CN100406816C - Inverter-driven compressor warm-up operating method and apparatus - Google Patents
Inverter-driven compressor warm-up operating method and apparatus Download PDFInfo
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- CN100406816C CN100406816C CN2005800111272A CN200580011127A CN100406816C CN 100406816 C CN100406816 C CN 100406816C CN 2005800111272 A CN2005800111272 A CN 2005800111272A CN 200580011127 A CN200580011127 A CN 200580011127A CN 100406816 C CN100406816 C CN 100406816C
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Abstract
To reduce the leakage current in a case of energizing a compressor driving motor with the compressor unactivated. The charier frequency of an inverter is set to a lower value than one during normal operation, thereby open-phase energizing the motor.
Description
Technical field
The present invention relates to a kind of warming up method and device thereof that is used to make the intensification of frequency conversion drive compressor.
Background technology
Well-known all the time, when compressor when starting, can dissolve in a large amount of liquid refrigerants in the lubricating oil under the state of cooling, make that lubricating oil is diluted and cause the compressor breakage.
In order to prevent the compressor breakage a kind of technology is proposed: detect the voltage and the electric current that are applied on the compressor, calculate the resistance of the motor winding of compressor according to this value, utilize the temperature characterisitic of resistance to calculate the Current Temperatures of compressor, reach set point of temperature when following at Current Temperatures, carry out the preheating (with reference to Japanese patent laid-open 5-288411 communique) of compressor.
In addition, a kind of technology is proposed: when atmospheric temperature below compressor might be immersed in first design temperature in the cold-producing medium and the radiator temperature of usefulness such as frequency converter can infer second design temperature that frequency converter do not drive when following, driven compressor is carried out stall energising (opening energising mutually) (opening the 2000-292014 communique with reference to the Japan Patent spy) with the winding of motor.
Disclosure of the Invention
Invent technical problem to be solved
The pre-thermal recovery direct current preheating of compressor in patent documentation 1.The pre-thermal recovery stall energising (opening energising mutually) of compressor in patent documentation 2.
But therefore the situation of the carrier frequency of record change frequency converter fully, adopts carrier frequency identical when turning round usually.And, carrier frequency is considered and can be produced noise etc. and set quite highly, therefore, carrying out the direct current preheating or driven compressor is being carried out stall when energising with motor with motor by driven compressor, be immersed in state in the liquid refrigerant if be in driven compressor with motor, then will inevitably cause leakage current significantly to increase, produce the undesirable condition that automatic leakage circuit breaker moves.
In view of the above problems, the object of the present invention is to provide a kind of warming up method and device thereof that can reduce the frequency conversion drive compressor of leakage current when driven compressor is immersed in situation in the lubricating oil with motor under, under the state that does not make compressor action, driven compressor being switched on motor.
The technical scheme that is used for the technical solution problem
The warming up method of frequency conversion drive compressor of the present invention, this frequency conversion drive compressor has the motor from the output power of frequency converter to move as drive source supply, cold-producing medium is compressed the back in the circulation stream, discharges, this warming up method be under the state that does not make compressor action with than common running the time low carrier frequency make the frequency converter action, to the method for motor energising.
At this moment, owing under the state that does not make compressor action motor is switched on, therefore, even liquid refrigerant dissolves in the lubricating oil, also the possibility of breakage-proof in advance heats up compressor, and the cold-producing medium that dissolves in the lubricating oil is gasified.In addition, even under motor is immersed in state in the lubricating oil,,, can suppress the generation that automatic leakage circuit breaker carries out this undesirable condition of misoperation so also can reduce leakage current owing to reduce carrier frequency.
Low carrier frequency can be the low carrier frequency of carrier frequency when producing refrigeration or heating rated capacity during than common running, also can be the low carrier frequency of carrier frequency during than 1/2 ability that produces refrigeration or heating rated capacity, can also be the highest carrier frequency low carrier frequency of ratio piston compressor rotating speed between 10rps～120rps the time.
The warming up device of frequency conversion drive compressor of the present invention, this frequency conversion drive compressor has the motor from the output power of frequency converter to move as drive source supply, cold-producing medium is compressed the back discharges in the circulation stream, this warming up device has the energising control member, this energising control member under the state that does not make compressor action with than common running the time low carrier frequency make the frequency converter action, switch on to motor.
At this moment, owing under the state that does not make compressor action motor is switched on, therefore, even liquid refrigerant dissolves in the lubricating oil, also the possibility of breakage-proof in advance heats up compressor, and the cold-producing medium that dissolves in the lubricating oil is gasified.In addition, even under motor is immersed in state in the lubricating oil,,, can suppress the generation that automatic leakage circuit breaker carries out this undesirable condition of misoperation so also can reduce leakage current owing to reduce carrier frequency.
Low carrier frequency can be the low carrier frequency of carrier frequency when producing refrigeration or heating rated capacity during than common running, also can be the low carrier frequency of carrier frequency during than 1/2 ability that produces refrigeration or heating rated capacity, can also be the highest carrier frequency low carrier frequency of ratio piston compressor rotating speed between 10rps～120rps the time.
The invention effect
Even under motor is immersed in state in the lubricating oil, also can reduce leakage current, can suppress the generation that automatic leakage circuit breaker carries out this undesirable condition of misoperation.
Description of drawings
Fig. 1 is the general block diagram of formation of major part of the air conditioner outdoor unit of expression immersion detection method, the starting method of having used frequency conversion drive compressor of the present invention.
Fig. 2 is a block diagram of representing the formation of compressor control portion in detail.
Fig. 3 is the longitudinal sectional view of the formation of expression compressor.
Fig. 4 is the flow chart of an example of the The pre-heat treatment of explanation frequency conversion drive compressor.
Fig. 5 is the figure of an example of expression leakage current-carrier frequency characteristics.
The specific embodiment
With reference to the accompanying drawings the warming up method of frequency conversion drive compressor of the present invention and the embodiment of device thereof are elaborated.
Fig. 1 is the general block diagram of formation of major part of the air conditioner outdoor unit of the expression warming up method of having used frequency conversion drive compressor of the present invention.
This air conditioner outdoor unit comprises: be the compressor 1 of drive source with motor 11; And serve as that input is carried out supplying with the compressor control portion 3 that drives electric power to motor 11 after the predetermined processing with AC power (preferred triple-phase AC power) 2.
Described motor 11 can adopt various structures such as three-phase synchronous motor.
As shown in Figure 2, described compressor control portion 3 comprises: with AC power 2 is the dc sources such as transverter 31 of input; Three phase converter 32 serves as the switching motion that input is stipulated with dc source 31, thereby the output three-phase ac power is supplied with to motor 11 as driving electric power; Be connected the resistance 33 between dc source 31 and the three phase converter 32; And microcomputer 34, with from the voltage of dc source 31 output and to use resistance 33 detected electric currents serve as that predetermined processing (for example judge open running mutually or turn round usually etc.) is carried out in input, to each transistor output control signal (frequency conversion switching signal) of three phase converter 32.
For example shown in Figure 3, described compressor 1 has compression mechanical part 12 and as the motor 11 of drive source in the inside of the compressor case 13 with refrigerant discharge leader 14 and refrigerant suction pipe 15.In addition, the 16th, be used for terminals to motor 11 power supplies.
Fig. 4 is the flow chart of an example of the The pre-heat treatment of explanation frequency conversion drive compressor.
In step SP1, when compressor operation, the first carrier frequency the when carrier frequency of frequency converter is set at common running.Then, in step SP2,, then in step SP3, the carrier frequency of frequency converter is set at second carrier frequency lower than first carrier frequency, and energising makes compressor preheating by opening mutually if compressor shuts down.Then, if the starting order of input compressor, then starting compressor in step SP4.
At this, the preheating of compressor is finished can be by temperature detection, open the time detecting of switching on mutually etc. detects.
Therefore, if carry out the processing of flow chart shown in Figure 4, then before compressor start, must carry out preheating, so can after compressor heats up, start by opening energising mutually.
And, in the embodiment of Fig. 4, in the processing to the motor energising under rotation status not, carrier frequency when the carrier frequency of the frequency converter that driven compressor portion 3 had is set than common running is low, therefore, as shown in Figure 5, leakage current can be reduced, the undesirable condition that automatic leakage circuit breaker moves during carrying out under the rotation status not the processing of motor energising can be prevented.
Particularly, preferably be set in below about 300Hz, thereby the electric leakage benchmark that can realize the security appliance method is the following leakage current of 1mA.
In the above description, also the processing of flow chart shown in Figure 4 can be when connecting the power supply of off-premises station, carried out, but when turning round usually, also the processing of flow chart shown in Figure 4 can be when receiving the compressor operation instruction, carried out.
Claims (8)
1. the warming up method of a frequency conversion drive compressor, this frequency conversion drive compressor (1) has the motor (11) from the output power of frequency converter to move as drive source supply, and cold-producing medium is compressed the back in the circulation stream, discharge,
This warming up method is characterised in that, low carrier frequency makes the frequency converter action with than common running the time under the state that does not make compressor (1) action, switches on to motor (11).
2. the warming up method of frequency conversion drive compressor as claimed in claim 1 is characterized in that, low carrier frequency is the low carrier frequency of carrier frequency when producing refrigeration or heating rated capacity during than common running.
3. the warming up method of frequency conversion drive compressor as claimed in claim 1 is characterized in that, low carrier frequency is the low carrier frequency of carrier frequency during than 1/2 ability that produces refrigeration or heating rated capacity during than common running.
4. the warming up method of frequency conversion drive compressor as claimed in claim 1 is characterized in that, low carrier frequency is the highest carrier frequency low carrier frequency of ratio piston compressor rotating speed between 10rps～120rps the time during than common running.
5. the warming up device of a frequency conversion drive compressor, this frequency conversion drive compressor (1) has the motor (11) from the output power of frequency converter to move as drive source supply, and cold-producing medium is compressed the back in the circulation stream, discharge,
This warming up device is characterised in that to have the energising control member, this energising control member under not making the state of compressor (1) action with than common running the time low carrier frequency make the frequency converter action, switch on to motor (11).
6. the warming up device of frequency conversion drive compressor as claimed in claim 5 is characterized in that, low carrier frequency is the low carrier frequency of carrier frequency when producing refrigeration or heating rated capacity during than common running.
7. the warming up device of frequency conversion drive compressor as claimed in claim 5 is characterized in that, low carrier frequency is the low carrier frequency of carrier frequency during than 1/2 ability that produces refrigeration or heating rated capacity during than common running.
8. the warming up device of frequency conversion drive compressor as claimed in claim 5 is characterized in that, low carrier frequency is the highest carrier frequency low carrier frequency of ratio piston compressor rotating speed between 10rps～120rps the time during than common running.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP129729/2004 | 2004-04-26 | ||
| JP2004129729 | 2004-04-26 | ||
| JP064939/2005 | 2005-03-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1942722A CN1942722A (en) | 2007-04-04 |
| CN100406816C true CN100406816C (en) | 2008-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800111272A Active CN100406816C (en) | 2004-04-26 | 2005-04-22 | Inverter-driven compressor warm-up operating method and apparatus |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5850116B1 (en) * | 2014-09-26 | 2016-02-03 | ダイキン工業株式会社 | Power converter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62258964A (en) * | 1986-04-23 | 1987-11-11 | ダイキン工業株式会社 | Refrigerator |
| JPH02264171A (en) * | 1990-03-08 | 1990-10-26 | Matsushita Electric Ind Co Ltd | Operation control device for air conditioner |
| CN1395071A (en) * | 2001-07-02 | 2003-02-05 | 卡利尔公司 | Cooler system with variable speed driver |
| CN1448669A (en) * | 2002-03-29 | 2003-10-15 | 日立空调系统株式会社 | Refrigerating apparatus and an inverter device used therein |
-
2005
- 2005-04-22 CN CN2005800111272A patent/CN100406816C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62258964A (en) * | 1986-04-23 | 1987-11-11 | ダイキン工業株式会社 | Refrigerator |
| JPH02264171A (en) * | 1990-03-08 | 1990-10-26 | Matsushita Electric Ind Co Ltd | Operation control device for air conditioner |
| CN1395071A (en) * | 2001-07-02 | 2003-02-05 | 卡利尔公司 | Cooler system with variable speed driver |
| CN1448669A (en) * | 2002-03-29 | 2003-10-15 | 日立空调系统株式会社 | Refrigerating apparatus and an inverter device used therein |
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| Publication number | Publication date |
|---|---|
| CN1942722A (en) | 2007-04-04 |
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