CN208025904U

CN208025904U - The compressor protection control system of air-treatment unit

Info

Publication number: CN208025904U
Application number: CN201721927209.8U
Authority: CN
Inventors: 穆圣广; 潘世高; 林冠旭
Original assignee: GUANGZHOU HULIN AIR CONDITIONING EQUIPMENT Co Ltd
Current assignee: GUANGZHOU HULIN AIR CONDITIONING EQUIPMENT Co Ltd
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2018-10-30
Anticipated expiration: 2027-12-29

Abstract

The disclosure belongs to air-treatment unit field, and in particular to a kind of compressor protection control system of air-treatment unit.The system includes：First pressure sensor detects the pressure in the default pipeline, one first break signal of feedback output when the pressure is less than first threshold；First relay, when receiving first break signal, normally-closed contact disconnects so that the coil of first relay disconnects the first power supply indicator simultaneously and extinguishes；Second pressure sensor detects the pressure in the default pipeline, one second break signal of feedback output when the pressure is higher than second threshold；Second relay, when receiving second break signal, normally-closed contact disconnects so that the coil of second relay disconnects second source indicator light simultaneously and extinguishes.The disclosure can feed back the variation of unit manifold pressure and the operation conditions of air-treatment unit in time.

Description

The compressor protection control system of air-treatment unit

Technical field

This disclosure relates to air processing machine technical group field more particularly to a kind of compressor protection control of air-treatment unit System processed.

Background technology

The potential danger of the compressor generally existing in existing air-treatment unit is freezed in pipeline in the market The increase of agent charging amount and it is increased.The reason of mainly causing compressor damage at present is refrigerant charging excess, evaporator knot Frost, evaporator plugged filter, capillary or expansion valve apolegamy size not to, shut down when refrigerant migration etc..These factors The excess pressure in machine set system pipeline, either exhaust or air inlet may be greatly caused, the bearing negative of compressor can be made Lotus substantially exceeds the design bearing limit, finally will result directly in compressor damage and shuts down, and then leads to entire air processing machine Group systemic breakdown.

Utility model content

The disclosure is designed to provide a kind of compressor protection control system of air-treatment unit, and then at least one Determine to overcome above-mentioned technical problem in degree.

The embodiment of the present disclosure provides a kind of compressor protection control system of air-treatment unit, which includes：

First pressure sensor is set in the default pipeline of the unit, for detecting the pressure in the default pipeline, when One first break signal of feedback output when the pressure is less than first threshold；

First relay, normally-closed contact are initially conducting state and are electrically connected with the first pressure sensor, this The coil of one relay is electrically connected the first power supply indicator；Wherein first relay is when receiving first break signal Normally-closed contact disconnects so that the coil of first relay disconnects, which extinguishes；

Second pressure sensor is set in the default pipeline of the unit, for detecting the pressure in the default pipeline Power, one second break signal of feedback output when the pressure is higher than second threshold；Wherein the second threshold is more than the first threshold； And

Second relay, normally-closed contact are initially conducting state and are electrically connected with the second pressure sensor, this The coil of two relays is electrically connected second source indicator light；Wherein second relay is when receiving second break signal Normally-closed contact disconnects so that the coil of second relay disconnects, which extinguishes.

In embodiment of the disclosure, which further includes control circuit, with the first pressure sensor and second pressure Sensor is electrically connected；The control circuit is also electrically connected a compressor protective circuit.

In embodiment of the disclosure, first relay and the relay that the second relay is 220V AC.

In embodiment of the disclosure, the first pressure sensor is different with second pressure sensor.

The technical scheme provided by this disclosed embodiment can include the following benefits：

In the embodiment of the present disclosure, first pressure sensor detects the pressure in the default pipeline, when the pressure is less than first One first break signal of feedback output when threshold value (i.e. low-pressure state), second pressure sensor detect the pressure in the default pipeline Power, one second break signal of feedback output when the pressure is higher than second threshold (i.e. high pressure conditions), while the first relay exists Normally-closed contact disconnects the coil disconnection so that first relay, first power supply instruction when receiving first break signal Lamp extinguishes, and the second relay normally-closed contact when receiving second break signal disconnects the line so that second relay Circle disconnects, which extinguishes.In this way, the high-pressure pressure sensor and low pressure in such as pipeline can be utilized The signal of sensor detection feedback is gone out to control the actuation or disconnection of relay coil by the power supply indicator on coil A fault-signal is exported, such as high voltage fault or low voltage failure, so as to pressure in feedback channel in time at the first time Variation, in time reaction scene air-treatment unit operation conditions.

Description of the drawings

Fig. 1 shows the compressor protection control system schematic diagram of air-treatment unit in disclosure exemplary embodiment；

Fig. 2 shows the compressor protection control system signals of another air-treatment unit in disclosure exemplary embodiment Figure.

Specific implementation mode

Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will more Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Described feature, knot Structure or characteristic can be in any suitable manner incorporated in one or more embodiments.

In addition, attached drawing is only the schematic illustrations of the disclosure, it is not necessarily drawn to scale.Identical attached drawing mark in figure Note indicates same or similar part, thus will omit repetition thereof.Some block diagrams shown in attached drawing are work( Energy entity, not necessarily must be corresponding with physically or logically independent entity.

A kind of compressor protection control system of air-treatment unit is provided in this example embodiment, with reference in figure 1 It is shown, the system may include first pressure sensor 101, the first relay 102, second pressure sensor 103 and second after Electric appliance 104.Wherein：

The first pressure sensor 101 such as low-pressure sensor, be set to the unit default pipeline (such as with compression The pipeline that machine is directly or indirectly connected to, not shown) in, for detecting the pressure in the default pipeline, when the pressure is less than first One first break signal of feedback output when threshold value.

First relay 102, normally-closed contact (not shown) are initially conducting state and are passed with the first pressure Sensor 101 is electrically connected, such as LED light of the first power supply indicator of coil (not shown) electrical connection 1020 of first relay 102, this When the first power supply indicator 1020 it is bright.First relay 102 normally-closed contact when receiving first break signal disconnects So that the coil of first relay 102 disconnects, which extinguishes.

Such as high-pressure pressure sensor of the second pressure sensor 103, is set in the default pipeline of the unit (figure Do not show), for detecting the pressure in the default pipeline, the one second open circuit letter of feedback output when the pressure is higher than second threshold Number；Wherein the second threshold is more than the first threshold, and can be arranged as required to, and is not particularly limited.

Second relay 104, normally-closed contact (not shown) are initially conducting state and are passed with the second pressure Sensor 103 is electrically connected, such as LED light of coil (not shown) electrical connection second source indicator light 1040 of second relay 104, this When second source indicator light 1040 it is bright.Second relay 104 normally-closed contact when receiving second break signal disconnects So that the coil of second relay 104 disconnects, which extinguishes.

In embodiment of the disclosure, first relay, 102 and second relay 104 can be the relay of 220V AC Device.The first pressure sensor 101 and second pressure sensor 103 are different, such as the maximum pressure detection value that can be born is not On an equal basis.It should be noted that the concrete structures such as normally-closed contact and coil of first relay 102 and the second relay 104 can With reference to the prior art, details are not described herein again.

In a specific embodiment, the technical solution that the utility model embodiment provides increases two in control circuit The relay of a such as 220V AC, such as No. 1 relay are used for feeding back low-voltage signal, and No. 2 relays are used for feeding back high-voltage signal, profit With design controlling such as the signal of high-pressure pressure sensor and low-pressure sensor detection feedback output in the pipeline of unit The actuation or disconnection of two relay coils are made, and then is gone out by the power supply indicator on coil and exports a fault-signal, such as High voltage fault or low voltage failure, so as at the first time in time in feedback channel pressure variation, reaction scene in time Air-treatment unit operation conditions.

The operation principle of the system can be：Such as when low-pressure sensor detects the hypotony in pipeline, Low-pressure sensor disconnects, and the break signal fed back makes the coil of No. 1 relay not be attracted.When No. 1 relay When being disconnected when coil is not attracted, the power supply indicator on coil goes out, and normally-closed contact is conducting state, i.e. No. 1 relay A fault-signal is exported, low voltage failure is such as represented.When high-pressure pressure sensor detects the hypertonia in pipeline, high pressure Pressure sensor disconnects, and the break signal fed back makes the coil of No. 2 relays not be attracted.When No. 2 relay coils It is not attracted when disconnecting, the power supply indicator on coil goes out, and normally-closed contact is conducting state, i.e. No. 2 relays outputs one A fault-signal, such as represents high voltage fault.Thus can at the first time in time in feedback channel pressure variation, it is anti-in time The operation conditions for answering the air-treatment unit at scene takes treatment measures convenient for related personnel, ensures system safe and reliable operation.

In embodiment of the disclosure, refering to what is shown in Fig. 2, on the basis of the above embodiments, which can also include control Circuit processed such as PLC control circuits etc., the control circuit can be with the first pressure sensors 101 and second pressure sensor 103 are electrically connected, and the control circuit can also be electrically connected a compressor protective circuit.Specifically, for example when first pressure When feedback the first break signal of output of force snesor 101 or the second pressure sensor 103 feedback exports the second break signal When, the control circuit, which can control, starts compressor protective circuit work to prevent from burning because of factors such as compressor such as overcurrents Caused loss, and then the service life of compressor can be greatly prolonged, while integral device system is also improved to a certain extent The automatization level of system.

It should be noted that herein, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in process, method, article or equipment including the element.

In short, those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to this public affairs The other embodiments opened.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, Purposes or adaptive change follow the general principles of this disclosure and include the undocumented public affairs in the art of the disclosure Know common sense or conventional techniques.The description and examples are only to be considered as illustrative, the true scope and spirit of the disclosure by The attached claims are pointed out.

Claims

1. a kind of compressor protection control system of air-treatment unit, which is characterized in that the system includes：

First pressure sensor is set in the default pipeline of the unit, for detecting the pressure in the default pipeline, when the pressure One first break signal of feedback output when power is less than first threshold；

First relay, normally-closed contact are initially conducting state and are electrically connected with the first pressure sensor, this first after The coil of electric appliance is electrically connected the first power supply indicator；Wherein first relay is normally closed when receiving first break signal Contact disconnects so that the coil of first relay disconnects, which extinguishes；

Second pressure sensor is set in the default pipeline of the unit, for detecting the pressure in the default pipeline, when One second break signal of feedback output when the pressure is higher than second threshold；Wherein the second threshold is more than the first threshold；And

Second relay, normally-closed contact are initially conducting state and are electrically connected with the second pressure sensor, this second after The coil of electric appliance is electrically connected second source indicator light；Wherein second relay is normally closed when receiving second break signal Contact disconnects so that the coil of second relay disconnects, which extinguishes.

2. Protection control system according to claim 1, which is characterized in that the system further includes control circuit, with described One pressure sensor and second pressure sensor are electrically connected；The control circuit is also electrically connected a compressor protective circuit.

3. Protection control system according to claim 1, which is characterized in that first relay and the second relay are The relay of 220V AC.

4. Protection control system according to claim 1, which is characterized in that the first pressure sensor and second pressure pass Sensor is different.