CN202182015U

CN202182015U - Automatic transfer switch dedicated for double-voltage water pump

Info

Publication number: CN202182015U
Application number: CN2011202918607U
Authority: CN
Inventors: 王晛
Original assignee: SUZHOU GP ENTERPRISES CO Ltd
Current assignee: GP Enterprises Co Ltd
Priority date: 2011-08-12
Filing date: 2011-08-12
Publication date: 2012-04-04
Anticipated expiration: 2021-08-12

Abstract

The utility model discloses an automatic transfer switch dedicated for a double-voltage water pump. The automatic transfer switch comprises a protection box and a control board; the control board is mounted in the protection box and comprises a power supply circuit, a singlechip, a voltage detection circuit, a main switch and a transfer switch; the power supply circuit supplies power for the voltage detection circuit, the singlechip and other parts; and the detection result of the voltage detection circuit is input to the singlechip, and the singlechip controls the transfer switch to act after analyzing the result. The utility model aims to provide the automatic transfer switch dedicated for a double-voltage water pump, which can switch over the series-parallel connection relationship of a motor winding according to the loop voltage of the power circuit.

Description

A kind of pair of automatic change-over that the voltage water pump is special-purpose

Technical field

The utility model relates to a kind of automatic change-over, is specifically related to the special-purpose automatic change-over of a kind of pair of voltage water pump.

Background technique

A kind of water pump is arranged in the market, and it can be worked under 230V and two kinds of voltages of 115V, is built-in with a kind of mechanical switch switch, can let water pump under 115V or 230V voltage, work.Because this mechanical switch need be taken the outlet lid apart and confirm the position of pump switch before the client uses, cumbersome.In case switch is in the position of mistake, water pump just may be burnt.Based on this demand, we have designed this electronic switch, can be according to power loop voltage, and the series parallel connection of automatic switchover motor windings relation.Removed the damage that the careless wrong plug power supply of user causes from.We can also the integrate motor rotation-clogging protection, the infringement of motor is reduced to minimum to stall, and the motor behind the stall still can normally use after fixing a breakdown like this, can not produce too much influence to the life-span.

The model utility content

The utility model purpose provide a kind of can be according to power loop voltage, the special-purpose automatic change-over of a kind of pair of voltage water pump of the series parallel connection of automatic switchover motor windings relation.

For achieving the above object, the technological scheme that the utility model adopts is:

A kind of pair of automatic change-over that the voltage water pump is special-purpose; Include protection box and control panel; In the said protection box control panel is housed, control panel includes power circuit, single-chip microcomputer, voltage detecting circuit, main switch and throw over switch, and said power circuit is given partly power supply such as voltage detecting circuit and single-chip microcomputer; The voltage detecting circuit testing result inputs to single-chip microcomputer, control transformation switch motion after the single-chip microcomputer analysis.

As preferably, said coil parallel-series switch device is K switch 1, the K2 of relay.

As preferably, said main switch is K3, and K3 is the on/off relay.

As preferably; Said power supply is given power supplies such as voltage detecting circuit and single-chip microcomputer, and the output voltage of voltage detecting circuit is supplied with single-chip microcomputer, and control K1 and K2 open and close after the single-chip microcomputer analysis; After K1 and K2 get to the tram; K3 connects, and automatic change-over can change the series parallel connection relation of motor windings according to line voltage control relay switch.Can detect motor operating current, judge whether seriously overload of motor, reach the purpose of overload protection according to running current under the current line voltage.

Because the technique scheme utilization, the utility model compared with prior art has advantage and effect:

(1) client can be closed heart power and whether motor matees, and needn't take connector cover apart, stirs the mechanical switch switching position.Also can save the control of the switching position for the manufacturer, reduce mistake at production link.And, be very easily to the client that minority need be worked under the different electrical power of being everlasting.Though motor all has heat protector, the heat protector reaction is slow, overcurrent protection has been arranged as supplementary means, when stall takes place, can reduce the infringement of motor.

(2) adopt the sequential of the control that single-chip microprocessor MCU can simplifying relay.Can change the controlling method of circuit board flexibly.Motor rotation blockage and overload protection are realized through detecting current of electric, can be when motor rotation blockage, under the also lower situation of temperature, cut off the electricity supply automatically.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model;

Accompanying drawing 2 is the circuit diagram of the utility model.

In the above accompanying drawing: 1, power circuit; 2, single-chip microcomputer; 3, voltage detecting circuit; 4, main switch; 5, throw over switch.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment: a kind of pair of automatic change-over that the voltage water pump is special-purpose shown in accompanying drawing 1, accompanying drawing 2, includes power supply and control panel; Said control panel is contained in the protection box, and control panel includes power circuit, single-chip microcomputer, voltage detecting circuit, main switch and throw over switch relay K 1 and K2, and the throw over switch relay is used for changing the series parallel connection relation of motor windings; Main switch is K3, and K3 is the on/off relay, and power supply supplies power for voltage detecting circuit and single chip part; Voltage detecting circuit inputs to single-chip microcomputer with testing result; Control transformation K switch 1 opens and closes with K2 after the single-chip microcomputer analysis, after K1 and K2 get to the tram, and the K3 connection; Avoid the moment switching current like this, prolonged the relay life-span.If find in the running that voltage and relay position do not meet, break off K3 earlier, change K1 then, K2 does the life-span that can prolong relay like this.

The utility model can change staor winding series connection or parallel connection according to voltage through two voltage water pump special switch.Windings in series during 230V, winding parallel connection during 115V.Through the actuating of relay, control panel can alternative switch.Relay has the normally-open normally-close contact, through the diverse location of relay contact, plays the effect same with switch.When motor rotation blockage, can detect one than the big electric current that manys that runs well, general inrush current is also very big, but the time is very short, if more than the lasting 3S of locked rotor current, stall, main switch deenergization have taken place in expression.The stall of 3S can not make stator coil that very big temperature rise is arranged.Protected the insulation of enameled cable.

The utility model technical problem to be solved is the potential safety hazard that the position of mechanical switch causes owing to human negligence; Owing to adopted two voltage water pump dedicated convert switches; Circuit board can change the series parallel connection of motor windings automatically according to the voltage of being inserted through relay; The assurance motor runs well, and has increased the Security of machine operation.Motor overload has heat protector that protection is provided during stall, heat protector can break off when motor temperature is spent above 125.Can guarantee the safety of products use like this, stall can be influential to the insulation life of motor, though heat protector can provide the assurance on the safety, but can not guarantee that but motor properties is not influenced by stall.We can add the motor that overcurrent protection, particularly power ratio are bigger for this reason, when stall, just need not wait until on the temperature like this and protect to 125 degree again, can be behind stall 3S, and directly outage, protection winding insulation layer.

The foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection domain of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the utility model.

Claims

1. automatic change-over that two voltage water pumps are special-purpose; Include protection box and control panel; It is characterized in that: in the said protection box control panel is housed, control panel includes power circuit, single-chip microcomputer, voltage detecting circuit, main switch and throw over switch, and said power circuit is given partly power supply such as voltage detecting circuit and single-chip microcomputer; The voltage detecting circuit testing result inputs to single-chip microcomputer, control transformation switch motion after the single-chip microcomputer analysis.

2. the special-purpose automatic change-over of a kind of pair of voltage water pump according to claim 1, it is characterized in that: said throw over switch is the series-parallel relay switch K1 of coil, K2, through the K switch 1 of relay, the series parallel connection relation that K2 changes motor windings.

3. the special-purpose automatic change-over of a kind of pair of voltage water pump according to claim 1, it is characterized in that: said main switch is K3, and K3 is the on/off relay.

4. the special-purpose automatic change-over of a kind of pair of voltage water pump according to claim 1; It is characterized in that: said power supply is given power supplies such as voltage detecting circuit and single-chip microcomputer; The output voltage of voltage detecting circuit is supplied with single-chip microcomputer; Control K1 and K2 open and close after the single-chip microcomputer analysis, after K1 and K2 get to the tram, and the K3 connection.