CN2342134Y

CN2342134Y - Automatic controller for air compressor

Info

Publication number: CN2342134Y
Application number: CN 98204389
Authority: CN
Inventors: 张明义
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-05-11
Filing date: 1998-05-11
Publication date: 1999-10-06
Anticipated expiration: 2008-05-11

Abstract

The utility model relates to an automatic controller for air compressor. A controller matches with an electromagnetic switch for controlling an air compressor and selecting the operation in the form of empty car / loaded car form or automatic stop / start form. When the air compressor operates in the form of empty state and exceeds the special time, a vehicle can be automatically stopped and change the operation in the form of automatic stop / start form. If parking time is less than the special time, the vehicle can recover the operation in the form of the empty / loaded car for avoiding empty operation and saving power. The utility model can avoid the frequent stop / start of the vehicle and protect a motor.

Description

The air compressor automatic controller

The utility model relates to a kind of air compressor automatic controller, refers to a kind of air compressor of can controlling automatically especially with empty wagons/loaded vehicle form or automatic stopping/starting form running, and the automatic controller that can avoid meaningless power consumption and motor to burn.

Air compressor is very general in the common mechanical utilization, it mainly is to utilize motor to inflate and be stored in the air bucket, treats that air bucket pressure rises to when setting unit, promptly stops to inflate, when air bucket pressure reduced because of use, motor was then inflated to the air bucket again.Air compressor was to utilize " empty wagons/loaded vehicle " form to make the do action of abovementioned steps in the past, so-called empty wagons is meant that air compressor inflates to the air bucket, make its pressure reach setting pressure (following) sincerely with the tentative 7kg/cm of being of setting pressure, even motor idle running is no longer inflated, this moment, air bucket pressure also no longer raise.The variable setting of the upper and lower limit of pressure is decided on demand.

The loaded vehicle state is meant again: when the air bucket drops to minimum setting pressure (minimum setting pressure is ordered temporarily and be 5kg/cm) herein because of using pressure, even air compressor inflate again to the air bucket, when its pressure arrives 7kg/cm complete vehicle curb condition.

Aforesaid " empty wagons/loaded vehicle " form no doubt can be controlled air compressor with air bucket pressure and whether inflate, yet this kind circulation form but has the suspicion of waste electric power.Though air compressor is no longer inflated to the air bucket at complete vehicle curb condition, but its motor is still in continuing spinning, it is 1/3rd of the power consumption down that runs well in the electric power that idling conditions is consumed down, this electric power of 1/3rd is pure consumption, can not bring any task performance, therefore, longer when empty wagons time of air compressor, institute's meaningless power consumption that causes i.e. height relatively more.

Make air compressor with the running of " automatic stopping/starting " form for improving the shortcoming of aforementioned electricity consumption waste, also having, what is called " automatic stopping/starting " form is meant that air compressor inflates to the air bucket, when making its pressure reach 7kg/cm, even motor shuts down.When the air bucket pressure of waiting drops to 5 kg/cm because of use by 7kg/cm, inflate to the air bucket even air compressor is reset, arrive 7kg/cm until its pressure, motor shuts down.

Aforesaid " automatic stopping/starting " is even form air compressor automatic stopping when the air bucket arrives certain pressure, reset again when the pressure of waiting descends and inflate, this kind mode no doubt can be improved the power wastage that aforementioned " empty wagons/loaded vehicle " form causes under complete vehicle curb condition, but this kind mode of operation also has certain restriction.With regard to the motor operations characteristic, the number of times of starting must not be above six times in the one hour, otherwise the temperature that will cause motor coil raises and causes burning, in other words, the air compressor that uses motor to inflate promptly is subjected to per hour must not re-lighting surpass six times restriction, otherwise promptly might burn, this shows, this kind mode of operation is not also use up safety.

The utility model main purpose is to provide a kind of air compressor automatic controller that improves power consumption efficiency and can guarantee Electrical Safety, mainly be to make air compressor mix use empty wagons/loaded vehicle form and automatic stopping/starting form running, under different user modes, automatically select to avoid meaningless power consumption and guarantee motor running safety with this with different form runnings.

The technical solution of the utility model is to provide a kind of air compressor automatic controller, it is characterized in that: the Air Compressor bucket is provided with a system pressure valve, the system pressure valve outlet is connected to respectively on the suction valve and a pneumatic cylinder of air compressor, adorn a sensitive switch on this pneumatic cylinder, cooperate a control gear to make air compressor between empty wagons/loaded vehicle form and automatic stopping/two kinds of mode of operations of starting form, switch again, this control gear includes a controller, one sensitive switch and of being located at the controller input end is located at the magnetic switch of controller output end, wherein sensitive switch is corresponding to aforementioned pneumatic cylinder, and magnetic switch then is connected with the motor of power supply and air compressor.

Aforesaid air compressor automatic controller is characterized in that: this controller is that the microprocessor by a tool timing drive function constitutes, according to the situation of setting select automatically empty wagons/loaded vehicle or automatically starting/parking turn round.

Aforesaid air compressor automatic controller is characterized in that: this sensitive switch is a Normally closed type switch.

Aforesaid air compressor automatic controller is characterized in that: be provided with a speed controller between this system pressure valve and suction valve, to postpone empty wagons to the loaded vehicle time, make it with less strength starter motor.

Characteristics of the present utility model mainly are to utilize the speed of increasing and decrease (stop or empty wagons time length) of this control gear along with air compressor air bucket pressure, change the mode of operation of air compressor, when air compressor operates under empty wagons/loaded vehicle form, and the empty wagons time is when longer, promptly automatically switch to automatic stopping/starting form, and be vehicle stop state, use and end the meaningless power consumption of air compressor under complete vehicle curb condition; And for example the dead time of air compressor shorter, for considering the coil load problem of motor, then make it return under original empty wagons/loaded vehicle starting form and operate.Therefore, not only can effectively solve air compressor and be in power wastage problem under the complete vehicle curb condition for a long time, also can avoid back and forth starting for the infringement of motor.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is the utility model air compressor structural representation.

Fig. 2 is the utility model line block diagram.

The structural representation of relevant the utility model air compressor portion, see also shown in Figure 1, this air compressor includes an air bucket 10, one cylinder 18, is located at the cylinder head 11 of cylinder 18 upper ends, be divided into suction valve 12, outlet valve 13 and relief arrangement 19, on the cylinder head 11 and be located at pistons 15, in the cylinder head 11 and drive the reciprocating motor 16 of piston 15, wherein:

Be provided with a system pressure valve 20 on the air bucket 10, this system pressure valve 20 exports on the suction valve 12 and a pneumatic cylinder 17 that is connected to respectively on the cylinder head 11, wherein 12 of system pressure valve 20 and suction valves are provided with a speed controller 21, utilize speed controller 21 to make motor be able to less strength starting in order to postpone the time of empty wagons to loaded vehicle.

And aforementioned system pressure valve 20 is the upper and lower limits in order to control air bucket 10 internal pressures, when arriving the system pressure valve 20 that last pressurized air in limited time passes through under the open modes from air bucket 10, making a sensitive switch 31 be to pneumatic cylinder 17 again opens circuit, and rapidly by speed controller 21, arrive relief arrangement 19 at last suction valve 12 is opened, make air compressor be complete vehicle curb condition (not inflating).

When pressure drops in limited time, the speed controller 21 of flowing through slowly of the pressurized air in the relief arrangement 19 is released to atmosphere from system pressure valve 20 again, and this moment, system pressure valve 20 was closed, and sensitive switch 31 is channel status.

During aforementioned again air compressor entry into service is the loaded vehicle state, its motor 16 will drive piston 15 knee-actions, when air-breathing, suction valve 12 is opened, outlet valve 13 is closed, and air is sucked in the cylinder 18, during exhaust, suction valve 13 cuts out, outlet valve 13 is opened, and pressurized air is sent in the air bucket 10 through outlet valve 13, and air bucket 10 pressure are upwards increased progressively by 0kg/cm, at this moment, the system pressure valve 20 on the air bucket 10 is closed condition.

When air bucket 10 internal pressures arrive 7kg/cm, system pressure valve 20 will be opened, pressurized air fast traverse controller 21, and the relief arrangement 19 to the suction valve 12 backs down suction valve 12 again, it can't be closed, that is can't inflate.

Aforementioned again system pressure valve 20 is except that the pressure of control air bucket 10, and other controls pneumatic cylinder 17 with its piston of start, and the mode of operation that cooperates another control gear to make empty wagons/loaded vehicle form or automatic stopping/starting form is switched.

This control gear is as shown in Figure 2, and it includes a controller 30, a sensitive switch 31 that is connected with controller 30 input ends and a magnetic switch 32 that is connected with controller 30 output terminals, wherein:

This controller 30 can be made of a microprocessor, and it has timing and drives function.

This magnetic switch 32 is to be connected with controller 30 with field coil, and its contact then is connected with the motor 16 of power supply and air compressor respectively, that is, magnetic switch 32 is the runnings in order to control motor 16.

As under automatic stopping/starting form, then the on-state of sensitive switch 31 is to represent starting state, and it still sees through controller 30 makes magnetic switch 32 be excitatory state, makes motor 16 state that keeps on the go.When sensitive switch 31 is open-circuit condition, then represent vehicle stop state, owing to be under automatic stopping/starting form, to work,, make motor 16 shut down so controller 30 will not make magnetic switch 32 excitatory.

And aforesaid pneumatic cylinder 17 is to be located at sensitive switch 31 belows, and its piston also is aligned with the action film of sensitive switch 31.When air bucket 10 internal pressure no show 7kg/cm, its piston is failure to actuate, and sensitive switch 31 still is on-state, when air bucket 10 internal pressures arrive 7kg/cm, then push up on the piston of pneumatic cylinder 17, make sensitive switch 31 be the open circuit shape, and whether continue the running of motor 16 by controller 30 controls.

Can find out main structure of the present utility model and device by above-mentioned explanation, then be to do to switch to mix with two kinds of mode of operations such as empty wagons/loaded vehicle form and automatic stopping/starting form to use as for aforementioned means, with the running of control air compressor.It mainly is to set a time limit by controller 30, as the switching condition of two kinds of mode of operations.This time limit perseverance is less than 60/6, and wherein 60 to be meant one hour be 60 minutes, and 16 1 hours number of starts of 6 finger motors must not be more than 6 times.

In present embodiment, be that this time limit is ordered is more than 8 minutes or 8 minutes, with regard to aforementioned control gear, open circuit (air bucket internal pressure arrival 7kg/cm when sensitive switch 31, caused by pneumatic cylinder 17) time, controller 30 will be with empty wagons/loaded vehicle form control magnetic switch 32, even then sensitive switch 31 is to be open-circuit condition when being lower than 8 minutes, controller 30 still makes magnetic switch 32 excitatory, and motor 16 is operated with idling conditions.

As 31 open circuit times of sensitive switch (being the empty wagons time) when being higher than 8 minutes, then controller 30 will switch to automatic stopping/starting form by empty wagons/loaded vehicle form, this moment, controller 30 made magnetic switch 32 no longer excitatory, then motor 16 promptly shuts down, be vehicle stop state, these all meanings of doing that move are: when the empty wagons time of air compressor is longer, for avoiding it to cause too many energy waste, be about to it and switch to automatic stopping/originate mode, and be vehicle stop state, the power consumption when saving idle running.

Again under automatic stopping/starting form, as dead time of air compressor being shorter than 8 minutes, for consider air compressor per hour number of starts should not then switch the car that makes the return trip empty/loaded vehicle form running more than under 6 times the restriction.

Claims

1 one kinds of air compressor automatic controllers, it is characterized in that: the Air Compressor bucket is provided with a system pressure valve, the system pressure valve outlet is connected to respectively on the suction valve and a pneumatic cylinder of air compressor, adorn a sensitive switch on this pneumatic cylinder, cooperate a control gear to make air compressor between empty wagons/loaded vehicle form and automatic stopping/two kinds of mode of operations of starting form, switch again, this control gear includes a controller, one sensitive switch and of being located at the controller input end is located at the magnetic switch of controller output end, wherein sensitive switch is corresponding to aforementioned pneumatic cylinder, and magnetic switch then is connected with the motor of power supply and air compressor.

2 air compressor automatic controllers according to claim 1 is characterized in that: this controller is that the microprocessor by a tool timing drive function constitutes, according to the situation of setting select automatically empty wagons/loaded vehicle or automatically starting/parking turn round.

3 air compressor automatic controllers according to claim 1 is characterized in that: this sensitive switch is a Normally closed type switch.

4 air compressor automatic controllers according to claim 1 is characterized in that: be provided with a speed controller between this system pressure valve and suction valve, to postpone empty wagons to the loaded vehicle time, make it with less strength starter motor.