] This embodiment determines the positions of the first upper fan 101, the first lower fan 103, the second upper fan 102, and the second lower fan 104 in the height direction and the width direction of the casing 1 under different preset external static pressures, so that the layout is more reasonable, and the problem of airflow turbulence between the fans caused by the upper and lower spacing of the first fan and the second fan being arranged too close, causing mutual interference, thereby avoiding the problem of reduced air volume and increased noise, affecting the comfort and reliability of the unit. When the left and right upper and lower spacing of the first fan and the second fan is arranged too far, the fans lose their mutual beneficial role, and the problem of reduced air volume and affecting the performance of the unit is avoided.

[0322] In some embodiments, after the step of obtaining the distance A1 and the distance B1, step S10 is performed.

[0323] S10: Under a preset external static pressure, define distance b as the distance b corresponding to the maximum air volume, and distance b remains unchanged. Set the upper and lower spacings between the first upper fan 101 and the first lower fan 103 according to the distance b corresponding to the maximum air volume.

[0324] S11: Divide one of the sections corresponding to the distance a when the air volume is maximum into p sections, take a point on each of the p sections, and p is a positive integer; under the preset static pressure outside the machine, the distance a is taken as the distance between a point taken on each of the p sections and the first position point 1011, turn on the first fan and the second fan to run at the set speed, detect the air volume of the fan outlet 412 in turn, and obtain the distance a corresponding to the maximum air volume.

[0325] The location of the point on each segment in the p segments can be the midpoint of each segment to facilitate calculation.

[0326] The length of each segment in the p segment can be set to be equal to facilitate calculation

[0327] In this embodiment, the distance a corresponding to the maximum air volume is calculated again, so that the calculation result of the distance a corresponding to the maximum air volume is more accurate, thereby improving the performance of the unit.

[0328] In some embodiments, S12: under a preset external static pressure, define the distance a as the distance a corresponding to the maximum air volume, and set the left and right spacing between the first upper fan 101 and the second upper fan 102 according to the distance a corresponding to the maximum air volume.

[0329] S13: Divide one of the sections corresponding to the distance b at the maximum air volume into w sections, select a point on each section in the w sections, w is a positive integer; under the preset external static pressure, the distance b is sequentially taken as the distance between a point taken on each section in the w sections and the fourth position point 1031, the first fan and the second fan are turned on to run at the set speed, the air volume of the fan outlet 412 is sequentially detected, and the distance b corresponding to the maximum air volume is obtained. The position of the point taken on each section in the w sections can be the midpoint of each section to facilitate calculation.

[0330] The length of each segment in the w segment can be set to be equal to facilitate calculation.

[0331] This embodiment recalculates the distance b corresponding to the maximum air volume, and through multiple calculations, makes the calculation result of the distance a corresponding to the maximum air volume more accurate, which can improve the performance of the unit after the fan is installed.

[0332] In some embodiments, after executing S10, S11, S12, and S13 for a preset number of times in a loop, the distance a corresponding to the maximum air volume and the distance b corresponding to the maximum air volume are obtained. It can be set that the preset number of times is greater than or equal to two times, which can improve the accuracy of the calculation result.

[0333] In some embodiments, after executing S10 and S11 for a preset number of times in a loop, the distance a corresponding to the maximum air volume is obtained. The calculation accuracy of the distance a corresponding to the maximum air volume is improved by multiple calculations.

[0334] In some embodiments, after executing S12 and S13 a preset number of times in a loop, the distance b corresponding to the maximum air volume is obtained, and the calculation accuracy of the distance b corresponding to the maximum air volume is improved through multiple calculations.

[0335] In some embodiments, after obtaining the distance a corresponding to the maximum air volume and the distance b corresponding to the maximum air volume, the first fan and the second fan are started and operated. When the first fan and the second fan reach the set speed, the noise value is detected. When the noise value meets the set requirements, the distance a and the distance b at this time are obtained.

[0336] At this time, the noise value meets the set requirements, and the positions of the first upper fan 101, the first lower fan 103, the second upper fan 102 and the second lower fan 104 in the height direction of the casing 1 and in the width direction of the casing 1 are set according to the obtained distance a and distance b, which can meet the demand for large air output.

[0337] In some embodiments, S20: detect the noise value. When the noise value does not meet the set requirements, under the preset static pressure outside the machine, define the distance a as the distance a corresponding to the maximum air volume. The distance a remains unchanged. Set the left and right spacing between the first upper fan 101 and the second upper fan 102 according to the distance a corresponding to the maximum air volume.

[0338] S21: Divide a section corresponding to the distance b when the air volume is maximum into f sections, take a point on each section of the f sections, and f is a positive integer; under the preset external static pressure, the distance b is taken as the distance between a point taken on each section of the f sections and the fourth position point 1031, turn on the first fan and the second fan to run at the set speed, detect the noise value in turn, and when the noise value meets the set requirements, obtain the corresponding distance b.

[0339] The distance b at this time is the distance b when the noise value is optimal and also the distance b when the air volume is maximum. The positions of the first upper fan 101, the first lower fan 103, the second upper fan 102 and the second lower fan 104 in the height direction of the housing 1 are set according to the obtained distance b, which can meet the requirements of large air volume and optimal noise.

[0340] In some embodiments, in step S21, when it is detected that the noise value does not meet the set requirements, the distance b corresponding to the noise that meets the first selection condition in a section corresponding to the distance b at the maximum air volume is obtained, and under the preset external static pressure, the distance b is set to the distance b corresponding to the noise that meets the first selection condition, and the upper and lower spacing between the first upper fan 101 and the first lower fan 103 is set according to the distance b corresponding to the noise that meets the first selection condition.

[0341] S22: Divide one of the sections corresponding to the distance a at the maximum air volume into e sections, take a point on each section in the e section, and e is a positive integer; under the preset external static pressure, the distance a is taken as the distance between a point taken on each section in the e section and the first position point 1011, turn on the first fan and the second fan to run at the set speed, detect the noise value in turn, and when the noise value meets the set requirements, obtain the corresponding distance a.

[0342] The distance a at this time is the distance a when the noise value is optimal and also the distance a when the air volume is maximum. The positions of the first upper fan 101, the first lower fan 103, the second upper fan 102 and the second lower fan 104 in the width direction of the housing 1 are set according to the obtained distance a, which can meet the requirements of large air volume and optimal noise.

[0343] In some embodiments, in step S22, when it is detected that the noise value does not meet the set requirements, the distance range of a section corresponding to the distance b at the maximum air volume is increased, and then step S21 is executed.

[0344] In some embodiments, in step S22, when it is detected that the noise value does not meet the set requirements, the distance range of a section corresponding to the distance a at the maximum air volume is increased, and step S22 is executed again.

[0345] When the noise judgment criteria cannot be met within the interval segment where the optimal air volume distance a and distance b are located, the interval range of the optimal air volume distance a and distance b is expanded, and the above process is repeated until the optimal a and b values ​​that meet the noise conditions and have the maximum air volume are selected, and the process ends.

[0346] In some embodiments, the setting requirements of the noise value can be set as follows: 1. The average noise value of the first upper fan 101, the first lower fan 103, the second upper fan 102, and the second lower fan 104 is greater than or equal to the average noise value of the fan of a conventional dual-fan unit within 3dB. 2. The average noise value of the four-fan unit is greater than or equal to the average noise value of the conventional dual-fan unit within 2dB. 3. The noise amplitude of the fan of the four-fan unit is less than or equal to 60dB. 4. There should be no abnormal sound with obvious periodic changes in hearing.

[0347] In some embodiments, the first selection condition may be to satisfy at least three of the four setting requirements of the noise value.

[0348] In some embodiments, the first selection condition may be at least two of four items that meet the setting requirements of the noise value.

[0349] In some embodiments, in the method for obtaining the distance b corresponding to the maximum air volume,

[0350] The distance B can be divided into 5 areas of equal length, and the middle value of each area is taken as the measuring point. The positions of the first lower fan 103 and the second lower fan 104 remain unchanged, and the positions of the first upper fan 101 and the second upper fan 102 are adjusted. Taking the first upper fan 101 as an example, the third position point 1012 on the first upper fan 101 is adjusted to 1B / 10, 3B / 10, 5B / 10, 7B / 10, and 9B / 10 distances as measuring points, and the distance b between the third position point 1012 and the fourth position point 1031 is used to test the air volume of the unit under the preset static pressure outside the machine. The area where the measuring point of the optimal air volume among the above 5 measuring points is located is the optimal air volume area. The optimal air volume area is further divided and tested according to the above principles, and the measuring point and the optimal air volume area for determining the optimal air volume can be further subdivided. The specific number of rounds of testing can be determined according to the actual situation. The more rounds of testing, the greater the workload, but the better the values ​​of a and b, and it can be set to be greater than or equal to 2 rounds of testing.

[0351] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0352] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0353] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0354] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An air conditioner outdoor unit, characterized in that: include: A casing having a first cavity disposed therein and a second opening disposed on the casing; A heat exchange air inlet is arranged on the casing; A heat exchange air outlet is arranged on the housing, and the heat exchange air inlet and the heat exchange air outlet are connected to the first cavity; an outdoor heat exchanger, disposed in the first chamber; A first fan, disposed in the first cavity, the first fan is used to drive outdoor air to flow through the heat exchange air inlet, through the outdoor heat exchanger, and out through the heat exchange air outlet; A fan assembly is arranged on the top of the housing, and the fan assembly is detachably connected to the housing through a fastening assembly. The fan assembly includes: A shell is arranged on the top of the housing, a second cavity is formed inside the shell, and a first opening is provided on the shell; A fan air inlet is arranged on the housing, and the fan air inlet is arranged opposite to the heat exchange air outlet; A fan air outlet is arranged on the housing, and the fan air inlet and the fan air outlet are connected to the second cavity; A second fan is arranged inside the housing, and the second fan is used to drive the air in the first cavity into the second cavity through the fan air inlet, and then discharged to the outside through the fan air outlet; The fastening assembly comprises: A fastener for connecting the housing and the shell; A first connecting member connected to the housing, wherein the first connecting member is provided with a through hole, and the through hole is arranged corresponding to the second opening; a second connecting member, disposed in the housing and located above the first opening, the second connecting member being used to connect to the fastener; The first opening is formed at the top of the fastener, the second connecting member is connected to the top of the fastener to connect at least a portion of the shell to the fastener, the bottom of the fastener is inserted into the through hole, and the fastener is connected to the first connecting member to connect the fastener to the casing.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The first connecting member is disposed in the first opening, and the first connecting member is provided with a protrusion extending toward the middle of the through hole; The fastener is provided with a recessed portion, and the recessed portion is recessed toward the inside of the fastener; The bottom of the fastener is inserted into the through hole, and the protrusion cooperates with the recessed portion to connect the fastener to the housing.

3. An air conditioner outdoor unit, characterized in that: include: A casing having a first cavity disposed therein and a second opening disposed on the casing; A heat exchange air inlet is arranged on the casing; A heat exchange air outlet is arranged on the housing, and the heat exchange air inlet and the heat exchange air outlet are connected to the first cavity; an outdoor heat exchanger, disposed in the first chamber; A first fan, disposed in the first cavity, the first fan is used to drive outdoor air to flow through the heat exchange air inlet, through the outdoor heat exchanger, and out through the heat exchange air outlet; A fan assembly is arranged on the top of the housing, and the fan assembly is detachably connected to the housing through a fastening assembly. The fan assembly includes: A shell is arranged on the top of the housing, a second cavity is formed inside the shell, and a first opening is provided on the shell; A fan air inlet is arranged on the housing, and the fan air inlet is arranged opposite to the heat exchange air outlet; A fan air outlet is arranged on the housing, and the fan air inlet and the fan air outlet are connected to the second cavity; A second fan is arranged inside the housing, and the second fan is used to drive the air in the first cavity into the second cavity through the fan air inlet, and then discharged to the outside through the fan air outlet; The fastening assembly comprises: A fastener, the top of which is provided with the first opening, the bottom of which is provided with the second opening, and the fastener is provided with a recessed portion; A first connecting member connected to the housing, the first connecting member is provided with a through hole, the through hole is arranged corresponding to the second opening, and the first connecting member is provided with a protrusion protruding toward the middle of the through hole; A second connecting member, disposed in the housing and used to connect the fastening member; The second connecting member is connected to the top of the fastener to connect at least part of the shell to the fastener, the bottom of the fastener is inserted into the through hole, and the protrusion cooperates with the recessed portion to connect the fastener to the housing.

4. The air conditioner outdoor unit according to claim 1 or 3, characterized in that: The housing comprises a top plate, at least a portion of the top plate is located at the top of the housing, and the second opening is provided on the top plate; The housing comprises a connecting plate, at least a portion of which is located at the bottom of the housing, and the first opening is provided on the connecting plate; The second connecting member is connected to the top of the fastener to connect the connecting plate to the fastener; the bottom of the fastener is inserted into the through hole and the second opening to connect the fastener to the first connecting member.

5. The air conditioner outdoor unit according to claim 2 or 3, characterized in that: The fastener comprises: a first boss, the first boss being located above the recessed portion; When the second connecting member is connected to the top of the fastener, at least a portion of the shell is located between the second connecting member and the first boss, and the second connecting member connects the fastener to the shell.

6. The air conditioner outdoor unit according to claim 5, characterized in that: The fastener further includes: a second boss, the second boss being located below the recessed portion; When the fastener is inserted into the through hole, the protrusion is elastically deformed to abut against the second boss; When the fastener is inserted into the recessed portion and matched with the protrusion, the protrusion is located between the first boss and the second boss.

7. The air conditioner outdoor unit according to claim 1 or 3, characterized in that: The fastening assembly further includes: a shock absorbing pad, the shock absorbing pad being arranged between the housing and the shell; The housing further comprises: a protruding portion, the protruding portion protruding in a direction away from the housing, a third cavity being formed on a side of the protruding portion close to the housing; the first opening is arranged on the protruding portion; After the shell and the casing are connected via the fastening assembly, at least a portion of the shock-absorbing pad is located in the third cavity.

8. The air conditioner outdoor unit according to claim 1 or 3, characterized in that: The first connecting member further includes a limiting portion, which is disposed on the periphery of the first connecting member and cooperates with the second opening to limit the first connecting member in the second opening.

9. The air conditioner outdoor unit according to claim 2 or 3, characterized in that: The protrusion on the first connecting member is made of flexible material, and the protrusion and the first connecting member are integrally formed.

10. The air conditioner outdoor unit according to claim 1 or 3, characterized in that: The rotation axis of the first fan is arranged to coincide with the rotation axis of the second fan.

Images