CN205263209U - Temperature rise of household electrical appliances motor winding is at quick -witted testing arrangement - Google Patents
Temperature rise of household electrical appliances motor winding is at quick -witted testing arrangement Download PDFInfo
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- CN205263209U CN205263209U CN201520825909.0U CN201520825909U CN205263209U CN 205263209 U CN205263209 U CN 205263209U CN 201520825909 U CN201520825909 U CN 201520825909U CN 205263209 U CN205263209 U CN 205263209U
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Abstract
The utility model discloses a temperature rise of household electrical appliances motor winding is at quick -witted testing arrangement, including utensil, MCU, power strip, winding sampling unit, switch block unit, liquid crystal display unit, press unit, alarm unit, speed sensor and temperature sensor. The utility model discloses more tening to intelligent with motor winding temperature rise test method, having changed the drawback of surveying the winding temperature rise traditionally with electrified winding tester, the motor needn't take out from the utensil, and methods of measurement reliable and simple has better flexibility, and the result that records is accurate.
Description
Technical field
The present invention relates to a kind of motor winding testing arrangement, particularly a kind of household electrical appliances motor winding temperature rise is at machine test dressPut.
Background technology
Be in electro-detection, GB4706.1-2005 " the safe part 1 of the electrical equipment of family expenses and similar applications: general wantingAsk " Chapter 11 " heat run " has clear and definite explanation to the temperature rise of motor winding, and utensil is working stamndard under standard-required conditionAfter the time requiring, the setting during the interior motor winding temperature rise of utensil can not be above standard, so choose suitable, correct sideIt is very necessary that method is measured motor winding temperature rise. The utensil that motor is housed have electric device (motor is housed and withoutThe utensil of heating), combined utensil (utensil of motor and heating is housed). For electric device and combined deviceTool, the measurement of winding temperature rise generally has two kinds of forms: 1, winding is even, is measuring motor in cold conditions by winding resistance value methodUnder winding resistance value and utensil work certain hour after the winding resistance value of motor, and draw winding temperature rise through correlation computationsValue. 2, winding is inhomogeneous, can directly directly measure temperature rise by thermocouple method. In this patent method of testing corresponding aroundGroup evenly. At present the utensil of test winding resistance value is as charged winding tester: motor need to be removed from utensil, with chargedWinding tester is powered to motor, measures in real time the hot resistance of motor winding, after test finishes, also can calculate windingTemperature rise value. But this method has weak point: the motor in utensil works independently at utensil internal work and after taking out, workSame time, the resistance of winding has difference. Particularly with the combined utensil of heater element, the resistance meeting of motor windingBe subject to external temperature influence, more inadvisable for electrical measurement winding resistance value method separately after motor is taken out.
Summary of the invention
For addressing the above problem, the invention discloses a kind of household electrical appliances motor winding temperature rise at apparatus test device.
In order to achieve the above object, the invention provides following technical scheme: a kind of household electrical appliances motor winding temperature rise is tested at machineDevice, comprises utensil, MCU, power panel, winding sampling unit, switches set unit, liquid crystal display, push-button unit, warning listUnit, speed probe and temperature sensor; Described power panel is by full bridge rectifier and reduction voltage circuit and MCU device phaseConnecting, is MCU power supply; Described power panel is connected to utensil by the first switches set, and MCU is connected with the first switches set, controllerBreak-make between tool and power panel; Described utensil comprises motor and other components and parts, logical between motor and other components and partsCross second switch group and be connected, MCU is connected with second switch group, controls the break-make of motor and other components and parts; Described winding is adoptedSample unit is connected with motor by second switch group; Described speed probe is experienced motor speed, speed probe and MCU phaseConnect, signal is sent into MCU; Described liquid crystal display is connected with MCU, shows output information; Described push-button unit and MCUBe connected, for control parameter is set; Described MCU is connected with alarm unit, the information that prompting test finishes; Described temperature passesSensor is connected with MCU, and the temperature signal recording is transferred to MCU.
As a modification of the present invention, described motor was controlled with being connected by four connectivity ports of other components and partsSystem.
The invention also discloses the method for testing of above-mentioned household electrical appliances motor winding temperature rise at apparatus test device, comprise following stepRapid:
(1) connection line of each several part is connected, and the parameters such as utensil running time, sampling interval, number of samples are set;
(2) control being connected of the first switches set deenergization plate and utensil by MCU, control second switch group and disconnect motorWith being connected of other components and parts, control winding sampling unit and be connected with motor, carry out the sampling of cold conditions winding;
(3) control the first switches set by MCU power panel is powered to utensil, control second switch group and make motor and otherComponents and parts connect, and disconnection winding sampling unit is connected with motor, and under the state that motor is connected with other components and parts, utensil carries outWork, the working time reaches after time of setting power supply and the control second switch of being controlled power panel and disconnected utensil by MCUGroup disconnection motor is connected with other components and parts;
(4) rotating speed of speed probe induction machine, sensor transmits motor stalling signal to MCU, and MCU receives letterAfter number motor stalling, control second switch group motor is connected with winding sampling unit, carry out the sampling of hot winding;
(5) test finishes rear buzzer and can carry out a period of time alarm, and test finishes, and from liquid crystal display, readsThe data of wanting.
Beneficial effect:
(1) the present invention is more tending towards intelligent by motor winding method of testing, has changed and has used traditionally charged winding testerThe drawback of surveying winding, motor needn't take out from utensil. (2) motor is connected with utensil and utensil is connected with power panel, passes throughOperating in a key, and if electric device or combined utensil Measuring Time difference, can enter test process by the testing time is setRow is controlled. (3) in the present invention, institute's employing speed probe can more effectively be guaranteed the survey to hot winding after motor stallingAmount, avoids motor not stop operating and starts to measure, and makes to measure not accurate enough.
(4) the present invention is by measuring the hot winding resistance value of many groups, and is disconnected power supply according to utensil and stops operating to motorThe size of time T is chosen more effective method and is drawn and stop utensil powering that moment, the winding resistance value of motor, and pass throughCorrelation computations, the winding temperature rise of calculating motor.
Brief description of the drawings
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is method of testing flow chart of the present invention;
Fig. 3 is the shape assumption diagram of device of the present invention;
Fig. 4 is curve figure for example of the present invention.
Detailed description of the invention
Below with reference to specific embodiment, technical scheme provided by the invention is elaborated, should understands following concreteEmbodiment is only not used in and limits the scope of the invention for the present invention is described.
A kind of household electrical appliances motor winding temperature rise as described in Figure 1, at apparatus test device, comprises utensil, MCU, power panel, windingSampling unit, switches set unit, liquid crystal display, push-button unit, alarm unit, speed probe and temperature sensor.
Power panel is connected with MCU device by full bridge rectifier and reduction voltage circuit, is MCU power supply; Described power panelBe connected to utensil by the first switches set, MCU is connected with the first switches set, the break-make between controling appliance and power panel; DescribedUtensil comprise motor and other components and parts, between motor and other components and parts, be connected by second switch group, MCU and secondSwitches set is connected, and controls the break-make of motor and other components and parts; Described winding sampling unit is by second switch group and motorBe connected; Described speed probe is experienced motor speed, and speed probe is connected with MCU, and signal is sent into MCU; Described liquidBrilliant display unit is connected with MCU, shows output information; Described push-button unit is connected with MCU, for control parameter is set; InstituteThe MCU stating is connected with alarm unit, the information that prompting test finishes; Described temperature sensor is connected with MCU, by the temperature recordingDegree signal is transferred to MCU.
Further, motor was as described in Figure 3 controlled with being connected by four connectivity ports of other components and parts. Like thisDesign facilitate wiring, improved the simplicity of operation.
The invention also discloses the method for testing of above-mentioned household electrical appliances motor winding temperature rise at apparatus test device, comprise following stepRapid:
(1) connection line of each several part is connected, by the power line insertion apparatus socket of utensil, by motor in utensil twoIndividual winding wire disconnects, other element end (seeing Fig. 3) and port ones, and 2 are connected, and disconnect rear motor end (seeing Fig. 3) and port 3,4Be connected, by regulating 1 key, regulating 2 keys that the parameters such as utensil running time, number of samples, sampling interval are set, press testing buttonTest.
(2) control being connected of the first switches set deenergization plate and utensil by MCU, control second switch group and disconnect motorWith being connected of other components and parts, control winding sampling unit and be connected with motor, carry out the sampling of cold conditions winding, obtain cold conditions windingValue RL.
(3) control the first switches set by MCU power panel is powered to utensil, control second switch group and make motor and otherComponents and parts connect, and disconnection winding sampling unit is connected with motor, and motor connects utensil under other components and parts states and carries out work,Working time reached after time of setting to be controlled power panel by MCU and disconnects the power supply of utensil and control second switch group and disconnectMotor is connected with other components and parts.
(4) rotating speed of speed probe induction machine, when utensil operation, MCU can receive the square wave letter of speed probeNumber, rotating speed is faster, and the square wave number of unit interval is more, and when after motor operation setting-up time, moving component shuts down,The square-wave signal of unit interval is 0, and sensor transmits motor stalling signal to MCU, and MCU receives that signal just can control secondSwitches set makes motor be connected with winding sampling unit, carries out the sampling of hot winding, according to the interval time in sampling time, carries outMany group samplings, organize hot winding resistance value R1 more ... ..Rn.
(5) test finishes rear buzzer and can carry out a period of time alarm, and test finishes, and from liquid crystal display, readsThe data of wanting, comprise cold conditions winding resistance value RL, start environment temperature t1, finish environment temperature (while stopping utensil poweringCarve) t2, organizes hot winding resistance value R1 more ... ..Rn, utensil is disconnected power supply to the motor time T that stops operating, sampling intervalThe data such as time ts.
(6) data are processed, obtained the winding resistance value of appliance motor.
The step of data processing is:
As testing arrangement test interval can be selected 1 second, 2 seconds, 3 seconds. Number of samples is hot winding resistance valueNumber is that 5-30 is optional. As the sampling interval is chosen as 1S, number of samples can be 10. Finish to obtain T=2S as tested, start ringBorder temperature t 1, finishes environment temperature t 2, ten groups of data values of test gained be (T, R1), (T+1, R2), (T+2, R3), (T+3,R4), (T+4, R5), (T+5, R6), (T+6, R7), (T+7, R8), (T+8, R9), (T+9, R10). Temperature declines as parabola,Too, 10 groups of data obtain quadratic polynomial, x=0, i.e. corresponding 0 moment by curve in the variation of winding resistance valueStop the utensil power supply moment, obtain y value for Rr be 0 moment winding resistance value. In the following example, record fan electromotor aroundGroup class value is as follows.
Fig. 4 is the curve figure of above-mentioned data, and in figure, when X=0, y=211.71, can be used as Rr at 0 o'clockCarve, fan is disconnected power supply moment motor winding class value. Rr=211.71W is by formula △ t=(Rr-RL) * (k+t1)/RL-(t2-t1), obtain temperature rise value, k equals 234.5 for copper winding, if equal 225. t1=21.0 DEG C for aluminium winding,T2=21.5 DEG C, RL=168.8W, Rr=211.71W, copper winding. Generation as above formula obtain △ t=64.45.
When T is enough little, the hot winding value R1 of first group just more approaches Rr, now can be by R1 substitution in additionFormula is tried to achieve winding temperature rise value. Can set T < 0.5 o'clock, R1 approximates Rr.
The disclosed technological means of the present invention program is not limited only to the disclosed technological means of above-mentioned embodiment, also comprisesThe technical scheme being formed by above technical characterictic.
Claims (2)
1. household electrical appliances motor winding temperature rise, at an apparatus test device, is characterized in that: comprise that utensil, MCU, power panel, winding adoptSample unit, switches set unit, liquid crystal display, push-button unit, alarm unit, speed probe and temperature sensor; InstituteThe power panel of stating is connected with MCU device by full bridge rectifier and reduction voltage circuit, is MCU power supply; Described power panel passes throughThe first switches set is connected to utensil, and MCU is connected with the first switches set, the break-make between controling appliance and power panel; Described deviceTool comprises motor and other components and parts, between motor and other components and parts, is connected by second switch group, and MCU and second switchGroup is connected, and controls the break-make of motor and other components and parts; Described winding sampling unit is connected with motor by second switch group;Described speed probe is experienced motor speed, and speed probe is connected with MCU, and signal is sent into MCU; Described liquid crystal displayUnit is connected with MCU, shows output information; Described push-button unit is connected with MCU, for control parameter is set; Described MCUBe connected with alarm unit, the information that prompting test finishes; Described temperature sensor is connected with MCU, by the temperature signal recordingBe transferred to MCU.
2. a kind of household electrical appliances motor winding temperature rise according to claim 1, at apparatus test device, is characterized in that: described electricityMachine was controlled with being connected by four connectivity ports of other components and parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520825909.0U CN205263209U (en) | 2015-10-23 | 2015-10-23 | Temperature rise of household electrical appliances motor winding is at quick -witted testing arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520825909.0U CN205263209U (en) | 2015-10-23 | 2015-10-23 | Temperature rise of household electrical appliances motor winding is at quick -witted testing arrangement |
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| CN205263209U true CN205263209U (en) | 2016-05-25 |
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| CN201520825909.0U Expired - Fee Related CN205263209U (en) | 2015-10-23 | 2015-10-23 | Temperature rise of household electrical appliances motor winding is at quick -witted testing arrangement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105988052A (en) * | 2015-10-23 | 2016-10-05 | 安徽中认倍佳科技有限公司 | Household electric appliance motor winding temperature rise on-machine test device and method |
| CN106094705A (en) * | 2016-06-22 | 2016-11-09 | 珠海格力电器股份有限公司 | The adjusting means of a kind of motor, motor and control method thereof |
-
2015
- 2015-10-23 CN CN201520825909.0U patent/CN205263209U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105988052A (en) * | 2015-10-23 | 2016-10-05 | 安徽中认倍佳科技有限公司 | Household electric appliance motor winding temperature rise on-machine test device and method |
| CN105988052B (en) * | 2015-10-23 | 2019-02-22 | 安徽中认倍佳科技有限公司 | Household electrical appliances motor winding temperature rise is in apparatus test device and method |
| CN106094705A (en) * | 2016-06-22 | 2016-11-09 | 珠海格力电器股份有限公司 | The adjusting means of a kind of motor, motor and control method thereof |
| CN106094705B (en) * | 2016-06-22 | 2018-10-30 | 珠海格力电器股份有限公司 | A kind of regulating device of motor, motor and its adjusting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20191023 |
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| CF01 | Termination of patent right due to non-payment of annual fee |