CN104682631A - Variable frequency integrated motor and washing machine - Google Patents
Variable frequency integrated motor and washing machine Download PDFInfo
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- CN104682631A CN104682631A CN201510119680.3A CN201510119680A CN104682631A CN 104682631 A CN104682631 A CN 104682631A CN 201510119680 A CN201510119680 A CN 201510119680A CN 104682631 A CN104682631 A CN 104682631A
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- temperature
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- frequency conversion
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Abstract
The invention belongs to the technical field of motors, and provides a variable frequency integrated motor and a washing machine. A thermal protector is arranged on a stator winding in the variable frequency integrated motor, and is connected in series between a main power circuit of the variable frequency integrated motor and a power supply end of a controller; when the temperature of the stator winding is not less than an over-temperature protection temperature, the thermal protector disconnects a power path between the main power circuit of the variable frequency integrated motor and the power supply end of the controller, and then the controller can power off a motor body because the power supply cannot be obtained from the main power circuit, so that the high reliable over-temperature protection can be implemented through simultaneous power-off of the controller and the motor body when the temperature of the stator winding is too high; the cost is low; the problems of high cost and low reliability of the over-temperature protection implemented by the variable frequency integrated motor in the prior art are solved.
Description
Technical field
The invention belongs to technical field of motors, particularly relate to a kind of frequency conversion integrated motor and washing machine.
Background technology
At present; frequency conversion integrated motor is a kind of integrated motor integrating three-phase variable frequency motor body and controller; when frequency conversion integrated motor is used for washing machine; overheat protector function need be possessed; so that guarantee under damage can deenergization, thus motor body and controller are protected.
In the prior art, the mode making frequency conversion integrated motor possess overheat protector function has following two kinds:
(1) each series connection protector in any two phase windings of motor body; when causing motor winding temperature to raise because there is damage; the protector of only connecting at two phase windings disconnects simultaneously; motor body ability power-off also quits work; but the cost of this overheat protector mode is high; and when only disconnecting the protector that a wherein phase winding is connected; motor body will be in open-phase running status; there is serious electromagnetic noise and vibration by causing in this, therefore this overheat protector mode also exists the problem of poor reliability.
(2) frequency conversion integrated motor coordinates peripheral protective circuit and software protection thereof jointly to realize overheat protector function by the temperature sensor that the Intelligent Power Module in its controller carries.But this software and hardware combines, the mode of carrying out overheat protector cannot realize directly protection when motor winding is overheated; easily there is the problem protected not in time; and be subject in the situation such as external interference and component failure, also there is the defect that software and hardware misses protection; in addition; if controller adopts discrete power device, then the reliability of software and hardware to the overheat protector of controller and motor body will reduce greatly.
In sum, there is the high and problem that reliability is low of cost for the overheat protector that frequency conversion integrated motor realizes in prior art.
Summary of the invention
The object of the present invention is to provide a kind of frequency conversion integrated motor, be intended to solve the high and problem that reliability is low of the cost existing for overheat protector that prior art realizes for frequency conversion integrated motor.
The present invention realizes like this, a kind of frequency conversion integrated motor, it comprises motor body and controller, described motor body comprises rotor assembly, stator module and for the upper end cover of fixing described rotor assembly and described stator module and bottom end cover, described stator module comprises stator core and stator winding, described stator core is overrided to form by stator punching, and described stator winding is embedded in the stator slot on described stator punching; Described controller is arranged at the top of described upper end cover, and for driving described motor body work;
Described stator winding is provided with temperature protector, the input line of described temperature protector and the general supply connection of described frequency conversion integrated motor, the lead-out wire of described temperature protector is connected with the power end of described controller; Drive in the process of described motor body work at described controller, when the temperature of described stator winding is less than overheat protector temperature, the general supply circuit of described frequency conversion integrated motor is communicated with the power end of described controller by described temperature protector; When the temperature of described stator winding is not less than described overheat protector temperature, described temperature protector disconnects the power path between the general supply circuit of described frequency conversion integrated motor and the power end of described controller.
Another object of the present invention is also to provide a kind of washing machine with above-mentioned frequency conversion integrated motor.
The present invention is by set temperature protector on the stator winding in frequency conversion integrated motor, be series between the general supply circuit of frequency conversion integrated motor and the power end of controller by this temperature protector, when the temperature of stator winding is not less than overheat protector temperature, temperature protector disconnects the power path between the general supply circuit of frequency conversion integrated motor and the power end of controller, then controller can make motor body power-off shut down because obtaining power supply from general supply circuit, thus when the temperature of stator winding is too high by making controller and motor body power-off simultaneously to realize the overheat protector of high reliability, and cost is low, solve the high and problem that reliability is low of the cost existing for overheat protector that prior art realizes for frequency conversion integrated motor.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the frequency conversion integrated motor that the embodiment of the present invention provides;
Fig. 2 is the decomposition texture schematic diagram of the frequency conversion integrated motor shown in Fig. 1;
Fig. 3 is the schematic diagram of the rotor core shown in Fig. 2;
Fig. 4 is the schematic diagram of rotor punching;
Fig. 5 is the schematic diagram of stator punching;
Fig. 6 is that temperature protector arranges schematic diagram in frequency conversion integrated motor;
Fig. 7 is the modularization operating diagram of temperature protector in frequency conversion integrated motor.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, it comprises motor body 1 and controller 2 to the frequency conversion integrated motor that the embodiment of the present invention provides.As shown in Figure 2, motor body 1 comprises rotor assembly 10, stator module 11 and for the upper end cover 12 of fixed rotor assembly 10 and stator module 11 and bottom end cover 13; Rotor assembly 10 comprises rotor core 101, rotor windings 102 and rotating shaft 103, rotor core 101 as shown in Figure 3, its rotor punching 1011 is as shown in Figure 4 overrided to form, and rotor windings 102 is embedded in the rotor 1012 (as shown in Figure 4) on rotor punching 1011; Stator module 11 comprises stator core 110 and stator winding 111, and stator core 110 stator punching 1101 is as shown in Figure 5 overrided to form, and stator winding 111 is embedded in the stator slot 1102 (as shown in Figure 5) on stator punching 1101.Controller 2 is arranged at the top of the upper end cover 12 of motor body 1, and works for drive motors body 1, and as shown in Figure 2, the controller PCB plate circuit 21 forming controller 2 is placed in the top of upper end cover 12.
As shown in Figure 6, stator winding 111 is provided with temperature protector 20, the input line of temperature protector 20 is connected with the general supply circuit 22 of frequency conversion integrated motor, and the lead-out wire of temperature protector 20 is connected with the power end of controller 2; In the process of controller 2 drive motors body 1 work, when the temperature of stator winding 111 is less than overheat protector temperature, the general supply circuit 22 of frequency conversion integrated motor is communicated with the power end of controller 2 by temperature protector 20; When the temperature of stator winding 111 is not less than overheat protector temperature; temperature protector 20 disconnects the power path between the general supply circuit 22 of frequency conversion integrated motor and the power end of controller 2; and when the temperature drops back of stator winding 111 is to overheat protector temperature; temperature protector 20 resets and is again communicated with the power end of controller 2 by the general supply circuit 22 of frequency conversion integrated motor, then controller 2 and motor body 1 Power resumption also normal work thereupon.
Wherein, the quantity of temperature protector 20 is at least one, and the temperature-sensitive face of temperature protector 20 is close to stator winding 111, and the lead-out wire of temperature protector 20 is connected with the power end of controller 2 with the power line 23 of terminal connector with terminal by one.In addition, temperature protector 20 can be specifically that bimetal leaf can protector of cut-off-reset temperature, bimetal plate heat protector is the thermostat of a kind of bimetal leaf as the temperature module, it is that the different alloy of employing two kinds of thermal coefficient of expansions combines as two sheet metals, variations in temperature is converted to mechanical motion, wherein, the large sheet metal of thermal coefficient of expansion is as active layers, and the little sheet metal of thermal coefficient of expansion is as passive layer, when normal temperature, the length of two sheet metals is equal, inner unstressed, when the temperature increases, because the hot expansion property of two sheet metals is different, even if raise same temperature, the sheet metal elongate amplitude that thermal coefficient of expansion is large is larger, and be fixed together due to two sheet metals, so two sheet metal inside can be caused to produce temperature, pressure, active layers occurs bending and deformation to passive layer one side, therefore, based on such thermal expansion character, temperature protector 20 just can at motor body 1 because of short circuit, phase shortage is powered, stall, the software and hardware of overload operation or controller 2 disconnected the power path between general supply circuit 22 and controller 2 when losing efficacy and made the temperature of stator winding 111 meet or exceed overheat protector temperature, to realize power-off protection to controller 2 and motor body 1, thus frequency conversion integrated motor is realized to the overheat protector of low cost and high reliability, and then improve security performance and the market competitiveness of frequency conversion integrated motor.
The scheme realizing overheat protector due to above-mentioned employing temperature protector 20 pairs of frequency conversion integrated motors is easy to implement; do not need to be equipped with any peripheral auxiliary circuits, be equally applicable to the frequency conversion integrated motor of the polyphase induction of more than the frequency conversion integrated motor (as BLDC, DDM, PDM etc.) of direct current supply, two-phase or three-phase in the above described manner.
In summary, the embodiment of the present invention is by set temperature protector 20 on the stator winding 111 in frequency conversion integrated motor, (as shown in Figure 7) between the general supply circuit 22 of frequency conversion integrated motor and the power end of controller 2 is series at by this temperature protector 20, when the temperature of stator winding 111 is not less than overheat protector temperature, temperature protector 20 disconnects the power path between the general supply circuit 22 of frequency conversion integrated motor and the power end of controller 2, then controller 2 can cannot export heterogeneous electricity (three-phase electricity U as shown in Figure 7 because obtaining power supply from general supply circuit 22, V, W) to motor body 1, and then motor body 1 power-off is shut down, thus can when temperature is too high by making controller 2 and motor body 1 power-off simultaneously to realize the overheat protector of high reliability, and cost is low.
Because above-mentioned frequency conversion integrated motor possesses the overheat protector function of low cost and high reliability because adopting temperature protector 20; can by this frequency conversion integrated motor application in washing machine, so the embodiment of the present invention additionally provides a kind of washing machine with above-mentioned frequency conversion integrated motor.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a frequency conversion integrated motor, it comprises motor body and controller, described motor body comprises rotor assembly, stator module and for the upper end cover of fixing described rotor assembly and described stator module and bottom end cover, described stator module comprises stator core and stator winding, described stator core is overrided to form by stator punching, and described stator winding is embedded in the stator slot on described stator punching; Described controller is arranged at the top of described upper end cover, and for driving described motor body work; It is characterized in that:
Described stator winding is provided with temperature protector, the input line of described temperature protector and the general supply connection of described frequency conversion integrated motor, the lead-out wire of described temperature protector is connected with the power end of described controller; Drive in the process of described motor body work at described controller, when the temperature of described stator winding is less than overheat protector temperature, the general supply circuit of described frequency conversion integrated motor is communicated with the power end of described controller by described temperature protector; When the temperature of described stator winding is not less than described overheat protector temperature, described temperature protector disconnects the power path between the general supply circuit of described frequency conversion integrated motor and the power end of described controller.
2. frequency conversion integrated motor as claimed in claim 1, it is characterized in that, the quantity of described temperature protector is at least one.
3. frequency conversion integrated motor as claimed in claim 1; it is characterized in that; the temperature-sensitive face of described temperature protector is close to described stator winding, and the lead-out wire of described temperature protector is connected with the power end of described controller with the power line of terminal connector with terminal by one.
4. frequency conversion integrated motor as claimed in claim 1, it is characterized in that, described temperature protector is that bimetal leaf can protector of cut-off-reset temperature.
5. a washing machine, is characterized in that, described washing machine has the frequency conversion integrated motor as described in any one of Claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119680.3A CN104682631A (en) | 2015-03-18 | 2015-03-18 | Variable frequency integrated motor and washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119680.3A CN104682631A (en) | 2015-03-18 | 2015-03-18 | Variable frequency integrated motor and washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104682631A true CN104682631A (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510119680.3A Pending CN104682631A (en) | 2015-03-18 | 2015-03-18 | Variable frequency integrated motor and washing machine |
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| CN (1) | CN104682631A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786389A (en) * | 2017-01-03 | 2017-05-31 | 安徽美芝制冷设备有限公司 | Overcurrent protective device, frequency-changeable compressor system and refrigerator for frequency-changeable compressor |
| CN108777533A (en) * | 2018-06-29 | 2018-11-09 | 宁波江北思洞工业设计有限公司 | A kind of high density winding punching |
| CN108880015A (en) * | 2018-06-29 | 2018-11-23 | 宁波江北思洞工业设计有限公司 | High density winding punching |
| WO2020014914A1 (en) * | 2018-07-19 | 2020-01-23 | 罗伯特·博世有限公司 | Motor and control method therefor |
| CN110838812A (en) * | 2018-08-17 | 2020-02-25 | 无锡飞翎电子有限公司 | Washing machine and temperature detection method and device of variable frequency motor of washing machine |
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| CN2206514Y (en) * | 1994-08-20 | 1995-08-30 | 李学贤 | Electric motor with superheat automatic protector |
| WO2008063420A2 (en) * | 2006-11-17 | 2008-05-29 | Emerson Electric Co. | Integrated motor and controller assemblies for horizontal axis washing machines |
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| CN102611264A (en) * | 2011-12-21 | 2012-07-25 | 合肥同智机电控制技术股份有限公司 | Electronic type alternating-current asynchronous motor |
| CN202868836U (en) * | 2012-10-11 | 2013-04-10 | 金云峰 | Novel energy-saving heating system |
| CN203708003U (en) * | 2013-12-18 | 2014-07-09 | 佛山市威灵洗涤电机制造有限公司 | Electric connector for motor temperature protector, stator and motor |
| CN203827125U (en) * | 2014-03-31 | 2014-09-10 | 广东威灵电机制造有限公司 | Integrated motor and washing machine |
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2015
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| CN2206514Y (en) * | 1994-08-20 | 1995-08-30 | 李学贤 | Electric motor with superheat automatic protector |
| WO2008063420A2 (en) * | 2006-11-17 | 2008-05-29 | Emerson Electric Co. | Integrated motor and controller assemblies for horizontal axis washing machines |
| CN201478802U (en) * | 2009-07-16 | 2010-05-19 | 常州市裕成富通电机有限公司 | Overheating protection device of permanent-magnetic brushless three-phase DC motor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786389A (en) * | 2017-01-03 | 2017-05-31 | 安徽美芝制冷设备有限公司 | Overcurrent protective device, frequency-changeable compressor system and refrigerator for frequency-changeable compressor |
| CN108777533A (en) * | 2018-06-29 | 2018-11-09 | 宁波江北思洞工业设计有限公司 | A kind of high density winding punching |
| CN108880015A (en) * | 2018-06-29 | 2018-11-23 | 宁波江北思洞工业设计有限公司 | High density winding punching |
| CN108880015B (en) * | 2018-06-29 | 2019-12-24 | 东莞市开关厂有限公司 | High-density winding punching sheet |
| WO2020014914A1 (en) * | 2018-07-19 | 2020-01-23 | 罗伯特·博世有限公司 | Motor and control method therefor |
| US11837985B2 (en) | 2018-07-19 | 2023-12-05 | Robert Bosch Gmbh | Motor and control method therefore |
| CN110838812A (en) * | 2018-08-17 | 2020-02-25 | 无锡飞翎电子有限公司 | Washing machine and temperature detection method and device of variable frequency motor of washing machine |
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Application publication date: 20150603 |
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