CN113915917B - Refrigerator, variable frequency compressor and control method of variable frequency compressor - Google Patents

Refrigerator, variable frequency compressor and control method of variable frequency compressor Download PDF

Info

Publication number
CN113915917B
CN113915917B CN202110390242.6A CN202110390242A CN113915917B CN 113915917 B CN113915917 B CN 113915917B CN 202110390242 A CN202110390242 A CN 202110390242A CN 113915917 B CN113915917 B CN 113915917B
Authority
CN
China
Prior art keywords
average
stop
variable frequency
rotation speed
frequency compressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110390242.6A
Other languages
Chinese (zh)
Other versions
CN113915917A (en
Inventor
彭洪祥
李传金
孙彬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Refrigerator Co Ltd
Original Assignee
Hisense Refrigerator Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hisense Refrigerator Co Ltd filed Critical Hisense Refrigerator Co Ltd
Priority to CN202110390242.6A priority Critical patent/CN113915917B/en
Publication of CN113915917A publication Critical patent/CN113915917A/en
Application granted granted Critical
Publication of CN113915917B publication Critical patent/CN113915917B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/02—Timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a refrigerator, comprising: refrigerator box, inverter compressor and controller, the controller is used for: responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable frequency compressor; n is more than or equal to 1; when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period; when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period. The invention also discloses a variable frequency compressor and a control method thereof. The invention can effectively reduce the energy consumption of the variable frequency compressor, reduce noise and improve the refrigeration efficiency.

Description

Refrigerator, variable frequency compressor and control method of variable frequency compressor
Technical Field
The invention relates to a refrigerator control technology, in particular to a refrigerator, a variable frequency compressor and a control method thereof.
Background
The variable frequency compressor has the advantages of energy saving, low noise and the like, and refrigerator products with the variable frequency compressor are accepted by consumers. The rotational speed design of a variable frequency compressor is generally determined according to the ambient temperature and the set gear. The compressors with different discharge capacities have different refrigerating capacities at the same rotating speed, so that different rotating speed meters and control programs are required to be formulated according to the application conditions of each compressor and each box body when the compressors are matched with different compressors, and the difficulty of development and production is increased.
In addition, in order to avoid the risk that the matching is imperfect and cannot be found in the test process under some working conditions because the test working conditions defined by the national standard are fewer, the rotating speed is generally selected to be larger when the rotating speed meter of the compressor is manufactured, which leads to high noise and energy consumption than the standard value under many conditions, and causes high noise, energy waste or low refrigeration efficiency.
Disclosure of Invention
The embodiment of the invention aims to provide a refrigerator, a variable frequency compressor and a control method thereof, which can effectively reduce the energy consumption of the variable frequency compressor, reduce noise, improve refrigeration efficiency and reduce the production cost of the whole refrigerator.
To achieve the above object, an embodiment of the present invention provides a refrigerator including:
A refrigerator body;
the variable frequency compressor is arranged in the refrigerator body;
and the controller is electrically connected with the variable frequency compressor and is used for:
responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable frequency compressor; n is more than or equal to 1;
when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period;
when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period.
As an improvement of the above solution, when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods, and the average start rotation speed, specifically including:
when the average running rate is smaller than the lower limit value of the preset target running rate range, the average starting rotating speed is adjusted downwards according to the target running rate range and the average running rate of the first N start-stop periods, so that the adjusted rotating speed is obtained;
And when the average running rate is larger than the upper limit value of the preset target running rate range, the average starting rotating speed is adjusted upwards according to the target running rate range and the average running rate of the first N start-stop periods, so that the adjusted rotating speed is obtained.
As an improvement of the above solution, when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods, and the average start rotation speed, specifically including:
when the average running rate is out of the preset target running rate range, calculating the adjusted rotating speed according to the target running rate range, the average running rate of the first N start-stop periods and the average starting rotating speed by the following calculation formula:
Figure BDA0003016469910000021
Figure BDA0003016469910000022
wherein rpm is N+1 For the adjusted rotation speed, rpm is the average starting rotation speed of the first N start-stop periods, eta is the average running rate of the first N start-stop periods, [ eta ] min ,η max ]The preset target operation rate range is set; m is a preset exponential factor, m>0。
As an improvement of the above solution, the calculating, in response to a preset compressor rotation speed adjustment command, an average operation rate and an average starting rotation speed of the first N start-stop cycles of the inverter compressor specifically includes:
Responding to a preset compressor rotating speed adjusting instruction, and acquiring the operating rate and the starting rotating speed corresponding to the first N start-stop periods of the variable frequency compressor;
according to each operation rate and each starting rotation speed corresponding to the first N start-stop periods of the variable frequency compressor, calculating the average operation rate and the average starting rotation speed of the first N start-stop periods of the variable frequency compressor through the following calculation formula;
Figure BDA0003016469910000031
Figure BDA0003016469910000032
wherein eta is the average running rate of the first N start-stop periods, rpm is the average starting rotation speed of the first N start-stop periods, eta i For the operation rate corresponding to the ith start-stop period, rpm i I=1, 2, …, N for the start rotation speed corresponding to the i-th start-stop period.
As an improvement of the above, before the calculating of the average operation rate and the average start-up rotation speed of the first N start-stop cycles of the inverter compressor in response to a preset compressor rotation speed adjustment command, the controller is further configured to:
calculating the starting rotation speed and the operation rate corresponding to N start-stop periods after the start-stop period of the variable frequency compressor which is electrified for the first time, and controlling the variable frequency compressor to start to operate at the corresponding starting rotation speed under the start-stop period;
the starting rotation speed of the first start-stop period in the N start-stop periods after the first power-on start-stop period of the variable frequency compressor is a preset basic rotation speed; the starting rotation speed of the (i+1) th start-stop period is calculated according to the operation rate and the starting rotation speed of the (i) th start-stop period, i=1, 2, …, N.
As an improvement of the above-mentioned scheme, according to the target operation rate range, the operation rate and the starting rotation speed of the i-th start-stop period, the starting rotation speed of the i+1th start-stop period is calculated by the following calculation formula:
Figure BDA0003016469910000041
/>
Figure BDA0003016469910000042
wherein rpm is i+1 Rpm for the start-up rotation speed of the (i+1) th start-stop period i For the start-up rotational speed, η of the i-th start-stop period i For the operation rate of the ith start-stop period, [ eta ] min ,η max ]I=1, 2, …, N for the target operating rate range; n is a preset exponential factor, n>0。
As an improvement of the above solution, the calculating the operation rate corresponding to N start-stop periods after the start-stop period of the first power-on of the inverter compressor specifically includes:
acquiring the starting time and the stopping time of the variable frequency compressor in N starting and stopping periods after the first power-on starting and stopping period;
according to the starting time and the stopping time, calculating the operation rates corresponding to N starting and stopping periods after the starting and stopping period of the variable frequency compressor which is electrified for the first time through the following calculation formulas:
Figure BDA0003016469910000043
wherein eta i For the operation rate corresponding to the ith start-stop period, ton i For the start-up time length of the ith start-stop period, toff i I=1, 2, …, N, which is the stop time length of the i-th on-off period.
As an improvement of the above, the controller is further configured to:
and in N start-stop periods after the start-stop period of the variable frequency compressor which is electrified for the first time, if the continuous operation time of the variable frequency compressor is detected to exceed a first preset time length, after the first preset time length, the rotating speed of the variable frequency compressor is increased by a preset rotating speed adjustment step length and every second preset time length until the rotating speed of the variable frequency compressor reaches a preset highest rotating speed or the variable frequency compressor is in a stop state.
The embodiment of the invention also provides a variable frequency compressor, which comprises:
a body of the variable frequency compressor;
and the controller is electrically connected with the body of the variable frequency compressor and is used for:
responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable frequency compressor; n is more than or equal to 1;
when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period;
when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period.
The embodiment of the invention also provides a control method of the variable frequency compressor, which comprises the following steps:
responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable frequency compressor; n is more than or equal to 1;
when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period;
when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period.
Compared with the prior art, the refrigerator, the variable frequency compressor and the control method thereof disclosed by the invention are used for executing the rotation speed adjustment of the variable frequency compressor by arranging the controller. Responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable frequency compressor; when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period; when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period. By adopting the technical means of the embodiment of the invention, after the preset compressor rotating speed adjusting instruction is triggered, the controller acquires the operating parameters of the first N start-stop periods of the current start-stop period in real time so as to calculate the starting rotating speed of the variable frequency compressor in the current start-stop period, thereby realizing the real-time adjustment of the starting rotating speed of each start-stop period of the variable frequency compressor and effectively ensuring that the variable frequency compressor obtains the optimal operating rotating speed in each start-stop period. Under the rotation speed adjusting method, the rotation speed of the variable frequency compressor is well matched with the thermal load under all environment temperatures and gear positions, so that the variable frequency compressor can operate efficiently, and is low in energy consumption and low in noise. In addition, according to the scheme, different tachometers and control programs do not need to be formulated according to different refrigerator bodies and specific compressor models, and the production cost is effectively reduced.
Drawings
Fig. 1 is a schematic view of a refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic workflow diagram of a controller in a refrigerator according to a first embodiment of the present invention;
fig. 3 is a schematic workflow diagram of a controller in a refrigerator according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a variable frequency compressor according to a third embodiment of the present invention;
fig. 5 is a schematic step flow diagram of a control method of a variable frequency compressor according to a fourth embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, fig. 1 is a schematic structural view of a refrigerator according to a first embodiment of the present invention; fig. 2 is a schematic workflow diagram of a controller in a refrigerator according to an embodiment of the invention. An embodiment of the present invention provides a refrigerator 10, including:
A refrigerator body 11;
the variable frequency compressor 12 is arranged inside the refrigerator body 11;
a controller 13, connected to the inverter compressor 12, for:
s11, responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable-frequency compressor; n is more than or equal to 1;
s12, when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period;
and S13, when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period.
It should be noted that, the on-off period of the variable frequency compressor refers to the sum of the time length of one start and the time length of stop of the variable frequency compressor, that is, the time length of the variable frequency compressor from the current start time to the next start time. It will be appreciated that in embodiments of the present invention, the on-time and off-time of different on-off periods are not necessarily equal.
The adjustment of the rotating speed of the variable frequency compressor occurs at the end of the last start-stop period and at the beginning of the current start-stop period, namely, the adjustment of the rotating speed of the variable frequency compressor is carried out after the variable frequency compressor is stopped and before the next start-up.
In the embodiment of the present invention, the preset compressor rotation speed adjustment command needs to be triggered after at least N start-stop cycles are run after the start-stop cycle of the first power-on of the inverter compressor. In response to a preset compressor rotation speed adjustment instruction, calculating average running rate eta and average starting rotation speed rpm of N start-stop periods before the current start-stop period of the variable frequency compressor, and further according to the average running rate eta and average starting rotation speed rpm of the N start-stop periods and a preset target running rate range eta min ,η max ]And adjusting the starting rotating speed of the current start-stop period of the variable frequency compressor.
The value of N may be set according to the actual situation, for example, 5 on/off cycles, and the like, and is not particularly limited herein.
Specifically, step S11 is specifically performed by labeling at S111 and S112:
s111, responding to a preset compressor rotating speed adjusting instruction, and acquiring the operating rate and the starting rotating speed corresponding to the first N start-stop periods of the variable-frequency compressor;
S112, calculating the average running rate and the average starting rotating speed of the first N start-stop periods of the variable-frequency compressor according to each running rate and each starting rotating speed corresponding to the first N start-stop periods of the variable-frequency compressor by the following calculation formula;
Figure BDA0003016469910000081
Figure BDA0003016469910000082
wherein eta is the average running rate of the first N start-stop periods, rpm is the average starting rotation speed of the first N start-stop periods, eta i For the ith on-off periodOperating rate, rpm i I=1, 2, …, N for the start rotation speed corresponding to the i-th start-stop period.
In the embodiment of the invention, after the preset compressor rotating speed adjusting instruction is triggered, the controller obtains the operating rates and the starting rotating speeds corresponding to N starting and stopping periods forward to the current starting and stopping period, averages the operating rates and the starting rotating speeds, calculates the average operating rate eta and the average starting rotating speed rpm of the first N starting and stopping periods, and further adjusts the starting rotating speed of the current starting and stopping period.
When the average operation rate eta satisfies eta min ≤η≤η max And when the starting rotating speed corresponding to the average operating rate is indicated to be the proper starting rotating speed of the variable frequency compressor in the current operating state, so that the variable frequency compressor is controlled to start operating at the average starting rotating speed rpm in the current start-stop period.
The target operation rate range may be set based on human experience, for example, a sufficiently large operation rate value η is set 0 And calculates the running rate value eta 0 80% of the target operation rate range as a lower limit value η of the target operation rate range min Calculating the running rate value eta 0 90% of the target operation rate range as an upper limit value η of the target operation rate range max 。
By adopting the technical means of the embodiment of the invention, the target operation rate of the variable frequency compressor is set as a range, and when the average operation rate is calculated to be in the range, the corresponding average starting rotation speed is used as the starting rotation speed of the variable frequency compressor in the current starting and stopping period, so that the variable frequency compressor can be prevented from greatly regulating the rotation speed in each starting and stopping period, thereby being beneficial to the temperature control stability of the refrigerator.
When the average operation rate eta satisfies eta<η min Or eta>η max When the starting rotation speed corresponding to the average operation rate is not in accordance with the proper starting rotation speed of the variable frequency compressor in the current operation state, the temperature storage requirement of the refrigerator may not be optimally met, or the power consumption is overlarge, the noise is overlarge, and the like, so that corresponding adjustment is needed. According to the target operation rate range [ eta ] min ,η max ]And calculating the average running speed eta and the average starting rotating speed rpm of the first N start-stop periods, and controlling the variable frequency compressor to start running at the adjusted rotating speed under the current start-stop period.
As a preferred embodiment, step S13 is specifically performed by steps S131 to S132:
s131, when the average operation rate is smaller than the lower limit value eta of the preset target operation rate range min And when the speed is lower than the target running speed range, the average starting speed is adjusted according to the target running speed range and the average running speed of the first N start-stop periods, and the adjusted speed is obtained.
S132, when the average operation rate is greater than the upper limit value eta of the preset target operation rate range max And when the starting speed is adjusted, the average starting speed is adjusted upwards according to the target operation rate range and the average operation rate of the first N start-stop periods, so that the adjusted speed is obtained.
Specifically, the operation rate of the inverter compressor is inversely related to the rotation speed, and therefore, when the average operation rate η<η min And calculating a first adjustment proportion according to the target operation rate range and the average operation rate of the first N start-stop periods, and calculating an adjusted rotating speed according to the first adjustment proportion and the average starting rotating speed so that the adjusted rotating speed is smaller than the average starting rotating speed. And when the average operating rate eta >η max And calculating a second adjustment proportion according to the target operation rate range and the average operation rate of the first N start-stop periods, and calculating an adjusted rotating speed according to the second adjustment proportion and the average starting rotating speed so that the adjusted rotating speed is larger than the average starting rotating speed.
As a more preferred embodiment, the step S13 specifically includes:
when the average running rate is out of the preset target running rate range, calculating the adjusted rotating speed according to the target running rate range, the average running rate of the first N start-stop periods and the average starting rotating speed by the following calculation formula:
Figure BDA0003016469910000091
Figure BDA0003016469910000092
wherein rpm is N+1 For the adjusted rotation speed, rpm is the average starting rotation speed of the first N start-stop periods, eta is the average running rate of the first N start-stop periods, [ eta ] min ，η max ]The preset target operation rate range is set; m is a preset exponential factor, m>0。
It should be noted that, the exponent factor m may be set according to practical situations, and when m takes a value between 0 and 1, the time for adjusting the operation rotation speed of the inverter compressor to the final reasonable rotation speed is slower, but is more stable. When m takes a value greater than 1, the time to adjust the operating speed of the inverter compressor to the final reasonable speed is faster, but diverges easily.
Preferably, the exponent factor m=1. The embodiments of the present invention are illustrated with m=1:
according to the preset target operation rate range [ eta ] min ，η max ]Calculating a target operation rate eta ′ And calculating the adjustment proportion of the variable frequency compressor according to the ratio of the average operation rate to the target operation rate
Figure BDA0003016469910000101
And calculating the adjusted rotating speed of the variable frequency compressor according to the adjustment proportion and the average starting rotating speed to obtain the starting rotating speed of the variable frequency compressor in the current start-stop period.
According to the calculation formula of the adjusted rotating speed, when eta<η min When the ratio is adjusted
Figure BDA0003016469910000102
The adjusted rotational speed will be adjusted downwards; when eta>η max In the case of said adjustment ratio->
Figure BDA0003016469910000103
The adjusted rotational speed will be adjusted upwards.
The first embodiment of the invention provides a refrigerator, which is used for executing the rotation speed adjustment of a variable frequency compressor in the refrigerator by arranging a controller. Responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable frequency compressor; when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period; when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period. By adopting the technical means of the embodiment of the invention, after the preset compressor rotating speed adjusting instruction is triggered, the controller acquires the operating parameters of the first N start-stop periods of the current start-stop period in real time so as to calculate the starting rotating speed of the variable frequency compressor in the current start-stop period, thereby realizing the real-time adjustment of the starting rotating speed of each start-stop period of the variable frequency compressor and effectively ensuring that the variable frequency compressor obtains the optimal operating rotating speed in each start-stop period. Under the rotation speed adjusting method, the rotation speed of the variable frequency compressor is well matched with the thermal load under all environment temperatures and gear positions, so that the variable frequency compressor can operate efficiently, and is low in energy consumption and low in noise. In addition, according to the scheme, different tachometers and control programs do not need to be formulated according to different refrigerator bodies and specific compressor models, and the production cost is effectively reduced.
As a preferred embodiment, referring to fig. 3, a schematic workflow diagram of a controller in a refrigerator according to a second embodiment of the present invention is shown. The second embodiment of the present invention is further implemented on the basis of the first embodiment, and the controller 13 is configured to:
s21, calculating starting rotation speeds and operation rates corresponding to N start-stop periods after the first power-on start-stop period of the variable frequency compressor, and controlling the variable frequency compressor to start running at the corresponding starting rotation speeds under the start-stop period;
the starting rotation speed of the first start-stop period in the N start-stop periods after the first power-on start-stop period of the variable frequency compressor is a preset basic rotation speed; the starting rotation speed of the (i+1) th start-stop period is calculated according to the operation rate and the starting rotation speed of the (i) th start-stop period, i=1, 2, …, N.
S22, responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable-frequency compressor; n is more than or equal to 1;
s23, controlling the variable frequency compressor to start running at the average starting rotation speed under the current start-stop period when the average running rate is within a preset target running rate range;
And S24, when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period.
In the embodiment of the invention, after the variable frequency compressor is powered on for the first time, in order to enable the variable refrigerator to reach a proper running state relatively quickly, a preset highest rotating speed is adopted as a starting rotating speed of a start-stop period after the variable frequency compressor is powered on for the first time, and the variable frequency compressor is controlled to start to run.
And then, calculating the starting rotation speed and the operation rate corresponding to N start-stop periods after the start-stop period of the variable frequency compressor which is electrified for the first time, and controlling the variable frequency compressor to start operation at the corresponding starting rotation speed under the start-stop period. Wherein the starting rotation speed of the first start-stop period in the N start-stop periods is presetSet basic rotation speed rpm 0 The method comprises the steps of carrying out a first treatment on the surface of the The starting rotational speed of the second to the N-th start-stop periods is calculated according to the operation rate and the starting rotational speed of the last start-stop period.
The basic rotation speed rpm is 0 The setting may be performed according to the ambient temperature and the temperature gear of the refrigerator (i.e., the cooling requirement of the refrigerator), or may be performed according to the actual operation of the refrigerator, which is not particularly limited herein.
Taking n=5 as an example, the start-stop period after the variable frequency compressor is powered on for the first time is recorded as an initial start-stop period, and the initial start-stop period is not counted in the calculation of the N start-stop periods. The start-stop period after the initial start-stop period is recorded as a first start-stop period and a second start-stop period … …, and the start-up rotation speed of the initial start-stop period is a preset maximum rotation speed rpm max . In N start-stop periods after the initial start-stop period, the starting rotation speed rpm of the first start-stop period 1 By using preset basic rotation speed rpm 0 The method comprises the steps of carrying out a first treatment on the surface of the The starting rotation speed of the second start-stop period is based on the operation rate eta of the first start-stop period 1 And start-up rpm 1 Calculated and recorded as rpm 2 The method comprises the steps of carrying out a first treatment on the surface of the And the starting rotation speed of the third start-stop period is according to the operation rate eta of the second start-stop period 2 And start-up rpm 2 Calculated and recorded as rpm 3 The method comprises the steps of carrying out a first treatment on the surface of the And so on until the starting rotation speed rpm of the fifth start-stop period is calculated 5 And obtaining the starting rotating speed corresponding to the N=5 start-stop periods after the initial start-stop period after the variable frequency compressor is electrified for the first time.
Preferably, according to the target operation rate range [ eta ] min ,η max ]The operation rate and the starting rotation speed of the ith starting and stopping period are calculated by the following calculation formula:
Figure BDA0003016469910000121
Figure BDA0003016469910000122
wherein rpm is i+1 Rpm for the start-up rotation speed of the (i+1) th start-stop period i For the start-up rotational speed, η of the i-th start-stop period i For the operation rate of the ith start-stop period, [ eta ] min ,η max ]I=1, 2, …, N for the target operating rate range; n is a preset exponential factor, n>0。
Preferably, the exponent factor n=1. The embodiments of the present invention are described with n=1:
for N start-stop periods after the initial start-stop period after the variable frequency compressor is powered on for the first time, according to the preset target operation rate range [ eta ] min ,η max ]Calculating a target operation rate eta' and according to the operation rate eta of the last start-stop period i And the ratio of the target operation rate eta', calculating the adjustment ratio of the variable frequency compressor
Figure BDA0003016469910000131
Thereby according to said adjustment ratio +.>
Figure BDA0003016469910000132
And the starting rotational speed rpm of the last start-stop period i Calculating to obtain the starting rotation speed rpm of the current start-stop period of the variable frequency compressor i+1 。
By adopting the technical means of the embodiment of the invention, for N start-stop periods after the initial start-stop period after the first power-on of the variable frequency compressor, the starting rotation speed of each start-stop period is properly adjusted according to the running condition of the last start-stop period, instead of adopting the same preset basic rotation speed as the starting rotation speed of the N start-stop periods, the data base can be more effectively provided for the rotation speed adjustment of the subsequent variable frequency compressor, so that the starting rotation speed of the variable frequency compressor after the rotation speed adjustment can reach the optimal value in each start-stop period, and the variable frequency compressor can efficiently run, and has lower energy consumption and lower noise.
Preferably, the calculating the operation rate corresponding to N start-stop cycles after the start-stop cycle of the first power-on of the variable frequency compressor specifically includes:
acquiring the starting time and the stopping time of the variable frequency compressor in N starting and stopping periods after the first power-on starting and stopping period;
according to the starting time and the stopping time, calculating the operation rates corresponding to N starting and stopping periods after the starting and stopping period of the variable frequency compressor which is electrified for the first time through the following calculation formulas:
Figure BDA0003016469910000133
wherein eta i For the operation rate corresponding to the ith start-stop period, ton i For the start-up time length of the ith start-stop period, toff i I=1, 2, …, N, which is the stop time length of the i-th on-off period.
In the embodiment of the invention, after the controller calculates the starting rotation speed and the running rate corresponding to N start-stop periods after the first power-on start-stop period of the variable frequency compressor, the controller initially triggers the compressor rotation speed adjusting instruction in the (n+1) th start-stop period, calculates the corresponding average running rate eta and average starting rotation speed rpm according to the starting rotation speed and the running rate corresponding to the N start-stop periods, and further calculates the corresponding average running rate eta and average starting rotation speed rpm according to the average running rate eta and average starting rotation speed rpm of the N start-stop periods, and the preset target running rate range [ eta min ,η max ]And adjusting the starting rotating speed of the current start-stop period, namely the (n+1) th start-stop period, of the variable frequency compressor.
Taking n=5 as an example, in calculating the starting rotation speed of the sixth start-stop period, calculating an average operation rate η and an average starting rotation speed rpm according to the operation rates and the starting rotation speeds of the first to fifth start-stop periods, and calculating the starting rotation speed of the sixth start-stop period
Figure BDA0003016469910000141
Where rpm represents the average start-up rotational speed of the first to fifth start-up periods, and η represents the first to fifth start-up periodsIs used for the average operation rate of the (c).
Further, in the process of calculating the starting rotation speed of the seventh start-stop period, the average operation rate eta and the average starting rotation speed rpm are calculated according to the operation rates and the starting rotation speeds of the second to sixth start-stop periods, and the starting rotation speed of the seventh start-stop period is calculated
Figure BDA0003016469910000142
Here, rpm means an average start-up rotational speed of the second to sixth start-up periods, and η means an average running rate of the second to sixth start-up periods. And so on.
As a preferred embodiment, the controller 13 is further configured to:
and in N start-stop periods after the start-stop period of the variable frequency compressor which is electrified for the first time, if the continuous operation time of the variable frequency compressor is detected to exceed a first preset time length, after the first preset time length, the rotating speed of the variable frequency compressor is increased by a preset rotating speed adjustment step length and every second preset time length until the rotating speed of the variable frequency compressor reaches a preset highest rotating speed or the variable frequency compressor is in a stop state.
In the embodiment of the invention, in order to obtain the operation rate and the starting rotation speed corresponding to N start-stop periods after the first power-on start-stop period of the variable frequency compressor, the smooth progress of the N start-stop periods needs to be ensured, so that in order to avoid incapacity of calculating the operation rate due to no stop of the compressor caused by low starting rotation speed of the variable frequency compressor, the embodiment of the invention sets a protection mechanism, and in the N start-stop periods, if the condition that the first preset duration of continuous operation is not stopped exists, the variable frequency compressor is controlled to rise frequency every second preset duration until the highest rotation speed rpm is reached max Or the variable frequency compressor is stopped, namely the starting and stopping period is completed.
It should be noted that the first preset time period is longer than the second preset time period, and the first preset time period and the second preset time period may be specifically set according to actual situations. For example, the first preset time period is set to 90min.
In addition, in the embodiment of the invention, during defrosting of the refrigerator, the variable frequency compressor is in a stop state or runs at a preset fixed rotating speed, and the defrosting period is not counted in a start-stop period. When detecting that the refrigerator has the actions of being opened and closed, the variable frequency compressor operates at a preset maximum rotation speed during the opening period of the refrigerator, and the opening period is not counted into an on-off period.
As an example, assuming that the inverter compressor enters the defrosting phase in the i-th on-off period and the compressor is stopped, the on-off period after the end of the defrosting phase of the compressor is recorded as the i+1th on-off period.
As an example, assuming that the variable frequency compressor enters the defrosting stage in the ith start-stop period and the compressor operates at a preset fixed rotation speed, or there is a door opening action in the ith start-stop period, the duration of the defrosting stage and the door opening duration are not counted in the duration of the ith start-stop period.
By adopting the technical means of the embodiment of the invention, the rationality of adjusting the starting rotation speed of the variable frequency compressor can be effectively improved, the variable frequency compressor can be effectively ensured to obtain the optimal running rotation speed under each start-stop period, and the variable frequency compressor can be operated efficiently, and has lower energy consumption and lower noise.
Referring to fig. 4, a schematic structural diagram of a variable frequency compressor according to a third embodiment of the present invention is provided. It should be noted that, the inverter compressor provided in the third embodiment of the present invention may be applicable to various refrigeration devices, such as a refrigerator, a freezer, an air conditioner, etc., where the inverter compressor needs to be configured. The refrigerator with the inverter compressor is specifically described as an example in the present invention, but the present invention is not limited to the refrigerator.
A third embodiment of the present invention provides a variable frequency compressor 30, including:
a body 31 of the inverter compressor;
a controller 32 electrically connected to the body 31 of the inverter compressor, for:
s31, responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable-frequency compressor; n is more than or equal to 1;
specifically, responding to a preset compressor rotating speed adjusting instruction, and acquiring the operating rate and the starting rotating speed corresponding to the first N start-stop periods of the variable-frequency compressor;
according to each operation rate and each starting rotation speed corresponding to the first N start-stop periods of the variable frequency compressor, calculating the average operation rate and the average starting rotation speed of the first N start-stop periods of the variable frequency compressor through the following calculation formula;
Figure BDA0003016469910000161
Figure BDA0003016469910000162
wherein eta is the average running rate of the first N start-stop periods, rpm is the average starting rotation speed of the first N start-stop periods, eta i For the operation rate corresponding to the ith start-stop period, rpm i I=1, 2, …, N for the start rotation speed corresponding to the i-th start-stop period.
S32, when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period;
And S33, when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rates of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period.
Specifically, when the average running rate is smaller than the lower limit value of the preset target running rate range, the average starting rotation speed is adjusted downwards according to the target running rate range and the average running rate of the first N start-stop periods, so that the adjusted rotation speed is obtained;
and when the average running rate is larger than the upper limit value of the preset target running rate range, the average starting rotating speed is adjusted upwards according to the target running rate range and the average running rate of the first N start-stop periods, so that the adjusted rotating speed is obtained.
As a preferred embodiment, when the average operation rate is out of the preset target operation rate range, the adjusted rotation speed is calculated according to the target operation rate range, the average operation rate of the first N start-stop cycles, and the average start-up rotation speed by the following calculation formula:
Figure BDA0003016469910000171
Figure BDA0003016469910000172
Wherein rpm is N+1 For the adjusted rotation speed, rpm is the average starting rotation speed of the first N start-stop periods, eta is the average running rate of the first N start-stop periods, [ eta ] min ,η max ]The preset target operation rate range is set; m is a preset exponential factor, m>0。
Preferably, m=1.
As a preferred embodiment, prior to step S31, the controller 32 is further configured to:
calculating the starting rotation speed and the operation rate corresponding to N start-stop periods after the start-stop period of the variable frequency compressor which is electrified for the first time, and controlling the variable frequency compressor to start to operate at the corresponding starting rotation speed under the start-stop period;
the starting rotation speed of the first start-stop period in the N start-stop periods after the first power-on start-stop period of the variable frequency compressor is a preset basic rotation speed; the starting rotation speed of the (i+1) th start-stop period is calculated according to the operation rate and the starting rotation speed of the (i) th start-stop period, i=1, 2, …, N.
Preferably, according to the target operation rate range, the operation rate and the starting rotation speed of the ith start-stop period, the starting rotation speed of the (i+1) th start-stop period is calculated by the following calculation formula:
Figure BDA0003016469910000173
Figure BDA0003016469910000174
wherein rpm is i+1 Rpm for the start-up rotation speed of the (i+1) th start-stop period i For the start-up rotational speed, η of the i-th start-stop period i For the operation rate of the ith start-stop period, [ eta ] min ,η max ]I=1, 2, …, N for the target operating rate range; n is a preset exponential factor, n>0。
Preferably, n=1.
Preferably, the calculating the operation rate corresponding to N start-stop cycles after the start-stop cycle of the first power-on of the variable frequency compressor specifically includes:
acquiring the starting time and the stopping time of the variable frequency compressor in N starting and stopping periods after the first power-on starting and stopping period;
according to the starting time and the stopping time, calculating the operation rates corresponding to N starting and stopping periods after the starting and stopping period of the variable frequency compressor which is electrified for the first time through the following calculation formulas:
Figure BDA0003016469910000181
wherein eta i For the operation rate corresponding to the ith start-stop period, ton i For the start-up time length of the ith start-stop period, toff i I=1, 2, …, N, which is the stop time length of the i-th on-off period.
As a preferred embodiment, the controller 32 is further configured to:
and in N start-stop periods after the start-stop period of the variable frequency compressor which is electrified for the first time, if the continuous operation time of the variable frequency compressor is detected to exceed a first preset time length, after the first preset time length, the rotating speed of the variable frequency compressor is increased by a preset rotating speed adjustment step length and every second preset time length until the rotating speed of the variable frequency compressor reaches a preset highest rotating speed or the variable frequency compressor is in a stop state.
The third embodiment of the invention provides a variable frequency compressor, which is used for executing the rotation speed adjustment of the variable frequency compressor by arranging a controller. Responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable frequency compressor; when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period; when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period. By adopting the technical means of the embodiment of the invention, after the preset compressor rotating speed adjusting instruction is triggered, the controller acquires the operating parameters of the first N start-stop periods of the current start-stop period in real time so as to calculate the starting rotating speed of the variable frequency compressor in the current start-stop period, thereby realizing the real-time adjustment of the starting rotating speed of each start-stop period of the variable frequency compressor and effectively ensuring that the variable frequency compressor obtains the optimal operating rotating speed in each start-stop period. Under the rotation speed adjusting method, the rotation speed of the variable frequency compressor is well matched with the thermal load under all environment temperatures and gear positions, so that the variable frequency compressor can operate efficiently, and is low in energy consumption and low in noise. In addition, the scheme does not need to make different tachometers and control programs according to the box bodies of different refrigeration equipment and specific compressor models, and effectively reduces the production cost.
Referring to fig. 5, a flowchart of steps of a control method of a variable frequency compressor according to a fourth embodiment of the present invention is shown. The fourth embodiment of the present invention provides a control method for a variable frequency compressor, specifically, the method is performed through steps S41 to S43:
s41, responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable frequency compressor; n is more than or equal to 1;
s42, when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed in a current start-stop period;
and S43, when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rates of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period.
It should be noted that, the control method of the variable frequency compressor provided by the embodiment of the present invention is the same as the controller in the refrigerator provided by the first or second embodiment, or all the steps of the flow executed by the controller in the variable frequency compressor provided by the third embodiment, and the working principles and beneficial effects of the two are in one-to-one correspondence, so that the description is omitted.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-only memory (ROM), a random access memory (RandomAccessMemory, RAM), or the like.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.

Claims (9)

1. A refrigerator, comprising:
a refrigerator body;
the variable frequency compressor is arranged in the refrigerator body;
and the controller is electrically connected with the variable frequency compressor and is used for:
responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable frequency compressor; n is more than or equal to 1;
When the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period;
when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operation at the adjusted rotation speed under the current start-stop period;
when the average running rate is out of the preset target running rate range, calculating an adjusted running rate according to the target running rate range, the average running rate of the first N start-stop periods and the average starting speed, wherein the method specifically comprises the following steps:
when the average running rate is out of the preset target running rate range, calculating the adjusted rotating speed according to the target running rate range, the average running rate of the first N start-stop periods and the average starting rotating speed by the following calculation formula:
Figure FDA0004043631020000011
Figure FDA0004043631020000012
wherein rpm is N+1 For the adjusted rotation speed, rpm is the average starting rotation speed of the first N start-stop periods, eta is the average running rate of the first N start-stop periods, [ eta ] min ,η max ]The preset target operation rate range is set; m is a preset exponential factor, m>0。
2. The refrigerator of claim 1, wherein when the average operation rate is out of the preset target operation rate range, calculating the adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop cycles, and the average start-up rotation speed, comprises:
when the average running rate is smaller than the lower limit value of the preset target running rate range, the average starting rotating speed is adjusted downwards according to the target running rate range and the average running rate of the first N start-stop periods, so that the adjusted rotating speed is obtained;
and when the average running rate is larger than the upper limit value of the preset target running rate range, the average starting rotating speed is adjusted upwards according to the target running rate range and the average running rate of the first N start-stop periods, so that the adjusted rotating speed is obtained.
3. The refrigerator of claim 1, wherein the calculating the average operating rate and average starting rotational speed of the first N start-stop cycles of the inverter compressor in response to a preset compressor rotational speed adjustment command, specifically comprises:
Responding to a preset compressor rotating speed adjusting instruction, and acquiring the operating rate and the starting rotating speed corresponding to the first N start-stop periods of the variable frequency compressor;
according to each operation rate and each starting rotation speed corresponding to the first N start-stop periods of the variable frequency compressor, calculating the average operation rate and the average starting rotation speed of the first N start-stop periods of the variable frequency compressor through the following calculation formula;
Figure FDA0004043631020000021
Figure FDA0004043631020000022
wherein eta is the average running rate of the first N start-stop periods, rpm is the average starting rotation speed of the first N start-stop periods, eta i For the operation rate corresponding to the ith start-stop period, rpm i I=1, 2, …, N for the start rotation speed corresponding to the i-th start-stop period.
4. The refrigerator of any one of claims 1 to 3 wherein, prior to said calculating an average operating rate and an average start-up rotational speed of the first N start-stop cycles of the inverter compressor in response to a preset compressor rotational speed adjustment command, the controller is further configured to:
calculating the starting rotation speed and the operation rate corresponding to N start-stop periods after the start-stop period of the variable frequency compressor which is electrified for the first time, and controlling the variable frequency compressor to start to operate at the corresponding starting rotation speed under the start-stop period;
The starting rotation speed of the first start-stop period in the N start-stop periods after the first power-on start-stop period of the variable frequency compressor is a preset basic rotation speed; the starting rotation speed of the (i+1) th start-stop period is calculated according to the operation rate and the starting rotation speed of the (i) th start-stop period, i=1, 2, …, N.
5. The refrigerator of claim 4, wherein the i+1th start-stop cycle start-up rotation speed is calculated from the target operation rate range, the i-th start-stop cycle operation rate, and the start-up rotation speed by the following calculation formula:
Figure FDA0004043631020000031
Figure FDA0004043631020000032
wherein rpm is i+1 Rpm for the start-up rotation speed of the (i+1) th start-stop period i For the start-up rotational speed, η of the i-th start-stop period i For the operation rate of the ith start-stop period, [ eta ] min ,η max ]I=1, 2, …, N for the target operating rate range; n is a preset exponential factor, n>0。
6. The refrigerator of claim 4, wherein the calculating the operation rate of the inverter compressor corresponding to N on-off periods after the first power-on-off period specifically includes:
acquiring the starting time and the stopping time of the variable frequency compressor in N starting and stopping periods after the first power-on starting and stopping period;
according to the starting time and the stopping time, calculating the operation rates corresponding to N starting and stopping periods after the starting and stopping period of the variable frequency compressor which is electrified for the first time through the following calculation formulas:
Figure FDA0004043631020000041
Wherein eta i For the operation rate corresponding to the ith start-stop period, ton i For the start-up time length of the ith start-stop period, toff i I=1, 2, …, N, which is the stop time length of the i-th on-off period.
7. The refrigerator of claim 4, wherein the controller is further configured to:
and in N start-stop periods after the start-stop period of the variable frequency compressor which is electrified for the first time, if the continuous operation time of the variable frequency compressor is detected to exceed a first preset time length, after the first preset time length, the rotating speed of the variable frequency compressor is increased by a preset rotating speed adjustment step length and every second preset time length until the rotating speed of the variable frequency compressor reaches a preset highest rotating speed or the variable frequency compressor is in a stop state.
8. A variable frequency compressor, comprising:
a body of the variable frequency compressor;
and the controller is electrically connected with the body of the variable frequency compressor and is used for:
responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable frequency compressor; n is more than or equal to 1;
when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period;
When the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operating at the adjusted rotation speed under the current start-stop period;
when the average running rate is out of the preset target running rate range, calculating an adjusted running rate according to the target running rate range, the average running rate of the first N start-stop periods and the average starting speed, wherein the method specifically comprises the following steps:
when the average running rate is out of the preset target running rate range, calculating the adjusted rotating speed according to the target running rate range, the average running rate of the first N start-stop periods and the average starting rotating speed by the following calculation formula:
Figure FDA0004043631020000051
Figure FDA0004043631020000052
wherein rpm is N+1 For the adjusted rotation speed, rpm is the average starting rotation speed of the first N start-stop periods, eta is the average running rate of the first N start-stop periods, [ eta ] min ,η max ]The preset target operation rate range is set; m is a preset exponential factor, m>0。
9. A control method of a variable frequency compressor, comprising:
Responding to a preset compressor rotating speed adjusting instruction, and calculating the average operating rate and the average starting rotating speed of the first N start-stop periods of the variable frequency compressor; n is more than or equal to 1;
when the average operation rate is within a preset target operation rate range, controlling the variable frequency compressor to start operation at the average starting rotation speed under the current start-stop period;
when the average operation rate is out of the preset target operation rate range, calculating an adjusted rotation speed according to the target operation rate range, the average operation rate of the first N start-stop periods and the average starting rotation speed, and controlling the variable frequency compressor to start operating at the adjusted rotation speed under the current start-stop period;
when the average running rate is out of the preset target running rate range, calculating an adjusted running rate according to the target running rate range, the average running rate of the first N start-stop periods and the average starting speed, wherein the method specifically comprises the following steps:
when the average running rate is out of the preset target running rate range, calculating the adjusted rotating speed according to the target running rate range, the average running rate of the first N start-stop periods and the average starting rotating speed by the following calculation formula:
Figure FDA0004043631020000053
Figure FDA0004043631020000061
Wherein rpm is N+1 For the adjusted rotation speed, rpm is the average starting rotation speed of the first N start-stop periods, eta is the average running rate of the first N start-stop periods, [ eta ] min ,η max ]The preset target operation rate range is set; m is a preset exponential factor, m>0。
CN202110390242.6A 2021-04-12 2021-04-12 Refrigerator, variable frequency compressor and control method of variable frequency compressor Active CN113915917B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110390242.6A CN113915917B (en) 2021-04-12 2021-04-12 Refrigerator, variable frequency compressor and control method of variable frequency compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110390242.6A CN113915917B (en) 2021-04-12 2021-04-12 Refrigerator, variable frequency compressor and control method of variable frequency compressor

Publications (2)

Publication Number Publication Date
CN113915917A CN113915917A (en) 2022-01-11
CN113915917B true CN113915917B (en) 2023-04-25

Family

ID=79232718

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110390242.6A Active CN113915917B (en) 2021-04-12 2021-04-12 Refrigerator, variable frequency compressor and control method of variable frequency compressor

Country Status (1)

Country Link
CN (1) CN113915917B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114646167B (en) * 2022-03-15 2023-06-23 海信冰箱有限公司 Refrigerator and control method of variable frequency compressor of refrigerator
CN115183514A (en) * 2022-06-14 2022-10-14 海信（山东）冰箱有限公司 Refrigerator and compressor rotating speed control method
CN115388611A (en) * 2022-08-22 2022-11-25 海信冰箱有限公司 Refrigerator and compressor control method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103776234B (en) * 2014-02-25 2015-09-16 合肥美菱股份有限公司 A kind of refrigerator method for controlling frequency conversion and application thereof
CN104154703B (en) * 2014-07-22 2016-08-17 海信容声(广东)冰箱有限公司 The control method for frequency of frequency conversion refrigerator
CN104806499B (en) * 2015-03-18 2017-11-17 合肥华凌股份有限公司 Control method
CN105276914B (en) * 2015-04-24 2017-09-15 Tcl智能科技（合肥）有限公司 Frequency-changeable compressor control method and refrigerator
CN106052290A (en) * 2016-05-23 2016-10-26 广州美的华凌冰箱有限公司 Control method and device for refrigerator and refrigerator
CN107084592B (en) * 2017-05-26 2019-12-03 长虹美菱股份有限公司 A kind of wind cooling refrigerator method for controlling frequency conversion and its refrigerator
CN111780488B (en) * 2020-06-23 2022-01-28 珠海格力电器股份有限公司 Compressor control method and device capable of effectively adjusting rotating speed and refrigeration equipment

Also Published As

Publication number Publication date
CN113915917A (en) 2022-01-11

Similar Documents

Publication Publication Date Title
CN113915917B (en) Refrigerator, variable frequency compressor and control method of variable frequency compressor
CN108759290B (en) Frequency control method for compressor of variable frequency refrigerator
CN107606871B (en) Control method and device of variable frequency refrigerator and variable frequency refrigerator
CN107062771B (en) Defrosting control method and wind cooling refrigerator
CN113819596B (en) Air conditioner control method and air conditioner
CN110749150B (en) Rotating speed control system and method of refrigerating fan
EP3093595A1 (en) Refrigerator and control method thereof
CN109489335B (en) Refrigerator fan control method
CN113915827A (en) Rotating speed control method for refrigerator and variable frequency compressor
CN111023426B (en) Air conditioner control method and device, air conditioner and storage medium
CN113503664A (en) Control method of variable frequency compressor and refrigeration appliance
CN110749040B (en) Running state detection method and device, fan, air conditioner and storage medium
CN106440594A (en) Outdoor fan control method and system and air conditioner
CN104949463A (en) Accurate and efficient temperature control implement method for refrigerator
CN108088143B (en) Fan operation control method, control device, refrigeration equipment and storage medium
CN113587405A (en) Air conditioner control method and system based on temperature correction
CN110487020B (en) Frequency control method for frequency conversion refrigerator
CN110848899B (en) Variable frequency air conditioner operation control method, computer readable storage medium and air conditioner
CN113983756B (en) Air-cooled refrigerator control method and device and air-cooled refrigerator
CN114992928A (en) Control method of refrigeration equipment and refrigeration equipment
CN114034155A (en) Method for calculating ring temperature and controlling rotating speed of compressor
CN109983284B (en) Air conditioning system based on variable frequency compressor and control method thereof
CN113758129A (en) Control method of refrigerator
CN107576113B (en) Control method and system of air conditioner under high-humidity heating working condition
CN114646167B (en) Refrigerator and control method of variable frequency compressor of refrigerator

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: 266000 Haixin Avenue, Nancun Town, Pingdu City, Qingdao City, Shandong Province

Applicant after: Hisense refrigerator Co.,Ltd.

Address before: 266100 Songling Road, Laoshan District, Qingdao, Shandong Province, No. 399

Applicant before: HISENSE (SHANDONG) REFRIGERATOR Co.,Ltd.

CB02 Change of applicant information
GR01 Patent grant
GR01 Patent grant