CN1292170C - Low load operation device and method for reciprocating compressor - Google Patents
Low load operation device and method for reciprocating compressor Download PDFInfo
- Publication number
- CN1292170C CN1292170C CN 02117316 CN02117316A CN1292170C CN 1292170 C CN1292170 C CN 1292170C CN 02117316 CN02117316 CN 02117316 CN 02117316 A CN02117316 A CN 02117316A CN 1292170 C CN1292170 C CN 1292170C
- Authority
- CN
- China
- Prior art keywords
- mentioned
- compressor
- reciprocal compressor
- external temperature
- low load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The present invention relates to a low load operation device and a method for a reciprocating compressor, which belongs to a low load operation device and a method for reciprocating compressors of a refrigerator and an air conditioner. The operation device comprises a triggering transistor, a reciprocating compressor, a capacitor, a switch, an external temperature sensor and a microcomputer, wherein the triggering transistor is used for controlling the powering of the compressor, and the reciprocating compressor is capable of changing strokes via a motor; the capacitor is capable of reducing the resistance of the compressor, the switch is connected with the capacitor in parallel, and the external temperature sensor is capable of sensing external temperatures. After the reciprocating compressor starts, the microcomputer controls the switch to be on and off via external temperatures sensed by the external temperature sensor and according to the comparative result of the external temperatures and a preset temperature. The present invention is capable of reducing high voltage caused by reverse force in the low load operation of the reciprocating compressor and is capable of effectively preventing the triggering transistor from damaging.
Description
Technical field
The present invention relates to a kind of low load operation device that is used for the reciprocating type compression of refrigerator and air conditioner.
Background technique
General reciprocal compressor (Linear Compressor) is not owing to adopt crankshaft, and to convert in the straight line motion process frictional loss to little so will rotatablely move.So, aspect efficient than the efficient height of other compressors.In addition, reciprocal compressor is used at refrigerator or air conditioner, utilize to change stroke (STROKE) voltage that adds to reciprocal compressor, can change compression ratio and control the change of refrigerating capacity.
Fig. 1 is the circuit block diagram of the rotating device of general reciprocal compressor.
As shown in Figure 1, the rotating device of above-mentioned reciprocal compressor includes following structure: trigger triode Tr, reciprocal compressor 100, capacitor C, discharge and recharge control device 400, current detecting part 200 and microcomputer 300.When being provided with commonly used ac power supply, the above-mentioned trigger triode Tr that is used to control electric current is unlocked according to the trigger signal of input or is closed and controls electric current and flow into to reciprocal compressor; Above-mentioned reciprocal compressor 100 can change stroke (displacement) by motor and regulate refrigerating capacity; Above-mentioned capacitor C works the buffer function of the resistance components of dwindling above-mentioned reciprocal compressor 100; Above-mentioned charging, the discharge that discharges and recharges the above-mentioned electric capacity of control device 400 adjusting in parallel with above-mentioned capacitor C; Above-mentioned current detecting part 200 detects the electric current that flows into to above-mentioned reciprocal compressor 100 from above-mentioned trigger triode Tr; Above-mentioned microcomputer 300 is according to the above-mentioned adjusting portion 400 that discharges and recharges of current detection signal control of the above-mentioned current detecting part 200 of input.
Below, the driving with above-mentioned rotating device reciprocal compressor is elaborated.
At first, the ac power supply of power end 220V is supplied with the above-mentioned trigger triode Tr1 that is used to control electric current, when above-mentioned trigger triode Tr1 power supply, the electric power that provides to above-mentioned reciprocal compressor 100 by the above-mentioned ac power supply of triggering (trigger) SC sigmal control to door G1 input.
So, can change stroke (displacement) by the motor of above-mentioned reciprocal compressor 100, therefore can change compression ratio.
At this moment, above-mentioned capacitor C works the buffer function of dwindling inductor (inductor) the L resistance components that constitutes above-mentioned reciprocal compressor 100.
The reciprocal compressor that can change compression ratio with said structure is widely used in air-conditioning and refrigerator rise control cold energy power.
If the gate control signal that applies to the door G1 of the above-mentioned trigger triode Tr1 that is used to control electric current is a high-end trim, then can make the above-mentioned trigger triode Tr1 conducting that is used to control electric current.So electric current flows into to above-mentioned reciprocal compressor 100, along with the inflow of electric current makes above-mentioned reciprocal compressor 100 drive the change stroke.
At this moment, in above-mentioned current detecting part 200, detect the electric current that flow into above-mentioned reciprocal compressor 100, the current value after detecting is offered above-mentioned microcomputer 300.
So, working in order to make above-mentioned reciprocal compressor 100, above-mentioned microcomputer calculates 300 to the above-mentioned control device 400 output control signals that discharge and recharge, and above-mentioned control signal is charged the above-mentioned capacitor C that is attached at above-mentioned reciprocal compressor 100 rear ends.Receive the above-mentioned gate control signal that discharges and recharges the gate signal generating unit 500 of control device 400 to the door G2 of the trigger triode Tr2 that is used to discharge and recharge output low-end trim of above-mentioned control signal, turn-off the above-mentioned trigger triode Tr2 that is used to discharge and recharge above-mentioned capacitor C is charged.
In addition, if the gate control signal that applies to the door G1 of the above-mentioned trigger triode Tr1 that is used to control electric current is a low-end trim, the above-mentioned trigger triode Tr1 that is used to control electric current is turned off electric current can not be flowed into to above-mentioned reciprocal compressor 100.
At this moment, detecting the electric current that flow into above-mentioned reciprocal compressor 100 in above-mentioned current detecting part 200 is zero, that is to say, provides null value to above-mentioned microcomputer 300.
So, continuing to drive in order to stop above-mentioned reciprocal compressor 100, above-mentioned microcomputer 300 is to the above-mentioned control device 400 output control signals that discharge and recharge, and above-mentioned control signal is discharged the above-mentioned capacitor C that is attached at above-mentioned reciprocal compressor 100 rear ends.
Receive the above-mentioned gate control signal that discharges and recharges the gate signal generating unit 500 of control device 400 to the door G2 of the above-mentioned trigger triode Tr2 that is used to discharge and recharge output high-end trim of above-mentioned control signal, the above-mentioned trigger triode Tr2 that conducting is used to discharge and recharge.
So above-mentioned capacitor C is discharged.
The reverse power that produces when driving by above-mentioned reciprocal compressor 100, make the voltage on the above-mentioned trigger triode Tr1 very high, particularly, when turning round, low temperature can produce the high voltage of damaging electronic component, so need to use the trigger triode Tr1 of high voltage bearing high price.
Summary of the invention
In order to overcome the above-mentioned shortcoming that prior art exists, the invention provides a kind of reciprocal compressor low load operation device, the high voltage that produces because of the reverse power of compressor when reducing low load operation, thus the trigger triode that prevents to be used to control electric current is damaged.
The technical solution adopted for the present invention to solve the technical problems is:
Electric capacity of the present invention is set directly between reciprocal compressor and the power supply; Also be provided with the switch in parallel in the described rotating device with electric capacity, and external temperature sensor; Microcomputer is by external temperature sensor perception external temperature and according to controlling the break-make of described switch with the comparative result of setting temperature; When external temperature is lower than setting temperature, the described switch conduction in parallel with electric capacity, compressor and power supply polyphone, the voltage on the trigger triode descends; When external temperature was higher than setting temperature, the described switch in parallel with electric capacity disconnected, and cut off the power supply with the compressor polyphone.
Low load operation method among the present invention comprises to be judged and two steps of switch control, promptly after reciprocal compressor starts, judges that at first external temperature is higher than set point of temperature or is lower than set point of temperature; If external temperature is higher than set point of temperature, then disconnect above-mentioned switch; If external temperature is lower than set point of temperature, the above-mentioned switch of conducting then.
Based on above rotating device and method, the high voltage of the trigger triode that low temperature when running cause because of the reverse power of compressor is reduced, thereby prevent that effectively trigger triode is damaged.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the block diagram of the rotating device of general reciprocal compressor.
Fig. 2 is the block diagram of reciprocal compressor low load operation device of the present invention.
Embodiment
Fig. 2 is the circuit block diagram of reciprocal compressor low load operation device of the present invention.
As shown in Figure 2, the present invention returns campaign-styled compressor low load operation device and includes following structure: trigger triode Tr1, reciprocal compressor 100, capacitor C, discharge and recharge adjusting portion 400, switch SW 1, current detecting part 400 and microcomputer 300.When commonly used ac power supply was provided, the above-mentioned trigger triode Tr1 that is used to control electric current was switched on or is turned off according to the trigger signal of input, so that electric current flows into to reciprocal compressor 100; Above-mentioned reciprocal compressor 100 changes stroke (displacement) by motor and regulates refrigerating capacity; Above-mentioned capacitor C works the buffer function of the resistance components of dwindling above-mentioned reciprocal compressor 100; Above-mentioned charging, the discharge that discharges and recharges the above-mentioned electric capacity of control device 400 adjusting in parallel with above-mentioned capacitor C; Above-mentioned switch SW 1 is in parallel with above-mentioned capacitor C, and by the control signal of microcomputer 300, above-mentioned switch SW 1 is switched on or is disconnected so that the voltage of controlling on the above-mentioned trigger triode Tr1 of electric current descends; Above-mentioned current detecting part 200 detects the electric current that flows into to reciprocal compressor 100 from the above-mentioned trigger triode Tr1 of control electric current; Above-mentioned microcomputer 300 is according to the above-mentioned adjusting portion 400 that discharges and recharges of current detection signal control of the above-mentioned current detecting part 200 of input, and by temperature transducer S1 perception external temperature, according to comparing the on/off of controlling above-mentioned switch SW 1 with the temperature of having set.
Fig. 3 is the workflow diagram of reciprocal compressor low load operation method of the present invention.
As shown in Figure 3, reciprocal compressor low load operation method of the present invention had as the next stage: after starting reciprocal compressor, judge whether external temperature is lower than set point of temperature; Above-mentioned judged result, if external temperature than set point of temperature height, then cut-off switch cuts off the power supply connect with reciprocal compressor; Above-mentioned judged result, if external temperature is lower than set point of temperature, then actuating switch series connection reciprocal compressor and power supply.
Below, the driving of reciprocal compressor of the present invention is elaborated.
The driving that the present invention is general is identical with prior art.That is to say, at first the ac power supply of power end 220V is supplied to the above-mentioned trigger triode Tr1 of control electric current, when the above-mentioned trigger triode Tr1 power supply of control electric current, the electric power that provides to reciprocal compressor 100 by the above-mentioned ac power supply of triggering (trigger) SC sigmal control to door G1 input.
So, can change stroke (displacement) by the motor of above-mentioned reciprocal compressor 100, therefore can change compression ratio.
At this moment, above-mentioned capacitor C works the buffer function of dwindling inductor (inductor) the L resistance components that constitutes above-mentioned reciprocal compressor 100.
The reciprocal compressor that can change compression ratio with said structure is widely used in air-conditioning and refrigerator rise control cold energy power.
In the present invention, above-mentioned microcomputer 300 is by temperature transducer S1 perception external temperature, if when the external temperature of perception is high than the temperature of having set, the disconnection control signal of exporting (OFF) inputed to above-mentioned switch SW 1.
So according to the disconnection control signal (OFF) of above-mentioned microcomputer 300, above-mentioned switch SW 1 is turned off and cuts off the power supply of connecting with above-mentioned reciprocal compressor 100.
On the other hand, if when the external temperature by said temperature sensor S1 perception is lower than the temperature of having set, conducting control signal (ON) is inputed to above-mentioned switch SW 1.So above-mentioned switch SW 1 is switched on and connect above-mentioned reciprocable machine 100 and power supply, make through the high voltage on the above-mentioned trigger triode Tr1 of control electric current to descend.
Claims (1)
1, a kind of reciprocal compressor low load operation device comprises the trigger triode that is used to control to the reciprocal compressor energising, can change the reciprocal compressor of stroke, the electric capacity that can reduce the reciprocal compressor resistance components and microcomputer by motor; It is characterized in that:
Electric capacity is set directly between reciprocal compressor and the power supply;
Also be provided with the switch in parallel in the described rotating device with electric capacity, and external temperature sensor;
Microcomputer is by external temperature sensor perception external temperature and according to controlling the break-make of described switch with the comparative result of setting temperature;
When external temperature is lower than setting temperature, the described switch conduction in parallel with electric capacity, compressor and power supply polyphone, the voltage on the trigger triode descends; When external temperature was higher than setting temperature, the described switch in parallel with electric capacity disconnected, and cut off the power supply with the compressor polyphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117316 CN1292170C (en) | 2002-05-17 | 2002-05-17 | Low load operation device and method for reciprocating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117316 CN1292170C (en) | 2002-05-17 | 2002-05-17 | Low load operation device and method for reciprocating compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1458414A CN1458414A (en) | 2003-11-26 |
| CN1292170C true CN1292170C (en) | 2006-12-27 |
Family
ID=29426526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02117316 Expired - Fee Related CN1292170C (en) | 2002-05-17 | 2002-05-17 | Low load operation device and method for reciprocating compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1292170C (en) |
-
2002
- 2002-05-17 CN CN 02117316 patent/CN1292170C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1458414A (en) | 2003-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1193502C (en) | Frequency control of linear motor | |
| US8197220B2 (en) | Driving control apparatus and method for linear compressor | |
| CN1229907C (en) | Apparatus for controlling driving linear motor and method thereof | |
| US8100668B2 (en) | Apparatus and method for controlling operation of a linear compressor using a detected inflection point | |
| US7408310B2 (en) | Apparatus for controlling driving of reciprocating compressor and method thereof | |
| US7405529B2 (en) | System and method for controlling linear compressor | |
| US6289680B1 (en) | Apparatus for controlling linear compressor and method thereof | |
| US8277199B2 (en) | Apparatus and method for controlling operation of linear compressor | |
| EP1473179A2 (en) | Driver of electric compressor | |
| CN1573107A (en) | Apparatus and method for controlling operation of a reciprocating compressor | |
| US20060228221A1 (en) | Apparatus for controlling operation of compressors | |
| WO2007049876A1 (en) | Driving controlling apparatus for linear compressor and method thereof | |
| CN1580555A (en) | Apparatus for controlling operation of reciprocating compressor | |
| CN101361262A (en) | Driving control apparatus and method for reciprocating compressor | |
| CN1615404A (en) | Device and method for overload protection of compressor | |
| CN1421332A (en) | Air conditioner apparatus | |
| KR100451224B1 (en) | Drive control method for reciprocating compressor | |
| CN1292170C (en) | Low load operation device and method for reciprocating compressor | |
| US7352142B2 (en) | Apparatus and method for controlling stroke of reciprocating compressor | |
| CN1729609A (en) | Method for controlling operation of compressor and apparatus thereof | |
| CN1878958A (en) | Driving controlling device of linear compressor and method thereof | |
| CN1704590A (en) | Apparatus for controlling operation of compressor and method therefor | |
| KR100394244B1 (en) | Low load driving apparatus and method for linear compressor | |
| KR100382920B1 (en) | Driving control apparatus for linear compressor | |
| KR100374842B1 (en) | Driving control method of refrigerator using reciprocating compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061227 |