CN110360118A - Method, device and system for heating compressor - Google Patents
Method, device and system for heating compressor Download PDFInfo
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- CN110360118A CN110360118A CN201810312594.8A CN201810312594A CN110360118A CN 110360118 A CN110360118 A CN 110360118A CN 201810312594 A CN201810312594 A CN 201810312594A CN 110360118 A CN110360118 A CN 110360118A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 159
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000008859 change Effects 0.000 claims abstract description 42
- 230000007613 environmental effect Effects 0.000 claims abstract description 25
- 230000001174 ascending effect Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 abstract description 15
- 230000001276 controlling effect Effects 0.000 description 27
- 239000003507 refrigerant Substances 0.000 description 12
- 230000005012 migration Effects 0.000 description 7
- 238000013508 migration Methods 0.000 description 7
- 239000010687 lubricating oil Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/20—Flow
- F04C2270/205—Controlled or regulated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Compressor (AREA)
Abstract
The invention discloses a method, a device and a system for heating a compressor. Wherein, the method comprises the following steps: acquiring an environmental temperature value; and determining whether to start the stator heating mode according to the change situation of the ambient temperature value. The invention can solve the problems that the heating efficiency is low because the crankcase of the compressor is heated by adopting the mode of externally wrapping the electric heating belt in the prior art, and no alternative heating scheme exists when the electric heating belt is invalid. The technical scheme of the invention can improve the heating efficiency, save energy and increase the reliability of the compressor.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a method, a device and a system for heating a compressor.
Background
When the outdoor temperature is too low, a refrigerant migration phenomenon (that is, when the refrigerant moves from one portion of the system pipeline and accumulates in another portion under the action of temperature difference and self gravity and the refrigeration system does not work) occurs in the heat pump air conditioner (refrigeration system). Because the position of the compressor is low, a large amount of the migrated refrigerants exist in the compressor and are mutually dissolved with the lubricating oil, so that the lubricating oil is diluted. And the refrigerant and the lubricating oil are separated in two layers, and when the compressor is started, the suction pressure suddenly drops and the refrigerant boils to take away part of the lubricating oil. The reduction of the lubricating oil easily causes the compressor to be damaged when being started, and because the viscosity of the lubricating oil is higher, the mechanical motion parts (dynamic and static vortex disc meshing pairs) of the compressor cannot be ensured to form an effective lubricating film. Both of these aspects can lead to wear of the compressor bearings.
In order to solve the above problems, in the prior art, the crankcase of the compressor is heated mainly by wrapping the electric heating belt, but the heating efficiency of the electric heating belt is too low due to certain limitations on the heating temperature and the heating power of the electric heating belt.
The problem of inefficiency when adopting the electric heating area to heat for the crankcase of compressor among the prior art, has not proposed effectual solution at present.
Disclosure of Invention
The embodiment of the invention provides a method, a device and a system for heating a compressor, and aims to solve the problem that in the prior art, when an electric heating belt is used for heating a crankcase of the compressor, the efficiency is too low.
In order to solve the above technical problem, in one aspect, the present invention provides a method for heating a compressor, wherein the method includes:
acquiring an environmental temperature value;
and determining whether to start a stator heating mode according to the change situation of the ambient temperature value.
Further, before the obtaining the ambient temperature value, the method further comprises: the compressor is heated at a first preset current value and maintained for a preset time.
Further, the obtaining the ambient temperature value includes: acquiring an environment temperature value every other first preset time period; comparing the currently acquired environmental temperature value with the environmental temperature value acquired last time to determine the change situation of the environmental temperature value; or acquiring weather forecast information in a future preset time period on the terminal in real time through a network; and determining the change situation of the ambient temperature value according to the weather forecast information.
Further, determining whether to start a stator heating mode according to the change situation of the environment temperature value comprises the following steps: judging whether the environmental temperature value is in an ascending trend or a descending trend within a preset detection time period; if the current value is in the ascending trend, controlling the stator heating mode to be in an opening state, wherein the current value in the stator is a second preset current value; and if the current environment temperature value is in a descending trend, comparing the current environment temperature value with a first preset temperature value, and determining whether to start the stator heating mode according to the comparison result.
Further, comparing the current ambient temperature value with a first preset temperature value, and determining whether to start the stator heating mode according to the comparison result, including: if the current environment temperature value is larger than the first preset temperature value, controlling the stator heating mode to be in a closed state; if the current environment temperature value is less than or equal to the first preset temperature value, detecting the temperature value in the compressor; and comparing the temperature value inside the compressor with a second preset temperature value, and determining whether to start the stator heating mode according to the comparison result.
Further, comparing the temperature value inside the compressor with a second preset temperature value, and determining whether to start the stator heating mode according to the comparison result, including: if the temperature value inside the compressor is larger than a second preset temperature value, controlling the stator heating mode to be in a closed state; and if the temperature value inside the compressor is less than or equal to the second preset temperature value, controlling the stator heating mode to be in an opening state, wherein the current value in the stator is a third preset current value.
Further, after controlling the stator heating mode to be in the on state, the method further includes: detecting a temperature value or an environment temperature value of the IPM module of the compressor; and correspondingly controlling the current value in the stator according to the change of the temperature value of the IPM module or the ambient temperature value.
Further, correspondingly controlling the current value in the stator according to the change of the temperature value of the IPM module or the ambient temperature value includes: when the temperature value or the environment temperature value of the IPM module detected in the continuous first specific time period is larger than a third preset temperature value, limiting the current value in the stator to rise; when the temperature value or the environment temperature value of the IPM module detected in the continuous first specific time period is greater than a fourth preset temperature value, reducing the current value in the stator, wherein the fourth preset temperature value is greater than a third preset temperature value; when the detected temperature value of the IPM module or the environment temperature value in the second specific time period is greater than a fifth preset temperature value continuously, controlling the stator heating mode to be in a closed state, wherein the fifth preset temperature value is greater than a fourth preset temperature value; and when the detected temperature value of the IPM module or the environment temperature value in the third specific time period is less than a sixth preset temperature value continuously, controlling the stator heating mode to be restarted, wherein the sixth preset temperature value is less than the third preset temperature value.
Further, the stator heating mode is a mode that the rotor of the compressor is subjected to reversing positioning control through a vector control algorithm, and the stator winding of the compressor is energized with exciting current to heat the compressor.
In another aspect, the present invention provides an apparatus for heating a compressor, the apparatus comprising:
the acquisition module is used for acquiring an environmental temperature value;
and the determining module is used for determining whether to start the stator heating mode according to the change situation of the environment temperature value.
Further, the apparatus further comprises: the heating module is used for heating the compressor at a first preset current value and maintaining a preset duration.
Further, the obtaining module is further configured to obtain an ambient temperature value every first preset time period; comparing the currently acquired environmental temperature value with the environmental temperature value acquired last time to determine the change situation of the environmental temperature value; or acquiring weather forecast information in a future preset time period on the terminal in real time through a network; and determining the change situation of the ambient temperature value according to the weather forecast information.
Further, the determining module is further configured to determine that the ambient temperature value is in an ascending trend or a descending trend within a preset detection time period; if the current value is in the ascending trend, controlling the stator heating mode to be in an opening state, wherein the current value in the stator is a second preset current value; and if the current environment temperature value is in a descending trend, comparing the current environment temperature value with a first preset temperature value, and determining whether to start the stator heating mode according to the comparison result.
Further, the determining module is further configured to control the stator heating mode to be in a closed state if the current ambient temperature value is greater than the first preset temperature value; if the current environment temperature value is less than or equal to the first preset temperature value, detecting the temperature value in the compressor; and comparing the temperature value inside the compressor with a second preset temperature value, and determining whether to start the stator heating mode according to the comparison result.
Further, the determining module is further configured to control the stator heating mode to be in a closed state if the temperature value inside the compressor is greater than a second preset temperature value; and if the temperature value inside the compressor is less than or equal to the second preset temperature value, controlling the stator heating mode to be in an opening state, wherein the current value in the stator is a third preset current value.
Further, the apparatus further comprises: the detection module is used for detecting the temperature value or the environment temperature value of the IPM module of the compressor; and the current value adjusting module is used for correspondingly controlling the current value in the stator according to the change of the temperature value of the IPM module or the environment temperature value.
Further, the current value adjusting module is further configured to limit the rise of the current value in the stator when the temperature value of the IPM module or the ambient temperature value detected in the first specific time period is greater than a third preset temperature value; when the IPM temperature value or the environment temperature value detected in the continuous first specific time period is greater than a fourth preset temperature value, reducing the current value in the stator, wherein the fourth preset temperature value is greater than a third preset temperature value; when the IPM temperature value or the environment temperature value detected in the second specific time period is greater than a fifth preset temperature value continuously, controlling the stator heating mode to be in a closed state, wherein the fifth preset temperature value is greater than a fourth preset temperature value; and the stator heating mode is controlled to be restarted when the detected IPM temperature value or the environment temperature value in the third specific time period is less than a sixth preset temperature value, wherein the sixth preset temperature value is less than the third preset temperature value.
Further, the stator heating mode is a mode that the rotor of the compressor is subjected to reversing positioning control through a vector control algorithm, and the stator winding of the compressor is energized with exciting current to heat the compressor.
In yet another aspect, the present invention provides a compressor heating system comprising the compressor heating apparatus of the above aspect.
By applying the technical scheme of the invention, the ambient temperature value is obtained, and whether the stator heating mode is started or not is determined according to the change situation of the ambient temperature value.
Drawings
FIG. 1 is a flow chart of a compressor heating method according to an embodiment of the present invention;
FIG. 2 is a flow chart of a compressor heating method according to an embodiment of the present invention;
FIG. 3 is a flow chart of a compressor heating method according to an embodiment of the present invention;
FIG. 4 is a flow chart of a compressor heating method according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of regulating a value of a current in a stator according to an embodiment of the present invention;
FIG. 6 is a flow chart of a compressor heating method according to an embodiment of the present invention;
fig. 7 is a block diagram of a structure of a heating apparatus of a compressor according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments, it being understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
In order to solve the problem that the efficiency of the electric heating belt for heating the crankcase of the compressor is too low, the embodiment of the invention provides a compressor heating method, as shown in fig. 1, the method comprises the following steps:
and step S101, acquiring an environmental temperature value.
And step S102, determining whether to start a stator heating mode according to the change situation of the ambient temperature value.
In the above embodiment, the ambient temperature value is obtained, and whether to start the stator heating mode is determined according to the change condition of the ambient temperature value, because the stator is an internal compression component, the stator heating mode will not fail as long as the compressor can normally operate, and the stator heating has smaller temperature and power limitations compared with the electric heating belt, and the heating efficiency can be improved.
In a possible implementation manner, the change situation of the ambient temperature value can be determined by acquiring the ambient temperature value every a first preset time period and comparing the currently acquired ambient temperature value with the previously acquired ambient temperature value. Or acquiring weather forecast information in a future preset time period on the terminal in real time through a network; and determining the change condition of the ambient temperature value according to the weather forecast information. The user may select one of the two manners of obtaining the ambient temperature value or execute the two manners of obtaining the ambient temperature value simultaneously according to actual requirements to improve accuracy of detecting the temperature change.
In one illustrative example of an application, the temperature may be measured from a temperature sensor, such as: and the environment temperature sensing bag acquires the current environment temperature value once every other first preset time period, and compares the acquired current environment temperature value with other environment temperature values in the detection time to determine the change condition of the environment temperature value. The change situation of the environmental temperature value can also be determined by acquiring the weather forecast on the terminal in real time through a network. The terminals may be for example: a handheld device having a wireless connection function, an in-vehicle device, and the like. Common terminals include, for example: the mobile phone includes a mobile phone, a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), and a wearable device such as a smart watch, a smart bracelet, a pedometer, and the like.
In the stator heating mode, the rotor of the compressor can be subjected to commutation positioning control through a vector control algorithm, and the stator winding of the compressor is energized with excitation current. Since the current torque component through the stator is now set to zero, the rotor will not rotate after positioning. Therefore, the heating mode of the stator can be entered, and the heating effect can be adjusted by changing the magnitude of the current value in the stator. The following implementation will specifically explain this.
It should be noted that the technical solution of the present invention is also applicable to the electric heating belt, except that the current value in the electric heating belt does not change.
In a possible implementation manner, before acquiring the ambient temperature value in step S101, the method further includes: the compressor is heated at a first preset current value and maintained for a preset time.
The compressor can be preheated through the stator heating mode, and the compressor can also be preheated through other modes, such as: the compressor is preheated using an electric heating belt.
If the compressor is preheated through the stator heating mode, controlling the stator heating mode to be in an opening state, wherein the current value in the stator is a first preset current value; and after the preset time length, controlling the stator heating mode to be in a closed state. Therefore, the first preset current value is used as the preset preheating duration of the compressor, the refrigerant in the compressor can be completely discharged, and the liquid impact phenomenon is avoided when the compressor is started, so that the related parts of the compressor are damaged. From this, can guarantee the safe start-up of compressor, further improve the reliability of compressor, and compare with the electric heating area, predetermine the time and can shorten by a wide margin, improve preheating efficiency.
The first preset current value and the preset duration can be set by a user according to actual needs, for example: the local temperature, the performance of the compressor, etc. are set at the time.
After the compressor is preheated, whether to start the stator heating mode may be determined according to the change of the ambient temperature value, and thus, in one possible implementation, as shown in fig. 2, the step S102 of determining whether to start the stator heating mode according to the change of the ambient temperature value includes:
step S1021, judging whether the environmental temperature value is in an ascending trend or a descending trend in a preset detection time period.
And step 1022, if the current value is in the ascending trend, controlling the stator heating mode to be in the opening state, wherein the current value in the stator is a second preset current value.
And S1023, if the temperature is in a descending trend, comparing the current environment temperature value with a first preset temperature value, and determining whether to start a stator heating mode according to a comparison result.
When the ambient temperature value rises, the refrigerant migration phenomenon can occur, and the refrigerant migration phenomenon can be avoided by starting the stator heating mode, so that the relevant parts of the compressor are prevented from being damaged.
In one possible implementation manner, as shown in fig. 3, the step S1023 of comparing the current ambient temperature value with a first preset temperature value and determining whether to start the stator heating mode according to the comparison result includes:
and step S1024, if the current environment temperature value is larger than a first preset temperature value, controlling the stator heating mode to be in a closed state.
And step S1025, if the current environment temperature value is less than or equal to a first preset temperature value, detecting the temperature value in the compressor.
And S1026, comparing the temperature value inside the compressor with a second preset temperature value, and determining whether to start the stator heating mode according to the comparison result.
When the ambient temperature value is in a descending trend but is greater than a first preset temperature value, the probability of refrigerant migration is low, and the temperature is high, so that refrigerant migration caused by sudden temperature change is avoided. Therefore, the compressor can be directly brought into a normal operation state without turning on the stator heating mode. It is understood that the first preset temperature value can be set by a user according to actual conditions, such as the performance of the compressor and the current local temperature condition.
In one possible implementation manner, as shown in fig. 4, the step S1026 of comparing the temperature value inside the compressor with a second preset temperature value, and determining whether to start the stator heating mode according to the comparison result includes:
and step S1027, if the temperature value inside the compressor is greater than a second preset temperature value, controlling the stator heating mode to be in a closed state.
And step S1028, if the temperature value inside the compressor is smaller than or equal to a second preset temperature value, controlling the stator heating mode to be in an opening state, wherein the current value inside the stator is a third preset current value.
When the ambient temperature value is in a descending trend and is less than or equal to a first preset temperature value, and the temperature value inside the compressor (the temperature value inside the compressor can be obtained by installing the temperature sensing bulb on the top of the compressor) is greater than a second preset temperature value, it is shown that at this moment, the refrigerant migration phenomenon is not easily caused by the temperature inside the compressor, and the second preset temperature value can be understood as a critical compressor safety temperature value. Thus, the stator heating mode need not be turned on. When the temperature value inside the compressor is smaller than or equal to the second preset temperature value, the risk of refrigerant migration inside the compressor is indicated, and the stator heating mode needs to be started by using the first preset current value. The first preset current value can be determined by a user according to the ambient temperature value at that time.
In the different embodiments, the current value passing through the stator can be changed according to the temperature change, so that the compressor can be heated, the energy consumption can be reduced, and the intelligence of the compressor is further improved.
In one possible implementation, after controlling the stator heating mode to be in the on state, the method further includes: detecting a temperature value of an IPM (Intelligent Power Module) Module of a compressor or an ambient temperature value; and correspondingly controlling the current value in the stator according to the change of the temperature value of the IPM module or the ambient temperature value. Specifically, as shown in fig. 5, when the temperature value of the IPM module or the ambient temperature value detected in the first specific time period is greater than a third preset temperature value, the current value in the stator is limited from increasing; when the temperature value or the environment temperature value of the IPM module detected in the continuous first specific time period is greater than a fourth preset temperature value, reducing the current value in the stator, wherein the fourth preset temperature value is greater than a third preset temperature value; when the detected temperature value of the IPM module or the environment temperature value in the second specific time period is greater than a fifth preset temperature value continuously, controlling the stator heating mode to be in a closed state, wherein the fifth preset temperature value is greater than a fourth preset temperature value; and when the detected temperature value of the IPM module or the environment temperature value in the third specific time period is less than a sixth preset temperature value continuously, controlling the stator heating mode to be restarted, wherein the sixth preset temperature value is less than the third preset temperature value.
Wherein, as shown in fig. 5, the third specific time period is greater than the second specific time period and greater than the first specific time period. The sixth preset temperature value is a recovery temperature value at which the stator heating mode recovers the open state, and therefore the sixth preset temperature value is smaller than the third preset temperature value. When the limiting current value is increased or decreased, the temperature value still tends to increase due to the fact that the stator heating mode is still in the on state, and only the increase amplitude is different.
It will be appreciated that heating of the stator may result in an increase in IPM temperature within the compressor, and that excessive temperatures may damage the drive plates. Therefore, with the above-described embodiment of limiting the current value, damage to the drive plate is avoided while the stator heating mode is turned on.
Fig. 6 shows a flow chart of a compressor heating method according to an embodiment of the present invention. The method comprises the following steps:
and S301, starting working when the ambient temperature is less than T0 and the continuous shutdown time is more than T0 hours.
Step S302, whether the temperature rises is judged by recording the ambient temperature once every T0 hours or detecting the weather change in the future T1 hours. If yes, go to step S303; if not, go to step S304.
And step S303, the stator heating continuously works at a second preset current value.
And step S304, whether the current environment temperature is lower than a first preset temperature value or not. If yes, go to step S305; if not, step S306 is performed.
And step S305, whether the current shell top temperature is lower than a second preset temperature value or not. If yes, go to step S307; if not, step S308 is performed.
Step S306, stator heating is not performed.
And step S307, the stator heating continuously works at a third preset current value.
Step S308, stator heating is not performed.
In the above embodiment, the ambient temperature value is obtained, and whether to start the stator heating mode is determined according to the change condition of the ambient temperature value, because the stator is an internal compression component, the stator heating mode will not fail as long as the compressor can normally operate, and the stator heating has smaller temperature and power limitations compared with the electric heating belt, and the heating efficiency can be improved.
An embodiment of the present invention provides a device for heating a compressor, as shown in fig. 7, the device includes:
an obtaining module 401, configured to obtain an ambient temperature value.
A determining module 402, configured to determine whether to start a stator heating mode according to a change of the ambient temperature value.
In one possible implementation, the apparatus further includes: the heating module is used for heating the compressor at a first preset current value and maintaining a preset duration.
In a possible implementation manner, the obtaining module is further configured to obtain the ambient temperature value every first preset time period within a preset detection time period; comparing the currently acquired environmental temperature value with the environmental temperature value acquired last time to determine the change situation of the environmental temperature value; or acquiring weather forecast information in a future preset time period on the terminal in real time through a network; and determining the change condition of the ambient temperature value according to the weather forecast information.
In a possible implementation manner, the determining module is further configured to determine that the ambient temperature value is in an ascending trend or a descending trend within a preset detection time period; if the current value is in the ascending trend, controlling the stator heating mode to be in an opening state, wherein the current value in the stator is a second preset current value; and if the current environment temperature value is in a descending trend, comparing the current environment temperature value with a first preset temperature value, and determining whether to start the stator heating mode according to the comparison result.
In a possible implementation manner, the determining module is further configured to control the stator heating mode to be in a closed state if the current ambient temperature value is greater than a first preset temperature value; if the current environment temperature value is less than or equal to a first preset temperature value, detecting the temperature value in the compressor; and comparing the temperature value inside the compressor with a second preset temperature value, and determining whether to start the stator heating mode according to the comparison result.
In a possible implementation manner, the determining module is further configured to control the stator heating mode to be in a closed state if the temperature value inside the compressor is greater than a second preset temperature value; and if the temperature value inside the compressor is less than or equal to a second preset temperature value, controlling the stator heating mode to be in an opening state, wherein the current value inside the stator is a third preset current value.
In one possible implementation, the apparatus further includes: the detection module is used for detecting the temperature value or the environment temperature value of the IPM module of the compressor; and the current value adjusting module is used for correspondingly controlling the current value in the stator according to the change of the temperature value of the IPM module or the environment temperature value.
In a possible implementation manner, the current value adjusting module is further configured to limit the rise of the current value in the stator when the temperature value of the IPM module or the ambient temperature value detected in the first specific time period is greater than a third preset temperature value; when the IPM temperature value or the environment temperature value detected in the continuous first specific time period is greater than a fourth preset temperature value, reducing the current value in the stator, wherein the fourth preset temperature value is greater than a third preset temperature value; when the IPM temperature value or the environment temperature value detected in the second specific time period is greater than a fifth preset temperature value continuously, controlling the stator heating mode to be in a closed state, wherein the fifth preset temperature value is greater than a fourth preset temperature value; and the stator heating mode is controlled to be restarted when the IPM temperature value or the environment temperature value detected in the third specific time period is less than a sixth preset temperature value, wherein the sixth preset temperature value is less than the third preset temperature value.
In one possible implementation, the stator heating mode is a mode in which the rotor of the compressor is subjected to commutation positioning control by a vector control algorithm, and the stator windings of the compressor are energized with an excitation current to heat the compressor.
In the above embodiment, the obtaining module obtains the ambient temperature value, and the determining module determines whether to start the stator heating mode according to the change of the ambient temperature value, because the stator is an internal compression component, the stator heating mode will not fail as long as the compressor can normally operate, and the stator heating has smaller temperature and power limitations than the electric heating belt, and can improve the heating efficiency.
The embodiment of the invention also provides a compressor heating system which comprises the compressor heating device in the embodiment.
It should be noted that, in this document, 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, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a mobile terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments illustrated in the drawings, the present invention is not limited to the embodiments, which are illustrative rather than restrictive, and it will be apparent to those skilled in the art that many more modifications and variations can be made without departing from the spirit of the invention and the scope of the appended claims.
Claims (19)
1. A method of compressor heating, the method comprising:
acquiring an environmental temperature value;
and determining whether to start a stator heating mode according to the change situation of the ambient temperature value.
2. The compressor heating method of claim 1, wherein prior to the obtaining an ambient temperature value, the method further comprises:
the compressor is heated at a first preset current value and maintained for a preset time.
3. The compressor heating method of claim 1, wherein the obtaining an ambient temperature value comprises:
acquiring an environment temperature value every other first preset time period; comparing the currently acquired environmental temperature value with the environmental temperature value acquired last time to determine the change situation of the environmental temperature value; or,
acquiring weather forecast information in a future preset time period on a terminal in real time through a network; and determining the change situation of the ambient temperature value according to the weather forecast information.
4. The compressor heating method as claimed in claim 1, wherein the determining whether to turn on a stator heating mode according to the change of the ambient temperature value includes:
judging whether the environmental temperature value is in an ascending trend or a descending trend within a preset detection time period;
if the current value is in the ascending trend, controlling the stator heating mode to be in an opening state, wherein the current value in the stator is a second preset current value;
and if the current environment temperature value is in a descending trend, comparing the current environment temperature value with a first preset temperature value, and determining whether to start the stator heating mode according to the comparison result.
5. The compressor heating method as claimed in claim 4, wherein comparing the current ambient temperature value with a first preset temperature value and determining whether to start the stator heating mode according to the comparison result comprises:
if the current environment temperature value is larger than the first preset temperature value, controlling the stator heating mode to be in a closed state;
if the current environment temperature value is less than or equal to the first preset temperature value, detecting the temperature value in the compressor; and comparing the temperature value inside the compressor with a second preset temperature value, and determining whether to start the stator heating mode according to the comparison result.
6. The compressor heating method as claimed in claim 5, wherein comparing the temperature value inside the compressor with a second preset temperature value and determining whether to start the stator heating mode according to the comparison result comprises:
if the temperature value inside the compressor is larger than a second preset temperature value, controlling the stator heating mode to be in a closed state;
and if the temperature value inside the compressor is less than or equal to the second preset temperature value, controlling the stator heating mode to be in an opening state, wherein the current value in the stator is a third preset current value.
7. The compressor heating method as claimed in any one of claims 1 to 6, wherein after controlling the stator heating mode to be in an on state, the method further comprises:
detecting a temperature value or an environment temperature value of the IPM module of the compressor;
and correspondingly controlling the current value in the stator according to the change of the temperature value of the IPM module or the ambient temperature value.
8. The compressor heating method of claim 7, wherein controlling a current value in a stator according to a change in a temperature value of the IPM module or an ambient temperature value, comprises:
when the temperature value or the environment temperature value of the IPM module detected in the continuous first specific time period is larger than a third preset temperature value, limiting the current value in the stator to rise;
when the temperature value or the environment temperature value of the IPM module detected in the continuous first specific time period is greater than a fourth preset temperature value, reducing the current value in the stator, wherein the fourth preset temperature value is greater than a third preset temperature value;
when the detected temperature value of the IPM module or the environment temperature value in the second specific time period is greater than a fifth preset temperature value continuously, controlling the stator heating mode to be in a closed state, wherein the fifth preset temperature value is greater than a fourth preset temperature value;
and when the detected temperature value of the IPM module or the environment temperature value in the third specific time period is less than a sixth preset temperature value continuously, controlling the stator heating mode to be restarted, wherein the sixth preset temperature value is less than the third preset temperature value.
9. The compressor heating method as claimed in claim 1, wherein the stator heating mode is a mode in which a rotor of the compressor is subjected to commutation positioning control by a vector control algorithm and stator windings of the compressor are energized with an exciting current to heat the compressor.
10. An apparatus for heating a compressor, the apparatus comprising:
the acquisition module is used for acquiring an environmental temperature value;
and the determining module is used for determining whether to start the stator heating mode according to the change situation of the environment temperature value.
11. The compressor heating apparatus of claim 10, further comprising:
the heating module is used for heating the compressor at a first preset current value and maintaining a preset duration.
12. Compressor heating apparatus according to claim 10,
the acquisition module is also used for acquiring an environment temperature value every other first preset time period; comparing the currently acquired environmental temperature value with the environmental temperature value acquired last time to determine the change situation of the environmental temperature value; or acquiring weather forecast information in a future preset time period on the terminal in real time through a network; and determining the change situation of the ambient temperature value according to the weather forecast information.
13. Compressor heating apparatus according to claim 10,
the determining module is further configured to determine that the ambient temperature value is in an ascending trend or a descending trend within a preset detection time period; if the current value is in the ascending trend, controlling the stator heating mode to be in an opening state, wherein the current value in the stator is a second preset current value; and if the current environment temperature value is in a descending trend, comparing the current environment temperature value with a first preset temperature value, and determining whether to start the stator heating mode according to the comparison result.
14. Compressor heating apparatus according to claim 13,
the determining module is further configured to control the stator heating mode to be in a closed state if the current ambient temperature value is greater than the first preset temperature value; if the current environment temperature value is less than or equal to the first preset temperature value, detecting the temperature value in the compressor; and comparing the temperature value inside the compressor with a second preset temperature value, and determining whether to start the stator heating mode according to the comparison result.
15. Compressor heating apparatus according to claim 14,
the determining module is further configured to control the stator heating mode to be in a closed state if the temperature value inside the compressor is greater than a second preset temperature value;
and if the temperature value inside the compressor is less than or equal to the second preset temperature value, controlling the stator heating mode to be in an opening state, wherein the current value in the stator is a third preset current value.
16. The compressor heating apparatus of claims 10-15, further comprising:
the detection module is used for detecting the temperature value or the environment temperature value of the intelligent power IPM module of the compressor;
and the current value adjusting module is used for correspondingly controlling the current value in the stator according to the change of the temperature value of the IPM module or the environment temperature value.
17. Compressor heating apparatus according to claim 16,
the current value adjusting module is further used for limiting the rise of the current value in the stator when the temperature value of the IPM module or the environment temperature value detected in the first specific time period is greater than a third preset temperature value continuously; when the IPM temperature value or the environment temperature value detected in the continuous first specific time period is greater than a fourth preset temperature value, reducing the current value in the stator, wherein the fourth preset temperature value is greater than a third preset temperature value; when the IPM temperature value or the environment temperature value detected in the second specific time period is greater than a fifth preset temperature value continuously, controlling the stator heating mode to be in a closed state, wherein the fifth preset temperature value is greater than a fourth preset temperature value; and the stator heating mode is controlled to be restarted when the detected IPM temperature value or the environment temperature value in the third specific time period is less than a sixth preset temperature value, wherein the sixth preset temperature value is less than the third preset temperature value.
18. The compressor heating apparatus as claimed in claim 10, wherein the stator heating mode is a mode in which a rotor of the compressor is subjected to commutation positioning control by a vector control algorithm and stator windings of the compressor are energized with an excitation current to heat the compressor.
19. A compressor heating system, comprising a compressor heating apparatus as claimed in any one of claims 10 to 18.
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| CN201810312594.8A CN110360118B (en) | 2018-04-09 | 2018-04-09 | Method, device and system for heating compressor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810312594.8A CN110360118B (en) | 2018-04-09 | 2018-04-09 | Method, device and system for heating compressor |
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| CN110360118B CN110360118B (en) | 2020-05-22 |
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| CN201810312594.8A Active CN110360118B (en) | 2018-04-09 | 2018-04-09 | Method, device and system for heating compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113091275A (en) * | 2021-04-08 | 2021-07-09 | 青岛海尔空调器有限总公司 | Preheating method, device and system for air conditioner compressor |
| CN113531820A (en) * | 2021-06-22 | 2021-10-22 | 青岛海尔空调器有限总公司 | Method for preheating compressor of air conditioner, air conditioner and air conditioning system |
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| CN110360118B (en) | 2020-05-22 |
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