CN204886778U - Winding auto -change over device of air conditioner, compressor system and motor - Google Patents

Abstract

The utility model discloses a winding auto -change over device of air conditioner, compressor system and motor, wherein, the motor includes stator and rotor, and the coiling has the first winding and the secondary winding of quadrature on the space on the stator, and the winding auto -change over device of motor includes: first switch, second switch, third switch, the protector, voltage testing for detect the voltage of power, control module for according to the voltage of power through the first switch of control, second switch and the third switch major -minor relation in order to switch first winding and secondary winding, wherein, compare and the 3 subharmonic winding factors of secondary winding of first winding's 3 subharmonic winding factors and fundamental wave winding factor all are less than 30% with comparing of fundamental wave winding factor. This winding auto -change over device can guarantee the reliable and stable start -up of motor, realizes that the motor is in wide voltage range operation to the winding of motor need not to set up takes a percentage, and manufacturing process is general, has improved production efficiency.

Description

The winding change-over switch of air conditioner, compressor assembly and motor

Technical field

The utility model relates to Compressor Technology field, particularly a kind of motor winding change-over switch, a kind of there is the compressor assembly of the winding change-over switch of this motor and a kind of air conditioner.

Background technology

At present, the fluctuation range of rotor compressor constant speed machine working voltage be generally rated voltage ± 15%, and the voltage protection scope of protector is: minimum voltage is-20% or-30% of rated voltage.But part electrical network unstable region because voltage is low, can cause compressor stall when peak of power consumption in summer, thus protector action, air-conditioning can not be freezed, affect the use of user.Even when peak of power consumption in summer, voltage can the low voltage protection scope to exceeding protector in some area, thus causes burn-down of electric motor.

In correlation technique, have by the design of Width funtion band namely make the fluctuation range of the working voltage of motor be rated voltage ± 30% solve the problems referred to above, but this can cause again the efficiency ratio of rated voltage; Also have adopt the mode of main winding tap to make the fluctuation range of the working voltage of motor be rated voltage ± 30%, but this can cause again winding manufacturing process difficulty to increase, and production efficiency is low, and between coil, voltage difference is large.

Utility model content

The purpose of this utility model is intended at least solve above-mentioned technological deficiency.

For this reason, an object of the present utility model is the winding change-over switch proposing a kind of motor, can ensure that motor stabilizing reliably starts, realize motor to run at wide-voltage range, and the winding of motor is without the need to arranging tap, and manufacturing process is general, improves production efficiency.

Second object of the present utility model is to propose a kind of compressor assembly.3rd object of the present utility model is to propose a kind of air conditioner.

For achieving the above object, the utility model first aspect embodiment proposes a kind of winding change-over switch of motor, wherein, described motor comprises stators and rotators, described stator is wound with the first spatially orthogonal winding and the second winding, described winding change-over switch comprises: the first switch, and the first end of described first switch is connected with the first end of described first winding, and the second end of described first switch is connected with the first end of described second winding; Second switch, the first end of described second switch is connected with the first end of described second winding, second end of described second switch is connected with the second end of described first winding, and the 3rd end of described second switch is connected with the power supply of described motor with the 3rd end of described first switch respectively by electric capacity; 3rd switch, the first end of described 3rd switch is connected with the second end of described first winding, and the second end of described 3rd switch is connected with the first end of described first winding, and the 3rd end of described 3rd switch is connected with the second end of described second winding; Protector, one end of described protector is connected with the power supply of described motor, and the other end of described protector is connected with the 3rd end of described 3rd switch with the second end of described second winding respectively; Voltage detection module, described voltage detection module is for detecting the voltage of the power supply of described motor; Control module, described control module is passed through to control described first switch, second switch and the 3rd switch to switch the major-minor relation of described first winding and described second winding according to the voltage of described power supply, wherein, 3 subharmonic winding coefficients of described first winding are all less than 30% with 3 subharmonic winding coefficients of the ratio of fundamental wave winding coefficient and described second winding with the ratio of fundamental wave winding coefficient.

According to the winding change-over switch of the motor that the utility model proposes, the voltage of the power supply of motor is detected by voltage detection module, then control module is passed through the first switch according to the voltage swing of the power supply detected, second switch and the 3rd switch control, to switch the major-minor relation of the first winding and the second winding, and be all less than 30% by the ratio of 3 subharmonic winding coefficients with fundamental wave winding coefficient that arranges the first winding and 3 subharmonic winding coefficients of the second winding with the ratio of fundamental wave winding coefficient, guarantee that motor stabilizing reliably starts, make motor also can startup optimization when the voltage compare of power supply is low like this, thus make motor operate in wide-voltage range, substantially increase the efficiency of motor, and the winding of motor is without the need to adopting the manufacturing process of tap, therefore the manufacturing process of winding can be general, improve production efficiency.In addition, this winding change-over switch structure is simple, with low cost.

Particularly, when described electric motor starting, wherein, if the first end of described first switch is communicated with the 3rd end, the first end of described second switch is communicated with the 3rd end, the first end of described 3rd switch is communicated with the 3rd end, described motor with described first winding be main winding, described second winding starts for auxiliary winding; If the second end of described first switch is communicated with the 3rd end, the second end of described second switch is communicated with the 3rd end with the second end of the 3rd switch described in the 3rd end connected sum, described motor with described first winding be auxiliary winding, described second winding starts for main winding.

Wherein, when described motor with described first winding be main winding, described second winding for auxiliary winding stable operation time, described control module is communicated with the 3rd end by the second end controlling described first switch, the second end of described second switch is communicated with the 3rd end with the second end of the 3rd switch described in the 3rd end connected sum, with make described motor with described first winding be auxiliary winding, described second winding runs for main winding.

And, when described motor with described first winding be auxiliary winding, described second winding for main winding stable operation time, described control module is communicated with the 3rd end by the first end controlling described first switch, the first end of described second switch is communicated with the 3rd end with the first end of the 3rd switch described in the 3rd end connected sum, with make described motor with described first winding be main winding, described second winding runs for auxiliary winding.

Preferably, described second winding and the effective turn of described first winding are than being 0.7-0.9.

A kind of compressor assembly that the utility model second aspect embodiment proposes, comprising: motor; With the winding change-over switch of above-mentioned motor.

According to the compressor assembly that the utility model proposes, the first winding of switch motor and the major-minor relation of the second winding is come by the winding change-over switch of motor, and be all less than 30% by the ratio of 3 subharmonic winding coefficients with fundamental wave winding coefficient that arranges the first winding and 3 subharmonic winding coefficients of the second winding with the ratio of fundamental wave winding coefficient, guarantee that motor stabilizing reliably starts, make motor also can startup optimization when the voltage compare of power supply is low like this, thus make motor operate in wide-voltage range, make compressor assembly of the present utility model can Effec-tive Function, ensure the cooling or heating effect with the air conditioner of this compressor assembly, meet the needs of user.And the winding of motor is without the need to adopting the manufacturing process of tap, therefore the manufacturing process of winding can be general, improves production efficiency.

The utility model third aspect embodiment also proposed a kind of air conditioner, and it comprises above-mentioned compressor assembly.

Air conditioner of the present utility model, the first winding of switch motor and the major-minor relation of the second winding is come by the winding change-over switch of the motor in above-mentioned compressor system, and be all less than 30% by the ratio of 3 subharmonic winding coefficients with fundamental wave winding coefficient that arranges the first winding and 3 subharmonic winding coefficients of the second winding with the ratio of fundamental wave winding coefficient, guarantee that motor stabilizing reliably starts, make motor also can startup optimization when the voltage compare of power supply is low like this, thus make air conditioner operate in wide-voltage range, not only increase efficiency, cooling or heating effect can also be ensured, meet the needs of user.Wherein, the winding of motor is without the need to adopting the manufacturing process of tap, and therefore the manufacturing process of winding can be general, improves production efficiency.

The aspect that the utility model is additional and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.

Accompanying drawing explanation

The utility model above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:

Fig. 1 is the structural representation of the winding change-over switch of motor according to the utility model embodiment;

Fig. 2 is being distributed with the schematic diagram calculating fundamental wave winding coefficient and 3 winding coefficients by each winding according to the utility model embodiment;

Fig. 3 is the annexation figure of the first winding according to the utility model embodiment and the second winding and 5 binding posts;

Fig. 4 is the schematic diagram being applied to air conditioner according to the winding change-over switch of the motor of the utility model embodiment;

Fig. 5 be according to several setting voltages of the utility model embodiment between magnitude relationship figure;

Fig. 6 is the flow chart of the control method of the winding change-over switch of motor according to the utility model embodiment;

Fig. 7 is the flow chart of the control method of the winding change-over switch of motor according to the utility model embodiment; And

Fig. 8 is the flow chart of the control method of the winding change-over switch of motor according to the utility model specific embodiment.

Embodiment

Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.

Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the utility model.In addition, the utility model can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.

In description of the present utility model, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.

The winding change-over switch of the motor proposed according to the utility model embodiment, the compressor assembly with this winding change-over switch and air conditioner are described with reference to the accompanying drawings.

Fig. 1 is the structural representation of the winding change-over switch of motor according to the utility model embodiment.Wherein, motor can be single-phase asynchronous motor, and it comprises stator and cage rotor, as shown in Figure 1, stator is wound with the first spatially orthogonal winding 10 and the second winding 20.In embodiment of the present utility model, the effective turn ratio of the first winding 10 and the second winding 20 can be 0.7-0.9.

As shown in Figure 1, the winding change-over switch of the motor of the utility model embodiment comprises: the first switch 101, second switch 102, the 3rd switch 103, protector 104, voltage detection module 105 and control module 106.Wherein, the first end A1 of the first switch 101 holds with the first end such as (+) of the first winding 10 and is connected, and the second end B1 of the first switch 101 holds with the first end such as (+) of the second winding 20 and is connected; The first end A2 of second switch 102 holds with the first end such as (+) of the second winding 20 and is connected, second end B2 of second switch 102 holds with second end such as (-) of the first winding 10 and is connected, and the 3rd end K2 of second switch 102 is connected with the positive terminal of the power supply 100 such as power supply 100 of motor with the 3rd end K1 of the first switch 101 respectively by electric capacity C1; The first end A3 of the 3rd switch 103 holds with second end such as (-) of the first winding 10 and is connected, second end B3 of the 3rd switch 103 holds with the first end such as (+) of the first winding 10 and is connected, and the 3rd end K3 of the 3rd switch 103 holds with second end such as (-) of the second winding 20 and is connected; One end of protector 104 is connected with the negative pole end of the power supply 100 of motor such as power supply 100, and the other end of protector 104 is held with second end such as (-) of the second winding 20 respectively and is connected with the 3rd end K3 of the 3rd switch 103.Voltage detection module 105 for detecting the voltage of the power supply 100 of motor, namely during electric motor starting and stable operation time input voltage; Control module 106 is connected with voltage detection module 105, control module 106 for according to the voltage of power supply 100 by control first switch 101, second switch 102 and the 3rd switch 103 to switch the major-minor relation of the first winding 10 and the second winding 20, wherein, 3 subharmonic winding coefficients of the first winding 10 are all less than 30% with 3 subharmonic winding coefficients of the ratio of fundamental wave winding coefficient and the second winding 20 with the ratio of fundamental wave winding coefficient.

Further, according to an embodiment of the present utility model, calculate fundamental wave winding coefficient and 3 subharmonic winding coefficients by each umber of turn distribution, as shown in Figure 2, each winding distribution is ω c1 circle, ω c2 circle, ω c3 circle, ω c4 circle, ω c5 circle.Fundamental wave winding coefficient calculates according to following formula (1):

$\mathrm{\ω}1=\frac{\mathrm{\ω}c1\sin \mathrm{\θ}1+\mathrm{\ω}c2\sin \mathrm{\θ}2+\mathrm{\ω}c3\sin \mathrm{\θ}3+\mathrm{\ω}c4\sin \mathrm{\θ}4+\mathrm{\ω}c5\sin \mathrm{\θ}5}{\mathrm{\ω}c1+\mathrm{\ω}c2+\mathrm{\ω}c3+\mathrm{\ω}c4+\mathrm{\ω}c5}---\left(1\right)$

Similarly, 3 subharmonic winding coefficients calculate according to following formula (2):

$\mathrm{\ω}3=\frac{\mathrm{\ω}c1sin3\mathrm{\θ}1+\mathrm{\ω}c2sin3\mathrm{\θ}2+\mathrm{\ω}c3sin3\mathrm{\θ}3+\mathrm{\ω}c4sin3\mathrm{\θ}4+\mathrm{\ω}c5sin3\mathrm{\θ}5}{\mathrm{\ω}c1+\mathrm{\ω}c2+\mathrm{\ω}c3+\mathrm{\ω}c4+\mathrm{\ω}c5}---\left(2\right)$

Because 3 subharmonic are excessive, can cause turning left at certain rotating speed such as 1000 in motor start-up procedure right stuck, far can not forward higher rotating speed such as 2900 to turn left the right side, therefore, in embodiment of the present utility model, by 3 subharmonic winding coefficients that the first winding 10 is set and the ratio of fundamental wave winding coefficient be less than 30% and 3 subharmonic winding coefficients that the second winding 20 is set be less than 30% with the ratio of fundamental wave winding coefficient, motor stabilizing reliably startup optimization can be ensured.

According to an embodiment of the present utility model, when electric motor starting, if the first end of described first switch is communicated with the 3rd end, the first end of described second switch is communicated with the 3rd end, the first end of described 3rd switch is communicated with the 3rd end, described motor with described first winding be main winding, described second winding starts for auxiliary winding; If the second end of described first switch is communicated with the 3rd end, the second end of described second switch is communicated with the 3rd end with the second end of the 3rd switch described in the 3rd end connected sum, described motor with described first winding be auxiliary winding, described second winding starts for main winding.

Specifically, if voltage detection module 105 detects that the voltage of power supply and the input voltage of motor are more than or equal to the first predeterminated voltage U1 (i.e. rated voltage-A%, wherein A% can be 10%-20%, namely the first predeterminated voltage U1 is the 80%-90% of rated voltage), the first end A1 that control module 106 controls the first switch 101 is communicated with the 3rd end K1, the first end A2 of second switch 102 is communicated with the 3rd end K3 with the first end A3 of the 3rd end K2 connected sum the 3rd switch 103, to make described motor with the first winding 10 for main winding, second winding 20 is auxiliary winding startup, if voltage detection module 105 detects that the voltage of power supply and the input voltage of motor are less than the first predeterminated voltage U1 and are more than or equal to the second predeterminated voltage U0C (such as 120V-150V), the second end B1 that control module 106 controls the first switch 101 is communicated with the 3rd end K1, the second end B2 of second switch 102 is communicated with the 3rd end K3 with the second end B3 of the 3rd end K2 connected sum the 3rd switch 103, with make described motor with the first winding 10 be auxiliary winding, the second winding 20 for main winding start, wherein, the second predeterminated voltage U0C is less than the first predeterminated voltage U1.If rated voltage is 220V, then U1 is 176V-198V.

That is, the voltage of motor is input to when detecting electric motor starting by voltage detection module 105, control module 106 judges the voltage swing being input to motor, when the voltage that the voltage being input to motor is more than or equal to the first predeterminated voltage U1 and power supply is normal, motor using the first winding 10 as main winding, the second winding 20 starts as auxiliary winding; When the voltage being input to motor is less than the first predeterminated voltage U1 and the voltage being more than or equal to the second predeterminated voltage U0C and power supply is in low supply voltage (such as rated voltage-B% ~-30%), motor is using the second winding as main winding, and the first winding starts as auxiliary winding.Wherein, for ensureing same turning to, need to switch the connection of two windings, namely the 3rd end K1 of the first switch 101 when the voltage of power supply is normal, 3rd end K2 of second switch 102, 3rd end K3 of the 3rd switch 103 is allocated to the first end A1 of the first switch 101 respectively, the first end A2 of second switch 102, the first end A3 of the 3rd switch 103, when the voltage of power supply is in low supply voltage, 3rd end K1 of the first switch 101, 3rd end K2 of second switch 102, 3rd end K3 of the 3rd switch 103 is allocated to the second end B1 of the first switch 101 respectively, second end B2 of second switch 102, second end B3 of the 3rd switch 103, thus ensure when the voltage of power supply is very low, motor can startup optimization smoothly, motor is had start and the advantage of Effec-tive Function at wide-voltage range.

According to an embodiment of the present utility model; as shown in Figure 3; motor also comprises binding post 1, binding post 2, binding post 3, binding post 4 and binding post 5; the first end of the first winding 10 is connected with binding post 1; second end of the first winding 10 is connected with binding post 2; the first end of the second winding 20 is connected with binding post 3, and the second end of the second winding 20 is connected with binding post 5, and the two ends of protector 104 connect binding post 4 and binding post 5 respectively.

And, when the winding change-over switch of the motor of the utility model embodiment is applied in air conditioner, as shown in Figure 4, air conditioner is measured in real time by voltage detection module 105 pairs of input supply voltages, voltage detection module 105 is connected with control module 106 i.e. controller, and controller is connected with 5 binding posts of compressor.5 binding posts of compressor are connected with the binding post of 5 as shown in Figure 2 in housing; binding post 1 and 2 is two ends of the first winding; binding post 3 and 5 is two ends of the second winding, and binding post 4 is one end of protector, and the other end of protector is connected with binding post 5.When air conditioner initial start according to the state energising starting compressor of K1, K2, K3 in the voltage swing determination Fig. 1 recorded.Measure input voltage size by voltage detection module 105 during operation, switch the state of K1, K2, K3, thus air conditioner has the advantages that under Width funtion, start also Effec-tive Function.

According to an embodiment of the present utility model, when described motor with described first winding be main winding, described second winding for auxiliary winding stable operation time, described control module is communicated with the 3rd end by the second end controlling described first switch, the second end of described second switch is communicated with the 3rd end with the second end of the 3rd switch described in the 3rd end connected sum, with make described motor with described first winding be auxiliary winding, described second winding runs for main winding.

Specifically, when motor with the first winding 10 be main winding, the second winding 20 be auxiliary winding stable operation time, if the voltage of power supply 100 is less than the difference of the first predeterminated voltage U1 and the first voltage threshold U11, the second end B1 that control module 106 controls the first switch 101 is communicated with the 3rd end K1, the second end B2 of second switch 102 is communicated with the 3rd end K3 with the second end B3 of the 3rd end K2 connected sum the 3rd switch 103, with make motor with the first winding 10 be auxiliary winding, the second winding 20 for main winding run.Wherein, the first voltage threshold U11 can be 0-15V.

According to another embodiment of the present utility model, when described motor with described first winding be auxiliary winding, described second winding for main winding stable operation time, described control module is communicated with the 3rd end by the first end controlling described first switch, the first end of described second switch is communicated with the 3rd end with the first end of the 3rd switch described in the 3rd end connected sum, with make described motor with described first winding be main winding, described second winding runs for auxiliary winding.

Particularly, when motor with the first winding 10 be auxiliary winding, the second winding 20 be main winding stable operation time, if the voltage of power supply 100 is more than or equal to the first predeterminated voltage U1 and the second voltage threshold U12 sum, the first end A1 that control module 106 controls the first switch 101 is communicated with the 3rd end K1, the first end A2 of second switch 102 is communicated with the 3rd end K3 with the first end A3 of the 3rd end K2 connected sum the 3rd switch 103, with make motor with the first winding 10 be main winding, the second winding 20 for auxiliary winding run.Wherein, the second voltage threshold U12 also can be 0-15V.

In embodiment of the present utility model, if the voltage of power supply 100 is less than the second predeterminated voltage U0C, control module 106 controls motor and is in stopped status, to avoid motor damage.

In addition, in embodiment of the present utility model, the magnitude relationship between the difference of the first predeterminated voltage U1, the second predeterminated voltage U0C and the first predeterminated voltage U1 and the first voltage threshold U11, several setting voltage such as the first predeterminated voltage U1 and the second voltage threshold U12 sum as shown in Figure 5.

In sum, the winding change-over switch of the motor of the utility model embodiment can switch the major-minor relation of the first winding and the second winding according to the voltage swing of power supply.Wherein, when the voltage compare height of power supply; make motor with the first winding be main winding, the second winding is for auxiliary winding start-up and operation; and when the voltage compare of power supply is low; make motor with the first winding be auxiliary winding, the second winding is for main winding start-up and operation; if the brownout of power supply, then motor is made to be in stopped status.Therefore, the winding change-over switch of the motor of the utility model embodiment can make motor start-up and operation in wider voltage range, substantially increases the efficiency of motor.

According to the winding change-over switch of the motor of the utility model embodiment, the voltage of the power supply of motor is detected by voltage detection module, then control module is passed through the first switch according to the voltage swing of the power supply detected, second switch and the 3rd switch control, to switch the major-minor relation of the first winding and the second winding, and be all less than 30% by the ratio of 3 subharmonic winding coefficients with fundamental wave winding coefficient that arranges the first winding and 3 subharmonic winding coefficients of the second winding with the ratio of fundamental wave winding coefficient, guarantee that motor stabilizing reliably starts, make motor also can startup optimization when the voltage compare of power supply is low like this, thus make motor operate in wide-voltage range, substantially increase the efficiency of motor, and the winding of motor is without the need to adopting the manufacturing process of tap, therefore the manufacturing process of winding can be general, improve production efficiency.In addition, this winding change-over switch structure is simple, with low cost.

Further, the utility model embodiment also proposed a kind of compressor assembly, and it comprises winding change-over switch and the motor of above-mentioned motor.

According to the compressor assembly of the utility model embodiment, the first winding of switch motor and the major-minor relation of the second winding is come by the winding change-over switch of motor, and be all less than 30% by the ratio of 3 subharmonic winding coefficients with fundamental wave winding coefficient that arranges the first winding and 3 subharmonic winding coefficients of the second winding with the ratio of fundamental wave winding coefficient, guarantee that motor stabilizing reliably starts, make motor also can startup optimization when the voltage compare of power supply is low like this, thus make motor operate in wide-voltage range, make compressor assembly of the present utility model can Effec-tive Function, ensure the cooling or heating effect with the air conditioner of this compressor assembly, meet the needs of user.And the winding of motor is without the need to adopting the manufacturing process of tap, therefore the manufacturing process of winding can be general, improves production efficiency.

In addition, embodiment of the present utility model also proposed a kind of air conditioner, and it comprises above-mentioned compressor assembly, such as shown in Figure 4.

The air conditioner of the utility model embodiment, the first winding of switch motor and the major-minor relation of the second winding is come by the winding change-over switch of the motor in above-mentioned compressor system, and be all less than 30% by the ratio of 3 subharmonic winding coefficients with fundamental wave winding coefficient that arranges the first winding and 3 subharmonic winding coefficients of the second winding with the ratio of fundamental wave winding coefficient, guarantee that motor stabilizing reliably starts, make motor also can startup optimization when the voltage compare of power supply is low like this, thus make air conditioner operate in wide-voltage range, not only increase efficiency, cooling or heating effect can also be ensured, meet the needs of user.Wherein, the winding of motor is without the need to adopting the manufacturing process of tap, and therefore the manufacturing process of winding can be general, improves production efficiency.

Fig. 6 is the flow chart of the control method of the winding change-over switch of motor according to the utility model embodiment.Wherein, motor comprises stators and rotators, stator is wound with the first spatially orthogonal winding and the second winding, and winding change-over switch comprises the first switch, second switch and the 3rd switch.As shown in Figure 6, the control method of the winding change-over switch of this motor comprises the following steps:

S1, detects the voltage of the power supply of motor, is namely the input voltage detecting motor.

S2, according to the voltage of power supply by control first switch, second switch and the 3rd switch to switch the major-minor relation of the first winding and the second winding.

According to an embodiment of the present utility model, as shown in Figure 7, the control method of the winding change-over switch of above-mentioned motor comprises the following steps:

S501, when electric motor starting, detects the voltage U being input to motor.

S502, judges whether voltage U is more than or equal to the first predeterminated voltage U1, and wherein, the first predeterminated voltage U1 is the 80%-90% of rated voltage, if rated voltage is 220V, then the first predeterminated voltage U1 is 176V-198V.If so, step S503 is performed; If not, step S504 is performed.

S503, connects first end A1 and the 3rd end K1, the first end A2 of second switch and the first end A3 of the 3rd end K2 and the 3rd switch and the 3rd end K3 of the first switch.Namely say, when described motor is when starting, if the voltage of described power supply is more than or equal to the first predeterminated voltage, the first end controlling described first switch is communicated with the 3rd end, the first end of described second switch is communicated with the 3rd end with the first end of the 3rd switch described in the 3rd end connected sum, with make described motor with described first winding be main winding, described second winding starts for auxiliary winding.

S504, judges whether voltage U is more than or equal to the second predeterminated voltage U0C, if wherein rated voltage is 220V, then the second predeterminated voltage U0C is 120V-150V.If so, step S505 is performed; If not, step S506 is performed.

S505, connects the second end B1 and the 3rd end K1, the second end B2 of second switch and the second end B3 of the 3rd end K2 and the 3rd switch and the 3rd end K3 of the first switch.Namely say, when described motor is when starting, if the voltage of described power supply is less than described first predeterminated voltage and is more than or equal to the second predeterminated voltage, the second end controlling described first switch is communicated with the 3rd end, the second end of described second switch is communicated with the 3rd end with the second end of the 3rd switch described in the 3rd end connected sum, with make described motor with described first winding be auxiliary winding, described second winding starts for main winding, wherein, described second predeterminated voltage is less than described first predeterminated voltage.

S506, controls motor and does not start, if namely the voltage of described power supply is less than described second predeterminated voltage, controls described motor and be in stopped status.

S507, after the first end A1 and the 3rd end K1, the first end A2 of second switch and the first end A3 of the 3rd end K2 and the 3rd switch and the 3rd end K3 of connection first switch, motor with the first winding be main winding, the second winding for auxiliary winding start and stable operation time, judge whether voltage is more than or equal to difference and the U1-U11 of the first predeterminated voltage and the first voltage threshold.If so, step S508 is performed; If not, perform step S505, namely connect the second end B1 and the 3rd end K1, the second end B2 of second switch and the second end B3 of the 3rd end K2 and the 3rd switch and the 3rd end K3 of the first switch.Therefore, when described motor with described first winding be main winding, described second winding for auxiliary winding stable operation time, if the voltage of described power supply is less than the difference of described first predeterminated voltage and the first voltage threshold, the second end controlling described first switch is communicated with the 3rd end, the second end of described second switch is communicated with the 3rd end with the second end of the 3rd switch described in the 3rd end connected sum, with make described motor with described first winding be auxiliary winding, described second winding runs for main winding.

S508, control motor with the first winding be main winding, the second winding is for auxiliary winding stable operation.

S509, after the second end B1 and the 3rd end K1, the second end B2 of second switch and the second end B3 of the 3rd end K2 and the 3rd switch and the 3rd end K3 of connection first switch, motor with the first winding be auxiliary winding, the second winding for main winding start and stable operation time, judge whether voltage U is less than the first predeterminated voltage U1 and the second voltage threshold U12 sum and U1+U12.If so, step S510 is performed; If not, perform step S503, namely connect first end A1 and the 3rd end K1, the first end A2 of second switch and the first end A3 of the 3rd end K2 and the 3rd switch and the 3rd end K3 of the first switch.Therefore, when described motor with described first winding be auxiliary winding, described second winding for main winding stable operation time, if the voltage of described power supply is more than or equal to described first predeterminated voltage and the second voltage threshold sum, the first end controlling described first switch is communicated with the 3rd end, the first end of described second switch is communicated with the 3rd end with the first end of the 3rd switch described in the 3rd end connected sum, with make described motor with described first winding be main winding, described second winding runs for auxiliary winding.

S510, control motor with the first winding be auxiliary winding, the second winding is for main winding stable operation.

Particularly, according to an embodiment of the present utility model, as shown in Figure 8, the control method of the winding change-over switch of above-mentioned motor comprises the following steps:

S601, when electric motor starting, detects the voltage U being input to motor.

S602, judges whether voltage U is more than or equal to the first predeterminated voltage U1, and wherein, the first predeterminated voltage U1 is the 80%-90% of rated voltage, if rated voltage is 220V, then the first predeterminated voltage U1 is 176V-198V.If so, step S603 is performed; If not, step S610 is performed.

S603, connect first end A1 and the 3rd end K1, the first end A2 of second switch and the first end A3 of the 3rd end K2 and the 3rd switch and the 3rd end K3 of the first switch, with make motor with the first winding be main winding, the second winding to start for auxiliary winding and to run, and enters step S604.

S604, elapsed time t1, after such as 0-15 minute, judge the size being input to the voltage U of motor.Wherein, in a time period t 1 till electric motor starting transient voltage is reduced to voltage stabilization, do not do to judge to the voltage of the motor be input to, after elapsed time t1, voltage tends towards stability, then performs step S605.

S605, judges whether voltage U is more than or equal to difference and the U1-U11 of the first predeterminated voltage and the first voltage threshold.If so, step S606 is performed; If not, step S607 is performed.

S606, control motor with the first winding be main winding, the second winding is for auxiliary winding stable operation.

S607, judges whether voltage U is more than or equal to the second predeterminated voltage U0C, if wherein rated voltage is 220V, then the second predeterminated voltage U0C is 120V-150V.If so, step S608 is performed; If not, step S609 is performed.

S608, judges whether the duration that voltage U is more than or equal to U0C is more than or equal to the first preset time T 1 such as 0-15 minute.If so, step S611 is performed; If not, step S606 is performed.

S609, controls motor stopping.

S610, judges whether voltage U is more than or equal to the second predeterminated voltage U0C.If so, step S611 is performed; If not, step S618 is performed.

S611, connects the second end B1 and the 3rd end K1, the second end B2 of second switch and the second end B3 of the 3rd end K2 and the 3rd switch and the 3rd end K3 of the first switch, with make motor with the first winding be auxiliary winding, the second winding to start for main winding and to run.

S612, elapsed time t2, after such as 0-15 minute, judge the size being input to the voltage U of motor.Wherein, in a time period t 2 till electric motor starting transient voltage is reduced to voltage stabilization, do not do to judge to the voltage of the motor be input to, after elapsed time t2, voltage tends towards stability, then performs step S613.

S613, judges whether voltage U is less than the first predeterminated voltage U1 and the second voltage threshold U12 sum and U1+U12.If so, step S614 is performed; If not, step S617 is performed.

S614, judges whether voltage U is more than or equal to the second predeterminated voltage U0C.If so, step S615 is performed; If not, step S616 is performed.

S615, control motor with the first winding be auxiliary winding, the second winding is for main winding stable operation.

S616, controls motor stopping.

S617, judges whether the duration that voltage U is more than or equal to U1+U12 is more than or equal to the second preset time T 2 such as 0-15 minute.If so, step S603 is performed; If not, step S615 is performed.

S617, controls motor and does not start.

According to the control method of the winding change-over switch of the motor of the utility model embodiment, first the voltage of the power supply of motor is detected, then pass through the first switch according to the voltage swing of the power supply detected, second switch and the 3rd switch control, to switch the major-minor relation of the first winding and the second winding, make motor also can startup optimization when the voltage compare of power supply is low like this, thus make motor operate in wide-voltage range, substantially increase the efficiency of motor, and make the winding of motor without the need to adopting the manufacturing process of tap, therefore the manufacturing process of winding can be general, improve production efficiency.In addition, this control method step is simple, is easy to realize.

In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.

Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalency thereof.

Claims (7)

1. a winding change-over switch for motor, is characterized in that, described motor comprises stators and rotators, and described stator is wound with the first spatially orthogonal winding and the second winding, described winding change-over switch comprises:

First switch, the first end of described first switch is connected with the first end of described first winding, and the second end of described first switch is connected with the first end of described second winding;

Second switch, the first end of described second switch is connected with the first end of described second winding, second end of described second switch is connected with the second end of described first winding, and the 3rd end of described second switch is connected with the power supply of described motor with the 3rd end of described first switch respectively by electric capacity;

3rd switch, the first end of described 3rd switch is connected with the second end of described first winding, and the second end of described 3rd switch is connected with the first end of described first winding, and the 3rd end of described 3rd switch is connected with the second end of described second winding;

Protector, one end of described protector is connected with the power supply of described motor, and the other end of described protector is connected with the 3rd end of described 3rd switch with the second end of described second winding respectively;

Voltage detection module, described voltage detection module is for detecting the voltage of the power supply of described motor;

Control module, described control module is connected with described voltage detection module, described control module is passed through to control described first switch, second switch and the 3rd switch to switch the major-minor relation of described first winding and described second winding according to the voltage of described power supply, wherein, 3 subharmonic winding coefficients of described first winding are all less than 30% with 3 subharmonic winding coefficients of the ratio of fundamental wave winding coefficient and described second winding with the ratio of fundamental wave winding coefficient.

2. the winding change-over switch of motor as claimed in claim 1, is characterized in that, when described electric motor starting, wherein,

If the first end of described first switch is communicated with the 3rd end, the first end of described second switch is communicated with the 3rd end, the first end of described 3rd switch is communicated with the 3rd end, described motor with described first winding be main winding, described second winding starts for auxiliary winding;

If the second end of described first switch is communicated with the 3rd end, the second end of described second switch is communicated with the 3rd end with the second end of the 3rd switch described in the 3rd end connected sum, described motor with described first winding be auxiliary winding, described second winding starts for main winding.

3. the winding change-over switch of motor as claimed in claim 2, it is characterized in that, when described motor with described first winding be main winding, described second winding for auxiliary winding stable operation time, described control module is communicated with the 3rd end by the second end controlling described first switch, the second end of described second switch is communicated with the 3rd end with the second end of the 3rd switch described in the 3rd end connected sum, with make described motor with described first winding be auxiliary winding, described second winding runs for main winding.

4. the winding change-over switch of motor as claimed in claim 2, it is characterized in that, when described motor with described first winding be auxiliary winding, described second winding for main winding stable operation time, described control module is communicated with the 3rd end by the first end controlling described first switch, the first end of described second switch is communicated with the 3rd end with the first end of the 3rd switch described in the 3rd end connected sum, with make described motor with described first winding be main winding, described second winding runs for auxiliary winding.

5. the winding change-over switch of motor as claimed in claim 1, is characterized in that, described second winding is 0.7-0.9 with the effective turn ratio of described first winding.

6. a compressor assembly, is characterized in that, comprising:

Motor; With

The winding change-over switch of the motor according to any one of claim 1-5.

7. an air conditioner, is characterized in that, comprises compressor assembly as claimed in claim 6.