Fresh air conditioner

Abstract

The utility model discloses a fresh air conditioner, which relates to the technical field of air conditioners, and comprises a shell, a fresh air fan, a heat exchange fan and a driving motor, the fresh air fan and the heat exchange fan are arranged in the shell; the driving motor can drive the heat exchange fan and the fresh air fan to rotate independently, and an output shaft of the driving motor is connected to one of the fresh air fan and the heat exchange fan. The outer rotor is connected to the other one of the fresh air fan and the heat exchange fan, and the output shaft and the outer rotor can respectively drive the connected fresh air fan and heat exchange fan to rotate. The fresh air fan and the heat exchange fan of the fresh air conditioner can be respectively driven by the same driving motor, so that independent operation of the fresh air fan and the heat exchange fan is realized, the internal mounting space of the fresh air conditioner can be reduced, and the length of the fresh air conditioner is further shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a fresh air air conditioner. Background Art

[0002] Air conditioning refers to equipment that artificially regulates and controls the temperature, humidity, flow rate, and other parameters of the ambient air within a building or structure. With technological advancements, existing air conditioners can now include a fresh air function, using centrifugal fans to circulate and exchange air between indoor and outdoor air.

[0003] Most existing fresh air air conditioners use a dual-motor design, with separate drive motors driving the heat exchange fan and the fresh air fan. This type of fresh air air conditioner requires space within the housing for not only the heat exchange fan and the fresh air fan, but also for two drive motors. This takes up more housing space, making the air conditioner too long and difficult to install. It also increases material and shipping costs, raising the overall cost of the unit. Utility Model Content

[0004] The purpose of the utility model is to provide a fresh air air conditioner, which solves the problem that the existing fresh air air conditioner has a too long structure and is not conducive to air conditioning installation by making the heat exchange fan and the fresh air fan share the same motor drive.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fresh air air conditioner, comprising:

[0007] case;

[0008] an indoor heat exchanger, disposed in the housing;

[0009] A fresh air fan is provided in the housing and is used to drive outdoor air into the room;

[0010] a heat exchange fan, disposed in the housing, and configured to drive indoor air to flow through the indoor heat exchanger;

[0011] A drive motor capable of driving the heat exchange fan and the fresh air fan to rotate independently, wherein the drive motor comprises:

[0012] an output shaft connected to one of the fresh air fan and the heat exchange fan;

[0013] an inner rotor connected to the outer circumference of the output shaft to drive the output shaft to rotate;

[0014] an outer rotor, disposed on an outer circumference of the inner rotor and connected to the other of the fresh air fan and the heat exchange fan;

[0015] The stator is arranged between the inner rotor and the outer rotor and is fixedly connected to the housing, and

[0016] A first stator winding corresponding to the inner rotor is provided on a side of the stator facing the inner rotor, and the operation of the first stator winding can drive the inner rotor to rotate relative to the stator;

[0017] A second stator winding corresponding to the outer rotor is provided on a side of the stator facing the outer rotor. The operation of the second stator winding can drive the outer rotor to rotate relative to the stator.

[0018] The above technical solution has the following advantages: by inputting three-phase alternating current into the first stator winding, the inner rotor can be driven to rotate relative to the stator, thereby driving the output shaft connected to the inner rotor to rotate, so that the output shaft can drive one of the fresh air fan and the heat exchange fan to rotate, and by inputting three-phase alternating current into the second stator winding, the outer rotor can be driven to rotate relative to the stator, thereby causing the outer rotor to drive the other of the fresh air fan and the heat exchange fan to rotate, so that the fresh air fan and the heat exchange fan can be driven separately by the same drive motor to achieve independent operation, so that the fresh air air conditioner can reduce the internal installation space, thereby shortening the length of the air conditioner.

[0019] In some embodiments, the stator, the inner rotor, and the outer rotor are coaxially arranged around the output shaft with the output shaft as the center axis, and the stator, the inner rotor, and the outer rotor are extended in the same direction along the length of the output shaft, and the extension lengths of the stator, the inner rotor, and the outer rotor are the same.

[0020] The above technical solution has the following advantages: the stator, inner rotor and outer rotor of the drive motor can be arranged together along the length direction of the output shaft, and the extended lengths of the stator, inner rotor and outer rotor are the same, which can greatly compress the axial installation dimensions of the drive motor and further shorten the length of the air conditioner.

[0021] In some embodiments, the inner rotor comprises:

[0022] A plurality of first magnetic bodies are connected to the output shaft, and the plurality of first magnetic bodies are sequentially connected on the outer peripheral side of the output shaft to form an annular structure surrounding the output shaft, and the magnetic poles of two adjacent first magnetic bodies are opposite.

[0023] The above technical solution has the following advantages: multiple first magnetic bodies are arranged around the outer circumference of the output shaft, so that the inner rotor is arranged with the output shaft as the center. In this way, when the first stator winding is energized to generate a magnetic field, driving the inner rotor to rotate, the output shaft can rotate with the inner rotor, and the output shaft will not deviate from its current axial position, thereby compressing the circumferential installation size of the drive motor and controlling the specifications of the air conditioner.

[0024] In some embodiments, the outer rotor comprises:

[0025] A plurality of second magnetic bodies are connected to one of the fresh air fan and the heat exchange fan, and the plurality of second magnetic bodies are sequentially connected on the outer peripheral side of the stator to form an annular structure surrounding the stator, and the magnetic poles of two adjacent second magnetic bodies are opposite; and the plurality of second magnetic bodies and the plurality of first magnetic bodies are coaxially arranged around the output shaft with the output shaft as the center axis.

[0026] The above technical solution has the following advantages: multiple second magnetic bodies are arranged around the outer peripheral side of the stator, so that the outer rotor is arranged with the stator as the center, and the multiple second magnetic bodies and the multiple first magnetic bodies are arranged coaxially around the output shaft. In this way, the inner rotor, stator and outer rotor are arranged in sequence in the circumferential direction of the output shaft, and the inner rotor and the outer rotor rotate with the output shaft as the rotation center. The fresh air fan and the heat exchange fan also rotate with the output shaft as the rotation center, ensuring the coaxiality of the fresh air fan and the heat exchange fan.

[0027] In some embodiments, the stator comprises:

[0028] a stator body, arranged around the inner rotor and fixedly connected to the housing;

[0029] a plurality of first pole shoes, disposed on a side of the stator body facing the inner rotor, the plurality of first pole shoes extending toward the inner rotor and leaving a first air gap between the first pole shoes and the inner rotor; the first stator winding being disposed on the plurality of first pole shoes;

[0030] A plurality of second pole shoes are arranged on a side of the stator body facing the outer rotor, and the plurality of second pole shoes extend toward the outer rotor, with a second air gap left between the second pole shoes and the outer rotor; the second stator winding is arranged on the plurality of second pole shoes.

[0031] The above technical solution has the following advantages: based on the structural layout of the stator, the drive motor can drive the inner rotor and outer rotor to rotate respectively with one stator, thereby compressing the volume of the drive motor, which is beneficial to improving the utilization rate of the internal space of the air conditioner and controlling the specifications and dimensions of the air conditioner.

[0032] In some embodiments, the outer rotor is integrally formed with a housing of one of the fresh air fan and the heat exchange fan.

[0033] The above technical solution has the following advantages: the outer rotor is integrally formed with the shell of one of the fresh air fan and the heat exchange fan, which can ensure the connection strength between the outer rotor and the fresh air fan or the heat exchange fan, save the assembly process of the outer rotor, and improve the overall assembly efficiency of the air conditioner.

[0034] In some embodiments, one of the heat exchange fan and the fresh air fan is provided with a first fixing portion on the side facing the other, and the first fixing portion is provided with a first installation cavity; and the outer rotor, the stator and the inner rotor are jointly built into the first installation cavity, and the outer rotor is connected and fixed to the inner wall of the first installation cavity.

[0035] The above technical solution has the following advantages: the first fixing part can provide structural protection for the outer rotor, stator and inner rotor, and the first mounting cavity can provide a space for connection and fixation of the outer rotor, which facilitates the connection and fixation of the outer rotor with the heat exchange fan or the fresh air fan.

[0036] In some embodiments, the heat exchange fan and the fresh air fan both have a wind wheel, and the first installation cavity is formed on the wind wheel of one of the heat exchange fan and the fresh air fan.

[0037] The above technical solution has the following advantages: the first installation cavity is directly formed on the wind wheel of the heat exchange fan or the fresh air fan, so that the outer rotor can directly drive the wind wheel of the heat exchange fan or the fresh air fan to rotate, which is beneficial to the output transmission of the outer rotor power.

[0038] In some embodiments, the fresh air fan and the heat exchange fan are arranged along the length direction of the shell, and the fresh air fan and the heat exchange fan are arranged coaxially, and one end of the output shaft is connected and fixed to one of the fresh air fan and the heat exchange fan, and the other end of the output shaft is rotatably connected to the other of the fresh air fan and the heat exchange fan.

[0039] The above technical solution has the following advantages: the fresh air fan and the heat exchange fan are arranged along the length direction of the shell, and the fresh air fan and the heat exchange fan are arranged coaxially, which can control the width and height of the air conditioner. Moreover, the coaxially arranged fresh air fan and heat exchange fan can provide positioning and bearing functions for the output shaft, which facilitates the installation and fixation of the output shaft.

[0040] In some embodiments, a first bearing is provided on the heat exchange fan, and the output shaft is passed through the inner ring of the first bearing at one end facing the heat exchange fan; and a second bearing is provided on the housing, and the output shaft is passed through the inner ring of the second bearing at one end facing the fresh air fan and is connected to the fresh air fan.

[0041] The above technical solution has the following advantages: the first bearing can ensure that the output shaft can rotate relative to the heat exchange fan, so that the output shaft can be rotatably connected to the heat exchange fan; the second bearing is arranged on the shell, so that the second bearing plays the role of supporting the output shaft, ensuring that the output shaft can be firmly connected to the shell and can rotate relative to the shell, thereby outputting power to the fresh air fan and driving the fresh air fan to rotate.

[0042] Compared with the prior art, the fresh air air conditioner implemented by the present invention has the following beneficial effects:

[0043] The present fresh air air conditioner is provided with a first stator winding and a second stator winding on the stator, and the first stator winding is provided corresponding to the inner rotor, and the second stator winding is provided corresponding to the outer rotor. In this way, three-phase alternating current is input into the first stator winding, which can drive the inner rotor to rotate relative to the stator, thereby driving the output shaft connected to the inner rotor to rotate, so that the output shaft can drive one of the fresh air fan and the heat exchange fan to rotate. By inputting three-phase alternating current into the second stator winding, the outer rotor can be driven to rotate relative to the stator, thereby causing the outer rotor to drive the other of the fresh air fan and the heat exchange fan to rotate. The first stator winding and the second stator winding are respectively provided on the inner and outer sides of the stator, and the two do not interfere with each other and are independent of each other, so that the fresh air fan and the heat exchange fan can be driven by the same drive motor respectively, and the fresh air fan and the heat exchange fan can operate independently, so that the present fresh air air conditioner can reduce the internal installation space and thus shorten the length of the present fresh air air conditioner.

[0044] In addition, the fresh air air conditioner arranges the inner rotor, outer rotor and stator coaxially, and the drive motor can drive the inner rotor and outer rotor to rotate respectively with one stator, thereby compressing the volume of the drive motor, which is beneficial to improving the utilization rate of the internal space of the air conditioner and controlling the specifications and dimensions of the air conditioner.

[0045] Moreover, the stator, inner rotor and outer rotor of the fresh air air conditioner can be arranged together along the length direction of the output shaft, and the extended lengths of the stator, inner rotor and outer rotor are the same, which can greatly compress the axial installation dimensions of the drive motor and further shorten the length of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a schematic diagram of a fresh air air conditioner in an embodiment of the present application;

[0047] Figure 2This is a schematic diagram of the interior of a fresh air air conditioner in an embodiment of the present application;

[0048] Figure 3 This is a schematic diagram of the connection between the drive motor and the heat exchange fan in the embodiment of the present application;

[0049] Figure 4 yes Figure 3 Cross-sectional view of AA;

[0050] Figure 5 yes Figure 4 Enlarged view of middle B;

[0051] Figure 6 yes Figure 4 Enlarged view of middle C;

[0052] Figure 7 This is a schematic diagram of the connection between the drive motor and the fresh air fan in the embodiment of the present application;

[0053] Figure 8 yes Figure 7 Schematic diagram of the connection between the drive motor and the wind wheel in the example;

[0054] Figure 9 yes Figure 7 Schematic diagram of the drive motor in the example;

[0055] Figure 10 yes Figure 7 Schematic diagram of the wind wheel in the example.

[0056] In the figure, 100, fresh air air conditioner; 1, shell; 2, indoor heat exchanger; 3, fresh air volute; 4, fresh air fan; 5, heat exchange fan; 6, air guide plate; 7, drive motor; 7a, output shaft; 7b, inner rotor; 70b, first magnetic body; 7c, outer rotor; 70c, second magnetic body; 7d, stator; 70d, stator body; 71d, first pole shoe; 72d, second pole shoe; 7e, first stator winding; 7f, second stator winding; 7g, first air gap; 7h, second air gap; 8, indoor air inlet; 9, first bearing; 10, second bearing; 11, wind wheel; 12, end plate; 13, first fixing part; 14, first mounting cavity; 15, mounting through hole. DETAILED DESCRIPTION

[0057] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0058] In the description of this application, it should be understood that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element. The terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, it may be internal communication between two elements or an interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0059] In the description of this application, it should be understood that the terms "height", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. used in this application to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0060] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features.

[0061] In this application, the fresh air air conditioner 100 performs a cooling cycle or a heating cycle using a compressor, a condenser, an expansion valve, and an evaporator. The cooling cycle and the heating cycle involve a series of processes, including compression, condensation, expansion, and evaporation. The refrigerant absorbs or releases heat, providing cooling or heating to the indoor air, thereby regulating the indoor air temperature.

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

[0063] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser to a lower-pressure liquid. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves cooling by utilizing the latent heat of evaporation to exchange heat with the material being cooled. Throughout this cycle, the air conditioner regulates the temperature of the indoor air.

[0064] 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 the indoor heat exchanger 2, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0065] The indoor heat exchanger 2 and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger 2 functions as a condenser, the air conditioner functions as a heater in a heating mode, and when the indoor heat exchanger 2 functions as an evaporator, the air conditioner functions as a cooler in a cooling mode.

[0066] The directions described in this article are based on the direction in which the user is facing the air conditioner. The left and right sides are distinguished by the direction in which the user is facing the air conditioner. The side facing the user when the air conditioner is in use is defined as the front side, and the side opposite to it is defined as the rear side. The upper and lower sides of the air conditioner when it is generally working normally are defined to distinguish up and down.

[0067] Reference below Figure 1-10 The fresh air air conditioner 100 according to an embodiment of the present application is described. The fresh air air conditioner 100 of this embodiment includes a housing 1, in which an indoor heat exchanger 2, a fresh air volute 3, a fresh air fan 4, a heat exchange fan 5, an air guide plate 6, and a drive motor 7 are arranged. The indoor heat exchanger 2 exchanges heat with the air passing through the indoor heat exchanger 2 to form a heat exchange airflow; the fresh air fan 4 is arranged in the fresh air volute 3 and is used to drive outdoor air into the room to deliver fresh air from the outdoor to the indoor space; the heat exchange fan 5 is arranged below the indoor heat exchanger 2 to draw in the indoor airflow, so that the indoor airflow enters the housing 1 through the indoor air inlet 8, flows through the indoor heat exchanger 2, exchanges heat with the indoor heat exchanger 2, and is output from the indoor air outlet and delivered to the room through the air guide plate 6.

[0068] The drive motor 7 includes an output shaft 7a, an inner rotor 7b, an outer rotor 7c, and a stator 7d. The output shaft 7a is connected to one of the fresh air fan 4 and the heat exchange fan 5. The inner rotor 7b is connected to the outer periphery of the output shaft 7a to drive the output shaft 7a to rotate. The outer rotor 7c is disposed on the outer periphery of the inner rotor 7b and is connected to the other of the fresh air fan 4 and the heat exchange fan 5. The stator 7d is disposed between the inner and outer rotors 7b and is fixedly connected to the housing 1. Furthermore, a first stator winding 7e corresponding to the inner rotor 7b is disposed on the side of the stator 7d facing the inner rotor 7b, i.e., on the inner side of the stator 7d. Operation of the first stator winding 7e drives the inner rotor 7b to rotate relative to the stator 7d. A second stator winding 7f corresponding to the outer rotor 7c is disposed on the side of the stator 7d facing the outer rotor 7c, i.e., on the outer side of the stator 7d. Operation of the second stator winding 7f drives the outer rotor 7c to rotate relative to the stator 7d.

[0069] By arranging the first stator winding 7e and the second stator winding 7f on the inner side and the outer side of the stator 7d, respectively, the first stator winding 7e and the second stator winding 7f can be separated from each other and do not interfere with each other. After connecting the first stator winding 7e and the second stator winding 7f to an external power supply, the user can control the external power supply to supply power to the first stator winding 7e and / or the second stator winding 7f according to their own needs. In this way, when the first stator winding 7e is energized, the first stator winding 7e can generate a corresponding magnetic field, driving the inner rotor 7b to rotate, thereby driving the output shaft 7a connected to the inner rotor 7b to rotate, thereby rotating the fresh air fan 4 or the heat exchange fan 5 connected to the output shaft 7a. When the second stator winding 7f is energized, the second stator winding 7f can also generate a corresponding magnetic field, driving the outer rotor 7c to rotate, thereby driving the fresh air fan 4 or the heat exchange fan 5 connected to the outer rotor 7c to rotate. The cooperation mode of the first stator winding 7e driving the inner rotor 7b to rotate and the cooperation mode of the second stator winding 7f driving the outer rotor 7c to rotate are the same as the cooperation mode of the stator 7d and the rotor of the motor, which will not be repeated here.

[0070] Through the above-described solution, the fresh air air conditioner 100 utilizes the first stator winding 7e and the inner rotor 7b to cooperate with each other to achieve independent operation of one of the fresh air fan 4 and the heat exchange fan 5, and utilizes the second stator winding 7f and the outer rotor 7c to cooperate with each other to achieve independent operation of the other of the fresh air fan 4 and the heat exchange fan 5. This allows the fresh air fan 4 and the heat exchange fan 5 to share the same drive motor 7, achieving independent rotation of the fresh air fan 4 and the heat exchange fan 5, thereby effectively shortening the air conditioning length of the fresh air air conditioner 100 and reducing the occupied area of ​​the fresh air air conditioner 100. Furthermore, by connecting the outer rotor 7c of the drive motor 7 to the fresh air fan 4 or the heat exchange fan 5, the drive motor 7 only needs to be equipped with a single output shaft 7a, further shortening the air conditioning length of the fresh air air conditioner 100 and facilitating installation and transportation of the fresh air air conditioner 100.

[0071] It should be noted that the heat exchange fan 5 and the fresh air fan 4 can select an appropriate fan structure according to the functions required by the air conditioner. As an example of this embodiment, the heat exchange fan 5 can be a cross-flow fan, and the heat exchange fan 5 is arranged in the shell 1 along the length direction of the shell 1. Compared with other fans, the cross-flow fan has the advantages of uniform air output, large air volume, low noise, air flow that can reach a long distance, simple and reasonable structure, good heating effect, high heat conversion efficiency, easy installation and maintenance, and strong overall stability. The fresh air fan 4 can be a centrifugal fan. The centrifugal fan has a good ventilation effect and is particularly suitable for use in duct exhaust or air supply. The centrifugal fan is very easy to maintain, and some models can be equipped with a cleaning door, which does not require disassembly for maintenance, saving time.

[0072] It is understandable that the fresh air fan 4 and the heat exchange fan 5 are arranged in the same direction, which is beneficial to reducing the occupied area of ​​the air conditioner. Figure 1-6 As an example of this embodiment, the fresh air fan 4 and the heat exchange fan 5 are arranged along the length direction of the shell 1, and the fresh air fan 4 and the heat exchange fan 5 are arranged coaxially, and one end of the output shaft 7a is connected and fixed to one of the fresh air fan 4 and the heat exchange fan 5, and the other end of the output shaft 7a is rotatably connected to the other of the fresh air fan 4 and the heat exchange fan 5.

[0073] By connecting the two ends of the output shaft 7a to the fresh air fan 4 and the heat exchange fan 5 respectively, and making one end of the output shaft 7a connected and fixed to one of the fresh air fan 4 and the heat exchange fan 5, and the other end of the output shaft 7a is rotatably connected to the other of the fresh air fan 4 and the heat exchange fan 5, the fresh air fan 4 and the heat exchange fan 5 can be arranged with the output shaft 7a as the rotation center, and the fan system of the air conditioner as a whole will be arranged along the length direction of the shell 1, making the fan system layout of the air conditioner more reasonable. Moreover, the fresh air fan 4 and the heat exchange fan 5 are arranged along the length direction of the shell 1, and the fresh air fan 4 and the heat exchange fan 5 are coaxially arranged, which can control the width and height of the air conditioner. The coaxially arranged fresh air fan 4 and heat exchange fan 5 can provide positioning and bearing functions for the output shaft 7a, which facilitates the installation and fixation of the output shaft 7a.

[0074] In order to ensure the stability of the output shaft 7a inside the housing 1 and the reliability of the connection between the two ends of the output shaft 7a and the fresh air fan 4 and the heat exchange fan 5, a connection structure can be set in the housing 1 to carry the output shaft 7a and ensure that it can rotate smoothly relative to the housing 1. Figure 3 As an example of this embodiment, a first bearing 9 is provided on the heat exchange fan 5, and the output shaft 7a is passed through the inner ring of the first bearing 9 at one end facing the heat exchange fan 5; and a second bearing 10 is provided on the housing 1, and the output shaft 7a is passed through the inner ring of the second bearing 10 at one end facing the fresh air fan 4 and is connected to the fresh air fan 4.

[0075] Utilizing the load capacity of the first bearing 9 and the second bearing 10, the first bearing 9 can ensure that the output shaft 7a can rotate relative to the heat exchange fan 5, so that the output shaft 7a can be rotatably connected to the heat exchange fan 5; the second bearing 10 is arranged on the housing 1, so that the second bearing 10 plays the role of supporting the output shaft 7a, ensuring that the output shaft 7a can be firmly connected to the housing 1 and can rotate relative to the housing 1, thereby outputting power to the fresh air fan 4 or the heat exchange fan 5, driving the fresh air fan 4 or the heat exchange fan 5 to rotate.

[0076] In order to further reduce the length of the fresh air air conditioner 100, the spacing between the fresh air fan 4 and the heat exchange fan 5 is preferably controlled within a certain size range so that the fresh air fan 4 and the heat exchange fan 5 can be close to each other in the length direction of the housing 1. Of course, the proximity of the fresh air fan 4 and the heat exchange fan 5 will compress the assembly space of the drive motor 7. Therefore, the structure of the drive motor 7 also needs to be adjusted so that the drive motor 7 can adapt to the smaller assembly space.

[0077] refer to Figure 3-4 As an example of this embodiment, the stator 7d, the inner rotor 7b, and the outer rotor 7c are coaxially arranged around the output shaft 7a with the output shaft 7a as the center axis, and the stator 7d, the inner rotor 7b, and the outer rotor 7c are extended in the same direction along the length direction of the output shaft 7a, and the extension lengths of the stator 7d, the inner rotor 7b, and the outer rotor 7c are the same.

[0078] Through the above scheme, the stator 7d, inner rotor 7b and outer rotor 7c of the drive motor 7 will be arranged around the output shaft 7a in layers in the radial direction of the output shaft 7a with the output shaft 7a as the center, wherein the inner rotor 7b is located in the inner layer of the motor structure, the outer rotor 7c is located in the outer layer of the motor structure, and the stator 7d is located between the inner rotor 7b and the outer rotor 7c. Moreover, the stator 7d, inner rotor 7b and outer rotor 7c are arranged in the same direction along the length direction of the output shaft 7a, and the extension length of the stator 7d, inner rotor 7b and outer rotor 7c is the same. The motor structure formed by the stator 7d, inner rotor 7b and outer rotor 7c is more compact, which can further compress the axial installation size of the drive motor 7 and shorten the length of the air conditioner.

[0079] It is understood that in order for the inner rotor 7b and the outer rotor 7c to rotate, they need to have corresponding magnetic properties when the first stator winding 7e and the second stator winding 7f are energized. To this end, the inner rotor 7b and the outer rotor 7c are generally made of magnetic materials.

[0080] refer to Figure 4 As an example of this embodiment, the inner rotor 7b includes a plurality of first magnetic bodies 70b, which are connected to the output shaft 7a, and the plurality of first magnetic bodies 70b are sequentially connected on the outer peripheral side of the output shaft 7a to form an annular structure surrounding the output shaft 7a, and the magnetic poles of two adjacent first magnetic bodies 70b are opposite.

[0081] The outer rotor 7c includes a plurality of second magnetic bodies 70c, which are connected and fixed to the heat exchange fan 5. In addition, the plurality of second magnetic bodies 70c are sequentially connected to the outer peripheral side of the stator 7d to form an annular structure surrounding the stator 7d, and the magnetic poles of two adjacent second magnetic bodies 70c are opposite; and the plurality of second magnetic bodies 70c and the plurality of first magnetic bodies 70b are coaxially arranged around the output shaft 7a with the output shaft 7a as the center axis.

[0082] It should be noted that the first magnetic body 70b and the second magnetic body 70c can be made of permanent magnetic material or soft magnetic material. Both materials can make the first magnetic body 70b magnetic when the first stator winding 7e is energized, and the second magnetic body 70c magnetic when the second stator winding 7f is energized.

[0083] It should be noted that the first magnetic body 70b can be directly connected to the output shaft 7a by bonding, screwing, or other means to achieve connection with the output shaft 7a. For example, if the first magnetic body 70b is a magnetic tile, it can be bonded to the output shaft 7a with an adhesive to securely connect the first magnetic body 70b to the output shaft 7a. The first magnetic body 70b can also be connected to the output shaft 7a by a structure such as a bracket, by mounting the first magnetic body 70b on the bracket, and then mounting the bracket on the output shaft 7a.

[0084] Through the above scheme, multiple first magnetic bodies 70b are arranged around the outer circumference of the output shaft 7a, so that the inner rotor 7b is arranged with the output shaft 7a as the center. In this way, when the first stator winding 7e is energized to generate a magnetic field, driving the inner rotor 7b to rotate, the output shaft 7a can rotate with the inner rotor 7b, and the output shaft 7a will not deviate from its current axial position, thereby compressing the circumferential installation size of the drive motor 7 and controlling the specifications of the air conditioner.

[0085] In addition, multiple second magnetic bodies 70c are arranged around the outer peripheral side of the stator 7d, so that the outer rotor 7c is arranged with the stator 7d as the center, and the multiple second magnetic bodies 70c and the multiple first magnetic bodies 70b are coaxially arranged around the output shaft 7a. In this way, the inner rotor 7b, the stator 7d and the outer rotor 7c are arranged in sequence in the circumferential direction of the output shaft 7a, and the inner rotor 7b and the outer rotor 7c rotate with the output shaft 7a as the rotation center. The fresh air fan 4 and the heat exchange fan 5 also rotate with the output shaft 7a as the rotation center, ensuring the coaxiality of the fresh air fan 4 and the heat exchange fan 5.

[0086] In order to use a drive motor 7 to drive the inner rotor 7b and the outer rotor 7c to rotate respectively, it is necessary to configure two independent and non-interfering stator windings in the drive motor 7 so that the inner rotor 7b and the outer rotor 7c can respectively cooperate with different stator windings and be driven to rotate by the magnetic field force generated by the corresponding stator windings being energized.

[0087] refer to Figure 4 As an example of this embodiment, the stator 7d includes a stator body 70d, a plurality of first pole shoes 71d and a plurality of second pole shoes 72d, wherein the stator body 70d is arranged around the inner rotor 7b, and the stator body 70d is fixedly connected to the housing 1; the plurality of first pole shoes 71d are arranged on the side of the stator body 70d facing the inner rotor 7b, and the plurality of first pole shoes 71d extend toward the inner rotor 7b, and a first air gap 7g is left between the inner rotor 7b; the first stator winding 7e is arranged on the plurality of first pole shoes 71d; the plurality of second pole shoes 72d are arranged on the side of the stator body 70d facing the outer rotor 7c, and the plurality of second pole shoes 72d extend toward the outer rotor 7c, and a second air gap 7h is left between the outer rotor 7c; the second stator winding 7f is arranged on the plurality of second pole shoes 72d.

[0088] Enameled wire is wound around the first pole shoe 71d to form a three-phase winding located inside the stator body 70d. One end of this three-phase winding is connected together, and the other end is connected to an external power source, forming the first stator winding 7e. Correspondingly, enameled wire is wound around the second pole shoe 72d to form a three-phase winding located outside the stator body 70d. One end of this three-phase winding is connected together, and the other end is connected to an external power source, forming the second stator winding 7f.

[0089] It should be noted that the first pole shoe 71d and the second pole shoe 72d are arranged on the inner and outer sides of the stator body 70d, respectively. Furthermore, the first pole shoe 71d and the second pole shoe 72d are arranged circumferentially of the stator body and extend radially of the stator body 70d. Depending on the number of first magnetic bodies 70b and second magnetic bodies 70c configured in the inner rotor 7b and the outer rotor 7c, the number of first pole shoes 71d and second pole shoes 72d can be equal or unequal. The first pole shoe 71d and the second pole shoe 72d can be arranged in the same radial direction of the stator body 70d or staggered circumferentially of the stator body.

[0090] Based on the structural layout of the stator 7d, the drive motor 7 of this embodiment can use one stator 7d to drive the inner rotor 7b and the outer rotor 7c to rotate respectively, thereby compressing the volume of the drive motor 7, which is beneficial to improving the utilization rate of the internal space of the air conditioner and controlling the specifications and dimensions of the air conditioner.

[0091] To facilitate power transmission from the outer rotor 7c to the fresh air fan 4 or the heat exchange fan 5, the outer rotor 7c can be directly connected to the fresh air fan 4 or the heat exchange fan 5. For example, as an example of this embodiment, the outer rotor 7c is integrally formed with the housing 1 of one of the fresh air fan 4 or the heat exchange fan 5. This integral formation of the outer rotor 7c with the housing 1 of one of the fresh air fan 4 or the heat exchange fan 5 ensures a strong connection between the outer rotor 7c and the fresh air fan 4 or the heat exchange fan 5, simplifies the assembly process of the outer rotor 7c, and improves the overall assembly efficiency of the air conditioner.

[0092] Of course, the direct connection of the outer rotor 7c to the fresh air fan 4 or the heat exchange fan 5 requires a corresponding mounting structure to be configured on the fresh air fan 4 or the heat exchange fan 5 to provide appropriate assembly space for the outer rotor 7c. As an example of this embodiment, one of the heat exchange fan 5 or the fresh air fan 4 is provided with a first fixing portion 13 on the side facing the other. The first fixing portion 13 defines a first mounting cavity 14. Furthermore, the outer rotor 7c, stator 7d, and inner rotor 7b are collectively housed within the first mounting cavity 14, and the outer rotor 7c is connected and fixed to the inner wall of the first mounting cavity 14. The first fixing portion 13 provides structural protection for the outer rotor 7c, stator 7d, and inner rotor 7b.

[0093] refer to Figure 3 Taking the heat exchange fan 5 as an example, the heat exchange fan 5 has a wind wheel 11 and an end plate 12. A first fixing portion 13 is provided on the end plate 12 on the side of the heat exchange fan 5 facing the fresh air fan 4. The first fixing portion 13 is a cylindrical structure and is coaxially arranged with the heat exchange fan 5. A first installation cavity 14 is defined within the first fixing portion 13. The first installation cavity 14 is a cylindrical cavity, and the opening of the first installation cavity 14 faces the fresh air fan 4. The outer rotor 7c, stator 7d, and inner rotor 7b are collectively built into the first installation cavity 14. The extension length of the outer rotor 7c, stator 7d, and inner rotor 7b in the longitudinal direction of the housing 1 matches the first installation cavity 14, so that the outer rotor 7c, stator 7d, and inner rotor 7b can fill the first installation cavity 14. The outer rotor 7c is connected and fixed to the inner wall of the first installation cavity 14, so that the outer rotor 7c is connected and fixed to the heat exchange fan 5.

[0094] Of course, the first installation cavity 14 can also be directly set on the wind wheel 11 of one of the heat exchange fan 5 and the fresh air fan 4, so that the power output by the outer rotor 7c directly acts on the wind wheel 11 of one of the heat exchange fan 5 and the fresh air fan 4.

[0095] refer to Figure 8As an example of this embodiment, the heat exchange fan 5 and the fresh air fan 4 both have a wind wheel 11, and a first mounting cavity 14 is formed on the wind wheel 11 of the fresh air fan 4. In this way, the outer rotor 7c or the second magnetic body 70c can be installed in the first mounting cavity 14 and connected and fixed to the fresh air fan 4, so that the outer rotor 7c can directly drive the wind wheel 11 of the fresh air fan 4 to rotate, which is beneficial to the output transmission of the power of the outer rotor 7c. Moreover, the first mounting cavity 14 can provide a space for the outer rotor 7c to be connected and fixed, so that the outer rotor 7c can be connected and fixed to the heat exchange fan 5 or the fresh air fan 4.

[0096] In summary, the fresh air air conditioner 100 provided in the embodiment of the present application is provided with a first stator winding 7e and a second stator winding 7f on the stator 7d, and the first stator winding 7e is provided corresponding to the inner rotor 7b, and the second stator winding 7f is provided corresponding to the outer rotor 7c. In this way, inputting three-phase alternating current to the first stator winding 7e can drive the inner rotor 7b to rotate relative to the stator 7d, thereby driving the output shaft 7a connected to the inner rotor 7b to rotate, so that the output shaft 7a can drive one of the fresh air fan 4 and the heat exchange fan 5 to rotate, and by inputting three-phase alternating current to the second stator winding 7e Group 7f inputs three-phase alternating current, which can drive the outer rotor 7c to rotate relative to the stator 7d, so that the outer rotor 7c drives the other of the fresh air fan 4 and the heat exchange fan 5 to rotate, and the first stator winding 7e and the second stator winding 7f are respectively arranged on the inner and outer sides of the stator 7d, and the two do not interfere with each other and are independent of each other, so that the fresh air fan 4 and the heat exchange fan 5 can be driven respectively by the same drive motor 7, so that the fresh air fan 4 and the heat exchange fan 5 can operate independently, so that the fresh air air conditioner 100 can reduce the internal installation space, thereby shortening the length of the fresh air air conditioner 100.

[0097] In addition, the fresh air air conditioner 100 provided in the embodiment of the present application arranges the inner rotor 7b, the outer rotor 7c and the stator 7d coaxially, and the drive motor 7 can drive the inner rotor 7b and the outer rotor 7c to rotate respectively with one stator 7d, thereby compressing the volume of the drive motor 7, which is beneficial to improving the utilization rate of the internal space of the air conditioner and controlling the specifications and dimensions of the air conditioner.

[0098] Moreover, the stator 7d, inner rotor 7b and outer rotor 7c of the fresh air air conditioner 100 provided in the embodiment of the present application can be arranged together along the length direction of the output shaft 7a, and the extension lengths of the stator 7d, inner rotor 7b and outer rotor 7c are the same, which can greatly compress the axial installation dimensions of the drive motor 7 and further shorten the length of the air conditioner.

[0099] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present application. These improvements and replacements should also be regarded as the scope of protection of the present application.

Claims

1. A fresh air air conditioner, characterized in that: include: case; an indoor heat exchanger, disposed in the housing; A fresh air fan is provided in the housing and is used to drive outdoor air into the room; a heat exchange fan, disposed in the housing, and configured to drive indoor air to flow through the indoor heat exchanger; A drive motor capable of driving the heat exchange fan and the fresh air fan to rotate independently, wherein the drive motor comprises: an output shaft connected to one of the fresh air fan and the heat exchange fan; an inner rotor connected to the outer circumference of the output shaft to drive the output shaft to rotate; an outer rotor, disposed on an outer circumference of the inner rotor and connected to the other of the fresh air fan and the heat exchange fan; The stator is arranged between the inner rotor and the outer rotor and is fixedly connected to the housing, and A first stator winding corresponding to the inner rotor is provided on a side of the stator facing the inner rotor, and the operation of the first stator winding can drive the inner rotor to rotate relative to the stator; A second stator winding corresponding to the outer rotor is provided on a side of the stator facing the outer rotor. The operation of the second stator winding can drive the outer rotor to rotate relative to the stator.

2. The fresh air air conditioner according to claim 1, characterized in that: The stator, the inner rotor, and the outer rotor are coaxially arranged around the output shaft with the output shaft as the center axis. In addition, the stator, the inner rotor, and the outer rotor are extended in the same direction along the length of the output shaft, and the extension lengths of the stator, the inner rotor, and the outer rotor are the same.

3. The fresh air air conditioner according to claim 1 or 2, characterized in that: The inner rotor comprises: A plurality of first magnetic bodies are connected to the output shaft, and the plurality of first magnetic bodies are sequentially connected on the outer peripheral side of the output shaft to form an annular structure surrounding the output shaft, and the magnetic poles of two adjacent first magnetic bodies are opposite.

4. The fresh air air conditioner according to claim 3, characterized in that: The outer rotor comprises: A plurality of second magnetic bodies are connected to one of the fresh air fan and the heat exchange fan, and the plurality of second magnetic bodies are sequentially connected on the outer peripheral side of the stator to form an annular structure surrounding the stator, and the magnetic poles of two adjacent second magnetic bodies are opposite; and the plurality of second magnetic bodies and the plurality of first magnetic bodies are coaxially arranged around the output shaft with the output shaft as the center axis.

5. The fresh air air conditioner according to claim 1, characterized in that: The stator comprises: a stator body, arranged around the inner rotor and fixedly connected to the housing; a plurality of first pole shoes, disposed on a side of the stator body facing the inner rotor, the plurality of first pole shoes extending toward the inner rotor and leaving a first air gap between the first pole shoes and the inner rotor; the first stator winding being disposed on the plurality of first pole shoes; A plurality of second pole shoes are arranged on a side of the stator body facing the outer rotor, and the plurality of second pole shoes extend toward the outer rotor, with a second air gap left between the second pole shoes and the outer rotor; the second stator winding is arranged on the plurality of second pole shoes.

6. The fresh air air conditioner according to claim 1, characterized in that: The outer rotor is integrally formed with a housing of one of the fresh air fan and the heat exchange fan.

7. The fresh air air conditioner according to claim 1, characterized in that: One of the heat exchange fan and the fresh air fan is provided with a first fixing portion on the side facing the other, and the first fixing portion is provided with a first installation cavity; and the outer rotor, the stator and the inner rotor are jointly built into the first installation cavity, and the outer rotor is connected and fixed to the inner wall of the first installation cavity.

8. The fresh air air conditioner according to claim 7, characterized in that: The heat exchange fan and the fresh air fan both have a wind wheel, and the first installation cavity is formed on the wind wheel of one of the heat exchange fan and the fresh air fan.

9. The fresh air air conditioner according to claim 1, characterized in that: The fresh air fan and the heat exchange fan are arranged along the length direction of the shell, and the fresh air fan and the heat exchange fan are arranged coaxially, and one end of the output shaft is connected and fixed to one of the fresh air fan and the heat exchange fan, and the other end of the output shaft is rotatably connected to the other of the fresh air fan and the heat exchange fan.

10. The fresh air air conditioner according to claim 1 or 9, characterized in that: A first bearing is provided on the heat exchange fan, and the output shaft is passed through the inner ring of the first bearing at one end facing the heat exchange fan; and a second bearing is provided on the housing, and the output shaft is passed through the inner ring of the second bearing at one end facing the fresh air fan and is connected to the fresh air fan.

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