Fan water pump assembly and water heater

Abstract

The utility model discloses a fan water pump assembly and a water heater, and relates to the technical field of water heaters. The fan water pump assembly comprises a machine shell, a driving device, a wind wheel and a water wheel, a wind cavity and a water cavity which are separated from each other are formed in the machine shell, and the machine shell is provided with a first supporting shaft and a second supporting shaft corresponding to the wind cavity and the water cavity respectively. The driving device is installed on the machine shell and provided with a first output end and a second output end which can output independently. The wind wheel is in driving connection with the first output end and is installed on the machine shell through a first supporting shaft. The water wheel is in driving connection with the second output end and installed on the machine shell through a second supporting shaft. According to the technical scheme, the fan and the water pump can be integrated and share the same driving device, the size is reduced, the installation space is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a fan and water pump assembly and a water heater. Background Technology

[0002] In related technologies, some water heaters contain both a fan and a water pump, each requiring a separate drive unit. For example, the fan and water pump each have their own motor, and each motor requires a corresponding electrical control system. This increases the cost of the water heater, and the two drive units occupy a large installation space inside the water heater, resulting in a larger size. Furthermore, installation requires two separate steps, leading to low assembly efficiency. Utility Model Content

[0003] The main purpose of this utility model is to propose a fan and water pump assembly that integrates the fan and water pump into one unit, sharing the same drive device, reducing volume, minimizing installation space, and improving assembly efficiency.

[0004] To achieve the above objectives, the present invention provides a fan and water pump assembly comprising:

[0005] The housing has a mutually separated air cavity and water cavity, and the housing is provided with a first support shaft and a second support shaft corresponding to the air cavity and the water cavity, respectively;

[0006] A drive unit is mounted on the housing and has a first output terminal and a second output terminal that can output independently of each other;

[0007] The wind turbine is driven and connected to the first output end, and is mounted to the housing via the first support shaft; and

[0008] The water turbine is driven and connected to the second output end, and is mounted to the housing via the second support shaft.

[0009] In one embodiment of this application, the driving device includes:

[0010] Stator assembly, mounted on the housing;

[0011] The first rotor rotates in conjunction with the stator assembly and is configured to connect the first output end to the wind turbine drive; and

[0012] The second rotor rotates in conjunction with the stator assembly and is configured to connect the second output end to the water turbine drive; the first rotor and the second rotor are configured to rotate independently of each other.

[0013] In one embodiment of this application, the housing includes:

[0014] The base separates the air chamber and water chamber, and the stator assembly is mounted on the base;

[0015] A volute, connected to and enclosing one side of the base to form a wind chamber, with the first rotor and impeller disposed within the wind chamber; and

[0016] The pump casing is connected to and encloses the other side of the base to form a water cavity, and the second rotor and water impeller are located inside the water cavity.

[0017] In one embodiment of this application, the base includes:

[0018] The end face flange, with the wind turbine and water turbine respectively located on opposite axial sides of the end face flange; and

[0019] An annular support is located at one end of the end flange near the impeller. The annular support is equipped with a partition, which divides the inner cavity of the annular support into a first receiving groove and a second receiving groove arranged along the axial direction. The first receiving groove is connected to the air cavity, and the second receiving groove is connected to the water cavity.

[0020] The first support shaft is installed in the first receiving groove, and the second support shaft is installed in the second receiving groove; the stator assembly is located on the periphery of the annular bracket corresponding to the second receiving groove, the second rotor is installed in the second receiving groove, and the first rotor is located on the periphery of the stator assembly and connected to the first support shaft.

[0021] In one embodiment of this application, the stator assembly has a first side close to the end face flange and a second side away from the end face flange in the axial direction of the end face flange, and the first receiving groove protrudes axially from the second side of the stator assembly.

[0022] In one embodiment of this application, the first rotor includes:

[0023] The rotor housing includes a first cylindrical section, a second cylindrical section, and a third cylindrical section connected sequentially in a stepped manner along the axial direction. The first cylindrical section is correspondingly sleeved around the stator assembly, the second cylindrical section is correspondingly sleeved around the first receiving groove, and the third cylindrical section is located on the side of the first receiving groove axially opposite to the second receiving groove. A wind turbine is mounted outside the second and third cylindrical sections. A first support shaft passes through the third cylindrical section and is fixed to the wind turbine by a locking member.

[0024] The first magnetic ring is located on the inner circumferential surface of the first cylindrical part.

[0025] In one embodiment of this application, the outer diameter of the stator assembly is larger than the outer diameter of the second cylinder, and the outer diameter of the stator assembly is smaller than the outer diameter of the wind turbine.

[0026] In one embodiment of this application, the outer diameter of the first rotor is smaller than the outer diameter of the wind turbine.

[0027] In one embodiment of this application, the impeller is disposed on the side of the stator assembly away from the end face flange. The part of the first rotor used to install the impeller is defined as the mounting part. The outer periphery of the mounting part is gradually widened in a trumpet shape from the end away from the end face flange to the part close to the stator assembly.

[0028] In one embodiment of this application, the second rotor includes a bushing, a second rotating shaft, and a second magnetic ring, which are sequentially sleeved outside the second support shaft from the inside to the outside. The second magnetic ring is disposed opposite to the inner peripheral wall of the stator assembly, and the second rotating shaft is connected to the water turbine.

[0029] In one embodiment of this application, the first support shaft is a rolling shaft that rotates with the housing, and the impeller is fixedly connected to the first support shaft;

[0030] And / or, the second support shaft is a fixed shaft fixed to the machine casing, and the water turbine is in sliding fit with the second support shaft.

[0031] In one embodiment of this application, the first support shaft is a metal shaft; and / or, the second support shaft is a ceramic shaft.

[0032] In one embodiment of this application, the volute and stator assembly are packaged into an integral structure;

[0033] Alternatively, the volute, stator assembly, and base can be packaged into a single structure;

[0034] Alternatively, the stator assembly and base can be packaged into a single structure.

[0035] In one embodiment of this application, the stator assembly includes:

[0036] The stator core has internal teeth and external teeth respectively located on both radial sides. The second rotor is located inside the stator core and opposite to the internal teeth. The first rotor is located on the periphery of the stator core and opposite to the external teeth.

[0037] The first winding is wound on the external teeth and drives the first rotor; and

[0038] The second winding is wound on the internal teeth and cooperates with the second rotor drive. The second winding and the first winding are configured to be independently controllable.

[0039] In one embodiment of this application, the stator core is an integral structure;

[0040] Alternatively, the stator core is a chain structure composed of multiple core sections connected end to end. Each core section has a yoke and internal and external teeth located on the inner and outer sides of the yoke. Multiple yoke sections are rolled up to form an annular yoke.

[0041] In one embodiment of this application, the stator assembly further includes a stator frame, which includes an annular support, a plurality of first slot insulating portions and a plurality of second slot insulating portions. The plurality of first slot insulating portions are spaced apart on the outer peripheral surface of the annular support and inserted between two adjacent external teeth. The plurality of second slot insulating portions are spaced apart on the inner peripheral surface of the annular support and inserted between two adjacent internal teeth.

[0042] The first winding is wound on the first slot insulation portion, and the second winding is wound on the second slot insulation portion.

[0043] In one embodiment of this application, the axial end face of the annular bracket is provided with a wiring groove, the outer wall of the wiring groove is provided with a first wire passage opening, the inner wall of the wiring groove is provided with a second wire passage opening, the first wire passage opening connects the wiring groove with the inner cavity of the first groove insulation part, and the second wire passage opening connects the wiring groove with the inner cavity of the second groove insulation part.

[0044] To achieve the above objectives, this application also provides a water heater, comprising:

[0045] Flue system;

[0046] A water system for heat exchange with the flue system; and

[0047] The aforementioned fan and water pump assembly is connected to both the flue system and the water system. The fan impeller drives the airflow along the flue system, and the water impeller drives the water flow along the water system.

[0048] In this utility model's fan and water pump assembly, the housing contains a separated air chamber and a water chamber. The air chamber houses a fan impeller, which is mounted to the housing via a first support shaft. The water chamber houses a water impeller, which is mounted to the housing via a second support shaft. A drive device with a first output end and a second output end is installed on the housing. The first output end is connected to the fan impeller drive, enabling the fan impeller to rotate and thus achieving the fan function. The second output end is connected to the water impeller drive, enabling the water impeller to rotate and thus achieving the water pump function. Therefore, this embodiment of the fan and water pump assembly integrates the fan and water pump functions into one unit, driven by the same drive device, resulting in higher integration, a smaller overall size, and saved installation space. When this fan and pump assembly is applied to a water heater, it reduces the cost of the water heater while saving internal installation space, which helps to reduce the size of the water heater. Furthermore, when assembling the water heater, the fan and pump assembly only needs to be installed on the water heater body at one time. Compared with traditional water heaters, which require the fan and pump to be installed separately on the water heater body, this solution simplifies the installation steps and improves assembly efficiency. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0050] Figure 1 and Figure 2 This is a schematic diagram of the structure of an embodiment of the fan and water pump assembly of this application;

[0051] Figure 3 This is an exploded structural diagram of an embodiment of the volute and stator assembly BMC packaged together in this application;

[0052] Figure 4 This is a schematic diagram of the base structure in an embodiment of this application;

[0053] Figure 5 This is a schematic diagram of another embodiment of the fan and water pump assembly of this application;

[0054] Figure 6 for Figure 5 Exploded view of the embodiment of the middle stator assembly and base potting encapsulation;

[0055] Figure 7 This is a schematic diagram of the structure of yet another embodiment of the fan and water pump assembly of this application;

[0056] Figure 8 This is a schematic diagram of the stator assembly in an embodiment of this application;

[0057] Figure 9 This is an exploded view of the stator assembly in an embodiment of this application;

[0058] Figure 10 This is a schematic diagram of a chain-type stator core in an embodiment of this application;

[0059] Figure 11 This is a schematic diagram of the assembly structure of the outer pole shoe and the toothed part in this application;

[0060] Figure 12 This is a schematic diagram of the structure of one embodiment of the stator frame in this application;

[0061] Figure 13 This is a schematic diagram of the skeleton body in this application;

[0062] Figure 14 This is a schematic diagram of the second rotor and water turbine integrated structure embodiment in this application.

[0063] Explanation of icon numbers:

[0064]

[0065]

[0066] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0067] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0068] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0069] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0070] Furthermore, if the embodiments of this utility model involve descriptions such as "second" or "first," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "second" or "first" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0071] This utility model proposes a fan and water pump assembly that integrates the fan and water pump into one unit, sharing a single drive device, thus reducing size, installation space, and assembly efficiency. When applied to water heaters, it can reduce water heater costs, decrease water heater size, and improve assembly efficiency. The structure of the fan and water pump assembly will be described below with reference to embodiments.

[0072] like Figure 1 ,Figure 2 , Figure 5 as well as Figure 7 As shown, the fan and water pump assembly includes a housing 1, a drive unit 2, a fan wheel 31, and a water wheel 32.

[0073] The housing 1 has a wind chamber A and a water chamber B that are separated from each other. The housing 1 is provided with a first support shaft 41 and a second support shaft 51 corresponding to the wind chamber A and the water chamber B, respectively. The drive device 2 is installed on the housing 1 and has a first output end and a second output end that can output independently of each other. The impeller 31 is driven to the first output end and is installed on the housing 1 through the first support shaft 41. The water impeller 32 is driven to the second output end and is installed on the housing 1 through the second support shaft 51.

[0074] In this embodiment, the housing 1 serves to support and mount the drive unit 2, the impeller 31, and the water turbine 32, integrating all components into one unit. An air chamber A and a water chamber B are formed within the housing 1, and are separated from each other to ensure air-water separation. Optionally, a separator can be provided between the air chamber A and the water chamber B. The drive unit 2 is mounted on the housing 1 and has a first output end and a second output end capable of torque output. The first and second output ends can be configured to output torque synchronously or independently. The first output end can be directly driven to the impeller 31, or indirectly driven to the impeller 31 through a transmission structure; the second output end can be directly driven to the pump impeller, or indirectly driven to the pump impeller through a transmission structure. The first output end and the impeller 31 can be connected via contact or non-contact power transmission. The second output end and the water turbine 32 can be connected via contact or non-contact power transmission. Air chamber A has an air inlet and an air outlet, and water chamber B has a water inlet and a water outlet. The number of air inlets, air outlets, water inlets, and water outlets can be one, two, or more.

[0075] Understandably, the first output terminal can drive the wind turbine 31 to rotate, realizing the fan function and meeting the air volume requirement; the second output terminal can drive the water turbine 32 to rotate, realizing the water pump function and meeting the water volume requirement. The wind turbine 31 can operate alone, the water turbine 32 can operate alone, or both can operate simultaneously. It should be noted that when the wind turbine 31 and the water turbine 32 operate simultaneously, they can rotate synchronously or asynchronously, and their speeds can be the same or different. They rotate independently without interference.

[0076] The specific structure of the housing 1 can be determined according to the actual situation; for example, it can be an integral structure or a split structure. The wind turbine 31 is mounted on the housing 1 through the first support shaft 41, and the water turbine 32 is mounted on the housing 1 through the second support shaft 51. It can be understood that the wind turbine 31, the water circuit, and the drive device 2 are all integrated into a single housing 1 structure. That is, the wind turbine structure and the water pump structure share the same drive device 2 and the same housing 1 mechanism, which has a higher degree of integration. Compared with related technologies that install independent wind turbine structures and water pump structures in the equipment separately, it can further reduce the volume, reduce the installation space, and save material costs.

[0077] Optionally, the first support shaft 41 can be a rolling shaft or a fixed shaft. Optionally, the second support shaft 51 can be a rolling shaft or a fixed shaft. Optionally, the drive device 2 can be a single-stator dual-rotor motor, a dual-stator dual-rotor motor, or some other drive device 2 with two outputs.

[0078] When this fan and pump assembly is used in a water heater, the fan 31 and pump assembly are connected to both the flue system and the water system. The fan 31 drives the airflow along the flue system, and the water impeller 32 drives the water flow along the water system. For example, the water heater includes a burner, a combustion chamber housing, a heat exchanger, and a fume hood arranged in sequence. The heat exchanger is connected to an inlet pipe and an outlet pipe. The flue gas flow channel between the burner and the fume hood constitutes the flue system, and the inlet pipe is connected to the outlet pipe via the heat exchanger to constitute the water system. The fan 31 can be connected to either the inlet or outlet of the flue system; the water impeller 32 can be connected in series with either the inlet or outlet pipe. For example, when this fan and pump assembly is applied to a forced-draft gas water heater, the air outlet of the impeller 31 can be connected to the burner (i.e., the impeller 31 is connected to the inlet end of the flue system). In this case, the impeller 31 can function as a forced-draft fan, driving the high-temperature flue gas generated by the burner through the combustion chamber to the heat exchanger for heat exchange, and driving the flue gas after heat exchange to be collected by the fume hood and discharged outside the water heater. On the other hand, the impeller 31 can also be used to deliver air into the burner to supplement the secondary air required for combustion. As another example, when this fan and pump assembly is applied to a forced-extraction gas water heater, the air inlet of the impeller 31 can be connected to the fume hood (i.e., the impeller 31 is connected to the outlet end of the flue system). In this case, the impeller 31 can function as a forced-extraction fan, drawing the high-temperature flue gas generated by the burner towards the fume hood, and finally discharging it outside the water heater through the air outlet of the impeller 31. The water turbine 32 can be connected in series in the water system to increase water pressure and flow, thus functioning as a water pump. Therefore, the fan-pump assembly of this embodiment integrates the fan and pump into one unit and can be driven by the same drive device 2. Compared with related technologies that install separate fan and pump structures in the water heater, this saves material costs and reduces size. On the one hand, it reduces installation space, allowing more space inside the water heater for installing other expansion modules while maintaining the same water heater size. On the other hand, it reduces installation steps and improves assembly efficiency. Furthermore, the aforementioned fan-pump assembly can cool the stator assembly 21 and the second rotor 23 when cold water is pumped through them, which helps reduce the temperature rise of the stator assembly 21 and the second rotor 23, extending their service life.

[0079] In summary, in the fan and water pump assembly of this utility model, the housing 1 is provided with a separated air chamber A and a water chamber B. The air chamber A is provided with a fan wheel 31, which is mounted on the housing 1 via a first support shaft 41. The water chamber B is provided with a water wheel 32, which is mounted on the housing 1 via a second support shaft 51. By providing a drive device 2 with a first output end and a second output end on the housing 1, the first output end is driven to drive the fan wheel 31 to rotate, realizing the fan function. The second output end is driven to drive the water wheel 32 to rotate, realizing the water pump function. Thus, the fan and water pump assembly of this embodiment can integrate the fan function and the water pump function into one unit and be driven by the same drive device 2, resulting in higher integration, smaller overall size, and saving installation space. When this fan and pump assembly is applied to a water heater, it reduces the cost of the water heater while saving internal installation space, which helps to reduce the size of the water heater. Furthermore, when assembling the water heater, the fan and pump assembly only needs to be installed on the water heater body at one time. Compared with traditional water heaters, which require the fan and pump to be installed separately on the water heater body, this solution simplifies the installation steps and improves assembly efficiency.

[0080] Please see Figure 1 , Figure 2 , Figure 5 as well as Figure 7 In one embodiment of this application, the drive device 2 includes a stator assembly 21, a first rotor 22, and a second rotor 23. The stator assembly 21 is mounted on the housing 1. The first rotor 22 is rotatably coupled with the stator assembly 21 and is configured to have a first output end that is driven to connect with the wind turbine 31. The second rotor 23 is rotatably coupled with the stator assembly 21 and is configured to have a second output end that is driven to connect with the water turbine 32. The first rotor 22 and the second rotor 23 are configured to rotate independently of each other.

[0081] Understandably, the drive device 2 is a dual-rotor motor. A first magnetic circuit is formed between the first rotor 22 and the stator assembly 21, so that the stator assembly 21 can drive the first rotor 22 to rotate, thereby driving the impeller 31 to rotate, so as to drive the airflow from the air inlet of the air chamber A to the air outlet, thereby realizing the function of a fan. A second magnetic circuit is formed between the second rotor 23 and the stator assembly 21, so that the stator assembly 21 can drive the second rotor 23 to rotate, thereby driving the water wheel 32 to rotate, so as to drive the water flow from the water inlet of the water chamber B to the water outlet, thereby realizing the function of a water pump.

[0082] In practical applications, the specific structure of the stator assembly 21 can be determined according to the actual situation. For example, it can be two independent stator structures that cooperate with the first rotor 22 and the second rotor 23 respectively; it can also be a single stator core 211 equipped with two independent stator windings that cooperate with the first rotor 22 and the second rotor 23 respectively; or it can be a single stator structure that independently controls the first rotor 22 and the second rotor 23, etc., as long as it can drive the two rotors to rotate independently and achieve independent torque output. This fan-pump assembly can use one control system to control the two rotors to operate independently, or it can use two control systems to control the two rotors to operate independently of each other. The specific control method is not limited here.

[0083] Optionally, the impeller 31 is fixedly connected to the first rotor 22, and the first support shaft 41 connects the casing 1 to the impeller 31 and / or the first rotor 22 to provide support for the first rotor 22 and the impeller 31. Optionally, the water turbine 32 is fixedly connected to the second rotor 23, and the second support shaft 51 connects the casing 1 to the water turbine 32 and / or the second rotor 23 to provide support for the second rotor 23 and the water turbine 32.

[0084] Please see Figure 1 , Figure 2 , Figure 5 , Figure 7 as well as Figures 8 to 11 In one embodiment of this application, the stator assembly 21 has two independently controllable first windings 213 and second windings 214. The first winding 213 is driven to cooperate with the first rotor 22, and the second winding 214 is driven to cooperate with the second rotor 23.

[0085] In this embodiment, a first winding 213 and a second winding 214 that are independently controlled are set in the same set of stator assembly 21. That is, the first winding 213 and the second winding 214 do not interfere with each other. They can be independently connected to the corresponding electronic control system and controlled by two independent frequency converters to realize the independent driving of the first rotor 22 and the second rotor 23. In this way, the wind turbine 31 and the water turbine 32 can be driven independently to meet different operating conditions and realize the air volume and water volume requirements.

[0086] Specifically, the stator assembly 21 also includes a stator core 211, which has internal teeth 2111 and external teeth 2112 respectively disposed on its radial sides. A second winding 214 is wound on the internal teeth 2111, and a first winding 213 is wound on the external teeth 2112. A second rotor 23 is disposed on the inner side of the stator core 211 and is disposed opposite to the internal teeth 2111. A first rotor 22 is disposed on the outer periphery of the stator core 211 and is disposed opposite to the external teeth 2112.

[0087] In this embodiment, the inner teeth 2111 and the outer teeth 2112 are located on the radial sides of the stator core 211, respectively. The first winding 213 and the second winding 214 are located on the radial sides of the stator core 211, respectively. When the second winding 214 and the first winding 213 are energized, two independent magnetic fields can be generated on the inner and outer radial sides of the stator core 211, respectively, so as to drive the second rotor 23 and the first rotor 22 to rotate, providing two different outputs.

[0088] In one embodiment of this application, the stator core 211 can be an integral structure formed by stamping.

[0089] Please see Figure 10 and Figure 11 In one embodiment of this application, the stator core 211 is a chain structure formed by connecting multiple core portions 211a end to end. Each core portion 211a has a yoke and inner teeth 2111 and outer teeth 2112 respectively disposed on the inner and outer sides of the yoke. The multiple yoke portions are rolled into a ring-shaped yoke.

[0090] In this embodiment, the stator core 211 has a chain structure. Compared with a solid round core, this design reduces the volume during manufacturing and facilitates winding, thus improving production efficiency. Optionally, in practical applications, the stator core 211 can be a ring structure formed by rolling the chain structure. In this case, multiple yokes are connected end to end to form a ring yoke. Multiple internal teeth 2111 are spaced apart on the inner peripheral wall of the ring yoke, and a second stator slot 2111a is formed between two adjacent internal teeth 2111. Multiple external teeth 2112 are spaced apart on the outer peripheral wall of the ring yoke, and a first stator slot 2112a is formed between two adjacent external teeth 2112.

[0091] Optionally, the core section 211a is an integral structure.

[0092] In one embodiment of this application, the external tooth 2112 includes a tooth portion 21121 and an external pole shoe portion 21122. The tooth portion 21121 is connected to the yoke portion, and the external pole shoe portion 21122 is inserted and assembled with the outer side wall of the tooth portion 21121.

[0093] Understandably, the inner diameter of the inner tooth 2111 is smaller than the outer diameter of the outer tooth 2112. Since the chain structure is a straight strip before rolling, the gap between adjacent outer teeth 2112 is smaller before rolling than after rolling. To avoid potential interference between the outer teeth 2112 before rolling, in this embodiment, the outer tooth 2112 includes a tooth portion 21121 and an outer pole shoe portion 21122 located on the yoke. The outer pole shoe portion 21122 is inserted into the tooth portion 21121 after the chain structure is rolled, thus assembling the outer pole shoe portion 21122. This improves electromagnetic performance while preventing interference between adjacent outer teeth 2112. The outer pole shoe portion 21122 and the tooth portion 21121 are assembled using a plug-in method, simplifying the assembly operation and facilitating winding. Optionally, the outer wall of the toothed part 21121 is provided with a slot, and the inner wall of the outer pole shoe part 21122 is provided with a protrusion. The outer pole shoe part 21122 and the toothed part 21121 are installed by inserting the protrusion into the slot.

[0094] Please see Figures 8 to 13 In one embodiment of this application, the stator assembly 21 further includes a stator frame 212 wrapped around the stator core 211. The stator frame 212 serves to insulate and protect the stator core 211 and the winding coils. It is understood that the first winding 213 is wound on the stator frame 212 at the location corresponding to the outer teeth 2112, and the second winding 214 is wound on the stator frame 212 at the location corresponding to the inner teeth 2111. This prevents scratches on the enameled wire during winding and also provides insulation and withstand voltage protection. Optionally, the stator assembly 21 can be an integrally packaged structure.

[0095] Specifically, the stator frame 212 includes two frame bodies respectively installed at opposite ends of the stator core 211. The frame body includes an annular bracket 2121, a plurality of first slot insulation portions 2122 and a plurality of second slot insulation portions 2123. The plurality of first slot insulation portions 2122 are spaced apart on the outer peripheral surface of the annular bracket 2121 and inserted between two adjacent external teeth 2112. The plurality of second slot insulation portions 2123 are spaced apart on the inner peripheral surface of the annular bracket 2121 and inserted between two adjacent internal teeth 2111. The first winding 213 is wound on the first slot insulation portion 2122, and the second winding 214 is wound on the second slot insulation portion 2123.

[0096] Two frame bodies are respectively disposed at both ends of the stator core 211, serving to install and fix the stator core 211. Each frame body includes an annular bracket 2121, multiple first slot insulation parts 2122, and multiple second slot insulation parts 2123. The annular bracket 2121 connects the multiple outer first slot insulation parts 2122 and the multiple inner second slot insulation parts 2123. The multiple first slot insulation parts 2122 are correspondingly inserted into the first stator slots 2112a of the stator core 211, serving to isolate the first winding 213 from the outer teeth 2112, wherein the inner cavity of the first slot insulation part 2122 allows the coil of the first winding 213 to pass through. The multiple second slot insulation parts 2123 are correspondingly inserted into the second stator slots 2111a of the stator core 211, serving to isolate the second winding 214 from the inner teeth 2111, wherein the inner cavity of the second slot insulation part 2123 allows the coil of the second winding 214 to pass through. Therefore, the stator frame 212 of this embodiment can simultaneously achieve the insulation installation of the outer teeth 2112 of the stator core 211 with the first winding 213 and the insulation installation of the inner teeth 2111 with the second winding 214, thus ensuring the insulation performance between the stator core 211 and the two windings.

[0097] During installation, the first slot insulation part 2122 and the second slot insulation part 2123 of the two frame bodies can be inserted into the corresponding first stator slot 2112a and second stator slot 2111a, covering the walls of the first stator slot 2112a and the second stator slot 2111a. At this time, the annular brackets 2121 at both ends abut against the two ends of the annular yoke of the stator core 211. Then, a coil is wound on the side of the first slot insulation part 2122 away from the slot wall of the first stator slot 2112a to form a first winding 213, and a coil is wound on the side of the second slot insulation part 2123 away from the slot wall of the second stator slot 2111a to form a second winding 214, so as to realize the fixing function of the two frame bodies, the stator core 211 and the winding coil.

[0098] In practical applications, the first slot insulating portion 2122 can have a regular or irregular shape. Optionally, the first slot insulating portion 2122 can be a cylindrical structure, a slotted structure, a tubular structure, etc. In practical applications, the second slot insulating portion 2123 can have a regular or irregular shape. Optionally, the second slot insulating portion 2123 can be a cylindrical structure, a slotted structure, a tubular structure, etc.

[0099] Optionally, the annular support 2121, the first groove insulation part 2122 and the second groove insulation part 2123 can be integrally molded structures, such as integral molding by mold, 3D printing or other molding methods.

[0100] Optionally, the two frame bodies can be a single molded structure, in which case they can be wrapped with adhesive to form a single integrated structure.

[0101] Optionally, the first slot insulation portion 2122 and the second slot insulation portion 2123 can be made of materials with good insulation properties, such as plastics, rubber, coated cloth or tubing, insulating impregnated fiber products, electrical films, composite products, and adhesive tapes. The ring-shaped bracket 2121 serves as a fixed support and also has insulation properties, so it can be made of plastic with a certain strength.

[0102] Please see Figures 8 to 13 In one embodiment of this application, the axial end face of the annular bracket 2121 is provided with a wiring groove 21211, the outer wall of the wiring groove 21211 is provided with a first wire passage 21212, and the inner wall of the wiring groove 21211 is provided with a second wire passage 21213. The first wire passage 21212 connects the wiring groove 21211 with the inner cavity of the first groove insulation part 2122, and the second wire passage 21213 connects the wiring groove 21211 with the inner cavity of the second groove insulation part 2123.

[0103] This design allows the conductor of the first winding 213, located on the radially outer side, to pass through the first wire through-hole 21212 into the wiring groove 21211 for routing; and allows the conductor of the second winding 214, located on the radially inner side, to pass through the second wire through-hole 21213 into the wiring groove 21211 for routing. This facilitates winding two independent sets of windings, simplifies the winding operation, and improves the neatness of the wiring, avoiding clutter.

[0104] As an example, when winding the outer teeth 2112 of the stator core 211, the wire can be first introduced from the outside into the wire routing groove 21211, passed through the first wire passage 21212 to wind the first outer tooth 2112, and after winding, it can be passed through the adjacent first wire passage 21212 into the wire routing groove 21211, and then the wire can be routed along the path of the wire routing groove 21211 to the next outer tooth 2112 to be wound, and then passed through the first wire passage 21212 at that location into the inner cavity of the corresponding first slot insulation part 2122 to wind the next outer tooth 2112. This process is repeated to realize the winding function of the first winding 213 inside the stator component. After the winding is completed, the lead wire of the first winding 213 is led out through the wire routing groove 21211.

[0105] Similarly, when winding the inner teeth 2111 of the stator core 211, the wire can be first introduced from the outside into the wire routing groove 21211, passed through the first second wire passage 21213 to wind the first inner tooth 2111. After winding, the wire passes through the adjacent second wire passage 21213 into the wire routing groove 21211, and then runs along the path of the wire routing groove 21211 to the next inner tooth 2111 to be wound. Then, the wire passes through the second wire passage 21213 at that location into the inner cavity of the corresponding second slot insulation part 2123 to wind the next inner tooth 2111. This process is repeated to realize the winding function of the second winding 214 on the outside of the stator component. After the winding is completed, the lead wire of the second winding 214 is led out through the wire routing groove 21211.

[0106] In practical applications, the relative positions of the first wire guide 21212 and the second wire guide 21213 can be determined according to the actual situation, for example, they can be set relative to each other or staggered. In this embodiment, considering the difficulty of the molding process, the first wire guide 21212 and the second wire guide 21213 are set relative to each other, which can simplify the design of the molding mold on the one hand, and make the stability of the skeleton body higher on the other hand.

[0107] Optionally, the wiring groove 21211 is an annular groove surrounding the center of the annular bracket 2121, which makes the wiring path of the winding coil smoother and avoids scratching the enameled wire at the corners.

[0108] In one embodiment, the stator frame 212 is an integrally formed structure.

[0109] It should be noted that the position of the stator assembly 21 installed on the housing 1 can be determined according to the actual situation. For example, it can be installed on the air cavity A side or on the water cavity B side.

[0110] Please see Figure 1 , Figure 2 , Figure 5 as well as Figure 7 In one embodiment of this application, the housing 1 includes a base 11, a volute 12, and a pump housing 13. The base 11 separates the air chamber A and the water chamber B, and the stator assembly 21 is installed on the base 11. The volute 12 is connected to one side of the base 11 and encloses it to form the air chamber A, and the first rotor 22 and the impeller 31 are disposed in the air chamber A. The pump housing 13 is connected to the other side of the base 11 and encloses it to form the water chamber B, and the second rotor 23 and the impeller 32 are disposed in the water chamber B.

[0111] When this fan and water pump assembly is running, airflow flows in air chamber A and water flow flows in water chamber B. By setting the housing 1 to include a volute 12, a base 11 and a pump housing 13, air chamber A is formed between the volute 12 and the base 11, and water chamber B is formed between the pump housing 13 and the base 11. The base 11 can separate air chamber A and water chamber B, playing a role in dry and wet separation, and preventing water from flowing into air chamber A and contacting the stator assembly 21, causing a short circuit fault.

[0112] The air chamber A is enclosed by the volute 12 and the base 11. When the volute 12 and base 11 are assembled, one end face of the base 11 can cover the opening of the volute 12, thus eliminating the need for the end face of the volute 12, which helps save materials, reduce costs, and decrease the volume of the fan-pump assembly. The water chamber B is formed by the pump housing 13 and the base 11. When the pump housing 13 and base 11 are assembled, the other end face of the base 11 can act as a cover plate for the pump housing 13, thus eliminating the need for the pump housing 13 cover plate, which also helps save materials, reduce costs, and decrease the volume of the fan-pump assembly. Optionally, the connection between the pump housing 13 and the base 11 is provided with a sealing structure to ensure the sealing performance of the water chamber B.

[0113] Understandably, the base 11 is located between the air chamber A and the water chamber B. By mounting the stator assembly 21 on the base 11, the first rotor 22 and the second rotor 23 can be positioned near the center within the casing 1. This facilitates the connection between the first rotor 22 and the impeller 31, and between the second rotor 23 and the water impeller 32, shortening the transmission distance, improving rotational stability, and making the structural layout more compact and reducing the overall size of the machine. Optionally, the stator assembly 21 is mounted on the side of the base 11 closer to the air chamber A.

[0114] The base 11 can separate the first rotor 22 and the second rotor 23, ensuring water and air separation and improving safety. In addition, the first support shaft 41 and the second support shaft 51 are respectively installed on both sides of the axial direction of the base 11, that is, the two support shafts extend from the inner cavity of the housing 1 near the middle to both sides. On the one hand, this can improve the overall dynamic balance, and on the other hand, it can shorten the length of the support shafts and reduce the axial dimension of the whole machine.

[0115] In practical applications, the volute 12, stator assembly 21, and base 11 can be installed according to the actual situation:

[0116] Optionally, please refer to Figures 1 to 3The volute 12 and stator assembly 21 are encapsulated into a single structure. In this configuration, the volute 12 and stator assembly 21 can be molded together using a Bulk Molding Compound (BMC) mold, and then installed to the base 11 by means of bonding or screwing. This simplifies the assembly process of the volute 12 and stator assembly 21 and improves assembly efficiency.

[0117] Optionally, please refer to Figures 1 to 3 The volute 12, stator assembly 21, and base 11 are encapsulated into a single structure. In this method, the base 11 and stator assembly 21 can be placed in a BMC (Bulk Molding Compound) mold to form the volute 12 while simultaneously encapsulating it into a single structure. This simplifies the assembly steps of the volute 12, stator assembly 21, and base 11, improving assembly efficiency.

[0118] Optionally, please refer to Figures 5 to 6 The stator assembly 21 and the base 11 are encapsulated into a single structure. In this method, the base 11 and stator assembly 21 can be molded into a single structure in a BMC (Bulk Molding Compound) mold, and then installed to the volute 12 by bonding or screwing. Alternatively, they can be integrally molded using potting compound, with the sealing component 215 connecting the stator assembly 21 and the base 11 into a single structure. This simplifies the assembly steps of the stator assembly 21 and the base 11, improving assembly efficiency.

[0119] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 as well as Figure 7 In one embodiment of this application, the base 11 includes an end face flange 111 and an annular bracket 112. The wind turbine 31 and the water turbine 32 are respectively disposed on opposite axial sides of the end face flange 111. The annular bracket 112 is disposed on the side of the end face flange 111 near the wind turbine 31. A partition 113 is provided inside the annular bracket 112. The partition 113 divides the inner cavity of the annular bracket 112 into a first receiving groove 101 and a second receiving groove 102 arranged axially. The first receiving groove 101 communicates with the wind cavity A, and the second receiving groove 102 communicates with the water cavity B. A first support shaft 41 is installed in the first receiving groove 101, and a second support shaft 51 is installed in the second receiving groove 102. The stator assembly 21 is disposed on the outer periphery of the annular bracket 112 corresponding to the second receiving groove 102. The second rotor 23 is installed in the second receiving groove 102, and the first rotor 22 is disposed on the periphery of the stator assembly 21 and connected to the first support shaft 41.

[0120] The end flange 111 separates the air chamber A and the water chamber B. The impeller 31 and water impeller 32 are located on opposite axial sides of the end flange 111. An annular support 112 is located at one axial end of the end flange 111. The annular support 112 extends axially outward from the side of the end flange 111 closest to the air chamber A. The outer circumference of the annular support 112 is used to mount the stator assembly 21. The inner cavity of the annular support 112 forms a first receiving groove 101 for mounting the first support shaft 41 and a second receiving groove 102 for mounting the second rotor 23 and the second support shaft 51. The partition 113 isolates the first receiving groove 101 and the second receiving groove 102. The second rotor 23 and the stator assembly 21 are located on opposite radial sides of the annular support 112. This means that the second rotor 23 and the stator assembly 21 are separated by the annular support 112, preventing water from entering the stator assembly 21 and ensuring dry and wet separation. By fitting the stator assembly 21 onto the outer periphery of the annular bracket 112 corresponding to the second receiving groove 102, the stator assembly 21 is positioned opposite the second rotor 23 within the second receiving groove 102, so that the second rotor 23 can be smoothly driven to rotate.

[0121] In this embodiment, the first receiving groove 101 and the second receiving groove 102 are spaced apart in the axial direction, and the first support shaft 41 and the second support shaft 51 are coaxially arranged. In this way, the overall dynamic balance of the first rotor 22 and the second rotor 23 during operation is effectively improved.

[0122] Furthermore, the first rotor 22 and the second rotor 23 are radially opposite each other. In the axial direction of the end face flange 111, the stator assembly 21 has a first side close to the end face flange 111 and a second side away from the end face flange 111. The first receiving groove 101 protrudes axially from the second side of the stator assembly 21, so that the first receiving groove 101 is axially offset from the stator assembly 21 and does not occupy the space on the radial inner side of the stator assembly 21. Thus, the radial dimension of the stator assembly 21 can be reduced, and the overall radial dimension of the fan and pump assembly can be reduced.

[0123] Please see Figure 1 , Figure 2 , Figure 4 as well as Figure 5 In one embodiment of this application, the first support shaft 41 is a rolling shaft that rotatably engages with the housing 1, and the first rotor 22 is fixedly connected to the first support shaft 41. This configuration enables the first rotor 22 to be rotatably mounted to the housing 1, thereby improving the rotational stability of the first rotor 22 and the impeller 31.

[0124] Optionally, the first receiving groove 101 is a bearing chamber in which a rolling bearing 42 is installed. One end of the first support shaft 41 is assembled with the rolling bearing 42, and the other end is connected to the first rotor 22, thereby realizing the function of supporting and installing the impeller 31 and the first rotor 22. Optionally, the first support shaft 41 is a metal shaft, which is interference-fitted with the inner ring of the rolling bearing 42.

[0125] To further improve rotational stability, optionally, at least two rolling bearings 42 arranged axially are provided in the first receiving groove 101. A first retaining ring 44 is provided between two adjacent rolling bearings 42, a second retaining ring 45 is provided on the outer end face of the outermost rolling bearing 42, and a wave spring 46 is provided between the innermost rolling bearing 42 and the bottom wall of the first receiving groove 101. The first support shaft 41 is simultaneously inserted into the inner rings of the multiple rolling bearings 42. In this way, the multiple rolling bearings 42 can provide stable support for the first support shaft 41, thereby ensuring the rotational stability of the first rotor 22. The wave spring 46 can reduce motor noise and vibration. Optionally, the inner wall of the first receiving groove 101 is provided with a first slot for receiving the outer edge of the first retaining ring 44. The outer circumferential surface of the first support shaft 41 is provided with a second slot for receiving the inner edge of the second retaining ring 45. This can further improve the installation reliability of the rolling bearings 42 and prevent axial movement of the bearings.

[0126] Please see Figure 1 , Figure 2 , Figure 4 as well as Figure 5 In one embodiment of this application, one end of the first support shaft 41 is installed in the first receiving groove 101, and the other end extends axially out of the first receiving groove 101 and is fixed to the first rotor 22 and / or the impeller 31; at least part of the first rotor 22 axially protrudes from the first receiving groove 101, and the impeller 31 is connected to the part of the first rotor 22 that axially protrudes from the stator assembly 21.

[0127] This design allows the impeller 31 and stator assembly 21 to be axially offset, reducing the radial dimension of the air cavity A and the overall radial dimension of the fan-pump assembly. Furthermore, when the impeller 31 rotates, the stator assembly 21 does not obstruct airflow, effectively reducing wind resistance and increasing air volume.

[0128] Please see Figure 1 , Figure 2 , Figure 4 as well as Figure 5 In one embodiment of this application, the first rotor 22 includes a rotor housing 221 and a first magnetic ring 222. The rotor housing 221 is sleeved on the periphery of the stator assembly 21, and the first magnetic ring 222 is disposed on the inner circumferential surface of the rotor housing 221 and is disposed opposite to the stator assembly 21. The impeller 31 is fixedly connected to the rotor housing 221, and the first support shaft 41 is fixed to the rotor housing 221 and / or the impeller 31.

[0129] In this embodiment, a first magnetic loop is formed between the first magnetic ring 222 and the stator assembly 21 through an air gap. During operation, the magnetic field in the first magnetic loop drives the first magnetic ring 222 to rotate, which in turn drives the rotor housing 221 and the first support shaft 41 to rotate. The impeller 31 is connected and fixed to the rotor housing 221, and the rotation of the rotor housing 221 drives the impeller 31 to rotate. During assembly, the first magnetic ring 222 can be fixed to the inner circumferential surface of the rotor housing 221 by means of adhesive or fastener connection. One end of the first support shaft 41 is connected to the rolling bearing 42 in the first receiving groove 101, and the other end of the first support shaft 41 can be connected and fixed to the rotor housing 221 by means of fastener connection or interference fit. The rolling bearing 42 can provide stable support for the first rotor 22 to ensure the stability of the rotation of the first rotor 22.

[0130] In practical applications, the impeller 31 and the rotor housing 221 can be integrally formed. This simplifies the installation structure of the impeller 31 and ensures the reliability of the connection between the impeller 31 and the rotor housing 221, thereby ensuring the stability of the impeller 31's operation. Of course, in other embodiments, the separate structures can also be assembled and fixed into one piece.

[0131] Please see Figure 1 and Figure 2 In one embodiment, the rotor housing 221 includes a first cylindrical portion 2211, a second cylindrical portion 2212, and a third cylindrical portion 2213 connected sequentially in a stepped manner along the axial direction. A first stepped surface is formed between the first cylindrical portion 2211 and the second cylindrical portion 2212, and a second stepped surface is formed between the second cylindrical portion 2212 and the third cylindrical portion 2213. The first cylindrical portion 2211 is correspondingly sleeved on the periphery of the stator assembly 21, and a first magnetic ring 222 is disposed on the inner circumferential surface of the first cylindrical portion 2211. The second cylindrical portion 2212 is correspondingly sleeved on the periphery of the first receiving groove 101, and the third cylindrical portion 2213 is located on the side of the first receiving groove 101 opposite to the second receiving groove 102. One end of the impeller 31 is sleeved on the outside of the second cylindrical portion 2212 and the third cylindrical portion 2213, and abuts against and limits the first stepped surface and the second stepped surface. The end of the first support shaft 41 opposite to the rolling bearing 42 passes through the third cylindrical portion 2213 and is fixed to the impeller 31 by a locking member 43.

[0132] In this embodiment, the rotor housing 221 is configured to include a first cylindrical portion 2211, a second cylindrical portion 2212, and a third cylindrical portion 2213 connected in a stepped manner. The first cylindrical portion 2211 is sleeved around the stator assembly 21, and a first magnetic ring 222 is installed on its inner circumferential surface, so that the first magnetic ring 222 can be opposite to the stator assembly 21 to form a magnetic circuit, thereby driving the rotor housing 221 and the impeller 31 to rotate. The second cylindrical portion 2212 is correspondingly sleeved around the first receiving groove 101, connecting the first cylindrical portion 2211 and the third cylindrical portion 2213, and playing a role in connection and reinforcement, which can improve the overall structural strength of the rotor housing 221. The third cylindrical portion 2213 is located on the side of the first receiving groove 101 away from the second receiving groove 102, and is used for the first support shaft 41 to pass through and be installed, playing a role in connecting and fixing with the first support shaft 41. Understandably, the diameters of the first cylindrical section 2211, the second cylindrical section 2212, and the third cylindrical section 2213 decrease sequentially, forming a first stepped surface between the first cylindrical section 2211 and the second cylindrical section 2212, and a second stepped surface between the second cylindrical section 2212 and the third cylindrical section 2213. When assembled with the impeller 31, the first and second stepped surfaces act as a restraining and limiting surface for the impeller 31, improving the installation reliability of the impeller 31 and the rotor housing 221, and further enhancing rotational reliability. Furthermore, the sequentially decreasing diameters of the first cylindrical section 2211, the second cylindrical section 2212, and the third cylindrical section 2213 reduce the space occupied by the rotor housing 221 inside the impeller 31. The third cylindrical section 2213, located closest to the air inlet side of the impeller 31, has the smallest diameter, thus obstructing the airflow into the impeller 31 less, thereby reducing wind resistance, increasing airflow, and improving the efficiency of the impeller 31.

[0133] The end of the first support shaft 41 facing away from the rolling bearing 42 passes through the third cylindrical section 2213 and is fixed to the impeller 31 by a locking member 43. Optionally, the locking member 43 is a nut. The end of the first support shaft 41 facing away from the rolling bearing 42 is provided with an external thread. The first support shaft 41 and the rotor housing 221 are fixedly assembled by the engagement of the nut and the external thread. Optionally, a washer is provided between the nut and the rotor housing 221. Optionally, a third retaining ring 47 is provided on the side of the rotor housing 221 facing away from the nut. Correspondingly, the first support shaft 41 is provided with a third groove for accommodating the third retaining ring 47. This can further improve the connection reliability between the rotor housing 221 and the first support shaft 41.

[0134] Please see Figure 1 and Figure 2 In one embodiment of this application, the outer diameter of the stator assembly 21 is greater than the outer diameter of the second cylindrical portion 2212, and the outer diameter of the stator assembly 21 is smaller than the outer diameter of the impeller 31.

[0135] This design ensures, on the one hand, that there is a sufficiently strong magnetic force between the outer teeth 2112 of the stator assembly 21 and the first magnetic ring 222 on the inner wall of the first cylindrical part 2211, so that the rotor housing 221 can be reliably driven to rotate by the stator assembly 21, thereby improving operational stability; on the other hand, it allows the impeller 31 to have a sufficiently large outer diameter, reducing wind resistance and increasing wind power.

[0136] Please see Figure 1 and Figure 2 In one embodiment of this application, the outer diameter of the first rotor 22 is smaller than the outer diameter of the wind turbine 31. It is understood that the outer diameter of the first cylindrical portion 2211 is smaller than the outer diameter of the wind turbine 31. This design allows the wind turbine 31 to have a sufficiently large outer diameter, reducing wind resistance and increasing wind power.

[0137] In one embodiment of this application, the portion of the first rotor 22 used for mounting the impeller 31 is defined as the mounting portion (not shown in the figure). The outer periphery of the mounting portion gradually expands in a trumpet shape from the end furthest from the end face flange 111 to the portion near the stator assembly 21. This design allows the trumpet-shaped mounting portion to guide the airflow on the A side of the air chamber, further reducing wind resistance and increasing air volume.

[0138] Please see Figure 1 , Figure 2 , Figure 4 as well as Figure 5 In one embodiment of this application, the second support shaft 51 is a fixed shaft fixed to the housing 1, and the second rotor 23 is slidably fitted onto the second support shaft 51. With this configuration, the second support shaft 51 can support the second rotor 23 and the water wheel 32, improving the installation reliability and operational stability of the second rotor 23 and the water wheel 32. It is understood that when the water wheel 32 rotates, it may carry water into the second receiving groove 102. Optionally, the second support shaft 51 can be made of ceramic, which has good wear resistance and corrosion resistance. Furthermore, the water entering the second receiving groove 102 will also lubricate the second support shaft 51, ensuring the rotational stability of the second rotor 23.

[0139] Optionally, the partition 113 is provided with a first mounting hole 103, and the pump housing 13 is provided with a second mounting hole 131 opposite to the first mounting hole 103. Both ends of the second support shaft 51 are respectively inserted into the second mounting hole 131 and the first mounting hole 103. This design ensures that both ends of the second support shaft 51 are supported and fixed. Compared to a cantilever design, this embodiment can improve the support strength of the second support shaft 51 and enhance the installation stability of the second rotor 23. Optionally, the second support shaft 51 is interference-fitted with the first mounting hole 103; alternatively, the second support shaft 51 is interference-fitted with the second mounting hole 131.

[0140] Furthermore, two washers 52 are fitted onto the second support shaft 51, and the second rotor 23 is fitted onto the outer circumference of the second support shaft 51, with the two washers 52 positioned on opposite sides of the second rotor 23. This design reduces the frictional force caused by the axial movement of the second rotor 23. During assembly, one washer 52 can be installed on the second support shaft 51 first, then the second rotor 23 can be fitted onto the second support shaft 51, followed by the installation of the second washer 52, and finally the pump casing 13 can be closed to achieve pump-side installation.

[0141] Optionally, considering the aquatic environment, the gasket 52 in this embodiment can be a ceramic gasket 52, which has good wear resistance and corrosion resistance.

[0142] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 as well as Figure 14 In one embodiment, the second rotor 23 includes a bushing 231, a second rotating shaft 232, and a second magnetic ring 233, which are sequentially sleeved on the second support shaft 51 from the inside out. The second magnetic ring 233 is disposed opposite to the inner peripheral wall of the stator assembly 21, and the second rotating shaft 232 is connected to the water wheel 32.

[0143] In this embodiment, the second support shaft 51 is fixed relative to the base 11 and the pump housing 13. The bushing 231 is rotatably fitted around the second support shaft 51. The second rotating shaft 232 is fixed around the bushing 231. The second magnetic ring 233 is fixed around the second rotating shaft 232. The second magnetic ring 233 and the stator assembly 21 form a second magnetic circuit through an air gap. During operation, the magnetic field in the second magnetic circuit drives the second magnetic ring 233 to rotate, which in turn drives the second rotating shaft 232 to rotate. The second rotating shaft 232 then drives the water turbine 32 to rotate, thereby realizing the water pump function.

[0144] Optionally, the bushing 231 can be made of graphite, which has good wear resistance and corrosion resistance, and can reduce the friction between the bushing 231 and the second support shaft 51.

[0145] In one embodiment, the second rotating shaft 232 and the water wheel 32 are integrally formed. For example, the second rotating shaft 232 and the water wheel 32 can be integrally formed by injection molding. This simplifies the installation structure of the water wheel 32 and ensures the reliability of the connection between the water wheel 32 and the second rotating shaft 232, thereby ensuring the stability of the water wheel 32's operation. Of course, in other embodiments, the water wheel 32 and the second rotating shaft 232 can also be assembled and fixed by means of snap-fit ​​connection, threaded connection, etc. It is worth noting that when the water wheel 32 is composed of multiple parts, the second rotating shaft 232 can be integrally formed with one part of the water wheel 32.

[0146] To ensure the overall stability of the second rotor 23, the bushing 231, the second shaft 232, and the second magnetic ring 233 can optionally be injection molded into a single unit. It is understood that when the materials of the bushing 231, the second shaft 232, and the second magnetic ring 233 are different, they can be injection molded together as a single unit using insert injection molding.

[0147] This utility model also proposes a water heater, which includes a flue system, a water circuit system, and a fan and pump assembly. The specific structure of the fan and pump assembly is as described in the above embodiments. Since this water heater adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The fan and pump assembly is connected to both the flue system and the water circuit system. The impeller 31 is used to drive the airflow along the flue system, and the water impeller 32 is used to drive the water flow along the water circuit system.

[0148] Taking a gas water heater as an example, the water heater includes a burner, a combustion chamber housing, a heat exchanger, and a fume hood arranged sequentially. The heat exchanger is connected to an inlet pipe and an outlet pipe. The flue gas flow channel between the burner and the fume hood constitutes a flue gas system, and the inlet pipe is connected to the outlet pipe via the heat exchanger to form a water outlet system. The impeller 31 can be connected to either the inlet or outlet end of the flue gas system; the water impeller 32 can be connected in series with either the inlet or outlet pipe. For example, when this fan and pump assembly is applied to a forced-draft gas water heater, the air outlet of the impeller 31 can be connected to the burner (i.e., the impeller 31 is connected to the inlet end of the flue system). In this case, the impeller 31 can function as a forced-draft fan, driving the high-temperature flue gas generated by the burner through the combustion chamber to the heat exchanger for heat exchange, and driving the flue gas after heat exchange to be collected by the fume hood and discharged outside the water heater. On the other hand, the impeller 31 can also be used to deliver air into the burner to supplement the secondary air required for combustion. As another example, when this fan and pump assembly is applied to a forced-extraction gas water heater, the air inlet of the impeller 31 can be connected to the fume hood (i.e., the impeller 31 is connected to the outlet end of the flue system). In this case, the impeller 31 can function as a forced-extraction fan, drawing the high-temperature flue gas generated by the burner towards the fume hood, and finally discharging it outside the water heater through the air outlet of the impeller 31. The water turbine 32 can be connected in series in a water system to increase water pressure and flow, thus functioning as a water pump.

[0149] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A fan and water pump assembly, characterized in that, include: The housing has a mutually separated air cavity and water cavity, and the housing is provided with a first support shaft and a second support shaft corresponding to the air cavity and the water cavity, respectively; A drive unit is mounted on the housing and has a first output terminal and a second output terminal that can output independently of each other; The impeller is driven and connected to the first output end, and is mounted to the housing via the first support shaft; as well as The water turbine is driven and connected to the second output end, and is mounted to the housing via the second support shaft.

2. The fan and water pump assembly as described in claim 1, characterized in that, The driving device includes: Stator assembly, mounted on the housing; The first rotor rotates in conjunction with the stator assembly and is configured to connect the first output end to the wind turbine drive; and The second rotor rotates in conjunction with the stator assembly and is configured to connect the second output end to the water turbine drive; the first rotor and the second rotor are configured to rotate independently of each other.

3. The fan and water pump assembly as described in claim 2, characterized in that, The housing includes: A base separates the air cavity and the water cavity, and the stator assembly is mounted on the base; A volute, connected to and enclosing one side of the base to form the air cavity, wherein the first rotor and the impeller are disposed within the air cavity; and The pump casing is connected to and encloses the other side of the base to form the water cavity, and the second rotor and the water wheel are disposed in the water cavity.

4. The fan and water pump assembly as described in claim 3, characterized in that, The base includes: An end face flange, wherein the wind turbine and the water turbine are respectively located on opposite axial sides of the end face flange; and An annular support is provided at one end of the end face flange near the impeller. A partition is provided inside the annular support, which divides the inner cavity of the annular support into a first receiving groove and a second receiving groove arranged along the axial direction. The first receiving groove communicates with the air cavity, and the second receiving groove communicates with the water cavity. A first support shaft is installed in the first receiving groove, and a second support shaft is installed in the second receiving groove. The stator assembly is located on the periphery of the annular bracket corresponding to the second receiving groove, the second rotor is installed in the second receiving groove, and the first rotor is located on the periphery of the stator assembly and connected to the first support shaft.

5. The fan and water pump assembly as described in claim 4, characterized in that, In the axial direction of the end face flange, the stator assembly has a first side close to the end face flange and a second side away from the end face flange, and the first receiving groove protrudes axially from the second side of the stator assembly.

6. The fan and water pump assembly as described in claim 5, characterized in that, The first rotor includes: The rotor housing includes a first cylindrical section, a second cylindrical section, and a third cylindrical section connected sequentially in a stepped manner along the axial direction. The first cylindrical section is correspondingly sleeved around the stator assembly, the second cylindrical section is correspondingly sleeved around the first receiving groove, and the third cylindrical section is located on the side of the first receiving groove that is axially opposite to the second receiving groove. The impeller is mounted outside the second and third cylindrical sections. The first support shaft passes through the third cylindrical section and is fixed to the impeller by a locking member. The first magnetic ring is disposed on the inner circumferential surface of the first cylindrical portion.

7. The fan and water pump assembly as described in claim 6, characterized in that, The outer diameter of the stator assembly is greater than the outer diameter of the second cylindrical section, and the outer diameter of the stator assembly is smaller than the outer diameter of the wind turbine.

8. The fan and water pump assembly as described in claim 6, characterized in that, The outer diameter of the first rotor is smaller than the outer diameter of the wind turbine.

9. The fan and water pump assembly as described in claim 5, characterized in that, The impeller is located on the side of the stator assembly away from the end face flange. The part of the first rotor used to install the impeller is defined as the mounting part. The outer periphery of the mounting part gradually expands in a trumpet shape from the end away from the end face flange to the side close to the stator assembly.

10. The fan and pump assembly as described in any one of claims 4 to 9, characterized in that, The second rotor includes a bushing, a second rotating shaft, and a second magnetic ring, which are sequentially sleeved outside the second support shaft from the inside out. The second magnetic ring is disposed opposite to the inner peripheral wall of the stator assembly, and the second rotating shaft is connected to the water turbine.

11. The fan and pump assembly as described in any one of claims 1 to 9, characterized in that, The first support shaft is a rolling shaft that rotates with the housing, and the impeller is fixedly connected to the first support shaft; And / or, the second support shaft is a fixed shaft fixed to the housing, and the water wheel is slidably engaged with the second support shaft.

12. The fan and water pump assembly as described in claim 11, characterized in that, The first support shaft is a metal shaft; and / or the second support shaft is a ceramic shaft.

13. The fan and pump assembly as described in any one of claims 3 to 9, characterized in that, The volute and the stator assembly are encapsulated into a single structure. Alternatively, the volute, the stator assembly, and the base can be packaged into a single structure. Alternatively, the stator assembly and the base are packaged into a single structure.

14. The fan and pump assembly as described in any one of claims 2 to 9, characterized in that, The stator assembly includes: The stator core has internal teeth and external teeth respectively disposed on both radial sides thereon. The second rotor is disposed on the inner side of the stator core and is opposite to the internal teeth. The first rotor is disposed on the outer side of the stator core and is opposite to the external teeth. A first winding is wound around the external teeth and drives the first rotor; and The second winding is wound on the internal teeth and drives the second rotor. The second winding and the first winding are configured to be independently controllable.

15. The fan and water pump assembly as described in claim 14, characterized in that, The stator core is an integral structure; Alternatively, the stator core is a chain structure formed by connecting multiple core sections end to end. Each core section has a yoke and internal and external teeth respectively located on the inner and outer sides of the yoke. The multiple yoke sections are rolled up to form an annular yoke.

16. The fan and pump assembly as described in claim 14, characterized in that, The stator assembly further includes a stator frame, which includes an annular support, a plurality of first slot insulating portions and a plurality of second slot insulating portions. The plurality of first slot insulating portions are spaced apart on the outer peripheral surface of the annular support and inserted between two adjacent external teeth. The plurality of second slot insulating portions are spaced apart on the inner peripheral surface of the annular support and inserted between two adjacent internal teeth. The first winding is wound on the first slot insulation portion, and the second winding is wound on the second slot insulation portion.

17. The fan and pump assembly as described in claim 16, characterized in that, The axial end face of the annular bracket is provided with a wiring groove. The outer wall of the wiring groove is provided with a first wire passage opening, and the inner wall of the wiring groove is provided with a second wire passage opening. The first wire passage opening connects the wiring groove with the inner cavity of the first groove insulation part, and the second wire passage opening connects the wiring groove with the inner cavity of the second groove insulation part.

18. A water heater, characterized in that, include: Flue system; A water system is used for heat exchange with the flue system; as well as The fan and water pump assembly as described in any one of claims 1 to 17, wherein the fan and water pump assembly is connected to both the flue system and the water system, the fan wheel is used to drive airflow along the flue system, and the water wheel is used to drive water flow along the water system.

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