Fan and water pump assembly and gas water-heating device

Abstract

A fan and water pump assembly (100) and a gas water-heating device (1000). The fan and water pump assembly (100) comprises: a driving apparatus (10) having a first output end (101) and a second output end (102) which are used for outputting torque, wherein the first output end (101) is drivingly connected to a fan wheel (20), and the second output end (102) is drivingly connected to a pump wheel (30); a volute (40) connected to the driving apparatus (10), wherein the volute (40) and the driving apparatus (10) jointly define a fan cavity (401) for accommodating the fan wheel (20), the fan cavity (401) is provided with an air inlet (402) and an air outlet (403), and the fan wheel (20) rotates to drive a gas-phase fluid in the fan cavity (401) to flow from the air inlet (402) to the air outlet (403); and a pump housing (50) connected to the driving apparatus (10), wherein the pump housing (50) and the driving apparatus (10) jointly define a pump cavity (501) for accommodating the pump wheel (30), the pump cavity (501) is provided with a liquid inlet (502) and a liquid outlet (503), and the pump wheel (30) rotates to drive a liquid-phase fluid in the pump cavity (501) to flow from the liquid inlet (502) to the liquid outlet (503).

Description

Fan and pump assembly and gas water heating equipment

[0001] This application claims priority to Chinese Patent Application No. 202422171608.2, filed on September 3, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of gas water heating equipment, in particular to a fan and pump assembly and gas water heating equipment. BACKGROUND

[0003] Fans and pumps are common components in industry for providing power for fluid transportation. For example, in a gas water heating equipment, a fan is usually provided for driving the flow of gas phase fluid, and a pump is usually provided for driving the flow of liquid phase fluid. However, the fan and the pump are usually provided independently, and a set of driving devices needs to be configured respectively, which is relatively high in cost. In addition, the fan and the pump are provided separately, which is not compact in structure and occupies a large installation space. TECHNICAL PROBLEM

[0004] The main purpose of the present application is to provide a fan and pump assembly and gas water heating equipment, which can integrate the functions of the fan and the pump, reduce the cost, improve the compactness of the structure, reduce the volume, and save the installation space. TECHNICAL SOLUTION

[0005] To achieve the above-mentioned purpose, the fan and pump assembly provided by the present application comprises a driving device, a volute, and a pump housing.

[0006] In an embodiment, the driving device has a first output end and a second output end for outputting torque, the first output end is drivingly connected with a fan wheel, and the second output end is drivingly connected with a pump wheel.

[0007] In an embodiment, the volute is connected with the driving device, the volute and the driving device jointly enclose a fan cavity for accommodating the fan wheel, the fan cavity has an air inlet and an air outlet, and the fan wheel rotates to drive the gas phase fluid in the fan cavity to flow from the air inlet to the air outlet.

[0008] In an embodiment, the pump housing is connected with the driving device, the pump housing and the driving device jointly enclose a pump cavity for accommodating the pump wheel, the pump cavity has a liquid inlet and a liquid outlet, and the pump wheel rotates to drive the liquid phase fluid in the pump cavity to flow from the liquid inlet to the liquid outlet.

[0009] In an embodiment, the first output end and the second output end are configured to independently output torque to drive the fan wheel and the pump wheel to rotate independently.

[0010] In an embodiment, the first output end and the second output end are configured to output torque synchronously so as to rotate the impeller and the pump wheel synchronously.

[0011] In an embodiment, the impeller rotates at a speed of n1 and the pump wheel rotates at a speed of n2, wherein the ratio of n1 to n2 is a constant.

[0012] In an embodiment, the impeller is a centrifugal impeller; and / or, the impeller comprises at least two layers of blades arranged along the axial direction.

[0013] In an embodiment, the driving device comprises a housing and a driving assembly arranged in the housing, the driving assembly has the first output end and the second output end, the housing has a first end surface and a second end surface opposite to each other along the axial direction of the impeller, the volute and the first end surface jointly define the fan cavity, and the pump housing and the second end surface jointly define the pump cavity.

[0014] In an embodiment, the first output end penetrates through the first end surface to be directly connected with the impeller, and the second output end is connected with the pump wheel through a non-contact transmission assembly.

[0015] In an embodiment, the driving assembly comprises a stator, a first rotor and a second rotor, the first rotor defines the first output end, the second rotor defines the second output end, the stator and the first rotor jointly define a first magnetic circuit to drive the first rotor to rotate, and the stator and the second rotor jointly define a second magnetic circuit to drive the second rotor to rotate.

[0016] In an embodiment, the driving assembly comprises a rotor, a stator and an output shaft, the rotor is sleeved on the periphery of the output shaft and can drive the output shaft to rotate together, the output shaft has the first output end and the second output end at two ends thereof, the impeller and the pump wheel are connected to the two ends of the output shaft respectively, and the stator is sleeved on the periphery of the rotor and defines a magnetic circuit with the rotor to drive the rotor to rotate.

[0017] In an embodiment, the housing comprises an end plate and a housing body arranged on one side of the end plate, the end plate protrudes from the peripheral surface of the housing body, the driving assembly is mounted in the housing body, the side of the end plate away from the housing body defines the first end surface, the side of the housing body away from the end plate defines the second end surface, the volute has an opening facing the end plate, the end plate covers the opening, the volute is provided with the air inlet on the side away from the end plate, and the volute is provided with the air outlet on the peripheral side.

[0018] In an embodiment, the end plate is integrally formed with the shell body; and / or, a side of the end plate away from the first end face is provided with a protruding rib.

[0019] The application also provides a gas water heating device, comprising:

[0020] a main body having a gas path system and a water path system; and

[0021] a fan water pump assembly as described above is installed on the main body, a fan cavity of the fan water pump assembly is communicated with the gas path system, and a pump cavity of the fan water pump assembly is communicated with the water path system. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on the drawings shown.

[0023] Fig. 1 is a structural schematic diagram of an embodiment of a fan water pump assembly provided by the present application;

[0024] Fig. 2 is a structural schematic diagram of the fan water pump assembly in Fig. 1 from another perspective;

[0025] Fig. 3 is an exploded structural schematic diagram of the fan water pump assembly in Fig. 1;

[0026] Fig. 4 is a cross-sectional structural schematic diagram of an embodiment of a fan water pump assembly provided by the present application;

[0027] Fig. 5 is a cross-sectional structural schematic diagram of another embodiment of a fan water pump assembly provided by the present application;

[0028] Fig. 6 is a structural schematic diagram of an embodiment of a gas water heating device provided by the present application.

[0029] Explanation of reference numerals:

[0030] 1000, gas water heating device;

[0031] 100, fan and pump assembly; 10, driving device; 101, first output end; 102, second output end; 11, casing; 111, end plate; 112, casing body; 113, convex rib; 12, driving assembly; 120, rotor; 121, stator; 122, first rotor; 1221, rotor casing; 1222, first rotating shaft; 1223, first magnetic ring; 123, second rotor; 1231, shaft sleeve; 1232, second rotating shaft; 1233, second magnetic ring; 124, shielding cover; 125, fixed shaft; 126, bearing; 127, output shaft; 20, fan wheel; 30, pump wheel; 40, volute; 401, fan cavity; 402, air inlet; 403, air outlet; 50, pump casing; 501, pump cavity; 502, liquid inlet; 503, liquid outlet; 200, main body.

[0032] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Embodiment of the present application

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0035] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel solutions are included, for example, "A and / or B" includes A solution, or B solution, or A and B solutions are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection claimed by the present application.

[0036] Fan and water pump are common components in industry for providing power for fluid delivery. For example, in a gas water heating device, a fan is usually provided for driving gas phase fluid flow, and a water pump is usually provided for driving liquid phase fluid flow. However, the fan and the water pump are usually provided independently, and a set of driving device is required for each of them, which is high in cost. Moreover, the fan and the water pump are provided separately, which is not compact in structure and occupies a large installation space.

[0037] The present application provides a fan and water pump assembly 100, which integrates the functions of fan and water pump, reduces cost, improves compactness, reduces volume and saves installation space.

[0038] Please refer to FIG. 1 to FIG. 4. In an embodiment of the present application, the fan and water pump assembly 100 comprises a driving device 10, a volute 40 and a pump shell 50. The driving device 10 has a first output end 101 and a second output end 102 for outputting torque, the first output end 101 is drivingly connected with a fan wheel 20, and the second output end 102 is drivingly connected with a pump wheel 30. The volute 40 is connected with the driving device 10, and the volute 40 and the driving device 10 jointly define a fan cavity 401 for accommodating the fan wheel 20, the fan cavity 401 has an air inlet 402 and an air outlet 403, and the fan wheel 20 rotates to drive the gas phase fluid in the fan cavity 401 to flow from the air inlet 402 to the air outlet 403. The pump shell 50 is connected with the driving device 10, and the pump shell 50 and the driving device 10 jointly define a pump cavity 501 for accommodating the pump wheel 30, the pump cavity 501 has a liquid inlet 502 and a liquid outlet 503, and the pump wheel 30 rotates to drive the liquid phase fluid in the pump cavity 501 to flow from the liquid inlet 502 to the liquid outlet 503.

[0039] In the embodiment, the driving device 10 has at least the first output end 101 and the second output end 102 capable of outputting torque, wherein the first output end 101 and the second output end 102 can be configured to synchronously output torque, or can be configured to independently output torque. The first output end 101 can be directly drivingly connected with the fan wheel 20, or the first output end 101 and the fan wheel 20 can be indirectly drivingly connected through a transmission structure. The second output end 102 can be directly drivingly connected with the pump wheel 30, or the second output end 102 and the pump wheel 30 can be indirectly drivingly connected through a transmission structure. The first output end 101 and the fan wheel 20 can adopt contact type power transmission or non-contact type power transmission. The second output end 102 and the pump wheel 30 can adopt contact type power transmission or non-contact type power transmission. The fan cavity 401 has the air inlet 402 and the air outlet 403, and the pump cavity 501 has the liquid inlet 502 and the liquid outlet 503, wherein the number of the air inlet 402, the air outlet 403, the liquid inlet 502 and the liquid outlet 503 can be one, two or more.

[0040] The driving device 10 generates power when working, outputs torque through the first output end 101 to transmit power to the wind wheel 20, and drives the wind wheel 20 to rotate at a certain speed. When the wind wheel 20 rotates, it can do work on the gas-phase fluid in the fan cavity 401 to drive the gas-phase fluid to flow from the air inlet 402 to the air outlet 403 at a preset flow rate, thereby realizing the function of the fan; the second output end 102 outputs torque to transmit power to the pump wheel 30, and drives the pump wheel 30 to rotate at a certain speed. When the pump wheel 30 rotates, it can do work on the liquid-phase fluid in the pump cavity 501 to drive the liquid-phase fluid to flow from the liquid inlet 502 to the liquid outlet 503 at a preset flow rate, thereby realizing the function of the water pump. Among them, the fan cavity 401 is formed by the volute 40 and the driving device 10 together, that is, the volute 40 has an opening towards the driving device 10, and when the volute 40 and the driving device 10 are assembled in place, one side end surface of the driving device 10 can act as a cover plate of the volute 40 to cover the opening of the volute 40, so that the cover plate of the volute 40 can be omitted, thereby saving materials, reducing costs, and reducing the volume of the fan and pump assembly 100. The pump cavity 501 is formed by the pump shell 50 and the driving device 10 together, that is, the pump shell 50 has an opening towards the driving device 10, and when the pump shell 50 and the driving device 10 are assembled in place, the other side end surface of the driving device 10 can act as a cover plate of the pump shell 50 to cover the opening of the pump shell 50, so that the cover plate of the pump shell 50 can be omitted, thereby saving materials, reducing costs, and reducing the volume of the fan and pump assembly 100. In an embodiment, the connection part of the pump shell 50 and the driving device 10 is provided with a sealing structure to ensure the sealing performance of the pump cavity 501. Among them, the driving device 10 includes but is not limited to a double-rotor single-stator 121 motor, a double-rotor double-stator 121 motor, etc.

[0041] As shown in FIG. 6, the fan water pump assembly 100 can be applied to a gas water heating device 1000, wherein the gas water heating device 1000 includes but is not limited to a gas water heater, a gas heating stove, etc. The gas water heating device 1000 includes a main body 200 and the fan water pump assembly 100 installed on the main body 200, the main body 200 has a gas path system for the flow of gas (for example, gas or high-temperature flue gas generated after combustion), and a water path system for the flow of liquid. The fan cavity 401 of the fan water pump assembly 100 can be in communication with the gas path system, and the pump cavity 501 of the fan water pump assembly 100 can be in communication with the water path system. When the fan water pump assembly 100 works, the fan wheel 20 rotates to do work on the gas in the fan cavity 401 to realize the fan function, thereby being able to drive the gas to flow along the gas path system, and the pump wheel 30 rotates to do work on the liquid in the pump cavity 501 to realize the water pump function, thereby being able to drive the liquid to flow along the water path system. Among them, the gas water heating device 1000 can be a strong drum type gas water heating device 1000, or a strong suction type gas water heating device 1000. In the strong drum type gas water heating device 1000, the air outlet 403 of the fan cavity 401 can be communicated with the inlet end of the gas path system to realize the function of the air blower; in the strong suction type gas water heating device 1000, the air inlet 402 of the fan cavity 401 can be communicated with the outlet end of the gas path system to realize the function of the air blower.

[0042] The fan water pump assembly 100 of the technical scheme of the present application drives the fan wheel 20 to rotate through the first output end 101 of the driving device 10, and when the fan wheel 20 rotates, it can do work on the gas phase fluid in the fan cavity 401 to drive the gas phase fluid to flow from the air inlet 402 to the air outlet 403 at a preset flow rate, thereby realizing the function of the fan; the pump wheel 30 is driven to rotate by the second output end 102 of the driving device 10, and when the pump wheel 30 rotates, it can do work on the liquid phase fluid in the pump cavity 501 to drive the liquid phase fluid to flow from the liquid inlet 502 to the liquid outlet 503 at a preset flow rate, thereby realizing the function of the water pump; in this way, the functions of the fan and the water pump can be integrated, the fan wheel 20 and the pump wheel 30 share a set of driving device 10, which can reduce costs, and compared with the fan and the water pump arranged separately, the overall structure of the fan water pump assembly 100 is more compact, the integration degree is higher, and the overall volume is smaller, which can save installation space. In addition, the fan cavity 401 is formed by the volute 40 and the driving device 10, which can save the volute 40 cover, and the pump cavity 501 is formed by the pump shell 50 and the driving device 10, which can save the pump shell 50 cover, which is beneficial to save materials, thereby being beneficial to further reduce costs, reduce the volume of the fan water pump assembly 100, and save installation space. In addition, the fan water pump assembly 100 shares a set of driving device 10, which can cool the driving device 10 when the pump cavity 501 passes cold water, which is beneficial to reduce the temperature rise of the driving device 10 and improve the service life.

[0043] When the fan and water pump assembly 100 is applied to the gas water heater 1000, only one set of driving device 10 is needed to realize the functions of fan and water pump, which can reduce the cost of the gas water heater 1000; and the integration of the fan and water pump assembly 100 is higher, the number of driving devices 10 is reduced, the internal installation space of the gas water heater 1000 can be saved, which is beneficial to reduce the volume of the gas water heater 1000 and make more installation space inside the gas water heater 1000 available for installation of other expansion function modules. When assembling the gas water heater 1000, the fan and water pump assembly 100 only needs to be installed on the main body 200 once, which can simplify the installation steps and improve the assembly efficiency of the gas water heater 1000.

[0044] In an embodiment, the first output end 101 and the second output end 102 are configured to independently output torque to drive the fan wheel 20 and the pump wheel 30 to rotate independently.

[0045] In the embodiment, the first output end 101 and the second output end 102 are configured to be able to independently output torque to each other, that is, the torque output by the first output end 101 and the second output end 102 is independent of each other and does not interfere with each other. For example, the first output end 101 and the second output end 102 can output the same size of torque, or different sizes of torque; for example, the first output end 101 and the second output end 102 can output torque at the same time, or one of them outputs torque and the other does not work. It can be understood that the torque output by the first output end 101 and the second output end 102 is independent of each other, so that the fan wheel 20 and the pump wheel 30 can operate independently of each other, for example, the fan wheel 20 and the pump wheel 30 can rotate synchronously or asynchronously, for example, the rotating speeds of the fan wheel 20 and the pump wheel 30 can be the same or different; in this way, it can better adapt to different working conditions.

[0046] In an embodiment, the first output end 101 and the second output end 102 are configured to synchronously output torque to make the fan wheel 20 and the pump wheel 30 rotate synchronously. In this way, when the fan and water pump assembly 100 is running, the driving device 10 can drive the fan wheel 20 and the pump wheel 30 to rotate at the same speed at the same time to realize the functions of fan and water pump.

[0047] In an embodiment, the rotating speed of the fan wheel 20 is n1, and the rotating speed of the pump wheel 30 is n2, wherein the ratio of n1 and n2 is a fixed constant. In this way, the rotating speed ratio of the fan wheel 20 and the pump wheel 30 is always fixed to better adapt to specific application scenarios. The fixed constant can be set according to actual application scenarios, for example, it can be 1, 2, 3, etc., which is not limited here.

[0048] In an embodiment, the wind wheel 20 is a centrifugal wind wheel 20, which can provide relatively large air volume and wind force with lower energy consumption, is more energy-saving, has stable structure, and generates less noise. In an embodiment, the wind wheel 20 includes at least two layers of impellers arranged in the axial direction. The wind wheel 20 with at least two layers of impellers is beneficial to improve aerodynamic performance, reduce noise, and improve working efficiency. In an embodiment, the wind wheel 20 is a centrifugal wind wheel 20 with at least two layers of impellers.

[0049] On the basis of the above-mentioned embodiments, as shown in FIG. 4, in an embodiment, the driving device 10 includes a casing 11 and a driving assembly 12 arranged in the casing 11, the driving assembly 12 has a first output end 101 and a second output end 102, the casing 11 has a first end face and a second end face opposite to each other in the axial direction of the wind wheel 20, the volute 40 and the first end face jointly define a fan cavity 401, and the pump shell 50 and the second end face jointly define a pump cavity 501.

[0050] In the embodiment, the volute 40 and the pump shell 50 are respectively arranged on the opposite two end faces of the driving assembly 12, so that the fan cavity 401 and the pump cavity 501 are respectively located on the opposite two sides of the driving assembly 12, the overall structure is more compact, and the two output ends of the driving assembly 12 can be respectively driven and matched with the wind wheel 20 and the pump wheel 30.

[0051] In an embodiment, the first output end 101 penetrates through the first end face to be directly drivingly connected with the wind wheel 20, and the second output end 102 and the pump wheel 30 are connected through a non-contact transmission assembly.

[0052] Considering that the wind wheel 20 is larger in size and heavier than the pump wheel 30, in an embodiment, the first output end 101 penetrates through the first end face to be directly drivingly connected with the wind wheel 20, so that the wind wheel 20 can be directly driven to rotate by the first output end 101, power transmission can be more stable, and rotation of the wind wheel 20 is more stable and reliable. In addition, considering that the pump wheel 30 will be in contact with liquid in the pump cavity 501, in order to avoid liquid entering the inside of the driving assembly 12, the second output end 102 and the pump wheel 30 are connected through a non-contact transmission assembly, so that the second output end 102 of the driving assembly 12 and the pump wheel 30 can be separated by a partition plate, the sealing performance of the pump cavity 501 is improved, and liquid entering the inside of the driving assembly 12 to affect the service life is avoided. The non-contact transmission assembly includes, but is not limited to, magnetic coupling, electromagnetic induction transmission, and capacitive coupling transmission.

[0053] In an embodiment, the non-contact transmission assembly comprises a first magnetic element arranged at the second output end 102, and a second magnetic element arranged at the pump wheel 30, the first magnetic element and the second magnetic element are driven by magnetic coupling. When the second output end 102 is rotatable to drive the first magnetic element to rotate, the first magnetic element drives the second magnetic element to rotate by magnetic force, and then drives the pump wheel 30 to rotate. In this way, the non-contact transmission between the second output shaft and the pump wheel 30 can be realized.

[0054] As shown in FIG. 4, in an embodiment, the driving assembly 12 comprises a stator 121, a first rotor 122 and a second rotor 123, the first rotor 122 is configured to form the first output end 101, the second rotor 123 is configured to form the second output end 102, the stator 121 and the first rotor 122 together form a first magnetic circuit to drive the first rotor 122 to rotate, and the stator 121 and the second rotor 123 together form a second magnetic circuit to drive the second rotor 123 to rotate.

[0055] In an embodiment, the driving device 10 can specifically adopt a double-rotor motor, the two rotors of the double-rotor motor are respectively connected to the wind wheel 20 and the pump wheel 30, so that only one set of electric control system is needed to control the double-rotor motor to work, and the wind wheel 20 and the pump wheel 30 can be driven to rotate by the double-rotor motor. The driving assembly 12 comprises a stator 121, a first rotor 122 and a second rotor 123, wherein the first rotor 122 and the second rotor 123 can be arranged along the radial direction of the stator 121, or the first rotor 122 and the second rotor 123 can be arranged along the axial direction of the stator 121. The stator 121 and the first rotor 122 form a first magnetic circuit through an air gap, and the coil winding of the stator 121 is energized to drive the first rotor 122 to rotate through the magnetic field of the first magnetic circuit, and then drive the wind wheel 20 to rotate through the first rotor 122. The stator 121 and the second rotor 123 form a second magnetic circuit through an air gap, and the coil winding of the stator 121 is energized to drive the second rotor 123 to rotate through the magnetic field of the second magnetic circuit, and then drive the pump wheel 30 to rotate through the second rotor 123. The first rotor 122 and the second rotor 123 share one stator 121, compared with a double-stator 121 double-rotor motor, one stator 121 can be saved, the overall structure is simpler, the cost is lower, and the volume is smaller.

[0056] As shown in FIG. 4, in an embodiment, the stator 121 comprises a stator core, and a first winding coil and a second winding coil arranged on the stator core, the first winding coil is in driving cooperation with the first rotor 122, and the second winding coil is in driving cooperation with the second rotor 123, the first winding coil and the second winding coil are respectively controlled by different circuits, so as to realize independent driving of the first rotor 122 and the second rotor 123, and realize independent rotation of the fan and the pump wheel 30. In an embodiment, the stator 121 further comprises an insulation system covering the surface of the stator core, and the winding coil is separated from the stator core by the insulation system, so as to avoid scratching the winding coil or causing short circuit risk. The insulation system can be realized by spraying an insulation layer on the surface of the stator core, or realized by assembling an insulation skeleton outside the stator core.

[0057] As shown in FIG. 4, in an embodiment, the stator 121 is arranged in a ring shape, the first rotor 122 is arranged around the periphery of the stator 121, and the second rotor 123 is arranged in the inner cavity of the stator 121. In this embodiment, the first rotor 122 is an outer rotor rotatably sleeved around the periphery of the stator 121, and the second rotor 123 is an inner rotor rotatably arranged in the inner cavity of the stator 121, so that the first rotor 122 and the second rotor 123 are arranged along the radial direction of the stator 121, the overall arrangement structure is simple, which is beneficial to reduce the size of the driving device 10 in the axial direction, and further reduce the volume of the fan and pump assembly 100.

[0058] As shown in FIG. 4, in an embodiment, the driving assembly 12 further comprises a shielding cover 124, the stator 121 is sleeved around the periphery of the shielding cover 124, the first rotor 122 is sleeved around the periphery of the stator 121 and is rotatably connected with the shielding cover 124, and the second rotor 123 is rotatably arranged in the shielding cover 124. In this embodiment, the shielding cover 124 can be used as a mounting carrier of the stator 121, the first rotor 122 and the second rotor 123, so as to facilitate the mounting of the three. By arranging the shielding cover 124, the second rotor 123 can be separated from the stator 121, so as to play a dry and wet isolation role, so as to prevent water in the pump cavity 501 from entering the stator 121, so as to ensure the safety of the driving device 10. The stator 121 and the shielding cover 124 can be fixed by glue filling (such as epoxy resin material) or BMC injection.

[0059] As shown in FIG. 4, in an embodiment, the shield 124 is provided with a bearing 126, the first rotor 122 comprises a rotor shell 1221, a first magnetic ring 1223 and a first rotating shaft 1222, the rotor shell 1221 is sleeved on the periphery of the stator 121, the first magnetic ring 1223 is fixed on the inner circumferential surface of the rotor shell 1221 and is arranged opposite to the stator 121, one end of the first rotating shaft 1222 is connected with the bearing 126, the other end is connected with the rotor shell 1221, and the wind wheel 20 is connected with the rotor shell 1221. In this embodiment, the first magnetic ring 1223 can be fixed on the inner circumferential surface of the rotor shell 1221 by means of adhesion or fastener connection or the like, one end of the first rotating shaft 1222 is connected with the bearing 126 in the first accommodating cavity, and the other end of the first rotating shaft 1222 can be connected and fixed with the rotor shell 1221 by means of fastener connection or interference fit or the like, and the first rotor 122 can be stably supported by the bearing 126 to ensure the stability of the rotation of the first rotor 122. The wind wheel 20 and the rotor shell 1221 can be integrally formed or can be in a split structure and then assembled and fixed.

[0060] As shown in FIG. 4, in an embodiment, the drive device 12 further comprises a fixed shaft 125, one end of the fixed shaft 125 is connected with the pump shell 50, the other end is connected with the shield 124, the second rotor 123 comprises a shaft sleeve 1231, a second rotating shaft 1232 and a second magnetic ring 1233 which are sequentially sleeved on the periphery of the fixed shaft 125 from inside to outside, and the second rotating shaft 1232 is connected with the pump wheel 30. In this embodiment, the fixed shaft 125 is fixed relative to the shield 124 and the pump shell 50, the shaft sleeve 1231 is rotatably sleeved on the periphery of the fixed shaft 125, the second rotating shaft 1232 is fixed on the periphery of the shaft sleeve 1231, the second magnetic ring 1233 is fixed on the periphery of the second rotating shaft 1232, and the second magnetic ring 1233 and the stator 121 assembly form a second magnetic circuit through an air gap. The magnetic field in the second magnetic circuit drives the second magnetic ring 1233 to rotate, and then drives the second rotating shaft 1232 to rotate through the second magnetic ring 1233, and drives the pump wheel 30 to rotate through the second rotating shaft 1232, thereby realizing the water pump function.

[0061] As shown in FIG. 5, in another embodiment, the drive assembly 12 comprises a rotor 120, a stator 121 and an output shaft 127, the rotor 120 is sleeved on the periphery of the output shaft 127 and can drive the output shaft 127 to rotate together, the output shaft 127 has a first output end 101 and a second output end 102 at two ends thereof, the wind wheel 20 and the pump wheel 30 are connected to the two ends of the output shaft 127 respectively, and the stator 121 is sleeved on the periphery of the rotor 120 and forms a magnetic circuit with the rotor 120 to drive the rotor 120 to rotate.

[0062] In the embodiment, the stator 121 is fixed in the casing 11, for example, the stator 121 can be assembled in the cavity of the casing 11, or the stator 121 can be integrally molded in the wall of the casing 11. The stator 121 can include a stator core and a winding coil arranged on the stator core, and the winding coil is energized to drive the rotor 120 to rotate. In an embodiment, the stator 121 further includes an insulation system covering the surface of the stator core, and the winding coil is separated from the stator core by the insulation system to avoid scratching the winding coil or causing short circuit risk. The insulation system can be realized by spraying an insulation layer on the surface of the stator core, or by assembling an insulation skeleton outside the stator core. The rotor 120 is accommodated in the inner cavity of the stator 121, and the output shaft 127 penetrates the center of the rotor 120, and the two ends of the output shaft 127 respectively penetrate the two sides of the casing 11, and the end of the output shaft 127 close to the volute 40 forms the first output end 101 to connect the wind wheel 20, and the end of the output shaft 127 close to the pump shell 50 forms the second output end 102 to connect the pump wheel 30. When the winding coil of the stator 121 is energized, the rotor 120 can be driven to rotate, and the rotor 120 can drive the output shaft 127 to rotate, thereby driving the wind wheel 20 and the pump wheel 30 to rotate synchronously through the output shaft 127, and at this time the wind wheel 20 and the pump wheel 30 can rotate simultaneously, in the same direction and at the same speed.

[0063] As shown in FIGS. 2 and 4, in an embodiment, the casing 11 includes an end plate 111 and a shell body 112 arranged on one side of the end plate 111, the end plate 111 protrudes from the outer peripheral surface of the shell body 112, the drive assembly 12 is installed in the shell body 112, the side of the end plate 111 away from the shell body 112 forms a first end face, the side of the shell body 112 away from the end plate 111 forms a second end face, the volute 40 has an opening facing the end plate 111, the end plate 111 covers the opening, the side of the volute 40 away from the end plate 111 is provided with an air inlet 402, and the peripheral side of the volute 40 is provided with an air outlet 403.

[0064] In the embodiment, the shell body 112 of the casing 11 can realize the installation and fixation of the drive assembly 12, and the end plate 111 of the casing 11 and the volute 40 together form the fan cavity 401. The wind wheel 20 can be a centrifugal wind wheel 20 arranged in the fan cavity 401, when the wind wheel 20 rotates, the airflow is sucked into the fan cavity 401 along the axial direction of the wind wheel 20 through the air inlet 402, and then is blown out from the air outlet 403 on the peripheral side of the volute 40 under the action of centrifugal force. In order to simplify the manufacturing process of the casing 11, the end plate 111 and the shell body 112 are integrally formed, for example, the end plate 111 and the shell body 112 can be integrally injection molded. In an embodiment, the side of the end plate 111 away from the first end face is provided with a protruding rib 113, which can play a structure strengthening role, and is also beneficial to heat dissipation of the drive device 10.

[0065] As shown in FIG. 6, the application also provides a gas water heating device 1000, which comprises a main body 200 and a fan water pump assembly 100. The main body 200 has a gas path system and a water path system. The fan water pump assembly 100 is installed on the main body 200. A fan cavity 401 of the fan water pump assembly 100 is communicated with the gas path system, and a pump cavity 501 of the fan water pump assembly 100 is communicated with the water path system. The specific structure of the fan water pump assembly 100 refers to the above-mentioned embodiments. Since the gas water heating device 1000 adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0066] The gas water heating device 1000 includes but is not limited to a gas water heater, a gas heating stove, etc. The gas water heating device 1000 includes but is not limited to a strong-drum type gas water heating device 1000 and a strong-extraction type gas water heating device 1000.

[0067] The above-mentioned is only an exemplary embodiment of the application, and does not limit the patent scope of the application. Any equivalent structural transformation, direct / indirect application in other related technical fields based on the technical concept of the application, and the contents of the specification and drawings are included in the patent protection scope of the application.

Claims

1. A fan pump assembly, wherein, The fan water pump assembly comprises: a driving device having a first output end and a second output end for outputting torque, the first output end being drivingly connected with a fan wheel, and the second output end being drivingly connected with a pump wheel; a volute connected with the driving device, the volute and the driving device jointly defining a fan cavity for accommodating the fan wheel, the fan cavity having an air inlet and an air outlet, the fan wheel rotating to drive gaseous fluid in the fan cavity to flow from the air inlet to the air outlet; and a pump shell connected with the driving device, the pump shell and the driving device jointly defining a pump cavity for accommodating the pump wheel, the pump cavity having a liquid inlet and a liquid outlet, the pump wheel rotating to drive liquid fluid in the pump cavity to flow from the liquid inlet to the liquid outlet.

2. The fan pump assembly of claim 1, wherein, The first output end and the second output end are configured to independently output torque to drive the fan wheel and the pump wheel to rotate independently. Alternatively, the first output end and the second output end are configured to synchronously output torque to drive the fan wheel and the pump wheel to rotate synchronously.

3. The fan pump assembly of claim 2, wherein, The fan wheel has a rotational speed of n1, and the pump wheel has a rotational speed of n2, wherein the ratio of n1 to n2 is a fixed constant.

4. The fan pump assembly of claim 1, wherein, The fan wheel is a centrifugal fan wheel; and / or the fan wheel comprises at least two layers of impellers arranged in an axial direction.

5. The fan pump assembly of any one of claims 1 to 4, wherein, The driving device comprises a housing and a driving assembly arranged in the housing, the driving assembly having the first output end and the second output end, the housing having a first end face and a second end face opposite to each other in an axial direction of the fan wheel, the volute and the first end face jointly defining the fan cavity, and the pump shell and the second end face jointly defining the pump cavity.

6. The fan pump assembly of claim 5, wherein, The first output end penetrates through the first end face to be directly drivingly connected with the fan wheel, and the second output end is connected with the pump wheel through a non-contact transmission assembly for power transmission.

7. The fan pump assembly of claim 5 or 6, wherein, The driving assembly comprises a stator, a first rotor and a second rotor, the first rotor being configured to define the first output end, the second rotor being configured to define the second output end, the stator and the first rotor jointly defining a first magnetic circuit to drive the first rotor to rotate, and the stator and the second rotor jointly defining a second magnetic circuit to drive the second rotor to rotate. Alternatively, the driving assembly comprises a rotor, a stator and an output shaft, the rotor being sleeved on the periphery of the output shaft and capable of rotating together with the output shaft, the output shaft having two ends respectively defining the first output end and the second output end, the fan wheel and the pump wheel being respectively connected to the two ends of the output shaft, and the stator being sleeved on the periphery of the rotor and configured to define a magnetic circuit with the rotor to drive the rotor to rotate.

8. The fan pump assembly of any one of claims 5-7, wherein, The shell comprises an end plate and a shell body provided at one side of the end plate, the end plate protrudes from the outer peripheral surface of the shell body, the driving assembly is installed in the shell body, the side of the end plate away from the shell body forms the first end face, the side of the shell body away from the end plate forms the second end face, the volute has an opening towards the end plate, the end plate covers the opening, the side of the volute away from the end plate is provided with the air inlet, and the peripheral side of the volute is provided with the air outlet.

9. The fan pump assembly of claim 8, wherein, The end plate and the shell body are integrally formed; and / or the side of the end plate away from the first end face is provided with a protruding rib.

10. A gas water heating apparatus wherein, The gas water heating device comprises: a main body having a gas path system and a water path system; and The fan water pump assembly according to any one of claims 1 to 9 is installed in the main body, the fan cavity of the fan water pump assembly communicates with the gas path system, and the pump cavity of the fan water pump assembly communicates with the water path system.

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