CN109556231A - A kind of unit and its high voltage protective method - Google Patents
A kind of unit and its high voltage protective method Download PDFInfo
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- CN109556231A CN109556231A CN201811260032.XA CN201811260032A CN109556231A CN 109556231 A CN109556231 A CN 109556231A CN 201811260032 A CN201811260032 A CN 201811260032A CN 109556231 A CN109556231 A CN 109556231A
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- current value
- high voltage
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- voltage protective
- compressor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The present invention discloses a kind of unit and its high voltage protective method, method include: judge unit high voltage protective switch whether failure；If it is, the running current value of the compressor of detection unit；When running current value meets preset condition, start high voltage protective mode；Wherein, high voltage protective switch is located at the high-pressure output tube road of compressor.Thus; reduce the safety problem caused by high voltage protective switch fault; when running current value is greater than pre-set current value; start high voltage protective mode in time; avoid the operating pressure of unit excessively high and cause unit delivery temperature increase, power consumption increase and compressor consume situations such as; to improve unit reliability of operation, achieve the purpose that raising machine group parts service life.
Description
Technical field
The present invention relates to machine set technology fields, in particular to a kind of unit and its high voltage protective method.
Background technique
Currently, unit high-pressure output tube road be provided with high voltage protective switch, for detection system operation pressure value,
And judge whether system refrigerant leaks, whether system situations such as blocking occurs, goes out in system according to the size of the pressure value of operation
When existing failure, compressor emergency shutdown is controlled, and maintenance personal is prompted to carry out system maintenance, so that the normal operation for system provides guarantor
Barrier.If pressure-head switch breaks down, when unit blocks, can not shut down in time to protect unit,
Unit will nonserviceable lower operation, to influence the reliability and comfort of air-conditioning, or even will cause unit damage.
For in the related technology, when the high voltage protective switch of unit breaks down, how unit is fast and effeciently adjusted
Operating status, to protect unit.Currently no effective solution has been proposed.
Summary of the invention
The embodiment of the present invention provides a kind of unit and its high voltage protective method, can switch and occur in the high voltage protective of unit
When failure, the operating status of unit is adjusted, fast and effeciently to protect unit.
In a first aspect, the embodiment of the present invention provides a kind of high voltage protective method, which comprises
Judge the unit high voltage protective switch whether failure；
If it is, detecting the running current value of the compressor of the unit；
When the running current value meets preset condition, start high voltage protective mode；
Wherein, the high voltage protective switch is located at the high-pressure output tube road of the compressor.
Further, the preset condition are as follows: the running current value is greater than pre-set current value.
Further, the preset condition are as follows: the running current value is all larger than pre-set current value in preset duration.
Further, the pre-set current value is the current value determined according to system high pressure critical value；Wherein, the system
High pressure critical value is to trigger the minimum value of the system high pressure of high voltage protective mode when the high voltage protective switchs non-failure.
Further, when the running current value meets preset condition, starting high voltage protective mode includes:
When the running current value meets preset condition, it is out of service to control the unit.
Further, when the running current value meets preset condition, the method also includes:
Alert.
Second aspect, the embodiment of the present invention provide a kind of unit, and the unit is used to execute method described in first aspect,
The unit includes: current detector, compressor, master controller, high voltage protective switch, wherein the high voltage protective switchs position
In the compressor high-pressure output tube road,
The master controller is switched with the high voltage protective and is connected, for judge high voltage protective switch whether failure；
It is instructed if it is, being sent to the current detector；
The current detector, for after receiving described instruction, detecting the running current value of the compressor；To institute
It states master controller and feeds back the running current value；
The master controller, for controlling the unit starting high pressure when the running current value meets preset condition
Protected mode.
Further, the preset condition is that the running current value is greater than pre-set current value.
Further, the preset condition is that the running current value is all larger than pre-set current value in preset duration.
Further, the current detector is connect with the mains terminals of the compressor, alternatively,
The current detector is socketed in any one phase line of the alternating current inlet wire of the compressor.
Further, the current detector is current sensor.
Further, the unit is air conditioner.
Apply the technical scheme of the present invention, method include: judge unit high voltage protective switch whether failure；If so,
Then detect the running current value of the compressor of unit；When running current value meets preset condition, start high voltage protective mode；Its
In, high voltage protective switch is located at the high-pressure output tube road of compressor.Reduce as a result, and causes because of pressure-head switch failure
Safety problem, running current value be greater than pre-set current value when, high voltage protective mode can be started in time, avoid the fortune of unit
Situations such as row hypertonia causes unit delivery temperature to increase, power consumption increase and the consume of compressor, to improve unit
Reliability of operation achievees the purpose that raising machine group parts service life.
Detailed description of the invention
Fig. 1 is a kind of flow chart of high voltage protective method according to an embodiment of the present invention；
Fig. 2 is a kind of flow chart of high voltage protective method according to an embodiment of the present invention；
Fig. 3 is a kind of flow chart of high voltage protective method according to an embodiment of the present invention；
Fig. 4 is a kind of structural block diagram of unit according to an embodiment of the present invention；
Fig. 5 is a kind of structural block diagram of unit according to an embodiment of the present invention；
Fig. 6 is a kind of schematic diagram of the set-up mode of current detector according to an embodiment of the present invention.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, it should be understood that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
In subsequent description, it is only using the suffix for indicating such as " module ", " component " or " unit " of element
Be conducive to explanation of the invention, itself there is no a specific meaning.Therefore, " module ", " component " or " unit " can mix
Ground uses.
To solve not starting high voltage protective mode when the high voltage protective switch of unit breaks down, lead to influence machine
The problem of group reliability service, the embodiment of the present invention provides a kind of high voltage protective method, as shown in Figure 1, method includes:
Step S101, judge unit high voltage protective switch whether failure；
Step S102, if it is, the running current value of the compressor of detection unit；
Step S103, when running current value meets preset condition, start high voltage protective mode；
Wherein, high voltage protective switch is located at the high-pressure output tube road of compressor.
Reduce the safety problem caused by pressure-head switch failure as a result, is greater than default electricity in running current value
When flow valuve, high voltage protective mode can be started in time, avoid the operating pressure of unit is excessively high unit delivery temperature is caused to increase, function
Situations such as consumption increase and the consume of compressor, reaches the use of raising machine group parts to improve unit reliability of operation
The purpose in service life.
Wherein, unit can be air conditioner, and when the judgment result is no, can according to the current system pressure value of unit come
Determine whether to start high voltage protective mode.In one possible implementation, preset condition can be with are as follows: running current value is greater than
Pre-set current value.Pre-set current value can also be all larger than in preset duration for running current value.Preset duration can be by user's root
It is selected according to actual needs, when preset condition is that running current value is all larger than pre-set current value in preset duration, then may be used
So that definitive result is more accurate, avoids erroneous judgement and influence the normal operation of unit.And when preset condition is running current value
When greater than pre-set current value, then it can start in time high voltage protective mode, to further protect when unit has high pressure hidden danger
Unit.It should be noted that the running current value of detection compressor need to execute after the high voltage protective switch fault for determining unit,
If high voltage protective switchs non-failure, detection running current value is not needed, but can be according to unit prototype part, i.e. high voltage protective
Switch is to trigger high voltage protective mode.That is, detection running current value can be regarded as a kind of alternate ways.And it can be real-time
Detection running current value can also detect running current value at times, running current value can be periodically detected, can also between
Detect to having a rest property running current value.
In one possible implementation, pre-set current value is the current value determined according to system high pressure critical value；Its
In, system high pressure critical value is to trigger the minimum value of the system high pressure of high voltage protective mode when high voltage protective switchs non-failure.
Wherein, the running current value of compressor is bigger, then accordingly the system pressure value of condenser side is higher, air conditioner
Pressure in refrigerant pipeline is also bigger.Therefore, running current value has corresponding with the saturation pressure force value in unit refrigerant pipeline
Relationship.Similarly, pre-set current value and system high pressure critical value also have corresponding relationship.This hair can be realized using this corresponding relationship
Bright scheme.
In one possible implementation, can be known by testing running current value and saturation pressure force value data and
Its corresponding relationship.For the angle of virtual bench, unit can also include pre- memory cell, can prestore compressor running current value
With the corresponding relation data of saturation pressure force value.For example, pre-set current value and the corresponding relationship of system high pressure critical value are as follows
Shown in table 1.Wherein, running current value is indicated with W1, and system high pressure critical value is indicated with P1.
Table 1
| Operating condition | Running current value | High-pressure | Protected mode |
| Operating condition 1 | W1 | P1 | High voltage protective mode |
The meaning of table 1 is that, when running current value reaches pre-set current value W1, can start high voltage protective mode, current
System high pressure pressure value is P1, that is, predetermined system high pressure critical value.
As a result, in one possible implementation, by prestoring, compressor current value is corresponding with saturation pressure force value to be closed
It is table, corresponding saturation pressure force value P can be quickly determined after detecting compressor running current value, to improve saturation
The reasonability of pressure value improves the timeliness for judging high voltage protective switch working state.
In one possible implementation, as shown in Fig. 2, step S103, when running current value meets preset condition,
Starting high voltage protective mode includes:
Step S1031, when running current value meets preset condition, control unit is out of service.
As a result, can and shut down, to avoid unit operating pressure it is excessively high cause unit delivery temperature increase, power consumption increase,
And compressor consume situations such as, to improve unit reliability of operation, reach raising machine group parts service life
Purpose.
In one possible implementation, when running current value meets preset condition, method further include: issue alarm
Information, to prompt user to adjust the operating status of air conditioner.
Method shown in the present invention can pass through the fortune for judging compressor when high voltage protective switch breaks down in time
Whether row current value meets preset condition, to know the current pressure condition of unit, to reduce because of high voltage protective switch fault
And the safety problem caused, achieve the purpose that improve unit efficiency and improves compressor part service life.
Fig. 3 shows a kind of flow chart of high voltage protective method according to an embodiment of the present invention, as shown in figure 3, this method
Include:
Step S401, recording compressed machine running current；
Step S402, judge whether unit occurs high voltage protective switch fault, if so, thening follow the steps S403；If
It is no, then follow the steps S404；
Step S403, compressor running current is detected in predetermined period；Step S405 is executed afterwards；
Step S404, unit operates normally；
Step S405, judge whether current value is greater than preset value；If so, thening follow the steps S406；
Step S406, judge whether current value duration is greater than preset duration；If so, thening follow the steps S407；
Step S407；Confirm that high voltage protective occurs for unit, control unit is out of service.
Reduce the safety problem caused by pressure-head switch failure as a result, is greater than default electricity in running current value
When flow valuve, high voltage protective mode can be started in time, avoid the operating pressure of unit is excessively high unit delivery temperature is caused to increase, function
Situations such as consumption increase and the consume of compressor, reaches the use of raising machine group parts to improve unit reliability of operation
The purpose in service life.
Fig. 4 shows a kind of unit according to an embodiment of the present invention, and unit is for executing method described in first aspect, machine
Group includes: current detector 1, compressor 2, master controller 3, high voltage protective switch 4, wherein high voltage protective switch 4 is located at compression
The high-pressure output tube road of machine 2,
Master controller 3 is connect with high voltage protective switch 4, for judge high voltage protective switch 4 whether failure；If it is,
It sends and instructs to current detector 1；
Current detector 1, for upon receipt of the instructions, detecting the running current value of compressor 2；It is anti-to master controller 3
Present running current value；
Master controller 3, for controlling unit starting high voltage protective mode when running current value meets preset condition.
Wherein, current detector 1 can be current sensor, can be used for acquiring the running current of compressor, reflection compression
The start and stop state of machine, alternatively, the height of unit refrigeration piping pressure.
In one possible implementation, as shown in figure 5, current detector 1 is connect with the mains terminals of compressor 2.
And Fig. 5 shows the connection relationship of the remaining part of unit.Specifically: it is sequentially connected and constitutes the compressor 2, cold of link circuit
Condenser 5, electric expansion valve 6, evaporator 7, compressor 2.Water pump 9 is provided between condenser 5 and cooling tower 8.7 side of evaporator is set
It is equipped with blower motor component 10.
In one possible implementation, current detector 1 can also be socketed in any of the alternating current inlet wire of compressor
In one phase line, the electric current of alternating current inlet wire is detected.As shown in fig. 6, in the electric cabinet of unit complete machine, by 1 cloth of current detector
Set on the A.C. contactor of compressor, specific method can be with are as follows: the alternating-current switch of disjunction compressor, remove compressor exchange into
Line, an optional phase line is socketed upper current transformer (current transformer belongs to current detector 1, is equivalent to probe), by communication line
It is sent to the end of probe of current sensor 1, closes the alternating-current switch of compressor again.
Reduce the safety problem caused by pressure-head switch failure as a result, is greater than default electricity in running current value
When flow valuve, high voltage protective mode can be started in time, avoid the operating pressure of unit is excessively high unit delivery temperature is caused to increase, function
Situations such as consumption increase and the consume of compressor, reaches the use of raising machine group parts to improve unit reliability of operation
The purpose in service life.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a mobile terminal (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described above in conjunction with figure, but the invention is not limited to above-mentioned specific realities
Mode is applied, the above mentioned embodiment is only schematical, rather than restrictive, and those skilled in the art exist
Under enlightenment of the invention, without breaking away from the scope protected by the purposes and claims of the present invention, many shapes can be also made
Formula, all of these belong to the protection of the present invention.
Claims (14)
1. a kind of high voltage protective method, which is characterized in that the described method includes:
Judge unit high voltage protective switch whether failure；
If it is, detecting the running current value of the compressor of the unit；
When the running current value meets preset condition, start high voltage protective mode；
Wherein, the high voltage protective switch is located at the high-pressure output tube road of the compressor.
2. the method according to claim 1, wherein the preset condition are as follows: the running current value is greater than pre-
If current value.
3. the method according to claim 1, wherein the preset condition are as follows: the running current value is default
Pre-set current value is all larger than in duration.
4. according to the method in claim 2 or 3, which is characterized in that
The pre-set current value is the current value determined according to system high pressure critical value；Wherein, the system high pressure critical value is
When the high voltage protective switchs non-failure, the minimum value of the system high pressure of high voltage protective mode is triggered.
5. according to the method described in claim 1, starting high voltage protective mode when the running current value meets preset condition
Include:
When the running current value meets preset condition, it is out of service to control the unit.
6. described the method according to claim 1, wherein when the running current value meets preset condition
Method further include:
Alert.
7. a kind of unit, which is characterized in that the unit is for method described in any one of right of execution 1 to power 6, the machine
Group includes: current detector, compressor, master controller, high voltage protective switch, wherein the high voltage protective switch is located at described
The high-pressure output tube road of compressor,
The master controller is switched with the high voltage protective and is connected, for judge high voltage protective switch whether failure；If
It is then to send and instruct to the current detector；
The current detector, for after receiving described instruction, detecting the running current value of the compressor；To the master
Controller feeds back the running current value；
The master controller, for controlling the unit starting high voltage protective when the running current value meets preset condition
Mode.
8. unit according to claim 7, which is characterized in that
The preset condition is that the running current value is greater than pre-set current value.
9. unit according to claim 7, which is characterized in that
The preset condition is that the running current value is all larger than pre-set current value in preset duration.
10. unit according to claim 7, which is characterized in that
The current detector is connect with the mains terminals of the compressor, alternatively,
The current detector is socketed in any one phase line of the alternating current inlet wire of the compressor.
11. unit described in any one of -10 according to claim 1, which is characterized in that
The current detector is current sensor.
12. unit described in any one of -10 according to claim 1, which is characterized in that
The unit is air conditioner.
13. a kind of computer equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that the processor is realized when executing described program as described in any one of claims 1 to 6
High voltage protective method.
14. a kind of storage medium comprising computer executable instructions, the computer executable instructions are by computer disposal
For executing such as high voltage protective method described in any one of claims 1 to 6 when device executes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811260032.XA CN109556231A (en) | 2018-10-26 | 2018-10-26 | A kind of unit and its high voltage protective method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811260032.XA CN109556231A (en) | 2018-10-26 | 2018-10-26 | A kind of unit and its high voltage protective method |
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| Publication Number | Publication Date |
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| CN109556231A true CN109556231A (en) | 2019-04-02 |
Family
ID=65865200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811260032.XA Pending CN109556231A (en) | 2018-10-26 | 2018-10-26 | A kind of unit and its high voltage protective method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617606A (en) * | 2019-09-23 | 2019-12-27 | 芜湖美智空调设备有限公司 | Air conditioner and control method and system thereof |
| CN112019023A (en) * | 2019-05-31 | 2020-12-01 | 广东美的制冷设备有限公司 | Drive control method, device, household appliance and computer readable storage medium |
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Application publication date: 20190402 |