WO2021213390A1 - 解冻物的温度检测方法、解冻装置与冰箱 - Google Patents

解冻物的温度检测方法、解冻装置与冰箱 Download PDF

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Publication number
WO2021213390A1
WO2021213390A1 PCT/CN2021/088434 CN2021088434W WO2021213390A1 WO 2021213390 A1 WO2021213390 A1 WO 2021213390A1 CN 2021088434 W CN2021088434 W CN 2021088434W WO 2021213390 A1 WO2021213390 A1 WO 2021213390A1
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Prior art keywords
temperature
grid
thawing
value
thawed object
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PCT/CN2021/088434
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English (en)
French (fr)
Inventor
李春阳
王海娟
苗建林
徐同
Original Assignee
青岛海尔电冰箱有限公司
海尔智家股份有限公司
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Publication of WO2021213390A1 publication Critical patent/WO2021213390A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/003—Arrangement or mounting of control or safety devices for movable devices
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/36—Freezing; Subsequent thawing; Cooling
    • A23L3/365—Thawing subsequent to freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • 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
    • 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
    • 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

Definitions

  • the invention relates to household appliances, in particular to a temperature detection method of thawed objects, a thawing device and a refrigerator.
  • Frozen food needs to be thawed before being processed or eaten.
  • the traditional thawing method generally uses a heating device to heat the frozen food.
  • the thawing process of the heating device is prone to overheating, which affects the subsequent processing of the food and even causes the loss of food nutrition.
  • An object of the present invention is to provide a method for detecting the temperature of a thawed object, a thawing device, and a refrigerator that at least partially solve any of the above technical problems.
  • a further object of the present invention is to enable the detected temperature to accurately reflect the actual state of the thawed object.
  • Another further object of the present invention is to simplify the detection process and avoid complicated calculations.
  • the present invention provides a method for detecting the temperature of a thawed object.
  • the method includes: starting the infrared temperature sensing device of the thawing device, the infrared temperature sensing device is configured to detect the temperature field distribution of the thawing cavity of the thawing device, and the temperature sensing area of the infrared temperature sensing device is divided into a preset number of grids in advance; Obtain the detection result of the infrared temperature sensing device, and determine the temperature value of each grid according to the detection result; determine the grid where the thawed object in the thawing device is located according to the temperature value of the grid, and according to the temperature value of the grid where the thawed object is located Calculate the detection temperature of the thawed object.
  • the step of obtaining the detection result of the infrared temperature sensing device includes: obtaining the detection result of a plurality of consecutive sampling points of the infrared temperature sensing device;
  • the step of determining the temperature value of each grid according to the detection result includes: extracting the temperature sampling value of each grid from the detection result of each sampling point to obtain the temperature sampling value sequence of each grid, and passing through each grid The temperature sampling value sequence of the grid is calculated to obtain the temperature value of each grid.
  • the step of calculating the temperature value of each grid through the temperature sampling value sequence of each grid includes: filtering the extreme value from the temperature sampling value sequence of each grid, and taking the temperature value of each grid The average or median value of the remaining temperature sampling values after excluding extreme values in the temperature sampling value sequence is used as the temperature value of the corresponding grid.
  • the step of determining the grid where the thawed object in the thawing device is located according to the temperature value of the grid includes: using a grid with a temperature value within a preset thawing temperature range as the grid where the thawed object is located.
  • the step of calculating the detection temperature of the thawed object according to the temperature value of the grid where the thawed object is located includes: finding the lowest temperature grid with the lowest temperature value from the grid where the thawed object is located, and determining the lowest temperature grid The grid adjacent to the grid; select the grid with the temperature difference between the lowest temperature grid within the set temperature difference threshold from the grid adjacent to the lowest temperature grid and use it as the reference grid; take the temperature value of the reference grid The average or median value of the temperature value of the lowest temperature grid is used as the detection temperature of the thawed object.
  • the method further includes: setting the thawing power of the thawing device according to the detected temperature of the thawed object.
  • the method further includes: acquiring the event that the thawing cavity is put into the thawed object.
  • the event that the thawing chamber is put into the thawed object includes: the event that the door of the thawing device is closed; and/or the operating interface of the thawing device receives the thawing trigger signal input by the user; and/or the item of the thawing device The detector detects that an item is placed in the thawing cavity.
  • a thawing device includes: an infrared temperature sensing device configured to detect the temperature field distribution of the thawing cavity of the thawing device, and the temperature sensing area of the infrared temperature sensing device is divided into a preset number of grids in advance; a control device, which includes a memory And a processor, a control program is stored in the memory, and when the control program is executed by the processor, it is used to implement any one of the above-mentioned methods for detecting the temperature of a thawed object.
  • a refrigerator is also provided.
  • the refrigerator includes: a box body defining at least one accommodating space therein; a thawing device arranged in the accommodating space, and the thawing device is the above-mentioned thawing device.
  • the temperature detection method of the thawed object of the present invention uses an infrared temperature sensing device capable of detecting temperature field distribution as the detection device, and the temperature sensing area of the infrared temperature sensing device is divided into a preset number of grids according to the infrared temperature sensing device
  • the detection result determines the temperature value of each grid, determines the grid where the thawed object is located, and further calculates the detection temperature of the thawed object, which can accurately obtain the temperature value reflecting the actual state of the thawed object, and the detection is accurate, which is the subsequent thawing
  • the thawing control of the device provides an accurate basis.
  • the temperature detection method of the thawed object of the present invention calculates the temperature value according to the temperature sampling value sequence of each grid, which avoids the detection deviation caused by the measurement fluctuation.
  • the method for detecting the temperature of a thawed object of the present invention searches for the lowest temperature grid with the lowest temperature value from the grid where the thawed object is located, determines the grid adjacent to the lowest temperature grid, and selects the reference grid from the grid Grid; this selection method can determine the detection area that can reflect the temperature state of the thawed object, so that a temperature value that is more in line with the requirements of the thawing control judgment basis can be obtained.
  • the method for detecting the temperature of a thawed object of the present invention can be applied to a refrigerator provided with a thawing device, which enriches the functions of the refrigerator and improves the convenience of users of the refrigerator.
  • Fig. 1 is a schematic structural diagram of a thawing device according to an embodiment of the present invention
  • Figure 2 is a schematic block diagram of a thawing device according to an embodiment of the present invention.
  • Fig. 3 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a method for detecting the temperature of a thawed object according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of the temperature sensing area where the infrared temperature sensing device divides the grid in the method for detecting the temperature of the thawed object according to an embodiment of the present invention.
  • Fig. 6 is a schematic diagram of a use process of a method for detecting the temperature of a thawed object according to an embodiment of the present invention.
  • Fig. 1 is a schematic structural diagram of a thawing device 200 according to an embodiment of the present invention.
  • Fig. 2 is a schematic block diagram of a thawing device 200 according to an embodiment of the present invention.
  • the thawing device 200 of this embodiment may generally include: a housing 201, an infrared temperature sensing device 210, and a control device 220.
  • a thawing cavity 202 is formed in the housing 201 to prevent thawed objects.
  • the door of the thawing device 200 is not shown in FIG. 1.
  • the thawing device 200 may use radio frequency thawing, microwave thawing, and heating thawing methods to defrost the thawed objects placed in the thawing cavity 202.
  • a radio frequency electrode plate can be arranged in the thawing cavity 202, and the radio frequency electrode plate can be used to output a radio frequency signal to realize thawing; for another example, a microwave thawing can be realized by outputting a microwave signal from a magnetron. Since the thawing component of the thawing device 200 is well known to those skilled in the art, it will not be further described here.
  • the infrared temperature sensing device 210 is configured to detect the temperature field distribution of the thawing cavity 202 of the thawing device 200. That is, the infrared temperature sensing device 210 can detect the temperature field in the temperature sensing area 211, similar to the sensing method of forming an infrared image, to obtain the temperature of each position of the temperature sensing area 211.
  • the temperature sensing area 211 of the infrared temperature sensing device 210 may be divided into a preset number of grids in advance.
  • the infrared temperature sensing device 210 may be arranged on the top of the thawing cavity 202, so as to divide the thawing cavity 202 into a grid from a top angle.
  • the infrared temperature sensing device 210 can be installed on each cavity wall of the thawing cavity 202 as needed.
  • the temperature sensing lens of the infrared temperature sensing device 210 can be sensed through the opening of the housing 201.
  • the control device 220 may generally include: a memory 222 and a processor 221, wherein the memory 222 stores a control program 223, and the control program 223 is executed by the processor 221 for implementing the method for detecting the temperature of the thawed object in this embodiment.
  • the processor 221 may be a central processing unit (central processing unit, CPU for short), or a digital processing unit (Digital Signal Processing, DSP), or the like.
  • the memory 222 is used to store a program executed by the processor 221.
  • the memory 222 is any medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer, and can also be a combination of multiple memories.
  • the aforementioned control program 223 may be downloaded from a computer-readable storage medium to a corresponding computing/processing device or downloaded and installed to the defrosting device 200 via a network (for example, the Internet, a local area network, a wide area network, and/or a wireless network).
  • a network for example, the Internet, a local area network, a wide area network, and/or a wireless network.
  • FIG. 3 is a schematic structural diagram of a refrigerator 10 according to an embodiment of the present invention, in which all outer doors of the refrigerator 10 are removed to show the compartment structure in the cabinet 100 of the refrigerator 10.
  • the refrigerator 10 may generally include a box body 100 that defines at least one accommodating space, a compartment door for opening and closing the access ports of each accommodating space, and a thawing device 200 arranged in one accommodating space. In the illustrated embodiment, the number of the thawing device 200 is one.
  • the number of accommodating spaces of the refrigerator 10 may be three.
  • the refrigerator 10 may include a box body 100 defining a refrigerating compartment 110, a temperature-changing compartment 120, and a freezing compartment 130, and a refrigerator for opening and closing the refrigerating compartment 110, the temperature-changing compartment 120, and the freezing compartment 130, respectively.
  • the thawing device 200 may be installed in the temperature-variable compartment 120.
  • the thawing device 200 can be fixed in the temperature-variable compartment 120 by interference fit or clamping with the inner walls of the two vertical sides of the temperature-variable compartment 120.
  • the thawing switch can be set on the variable temperature door.
  • the refrigerating compartment 110 refers to a storage compartment with a storage temperature of 0 ⁇ +8°C for food materials
  • the freezer compartment 130 refers to a storage temperature for food materials ranging from -20 ⁇ -15°C storage compartment
  • variable temperature compartment 120 refers to a storage room whose storage temperature can be changed in a large range (for example, the adjustment range can be above 4°C and can be adjusted to above 0°C or below 0°C)
  • the storage temperature of the room can span refrigeration, soft freezing (generally -4 to 0°C) and freezing temperature, preferably -16 to +4°C.
  • the refrigerator 10 according to the present invention may be an air-cooled refrigerator, and uses an evaporator of a compression refrigeration system as a cold source. Since the air-cooled refrigerator and its refrigeration system are well known to those skilled in the art, they will not be described in detail in this embodiment.
  • the thawing device 200 of this embodiment may preferably adopt a radio frequency thawing method, which is more suitable for the refrigerator 10, enriches the functions of the refrigerator 10, and improves the convenience of the refrigerator users.
  • the thawing device 200 of this embodiment uses the infrared temperature sensing device 210 to detect the temperature of the thawed object, and improves the temperature processing method. It can accurately obtain the temperature value reflecting the actual state of the thawed object, and the detection is accurate. Thawing control provides an accurate basis.
  • the thawing device 200 of this embodiment will be further introduced below in conjunction with the description of the temperature detection method of the thawed object in this embodiment.
  • Fig. 4 is a schematic diagram of a method for detecting the temperature of a thawed object according to an embodiment of the present invention.
  • the method for detecting the temperature of a thawed object may generally include:
  • step S402 the infrared temperature sensing device 210 of the thawing device 200 is started.
  • the event that the thawing cavity 202 is put into the thawed object can be acquired, that is, it is determined that the thawed object is put into the thawing cavity 202.
  • the event that the thawing cavity 202 is put into the thawed object may include: the event that the door of the thawing device 200 is closed, that is, the action of detecting the user closing the door after putting the thawed object in.
  • the operating interface of the thawing device 200 receives the thawing trigger signal input by the user, that is, the user indicates that the thawing device 200 has been placed in the thawing object through a thawing switch or other control device.
  • the article detector of the thawing device 200 detects that the article is placed in the thawing cavity 202.
  • the article detector may be a weighing device, a radio frequency generating device that detects the inserted article through the change of the dielectric constant in the thawing cavity 202, or an image recognition device that determines the thawed article to be put in through image recognition, or the like.
  • the thawing device 200 may integrate one or more of the above methods to detect the put thawed object.
  • FIG. 5 is a schematic diagram of the temperature sensing area 211 divided into grids by the infrared temperature sensing device 210 in the method for detecting the temperature of a thawed object according to an embodiment of the present invention.
  • the grid of the temperature-sensitive area 211 in FIG. 5 uses the sequence numbers of its rows and columns as coordinates.
  • (X1, Y1) refers to the grid in the first row and first column
  • (X2, Y1) refers to the grid in the second row and first column, and so on. That is to say, the temperature sensing area 211 of the infrared temperature sensing device 210 forms a grid similar to a matrix.
  • the temperature at different positions of the thawing cavity 202 can be determined.
  • the method of this embodiment can accurately determine the position of the thawed object through the grid-based temperature detection method, and obtain the temperature detection value reflecting the temperature state of the thawed object.
  • the size of the specific grid and the number of divisions can be configured according to the temperature sensing requirements and the performance of the infrared temperature sensing device 210.
  • the division method in FIG. 5 is only an example, and those skilled in the art can adjust it as needed.
  • step S404 the detection result of the infrared temperature sensing device 210 is obtained, and the temperature value of each grid is determined according to the detection result.
  • the accurate temperature can be obtained by processing multiple sampling values.
  • the step of obtaining the detection result of the infrared temperature sensing device 210 may include: obtaining the detection result of the infrared temperature sensing device 210 at multiple consecutive sampling points.
  • the infrared temperature sensing device 210 can set a sampling period according to its own detection capability, for example, at a frequency of 2 to 10 times per second, to continuously collect the temperature of multiple points.
  • the above-mentioned sampling point specifically refers to the measurement time when the temperature measurement is performed.
  • the step of determining the temperature value of each grid according to the detection result may include: extracting the temperature sampling value of each grid from the detection result of each sampling point to obtain the temperature sampling value sequence of each grid, passing each The temperature sampling value sequence of the grid is calculated to obtain the temperature value of each grid.
  • a method of calculating the temperature value of the grid can be to filter the extreme values (such as the maximum and/or minimum) from the temperature sampling value sequence of each grid, and take the temperature sampling value sequence of each grid to filter out The average or median value of the remaining temperature sampling values after the extreme value is used as the temperature value of the corresponding grid.
  • the temperature of 10 consecutive collection points are: -18.2 degrees, -18.4 degrees -, -18.6 degrees, -18.3 degrees, -18.3 degrees, -17.9 degrees, -18 degrees, -18.1 Degrees, -18.1 degrees, -18.2 degrees, remove the two extreme values (maximum and minimum), calculate the average value as -18.2 degrees, then the temperature value of the grid of (X5, Y4) obtained by this measurement can be determined It is -18.2 degrees.
  • Step S406 Determine the grid where the thawed object in the thawing device 200 is located according to the temperature value of the grid.
  • a grid with a temperature value within a preset thawing temperature range may be used as the grid where the thawed object is located.
  • the actual temperature of the thawed object is generally below the freezing point, which is significantly different from the temperature of other areas in the thawing cavity 202.
  • Those skilled in the art can set a preset thawing temperature range according to the freezing point temperature of the thawed object to determine the location of the thawed object in the thawing device 200 Grid.
  • the area 510 composed of Y3), (X7, Y4), (X7, Y5), and (X7, Y6) is the area where the thawed object is located.
  • step S408 the detected temperature of the thawed object is calculated according to the temperature value of the grid where the thawed object is located.
  • An optional calculation method is: find the lowest temperature grid with the lowest temperature value from the grid where the thawed object is located, and determine the grid adjacent to the lowest temperature grid; from the grid adjacent to the lowest temperature grid Select the grid whose temperature difference with the lowest temperature grid is within the set temperature difference threshold from the grid, as the reference grid; take the temperature value of the reference grid and the average or median value of the temperature value of the lowest temperature grid as the thawing The detection temperature of the object.
  • the grid corresponding to the lowest temperature point of -18.2 degrees according to the rule is (X5, Y4), and the adjacent coordinates are: (X4, Y3), (X4, Y4), (X4, Y5), (X5, Y3), (X5, Y5), (X6, Y3), (X6, Y4), (X6, Y5), and the area of area 520 in Fig. 5 is the lowest temperature grid of thawed objects and The area where the reference grid is located.
  • the set temperature difference threshold is set to 2 degrees
  • the grids whose absolute value of the temperature difference is less than 2 include (X5,Y3), (X5,Y5), (X6,Y3), (X6,Y4), (X6,Y5) ), the detection temperature of the thawed object is -17.6°C.
  • Those skilled in the art can set and set the temperature difference threshold according to needs, and generally can set the temperature difference threshold between plus or minus 3 to 0.
  • the area around the lowest temperature of the thawed object can be determined, so that the temperature value that can best reflect the actual state of the thawed object can be obtained.
  • the detected temperature obtained through step S402 to step S408 is used as the basis for thawing control.
  • the process is controlled more precisely. That is, after step S408, the thawing power of the thawing device 200 can be set according to the detected temperature of the thawed object.
  • FIG. 6 is a schematic diagram of the use process of the method for detecting the temperature of a thawed object according to an embodiment of the present invention.
  • the following process can be executed:
  • Step S602 a defrosting start command is obtained
  • step S604 it is judged whether the door of the thawing device 200 is in the closed state, so as to avoid the leakage of the thawing signal. If the door is not closed properly, it will output a door closing reminder;
  • Step S606 Start the infrared temperature sensing device 210 to obtain the detection results of multiple consecutive sampling points;
  • step S608 the extreme value is filtered from the temperature sampling value sequence of each grid, and the average or median value of the remaining temperature sampling value after filtering the extreme value in the temperature sampling value sequence of each grid is taken as the corresponding grid Grid temperature value, and determine the grid where the thawed object in the thawing device is located according to the grid temperature value;
  • Step S610 searching for the lowest temperature grid with the lowest temperature value from the grid where the thawed object is located, and selecting the grid with the lowest temperature difference from the grid adjacent to the lowest temperature grid within the set temperature difference threshold.
  • Step S612 taking the average or median value of the temperature value of the reference grid and the temperature value of the lowest temperature grid as the detected temperature of the thawed object;
  • step S614 the radio frequency thawing module or other thawing modules are activated, and the thawing parameters are set according to the detected temperature of the thawed object.
  • the method of this embodiment can determine the detection area that can reflect the temperature state of the thawed object, thereby obtaining a temperature value that is more in line with the requirements of the thawing control judgment basis, and the detection is accurate, which provides an accurate basis for the subsequent thawing control of the thawing device 200 .

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Abstract

一种解冻物的温度检测方法、解冻装置与冰箱。其中解冻物的温度检测方法包括：启动解冻装置的红外感温设备，红外感温设备配置成检测解冻装置的解冻腔的温度场分布，并且红外感温设备的感温区域预先被划分为预设数量的网格；获取红外感温设备的检测结果，并根据检测结果确定每个网格的温度值；根据网格的温度值确定解冻装置内解冻物所在的网格，并根据解冻物所在的网格的温度值计算得出解冻物的检测温度。本发明的方法可以准确得出反映解冻物实际状态的温度值，检测准确，为后续解冻装置的解冻控制提供了准确的依据。

Description

解冻物的温度检测方法、解冻装置与冰箱 技术领域
本发明涉及家用电器，特别是涉及一种解冻物的温度检测方法、解冻装置与冰箱。
背景技术
冷冻的食物在加工或者食用前需要进行解冻。传统的解冻方法一般使用加热装置对冷冻食物进行加热，然而加热装置的解冻过程容易出现过度加热的问题，影响了食物的后续加工，甚至使得食物营养损失。
现有技术中也逐渐出现了专用于解冻的设备，例如通过射频、微波的技术进行解冻，然而由于对解冻物温度的检测不够准确，也导致上述解冻设备无法保证对解冻过程进行精确控制，从而出现解冻不足或者解冻过度的问题。因此现有技术中缺乏对解冻物温度进行精确检测的手段。
发明内容
本发明的一个目的是要提供一种至少部分解决上述技术问题任一方面的解冻物的温度检测方法、解冻装置与冰箱。
本发明一个进一步的目的是要使得检测温度能够准确反映解冻物的实际状态。
本发明另一个进一步的目的是要简化检测过程，避免复杂计算。
特别地，本发明提供了一种解冻物的温度检测方法。该方法包括：启动解冻装置的红外感温设备，红外感温设备配置成检测解冻装置的解冻腔的温度场分布，并且红外感温设备的感温区域预先被划分为预设数量的网格；获取红外感温设备的检测结果，并根据检测结果确定每个网格的温度值；根据网格的温度值确定解冻装置内解冻物所在的网格，并根据解冻物所在的网格的温度值计算得出解冻物的检测温度。
可选地，获取红外感温设备的检测结果的步骤包括：获取红外感温设备连续多个采样点的检测结果；
根据检测结果确定每个网格的温度值的步骤包括：从每个采样点的检测结果中分别提取每个网格的温度采样值，得到每个网格的温度采样值序列，通过每个网格的温度采样值序列进行计算得到每个网格的温度值。
可选地，通过每个网格的温度采样值序列进行计算得到每个网格的温度值的步骤包括：从每个网格的温度采样值序列中筛除极值，取每个网格的温度采样值序列中筛除极值后的剩余温度采样值的平均值或中位值作为对应网格的温度值。
可选地，根据网格的温度值确定解冻装置内解冻物所在的网格的步骤包括:将温度值位于预设的预设解冻温度范围内的网格作为解冻物所在的网格。
可选地，根据解冻物所在的网格的温度值计算得出解冻物的检测温度的步骤包括：从解冻物所在的网格中查找温度值最低的最低温网格，并确定与最低温网格相邻的网格；从与最低温网格相邻的网格中挑选出与最低温网格的温差在设定温差阈值内的网格，作为参考网格；取参考网格的温度值和最低温网格的温度值的平均值或中位值作为解冻物的检测温度。
可选地，在根据解冻物所在的网格的温度值计算得出解冻物的检测温度的步骤之后还包括：根据解冻物的检测温度设置解冻装置的解冻功率。
可选地，在启动解冻装置的红外感温设备的步骤之前还包括：获取解冻腔被放入解冻物的事件。
可选地，解冻腔被放入解冻物的事件包括：解冻装置的门体被关闭的事件；和/或解冻装置的操作接口接收到使用者输入的解冻触发信号；和/或解冻装置的物品检测器检测到解冻腔放入物品。
根据本发明的另一个方面，还提供了一种解冻装置。该解冻该装置包括：红外感温设备，配置成检测解冻装置的解冻腔的温度场分布，并且红外感温设备的感温区域预先被划分为预设数量的网格；控制装置，其包括存储器以及处理器，存储器内存储有控制程序，控制程序被处理器执行时，用于实现上述任一种的解冻物的温度检测方法。
根据本发明的另一个方面，还提供了一种冰箱。该冰箱包括：箱体，其内限定有至少一个容纳空间；解冻装置，设置于一个容纳空间内，解冻装置为上述解冻装置。
本发明的解冻物的温度检测方法，采用具备检测温度场分布的红外感温设备作为检测设备，将红外感温设备的感温区域预先被划分为预设数量的网格，根据红外感温设备的检测结确定每个网格的温度值，确定出解冻物所在的网格，并进一步计算出解冻物的检测温度，可以准确得出反映解冻物实际状态的温度值，检测准确，为后续解冻装置的解冻控制提供了准确的依据。
进一步地，本发明的解冻物的温度检测方法，根据每个网格的温度采样值序列计算得到温度值，避免了测量波动导致的检测偏差。
更进一步地，本发明的解冻物的温度检测方法，从解冻物所在的网格中查找温度值最低的最低温网格，并确定与最低温网格相邻的网格，从中挑选出参考网格；这种挑选方式可以确定出能够反映解冻物的温度状态的检测区域，从而可以得到更加符合解冻控制判断依据要求的温度值。
又进一步地，本发明的解冻物的温度检测方法可以应用于设置有解冻装置的冰箱中，丰富了冰箱的功能，提高了冰箱用户的使用便利性。
根据下文结合附图对本发明具体实施例的详细描述，本领域技术人员将会更加明了本发明的上述以及其他目的、优点和特征。
附图说明
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按比例绘制的。附图中：
图1是根据本发明一个实施例的解冻装置的示意性结构图；
图2是根据本发明一个实施例的解冻装置的示意框图；
图3是根据本发明一个实施例的冰箱的示意性结构图；
图4是根据本发明的一个实施例的解冻物的温度检测方法的示意图；
图5是根据本发明的一个实施例的解冻物的温度检测方法中红外感温设备划分了网格的感温区域的示意图；以及
图6是根据本发明一个实施例的解冻物的温度检测方法的使用流程示意图。
具体实施方式
图1是根据本发明一个实施例的解冻装置200的示意性结构图。图2是根据本发明一个实施例的解冻装置200的示意框图。本实施例的解冻装置200一般性地可以包括：壳体201，红外感温设备210、控制装置220。壳体201内形成解冻腔202，以供防止解冻物。为了便于示出内部结构，图1中并未示出解冻装置200的门体。解冻装置200可以利用射频解冻、微波解冻、加热解冻方式对放入解冻腔202内的解冻物进行解冻。例如射频解冻可以在解冻腔202内布置射频极板，利用射频极板输出射频信号实现解冻；又例如 微波解冻可以通过磁控管输出微波信号实现解冻。由于解冻装置200的解冻部件本身为本领域技术人员所习知，在此不做进一步赘述。
红外感温设备210配置成检测解冻装置200的解冻腔202的温度场分布。也即红外感温设备210可以感温区域211内的温度场进行检测，类似于形成红外图像的感应方式，得到感温区域211各个位置的温度。在本实施例中红外感温设备210的感温区域211可以预先被划分为预设数量的网格。红外感温设备210可以设置于解冻腔202的顶部，从而以俯视的角度将解冻腔202划分为网格。本领域技术人员可以根据需要将红外感温设备210设置于解冻腔202的各个腔壁上。红外感温设备210的感温镜头可以通过壳体201的开孔进行感测。
控制装置220可以一般性地可以包括：存储器222以及处理器221，其中存储器222内存储有控制程序223，控制程序223被处理器221执行时用于实现本实施例的解冻物的温度检测方法。处理器221可以是一个中央处理单元(central processing unit，简称CPU)，或者为数字处理单元(Digital Signal Processing，DSP)等等。存储器222用于存储处理器221执行的程序。存储器222是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何介质，也可以是多个存储器的组合。上述控制程序223可以从计算机可读存储介质下载到相应计算/处理设备或者经由网络(例如因特网、局域网、广域网和/或无线网络)下载并安装到解冻装置200。
图3是根据本发明一个实施例的冰箱10的示意性结构图，其中该冰箱10的所有外门体皆被去除，以示出冰箱10的箱体100内的间室结构。冰箱10一般性地可包括限定有至少一个容纳空间的箱体100、用于分别开闭各个容纳空间的取放口的间室门体，以及设置于一个容纳空间的解冻装置200。在图示实施例中，解冻装置200的数量为一个。
在一些实施例中，冰箱10的容纳空间的数量可为三个。具体地，冰箱10可包括限定有冷藏间室110、变温间室120和冷冻间室130的箱体100，以及分别用于开闭冷藏间室110、变温间室120和冷冻间室130的冷藏门体、变温门体和冷冻门体。解冻装置200可设置于变温间室120中。解冻装置200可通过与变温间室120竖向两侧的内壁过盈配合或卡接等方式固定在变温间室120中。解冻开关可设置于变温门体上。
此外，如本领域技术人员所习知的，冷藏间室110是指对食材的保藏温 度为0～+8℃的储物间室；冷冻间室130是指对食材的保藏温度为-20～-15℃的储物间室；变温间室120是指可较大范围地(例如调整范围可在4℃以上，且可调至0℃以上或0℃以下)改变其保藏温度的储物间室，一般其保藏温度可跨越冷藏、软冷冻(一般为-4～0℃)和冷冻温度，优选为-16～+4℃。
在一些实施例中，根据本发明的冰箱10可以为风冷冰箱，并将压缩式制冷系统的蒸发器作为冷源。由于风冷冰箱及其制冷系统为本领域技术人员所习知，在本实施例中不做赘述。
本实施例的解冻装置200可以优选采用射频解冻方式，从而更加适用于冰箱10，丰富了冰箱10的功能，提高了冰箱用户的使用便利性。
本实施例的解冻装置200使用红外感温设备210进行解冻物的温度检测，并改进了温度的处理方式，可以准确得出反映解冻物实际状态的温度值，检测准确，为后续解冻装置200的解冻控制提供了准确的依据。以下结合本实施例的解冻物的温度检测方法的说明，对本实施例的解冻装置200进行进一步介绍。
图4是根据本发明的一个实施例的解冻物的温度检测方法的示意图，本解冻物的温度检测方法一般性地可以包括：
步骤S402，启动解冻装置200的红外感温设备210。
在步骤S402之前，可以获取解冻腔202被放入解冻物的事件，也即确定解冻物放入解冻腔202。解冻腔202被放入解冻物的事件可以包括：解冻装置200的门体被关闭的事件，也即检测用户放入解冻物后关闭门体的动作。或者解冻装置200的操作接口接收到使用者输入的解冻触发信号，也即用户通过解冻开关或其他操控装置指示解冻装置200已放入了解冻物。或者解冻装置200的物品检测器检测到解冻腔202放入物品。该物品检测器可以为称重装置、射频发生装置通过解冻腔202内介电常数的变化检测放入物品的检测器、或者通过图像识别确定放入解冻物的图像识别装置等。在一些实施例中，解冻装置200可以综合上述一种或多种方式来检测放入解冻物。
图5是根据本发明的一个实施例的解冻物的温度检测方法中红外感温设备210划分了网格的感温区域211的示意图。为便于说明，图5中感温区域211的网格以其行列的序号作为坐标。例如(X1,Y1)指第一排第一列的网格，(X2,Y1)指第二排第一列的网格，以此类推。也就是说红外感温设备210的感温区域211形成了类似于矩阵的网格。通过检测每一网格的温度， 可以确定解冻腔202不同位置的温度。本实施例的方法，通过网格化的温度检测方式，可以准确地确定解冻物的位置，并得到反映解冻物温度状态的温度检测值。具体网格的大小以及划分的数量可以根据感温要求以及红外感温设备210的性能进行配置，图5的划分方式仅为例举，本领域技术人员可以根据需要进行调整。
步骤S404，获取红外感温设备210的检测结果，并根据检测结果确定每个网格的温度值。为了避免一次温度采样的数据出现波动，可以通过对多个采样值进行处理，得到准确的温度。例如，获取红外感温设备210的检测结果的步骤可以包括：获取红外感温设备210连续多个采样点的检测结果。红外感温设备210可以根据自身的检测能力设定采样周期，例如以每秒2至10次的频率，连续采集多个点的温度。上述采样点具体指进行温度测量的测量时刻。根据检测结果确定每个网格的温度值的步骤可以包括：从每个采样点的检测结果中分别提取每个网格的温度采样值，得到每个网格的温度采样值序列，通过每个网格的温度采样值序列进行计算得到每个网格的温度值。一种计算网格温度值的方法可以为从每个网格的温度采样值序列中筛除极值(例如最大值和/或最小值)，取每个网格的温度采样值序列中筛除极值后的剩余温度采样值的平均值或中位值作为对应网格的温度值。
例如对于(X5,Y4)的网格，连续10个采集点温度分别：-18.2度，-18.4度-，-18.6度，-18.3度，-18.3度，-17.9度，-18度，-18.1度，-18.1度，-18.2度，去除两个极值(最大值和最小值)，计算平均值为-18.2度，则可以认定本次测量得到的(X5,Y4)的网格的温度值为-18.2度。
依次对图5示出的网格分别进行检测，得到个网格的温度值如表1所示：
表1
  Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8
X1 2.2 2.1 2.2 2.2 2.5 2.3 2.1 2.1
X2 2.4 2.1 2.3 2.1 2 2.1 2.3 2.3
X3 2.2 2.1 2.3 2.3 2 2 2.1 2.4
X4 2.3 -8.9 -9.8 -10.3 -9.6 -7.2 2.1 2.1
X5 2.2 -7.3 -17.2 -18.2 -17.9 -9.3 2.3 2.4
X6 2.3 -6.5 -17.3 -17.5 -17.3 -8.7 2.1 2.4
X7 2.1 -6.9 -7.5 -8.1 -8.3 -7.9 2.3 2.4
X8 2.1 2.2 2.2 2.3 2.4 2.2 2.2 2.4
步骤S406，根据网格的温度值确定解冻装置200内解冻物所在的网格，例如可以将温度值位于预设的预设解冻温度范围内的网格作为解冻物所在的网格。解冻物的实际温度一般位于冰点以下，其与解冻腔202内其他区域的温度差距明显，本领域技术人员可以根据解冻物的冰点温度设置预设解冻温度范围，以便确定解冻装置200内解冻物所在的网格。以表1所示的示例温度，可以确定出由(X4,Y2)、(X4,Y3)、(X4,Y4)、(X4,Y5)、(X4,Y6)、(X5,Y2)、(X5,Y3)、(X5,Y4)、(X5,Y5)、(X5,Y6)、(X6,Y3)、(X6，Y4)、(X6,Y5)、(X6,Y6)、(X7,Y3)、(X7，Y4)、(X7,Y5)、(X7,Y6)组成的区域510为解冻物所在的区域。
步骤S408，根据解冻物所在的网格的温度值计算得出解冻物的检测温度。一种可选的计算方式为：从解冻物所在的网格中查找温度值最低的最低温网格，并确定与最低温网格相邻的网格；从与最低温网格相邻的网格中挑选出与最低温网格的温差在设定温差阈值内的网格，作为参考网格；取参考网格的温度值和最低温网格的温度值的平均值或中位值作为解冻物的检测温度。
以表1所示的示例温度，按照规则最低温度点-18.2度对应的网格为(X5,Y4)，与其相邻的坐标为：(X4,Y3)、(X4,Y4)、(X4,Y5)、(X5,Y3)、(X5,Y5)、(X6,Y3)、(X6,Y4)、(X6,Y5)，以及图5中区域520的区域是解冻物的最低温网格以及参考网格所在的区域。如果将设定温差阈值设定为2度，则温差绝对值小于2的网格包括(X5,Y3)、(X5,Y5)、(X6,Y3)、(X6,Y4)、(X6,Y5)，得出解冻物的检测温度为-17.6℃。本领域技术人员可以根据需要设置设定温差阈值，一般可以将温差阈值设置为正负3至0之间。
通过确定参考网格，可以确定出解冻物最低温度周围的区域，从而可以得到最能够反映解冻物实际状态的温度值，将通过步骤S402至步骤S408得到检测温度作为解冻控制的依据，可以对解冻过程进行更加精确地控制。也即在步骤S408之后，可以根据解冻物的检测温度设置解冻装置200的解冻功率。
图6是根据本发明一个实施例的解冻物的温度检测方法的使用流程示意图，在使用本实施例的解冻物的温度检测方法时，可以执行以下流程：
步骤S602，获取到解冻启动命令；
步骤S604，判断解冻装置200的门体是否处于关闭状态，以避免解冻 的信号泄露。若门体未关好，则输出关门提醒；
步骤S606，启动红外感温设备210，获取连续多个采样点的检测结果；
步骤S608，从每个网格的温度采样值序列中筛除极值，取每个网格的温度采样值序列中筛除极值后的剩余温度采样值的平均值或中位值作为对应网格的温度值，并根据网格的温度值确定解冻装置内解冻物所在的网格；
步骤S610，从解冻物所在的网格中查找温度值最低的最低温网格以及与从与最低温网格相邻的网格中挑选出与最低温网格的温差在设定温差阈值内的参考网格；
步骤S612，取参考网格的温度值和最低温网格的温度值的平均值或中位值作为解冻物的检测温度；
步骤S614，启动射频解冻模块或者其他解冻模块，根据解冻物的检测温度设定解冻参数。
本实施例的方法，可以确定出能够反映解冻物的温度状态的检测区域，从而可以得到更加符合解冻控制判断依据要求的温度值，检测准确，为后续解冻装置200的解冻控制提供了准确的依据。
至此，本领域技术人员应认识到，虽然本文已详尽示出和描述了本发明的多个示例性实施例，但是，在不脱离本发明精神和范围的情况下，仍可根据本发明公开的内容直接确定或推导出符合本发明原理的许多其他变型或修改。因此，本发明的范围应被理解和认定为覆盖了所有这些其他变型或修改。

Claims (10)

  1. 一种解冻物的温度检测方法，包括：
    启动解冻装置的红外感温设备，所述红外感温设备配置成检测所述解冻装置的解冻腔的温度场分布，并且所述红外感温设备的感温区域预先被划分为预设数量的网格；
    获取所述红外感温设备的检测结果，并根据所述检测结果确定每个所述网格的温度值；
    根据所述网格的温度值确定所述解冻装置内解冻物所在的网格，并根据所述解冻物所在的网格的温度值计算得出所述解冻物的检测温度。
  2. 根据权利要求1所述的方法，其中，
    所述获取所述红外感温设备的检测结果的步骤包括：获取所述红外感温设备连续多个采样点的检测结果；
    所述根据所述检测结果确定每个所述网格的温度值的步骤包括：从每个所述采样点的检测结果中分别提取每个所述网格的温度采样值，得到每个所述网格的温度采样值序列，通过所述每个所述网格的温度采样值序列进行计算得到所述每个所述网格的温度值。
  3. 根据权利要求2所述的方法，其中，通过所述每个所述网格的温度采样值序列进行计算得到所述每个所述网格的温度值的步骤包括：
    从每个所述网格的温度采样值序列中筛除极值，取每个所述网格的温度采样值序列中筛除极值后的剩余温度采样值的平均值或中位值作为对应网格的温度值。
  4. 根据权利要求1所述的方法，其中，根据所述网格的温度值确定所述解冻装置内解冻物所在的网格的步骤包括：
    将所述温度值位于预设的预设解冻温度范围内的所述网格作为所述解冻物所在的网格。
  5. 根据权利要求1所述的方法，其中，所述根据所述解冻物所在的网格的温度值计算得出所述解冻物的检测温度的步骤包括：
    从所述解冻物所在的网格中查找温度值最低的最低温网格，并确定与所述最低温网格相邻的网格；
    从与所述最低温网格相邻的网格中挑选出与所述最低温网格的温差在设定温差阈值内的网格，作为参考网格；
    取所述参考网格的温度值和所述最低温网格的温度值的平均值或中位值作为所述解冻物的检测温度。
  6. 根据权利要求1所述的方法，其中，在所述根据所述解冻物所在的网格的温度值计算得出所述解冻物的检测温度的步骤之后还包括：
    根据所述解冻物的检测温度设置所述解冻装置的解冻功率。
  7. 根据权利要求1所述的方法，其中，在所述启动解冻装置的红外感温设备的步骤之前还包括：
    获取所述解冻腔被放入解冻物的事件。
  8. 根据权利要求7所述的方法，其中，所述解冻腔被放入解冻物的事件包括：
    所述解冻装置的门体被关闭的事件；和/或
    所述解冻装置的操作接口接收到使用者输入的解冻触发信号；和/或
    所述解冻装置的物品检测器检测到所述解冻腔放入物品。
  9. 一种解冻装置，包括：
    红外感温设备，配置成检测所述解冻装置的解冻腔的温度场分布，并且所述红外感温设备的感温区域预先被划分为预设数量的网格；
    控制装置，其包括存储器以及处理器，所述存储器内存储有控制程序，所述控制程序被所述处理器执行时，用于实现根据权利要求1至8中任一项所述的解冻物的温度检测方法。
  10. 一种冰箱，包括：
    箱体，其内限定有至少一个容纳空间；
    解冻装置，设置于一个所述容纳空间内，所述解冻装置为根据权利要求9所述的解冻装置。
PCT/CN2021/088434 2020-04-23 2021-04-20 解冻物的温度检测方法、解冻装置与冰箱 WO2021213390A1 (zh)

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