CN109307400B - Refrigerator refrigerating capacity control method and device and refrigerator - Google Patents
Refrigerator refrigerating capacity control method and device and refrigerator Download PDFInfo
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- CN109307400B CN109307400B CN201710630060.5A CN201710630060A CN109307400B CN 109307400 B CN109307400 B CN 109307400B CN 201710630060 A CN201710630060 A CN 201710630060A CN 109307400 B CN109307400 B CN 109307400B
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- 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
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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- 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
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- 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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
- F25D2700/123—Sensors measuring the inside temperature more than one sensor measuring the inside temperature in a compartment
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- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The embodiment of the invention provides a refrigerator refrigerating capacity control method and device and a refrigerator, and belongs to the field of household appliances. The method comprises the following steps: in the (N + 1) th operation period of the refrigerator compressor operation, determining the cumulative starting time T of the compressor in the first N operation periodsKNAnd the total time T of the first N operating cyclesN(ii) a Accumulating the starting time T according to the compressors in the first N operation periodsKNAnd the total time T of the first N operating cyclesNCalculating the average open-circuit rate n; the average on-time rate n and the preset on-time rate n are compared1And adjusting the running stroke of the compressor piston according to the comparison result to control the refrigerating capacity of the refrigerator. The method and the device for controlling the refrigerating capacity of the refrigerator and the refrigerator are suitable for electronic refrigerators, mechanical refrigerators and computer refrigerators with program control, have wide application range, can enable the refrigerator to be in a relatively ideal running state all the time, effectively reduce the start-up and shutdown losses of a compressor and reduce the temperature fluctuation in the refrigerator.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a method and a device for controlling the refrigerating capacity of a refrigerator and the refrigerator.
Background
At present, due to the requirement of energy conservation, a plurality of frequency conversion refrigerators appear on the market, the principle of the frequency conversion refrigerator is that the power supply frequency of a compressor is changed through a frequency conversion plate, so that the rotating speed of the compressor is adjusted, and after the rotating speed of the compressor is changed, the amount of compressed and discharged gaseous refrigerants in unit time is changed, so that the flow rate of refrigerants in a refrigerator refrigerating system is changed, and the effect of changing the refrigerating capacity of the whole refrigerator is realized. When the frequency conversion refrigerator operates at low frequency, the refrigerating capacity is smaller, and when the frequency conversion refrigerator operates at high frequency, the refrigerating capacity is larger. Generally, the cost of the frequency conversion refrigerator is higher than that of a fixed frequency refrigerator.
The whole machine refrigerating capacity of the existing frequency conversion refrigerator changes according to the frequency change of the conditions such as ambient temperature, set temperature, door opening and closing, defrosting and the like, so that the change of refrigerating capacity is realized. The control programs for controlling the frequency change are suitable for the electric control refrigerator, the frequency changes are designed in advance, if the frequency change which is not in the design range occurs in the actual use process of the refrigerator, the program control is easy to cause problems and leaks, the reliability is poor, and the energy conservation can not be realized in the whole environment of the refrigerator. Still more importantly, these control procedures are not practical for simple electronic or mechanical refrigerators.
Disclosure of Invention
The invention aims to provide a method and a device for controlling the refrigerating capacity of a refrigerator and the refrigerator.
In order to achieve the above object, an embodiment of the present invention provides a method for controlling a cooling capacity of a refrigerator, including: in the (N + 1) th operation period of the refrigerator compressor operation, determining the cumulative starting time T of the compressor in the first N operation periodsKNAnd the total time T of the first N operating cyclesNThe running period is from the start of the compressor to the end of the restart of the compressor; accumulating the starting time T according to the compressors in the first N operation periodsKNAnd the total time T of the first N operating cyclesNCalculating the average open-circuit rate n; the average on-time rate n and the preset on-time rate n are compared1Compared with, in order toAnd adjusting the running stroke of the compressor piston according to the comparison result to control the refrigerating capacity of the refrigerator.
Preferably, the adjusting the operation stroke of the compressor piston according to the comparison result to control the refrigerating capacity of the refrigerator comprises: when n is less than or equal to n1And controlling the running stroke of the compressor piston to be reduced in the next running period.
Preferably, the average on-state probability n is calculated by the following formula:
wherein T isKNAccumulating the starting time, T, for the compressors in the first N operating cyclesNThe total time of the first N operating cycles.
Preferably, the adjusting the operation stroke of the compressor piston according to the comparison result to control the refrigerating capacity of the refrigerator comprises: where n is greater than n1And when the starting time of the compressor in any one of the previous N operation periods is longer than the preset time, controlling the operation stroke of the compressor piston to be increased in the next operation period.
Preferably, the adjusting the operation stroke of the compressor piston according to the comparison result to control the refrigerating capacity of the refrigerator comprises: where n is greater than n1And when the temperature of any chamber in the plurality of chambers is to be adjusted downwards, the operation stroke of the compressor piston is controlled to be increased in the next operation period.
Preferably, the adjusting the operation stroke of the compressor piston according to the comparison result to control the refrigerating capacity of the refrigerator comprises: detecting the temperature of a plurality of compartments of the refrigerator; where n is greater than n1And when the difference between the temperature of any one of the chambers and the preset temperature corresponding to the chamber is greater than or equal to the preset temperature difference, controlling the running stroke of the compressor piston to be increased in the next running period.
The present invention also provides a refrigerator cooling capacity control apparatus, comprising: a detection unit and a control unit, wherein the detection unit is used for determining the compressor in the first N operation periods in the N +1 operation period of the operation of the compressor of the refrigeratorAccumulated boot time TKNAnd the total time T of the first N operating cyclesNThe running period is from the start of the compressor to the end of the restart of the compressor; the control unit is used for accumulating the starting time T according to the compressors in the first N running periodsKNAnd the total time T of the first N operating cyclesNCalculating the average open-circuit rate n; the average on-time rate n and the preset on-time rate n are compared1And adjusting the running stroke of the compressor piston according to the comparison result to control the refrigerating capacity of the refrigerator.
Preferably, the control unit is further configured to: when n is less than or equal to n1And controlling the running stroke of the compressor piston to be reduced in the next running period.
Preferably, the control unit is further configured to: where n is greater than n1And when the starting time of the compressor in any one of the previous N operation periods is greater than the preset time, controlling the operation stroke of the compressor piston to increase in the next operation period.
Preferably, the control unit is further configured to: where n is greater than n1And when the temperature of any one of the plurality of compartments is to be adjusted downwards, the compressor piston operation stroke is controlled to be increased in the next operation period.
Preferably, the detection unit is further used for detecting the temperatures of a plurality of compartments of the refrigerator; the control unit is also used for judging whether n is larger than n1And when the difference between the temperature of any one of the chambers and the preset temperature corresponding to the chamber is greater than or equal to the preset temperature difference, controlling the running stroke of the compressor piston to be increased in the next running period.
The invention also provides a refrigerator which comprises the refrigerator refrigerating capacity control device.
By adopting the technical scheme, the refrigerator refrigerating capacity control method and device and the refrigerator provided by the invention, in the (N + 1) th operation period of the operation of the compressor of the refrigerator, the accumulated starting time of the compressor in the first N operation periods and the total time of the first N operation periods are determined, wherein the operation period is from the start of the compressor to the restart of the compressor; calculating the average starting rate according to the accumulated starting time of the compressor in the first N operation periods and the total time of the first N operation periods; and comparing the average opening rate with a preset opening rate, and adjusting the running stroke of a compressor piston according to the comparison result so as to control the refrigerating capacity of the refrigerator. The method and the device for controlling the refrigerating capacity of the refrigerator and the refrigerator are suitable for electronic refrigerators, mechanical refrigerators and computer refrigerators with program control, have wide application range, can enable the refrigerator to be in a relatively ideal running state all the time, effectively reduce the start-stop loss of a compressor and reduce the temperature fluctuation in the refrigerator.
Additional features and advantages of embodiments of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a compressor according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for controlling a cooling capacity of a refrigerator according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for controlling cooling capacity of a refrigerator according to another embodiment of the present invention;
fig. 4 is a flowchart of a method for controlling cooling capacity of a refrigerator according to another embodiment of the present invention;
fig. 5 is a flowchart of a method for controlling cooling capacity of a refrigerator according to another embodiment of the present invention;
fig. 6 is a flowchart of a refrigeration capacity control apparatus for a refrigerator according to an embodiment of the present invention.
Description of the reference numerals
601 detection unit 602 control unit.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a schematic structural diagram of a compressor according to an embodiment of the present invention. As shown in fig. 1, fig. 1 is a compressor which realizes adjustment of the exhaust amount of the compressor by adjusting the movement stroke of a piston, thereby realizing adjustment of the overall refrigerating capacity of the refrigerator. The variable displacement compressor is realized by adjusting the running stroke of the piston, the running stroke can be divided into N types according to manufacturability, and the displacement of each corresponding compressor is different. The exhaust gas volume is divided into the following types:
1. maximum displacement: in the maximum displacement state, the piston moves from the position 1 to the farthest position Y (in the opposite process of air suction, the piston moves from the farthest position Y to the position 1) in one stroke, at the moment, the air suction and exhaust capacities of the compressor are maximum, the flow of refrigerant in a refrigeration system of a corresponding refrigerator is large, the refrigerating capacity is large, and the requirement of quick refrigeration is met;
2. a second large displacement, when the piston moves from the position 2 to the farthest position Y (opposite during air suction, and moves from the farthest position Y to the position 2) in one stroke, wherein the air suction and discharge capacities of the compressor are smaller than the maximum displacement, but are also in a large displacement range, and the corresponding refrigerant flow in the refrigeration system of the refrigerator is relatively large, and the refrigeration capacity is relatively large;
3. the Nth large displacement, when the piston moves from the position N to the farthest position Y in one stroke (opposite to the suction, the piston moves from the farthest position Y to the position N), the suction and discharge capacities of the compressor are minimum, and the refrigerating capacity is minimum corresponding to the minimum refrigerant flow in the refrigerating system of the refrigerator.
The whole machine refrigerating capacity of the existing frequency conversion refrigerator changes according to the frequency change of the conditions such as ambient temperature, set temperature, door opening and closing, defrosting and the like, so that the change of refrigerating capacity is realized. For the variable-displacement refrigerator which realizes the adjustment of the refrigerating capacity of the whole refrigerator through the variable-displacement compressor, the invention provides a control method which is suitable for an electric control refrigerator and also suitable for a simple electronic refrigerator and a mechanical refrigerator and can realize the purpose of energy saving in the whole environment, and the method is specifically as follows:
fig. 2 is a flowchart of a method for controlling cooling capacity of a refrigerator according to an embodiment of the present invention. As shown in fig. 2, an embodiment of the present invention provides a method for controlling a cooling capacity of a refrigerator, where the method includes: in the (N + 1) th operation period of the refrigerator compressor operation, determining the cumulative starting time T of the compressor in the first N operation periodsKNAnd the total time T of the first N operating cyclesNThe operation cycle is from the start of the compressor to the end of the compressor restart (step S21); accumulating the starting time T according to the compressors in the first N operation periodsKNAnd the total time T of the first N operating cyclesNCalculating an average open-circuit ratio n (step S22); the average on-time rate n and the preset on-time rate n are compared1Comparing, and adjusting the compressor piston operation stroke according to the comparison result to control the refrigerating capacity of the refrigerator (step S23).
Preferably, the average on-state probability n is calculated by the following formula:
wherein T isKNAccumulating the starting time, T, for the compressors in the first N operating cyclesNThe total time of the first N operating cycles.
Predetermined on-time n1The open-time rate can be calculated by the formula in the normal operation process of the refrigerator and is input into the refrigerator controller in advance to be compared with the calculated average open-time rate n, and the open-time rate is preferably 60-95%. Cumulative on-time T for the compressor over the first N operating cyclesKNThe sum of the compressor turn-on times for each operating cycle.
Meanwhile, the longest operation time M of the compressor is set, if the compressor does not stop for a long time due to insufficient refrigeration capacity of the compressor or other reasons in an operation period, when the starting time of the compressor in the operation period is more than M, the compressor is controlled to stop no matter how the starting time is and the state of the compressor.
The compressor piston is preferably controlled to operate at maximum stroke when the refrigerator is first powered up.
Fig. 3 is a flowchart of a method for controlling cooling capacity of a refrigerator according to another embodiment of the present invention. As shown in fig. 4, the comparing the on-time rate N with the predetermined on-time rate N, and adjusting the compressor piston stroke according to the comparison result to control the refrigeration capacity of the refrigerator includes: judging whether n is less than or equal to n1(step S31); when n is less than or equal to n1Controlling the compressor piston operation stroke to be reduced in the next operation period (step S32); where n is greater than n1Judging whether the starting time of the compressor in any one operation cycle in the first N operation cycles is more than the preset time (step S33); when the starting time of the compressor in any one of the previous N operation periods is greater than the preset time, controlling the operation stroke of the compressor piston to increase in the next operation period (step S34); and when the starting time of the compressor without the operation period in the previous N operation periods is greater than the preset time, controlling the operation stroke of the compressor piston to be unchanged in the next operation period (step S35).
N is less than or equal to n1And then, the refrigerating capacity of the refrigerator is enough, so that the running stroke of the compressor piston is controlled to be reduced in the next running period to achieve the aim of saving energy.
N is greater than n1Other decisions may be made to adjust the compressor piston stroke, as will be described below.
In this embodiment, n is greater than n1In the first judging method of (1), when n is larger than n1Judging whether the starting time of the compressor in any one operation period in the previous N operation periods is longer than the preset time, if so, controlling the operation stroke of the compressor piston to be increased in the next operation period; if not, the operation stroke of the compressor piston is controlled to be unchanged in the next operation period. Preferably, the preset time in the embodiment of the present invention is 60 to 100 minutes.
Fig. 4 is a flowchart of a method for controlling cooling capacity of a refrigerator according to another embodiment of the present invention. As shown in fig. 5, the comparing the on-time rate N with the predetermined on-time rate N, and adjusting the compressor piston stroke according to the comparison result to control the refrigeration capacity of the refrigerator includes: judging whether n is less than or equal to n1(step S41); when n is less than or equal to n1Controlling the compressor piston operation stroke to be reduced in the next operation period (step S42); where n is greater than n1Determining whether the temperature of any one of the plurality of compartments is to be adjusted downward (step S43); controlling the compressor piston operation stroke to be increased in a next operation period when the temperature of any one of the plurality of compartments is to be turned down (step S44); when the temperature of any one of the plurality of compartments is not to be turned down, the compressor piston operation stroke is controlled to be constant at the next operation period (step S45).
In this embodiment, n is greater than n1In the second judgment method of (1), when n is larger than n1If the set temperature of any chamber is adjusted downwards, the refrigerator needs larger refrigerating capacity, and the operation stroke of the compressor piston is controlled to be increased in the next operation period; and if the set temperature of the compartment is not adjusted downwards, controlling the running stroke of the compressor piston to be unchanged in the next running period.
Fig. 5 is a flowchart of a method for controlling cooling capacity of a refrigerator according to another embodiment of the present invention. As shown in fig. 6, the comparing the on-time rate N with the predetermined on-time rate N, and adjusting the compressor piston stroke according to the comparison result to control the refrigeration capacity of the refrigerator according to the comparison result comprises: detecting temperatures of a plurality of compartments of the refrigerator (step S51); judging whether n is less than or equal to n1(step S52); when n is less than or equal to n1Controlling the compressor piston operation stroke to be reduced in the next operation period (step S53); where n is greater than n1Then, judge the plurality ofWhether the difference between the temperature of any one of the compartments and the preset temperature corresponding to the compartment is larger than or equal to the preset temperature difference or not (step S54); when the difference between the temperature of any one of the chambers and the preset temperature corresponding to the chamber is greater than or equal to the preset temperature difference, controlling the running stroke of the compressor piston to increase in the next running period (step S55); and when the difference between the temperature of any one chamber and the preset temperature corresponding to the chamber is larger than or equal to the preset temperature difference, controlling the operation stroke of the compressor piston to be unchanged in the next operation period (step S56).
In this embodiment, n is greater than n1In the third judging method of (1), when n is larger than n1Judging whether the difference between the temperature of any one of the chambers and the preset temperature corresponding to the chamber is greater than or equal to the preset temperature difference, if so, indicating that larger refrigerating capacity is needed, and controlling the operation stroke of the compressor piston to be increased in the next operation period; if not, the operation stroke of the compressor piston is controlled to be unchanged in the next operation period, wherein the preset temperature is preferably the starting point temperature, and the preset temperature difference is 1-2 Hough degrees.
Fig. 6 is a flowchart of a device for controlling cooling capacity of a refrigerator according to an embodiment of the present invention. As shown in fig. 6, the present invention also provides a refrigerating capacity control apparatus for a refrigerator, the control apparatus comprising: a detection unit 601 and a control unit 602, wherein the detection unit 601 is used for determining the cumulative start-up time T of the compressor in the first N operation periods in the N +1 operation period of the operation of the compressor of the refrigeratorKNAnd the total time T of the first N operating cyclesNThe running period is from the start of the compressor to the end of the restart of the compressor; the control unit 602 is configured to accumulate the boot time T according to the compressors in the first N operating periodsKNAnd the total time T of the first N operating cyclesNCalculating the average open-circuit rate n; the average on-time rate n and the preset on-time rate n are compared1And comparing, and adjusting the running stroke of the compressor piston according to the comparison result to control the refrigerating capacity of the refrigerator.
Preferably, the control unit 602 is further configured to: when n is less thanIs equal to n1And controlling the running stroke of the compressor piston to be reduced in the next running period.
Preferably, the control unit 602 is further configured to: where n is greater than n1And when the starting time of the compressor in any one of the previous N operation periods is longer than the preset time, controlling the operation stroke of the compressor piston to be increased in the next operation period.
Preferably, the control unit 602 is further configured to: where n is greater than n1And when the temperature of any one of the plurality of compartments is to be adjusted downwards, the compressor piston operation stroke is controlled to be increased in the next operation period.
Preferably, the detection unit 601 is further used for detecting the temperatures of a plurality of compartments of the refrigerator; the control unit 602 is further configured to determine whether n is greater than n1And when the difference between the temperature of any one of the chambers and the preset temperature corresponding to the chamber is greater than or equal to the preset temperature difference, controlling the running stroke of the compressor piston to be increased in the next running period.
The invention also provides a refrigerator which comprises the refrigerator refrigerating capacity control device.
By adopting the technical scheme, the refrigerator refrigerating capacity control method and device and the refrigerator provided by the invention, in the (N + 1) th operation period of the operation of the compressor of the refrigerator, the accumulated starting time of the compressor in the first N operation periods and the total time of the first N operation periods are determined, wherein the operation period is from the start of the compressor to the restart of the compressor; calculating the average starting rate according to the accumulated starting time of the compressor in the first N operation periods and the total time of the first N operation periods; and comparing the average opening rate with a preset opening rate, and adjusting the running stroke of a compressor piston according to the comparison result so as to control the refrigerating capacity of the refrigerator. The method and the device for controlling the refrigerating capacity of the refrigerator and the refrigerator are suitable for electronic refrigerators, mechanical refrigerators and computer refrigerators with program control, have wide application range, can enable the refrigerator to be in a relatively ideal running state all the time, effectively reduce the start-stop loss of a compressor and reduce the temperature fluctuation in the refrigerator.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and these simple modifications all fall into the scope of the embodiments of the present invention.
It should be noted that the respective technical features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the embodiments of the invention are not described further in order to avoid unnecessary repetition.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a processor (a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (10)
1. A method for controlling the refrigerating capacity of a refrigerator is characterized by comprising the following steps:
in the (N + 1) th operation period of the refrigerator compressor operation, determining the cumulative starting time T of the compressor in the first N operation periodsKNAnd the total time T of the first N operating cyclesNThe running period is from the start of the compressor to the end of the restart of the compressor;
accumulating the starting time T according to the compressors in the first N operation periodsKNAnd the total time T of the first N operating cyclesNCalculating the average open-circuit rate n;
the average on-time rate n and the preset on-time rate n are compared1Comparing;
where n is greater than n1，
When the starting time of the compressor in any one of the previous N operation periods is longer than the preset time, controlling the operation stroke of the compressor piston to increase in the next operation period;
and when the starting time of the compressor without the operation period in the previous N operation periods is longer than the preset time, controlling the operation stroke of the compressor piston to be kept unchanged in the next operation period.
2. The method for controlling a refrigerating capacity of a refrigerator according to claim 1, wherein the adjusting of the operation stroke of the compressor piston according to the comparison result to control the refrigerating capacity of the refrigerator comprises:
when n is less than or equal to n1And controlling the running stroke of the compressor piston to be reduced in the next running period.
3. The method for controlling a refrigerating capacity of a refrigerator according to claim 1, wherein the average on-time n is calculated by the following formula:
4. The method for controlling the cooling capacity of a refrigerator according to claim 1, further comprising:
where n is greater than n1And when the temperature of any one of the plurality of compartments is to be adjusted downwards, the compressor piston operation stroke is controlled to be increased in the next operation period.
5. The method for controlling the cooling capacity of a refrigerator according to claim 1, further comprising:
detecting the temperature of a plurality of compartments of the refrigerator;
where n is greater than n1And when the difference between the temperature of any one of the chambers and the preset temperature corresponding to the chamber is greater than or equal to the preset temperature difference, controlling the running stroke of the compressor piston to be increased in the next running period.
6. A refrigerating capacity control apparatus for a refrigerator, characterized by comprising:
a detection unit and a control unit, wherein,
the detection unit is used for determining the accumulated starting time T of the compressor in the first N operation periods in the (N + 1) th operation period of the compressor of the refrigeratorKNAnd the total time T of the first N operating cyclesNThe running period is from the start of the compressor to the end of the restart of the compressor;
the control unit is used for accumulating the starting time T according to the compressors in the first N running periodsKNAnd the total time T of the first N operating cyclesNCalculating the average open-circuit rate n;
the average on-time rate n and the preset on-time rate n are compared1Comparing;
where n is greater than n1，
When the starting time of the compressor in any one of the previous N operation periods is longer than the preset time, controlling the operation stroke of the compressor piston to increase in the next operation period;
and when the starting time of the compressor without the operation period in the previous N operation periods is longer than the preset time, controlling the operation stroke of the compressor piston to be kept unchanged in the next operation period.
7. A refrigerating capacity control apparatus for a refrigerator as claimed in claim 6, wherein said control unit is further configured to:
when n is less than or equal to n1And controlling the running stroke of the compressor piston to be reduced in the next running period.
8. A refrigerating capacity control apparatus for a refrigerator as claimed in claim 6, wherein said control unit is further configured to:
where n is greater than n1And when the temperature of any one of the plurality of compartments is to be adjusted downwards, the compressor piston operation stroke is controlled to be increased in the next operation period.
9. The cooling capacity control apparatus for a refrigerator as claimed in claim 6,
the detection unit is also used for detecting the temperatures of a plurality of compartments of the refrigerator;
the control unit is also used for judging whether n is larger than n1And when the difference between the temperature of any one of the chambers and the preset temperature corresponding to the chamber is greater than or equal to the preset temperature difference, controlling the running stroke of the compressor piston to be increased in the next running period.
10. A refrigerator characterized by comprising the refrigerating capacity control apparatus of the refrigerator according to any one of claims 6 to 9.
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| CN201710630060.5A CN109307400B (en) | 2017-07-28 | 2017-07-28 | Refrigerator refrigerating capacity control method and device and refrigerator |
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| CN201710630060.5A CN109307400B (en) | 2017-07-28 | 2017-07-28 | Refrigerator refrigerating capacity control method and device and refrigerator |
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