CN113446671A - Outdoor unit of air conditioner - Google Patents

Abstract

The invention discloses an outdoor unit of an air conditioner, which comprises a shell, wherein a volute is fixedly arranged in the shell, the volute is provided with a volute air inlet and a volute air outlet, a heat exchanger is rotationally arranged in the volute, the heat exchanger is of a hollow cylindrical structure, and when the heat exchanger rotates, gas flows into an inner hollow cavity of the heat exchanger through the volute air inlet along the axial direction of the heat exchanger and then flows out of the volute air outlet along the radial direction of the heat exchanger. The heat exchanger still plays centrifugal fan's effect itself when realizing the heat exchange function, with traditional heat exchanger and fan integrated structure as an organic whole, but the whole quick-witted size of greatly reduced off-premises station, reduction occupation space.

Description

Outdoor unit of air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to an outdoor unit of an air conditioner.

Background

A heat pump type air conditioner is a type of cooling and heating air conditioner that is often used. When cooling in summer, the air conditioner cools indoors and radiates heat outdoors, and when heating in winter, the direction is opposite to that in summer, namely, the air conditioner heats indoors and cools outdoors. The air conditioner exchanges heat and cold between different environments through a heat pump. The air conditioner comprises a heat exchange loop for exchanging indoor and outdoor heat so as to realize the regulation of the air conditioner on the indoor temperature.

Fig. 1 illustrates a heat exchange principle of a heat exchange circuit in the prior art, that is, the heat exchange circuit includes an evaporator 1, a compressor 2, a condenser 3, an expansion valve 4, and a four-way reversing valve 5, phase change processes of refrigerants in the evaporator 1 and the condenser 3 are opposite, and the evaporator 1 and the condenser 3 are collectively referred to as a heat exchanger.

No matter the heat exchanger in the indoor unit or the heat exchanger in the outdoor unit, the structure of a fan and the heat exchanger is adopted at present, and air flow is provided for the heat exchanger through the fan so as to improve the heat exchange energy efficiency of the heat exchanger. Through the development of air conditioners for many years, the following disadvantages of this heat exchanger type (fan + heat exchanger) become more and more evident:

firstly, the structure of the fan and the heat exchanger occupies more than 95% of the space of the air conditioner (namely, the fan and the heat exchanger represent the size of a frame), and the miniaturization process of the air conditioner is limited by the existence of the fan and the heat exchanger;

secondly, the limit wind speed of the outdoor heat exchanger with the structure is about 3 m/s, the fin spacing is small (< 1.8 mm), frosting is easy to occur, and the heating comfort of a user is reduced (the defrosting is required to be stopped);

and thirdly, a fan assembly needs to be additionally added, so that the cost is increased.

Disclosure of Invention

In some embodiments of this application, an outdoor machine of air-conditioner is provided, and the heat exchanger can rotate, and when the heat exchanger realized the heat exchange function, its self still played the effect of fan, is equivalent to centrifugal fan, with traditional heat exchanger and fan integrated structure, but the whole quick-witted size of greatly reduced off-premises station, reduction occupation space.

In some embodiments of the present application, there is provided an outdoor unit of an air conditioner, including: a housing; the volute is fixedly arranged in the shell and provided with a volute air inlet and a volute air outlet; the heat exchanger is rotatably arranged in the volute and is of a hollow cylindrical structure, and when the heat exchanger rotates, gas flows into the inner hollow cavity of the heat exchanger through the volute air inlet along the axial direction of the heat exchanger and then flows out of the volute air outlet along the radial direction of the heat exchanger.

In some embodiments of the present application, the heat exchanger comprises:

the two shunting disks are oppositely arranged, the shunting disks are opposite to the volute air inlet, each shunting disk is provided with a refrigerant channel and a refrigerant port communicated with the refrigerant channel, the refrigerant port is used for an external refrigerant pipe to penetrate, and the shunting disks are provided with openings for gas to flow;

the heat exchange tubes are provided with a plurality of heat exchange tubes, the heat exchange tubes are arranged between the two shunting disks in a spaced ring mode along the circumferential direction of the shunting disks, and two ends of each heat exchange tube are respectively communicated with the corresponding refrigerant channels;

the driving part is connected with one of the diverter trays and drives the diverter trays to rotate;

when the heat exchanger rotates, gas flows into a hollow cavity defined by the heat exchange tubes through the opening and flows out through a gap between every two adjacent heat exchange tubes.

In some embodiments of the present application, the heat exchange tube is a microchannel heat exchange flat tube.

In some embodiments of the present application, a reinforcing pipe is disposed between the two splitter disks.

In some embodiments of the present application, the driving portion is a motor, the motor includes a motor stator and a motor rotor, the motor rotor is fixedly connected to one of the split-flow trays, a refrigerant through hole for a refrigerant pipe to penetrate is provided in the motor rotor, the refrigerant through hole is aligned with the corresponding refrigerant through hole, and the refrigerant pipe is arranged through the refrigerant through hole and the refrigerant through hole.

In some embodiments of the present application, a sealing bearing is disposed at the refrigerant passage close to the motor.

In some embodiments of the present application, the refrigerant channel includes a refrigerant circumferential channel and a plurality of refrigerant radial channels, the refrigerant circumferential channel is disposed at the periphery of the distribution plate, the refrigerant radial channels are spaced along the radial direction of the distribution plate with the refrigerant port as the center, and the refrigerant radial channels are communicated with the refrigerant circumferential channel; the opening is formed between every two adjacent refrigerant radial channels.

In some embodiments of the present application, an end portion of the heat exchange tube is communicated with the refrigerant circumferential channel.

In some embodiments of the present application, a sealing sleeve is disposed at the refrigerant passage far away from the driving portion.

In some embodiments of the present application, the heat exchange tube has a square, trapezoidal, or streamlined cross-sectional shape.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a heat exchange circuit of a prior art air conditioner;

fig. 2 is a schematic view illustrating a heat exchanger and a scroll of an outdoor unit for an air conditioner according to an embodiment;

fig. 3 is a schematic view illustrating a heat exchanger of an outdoor unit for an air conditioner according to an embodiment;

FIG. 4 is a schematic view of the structure of FIG. 3 viewed from the direction Q;

fig. 5 is a sectional view of a heat exchanger in an outdoor unit for an air conditioner according to an embodiment;

FIG. 6 is an enlarged view of portion A of FIG. 5;

FIG. 7 is an enlarged view of portion B of FIG. 5;

fig. 8 is a schematic structural view illustrating a diverter tray of a heat exchanger in an outdoor unit for an air conditioner according to an embodiment;

fig. 9 is an exploded view of a diverter tray of a heat exchanger in an outdoor unit of an air conditioner according to an embodiment;

FIG. 10 is a schematic view of the structure of FIG. 9 as viewed from the direction P;

fig. 11 is an enlarged view of fig. 10 at C.

Reference numerals:

in fig. 1: 1-evaporator, 2-compressor, 3-condenser, 4-expansion valve, 5-four-way reversing valve;

in fig. 2 to 11:

10-a heat exchanger;

20-volute, 21-volute air inlet, 22-volute air outlet;

100-flow distribution disc, 110-refrigerant channel, 111-refrigerant radial channel, 112-refrigerant circumferential channel, 120-opening, 130-first disc body, 131-first central plate, 132-first outer peripheral plate, 133-first radial rib, 134-first opening, 140-second disc body, 141-second central plate, 142-second outer peripheral plate, 143-second radial rib, 144-second opening, 150-refrigerant port, 160-slow flow area, 170-flat pipe socket;

200-heat exchange tube, 210-gap;

300-a driving part, 310-a motor, 311-a motor stator, 312-a motor rotor, 313-a refrigerant through hole;

400-refrigerant pipe;

500-sealing the bearing;

600-sealing the sleeve.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 application can be understood in a specific case by those of ordinary skill in the art.

[ basic operation principle of air conditioner ]

The air conditioner in the present application performs a refrigeration cycle of the air conditioner by using a compressor 2, a condenser 3, an expansion valve 4, and an evaporator 1, referring to fig. 1. 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.

The compressor 2 compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser 3. The condenser 3 condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve 4 expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser 3 into a low-pressure liquid-phase refrigerant. The evaporator 1 evaporates the refrigerant expanded in the expansion valve 4, and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor 2. The evaporator 1 can achieve a refrigerating effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as the condenser 3, 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.

[ outdoor unit of air conditioner ]

According to the outdoor unit of an air conditioner in some embodiments of the present application, the outdoor unit is connected to an indoor unit installed in an indoor space through a pipe.

The indoor unit can be a wall-mounted indoor unit arranged on the wall of the indoor space or a cabinet-type indoor unit arranged on the ground of the indoor space.

Referring to fig. 2, the outdoor unit includes a casing (not shown) in which a scroll casing 20 having a scroll casing inlet 21 and a scroll casing outlet 22 is fixedly installed.

According to some embodiments of the present application, the heat exchanger 10 is rotatably disposed in the volute 20, the heat exchanger 10 is a hollow cylindrical structure, and when the heat exchanger 10 rotates, the gas flows into the hollow cavity inside the heat exchanger 10 through the volute air inlet 21 along the axial direction of the heat exchanger 10, and then flows out from the volute air outlet 22 along the radial direction of the heat exchanger 10.

The heat exchanger 10 has a function of a fan while realizing a heat exchange function, and is equivalent to a centrifugal fan, and the conventional heat exchanger and the fan are integrated into a whole, so that the overall size of the outdoor unit can be greatly reduced, and the occupied space can be reduced.

The wind speed on the windward side of the heat exchanger 10 after rotating is increased, which is helpful for improving the heat exchange efficiency of the heat exchanger 10.

When the tangential velocity (head-on wind velocity) of the heat exchanger 10 is increased, the heat exchange coefficient is increased to reduce the air volume, which contributes to noise reduction.

The heat exchanger 10 has a strong centrifugal force when rotating as a centrifugal fan, which can accelerate the discharge speed of condensed water and increase the defrosting speed.

[ Heat exchanger ]

Referring to fig. 3 to 7, the heat exchanger includes a diverter tray 100, a heat exchange pipe 200, and a driving part 300.

The two flow distribution discs 100 are arranged oppositely, each flow distribution disc 100 is opposite to the corresponding volute air inlet 21, each flow distribution disc 100 is provided with a refrigerant channel 110 and a refrigerant port 150 communicated with the refrigerant channel 110, and an external refrigerant pipe 400 penetrates into the refrigerant port 150 and is communicated with the refrigerant channel 110, so that the refrigerant circulation between the flow distribution discs 100 and the external refrigerant pipe 400 is realized.

The diverter tray 100 is provided with an opening 120 for the gas to flow through, and when the heat exchanger 10 rotates, the gas flows into the hollow cavity inside the heat exchanger 10 through the opening 120.

The heat exchange tubes 200 are provided with a plurality of heat exchange tubes 200, the plurality of heat exchange tubes 200 are arranged between the two flow distribution discs 100 at intervals along the circumferential direction of the flow distribution discs 100, and two ends of each heat exchange tube 200 are respectively communicated with the corresponding refrigerant channels 110, so that the refrigerant circulation between the flow distribution discs 100 and the heat exchange tubes 200 is realized. A gap 210 is formed between two adjacent heat exchange tubes 200, and the gap 210 is used for gas circulation.

The refrigerant flows into one of the distribution trays 100 through the refrigerant pipe 400, flows into different heat exchange pipes 200 through the refrigerant channels 110 in the distribution tray 100, is collected in the other distribution tray 100, and then flows out through the refrigerant pipe 400 on the other side.

When the refrigerant is phase-changed by passing through the heat exchange tube 200, the heat/cold generated by the phase change of the refrigerant is blown away by the airflow passing through the heat exchanger 10 due to the rotation of the heat exchanger 10, thereby improving the heat exchange efficiency of the heat exchanger 10.

[ rotation of Heat exchanger ]

According to some embodiments of the present application, the rotation of the heat exchanger 10 is achieved by the driving portion 400, and specifically, the driving portion 400 is connected to one of the diverter trays 100 and drives the diverter tray 100 to rotate, so as to drive the whole heat exchanger 10 to rotate, thereby functioning as a centrifugal fan.

The driving part 300 is started, the heat exchanger 10 rotates, and the gas flows into the hollow cavity surrounded by the plurality of heat exchange tubes 200 from the openings 120 on the flow distribution discs 100 on the two sides and flows out through the gap 210 between two adjacent heat exchange tubes 200.

[ Heat exchange tube ]

According to some embodiments of the application, heat exchange tube 200 is microchannel heat transfer flat tube, and the heat transfer efficiency is high, and microchannel heat transfer flat tube replaces centrifugal fan's fin.

According to some embodiments of the present application, the heat exchange pipes 200 are formed in a plurality of turns (for example, 1 to 20 turns) along the circumferential direction of the diverter tray 100 to meet the heat exchange requirement of the outdoor unit.

According to some embodiments of the present application, the cross-sectional shape of the heat exchange pipe 200 is square, trapezoidal, or streamlined to improve the air volume and reduce the noise.

According to some embodiments of the present application, the connection between the end of the heat exchange tube 200 and the diverter tray 100 is a connection manner of necking and inserting, referring to fig. 9, the diverter tray 100 is provided with a flat tube socket 170, and the microchannel heat exchange flat tube is inserted into the flat tube socket 170.

According to some embodiments of the present application, the surface of the heat exchange tube 200 is provided with a hydrophilic, hydrophobic, or anti-corrosion coating, which improves the reliability and the service life of the heat exchange tube 200.

According to some embodiments of the present application, the surface of the heat exchange tube 200 is subjected to pitting or roughening treatment, so that the contact area between the heat exchange tube 200 and the air flow is increased, and the heat exchange energy efficiency is improved.

[ Reinforcement pipe ]

According to some embodiments of the present application, a reinforcing tube (not shown) is disposed between the two opposing split disks 100, and the reinforcing tube is a solid tube to enhance the overall strength of the heat exchanger 10.

According to some embodiments of the present application, a plurality of reinforcing pipes are circumferentially arranged along the circumferential direction of the flow distribution disk 100, and together with the heat exchange pipes 200, serve as fins of the centrifugal fan.

[ Driving part ]

Referring to fig. 6, the driving portion 300 is a motor 310, the motor 310 includes a motor stator 311 and a motor rotor 312, the motor rotor 312 is fixedly connected to one of the diverter trays 100, the motor 310 is started, and the motor rotor 312 rotates to drive the diverter tray 100 on the motor 310 side to rotate, so as to realize rotation of the entire heat exchanger 10.

The motor rotor 312 is provided with a refrigerant through hole 313 for the refrigerant pipe 400 to penetrate through, the refrigerant through hole 313 is opposite to the corresponding refrigerant port 150, and the refrigerant pipe 400 penetrates through the refrigerant through hole 313 and the refrigerant port 150, so that the refrigerant circulation between the refrigerant pipe 400 and the flow distribution plate 100 is realized.

[ shunting plate ]

Referring to fig. 8 to 10, according to some embodiments of the present invention, the diversion tray 100 has a disc-shaped structure, and includes a first tray 130 and a second tray 140 fixedly connected to each other, and the first tray 130 and the second tray 140 are connected to each other to define a refrigerant channel 110 therebetween.

The refrigerant channel 110 includes a refrigerant circumferential channel 112 and a plurality of refrigerant radial channels 111, the refrigerant circumferential channel 112 is located at the periphery of the distribution plate 100, the refrigerant radial channels 111 use the refrigerant port 150 as the center, are arranged at intervals along the radial direction of the distribution plate 100, and are spoke-shaped, and the refrigerant radial channels 111 are communicated with the refrigerant circumferential channel 112.

Specifically, referring to fig. 9, the first disk 130 includes a first central plate 131, a first outer peripheral plate 132, and a first radial rib 133, the first central plate 131 and the first outer peripheral plate 132 are concentric, the first radial rib 133 extends to be connected to the first outer peripheral plate 132 along a radial direction of the first disk 130 with the first central plate 131 as a center, that is, the first radial rib 133 is distributed in a spoke shape with the center of the first disk 130 as a center. Be equipped with flat pipe socket 170 on the first peripheral plate 132, heat exchange tube 200 inserts and locates in flat pipe socket 170, realizes the fixed grafting of heat exchange tube 200 and first disk body 130.

Referring to fig. 10, the second tray body 140 includes a second central plate 141, a second peripheral plate 142, and a second radial rib 143, the second central plate 141 and the second peripheral plate 142 are concentric, the second radial rib 143 extends from the second central plate 141 as a center in a radial direction of the second tray body 140 to be connected to the second peripheral plate 142, that is, the second radial rib 143 is distributed in a spoke shape around the center of the second tray body 140.

A circumferential groove is formed in the second outer peripheral plate 142, a radial groove is formed in the second radial rib 143, after the first tray body 130 and the second tray body 140 are fixedly connected, the first central plate 131 is opposite to the second central plate 141, the first outer peripheral plate 132 is opposite to the second outer peripheral plate 142, the first radial rib 133 is opposite to the second radial rib 143, the circumferential groove and the first tray body 130 define a refrigerant circumferential channel 112 together, the radial groove and the first tray body 130 define a refrigerant radial channel 111 together, the refrigerant radial channel 111 is communicated with the refrigerant circumferential channel 112, and the refrigerant circumferential channel 112 and the refrigerant radial channels 111 form the refrigerant channel 110 together.

According to some embodiments of the present disclosure, the ends of the heat exchange tubes 200 are in communication with the refrigerant circumferential channel 112, which helps to improve the uniformity of the refrigerant flow.

The plurality of refrigerant radial passages 111 are distributed in a spoke shape along the circumferential direction of the distributor 100. When the refrigerant enters the diversion plate 100, the refrigerant always flows into the refrigerant radial channel 111 on the lower side, the refrigerant amount obtained by the refrigerant radial channel 111 on the upper side is small, and the refrigerant is hardly obtained by the refrigerant radial channel 111 on the upper side in a static state. When the heat exchanger 10 rotates, the refrigerant at a high position automatically falls (at this time, the centrifugal force is ineffective), so as to improve the uniformity of the refrigerant in the different refrigerant radial channels 111.

The first openings 134 are formed between two adjacent first radial ribs 133, the second openings 144 are formed between two adjacent second radial ribs 143, and the first openings 134 and the second openings 144 face each other and jointly form the openings 120 for gas circulation.

The second center plate 141 is provided with a refrigerant port 150 through which an external refrigerant pipe 400 is inserted.

According to some embodiments of the present invention, referring to the body 11, a concave slow flow region 160 is formed at the second center plate 141, and a diameter of the slow flow region 160 is larger than a diameter of the refrigerant port 150. The slow flow region 160 can prevent the refrigerant from being blocked by expansion when the refrigerant is collected or distributed at the slow flow region, thereby improving the smoothness of the refrigerant circulation.

The splitter plate 100 is the air inlet side, sets up fretwork form trompil 120 on the splitter plate 100, and the air inlet is convenient for on the one hand, helps reducing heat exchanger 10 weight on the two sides, and the material cost is helped reducing on the three sides.

[ sealing ]

According to some embodiments of the present invention, referring to fig. 6, a sealing bearing 500 is disposed at the refrigerant port 150 near the motor 310, and the sealing bearing 500 needs to be sealed to prevent the refrigerant from leaking through the refrigerant port 150.

According to some embodiments of the present invention, referring to fig. 7, a sealing sleeve 600 is disposed at a position of the refrigerant port 150 far away from the driving portion 300 (i.e., the motor 310) to prevent the refrigerant from leaking through the refrigerant port 150.

The seal at the seal bearing 500 and the seal sleeve 600 may take the form of a mechanical seal, a pneumatic seal, or the like.

[ Water splash prevention ]

When the heat exchanger 10 rotates as a centrifugal fan, the condensation formed outside the heat exchange pipe 200 may be thrown out as the heat exchanger 10 rotates.

When the heat exchanger 10 is horizontally disposed, a water guard is provided at the bottom of the heat exchange pipe 200 to prevent water droplets from splashing.

When the heat exchanger 10 is vertically placed, a water baffle is provided at the bottom of the diverter tray 100 to prevent water droplets from splashing.

According to the first inventive concept, the heat exchanger 10 disposed in the scroll casing 20 can rotate, and the heat exchanger 10 can perform a heat exchange function and also function as a fan, which is equivalent to a centrifugal fan, and integrates a conventional heat exchanger and a fan into a whole, so that the overall size of the outdoor unit can be greatly reduced, and the occupied space can be reduced.

According to the second inventive concept, the wind speed on the windward side of the heat exchanger 10 after rotating itself is increased, which helps to improve the heat exchange efficiency of the heat exchanger 10 itself.

According to the third inventive concept, after the tangential velocity (head-on wind velocity) of the heat exchanger 10 is increased, the heat exchange coefficient is increased to reduce the wind volume, thereby contributing to noise reduction.

According to the fourth inventive concept, the heat exchanger 10 in the outdoor unit has a problem of difficulty in frost formation and drainage, and the heat exchanger 10 has a strong centrifugal force when rotating as a centrifugal fan, thereby increasing the condensed water drainage speed and the defrosting speed.

According to the fifth inventive concept, the heat exchange pipe 200 can be arranged between the two diversion disks 100 for a plurality of turns according to the heat exchange requirement of the outdoor unit of the air conditioner without causing the size of the heat exchanger 10 to be changed too much and affecting the overall size of the outdoor unit.

According to the sixth inventive concept, the refrigerant is communicated between the heat exchange tubes 200 and the external refrigerant tubes 400 by the two distribution plates 100, and is distributed by the refrigerant channels 110, thereby ensuring the uniformity of the refrigerant in different heat exchange tubes 200.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An outdoor unit for an air conditioner, comprising:

a housing;

the volute is fixedly arranged in the shell and provided with a volute air inlet and a volute air outlet;

the heat exchanger is rotatably arranged in the volute and is of a hollow cylindrical structure, and when the heat exchanger rotates, gas flows into the inner hollow cavity of the heat exchanger through the volute air inlet along the axial direction of the heat exchanger and then flows out of the volute air outlet along the radial direction of the heat exchanger.

2. The outdoor unit of claim 1, wherein,

the heat exchanger includes:

the two shunting disks are oppositely arranged, the shunting disks are opposite to the volute air inlet, each shunting disk is provided with a refrigerant channel and a refrigerant port communicated with the refrigerant channel, the refrigerant port is used for an external refrigerant pipe to penetrate, and the shunting disks are provided with openings for gas to flow;

the heat exchange tubes are provided with a plurality of heat exchange tubes, the heat exchange tubes are arranged between the two shunting disks in a spaced ring mode along the circumferential direction of the shunting disks, and two ends of each heat exchange tube are respectively communicated with the corresponding refrigerant channels;

the driving part is connected with one of the diverter trays and drives the diverter trays to rotate;

when the heat exchanger rotates, gas flows into a hollow cavity defined by the heat exchange tubes through the opening and flows out through a gap between every two adjacent heat exchange tubes.

3. The outdoor unit of claim 2, wherein,

the refrigerant channel comprises a refrigerant circumferential channel and a plurality of refrigerant radial channels, the refrigerant circumferential channel is arranged on the periphery of the flow distribution disc, the refrigerant radial channels are arranged at intervals along the radial direction of the flow distribution disc by taking the refrigerant port as the center, and the refrigerant radial channels are communicated with the refrigerant circumferential channel;

the opening is formed between every two adjacent refrigerant radial channels.

4. The outdoor unit of claim 3, wherein,

the end part of the heat exchange tube is communicated with the refrigerant circumferential channel.

5. The outdoor unit of claim 2, wherein,

the driving part is a motor, the motor comprises a motor stator and a motor rotor, the motor rotor is fixedly connected with one of the flow distribution discs, a refrigerant through hole for a refrigerant pipe to penetrate is formed in the motor rotor, the refrigerant through hole is opposite to the corresponding refrigerant through hole, and the refrigerant pipe penetrates through the refrigerant through hole and the refrigerant through hole.

6. The outdoor unit of claim 5, wherein,

and a sealing bearing is arranged at the refrigerant through hole close to the motor.

7. The outdoor unit of claim 2, wherein,

and a sealing sleeve is arranged at the refrigerant through hole far away from the driving part.

8. The outdoor unit of any one of claims 2 to 7, wherein,

the heat exchange tube is a micro-channel heat exchange flat tube.

9. The outdoor unit of any one of claims 2 to 7, wherein,

the cross section of the heat exchange tube is square, trapezoid or streamline.

10. The outdoor unit of any one of claims 2 to 7, wherein,

and a reinforcing pipe is arranged between the two shunting disks.

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