CN111706960A - Fault detection circuit for air conditioner compressor - Google Patents
Fault detection circuit for air conditioner compressor Download PDFInfo
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- CN111706960A CN111706960A CN202010596663.XA CN202010596663A CN111706960A CN 111706960 A CN111706960 A CN 111706960A CN 202010596663 A CN202010596663 A CN 202010596663A CN 111706960 A CN111706960 A CN 111706960A
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- light
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- emitting circuit
- light emitting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application discloses air condition compressor fault detection circuit includes: a compressor driver, a detection circuit connected to a three-phase output terminal of the compressor driver; the detection circuit comprises a first light-emitting circuit, a second light-emitting circuit and a third light-emitting circuit, wherein first ends of the first light-emitting circuit, the second light-emitting circuit and the third light-emitting circuit are respectively connected with a corresponding one of the three-phase output terminals, and second ends of the first light-emitting circuit, the second light-emitting circuit and the third light-emitting circuit are mutually connected; this application utilizes the three-phase voltage phase sequence of compressor driver, at the external detection circuitry of three-phase output, according to the luminous condition of the three luminescent circuit of detection circuitry, make maintainer can be directly perceived quick confirm whether the compressor driver breaks down, improved air conditioning unit to the fault detection speed of compressor and driver, no longer need confirm the problem through changing the part, save the time of changing the part, improve detection efficiency.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to a fault detection circuit for an air conditioner compressor.
Background
When the air conditioner set has faults related to the compressor and the driver, whether the faults are the problems of the compressor or the driver cannot be accurately and quickly judged.
In the prior art, problems need to be confirmed by using various elimination methods, and the method needs maintenance personnel to disassemble and detect, tests a plurality of fault points one by one and can confirm the fault point only by spending a large amount of time.
When the unit has driver related abnormal alarm and can not confirm the problem of the compressor or the driver, the output terminal of the driver is connected with the detection box, and the driver can be immediately judged whether to be normal or not through the output signal of the detection box after starting. When the driver detects that the box displays normal feedback, the fault of the compressor can be judged.
For this reason, a more rapid compressor failure detection circuit is required.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a fault detection circuit for an air conditioner compressor, which shortens the detection time and improves the detection efficiency. The specific scheme is as follows:
an air conditioner compressor fault detection circuit comprising: a compressor driver, a detection circuit connected to a three-phase output terminal of the compressor driver;
the detection circuit comprises a first light-emitting circuit, a second light-emitting circuit and a third light-emitting circuit, wherein first ends of the first light-emitting circuit, the second light-emitting circuit and the third light-emitting circuit are respectively connected with one corresponding to the three-phase output terminal, and second ends of the first light-emitting circuit, the second light-emitting circuit and the third light-emitting circuit are mutually connected.
Optionally, the first light emitting circuit, the second light emitting circuit, and the third light emitting circuit respectively include a light emitting diode circuit;
the light emitting diode circuit comprises light emitting diodes with the same output direction of one-phase voltage corresponding to the three-phase output terminals.
Optionally, the first light emitting circuit, the second light emitting circuit, and the third light emitting circuit respectively include a light emitting diode circuit;
the light emitting diode circuit comprises a first light emitting diode and a second light emitting diode which are connected in parallel;
the cathode of the first light-emitting diode is connected with the anode of the second light-emitting diode, and the anode of the first light-emitting diode is connected with the cathode of the second light-emitting diode.
Optionally, the first light emitting circuit, the second light emitting circuit, and the third light emitting circuit respectively include a protection resistor;
the protection resistor is connected between the three-phase output terminal and the light emitting diode circuit.
Optionally, the protection resistor includes a first resistor and a second resistor connected in parallel to each other.
Optionally, the first light emitting circuit, the second light emitting circuit, and the third light emitting circuit respectively include a discharging capacitor;
the discharge capacitor is connected in parallel with the light emitting diode circuit.
In the present invention, the fault detection circuit of the air conditioner compressor comprises: a compressor driver, a detection circuit connected to a three-phase output terminal of the compressor driver; the detection circuit comprises a first light-emitting circuit, a second light-emitting circuit and a third light-emitting circuit, wherein first ends of the first light-emitting circuit, the second light-emitting circuit and the third light-emitting circuit are respectively connected with one corresponding to the three-phase output terminal, and second ends of the first light-emitting circuit, the second light-emitting circuit and the third light-emitting circuit are mutually connected.
The invention utilizes the three-phase voltage phase sequence of the compressor driver, is externally connected with the detection circuit at the three-phase output end, and enables maintenance personnel to intuitively and quickly confirm whether the compressor driver has faults according to the light-emitting conditions of the three light-emitting circuits of the detection circuit, thereby improving the fault detection speed of the air conditioning unit for the compressor and the driver, avoiding the problem confirmation by the removal method of replacing the compressor or replacing the driver part, saving the time for replacing the part, and further saving the time and the maintenance cost for discharging the refrigerant, evacuating again and refilling the refrigerant when replacing the compressor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a fault detection circuit of an air conditioner compressor according to an embodiment of the present invention;
fig. 2 is a schematic diagram of another fault detection circuit for an air conditioner compressor according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a fault detection circuit of an air conditioner compressor, which comprises: a compressor driver 4, as shown in fig. 1 and 2, a detection circuit connected to the three-phase output terminals of the compressor driver 4;
the detection circuit comprises a first light-emitting circuit 1, a second light-emitting circuit 2 and a third light-emitting circuit 3, wherein first ends of the first light-emitting circuit 1, the second light-emitting circuit 2 and the third light-emitting circuit 3 are respectively connected with a corresponding one of the three-phase output terminals, and second ends of the first light-emitting circuit 1, the second light-emitting circuit 2 and the third light-emitting circuit 3 are mutually connected.
Specifically, the first light-emitting circuit 1, the second light-emitting circuit 2 and the third light-emitting circuit 3 are connected with each other through respective second ends, and are respectively connected with one phase terminal of the three-phase output end to form a loop, the three-phase voltage output by the three-phase output end returns to the three-phase output end through the three light-emitting circuits, and during normal operation, the three-phase output terminal of the compressor driver 4 outputs the voltage according to a preset phase sequence, so that the three light-emitting circuits of the detection circuit emit light according to sequential flowing currents of the phase sequence, the three light-emitting circuits alternately flicker in sequence, if the compressor driver 4 fails, the light-emitting sequence of the three light-emitting circuits is different from the normal light-emitting sequence, and therefore, a maintainer can directly judge whether the compressor driver 4 fails according to the light-emitting sequence.
For example, the three-phase output terminal includes three terminals U (CH1), V (CH2) and W (CH3), when U and V are used as the output terminal and W is used as the input terminal, the phase sequence is U, V, W, then the three-phase current is firstly input from the U terminal, the first light-emitting circuit 1 firstly emits light and outputs to the third light-emitting circuit 3, the third light-emitting circuit 3 emits light, then the V terminal inputs the three-phase current, the second light-emitting circuit 2 emits light and outputs to the third light-emitting circuit 3, and the third light-emitting circuit 3 emits light to complete a cycle.
It should be noted that, the phase sequences of the compressor drivers 4 of different models are different, and the output phases of the three-phase output ends are also different, so if the three light-emitting circuits of the detection circuit use the light-emitting diodes as the light-emitting devices, the cathodes and the anodes of the light-emitting diodes need to be set according to the models of the compressor drivers 4, so as to ensure that the detection circuit can normally operate.
Referring to fig. 2, the detection circuit according to the embodiment of the present invention may be installed in a detection box 5 to be used as a portable detection tool, and only needs to be connected to the three-phase output terminals of the compressor driver 4 through wires when in use.
Therefore, the embodiment of the invention utilizes the three-phase voltage phase sequence of the compressor driver 4, the detection circuit is externally connected to the three-phase output end, and the maintenance personnel can intuitively and quickly confirm whether the compressor driver 4 is in fault or not according to the light-emitting conditions of the three light-emitting circuits of the detection circuit, so that the fault detection speed of the air conditioning unit on the compressor and the driver is improved, the problem is not required to be confirmed by the method for replacing the compressor or replacing the driver part, the time for replacing the part can be saved, and the time and the maintenance cost for discharging the refrigerant, evacuating again and refilling the refrigerant when replacing the compressor can be saved.
Compared with the prior art, for example, 1 hour is needed for judging the problem by replacing the compressor driver 4, and the problem of the air conditioning unit can be judged about 5 minutes after the detection box is used, so that 80% of time can be saved; if need change the compressor and judge about 5 hours of problem, can judge air conditioning unit problem about 5 minutes after through using this detection box, can save 98% time.
Further, the embodiment of the invention also discloses a fault detection circuit of an air conditioner compressor, and compared with the previous embodiment, the embodiment further explains and optimizes the technical scheme. Referring to fig. 1, specifically:
specifically, the first light emitting circuit 1, the second light emitting circuit 2 and the third light emitting circuit 3 may each include a light emitting diode circuit (11, 21, 31);
the light emitting diode circuit includes light emitting diodes whose output directions of the one-phase voltages corresponding to the three-phase output terminals are identical.
It should be noted that the cathode and anode of the light emitting diode need to be in the same direction as the output voltage of the compressor driver 4, so as to ensure that the detection circuit can operate normally.
Specifically, in order to improve the versatility of the detection circuit, so that one detection circuit can use various types of compressor drivers 4, the first light-emitting circuit 1, the second light-emitting circuit 2, and the third light-emitting circuit 3 may each include a light-emitting diode circuit;
the light emitting diode circuit comprises a first light emitting diode and a second light emitting diode which are connected in parallel;
the cathodes of the first light-emitting diodes (LED1, LED2, LED3) are connected to the anodes of the second light-emitting diodes (LED4, LED5, LED6), and the anodes of the first light-emitting diodes are connected to the cathodes of the second light-emitting diodes.
It will be appreciated that the first and second leds may be provided with different colors, for example, the first led is green and the second led is red, so as to better distinguish the light emitting condition of the detection circuit, and thus the light emitting states of the circuit can be better detected separately by the light emitting colors.
In particular, the light emitting diodes connected in parallel with each other can ensure that the input and output can operate regardless of the current phase, regardless of the phase sequence and input and output of the compressor driver 4.
For example, as shown in table 1 below, a display mode for detecting the drive plate model numbers of the various compressor drivers 4 shown in the description is shown.
TABLE 1
Specifically, the first light emitting circuit 1, the second light emitting circuit 2, and the third light emitting circuit 3 may each include a protection resistor (12, 22, 32);
the protection resistor is connected between the three-phase output terminal and the light emitting diode circuit.
Further, the protection resistor may include a first resistor (R1, R3, R5) and a second resistor (R2, R4, R6) connected in parallel to each other.
Specifically, in order to increase the light emitting duration of the light emitting diode and provide sufficient response time for maintenance personnel, the first light emitting circuit 1, the second light emitting circuit 2 and the third light emitting circuit 3 may each include a discharging capacitor C1;
the discharge capacitor C1 is connected in parallel with the led circuit.
Specifically, the discharge capacitor C1 can be charged when a voltage is input to the three-phase output terminal, and after the short-term charging, the discharge can be continued to prolong the light emitting time of the light emitting diode, so that the light emitting diode continuously emits light, and the continuous time can be determined according to the parameters of the discharge capacitor C1, and in addition, the discharge capacitor C1 can form a capacitive load in cooperation with the protection resistor.
It should be noted that, specific parameters of each device are provided in fig. 1, and the parameter setting is only used as a reference example, and may be adjusted according to actual application requirements, and is not limited herein.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. An air conditioner compressor fault detection circuit comprising: a compressor driver, characterized by a detection circuit connected to a three-phase output terminal of the compressor driver;
the detection circuit comprises a first light-emitting circuit, a second light-emitting circuit and a third light-emitting circuit, wherein first ends of the first light-emitting circuit, the second light-emitting circuit and the third light-emitting circuit are respectively connected with one corresponding to the three-phase output terminal, and second ends of the first light-emitting circuit, the second light-emitting circuit and the third light-emitting circuit are mutually connected.
2. The air conditioner compressor fault detection circuit of claim 1, wherein the first light emitting circuit, the second light emitting circuit and the third light emitting circuit each include a light emitting diode circuit, respectively;
the light emitting diode circuit comprises light emitting diodes with the same output direction of one-phase voltage corresponding to the three-phase output terminals.
3. The air conditioner compressor fault detection circuit of claim 1, wherein the first light emitting circuit, the second light emitting circuit and the third light emitting circuit each include a light emitting diode circuit, respectively;
the light emitting diode circuit comprises a first light emitting diode and a second light emitting diode which are connected in parallel;
the cathode of the first light-emitting diode is connected with the anode of the second light-emitting diode, and the anode of the first light-emitting diode is connected with the cathode of the second light-emitting diode.
4. The air conditioner compressor fault detection circuit of any one of claims 1 to 3, wherein the first light emitting circuit, the second light emitting circuit and the third light emitting circuit each include a protection resistor;
the protection resistor is connected between the three-phase output terminal and the light emitting diode circuit.
5. The air conditioner compressor fault detection circuit of claim 4, wherein the protection resistor comprises a first resistor and a second resistor connected in parallel with each other.
6. The air conditioner compressor fault detection circuit of claim 4, wherein the first light emitting circuit, the second light emitting circuit and the third light emitting circuit each include a discharge capacitor;
the discharge capacitor is connected in parallel with the light emitting diode circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010596663.XA CN111706960A (en) | 2020-06-28 | 2020-06-28 | Fault detection circuit for air conditioner compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010596663.XA CN111706960A (en) | 2020-06-28 | 2020-06-28 | Fault detection circuit for air conditioner compressor |
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| CN111706960A true CN111706960A (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010596663.XA Pending CN111706960A (en) | 2020-06-28 | 2020-06-28 | Fault detection circuit for air conditioner compressor |
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Citations (6)
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| CN201845062U (en) * | 2010-11-16 | 2011-05-25 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Grounding fault monitoring device of power supply circuit for well drilling electromagnetic brake |
| CN203037751U (en) * | 2012-12-29 | 2013-07-03 | 重庆广达仪表有限公司 | Three-phase alternating current phase sequence detection circuit |
| KR20140096627A (en) * | 2013-01-28 | 2014-08-06 | 엘지전자 주식회사 | Power converting apparatus and air conditioner having the same |
| CN204858517U (en) * | 2015-06-29 | 2015-12-09 | 乐清夏兴电子科技有限公司 | Undervoltage protection ware is crossed from double entry to three -phase |
| CN206948013U (en) * | 2017-07-19 | 2018-01-30 | 江苏吉泰科电气股份有限公司 | A kind of automobile mounted air-conditioning driver |
| US20180301972A1 (en) * | 2017-04-17 | 2018-10-18 | Toshiba Carrier Corporation | Power supply apparatus |
-
2020
- 2020-06-28 CN CN202010596663.XA patent/CN111706960A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201845062U (en) * | 2010-11-16 | 2011-05-25 | 中国石油集团川庆钻探工程有限公司川东钻探公司 | Grounding fault monitoring device of power supply circuit for well drilling electromagnetic brake |
| CN203037751U (en) * | 2012-12-29 | 2013-07-03 | 重庆广达仪表有限公司 | Three-phase alternating current phase sequence detection circuit |
| KR20140096627A (en) * | 2013-01-28 | 2014-08-06 | 엘지전자 주식회사 | Power converting apparatus and air conditioner having the same |
| CN204858517U (en) * | 2015-06-29 | 2015-12-09 | 乐清夏兴电子科技有限公司 | Undervoltage protection ware is crossed from double entry to three -phase |
| US20180301972A1 (en) * | 2017-04-17 | 2018-10-18 | Toshiba Carrier Corporation | Power supply apparatus |
| CN206948013U (en) * | 2017-07-19 | 2018-01-30 | 江苏吉泰科电气股份有限公司 | A kind of automobile mounted air-conditioning driver |
Non-Patent Citations (1)
| Title |
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| 姚道如等: "《电工电子技术》", 31 January 2008, 安徽科学技术出版社 * |
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Application publication date: 20200925 |