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CN-122015378-A - Transparent ice block preparation control method and refrigerator

CN122015378ACN 122015378 ACN122015378 ACN 122015378ACN-122015378-A

Abstract

The invention provides a transparent ice block preparation control method and a refrigerator, wherein the method comprises the steps of responding to an ice making instruction, controlling an ice making device to execute an ice making process, acquiring the temperature of a water body in an ice making box in the ice making device in the ice making process, and controlling a heater to execute a pulse heating control program when the temperature of the water body enters a phase change temperature interval so as to obtain transparent ice blocks, wherein the pulse heating control program comprises the steps of executing pulse heating operation in at least two different phase change temperature subintervals in the phase change temperature interval, and controlling the heater to run in a mode of repeatedly executing heating pulses for the phase change temperature subintervals. The method is characterized in that heating pulses are repeatedly executed for a plurality of times in a phase transition temperature range of water, the growth speed and direction of ice crystals are actively interfered, an overflow path is created for dissolved gas, the problem of white turbidity of ice cubes is solved, and the ice cubes with high transparency are manufactured.

Inventors

  • SHANG DIANBO

Assignees

  • 长虹美菱股份有限公司

Dates

Publication Date
20260512
Application Date
20260305

Claims (10)

  1. 1. A method of controlling the preparation of transparent ice cubes, comprising: Controlling the ice making device to execute an ice making process in response to the ice making instruction; acquiring the temperature of a water body in an ice making box in the ice making device in the ice making process; when the water temperature enters a preset phase change temperature interval, controlling a heater of the ice making box to execute a pulse heating control program so as to obtain transparent ice cubes; the pulse heating control program comprises the steps of executing pulse heating operation in at least two different phase-change temperature subintervals in the phase-change temperature interval, and controlling the heater to run in a mode of repeatedly executing heating pulses for a plurality of times for each phase-change temperature subinterval, wherein the upper limit of the phase-change temperature interval is the freezing point of water, and the lower limit of the phase-change temperature interval is lower than the freezing point; The execution mode of the heating pulse is that the heater is controlled to be started when the water body temperature reaches a heating start threshold corresponding to the current phase-change temperature subinterval, and the heater is controlled to be stopped when the water body temperature reaches a heating stop threshold corresponding to the current phase-change temperature subinterval.
  2. 2. The transparent ice cube preparation control method of claim 1, wherein the phase transition temperature interval is 0 ℃ to-5 ℃; The pulse heating operation is performed in at least two different phase transition temperature sub-intervals within the phase transition temperature interval, and before that, the pulse heating operation comprises: determining the at least two different phase transition temperature subintervals, wherein the two different phase transition temperature subintervals comprise a first phase transition temperature subinterval and a second phase transition temperature subinterval, and the first phase transition temperature subinterval and the second phase transition temperature subinterval have different temperature ranges.
  3. 3. The transparent ice cube preparation control method of claim 2, wherein the first phase transition temperature subinterval is from 0 ℃ to-2 ℃ and the second phase transition temperature subinterval is from-3 ℃ to-5 ℃.
  4. 4. The transparent ice cube preparation control method according to claim 2, wherein said controlling said heater to operate in a manner to repeatedly perform a plurality of heating pulses comprises: Controlling the heater to run in a mode of repeatedly executing a plurality of first heating pulses for the first phase transition temperature subinterval; And controlling the heater to operate in a mode of repeatedly executing a plurality of second heating pulses for the second phase change temperature subinterval.
  5. 5. The transparent ice-making control method according to claim 4, wherein said controlling said heater to operate in such a manner that a plurality of first heating pulses are repeatedly performed, comprises: Comparing the water body temperature with a first heating start threshold and a first heating stop threshold in the first phase transition temperature subinterval; when the water temperature reaches the first heating start threshold, controlling the heater to start; when the water temperature reaches the first heating stop threshold, controlling the heater to stop; wherein the first heating start threshold is 0 ℃, and the first heating stop threshold is-2 ℃.
  6. 6. The transparent ice making control method according to claim 4, wherein said controlling said heater to operate in such a manner as to repeatedly perform a plurality of second heating pulses, comprises: Comparing the water body temperature with a second heating start threshold and a second heating stop threshold in the second phase temperature subinterval; when the water temperature reaches the second heating start threshold, controlling the heater to start; when the water temperature reaches the second heating stop threshold, controlling the heater to stop; wherein the second heating start threshold is-3 ℃, and the second heating stop threshold is-5 ℃.
  7. 7. The transparent ice cube preparation control method according to claim 1, wherein the controlling the heater of the ice making housing to execute a pulse heating control program comprises: setting the repeated execution times of the heating pulse; Controlling the heater to execute heating pulses in the phase transition temperature subinterval based on the repeated execution times; wherein the number of times of repeated execution is 10-20 times.
  8. 8. The transparent ice cube preparation control method according to claim 1, wherein said controlling the heater of the ice making housing to execute a pulse heating control program to obtain transparent ice cubes comprises: Monitoring the water body temperature after the pulse heating control program is completed; and if the water temperature reaches the freezing temperature, controlling the ice making device to stop refrigeration, and executing the ice removing operation.
  9. 9. The method of claim 1, wherein the step of obtaining the temperature of the water body in the ice making housing of the ice making device comprises: Collecting temperature signals through a temperature sensor arranged at the bottom of the ice making box; and processing the temperature signal to obtain the water body temperature.
  10. 10. A refrigerator, comprising: an ice making device including an ice making case and a heater; the temperature acquisition module is used for acquiring the temperature of the water body in the ice making box; A control module configured to: Controlling the ice making device to execute an ice making process in response to the ice making instruction; acquiring the temperature of a water body in an ice making box in the ice making device in the ice making process; when the water temperature enters a preset phase change temperature interval, controlling a heater of the ice making box to execute a pulse heating control program so as to obtain transparent ice cubes; the pulse heating control program comprises the steps of executing pulse heating operation in at least two different phase-change temperature subintervals in the phase-change temperature interval, and controlling the heater to run in a mode of repeatedly executing heating pulses for a plurality of times for each phase-change temperature subinterval, wherein the upper limit of the phase-change temperature interval is the freezing point of water, and the lower limit of the phase-change temperature interval is lower than the freezing point; The execution mode of the heating pulse is that the heater is controlled to be started when the water body temperature reaches a heating start threshold corresponding to the current phase-change temperature subinterval, and the heater is controlled to be stopped when the water body temperature reaches a heating stop threshold corresponding to the current phase-change temperature subinterval.

Description

Transparent ice block preparation control method and refrigerator Technical Field The application relates to the technical field of refrigeration, in particular to a transparent ice block preparation control method and a refrigerator. Background The household refrigerator ice making device is characterized in that an ice making unit is additionally arranged in the freezing chamber, so that the requirement of consumers on convenient ice making is met, the ice making device comprises an automatic ice making machine and an ice making box, the automatic ice making machine can automatically complete water injection, the ice making box needs manual water injection, and the ice making box and the automatic ice making machine both depend on the low-temperature environment of the freezing chamber to cool the water temperature to below 0 ℃ so as to manufacture ice cubes for eating. The ice cubes produced by the device are required by users in terms of transparency and optical quality, the ice making process relies on natural freezing of water in a low-temperature environment, water in an automatic ice maker or ice making box is solidified from outside to inside under the low-temperature effect of a freezing chamber, and in the ice making mode, the water undergoes rapid temperature drop and phase change is completed. Some of the schemes also contemplate the addition of food grade surfactants to alter the ice water interface properties, either by pre-filtering the water source to reduce impurities, or by optimizing the freezing rate to improve ice crystal structure. However, the above method or pretreatment process, or introducing additional food safety consideration, when ice making water is frozen rapidly, the gas dissolved in the ice making water cannot escape effectively, and the unordered ice crystal growing in the ice making water wraps the gas and impurities and extrudes the gas and impurities to the center of the ice, so that the ice making water becomes cloudy and has low transparency. Disclosure of Invention The application provides a transparent ice block preparation control method and a refrigerator, which aim to solve the problems of white turbidity and low transparency of ice blocks. In a first aspect, the present application provides a method for controlling the preparation of transparent ice cubes, comprising: Controlling the ice making device to execute an ice making process in response to the ice making instruction; acquiring the temperature of a water body in an ice making box in the ice making device in the ice making process; when the water temperature enters a preset phase change temperature interval, controlling a heater of the ice making box to execute a pulse heating control program so as to obtain transparent ice cubes; the pulse heating control program comprises the steps of executing pulse heating operation in at least two different phase-change temperature subintervals in the phase-change temperature interval, and controlling the heater to run in a mode of repeatedly executing heating pulses for a plurality of times for each phase-change temperature subinterval, wherein the upper limit of the phase-change temperature interval is the freezing point of water, and the lower limit of the phase-change temperature interval is lower than the freezing point; The execution mode of the heating pulse is that the heater is controlled to be started when the water body temperature reaches a heating start threshold corresponding to the current phase-change temperature subinterval, and the heater is controlled to be stopped when the water body temperature reaches a heating stop threshold corresponding to the current phase-change temperature subinterval. The method comprises the steps of controlling a heater to repeatedly execute heating pulses for a plurality of times in a phase transition temperature range of water in at least two subintervals, actively intervening the growth speed and direction of ice crystals, and creating escape paths for dissolved gas, so that the problem of white turbidity of ice cubes is solved, and high-transparency ice cubes are manufactured. In some possible embodiments, the phase transition temperature interval is 0 ℃ to-5 ℃; The pulse heating operation is performed in at least two different phase transition temperature sub-intervals within the phase transition temperature interval, and before that, the pulse heating operation comprises: determining the at least two different phase transition temperature subintervals, wherein the two different phase transition temperature subintervals comprise a first phase transition temperature subinterval and a second phase transition temperature subinterval, and the first phase transition temperature subinterval and the second phase transition temperature subinterval have different temperature ranges. The phase change temperature interval is limited to be 0 ℃ to-5 ℃, so that the intervention of the phase change process of freezing water into