Energy-saving and environmentally friendly AC motor

Abstract

The present invention belongs to the technical field of permanent magnet synchronous motors, and in particular, relates to an energy-saving and environmentally friendly AC motor, comprising a cylindrical casing, wherein the inner wall and the outer wall of the casing are respectively provided with a stator and a control box, wherein the winding coil in the stator is wound in a distributed manner, and the end surface of the stator is provided with a plurality of slots evenly distributed in the circumferential direction, wherein the slot is provided with an L-shaped special-shaped heat pipe whose exposed end is bent toward the axis direction of the casing, and wherein the inner wall of the special-shaped heat pipe is provided with a capillary suction structure. The present invention effectively dissipates heat and cools a rotor mounted on a rotating shaft through a heat pipe structure on a rotating shaft, and the structure of the inner wall of the circular groove on the quarter axis and the inner wall of the heat absorbing groove in the heat pipe structure ensures that the working fluid circulates under the centrifugal action, and at the same time ensures that the inner wall of the heat absorbing groove corresponding to the rotor evenly distributes the working fluid and effectively absorbs heat and cools it, thereby achieving the purpose of effectively cooling and dissipating heat of the rotor.

Description

Technical Field

[0001] The invention belongs to the technical field of permanent magnet synchronous motors, and in particular relates to an energy-saving and environment-friendly AC motor. Background Art

[0002] The core of the permanent magnet motor lies in the permanent magnet it uses, which is usually made of materials such as neodymium iron boron and has extremely high magnetic strength.

[0003] Permanent magnet AC motors have the following advantages over traditional motors.

[0004] (1) Permanent magnet motors do not need to generate magnetic fields through current, which greatly reduces energy loss and improves motor efficiency. When current passes through the winding coil, the generated magnetic field interacts with the magnetic field of the permanent magnet, thereby driving the motor to operate.

[0005] (2) High efficiency and energy saving: Permanent magnet motors use high-performance permanent magnet materials and do not require external excitation, which greatly improves the motor's working efficiency, up to 95% or more, and significantly reduces energy consumption and carbon emissions.

[0006] (3) Lightweight and miniaturization: The strong magnetic properties of permanent magnet materials make the motor structure more compact, lighter, and smaller, which is conducive to improving the integration and portability of equipment. It is widely used in electric vehicles, wind power generation and other fields.

[0007] (4) Low noise and long life: Permanent magnet motors run smoothly and with low noise. In addition, the permanent magnets do not require maintenance, which makes them have a longer service life and lower maintenance costs, meeting the requirements of sustainable development.

[0008] Permanent magnet motors are leading a green energy revolution worldwide with their high efficiency, energy saving and environmental protection. With the continuous advancement of technology and the gradual reduction of costs, the application scope of permanent magnet motors will be further expanded, contributing to the construction of a low-carbon and efficient future energy system. Whether in industrial production, transportation or daily life, permanent magnet motors will become a model of new green energy options, opening a cleaner and more sustainable energy era.

[0009] The design of the air gap of a permanent magnet motor needs to take into account the presence of low-resistance materials (such as iron) in the magnetic circuit of the electromagnetic device, which can minimize the electrical energy required to generate the magnetic field. Gaps in the magnetic circuit are usually unavoidable because they contain air, which provides high resistance to the magnetic flux and is harmful to the magnetizing current and related electrical losses. Therefore, a reasonable design of the air gap is of great significance for controlling the inductance, avoiding magnetic saturation, and optimizing the performance of the motor. For example, the patent with application number 201811299443.X achieves energy saving by evacuating the motor, but a special vacuum pump is required, and the sealing structure does not disclose new technology. For the negative pressure cavity with rotating parts in the motor, its sealing structure generally requires a larger volume, and it is difficult to arrange a conventional sealing structure for a permanent magnet motor with a small volume.

[0010] In order to reduce the energy consumption of motors, cooling is an important measure. The general cooling measures are used on the stator. The rotor needs to rotate at high speed and no cooling structure is arranged. The permanent magnets on the rotor are easily affected by temperature, so it is necessary to study the structure of effective heat dissipation and cooling of the rotor.

[0011] The present invention designs an energy-saving and environment-friendly AC motor to solve the above problems. Summary of the invention

[0012] Based on this, it is necessary to provide an energy-saving and environmentally friendly AC motor to address the problems existing in the current AC motors. The present invention uses two exhaust structures on the rotating shaft composed of four quarter shafts to perform negative pressure vacuuming on the space where the stator and the rotor are located, while forming an effective seal on the space where the stator and the rotor are located, ensuring that the motor always maintains a low-pressure environment, reducing the air in the gap between the stator and the rotor, thereby reducing the magnetic flux resistance, increasing the magnetizing current and reducing related electrical losses, which is of great significance for controlling inductance, avoiding magnetic saturation and optimizing motor performance, and achieving unexpected technical effects. In the present invention, the two exhaust structures on the rotating shaft composed of four quarter shafts perform negative pressure vacuuming on the space where the stator and the rotor are located, which can ensure that the air pressure in the motor will not change dramatically, reduce the friction between the air and the internal structure of the motor, and thereby reduce the noise generated by air friction when the motor is running. The present invention effectively dissipates heat and cools the rotor installed on the rotating shaft through the heat pipe structure on the rotating shaft. The structure of the inner wall of the circular groove on the quarter axis and the inner wall of the heat absorption groove in the heat pipe structure ensures that the working medium circulates under the centrifugal action while ensuring that the inner wall of the heat absorption groove corresponding to the rotor evenly distributes the working medium and effectively absorbs heat and cools it, thereby achieving the purpose of effectively cooling and dissipating heat of the rotor. The circular groove and the heat absorption groove of the heat pipe structure in the present invention are in a negative pressure environment and have less working medium, thereby achieving the effect of effectively dissipating heat from the rotor while not affecting the dynamic balance of the rotor during rotation.

[0013] The above purpose is achieved through the following technical solutions:

[0014] An energy-saving and environmentally friendly AC motor, used for converting AC power into kinetic energy, comprising:

[0015] A cylindrical casing, wherein the inner wall and the outer wall of the casing are respectively provided with a stator and a control box, wherein the winding coil in the stator adopts distributed winding, and the end surface of the stator is provided with a plurality of slots evenly distributed in the circumferential direction. The slots are inserted with L-shaped special-shaped heat pipes whose exposed ends are bent toward the axis direction of the casing, so as to facilitate the reflux of the liquid working medium formed by condensation in the exposed L-end of the special-shaped heat pipe. The inner wall of the special-shaped heat pipe is provided with a capillary suction structure, and the exposed L end of the special-shaped heat pipe is provided with a plurality of second heat sinks, and the two ends of the casing are respectively installed with a first end cover and a second end cover by bolt sealing, and the second end cover is evenly provided with a plurality of heat dissipation grooves, and a first ring plate is provided in the casing, and the first ring plate and the first end cover are distributed at both ends of the stator, and a rotating shaft is provided in the first circular hole in the middle of the first end cover and the first ring plate, and a plurality of rotors matching the stator are provided on the rotating shaft, and the permanent magnet in the rotor is built-in, and two exhaust structures for sealing and vacuuming the space where the stator and the rotor are located during the forward rotation of the rotating shaft are provided between the rotating shaft and the inner wall of the first ring plate and the inner wall of the first circular hole, and a heat pipe structure for effectively dissipating heat and cooling the rotor is provided on the rotating shaft, and a fan for discharging the heat of the second heat sink and the heat pipe structure through the heat dissipation groove on the second end cover is provided on the rotating shaft.

[0016] In one embodiment, the rotating shaft is formed by four quarter shafts, and the quarter shafts are provided with a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a fifth cylinder, a sixth cylinder and a seventh cylinder. The second cylinder and the sixth cylinder are distributed at both ends of the first cylinder, the first cylinder and the seventh cylinder are distributed at both ends of the sixth cylinder, the first cylinder and the third cylinder are distributed at both ends of the second cylinder, the second cylinder and the fourth cylinder are distributed at both ends of the third cylinder, the fifth cylinder and the third cylinder are distributed at both ends of the fourth cylinder, and the edges of both sides of the first cylinder are provided with Two first key strips, two second key strips are arranged on both side edges of the third cylindrical surface, two third key strips are arranged on both side edges of the seventh cylindrical surface, the two first key strips on adjacent quarter axes are connected by bolts, the two second key strips on adjacent quarter axes are connected by bolts, the two third key strips on adjacent quarter axes are connected by bolts, and positioning grooves and positioning strips are respectively arranged on the two right-angle surfaces of the quarter axes, the positioning strips cooperate with the positioning grooves on the adjacent quarter axes, and a sealing strip is cooperated between the positioning strips and the positioning grooves on the corresponding quarter axes.

[0017] In one embodiment, an axial hole is opened in the middle of the rotor to cooperate with four quarter shafts, and four first key grooves are opened on the inner wall of the axial hole to correspond one by one with the first key strips on the rotating shaft, and a first nut for axial positioning of the entire rotor is threaded on the first cylindrical surface of the rotating shaft.

[0018] In one embodiment, a bearing is provided between the second cylindrical surface and the first groove on the inner wall of the first ring plate, and a bearing is provided between the sixth cylindrical surface and the second groove on the inner wall of the third ring sleeve at the first circular hole.

[0019] In one of the embodiments, a first ring sleeve opposite to the third cylinder is provided on the first ring plate, a second nut is threadedly engaged with the third ring sleeve, a sealing ring engaged with the first end cover is provided at the end of the second nut, a retaining ring for positioning the bearing in the third ring sleeve is provided on the inner wall of the second nut, the two exhaust structures are respectively arranged between the third cylinder and the first ring sleeve and between the seventh cylinder and the second nut, and the fan is arranged on the third cylinder of the rotating shaft.

[0020] In one embodiment, the exhaust structure includes a second ring sleeve, which is arranged on the third cylindrical surface or the seventh cylindrical surface. The inner wall of the second ring sleeve is provided with four second key grooves evenly distributed in the circumferential direction, and the second key grooves cooperate with the second key strip on the third cylindrical surface of the rotating shaft or the third key strip on the seventh cylindrical surface. The outer wall of the second ring sleeve is provided with three circles of first blades having an angle with the axis thereof, and the top of each circle of the first blades is provided with three axially spaced circular rings, and the circular rings cooperate one-to-one with a plurality of ring grooves formed by rubber rings on the second nut or the inner wall of the first ring sleeve.

[0021] In one embodiment, the fan includes a fourth ring sleeve, which is arranged on the third cylindrical surface of the rotating shaft, and the inner wall of the fourth ring sleeve is provided with four fourth key grooves evenly distributed circumferentially, and the fourth key grooves cooperate with the second key strips on the third cylindrical surface, and the outer wall of the fourth ring sleeve is provided with a plurality of second blades evenly distributed circumferentially, and the fourth ring sleeve is locked by a third nut threadedly connected to the fourth cylindrical surface of the rotating shaft.

[0022] In one embodiment, the seventh cylindrical end of the rotating shaft is mounted on a round shaft, and the inner wall of the round shaft is provided with four third key grooves evenly distributed circumferentially, and the third key grooves cooperate with the third key strips on the seventh cylindrical surface, and a bolt that cooperates with the threaded groove at the end of the rotating shaft is installed in the countersunk hole in the middle of the end face of the round shaft.

[0023] In one embodiment, the heat pipe structure includes a quarter circular groove, which is opened on the end face of the fifth cylindrical surface of the quarter shaft, and the two right-angled surfaces of the quarter shaft are each provided with a fan-shaped heat absorption groove connected to the circular groove, and the heat absorption groove completely passes through the entire rotor axially, and the inner wall of the large-diameter arc of the heat absorption groove is a conical surface, and a screw sleeve is threadedly connected to the fifth cylindrical surface, and a sealing ring is matched with the end of the screw sleeve and the fourth cylindrical surface, and a fifth ring sleeve is provided at the end of the screw sleeve, and the outer wall of the fifth ring sleeve is provided with a plurality of circumferentially uniform The third heat sink is evenly distributed, the inner wall of the fifth ring sleeve is a conical surface docked with the circular groove, the conical surface of the heat absorption groove, the inner circular wall surface of the circular groove and the inner wall of the fifth ring sleeve are all provided with circumferentially dense drainage grooves, the adjacent drainage grooves are connected by evenly dense connecting ports, a capillary suction structure is arranged in the drainage groove, the capillary suction structures in the drainage groove are circumferentially spaced, the small diameter arc wall and two straight walls of the heat absorption groove are both provided with capillary suction structures, and the end of the fifth ring sleeve is threadedly connected with a sealing sleeve that cooperates with the second circular hole in the middle of the second end cover.

[0024] In one of the embodiments, a plurality of insertion holes corresponding to the slots are formed on the first ring plate, the special-shaped heat pipes are inserted into the insertion holes and the corresponding slots, a plurality of heat dissipation holes corresponding to the second heat dissipation fins on the exposed ends of the special-shaped heat pipes are formed on the wall surface of the casing, first heat dissipation fins are evenly arranged on the outside of the casing, a base is provided at the bottom of the casing, and a sealing ring is provided between the casing and the first end cover and the second end cover.

[0025] The beneficial effects of the present invention are:

[0026] 1. The present invention uses two exhaust structures on the rotating shaft composed of four quarter shafts to perform negative pressure vacuum in the space where the stator and the rotor are located, and at the same time forms an effective seal for the space where the stator and the rotor are located, thereby ensuring that the motor always maintains a low-pressure environment, reducing the air in the gap between the stator and the rotor, thereby reducing the magnetic flux resistance, increasing the magnetizing current and reducing related electrical losses, which is of great significance for controlling inductance, avoiding magnetic saturation and optimizing motor performance, and achieving unexpected technical effects.

[0027] 2. The negative pressure evacuation of the space where the stator and the rotor are located by the two exhaust structures on the rotating shaft composed of four quarter shafts in the present invention can ensure that the air pressure in the motor will not change drastically, reduce the friction between the air and the internal structure of the motor, and thus reduce the noise generated by air friction when the motor is running.

[0028] 3. The present invention uses the heat pipe structure on the rotating shaft to effectively dissipate heat and cool the rotor installed on the rotating shaft. The structure of the inner wall of the circular groove on the quarter axis and the inner wall of the heat absorption groove in the heat pipe structure ensures that the working fluid circulates under the centrifugal action while ensuring that the inner wall of the heat absorption groove corresponding to the rotor evenly distributes the working fluid and effectively absorbs heat and cools it, thereby achieving the purpose of effectively cooling and dissipating the heat of the rotor.

[0029] 4. The circular grooves and heat absorption grooves of the heat pipe structure of the present invention are in a negative pressure environment and have less working fluid, thereby achieving the effect of effectively dissipating the heat of the rotor without affecting the dynamic balance of the rotor during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is an overall schematic diagram of the present invention.

[0031] Figure 2 It is an overall side sectional view of the present invention.

[0032] Figure 3 It is a cross-sectional view of the output end structure of the rotating shaft in the present invention.

[0033] Figure 4 It is a cross-sectional view of the heat dissipation end structure of the rotating shaft in the present invention.

[0034] Figure 5 It is a cross-sectional view of the cooperation between the circular shaft and the quarter shaft in the present invention.

[0035] Figure 6 It is a cross-sectional view of the rotor and the quarter shaft in the present invention.

[0036] Figure 7 It is a cross-sectional view of the fan and the quarter shaft in the present invention.

[0037] Figure 8 It is a cross-sectional view of the exhaust structure and the quarter-axle in the present invention.

[0038] Fig. 9 It is an overall cross-sectional view of the present invention.

[0039] Fig.10 It is a casing and a cross-sectional view thereof in the present invention.

[0040] Fig.11 It is a stator structure diagram of the present invention.

[0041] Fig.12 It is a special-shaped heat pipe structure and a cross-sectional view thereof in the present invention.

[0042] Fig.13 It is a schematic diagram of the rotor structure in the present invention.

[0043] Fig.14 It is a cross-sectional view of the second end cover and the second end cover structure in the present invention.

[0044] Fig.15 It is the second nut structure and its cross-sectional view in the present invention.

[0045] Fig.16 It is a schematic diagram of the exhaust structure in the present invention.

[0046] Fig.17 It is a circular axis sectional view in the present invention.

[0047] Fig.18 It is a structural diagram of the fan in the present invention.

[0048] Fig.19 It is the fifth ring sleeve structure in the heat pipe structure of the present invention and its cross-sectional view.

[0049] Fig. 20 These are two structural diagrams of a quarter axis constituting the rotating shaft in the present invention.

[0050] Fig.21 It is a partial view of the heat dissipation end of a quarter shaft in the present invention.

[0051] Fig. 22 It is a schematic diagram of the structure of the circular groove and the heat absorption groove of the quarter shaft in the present invention.

[0052] Fig.23 2 are two structural diagrams of the rotating shaft in the present invention.

[0053] Fig.24 It is a cross-sectional view of the rotating shaft structure of the present invention.

[0054] Name of the label in the figure:

[0055] 101, housing; 102, heat dissipation hole; 103, first heat sink; 104, control box; 105, base; 106, first ring plate; 107, jack; 108, first ring sleeve; 109, first slot; 110, stator; 111, slot; 112, winding coil; 113, special-shaped heat pipe; 114, capillary structure; 115, second heat sink; 116, shaft; 117, quarter shaft; 118, screw groove; 119, circular groove; 120, heat absorption groove; 121, drainage groove; 122, communication port; 123, positioning groove; 124, positioning strip; 125, sealing strip; 126, second cylindrical surface; 127, third cylindrical surface; 128, second key strip; 129, fourth cylindrical surface; 130, fifth cylindrical surface; 131, first key strip; 132, sixth cylindrical surface; 133, seventh cylindrical surface; 134, third key strip; 135, bolt; 1 36. rotor; 137. shaft hole; 138. first keyway; 139. permanent magnet; 140. first nut; 141. bearing; 142. exhaust structure; 143. second ring sleeve; 144. second keyway; 145. first blade; 146. ring; 147. rubber ring; 148. first end cover; 149. third ring sleeve; 150. second clamping groove; 151. sealing ring; 152. second nut; 154. clamping ring ; 155, round shaft; 156, third keyway; 157, fan; 158, fourth ring sleeve; 159, fourth keyway; 160, second blade; 161, third nut; 162, fifth ring sleeve; 163, third heat sink; 164, screw sleeve; 165, sealing sleeve; 166, second end cover; 167, second circular hole; 168, heat sink; 169, heat pipe structure; 170, first cylinder; 171, first circular hole. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0057] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] like Figure 1-24 As shown, an energy-saving and environmentally friendly AC motor is used to convert AC power into kinetic energy, comprising:

[0060] The cylindrical housing 101 has a stator 110 and a control box 104 disposed on the inner wall and the outer wall of the housing 101, respectively. The winding coil 112 in the stator 110 is wound in a distributed manner, and a plurality of slots 111 evenly distributed in the circumferential direction are provided on the end surface of the stator 110. The slots 111 are inserted with L-shaped special-shaped heat pipes 113 whose exposed ends are bent toward the axis direction of the housing 101, so as to facilitate the reflux of the liquid working medium condensed in the exposed L-end of the special-shaped heat pipe 113. The inner wall of the special-shaped heat pipe 113 is provided with a capillary structure 114, and the exposed L end of the special-shaped heat pipe 113 is provided with a plurality of second heat sinks 115. The two ends of the housing 101 are respectively sealed with a first end cover 148 and a second end cover 166 by bolts 135. The second end cover 166 is evenly provided with a plurality of heat dissipation grooves 168. A first ring plate 106 is provided in the housing 101. The first ring plate 106 and the first end cover 148 are distributed at both ends of the stator 110. A rotating shaft 116 is provided in the first circular hole 171 in the middle of the first end cover 148 and the first ring plate 106. The rotating shaft 116 A plurality of rotors 136 cooperating with the stator 110 are arranged on it, and the permanent magnets 139 in the rotors 136 are built-in. Two exhaust structures 142 are arranged between the rotating shaft 116 and the inner wall of the first ring plate 106 and the inner wall of the first circular hole 171 for sealing and evacuating the space where the stator 110 and the rotor 136 are located during the forward rotation of the rotating shaft 116. A heat pipe structure 169 is arranged on the rotating shaft 116 for effectively dissipating heat and cooling the rotor 136. A fan 157 is arranged on the rotating shaft 116 for discharging the heat of the second heat sink 115 and the heat pipe structure 169 through the heat dissipation groove 168 on the second end cover 166.

[0061] In a further embodiment, Fig. 20 , 21As shown in Figures 23 and 24, the rotating shaft 116 is formed by four quarter shafts 117, and the quarter shaft 117 is provided with a first cylinder 170, a second cylinder 126, a third cylinder 127, a fourth cylinder 129, a fifth cylinder 130, a sixth cylinder 132 and a seventh cylinder 133. The second cylinder 126 and the sixth cylinder 132 are distributed at both ends of the first cylinder 170, the first cylinder 170 and the seventh cylinder 133 are distributed at both ends of the sixth cylinder 132, the first cylinder 170 and the third cylinder 127 are distributed at both ends of the second cylinder 126, the second cylinder 126 and the fourth cylinder 129 are distributed at both ends of the third cylinder 127, the fifth cylinder 130 and the third cylinder 127 are distributed at both ends of the fourth cylinder 129, and the two side edges of the first cylinder 170 Two first key strips 131 are provided, two second key strips 128 are provided on both side edges of the third cylindrical surface 127, two third key strips 134 are provided on both side edges of the seventh cylindrical surface 133, the two first key strips 131 on adjacent quarter shafts 117 are connected by bolts 135, the two second key strips 128 on adjacent quarter shafts 117 are connected by bolts 135, the two third key strips 134 on adjacent quarter shafts 117 are connected by bolts 135, and positioning grooves 123 and positioning strips 124 are respectively provided on two right-angled surfaces of the quarter shaft 117, the positioning strips 124 cooperate with the positioning grooves 123 on the adjacent quarter shaft 117, and a sealing strip 125 is provided between the positioning strips 124 and the positioning grooves 123 on the corresponding quarter shaft 117.

[0062] In a further embodiment, Figure 6 , 13 As shown in Figures 20 and 23, an axial hole 137 cooperating with the four quarter shafts 117 is provided in the middle of the rotor 136, and four first key grooves 138 corresponding to the first key strips 131 on the rotating shaft 116 are provided on the inner wall of the axial hole 137, and a first nut 140 for axially positioning the entire rotor 136 is threadedly provided on the first cylindrical surface 170 of the rotating shaft 116.

[0063] In a further embodiment, Figure 2 , 3 As shown in FIG. 4 , a bearing 141 is provided between the second cylindrical surface 126 and the first groove 109 on the inner wall of the first ring plate 106 , and a bearing 141 is provided between the sixth cylindrical surface 132 and the second groove 150 on the inner wall of the third ring sleeve 149 at the first circular hole 171 .

[0064] In a further embodiment, Figure 3 , 4As shown in 15, a first ring sleeve 108 opposite to the third cylindrical surface 127 is provided on the first ring plate 106, a second nut 152 is threadedly fitted on the third ring sleeve 149, a sealing ring 151 fitted with the first end cover 148 is provided at the end of the second nut 152, a retaining ring 154 for positioning the bearing 141 in the third ring sleeve 149 is provided on the inner wall of the second nut 152, the two exhaust structures 142 are respectively arranged between the third cylindrical surface 127 and the first ring sleeve 108 and between the seventh cylindrical surface 133 and the second nut 152, and the fan 157 is arranged on the third cylindrical surface 127 of the rotating shaft 116.

[0065] In a further embodiment, Figure 3 , 4 As shown in 10, 15 and 16, the exhaust structure 142 includes a second ring sleeve 143, and the second ring sleeve 143 is arranged on the third cylindrical surface 127 or the seventh cylindrical surface 133. Four second key grooves 144 uniformly distributed in the circumferential direction are opened on the inner wall of the second ring sleeve 143, and the second key groove 144 cooperates with the second key strip 128 on the third cylindrical surface 127 of the rotating shaft 116 or the third key strip 134 on the seventh cylindrical surface 133. The outer wall of the second ring sleeve 143 is provided with three circles of first blades 145 having an angle with the axis thereof, and three axially spaced circular rings 146 are arranged on the top of each circle of the first blades 145, and the circular rings 146 are matched one by one with a plurality of annular grooves formed by rubber rings 147 on the second nut 152 or the inner wall of the first ring sleeve 108.

[0066] In a further embodiment, Figure 4 , 7 As shown in Figures 18 and 18, the fan 157 includes a fourth ring sleeve 158, and the fourth ring sleeve 158 is arranged on the third cylindrical surface 127 of the rotating shaft 116. Four circumferentially evenly distributed fourth key grooves 159 are opened on the inner wall of the fourth ring sleeve 158. The fourth key grooves 159 cooperate with the second key strips 128 on the third cylindrical surface 127. A plurality of circumferentially evenly distributed second blades 160 are arranged on the outer wall of the fourth ring sleeve 158. The fourth ring sleeve 158 is locked by a third nut 161 threadedly connected to the fourth cylindrical surface 129 on the rotating shaft 116.

[0067] In a further embodiment, Figure 4 , 5 As shown in Figures 17, the end of the seventh cylindrical surface 133 of the rotating shaft 116 is mounted on a round shaft 155, and the inner wall of the round shaft 155 is provided with four third key grooves 156 evenly distributed in the circumference, and the third key grooves 156 cooperate with the third key strips 134 on the seventh cylindrical surface 133, and a bolt 135 cooperating with the threaded groove 118 at the end of the rotating shaft 116 is installed in the countersunk hole in the middle of the end face of the round shaft 155.

[0068] In a further embodiment, Figure 4 , 19 , 20, 21, and 22, the heat pipe structure 169 includes a quarter circular groove 119, the circular groove 119 is provided on the end face of the fifth cylindrical surface 130 of the quarter shaft 117, and the two right-angled faces of the quarter shaft 117 are provided with a fan-shaped heat absorption groove 120 connected to the circular groove 119, the heat absorption groove 120 completely passes through the entire rotor 136 axially, the large-diameter arc inner wall of the heat absorption groove 120 is a conical surface, the fifth cylindrical surface 130 is threadedly connected with a screw sleeve 164, the screw sleeve 164 and the end of the fourth cylindrical surface 129 are matched with a sealing ring 151, the end of the screw sleeve 164 is provided with a fifth ring sleeve 162, and the outer wall of the fifth ring sleeve 162 is provided with a plurality of circumferential The third heat sink 163 is evenly distributed, and the inner wall of the fifth ring sleeve 162 is a conical surface docked with the circular groove 119. The conical surface of the heat absorption groove 120, the inner circular wall surface of the circular groove 119 and the inner wall of the fifth ring sleeve 162 are all provided with circumferentially dense drainage grooves 121. The adjacent drainage grooves 121 are connected by evenly dense connecting ports 122. The drainage grooves 121 are provided with capillary structures 114. The capillary structures 114 in the drainage grooves 121 are circumferentially spaced. The small diameter arc wall and the two straight walls of the heat absorption groove 120 are provided with capillary structures 114. The end of the fifth ring sleeve 162 is threadedly connected with a sealing sleeve 165 that cooperates with the second circular hole 167 in the middle of the second end cover 166.

[0069] The heat absorbing groove 120 and the circular groove 119 on the quarter shaft 117 facilitate the processing of the capillary absorption structure 114 in the heat absorbing groove 120 and the circular groove 119 .

[0070] In a further embodiment, Figure 2 , 10 As shown in FIG. 11 , a plurality of insertion holes 107 corresponding to the slots 111 are provided on the first ring plate 106, and the special-shaped heat pipes 113 are inserted into the insertion holes 107 and the corresponding slots 111. A plurality of heat dissipation holes 102 corresponding to the second heat dissipation fins 115 on the exposed ends of the special-shaped heat pipes 113 are provided on the wall surface of the casing 101, and the first heat dissipation fins 103 are evenly arranged on the outside of the casing 101, and a base 105 is provided at the bottom of the casing 101, and a sealing ring 151 is matched between the casing 101 and the first end cover 148 and the second end cover 166.

[0071] The present invention uses two exhaust structures 142 on the rotating shaft 116 composed of four quarter shafts 117 to perform negative pressure vacuum in the space where the stator 110 and the rotor 136 are located, and at the same time forms an effective seal for the space where the stator 110 and the rotor 136 are located, thereby ensuring that the interior of the motor always maintains a low-pressure environment, reducing the air in the gap between the stator 110 and the rotor 136, thereby reducing the magnetic flux resistance, increasing the magnetizing current and reducing related electrical losses, which is of great significance for controlling inductance, avoiding magnetic saturation and optimizing motor performance, and achieving unexpected energy-saving and environmental protection technical effects.

[0072] The negative pressure evacuation of the space where the stator 110 and the rotor 136 are located by the two exhaust structures 142 on the rotating shaft 116 composed of four quarter shafts 117 in the present invention can ensure that the air pressure in the motor will not change drastically, reduce the friction between the air and the internal structure of the motor, and further reduce the noise generated by air friction when the motor is running.

[0073] The present invention uses the heat pipe structure 169 on the rotating shaft 116 to effectively dissipate heat and cool the rotor 136 installed on the rotating shaft 116. The structure of the inner wall of the circular groove 119 on the quarter shaft 117 and the inner wall of the heat absorption groove 120 in the heat pipe structure 169 ensures that the working medium circulates under the centrifugal action while ensuring that the inner wall of the heat absorption groove 120 corresponding to the rotor 136 evenly distributes the working medium and effectively absorbs heat and cools it, thereby achieving the purpose of effectively cooling and dissipating the heat of the rotor 136.

[0074] In the present invention, the circular groove 119 and the heat absorption groove 120 of the heat pipe structure 169 are in a negative pressure environment and have less working fluid, thereby achieving the effect of effectively dissipating heat for the rotor 136 while not affecting the dynamic balance of the rotor 136 during rotation.

[0075] The assembly process of the present invention is as follows:

[0076] First, four quarter shafts 117 are assembled into a complete rotating shaft 116, and the first key strips 131, the second key strips 128 and the third key strips 134 on the adjacent quarter shafts 117 are connected and locked by bolts 135, six rotors 136 are installed on the first cylindrical surface 170 of the rotating shaft 116 and locked by two first nuts 140, and the bearing 141 is installed on the second cylindrical surface 126 of the rotating shaft 116.

[0077] Next, the shaft 116 is axially inserted into the first ring plate 106 so that the bearing 141 on the second cylindrical surface 126 is inserted into the first groove 109 on the inner wall of the first ring plate 106, and the entire rotor 136 enters the range of the stator 110. Then, the first end cover 148 is installed on one end of the casing 101 by means of the bolt 135, so that the shaft 116 is inserted into the first circular hole 171 in the middle of the first end cover 148, and the bearing 141 is installed on the sixth cylindrical surface 132 so that the bearing 141 is inserted into the second groove 150 on the inner wall of the third ring sleeve 149. Next, the second nut 152 is installed on the third ring sleeve 149, and the retaining ring 154 on the inner wall of the second nut 152 positions the corresponding bearing 141.

[0078] The second sleeve 143 is installed on the seventh cylindrical surface 133 of the rotating shaft 116. During the installation of the second sleeve 143 onto the seventh cylindrical surface 133, the circular rings 146 on the three circles of first blades 145 on the second sleeve 143 and the rubber ring 147 on the inner wall of the second nut 152 form a seal, and then the round shaft 155 is mounted on the seventh cylindrical surface 133 of the rotating shaft 116, and the round shaft 155 and the rotating shaft 116 are locked by the cooperation of the bolts 135 and the threaded grooves 118 on the rotating shaft 116.

[0079] Then, the second sleeve 143 and the fan 157 are sequentially installed on the third cylindrical surface 127. During the installation of the second sleeve 143 onto the seventh cylindrical surface 133, the circular ring 146 on the three circles of first blades 145 on the second sleeve 143 and the rubber ring 147 on the inner wall of the second nut 152 form a seal, and then the third nut 161 is installed on the fourth cylindrical surface 129 to lock the second sleeve 143 at the corresponding end of the fan 157.

[0080] Then, the fifth ring sleeve 162 is installed at the end of the circular groove 119 of the rotating shaft 116, and the circular groove 119 and the heat absorption groove 120 are evacuated by an air pump and a certain amount of working fluid is added therein, and then the sealing sleeve 165 is installed to seal the fifth ring sleeve 162. Then, the second end cover 166 is installed at the other end of the casing 101 by the bolts 135, so that the second circular hole 167 in the middle of the second end cover 166 is opposite to the sealing sleeve 165.

[0081] The operation process of the present invention is as follows:

[0082] When the present invention is powered on, the winding coil 112 in the stator 110 generates magnetic induction and drives the rotor 136 to rotate in a positive high-speed direction, and the rotor 136 drives the rotating shaft 116 to rotate synchronously at a high speed.

[0083] In the process that the rotor 136 drives the rotating shaft 116 to rotate at a high speed in the forward direction, the rotating shaft 116 drives the two second ring sleeves 143 to rotate synchronously, and the two second ring sleeves 143 respectively drive the corresponding three circles of first blades 145 to rotate synchronously, and the three circles of first blades 145 on each second ring sleeve 143 draw out the air in the space where the rotor 136 and the stator 110 are located, so that the space where the rotor 136 and the stator 110 are located maintains a continuous negative pressure environment, reduces the magnetic flux resistance in the motor and reduces the noise caused by air friction in the motor. At the same time, the cooperation of the ring 146 on the first blade 145 on the second ring sleeve 143 and the second nut 152 or the rubber ring 147 on the inner wall of the first ring sleeve 108 forms a certain closed environment in the space where the stator 110 and the rotor 136 are located, ensuring that the negative pressure environment therein does not change significantly.

[0084] While the two exhaust structures 142 are performing negative pressure evacuation on the space where the stator 110 and the rotor 136 are located, the working fluid in the special-shaped heat pipe 113 absorbs heat and vaporizes, and quickly moves toward the exposed L end thereof and forms condensation and heat dissipation at the L end. The condensed and liquefied working fluid in the special-shaped heat pipe 113 is circulated to the wall surface of the stator 110 under the action of the capillary suction structure 114 to absorb heat and cool the stator 110.

[0085] At the same time, the working medium in the heat absorption groove 120 in the rotating shaft 116 absorbs heat and vaporizes, and quickly moves to the circular groove 119 and the fifth ring sleeve 162 to condense and release heat. The heat released by the condensed working medium in the fifth ring sleeve 162 is dissipated outward through the third heat sink 163. The working medium condensed and liquefied in the circular groove 119 and the fifth ring sleeve 162 circulates inward along the fifth ring sleeve 162, the circular groove 119 and the drainage groove 121 in the heat absorption groove 120 under the action of centrifugation. The capillary suction structures 114 inside are distributed at intervals in the circumferential direction and adjacent drainage grooves 121 are connected by staggered connecting ports 122, so that the drainage grooves 121 with the capillary suction structure 114 will partially intercept the reflowing working medium through the connecting ports 122 when the drainage grooves 121 without the capillary suction structure 114 guide the liquid working medium inward for reflux, so that the liquid working medium can be evenly distributed on the wall surface of the range where the rotor 136 is located in the heat absorption groove 120 during the circulation reflux process, thereby ensuring uniform heat absorption and cooling of the rotor 136 by the working medium.

[0086] At the same time, the rotating shaft 116 drives the fan 157 to rotate synchronously and rapidly, and the fan 157 discharges the heat dissipated by the third heat sink 163, the air drawn out by the exhaust structure 142, and the heat dissipated by the second heat sink 115 at the end of the special-shaped heat pipe 113 through the heat dissipation groove 168 on the second end cover 166 and the heat dissipation hole 102 on the wall of the casing 101.

[0087] When the rotating shaft 116 rotates in the reverse direction, the rotating shaft 116 delivers air to the space where the stator 110 and the rotor 136 are located through the two exhaust structures 142 to maintain a short positive pressure state.

[0088] The built-in rotor 136 in the present invention can take into account the principles of the surface permanent magnet motor and the reluctance synchronous motor. When the rotor 136 rotates at high speed and low torque, the control unit controls the angle between the rotating magnetic field pole and the rotor 136 pole to be small, the back electromotive force of the stator 110 is small, and the torque mainly comes from the reluctance synchronous motor. When the rotor 136 rotates at low speed and high torque, the control unit controls the angle between the rotating magnetic field pole and the rotor 136 pole to be large, the back electromotive force of the stator 110 is large, and the torque mainly comes from the permanent magnet synchronous motor.

Claims

1. An energy-saving and environmentally friendly AC motor for converting AC power into kinetic energy. It is characterized in that include: A cylindrical casing, wherein the inner wall and the outer wall of the casing are respectively provided with a stator and a control box, the winding coil in the stator adopts distributed winding, a plurality of slots evenly distributed in the circumferential direction are provided on the end surface of the stator, an L-shaped special-shaped heat pipe with an exposed end bent toward the axial direction of the casing is inserted in the slot, a capillary structure is provided on the inner wall of the special-shaped heat pipe, a plurality of second heat sinks are provided on the exposed L end of the special-shaped heat pipe, a first end cover and a second end cover are respectively installed at both ends of the casing by bolt sealing, a plurality of heat dissipation grooves are evenly provided on the second end cover, a first ring plate is provided in the casing, The first ring plate and the first end cover are distributed at both ends of the stator, a rotating shaft is arranged in the first circular hole in the middle of the first end cover and the first ring plate, a plurality of rotors matching with the stator are arranged on the rotating shaft, the permanent magnet in the rotor is built-in, two exhaust structures are arranged between the rotating shaft and the inner wall of the first ring plate and the inner wall of the first circular hole for sealing and evacuating the space where the stator and the rotor are located during the forward rotation of the rotating shaft, a heat pipe structure for effectively dissipating heat and cooling the rotor is arranged on the rotating shaft, and a fan is arranged on the rotating shaft for discharging the heat of the second heat sink and the heat pipe structure through the heat dissipation slot on the second end cover; The rotating shaft is formed by four quarter shafts, and the quarter shafts are provided with a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a fifth cylinder, a sixth cylinder and a seventh cylinder. The second cylinder and the sixth cylinder are distributed at both ends of the first cylinder, the first cylinder and the seventh cylinder are distributed at both ends of the sixth cylinder, the first cylinder and the third cylinder are distributed at both ends of the second cylinder, the second cylinder and the fourth cylinder are distributed at both ends of the third cylinder, and the fifth cylinder and the third cylinder are distributed at both ends of the fourth cylinder. Two first key strips are provided on both side edges of the first cylinder, two second key strips are provided on both side edges of the third cylinder, and two third key strips are provided on both side edges of the seventh cylinder. The two first key strips on the adjacent quarter shafts are connected by bolts, the two second key strips on the adjacent quarter shafts are connected by bolts, and the two third key strips on the adjacent quarter shafts are connected by bolts. Positioning grooves and positioning strips are respectively provided on the two right-angled surfaces of the quarter shafts, and the positioning strips cooperate with the positioning grooves on the adjacent quarter shafts, and a sealing strip is provided between the positioning strips and the positioning grooves on the corresponding quarter shafts; The heat pipe structure includes a quarter circular groove, which is arranged on the end face of the fifth cylindrical surface of the quarter shaft, and fan-shaped heat absorption grooves connected with the circular grooves are arranged on two right-angled surfaces of the quarter shaft, and the heat absorption grooves completely pass through all rotors axially, and the inner wall of the large-diameter arc of the heat absorption groove is a conical surface, a screw sleeve is threadedly connected on the fifth cylindrical surface, and a sealing ring is matched with the end of the screw sleeve and the fourth cylindrical surface, and a fifth ring sleeve is arranged on the end of the screw sleeve, and a plurality of circumferentially evenly distributed third ring sleeves are arranged on the outer wall of the fifth ring sleeve. Three heat sinks, the inner wall of the fifth ring sleeve is a conical surface docked with the circular groove, the conical surface of the heat absorption groove, the inner circular wall surface of the circular groove and the inner wall of the fifth ring sleeve are all provided with circumferentially dense drainage grooves, the adjacent drainage grooves are connected by evenly dense connecting ports, a capillary suction structure is arranged in the drainage groove, the capillary suction structures in the drainage groove are circumferentially spaced, the small diameter arc wall and two straight walls of the heat absorption groove are all provided with capillary suction structures, the end of the fifth ring sleeve is threadedly connected with a sealing sleeve matched with the second circular hole in the middle of the second end cover.

2. The energy-saving and environmentally friendly AC motor according to claim 1, It is characterized in that The middle part of the rotor is provided with an axial hole matching with four quarter shafts, the inner wall of the axial hole is provided with four first keyways corresponding to the first key strips on the rotating shaft, and the first cylindrical surface of the rotating shaft is threaded with a first nut for axial positioning of the entire rotor.

3. The energy-saving and environmentally friendly AC motor according to claim 1, It is characterized in that A bearing is matched between the second cylindrical surface and the first groove on the inner wall of the first ring plate, and a bearing is matched between the sixth cylindrical surface and the second groove on the inner wall of the third ring sleeve at the first circular hole.

4. The energy-saving and environmentally friendly AC motor according to claim 3, It is characterized in that A first ring sleeve opposite to the third cylindrical surface is arranged on the first ring plate, a second nut is threadedly fitted on the third ring sleeve, a sealing ring fitted with the first end cover is arranged at the end of the second nut, a retaining ring for positioning the bearing in the third ring sleeve is arranged on the inner wall of the second nut, the two exhaust structures are respectively arranged between the third cylindrical surface and the first ring sleeve and between the seventh cylindrical surface and the second nut, and the fan is arranged on the third cylindrical surface of the rotating shaft.

5. The energy-saving and environmentally friendly AC motor according to claim 4, It is characterized in that The exhaust structure includes a second ring sleeve, which is arranged on the third cylindrical surface or the seventh cylindrical surface. Four second key grooves evenly distributed in the circumferential direction are opened on the inner wall of the second ring sleeve, and the second key grooves cooperate with the second key strip on the third cylindrical surface of the rotating shaft or the third key strip on the seventh cylindrical surface. The outer wall of the second ring sleeve is provided with three circles of first blades with an angle with the axis thereof, and three axially spaced circular rings are arranged on the top of each circle of the first blades, and the circular rings are matched one by one with a plurality of annular grooves formed by rubber rings on the second nut or the inner wall of the first ring sleeve.

6. The energy-saving and environmentally friendly AC motor according to claim 4, It is characterized in that The fan includes a fourth ring sleeve, which is arranged on the third cylindrical surface of the rotating shaft. Four fourth key grooves evenly distributed circumferentially are opened on the inner wall of the fourth ring sleeve, and the fourth key grooves cooperate with the second key strips on the third cylindrical surface. A plurality of second blades evenly distributed circumferentially are arranged on the outer wall of the fourth ring sleeve, and the fourth ring sleeve is locked by a third nut threadedly connected to the fourth cylindrical surface of the rotating shaft.

7. The energy-saving and environmentally friendly AC motor according to claim 1, It is characterized in that The seventh cylindrical end of the rotating shaft is mounted on a round shaft, and the inner wall of the round shaft is provided with four third key grooves evenly distributed circumferentially, and the third key grooves cooperate with the third key strips on the seventh cylindrical surface, and a bolt that cooperates with the threaded groove at the end of the rotating shaft is installed in the countersunk hole in the middle of the end face of the round shaft.

8. The energy-saving and environmentally friendly AC motor according to claim 1, It is characterized in that The first ring plate is provided with a plurality of plug holes corresponding to the slots one by one, the special-shaped heat pipes are inserted into the plug holes and the corresponding slots, the wall surface of the casing is provided with a plurality of heat dissipation holes corresponding to the second heat dissipation fins on the exposed ends of the special-shaped heat pipes, the outer side of the casing is evenly provided with first heat dissipation fins, the bottom of the casing is provided with a base, and a sealing ring is provided between the casing and the first end cover and the second end cover.

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