CN113970220A - Refrigerator and ice making control method thereof - Google Patents
Refrigerator and ice making control method thereof Download PDFInfo
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- CN113970220A CN113970220A CN202111256260.1A CN202111256260A CN113970220A CN 113970220 A CN113970220 A CN 113970220A CN 202111256260 A CN202111256260 A CN 202111256260A CN 113970220 A CN113970220 A CN 113970220A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 159
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 238000007710 freezing Methods 0.000 claims description 31
- 230000008014 freezing Effects 0.000 claims description 31
- 238000001514 detection method Methods 0.000 claims description 9
- 238000010257 thawing Methods 0.000 claims description 9
- 238000012937 correction Methods 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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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
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C1/00—Producing ice
- F25C1/22—Construction of moulds; Filling devices for moulds
- F25C1/24—Construction of moulds; Filling devices for moulds for refrigerators, e.g. freezing trays
- F25C1/246—Moulds with separate grid structure
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
-
- 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
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
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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
- F25D29/005—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
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C2600/00—Control issues
- F25C2600/04—Control means
-
- 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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- 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)
- Production, Working, Storing, Or Distribution Of Ice (AREA)
Abstract
The invention discloses a refrigerator and an ice making control method thereof, wherein the refrigerator comprises: a box body; an ice maker including a water supply system and an ice making system; the water supply system comprises a water box, a water delivery assembly and a water temperature sensor; the ice making system comprises an ice making box and an ice making temperature sensor; a controller configured to: in response to receiving an ice making instruction, detecting a current water temperature through a water temperature sensor, and detecting a current ice making temperature through an ice making temperature sensor; controlling the water delivery assembly to inject a preset amount of water into the ice making box; determining target ice making time according to the current water temperature, the current ice making temperature and the specification parameters of ice grid cells of the ice making box; when the water injection is determined to be finished, timing is started to obtain the accumulated ice making time; when it is determined that the accumulated ice making time reaches the target ice making time, it is determined that ice making is completed. By adopting the embodiment of the invention, whether ice making is finished or not can be accurately detected.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator and an ice making control method thereof.
Background
Refrigerators are household appliances commonly used in life of people, and more refrigerators are provided with ice makers. At present, when an ice maker in a refrigerator makes ice, whether ice making is finished or not is mostly determined by judging whether accumulated ice making time reaches a preset fixed time, but when a user uses water with higher temperature to make ice or the ice making temperature is increased, whether ice making is finished or not is determined by the fixed ice making time, the situation that ice cubes in an ice making box still belong to an ice-water mixture but are judged to be finished is easy to occur, and therefore, the existing refrigerator cannot accurately detect whether ice making is finished or not.
Disclosure of Invention
The embodiment of the invention provides a refrigerator and an ice making control method thereof, which can accurately detect whether ice making is finished.
An embodiment of the present invention provides a refrigerator including:
a cabinet in which a refrigerating chamber and a freezing chamber are provided;
an ice maker including a water supply system and an ice making system; the water supply system comprises a water box arranged in the refrigerating chamber, a water delivery assembly and a water temperature sensor for detecting the water temperature in the water box; the ice making system comprises an ice making box arranged in the freezing chamber and an ice making temperature sensor used for detecting the ice making temperature; the water inlet of the water delivery assembly is connected with the water box, and the water outlet of the water delivery assembly is connected with the ice making box;
a controller configured to:
in response to receiving an ice making instruction, detecting a current water temperature through the water temperature sensor and detecting a current ice making temperature through the ice making temperature sensor;
controlling the water delivery assembly to inject a preset amount of water into the ice making box;
determining target ice making time according to the current water temperature, the current ice making temperature and the specification parameters of ice grid cells of the ice making box;
when the water injection is determined to be finished, timing is started to obtain the accumulated ice making time;
when it is determined that the accumulated ice making time reaches the target ice making time, it is determined that ice making is completed.
As an improvement of the above scheme, the refrigerator further comprises a defrosting device;
after the starting of timing to obtain an accumulated ice making time when it is determined that the water filling is completed, the controller is further configured to:
and when the freezing chamber is detected to be in a defrosting state, stopping timing until the ice making temperature sensor detects that the current ice making temperature is less than or equal to the sum of the starting temperature of the preset freezing chamber and a first preset temperature difference threshold value, and resuming timing.
As an improvement of the scheme, a door body is arranged on the freezing chamber;
the refrigerator also comprises a door opening and closing detection device for detecting the opening and closing conditions of the door body;
after the starting of timing to obtain an accumulated ice making time when it is determined that the water filling is completed, the controller is further configured to:
when the door opening and closing detection device detects that the door body on the freezing chamber is changed from opening to closing, timing is stopped until the timing recovery condition is met, and timing is recovered; the timing recovery condition is that the door switch detection device detects that the door body on the freezing chamber is closed for more than a preset time, and the ice making temperature sensor detects that the current ice making temperature is less than or equal to the sum of a preset freezing chamber starting temperature and a second preset temperature difference threshold value.
As an improvement of the above scheme, the ice tray unit specification parameters comprise ice tray unit thickness;
determining a target ice making time according to the current water temperature, the current ice making temperature and the specification parameters of the ice tray cells of the ice making box comprises the following steps:
determining current reference ice making time corresponding to the current ice making temperature and the ice grid cell thickness according to preset corresponding relations among the reference ice making time when the water temperature is normal temperature, the ice making temperature and the ice grid cell thickness;
and correcting the current reference ice making time according to the deviation between the current water temperature and the normal temperature to obtain the target ice making time.
As an improvement of the above scheme, the preset corresponding relationship is specifically:
wherein tzb represents the reference ice making time; t isfIndicating the ice making temperature; δ represents the ice grid cell thickness; lambda represents the ice thermal conductivity coefficient, and lambda is 2.2W/mk; h represents the convective heat transfer coefficient of air, and h is 20W/m2k。
As an improvement of the above solution, the correcting the current reference ice making time according to the deviation between the current water temperature and the normal temperature to obtain a target ice making time includes:
calculating the deviation between the current water temperature and the normal temperature;
calculating the proportion between the deviation and a preset deviation threshold value;
calculating the product of the proportion and a preset correction amount;
and correcting the current reference ice making time according to the product to obtain the target ice making time.
As an improvement of the above scheme, the ice making system further comprises an ice turning assembly and an ice storage box;
the controller is further configured to:
and when the ice making is judged to be finished, controlling the ice turning assembly to turn the ice blocks in the ice making box into the ice storage box.
As an improvement of the scheme, the water temperature sensor is arranged at the bottom of the water box.
As an improvement of the above scheme, the ice making temperature sensor is separately arranged from the ice making box, and a distance between the ice making temperature sensor and the ice making box is smaller than a preset distance threshold.
Another embodiment of the present invention provides an ice making control method of a refrigerator, applied to the refrigerator of any one of the above, including:
the controller responds to the received ice making instruction, detects the current water temperature through the water temperature sensor, and detects the current ice making temperature through the ice making temperature sensor;
the controller controls the water conveying assembly to inject a preset amount of water into the ice making box;
the controller determines a target ice making time according to the current water temperature, the current ice making temperature and the specification parameters of the ice grid cells of the ice making box;
the controller starts timing when the controller determines that water injection is completed so as to obtain accumulated ice making time;
the controller determines that ice making is completed when it is determined that the accumulated ice making time reaches the target ice making time.
Compared with the prior art, the refrigerator and the ice making control method thereof provided by the embodiment of the invention have the advantages that when ice making starts, the current water temperature is detected through the water temperature sensor, the current ice making temperature is detected through the ice making temperature sensor, and the target ice making time is determined by combining the current water temperature, the current ice making temperature and the specification parameters of the ice grid cells of the ice making box, so that the ice making time is adaptive to the actual water temperature and the actual ice making temperature, whether the ice making is finished or not can be accurately detected, and the ice making effect is improved.
Drawings
Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic partial cross-sectional view of a refrigerator according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating an ice making control method of a refrigerator according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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.
Referring to fig. 1 and 2, the present embodiment provides a refrigerator 100, including:
a cabinet 10 in which a refrigerating chamber 11 and a freezing chamber 12 are provided;
an ice maker 20 including a water supply system 21 and an ice making system 22; the water supply system 21 comprises a water box 211 arranged in the refrigerating chamber 11, a water delivery assembly 212 and a water temperature sensor 213 for detecting the temperature of water in the water box 211; the ice making system 22 includes an ice making housing 221 provided in the freezing compartment 12 and an ice making temperature sensor 222 for detecting an ice making temperature; the water inlet of the water delivery assembly 212 is connected with the water box 211, and the water outlet of the water delivery assembly 212 is connected with the ice making box 221;
a controller 30 configured to:
s11, in response to receiving the ice making instruction, detecting the current water temperature through the water temperature sensor 213 and the current ice making temperature through the ice making temperature sensor 222;
s12, controlling the water delivery assembly 212 to inject a preset amount of water into the ice making box 221;
s13, determining target ice making time according to the current water temperature, the current ice making temperature and the specification parameters of ice grid cells of the ice making box 221;
s14, when the water injection is determined to be completed, timing is started to obtain the accumulated ice making time;
and S15, when the accumulated ice making time is determined to reach the target ice making time, determining that the ice making is finished.
In particular, the amount of water injection required for ice making may be determined according to the size of the ice cells of the ice making housing 221 and the number of the ice cells, so as to obtain the preset amount.
Illustratively, the water delivery assembly 212 may be a pump assembly including a water pump 2121 and a water injection tube 2122; the water inlet of the water pump 2121 is the water inlet of the water delivery assembly 212 and is used for being connected with the water box 211; the water outlet of the water pump 2121 is connected with one end of a water injection pipe 2122; the other end of the water injection pipe 2122 is a water outlet of the water delivery assembly 212 and is used for connecting with the ice making box 221. When ice is made, the controller 30 controls the water pump 2121 to pump out water in the water tray 211 and input the water into the ice-making tray 221 through the water injection pipe 2122.
In step S13, the specification parameters of the ice tray cells include thicknesses of the ice tray cells, and in a specific implementation, the optimal ice making time corresponding to each water temperature and ice making temperature at each thickness of the ice tray cells is determined in advance through experiments, and a correspondence table is prepared, so that, in ice making, a target ice making time corresponding to the current water temperature, the current ice making temperature and the thickness of the ice tray cells can be obtained through query according to the table. In a specific embodiment, when the ice tray cell thickness is 0.02m, the correspondence between the ice making time and the water temperature, the ice making temperature and the ice tray cell thickness is shown in table 1.
TABLE 1
It should be noted that different filling water temperatures, i.e. the initial temperature of the ice grid water, have an influence on the ice making time, and generally, the temperature of the refrigerating chamber 11 can be roughly regarded as the temperature of water, but if a user just fills new water and the water temperature is high, in this case, the water temperature is not equal to the refrigerating temperature, and the ice making time needs to be prolonged appropriately; different ice grid unit specifications correspond to different ice block sizes, and the ice grid unit specifications also influence the ice making time, generally speaking, the thicker the ice block is, the longer the ice making time is needed; different ice making temperatures also have an effect on the ice making time, with higher ice making temperatures requiring longer ice making times and lower ice making temperatures requiring shorter ice making times. In this embodiment, when ice making starts, the current water temperature is detected by the water temperature sensor 213, the current ice making temperature is detected by the ice making temperature sensor 222, and the current water temperature, the current ice making temperature and the specification parameters of the ice cells of the ice making box 221 are combined to determine the target ice making time, so that the ice making time is adapted to the actual water temperature and the actual ice making temperature, thereby accurately detecting whether ice making is completed, and improving the ice making effect.
As one of the optional embodiments, the refrigerator 100 further includes a defrosting device;
after the start of the timing for the accumulated ice making time when it is determined that the water filling is completed, the controller 30 is further configured to:
s16, when it is detected that the freezing compartment 12 enters the defrosting state, stopping timing, and resuming timing when it is detected by the ice making temperature sensor 222 that the current ice making temperature is less than or equal to the sum of the preset starting temperature of the freezing compartment 12 and the first preset temperature difference threshold.
It should be noted that the first preset temperature difference threshold is a negative number, and the first preset temperature difference threshold may be set according to actual requirements, which is not limited herein.
It can be understood that, when the freezing chamber 12 enters the defrosting state, the temperature in the freezing chamber 12 will rise, thereby affecting the ice making time, and for such a situation, in this embodiment, when it is detected that the freezing chamber 12 enters the defrosting state, timing is stopped, and after defrosting is completed, timing is resumed when it is detected that the current ice making temperature is less than or equal to the sum of the preset starting temperature of the freezing chamber 12 and the first preset temperature difference threshold, so that the accuracy of the ice making time can be effectively ensured.
As an alternative embodiment, a door is disposed on the freezing chamber 12;
the refrigerator 100 further includes a door opening and closing detection device for detecting an opening and closing condition of the door body;
after the start of the timing for the accumulated ice making time when it is determined that the water filling is completed, the controller 30 is further configured to:
s17, when the door switch detection device detects that the door body on the freezing chamber 12 is changed from open to closed, stopping timing, and when detecting that the timing recovery condition is met, recovering timing;
the timing recovery condition is that the door switch detection device detects that the door body on the freezing chamber 12 is closed for more than a preset time, and the ice making temperature sensor 222 detects that the current ice making temperature is less than or equal to the sum of the preset starting temperature of the freezing chamber 12 and a second preset temperature difference threshold value.
It should be noted that the second preset temperature difference threshold is a negative number, and the second preset temperature difference threshold may be set according to actual requirements, which is not limited herein.
As can be understood, opening and closing the door will cause the loss of the cooling capacity in the freezing chamber 12, resulting in the temperature instability in the refrigerator 100, thereby affecting the ice making time, and in view of the above situation, this embodiment stops timing when detecting that the door body of the freezing chamber 12 is opened, and reaches a preset time length when detecting that the distance is closed, and the current ice making temperature is less than or equal to the sum of the preset starting temperature of the freezing chamber 12 and the second preset temperature difference threshold value, and then resumes timing, thereby effectively ensuring the accuracy of the ice making time.
As one of the alternative embodiments, the ice grid cell specification parameter includes ice grid cell thickness;
the determining a target ice making time according to the current water temperature, the current ice making temperature, and the specification parameters of the ice tray cells of the ice making box 221 includes:
s131, determining current reference ice making time corresponding to the current ice making temperature and the ice grid cell thickness according to the reference ice making time when the water temperature is normal temperature and the preset corresponding relation between the ice making temperature and the ice grid cell thickness;
and S132, correcting the current reference ice making time according to the deviation between the current water temperature and the normal temperature to obtain the target ice making time.
The normal temperature means 25 ℃.
In this embodiment, the current reference ice making time corresponding to the current ice making temperature and the thickness of the ice grid cell is calculated, and then the current reference ice making time is corrected according to the deviation between the current water temperature and the normal temperature, so that the target ice making time can be accurately obtained.
Further, the preset corresponding relationship is specifically as follows:
wherein tzb represents the reference ice making time; t isfIndicating the ice making temperature; δ represents the ice grid cell thickness; lambda represents the ice thermal conductivity coefficient, and lambda is 2.2W/mk; h represents the convective heat transfer coefficient of air, and h is 20W/m2k。
It should be noted that the ice making time may be considered to be closely related to the water temperature, the ice making temperature, the thickness of the ice grid cells, the ice thermal conductivity, and the air convection thermal conductivity around the ice making box 221, and the preset corresponding relationship is set according to the relationship among the above parameters, so that the ice making time according with the current actual ice making situation can be accurately obtained.
Further, the correcting the current reference ice making time according to the deviation between the current water temperature and the normal temperature to obtain a target ice making time includes:
s1321, calculating the deviation between the current water temperature and the normal temperature;
s1322, calculating the proportion between the deviation and a preset deviation threshold value;
s1323, calculating the product of the proportion and a preset correction quantity;
and S1324, correcting the current reference ice making time according to the product to obtain the target ice making time.
It should be noted that the preset deviation threshold corresponds to the preset correction amount one to one, for example, if the preset deviation threshold is a positive number, if the deviation between the current water temperature and the normal temperature is a positive number, and the ratio to the preset deviation threshold is 1, the preset correction amount needs to be increased for the current reference ice making time, and if the deviation between the current water temperature and the normal temperature is a negative number, and the ratio to the preset deviation threshold is-1, the preset correction amount needs to be decreased for the current reference ice making time. In a specific implementation, the preset deviation threshold and the preset correction amount may be set according to actual conditions, and are not limited herein.
Illustratively, if the preset deviation threshold is 10 ℃, the corresponding preset correction amount is 10min, and the current water temperature is increased/decreased by 10 ℃ relative to the normal temperature, the corresponding ice making time is prolonged/shortened by 10 min.
As an alternative embodiment, the ice-making system 22 further includes an ice-turning assembly 223 and an ice bank 224;
the controller 30 is further configured to:
s17, controlling the ice-turning assembly 223 to turn the ice cubes in the ice-making box 221 into the ice bank 224 when it is determined that the ice-making is completed.
In the present embodiment, when ice making is completed, ice shedding can be controlled, thereby improving user experience.
As an alternative embodiment, the water temperature sensor 213 is disposed at the bottom of the water box 211, so that the temperature of the water in the water box 211 can be measured.
As an optional embodiment, the ice making temperature sensor 222 is separately disposed from the ice making housing 221, so that the ice making housing 221 can be disassembled and washed, and a distance between the ice making temperature sensor 222 and the ice making housing 221 is smaller than a preset distance threshold, so that it can be ensured that the ice making temperature measured by the ice making temperature sensor 222 is more accurate.
Fig. 3 is a schematic flow chart of an ice making control method for a refrigerator according to an embodiment of the present invention.
The ice making control method of the refrigerator provided by the present embodiment can be applied to the refrigerator according to any of the above embodiments, and includes:
s21, the controller responds to the received ice making instruction, detects the current water temperature through the water temperature sensor and detects the current ice making temperature through the ice making temperature sensor;
s22, controlling the water conveying assembly to inject a preset amount of water into the ice making box by the controller;
s23, the controller determines a target ice making time according to the current water temperature, the current ice making temperature and the specification parameters of the ice grid cells of the ice making box;
s24, when the controller determines that water injection is finished, timing is started to obtain accumulated ice making time;
and S25, when the controller determines that the accumulated ice making time reaches the target ice making time, determining that ice making is finished.
According to the ice making control method of the refrigerator provided by the embodiment of the invention, when ice making starts, the current water temperature is detected through the water temperature sensor, the current ice making temperature is detected through the ice making temperature sensor, and the target ice making time is determined by combining the current water temperature, the current ice making temperature and the specification parameters of the ice grid cells of the ice making box, so that the ice making time is adaptive to the actual water temperature and the actual ice making temperature, whether the ice making is finished or not can be accurately detected, and the ice making effect is improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A refrigerator, characterized by comprising:
a cabinet in which a refrigerating chamber and a freezing chamber are provided;
an ice maker including a water supply system and an ice making system; the water supply system comprises a water box arranged in the refrigerating chamber, a water delivery assembly and a water temperature sensor for detecting the water temperature in the water box; the ice making system comprises an ice making box arranged in the freezing chamber and an ice making temperature sensor used for detecting the ice making temperature; the water inlet of the water delivery assembly is connected with the water box, and the water outlet of the water delivery assembly is connected with the ice making box;
a controller configured to:
in response to receiving an ice making instruction, detecting a current water temperature through the water temperature sensor and detecting a current ice making temperature through the ice making temperature sensor;
controlling the water delivery assembly to inject a preset amount of water into the ice making box;
determining target ice making time according to the current water temperature, the current ice making temperature and the specification parameters of ice grid cells of the ice making box;
when the water injection is determined to be finished, timing is started to obtain the accumulated ice making time;
when it is determined that the accumulated ice making time reaches the target ice making time, it is determined that ice making is completed.
2. The refrigerator of claim 1, further comprising a defrosting device;
after the starting of timing to obtain an accumulated ice making time when it is determined that the water filling is completed, the controller is further configured to:
and when the freezing chamber is detected to be in a defrosting state, stopping timing until the ice making temperature sensor detects that the current ice making temperature is less than or equal to the sum of the starting temperature of the preset freezing chamber and a first preset temperature difference threshold value, and resuming timing.
3. The refrigerator as claimed in claim 1, wherein a door is provided on the freezing chamber;
the refrigerator also comprises a door opening and closing detection device for detecting the opening and closing conditions of the door body;
after the starting of timing to obtain an accumulated ice making time when it is determined that the water filling is completed, the controller is further configured to:
when the door opening and closing detection device detects that the door body on the freezing chamber is changed from opening to closing, timing is stopped until the timing recovery condition is met, and timing is recovered; the timing recovery condition is that the door switch detection device detects that the door body on the freezing chamber is closed for more than a preset time, and the ice making temperature sensor detects that the current ice making temperature is less than or equal to the sum of a preset freezing chamber starting temperature and a second preset temperature difference threshold value.
4. The refrigerator of claim 1, wherein the ice tray cell specification parameters include an ice tray cell thickness;
determining a target ice making time according to the current water temperature, the current ice making temperature and the specification parameters of the ice tray cells of the ice making box comprises the following steps:
determining current reference ice making time corresponding to the current ice making temperature and the ice grid cell thickness according to preset corresponding relations among the reference ice making time when the water temperature is normal temperature, the ice making temperature and the ice grid cell thickness;
and correcting the current reference ice making time according to the deviation between the current water temperature and the normal temperature to obtain the target ice making time.
5. The refrigerator according to claim 4, wherein the preset correspondence is specifically:
wherein tzb represents the reference ice making time; t isfIndicating the ice making temperature; δ represents the ice grid cell thickness; lambda represents the ice thermal conductivity coefficient, and lambda is 2.2W/mk; h represents the convective heat transfer coefficient of air, and h is 20W/m2k。
6. The refrigerator as claimed in claim 4, wherein the correcting the current reference ice making time according to the deviation between the current water temperature and the normal temperature to obtain a target ice making time comprises:
calculating the deviation between the current water temperature and the normal temperature;
calculating the proportion between the deviation and a preset deviation threshold value;
calculating the product of the proportion and a preset correction amount;
and correcting the current reference ice making time according to the product to obtain the target ice making time.
7. The refrigerator of claim 1, wherein the ice making system further comprises an ice flipping assembly and an ice bank;
the controller is further configured to:
and when the ice making is judged to be finished, controlling the ice turning assembly to turn the ice blocks in the ice making box into the ice storage box.
8. The refrigerator as claimed in claim 1, wherein the water temperature sensor is provided at a bottom of the water bucket.
9. The refrigerator of claim 1, wherein the ice making temperature sensor is provided separately from the ice making housing, and a distance between the ice making temperature sensor and the ice making housing is less than a preset distance threshold.
10. An ice making control method of a refrigerator, applied to the refrigerator according to any one of claims 1 to 9, comprising:
the controller responds to the received ice making instruction, detects the current water temperature through the water temperature sensor, and detects the current ice making temperature through the ice making temperature sensor;
the controller controls the water conveying assembly to inject a preset amount of water into the ice making box;
the controller determines a target ice making time according to the current water temperature, the current ice making temperature and the specification parameters of the ice grid cells of the ice making box;
the controller starts timing when the controller determines that water injection is completed so as to obtain accumulated ice making time;
the controller determines that ice making is completed when it is determined that the accumulated ice making time reaches the target ice making time.
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| CN114963649A (en) * | 2022-06-14 | 2022-08-30 | 四川虹美智能科技有限公司 | Method for intelligently making ice series food materials by using refrigerator |
| CN115060033A (en) * | 2022-05-31 | 2022-09-16 | 海信（山东）冰箱有限公司 | Refrigerator and ice making control method of refrigerator |
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