CN210919409U - Compressor with a compressor housing having a plurality of compressor blades - Google Patents
Compressor with a compressor housing having a plurality of compressor blades Download PDFInfo
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- CN210919409U CN210919409U CN201921249509.4U CN201921249509U CN210919409U CN 210919409 U CN210919409 U CN 210919409U CN 201921249509 U CN201921249509 U CN 201921249509U CN 210919409 U CN210919409 U CN 210919409U
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Abstract
The utility model relates to a compressor. The compressor includes: a compressor body having a head; the timing unit starts timing when the compressor stops and generates a trigger signal when the timing reaches an interval time; the controller is electrically connected with the timing unit, receives the trigger signal and generates a control signal according to the trigger signal; the frequency converter is electrically connected with the controller, receives the control signal and generates a driving signal according to the control signal; and the motor is connected with the frequency converter and is connected with the compressor body through a transmission mechanism, and the motor receives the driving signal and rotates the machine head to operate for a preset operation time at a preset operation frequency. The utility model discloses can avoid the aircraft nose to block because of shutting down for a long time.
Description
Technical Field
The utility model relates to a compressor.
Background
The head of the present compressor is liable to get stuck due to the stop for too long, and therefore, a method for solving the above-mentioned drawbacks is urgently required.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect, the utility model aims to provide a compressor can effectively avoid the aircraft nose to block because of shutting down for a long time.
In order to achieve the above object, the present invention provides a compressor, which comprises: a compressor body having a head; the timing unit starts timing when the compressor stops and generates a trigger signal when the timing reaches an interval time; the controller is electrically connected with the timing unit, receives the trigger signal and generates a control signal according to the trigger signal; the frequency converter is electrically connected with the controller, receives the control signal and generates a driving signal according to the control signal; and the motor is connected with the frequency converter and is connected with the compressor body through a transmission mechanism, and the motor receives the driving signal and rotates the machine head to operate for a preset operation time at a preset operation frequency.
In an embodiment of the present invention, the compressor further includes: and the manual switch is arranged between the controller and the frequency converter and used for cutting off the control signal.
In an embodiment of the present invention, the frequency converter includes: the detecting element is used for sending a detecting signal; the processing element is electrically connected with the detecting element and used for receiving the detecting signal and judging the current state of the frequency converter according to the detecting signal, the processing element sends out an executing signal when the current state of the frequency converter is normal and sends out a warning signal when the current state of the frequency converter is abnormal, wherein the normal current state means that the current of the frequency converter is lower than the overload current, and the abnormal current state means that the current of the frequency converter is higher than or equal to the overload current; and the driving part is electrically connected with the processing part and used for receiving the execution signal and driving the frequency converter to continuously operate or receiving the warning signal and stopping the operation of the frequency converter.
In an embodiment of the present invention, the compressor further includes: and the external warning unit is electrically connected with the processing piece of the frequency converter, wherein the processing piece of the frequency converter also sends a fault signal to the external warning unit when the current state of the frequency converter is abnormal and sends an external warning signal by the external warning unit.
In an embodiment of the present invention, the predetermined operating frequency is 0.1 to 1.0 Hz; the preset running time is 5-10 seconds; the interval time is 4-8 hours.
In an embodiment of the present invention, the transmission mechanism is a coupling or a belt pulley; and/or the frequency converter is electrically connected with the controller through a first control line, and the motor is electrically connected with the frequency converter through a second control line.
In order to achieve the above object, the present invention further provides a compressor, which comprises: a compressor body having a head; the timing unit starts timing when the compressor stops and generates a control signal when the timing reaches an interval time; the frequency converter is electrically connected with the timing unit, receives the control signal and generates a driving signal according to the control signal; and the motor is connected with the frequency converter and is connected with the compressor body through a transmission mechanism, and the motor receives the driving signal and rotates the machine head to operate for a preset operation time at a preset operation frequency.
In another embodiment of the present invention, the compressor further comprises: and the manual switch is arranged between the timing unit and the frequency converter and used for cutting off the control signal.
In another embodiment of the present invention, the frequency converter includes: the detecting element is used for sending a detecting signal; the processing element is electrically connected with the detecting element and used for receiving the detecting signal and judging the current state of the frequency converter according to the detecting signal, the processing element sends out an executing signal when the current state of the frequency converter is normal and sends out a warning signal when the current state of the frequency converter is abnormal, wherein the normal current state means that the current of the frequency converter is lower than the overload current, and the abnormal current state means that the current of the frequency converter is higher than or equal to the overload current; and the driving part is electrically connected with the processing part and used for receiving the execution signal and driving the frequency converter to continuously operate or receiving the warning signal and stopping the operation of the frequency converter.
In another embodiment of the present invention, the compressor further comprises: and the external warning unit is electrically connected with the processing piece of the frequency converter, wherein the processing piece of the frequency converter also sends a fault signal to the external warning unit when the current state of the frequency converter is abnormal and sends an external warning signal by the external warning unit.
In another embodiment of the present invention, the predetermined operation frequency is 0.1 to 1.0 Hz; the preset running time is 5-10 seconds; the interval time is 4-8 hours.
In another embodiment of the present invention, the transmission mechanism is a coupling or a belt pulley; and/or the frequency converter is electrically connected with the timing unit through a first control line, and the motor is electrically connected with the frequency converter through a second control line.
Through the utility model discloses, can use the low-speed operation function of converter when the compressor is shut down, under the condition that other operation functions of compressor were not opened, only independent low-speed rotation aircraft nose blocks because of shutting down the too of a specified duration to starting torque when reducible operation starts.
Drawings
Fig. 1A is a schematic structural diagram of a compressor according to a first preferred embodiment of the present invention;
FIG. 1B is a schematic diagram of an inverter of the compressor of FIG. 1A;
FIG. 2 is a flow chart of a control method using the compressor shown in FIG. 1A;
fig. 3 is a schematic structural view of a compressor according to a second preferred embodiment of the present invention;
fig. 4 is a flowchart of a control method using the compressor shown in fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1A, a compressor 100 according to a first preferred embodiment of the present invention mainly includes a compressor body 10, a timing unit 20, a controller 30, an inverter 40, and a motor 50. Wherein the compressor body 10 has a head (not shown). The timing unit 20 starts timing when the compressor 100 is stopped and generates a trigger signal S1 when the timing reaches an interval. The controller 30 is electrically connected to the timing unit 20, and receives the trigger signal S1 and generates a control signal S2 according to the trigger signal S1. The frequency converter 40 is electrically connected to the controller 30, for example, via a first control line 70, and the frequency converter 40 receives the control signal S2 and generates a driving signal S3 according to the control signal S2. The motor 50 is connected to the frequency converter 40, for example, electrically connected through a second control line 80, the motor 50 is further connected to the compressor housing 10 through a transmission mechanism 60, the transmission mechanism 60 may be a coupling or a pulley, for example, and the motor 50 receives the driving signal S3 and rotates the head at a predetermined operating frequency for a predetermined operating time, so that the head is prevented from being stuck due to an excessive stop by rotating only the head when the compressor 100 is stopped. For convenience of description, the present invention refers to this state of the compressor 100 as the "anti-sticking mode".
Preferably, the predetermined operation frequency is, for example, 0.1 to 1.0Hz (i.e., one rotation every 1 to 10 seconds), the predetermined operation time is, for example, 5 to 10 seconds, and the time interval is, for example, 4 to 8 hours. Of course, it is understood that the preset operation frequency, the preset operation time and the interval time are not limited to the above numerical ranges, and may be changed within the range of 20%, 10% or 5% of the above numerical ranges, or may be other numerical ranges, which are not intended to limit the present invention.
In the present invention, since the inverter 40 has an alarm circuit such as overload and overcurrent inside, even if an abnormal situation such as overcurrent occurs in the "jam-proof mode", the inverter 40 can automatically trip to stop the operation. The alarm signal is also displayed on the control panel of the inverter 40 (the inverter 40 has its own control panel). Preferably, in addition to displaying the warning signal on the control panel of the transducer 40, the transducer 40 can also send a fault signal to an external warning unit (such as a warning light) to warn the user.
For example, as shown in fig. 1B, the frequency converter 40 may include a detecting element 41, a processing element 42 and a driving element 43. The detecting element 41 can be used to send out a detecting signal S41. The processing element 42 is electrically connected to the detecting element 41, and is configured to receive the detecting signal S41 and determine the current state of the frequency converter 40 according to the detecting signal S41, and the processing element 42 sends an executing signal S42 when the current state of the frequency converter 40 is normal, and sends an alarm signal S43 when the current state of the frequency converter 40 is abnormal. The driving member 43 is electrically connected to the processing member 42, and is configured to receive the execution signal S42 and drive the frequency converter 40 to operate continuously, or receive the warning signal S43 and stop the operation of the frequency converter 40. The normal current state of the frequency converter 40 means that the current thereof is lower than the overload current, and the abnormal current state of the frequency converter 40 means that the current thereof is higher than or equal to the overload current (i.e., overcurrent). The overload current of the inverter 40 can be set according to the power of the inverter compressor, the value of the overload current does not need to be reset when the anti-sticking mode is executed, and the value of the overload current is normal as long as the value of the overload current is lower than the value of the overload current, for example, the overload current of the inverter is set to be 48A under the condition that the voltage is 380V, and the current state is normal when the current of the inverter 40 is lower than 48A; when the current of the inverter 40 is higher than or equal to 48A, the current state is abnormal. Similarly, the overload current of another inverter compressor is set to 80A, and when the current of the inverter 40 is lower than 80A, the current state is normal; when the current of the inverter 40 is higher than or equal to 80A, the current state is abnormal. Here, the set value of the overcurrent is set according to the compressor and the working condition of different models. Furthermore, preferably, the processing element 42 of the frequency converter 40 can be electrically connected to an external warning unit 44, and the processing element 42 can further send a fault signal S44 to the external warning unit 44 and an external warning signal, such as a warning light, to warn a user when the current state of the frequency converter 40 is abnormal.
The utility model discloses an use converter 40's low-speed operational function when compressor 100 shuts down, under the condition that other operational functions of compressor 100 were not opened, only independent low-speed rotation aircraft nose blocks because of shutting down the too of a specified duration to starting torque when reducible operation starts.
In the present invention, when the start key is not pressed by the controller 30 of the compressor 100, the internal program does not run, and thus it can be determined that the compressor 100 is in the shutdown state. Also, since the "anti-sticking mode" is operated in a stopped state, it does not interfere with the normal operation of the compressor 100, and thus the "anti-sticking mode" can be turned on after the stop. If the anti-sticking mode is turned on in the operation state of the compressor 100, the inverter 40 can delete the increased frequency of the anti-sticking mode by itself due to the inherent adaptation characteristic of the inverter compressor, and thus the normal operation of the compressor is not disturbed. Even if this frequency is not deleted for set reasons, the compressor can still operate normally as long as it is not overloaded.
In the present invention, preferably, the compressor 100 further comprises a manual switch 90 disposed between the controller 30 and the inverter 40 for intercepting the control signal S2, so that the inverter 40 stops transmitting the driving signal S3 to the motor 50, and the motor 50 immediately stops rotating or maintains a static state, thereby stopping the "anti-jamming mode" of the compressor 100. For example, when the "anti-jamming mode" is not required to be executed for safety, maintenance, or the like, the manual switch 90 may interrupt the control signal S2 to automatically trip the inverter 40, thereby stopping the "anti-jamming mode" of the compressor 100.
Corresponding to the compressor 100 shown in fig. 1A, as shown in fig. 2, the present invention further provides a method 200 for controlling the compressor 100, which mainly includes:
step S202, starting timing by the timing unit 20 when the compressor 100 is stopped and generating a trigger signal S1 when the timing reaches an interval time;
step S204, receiving the trigger signal S1 through the controller 30 and generating a control signal S2 according to the trigger signal S1;
step S206, receiving the control signal S2 through the frequency converter 40 and generating a driving signal S3 according to the control signal S2; and
step S208, the head of the compressor 100 is rotated at a predetermined operation frequency for a predetermined operation time by receiving the driving signal S3 through the motor 50.
Preferably, the control method 200 of the compressor 100 further includes:
the control signal S2 is interrupted by the manual switch 90 disposed between the controller 30 and the inverter 40, so that the inverter 40 stops transmitting the driving signal S3 to the motor 50, and the motor 50 immediately stops rotating or maintains a stationary state.
Preferably, referring to fig. 1B in combination, the method 200 for controlling the compressor 100 further includes:
sending out a detection signal S41 through the detection element 41 of the frequency converter 40;
receiving the detection signal S41 through the processing element 42 of the frequency converter 40 and determining the current state of the frequency converter 40 according to the detection signal S41, wherein the processing element 42 sends an execution signal S42 when the current state of the frequency converter 40 is normal, and sends an alarm signal S43 when the current state of the frequency converter 40 is abnormal;
the driving member 43 of the transducer 40 receives the execution signal S42 and drives the transducer 40 to operate continuously, or receives the warning signal S43 and stops the transducer 40 from operating.
And, the control method 200 of the compressor 100 may further include:
the processing element 42 of the frequency converter 40 also sends a fault signal S44 to an external alarm unit 44 (shown in fig. 1B) and an external alarm signal therefrom when the current state of the frequency converter 40 is abnormal.
Preferably, the control method of the compressor 100 further includes, before the timing unit 20 starts timing:
step S201, setting the preset operation frequency, the preset operation time and the time interval, wherein the preset operation frequency is 0.1-1.0 Hz, the preset operation time is 5-10 seconds, and the interval time is 4-8 hours.
As shown in fig. 3, there is shown a structure of a compressor 100' according to a second preferred embodiment of the present invention. In comparison with the embodiment shown in fig. 1A, the difference is that the inverter 40 of the compressor 100 'in this embodiment is directly electrically connected to the timing unit 20' through the control line 70 ', i.e. the timing unit 20' directly generates the control signal S2 'and sends it to the inverter 40, and the inverter 40 generates the driving signal S3 according to the control signal S2' to drive the motor 50. And, accordingly, the compressor 100 ' may further include a manual switch 90 ' which may be disposed between the timing unit 20 ' and the inverter 40, respectively. In the second preferred embodiment, the structures and operation manners of the inverter 40, the motor 50, and the compressor body 10 in the compressor 100' are the same as or similar to those described in the compressor 100 of the first preferred embodiment, and are not described again.
In addition, as shown in fig. 4, the present invention further provides a method 400 for controlling the compressor 100 ', corresponding to the compressor 100' shown in fig. 3, which mainly includes:
step S402, starting timing by the timing unit 20 ' when the compressor 100 ' is stopped and generating a control signal S2 ' when the timing reaches an interval time;
step S404, receiving the control signal S2 'through the frequency converter 40 and generating a driving signal S3 according to the control signal S2'; and
step S406, the motor 50 receives the driving signal S3 and rotates the head of the compressor 100' at a predetermined operating frequency for a predetermined operating time.
Preferably, the control method 400 of the compressor 100' further includes:
the control signal S2 ' is interrupted by the manual switch 90 ' disposed between the timing unit 20 ' and the inverter 40, so that the inverter 40 stops transmitting the driving signal S3 to the motor 50, and the motor 50 immediately stops rotating or maintains a stationary state.
Preferably, referring to fig. 1B in combination, the control method 400 of the compressor 100' may further include:
sending out a detection signal S41 through the detection element 41 of the frequency converter 40;
receiving the detection signal S41 by the processing element 42 of the frequency converter 40 and determining the current state of the frequency converter 40 according to the detection signal S41, wherein the processing element 42 sends an execution signal S42 when the current state of the frequency converter 40 is normal, and sends an alarm signal S43 when the current state of the frequency converter 40 is abnormal, the normal current state of the frequency converter 40 means that the current thereof is lower than the overload current, and the abnormal current state of the frequency converter 40 means that the current thereof is higher than or equal to the overload current (i.e. the overcurrent);
the driving member 43 of the transducer 40 receives the execution signal S42 and drives the transducer 40 to operate continuously, or receives the warning signal S43 and stops the transducer 40 from operating.
The processing element 42 of the frequency converter 40 also sends out a fault signal S44 to an external alarm unit 44 and an external alarm signal therefrom when the current state of the frequency converter 40 is abnormal.
The overload current of the inverter 40 can be set according to the power of the inverter compressor, and the value of the overload current does not need to be reset when the anti-sticking mode is executed, and is normal as long as the value of the overload current is lower than the value of the overload current, for example, the overload current of the inverter compressor is set to 48A under the state that the voltage is 380V, and the current state is normal when the current of the inverter 40 is lower than 48A; when the current of the inverter 40 is higher than or equal to 48A, the current state is abnormal. Similarly, the overload current of another inverter compressor is set to 80A, and when the current of the inverter 40 is lower than 80A, the current state is normal; when the current of the inverter 40 is higher than or equal to 80A, the current state is abnormal. Here, the set value of the overcurrent is set according to the compressor and the working condition of different models.
Preferably, the method 400 for controlling the compressor 100 'further includes, before the timer unit 20' starts the timer:
step S401, setting the preset operation frequency, the preset operation time and the time interval, wherein the preset operation frequency is 0.1-1.0 Hz, the preset operation time is 5-10 seconds, and the interval time is 4-8 hours.
In the present invention, the timing mode of the compressor 100/100' in the "anti-jamming mode" may be a cycle timing, for example: after starting the anti-jamming mode, the system runs for 10 seconds at 1.0Hz and then waits for 8 hours; after 8 hours, the system runs at 1.0Hz for 10 seconds, then waits for 8 hours again, and then runs at 1.0Hz for 10 seconds again; this is repeated. In other words, the inverter 40 can drive the motor 50 to operate through the "jog operation command" (i.e., the command of the "anti-jamming mode") as described above. When the manual switch 90/90 'interrupts the control signal S2/S2' to the inverter 40, the inverter 40 stops transmitting the driving signal S3 to the motor 50, that is, the inverter 40 stops outputting three-phase current to the motor 50 because the "inching command" disappears, and the motor 50 stops operating because no power is supplied. At this time, the timing unit 20/20' does not matter even if the timing is still being performed.
The utility model discloses can be applied to water lubrication and dry-type frequency conversion screw rod machine.
Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.
Claims (12)
1. A compressor, comprising:
a compressor body having a head;
the timing unit starts timing when the compressor stops and generates a trigger signal when the timing reaches an interval time;
the controller is electrically connected with the timing unit, receives the trigger signal and generates a control signal according to the trigger signal;
the frequency converter is electrically connected with the controller, receives the control signal and generates a driving signal according to the control signal; and
the motor is connected with the frequency converter and is connected with the compressor body through a transmission mechanism, and the motor receives the driving signal and rotates the machine head to run for a preset running time at a preset running frequency.
2. The compressor of claim 1, further comprising:
and the manual switch is arranged between the controller and the frequency converter and used for cutting off the control signal.
3. The compressor of claim 1, wherein the inverter comprises:
the detecting element is used for sending a detecting signal;
the processing element is electrically connected with the detecting element and used for receiving the detecting signal and judging the current state of the frequency converter according to the detecting signal, the processing element sends out an executing signal when the current state of the frequency converter is normal and sends out a warning signal when the current state of the frequency converter is abnormal, wherein the normal current state means that the current of the frequency converter is lower than the overload current, and the abnormal current state means that the current of the frequency converter is higher than or equal to the overload current;
and the driving part is electrically connected with the processing part and used for receiving the execution signal and driving the frequency converter to continuously operate or receiving the warning signal and stopping the operation of the frequency converter.
4. The compressor of claim 3, further comprising:
and the external warning unit is electrically connected with the processing piece of the frequency converter, wherein the processing piece of the frequency converter also sends a fault signal to the external warning unit when the current state of the frequency converter is abnormal and sends an external warning signal by the external warning unit.
5. The compressor of claim 1, wherein the predetermined operating frequency is 0.1 to 1.0 Hz; the preset running time is 5-10 seconds; the interval time is 4-8 hours.
6. The compressor of claim 1, wherein the transmission mechanism is a coupling or a pulley; and/or the frequency converter is electrically connected with the controller through a first control line, and the motor is electrically connected with the frequency converter through a second control line.
7. A compressor, comprising:
a compressor body having a head;
the timing unit starts timing when the compressor stops and generates a control signal when the timing reaches an interval time;
the frequency converter is electrically connected with the timing unit, receives the control signal and generates a driving signal according to the control signal; and
the motor is connected with the frequency converter and is connected with the compressor body through a transmission mechanism, and the motor receives the driving signal and rotates the machine head to run for a preset running time at a preset running frequency.
8. The compressor of claim 7, further comprising:
and the manual switch is arranged between the timing unit and the frequency converter and used for cutting off the control signal.
9. The compressor of claim 7, wherein the inverter comprises:
the detecting element is used for sending a detecting signal;
the processing element is electrically connected with the detecting element and used for receiving the detecting signal and judging the current state of the frequency converter according to the detecting signal, the processing element sends out an executing signal when the current state of the frequency converter is normal and sends out a warning signal when the current state of the frequency converter is abnormal, wherein the normal current state means that the current of the frequency converter is lower than the overload current, and the abnormal current state means that the current of the frequency converter is higher than or equal to the overload current;
and the driving part is electrically connected with the processing part and used for receiving the execution signal and driving the frequency converter to continuously operate or receiving the warning signal and stopping the operation of the frequency converter.
10. The compressor of claim 9, further comprising:
and the external warning unit is electrically connected with the processing piece of the frequency converter, wherein the processing piece of the frequency converter also sends a fault signal to the external warning unit when the current state of the frequency converter is abnormal and sends an external warning signal by the external warning unit.
11. The compressor of claim 7, wherein the predetermined operating frequency is 0.1 to 1.0 Hz; the preset running time is 5-10 seconds; the interval time is 4-8 hours.
12. The compressor of claim 7, wherein the transmission mechanism is a coupling or a pulley; and/or the frequency converter is electrically connected with the timing unit through a first control line, and the motor is electrically connected with the frequency converter through a second control line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921249509.4U CN210919409U (en) | 2019-08-02 | 2019-08-02 | Compressor with a compressor housing having a plurality of compressor blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921249509.4U CN210919409U (en) | 2019-08-02 | 2019-08-02 | Compressor with a compressor housing having a plurality of compressor blades |
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| Publication Number | Publication Date |
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| CN210919409U true CN210919409U (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921249509.4U Active CN210919409U (en) | 2019-08-02 | 2019-08-02 | Compressor with a compressor housing having a plurality of compressor blades |
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| Country | Link |
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| CN (1) | CN210919409U (en) |
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2019
- 2019-08-02 CN CN201921249509.4U patent/CN210919409U/en active Active
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