CN202971135U - Control loop of air compressor starting under no-load - Google Patents
Control loop of air compressor starting under no-load Download PDFInfo
- Publication number
- CN202971135U CN202971135U CN 201320049759 CN201320049759U CN202971135U CN 202971135 U CN202971135 U CN 202971135U CN 201320049759 CN201320049759 CN 201320049759 CN 201320049759 U CN201320049759 U CN 201320049759U CN 202971135 U CN202971135 U CN 202971135U
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- Prior art keywords
- time relay
- control loop
- air compressor
- electromagnetic valve
- starting under
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Abstract
The utility model relates to a control loop of air compressor starting under no-load. The control loop of the air compressor starting under no-load comprises a time relay KT, an electromagnetic valve coil Y and an alternating current (AC) contactor K. Two ends of an original control loop time relay KT are provided with a time relay KT1 in a side-by-side mode. A normally-open contact which is delayed to break off of the time relay KT1 is arranged in a control loop of an electromagnetic valve. The normally-open contact which is delayed to break off of the time relay KT1 is enabled to be in series connection with a contact of the time relay KT and the electromagnetic valve Y. The control loop of the air compressor starting under no-load can achieve the fact that the electromagnetic valve can be only in electrical actuation within delayed time of the time relay KT and the time relay KT1 when the air compressor is started and stopped. Due to the fact that the action time of the electromagnetic valve is shortened, the service life of the electromagnetic valve coil is greatly prolonged.
Description
One, technical field:
The utility model relates to the air compressor start control circuit, what be specifically related to is air compressor starting under no load control loop.
Two, background technique:
In order to alleviate the starting load of air compressor, general way is that the starting under no load solenoid valve is set at present.Existing air compressor starting under no load control loop as shown in Figure 1, its control loop is by pressure gauge upper limit contact 1,2, pressure gauge lower limit contact 1,3, auxiliary reclay KM, time relay KT, A.C. contactor K forms.Wherein, the electromagnetic valve loop is by time relay KT contact, and electromagnetic valve coil Y forms.This loop exists electromagnetic valve coil charged for a long time, makes its coil Y very easily burn out.Starting when compressor electric motor moves automatically and stop being controlled by the pressure gauge contact.During to setting valve, pressure gauge lower limit contact 1,3 is connected when the low pressure gasholder pressure drop that is connected with air compressor, auxiliary reclay KM action, and air compressor A.C. contactor K gets electric, the air compressor motor starting.Due to the K action, it often opens the auxiliary contact closure simultaneously, time relay KT coil magnetization, and at this moment, electromagnetic valve coil Y circuit keeps connecting, and makes the air compressor motor open outside drain tap at the starting rear electromagnetic valve, realizes starting under no load.After this, time relay KT break contact time-delay disconnects, and closed electromagnetic valve, air compressor begin to inflate to low pressure gasholder, and when pressure reached upper limit set value, pressure gauge upper limit contact 1,2 was connected, the disconnection that resets of KM coil losing electricity, its normally open contact.The K coil losing electricity, air compressor quits work, and K often opens the auxiliary contact disconnection that resets, the KT break contact closure that resets, the Y adhesive, drain tap is opened, and compressor to the gas of gas tank check valve part is discharged, and completes a starting cycle.After this, electromagnetic valve coil is in "on" position always, because solenoid valve is charged for a long time, makes its coil Y very easily burn out.
Three, summary of the invention:
The purpose of this utility model is to provide air compressor starting under no load control loop, this air compressor starting under no load control loop is used for solving existing air compressor starting under no load control loop electromagnetic valve coil and is in "on" position always, because solenoid valve is charged for a long time, the problem that makes its coil Y very easily burn out.
The technological scheme that its technical problem that solves the utility model adopts is: this air compressor starting under no load control loop comprises time relay KT, electromagnetic valve coil Y, A.C. contactor K, the time relay KT1 arranged side by side again at former control loop time relay KT two ends, the moving together contact that the power cut off delay of time relay KT1 is disconnected is arranged in the control loop of solenoid valve, and the moving together contact that the power cut off delay of time relay KT1 is disconnected and contact, the electromagnetic valve coil Y of time relay KT are cascaded.
Beneficial effect:
The utility model can be realized solenoid valve only in air compressor starting and when stopping, within the time of time relay KT, time relay KT1 time-delay just electric adhesive, because solenoid valve is short actuation time, greatly extended the working life of electromagnetic valve coil.
Four, description of drawings:
Fig. 1 is existing air compressor solenoid valve control loop structural representation;
Fig. 2 is structural representation of the present utility model.
Five, embodiment:
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 2, this air compressor starting under no load control loop comprises time relay KT, electromagnetic valve coil Y, A.C. contactor K, this air compressor starting under no load control loop is a time relay KT1 arranged side by side again at former control loop time relay KT two ends, the moving together contact that the power cut off delay of time relay KT1 is disconnected is arranged on the control loop of solenoid valve, and the moving together contact that the power cut off delay of time relay KT1 is disconnected and contact, the electromagnetic valve coil Y of time relay KT are cascaded.A.C. contactor K action, during the starting of air compressor motor, time relay KT1 contact is immediately closed, time relay KT contact Time Delay Opening, the electromagnetic valve coil Y operation realizes starting under no load.Start complete after, K disconnects, time relay KT dead electricity, simultaneously, time relay KT1 dead electricity, after the time-delay period, the moving together contact time-delay reset disconnects as KT1, electromagnetic valve coil Y dead electricity has been avoided the long-term charged phenomenon of electromagnetic valve coil Y, the working life of greatly having improved electromagnetic valve coil.
Claims (1)
1. air compressor starting under no load control loop, it comprises time relay KT, electromagnetic valve coil Y, A.C. contactor K, it is characterized in that: this air compressor starting under no load control loop is a time relay KT1 arranged side by side again at former control loop time relay KT two ends, the moving together contact that the power cut off delay of time relay KT1 is disconnected is arranged in the control loop of solenoid valve, and the moving together contact that the power cut off delay of time relay KT1 is disconnected and contact, the electromagnetic valve coil Y of time relay KT are cascaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320049759 CN202971135U (en) | 2013-01-05 | 2013-01-05 | Control loop of air compressor starting under no-load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320049759 CN202971135U (en) | 2013-01-05 | 2013-01-05 | Control loop of air compressor starting under no-load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971135U true CN202971135U (en) | 2013-06-05 |
Family
ID=48512219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320049759 Expired - Fee Related CN202971135U (en) | 2013-01-05 | 2013-01-05 | Control loop of air compressor starting under no-load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971135U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438320A (en) * | 2016-11-03 | 2017-02-22 | 广东美的暖通设备有限公司 | High-voltage protection system and method for compressor |
-
2013
- 2013-01-05 CN CN 201320049759 patent/CN202971135U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438320A (en) * | 2016-11-03 | 2017-02-22 | 广东美的暖通设备有限公司 | High-voltage protection system and method for compressor |
| CN106438320B (en) * | 2016-11-03 | 2018-05-01 | 广东美的暖通设备有限公司 | A kind of compressor high voltage protective system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20140105 |