CN201946955U

CN201946955U - Novel startup control circuit of duplex winding compressor

Info

Publication number: CN201946955U
Application number: CN 201020628697
Authority: CN
Inventors: 顾恒; 印爱荣; 于贝
Original assignee: Jiangsu Josun Air Conditioner Co Ltd
Current assignee: Jiangsu Josun Air Conditioner Co Ltd
Priority date: 2010-11-29
Filing date: 2010-11-29
Publication date: 2011-08-24
Anticipated expiration: 2020-11-29

Abstract

The utility model relates to a novel startup control circuit of a duplex winding compressor, which comprises a first contactor and a second contactor which are connected in parallel on a control power supply, wherein the first contactor is connected in parallel on the control power supply after being connected in series with a first normally open switch of the second contactor; a normally closed switch of a second delay relay is connected in parallel on the first normally open switch of the second contactor; the second contactor is connected in parallel on the control power supply after being connected in series with the first normally open switch of the first contactor and the normally open switch of the first delay relay; the normally open switch of the first delay relay is connected in parallel with a third normally open switch of the second contactor; and the delay working time of the first delay relay is smaller than the delay working time of the second delay relay. As the two delay relays and the two delay relay switches are matched with the contactors of two windings, the power-off protection of the operation of a single winding of the two windings is realized in circuit, the work safety performance of the double windings is high, the burndown of the compressor can be effectively avoided, and the service life of the compressor is prolonged.

Description

The novel start-up control circuit of double winding compressor

Technical field

The utility model relates to a kind of compressor start control circuit, is the novel start-up control circuit of a kind of double winding compressor specifically.

Background technology

The method of existing double winding compressor start control is: satisfy winding elder generation earlier and start, another winding of time-delay back starts finishes the double winding startup, and compressor is in complete operating state.

But start earlier at a winding, another winding accident of time-delay back can't normally start, and compressor easily burns; Regularly close winding as the control of additional period relay, the compressor operation vibrations make the malfunctioning or damage of the time relay, and same compressor easily burns, and the compressor security performance is low, and useful life is short.

Summary of the invention

Double winding compressor start control circuit easily burns compressor in the prior art in order to overcome, security performance is low, deficiencies such as useful life is short, the utility model provides a kind of double winding compressor novel start-up control circuit, stop the possibility that compressor burns from circuit, guarantee that compressor is safe in utilization.

The technical solution adopted in the utility model is: the novel start-up control circuit of a kind of double winding compressor, comprise first contactor, second contactor and control power supply, first contactor, second contactor all is connected in parallel on the control power supply, its technical characterstic is that described control power supply also is parallel with two delay control circuits, first delay control circuit is by first contactor, second normal open switch, second contactor, second normally closed switch, first time-delay relay is composed in series, second delay control circuit comprises second time-delay relay, described first contactor is connected and is connected in parallel on behind second contactor, first normal open switch on the control power supply, is parallel with the second time-delay relay normally closed switch on second contactor, first normal open switch; Described second contactor is connected and is connected in parallel on behind first contactor, first normal open switch, the first time-delay relay normal open switch on the control power supply, and the first time-delay relay normal open switch is parallel with second contactor the 3rd normal open switch; The first time-delay relay delay working time is less than the second time-delay relay delay working time.

First contactor control compressor, first winding, second contactor control compressor, second winding, cooperates the switch of first and second contactor to realize the power-off protection that first winding works independently at first and second time-delay relay.

Further, the described first time-delay relay delay working time 0.5S, the second time-delay relay delay working time 0.7S.

During the control power connection, second time-delay relay is connected the work of control power supply trigger, first contactor is connected the energising of control power supply through the second time-delay relay normally closed switch, this moment first contactor first and second normal open switch closure, the compressor first winding work, first time-delay relay is connected the work of control power supply trigger through second contactor, second normally closed switch, first contactor, second normal open switch simultaneously; The first time-delay relay normal open switch closure behind first time-delay relay time-delay 0.5S, second contactor is through first contactor, first normal open switch, the first time-delay relay normal open switch is connected the energising of control power supply, this moment second contactor first, three normal open switch closures, second contactor, second normally closed switch disconnects, the compressor second winding work, first time-delay relay is disconnected by second contactor, second normally closed switch and controls being connected of power supply, first time-delay relay is not worked, behind second time-delay relay time-delay 0.7S, the second time-delay relay normally closed switch disconnects, first contactor is connected the control power supply through second contactor, first normal open switch, the first winding continuous firing, compressor is in complete operating state; Behind first time-delay relay time-delay 0.5S, second contactor still is in power failure state, and second winding is not worked, when second time-delay relay is delayed time 0.7S, the second time-delay relay normally closed switch disconnects, second contactor, first normal open switch is in open mode, and first contactor is not worked with control power cut-off, first winding outage, compressor is not when being in complete operating state, the power supply of control circuit automatic disconnection compressor two windings, compressor-free burns hidden danger, the security performance height.

The utility model adopts contactor that two time-delay relays, two time-delay relay switches cooperate two windings to realize the power-off protection of single winding work the double winding from circuit; doublewound work safety height; can effectively stop burning of compressor, prolong compressor useful life.

Description of drawings

Fig. 1 is the utility model circuit diagram.

Among the figure: control power supply U, the first contactor KM1, first contactor, the first normal open switch KM11, first contactor, the second normal open switch KM12, the second contactor KM2, second contactor, the first normal open switch KM21, second contactor, the second normally closed switch KM22, second contactor the 3rd normal open switch KM23, the first time-delay relay KT1, the first time-delay relay normal open switch KT11, the second time-delay relay KT2, the second time-delay relay normally closed switch KT21.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Shown in Figure 1, the novel start-up control circuit of double winding compressor comprises control power supply U, the first contactor KM1, first contactor, the first normal open switch KM11, first contactor, the second normal open switch KM12, the second contactor KM2, second contactor, the first normal open switch KM21, second contactor, the second normally closed switch KM22, second contactor the 3rd normal open switch KM23, the first time-delay relay KT1, the first time-delay relay normal open switch KT11, the second time-delay relay KT2 and the second time-delay relay normally closed switch KT21.

The second time-delay relay KT2 is connected in parallel on the control power supply; The first time-delay relay KT1 connects and is connected in parallel on behind second contactor, the second normally closed switch KM22, first contactor, the second normal open switch KM12 on the control power supply; First contactor is connected and is connected in parallel on behind second contactor, first normal open switch on the control power supply, is parallel with the second time-delay relay normally closed switch on second contactor, first normal open switch; Second contactor is connected and is connected in parallel on behind first contactor, first normal open switch, the first time-delay relay normal open switch on the control power supply, and the first time-delay relay normal open switch is parallel with second contactor the 3rd normal open switch; The first time-delay relay delay working time is less than the second time-delay relay delay working time.

Claims

1. novel start-up control circuit of double winding compressor, comprise first contactor (KM1), second contactor (KM2) and control power supply (U), first contactor, second contactor all is connected in parallel on the control power supply, it is characterized in that: described control power supply (U) also is parallel with two delay control circuits, first delay control circuit is by first time-delay relay (KT1), second contactor, second normally closed switch (KM22), first contactor, second normal open switch (KM12) is in series, second delay control circuit comprises second time-delay relay (KT2), be connected in parallel on behind described first contactor (KM1) series connection second contactor, first normal open switch (KM21) on the control power supply, be parallel with the second time-delay relay normally closed switch (KT21) on second contactor, first normal open switch; Be connected in parallel on the control power supply behind described second contactor (KM2) series connection first contactor, first normal open switch (KM11), the first time-delay relay normal open switch (KT11), the first time-delay relay normal open switch is parallel with second contactor the 3rd normal open switch (KM23); The first time-delay relay delay working time is less than the second time-delay relay delay working time.

2. the novel start-up control circuit of double winding compressor according to claim 1 is characterized in that: described first time-delay relay (KT1) delay working time 0.5S, second time-delay relay (KT2) delay working time 0.7S.