CN116908678A - Evaluation method of motor for range hood - Google Patents
Evaluation method of motor for range hood Download PDFInfo
- Publication number
- CN116908678A CN116908678A CN202310730595.5A CN202310730595A CN116908678A CN 116908678 A CN116908678 A CN 116908678A CN 202310730595 A CN202310730595 A CN 202310730595A CN 116908678 A CN116908678 A CN 116908678A
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- Prior art keywords
- motor
- tested
- range hood
- dynamometer
- standard
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- 238000011156 evaluation Methods 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000011056 performance test Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims description 4
- 238000012797 qualification Methods 0.000 claims description 4
- 230000001932 seasonal effect Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 230000008111 motor development Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention relates to an evaluation method of a motor for a range hood, which comprises the following steps: the standard motor is arranged in the whole range hood, and the whole performance of the range hood is tested; adjusting a power supply current value, acquiring a current value, a power and a rotating speed value of a standard motor under the working condition that the whole performance of the whole range hood is controlled to be corresponding to a limit index, and transmitting and guiding the current value, the power and the rotating speed value into a dynamometer; the dynamometer locates the load point and determines the point to be tested according to the imported parameters; the dynamometer performs full performance test of the point to be tested on the standard motor under rated load and outputs a judgment standard; replacing a standard motor in the whole range hood with a tested motor, and starting a dynamometer and the tested motor; the dynamometer performs testing of each point to be tested, and test data are collected and stored after the testing process of the dynamometer is stable for time t; and sequentially judging whether the test results of all the points to be tested are within the range of the judgment standard, if so, judging that the motor is qualified. The method provides basis and direction for motor development and selection.
Description
Technical Field
The invention relates to the technical field of kitchen appliances, in particular to an evaluation method of a motor for a range hood.
Background
The range hood is a kitchen electric product for purifying kitchen environment, and works by utilizing the fluid dynamics principle, and the range hood is used for exhausting oil smoke through a centrifugal fan arranged in the range hood. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor for driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated at the center of the fan, and oil smoke below the range hood is sucked into the fan and is collected by the volute after being accelerated by the fan to be guided to be discharged out of the room. The motor is used as an important component of the core power of the range hood, and the fluctuation or qualification of the motor directly affects the performance of a fan system, thereby playing a decisive role in the core overall performance of the range hood.
The current traditional quality means cannot quickly and effectively identify the quality condition of the motor, and the motor is often required to be installed into the whole range hood for verification by depending on the whole range hood and personnel operation, so that the full performance of the motor can be judged. In order to realize quality detection of a motor, for example, a control device capable of monitoring the running state of a range hood in real time is disclosed in Chinese patent application No. CN 201310415624.5 (application publication No. CN 103644583A), and a control method thereof, wherein the control device comprises a controller, working gears in the controller are at least two gears, the controller is connected with a rotating speed sensor for detecting the rotating speed of the motor and a current sensor for detecting the current of the motor, and a data memory for storing data corresponding to the wind volume and wind pressure value data and data corresponding to the wind volume and wind pressure and efficiency value data and a display for displaying the wind volume and wind pressure and efficiency information.
The control device judges whether the range hood has faults or not by detecting the rotating speed or the current of the motor, but the control device has the following use limitations: because the control device realizes the detection of the motor after the motor is arranged in the whole range hood, errors of single parts in the whole range hood form error accumulation after the whole range hood is formed, if the whole range hood is unqualified due to structural failure, the specific parts are difficult to judge independently, the reworking cost of the whole range hood is high, the misjudgment of the motor failure is caused, meanwhile, the motor testing process has great influence on factors such as scenes, personnel, seasonal environmental differences and the like, and the full performance fluctuation and the increase judgment difficulty are caused. For this reason, further improvements to the prior art are needed.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide an evaluation method for a motor for a range hood, which can evaluate the motor independently.
The second technical problem to be solved by the invention is to provide an evaluation method of a motor for a range hood, which can reduce the influence of external factors on a judging result.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the evaluation method of the motor for the range hood is characterized by comprising the following steps of:
step 1, a standard motor is arranged in a whole range hood, the whole range hood is connected with a preset power supply voltage, and the whole performance of the whole range hood is tested;
step 2, adjusting the power supply current value of the whole range hood, obtaining the current value, the power and the rotating speed value of a standard motor under the working condition that the full performance of the whole range hood is controlled to be corresponding to the limit index, and transmitting and guiding the current value, the power and the rotating speed value of the standard motor into a dynamometer;
step 3, the dynamometer locates the load point and determines the point to be tested according to the imported parameters;
step 4, the dynamometer performs full-performance test of the point to be tested on the standard motor under rated load and outputs a judgment standard;
step 5, replacing a standard motor in the whole range hood with a tested motor, starting a dynamometer, and powering up the tested motor;
step 6, after the tested motor operates, the dynamometer tests each point to be tested, and test data are collected and stored after the testing process of the dynamometer is stable for time t;
step 7, judging whether the test result of each point to be tested is in the range of the judgment standard in the step 4 in sequence, and if the X-th point to be tested is unqualified, ending the test to obtain an unqualified evaluation result of the tested motor; if the X-th point to be tested is qualified, testing the next point to be tested until all the points to be tested are tested and all the points to be tested are qualified, and obtaining an evaluation result of the qualification of the tested motor; wherein X epsilon {1, 2, … n }, n is the total number of detection points to be detected, and the initial value of X is 1.
Preferably, the total performance of the whole range hood in the step 1 includes one or more of maximum air volume, maximum static pressure, standard air pressure, total pressure efficiency and noise.
Preferably, the voltage of the preset power supply in the step 1 is 220V.
In order to realize the application of the method, the method from the step 1 to the step 7 is used for one or more of the following scenes:
scene one: the brand new range hood is developed and needs to output sample preparation requirements;
scene II: formulating a motor full-performance library for deriving range hood type selection matching;
scene III: inspecting and evaluating and controlling the shipment or feeding of the motor;
scene four: and analyzing motor consistency or fluctuation and full-performance variation.
In order to solve the second technical problem, after all the points to be detected in the step 7 are tested and all the points to be detected are qualified, the method further comprises the following steps:
step 8, the whole range hood is connected with another power supply voltage, the tested motor is adjusted to the maximum current value, and the rated load operation time T2 is used;
step 9, collecting and storing the temperature of the motor to be tested in real time in the working process, judging whether the real-time temperature of the motor to be tested in the time T2 meets the standard requirement, if so, testing the motor to be tested to be qualified; if not, the tested motor is not qualified. In the above scheme, the power supply voltage in the step 8 is greater than the preset power supply voltage in the step 1.
Preferably, the power supply voltage in the step 8 is 233.2V.
Preferably, in the step 9, an infrared thermometer is used to measure the real-time temperature of the motor.
To avoid the influence of the following factors, the methods in step 8 and step 9 are used in one or more of the following scenarios: test scene, test mode, tester, whole structure replacement of range hood and seasonal environmental difference.
In order to avoid erroneous judgment and to improve the accuracy of the evaluation result, each of the steps 6, 7 and 9 is performed at least twice.
Compared with the prior art, the invention has the advantages that: the whole performance of the range hood and the whole performance of the motor are related and mutually converted, transmitted and imported, so that the whole performance of the motor under different points to be tested is simulated according to different requirements, and basis and direction are provided for motor development and selection; in addition, the motor full-performance fluctuation can be monitored, the motor full-performance fluctuation is not related to a whole range hood, the subjectivity to personnel operation is reduced, if the motor is mutated, the motor can be rapidly identified, whether the motor is qualified or not can be more efficiently judged according to the standard, the influence on a manufacturing end is reduced, the motor full-performance meets the whole machine index, the misjudgment and omission judgment risk is reduced, the testing stability and reliability of parts are improved, and the motor is automatically and intelligently evaluated.
Drawings
Fig. 1 is a flowchart of a method for evaluating a motor for a range hood according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1, the evaluation method of the motor for a range hood in the present embodiment includes the steps of:
step 1, a standard motor is arranged in a whole range hood, the whole range hood is connected with a preset power supply voltage, and the whole performance of the whole range hood is tested;
in the embodiment, the whole performance of the whole range hood comprises the control requirements of maximum air quantity, maximum static pressure, standard air pressure, full pressure efficiency, noise and the like; the preset power supply is 220V/50Hz;
step 2, adjusting the power supply current value of the whole range hood, obtaining the current value, the power and the rotating speed value of a standard motor under the working condition that the full performance of the whole range hood is controlled to be corresponding to the limit index, and transmitting and guiding the current value, the power and the rotating speed value of the standard motor into a dynamometer;
the dynamometer is mainly used for testing power, and the decoupling of the motor and the whole range hood is realized through the step so as to realize independent test and judgment;
step 3, simulating the actual working condition of the range hood test by the dynamometer according to the imported parameters so as to locate the load point and determine the point to be tested; the reliability and the true applicability of the motor test can be realized through the steps;
step 4, the dynamometer performs full-performance test of the point to be tested on the standard motor under rated load and outputs a judgment standard;
the step realizes that the whole performance index of the range hood is converted into the whole performance index of the motor;
step 5, replacing a standard motor in the whole range hood with a tested motor, starting a dynamometer, and powering up the tested motor; step 6 is executed after the motor to be tested is powered on and runs for T1 time, so that the motor to be tested is preheated, the motor is stable in testing in a thermal state, and motor testing fluctuation is reduced;
step 6, after the tested motor operates, the dynamometer tests each point to be tested, and test data are collected and stored after the testing process of the dynamometer is stable for time t;
in the embodiment, automatic intelligent testing is realized in an automatic acquisition mode, so that the personnel cost is saved, and meanwhile, the uncertainty and subjectivity of personnel operation are avoided;
step 7, judging whether the test result of each point to be tested is in the range of the judgment standard in the step 4 in sequence, and if the X-th point to be tested is unqualified, ending the test to obtain an unqualified evaluation result of the tested motor; if the X-th point to be tested is qualified, testing the next point to be tested until all the points to be tested are tested and all the points to be tested are qualified, obtaining an evaluation result of the qualification of the tested motor, and transferring to the step 8; wherein X epsilon {1, 2, … n }, n is the total number of detection points to be detected, and the initial value of X is 1;
step 8, the whole range hood is connected with another power supply voltage, the tested motor is adjusted to the maximum current value, and the rated load operation time T2 is used;
the power supply voltage is larger than the preset power supply voltage in the step 1, the power supply voltage in the embodiment is 233.2V, and the load running time T2 is 30 minutes;
step 9, collecting and storing the temperature of the motor to be tested in real time in the working process, judging whether the real-time temperature of the motor to be tested in the time T2 meets the standard requirement, if so, testing the motor to be tested to be qualified; if not, the tested motor is not qualified.
In the step, an infrared thermometer is adopted to measure the real-time temperature of the motor.
The steps 1 to 7 are mainly used in one or more of the following scenarios:
scene one: the brand new range hood is developed and needs to output sample preparation requirements;
scene II: formulating a motor full-performance library for deriving range hood type selection matching;
scene III: inspecting and evaluating and controlling the shipment or feeding of the motor;
scene four: and analyzing motor consistency or fluctuation and full-performance variation.
The methods in step 8 and step 9 are used in one or more of the following scenarios: test scene, test mode, tester, whole structure replacement of range hood and seasonal environmental difference.
Step 6, step 7 and step 9 are each performed at least twice. Therefore, the occurrence of misjudgment can be effectively avoided, and the accuracy of motor evaluation is improved.
In the embodiment, the whole performance of the range hood and the whole performance of the motor are related and are mutually converted, transmitted and imported, so that the whole performance of the motor under different points to be tested is simulated according to different requirements, and basis and direction are provided for motor development and selection; in addition, the motor full-performance fluctuation can be monitored, the motor full-performance fluctuation is not related to a whole range hood, the subjectivity to personnel operation is reduced, if the motor is mutated, the motor can be rapidly identified, whether the motor is qualified or not can be more efficiently judged according to the standard, the influence on a manufacturing end is reduced, the motor full-performance meets the whole machine index, the misjudgment and omission judgment risk is reduced, the testing stability and reliability of parts are improved, and the motor is automatically and intelligently evaluated.
Claims (10)
1. The evaluation method of the motor for the range hood is characterized by comprising the following steps of:
step 1, a standard motor is arranged in a whole range hood, the whole range hood is connected with a preset power supply voltage, and the whole performance of the whole range hood is tested;
step 2, adjusting the power supply current value of the whole range hood, obtaining the current value, the power and the rotating speed value of a standard motor under the working condition that the full performance of the whole range hood is controlled to be corresponding to the limit index, and transmitting and guiding the current value, the power and the rotating speed value of the standard motor into a dynamometer;
step 3, the dynamometer locates the load point and determines the point to be tested according to the imported parameters;
step 4, the dynamometer performs full-performance test of the point to be tested on the standard motor under rated load and outputs a judgment standard;
step 5, replacing a standard motor in the whole range hood with a tested motor, starting a dynamometer, and powering up the tested motor;
step 6, after the tested motor operates, the dynamometer tests each point to be tested, and test data are collected and stored after the testing process of the dynamometer is stable for time t;
step 7, judging whether the test result of each point to be tested is in the range of the judgment standard in the step 4 in sequence, and if the X-th point to be tested is unqualified, ending the test to obtain an unqualified evaluation result of the tested motor; if the X-th point to be tested is qualified, testing the next point to be tested until all the points to be tested are tested and all the points to be tested are qualified, and obtaining an evaluation result of the qualification of the tested motor; wherein X epsilon {1, 2, … n }, n is the total number of detection points to be detected, and the initial value of X is 1.
2. The evaluation method according to claim 1, wherein: the whole performance of the range hood in the step 1 comprises one or more of maximum air quantity, maximum static pressure, standard air pressure, full pressure efficiency and noise.
3. The evaluation method according to claim 1, wherein: the voltage of the preset power supply in the step 1 is 220V.
4. The evaluation method according to claim 1, wherein: the method of the step 1 to the step 7 is used for one or more of the following scenes:
scene one: the brand new range hood is developed and needs to output sample preparation requirements;
scene II: formulating a motor full-performance library for deriving range hood type selection matching;
scene III: inspecting and evaluating and controlling the shipment or feeding of the motor;
scene four: and analyzing motor consistency or fluctuation and full-performance variation.
5. The evaluation method according to any one of claims 1 to 4, wherein: and after all the points to be detected in the step 7 are detected and all the points to be detected are qualified, the method further comprises the following steps:
step 8, the whole range hood is connected with another power supply voltage, the tested motor is adjusted to the maximum current value, and the rated load operation time T2 is used;
step 9, collecting and storing the temperature of the motor to be tested in real time in the working process, judging whether the real-time temperature of the motor to be tested in the time T2 meets the standard requirement, if so, testing the motor to be tested to be qualified; if not, the tested motor is not qualified.
6. The evaluation method according to claim 5, wherein: the power supply voltage in the step 8 is larger than the preset power supply voltage in the step 1.
7. The evaluation method according to claim 6, wherein: the power supply voltage in the step 8 is 233.2V.
8. The evaluation method according to claim 5, wherein: and in the step 9, an infrared thermometer is adopted to measure the real-time temperature of the motor.
9. The evaluation method according to claim 5, wherein: the methods in steps 8 and 9 are used in one or more of the following scenarios: test scene, test mode, tester, whole structure replacement of range hood and seasonal environmental difference.
10. The evaluation method according to claim 5, wherein: the steps 6, 7 and 9 are all executed at least twice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310730595.5A CN116908678A (en) | 2023-06-19 | 2023-06-19 | Evaluation method of motor for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310730595.5A CN116908678A (en) | 2023-06-19 | 2023-06-19 | Evaluation method of motor for range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116908678A true CN116908678A (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310730595.5A Pending CN116908678A (en) | 2023-06-19 | 2023-06-19 | Evaluation method of motor for range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116908678A (en) |
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2023
- 2023-06-19 CN CN202310730595.5A patent/CN116908678A/en active Pending
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