CN107975925B - Fan gear adjusting method and device - Google Patents

Fan gear adjusting method and device Download PDF

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Publication number
CN107975925B
CN107975925B CN201711130181.XA CN201711130181A CN107975925B CN 107975925 B CN107975925 B CN 107975925B CN 201711130181 A CN201711130181 A CN 201711130181A CN 107975925 B CN107975925 B CN 107975925B
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gear
fan
difference
current
temperature
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CN107975925A (en
Inventor
王晓红
王传华
谷月明
曾凡卓
宋鹏
孟红武
张建鹏
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24Means for preventing or suppressing noise
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention provides a method and a device for adjusting a gear of a fan, wherein the method comprises the following steps: acquiring the temperature of a high-pressure sensor and the ambient temperature; according to the difference value between the temperature of the high-pressure sensor and the ambient temperature, the gear of the fan is adjusted for the first time; after the first adjustment, under the condition that the difference value between the temperature of the high-pressure sensor and the ambient temperature meets the preset condition, the gear of the fan is subjected to second adjustment according to the current of the compressor. The invention reduces the running energy consumption of the fan, improves the gear control precision of the fan, and improves the energy saving performance of the running of the fan and the running energy efficiency ratio of the whole fan.

Description

Fan gear adjusting method and device
Technical Field
The invention relates to the technical field of equipment control, in particular to a method and a device for adjusting a gear of a fan.
Background
In a refrigeration operation mode, a traditional fan gear adjusting and controlling method generally divides an environment temperature section in a rough manner according to an outdoor environment temperature range of a use position of a unit. Then, a low ring temperature section is adopted, the fan runs at a low gear, a high ring temperature section is adopted, and the fan is controlled in a double-gear adjusting mode of the highest gear running, and even a fixed gear running mode of the highest gear of the fan can be directly adopted.
Therefore, the problems of increased fan operation energy consumption and poor adjusting precision exist in the existing fan gear adjusting control mode. Especially for large units, the power consumption condition of the fan is an important index of energy conservation in the product operation process.
Traditional fan gear adjustment control mode belongs to coarse formula and adjusts, does not have reasonable gear control mode to there is unit operation exhaust pressure unstability easily, and the fan noise is big on the contrary, the poor problem of reliability, and simultaneously, coarse fan gear adjustment control mode can reduce the operating efficiency of unit, and increase operation power consumption, and can increase the operation input cost of product.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a fan gear adjusting method to achieve the purposes of reducing fan operation energy consumption and improving adjusting precision, and the method comprises the following steps:
acquiring the temperature of a high-pressure sensor and the ambient temperature;
according to the difference value between the temperature of the high-pressure sensor and the ambient temperature, the gear of the fan is adjusted for the first time;
after the first adjustment, under the condition that the difference value between the temperature of the high-pressure sensor and the ambient temperature meets the preset condition, the gear of the fan is subjected to second adjustment according to the current of the compressor.
In one embodiment, prior to acquiring the high pressure sensor temperature and the ambient temperature, the method comprises:
responding to a received fan starting request, and acquiring an ambient temperature;
determining an initial gear corresponding to the ambient temperature according to the ambient temperature;
and controlling the fan to operate at the initial gear.
In one embodiment, the preset conditions include: the duration that the difference between the high-pressure sensor temperature and the ambient temperature is between the maximum difference and the minimum difference corresponding to the current gear reaches a first preset duration.
In one embodiment, the first adjusting of the gear of the fan according to the difference between the temperature of the high pressure sensor and the ambient temperature includes:
when the difference is larger than the maximum difference corresponding to the current gear and the duration time reaches a second preset time length, increasing the gear of the fan;
and under the condition that the difference is smaller than the minimum difference corresponding to the current gear and the duration time reaches a third preset time length, the gear of the fan is lowered.
In one embodiment, the second adjusting of the gear of the fan based on the compressor current comprises:
calculating the average variance of the instantaneous values of the currents according to the instantaneous values of the plurality of groups of compressor currents;
under the condition that the average variance of the current instantaneous value is larger than the maximum average variance, maintaining the current gear unchanged;
and under the condition that the average variance of the current instantaneous value is less than or equal to the maximum average variance, adjusting the gear of the fan according to the average current difference of the compressor.
In one embodiment, adjusting the fan gear according to the average current difference of the compressor comprises:
in the case that the average current difference of the compressors is smaller than a first threshold value, the gear is lowered;
when the average current difference of the compressors is larger than a second threshold value, the gears are adjusted to be high;
and maintaining the current gear unchanged under the condition that the average current difference of the compressor is greater than or equal to the first threshold and less than or equal to the second threshold.
The embodiment of the invention also provides a fan gear adjusting device to achieve the purposes of reducing the running energy consumption of the fan and improving the adjusting precision, and the device comprises:
the first acquisition module is used for acquiring the temperature of the high-voltage sensor and the ambient temperature;
the first adjusting module is used for performing first adjustment on the gear of the fan according to the difference value between the temperature of the high-pressure sensor and the ambient temperature;
and the second adjusting module is used for performing second adjustment on the gear of the fan according to the current of the compressor under the condition that the difference value between the temperature of the high-pressure sensor and the ambient temperature meets the preset condition after the first adjustment.
In one embodiment, the above apparatus further comprises:
the second acquisition module is used for responding to the received fan starting request and acquiring the ambient temperature before acquiring the temperature of the high-pressure sensor and the ambient temperature;
the determining module is used for determining an initial gear corresponding to the environment temperature according to the environment temperature;
and the control module is used for controlling the fan to operate at the initial gear.
In one embodiment, the preset conditions include: the duration that the difference between the high-pressure sensor temperature and the ambient temperature is between the maximum difference and the minimum difference corresponding to the current gear reaches a first preset duration.
In one embodiment, the first adjustment module comprises:
the first adjusting unit is used for increasing the gear of the fan under the condition that the difference is larger than the maximum difference corresponding to the current gear and the duration time reaches a second preset time length;
and the second adjusting unit is used for reducing the gear of the fan under the condition that the difference is smaller than the minimum difference corresponding to the current gear and the duration time reaches a third preset time length.
In one embodiment, the second adjustment module comprises:
the calculating unit is used for calculating the average variance of the current instantaneous values according to the instantaneous values of the plurality of groups of compressor currents;
the maintaining unit is used for maintaining the current gear unchanged under the condition that the average variance of the current instantaneous value is greater than the maximum average variance;
and the adjusting unit is used for adjusting the gear of the fan according to the average current difference of the compressor under the condition that the average variance of the current instantaneous value is less than or equal to the maximum average variance.
In one embodiment, the adjusting unit includes:
the lowering subunit is used for lowering the gear under the condition that the average current difference of the compressor is smaller than a first threshold value;
the heightening subunit is used for heightening the gear under the condition that the average current difference of the compressors is larger than a second threshold value;
and the maintaining subunit is used for maintaining the current gear unchanged when the average current difference of the compressor is greater than or equal to the first threshold and less than or equal to the second threshold.
In the above embodiment, the gear of the fan is coarsely adjusted by the difference between the temperature of the high-pressure sensor and the ambient temperature, and the gear of the fan is further finely adjusted by the difference between the temperature of the high-pressure sensor and the ambient temperature. In the embodiment, the control precision of the gear of the fan is improved, so that the running energy consumption of the fan is reduced, and the running energy saving performance of the fan and the running energy efficiency ratio of the whole fan are improved.
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 method flow diagram of a method of adjusting a gear of a wind turbine according to an embodiment of the present disclosure;
FIG. 2 is another method flow diagram of a fan gear adjustment method according to an embodiment of the present disclosure;
fig. 3 is a block diagram of a fan gear adjustment device 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 gear of the fan can be accurately adjusted according to the change of the outdoor environment temperature, so that stable pressure can be kept when the unit operates, the noise of the unit during operation is reduced to the maximum extent, the energy-saving performance of the fan operation is improved, and the power consumption of the unit during operation is reduced.
In this example, a method for adjusting a gear of a fan is provided, as shown in fig. 1, and may include the following steps:
step 101: acquiring the temperature of a high-pressure sensor and the ambient temperature;
step 102: according to the difference value between the temperature of the high-pressure sensor and the ambient temperature, the gear of the fan is adjusted for the first time;
step 103: after the first adjustment, under the condition that the difference value between the temperature of the high-pressure sensor and the ambient temperature meets the preset condition, the gear of the fan is subjected to second adjustment according to the current of the compressor.
In the above example, the gear of the fan is coarsely adjusted through the difference between the temperature of the high-pressure sensor and the ambient temperature, and the gear of the fan is further finely adjusted through the difference between the temperature of the high-pressure sensor and the ambient temperature. The control precision of the fan gears is improved, the running energy consumption of the fan is reduced, and the running energy saving performance of the fan and the running energy efficiency ratio of the whole machine are improved.
Considering that different environmental temperatures can correspond to different initial gears, the fan needs to be started before the compressor is started, after the fan is started, the fan can be kept running for a preset time (for example: 1.0min) at the initial gear, and then the fan gear control can be started. Specifically, before acquiring the temperature of the high-pressure sensor and the ambient temperature, the method may further include:
s1: responding to a received fan starting request, and acquiring an ambient temperature;
s2: determining an initial gear corresponding to the ambient temperature according to the ambient temperature;
s3: and controlling the fan to operate at the initial gear.
As shown in table 1 below, the initial gear corresponding to the ambient temperature, and the maximum difference and the minimum difference may be set as follows:
TABLE 1
The preset conditions may include: the duration that the difference between the high-pressure sensor temperature and the ambient temperature is between the maximum difference and the minimum difference corresponding to the current gear reaches a first preset duration.
Specifically, based on table 1, according to the difference between the temperature of the high pressure sensor and the ambient temperature, the first adjustment is performed on the gear of the fan, which may include:
1) when the difference is larger than the maximum difference corresponding to the current gear and the duration time reaches a second preset time length, increasing the gear of the fan;
2) and under the condition that the difference is smaller than the minimum difference corresponding to the current gear and the duration time reaches a third preset time length, the gear of the fan is lowered.
The second preset time length, the third preset time length and the like can be set according to actual needs, and specifically set numerical values can be selected according to conditions, which is not limited in the present application.
In order to enable the gear to be adjusted more finely, the gear of the fan can be further adjusted secondarily according to the current of the compressor, and specifically, during adjustment, the gear can be further adjusted based on control indexes such as the current of the compressor, the average current and the variance of the average current. For example, it may include:
s1: calculating the average variance of the instantaneous values of the currents according to the instantaneous values of the plurality of groups of compressor currents;
s2: under the condition that the average variance of the current instantaneous value is larger than the maximum average variance, maintaining the current gear unchanged;
s3: and under the condition that the average variance of the current instantaneous value is less than or equal to the maximum average variance, adjusting the gear of the fan according to the average current difference of the compressor.
Wherein, adjust the fan gear according to the average current difference of compressor, can include:
1) in the case that the average current difference of the compressors is smaller than a first threshold value, the gear is lowered;
2) when the average current difference of the compressors is larger than a second threshold value, the gears are adjusted to be high;
3) and maintaining the current gear unchanged under the condition that the average current difference of the compressor is greater than or equal to the first threshold and less than or equal to the second threshold.
Namely, the gear of the fan is finely adjusted according to control parameters such as the current of the compressor, the average current, the variance of the average current and the like.
The above-mentioned air conditioner fan gear adjusting method is described below with reference to a specific embodiment, however, it should be noted that this specific embodiment is only for better describing the present application, and should not be construed as an undue limitation to the present application.
In this example, an accurate and efficient fan gear adjustment control method is provided, and specifically, by combining multiple control indexes such as ambient temperature, exhaust pressure, heat exchange temperature difference, compressor current, average current variance, and the like, an efficient and accurate fan operation gear is effectively judged according to a preset control logic, and the fan gear is accurately adjusted according to the change of outdoor ambient temperature, so that stable pressure can be kept during unit operation, noise during unit operation is reduced to the maximum extent, energy saving performance during fan operation is improved, and power consumption during unit operation is reduced. Specifically, the following control logic can be used for controlling:
the case of operating in the cooling mode, as shown in fig. 2, may include:
1) fan gear initialization adjustment control
The fan is started before the compressor is started, the fan keeps running for 1.0min at an initial gear after the compressor is started, and then the fan can enter a fan gear control mode.
2) Draught fan gear rough type adjusting control
After maintaining operation in the initial gear for 1.0min, the exhaust pressure may be detected as shown in table 2 below.
TABLE 2
Then, according to the exhaust pressure PExhaust of gasesCorresponding saturation temperature THigh pressureAdjust the fan gear, it is specific:
a, if 30min is continuously detected, △ TAmin≤△T≤△TAmaxAnd the fan gear enters a fine adjustment mode, wherein the rough adjustment operation heat exchange temperature difference (△ T) at the current environment temperature is equal to the temperature (T) of the high-pressure sensorHigh pressure) -ambient temperature (T)Environment(s));
B, if 1.0min is continuously detected, △ T is more than △ TAmaxIf so, the fan is shifted up by one gear at the current gear; after each gear is adjusted, the gear is maintained for 1.0min, and if the condition is still met, the gear can be adjusted to be higher until the fan runs to the highest gear;
c, if 1.0min is continuously detected, △ T is less than △ TAminIf so, the fan is shifted down by one gear at the current gear; after each gear is adjusted and maintained for 1.0min, if the condition is still met, the gear can be adjusted down again until the fan runs to the lowest gear.
3) Fine adjustment control for fan gear
Specifically, if 30min is continuously detected, △ TAmin≤△T≤△TAmaxThen the fan gear exits the coarse adjustment mode (i.e., the fan gear control does not receive the heat exchange temperature difference △ T)AControl command) entering a fine adjustment mode, and if 10min is continuously detected, △ T is less than △ TAminOr △ T > △ TAmaxIf the fan gear is in the fine adjustment mode, the fan gear is controlled to be in the rough adjustment mode;
the fine tuning control can be implemented according to the following logic:
fine adjustment control for determining meeting of fan gearUnder the conditions of system, the current of the compressor is continuously detected for 30s, and then the average value I is calculated1 averageAnd 15 sets of average variances S of instantaneous values of compressor currentsIaverage
If S isIaverage>SImean maxIf so, the fan keeps the current gear unchanged;
if S isIaverage≤SImean maxIf the current gear is lower than the current gear, the fan is adjusted to be lower by one gear, and then the current of the compressor is continuously detected for 30s again to calculate the average value I2 averageAnd 15 sets of average variances S of instantaneous values of compressor currentsIaverage
If △ I (average current difference of compressor) < m is detected, the fan is adjusted down by one gear at the current gear, the calculation is detected again, and the operation is repeated in a cyclic mode, wherein △ I is I1 average-I2 average
If the detection △ I is larger than n, the fan is lifted by one gear at the current gear, and the detection calculation is carried out again to circulate;
if m is detected to be less than or equal to △ I and less than or equal to n, the current gear of the fan is kept unchanged.
By the method, the problems of high energy consumption, high noise and poor control precision of the fan during operation can be solved, the control precision of the fan gears is improved, the constantly required air quantity is ensured, the stable operation pressure of the unit can be ensured, and the reliability is effectively improved. According to the required air quantity, the gear of the fan is reduced under the condition of meeting the performance and reliability requirements, and the running noise of the unit can be reduced to the greatest extent; the running energy consumption of the fan is reduced, the running energy conservation of the fan is improved, and the running energy efficiency ratio of the whole machine is improved.
In the embodiment, extensive adjustment is realized by adopting the control indexes of the constant-time heat exchange temperature difference of the exhaust pressure and the ambient temperature. And the fine adjustment is realized by innovatively adopting control indexes of compressor current, average current and average current variance. The running energy consumption of the fan is reduced, the gear control precision of the fan is improved, and the running energy saving performance of the fan and the running energy efficiency ratio of the whole machine are improved.
Based on the same inventive concept, the embodiment of the present invention further provides a fan gear adjusting device, as described in the following embodiments. Because the principle of solving the problems of the fan gear adjusting device is similar to the fan gear adjusting method, the fan gear adjusting device can be implemented by the fan gear adjusting method, and repeated parts are not repeated. 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 fan gear adjusting device according to an embodiment of the present invention, and as shown in fig. 3, the fan gear adjusting device may include: a first obtaining module 301, a first adjusting module 302, and a second adjusting module 303, and the structure thereof will be described below.
The first acquisition module 301 is used for acquiring the temperature of the high-voltage sensor and the ambient temperature;
the first adjusting module 302 is configured to perform first adjustment on the gear of the fan according to a difference between the temperature of the high-pressure sensor and the ambient temperature;
and the second adjusting module 303 is configured to perform second adjustment on the gear of the fan according to the current of the compressor after the first adjustment and under the condition that the difference between the temperature of the high-pressure sensor and the ambient temperature meets the preset condition.
In one embodiment, the apparatus may further include: the second acquisition module is used for responding to the received fan starting request and acquiring the ambient temperature before acquiring the temperature of the high-pressure sensor and the ambient temperature; the determining module is used for determining an initial gear corresponding to the environment temperature according to the environment temperature; and the control module is used for controlling the fan to operate at the initial gear.
In one embodiment, the preset condition may include: the duration that the difference between the high-pressure sensor temperature and the ambient temperature is between the maximum difference and the minimum difference corresponding to the current gear reaches a first preset duration.
In one embodiment, the first adjustment module 302 may include: the first adjusting unit is used for increasing the gear of the fan under the condition that the difference is larger than the maximum difference corresponding to the current gear and the duration time reaches a second preset time length; and the second adjusting unit is used for reducing the gear of the fan under the condition that the difference is smaller than the minimum difference corresponding to the current gear and the duration time reaches a third preset time length.
In one embodiment, the second adjusting module 303 may include: the calculating unit is used for calculating the average variance of the current instantaneous values according to the instantaneous values of the plurality of groups of compressor currents; the maintaining unit is used for maintaining the current gear unchanged under the condition that the average variance of the current instantaneous value is greater than the maximum average variance; and the adjusting unit is used for adjusting the gear of the fan according to the average current difference of the compressor under the condition that the average variance of the current instantaneous value is less than or equal to the maximum average variance.
In one embodiment, the adjusting unit may include: the lowering subunit is used for lowering the gear under the condition that the average current difference of the compressor is smaller than a first threshold value; the heightening subunit is used for heightening the gear under the condition that the average current difference of the compressors is larger than a second threshold value; and the maintaining subunit is used for maintaining the current gear unchanged when the average current difference of the compressor is greater than or equal to the first threshold and less than or equal to the second threshold.
In another embodiment, a software is provided, which is used to execute the technical solutions described in the above embodiments and preferred embodiments.
In another embodiment, a storage medium is provided, in which the software is stored, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
From the above description, it can be seen that the embodiments of the present invention achieve the following technical effects: the gear of the fan is coarsely adjusted through the difference value between the temperature of the high-pressure sensor and the ambient temperature, and the gear of the fan is further finely adjusted through the difference value between the temperature of the high-pressure sensor and the ambient temperature. By the mode, the running energy consumption of the fan is reduced, the gear control precision of the fan is improved, and the energy conservation of the running of the fan and the running energy efficiency ratio of the whole fan are improved.
It will be apparent to those skilled in the art that the modules or steps of the embodiments of the invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A fan gear adjusting method is characterized by comprising the following steps:
acquiring the temperature of a high-pressure sensor and the ambient temperature;
according to the difference value between the temperature of the high-pressure sensor and the ambient temperature, the gear of the fan is adjusted for the first time;
after the first adjustment, under the condition that the difference value between the temperature of the high-pressure sensor and the ambient temperature meets a preset condition, performing second adjustment on the gear of the fan according to the current of the compressor;
second adjusting the gear of the fan according to the current of the compressor comprises:
calculating the average variance of the instantaneous values of the currents according to the instantaneous values of the plurality of groups of compressor currents; under the condition that the average variance of the current instantaneous value is larger than the maximum average variance, maintaining the current gear unchanged; and under the condition that the average variance of the current instantaneous value is less than or equal to the maximum average variance, adjusting the gear of the fan according to the average current difference of the compressor.
2. The method of claim 1, wherein prior to acquiring the high pressure sensor temperature and the ambient temperature, the method comprises:
responding to a received fan starting request, and acquiring an ambient temperature;
determining an initial gear corresponding to the ambient temperature according to the ambient temperature;
and controlling the fan to operate at the initial gear.
3. The method according to claim 1, wherein the preset condition comprises: the duration that the difference between the high-pressure sensor temperature and the ambient temperature is between the maximum difference and the minimum difference corresponding to the current gear reaches a first preset duration.
4. The method of claim 1, wherein the first adjusting the gear of the fan based on the difference between the high pressure sensor temperature and the ambient temperature comprises:
when the difference is larger than the maximum difference corresponding to the current gear and the duration time reaches a second preset time length, increasing the gear of the fan;
and under the condition that the difference is smaller than the minimum difference corresponding to the current gear and the duration time reaches a third preset time length, the gear of the fan is lowered.
5. The method of claim 1, wherein adjusting the fan gear based on the compressor average current difference comprises:
in the case that the average current difference of the compressors is smaller than a first threshold value, the gear is lowered;
when the average current difference of the compressors is larger than a second threshold value, the gears are adjusted to be high;
and maintaining the current gear unchanged under the condition that the average current difference of the compressor is greater than or equal to the first threshold and less than or equal to the second threshold.
6. The utility model provides a fan gear adjusting device which characterized in that includes:
the first acquisition module is used for acquiring the temperature of the high-voltage sensor and the ambient temperature;
the first adjusting module is used for performing first adjustment on the gear of the fan according to the difference value between the temperature of the high-pressure sensor and the ambient temperature;
the second adjusting module is used for performing second adjustment on the gear of the fan according to the current of the compressor under the condition that the difference value between the temperature of the high-pressure sensor and the ambient temperature meets the preset condition after the first adjustment;
the second adjustment module includes:
the calculating unit is used for calculating the average variance of the current instantaneous values according to the instantaneous values of the plurality of groups of compressor currents;
the maintaining unit is used for maintaining the current gear unchanged under the condition that the average variance of the current instantaneous value is greater than the maximum average variance;
and the adjusting unit is used for adjusting the gear of the fan according to the average current difference of the compressor under the condition that the average variance of the current instantaneous value is less than or equal to the maximum average variance.
7. The apparatus of claim 6, further comprising:
the second acquisition module is used for responding to the received fan starting request and acquiring the ambient temperature before acquiring the temperature of the high-pressure sensor and the ambient temperature;
the determining module is used for determining an initial gear corresponding to the environment temperature according to the environment temperature;
and the control module is used for controlling the fan to operate at the initial gear.
8. The apparatus of claim 6, wherein the preset condition comprises: the duration that the difference between the high-pressure sensor temperature and the ambient temperature is between the maximum difference and the minimum difference corresponding to the current gear reaches a first preset duration.
9. The apparatus of claim 6, wherein the first adjustment module comprises:
the first adjusting unit is used for increasing the gear of the fan under the condition that the difference is larger than the maximum difference corresponding to the current gear and the duration time reaches a second preset time length;
and the second adjusting unit is used for reducing the gear of the fan under the condition that the difference is smaller than the minimum difference corresponding to the current gear and the duration time reaches a third preset time length.
10. The apparatus of claim 6, wherein the adjusting unit comprises:
the lowering subunit is used for lowering the gear under the condition that the average current difference of the compressor is smaller than a first threshold value;
the heightening subunit is used for heightening the gear under the condition that the average current difference of the compressors is larger than a second threshold value;
and the maintaining subunit is used for maintaining the current gear unchanged when the average current difference of the compressor is greater than or equal to the first threshold and less than or equal to the second threshold.
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