CN110332681B - Control method for preventing liquid-carrying start of compressor - Google Patents
Control method for preventing liquid-carrying start of compressor Download PDFInfo
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- CN110332681B CN110332681B CN201910637656.7A CN201910637656A CN110332681B CN 110332681 B CN110332681 B CN 110332681B CN 201910637656 A CN201910637656 A CN 201910637656A CN 110332681 B CN110332681 B CN 110332681B
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- 238000000034 method Methods 0.000 title claims abstract description 58
- 230000008859 change Effects 0.000 claims abstract description 205
- 238000005485 electric heating Methods 0.000 claims abstract description 89
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000004590 computer program Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 230000006870 function Effects 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/62—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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- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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Abstract
The invention provides a control method for preventing a compressor from starting with liquid, wherein the method comprises the following steps: acquiring an ambient temperature and a bottom temperature of a compressor; determining the temperature difference change rate according to the environment temperature and the bottom temperature; and determining whether to start an electric heating belt of the compressor according to the temperature difference change rate. The invention solves the technical problem of high energy consumption of the method for preventing the compressor from starting with liquid in the prior art, can reasonably regulate and control the start and stop of the electric heating belt of the compressor, and achieves the technical effect of reducing energy consumption while preventing the compressor from starting with liquid.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method for preventing a compressor from being started with liquid.
Background
Under the condition that the air conditioning unit stops for a long time, the material made of the compressor is insensitive to the temperature change of the outdoor environment, and the temperature change inside the compressor is slow. Therefore, when the outdoor environment temperature rises fast, the whole temperature reaction of the compressor is slow, the conditions that the outdoor environment temperature is high and the temperature of the compressor is low are caused, so that the low pressure is formed inside the compressor, the refrigerant flows to the compressor from the two devices and is accumulated, the accumulated liquid is accumulated at the bottom of the compressor, the liquid is caused to be carried by the compressor to start, and the reliability of the compressor is directly influenced by the frequent liquid carrying starting of the compressor.
At present, in order to avoid the liquid-carrying start of the compressor, an electric heating belt is generally used for carrying out auxiliary heating on liquid refrigerant when the compressor is stopped so as to fully evaporate the liquid refrigerant. However, this control method causes the electric heating belt to be opened for a long time when the unit is stopped, so that the energy consumption is high when the unit is stopped.
No effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a control method for preventing a compressor from starting with liquid, which comprises the following steps: acquiring an ambient temperature and a bottom temperature of a compressor; determining the temperature difference change rate according to the environment temperature and the bottom temperature; and determining whether to start an electric heating belt of the compressor according to the temperature difference change rate.
In one embodiment, determining the rate of change of the temperature difference based on the ambient temperature and the bottom temperature comprises: calculating the temperature difference between the ambient temperature and the bottom temperature; determining whether the temperature difference is greater than a preset temperature difference threshold value; and under the condition that the temperature difference is determined to be larger than the preset temperature difference threshold value, calculating the change rate of the temperature difference between the environment temperature and the bottom temperature along with the change of time to obtain the change rate of the temperature difference.
In one embodiment, after determining whether the temperature difference is greater than the preset temperature difference threshold, the method further comprises: and under the condition that the temperature difference is not larger than the preset temperature difference threshold value, determining not to start an electric heating belt in the compressor.
In one embodiment, calculating a rate of change of a temperature difference between the ambient temperature and the bottom temperature over time to obtain a rate of change of the temperature difference comprises: acquiring the ambient temperature and the bottom temperature of the compressor at two moments separated by a preset time interval, and respectively calculating the temperature difference between the ambient temperature and the bottom temperature corresponding to the two moments; and dividing the absolute value of the difference value of the temperature differences corresponding to the two moments by a preset time interval to obtain the temperature difference change rate.
In one embodiment, after determining whether to turn on the electric heating belt of the compressor according to the temperature difference change rate, the method further includes: in case of determining to turn on the electric heating bands of the compressor, the number of the electric heating bands to be turned on is determined according to the temperature difference change rate.
In one embodiment, determining whether to turn on an electric heating belt of a compressor according to a temperature difference change rate includes: determining whether the temperature difference change rate is greater than a first preset change rate; determining not to start an electric heating belt of the compressor under the condition that the temperature difference change rate is larger than a first preset change rate; and under the condition that the temperature difference change rate is not larger than the first preset change rate, determining to start an electric heating belt of the compressor.
In one embodiment, determining the number of the electric heating strips to be turned on according to the temperature difference change rate includes: determining whether the temperature difference change rate is greater than a second preset change rate, wherein the second preset change rate is smaller than the first preset change rate; and under the condition that the temperature difference change rate is larger than the second preset change rate, determining to start a first preset number of electric heating belts.
In one embodiment, after determining whether the rate of change of the temperature difference is greater than a second preset rate, the method further comprises: determining whether the temperature difference change rate is greater than a third preset change rate or not under the condition that the temperature difference change rate is not greater than the second preset change rate, wherein the third preset change rate is smaller than the second preset change rate; and under the condition that the temperature difference change rate is larger than a third preset change rate, determining to start a second preset number of electric heating belts, wherein the second preset number is larger than the first preset number.
In one embodiment, after determining whether the rate of change of the temperature difference is greater than a third preset rate, the method further comprises: and under the condition that the temperature difference change rate is not larger than a third preset change rate, determining to start a third preset number of electric heating belts, wherein the third preset number is larger than the second preset number.
In one embodiment, the first predetermined number is 1, the second predetermined number is 2, and the third predetermined number is 3.
The embodiment of the invention also provides a control device for preventing the compressor from starting with liquid, which comprises: the acquisition module is used for acquiring the ambient temperature and the bottom temperature of the compressor; the first determining module is used for determining the temperature difference change rate according to the environment temperature and the bottom temperature; and the second determination module is used for determining whether to start the electric heating belt of the compressor according to the temperature difference change rate.
The embodiment of the invention also provides an air conditioner which comprises the control device in the embodiment.
An embodiment of the present invention further provides a computer device, where the computer device includes: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the control method described in any of the above embodiments when executing the computer program.
An embodiment of the present invention further provides a non-volatile computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the control method described in any of the above embodiments.
In the above embodiment, the opening of the electric heating belt is controlled according to the change rate of the temperature difference between the ambient temperature and the bottom temperature of the compressor, so that the opening and the closing of the electric heating belt of the compressor can be reasonably regulated and controlled, the bottom of the compressor can be reasonably heated under the condition of different temperature changes, the technical effect of preventing the compressor from being started with liquid can be realized, the energy consumption of the unit in standby can be reduced, and unnecessary energy waste is avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a control method for preventing a flooded start of a compressor in accordance with an embodiment of the present invention;
FIG. 2 is a flow chart of a control method for preventing a flooded start of a compressor in accordance with an embodiment of the present invention;
fig. 3 is a schematic view of an apparatus for preventing a liquid-bearing start of a compressor according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
The embodiment of the application provides a control method for preventing the liquid-carrying starting of a compressor, and fig. 1 shows a flow chart of the control method for preventing the liquid-carrying starting of the compressor in the embodiment of the application. Although the present application provides method operational steps or apparatus configurations as illustrated in the following examples or figures, more or fewer operational steps or modular units may be included in the methods or apparatus based on conventional or non-inventive efforts. In the case of steps or structures which do not logically have the necessary cause and effect relationship, the execution sequence of the steps or the module structure of the apparatus is not limited to the execution sequence or the module structure described in the embodiments and shown in the drawings of the present application. When the described method or module structure is applied in an actual device or end product, the method or module structure according to the embodiments or shown in the drawings can be executed sequentially or executed in parallel (for example, in a parallel processor or multi-thread processing environment, or even in a distributed processing environment).
Specifically, as shown in fig. 1, a control method for preventing a compressor from starting with liquid provided by an embodiment of the present application may include the following steps:
step S101, an ambient temperature and a bottom temperature of the compressor are acquired.
And S102, determining the temperature difference change rate according to the environment temperature and the bottom temperature.
Specifically, the bottom temperature T2 after the compressor is stopped can be detected by arranging a temperature bulb at the bottom of the compressor, and the ambient temperature T1 after the compressor is stopped can be detected by additionally arranging an outer ring temperature bulb. After obtaining the plurality of ambient temperatures and the bottom temperature of the compressor, a temperature difference change rate may be determined according to the ambient temperature and the bottom temperature.
And step S103, determining whether to start the electric heating belt of the compressor according to the temperature difference change rate.
After determining the temperature difference change rate, it may be determined whether to turn on the electric heating belt of the compressor according to the temperature difference change rate.
In the above embodiment, the opening of the electric heating belt is controlled according to the change rate of the temperature difference between the ambient temperature and the bottom temperature of the compressor, so that the opening and the closing of the electric heating belt of the compressor can be reasonably regulated and controlled, the bottom of the compressor can be reasonably heated under the condition of different temperature changes, the technical effect of preventing the compressor from being started with liquid can be realized, the energy consumption of the unit in standby can be reduced, and unnecessary energy waste is avoided.
Further, in one embodiment, determining the rate of change of the temperature difference based on the ambient temperature and the bottom temperature may include: calculating the temperature difference between the ambient temperature and the bottom temperature; determining whether the temperature difference is greater than a preset temperature difference threshold value; and under the condition that the temperature difference is determined to be larger than the preset temperature difference threshold value, calculating the change rate of the temperature difference between the environment temperature and the bottom temperature along with the change of time to obtain the change rate of the temperature difference.
Specifically, after the detected ambient temperature T1 and bottom temperature T2 are acquired, the temperature difference Δ T — T1-T2 is calculated. A preset temperature difference threshold T can be set according to actual needs, and whether the temperature difference delta T is larger than the preset temperature difference threshold T or not is judged. When the delta T is larger than T, the integral temperature of the compressor is lower than the ambient temperature, the default internal pressure of the compressor is lower, and the refrigerant begins to migrate and accumulate to the interior of the compressor. In this case, a change rate of a temperature difference between the ambient temperature and the bottom temperature with time is calculated to obtain a change rate of the temperature difference, and whether to turn on the electric heating belt of the compressor is determined according to the change rate of the temperature difference.
In the above embodiment, through controlling opening of electric heating belt according to the inside and outside difference in temperature of compressor and the rate of change of the difference in temperature both for can rationally regulate and control opening and shutting of compressor electric heating belt more, not only can realize preventing the compressor and take the technical effect of liquid start-up, can also reduce the energy consumption of unit when awaiting the opportune moment, avoid the energy extravagant.
Further, in one embodiment, after determining whether the temperature difference is greater than a preset temperature difference threshold, the method may further include: and under the condition that the temperature difference is not larger than the preset temperature difference threshold value, determining not to start an electric heating belt in the compressor.
Specifically, when the delta T is less than or equal to T, the integral temperature of the compressor is high, the pressure inside the default press is high, the refrigerant is not transferred to the inside of the press to be accumulated, and an electric heating belt is not required to be started. By the mode, energy consumption can be reduced, and energy can be saved.
Further, in one embodiment, calculating a rate of change in the temperature difference between the ambient temperature and the bottom temperature over time may include: acquiring the ambient temperature and the bottom temperature of the compressor at two moments separated by a preset time interval, and respectively calculating the temperature difference between the ambient temperature and the bottom temperature corresponding to the two moments; and dividing the absolute value of the difference value of the temperature differences corresponding to the two moments by a preset time interval to obtain the temperature difference change rate. For example, the temperature difference value Δ T may be calculated once every 5s, the first temperature difference value may be recorded as Δ T1, the second temperature difference value may be recorded as Δ T2, and the temperature difference value change rate P | Δ T1 — Δ T2|/5 may be calculated.
Further, in one embodiment, after determining whether to turn on the electric heating belt of the compressor according to the temperature difference change rate, the method further includes: in case of determining to turn on the electric heating bands of the compressor, the number of the electric heating bands to be turned on is determined according to the temperature difference change rate.
Specifically, in the case where it is determined that the electric heating bands of the compressor need to be turned on according to the temperature difference change rate, the number of the electric heating bands to be turned on may be determined according to the temperature difference change rate. For example, in the case where the rate of change in temperature difference is large, a smaller number of electric heating strips may be turned on; under the condition that the temperature difference change rate is small, a large number of electric heating belts can be started. Through the mode, the bottom of the compressor can be heated by reasonable electric heating power under different temperature change conditions.
Further, in one embodiment, determining whether to turn on the electric heating belt of the compressor according to the temperature difference change rate may include: determining whether the temperature difference change rate is greater than a first preset change rate; determining not to start the electric heating belt under the condition that the temperature difference change rate is larger than a first preset change rate; and under the condition that the temperature difference change rate is not larger than the first preset change rate, determining to start the electric heating belt.
Specifically, when it is determined that the temperature difference change rate is greater than the first preset change rate, it indicates that the temperature difference change is fast, the temperature difference between the bottom temperature of the compressor and the ambient temperature is reduced very fast, and the energy consumption can be further reduced without turning on the electric heating belt. When the temperature difference change rate is determined to be larger than the first preset change rate, the temperature difference change is slow, the temperature difference between the bottom temperature of the compressor and the ambient temperature is reduced slowly, the electric heating belt needs to be started, and the efficiency can be improved.
Further, in one embodiment, determining the number of the electric heating strips to be turned on according to the temperature difference change rate may include: determining whether the temperature difference change rate is greater than a second preset change rate, wherein the second preset change rate is smaller than the first preset change rate; and under the condition that the temperature difference change rate is larger than the second preset change rate, determining to start a first preset number of electric heating belts.
Specifically, in the case where it is determined that the rate of change in the temperature difference is not greater than the first preset rate of change, it indicates that the electric heating belt needs to be turned on. Since there are a plurality of electric heating bands in the compressor, the number of heating bands to be turned on can be determined according to actual conditions. By setting the second preset change rate smaller than the first preset change rate, when the temperature difference change rate is between the first preset change rate and the second preset change rate, the first preset number of electric heating strips can be started.
Further, in one embodiment, after determining whether the rate of change of the temperature difference is greater than a second preset rate, the method may further include: determining whether the temperature difference change rate is greater than a third preset change rate or not under the condition that the temperature difference change rate is not greater than the second preset change rate, wherein the third preset change rate is smaller than the second preset change rate; and under the condition that the temperature difference change rate is larger than a third preset change rate, determining to start a second preset number of electric heating belts, wherein the second preset number is larger than the first preset number.
Specifically, in the case where it is determined that the temperature difference change rate is not greater than the second preset change rate, the temperature difference change rate may be accelerated by increasing the number of the heating zones that are turned on. Accordingly, it is determined that the second preset number of the electric heating zones are turned on when it is determined that the temperature difference change rate is between the second preset change rate and the third preset change rate. The third preset change rate is smaller than the second preset change rate, and the second preset number is larger than the first preset number.
Further, in one embodiment, after determining whether the rate of change of the temperature difference is greater than a third preset rate, the method may further include: and under the condition that the temperature difference change rate is not larger than a third preset change rate, determining to start a third preset number of electric heating belts, wherein the third preset number is larger than the second preset number.
Specifically, in the case where it is determined that the temperature difference change rate is not greater than the second preset change rate, the temperature difference change rate may be accelerated by continuously increasing the number of the heating zones that are turned on. Therefore, in the case where it is determined that the temperature difference change rate is not greater than the third preset change rate, it may be determined that turning on the third preset number of electric heating brings an acceleration of the temperature difference change rate. Wherein the third preset number is greater than the second preset number.
For example, the first preset number may be set to 1, the second preset number may be set to 2, and the third preset number may be set to 3.
While three preset change rates are set to determine the number of the electric heating strips to be turned on in the above embodiment, it is understood that in other embodiments, more preset change rates and corresponding preset numbers may be set, so that the control is finer, and the number of the electric heating strips to be turned on in a more reasonable manner is determined.
The above method is described below with reference to a specific example, however, it should be noted that the specific example is only for better describing the present application and is not to be construed as limiting the present application.
Referring to fig. 2, a flow chart of a control method for preventing a compressor from starting with liquid in an embodiment of the present application is shown. As shown in fig. 2, the control method may include the steps of:
step 1, acquiring an ambient temperature T1 and a bottom temperature T2 of a compressor, and calculating a temperature difference delta T between the ambient temperature T1 and the bottom temperature T2 to be T1-T2;
step 2, determining whether the temperature difference delta T is larger than a preset temperature difference threshold value T, if so, executing step 3, otherwise, executing step 9;
step 3, calculating a temperature difference value delta T once every 5s, recording a temperature difference value delta T1 once, recording a temperature difference value delta T2 for the second time, and calculating a temperature difference value change rate P which is (delta T1-delta T2)/5;
step 4, comparing the P value with a preset change rate A, B, C at intervals of 30s, wherein the higher the P value is, the faster the speed of reducing the temperature difference between the bottom temperature of the compressor and the ambient temperature is, and the faster the overall temperature of the compressor rises; controlling the starting number of the electric heating belts of the compressor according to the P value: when P is larger than A, the electric heating belt is not started; when B is more than P and less than or equal to A, determining to start 1 electric heating belt; when C is more than P and less than or equal to B, determining to start 2 electric heating belts; when P is less than or equal to C, determining to start 3 electric heating belts; continuously determining whether the temperature difference delta T is larger than a preset temperature difference threshold value T or not during the period, if so, returning to the step 3, otherwise, executing the step 5;
and 5, determining to close the electric heating belt.
According to the control method for preventing the compressor from being started with liquid in the embodiment, after the compressor is stopped, whether the electric heating belt needs to be started or not is judged according to the difference value and the change condition of the bottom temperature and the environment temperature of the compressor, and after the electric heating belt of the compressor needs to be started, the starting number of the electric heating belt of the compressor is judged according to the change rate of the difference value of the bottom temperature and the environment temperature of the compressor, so that the heating effect of the electric heating belt is improved, and meanwhile, the waste of energy can be reduced. By reasonably controlling the actual required heating power through the control method, the standby power consumption of the unit can be reduced while the electric heating effect is ensured, and the effects of energy conservation and high efficiency are achieved.
Based on the same inventive concept, the embodiment of the present invention also provides a control device for preventing the compressor from starting with liquid, as described in the following embodiments. Since the principle of solving the problem of the control device for preventing the compressor from starting with liquid is similar to the control method for preventing the compressor from starting with liquid, the implementation of the control device for preventing the compressor from starting with liquid can be referred to the implementation of the control method for preventing the compressor from starting with liquid, and repeated parts are not described in detail. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated. Fig. 3 is a block diagram of a control device for preventing a compressor from starting with liquid according to an embodiment of the present invention, as shown in fig. 3, including: an obtaining module 301, a first determining module 302, and a second determining module 303, the structure of which will be described below.
The obtaining module 301 is used for obtaining the ambient temperature and the bottom temperature of the compressor.
The first determination module 302 determines a rate of change of the temperature difference based on the ambient temperature and the bottom temperature.
The second determination module 303 is used for determining whether to start the electric heating belt of the compressor according to the temperature difference change rate.
In one embodiment, the first determining module may be specifically configured to: calculating the temperature difference between the ambient temperature and the bottom temperature; determining whether the temperature difference is greater than a preset temperature difference threshold value; and under the condition that the temperature difference is determined to be larger than the preset temperature difference threshold value, calculating the change rate of the temperature difference between the environment temperature and the bottom temperature along with the change of time to obtain the change rate of the temperature difference.
In an embodiment, the first determining module may be further specifically configured to: after determining whether the temperature difference is greater than a preset temperature difference threshold, determining not to start an electric heating belt in the compressor under the condition that the temperature difference is not greater than the preset temperature difference threshold.
In one embodiment, calculating a rate of change of a temperature difference between the ambient temperature and the bottom temperature over time to obtain a rate of change of the temperature difference may include: acquiring the ambient temperature and the bottom temperature of the compressor at two moments separated by a preset time interval, and respectively calculating the temperature difference between the ambient temperature and the bottom temperature corresponding to the two moments; and dividing the absolute value of the difference value of the temperature differences corresponding to the two moments by a preset time interval to obtain the temperature difference change rate.
In one embodiment, the control apparatus may further include a third determining module, and the third determining module may be configured to: after determining whether to turn on the electric heating bands of the compressor according to the temperature difference change rate, in case of determining to turn on the electric heating bands of the compressor, the number of the electric heating bands to be turned on is determined according to the temperature difference change rate.
In one embodiment, the second determining module may be specifically configured to: determining whether the temperature difference change rate is greater than a first preset change rate; determining not to start an electric heating belt of the compressor under the condition that the temperature difference change rate is larger than a first preset change rate; and under the condition that the temperature difference change rate is not larger than the first preset change rate, determining to start an electric heating belt of the compressor.
In one embodiment, the third determining module may be specifically configured to: determining whether the temperature difference change rate is greater than a second preset change rate, wherein the second preset change rate is smaller than the first preset change rate; and under the condition that the temperature difference change rate is larger than the second preset change rate, determining to start a first preset number of electric heating belts.
In an embodiment, the third determining module may be further specifically configured to: after determining whether the temperature difference change rate is greater than a second preset change rate, determining whether the temperature difference change rate is greater than a third preset change rate under the condition that the temperature difference change rate is not greater than the second preset change rate, wherein the third preset change rate is less than the second preset change rate; and under the condition that the temperature difference change rate is larger than a third preset change rate, determining to start a second preset number of electric heating belts, wherein the second preset number is larger than the first preset number.
In an embodiment, the third determining module may be further specifically configured to: and after determining whether the temperature difference change rate is greater than a third preset change rate, determining to start a third preset number of electric heating belts under the condition that the temperature difference change rate is not greater than the third preset change rate, wherein the third preset number is greater than the second preset number.
In one embodiment, the first predetermined number is 1, the second predetermined number is 2, and the third predetermined number is 3.
The embodiment of the invention also provides an air conditioner which can comprise the control device for preventing the compressor from starting with liquid in any embodiment.
The embodiment of the invention also provides software for executing the steps of the control method in any embodiment.
An embodiment of the present invention further provides a non-volatile computer-readable storage medium, where the software is stored in the storage medium, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
An embodiment of the present invention further provides a computer device, where the computer device includes: memory, processor and computer program stored on the memory and executable on the processor, characterized in that the steps of the control method described in any of the above embodiments are implemented when the computer program is executed by the processor.
From the above description, it can be seen that the embodiments of the present invention achieve the following technical effects: the opening of the electric heating belt is controlled according to the inside and outside temperature difference of the compressor and the change rate of the temperature difference, so that the opening and the closing of the electric heating belt of the compressor can be reasonably regulated and controlled, the bottom of the compressor can be reasonably heated under the condition of different temperature changes, the technical effect of preventing the compressor from being started with liquid can be achieved, the energy consumption of a unit in standby can be reduced, and unnecessary energy waste is avoided.
Although various specific embodiments are mentioned in the disclosure of the present application, the present application is not limited to the cases described in the industry standards or the examples, and the like, and some industry standards or the embodiments slightly modified based on the implementation described in the custom manner or the examples can also achieve the same, equivalent or similar, or the expected implementation effects after the modifications. Embodiments employing such modified or transformed data acquisition, processing, output, determination, etc., may still fall within the scope of alternative embodiments of the present application.
Although the present application provides method steps as described in an embodiment or flowchart, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an apparatus or client product in practice executes, it may execute sequentially or in parallel (e.g., in a parallel processor or multithreaded processing environment, or even in a distributed data processing environment) according to the embodiments or methods shown in the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
The devices or modules and the like explained in the above embodiments may be specifically implemented by a computer chip or an entity, or implemented by a product with certain functions. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the present application, the functions of each module may be implemented in one or more pieces of software and/or hardware, or a module that implements the same function may be implemented by a combination of a plurality of sub-modules, and the like. The above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and other divisions may be realized in practice, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a mobile terminal, a server, or a network device) to execute the method according to the embodiments or some parts of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
While the present application has been described by way of examples, those of ordinary skill in the art will appreciate that there are numerous variations and permutations of the present application that do not depart from the spirit of the present application and that the appended embodiments are intended to include such variations and permutations without departing from the present application.
Claims (13)
1. A control method for preventing a compressor from starting with liquid, comprising:
acquiring an ambient temperature and a bottom temperature of a compressor;
determining a temperature difference change rate according to the environment temperature and the bottom temperature;
determining whether to start an electric heating belt of the compressor according to the temperature difference change rate;
after determining whether to turn on the electric heating belt of the compressor according to the temperature difference change rate, further comprising:
and determining the number of the electric heating bands to be turned on according to the temperature difference change rate in case of determining to turn on the electric heating bands of the compressor.
2. The method of claim 1, wherein determining a rate of change of temperature difference from the ambient temperature and the bottom temperature comprises:
calculating a temperature difference between the ambient temperature and the bottom temperature;
determining whether the temperature difference is greater than a preset temperature difference threshold value;
and under the condition that the temperature difference is determined to be larger than the preset temperature difference threshold value, calculating the change rate of the temperature difference between the environment temperature and the bottom temperature along with the change of time to obtain the change rate of the temperature difference.
3. The method of claim 2, after determining whether the temperature difference is greater than a preset temperature difference threshold, further comprising:
and under the condition that the temperature difference is not larger than the preset temperature difference threshold value, determining not to start an electric heating belt in the compressor.
4. The method of claim 2, wherein calculating a rate of change of a temperature difference between the ambient temperature and the bottom temperature over time, resulting in a rate of change of temperature difference, comprises:
acquiring the ambient temperature and the bottom temperature of a compressor at two moments separated by a preset time interval, and respectively calculating the temperature difference between the ambient temperature and the bottom temperature corresponding to the two moments;
and dividing the absolute value of the difference value of the temperature differences corresponding to the two moments by the preset time interval to obtain the temperature difference change rate.
5. The method of claim 1, wherein determining whether to turn on an electrical heating belt of the compressor based on the rate of change of temperature difference comprises:
determining whether the temperature difference change rate is greater than a first preset change rate;
determining not to start an electric heating belt of the compressor under the condition that the temperature difference change rate is larger than a first preset change rate;
and under the condition that the temperature difference change rate is not larger than a first preset change rate, determining to start an electric heating belt of the compressor.
6. The method of claim 5, wherein determining the number of electrically heated bands to turn on based on the rate of change of temperature difference comprises:
determining whether the temperature difference change rate is greater than a second preset change rate, wherein the second preset change rate is less than the first preset change rate;
and under the condition that the temperature difference change rate is larger than the second preset change rate, determining to start a first preset number of electric heating belts.
7. The method of claim 6, after determining whether the rate of change of temperature difference is greater than a second preset rate, further comprising:
determining whether the temperature difference change rate is greater than a third preset change rate or not under the condition that the temperature difference change rate is not greater than the second preset change rate, wherein the third preset change rate is smaller than the second preset change rate;
and under the condition that the temperature difference change rate is larger than the third preset change rate, determining to start a second preset number of electric heating belts, wherein the second preset number is larger than the first preset number.
8. The method of claim 7, after determining whether the rate of change of temperature difference is greater than a third predetermined rate, further comprising:
and under the condition that the temperature difference change rate is not larger than the third preset change rate, determining to start a third preset number of electric heating belts, wherein the third preset number is larger than the second preset number.
9. The method of claim 8, wherein the first predetermined number is 1, the second predetermined number is 2, and the third predetermined number is 3.
10. A control device for preventing a compressor from starting with liquid, comprising:
the acquisition module is used for acquiring the ambient temperature and the bottom temperature of the compressor;
the first determining module is used for determining the temperature difference change rate according to the environment temperature and the bottom temperature;
the second determining module is used for determining whether to start an electric heating belt of the compressor according to the temperature difference change rate;
the third determination module may be to: after determining whether to turn on the electric heating bands of the compressor according to the temperature difference change rate, in case of determining to turn on the electric heating bands of the compressor, the number of the electric heating bands to be turned on is determined according to the temperature difference change rate.
11. An air conditioner, comprising: the control device of claim 10.
12. A computer device, comprising: memory, processor and computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 9 when executing the computer program.
13. A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method of any of claims 1 to 9.
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| CN113124538B (en) * | 2021-05-08 | 2022-03-04 | 珠海格力电器股份有限公司 | Compressor preheating control method and device and air conditioning equipment |
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| CN107084491A (en) * | 2017-04-28 | 2017-08-22 | 青岛海尔空调器有限总公司 | The control method and device of air-conditioner outdoor unit electric heater |
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| JPH08247572A (en) * | 1995-03-07 | 1996-09-27 | Mitsubishi Heavy Ind Ltd | Engine-drive type air conditioner |
| CN201330702Y (en) * | 2009-01-19 | 2009-10-21 | 珠海格力电器股份有限公司 | Vortex compressor for preventing liquid impact |
| CN101737906B (en) * | 2009-11-08 | 2012-06-27 | 海信科龙电器股份有限公司 | Standby electric heating control device and method of air conditioner |
| CN106016606B (en) * | 2016-05-25 | 2019-05-14 | 珠海格力电器股份有限公司 | Control method and device for electric heating belt of air conditioner compressor |
| CN107024046A (en) * | 2017-03-27 | 2017-08-08 | 广东美的制冷设备有限公司 | A kind of air-conditioner control method and air conditioner |
| CN107763776A (en) * | 2017-11-20 | 2018-03-06 | 珠海格力电器股份有限公司 | Air Conditioning Unit and Refrigerant Migration Control Method |
| CN109612017A (en) * | 2018-11-23 | 2019-04-12 | 宁波奥克斯电气股份有限公司 | The method for heating and controlling and air conditioner of a kind of compressor and freeze oil heating tape |
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