CN109140685A - A kind of motor compressor method for controlling number of revolution and device - Google Patents
A kind of motor compressor method for controlling number of revolution and device Download PDFInfo
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- CN109140685A CN109140685A CN201810956639.5A CN201810956639A CN109140685A CN 109140685 A CN109140685 A CN 109140685A CN 201810956639 A CN201810956639 A CN 201810956639A CN 109140685 A CN109140685 A CN 109140685A
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- pressure value
- compressor
- rotational speed
- pressure
- protection
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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
- F24F11/62—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
-
- 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
- F24F11/88—Electrical aspects, e.g. circuits
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The embodiment of the present invention proposes a kind of motor compressor method for controlling number of revolution and device, is related to field of air conditioning.By obtaining the first pressure value in the air-conditioning duct in real time；Then judge whether the first pressure value reaches presetting pre- protection pressure value；If it is, controlling the compressor reduction of speed.Since the motor compressor method for controlling number of revolution that invention provides is provided with pre- protection pressure value; and when the pressure in air-conditioning duct is greater than the pre- protection pressure value; compressor reduction of speed is then controlled, so that the pressure value in air-conditioning duct just carries out reduction of speed before reaching rated pressure value.Motor compressor method for controlling number of revolution provided by the invention and device have the advantages that compressor damage can be prevented.
Description
Technical field
The present invention relates to field of air conditioning, in particular to a kind of motor compressor method for controlling number of revolution and device.
Background technique
Currently, popularizing with automobile, automobile parts industry is also had been to be concerned by more and more people.
In automobile parts, air conditioner parts are particularly important.Air-conditioning generally comprises compressor, condenser, expansion valve and steaming
Send out device, wherein compressor is as main power source.In the real-world operation of air-conditioning, it is possible that pressure mistake in air-conditioning duct
High or too low situation, leads to compressor damage.In order to protect compressor, setting high voltage protective point and low pressure are generallyd use at present
The mode for protecting point, i.e., when the pressure value in air-conditioning duct reaches the pressure value of high voltage protective point and low-voltage protection point, air-conditioning
Control platform can control compressor and stop working, to prevent compressor from causing to press because working in the environment in high pressure or low pressure
The appearance for the case where contracting machine damages.
But in new-energy automotive air-conditioning system, because using motor compressor, so in air-conditioning work, compressor
The general revolving speed of interior motor is larger, when control motor speed is reduced to zero, needs the process of a reduction of speed, i.e., sends out in control platform
After sending halt instruction, speed can not be reduced to zero at once by compressor still linear decline revolving speed.During this period of time, air-conditioner pipe
Pressure value in road can also may continue to increase or reduce, and easily break through pressure protection point, lead to compressor damage.
It is the emphasis of those skilled in the art's concern in view of this, how to solve the above problems.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of motor compressor method for controlling number of revolution, to solve existing skill
After reaching high voltage protective point, compressor damages pressure value in art in air-conditioning duct in down speeding procedure, or reaches
When the pressure value of low-voltage protection point, compressor leads to the problem of damaging because coolant quantity is very few.
It is hollow to solve the prior art another object of the present invention is to provide a kind of motor compressor revolution speed control device
Adjust the pressure value in pipeline after reaching high voltage protective point, compressor damages in down speeding procedure, or reaches low pressure and protect
When protecting the pressure value of point, compressor leads to the problem of damaging because coolant quantity is very few.
To achieve the goals above, technical solution used in the embodiment of the present invention is as follows:
On the one hand, the embodiment of the present invention proposes a kind of motor compressor method for controlling number of revolution, is applied to air-conditioning, the air-conditioning
Including compressor, motor compressor method for controlling number of revolution includes:
When the air-conditioning is in operating status, the first pressure value in the air-conditioning duct is obtained in real time；
Judge whether the first pressure value reaches presetting pre- protection pressure value；
If it is, controlling the compressor reduction of speed.
On the other hand, the embodiment of the invention provides a kind of motor compressor revolution speed control devices, are applied to air-conditioning, described
Air-conditioning includes compressor, and the motor compressor revolution speed control device includes:
Information acquisition unit obtains the in the air-conditioning duct for when the air-conditioning is in operating status in real time
One pressure value；
Judging unit, for judging whether the first pressure value reaches presetting pre- protection pressure value；
Operating status control unit controls if reaching presetting pre- protection pressure value for the first pressure value
The compressor reduction of speed.
Compared with the prior art, the invention has the following advantages:
The present invention provides a kind of motor compressor method for controlling number of revolution and devices, by obtaining the air-conditioning duct in real time
Interior first pressure value；Then judge whether the first pressure value reaches presetting pre- protection pressure value；If it is, control
Make the compressor reduction of speed.Since the motor compressor method for controlling number of revolution that invention provides is provided with pre- protection pressure value, and work as
Pressure in air-conditioning duct is greater than the pre- protection pressure value, then compressor reduction of speed is controlled, so that the pressure value in air-conditioning duct
Just reduction of speed is carried out before reaching rated pressure value.On the one hand, since the working speed of compressor can influence in air-conditioning duct
Pressure value, so may realize that the pressure in air-conditioning duct will not continue to increase, to make air-conditioning after compressor reduction of speed
It can continue to work normally.On the other hand, even if in compressor down speeding procedure, on the pressure in air-conditioning duct still continues
It rises, and rises to the pressure value of high voltage protective point, controller can control compressor and stop working.Since compressor carries out in advance
Reduction of speed, so when controller control compressor stops working zero can be reduced to from a lower revolving speed, reduction of speed required time
It is shorter, and the case where easily breaking through compressor pressure protection point, is less prone in air-conditioning, to protect compressor.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows the flow chart of the motor compressor method for controlling number of revolution of the embodiment of the present invention offer.
Fig. 2 shows the embodiment of the present invention to provide process when air-conditioning duct pressure value reaches high pressure rated pressure value
Figure.
Fig. 3 shows process when the embodiment of the present invention offer air-conditioning duct pressure value reaches low-voltage rated pressure value
Figure.
Fig. 4 shows the module diagram of the motor compressor revolution speed control device of the embodiment of the present invention offer.
Icon: 100- motor compressor revolution speed control device；110- information acquisition unit；120- judging unit；130- fortune
Row status control unit；140- rotating speed of target determination unit.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile of the invention
In description, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " connected ", " connection " shall be understood in a broad sense,
It for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connection, be also possible to electricity
Connection；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary.For
For those skilled in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.It ties below
Attached drawing is closed, is elaborated to some embodiments of the present invention.In the absence of conflict, following embodiment and embodiment
In feature can be combined with each other.
In this embodiment, air-conditioning includes controller, and controller can control compressor and carry out reduction of speed, the i.e. embodiment of the present invention
The motor compressor revolution speed control device of offer is embedded in the controller of air-conditioning.Also, electric compressor provided in this embodiment
Machine method for controlling number of revolution and device are applied in the air-conditioning on automobile, still, in some other embodiments, the electric compressor
Machine method for controlling number of revolution and device can also be applied to other fields, such as domestic air conditioning, and the present embodiment does not do any limit to this
It is fixed.
First embodiment
Fig. 1 is please referred to, Fig. 1 shows the flow chart of motor compressor method for controlling number of revolution provided in an embodiment of the present invention,
Detailed process shown in FIG. 1 is described in detail below.
Step S101 obtains the first pressure value in the air-conditioning duct in real time.
In order to reach the revolving speed for adjusting compressor according to the pressure value (pressure value i.e. in air-conditioning duct) in air-conditioning system
Effect, need in real time obtain air-conditioning system in first pressure value.In the present embodiment, air-conditioning is detected using pressure sensor
Pressure value in system, pressure sensor are electrically connected with the controller, and pressure sensor is installed in the pipeline of air-conditioning, so as to
The pressure value in air-conditioning duct is enough measured, and the pressure value of measurement is transmitted to controller.
Step S102, judges whether the first pressure value reaches presetting pre- protection pressure value, if it is, executing
Step S103.
In the present embodiment, presetting in controller to have pre- protection pressure value, when to reach this pre- for the pressure in air-conditioning duct
When protecting pressure value, if the regulation without the pressure in air-conditioning duct, the pressure in air-conditioning duct may further reach
To the pressure value of pressure protection point, compressor may be damaged.
It should be noted that due to the pressure value in air-conditioning duct it is excessively high or it is too low easily make compressor damage, so
In the present embodiment, presetting pre- protection pressure value includes that high pressure and protection pressure value and low pressure protect pressure value in advance, when the
One pressure value reaches high pressure when protecting pressure value in advance or reaching low pressure and protect pressure value in advance, and controller can execute step S103.
And when first pressure value is not up to presetting high pressure and pressure value or low pressure is protected to protect pressure value in advance in advance, controller control pressure
Contracting machine works normally.
Step S103 makes the compressor reduction of speed.
In practical applications, the pressure value in air-conditioning duct is related to the revolving speed of compressor and other factors, works as air-conditioning
When certain revolving speed being maintained to run, it may cause the pressure change in air-conditioning duct due to the change of other factors, work as air-conditioning duct
When interior pressure reaches presetting pre- protection pressure value, controller can control compressor reduction of speed.
Wherein, presetting pre- protection pressure value includes that high pressure protects pressure value and low pressure to protect pressure value in advance in advance, wherein
In the present embodiment, high pressure protects pressure value to be set as 2.2MP in advance, and low pressure protects pressure value to be set as 1MP in advance, i.e., when acquisition
When first pressure value reaches 2.2MP or 1MP, controller controls compressor reduction of speed.
Step S104, the running speed for obtaining the compressor after reduction of speed in real time and the second pressure in the air-conditioning duct
Value.
After controller controls compressor reduction of speed, controller can also obtain in real time the air-conditioning after reduction of speed by pressure sensor
Second pressure value in pipeline, meanwhile, it is provided with speed probe on the compressor, controller can be obtained by speed probe
Take the current rotating speed of compressor.
Step S105, according between pre-established second pressure value and object run revolving speed corresponding relationship, described second
Pressure value determines object run revolving speed.
Due in air-conditioning duct hypertonia or it is too low when, may cause compressor damage, so in this implementation
In example, high pressure rated pressure value and low-voltage rated pressure value are additionally provided in controller, wherein the high pressure volume of the present embodiment setting
Level pressure force value is 2.8MP, and the high pressure rated pressure value of setting is 0.2MP, of course, in some other embodiments, control
Also high pressure rated pressure value and low-voltage rated pressure value can be arranged according to the actual performance of compressor in device, below in air-conditioning duct
Pressure value it is excessively high for be illustrated.
When the pressure value in air-conditioning duct reaches high pressure rated pressure value, controller can control compressor and stop working,
But linear decline is presented in the revolving speed of compressor at this time, during this period, since process is longer, the pressure value in air-conditioning duct can
It can continue to rise, lead to compressor damage.Therefore, in perfect condition, when to reach high pressure specified for the pressure value in air-conditioning duct
When pressure value, the revolving speed of compressor is zero, i.e., when the pressure value in air-conditioning duct reaches high pressure rated pressure value, compressor is vertical
Stop working.
Therefore, in the present embodiment, in controller it is pre-established have it is corresponding between second pressure value and object run revolving speed
Relationship, and corresponded between second pressure value and object run revolving speed.
For example, object run revolving speed is 0 when second pressure value reaches 2.8MP, and when second pressure value is 2.2MP,
Object run revolving speed is 5000 turns/min, and when from 2.2MP linear increase to 2.8MP, rotating speed of target is by 5000 turns/min
Linear decline is to 0, i.e., when high pressure is protected in advance between pressure value and high pressure rated pressure value, each second pressure value corresponding one
Object run revolving speed, under conditions of the second pressure value, compressor is run with the revolving speed for being less than object run revolving speed
When, it can guarantee in compressor stable operation, i.e., control the running speed of compressor according to object run revolving speed.
Step S106, judges whether the running speed of the compressor is greater than the object run revolving speed, if it is not, then holding
Row step S107, if it is, return step S103.
Step S107 controls the compressor and runs by the running speed.
It, may if indicating to run by current rotating speed when the running speed of compressor is less than or equal to object run revolving speed
The pressure value that will appear in air-conditioning duct no longer increases, i.e., will not damage compressor, at this point, controller can control compressor notice
Reduction of speed, and run according to the running speed.
Step S108, judges whether the second pressure value is greater than presetting high pressure rated pressure value, if it is, holding
Row step S109.
Factor due to determining pressure value in air-conditioning duct is more, even if the revolving speed of control compressor reduces, air-conditioning duct
Interior pressure value may also continue to increase.So in the present embodiment, taking quarter judges whether the second pressure value after reduction of speed is big
In high pressure rated pressure value.
Step S109 controls the compressor and stops working.
When second pressure value is greater than high pressure rated pressure value, in order not to make compressor be damaged, controller can be controlled
Compressor stops working.It should be noted that before reaching high pressure rated pressure value due to the pressure value in air-conditioning duct, control
Device processed has controlled compressor and has carried out reduction of speed, so when the pressure value in air-conditioning duct reaches high pressure rated pressure value, pressure
The revolving speed of contracting machine has fallen to the slow-speed of revolution, it can be ensured that the revolving speed of compressor can after controller issues control instruction
It quickly is reduced to 0, compressor is avoided and damages.
It should be noted that without sequencing between step S108- step S109 and step S105- step S107.
Step S110, judges whether the second pressure value is less than presetting low-voltage rated pressure value, if it is, holding
Row step S111.
Factor due to determining pressure value in air-conditioning duct is more, even if the revolving speed of control compressor reduces, air-conditioning duct
Interior pressure value may also continue to reduce.So in the present embodiment, taking quarter judges whether the second pressure value after reduction of speed is small
In low-voltage rated pressure value.
Step S111 controls the compressor and stops working.
When second pressure value is less than low-voltage rated pressure value, in order not to make compressor be damaged, controller can be controlled
Compressor stops working.It should be noted that before reaching low-voltage rated pressure value due to the pressure value in air-conditioning duct, control
Device processed has controlled compressor and has carried out reduction of speed, so when the pressure value in air-conditioning duct reaches low-voltage rated pressure value, pressure
The revolving speed of contracting machine has fallen to the slow-speed of revolution, it can be ensured that the revolving speed of compressor can after controller issues control instruction
It quickly is reduced to 0, compressor is avoided and damages.
It should be noted that step S110- step S111, step S108- step S109 and step S105- step S107 it
Between without sequencing.
Second embodiment
Referring to Fig. 3, for motor compressor revolution speed control device 100 provided by second embodiment of the invention.It needs
Bright, the basic principle of motor compressor revolution speed control device 100 and the technical effect of generation are identical with the first embodiment, and are
It briefly describes, does not refer to part in the present embodiment, can refer to the corresponding contents in first embodiment.
Motor compressor revolution speed control device 100 includes:
Information acquisition unit 110, for obtaining the first pressure value in the air-conditioning duct in real time.
It should be understood that step S101 can be performed by information acquisition unit 110.
Judging unit 120, for judging whether the first pressure value reaches presetting pre- protection pressure value.
It should be understood that step S102 can be performed by judging unit 120.
Operating status control unit 130 is controlled if reaching presetting pre- protection pressure value for the first pressure value
Make the compressor reduction of speed.
It should be understood that step S103 can be performed by operating status control unit 130.
Information acquisition unit 110 is also used to obtain the running speed and the air-conditioning duct of the compressor after reduction of speed in real time
Interior second pressure value.
It should be understood that step S104 can be performed by information acquisition unit 110.
Object run revolving speed determination unit 140, for according between pre-established second pressure value and object run revolving speed
Corresponding relationship, the second pressure value determine object run revolving speed.
It should be understood that step S105 can be performed by object run revolving speed determination unit 140.
Judging unit 120, for judging whether the running speed of the compressor is greater than the object run revolving speed.
It should be understood that step S106 can be performed by judging unit 120.
Operating status control unit 130 is run for controlling the compressor by the running speed.
It should be understood that executing step S107 by sentencing operating status control unit 130.
Judging unit 120, is also used to judge whether the second pressure value is greater than presetting high pressure rated pressure value.
It should be understood that step S108 can be performed by judging unit 120.
Operating status control unit 130 is also used to control the compressor and stops working.
It should be understood that step S109 can be performed by operating status control unit 130.
Judging unit 120, for judging whether the second pressure value is less than presetting low-voltage rated pressure value.
It should be understood that step S110 can be performed by judging unit 120.
Operating status control unit 130 is also used to control the compressor and stops working.
It should be understood that step S111 can be performed by operating status control unit 130.
In conclusion the present invention provides a kind of motor compressor method for controlling number of revolution and devices, by obtaining institute in real time
State the first pressure value in air-conditioning duct；Then judge whether the first pressure value reaches presetting pre- protection pressure value；
If it is, controlling the compressor reduction of speed.Since the motor compressor method for controlling number of revolution that invention provides is provided with pre- protection
Pressure value, and work as the pressure in air-conditioning duct and be greater than the pre- protection pressure value, then compressor reduction of speed is controlled, so that in air-conditioning duct
Interior pressure value just carries out reduction of speed before reaching rated pressure value.On the one hand, since the working speed of compressor can influence sky
The pressure value in pipeline is adjusted, so may realize that the pressure in air-conditioning duct will not continue to increase after compressor reduction of speed,
To make air-conditioning can continue to work normally.On the other hand, even if in compressor down speeding procedure, pressure in air-conditioning duct according to
So continue to rise, and rise to the pressure value of high voltage protective point, controller can control compressor and stop working.Due to compressor
Reduction of speed is carried out in advance, so can be reduced to zero from a lower revolving speed, reduction of speed when controller control compressor stops working
Required time is shorter, and is less prone in air-conditioning the case where easily breaking through compressor pressure protection point, to protect compressor.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810956639.5A CN109140685A (en) | 2018-08-21 | 2018-08-21 | A kind of motor compressor method for controlling number of revolution and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810956639.5A CN109140685A (en) | 2018-08-21 | 2018-08-21 | A kind of motor compressor method for controlling number of revolution and device |
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| Publication Number | Publication Date |
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| CN109140685A true CN109140685A (en) | 2019-01-04 |
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ID=64790878
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| CN201810956639.5A Pending CN109140685A (en) | 2018-08-21 | 2018-08-21 | A kind of motor compressor method for controlling number of revolution and device |
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Cited By (3)
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| CN113959085A (en) * | 2021-11-24 | 2022-01-21 | 浙江吉利控股集团有限公司 | Air conditioner electric compressor protection method, system, air conditioner controller and storage medium |
| CN116691278A (en) * | 2023-07-17 | 2023-09-05 | 武汉路特斯汽车有限公司 | Control method and control system of air conditioner compressor and vehicle |
| WO2024174640A1 (en) * | 2023-02-22 | 2024-08-29 | 哲弗智能系统（上海）有限公司 | Control method and apparatus for water chiller system, and water chiller system |
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Application publication date: 20190104 |
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