CN213810899U - Fan for air conditioner outdoor unit and air conditioner outdoor unit - Google Patents

Abstract

The utility model belongs to the technical field of the air conditioner, concretely relates to fan and air condensing units for air condensing units. The utility model discloses what aim at solving current air condensing units existence avoids the defrosting in-process to freeze the cost-push that can lead to the air conditioner through setting up heating device, and has the problem of electric leakage hidden danger. Mesh for this reason the utility model discloses in first main motor drive wheel hub rotates and drives the blade and produce the amount of wind, and the transmission is engaged with first master gear to the first pinion of first auxiliary motor drive, makes and connects the blade on wheel hub through first pivot and wind wheel hub's radial rotation to change the wind direction of fan. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the fan can blow towards the blowing cross section at the height position with the ice hanging risk on the outdoor heat exchanger in time by adjusting the range of the air outlet angle of the fan, and the quick flow of the defrosted water below the blowing cross section with the ice hanging risk is ensured.

Description

Fan for air conditioner outdoor unit and air conditioner outdoor unit

Technical Field

The utility model belongs to the technical field of the air conditioner, concretely relates to fan and air condensing units for air condensing units.

Background

The air conditioning unit comprises an outdoor unit and an indoor unit, when the air conditioning unit heats, an outdoor heat exchanger in the outdoor unit is used as an evaporator to absorb heat, and moisture in outdoor air can be condensed into frost on the outdoor heat exchanger under the condition of low outdoor environment temperature, so that the heat exchange efficiency of the outdoor heat exchanger and the heating effect of the air conditioning unit are reduced. At this time, defrosting of the outdoor heat exchanger is also required.

In the defrosting process, the outdoor heat exchanger in the outdoor unit is used as a condenser to release heat so as to melt frost on the surface of the outdoor heat exchanger, and because the flow rate of generated defrosting water is low, the defrosting water can easily hang ice on fins of the outdoor heat exchanger, fixing plates of the fins and a water receiving disc, so that the defrosting is not thorough. The conventional outdoor unit generally has heating devices disposed on the fin fixing plate and the water receiving tray to prevent freezing during defrosting.

However, the installation of the heating device in the outdoor unit increases the cost of the air conditioner, and has a problem of a potential leakage.

Accordingly, there is a need in the art for a new fan for an outdoor unit of an air conditioner and an outdoor unit of an air conditioner to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem among the prior art, avoid the cost-push that the defrosting in-process freezes and can lead to the air conditioner through setting up heating device for solving the existence of current air condensing units, and there is the problem of electric leakage hidden danger, the utility model provides a fan and air condensing units for air condensing units.

First, in a fan for an outdoor unit of an air conditioner according to the present invention, the fan includes a hub, a plurality of blades, a first main motor, a first sub-motor, a first main gear, and a first sub-gear; the blades are arranged on the periphery of the hub at intervals around the axis of the hub, and the output shaft of the first main motor is coaxially connected with the hub; the blades are rotatably connected to the hub through a first rotating shaft, the first rotating shaft is arranged along the radial direction of the hub, and a first pinion is arranged on the first rotating shaft; the hub is provided with a first auxiliary motor, an output shaft of the first auxiliary motor is provided with a first main gear, and the first auxiliary motor is arranged to drive the first auxiliary gear to be in meshing transmission with the first main gear, so that the blades rotate around the first rotating shaft.

As a preferred technical solution of the above fan provided by the present invention, the fan further comprises a wind deflector and a frame, wherein one end of the wind deflector is provided with a wind grid and the other end is connected with the frame; the shell of the first main motor is connected to the frame, and one end, connected with the hub, of the first main motor faces the air grid.

As a preferable technical solution of the above fan provided by the present invention, the fan further comprises a connecting rod and a fixing ring; the connecting rod is arranged on the shell of the first main motor, and a first connecting hole is formed in the connecting rod; the fixing ring is provided with a second connecting hole; the first main motor passes through the fixing ring and a fastener passes through the first connection hole and the second connection hole to connect the connection rod and the fixing ring; the first main motor is connected to the rack through the fixing ring.

As a preferable technical solution of the above fan provided by the present invention, the frame includes a fixing plate and an extension arm; the fixed plate is connected in the outside of kuppe, the extension arm is connected the fixed plate dorsad one side of kuppe, first main motor passes through solid fixed ring connects on the extension arm of frame.

As the utility model provides an optimal technical scheme of above-mentioned fan, wheel hub includes along its axial axle sleeve, the output shaft of first main motor stretches into the axle sleeve and with the bushing.

As a preferable technical solution of the above fan provided by the present invention, at least one side of the output shaft of the first main motor along the length direction thereof is set to be a plane; at least one side of the shaft hole of the shaft sleeve along the length direction of the shaft hole is set to be a plane.

Then, in the utility model provides an air condensing units, air condensing units includes outdoor heat exchanger and the fan of any one of above technical scheme; the outdoor heat exchanger is positioned at the lower part of the fan; the outdoor heat exchanger comprises a refrigerant pipe and a plurality of fins, the fins are parallel to the axis of the fan and are arranged at intervals, and the refrigerant pipe transversely extends among the fins and is inserted back and forth to form a refrigerant flow path from top to bottom.

As the utility model provides an above-mentioned air condensing units's an preferred technical scheme, the fin and/or be provided with temperature sensor on the refrigerant pipe.

As a preferred technical solution of the above air conditioner outdoor unit provided by the present invention, the temperature sensor has a plurality of temperature sensors; the plurality of temperature sensors are respectively arranged at each height position of the refrigerant pipe in the transverse direction.

As the utility model provides an above-mentioned air condensing units's an preferred technical scheme, air condensing units still includes the water collector, the water collector sets up outdoor heat exchanger's lower part.

The utility model provides a pair of in fan and air condensing units for air condensing units, first main motor drive wheel hub rotates and drives the blade and produce the amount of wind, and the transmission is engaged with first master gear to the first pinion of first pair motor drive, makes and connects the blade on wheel hub around wheel hub's radial rotation through first pivot to change the wind direction of fan. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the fan can blow air towards the outdoor heat exchanger, and the fan can blow air towards the blowing cross section at the height position with ice hanging risk on the outdoor heat exchanger in time by adjusting the range of the air outlet angle, so that the quick flow of the defrosted water below the blowing cross section with the ice hanging risk is ensured, the effect of downward flow of the defrosted water on the outdoor heat exchanger is improved, and the problem of poor defrosting effect caused by ice hanging of the outdoor heat exchanger is effectively prevented.

Furthermore, the utility model provides a pair of among the air condensing units, be provided with a plurality of temperature sensor on outdoor heat exchanger's fin and/or the refrigerant pipe, a plurality of temperature sensor set up respectively in each high position of refrigerant pipe lateral extension. So, this position and the quantity setting of temperature sensor can match the refrigerant at the in-process that from top to bottom flows, and the temperature of refrigerant is with the law that hangs ice risk of low and outdoor heat exchanger increases gradually to can confirm the air-out angle scope of fan according to the actual temperature of the different high positions of outdoor heat exchanger better, and further prevented outdoor heat exchanger effectively and hung ice and lead to the poor problem of defrosting effect.

Drawings

The fan for an outdoor unit of an air conditioner and the outdoor unit of an air conditioner of the present invention will be described with reference to the accompanying drawings. In the drawings:

fig. 1 is a schematic structural view of an outdoor unit of an air conditioner according to the present embodiment;

fig. 2 is a schematic view illustrating positions of an outdoor heat exchanger and a fan in the outdoor unit of the air conditioner according to the present embodiment;

fig. 3 is a schematic structural view of a fan in the outdoor unit of an air conditioner according to the present embodiment;

FIG. 4 is a schematic view of the connection structure of the blades of the fan in the embodiment 1;

fig. 5 is a schematic view of a connection structure of a first main motor in the fan of the embodiment 1;

fig. 6 is a schematic view of a connection structure of a second main motor in the fan of the embodiment 2;

fig. 7 is a schematic view of a connection structure of a second sub-motor in the fan of the embodiment 2;

fig. 8 is a flowchart illustrating a defrosting control method for an outdoor unit of an air conditioner according to this embodiment.

List of reference numerals

1-outdoor heat exchanger; 11-a fin; 12-a refrigerant pipe; 13-a temperature sensor; 14-a water pan;

2-a fan;

21-a hub;

22-a blade;

231-a first main motor; 232-a second main motor; 233-connecting rod; 234-a fixed ring; 235-a second rotating shaft;

241-a first secondary motor; 242-a second secondary electric machine;

251-a first main gear; 252-a second main gear;

261-a first pinion; 262-a second counter gear;

27-a flow guide sleeve; 271-air grid;

28-a frame; 281-fixing plate; 282-extension arm.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the fan of the outdoor unit of the air conditioner is disposed on the top of the air conditioner in the drawings, the position relationship is not constant, and those skilled in the art can adjust the fan as needed to suit the specific application without departing from the principles of the present invention. For example, the fan may be disposed at the front side of the outdoor unit of the air conditioner, and the defrosting control method of the present invention may be applied when the fan is disposed at the front side of the outdoor unit of the air conditioner.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

[ example 1 ]

In order to solve the above problems in the prior art, that is, to solve the problems that the cost of the air conditioner is increased and the electric leakage hidden trouble exists in the conventional air conditioner outdoor unit by setting a heating device to prevent the air conditioner from being frozen in the defrosting process, the present embodiment provides a fan 2 for an air conditioner outdoor unit and an air conditioner outdoor unit.

First, in the fan 2 for an outdoor unit of an air conditioner provided in the present embodiment, as shown in fig. 3 to 5, the fan 2 includes a hub 21, a plurality of blades 22, a first main motor 231, a first sub-motor 241, a first main gear 251, and a first sub-gear 261; a plurality of blades 22 are arranged on the outer periphery of the hub 21 at intervals around the axis of the hub 21, and the output shaft of the first main motor 231 is coaxially connected with the hub 21; the blades 22 are rotatably connected to the hub 21 by a first rotating shaft (not shown in the figure) which is arranged along the radial direction of the hub 21 and is provided with a first pinion 261; the hub 21 is provided with a first sub-motor 241, an output shaft of the first sub-motor 241 is provided with a first main gear 251, and the first sub-motor 241 is configured to drive a first sub-gear 261 to mesh with the first main gear 251, so as to rotate the blades 22 around a first rotation axis.

Illustratively, the hub 21 may include a boss (not shown) along an axial direction thereof, into which an output shaft of the first main motor 231 extends and is fixedly coupled. For example, the output shaft of the second main motor 232 may be fixedly connected with the bushing by interference fit or bolting.

Meanwhile, in order to prevent the output shaft of the first main motor 231 from rotating relative to the shaft sleeve when the first main motor 231 drives the hub 21 to rotate, at least one side of the output shaft of the first main motor 231 in the length direction thereof may be set to be a plane; meanwhile, at least one side of the shaft hole of the shaft sleeve along the length direction of the shaft hole is set to be a plane.

In the fan 2 for the outdoor unit of the air conditioner provided in the present embodiment, the first main motor 231 drives the hub 21 to rotate and drive the blades 22 to generate the air volume, and the first sub-motor 241 drives the first sub-gear 261 to mesh with the first main gear 251, so that the blades 22 connected to the hub 21 through the first rotating shaft rotate around the radial direction of the hub 21 to change the wind direction of the fan 2. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the fan 2 can blow air towards the outdoor heat exchanger 1, and can blow air towards the blowing cross section at the height position with ice hanging risk and the part below the blowing cross section at the height position with ice hanging risk on the outdoor heat exchanger 1 in time by adjusting the range of the air outlet angle, so that the quick flow of the defrosting water below the blowing cross section with ice hanging risk is ensured, the effect of downward flow of the defrosting water on the outdoor heat exchanger 1 is improved, and the problem of poor defrosting effect caused by ice hanging of the outdoor heat exchanger 1 is effectively prevented.

As a preferred embodiment of the above fan 2 provided in this embodiment, the fan 2 further includes a wind deflector 27 and a frame 28, one end of the wind deflector 27 is provided with a wind fence 271, and the other end is connected to the frame 28; the housing of the first main motor 231 is attached to the frame 28, and the end of the first main motor 231 attached to the hub 21 faces the air grid 271.

For example, the air guide sleeve 27 can improve the efficiency of wind entering or blowing out from the outdoor unit, and the air grid 271 on the air guide sleeve 27 can prevent foreign matters from entering the fan 2 and the outdoor unit, thereby ensuring the reliability of the operation of the fan 2 and the outdoor unit. Meanwhile, the air guide sleeve 27 is connected to the first main motor 231 through a frame 28, and the frame 28 is fixed to the casing of the outdoor unit by welding or bolting.

As a preferred embodiment of the above fan 2 provided in this embodiment, the fan 2 further includes a connecting rod 233 and a fixing ring 234; the link bar 233 is disposed on the housing of the first main motor 231, the link bar 233 having a first connection hole; the fixing ring 234 has a second coupling hole; the first main motor 231 passes through the fixing ring 234 and the fastener (not shown) passes through the first and second coupling holes to couple the coupling bar 233 and the fixing ring 234; the first main motor 231 is connected to the frame 28 through a fixing ring 234.

Illustratively, one connecting rod 233 is disposed on each of both sides of the housing of the first main motor 231, and two connecting rods 233 are disposed on both sides of the axis of the fixing ring 234, so as to achieve reliable connection of the first main motor 231 and the fixing ring 234 and improve the connection strength of the first main motor 231 and the frame 28.

As a preferred embodiment of the above fan 2 provided in this embodiment, the frame 28 includes a fixing plate 281 and an extension arm 282; the fixing plate 281 is connected to the outside of the pod 27, the extension arm 282 is connected to a side of the fixing plate 281 facing away from the pod 27, and the first main motor 231 is connected to the extension arm 282 of the rack 28 through the fixing ring 234.

Illustratively, the fixing plate 281 is mainly used to connect the fan 2 to the casing of the outdoor unit of the air conditioner, in addition to connecting the pod 27 and the extension 282. One end of the extension arm 282 may be connected to the fixing plate 281 by means of a bolt connection, and the other end of the extension arm 282 may be connected to the fixing ring 234 by means of a welding connection.

Then, in an outdoor unit of an air conditioner provided in this example, as shown in fig. 1 and 2, the outdoor unit of the air conditioner includes an outdoor heat exchanger 1 and a fan 2 of any one of the above embodiments (example 1); the outdoor heat exchanger 1 is positioned at the lower part of the fan 2; the outdoor heat exchanger 1 includes a refrigerant pipe 12 and a plurality of fins 11, the plurality of fins 11 are arranged in parallel to the axis of the fan 2 at intervals, and the refrigerant pipe 12 transversely extends between the plurality of fins 11 and is inserted back and forth to form a refrigerant flow path from top to bottom.

For example, since the air-conditioning outdoor unit in this [ embodiment 1 ] uses the fan 2 described above and shown in fig. 3 to 5, during defrosting of the air-conditioning outdoor unit, the wind direction of the fan 2 can be changed to blow air toward the outdoor heat exchanger 1, and the fan 2 can timely blow air toward the air-blowing cross section at the height position of the outdoor heat exchanger 1 where there is a risk of ice hanging and the portion below the air-blowing cross section by adjusting the range of the air-outlet angle of the fan 2, so as to improve the effect of downward flow of the defrosting water on the outdoor heat exchanger 1, and effectively prevent the problem of poor defrosting effect caused by ice hanging of the outdoor heat exchanger 1.

As a preferred embodiment of the outdoor unit of an air conditioner according to the present embodiment, as shown in fig. 2, a temperature sensor 13 is provided on the fin 11 and/or the refrigerant pipe 12. Accordingly, the actual temperature of the surface of the outdoor heat exchanger 1 can be detected by the temperature sensor 13, and the wind direction and the wind outlet angle range of the fan 2 can be controlled according to the actual temperature of the outdoor heat exchanger 1.

As a preferred embodiment of the outdoor unit of an air conditioner provided in this embodiment, there are a plurality of temperature sensors 13 disposed on the outdoor heat exchanger; the plurality of temperature sensors 13 are respectively provided at respective height positions at which the refrigerant pipe 12 extends in the lateral direction.

For example, the fins 11 and/or the refrigerant tubes 12 of the outdoor heat exchanger 1 are provided with a plurality of temperature sensors 13, and the plurality of temperature sensors 13 are respectively provided at respective height positions of the refrigerant tubes 12 extending in the lateral direction. Since the temperatures of the refrigerant tubes 12 and the fins 11 at the same height position are basically the same, the temperature sensor 13 at the same height position can basically meet the temperature detection requirement at the height position. So, this position and quantity that sets up of temperature sensor 13 can match the refrigerant at the in-process that from top to bottom flows, and the temperature of refrigerant is with the law that hangs ice risk increase gradually of low and outdoor heat exchanger 1 gradually to can confirm the air-out angle scope of fan 2 according to the actual temperature of the not co-altitude position of outdoor heat exchanger 1 better, and further prevent effectively that outdoor heat exchanger 1 from hanging the problem that the ice leads to defrosting effect poor.

As a preferred embodiment of the outdoor unit of an air conditioner provided in this embodiment, the outdoor unit of an air conditioner further includes a water pan 14, and the water pan 14 is disposed at a lower portion of the outdoor heat exchanger 1. Therefore, the defrosting water flowing down from the outdoor heat exchanger 1 can be treated in a centralized way through the water receiving disc 14, and the defrosting water generated by the outdoor unit of the air conditioner is prevented from being discharged in disorder to generate adverse effects on the living environment of people.

Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.

[ example 2 ]

In order to solve the above problems in the prior art, that is, to solve the problems that the cost of the air conditioner is increased and the electric leakage hidden trouble exists in the conventional air conditioner outdoor unit by setting a heating device to prevent the air conditioner from being frozen in the defrosting process, the present embodiment provides a fan 2 for an air conditioner outdoor unit and an air conditioner outdoor unit.

First, in the fan 2 for an outdoor unit of an air conditioner provided in the present embodiment, as shown in fig. 3, 6 and 7, the fan 2 includes a hub 21, a plurality of blades 22, a frame 28, a second main motor 232, a second sub-motor 242, a second sub-gear 262 and a second main gear 252; the blades 22 are arranged on the periphery of the hub 21 at intervals around the axis of the hub 21, and the output shaft of the second main motor 232 is coaxially connected with the hub 21; the outer periphery of the second main motor 232 is rotatably connected to the frame 28 through a second rotating shaft 235, the second rotating shaft 235 is disposed along the radial direction of the second main motor 232, a second sub-gear 262 is disposed on the second rotating shaft 235, a second sub-motor 242 is disposed on the frame 28, a second main gear 252 is disposed on an output shaft of the second sub-motor 242, and the second sub-motor 242 is configured to drive the second main gear 252 to mesh with the second sub-gear 262, so that the hub 21 rotates around the second rotating shaft 235.

Illustratively, one end of the second shaft 235 is fixedly connected to the second main motor 232, and the other end of the second shaft 235 is rotatably connected to the frame 28. The fan 2 may be connected to the casing of the outdoor unit through a frame 28, for example, the frame 28 is fixedly connected to the casing of the outdoor unit by welding or bolting. The second main motor 232 drives the hub 21 and the blades 22 to rotate 360 degrees around the second rotating shaft 235, so as to adjust the wind direction of the fan 2. The frame 28 is fixedly coupled to the casing of the outdoor unit by welding or bolting.

As a preferred embodiment of the above fan 2 provided in this embodiment, the hub 21 includes a shaft sleeve (not shown in the drawings) along an axial direction thereof, and the output shaft of the second main motor 232 extends into the shaft sleeve and is connected with the shaft sleeve, for example, the output shaft of the second main motor 232 may be fixedly connected with the shaft sleeve by interference fit or bolt connection. In order to prevent the output shaft of the second main motor 232 and the shaft sleeve from rotating relatively when the second main motor 232 drives the hub 21 to rotate, at least one side of the output shaft of the first main motor 231 in the length direction thereof may be set to be a plane; meanwhile, at least one side of the shaft hole of the shaft sleeve along the length direction of the shaft hole is set to be a plane.

In the fan 2 for an outdoor unit of an air conditioner of the present embodiment, the second main motor 232 drives the hub 21 to rotate and drive the blades 22 to generate air volume, and the second sub-motor 242 drives the second sub-gear 262 to engage with the second main gear 252, so that the second main motor 232 connected to the frame 28 through the second rotating shaft 235 rotates around the radial direction thereof. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the wind direction of the fan 2 can be changed to blow towards the outdoor heat exchanger 1, and the fan 2 can timely blow towards the blowing cross section and the lower part of the height position of the outdoor heat exchanger 1 with ice hanging risk by adjusting the range of the wind swinging angle, so that the effect of downward flowing of defrosting water on the outdoor heat exchanger 1 is improved, and the problem of poor defrosting effect caused by ice hanging of the outdoor heat exchanger 1 is effectively prevented.

As a preferred embodiment of the above fan 2 provided in this embodiment, the fan 2 further includes a connecting rod 233 and a fixing ring 234; the connection bar 233 is disposed on the case of the second main motor 232, and the connection bar 233 has a first connection hole; the fixing ring 234 has a second coupling hole; the second main motor 232 passes through the fixing ring 234 and a fastener (not shown) passes through the first and second coupling holes to couple the coupling bar 233 and the fixing ring 234; the fixed ring 234 is connected to a second rotating shaft 235.

Illustratively, one connecting rod 233 is disposed on each of both sides of the case of the second main motor 232, and two connecting rods 233 are disposed on both sides of the axis of the fixing ring 234, so as to achieve reliable connection of the second main motor 232 and the fixing ring 234 and improve the connection strength of the second main motor 232 and the fixing ring 234. Further, the second rotating shaft 235 may be connected to the fixing ring 234 by welding or bolting.

As a preferred embodiment of the above-mentioned fan 2 provided by this embodiment, the fan 2 further includes a flow guiding cover 27, one end of the flow guiding cover 27 is provided with a wind fence 271, and the other end is connected with the frame 28.

For example, the air guide sleeve 27 can improve the efficiency of wind entering into or blowing out from the outdoor unit of the air conditioner, and the air grid 271 on the air guide sleeve 27 can prevent foreign matters from entering into the fan 2, thereby ensuring the reliability of the operation of the fan 2 and the outdoor unit of the air conditioner.

As a preferred embodiment of the above fan 2 provided in this embodiment, the frame 28 includes a fixing plate 281 and an extension arm 282; the fixing plate 281 is connected to the outer side of the pod 27, the extension arm 282 is connected to a side of the fixing plate 281 facing away from the pod 27, the second sub-motor 242 is disposed on the extension arm 282, and the extension arm 282 is rotatably connected to the second rotating shaft 235.

In addition to the attachment of the pod 27 and the extension 282, the attachment plate 281 also connects the fan 2 to the housing of the outdoor unit, i.e., the frame 28 is connected to the housing of the outdoor unit. One end of the extension arm 282 may be connected to the fixing plate 281 by a bolt, and the other end of the extension arm 282 may be provided with a bearing or a round hole for rotating one end of the second shaft 235.

Then, this example also provides an outdoor unit of an air conditioner, as shown in fig. 1 and fig. 2, the outdoor unit of an air conditioner includes an outdoor heat exchanger 1 and a fan 2 according to any one of the above embodiments (example 2); the outdoor heat exchanger 1 is positioned at the lower part of the fan 2; the outdoor heat exchanger 1 includes a refrigerant pipe 12 and a plurality of fins 11, the plurality of fins 11 are arranged in parallel to the axis of the fan 2 at intervals, and the refrigerant pipe 12 transversely extends between the plurality of fins 11 and is inserted back and forth to form a refrigerant flow path from top to bottom.

For example, since the air-conditioning outdoor unit of this [ embodiment 2 ] uses the fan 2 described above and shown in fig. 3, 6, and 7, during defrosting of the air-conditioning outdoor unit, the wind direction of the fan 2 can be changed to blow air toward the outdoor heat exchanger 1, and the fan 2 can timely blow air toward the air-blowing cross section at a height position where there is a risk of ice hanging on the outdoor heat exchanger 1 and a portion below the air-blowing cross section by adjusting the range of the swing angle of the fan 2, so as to improve the effect of downward flow of defrosted water on the outdoor heat exchanger 1, and effectively prevent the problem of poor defrosting effect due to ice hanging on the outdoor heat exchanger 1.

As a preferred embodiment of the outdoor unit of an air conditioner according to the present embodiment, the fins 11 and/or the refrigerant tubes 12 of the outdoor heat exchanger 1 are provided with temperature sensors 13. Thus, the actual temperature of the surface of the outdoor heat exchanger 1 can be detected by the temperature sensor 13, and the wind direction and the yaw angle range of the fan 2 can be controlled according to the actual temperature of the outdoor heat exchanger 1.

As a preferred embodiment of the outdoor unit of an air conditioner provided in this embodiment, there are a plurality of temperature sensors 13 disposed on the outdoor heat exchanger; the plurality of temperature sensors 13 are respectively provided at respective height positions at which the refrigerant pipe 12 extends in the lateral direction.

For example, the fins 11 and/or the refrigerant tubes 12 of the outdoor heat exchanger 1 are provided with a plurality of temperature sensors 13, and the plurality of temperature sensors 13 are respectively provided at respective height positions of the refrigerant tubes 12 extending in the lateral direction. The temperature of the refrigerant pipe 12/the fin 11 at the same height position is basically the same, so that the temperature sensor 13 arranged at the same height position can basically meet the temperature detection requirement at the height position. So, this position and quantity that sets up of temperature sensor 13 can match the refrigerant at the in-process that from top to bottom flows, and the temperature of refrigerant is with the law that hangs ice risk of low and outdoor heat exchanger 1 increases gradually to can confirm the pendulum wind angle scope of fan 2 according to the actual temperature of the not co-altitude position of outdoor heat exchanger 1 better, and further prevent effectively that outdoor heat exchanger 1 hangs ice and lead to the poor problem of defrosting effect.

As a preferred embodiment of the outdoor unit of an air conditioner provided in this embodiment, the outdoor unit of an air conditioner further includes a water pan 14, and the water pan 14 is disposed at a lower portion of the outdoor heat exchanger 1. Therefore, the defrosting water flowing down from the outdoor heat exchanger 1 can be treated in a centralized way through the water receiving disc 14, and the defrosting water generated by the outdoor unit of the air conditioner is prevented from being discharged in disorder to generate adverse effects on the living environment of people.

Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.

[ example 3 ]

In order to solve the above problems in the prior art, that is, to solve the problems that the cost of the air conditioner is increased and the hidden danger of electric leakage exists in the conventional air conditioner outdoor unit due to the fact that the heating device is arranged to prevent the air conditioner from being frozen in the defrosting process, the present embodiment provides a defrosting control method for an air conditioner outdoor unit and an air conditioner outdoor unit.

First, referring to fig. 1 to 7, in a defrosting control method of an outdoor unit of an air conditioner according to an embodiment of the present invention, the outdoor unit of the air conditioner includes a fan 2 and an outdoor heat exchanger 1 located below the fan 2. As shown in fig. 8, the control method includes:

s1, acquiring actual temperature values of the outdoor heat exchanger 1 at each height position of the refrigerant pipe 12 in the transverse extension mode;

s2, judging whether the actual temperature values of all the height positions are all larger than a preset icing temperature value;

and S3, if the actual temperature values of the height positions are not all larger than the preset icing temperature value, controlling the fan 2 to blow air towards the outdoor heat exchanger 1.

For example, as shown in fig. 2, in the outdoor heat exchanger 1 of the outdoor unit of the air conditioner, the plurality of fins 11 are generally arranged in a vertical direction, the refrigerant tubes 12 transversely penetrate through the plurality of fins 11, and then two adjacent transversely arranged refrigerant tubes 12 are connected by a bent pipe to form a refrigerant flow path. The refrigerant enters from the uppermost inlet end of the refrigerant pipe 12 in the flowing process, passes through the plurality of refrigerant pipes 12 arranged transversely, and then flows out from the lowermost outlet of the refrigerant pipe 12. Meanwhile, in the defrosting process of the outdoor unit of the air conditioner, the temperature of the refrigerant just beginning to enter the refrigerant pipe 12 is high, heat is continuously released in the flowing process to defrost the fin 11 and the refrigerant pipe 12, and the temperature of the refrigerant is gradually reduced in the flowing process. Since the lower portion of the outdoor heat exchanger 1 has a low temperature and the defrosting water flows downward, the risk of ice hanging on the outdoor heat exchanger 1 from top to bottom is gradually increased. The air conditioning outdoor unit is provided with temperature sensors 13 at respective height positions of the outdoor heat exchanger 1 at which the refrigerant pipes 12 extend in the lateral direction, and detects actual temperature values of the outdoor heat exchanger 1 at the respective height positions of the refrigerant pipes 12 at which the temperature sensors 13 extend in the lateral direction.

The preset icing temperature value in this embodiment is a temperature value determined according to the degree of difficulty of icing of the defrosted water in the flowing process, and may be, for example, -20 ℃ or other values. It can be understood that if the preset icing temperature value is set to be higher, the outdoor unit of the air conditioner can be better ensured to avoid ice hanging, but the working time of the fan 2 is longer; if the preset freezing temperature value is set to be lower, the reliability of preventing the outdoor unit of the air conditioner from hanging ice is ensured to be reduced, but the working time of the fan 2 is shortened. The specific value of the preset icing temperature value can be determined by a person skilled in the art according to actual needs.

When the air conditioning unit heats or cools, the air outlet surface of the fan 2 of the air conditioning outdoor unit generally faces away from the outdoor heat exchanger 1, that is, the fan 2 blows air outwards. In order to prevent the outdoor heat exchanger 1 from icing, in the embodiment, when defrosting, if the actual temperature values at the height positions are not all greater than the preset icing temperature value, that is, the actual temperature at a certain position of the outdoor heat exchanger 1 is low and the phenomenon of icing is likely to occur, the fan 2 is controlled to blow air towards the outdoor heat exchanger 1.

It can be understood that after the outdoor unit exits the defrosting mode, the outlet surface of the fan 2 can be controlled to face away from the outdoor heat exchanger 1.

According to the defrosting control method of the outdoor unit of the air conditioner in the embodiment, the fan 2 is controlled to blow air towards the outdoor heat exchanger 1 by judging whether the actual temperature values of the outdoor heat exchanger 1 at the height positions where the refrigerant pipes 12 extend transversely are all greater than the preset icing temperature value, and when the actual temperature values of the height positions are not all greater than the preset icing temperature value. Therefore, when the actual temperature value of the outdoor heat exchanger 1 is less than or equal to the preset icing temperature value, the fin 11 of the outdoor heat exchanger 1 is easy to hang ice, at the moment, the fan blows air to the outdoor heat exchanger 1, frost melting water on the outdoor heat exchanger 1 can flow down rapidly, and the problem that the defrosting effect is poor due to ice hanging of the outdoor heat exchanger 1 is solved.

As a preferable embodiment of the above-described defrosting control method provided in this embodiment, when the fan 2 is controlled to blow air toward the outdoor heat exchanger 1 in step S3, the defrosting control method further includes: the air outlet surface of the fan 2 can cover one side of the outdoor heat exchanger 1 facing the fan 2; alternatively, the air outlet surface of the fan 2 is reciprocated between the sides of the outdoor heat exchanger 1 facing the fan 2.

For example, in the fan 2 shown in fig. 4 and 5, the first main motor 231 drives the hub 21 to rotate to drive the blades 22 to generate air flow, and the first auxiliary motor 241 drives the first auxiliary gear 261 to mesh with the first main gear 251, so that the blades 22 connected to the hub 21 via the first rotating shaft rotate around the radial direction of the hub 21. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the wind direction of the fan 2 can be changed to blow air towards the outdoor heat exchanger 1, and the air outlet surface of the fan 2 can cover one side of the outdoor heat exchanger 1 facing the fan 2 by adjusting the range of the air outlet angle. Therefore, the fan 2 can timely blow air to the whole outdoor heat exchanger 1, so that the effect of downward flowing of the defrosting water on the outdoor heat exchanger 1 is improved, and the problem of poor defrosting effect caused by ice hanging of the outdoor heat exchanger 1 is effectively prevented.

In the fan 2 shown in fig. 6 and 7, the second main motor 232 drives the hub 21 to rotate and drive the blades 22 to generate air volume, and the second sub-motor 242 drives the second sub-gear 262 to engage with the second main gear 252, so that the second main motor 232 connected to the frame 28 via the second rotating shaft 235 rotates in the radial direction thereof. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the wind direction of the fan 2 can be changed to blow air to the outdoor heat exchanger 1, and the air outlet surface of the fan 2 can be moved back and forth between the outdoor heat exchanger 1 and the side facing the fan 2 by adjusting the range of the swing angle of the fan 2. Therefore, the fan 2 can timely blow air to the whole outdoor heat exchanger 1, so that the effect of downward flowing of the defrosting water on the outdoor heat exchanger 1 is improved, and the problem of poor defrosting effect caused by ice hanging of the outdoor heat exchanger 1 is effectively prevented.

As a preferable implementation of the above-mentioned defrosting control method provided in this embodiment, the defrosting control method further includes: before the fan 2 is controlled to blow air towards the outdoor heat exchanger 1 in step S3, determining the maximum height position corresponding to the actual temperature value among all the actual temperature values which are less than or equal to the preset icing temperature value, and determining the cross section of the outdoor heat exchanger 1 at the maximum height position as the blowing cross section; and, when the fan 2 is controlled to blow air toward the outdoor heat exchanger 1 in step S3, the blowing cross section is allowed to be covered by the air-out face of the fan 2 or the air-out face of the fan 2 is reciprocated between the boundaries of the blowing cross section.

For example, since the refrigerant in the outdoor heat exchanger 1 flows from top to bottom, the temperature of the upper portion of the outdoor heat exchanger 1 is higher while the temperature of the lower portion of the outdoor heat exchanger 1 is lower, and after the maximum height position corresponding to the actual temperature value is determined among all the actual temperature values which are less than or equal to the preset icing temperature value, air can be blown only to a portion of the outdoor heat exchanger 1 where ice is likely to hang, so as to improve the efficiency of preventing the outdoor heat exchanger 1 from hanging ice.

It can be understood that, by adjusting the range of the air outlet angle of the fan 2 as shown in fig. 4 and 5, the air outlet surface of the fan 2 can cover the cross section of the air blowing; the fan 2 shown in fig. 6 and 7 can make the air outlet surface of the fan 2 move back and forth between the boundaries of the air blowing cross section by adjusting the range of the swing angle. In this way, the outlet air of the fan 2 can be blown to the blowing cross section of the outdoor heat exchanger 1 and the part below the blowing cross section of the outdoor heat exchanger 1, so as to accelerate the downward flow of the defrosting water at the part below the blowing cross section of the outdoor heat exchanger 1.

As a preferred embodiment of the above-mentioned defrosting control method provided in this embodiment, as shown in fig. 2, the higher the position of the blowing cross section is, the higher the position of the refrigerant pipe 12 transversely disposed at the height position is, and the fan 2 needs a larger wind outlet angle range or a swing angle range to ensure that the air is blown to the portion below and on the blowing cross section of the outdoor heat exchanger 1.

Therefore, in step S3, when the outlet angle range of the fan 2 can be adjusted (refer to fig. 4 and 5 and the above description), in the mapping relationship between the outlet angle of the fan 2 and the height position of the blowing cross section, the outlet angle range of the fan 2 increases with the increase of the height position of the blowing cross section, so that the outlet surface of the fan 2 can cover the blowing cross section; or when the swing angle range of the fan 2 is adjustable around an axis perpendicular to the main axis thereof (refer to fig. 6 and 7), in the mapping relationship between the swing angle range of the fan 2 and the height position of the blowing cross section, the swing angle range of the fan 2 increases with the increase of the height position of the blowing cross section, so that the air outlet face of the fan 2 reciprocates between the boundaries of the blowing cross section.

As a preferable implementation of the above-mentioned defrosting control method provided in this embodiment, the defrosting control method further includes: when judging whether the actual temperature values of all the height positions are larger than the preset icing temperature value or not in the step 2, comparing the actual temperature values of different height positions with the preset icing temperature value according to the sequence of the height positions from large to small until the actual temperature values are smaller than or equal to the preset icing temperature value, and determining the cross section of the outdoor heat exchanger 1 at the height position corresponding to the actual temperature values smaller than or equal to the preset icing temperature value as the blowing cross section; and, in the step S3, when the fan 2 is controlled to blow air toward the outdoor heat exchanger 1, the air-out surface of the fan 2 is allowed to cover the blowing cross section (which may be realized by the fan 2 shown in fig. 4 and 5) or the air-out surface of the fan 2 is allowed to reciprocate between the boundaries of the blowing cross section (which may be realized by the fan 2 shown in fig. 6 and 7).

Illustratively, whether the actual temperature values of the height positions of the outdoor heat exchanger 1 are all larger than the preset icing temperature value is judged one by one from top to bottom in a short time, so that the judging process is simpler, and the operating efficiency of the defrosting control method of the embodiment is improved.

As a preferred implementation of the above-mentioned defrosting control method provided in this embodiment, it can be understood that, when the actual temperature values at the height positions of the outdoor heat exchanger 1 are all greater than the preset icing temperature value, although step S3 is not required to be executed, since the temperature of the surface of the outdoor heat exchanger 1 may dynamically change, the detection needs to be performed at intervals to ensure that the ice hanging of the outdoor heat exchanger 1 can be prevented in time or the severity of the ice hanging of the outdoor heat exchanger 1 is weakened.

Therefore, the defrost control method may further include: when the fan 2 is controlled to blow air towards the outdoor heat exchanger 1, the actual temperature values of the outdoor heat exchanger 1 at each height position where the refrigerant pipe 12 extends transversely are obtained again at set time intervals.

It should be noted that although the detailed steps of the method of the present embodiment are described in detail above, those skilled in the art can combine, split and exchange the order of the above steps without departing from the basic principle of the present embodiment, and the modified technical solution does not change the basic concept of the present embodiment, and therefore, the modified technical solution also falls within the scope of the description of the present embodiment.

For example, the actual temperature values of the height positions of the outdoor heat exchanger 1 may be obtained at the same time, and after all the actual temperature values of the height positions of the outdoor heat exchanger 1 are obtained, the actual temperature values are compared with the preset icing temperature values; in addition, the actual temperature values of the height positions of the outdoor heat exchanger 1 can be acquired one by one according to the sequence from top to bottom, and the actual temperature value of the next height position of the outdoor heat exchanger 1 can be acquired according to the requirement after comparison.

It should be understood by those skilled in the art that the defrosting control method of the outdoor unit of the air conditioner provided in the present embodiment may be stored as a program in a computer-readable storage medium. The storage medium includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to perform some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

In the outdoor unit of the air conditioner provided in this embodiment and adopting the defrosting control method of any of the above embodiments, as shown in fig. 1 to 5, the fan 2 of the outdoor unit of the air conditioner includes a hub 21, a plurality of blades 22, a first main motor 231, a first sub motor 241, a first main gear 251, and a first sub gear 261; a plurality of blades 22 are arranged on the outer periphery of the hub 21 at intervals around the axis of the hub 21, and the output shaft of the first main motor 231 is coaxially connected with the hub 21; the blades 22 are rotatably connected to the hub 21 through a first rotating shaft, the first rotating shaft is arranged along the radial direction of the hub 21, and a first pinion 261 is arranged on the first rotating shaft; the hub 21 is provided with a first sub-motor 241, an output shaft of the first sub-motor 241 is provided with a first main gear 251, and the first sub-motor 241 is configured to drive a first sub-gear 261 to mesh with the first main gear 251 to rotate the blades 22 around a first rotation axis, so as to adjust the air outlet angle range of the fan 2.

Please refer to embodiment 1 for a detailed description of the outdoor unit of an air conditioner and the fan 2 therein. In addition, when the air-conditioning outdoor unit described in this embodiment that employs the defrosting control method of the foregoing embodiment is used in an air-conditioning unit, the control unit in the air-conditioning unit may control the air-conditioning outdoor unit according to the defrosting control method, so as to achieve the purpose of preventing the outdoor unit from being iced during defrosting in this embodiment.

Meanwhile, in the outdoor unit of an air conditioner provided in this embodiment and adopting the defrosting control method according to any of the above embodiments, as shown in fig. 1, 2, 3, 6 and 7, the fan 2 of the outdoor unit of an air conditioner includes a hub 21, blades 22, a frame 28, a second main motor 232, a second sub-motor 242, a second sub-gear 262 and a second main gear 252; the blades 22 are arranged on the periphery of the hub 21 at intervals around the axis of the hub 21, and the output shaft of the second main motor 232 is coaxially connected with the hub 21; the outer periphery of the second main motor 232 is rotatably connected to the frame 28 through a second rotating shaft 235, the second rotating shaft 235 is disposed along the radial direction of the second main motor 232, a second sub-gear 262 is disposed on the second rotating shaft 235, a second sub-motor 242 is disposed on the frame 28, a second main gear 252 is disposed on an output shaft of the second sub-motor 242, and the second sub-motor 242 is configured to drive the second main gear 252 to mesh with the second sub-gear 262, so that the hub 21 rotates around the second rotating shaft 235 to adjust the swing angle range of the fan 2.

Please refer to embodiment 2 for a detailed description of the outdoor unit of an air conditioner and the fan 2 therein. In addition, when the air-conditioning outdoor unit described in this embodiment that employs the defrosting control method of the foregoing embodiment is used in an air-conditioning unit, the control unit in the air-conditioning unit may control the air-conditioning outdoor unit according to the defrosting control method, so as to achieve the purpose of preventing the outdoor unit from being iced during defrosting in this embodiment.

In the two air-conditioning outdoor units provided by this embodiment, the fan 2 can blow air to the blowing cross section and the lower part of the height position of the outdoor heat exchanger 1 where there is a risk of ice hanging in time by adjusting the air outlet angle range or the air swinging angle range, so as to improve the effect of downward flow of the defrosting water on the outdoor heat exchanger 1, and further effectively prevent the problem of poor defrosting effect caused by ice hanging on the outdoor heat exchanger 1.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the present embodiments and form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (10)

1. A fan for an outdoor unit of an air conditioner, comprising: the fan comprises a hub, a plurality of blades, a first main motor, a first auxiliary motor, a first main gear and a first auxiliary gear;

the blades are arranged on the periphery of the hub at intervals around the axis of the hub, and the output shaft of the first main motor is coaxially connected with the hub;

the blades are rotatably connected to the hub through a first rotating shaft, the first rotating shaft is arranged along the radial direction of the hub, and a first pinion is arranged on the first rotating shaft; the hub is provided with a first auxiliary motor, an output shaft of the first auxiliary motor is provided with a first main gear, and the first auxiliary motor is arranged to drive the first auxiliary gear to be in meshing transmission with the first main gear, so that the blades rotate around the first rotating shaft.

2. The fan as claimed in claim 1, wherein: the fan also comprises a flow guide cover and a frame, wherein one end of the flow guide cover is provided with an air grid, and the other end of the flow guide cover is connected with the frame;

the shell of the first main motor is connected to the frame, and one end, connected with the hub, of the first main motor faces the air grid.

3. The fan as claimed in claim 2, wherein: the fan also comprises a connecting rod and a fixing ring;

the connecting rod is arranged on the shell of the first main motor, and a first connecting hole is formed in the connecting rod;

the fixing ring is provided with a second connecting hole;

the first main motor passes through the fixing ring and a fastener passes through the first connection hole and the second connection hole to connect the connection rod and the fixing ring;

the first main motor is connected to the rack through the fixing ring.

4. The fan as claimed in claim 3, wherein: the frame comprises a fixed plate and an extension arm;

the fixed plate is connected in the outside of kuppe, the extension arm is connected the fixed plate dorsad one side of kuppe, first main motor passes through solid fixed ring connects on the extension arm of frame.

5. The fan as claimed in claim 1, wherein: the hub comprises a shaft sleeve along the axial direction of the hub, and the output shaft of the first main motor extends into the shaft sleeve and is connected with the shaft sleeve.

6. The fan as claimed in claim 5, wherein: at least one side of the output shaft of the first main motor along the length direction of the output shaft is set into a plane;

at least one side of the shaft hole of the shaft sleeve along the length direction of the shaft hole is set to be a plane.

7. An outdoor unit of an air conditioner, comprising an outdoor heat exchanger and the fan of any one of claims 1 to 6;

the outdoor heat exchanger is positioned at the lower part of the fan;

the outdoor heat exchanger comprises a refrigerant pipe and a plurality of fins, the fins are parallel to the axis of the fan and are arranged at intervals, and the refrigerant pipe transversely extends among the fins and is inserted back and forth to form a refrigerant flow path from top to bottom.

8. An outdoor unit of an air conditioner according to claim 7, wherein: and the fins and/or the refrigerant pipe are/is provided with a temperature sensor.

9. An outdoor unit of an air conditioner according to claim 8, wherein: the temperature sensors are multiple;

the plurality of temperature sensors are respectively arranged at each height position of the refrigerant pipe in the transverse direction.

10. An outdoor unit of an air conditioner according to claim 7, wherein: the outdoor unit of the air conditioner further comprises a water receiving disc, and the water receiving disc is arranged on the lower portion of the outdoor heat exchanger.

Images