CN114234547B - Air door control method and device and refrigerator - Google Patents
Air door control method and device and refrigerator Download PDFInfo
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- CN114234547B CN114234547B CN202111584906.9A CN202111584906A CN114234547B CN 114234547 B CN114234547 B CN 114234547B CN 202111584906 A CN202111584906 A CN 202111584906A CN 114234547 B CN114234547 B CN 114234547B
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000012544 monitoring process Methods 0.000 claims abstract description 29
- 238000007710 freezing Methods 0.000 claims description 20
- 230000008014 freezing Effects 0.000 claims description 20
- 238000005057 refrigeration Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
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- 238000010586 diagram Methods 0.000 description 6
- 230000004044 response Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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- 230000036541 health Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
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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
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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
- F25D2600/02—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
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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
- F25D2700/02—Sensors detecting door opening
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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
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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
- F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses an air door control method and device and a refrigerator. Wherein, the method comprises the following steps: monitoring whether a chamber demand coefficient, an environment temperature coefficient and a door opening coefficient are changed or not in a precise control mode; when at least one of the chamber demand coefficient, the environment temperature coefficient and the door opening coefficient is changed, calculating the opening degree of the air door so as to adjust the air door of the refrigerator; and the opening degree of the air door is determined according to the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient. According to the invention, the actual indoor temperature, the ambient temperature and the door opening and closing time of the refrigerator are combined, the temperature control process in the refrigerator is subjected to pre-feedback and pre-treatment, so that the indoor temperature fluctuation is reduced, the temperature control is more stable, higher cost is not required, and the food material storage effect is better.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a method and a device for controlling an air door and a refrigerator.
Background
Along with the improvement of life, the variety of articles stored in the refrigerator by people is gradually increased, wherein the storage of mother and infant, old people health care products or expensive food materials and the like also becomes one of the requirements, and higher requirements are put forward on the temperature fluctuation of the refrigerator.
The temperature in the common refrigerator cannot be intelligently controlled to be stable due to a single temperature control method, the temperature fluctuation of a single point in a refrigerating chamber of the common refrigerator reaches +/-4 ℃, for example, when the refrigerating temperature is set to be 4 ℃, the highest fluctuation reaches 8 ℃ and the lowest fluctuation reaches-4 ℃, because the temperature sensing bag for detecting the temperature is not high in precision, and the air door or the fan is not accurately controlled to be opened and closed, the delay control is caused.
An existing control scheme is to improve temperature acquisition precision, for example, according to a 0.1-degree temperature acquisition processing method, but the control scheme has high requirements on the accuracy of a temperature sensing bulb, and the cost of parts and control is high. Another control scheme is a temperature measurement method using a plurality of infrared sensors, and the control scheme also has a problem of high cost for detecting the thermal bulb.
Aiming at the problem of unstable temperature control effect of the refrigerator compartment in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides an air door control method and device and a refrigerator, and aims to solve the problem that the temperature control effect of a refrigerator chamber is unstable in the prior art.
In order to solve the technical problem, the invention provides a damper control method, wherein the method comprises the following steps: monitoring whether a compartment demand coefficient, a ring temperature coefficient and a door opening coefficient are changed or not in a fine control mode; when at least one of the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient is changed, calculating the opening degree of the air door so as to adjust the air door of the refrigerator; and the opening degree of the air door is determined according to the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient.
Further, monitoring whether the compartment demand factor changes comprises: acquiring the actual measurement temperature of the compartment; determining the compartment demand coefficient according to the difference value between the compartment measured temperature and the compartment preset temperature; and the corresponding relation between the difference value and the chamber requirement coefficient is preset.
Further, monitoring whether the ring temperature coefficient changes comprises: collecting the ambient temperature; determining the environment temperature coefficient according to the environment temperature; wherein, the corresponding relation between the environment temperature and the environment temperature coefficient is preset.
Further, monitoring whether the door opening coefficient changes comprises: monitoring whether the refrigerator has door opening action or not; if yes, determining the door opening time after the refrigerator is closed, and determining the door opening coefficient according to the door opening time; and presetting the corresponding relation between the door opening time and the door opening coefficient.
Further, when at least one of the compartment demand coefficient, the ambient temperature coefficient and the door opening coefficient is changed, calculating the opening degree of the air door, including: calculating an opening coefficient according to the changed compartment demand coefficient, the changed environment temperature coefficient and the changed door opening coefficient; and calculating to obtain a new air door opening degree according to the opening degree coefficient and the current air door opening degree.
Further, calculating an opening coefficient according to the changed compartment demand coefficient, the changed environment temperature coefficient and the changed door opening coefficient, and including: the opening coefficient = the compartment demand coefficient, the ring temperature coefficient, and the door opening coefficient.
Further, after calculating the opening degree of the damper, the method further includes: and if the calculated new opening degree of the air door exceeds the preset opening degree, adjusting the air door of the refrigerator according to the preset opening degree.
Further, after calculating the opening degree of the damper, the method further comprises: and if the calculated opening degree of the air door exceeds the preset maximum opening degree, improving the running frequency of the compressor and the wind speed of the fan.
Further, the method further comprises: monitoring the measured temperature of the refrigerating chamber; and when the difference value between the actual measured temperature of the refrigerating chamber and the preset refrigerating temperature is smaller than or equal to a first preset temperature threshold value, triggering to enter the precise control mode.
Further, after adjusting the damper of the refrigerator, the method further includes: continuously monitoring the actually measured temperature of the refrigerating chamber after a preset time period; if the difference value between the measured temperature of the refrigerating chamber and the preset refrigerating temperature is larger than a second preset temperature threshold value, performing feedback operation on the air door; wherein the second preset temperature threshold is smaller than the first preset temperature threshold.
Further, if the difference between the measured temperature of the refrigerating chamber and the preset refrigerating temperature is greater than a second preset temperature threshold, performing feedback operation on the air door, including: adjusting the opening degree of the air door of the refrigerator to a preset maximum opening degree; when the difference value between the actually measured temperature of the refrigerating chamber and the preset refrigerating temperature is reduced to the second preset temperature threshold value, the opening degree of the air door of the refrigerator is adjusted back to the opening degree of the air door calculated according to the chamber demand coefficient, the environment temperature coefficient and the door opening coefficient after a preset time interval.
Further, if the difference between the measured temperature of the refrigerating chamber and the preset refrigerating temperature is greater than a second preset temperature threshold, performing feedback operation on the air door, including: increasing the opening degree of a damper of the refrigerator by a preset value; the opening degree of the air door after the preset value is increased is smaller than or equal to the preset highest opening degree; when the difference value between the actually measured temperature of the refrigerating chamber and the preset refrigerating temperature is reduced to the second preset temperature threshold value, the air door opening degree of the refrigerator is adjusted back to the air door opening degree calculated according to the chamber demand coefficient, the environment temperature coefficient and the door opening coefficient after a preset time interval.
Further, the method further comprises: continuously monitoring the actually measured temperature of the refrigerating chamber in a precise control mode; and if the difference value between the actually measured temperature of the refrigerating chamber and the preset refrigerating temperature is greater than the preset temperature threshold value, triggering to exit the fine control mode and entering a normal temperature control mode.
Further, the compartment demand coefficient is a refrigeration demand coefficient or a temperature change demand coefficient; when the compartment demand coefficient is a freezing demand coefficient, the air door of the refrigerator is a freezing air door; when the compartment demand coefficient is the variable temperature demand coefficient, the air door of the refrigerator is the variable temperature air door.
Further, the method further comprises: in a fine control mode, periodically monitoring whether the compartment demand coefficient and the ring temperature coefficient are changed.
The present invention also provides a damper control device, wherein the device comprises: the monitoring module is used for monitoring whether the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient are changed or not in the fine control mode; the processing module is used for calculating the opening degree of the air door when at least one of the chamber requirement coefficient, the environment temperature coefficient and the door opening coefficient is changed so as to adjust the air door of the refrigerator; and the opening degree of the air door is determined according to the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient.
The invention also provides a refrigerator, wherein the refrigerator comprises the air door control device.
The invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the program when executed by a processor implements the method as described above.
By applying the technical scheme of the invention, the temperature control process in the refrigerator is subjected to pre-feedback and pre-treatment by combining the actual temperature in the compartment, the ambient temperature and the time for opening and closing the door of the refrigerator, so that the temperature fluctuation in the compartment is reduced, the temperature control is more stable, higher cost is not required, and the food material storage effect is better.
Drawings
Fig. 1 is a temperature fluctuation diagram in a refrigerating compartment of a general refrigerator according to the related art;
FIG. 2 is a flow chart of a damper control method according to an embodiment of the invention;
FIG. 3 is a schematic illustration of a refrigeration demand coefficient according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of the ring temperature coefficient according to an embodiment of the present invention;
FIG. 5 is a schematic representation of door opening coefficients according to an embodiment of the present invention;
FIG. 6 is a schematic view of a damper configuration according to an embodiment of the present invention;
FIG. 7 is a schematic view of a damper opening according to an embodiment of the invention;
FIG. 8 is a flow chart of the control of a freeze damper according to an embodiment of the present invention;
fig. 9 is a block diagram of the damper control apparatus according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the description of the invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "the plural" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The words "if", as used herein may be interpreted as "at \8230; \8230whenor" when 8230; \8230when or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or apparatus. Without further limitation, an element defined by the phrases "comprising one of \8230;" does not exclude the presence of additional like elements in an article or device comprising the element.
Fig. 1 is a graph showing temperature fluctuation in a refrigerating compartment of a general refrigerator according to the related art, as shown in fig. 1, for example, a refrigerating temperature is initially set to 4 c, and the highest temperature of the refrigerating compartment may reach 7 c due to opening and closing of a door of the refrigerating compartment, and the lowest temperature may reach-1 c, and the temperature fluctuation is large. The reason for the large temperature fluctuation of the room temperature is many, for example: 1. after the temperature rise is detected, the refrigerating air door is opened to reduce the temperature, cold air in the freezing chamber is sucked into the refrigerating chamber, the temperature of the freezing chamber rises, and delay control exists when the frequency of the compressor rises slowly; 2. in the prior art, if the temperature of a compartment is set to be 4 ℃, if program control is higher than 4 ℃, cold energy is input, and if the program control is lower than 4 ℃, the cold energy is closed, when the temperature is 4 ℃, the control program is disordered and the cold energy is not input or closed definitely, so that the cold energy is input when the temperature is higher than 4 ℃ and the cold energy is closed when the temperature is lower than 3 ℃, the original state is maintained during the period of 3-4 ℃, but the temperature deviation is easily generated by the control; 3. the air door switch needs a certain time, when the air door is closed when reaching a set temperature, the air door is closed for the same time, so that the input cold quantity is too much, and the temperature is low; 4. when the temperature of the refrigerating chamber is regulated and controlled, if the refrigerating requirement also exists, the frequency of a compressor is often increased, and the temperature control is not accurate due to the fact that the input cold quantity is relatively large; 5. the temperature of the temperature sensing bulb can only be obtained near the position of the temperature sensing bulb, and the temperature fluctuation of other spaces cannot be obtained; 6. the regulation and control precision of the refrigerator can be influenced by the change of the external environment temperature.
In view of the above, the present invention provides a damper control scheme. Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
FIG. 2 is a flow chart of a damper control method according to an embodiment of the present invention, as shown in FIG. 2, including the steps of:
step S201, in a precise control mode, monitoring whether a compartment demand coefficient, a ring temperature coefficient and a door opening coefficient are changed;
step S202, when at least one of the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient changes, calculating the opening degree of the air door so as to adjust the air door of the refrigerator; the opening degree of the air door is determined according to the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient.
Specifically, when monitoring whether the compartment demand coefficient changes, the actually measured compartment temperature can be obtained; determining a compartment demand coefficient according to a difference value between the compartment measured temperature and the compartment preset temperature; wherein, the corresponding relation between the difference value and the compartment demand coefficient is preset.
When the ring temperature coefficient is monitored to be changed, the environment temperature can be collected; determining a ring temperature coefficient according to the ambient temperature; wherein, the corresponding relation between the environmental temperature and the environmental temperature coefficient is preset.
When the door opening coefficient is monitored to be changed, whether the refrigerator has door opening action or not can be monitored; if yes, determining the door opening duration after the refrigerator is closed, and determining a door opening coefficient according to the door opening duration; wherein, the corresponding relation between the door opening time and the door opening coefficient is preset.
It should be noted that, in the fine control mode, whether the room demand coefficient and the ambient temperature coefficient change or not may be monitored periodically or at irregular time, that is, the measured room temperature and the ambient temperature may be monitored periodically or at irregular time. And because the change of the door opening coefficient depends on whether the door is opened or closed, the door opening and closing action of the refrigerator can be monitored.
This embodiment is long when indoor actual temperature, ambient temperature, refrigerator switch door combine room, carries out feed back and preliminary treatment in advance to the temperature control process in the refrigerator for indoor temperature fluctuation diminishes between, and temperature control is more stable, and does not need higher cost, and it is better to eat the material and deposit the effect.
When at least one of the chamber demand coefficient, the environment temperature coefficient and the door opening coefficient is changed, calculating a new air door opening degree, specifically, calculating an opening degree coefficient according to the changed chamber demand coefficient, environment temperature coefficient and door opening coefficient; and calculating to obtain a new air door opening degree according to the opening degree coefficient and the current air door opening degree. When calculating the opening coefficient, the opening coefficient = the compartment demand coefficient × the ring temperature coefficient × the door opening coefficient × a preset correction coefficient. Based on this, can in time obtain new air door aperture when at least one in above-mentioned three coefficient changes to control the air door and open corresponding aperture, realize quick effectual accuse temperature when the room temperature fluctuates.
In practical application, the air door corresponds to a maximum opening value which can be opened, namely a preset opening, and if the calculated opening of the new air door exceeds the preset opening, the air door of the refrigerator is adjusted according to the preset opening. And the rapid cooling can be realized by improving the operating frequency of the compressor and the wind speed of the fan.
The fine control mode mentioned in this embodiment is different from the normal temperature control mode in the prior art, in which the normal temperature control mode is to monitor the temperature of the compartment, and perform a temperature control operation, such as adjusting the frequency of the compressor, when the temperature of the compartment is higher than the set temperature or lower than the set temperature. In practical application, a normal temperature control mode is adopted when the refrigerator is just started to run, the refrigerator is automatically switched to a fine control mode under certain conditions, and specifically, the actually measured temperature of a refrigerating chamber is monitored; and when the difference value between the actually measured temperature of the refrigerating chamber and the preset refrigerating temperature is less than or equal to a first preset temperature threshold value, triggering to enter a precise control mode. Based on this, realize under the state that the room temperature is comparatively close to the settlement temperature, carry out accurate effective temperature control to the condition that room temperature appears undulant.
The embodiment further provides a preferred implementation manner, that is, after the damper of the refrigerator is adjusted, a feedback operation is further set, specifically, the actually measured temperature of the refrigerating chamber is continuously monitored after a preset time interval; if the difference value between the measured temperature of the refrigerating chamber and the preset refrigerating temperature is larger than a second preset temperature threshold value, performing feedback operation on the air door; and the second preset temperature threshold is smaller than the first preset temperature threshold. Namely, the air door of the refrigerator is adjusted to realize temperature control, and if the compartment temperature is not very close to the preset refrigeration temperature, the temperature control can be further optimized, so that the stability of the compartment temperature is accurately and efficiently ensured.
The feedback operation includes: adjusting the opening degree of an air door of the refrigerator to a preset maximum opening degree; when the difference value between the actually measured temperature of the refrigerating chamber and the preset refrigerating temperature is reduced to a second preset temperature threshold value, the opening degree of the air door of the refrigerator is adjusted back to the opening degree of the air door calculated according to the chamber demand coefficient, the environment temperature coefficient and the door opening coefficient after a preset time interval. The feedback operation may also include: increasing the opening degree of a damper of the refrigerator by a preset value; the opening degree of the air door after the preset value is increased is smaller than or equal to the preset highest opening degree; when the difference value between the actually measured temperature of the refrigerating chamber and the preset refrigerating temperature is reduced to a second preset temperature threshold value, the opening degree of the air door of the refrigerator is adjusted back to the opening degree of the air door calculated according to the chamber demand coefficient, the environment temperature coefficient and the door opening coefficient after a preset time interval. Based on this, can realize accurate effective accuse temperature under the condition of the little temperature fluctuation that appears when room temperature is close to predetermineeing cold-stored temperature.
The accurate mode of this embodiment is mainly to the accurate accuse temperature under the little condition of room temperature and the little difference of preset cold-stored temperature, if the two difference in temperature is great, then need adopt normal accuse temperature operation can be quick change room temperature by a wide margin. Therefore, in the fine control mode, the actually measured temperature of the refrigerating chamber needs to be continuously monitored; and if the difference value between the measured temperature of the refrigerating chamber and the preset refrigerating temperature is greater than the preset temperature threshold value, triggering to exit the precise control mode and entering the normal temperature control mode. Based on the method, the precise control mode and the normal temperature control mode respectively have application scenes, and the overall temperature control of the refrigerator is realized under the cooperation of the two modes.
It should be noted that, the damper mentioned in this embodiment may be a freezing damper corresponding to the freezing chamber, or may be a variable temperature damper corresponding to the variable temperature chamber, and when the chamber demand coefficient is the freezing demand coefficient, the damper of the refrigerator is the freezing damper; when the compartment demand coefficient is the variable temperature demand coefficient, the air door of the refrigerator is the variable temperature air door. That is, the present embodiment can control the freezing damper and the temperature changing damper separately.
Example 2
The following description will be made by taking a freezing chamber as an example. FIG. 3 is a refrigeration demand coefficient diagram according to an embodiment of the invention, as shown in FIG. 3, with a refrigeration demand coefficient Δ T1= T Freezing setting -T Freezing measurement When Δ T1>1 hour (for example, the set temperature is-18 ℃, the measured temperature is-19.5 ℃), the freezing measured temperature is lower than the set temperature, the difference is larger, the deviation of the difference is larger, the cold quantity of the freezing chamber is sufficient, the corresponding freezing demand coefficient is small, and when the freezing air door is opened, the angle of opening of the corresponding freezing air door is adjusted to be small, so that the condition that the temperature of the refrigerating chamber is reduced too fast is avoided. Conversely,. DELTA.T 1<When the refrigerating chamber temperature is 1 hour (for example, the set temperature is-18 ℃, and the actually measured temperature is-17.5 ℃), the smaller the difference value is, the refrigerating chamber is in the cooling process, and the angle of a refrigerating air door needs to be increased so as to supplement cold energy for the refrigerating chamber for cooling.
Meanwhile, according to the actual test of the ring temperature (ambient temperature), the corresponding ring temperature coefficient can be determined, as shown in the schematic diagram of the ring temperature coefficient shown in fig. 4, when the ring temperature is higher, the load becomes larger, the ring temperature coefficient is larger, the original set angle of the air door needs to be increased, and besides the original load, the increased angle can maintain the increased load through more cold air. At the moment, the rotating speed of the fan and the frequency of the compressor can be kept unchanged, and accurate temperature control can be realized only by adjusting the angle of the air door.
On the other hand, according to the door opening time of the refrigerator, the door opening coefficient is also set in the embodiment, as shown in the schematic diagram of the door opening coefficient shown in fig. 5, when the door opening time of the refrigerator is longer, the opening angle of the air door is adjusted to be increased through the door opening coefficient of the refrigerator, so that the cold quantity is supplemented. N is a radical of hydrogen Coefficient of opening degree ＝N Coefficient of refrigeration demand *N Coefficient of ambient temperature *N Coefficient of opening door *N Correction factor The correction coefficient is used for correcting the opening coefficient, and is generally a preset value.
Fig. 6 is a schematic structural view of a damper according to an embodiment of the present invention, fig. 7 is a schematic opening view of a damper according to an embodiment of the present invention, and as shown in fig. 6 and 7, the damper of the refrigerator may be a simple switch device, which is driven by a motor and gears to achieve an open state and a closed state from 0 ° to 90 °, and the initial value of the angle is θ. When Δ T = ABS (T) Measured temperature of refrigeration -T Refrigeration set temperature )<And entering a fine control mode at 3 ℃, otherwise, maintaining the original set mode (normal temperature control mode).
Fig. 8 is a flowchart of a control of a freezing damper according to an embodiment of the present invention, as shown in fig. 8, the flowchart including:
step S801, determining whether to perform a fine control mode according to a temperature difference between the actual refrigeration temperature and the set refrigeration temperature (compartment preset temperature).
And step S802, if the temperature difference is greater than or equal to 3 ℃, operating a normal temperature control mode.
And step S803, if the temperature difference is less than 3 ℃, entering a fine control mode.
Step S804, judging whether the refrigeration demand coefficient, the environmental temperature coefficient and the door opening coefficient are changed.
And step S805, if the three are not changed, the opening coefficient defaults to be an initial value 1, and the air door is controlled to be opened and closed according to the original design angle.
Step S806, if at least one of the coefficients changes, a door opening coefficient is calculated, where the door opening coefficient = a refrigeration demand coefficient × a ring temperature coefficient × a door opening coefficient.
In step S807, the damper opening = current opening × opening coefficient is adjusted. The opening degree of the air door can be intelligently controlled according to the requirement until the angle is opened to the maximum (90 degrees). Moreover, the detection is performed once every t2 time, and whether the coefficient is changed or not can be set to be adjusted at any time. In a certain temperature control period, when the angle of the air door is large and the opening coefficient is large at the same time, and the opening angle of the air door exceeds 90 degrees after calculation, the air door can be opened to the maximum 90 degrees, and the frequency of the compressor can be controlled to be increased, the wind speed of the fan can be controlled to be increased, and the like to perform parallel temperature control.
And step S808, continuously monitoring the temperature of the refrigerating chamber, and if the temperature difference between the actual refrigerating temperature and the set refrigerating temperature (the preset temperature of the chamber) is more than 2.5 ℃, indicating that the temperature is not effectively reduced, executing feedback operation. For example, the opening degree of the air door of the refrigerator is adjusted to 90 °, and when the difference between the measured temperature of the refrigerating chamber and the preset refrigerating temperature is reduced to a second preset temperature threshold, the opening degree of the air door of the refrigerator is adjusted back to the opening degree calculated according to the chamber demand coefficient, the ambient temperature coefficient and the door opening coefficient after a preset time interval. The opening degree of an air door of the refrigerator can be increased by a preset value; the opening degree of the air door after the preset value is increased is smaller than or equal to 90 degrees, and when the difference value between the actually measured temperature of the refrigerating chamber and the preset refrigerating temperature is reduced to a second preset temperature threshold value, the opening degree of the air door of the refrigerator is adjusted back to the opening degree of the air door calculated according to the chamber demand coefficient, the environment temperature coefficient and the door opening coefficient after the preset time interval. Based on this, can realize accurate effective accuse temperature under the condition of the little temperature fluctuation that appears when room temperature is close to preset cold-stored temperature.
Example 3
In correspondence with the damper control method described in fig. 2, the present embodiment provides a damper control device, as shown in the block diagram of the damper control device in fig. 9, which includes:
the monitoring module 10 is used for monitoring whether a chamber demand coefficient, an environment temperature coefficient and a door opening coefficient are changed or not in a precise control mode;
the processing module 20 is connected to the monitoring module 10 and is used for calculating the opening degree of the air door when at least one of the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient is changed so as to adjust the air door of the refrigerator; and the opening degree of the air door is determined according to the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient.
This embodiment still provides a refrigerator, including this air door controlling means to when realizing combining indoor actual temperature, ambient temperature, refrigerator switch door in room, carry out feed back in advance and preliminary treatment to the temperature control process in the refrigerator, make indoor temperature fluctuation diminish in room, temperature control is more stable, and does not need higher cost, and it is better to eat the material and deposit the effect.
Example 4
The embodiment of the present invention provides software for executing the technical solutions described in the above embodiments and preferred embodiments.
Embodiments of the present invention provide a non-volatile computer storage medium having stored thereon computer-executable instructions that can perform a damper control method of any of the above method embodiments.
The storage medium stores the software, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
The product can execute the method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (15)
1. A method of damper control, the method comprising:
monitoring the actually measured temperature of the refrigerating chamber; when the difference value between the measured temperature of the refrigerating chamber and the preset refrigerating temperature is smaller than or equal to a first preset temperature threshold value, triggering to enter a precise control mode;
monitoring whether a chamber demand coefficient, an environment temperature coefficient and a door opening coefficient are changed or not in a precise control mode;
when at least one of the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient is changed, calculating the opening degree of the air door so as to adjust the air door of the refrigerator; the opening degree of the air door is determined according to the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient; the compartment demand coefficient is a refrigeration demand coefficient or a temperature change demand coefficient; when the compartment demand coefficient is a freezing demand coefficient, the air door of the refrigerator is a freezing air door; when the compartment demand coefficient is the variable temperature demand coefficient, the air door of the refrigerator is a variable temperature air door;
continuously monitoring the actually measured temperature of the refrigerating chamber after a preset time period; if the difference value between the measured temperature of the refrigerating chamber and the preset refrigerating temperature is larger than a second preset temperature threshold value, performing feedback operation on the air door to reduce the temperature fluctuation in the refrigerating chamber; wherein the second preset temperature threshold is less than the first preset temperature threshold.
2. The method of claim 1, wherein monitoring whether there is a change in the compartment demand factor comprises:
acquiring the actually measured temperature of the compartment;
determining the compartment demand coefficient according to the difference value between the compartment measured temperature and the compartment preset temperature; and the corresponding relation between the difference value and the chamber requirement coefficient is preset.
3. The method of claim 1, wherein monitoring whether the ring temperature coefficient has changed comprises:
collecting the ambient temperature;
determining the environment temperature coefficient according to the environment temperature; wherein, the corresponding relation between the environment temperature and the environment temperature coefficient is preset.
4. The method of claim 1, wherein monitoring whether the door opening coefficient changes comprises:
monitoring whether the refrigerator has door opening action or not;
if yes, determining the door opening duration after the refrigerator is closed, and determining the door opening coefficient according to the door opening duration; and presetting the corresponding relation between the door opening time and the door opening coefficient.
5. The method of claim 1, wherein calculating a damper opening when there is a change in at least one of the compartment demand coefficient, the loop temperature coefficient, and the door opening coefficient comprises:
calculating an opening coefficient according to the changed compartment demand coefficient, the changed environment temperature coefficient and the changed door opening coefficient;
and calculating to obtain a new air door opening degree according to the opening degree coefficient and the current air door opening degree.
6. The method of claim 5, wherein calculating an opening coefficient based on the changed compartment demand coefficient, the ambient temperature coefficient, and the door opening coefficient comprises:
the opening coefficient = the compartment demand coefficient, the ring temperature coefficient, and the door opening coefficient.
7. The method of claim 1, wherein after calculating the damper opening, the method further comprises:
and if the calculated new opening degree of the air door exceeds the preset opening degree, adjusting the air door of the refrigerator according to the preset opening degree.
8. The method of claim 1 or 7, wherein after calculating the damper opening, the method further comprises:
and if the calculated new air door opening degree exceeds the preset maximum opening degree, increasing the running frequency of the compressor and the wind speed of the fan.
9. The method of claim 1, wherein if the difference between the measured temperature of the refrigerated compartment and the preset refrigerated temperature is greater than a second preset temperature threshold, performing a feedback operation on the damper comprising:
adjusting the opening degree of the air door of the refrigerator to a preset maximum opening degree;
when the difference value between the actually measured temperature of the refrigerating chamber and the preset refrigerating temperature is reduced to the second preset temperature threshold value, the air door opening degree of the refrigerator is adjusted back to the air door opening degree calculated according to the chamber demand coefficient, the environment temperature coefficient and the door opening coefficient after a preset time interval.
10. The method of claim 1, wherein if the difference between the measured temperature of the refrigerated compartment and the preset refrigerated temperature is greater than a second preset temperature threshold, performing a feedback operation on the damper comprising:
increasing the opening degree of a damper of the refrigerator by a preset value; the opening degree of the air door after the preset value is increased is smaller than or equal to the preset highest opening degree;
when the difference value between the actually measured temperature of the refrigerating chamber and the preset refrigerating temperature is reduced to the second preset temperature threshold value, the opening degree of the air door of the refrigerator is adjusted back to the opening degree of the air door calculated according to the chamber demand coefficient, the environment temperature coefficient and the door opening coefficient after a preset time interval.
11. The method of claim 1, further comprising:
continuously monitoring the actually measured temperature of the refrigerating chamber in a precise control mode;
and if the difference value between the actually measured temperature of the refrigerating chamber and the preset refrigerating temperature is greater than a first preset temperature threshold value, triggering to exit the fine control mode and entering a normal temperature control mode.
12. The method of claim 1, further comprising:
in the fine control mode, periodically monitoring whether the chamber demand coefficient and the ring temperature coefficient are changed.
13. A damper control device for realizing the damper control method according to any one of claims 1 to 12, characterized by comprising:
the monitoring module is used for monitoring whether a compartment demand coefficient, a ring temperature coefficient and a door opening coefficient are changed or not in a precise control mode;
the processing module is used for calculating the opening degree of the air door when at least one of the chamber requirement coefficient, the environment temperature coefficient and the door opening coefficient is changed so as to adjust the air door of the refrigerator; and the opening degree of the air door is determined according to the compartment demand coefficient, the environment temperature coefficient and the door opening coefficient.
14. A refrigerator characterized in that it comprises the damper control apparatus of claim 13.
15. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 12.
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| CN115342591B (en) * | 2022-08-04 | 2024-02-06 | 安徽康佳同创电器有限公司 | Energy-saving and noise-reducing control method and device for refrigerator, refrigerator and medium |
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| JPH0518649A (en) * | 1991-07-09 | 1993-01-26 | Matsushita Refrig Co Ltd | Controlling device for refrigerated-cold storage cabinet |
| CN102620519B (en) * | 2012-04-13 | 2014-03-05 | 四川长虹空调有限公司 | Temperature precision control method for frequency conversion refrigerator |
| CN103940196B (en) * | 2014-04-25 | 2017-01-11 | 合肥华凌股份有限公司 | Method for controlling refrigerator and refrigerator |
| CN104534803B (en) * | 2014-12-18 | 2017-02-22 | 合肥美的电冰箱有限公司 | Refrigerator and air capacity control method and device thereof |
| JP2018109487A (en) * | 2017-01-06 | 2018-07-12 | パナソニックＩｐマネジメント株式会社 | refrigerator |
| CN111351299A (en) * | 2020-03-25 | 2020-06-30 | 合肥美的电冰箱有限公司 | Refrigeration equipment, temperature control method and temperature control device thereof, and storage medium |
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