An indoor unit of an air conditioner

Abstract

The present invention discloses an indoor unit of an air conditioner, which includes a housing, a volute casing and a heat exchanger. The volute casing is fixedly arranged inside the housing. The volute casing has a volute air inlet and a volute air outlet which are oppositely arranged. The heat exchanger is rotatably arranged inside the volute casing. The heat exchanger is a hollow cylindrical structure. When the heat exchanger rotates, gas flows into the internal hollow cavity of the heat exchanger from one side along the radial direction of the heat exchanger through the volute air inlet, and then flows out from the volute air outlet from the other side along the radial direction of the heat exchanger. While realizing the heat exchange function, the heat exchanger itself also functions as a cross-flow fan, integrating the traditional heat exchanger and fan into an integrated structure, which can greatly reduce the overall size of the indoor unit and the occupied space.

Description

Technical Field

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

[0002] A heat pump type air conditioner is a commonly used air conditioner for heating and cooling. When cooling in summer, the air conditioner cools the indoor air and dissipates heat outdoors, while when heating in winter, the direction is opposite to that in summer, that is, heating indoors and cooling outdoors. The air conditioner performs heat exchange between different environments through a heat pump. The air conditioner includes a heat exchange circuit for performing heat exchange between indoors and outdoors to adjust the indoor temperature.

[0003] Figure 1 For the heat exchange principle of the 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. The phase change processes of the refrigerant in the evaporator 1 and the condenser 3 are opposite, and the evaporator 1 and the condenser 3 are collectively referred to as heat exchangers.

[0004] Whether it is the heat exchanger in the indoor unit or the heat exchanger in the outdoor unit, currently, both adopt the structure of a fan + heat exchanger, and an air flow is provided to the heat exchanger through the fan to improve the heat exchange energy efficiency of the heat exchanger. After years of development of the air conditioner, the following several disadvantages of this heat exchanger form (fan + heat exchanger) have become increasingly obvious:

[0005] First, the structure of the fan + heat exchanger occupies more than 95% of the space of the air conditioner (that is, the fan + heat exchanger represents the cabinet size), and the existence of these two restricts the miniaturization process of the air conditioner;

[0006] Second, an additional fan assembly needs to be added, increasing the cost. Summary of the Invention

[0007] In some embodiments of the present application, an indoor unit of an air conditioner is provided. The heat exchanger can rotate. While realizing the heat exchange function, the heat exchanger itself also functions as a fan, equivalent to a cross-flow fan, integrating the traditional heat exchanger and the fan into an integrated structure, which can greatly reduce the overall size of the indoor unit and the occupied space.

[0008] In some embodiments of the present application, after the heat exchanger rotates by itself, the wind speed on the windward side will increase, which helps to improve the heat exchange efficiency of the heat exchanger itself.

[0009] In some embodiments of the present application, an indoor unit of an air conditioner includes: a housing; a volute fixed inside the housing, the volute having a volute air inlet and a volute air outlet disposed opposite to each other; a heat exchanger rotatably disposed inside the volute, the heat exchanger being a hollow cylindrical structure. When the heat exchanger rotates, gas flows from one side along the radial direction of the heat exchanger, enters the internal hollow cavity of the heat exchanger through the volute air inlet, and then flows out from the volute air outlet from the other side along the radial direction of the heat exchanger.

[0010] In some embodiments of the present application, the heat exchanger includes:

[0011] A first flow dividing plate having a first cavity for refrigerant flow and a first refrigerant port communicating with the first cavity;

[0012] A second flow dividing plate having a second cavity for refrigerant flow and a second refrigerant port communicating with the second cavity;

[0013] A plurality of heat exchange tubes are arranged along the circumferential direction of the first flow dividing plate and the second flow dividing plate. The plurality of heat exchange tubes are spaced apart and annularly arranged between the first flow dividing plate and the second flow dividing plate. One end of each heat exchange tube communicates with the first cavity, and the other end communicates with the second cavity. A gap is formed between adjacent two heat exchange tubes;

[0014] A driving part is connected to the first flow dividing plate and drives the first flow dividing plate to rotate;

[0015] When the heat exchanger rotates, gas flows into the hollow cavity from one side along the radial direction of the heat exchanger through the gap, and then flows out from the other side along the radial direction of the heat exchanger through the gap.

[0016] In some embodiments of the present application, the heat exchange tubes are microchannel heat exchange flat tubes.

[0017] In some embodiments of the present application, a reinforcing tube is provided between the first flow dividing plate and the second flow dividing plate.

[0018] In some embodiments of the present application, the driving part is a motor. The motor includes a motor stator and a motor rotor. The motor rotor is fixedly connected to the first flow dividing plate. A first refrigerant through hole for a refrigerant pipe to penetrate is provided inside the motor rotor. The first refrigerant through hole is opposite to the first refrigerant port, and the refrigerant pipe penetrates through the first refrigerant through hole and the first refrigerant port.

[0019] In some embodiments of the present application, a sealing bearing is provided in the first refrigerant port.

[0020] In some embodiments of the present application, the second flow dividing plate includes a first plate body and a second plate body which are fixedly connected. The heat exchange tube is connected to the first plate body, and the second refrigerant port is provided on the second plate body.

[0021] On the second plate body, a plurality of partition ribs are arranged at intervals in a ring shape along the radial direction with the second refrigerant port as the center. A refrigerant flow channel is formed between two adjacent partition ribs, and the inner wall of the first plate body abuts against the top surface of the partition ribs.

[0022] In some embodiments of the present application, multiple heat exchange tubes are arranged in one-to-one correspondence with multiple refrigerant flow channels.

[0023] In some embodiments of the present application, a sealing sleeve is provided at the second refrigerant port.

[0024] In some embodiments of the present application, the cross-sectional shape of the heat exchange tube is square, trapezoidal, or streamlined. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 is a schematic diagram of the heat exchange circuit of the prior art;

[0027] Figure 2 is a schematic structural diagram of the heat exchanger according to the embodiment;

[0028] Figure 3 is Figure 2 a schematic structural diagram observed from the Q direction;

[0029] Figure 4 is a cross-sectional view of the heat exchanger according to the embodiment;

[0030] Figure 5 is Figure 4 an enlarged view of part A in

[0031] Figure 6 is Figure 4 an enlarged view of part B in

[0032] Figure 7 is an exploded view of the second flow dividing plate in the heat exchanger according to the embodiment.

[0033] Reference numerals:

[0034] Figure 1In the figure: 1 - evaporator, 2 - compressor, 3 - condenser, 4 - expansion valve, 5 - four-way reversing valve;

[0035] Figures 2 to 7 In the figure:

[0036] 10 - heat exchanger;

[0037] 100 - first flow - dividing plate, 110 - first cavity, 120 - first refrigerant port;

[0038] 200 - second flow - dividing plate, 210 - second cavity, 220 - second refrigerant port, 230 - first disk body, 231 - flat - tube socket, 240 - second disk body, 241 - separating rib, 242 - refrigerant flow channel, 243 - flow - buffering area;

[0039] 300 - heat - exchange tube, 310 - gap;

[0040] 400 - driving part, 410 - motor, 411 - motor stator, 412 - motor rotor, 413 - refrigerant through - hole;

[0041] 500 - refrigerant pipe;

[0042] 600 - sealed bearing;

[0043] 700 - sealed sleeve. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0045] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0046] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0047] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0048] [Basic operating principle of air conditioner]

[0049] In the present application, the air conditioner performs a refrigeration cycle by using a compressor 2, a condenser 3, an expansion valve 4, and an evaporator 1, referring to Figure 1 . The refrigeration cycle includes a series of processes, involving compression, condensation, expansion, and evaporation, and supplying refrigerant to the air that has been conditioned and heat-exchanged.

[0050] The compressor 2 compresses the 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.

[0051] 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 refrigeration effect by using the latent heat of evaporation of the refrigerant to perform heat exchange with the material to be cooled. Throughout the cycle, the air conditioner can adjust the temperature of the indoor space.

[0052] The outdoor unit of the air conditioner refers to the part of the refrigeration cycle including the compressor and the outdoor heat exchanger. The indoor unit of the air conditioner includes an indoor heat exchanger, and the expansion valve 4 can be provided in the indoor unit or the outdoor unit.

[0053] The indoor heat exchanger and the outdoor heat exchanger are used as condensers or evaporators. When the indoor heat exchanger is used as the condenser 3, the air conditioner serves as a heater in the heating mode. When the indoor heat exchanger is used as the evaporator 1, the air conditioner serves as a cooler in the cooling mode.

[0054] [Air conditioner indoor unit]

[0055] According to the air conditioner indoor unit in some embodiments of the present application, the indoor unit is connected to the outdoor unit installed in the outdoor space through a pipeline.

[0056] The outdoor unit may be provided with a compressor, an outdoor heat exchanger, an outdoor fan, an expander, and similar components of the refrigeration cycle.

[0057] The indoor unit may be a wall-mounted indoor unit installed on the wall of the indoor space, or a cabinet-type indoor unit placed on the floor of the indoor space.

[0058] The indoor unit includes a housing, and a volute (not shown) is fixedly provided inside the housing. The volute has a volute air inlet and a volute air outlet arranged opposite to each other. A heat exchanger 10 is rotatably provided inside the volute.

[0059] In some embodiments according to the present application, referring to Figure 2 and Figure 3 , the heat exchanger 10 is a hollow cylindrical structure. When the heat exchanger 10 rotates, gas flows into the internal hollow cavity of the heat exchanger 10 from one side along the radial direction of the heat exchanger 10 through the volute air inlet, and then flows out from the other side along the radial direction of the heat exchanger 10 through the volute air outlet.

[0060] While realizing the heat exchange function, the heat exchanger 10 itself also functions as a fan, equivalent to a cross-flow fan, integrating the traditional heat exchanger and fan into an integrated structure, which can greatly reduce the overall size of the indoor unit and the occupied space.

[0061] After the heat exchanger 10 rotates by itself, the wind speed on the windward side will increase, which helps to improve the heat exchange efficiency of the heat exchanger 10 itself.

[0062] After the tangential speed (wind speed on the front) of the heat exchanger 10 increases, the heat transfer coefficient increases, which can reduce the air volume, and thus helps to reduce the noise.

[0063] [Heat exchanger]

[0064] Referring to Figures 2 to 6 , the heat exchanger 10 includes a first flow dividing plate 100, a second flow dividing plate 200, heat exchange tubes 300, and a driving part 400.

[0065] Referring to Figure 5 , the first flow dividing plate 100 has a first cavity 110 for refrigerant flow and a first refrigerant port 120 communicating with the first cavity 110. The refrigerant pipe 500 is inserted into the first refrigerant port 120 and communicates with the first cavity 110 to enable the refrigerant to flow into / flow out of the first cavity 110.

[0066] Referring to Figure 6 , the second flow dividing plate 200 has a second cavity 210 for refrigerant flow and a second refrigerant port 220 communicating with the second cavity 210. The refrigerant pipe 500 is inserted into the second refrigerant port 220 and communicates with the first cavity 210 to enable the refrigerant to flow into / flow out of the second cavity 210.

[0067] Reference Figure 2 There are multiple heat exchange tubes 300. Along the circumferential direction of the first flow dividing disk 100 and the second flow dividing disk 200, the multiple heat exchange tubes 300 are arranged in a spaced-apart and annular manner between the first flow dividing disk 100 and the second flow dividing disk 200. One end of each heat exchange tube 300 communicates with the first cavity 110, and the other end communicates with the second cavity 210. A gap 310 is formed between adjacent two heat exchange tubes 300, and this gap 310 is used for gas flow.

[0068] Taking the direction of the refrigerant flowing from the first flow dividing disk 100 to the second flow dividing disk 200 as an example, the refrigerant flows into the first cavity 110 through the refrigerant pipe, then is divided and flows into different heat exchange tubes 300, and then converges in the second cavity 210, and then flows out through the refrigerant pipe 500 provided at the second refrigerant through-port 220.

[0069] When the refrigerant undergoes a phase change while flowing through the heat exchange tube 300, due to the rotation of the heat exchanger 10 itself, the air flow flowing through the heat exchanger 10 blows away the heat / cold generated by the phase change of the refrigerant, improving the heat exchange efficiency of the heat exchanger 10.

[0070] [Heat exchanger rotation]

[0071] In some embodiments of the present application, the rotation of the heat exchanger 10 is realized by the driving part 400. Specifically, the driving part 400 is connected to the first flow dividing disk 100 and drives the first flow dividing disk 100 to rotate, thereby driving the entire heat exchanger 10 to rotate, playing the role of a cross-flow fan.

[0072] When the driving part 400 starts, the heat exchanger 10 rotates. The gas flows into the hollow cavity from the gap 310 between two heat exchange tubes 300 along the radial direction of the heat exchanger 10 from one side, and then flows out from the gap 310 between two heat exchange tubes 300 along the radial direction of the heat exchanger 10 from the other side.

[0073] [Heat exchange tube]

[0074] In some embodiments of the present application, the heat exchange tube 300 is a micro-channel heat exchange flat tube, which has high heat exchange efficiency, and the micro-channel heat exchange flat tube replaces the fins of the cross-flow fan.

[0075] In some embodiments of the present application, the heat exchange tubes 300 form multiple circles (such as 1 - 10 circles) along the circumferential direction of the first flow dividing disk 100 and the second flow dividing disk 200 to meet the heat exchange requirements of the indoor unit.

[0076] In some embodiments of the present application, the cross-sectional shape of the heat exchange tube 300 is square, or trapezoidal, or streamlined, so as to increase the air volume and reduce the noise.

[0077] In some embodiments of the present application, the connection between the end of the heat exchange tube 300 and the first flow dividing plate 100 and the second flow dividing plate 200 adopts a connection method of necking and insertion. The flat tube sockets 231 are respectively provided on the first flow dividing plate 100 and the second flow dividing plate 200, and the microchannel heat exchange flat tube is inserted into the flat tube socket 231.

[0078] In some embodiments of the present application, a hydrophilic, hydrophobic or anti-corrosion coating is provided on the surface of the heat exchange tube 300 to improve the reliability and service life of the heat exchange tube 300.

[0079] In some embodiments of the present application, the surface of the heat exchange tube 300 is dimpled or roughened to increase the contact area between the heat exchange tube 300 and the air flow and improve the heat exchange efficiency.

[0080] [Reinforcing tube]

[0081] In some embodiments of the present application, a reinforcing tube (not shown) is provided between the first flow dividing plate 100 and the second flow dividing plate 200 to enhance the overall strength of the heat exchanger 10.

[0082] In some embodiments of the present application, the reinforcing tube is arranged in a ring along the circumferential direction of the first flow dividing plate 100 and the second flow dividing plate 200, and a plurality of reinforcing tubes and the heat exchange tube 300 together act as the fins of the cross-flow fan.

[0083] [Drive part]

[0084] Referring to Figure 5 , in some embodiments of the present application, the drive part 400 is a motor 410. The motor 410 includes a motor stator 411 and a motor rotor 412. The motor rotor 412 is fixedly connected to the first flow dividing plate 100. When the motor 410 is started, the motor rotor 412 rotates, driving the first flow dividing plate 100 to rotate, thereby realizing the rotation of the entire heat exchanger 10.

[0085] A first refrigerant through hole 413 for the refrigerant tube 500 to pass through is provided in the motor rotor 412. The first refrigerant through hole 413 is directly opposite to the first refrigerant port 120. The refrigerant tube 500 passes through the first refrigerant through hole 413 and the first refrigerant port 120 to realize the refrigerant flow between the refrigerant tube 500 and the first flow dividing plate 100.

[0086] [First flow dividing plate]

[0087] Referring to Figure 2 and Figure 5 , in some embodiments of the present application, the first flow dividing plate 100 is a hollow disc-shaped structure. A first cavity 110 is formed inside the first flow dividing plate 100. The motor 410 and the heat exchange tube 300 are respectively arranged on both sides of the first flow dividing plate 100.

[0088] The side of the first flow dividing plate 100 is the gaseous refrigerant side. When the gaseous refrigerant flows through the first flow dividing plate 100, there is no need to divide the gaseous refrigerant, so the first cavity 110 can be set as a whole hollow cavity.

[0089] [Second flow dividing plate]

[0090] Referring to Figure 3 、 Figure 6 and Figure 7 According to some embodiments of the present application, the second flow dividing plate 200 is a disc-shaped structure, which includes a first disc body 230 and a second disc body 240 fixedly connected. The heat exchange tube 300 is fixedly inserted into the first disc body 230. A second refrigerant port 220 is provided on the second disc body 240. The external refrigerant tube 500 passes through the second refrigerant port 220 and communicates with the second cavity 210 to realize the refrigerant flow between the second flow dividing plate 200 and the refrigerant tube 500.

[0091] On the second disc body 240, a plurality of partition ribs 241 are annularly arranged at intervals along the radial direction with the second refrigerant port 220 as the center. A refrigerant flow channel 242 is formed between two adjacent partition ribs 241. After the first disc body 230 and the second disc body 240 are fixedly connected, the inner wall of the first disc body 230 abuts and seals against the top surface of the partition rib 241, and the refrigerant flows between the refrigerant flow channel 242 and the second refrigerant port 220.

[0092] The side of the second flow dividing plate 200 is the liquid refrigerant side. When the liquid refrigerant flows through the second flow dividing plate 200, the liquid refrigerant is divided through the refrigerant flow channel 242 to ensure the uniformity of the refrigerant in different heat exchange tubes 300.

[0093] Referring to Figure 7 The refrigerant flow channel 242 is a fan-shaped groove structure formed on the second disc body 240. A plurality of refrigerant flow channels 242 are distributed in a spoke shape along the circumferential direction of the second flow dividing plate 200. The refrigerant flow channel 242 is formed by stamping with a mold. When the refrigerant enters the second cavity 210, the refrigerant always first flows into the refrigerant flow channel 242 located on the lower side, and the refrigerant flow channel 242 on the upper side obtains less refrigerant. In the stationary state, the refrigerant flow channel 242 on the upper side hardly obtains any refrigerant. When the heat exchanger 10 rotates, the refrigerant at a high position will automatically fall (at this time, the centrifugal force is ineffective) to improve the uniformity of the refrigerant in different refrigerant flow channels 242.

[0094] According to some embodiments of the present application, a plurality of heat exchange tubes 300 are in one-to-one correspondence with a plurality of refrigerant flow channels 242 to facilitate the smooth flow of the refrigerant between the refrigerant flow channel 242 and the heat exchange tube 300.

[0095] In some embodiments of the present application, with reference to the reference body 7, the region enclosed by the ends of the plurality of partition ribs 241 is referred to as the flow-slowing region 243, and the diameter of the flow-slowing region 243 is greater than the diameter of the second refrigerant port 220. The flow-slowing region 243 can prevent the refrigerant from becoming blocked when accumulating or diverging there, and improve the smoothness of the refrigerant flow.

[0096] The second cavity 210 is actually a cavity formed by a plurality of refrigerant flow channels 242 and the flow-slowing region 243.

[0097] [Sealing]

[0098] In some embodiments of the present application, with reference to Figure 5 , a sealing bearing 600 is provided at the first refrigerant port 120, and the sealing bearing 600 needs to be sealed to prevent the refrigerant in the first cavity 100 from leaking out through the first refrigerant port 120.

[0099] In some embodiments of the present application, with reference to Figure 6 , a sealing sleeve 700 is provided at the second refrigerant port 220 to prevent the refrigerant in the second cavity 210 from leaking out through the second refrigerant port 220.

[0100] The seals at the sealing bearing 600 and the sealing sleeve 700 can adopt sealing forms such as mechanical seals and pneumatic seals.

[0101] [Water droplet splash prevention]

[0102] When the heat exchanger 10 in the indoor unit rotates, the condensate formed outside the heat exchange tube 300 may be thrown out as the heat exchanger 10 rotates. Therefore, in some embodiments of the present application, a protective structure is added around the heat exchanger 10, and a water blocking net is added on the air outlet side of the indoor unit to complete the water droplet interception work.

[0103] The water receiving tray of the indoor unit needs to be larger than the range of the heat exchanger to smoothly complete the functions of receiving and draining water.

[0104] According to the first inventive concept, the heat exchanger 10 provided in the housing can rotate. While realizing the heat exchange function, the heat exchanger 10 itself also acts as a fan, equivalent to a cross-flow fan, integrating the traditional heat exchanger and fan into an integrated structure, which can greatly reduce the overall size of the indoor unit and the occupied space.

[0105] According to the second inventive concept, the wind speed on the windward side of the heat exchanger 10 will increase after its own rotation, which helps to improve the heat exchange efficiency of the heat exchanger 10 itself.

[0106] According to the third inventive concept, the communication between the refrigerant in the heat exchange tube 300 and the external refrigerant tube 500 is realized through the first flow dividing plate 100 and the second flow dividing plate 200. A refrigerant flow channel 243 is provided in the second flow dividing plate 200 on the liquid refrigerant side to divide the liquid refrigerant, ensuring the uniformity of the refrigerant in different heat exchange tubes 300, thereby improving the uniformity of the air outlet temperature of the indoor unit.

[0107] According to the fourth inventive concept, according to the heat exchange requirements of the indoor unit of the air conditioner, multiple turns of the heat exchange tube 300 can be provided between the first flow dividing plate 100 and the second flow dividing plate 200, without causing too large a change in the size of the heat exchanger 10 and not affecting the overall size of the indoor unit.

[0108] In the description of the above embodiments, the specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0109] The above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An indoor unit of an air conditioner, characterized in that, Comprising: A housing; A volute, fixedly arranged inside the housing, the volute having a volute air inlet and a volute air outlet arranged oppositely; A heat exchanger, rotatably arranged inside the volute, the heat exchanger being a hollow cylindrical structure. When the heat exchanger rotates, gas flows into the internal hollow cavity of the heat exchanger from one side along the radial direction of the heat exchanger through the volute air inlet, and then flows out from the volute air outlet from the other side along the radial direction of the heat exchanger; The heat exchanger includes: A first flow dividing disk, which has a first cavity for refrigerant circulation and a first refrigerant port communicating with the first cavity; A second flow dividing disk, which has a second cavity for refrigerant circulation and a second refrigerant port communicating with the second cavity; Heat exchange tubes, having multiple ones, arranged at intervals in a circumferential direction around the first flow dividing disk and the second flow dividing disk between the first flow dividing disk and the second flow dividing disk. One end of each heat exchange tube communicates with the first cavity, and the other end communicates with the second cavity. A gap is formed between adjacent two heat exchange tubes; When the heat exchanger rotates, gas flows into the hollow cavity from one side along the radial direction of the heat exchanger through the gap and then flows out from the other side along the radial direction of the heat exchanger through the gap; The second flow dividing disk includes a first disk body and a second disk body fixedly connected. The heat exchange tubes are connected to the first disk body, and the second refrigerant port is arranged on the second disk body; On the second disk body, a plurality of partition ribs are arranged at intervals in a circumferential direction around the second refrigerant port along its radial direction. A refrigerant flow path is formed between adjacent two partition ribs, and the inner wall of the first disk body abuts against the top surface of the partition ribs; 2. The indoor unit of the air conditioner according to claim 1, characterized in that , A driving part, connected to the first flow dividing disk and driving the first flow dividing disk to rotate; 3. The indoor unit of the air conditioner according to claim 1, characterized in that , The multiple heat exchange tubes are in one-to-one correspondence with the multiple refrigerant flow paths; 4. The indoor unit of an air conditioner according to claim 2, characterized in that , The driving part is a motor. The motor includes a motor stator and a motor rotor. The motor rotor is fixedly connected to the first flow dividing disk. A first refrigerant through hole for a refrigerant pipe to penetrate is arranged inside the motor rotor. The first refrigerant through hole is aligned with the first refrigerant port, and the refrigerant pipe penetrates through the first refrigerant through hole and the first refrigerant port; 5. The indoor unit of an air conditioner according to claim 4, wherein , A sealing bearing is arranged inside the first refrigerant port; 6. The indoor unit of the air conditioner according to claim 1, characterized in that , A sealing sleeve is arranged at the second refrigerant port; 7. The indoor unit of an air conditioner according to any one of claims 1 to 6, characterized in that , The heat exchange tubes are micro-channel heat exchange flat tubes; 8. The indoor air conditioner according to any one of claims 1 to 6, characterized in that , The cross-sectional shape of the heat exchange tubes is square, or trapezoidal, or streamlined; 9. The indoor air conditioner according to any one of claims 1 to 6, characterized in that , A reinforcing tube is arranged between the first flow dividing disk and the second flow dividing disk.

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