Electric fan set with improved cooling
FIELD: electric engineering.
SUBSTANCE: invention relates to electric engineering, namely - to electric machines, and deals with the specific features of fixing elements design for electric motors, particularly, fan sets intended for heating, ventilation and/or air-conditioning plants. This invention proposes a device (40) for fixing electric motor (16) containing accommodating seat (41) for motor installation with a wall (42). According to the invention, the device (40) for fixing electric motor (16) implemented so that the first (18A) and second (18B) air pumping element can be rotated. The air pumping element includes accommodating seat (41) to install electric motor (16) and a wall (42). Besides, the obstructing elements (60, 62; 72, 74, 76; 80) are placed between the electric motor (16) and accommodating seat (41) wall (42). The obstructing elements are implemented so that they can obstruct air flowing between electric motor (16) and wall (42) of accommodating seat and air flow be redirected through electric motor (16).
EFFECT: improved cooling of electric motor and ensured control of different heating, ventilation and/or air conditioning equipment parameters.
21 cl, 9 dwg
The object of the present invention is a device for mounting an electric motor, in particular electroinsulating unit designed for installations of heating, ventilation and/or air-conditioning.
In particular, the invention relates to a device for fastening an electric motor with improved cooling.
From prior art it is known device mounting torque turbine motor comprising a housing bounding the socket for the installation of the engine casing, the peripheral wall connected to the front wall. The peripheral wall is made discontinuous with the formation of the cooling channels of the engine. The channel is limited by two lateral walls connected to the front wall by means of the inclined reflective walls.
Such a device is described in particular in documents FR 2836730 and EP 0805276.
Known constructions allow to cool the motor through the cooling channels, is made in the case in which the engine, and designed to divert part of the air flow supplied to the turbine.
However, such devices are not well optimized for optimal cooling, as they deliver airflow to the base of the engine. Ultimately, some of this air flow enters the skin the x motor to provide cooling, while the rest flows around the motor housing and, therefore, does not contribute to lowering the temperature of the engine.
In addition, as described in documents FR 2836730 and EP 0805276 the units equipped elektroindustrie units with two-stage turbine, due to the lack of closed support of the electric motor, it is difficult to perform the channels for cooling, to ensure the normal circulation of the air flow in the casing of the engine.
The present invention is to eliminate the aforementioned drawbacks.
For this proposed mounting of the motor containing the bracket to install it with the wall and means overlapping located between the electric motor and the wall of the socket.
Thanks to the invention it is possible to create an obstacle to the air flow between the electric motor and the wall of the socket. As a result, the circulation of the air flow mainly occurs inside the electric motor, and thus, its cooling.
In addition, under alternative execution tools contain overlapping the first portion, connected to an electric motor and at least one second part that is connected with socket.
Alternatively, sredstvopovysheniya connect the electric motor and the bracket and executed, in particular, in the form of a single detail.
Alternatively, the first and second parts of overlapping performed separately from each other. In this design, the first and second parts of the tools overlap, interact, due to match the shape and/or form a labyrinth for air flow.
According to another preferred variant implementation, the means of overlapping is made in the form of an insert that is installed between the electric motor and the wall of the socket.
According to different variants of execution of the insert is a three-dimensional part or at least one plate. Preferably the plate and/or three-dimensional part, forming a paste made of foam or elastomer, or rubber. In an alternative embodiment, additional plate and/or three-dimensional part, forming a paste, a combination of hard plastic and soft plastic material.
Preferably, the motor causes the rotation of the first and/or second means (tools) air injection.
According to this variant implementation, the first device of air injection includes an indoor drum, and the second means of air injection includes an outdoor drum.
Another object of the invention is electroindustry the unit containing erately electric motor, in which is located an electric motor and which includes a device for fastening an electric motor having the above distinctive features.
In particular, preferably in electrofiltration the unit has at least one Ulita containing at least one channel of the cooling of the motor.
Other advantages and features of the present invention will be clearer from the following description, provided solely as an illustrative example with reference to the accompanying drawings.
Figure 1 shows the device of heating, ventilation and/or air conditioning, containing electroindustry unit, equipped with a device for fastening in accordance with the present invention, a perspective view.
figure 2 shows electroindustry unit, equipped with a device for fastening in accordance with the present invention, a perspective view.
figure 3 shows the connection of the two parts of the fastening device of the engine around the sleeve electroinsulating unit in accordance with the present invention, a perspective view with a spatial separation of the parts.
figs.4 and 5 show, respectively, a view in section along the Central plane And figure 3, a view in cross section along b-b In figure 3 the first version of run-in with the and with the present invention.
figure 6 and 7 show, respectively, a view in section along the Central plane And figure 3, a view in cross section along b-b In figure 3 of the second variant of execution in accordance with the present invention.
on Fig and 9 are shown, respectively, a view in section along the Central plane And figure 3, a view in cross section along b-b In figure 3 the third option is run in accordance with the present invention.
Shown in figure 1, the housing 10 of the device of heating, ventilation and/or air conditioning a vehicle made with the possibility of integration into the dashboard of the vehicle, as a rule, inside the cabin. A detailed description of the overall design of the device is omitted, because its symptoms in themselves known.
In the upper part of the housing 10 includes a casing 12, and electroindustry unit 14 installed in the casing 12 with the possibility of removal. Electroindustry unit 14 has a Central electric motor 16 (the drawing is not visible), resulting in a rotation of two turbine 18A and 18B mounted on the shaft 20 of the engine on either side of him. The trubinov 18A and 18B are made with facility, respectively, in two common 22 of the casing 12, which provide the direction and speed of the air flow during rotation of the turbines.
Turbine 18A and 18B are of known construction. They contain a number of blades of the 19th century, between the United Soboh the crown 19S. The number of blades connected to the hub 19D through the rotor 19 of the drum type. The shape and geometry of the drum 19 is also in themselves known. The drum 19 can contain holes 19A, forming an outdoor drum, or may be made solid and contain no holes, forming a closed drum.
The housing 10 has openings 24 access along the side in the end region of the casing 12 and in the direction of the mounting axis YY, which corresponds to the common axis of the shaft 20 of the electric motor 16 and the turbine 18A, 18B. Thus, electroindustry unit can be installed and removed by moving in the axial direction along the axis YY, which corresponds to the axial direction of the motor shaft 16. Figure 1 electroindustry unit 14 shown during the extraction, and the extraction operation is carried out in the direction of the arrow F along the axis YY.
Of course, you can provide another option installation electroinsulating unit 14 in the housing 10, other than those described, in particular, into the casing 12. In particular, it can be installed by removing the upper part of the casing 12.
Holes 24 of the access form the air inlets of the two greenshank 22 located on the right and left sides of the body 10, as shown in the example presented in figure 1.
The access port 24, which forms the air intake equipped with the right vypuskni the air channel (not shown) and the left inlet of the air channel 28.
Alternatively, the channel 28 can be performed also removable to facilitate Assembly and disassembly electroinsulating unit 14 on the one or on the other side of the enclosure.
Thus, the air flow taken from the interior and/or outside of the vehicle, enters the casing through the channels 26 and 28, is accelerated in the common 22 the relevant turbines 18A and 18B and is pumped into the casing 10.
Figure 2 and 3 separately shows electroindustry unit 14, which contains the holder 40 of the engine, forming the mounting device is of General circular form, which covers the electric motor 16 and is located between the two turbines 18A and 18B. The holder 40 of the engine includes an outer wall 42 total round cylindrical shape. According to this exemplary embodiment, the diameter of the outer wall 42 of the holder 40 of the engine exceeds the diameter of the turbine 18A and 18B, but less than the diameter of the inner wall of the casing 12 of the housing 10. On the periphery of the outer wall 42 is made projections 44 that communicate, respectively, with cuts made on the receiving side of the casing 12.
Installation electroinsulating unit 14 into the casing 12 to provide locking by turning the holder of a motor in the casing, the share of turnover, for example, a quarter turn in the direction defined by the going down of the projections 44 of the holder 40 of the engine into the corresponding cutouts ukazuje 12. In other words, this is a bayonet connection.
Between the electric motor 16 and the holder 40 engine fitted sleeve 50. The sleeve 50 is installed around the motor 16 and is made preferably of a plastic material. She has a cylindrical wall 52 General circular cross-section and dampers 54, providing for mounting of the holder 40 of the engine under conditions that allow to absorb engine vibration.
As shown, particularly in figure 3, the holder 40 of the engine contains two parts 40A and 40B, each of which has the shape of a half ring. Part 40A and 40B made with the possibility of connection between themselves and around the sleeve 50, covering the motor 16. The connection of the two parts 40A and 40B forms a socket 41 for installation of the electric motor 16. Figure 3 shows the projections 44, which provides the locking of the holder of the motor in the casing 12 of the housing 10.
Examples of implementation, the description of which follows, is based on the above electrofiltration Assembly, therefore, the position in which figure 1 is a-3 depicts elements in common with elements in figure 4-9, remain the same.
According to the first exemplary embodiment, figure 4 and 5 shows the holder 40 of the engine containing means 60 and 62 overlap, located between the motor 16 and the outer wall 42 of the holder 40 of the engine.
According to the about this option means overlapping in the form of plates 60 and 62, is inserted between the motor 16 and the holder 40. In particular, the first set of plates 60 one end connected to the outer wall 42 of the holder 40 of the engine. The other end 64 of the plates 60 is removed from the outer wall 42 of the holder 40 of the engine at a distance less than the distance separating the outer wall 42 of the holder 40 from the electric motor 16. In particular, if the electric motor includes a sleeve 50, designed for mounting in the holder 40, the radial size of the edge 64 is less than the distance separating the outer wall 42 of the holder 40 of the sleeve 50, covering the motor 16.
The outer wall 42 of the holder 40 is equipped with several plates 60. In the example shown in figure 4, there are three records. They are displaced in the axial direction along the axis YY.
Similarly, the second set of plates 62 is connected one end with a sleeve 50 that is designed to hold the motor 16 in the holder 40. The other end 66 of the plates 62 is removed from the outer wall of the sleeve 50 by a distance less than the distance separating the outer wall 42 of the holder 40 of the engine and the sleeve 50.
The sleeve 50 includes multiple plates 62. In the example shown in figure 4, there are three records. They are displaced in the axial direction along the axis YY.
Plates 60 and 62 are interleaved in a relationship is to each other. So, if you look in the direction of the axis YY from left to right in figure 4, you can see the first plate 60, and then the first plate 62, then the second plate 60, followed by the second plate 62, and, finally, the third and last plate 60 and the third and last plate 62.
Thus, the plates 60 and 62 form a labyrinth for the flow of air from the inner chambers 100 greenshank 22. Due to the effect of rarefaction between two internal chambers 100 greenshank 22 creates air flow. Due to the location of the plates between the sleeve 50 and the outer wall 42 of the holder 40, an additional head loss. Naturally, the air flow should be a simpler way, where he will have less obstacles and, therefore, experiencing less pressure losses, so it passes through the motor, providing, thus, its cooling by removing heat generated during operation of the rotating parts inside the motor 16.
Coming from the camera 100, the air passes through the cooling channel. Then it passes through the engine, direct the jet of brushes and the rotor of the motor. The cooling is carried out by blowing air of these two components of the electric motor. The air exits from the electric motor side, opposite the entrance.
The example described with reference n is 4 and 5, contains 3 sets of plates 60 and 62. However, this number is not limited. In particular, depending on the needs and the desired reduction of pressure you can increase or decrease the number of sets of plates 60 and 62.
This also applies to the design of the sets of plates 60 and 62, in this example, and forming a labyrinth for air flow. The present invention also covers all other examples, allowing you to create obstacles in the space between the sleeve 50 and the outer wall 42 of the holder 40 of the engine. In particular, it is possible to use elements of the appropriate shape, such as sinusoidal.
Finally, this option, you can also apply for electroinsulating unit with only one turbine. In this alternative embodiment, the cooling air stream normally flows through the channel described in the documents FR 2836730 and EP 0805276.
According to alternative implementation, to facilitate installation of the Assembly into the holder 40 engine sets of plates 60 and 62 are mounted on the insert forming an independent part. This insert is introduced into the space between the outer wall 42 of the holder 40 of the motor and the sleeve 50 of the electric motor 16. The dimensions of the insert define so that it is adjoined to the outer wall 42 and the sleeve 50, no OST is opened at that gap.
The second alternative execution are presented in Fig.6 and 7. According to this variant implementation, the insert 70 is placed in the space between the outer wall 42 of the holder 40 of the motor and the sleeve 50 of the electric motor 16. The insert 70 includes an inner ring 72 and the outer ring 74. Rings 72 and 74 fit so that they are ideally interacted with the sleeve 50 and the outer wall 42, respectively, and that between these elements had no gap.
For closing the remaining space of the inner ring 72 and the outer ring 74 connecting plate 76. The plate has a relatively small thickness, in particular, less than 10 mm under these conditions, the plate 76 can be compared with a membrane or a flat part. Preferably the rings 72 and 74 are made of hard plastic, in particular polypropylene, while the plate 76 is made of soft plastic, in particular made of elastomer, for example of SEBS (styrene-ethylene-butene (or butylene)-styrene), or of rubber.
The interaction of hard and soft plastic materials allows you to retain the flexibility required to work in conditions created by the vibration motor 16.
The presence of insert 70 allows you to completely close the space between the outer wall 42 of the holder 40 of the motor and the sleeve 50. Thus, through this space cannot is route air flow, which passes through the motor 16, so that its cooling by heat from the rotating parts inside of the engine 16.
According to a not shown variant implementation, the plate 76 may be installed directly between the outer wall 42 of the holder 40 of the motor and the sleeve 50.
The example presented on figure 4 and 5, contains only one plate 76. However, between the rings 72 and 74 can be positioned and a greater number of plates.
Finally, the present invention can be applied in electrofiltration unit equipped with only one turbine. In this embodiment, the cooling air stream normally flows through the channel described in the documents FR 2836730 and EP 0805276.
On Fig and 9 shows a third alternative implementation of the present invention. In this embodiment, the construction is simplified. Thus, the space between the outer wall 42 of the holder 40 of the motor and the sleeve 50 is filled volumetric part 80, for example a block of foam. Three-dimensional part is an element of relatively large thickness, in particular greater than 10 mm Foam part 80 is a material with open or closed pores, therefore, the part 80 may shrink or expand under the influence of vibrations of the engine 16.
In particular, the workpiece 80 can be made of EPDM (terpolymer these is s, propylene and diene, such as hexadiene), PU (polyurethane) or PE (polyethylene).
In the various above-described examples, the means used overlapping to create an additional reduction of pressure in the space. However, the present invention encompasses any means, geometric shape and location of which provide the same effect.
Preferably at least one of the turbine 18A and 18B contains the drum 19 with holes 19A, forming an open drum. This design allows you to create a vacuum under the influence of which the air is absorbed and passes through the engine, and removed through the open drum 19. Thus, the air circulation in the engine easier, and its cooling is improved.
In devices using two turbine 18A and 18B, the first turbine 18A is preferably closed by the drum, and the second turbine 18V - with an open drum.
Similarly, to facilitate air circulation in the mounting device, it can be integrated with the wall of the common greenshank 22, which directs the air into the motor. For example, a wall of a common greenshank 22 may be made in the form of a conical ring or in the form of channels in an L-shape. This geometry is disclosed in document EP 0805276.
All of the above examples are not limiting. The present invention also covers combine the AI various embodiments.
The present invention is preferably intended for use in installations of heating, ventilation and/or air conditioning of motor vehicles, in which the device in accordance with the present invention is executed integrated in the instrument panel of the vehicle to allow control of the various parameters of the installation of heating, ventilation and/or air-conditioning.
Of course, the invention is not limited to the above-described variants of execution, provided solely as an example and encompasses other embodiments of the who expert can implement in the scope of the claims.
1. The device (40) securing the motor (16), made with the possibility of bringing into rotation of the first (18A) and second (18B) means to discharge air containing socket (41) for installation of the motor (16) having a wall (42), between the electric motor (16) and the wall (42) of the socket (41) tools installed(60, 62; 72, 74, 76; 80) overlapping, arranged to prevent the passage of air flow between the electric motor (16) and the wall (42) the socket and with the possibility of the direction of air flow through the electric motor (16).
2. The device according to claim 1, in which means(60, 62; 72, 74, 76; 80) prekrivanjocega the first part (62, 72, 80)connected to an electric motor (16), and at least one second part (60, 74, 80), connected with the wall (42) of the socket (41).
3. The device according to claim 1, in which the electric motor (16) and the wall (42) of the socket (41) are connected by means of(60, 62; 72, 74, 76; 80) overlapping.
4. The device according to claim 1, in which means (72, 74, 76; 80) overlapping is made as a single part.
5. Device according to any one of claims 1 to 3, in which the first part (62) and the second part (60) means (60, 62) overlapping performed separately from each other.
6. The device according to claim 5, in which the first part (62) and the second part (60) means (60, 62) overlap, and interact with each other due to the shape-matching.
7. The device according to claim 6, in which the first part (62) and the second part (60) form a labyrinth for the air flow through the shape-matching.
8. Device according to any one of claims 1 to 4, in which means (72, 74, 76; 80) overlapping is made in the form of an insert that is installed between the electric motor (16) and the wall (42) of the socket (41).
9. The device according to claim 8, in which the insert (72, 74, 76; 80) is a three-dimensional part (80).
10. The device according to claim 8, in which the insert (72, 74, 76; 80) represents at least one plate (74).
11. Device according to any one of p or 10, in which forming the insert plate (74) and/or three-dimensional part (80) is made of foam.
12. Device according to any one of p or 10, in which forming the insert plate (74) and/or three-dimensional part (80) is made of elastomer.
13. Device according to any one of p or 10, in which forming the insert plate (74) and/or three-dimensional part (80) is made of rubber.
14. The device of claim 10, where forming the insert plate (74) and/or three-dimensional part (80) are a combination of hard plastic and soft plastic material.
15. The device according to claim 11, where forming the insert plate (74) and/or three-dimensional part (80) are a combination of hard plastic and soft plastic material.
16. The device according to item 12, which form the insert plate (74) and/or three-dimensional part (80) are a combination of hard plastic and soft plastic material.
17. The device according to item 13, which form the insert plate (74) and/or three-dimensional part (80) are a combination of hard plastic and soft plastic material.
18. The device according to claim 1, in which the electric motor (16) is arranged to bring into rotation means (18A, 18B) of air injection.
19. The device according to claim 8, in which the first device (18A) of air injection includes an indoor drum, and a second tool (18V) discharge air which contains an outdoor drum.
20. Electroindustry unit containing an electric motor (16)located in the holder, characterized in that it contains a device (40) securing the motor (16) according to any one of claims 1 to 19.
21. Electroindustry Assembly according to claim 20, containing at least one Ulita (22)having at least one channel of the cooling of the motor (16).
SUBSTANCE: electric motor has a circular segmented stator core, laminated from sheets of electric steel, in a stand, with three-phase winding laid into core slots, inside which there is a rotor installed in the form of the mill body, outside of which in grooves there are permanent magnets arranged from alloy Nd-Fe-B (neodymium - iron - boron), and between them there are electroconductive rods of short-circuited winding, and steel armoured boards laid in shock absorbers are fixed inside to the body with screws.
EFFECT: reduced material intensity of electric motor manufacturing, higher efficiency of energy transformation and reduction of operating costs.
FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering and electrical machine building and can be used in three-phase double-speed cage asynchronous motors. The double-winding stator of an asynchronous motor has m = 3 - phase, 2p1 = 10- and 2p2 = 12-pole lap windings, placed in z =180 slots, each of which is symmetrical with m' = 6 - zone of uniformly displaced windings, placed in slots in two layers. According to this invention, of the K = z windings with numbers from 1K to (z)K, the 2p1 - pole winding relates to K/2 windings with odd numbers 1K, 3K, …, (z-1)K, each containing wk1 turns and connected in 6p1 sub-groups of windings with q'1 = 3 neighbouring windings in each, and the 2p2 - pole winding relates to K/2 windings with even numbers 2K, 4K,…, (z)K, each containing wk2 turns and connected, when q'2 = 5/2, in 6p2 alternating three- and two sub-groups of windings. All windings have slot pitch yk= 15, where q'1 = z/12p1 and q'2 = z/12p2.
EFFECT: easier manufacture and increased use of active materials while simultaneously reducing amount of insulating materials used, as well as increase in differential scattering coefficients σD% of the given windings of the double-winding stator when Z = 180.
FIELD: naval electric engineering, in particular, immersed electric machines which may be used in composition of electric propulsion plant of underwater manned and unmanned small-dimension objects with unlimited immersion depth, and also as maneuvering propulsion devices, active rudders of any underwater or above-water objects.
SUBSTANCE: in combined electric propulsion plant, containing a screw built into hollow cylindrical rotor, stator with windings and bearing shields, combined in single structure, an asynchronous electric motor with hollow three-layered rotor is used, which is made in form of assembly of three concentric cylinders of varying thickness of various materials with predetermined electromagnetic properties, in accordance to the invention, external cylinder with thickness hext combines functions of working element and screen and has screw-groove profile on the surface, middle working cylinder with thickness hwrk, in which working vortex currents are induced, is made of separate segments in amount of nsegm, each segment has clean longitudinal grooves in axial direction in amount of ngrv, all segments are mutually closed on ends with current-conductive short-circuit rings, internal cylinder with thickness nin, acting as magnetic duct, composed of separate plates 0,5-2 mm thick and covered by protective sealing screen on the outside, while geometric dimensions of rotor elements are selected from ratios hext=(2-2,5)Δν≈2-3mm, hwrk=0,9Δ2, hin=(1,2-1,5)Δ3, hk=Δν, ak=0,7-1mm, vk=3-3,5mm, nsegm=2p, hp=(0,6-0,7)Δ2, an=1,5-2mm, Vn=τ/4, where Δν, Δ2, Δ3 - depth of penetration of magnetic field into corresponding cylinder, hK, aK and vk - respectively, depth, width and step of screw groove, 2p - number of poles, hp, ap and vk - respectively, depth, width and distance between longitudinal grooves, τ - polar division of rotor, ν - harmonic of high order field.
EFFECT: suggested combined electric propulsion plant with asynchronous motor makes it possible to fully realize all advantages of asynchronous motors with multi-layer hollow rotor during their operation in composition of propulsion electric plats; motors of aforementioned design are simpler to manufacture as opposed to synchronous ones with constant magnets, are powered by standard three-phased network, controlled by standard launch-control equipment, have no negative influence on powering network, have reduced vibration, ensure best energy characteristics (efficiency and cos φ) with nominal load, and high launch momentum at low launch current, soft mechanical characteristic and high switching speeds improve main operational characteristics of the plant in transfer modes (launch, reverse, rotation frequency adjustment) and increase its efficiency as a whole.
3 cl, 3 dwg
FIELD: electrical engineering.
SUBSTANCE: proposed motor-fan unit that can be used, for instance, in mining mechanical engineering is built around squirrel-cage induction motor and has frame with stator and rotor mounted therein. Novelty is that rotor carries fan blades, stator and rotor have conical surfaces, angles at vortices of stator and rotor cones are greatly different with respect to their contact between mentioned conical surfaces in absence of their wedging to afford antifriction bearing function, and stator mounts cleat preventing rotor-to-stator shift , for instance in axial direction.
EFFECT: simplified design at enhanced operating reliability of motor-fan unit.
1 cl, 2 dwg
FIELD: electric engineering, in particular, engineering of rotary contact devices.
SUBSTANCE: rotary contact device has contact couples made of smooth current-conductive rings and rings with leafs sliding along the latter, while these rings are held on electric-insulating bases, some of which, forming moving portion, can rotate relatively to others, which form immovable portion of device, rotary portion is made in form of electric engine rotor, meant for mounting devices and mechanisms, on external surface of rotor permanent magnets are glued, and magnetic duct is pressed into body together with winding, on rotor, sliding contacts are held, immovable portion of device has carrier, held on base, mounted on the body. In the carrier, rotation angle indicator may be held.
EFFECT: possible use of rotary contact device for rotation of devices and mechanisms held thereon, excluding separate engine and decreasing system dimensions.
2 cl, 2 dwg
FIELD: electrical engineering; gearless drives primarily used for vehicles.
SUBSTANCE: proposed motor has circular stator core with permanent magnets symmetrically disposed on its outer and inner surfaces over its circumference in alternating polarity and through core thickness in opposing polarity; it also has double-section rotor one of whose sections encloses stator and functions as external section while other section is disposed inside stator and functions as internal section. In addition motor has commutator-type current distributor and current collector both mounted for contacting commutator-type distributor segments and are connected to area of electromagnets of mentioned rotor sections.
EFFECT: enhanced motor torque.
3 cl, 2 dwg
FIELD: electrical engineering; electric drives or power generators.
SUBSTANCE: proposed dynamoelectrical machine is set in rotary motion by means of magnetic induction acting in linear electric motors. It has ring-shaped rotor made in the form of flat ring and provided with at least one circular rail engageable with sliding guides; it also has stator that carries inductance coil and interacts with at least one part of rotor. Circular rail is disposed outside or inside with respect to stator.
EFFECT: simplified design, facilitated maintenance, enhanced reliability.
8 cl, 20 dwg
FIELD: electric engineering, methods for mounting and positioning electric motor in electric motor support.
SUBSTANCE: electric motor (1) contains driving shaft (3), which projects from two ends of aforementioned electric motor (1) along longitudinal rotation axis (X-X) and having shifted gravity center (B) relatively to driving shaft (3), and also positioning means (11a, 12a), made with possible ensuring of blocking connection to corresponding connectable positioning means (9a, 10a) of support (5), where positioning means (11a, 12a) are shifted for given shifting angle (ω), measured between projection onto one plane (Σ), which is perpendicular to rotation axis (X-X), two straight lines (S1, SB), which extend from rotation axis (X-X) perpendicularly and pass through aforementioned positioning means (11a, 12a) and aforementioned gravity center (B), respectively. Suggested method for installation and positioning of electric motor (1) in support (5) of electric motor includes stages, according to which electric motor (1) abuts against driving shaft (3) to ensure capacity for turning electric motor (1) around driving shaft (3) for value of compensating angle (γ) due to gravity force, to move positioning means (11a, 12a) to position, which ensures connection to connectable positioning means (9a, 10a) and installation of electric motor (1) in support (5).
EFFECT: simplification of design of electric motor made with possible installation in a support, ensured automation of assembly of motor together with support, improved dynamic balance of a device which includes such electric motor.
3 cl, 6 dwg
SUBSTANCE: asynchronous machine (VAMOGW) includes frame (1) with multipack stator (2) with winding (3), at monolithic shaft (6) made of steel 20X13 there is multi-pack rotor (7) with copper bars (8) and cafe rings (9). Between packs of stator (2) and rotor (7) there is non-magnet gap (5) through which cooling stratum water passes. In order to prevent contact corrosion of electric steel of stator and rotor packs and copper of rotor winding discs (10) of magnesium alloy are pressed-fit between packs on rotor shaft and rings (4) of the same alloy are pressed-fir between stator packs. Discs (10) and rings (4) have close electric contact with packs of rotor (7) and stator (2).
EFFECT: effective electrochemical protection from contact corrosion for internal parts of multipack rotors and stators of vertical open electric machines at their immersion to aggressive stratum water - electrolyte.
SUBSTANCE: asynchronous machine (AMV OGW) contains housing (1) where multipack stator (2) with winding (3) is accommodated, on shaft (5) made of 20X13 steel, multipack rotor (6) with screw-groove multistart thread is mounted for strata water pumping via non-magnetic operating clearance (10). To equalise temperatures throughout the machine the inlet of cold and the outlet of heated strata water is executed through alternating by length symmetrical groups oh holes in the housing (14-16) and (17-18), shifted by angle β/2 relative to each other, and the holes along cross-section radius are shifted by angle β in each group. Flow of strata water via three hemispheric channels (21) between stator and housing, shifted by 120° equalises temperature along stator length.
EFFECT: creation of effective system of cooling with surrounding strata water for internal active parts of multipack electric machines of vertical open configuration for oil-and-gas wells.
2 cl, 3 dwg
SUBSTANCE: invention refers to the field of electric engineering, namely to cooling system of electric machines of cylindrical design. Proposed electric machine comprises stator, including winding of stator, body for stator location, rotor and air gap, having, in general, a cylindrical configuration. Multiple radial first channels of cooling gas arranged along circumference is provided in the stator core. Jets of cooling gas are directed in the area of front part of winding, which is relatively distanced from stator core in order to provide for its forced cooling. Flows of cooling gas are directed to sections of front part of winding, which is located between areas with forced cooling of front part of winding and according front surface of stator core. At the same time electric machine comprises at least one of injection and suction fans, and in specified body for stator location there are the first, second, third and fourth openings. Besides, injection fan is connected along flow of cooling gas with specified first channels of cooling gas, and also to specified first, second, third and fourth openings of specified body; and suction fan is located in connection along flow of cooling gas with those spaces in electric machine, which receive cooling gas, released from air gap and specified first, second, third and fourth holes. At the same time specified first and second holes have smaller diametre than specified third and fourth specified holes of body for stator location.
EFFECT: provides for intense cooling of front part of electric machine stator winding and elimination of damage of insulation of winding wires, and also low consumption of power in proposed design of cooling system suitable for electric machines with high speeds of rotation.
19 cl, 1 dwg
FIELD: electrical and mechanical engineering; revolving electrical machines such as turbogenerators using closed-circuit cooling cycle.
SUBSTANCE: proposed air-cooled electrical machine using closed-circuit cooling cycle has frame accommodating stator and closed with end shields, each of the latter being provided with box-shaped sections disposed around rotor and ducts used to pass sealing air to box-shaped section from electrical-machine cooling system; in order to prevent ingress of dirt to box-shaped sections the latter are divided into compartments by means of transverse partitions; ducts feeding air to box-shaped space of each compartment are disposed along rotor revolution immediately past the partitions.
EFFECT: enhanced efficiency of electrical machine protection against ingress of dirt due to creating more efficient air flow preventing ingress of dirt from environment.
2 cl, 3 dwg