CN106762586B - Overtemperature protection control circuit, frequency-changeable compressor system and the refrigerator of frequency-changeable compressor - Google Patents
Overtemperature protection control circuit, frequency-changeable compressor system and the refrigerator of frequency-changeable compressor Download PDFInfo
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- CN106762586B CN106762586B CN201710003234.5A CN201710003234A CN106762586B CN 106762586 B CN106762586 B CN 106762586B CN 201710003234 A CN201710003234 A CN 201710003234A CN 106762586 B CN106762586 B CN 106762586B
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- Prior art keywords
- frequency
- changeable compressor
- circuit
- temperature protector
- drive control
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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
- 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
- F04B49/06—Control using electricity
Abstract
The invention discloses a kind of overtemperature protection control circuit of frequency-changeable compressor, frequency-changeable compressor system and refrigerator, wherein, the overtemperature protection control circuit of the frequency-changeable compressor includes：Temperature protector, temperature protector correspond to frequency-changeable compressor setting, and temperature protector is off when the temperature of frequency-changeable compressor is more than the first predetermined threshold value；Protection signal detects circuit, and protection signal detection circuit is used to export detection signal according to the conducting state or off-state of temperature protector；Drive control module, drive control module is used to receive detection signal, and frequency-changeable compressor is controlled according to detection signal.According to the overtemperature protection control circuit of the present invention; it is simple in construction; reliability is high; the overtemperature protection to frequency-changeable compressor can be effectively realized; and the impact for forcing power-off to carry out the device bands such as frequency-variable controller and frequency-changeable compressor can be effectively prevented from; the service life of device is extended, and does not easily cause electromagnetic interference.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, the overtemperature protection control circuit of more particularly to a kind of frequency-changeable compressor,
A kind of frequency-changeable compressor system and a kind of refrigerator.
Background technology
With new《Household electric refrigerator power consumption limit value and efficiency grade》The implementation of mandatory efficiency national standard, by
There is obvious advantage in terms of product energy-conservation in converter technique, the accounting of frequency conversion household refrigerator-freezer will be significantly increased.In protection machine
The aspect of system, current frequency conversion household refrigerator-freezer product mainly have two ways, and a kind of is the software protection of frequency-variable controller, i.e.,
Logical software can realize the protection of over-pressed, under-voltage, excessively stream, phase shortage, step-out etc., be compressed in supply voltage exception or frequency conversion
During the operation exceptions such as machine stall, overload, frequency-variable controller is shut down by software protection frequency-changeable compressor, another kind be
On the basis of above-mentioned software protection, in AC circuit end one overload protective device of series connection of frequency-variable controller, compressed in frequency conversion
Overload protective device acts when machine excessively stream or excess temperature, cuts off the power supply of frequency-variable controller, while frequency-changeable compressor is shut down.
But first way does not have the over-temperature protection of frequency-changeable compressor, occur overheating etc. in frequency-changeable compressor abnormal
During situation, without effectively safeguard measure.The second way is because overload protective device is connected in AC circuit end, if mistake
Protector generation action is carried, then forcibly can be powered off to frequency-variable controller and frequency-changeable compressor, so can be to a certain extent
Frequency-variable controller and frequency-changeable compressor are impacted, and influence the life-span of product, simultaneously as household refrigerator-freezer wire harness assembles
The limitation of technique, power line are needed with frequency-changeable compressor triple line together cabling, in this case, power line easily by
The electromagnetic interference of frequency-changeable compressor triple line, and then have influence on EMC (the Electro Magnetic of complete machine
Compatibility, electromagnetic compatibility) test effect.
At present, the frequency conversion household refrigerator-freezer product over-temperature protection urgently to be resolved hurrily that can realize frequency-changeable compressor, and can
The impact for forcing power-off to frequency-variable controller and frequency-changeable compressor is avoided, and not the electromagnetic interference band of frequency-changeable compressor triple line
The problem of entering power line.
The content of the invention
It is contemplated that at least solves one of technical problem in above-mentioned technology to a certain extent.Therefore, the present invention
One purpose is the overtemperature protection control circuit for proposing a kind of frequency-changeable compressor, and the circuit structure is simple, and reliability is high, can
The overtemperature protection to frequency-changeable compressor is effectively realized, and can be effectively prevented from forcing power-off to frequency-variable controller and frequency conversion pressure
The impact that the device bands such as contracting machine are come, extends the service life of device, and do not easily cause electromagnetic interference.
Second object of the present invention is to propose a kind of frequency-changeable compressor system.
Third object of the present invention is to propose a kind of refrigerator.
To reach above-mentioned purpose, first aspect present invention embodiment proposes a kind of overtemperature protection control of frequency-changeable compressor
Circuit, including：Temperature protector, the temperature protector correspond to the frequency-changeable compressor and set, and the temperature protector is in institute
State when the temperature of frequency-changeable compressor is more than the first predetermined threshold value and be off；Protection signal detects circuit, the protection letter
Number detection circuit be used for according to the conducting state or off-state of the temperature protector export detection signal；Drive control mould
Block, the drive control module is used to receive the detection signal, and the frequency-changeable compressor is entered according to the detection signal
Row control.
The overtemperature protection control circuit of frequency-changeable compressor according to embodiments of the present invention, circuit root is detected by protection signal
Detection signal is exported according to the conducting state or off-state of temperature protector, detection signal is received by drive control module, and
Frequency-changeable compressor is controlled according to detection signal.The circuit structure is simple, and reliability is high, can effectively realize to frequency conversion
The overtemperature protection of compressor, and can be effectively prevented from forcing what power-off carried out the device bands such as frequency-variable controller and frequency-changeable compressor
Impact, extends the service life of device, and do not easily cause electromagnetic interference.
In addition, the overtemperature protection control circuit of the frequency-changeable compressor proposed according to the above embodiment of the present invention can also have
Additional technical characteristic as follows：
According to one embodiment of present invention, the protection signal detection circuit is in the temperature protector disconnects shape
High level signal is exported during state, and low level signal is exported when the temperature protector is in the conduction state.
According to one embodiment of present invention, the drive control module is when receiving the high level signal, control
The frequency-changeable compressor is shut down；The drive control module controls the frequency conversion to compress when receiving the low level signal
Machine keeps normal operating condition.
According to one embodiment of present invention, the protection signal detection circuit includes：First resistor, the first resistor
One end be connected to the first dc source；First electric capacity, one end of first electric capacity and the other end phase of the first resistor
Even, there is first node, the first node connection between one end of first electric capacity and the other end of the first resistor
To the control signal output of protection signal detection circuit, the other end ground connection of first electric capacity；Second resistance, it is described
One end of second resistance is connected with the first node；Connector, the first terminal of the connector and the second resistance
The other end is connected, the Second terminal of connector ground connection, and the connector by the protection signal detecting circuit and institute
Temperature protector is stated to be connected, wherein, when protection signal detection circuit is connected with the temperature protector, the temperature
One end of degree protector is connected with the other end of the second resistance, the other end ground connection of the temperature protector.
According to one embodiment of present invention, the protection signal detection circuit and the drive control module are integrally disposed
In the frequency-variable controller of the frequency-changeable compressor.
According to one embodiment of present invention, the drive control module includes drive control chip and drive control electricity
Road.
To reach above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of frequency-changeable compressor system, and it includes
The overtemperature protection control circuit for the frequency-changeable compressor stated.
Frequency-changeable compressor system according to embodiments of the present invention, pass through the overtemperature protection control with above-mentioned frequency-changeable compressor
Circuit processed, simple in construction, reliability is high, can effectively realize the overtemperature protection to frequency-changeable compressor, and can effectively keep away
Exempt from the impact for forcing power-off to carry out the device bands such as frequency-variable controller and frequency-changeable compressor, extend the service life of device, and not
Easily cause electromagnetic interference.
To reach above-mentioned purpose, third aspect present invention embodiment proposes a kind of refrigerator, and it includes above-mentioned frequency conversion pressure
Contracting machine system.
Refrigerator according to embodiments of the present invention, by using above-mentioned frequency-changeable compressor system, simple in construction, reliability
Height, the overtemperature protection to frequency-changeable compressor can be effectively realized, and can be effectively prevented from forcing power-off to frequency-variable controller
The impact come with device bands such as frequency-changeable compressors, extends the service life of device, and do not easily cause electromagnetic interference.
In addition, the refrigerator proposed according to the above embodiment of the present invention can also have technical characteristic additional as follows：
According to one embodiment of present invention, the refrigerator is frequency conversion household refrigerator-freezer.
Brief description of the drawings
Fig. 1 is the block diagram of the overtemperature protection control circuit of frequency-changeable compressor according to embodiments of the present invention；
Fig. 2 is the structural representation of the overtemperature protection control circuit of frequency-changeable compressor according to an embodiment of the invention；
Fig. 3 is the structural representation of the overtemperature protection control circuit of frequency-changeable compressor in accordance with another embodiment of the present invention
Figure；
Fig. 4 is the circuit diagram of temperature protector according to an embodiment of the invention and protection signal detection circuit；
Fig. 5 is the block diagram of frequency-changeable compressor system according to embodiments of the present invention；And
Fig. 6 is the block diagram of refrigerator according to embodiments of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below in conjunction with the accompanying drawings come describe the overtemperature protection control circuit of the frequency-changeable compressor of the embodiment of the present invention, frequency conversion compression
Machine system and refrigerator.
Fig. 1 is the block diagram of the overtemperature protection control circuit of frequency-changeable compressor according to embodiments of the present invention.Such as Fig. 1
It is shown, the overtemperature protection control circuit of the frequency-changeable compressor of the embodiment of the present invention, including：Temperature protector 10, protection signal inspection
Slowdown monitoring circuit 20 and drive control module 30.
Wherein, temperature protector 10 can correspond to frequency-changeable compressor setting, temperature of the temperature protector 10 in frequency-changeable compressor
It is off during more than the first predetermined threshold value；Protection signal detection circuit 20 is used for the conducting shape according to temperature protector 10
State or off-state output detection signal；Drive control module 30 is used to receive detection signal, and according to detection signal to frequency conversion
Compressor 40 is controlled.
Specifically, the first predetermined threshold value can be demarcated according to actual conditions.Temperature protector 10 can be that thermostat is (a kind of
Temperature-sensing device), it can be mounted at the terminal cover of frequency-changeable compressor, be sealed in electrical appliance kit, so as to delicately sense
Go out the temperature of frequency-changeable compressor housing, while the influence of ambient temperature can be reduced.
In one embodiment of the invention, as shown in Fig. 2 protection signal detection circuit 20 and drive control module 30 can
It is integrally disposed in the frequency-variable controller 50 of frequency-changeable compressor 40.
In one embodiment of the invention, as shown in figure 3, drive control module 30 may include the He of drive control chip 31
Drive control circuit 32.
In one embodiment of the invention, protection signal detects circuit 20 when temperature protector 10 is off
High level signal is exported, and low level signal is exported when temperature protector 10 is in the conduction state.Wherein, drive control mould
Block 30 when receiving high level signal, shut down by control frequency-changeable compressor 40；Drive control module 30 is receiving low level letter
Number when, control frequency-changeable compressor 40 keep normal operating condition.
Specifically, after frequency-variable controller 50 being electrically accessed in city, drive control chip 31 is controlled by drive control circuit 32
Frequency-changeable compressor 40 is normally worked.When frequency-changeable compressor 40 is in abnormal operation, inside frequency-changeable compressor 40
The motor feels hot and transfers heat to the housing of frequency-changeable compressor, and the temperature of frequency-changeable compressor 40 is sensed by temperature protector 10
Degree, and when the temperature of frequency-changeable compressor 40 is more than the first predetermined threshold value, break-off signal protector 10.
Further, when temperature protector 10 is off, circuit 20 is detected by protection signal and exports high electricity
Ordinary mail number, drive control chip 31 control frequency-changeable compressor 40 after high level signal is received, by drive control circuit 32
Shut down.When temperature protector 10 is in the conduction state, circuit 20 is detected by protection signal and exports low level signal, driving control
Coremaking piece 31 controls frequency-changeable compressor 40 to keep normal operation shape after low level signal is received, by drive control circuit 32
State.
In one embodiment of the invention, as shown in figure 4, protection signal detection circuit 20 may include：First resistor R1,
First electric capacity C1, second resistance R2 and connector CON.Wherein, first resistor R1 one end is connected to the first dc source VCC.
First electric capacity C1 one end is connected with the first resistor R1 other end, the first electric capacity C1 one end and the first resistor R1 other end
Between there is the control signal output D that first node J1, first node J1 are connected to protection signal detection circuit 20, the first electricity
Hold C1 other end ground connection GND.Second resistance R2 one end is connected with first node J1.Connector CON the first terminal N1 with
The second resistance R2 other end is connected, and connector CON Second terminal N2 ground connection GND, connector CON is protection signal to be examined
Slowdown monitoring circuit 20 is connected with temperature protector 10, wherein, when protection signal detection circuit 20 is connected with temperature protector 10,
One end of temperature protector 10 is connected with the second resistance R2 other end, the other end ground connection GND of temperature protector 10.
Specifically, bleeder circuit can be formed by first resistor R1, second resistance R2 and temperature protector 10.Compressed in frequency conversion
When machine 40 is in normal operating conditions, contact closure inside temperature protector 10, change can be sensed by temperature protector 10
The temperature of the housing of frequency compressor 40.When exception occurs in frequency-changeable compressor 40, frequency-changeable compressor is sensed by temperature protector 10
When 40 temperature is more than the first predetermined threshold value, the contact inside temperature protector 10 disconnects, now, protection signal detection circuit 20
Control signal output D output high level signal, drive control chip 31 after high level signal is received, pass through drive control
Circuit 32 processed controls frequency-changeable compressor 40 to shut down.After frequency-changeable compressor 40 returns to normal operating temperature, due to frequency conversion pressure
The temperature of contracting machine 40 is reduced and scattered and disappeared, the contact closure inside temperature protector 10, and now, protection signal detects the control of circuit 20
Signal output part D processed exports low level signal, and drive control chip 31 passes through drive control electricity after low level signal is received
Road 32 controls frequency-changeable compressor 40 to keep normal operating condition.
In summary, the overtemperature protection control circuit of frequency-changeable compressor according to embodiments of the present invention, passes through protection signal
Detect circuit and detection signal is exported according to the conducting state or off-state of temperature protector, received and examined by drive control module
Signal is surveyed, and frequency-changeable compressor is controlled according to detection signal.The circuit structure is simple, and reliability is high, can be effectively
The overtemperature protection to frequency-changeable compressor is realized, and can be effectively prevented from forcing power-off to frequency-variable controller and frequency-changeable compressor etc.
The impact that device band is come, extends the service life of device, and do not easily cause electromagnetic interference.
Based on above-described embodiment, the present invention also proposes a kind of frequency-changeable compressor system 1000.
Fig. 5 is the block diagram of frequency-changeable compressor system according to embodiments of the present invention.As shown in figure 5, the present invention is real
Applying the frequency-changeable compressor 1000 of example may include the overtemperature protection control circuit 100 of above-mentioned frequency-changeable compressor.
It should be noted that the details not disclosed in the frequency-changeable compressor system 1000 of the embodiment of the present invention, refer to this
Details disclosed in the overtemperature protection control circuit 100 of the frequency-changeable compressor of inventive embodiments, specific I will not elaborate.
Frequency-changeable compressor system according to embodiments of the present invention, pass through the overtemperature protection control with above-mentioned frequency-changeable compressor
Circuit processed, simple in construction, reliability is high, can effectively realize the overtemperature protection to frequency-changeable compressor, and can effectively keep away
Exempt from the impact for forcing power-off to carry out the device bands such as frequency-variable controller and frequency-changeable compressor, extend the service life of device, and not
Easily cause electromagnetic interference.
Fig. 6 is the block diagram of refrigerator according to embodiments of the present invention.As shown in fig. 6, refrigerator 10000 is including above-mentioned
Frequency-changeable compressor system 1000, wherein, refrigerator 10000 can be frequency conversion household refrigerator-freezer.
It should be noted that the details not disclosed in the refrigerator 10000 of the embodiment of the present invention, refer to the embodiment of the present invention
Frequency-changeable compressor system 1000 disclosed in details, it is specific that I will not elaborate.
Refrigerator according to embodiments of the present invention, by using above-mentioned frequency-changeable compressor system, simple in construction, reliability
Height, the overtemperature protection to frequency-changeable compressor can be effectively realized, and can be effectively prevented from forcing power-off to frequency-variable controller
The impact come with device bands such as frequency-changeable compressors, extends the service life of device, and do not easily cause electromagnetic interference.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (8)
- A kind of 1. overtemperature protection control circuit of frequency-changeable compressor, it is characterised in that including：Temperature protector, the temperature protector correspond to the frequency-changeable compressor and set, and the temperature protector is in the frequency conversion The temperature of compressor is off when being more than the first predetermined threshold value；Protection signal detects circuit, and the protection signal detection circuit is used for the conducting state or disconnected according to the temperature protector Open state exports detection signal, wherein, the protection signal detection circuit is defeated when the temperature protector is off Go out high level signal, and low level signal is exported when the temperature protector is in the conduction state；Drive control module, the drive control module are used to receive the detection signal, and according to the detection signal to institute Frequency-changeable compressor is stated to be controlled.
- 2. the overtemperature protection control circuit of frequency-changeable compressor according to claim 1, it is characterised in that wherein,The drive control module controls the frequency-changeable compressor to shut down when receiving the high level signal；The drive control module controls the frequency-changeable compressor to keep normal operation shape when receiving the low level signal State.
- 3. the overtemperature protection control circuit of frequency-changeable compressor according to claim 1 or 2, it is characterised in that the protection Signal deteching circuit includes：First resistor, one end of the first resistor are connected to the first dc source；First electric capacity, one end of first electric capacity are connected with the other end of the first resistor, one end of first electric capacity There is first node between the other end of the first resistor, the first node is connected to the protection signal detection circuit Control signal output, first electric capacity the other end ground connection；Second resistance, one end of the second resistance are connected with the first node；Connector, the first terminal of the connector are connected with the other end of the second resistance, the second end of the connector Son ground connection, the connector are connected the protection signal is detected into circuit with the temperature protector, wherein, described When protection signal detection circuit is connected with the temperature protector, one end of the temperature protector and the second resistance The other end is connected, the other end ground connection of the temperature protector.
- 4. the overtemperature protection control circuit of frequency-changeable compressor according to claim 1 or 2, it is characterised in that the protection Signal deteching circuit and the drive control module are integrally disposed in the frequency-variable controller of the frequency-changeable compressor.
- 5. the overtemperature protection control circuit of frequency-changeable compressor according to claim 4, it is characterised in that the drive control Module includes drive control chip and drive control circuit.
- 6. a kind of frequency-changeable compressor system, it is characterised in that including the frequency-changeable compressor any one of claim 1-5 Overtemperature protection control circuit.
- 7. a kind of refrigerator, it is characterised in that including frequency-changeable compressor system according to claim 6.
- 8. refrigerator according to claim 7, it is characterised in that the refrigerator is frequency conversion household refrigerator-freezer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003234.5A CN106762586B (en) | 2017-01-03 | 2017-01-03 | Overtemperature protection control circuit, frequency-changeable compressor system and the refrigerator of frequency-changeable compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003234.5A CN106762586B (en) | 2017-01-03 | 2017-01-03 | Overtemperature protection control circuit, frequency-changeable compressor system and the refrigerator of frequency-changeable compressor |
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| Publication Number | Publication Date |
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| CN106762586A CN106762586A (en) | 2017-05-31 |
| CN106762586B true CN106762586B (en) | 2018-03-20 |
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| CN201710003234.5A Active CN106762586B (en) | 2017-01-03 | 2017-01-03 | Overtemperature protection control circuit, frequency-changeable compressor system and the refrigerator of frequency-changeable compressor |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873040A (en) * | 2018-08-30 | 2020-03-10 | 安徽美芝制冷设备有限公司 | Protection circuit and system of variable frequency compressor and refrigerator |
| CN110966836A (en) * | 2018-09-29 | 2020-04-07 | 安徽美芝制冷设备有限公司 | Refrigerator and compressor control system thereof |
| CN111059038A (en) * | 2018-10-16 | 2020-04-24 | 安徽美芝制冷设备有限公司 | Temperature protection device and method for compressor, compressor system and refrigeration equipment |
| CN110617606B (en) * | 2019-09-23 | 2021-09-21 | 芜湖美智空调设备有限公司 | Air conditioner and control method and system thereof |
| CN112564051B (en) * | 2020-11-30 | 2023-08-22 | 佛山市顺德区美的电子科技有限公司 | Overheat protection control method, overheat protection control device, overheat protection control circuit, motor controller and household appliance |
| CN114504252B (en) * | 2021-11-10 | 2023-08-29 | 深圳市阳邦电子有限公司 | Software protection method and system applied to oven over-temperature protection |
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| CN1384290A (en) * | 2001-03-27 | 2002-12-11 | 科普兰公司 | Compressor diagnosing system |
| CN105589376A (en) * | 2015-06-17 | 2016-05-18 | 青岛海信日立空调系统有限公司 | Alarm control method and device, and air-conditioning controller |
| CN106481538A (en) * | 2015-08-28 | 2017-03-08 | 艾默生环境优化技术(苏州)有限公司 | Compressor protection method, compressor, and air conditioning apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH02104995A (en) * | 1988-10-14 | 1990-04-17 | Hitachi Ltd | Protector for compressor |
| JP2004301039A (en) * | 2003-03-31 | 2004-10-28 | Mitsubishi Electric Corp | Compressor protecting device and compressor using the same |
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|---|---|---|---|---|
| CN1384290A (en) * | 2001-03-27 | 2002-12-11 | 科普兰公司 | Compressor diagnosing system |
| CN105589376A (en) * | 2015-06-17 | 2016-05-18 | 青岛海信日立空调系统有限公司 | Alarm control method and device, and air-conditioning controller |
| CN106481538A (en) * | 2015-08-28 | 2017-03-08 | 艾默生环境优化技术(苏州)有限公司 | Compressor protection method, compressor, and air conditioning apparatus |
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| CN106762586A (en) | 2017-05-31 |
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