CN109026810B - Fan test fixture - Google Patents
Fan test fixture Download PDFInfo
- Publication number
- CN109026810B CN109026810B CN201811113727.5A CN201811113727A CN109026810B CN 109026810 B CN109026810 B CN 109026810B CN 201811113727 A CN201811113727 A CN 201811113727A CN 109026810 B CN109026810 B CN 109026810B
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- Prior art keywords
- electrically connected
- main board
- velocimeter
- power supply
- fan
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a fan testing tool, and relates to the technical field of fan testing. The invention comprises a control panel, a main board, a power supply, a velocimeter and a decibel meter, wherein one surface of the control panel is connected with the main board, the control panel is provided with a display and a plurality of switches and knobs, the main board comprises a PWM generating chip, the main board is respectively and electrically connected with the velocimeter and the decibel meter, the plurality of switches and knobs are respectively and electrically connected with the power supply, the main board, the velocimeter and the decibel meter, and the display, the main board, the velocimeter and the decibel meter are electrically connected with the power supply. The invention can rapidly check whether the fan is in fault or not through the mutual matching of the PWM generating device, the decibel meter and the velocimeter, and can test the change of the rotating speed and the noise of the fan under different duty ratios, thereby facilitating the verification of the refrigeration performance and improving the detection efficiency of the fan.
Description
Technical Field
The invention belongs to the technical field of fan testing, and particularly relates to a fan testing tool.
Background
When the noise and the air quantity of the refrigerator set are tested in a laboratory and the fan is in fault detection (the fan is not rotated, the noise is too large, the air quantity cannot meet the refrigeration requirement), the whole refrigerator set is always electrified, and the on-off condition of each circuit and the quality of a control board driving circuit are tested by utilizing a universal meter; or the fan is taken down, a testing circuit under 220v voltage is built in a laboratory, and the special setting of a control program is matched; the test engineer has large workload and lower test efficiency.
Disclosure of Invention
The invention aims to provide a fan testing tool, which can be used for rapidly checking whether a fan is in fault or not through the mutual matching of a PWM generating device, a decibel meter and a velocimeter, and can be used for testing the change of the rotating speed and the noise of the fan under different duty ratios, so that the verification of the refrigeration performance is facilitated, and the detection efficiency of the fan is improved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a fan test tool which comprises a shell, a control panel, a cover plate, a power supply, a velocimeter, a decibel meter and a main board, wherein one surface of the shell is connected with the control panel, one surface of the control panel is connected with the main board, the main board comprises a PWM generating chip, the cover plate is a Z-shaped plate, the shell and the cover plate are mutually matched to form a box body and a storage cabin, a baffle is arranged in the shell, the baffle and the shell are mutually matched to form a power supply groove, the power supply is arranged in the power supply groove, one surface of the baffle is connected with the shell through a limiting rod group, the limiting rod group comprises a first limiting rod and a second limiting rod, the velocimeter is arranged on the first limiting rod, the velocimeter and the decibel meter are both fixed in the box body, and a partition board is arranged in the storage cabin and divides the storage cabin into a power supply output cabin and a monitoring cabin.
Preferably, the control panel comprises a display, a power switch, a tachometer switch, a decibel meter switch, a PWM frequency adjusting knob and a PWM duty ratio adjusting knob, wherein the power is electrically connected with the power switch, the power is electrically connected with a main board, the main board is respectively electrically connected with the tachometer and the decibel meter, the tachometer switch is electrically connected with the tachometer, the decibel meter switch is electrically connected with the decibel meter, and the PWM frequency adjusting knob and the PWM duty ratio adjusting knob are both electrically connected with the main board;
the display is a liquid crystal display screen, and the model of the liquid crystal display screen comprises TN or HTN or STN or FSTN.
Preferably, the PWM generating chip is of the type SG3525.
Preferably, the model of the velocimeter is a SZS-1 type flash velocimeter.
Preferably, the decibel meter is model TES1350A.
Preferably, the test fixture further comprises a test frame, the test frame comprises a base, a universal bracket and a positioning frame, the base is connected with the positioning frame through the universal bracket, the positioning frame is respectively connected with a speed measuring probe and a decibel probe, the speed measuring probe is electrically connected with a velometer, and the decibel probe is electrically connected with the decibel meter.
Preferably, the power source is a polymer lithium battery, including a 5V port and a 12V port.
The invention has the following beneficial effects:
1. the invention can rapidly check whether the fan is in fault or not through the mutual matching of the PWM generating device, the decibel meter and the velocimeter, and can test the change of the rotating speed and the noise of the fan under different duty ratios, thereby facilitating the verification of the refrigeration performance and improving the detection efficiency of the fan.
2. The invention has small volume, light weight and convenient carrying.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a fan test fixture;
FIG. 2 is a front view of a fan test fixture;
FIG. 3 is a rear view of a fan test fixture;
FIG. 4 is a schematic view of a back structure of a fan test fixture without a cover plate;
FIG. 5 is a rear view of a fan test fixture without a cover plate;
FIG. 6 is a schematic view of a back structure of a fan test fixture without a fixed plate;
FIG. 7 is a rear view of a fan test fixture without a fixed plate;
FIG. 8 is a schematic view of the cross-sectional structure A-A of FIG. 7;
FIG. 9 is a schematic diagram of a test rack;
fig. 10 is a diagram of electrical component connection relationships of a fan test fixture.
In the drawings, the list of components represented by the various numbers is as follows:
the device comprises a 1-shell, a 2-control panel, a 3-cover plate, a 4-power supply, a 5-baffle, a 6-baffle, a 7-velocimeter, an 8-decibel meter, a 9-fixed plate, a 10-limit rod group, an 11-main plate, a 12-test rack, a 201-display, a 202-power switch, a 203-velocimeter switch, a 204-decibel meter switch, a 205-PWM frequency adjusting knob, a 206-PWM duty cycle adjusting knob, a 1001-first limit rod, a 1002-second limit rod, a 1201-base, a 1202-universal bracket and a 1203-fixed bracket.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "outer," "middle," "inner," "peripheral," and the like indicate an orientation or positional relationship, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Embodiment one:
referring to fig. 1-8, the invention relates to a fan testing tool, which comprises a casing 1, a control panel 2, a cover plate 3, a power supply 4, a velocimeter 7, a decibel meter 8 and a main board 11, wherein one surface of the casing 1 is connected with the control panel 2, one surface of the control panel 2 is connected with the main board 11, the main board 11 comprises a PWM generating chip, the cover plate 3 is a Z-shaped plate, the casing 1 and the cover plate 3 are mutually matched to form a box body and a storage cabin, a baffle plate 5 is arranged in the casing 1, the baffle plate 5 and the casing 1 are mutually matched to form a power supply groove, a power supply 4 is arranged in the power supply groove, one surface of the baffle plate 5 is connected with the casing 1 through a limiting rod group 10, the limiting rod group 10 comprises a first limiting rod 1001 and a second limiting rod 1002, the velocimeter 7 is arranged on the first limiting rod 1001, the decibel meter 8 is arranged on the second limiting rod 1002, the velocimeter 7 and the decibel meter 8 are both fixed in the box body, a baffle plate 6 is arranged in the storage cabin, and the baffle plate 6 divides the storage cabin into a power supply output cabin and a monitoring cabin.
As shown in fig. 1-2, the control panel 2 includes a display 201, a power switch 202, a tachometer switch 203, a decibel switch 204, a PWM frequency adjustment knob 205, and a PWM duty cycle adjustment knob 206.
As shown in fig. 9, the test fixture further includes a test stand 12, the test stand includes a base 1201, a gimbal 1202 and a positioning stand 1203, the base 1201 is connected with the positioning stand 1203 through the gimbal 1202, and the positioning stand 1023 is connected with the speed measuring probe and the decibel probe respectively.
As shown in fig. 10, the power supply 4 is electrically connected to the power switch 202, the power supply 4 is electrically connected to the main board 11, the main board 11 is electrically connected to the speedometer 7 and the decibel meter 8, the speedometer switch 203 is electrically connected to the speedometer 7, the decibel meter switch 204 is electrically connected to the decibel meter 8, the PWM frequency adjusting knob 205 and the PWM duty ratio adjusting knob 206 are electrically connected to the main board 11, the speedometer probe is electrically connected to the speedometer 7, and the decibel probe is electrically connected to the decibel meter 8.
Further, the display 201 is a liquid crystal display, and the type of the liquid crystal display includes TN or HTN or STN or FSTN.
Further, the model of the PWM generation chip is SG3525.
Further, the model of the velocimeter 7 is a SZS-1 type flash velocimeter.
Further, decibel meter 8 is model TES1350A.
Further, the power supply 4 is a polymer lithium battery, including a 5V port and a 12V port.
Embodiment two:
the invention relates to a fan test tool, which comprises the following working principle and using method: when the fan needs to be tested, the fan is electrically connected with the power output end of the test tool, then the test frame 12 is fixed in front of the fan, then the power is supplied, the rated frequency of the fan output by the PWM generating chip is adjusted through the PWM frequency adjusting knob 205 and is fixed, the duty ratio of PWM waveforms is adjusted through the PWM duty ratio adjusting knob 206, when the rated power of the fan is met, the fan blade rotating speed and the fan noise size of the fan are measured through the velocimeter 7 and the decibel meter 8 under different duty ratios, the numerical value is displayed through the display 201, and whether the fan works normally or not is judged by comparing the actual data of the fan blade rotating speed and the fan noise size with theoretical data, so that the purpose of testing the fan is achieved.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (5)
1. The utility model provides a fan test fixture, includes casing (1), control panel (2), apron (3), power (4), tachometer (7), decibel meter (8) and mainboard (11), its characterized in that: the intelligent speed meter comprises a shell (1), a control panel (2), a main board (11) and a speed meter (7), wherein the surface of the control panel (2) is connected with the main board (11), the main board (11) comprises a PWM generation chip, a cover plate (3) is a Z-shaped plate, the shell (1) and the cover plate (3) are mutually matched to form a box body and a storage cabin, a baffle (5) is arranged in the shell (1), the baffle (5) and the shell (1) are mutually matched to form a power supply groove, a power supply (4) is arranged in the power supply groove, a surface of the baffle (5) is connected with the shell (1) through a limiting rod group (10), the limiting rod group (10) comprises a first limiting rod (1001) and a second limiting rod (1002), the first limiting rod (1001) is provided with the speed meter (7), the second limiting rod (1002) is provided with a decibel meter (8), the speed meter (7) and the decibel meter (8) are both fixed in the box body, and the storage cabin (6) is stored in the power supply cabin and is monitored and output by the power supply cabin;
the control panel (2) comprises a display (201), a power switch (202), a velocimeter switch (203), a decibel meter switch (204), a PWM frequency adjusting knob (205) and a PWM duty ratio adjusting knob (206), wherein the power supply (4) is electrically connected with the power switch (202), the power supply (4) is electrically connected with a main board (11), the main board (11) is electrically connected with the velocimeter (7) and the decibel meter (8) respectively, the velocimeter switch (203) is electrically connected with the velocimeter (7), the decibel meter switch (204) is electrically connected with the decibel meter (8), and the PWM frequency adjusting knob (205) and the PWM duty ratio adjusting knob (206) are electrically connected with the main board (11);
the display (201) is a liquid crystal display screen, and the model of the liquid crystal display screen comprises TN or HTN or STN or FSTN;
the test tool further comprises a test frame (12), wherein the test frame comprises a base (1201), a universal bracket (1202) and a positioning frame (1203), the base (1201) is connected with the positioning frame (1203) through the universal bracket (1202), the positioning frame (1203) is respectively connected with a speed measuring probe and a decibel probe, the speed measuring probe is electrically connected with a velometer (7), and the decibel probe is electrically connected with a decibel meter (8);
the intelligent control device is characterized in that an MCU control chip is arranged on the main board (11), the MCU control chip is electrically connected with the PWM control chip, the MCU control chip is electrically connected with the decibel meter (8), the MCU control chip is electrically connected with the velocimeter (7), and the MCU control chip is electrically connected with the display (201).
2. The fan testing tool of claim 1, wherein the PWM generating chip is of a model SG3525.
3. Fan testing fixture according to claim 1, characterized in that the velocimeter (7) is of the SZS-1 type.
4. The fan testing tool according to claim 1, wherein the model number of the decibel meter (8) is TES1350A.
5. The fan testing tool according to claim 1, wherein the power supply (4) is a polymer lithium battery, comprising a 5V port and a 12V port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113727.5A CN109026810B (en) | 2018-09-25 | 2018-09-25 | Fan test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113727.5A CN109026810B (en) | 2018-09-25 | 2018-09-25 | Fan test fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026810A CN109026810A (en) | 2018-12-18 |
| CN109026810B true CN109026810B (en) | 2024-04-16 |
Family
ID=64617751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811113727.5A Active CN109026810B (en) | 2018-09-25 | 2018-09-25 | Fan test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026810B (en) |
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| DE102008017555A1 (en) * | 2008-04-07 | 2009-10-08 | Winbond Electronics Corp. | Device for detecting fan type and controlling fan e.g. 4-wire pulse width modulation fan, in computer, has tachometer connected with direct current generator and receiving tachometer signal to detect change in speed of fan |
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| CN103899558A (en) * | 2012-12-27 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Fan testing fixture |
| CN104373337A (en) * | 2014-11-14 | 2015-02-25 | 苏州迈创信息技术有限公司 | Roots blower testing system |
| CN206292368U (en) * | 2016-12-16 | 2017-06-30 | 昆山欧标仪器有限公司 | A kind of new fan motor tester |
| CN206609455U (en) * | 2017-01-24 | 2017-11-03 | 杭州威衡科技有限公司 | A kind of motor working condition measurement system |
| CN206626007U (en) * | 2017-02-17 | 2017-11-10 | 株洲联诚集团控股股份有限公司 | A kind of real-time measurement apparatus of blower fan torque |
| CN209012106U (en) * | 2018-09-25 | 2019-06-21 | 长虹美菱股份有限公司 | A kind of fan test tooling |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937006A (en) * | 2009-07-01 | 2011-01-05 | 鸿富锦精密工业（深圳）有限公司 | Fan Speed Measuring Device |
| TWI586895B (en) * | 2015-12-23 | 2017-06-11 | 新唐科技股份有限公司 | Fan driver system and fan driver analog chip |
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- 2018-09-25 CN CN201811113727.5A patent/CN109026810B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008017555A1 (en) * | 2008-04-07 | 2009-10-08 | Winbond Electronics Corp. | Device for detecting fan type and controlling fan e.g. 4-wire pulse width modulation fan, in computer, has tachometer connected with direct current generator and receiving tachometer signal to detect change in speed of fan |
| JP2010110185A (en) * | 2008-10-31 | 2010-05-13 | Toshiba Corp | Electronic apparatus and method of controlling fan |
| CN103899558A (en) * | 2012-12-27 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Fan testing fixture |
| CN104373337A (en) * | 2014-11-14 | 2015-02-25 | 苏州迈创信息技术有限公司 | Roots blower testing system |
| CN206292368U (en) * | 2016-12-16 | 2017-06-30 | 昆山欧标仪器有限公司 | A kind of new fan motor tester |
| CN206609455U (en) * | 2017-01-24 | 2017-11-03 | 杭州威衡科技有限公司 | A kind of motor working condition measurement system |
| CN206626007U (en) * | 2017-02-17 | 2017-11-10 | 株洲联诚集团控股股份有限公司 | A kind of real-time measurement apparatus of blower fan torque |
| CN209012106U (en) * | 2018-09-25 | 2019-06-21 | 长虹美菱股份有限公司 | A kind of fan test tooling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109026810A (en) | 2018-12-18 |
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