CN117394568A - Three-phase motor and compressor - Google Patents
Three-phase motor and compressor Download PDFInfo
- Publication number
- CN117394568A CN117394568A CN202311690176.XA CN202311690176A CN117394568A CN 117394568 A CN117394568 A CN 117394568A CN 202311690176 A CN202311690176 A CN 202311690176A CN 117394568 A CN117394568 A CN 117394568A
- Authority
- CN
- China
- Prior art keywords
- contact
- winding
- head end
- head
- protrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims abstract description 118
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- ACGUYXCXAPNIKK-UHFFFAOYSA-N hexachlorophene Chemical compound OC1=C(Cl)C=C(Cl)C(Cl)=C1CC1=C(O)C(Cl)=CC(Cl)=C1Cl ACGUYXCXAPNIKK-UHFFFAOYSA-N 0.000 claims description 35
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
- H02P25/184—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention provides a three-phase motor and a compressor, comprising: the iron core is arranged in the shell and is provided with a plurality of annularly distributed winding grooves, two wiring ends of the first winding are respectively a first head end and a first tail end, two wiring ends of the second winding are respectively a second head end and a second tail end, and two wiring ends of the third winding are respectively a third head end and a third tail end; the winding switcher comprises a base and a switching mechanism; the first head end, the first tail end, the second head end, the second tail end, the third head end and the third tail end are all arranged in the base; the switching mechanism comprises a switching rod and a first short-circuit part, wherein the first head end, the second head end and the third head end are all connected with the first short-circuit part when the switching rod is in a first working position, the first head end is connected with the second tail end when the switching rod is in a second working position, the second head end is connected with the third tail end, and the third head end is connected with the first tail end so as to solve the technical problem that the three-phase motor wiring mode in the prior art is complicated to switch.
Description
Technical Field
The invention belongs to the technical field of three-phase motors, and particularly relates to a three-phase motor and a compressor.
Background
The winding switching technology adopts a triangle wiring mode when the compressor is in high speed, adopts a star wiring mode when the compressor is in low speed, can realize the full-frequency-band efficient operation of the compressor, is a research hot spot in industry in recent years, but is generally realized by adding a switching device through a control device in industry, and increases the design difficulty of a controller. In addition, two groups of strong electric leads are required to be led out of the compressor, two groups of connecting columns are required to be designed corresponding to the upper cover, extremely high requirements are put on the positions, the layout and the electric reliability of the lead-out wires, and particularly for a small-sized compressor, the upper cover is limited in size, and enough safety distance is difficult to ensure.
How to simplify the wiring mode of a three-phase motor is a technical problem to be solved at present.
Disclosure of Invention
Therefore, the invention provides a three-phase motor and a compressor, which can solve the technical problem of complex wiring mode conversion of the three-phase motor in the prior art.
In one aspect, the present invention provides a three-phase motor having a housing, comprising:
the iron core is arranged in the shell and is provided with a plurality of annularly distributed winding grooves;
the first winding, the second winding and the third winding are arranged in the winding groove; the two wiring ends of the first winding are respectively a first head end and a first tail end, the two wiring ends of the second winding are respectively a second head end and a second tail end, and the two wiring ends of the third winding are respectively a third head end and a third tail end;
a winding switcher including a base and a switching mechanism; the first head end, the first tail end, the second head end, the second tail end, the third head end and the third tail end are all arranged in the base; the switching mechanism is detachably assembled on the base; the switching mechanism comprises a switching rod and a first short-circuit part, wherein when the switching rod is in a first working position, the first head end, the second head end and the third head end are connected with the first short-circuit part, when the switching rod is in a second working position, the first head end is connected with the second end, the second head end is connected with the third end, and the third head end is connected with the first end.
In some embodiments, the winding switcher is split and comprises a first sub switcher, a second sub switcher and a third sub switcher, and the winding direction of the first winding is opposite to the winding direction of the second winding and the third winding;
the first head end and the second tail end are arranged in the first sub-switcher in a switchable manner, the second head end and the third tail end are arranged in the second sub-switcher in a switchable manner, the third head end and the first tail end are arranged in the third sub-switcher in a switchable manner, and the first head end, the second head end and the third head end can be electrically connected through a short-circuit wire.
In some embodiments, a contact A is disposed within the switching mechanism 32 Contact B 32 Contact C 32 Contact A 11 Contact B 11 Contact C 11 After the switching mechanism is matched with the base, theContact A 32 And the contact B is connected with the first end 32 And the contact C is connected with the second end 32 And the contact A is connected with the third end 11 Is connected with the first head end and the contact B 11 Is connected with the second head end, and the contact C 11 And the third head end is connected with the third head end.
In some embodiments, the base is monolithic, the contact C 11 The contact A 11 And the contact B 11 Are arranged in sequence in a first row, and the contact A 32 The contact B 32 And the contact C 32 A second row;
when the switching lever is in the first working position, the contact A 11 The contact B 11 And the contact C 11 Are all connected with the first short-circuit part; when the switching lever is in the second working position, the contact A 11 With the contact B 32 Connected with the contact B 11 With the contact C 32 Connected with the contact C 11 With the contact A 32 Are connected.
In some embodiments, the switch lever is movable along its length, movement of the switch lever in a first direction places the switch lever in a first operating position, movement of the switch lever in a second direction places the switch lever in a second operating position, the first direction being opposite the second direction.
In some embodiments, the switching lever is provided with a first guide rod, a second guide rod and a third guide rod, wherein the first guide rod comprises a first hinged end and a first touching end, the second guide rod comprises a second hinged end and a second touching end, and the third guide rod comprises a third hinged end and a third touching end; the first hinged end is connected with the contact A 32 Hinged together, the second hinged end is connected with the contact B 32 Hinged together, the third hinged end is connected with the contact C 32 Hinged together;
the first short-circuit piece is provided with a first contact, a second contact and a third contact; when the switching rod is in the first working position, theContact A 11 Is in contact with the first contact, the contact B 11 Is in contact with the second contact and the contact C 11 Is contacted with the third contact; when the switching lever is in the second working position, the first guide rod, the second guide rod and the third guide rod all rotate around the respective hinged ends and enable the first touching end to be in contact with the contact B 11 Is connected with the second touch end and the contact C 11 Is connected with the third touch end and the contact A 11 And (5) connection.
In some embodiments, the switch lever is provided with a first protrusion, and the switch is further provided with an elastic member therein, and the elastic member includes a second protrusion facing the first protrusion; the first protrusion passes over and presses the second protrusion along a surface of the second protrusion when the switching lever is moved outward to a first working position, and the first protrusion passes over and presses the second protrusion along a surface of the second protrusion when the switching lever is moved inward to a second working position.
In some embodiments, the elastic member includes an adjusting rod and a sliding head, a blind hole is provided on the sliding head, an outer end of the adjusting rod is disposed outside the housing of the switcher, an inner end of the adjusting rod is disposed in the blind hole, a spring is disposed between the adjusting rod and a bottom wall of the blind hole, and an end face of the sliding head facing the first protrusion is the second protrusion.
In some embodiments, the winding switch is monolithic, the contact A 11 The contact B 11 The contact C 11 The contact A 32 The contact B 32 And the contact C 32 Distributed according to a row;
a second short-circuit part is also arranged in the winding switching mechanism, and the contact A is provided with 32 The contact B 32 And the contact C 32 As a whole, can be moved simultaneously to bring the contacts a 32 The contact B 32 And the contact C 32 Simultaneously with the second short-circuit member, or with the contact A 32 With the contact C 11 Connected to the contact B 32 With the contact A 11 Connected to the contact C 32 With the contact B 11 Are connected.
In some embodiments, the three-phase motor further comprises a lead device comprising a first wire, a second wire, and a third wire; the first end of the first wire is connected with the first head end, the second wire is connected with the second head end, and the third wire is connected with the third head end; the second end of the first wire, the second end of the second wire and the second end of the third wire are all fixed on the lead device.
On the other hand, the invention also provides a compressor comprising the three-phase motor.
According to the invention, the winding switcher is arranged, so that the head ends and the tail ends of three windings of the three-phase motor are led into the base of the winding switcher, the windings are converted between the star connection and the angle connection through the action of the switching rod of the switching mechanism, and the switching of a winding mode can be realized without changing the existing controller of the three-phase motor, so that the three-phase motor is simple and convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. The drawings in the following description are merely exemplary and other implementations drawings may be derived from the drawings provided without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a stator, a base, a switching mechanism and a lead device of a three-phase motor according to an embodiment of the present invention;
FIG. 2 is a schematic view of the head and tail ends of three windings of a three-phase motor according to an embodiment of the present invention as they are connected to a base in a row;
FIG. 3 is a schematic diagram of the three windings of a three-phase motor according to an embodiment of the present invention with their head ends and tail ends connected to the base in two rows;
FIG. 4 is a schematic diagram of two rows of distributed contacts in a switching mechanism according to an embodiment of the present invention in a star configuration;
FIG. 5 is a schematic view of two rows of distributed contacts in a switching mechanism according to an embodiment of the present invention when the contacts are wired in an angled configuration;
FIG. 6 is a first axial schematic view of a three-phase motor according to an embodiment of the present invention;
FIG. 7 is an enlarged view of E in FIG. 6 according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a row of distributed contacts in a star connection in a switching mechanism according to an embodiment of the present invention;
FIG. 9 is a schematic view of a row of distributed contacts in a switching mechanism according to an embodiment of the present invention when the distributed contacts are wired in an angled configuration;
FIG. 10 is a schematic diagram of pins with different structures on a switching mechanism according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of an embodiment of the present invention with a plurality of winding switches;
FIG. 12 is a schematic diagram of a winding when multiple windings are provided according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of the windings between different coils in a single winding when multiple windings are provided in accordance with an embodiment of the present invention;
fig. 14 is a cross-sectional view of a compressor according to an embodiment of the present invention.
The reference numerals are expressed as:
1. a first winding; 101. a first head end; 102. a first end; 2. a second winding; 201. a second head end; 202. a second end; 3. a third winding; 301. a third head end; 302. a third end; 401. a housing; 402. an iron core; 403. winding slots; 501. a base; 502. a switching mechanism; 503. A switching lever; 5021. a first sub-switch; 5022. a second sub-switch; 5023. a third sub-switch; 601. a first shorting member; 602. a second shorting member; 7011. contact A 32 The method comprises the steps of carrying out a first treatment on the surface of the 7012. Contact B 32 The method comprises the steps of carrying out a first treatment on the surface of the 7013. Contact C 32 The method comprises the steps of carrying out a first treatment on the surface of the 7021. Contact A 11 The method comprises the steps of carrying out a first treatment on the surface of the 7022. Contact B 11 The method comprises the steps of carrying out a first treatment on the surface of the 7023. Contact C 11 The method comprises the steps of carrying out a first treatment on the surface of the 801. A first guide bar; 802. a second guide bar; 803. a third guide bar; 8011. a first hinged end; 8021. a second hinged end; 8031. a third hinged end; 8012. a first touch end; 8022. a second touch end; 8032. a third touch end; 901. a first protrusion;902. a second protrusion; 903. a blind hole; 904. an adjusting lever; 905. a slider; 906. a lead wire device; 907. a first wire; 908. a second wire; 909. a third wire; 910. a spring; 911. the wires are shorted.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. It should be understood, however, that the construction, proportion, and size of the drawings, in which the present invention is practiced, are all intended to be illustrative only, and not to limit the scope of the present invention, which should be defined by the appended claims. Any structural modification, proportional change or size adjustment should still fall within the scope of the disclosure without affecting the efficacy and achievement of the present invention. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The invention provides a three-phase motor and a compressor, which can solve the technical problem that the wiring mode of the three-phase motor in the prior art is complex to convert.
The present invention proposes a three-phase motor having a housing 401, as shown with reference to fig. 1-14, comprising:
an iron core 402, disposed in the housing 401, the iron core 402 being provided with a plurality of winding slots 403 distributed annularly;
a first winding 1, a second winding 2 and a third winding 3, the first winding 1, the second winding 2 and the third winding 3 being arranged in the winding slot 403; the two terminals of the first winding 1 are a first head end 101 and a first tail end 102 respectively, the two terminals of the second winding 2 are a second head end 201 and a second tail end 202 respectively, and the two terminals of the third winding 3 are a third head end 301 and a third tail end 302 respectively;
a winding switcher including a base 501 and a switching mechanism 502; the first head end 101, the first tail end 102, the second head end 201, the second tail end 202, the third head end 301 and the third tail end 302 are all arranged in the base 501; the switching mechanism 502 is detachably assembled to the base 501; the switching mechanism 502 includes a switching lever 503 and a first shorting member 601, where when the switching lever 503 is in a first working position, the first head end 101, the second head end 201, and the third head end 301 are all connected to the first shorting member 601, and when the switching lever 503 is in a second working position, the first head end 101 is connected to the second end 202, the second head end 201 is connected to the third end 302, and the third head end 301 is connected to the first end 102.
When the switching lever 503 moves to the first working position, the first head end 101, the second head end 201 and the third head end 301 are connected with the first short-circuit element 601, that is, the first head end 101, the second head end 201 and the third head end 301 are connected with each other, at this time, three windings of the motor form a star connection, and the connection mode is suitable for starting and low-speed working; the first head end 101 is connected to the second end 202, the second head end 201 is connected to the third end 302, and the third head end 301 is connected to the first end 102, where the three windings form an angular connection, which is suitable for high speed operation. Since the base 501 is arranged on the shell 401 of the three-phase motor, the switching mechanism 502 is detachably assembled on the three-phase motor, and the rotating ring between the star connection and the angular connection of the three-phase motor is realized through the switching rod 503 on the switching mechanism 502; compared with the prior art, on one hand, the controller of the motor is not required to be changed, so that the stability of the existing controller is ensured; on the other hand, only the head ends and the tail ends of the three windings are led to the base 501, and compared with the existing three-phase motor, the three-phase motor is small in modification, simple in control, suitable for popularization and more suitable for improving the existing motor. When the existing motor is improved, the three-phase motor can be switched between the star connection and the angular connection without changing the controller.
The iron core 402 has a plurality of teeth protruding inward, winding slots 403 are formed between adjacent teeth, the winding is wound in a concentrated coil form or is embedded in the winding slots 403, and the winding is isolated from the iron core 402 by an insulating component. The insulation assembly comprises a base 501, wherein a plurality of conductive components which are insulated from each other are embedded in the base 501, and the conductive components are connected with the head end and the tail end of the winding; the switching mechanism 502 is provided with protruding pins, and is connected with the base 501 in a plug-in manner, and the switching mechanism 502 acts to switch the connection modes between windings.
Taking a 9-slot motor as an example, other slot numbers such as 6 slots and 12 slots can be analogically obtained. The windings are wound in concentrated coil form or embedded in winding slots 403, the windings are separated from the iron core 402 by insulating components, in this example, the motor windings are 3 groups, each group is formed by connecting 3 groups of coils in series, and each group of windings has a first end and a last end.
The connection mode between the switching mechanism 502 and the base 501 is connected by a pin, and the pin can be cylindrical, linear or U-shaped.
When the three-phase motor is used for the compressor, the base 501 is arranged on the upper cover of the compressor, so that the wiring mode of the winding is convenient to manually control.
Preferably, as shown in fig. 11-13, the winding switch is split and includes a first sub-switch 5021, a second sub-switch 5022 and a third sub-switch 5023, where the winding direction of the first winding 1 is opposite to the winding direction of the second winding 2 and the third winding 3;
the first head end 101 and the second end 202 are configured in the first sub-switch 5021, the second head end 201 and the third end 302 are configured in the second sub-switch 5022, the third head end 301 and the first end 102 are configured in the third sub-switch 5023, and the first head end 101, the second head end 201 and the third head end 301 can be electrically connected through a short-circuit wire 911.
In this embodiment, the first sub-switch 5021 includes a first sub-base 501 and a first sub-switching mechanism 502, the second sub-switch 5022 includes a second sub-base 501 and a second sub-switching mechanism 502, and the third sub-switch 5023 includes a third sub-base 501 and a third sub-switching mechanism 502. The first head end 101 and the second end 202 are connected and arranged in the first sub-base 501, the second head end 201 and the third end 302 are arranged in the second sub-base 501, and the third head end 301 and the first end 102 are arranged in the third sub-base 501; the first sub-switching mechanism 502 controls the on-off between the first head end 101 and the second end 202, the second sub-switching mechanism 502 controls the on-off between the second head end 201 and the third end 302, and the third sub-switching mechanism 502 controls the on-off between the third head end 301 and the first end 102.
The winding switcher is divided into three switchers, so that the setting position of the three-phase motor is more flexible, the whole space is not needed outside for setting a larger winding switcher, only three smaller spaces are needed, and the applicability of the three-phase motor is improved.
The winding direction of the first winding 1 is different from the winding direction of the other two windings, such as: the motor winding is N groups, each group of windings is formed by connecting K coils in series, and the 1 st coil of one group of windings in every two groups of windings in the N groups of windings is adjacently arranged with the K th coil of the other group of windings. By this arrangement, the first head end 101 and the second end 202 are closer to each other, the second head end 201 and the third end 302 are closer to each other, and the third head end 301 and the first end 102 are closer to each other, so that different sub-switches can be conveniently arranged.
Preferably, as shown in fig. 4-5, the switching mechanism 502 is provided with a contact a therein 32 7011. Contact B 32 7012. Contact C 32 7013. Contact A 11 7021. Contact B 11 7022. Contact C 11 7023, the contact a after the switching mechanism 502 is mated with the base 501 32 7011 and the first end 102, the contact B 32 7012 to the second end 202, the contact C 32 7013 to the third end 302, the contact a 11 7021 is connected with the first head end 101, and the contact B 11 7022 is connected with the second head end 201, and the contact C 11 7023 is connected to the third head end 301.
The head ends and the tail ends of the three windings are only connected to the base 501 and fixed, 6 conductive components insulated from each other are embedded in the base 501, and the head ends and the tail ends of the windings are fixedly connected with the conductive components in the base 501 in a puncturing or welding or plugging mode; the connection mode between the three windings is adjusted by the connection mode between the contacts in the switching mechanism 502, so that the stability of the windings of the three-phase motor is improved, and the switching mechanism 502 can be dismantled due to the fact that the change of the connection mode of the windings is completed in the switching mechanism 502, and the convenience of production and maintenance is improved.
Preferably, as shown in fig. 4-7, the base 501 is unitary, theContact C 11 7023. The contact A 11 7021 and said contact B 11 7022 are arranged in sequence in a first row, contact A 32 7011. The contact B 32 7012 and said contact C 32 7013 is the second row;
the contact A when the switching lever 503 is in the first working position 11 7021. The contact B 11 7022 and said contact C 11 7023 are connected with the first short-circuit element 601; when the switching lever 503 is in the second working position, the contact A 11 7021 and the contact B 32 7012 are connected, the contact B 11 7022 and the contact C 32 7013 are connected, the contact C 11 7023 and the contact A 32 7011 are connected.
By dividing the contacts into two rows, the stability of the connection between the switching mechanism 502 and the base 501 is improved.
Through setting up first short-circuit piece 601, only need the removal of switchover lever 503 can realize star connection and angular connection's switching, it is very convenient, swift, improved the convenience that three-phase motor changed the winding.
Preferably, as shown in fig. 4-5, the switching lever 503 is capable of moving along its length, the switching lever 503 moves in a first direction to place the switching lever 503 in a first working position, and the switching lever 503 moves in a second direction to place the switching lever 503 in a second working position, where the directions of the first and second directions are opposite.
The switching lever 503 is placed in the first working position and the second working position by moving the switching lever 503 along its own axis; the mode can be realized by a manual mode or an electromagnetic driving mode, and is very convenient. In the manual mode, the switching lever 503 is directly pulled or pushed by hand; during electromagnetic driving, a section of magnetic induction piece can be arranged on the switching rod 503, a coil is arranged around the magnetic induction piece, and the moving direction of the switching rod 503 is changed by changing the energizing direction of the coil, so that the electromagnetic driving device is very convenient and is beneficial to realizing rapid conversion. In practical application, the two modes are generally set, electromagnetic control is adopted preferentially, and when the electromagnetic control fails or is inconvenient to use, the electromagnetic control can be manually switched. And the electromagnetic control mode is adopted, the control signal voltage is lower than 24V, and the control signal wire is connected with the compressor through the sealing binding post.
Because the current of the compressor is smaller in the low-speed star-shaped wiring mode of the compressor, the temperature is lower, and the running current of the compressor is larger in the high-speed triangle-shaped wiring mode, and the temperature is higher, the temperature difference in two states can be utilized to achieve the aim of temperature control switching;
for example, a thermosensitive element is arranged for switching action control, and no extra signal control line is arranged. When the motor is just started or the rotating speed is low, the temperature is not too high, and the switching rod 503 is positioned at the first working position, and the motor is connected in a star shape; when the motor speed is high, the temperature rises and the heat sensitive element moves the switching lever 503 to the second working position, where the motor is connected in an angular shape.
Preferably, as shown in fig. 4 to 5, the switching lever 503 is provided with a first guide bar 801, a second guide bar 802 and a third guide bar 803, where the first guide bar 801 includes a first hinge end 8011 and a first touching end 8012, the second guide bar 802 includes a second hinge end 8021 and a second touching end 8022, and the third guide bar 803 includes a third hinge end 8031 and a third touching end 8032; the first hinge end 8011 and the contact a 32 7011, said second hinged end 8021 being hinged to said contact B 32 7012, said third hinged end 8031 being hinged to said contact C 32 7013 are hinged together;
the first shorting member 601 is provided with a first contact, a second contact, and a third contact; the contact A when the switching lever 503 is in the first working position 11 7021 is in contact with the first contact, contact B 11 7022 is in contact with the second contact, contact C 11 7023 is in contact with the third contact; when the switching lever 503 is in the second working position, the first guide bar 801, the second guide bar 802 and the third guide bar 803 all rotate around their respective hinge ends and bring the first touching end 8012 into contact with the contact B 11 7022, the second touching end 8022 is connected with the contact C 11 7023, the third touching end 8032 is connected with the contact A 11 7021 are connected.
Through the arrangement, the switching rod 503 moves to drive the first guide rod 801, the second guide rod 802 and the third guide rod 803 to move simultaneously and change the connection mode of six contacts, so that three windings are converted between star connection and angular connection, and the reliability is high; further, the first guide bar 801, the second guide bar 802 and the third guide bar 803 may be provided as elastic bars with certain toughness, and when the three guide bars are in contact with different contacts, the three guide bars all have certain deformation so as to increase the connection firmness between the guide bars and the different contacts.
Preferably, as shown in fig. 4-5, the switching lever 503 is provided with a first protrusion 901, and the switch is further provided with an elastic member therein, and the elastic member includes a second protrusion 902 facing the first protrusion 901; the first protrusion 901 rides over and presses the second protrusion 902 along the surface of the second protrusion 902 when the switch lever 503 is moved outwardly to the first operational position, and the first protrusion 901 rides over and presses the second protrusion 902 along the surface of the second protrusion 902 when the switch lever 503 is moved inwardly to the second operational position.
"inwardly" means that the switching lever 503 is retracted into the switching mechanism (502), and "outwardly" means that the switching lever 503 is extended out of the switching mechanism (502).
When the switching lever 503 moves outward to the first working position, the first protrusion 901 on the switching lever 503 presses the second protrusion 902 in the switch, and since the second protrusion 902 is a part of the elastic member, the elastic member contracts after being pressed, and when the first protrusion 901 passes over the second protrusion 902, the elastic member expands; likewise, the second protrusion 902 has the same effect on the first protrusion 901 when the switch lever 503 moves inward. The beneficial effects of so setting include: in one aspect, the second protrusion 902 has a blocking effect on the first protrusion 901 that can prevent the switching lever 503 from being accidentally and spontaneously moved from the first working position to the second working position, or from being spontaneously moved from the second working position to the first working position. The stability of the winding switcher is ensured. On the other hand, during manual operation, the blocking effect of the second protrusion 902 on the first protrusion 901 can give a certain motion damping to the person, when the first protrusion 901 is higher than the vertex of the second protrusion 902, the person can feel the difference of acting force required by the motion of the switching lever 503 due to the change of the extrusion force, and further judge the motion position of the switching lever 503, so that the accuracy of the switching lever 503 during manual operation is improved.
The surface of the second protrusion 902 is preferably rounded.
Preferably, as shown in fig. 4-5, the elastic member includes an adjusting rod 904 and a sliding head 905, a blind hole 903 is provided on the sliding head 905, an outer end of the adjusting rod 904 is disposed outside the casing of the switcher, an inner end of the adjusting rod 904 is disposed in the blind hole 903, a spring 910 is disposed between the adjusting rod 904 and a bottom wall of the blind hole 903, and an end surface of the sliding head 905 facing the first protrusion 901 is the second protrusion 902.
The elastic member is provided as the adjustment lever 904 and the slide head 905, and the spring 910 is provided in the blind hole 903 on the slide head 905, so that maintainability of the elastic member is improved. In addition, the spring 910 can be replaced according to the requirement, so as to realize different damping of the second protrusion 902 to the first protrusion 901, and further enable the winding switcher to be applicable to different environments, when the external environment is severe, the elastic coefficient of the spring 910 can be set to be larger, so as to avoid misoperation of the switching rod 503 caused by external replacement.
Preferably, as shown in fig. 8-9, the winding switcher is unitary, the contact a 11 7021. The contact B 11 7022. The contact C 11 7023. The contact A 32 7011. The contact B 32 7012 and said contact C 32 7013 in a row;
a second shorting member 602 is also disposed in the winding switching mechanism 502, and the contact a 32 7011. The contact B 32 7012 and said contact C 32 7013 as a whole can be moved simultaneously to bring the contacts a 32 7011. The contact B 32 7012 and said contact C 32 7013 are simultaneously engaged with the second shorting member 602, or the contact a is made 32 7011 and the contact C 11 7023 is connected with,The contact B 32 7012 and the contact A 11 7021 are connected, the contact C 32 7013 and the contact B 11 7022 are connected.
By making part of contact A 32 7011. Contact B 32 7012 and contact C 32 7013 moves integrally to realize star connection and angular connection of three windings, because a plurality of contacts are installed and distributed in a row, the outer tube of the switching mechanism 502 is long-strip-shaped, and because the base 501 is also long-strip-shaped, the winding switcher can adapt to different external spaces, and the applicability of the three-phase motor is improved.
Preferably, as shown in fig. 1, 2, 12, 13 and 14, the three-phase motor further includes a lead device 906, and the lead device 906 includes a first conductive wire 907, a second conductive wire 908 and a third conductive wire 909; a first end of the first wire 907 is connected to the first head end 101, the second wire 908 is connected to the second head end 201, and the third wire 909 is connected to the third head end 301; the second end of the first wire 907, the second end of the second wire 908, and the second end of the third wire 909 are all secured to the lead assembly 906.
The connection between the three-phase motor and the external power supply can be completed only by one lead device 906, so that the problem of high electrical safety caused by the fact that two groups of lead devices are needed in the prior art is avoided.
On the other hand, the invention also provides a compressor comprising the three-phase motor.
Those skilled in the art will readily appreciate that the advantageous features of the various aspects described above may be freely combined and stacked without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (11)
1. A three-phase motor having a housing (401), comprising:
an iron core (402) disposed in the housing (401), the iron core (402) being provided with a plurality of winding slots (403) distributed annularly;
a first winding (1), a second winding (2) and a third winding (3), the first winding (1), the second winding (2) and the third winding (3) being arranged in the winding slot (403); two terminals of the first winding (1) are a first head end (101) and a first tail end (102) respectively, two terminals of the second winding (2) are a second head end (201) and a second tail end (202) respectively, and two terminals of the third winding (3) are a third head end (301) and a third tail end (302) respectively;
a winding switcher including a base (501) and a switching mechanism (502); the first head end (101), the first tail end (102), the second head end (201), the second tail end (202), the third head end (301) and the third tail end (302) are all arranged in the base (501); the switching mechanism (502) is detachably assembled to the base (501); the switching mechanism (502) comprises a switching rod (503) and a first short-circuit part (601), when the switching rod (503) is in a first working position, the first head end (101), the second head end (201) and the third head end (301) are connected with the first short-circuit part (601), when the switching rod (503) is in a second working position, the first head end (101) is connected with the second tail end (202), the second head end (201) is connected with the third tail end (302), and the third head end (301) is connected with the first tail end (102).
2. The three-phase motor according to claim 1, wherein the winding switcher is split and comprises a first sub switcher (5021), a second sub switcher (5022) and a third sub switcher (5023), and the winding direction of the first winding (1) is opposite to the winding direction of the second winding (2) and the third winding (3);
the first head end (101) and the second end (202) are arranged in the first sub-switcher (5021) in a switchable manner, the second head end (201) and the third end (302) are arranged in the second sub-switcher (5022) in a switchable manner, the third head end (301) and the first end (102) are arranged in the third sub-switcher (5023) in a switchable manner, and the first head end (101), the second head end (201) and the third head end (301) can be electrically connected through a short-circuit wire (911).
3. A three-phase motor according to claim 1, characterized in that the switching mechanism (502) is provided with contacts a inside 32 (7011) Contact B 32 (7012) Contact C 32 (7013) Contact A 11 (7021) Contact B 11 (7022) Contact C 11 (7023) After the switching mechanism (502) is matched with the base (501), the contact A 32 (7011) And the contact B is connected with the first end (102) 32 (7012) Is connected with the second end (202) and the contact C 32 (7012) Is connected with the third end (302) and the contact A 11 (7021) Connected with the first head end 101 and the contact B 11 (7022) Is connected with the second head end (201), and the contact C 11 (7023) And is connected to the third head end 301.
4. A three-phase motor according to claim 3, characterized in that the base (501) is monolithic, the contacts C 11 (7023) The contact A 11 (7021) And the contact B 11 (7022) Are arranged in sequence in a first row, and the contact A 32 (7011) The contact B 32 (7012) And the contact C 32 (7013) A second row;
the contact A when the switching lever (503) is in the first working position 11 (7021) The contact B 11 (7022) And the contact C 11 (7023) Are all connected with the first short-circuit part (601); when the switching lever (503) is in the second working position, the contact A 11 (7021) With the contact B 32 (7012) Connected with the contact B 11 (7022) With the contact C 32 (7013) Connected with the contact C 11 (7023) With the contact A 32 (7011) Are connected.
5. The three-phase motor according to claim 4, wherein the switching lever (503) is movable along its length direction, wherein the switching lever (503) is moved in a first direction to place the switching lever (503) in a first operating position, and wherein the switching lever (503) is moved in a second direction to place the switching lever (503) in a second operating position, the first direction being opposite to the second direction.
6. The three-phase motor according to claim 5, wherein the switching lever (503) is provided with a first guide bar (801), a second guide bar (802) and a third guide bar (803), the first guide bar (801) comprises a first hinge end (8011) and a first touching end (8012), the second guide bar (802) comprises a second hinge end (8021) and a second touching end (8022), and the third guide bar (803) comprises a third hinge end (8031) and a third touching end (8032); the first hinge end (8011) is connected with the contact A 32 (7011) Hinged together, the second hinged end (8021) is connected with the contact B 32 (7012) Hinged together, the third hinged end (8031) is connected with the contact C 32 (7013) Hinged together;
the first short-circuit piece (601) is provided with a first contact, a second contact and a third contact; the contact A when the switching lever (503) is in the first working position 11 (7021) Is in contact with the first contact, the contact B 11 (7022) Is in contact with the second contact and the contact C 11 (7023) Is contacted with the third contact; when the switching lever (503) is in the second working position, the first guide rod (801), the second guide rod (802) and the third guide rod (803) rotate around the respective hinged ends and enable the first touching end (8012) to be in contact with the contact B 11 (7022) Is connected with the second touching end (8022) and the contact C 11 (7023) Is connected with the third touching end (8032) and the contact A 11 (7021) And (5) connection.
7. The three-phase motor according to claim 1, characterized in that the switching lever (503) is provided with a first protrusion (901), and that the switch is provided with an elastic element, which comprises a second protrusion (902) facing the first protrusion (901); the first protrusion (901) rides over and presses the second protrusion (902) along a surface of the second protrusion (902) when the switch lever (503) moves outwardly to a first operational position, and the first protrusion (901) rides over and presses the second protrusion (902) along a surface of the second protrusion (902) when the switch lever (503) moves inwardly to a second operational position.
8. The three-phase motor according to claim 7, wherein the elastic member comprises an adjustment rod (904) and a sliding head (905), a blind hole (903) is formed in the sliding head (905), the outer end of the adjustment rod (904) is arranged outside the casing of the switcher, the inner end of the adjustment rod (904) is arranged in the blind hole (903), a spring (910) is arranged between the adjustment rod (904) and the bottom wall of the blind hole (903), and the end face of the sliding head (905) facing the first protrusion (901) is the second protrusion (902).
9. A three-phase motor according to claim 3, wherein the winding switcher is monolithic, the contacts a 11 (7021) The contact B 11 (7022) The contact C 11 (7023) The contact A 32 (7011) The contact B 32 (7012) And the contact C 32 (7013) Distributed according to a row;
a second short-circuit piece (602) is also arranged in the winding switching mechanism (502), and the contact A is provided with 32 (7011) The contact B 32 (7012) And the contact C 32 (7013) As a whole, can be moved simultaneously to bring the contacts a 32 (7011) The contact B 32 (7012) And the contact C 32 (7013) Simultaneously with the second shorting member (602), or with the contact A 32 (7011) With the contact C 11 (7023) Connected to the contact B 32 (7012) With the contact A 11 (7021) Connected to the contact C 32 (7013) With the contact B 11 (7022) Are connected.
10. The three-phase motor according to any one of claims 1-9, further comprising a lead arrangement (906), the lead arrangement (906) comprising a first wire (907), a second wire (908) and a third wire (909); a first end of the first wire (907) is connected with the first head end (101), the second wire (908) is connected with the second head end (201), and the third wire (909) is connected with the third head end (301); the second end of the first wire (907), the second end of the second wire (908) and the second end of the third wire (909) are all fixed on the lead means (906).
11. A compressor comprising a three-phase motor according to any one of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311690176.XA CN117394568B (en) | 2023-12-11 | 2023-12-11 | Three-phase motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311690176.XA CN117394568B (en) | 2023-12-11 | 2023-12-11 | Three-phase motor and compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117394568A true CN117394568A (en) | 2024-01-12 |
| CN117394568B CN117394568B (en) | 2024-02-20 |
Family
ID=89470596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311690176.XA Active CN117394568B (en) | 2023-12-11 | 2023-12-11 | Three-phase motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117394568B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20104721U1 (en) * | 2001-03-19 | 2002-07-25 | Jakob Karl | Power supply device for a three-phase asynchronous motor of a drive with a square torque curve |
| JP2003111492A (en) * | 2001-10-03 | 2003-04-11 | Yaskawa Electric Corp | Coil switching device for three-phase ac motor |
| CN101320923A (en) * | 2007-06-05 | 2008-12-10 | 上海星之辰电气传动技术有限公司 | Winding of electrical machine with switch-over mechanism |
| CN106026470A (en) * | 2016-06-23 | 2016-10-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Winding structure of triple-phase asynchronous motor, motor device and control method |
| CN106130289A (en) * | 2016-08-29 | 2016-11-16 | 桂林星辰混合动力有限公司 | A kind of magneto being furnished with winding electric control switching mechanism and winding changing method |
| CN108390488A (en) * | 2018-05-14 | 2018-08-10 | 西安清泰科新能源技术有限责任公司 | A kind of three phase electric machine winding change-over switch and control method |
| CN208028683U (en) * | 2018-01-03 | 2018-10-30 | 广东美芝制冷设备有限公司 | Compressor and refrigeration equipment |
| CN112436777A (en) * | 2020-10-23 | 2021-03-02 | 北京六十六号互动科技有限公司 | Motor winding switching device and electric scooter |
-
2023
- 2023-12-11 CN CN202311690176.XA patent/CN117394568B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20104721U1 (en) * | 2001-03-19 | 2002-07-25 | Jakob Karl | Power supply device for a three-phase asynchronous motor of a drive with a square torque curve |
| JP2003111492A (en) * | 2001-10-03 | 2003-04-11 | Yaskawa Electric Corp | Coil switching device for three-phase ac motor |
| CN101320923A (en) * | 2007-06-05 | 2008-12-10 | 上海星之辰电气传动技术有限公司 | Winding of electrical machine with switch-over mechanism |
| CN106026470A (en) * | 2016-06-23 | 2016-10-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Winding structure of triple-phase asynchronous motor, motor device and control method |
| CN106130289A (en) * | 2016-08-29 | 2016-11-16 | 桂林星辰混合动力有限公司 | A kind of magneto being furnished with winding electric control switching mechanism and winding changing method |
| CN208028683U (en) * | 2018-01-03 | 2018-10-30 | 广东美芝制冷设备有限公司 | Compressor and refrigeration equipment |
| CN108390488A (en) * | 2018-05-14 | 2018-08-10 | 西安清泰科新能源技术有限责任公司 | A kind of three phase electric machine winding change-over switch and control method |
| CN112436777A (en) * | 2020-10-23 | 2021-03-02 | 北京六十六号互动科技有限公司 | Motor winding switching device and electric scooter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117394568B (en) | 2024-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108539949B (en) | Moving magnetic type transfer platform | |
| JP2009278841A (en) | Movable electrical machine | |
| CN117394568B (en) | Three-phase motor and compressor | |
| CN110707889B (en) | Permanent magnet synchronous motor and change-over switch thereof | |
| CN108880128A (en) | Slip ring unit for wound-rotor motor | |
| CN105742109A (en) | Side-mounting type high-voltage vacuum circuit breaker | |
| CN105719890A (en) | Side-mounted high-voltage vacuum circuit breaker | |
| CN111884466A (en) | Elastic voice coil motor | |
| CN2927304Y (en) | Double-gear coaxial rotary switch and its double-motor fan | |
| CN110391710A (en) | Three-phase motor | |
| CN221081019U (en) | Permanent magnet synchronous motor stator winding switching device | |
| US4577146A (en) | Variable autotransformer having an indexed stepping brush | |
| CN105762007A (en) | Side-installed high-voltage vacuum circuit breaker | |
| CN217881233U (en) | Contactor assembly | |
| RU2416864C1 (en) | Linear asynchronous motor | |
| CN205692774U (en) | A kind of contactless electromagnetic switch and electromagnetic linear motor formula sectional power supply switching device | |
| JP6965459B2 (en) | Linear motor system for sliding doors | |
| CN113530394A (en) | Linear motor, magnetic suspension door machine and magnetic suspension automatic door | |
| CN213845184U (en) | Stackable auxiliary module for universal circuit breaker | |
| CN208521870U (en) | Magnetic latching relay with vertical double structure | |
| CN215933340U (en) | Reactor for three-phase transformer and three-phase transformer | |
| CN105719896A (en) | Side-mounting type high-voltage vacuum circuit breaker | |
| CN216290418U (en) | Chassis for switch magnetic group speed regulation motor | |
| CN219058166U (en) | Enameled wire take-up mechanism | |
| CN212365783U (en) | Linkage mechanism of moving contact of combined switch, combined switch and power distribution system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |