CN210423124U - Efficient oxygenerator radiator fan alarm device - Google Patents
Efficient oxygenerator radiator fan alarm device Download PDFInfo
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- CN210423124U CN210423124U CN201921043997.3U CN201921043997U CN210423124U CN 210423124 U CN210423124 U CN 210423124U CN 201921043997 U CN201921043997 U CN 201921043997U CN 210423124 U CN210423124 U CN 210423124U
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- circuit
- alarm
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- speed detection
- power supply
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Abstract
The utility model relates to an efficient oxygenerator radiator fan alarm device, including supply circuit, rotational speed detection circuitry, sampling circuit and warning circuit. The power supply circuit provides working power supplies for the cooling fan, the current converter, the sampling circuit and the alarm circuit; the rotating speed detection circuit is connected with the radiating fan and used for detecting the rotating state of the radiating fan; the current converter is used for converting alternating current of the execution part into direct current of the control part; the rotating speed detection circuit is connected with the alarm circuit; the sampling circuit is connected with the alarm circuit, so that the on-off of the alarm circuit is controlled according to signals detected by the rotating speed detection circuit and the sampling circuit.
Description
Technical Field
The utility model relates to an oxygenerator technical field specifically is an efficient oxygenerator radiator fan alarm device.
Background
As is known, the compressor of an oxygen generator is usually installed in a closed compressor compartment for noise reduction, so that the simplest measure to reduce the temperature rise of the compressor and protect and prolong the life of the compressor is to install a cooling fan. Whether a cooling fan works normally or not relates to whether the performance of continuous working equipment can be stable, if the cooling fan breaks down and is damaged, no good means is generally used for fault prompting and alarming, the temperature rise of a compressor is often caused to reach the overtemperature protection shutdown of the compressor, the required time is about 30 minutes, the temperature rise is too high during the time, peculiar smell and oxygen concentration are reduced, and the like, and the cooling is carried out for a period of time after the shutdown, so that the phenomena of misjudgment and misjudgment are easily caused. At the present stage, no special tool is available for detecting the working state of the cooling fan, manual timing inspection is needed, inspection efficiency is low, effect is poor, and monitoring and fault alarm of the working state of the cooling fan cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model provides an efficient oxygenerator radiator fan alarm device to the shortcoming and not enough that exist among the prior art.
In order to achieve the above object, the present invention uses the following technical solutions:
a high-efficiency alarm device for a cooling fan of an oxygen generator comprises a power supply circuit, the cooling fan, a rotating speed detection circuit, a current converter, a sampling circuit and an alarm circuit, wherein the power supply circuit provides working power supplies for the cooling fan, the rotating speed detection circuit, the sampling circuit and the alarm circuit; the rotating speed detection circuit is connected with the radiating fan and used for detecting the rotating state of the radiating fan; the current converter is used for converting alternating current of the execution part into direct current of the control part; the rotating speed detection circuit is connected with the alarm circuit; the sampling circuit is connected with the alarm circuit, so that the on-off of the alarm circuit is controlled according to signals detected by the rotating speed detection circuit and the sampling circuit.
The current converter is provided with mutual inductance L1, wherein one end of the mutual inductance L1 is connected with a +5V direct current power supply, and the other end of the mutual inductance L1 is connected with one end of a capacitor C1 and one end of a capacitor C2 which are connected in parallel.
The working principle is as follows: when the power supply is switched on, primary heavy current is connected in a current loop of the cooling fan in series, the characteristics of the alternating current heavy current loop are coupled to the low-voltage control end through the current converter, and the sampling circuit controls the alarm loop after being processed by the single chip microcomputer.
The alarm circuit is provided with a resistor R1, a resistor R2, a diode D1, a triode Q1, a capacitor C1, a capacitor C2 and a mutual inductance L1, wherein one end of the resistor R1 is connected with a +5V direct-current power supply, the other end of the resistor R1 is connected with the anode of the diode D1, and the cathode of the diode D1 is grounded; one end of the mutual inductance L1 is connected with a +5V direct current power supply, the other end of the mutual inductance L1 is connected with one end of a capacitor C1 and a capacitor C2 which are connected in parallel and is connected with a power supply VCC, and the other end of the capacitor C1 and the capacitor C2 which are connected in parallel is grounded; one end of the resistor R2 is connected with a power supply VCC, the other end of the resistor R2 is connected with the collector of the triode Q1, wherein the collector of the triode Q1 is connected with the sampling circuit, and the emitter of the triode Q1 is grounded.
The working principle is as follows: when the cooling fan operates normally, the rotating speed detection circuit can detect a rotating speed signal and output a normal signal; when the cooling fan operates abnormally, the rotating speed detection circuit cannot detect a rotating speed signal or the signal is abnormal, an abnormal signal is output, and the alarm circuit gives an alarm.
Compared with the prior art, the utility model, there is following advantage:
(1) when the cooling fan works normally, the alarm circuit does not alarm; when the cooling fan is damaged due to failure, the alarm circuit is started to give an alarm to remind workers of timely handling the failure of the cooling system, and the effect of protecting the service life of the oxygen generator is achieved.
(2) In the alarm circuit, a 1500ml/10ml small-sized current converter is built by utilizing the characteristics of a current transformer, a primary large current is connected in a current loop of a cooling fan in series, and an MCU (microprogrammed control Unit) is used for processing the secondary small current and then controlling the alarm loop. Meanwhile, the problem of conversion of the execution part being high voltage (alternating current) and the control part being low voltage (direct current) is solved. The defect that devices such as an optical coupler and the like cannot be directly connected into a large-current loop in series is overcome, and the characteristics of the alternating-current large-current loop can be directly coupled to a low-voltage control end.
Drawings
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
In this embodiment, as shown in fig. 1, a high-efficiency alarm device for a cooling fan of an oxygen generator includes a power supply circuit, a cooling fan, a current converter, a sampling circuit, and an alarm circuit. The power supply circuit provides working power supplies for the cooling fan, the current converter, the sampling circuit and the alarm circuit; the rotating speed detection circuit is connected with the radiating fan and used for detecting the rotating state of the radiating fan; the current converter is used for converting alternating current of the execution part into direct current of the control part; the rotating speed detection circuit is connected with the alarm circuit; the sampling circuit is connected with the alarm circuit, so that the on-off of the alarm circuit is controlled according to signals detected by the rotating speed detection circuit and the sampling circuit.
As shown in fig. 2, the current converter is provided with mutual inductance L1, wherein one end of the mutual inductance L1 is connected to +5V dc power, and the other end is connected to one end of the capacitor C1 and the capacitor C2 in parallel.
The working principle is as follows: when the power supply is switched on, primary heavy current is connected in a current loop of the cooling fan in series, the characteristics of the alternating current heavy current loop are coupled to the low-voltage control end through the current converter, and the sampling circuit controls the alarm loop after being processed by the single chip microcomputer.
The alarm circuit is provided with a resistor R1, a resistor R2, a diode D1, a triode Q1, a capacitor C1, a capacitor C2 and a mutual inductance L1, wherein one end of the resistor R1 is connected with a +5V direct-current power supply, the other end of the resistor R1 is connected with the anode of the diode D1, and the cathode of the diode D1 is grounded; one end of the mutual inductance L1 is connected with a +5V direct current power supply, the other end of the mutual inductance L1 is connected with one end of a capacitor C1 and a capacitor C2 which are connected in parallel and is connected with a power supply VCC, and the other end of the capacitor C1 and the capacitor C2 which are connected in parallel is grounded; one end of the resistor R2 is connected with a power supply VCC, the other end of the resistor R2 is connected with the collector of the triode Q1, wherein the collector of the triode Q1 is connected with the sampling circuit, and the emitter of the triode Q1 is grounded.
The working principle is as follows: when the cooling fan operates normally, the rotating speed detection circuit can detect a rotating speed signal and output a normal signal; when the cooling fan operates abnormally, the rotating speed detection circuit cannot detect a rotating speed signal or the signal is abnormal, an abnormal signal is output, and the alarm circuit gives an alarm.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. The utility model provides an efficient oxygenerator radiator fan alarm device which characterized in that: the device is provided with a power supply circuit, a rotating speed detection circuit, a cooling fan, a current converter, a sampling circuit and an alarm circuit; the power supply circuit provides working power supplies for the cooling fan, the current converter, the sampling circuit and the alarm circuit; the rotating speed detection circuit is connected with the radiating fan and used for detecting the rotating state of the radiating fan; the current converter is used for converting alternating current of the execution part into direct current of the control part; the rotating speed detection circuit is connected with the alarm circuit; the sampling circuit is connected with the alarm circuit, so that the on-off of the alarm circuit is controlled according to signals detected by the rotating speed detection circuit and the sampling circuit;
the current converter is provided with mutual inductance L1;
the sampling circuit is used for sampling the current and controlling the alarm circuit after the current is processed by the MCU;
the alarm circuit is provided with a resistor R1, a resistor R2, a diode D1, a triode Q1, a capacitor C1, a capacitor C2 and a mutual inductance L1, wherein one end of the resistor R1 is connected with a +5V direct-current power supply, the other end of the resistor R1 is connected with the anode of the diode D1, and the cathode of the diode D1 is grounded; one end of the mutual inductance L1 is connected with a +5V direct current power supply, the other end of the mutual inductance L1 is connected with one end of a capacitor C1 and a capacitor C2 which are connected in parallel and is connected with a power supply VCC, and the other end of the capacitor C1 and the capacitor C2 which are connected in parallel is grounded; one end of the resistor R2 is connected with a power supply VCC, the other end of the resistor R2 is connected with the collector of the triode Q1, wherein the collector of the triode Q1 is connected with the sampling circuit, and the emitter of the triode Q1 is grounded.
2. The efficient oxygenerator cooling fan alarm device of claim 1, wherein: the diode D1 is an infrared emitting diode.
3. The efficient oxygenerator cooling fan alarm device of claim 1, wherein: the triode Q1 is an NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921043997.3U CN210423124U (en) | 2019-07-05 | 2019-07-05 | Efficient oxygenerator radiator fan alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921043997.3U CN210423124U (en) | 2019-07-05 | 2019-07-05 | Efficient oxygenerator radiator fan alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423124U true CN210423124U (en) | 2020-04-28 |
Family
ID=70379414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921043997.3U Expired - Fee Related CN210423124U (en) | 2019-07-05 | 2019-07-05 | Efficient oxygenerator radiator fan alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210423124U (en) |
-
2019
- 2019-07-05 CN CN201921043997.3U patent/CN210423124U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200428 Termination date: 20210705 |