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CN1465863A - Apparatus and method for controlling a reciprocating compressor - Google Patents

Apparatus and method for controlling a reciprocating compressor Download PDF

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Publication number
CN1465863A
CN1465863A CNA021503621A CN02150362A CN1465863A CN 1465863 A CN1465863 A CN 1465863A CN A021503621 A CNA021503621 A CN A021503621A CN 02150362 A CN02150362 A CN 02150362A CN 1465863 A CN1465863 A CN 1465863A
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China
Prior art keywords
reciprocating compressor
discharge passage
opening
closing
reciprocal compressor
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Granted
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CNA021503621A
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Chinese (zh)
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CN1281865C (en
Inventor
李仁柱
金炫中
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/073—Linear compressors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Control Of Linear Motors (AREA)

Abstract

一种控制往复式压缩机中制冷剂排放通道的开/关的装置和方法。本发明的装置包括排放通道开/关控制装置，用来控制排放通道的开/关程度，该排放通道能排出和输送往复式压缩机在压缩操作中产生的高压制冷剂。本发明的方法包括检测往复式压缩机的工作状态，将检测到的信息与预设值相比较，并确定往复式压缩机的工作状态是否不正常，并且当往复式压缩机的工作状态不正常时控制往复式压缩机的排放通道。

Figure 02150362

A device and method for controlling opening/closing of a refrigerant discharge passage in a reciprocating compressor. The apparatus of the present invention includes discharge passage opening/closing control means for controlling the degree of opening/closing of the discharge passage capable of discharging and delivering high-pressure refrigerant generated during the compression operation of the reciprocating compressor. The method of the present invention includes detecting the working state of the reciprocating compressor, comparing the detected information with a preset value, and determining whether the working state of the reciprocating compressor is abnormal, and when the working state of the reciprocating compressor is abnormal Timely control the discharge passage of the reciprocating compressor.

Figure 02150362

Description

The apparatus and method of control reciprocal compressor
Technical field
Present invention relates in general to a kind of apparatus and method that are used to control reciprocal compressor, particularly relate to the open/close apparatus and method of a kind of control discharge passage, this discharge passage is the passage of reciprocal compressor discharging refrigerant.
Background technique
In general, reciprocal compressor is used for various forms of refrigerators, and is different with rotary compressor, and it is a kind of compressor that produces and discharge high-pressure refrigerant by reciprocal compression process.
Hereinafter, will a kind of conventional method of controlling conventional reciprocating formula compressor be described with reference to figure 1 and Fig. 2.
Fig. 1 is the partial view of a conventional reciprocating formula compressor.Fig. 2 is the skeleton diagram of a conventional reciprocating formula compressor control method.
With reference to figure 1, reciprocal compressor comprises 101, one of sealed cases usually and is used for sucking compression chamber with compressed refrigerant and then discharging refrigerant and a drive unit that produces power.
More particularly, compression chamber comprises cylinder 103, cylinder head 109, and piston 107.Cylinder 103 is furnished with compression chamber 100.Cylinder head 109 is furnished with and is used for suction and expulsion valve that the suction and the discharge of refrigeration agent are led, and the top of itself and cylinder 103 links together simultaneously.Piston 107 is contained in and produces the linear reciprocating motion in the cylinder 103.
Drive unit comprises circular inner core 105, outer core 104 and permanent magnet 102a.Circular inner core 105 is enclosed within on the cylinder 103.Outer core 104 be positioned at inner core 105 on the space of a segment distance, and be furnished with coil 106, coil 106 twines round inner core 105, generation magnetic field when being carried on the coil 106 with convenient electric current.Permanent magnet 102a inner core 105 and outside between the core 104.Permanent magnet 102a is by mover 102 fixed supports, and piston 107 is also by mover 102 fixed supports.The bottom of mover 102 stretches out and forms projection 112.The displacement distance sensor 113 that moves through of projection 112 detects.Just displacement distance sensor 113 can detect the move distance of piston 107 by the move distance that detects projection 112.
Hereinafter, will the operation of reciprocal compressor be described.When electric current is loaded on the coil 106 when producing magnetic field, is carried in coil 106 and permanent magnet 102a by electric current and goes up a certain amount of magnetic force that produces and to act on the permanent magnet 102a.Yet because the electric current that is carried on the coil 106 is Ac (AC), so the field pole direction that coil 106 produces is cyclically-varying, so permanent magnet 102a periodically moves back and forth.In this case, the mover 102 of fixed support permanent magnet 102a moves with permanent magnet 102a, by the piston 107 of mover 102 fixed supports also along with mover 102 moves reciprocatingly, thereby realize that reciprocal compressor sucks and the process of compression.
Label 108 expression be a resonant spring, it can along piston 107 about both direction resonate, and make the reciprocation of piston 107.What label 111 was represented is absorbing silencer, is used for reducing reciprocal compressor in sucking operating process, the suction noise that produces when low pressure refrigerant is drawn into reciprocal compressor.What label 111a represented is suction pipe, is that reciprocal compressor is at the passage that sucks motion of operating process low pressure refrigerant and inflow reciprocal compressor.What label 110 was represented is vent silencer, is used for reducing high-pressure refrigerant and sucks in the operating process at reciprocal compressor, is compressed the discharge noise that produces when being discharged to the reciprocal compressor outside then in compression chamber.What label 110a represented is discharge pipe, is reciprocal compressor in sucking operating process, the discharge passage that compressed high-pressure refrigerant sucks and carries in compression chamber.
Next, with reference to Fig. 2 the conventional method of control conventional reciprocating formula compressor is illustrated.
In general, the method of control conventional reciprocating formula compressor 200 is to detect the motion of piston 107 by displacement distance sensor 113 as shown in Figure 1, discern and measure the motion of piston 107 with control gear 201, if excessive motion appears in piston 107, just with control gear 201 control power switchs 202.Correspondingly, cut off and connect the operation that the electric current that is carried on the coil 106 realizes controlling reciprocal compressor so respectively by cutting off and connect the power supply of supplying with reciprocal compressor 200.In addition, the conventional method of control conventional reciprocating formula compressor 200 also can realize by detecting electric current [strength, method is to be carried in electric current [strength on the reciprocal compressor 200 with current sensor senses, with control gear 201 identifications and mensuration electric current [strength, if there is excessive electric current to be carried on the reciprocal compressor 200, just by the power of control power switch 202 cut-outs from power delivery.
Yet the move distance of above-mentioned piston 107 is not a fixing shift value, but a shift value freely.Correspondingly, if an excessive electric current is carried on the reciprocal compressor 200, magnetic field just is reinforced, and magnetic field also is reinforced the effect of permanent magnet 102a, the cylinder head 109 of reciprocal compressor and the situation that piston 107 bumps against so just will occur.In addition, the controlling method of traditional reciprocal compressor wants to address this problem, mainly be to realize by move distance that detects piston or the electric current [strength that flows into coil, if the distance of motion or current's intensity surpass certain value, just be passed into that the electric current of coil interrupts the operation of reciprocal compressor on the reciprocal compressor by cut-out, but, also caused reciprocal compressor reliability variation because reciprocal compressor carries out on/off operation continually.
Summary of the invention
Therefore, an object of the present invention is to provide a kind of apparatus and method of controlling reciprocal compressor, operation by the control reciprocal compressor, it can prevent because the excessive amount of motion of piston causes the collision of piston and cylinder, thereby prolong the life-span of reciprocal compressor, the raising reliability of products also prevents because the appearance of the abnormal phenomena that the high frequent ON/OFF causes.
Other purpose of the present invention and advantage will partly be embodied in the aftermentioned specification and partly derive apparently from specification, perhaps draw from the practice of the present invention.
Aforementioned purpose with other of the present invention is by providing a kind of device of controlling reciprocal compressor to realize, this reciprocal compressor has the ON/OFF degree that a discharge passage ON/OFF control gear is controlled discharge passage, and this discharge passage is used for discharging or carry reciprocal compressor at high-pressure refrigerant that compression process produced.In addition, discharge passage ON/OFF control preferably includes the autocontrol valve that is used to open or close discharge passage, be used to instruct autocontrol valve open/close ON/OFF control switch, be used to detect the sensor of operation of reciprocating compressor state, and be used for by sensor identification and judgement information and control autocontrol valve or the control gear of ON/OFF control switch.
The aforesaid purpose with other of the present invention also can realize that this method comprises by a kind of method of controlling reciprocal compressor is provided: the serviceability that detects reciprocal compressor; Checkout value is compared with default value and judge whether reciprocal compressor is undesired; If the serviceability of reciprocal compressor is undesired, then control the discharge passage of reciprocal compressor, wherein the operation of reciprocating compressor status detection by detect piston in reciprocal compressor move distance or the electric current [strength that is carried on the reciprocal compressor carry out.
Description of drawings
These and other target and advantage of the present invention will become more obvious and be more readily understood from the description of following embodiment with reference to accompanying drawing, wherein:
Fig. 1 is the sectional view that shows conventional reciprocating formula compressor.
Fig. 2 is the skeleton diagram that shows the conventional method of control conventional reciprocating formula compressor.
Fig. 3 is the schematic diagram that shows the device of another kind control reciprocal compressor according to the embodiment of the present invention.
Fig. 4 shows the schematic diagram of controlling the device of reciprocal compressor according to the another kind of another embodiment of the present invention.
Fig. 5 A and 5B show respectively according to the motion of piston in the mode of execution in Fig. 3 and 4 and act on the schematic representation of the direction of the power on the piston.
Fig. 6 is the flow chart of the method for the control reciprocal compressor in showing according to the embodiment of the present invention.
Embodiment
Describe the specific embodiment of the present invention now in detail, embodiment is described in the accompanying drawings, the wherein identical in the text identical parts of mark indication.The following mode of execution of narrating is intended to by the reference accompanying drawing the present invention be made an explanation.
Fig. 3 shows according to a kind of schematic diagram of controlling the device of reciprocal compressor in the specific embodiment of the present invention; Fig. 4 is the schematic diagram of demonstration according to the device of another control reciprocal compressor of another embodiment of the present invention; Fig. 5 A and 5B show respectively according to the motion of piston in the embodiment of Fig. 3 and 4 and act on the schematic representation of the direction of the power on the piston.
With reference to figure 3, description be a kind of reciprocal compressor 300, suction pipe 305 links to each other with an end of reciprocal compressor 300, and sucks at reciprocal compressor and to form a passage of carrying low pressure refrigerant in the operating process.Discharge pipe 303 links to each other with the other end of reciprocal compressor 300, and sucks the discharge passage that forms a suction and conveying compressed high-pressure refrigerant in the operating process at reciprocal compressor.Autocontrol valve 304 is positioned in the discharge pipe 303, and optionally opens and closes the passage that is formed by discharge pipe 303.ON/OFF control gear 302 is connected with autocontrol valve 304, and the ON/OFF of control autocontrol valve 304.Displacement distance sensor 306 links to each other with reciprocal compressor 300, and detects the distance of the piston motion of reciprocal compressor 300.Control gear 301 is discerned and is judged the information that ON/OFF control switch 302 detects, and sends instruction to ON/OFF control gear 302, and indication autocontrol valve 304 opens and closes discharge passage selectively.
Hereinafter, will the concrete mode of above narration be described in detail.
When power supply supplies on the reciprocal compressor 300 and reciprocal compressor 300 when starting working, the piston in reciprocal compressor 300 casing top halfs will suck and squeeze operation, simultaneously periodically motion within the limits prescribed.When the suction operation is carried out, low pressure refrigerant will flow in the reciprocal compressor by suction pipe 305, and compressed high-pressure refrigerant will be discharged in reciprocal compressor in the reciprocal compressor 300, and carries by discharge pipe 303 when carrying out discharging operation.When sucking when flowing through overcurrent constantly with certain of squeeze operation, the move distance of piston has just prolonged.The excessive move distance of piston detects by displacement distance sensor 306, and detected information is sent to control gear 301.The detected information of control gear 301 identifications, judge the working state of reciprocal compressor 300 and send instruction for ON/OFF control gear 302, instruction autocontrol valve 304 with discharge passage stop with the paranormal move distance of piston after the excessive amount of motion distance scope of corresponding regulation in.Correspondingly, ON/OFF control gear 302 instruction autocontrol valves 304 are stopped discharge passage within the limits prescribed, and autocontrol valve 304 is stopped discharge passage in the scope of instruction.Discharge passage does not need to be blocked fully.Its reason is if the discharge passage of stopping is within the limits prescribed, then discharge passage just stop with the corresponding to scope of predetermined range in, and the conveying of high-pressure refrigerant just interrupt with the corresponding to scope of predetermined range in.Correspondingly, preferred discharge passage can be stopped by autocontrol valve 304, and preferential scope designs 0% in 100%.0% means that discharge passage opens fully, and 100% means that then discharge passage closes fully.The reason of using said structure is that it is can prevent in reciprocal compressor 300 is in abnormal operating range the time, reciprocal compressor is compelled to optionally to open fully or cut out fully quitting work suddenly of being caused or restarts the phenomenon of work, thereby realizes level and smooth control.
Fig. 4 be explanation according to another embodiment of the present invention, wherein with Fig. 3 in identical parts use identical mark.
As shown in Figure 4, reciprocal compressor 300 adopts the working state that current sensor 401 comes detection effect to determine reciprocal compressor at the current's intensity rather than the employing displacement distance sensor 306 of reciprocal compressor 300.Correspondingly, electric current [strength detects by current sensor 401, and sends detected information to control gear 301.After this, control gear 301 is also correspondingly discerned current's intensity and is judged whether reciprocal compressor is in abnormal working state.Then, control gear 301 is controlled the degree that discharge passage is stopped according to the degree of abnormal condition.In addition, the ON/OFF degree of preferred autocontrol valve 304 is in from 0% to 100% the scope that realizes that discharge passage closes.
With reference to figure 5A, 5B together with the described mode of execution of Fig. 3, Fig. 5 A is that explanation is in the reciprocal compressor proper functioning, high-pressure refrigerant is transported to proal cylinder head 503 and discharges under stable compression work state, under this working state, the high-pressure refrigerant that flows in the compression chamber 501 can not surpass default piston displacement.The high-pressure refrigerant that is transported to cylinder head 503 normally is transported to the suction valve (not shown) along suction pipe.On the contrary, Fig. 5 B is the state of the improper motion of explanation, wherein piston 502 has surpassed piston 502 normal move distances, reach excessive distance, discharge passage stopped with the excessive corresponding distance range of displacement distance of the piston of the paranormal move distance of piston in, correspondingly, can not produce a reaction force from the high-pressure refrigerant of discharge in the compression chamber 501 of reciprocal compressor 300, thereby stop piston 502 to cylinder head 503 motions.
Specifically, when the discharge passage of discharge pipe 303 formation is stopped in predetermined range, the refrigeration agent of discharging from reciprocal compressor 300 just flow by autocontrol valve 304 interrupt with reciprocal compressor in the corresponding scope of discharging operation, the high-pressure refrigerant that can not discharge from compression chamber 501 just is trapped in the compression chamber 501.Because in compression process, the refrigeration agent of delay produce one with the opposite hydraulic coupling of piston 502 moving direction, avoided because reciprocal compressor transships the collision of 503 of the piston 502 that causes and cylinder head.Certainly, understand easily, have in the above-described controlling method free displacement reciprocal compressor 300 piston 502 move distance and piston with fixed displacement displacement distance almost reach identical effect.Simultaneously, same effect also can rather than be set preset displacement and is obtained, and formula is by being set in electric current [strength in the value of a regulation, and according to the ON/OFF of the electric current [strength control autocontrol valve of setting 304.
Fig. 6 is the flow chart of explanation according to the control reciprocal compressor method of above embodiment.
At first with reference to figure 6, when reciprocal compressor was started working, in step S601, the move distance of reciprocal compressor 300 inner carriers 502 detected by displacement distance sensor 306.Next control gear 301 is in step S602, with actual detected to move distance compare with the preset displacement value, and judge whether the working state of reciprocal compressor 300 undesired.Just, determine that whether the move distance of piston 502 is greater than preset displacement.Next, if determine that based on the basis of judging the working state of reciprocal compressor 300 is normal, then continue to detect the move distance of piston 502, and repeatedly compare with preset displacement.On the contrary, if determine the working state abnormal of reciprocal compressor 300 based on the basis that information is judged, the move distance of piston 502 is greater than preset displacement in other words, the move distance of piston 502 is just constantly detected and compare with preset displacement, and instruction ON/OFF control gear 302 control autocontrol valve 304 in step S603.Then, ON/OFF control gear 302 transmits a suitable electrical signal to autocontrol valve 304, and autocontrol valve 304 is just controlled the opening and closing of discharge passage according to the electrical signal of S604.The work of reciprocal compressor is just carried out reposefully according to above-mentioned process.Certainly, also can be by detecting the working state that the electric current [strength of actual loaded on reciprocal compressor 300 detects reciprocal compressor 300 in step S601.In this case, correspondingly default electric current [strength value will be compared with the electric current [strength of actual loaded on reciprocal compressor 300, thereby whether the working state of the reciprocal compressor of determining in step S602 300 is normal.Certainly, the obstruction scope of discharge passage for from 0% to discharge passage stop fully 100%.
As mentioned above, the apparatus and method that are used for controlling reciprocal compressor according to the present invention can prevent by the work of control reciprocal compressor because piston that the excessive amount of motion of piston causes and the collision between the vapour cylinder head, thereby prolonged the life-span of reciprocal compressor, improved reliability of products, and prevented because the appearance of the work abnormality that the frequent ON/OFF of compressor causes.
Although embodiments more of the present invention are showed and narrate; but it will be appreciated by those skilled in the art that under the situation that does not break away from principle of the present invention and spirit and can change that protection scope of the present invention is determined by claims and its equivalent to these mode of executions.

Claims (18)

1.一种控制往复式压缩机的装置，包括用于控制排放通道的开/关程度排放通道的开/关控制装置，从往复式压缩机排出的高压制冷剂从排放通道中流通。1. A device for controlling a reciprocating compressor, comprising an opening/closing control device for controlling the opening/closing degree of a discharge passage through which high-pressure refrigerant discharged from the reciprocating compressor circulates. 2.根据权利要求1所述的装置，其特征在于所述的排放通道开/关控制装置包含自动控制阀。2. The device according to claim 1, wherein said discharge passage opening/closing control means comprises an automatic control valve. 3.根据权利要求2所述的装置，其特征在于所述的自动控制阀被安装在往复式压缩机的排放管中。3. The device according to claim 2, characterized in that said automatic control valve is installed in the discharge pipe of the reciprocating compressor. 4.根据权利要求2所述的装置，其特征在于所述的自动控制阀在0％到100％的范围内调节以阻截排放通道。4. The device of claim 2, wherein said automatic control valve is adjustable in the range of 0% to 100% to block the discharge passage. 5.根据权利要求2所述的装置，其特征在于所述的排放通道开/关控制装置进一步包含控制装置，用来识别和判断往复式压缩机的工作状态，并控制自动控制阀的开/关程度。5. The device according to claim 2, characterized in that the discharge channel opening/closing control device further includes a control device for identifying and judging the working state of the reciprocating compressor, and controlling the opening/closing of the automatic control valve off degree. 6.根据权利要求2所述的装置，其特征在于所述的排放通道开/关控制装置进一步包含开/关控制装置以用相应的电信号来指令自动控制阀的开/关程度。6. The device according to claim 2, characterized in that said discharge passage opening/closing control device further comprises an opening/closing control device for instructing the degree of opening/closing of the automatic control valve with a corresponding electric signal. 7.根据权利要求6所述的装置，其特征在于所述的排放通道开/关控制装置进一步包含控制装置，用来确定往复式压缩机的工作状态并控制开/关控制装置。7. The device according to claim 6, wherein said discharge passage opening/closing control means further comprises a control means for determining the operating state of the reciprocating compressor and controlling the opening/closing control means. 8.根据权利要求6所述的装置，其特征在于所述的排放通道开/关控制装置进一步包含移动距离传感器，其用来检测往复式压缩机中活塞的运动距离，并将检测到的运动距离信息传送给控制装置。8. The device according to claim 6, characterized in that the discharge channel opening/closing control device further comprises a movement distance sensor, which is used to detect the movement distance of the piston in the reciprocating compressor, and the detected movement The distance information is transmitted to the control unit. 9.根据权利要求6所述的装置，其特征在于所述的排放通道开/关控制装置进一步包含电流传感器，其用来检测加载在往复式压缩机上的电流强度，并将检测到的电流强度信息传送给控制装置。9. The device according to claim 6, characterized in that the discharge channel opening/closing control device further comprises a current sensor, which is used to detect the current intensity loaded on the reciprocating compressor, and the detected current intensity The information is sent to the control unit. 10.一种控制往复式压缩机的方法，包括步骤：10. A method of controlling a reciprocating compressor, comprising the steps of: 检测往复式压缩机的工作状态；Detect the working status of the reciprocating compressor; 将检测到的信息与预设值相比较，并确定往复式压缩机的工作状态是否不正常；以及Comparing the detected information with preset values and determining whether the reciprocating compressor is operating abnormally; and 如果往复式压缩机的工作状态不正常，则控制往复式压缩机的排放通道。If the working state of the reciprocating compressor is abnormal, the discharge channel of the reciprocating compressor is controlled. 11.根据权利要求10所述的方法，其特征在于所述的往复式压缩机工作状态的检测通过检测往复式压缩机内活塞的运动距离来实现。11. The method according to claim 10, characterized in that the detection of the working state of the reciprocating compressor is realized by detecting the movement distance of the piston in the reciprocating compressor. 12.根据权利要求10所述的方法，其特征在于所述的往复式压缩机工作状态的通过检测加载在往复式压缩机上的电流强度来实现。12. The method according to claim 10, characterized in that the working state of the reciprocating compressor is realized by detecting the current intensity loaded on the reciprocating compressor. 13.根据权利要求10所述的方法，其特征在于检测到的信息与预设值的比较通过控制装置来进行。13. The method according to claim 10, characterized in that the comparison of the detected information with preset values is carried out by the control means. 14.根据权利要求13所述的方法，其特征在于往复式压缩机排放通道的控制步骤包括：14. The method of claim 13, wherein the step of controlling the discharge passage of the reciprocating compressor comprises: 使控制装置对开/关控制开关发出命令，以便当往复式压缩机工作状态不正常时能指令自动控制阀打开或关闭；Make the control device issue commands to the on/off control switch, so that the automatic control valve can be commanded to open or close when the reciprocating compressor is not working properly; 指令自动控制阀打开或关闭排放通道；以及Commanding the automatic control valve to open or close the discharge passage; and 使自动控制阀控制排放通道。Let the automatic control valve control the discharge channel. 15.根据权利要求14所述的方法，其特征在于指令自动控制阀打开或关闭排放通道通过在自动控制阀上施加电信号而进行。15. The method according to claim 14, characterized in that commanding the automatic control valve to open or close the discharge passage is performed by applying an electrical signal to the automatic control valve. 16.根据权利要求10所述的方法，其特征在于排放通道在0％到100％的范围被阻截。16. The method of claim 10, wherein the discharge channel is blocked in the range of 0% to 100%. 17.根据权利要求7所述的装置，其特征在于所述的排放通道开/关控制装置进一步包含移动距离传感器，其用来检测往复式压缩机中活塞的移动距离，并将检测到的移动距离信息传送给控制装置。17. The device according to claim 7, characterized in that the discharge passage opening/closing control device further comprises a movement distance sensor, which is used to detect the movement distance of the piston in the reciprocating compressor, and the detected movement The distance information is transmitted to the control unit. 18.根据权利要求7所述的装置，其特征在于所述的排放通道开/关控制装置进一步包含电流传感器，其用来检测加载在往复式压缩机上的电流强度，并将检测到的电流强度信息传送给到控制装置。18. The device according to claim 7, characterized in that the discharge channel opening/closing control device further comprises a current sensor, which is used to detect the current intensity loaded on the reciprocating compressor, and the detected current intensity The information is sent to the control unit.
CNB021503621A 2002-06-17 2002-11-11 Device and method for controlling reciprocative compressor Expired - Fee Related CN1281865C (en)

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