CN113551456B - Unfrozen object temperature detection method, unfreezing device and refrigerator - Google Patents
Unfrozen object temperature detection method, unfreezing device and refrigerator Download PDFInfo
- Publication number
- CN113551456B CN113551456B CN202010327542.5A CN202010327542A CN113551456B CN 113551456 B CN113551456 B CN 113551456B CN 202010327542 A CN202010327542 A CN 202010327542A CN 113551456 B CN113551456 B CN 113551456B
- Authority
- CN
- China
- Prior art keywords
- temperature
- grid
- thawing
- value
- unfrozen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Nutrition Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Electric Ovens (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
Abstract
The invention provides a unfrozen object temperature detection method, a unfreezing device and a refrigerator. The temperature detection method of the unfrozen object comprises the following steps: starting infrared temperature sensing equipment of the thawing device, wherein the infrared temperature sensing equipment is configured to detect the temperature field distribution of a thawing cavity of the thawing device, and the temperature sensing area of the infrared temperature sensing equipment is divided into a preset number of grids in advance; acquiring a detection result of the infrared temperature sensing equipment, and determining a temperature value of each grid according to the detection result; and determining the grid where the unfrozen object is located in the unfreezing device according to the temperature value of the grid, and calculating the detection temperature of the unfrozen object according to the temperature value of the grid where the unfrozen object is located. The method can accurately obtain the temperature value reflecting the actual state of the unfrozen object, has accurate detection, and provides accurate basis for the unfreezing control of a subsequent unfreezing device.
Description
Technical Field
The invention relates to household appliances, in particular to a unfrozen object temperature detection method, a unfreezing device and a refrigerator.
Background
Frozen foods need to be thawed before being processed or consumed. The traditional unfreezing method generally uses a heating device to heat frozen food, but the unfreezing process of the heating device is easy to cause the problem of overheating, the subsequent processing of the food is influenced, and even the nutrition of the food is lost.
Equipment specially used for unfreezing gradually appears in the prior art, for example, unfreezing is carried out through the radio frequency and microwave technology, however, due to the fact that detection of the temperature of unfrozen objects is not accurate enough, the unfreezing equipment cannot guarantee accurate control over the unfreezing process, and therefore the problem of insufficient unfreezing or excessive unfreezing occurs. Therefore, means for accurately detecting the temperature of the unfrozen object is lacked in the prior art.
Disclosure of Invention
An object of the present invention is to provide a method for detecting a temperature of a thawed material, a thawing apparatus and a refrigerator which at least partially solve any one 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 material.
It is another further object of the present invention to simplify the detection process and avoid complex calculations.
Particularly, the invention provides a method for detecting the temperature of unfrozen objects. The method comprises the following steps: starting infrared temperature sensing equipment of the thawing device, wherein the infrared temperature sensing equipment is configured to detect temperature field distribution of a thawing cavity of the thawing device, and temperature sensing areas of the infrared temperature sensing equipment are divided into a preset number of grids in advance; acquiring a detection result of the infrared temperature sensing equipment, and determining a temperature value of each grid according to the detection result; and determining the grid where the unfrozen object is located in the unfreezing device according to the temperature value of the grid, and calculating the detection temperature of the unfrozen object according to the temperature value of the grid where the unfrozen object is located.
Optionally, the step of obtaining a detection result of the infrared temperature sensing device includes: acquiring detection results of a plurality of continuous sampling points of infrared temperature sensing equipment;
the step of determining the temperature value of each grid according to the detection result comprises the following steps: and respectively extracting the temperature sampling value of each grid from the detection result of each sampling point to obtain a temperature sampling value sequence of each grid, and calculating through the temperature sampling value sequence of each grid to obtain the temperature value of each grid.
Optionally, the step of calculating the temperature value of each grid through the temperature sampling value sequence of each grid includes: and screening out extreme values from the temperature sampling value sequence of each grid, and taking the average value or the median value of the residual temperature sampling values of the temperature sampling value sequence of each grid after the extreme values are screened out as the temperature value of the corresponding grid.
Optionally, the step of determining the grid in which the thawed material in the thawing apparatus is located according to the temperature value of the grid comprises: and taking the grid with the temperature value within the preset unfreezing temperature range as the grid where the unfrozen object is located.
Optionally, the step of calculating the detected temperature of the unfrozen object according to the temperature value of the grid where the unfrozen object is located includes: searching the lowest temperature grid with the lowest temperature value from the grids where the unfrozen objects are located, and determining the grid adjacent to the lowest temperature grid; selecting grids with the temperature difference within a set temperature difference threshold value from grids adjacent to the lowest-temperature grid as reference grids; and taking the average value or the median value of the temperature values of the reference grid and the lowest temperature grid as the detection temperature of the unfrozen object.
Optionally, after the step of calculating the detected temperature of the thawed product according to the temperature value of the grid where the thawed product is located, the method further includes: and setting the defrosting power of the defrosting device according to the detection temperature of the unfrozen object.
Optionally, before the step of starting the infrared temperature sensing device of the thawing apparatus, the method further comprises: and acquiring the event that the thawing cavity is put into the thawing substance.
Optionally, the event that the thawing chamber is filled with a thawing substance comprises: an event that a door of the thawing apparatus is closed; and/or the operation interface of the unfreezing device receives a unfreezing trigger signal input by a user; and/or a product detector of the thawing device detects that the thawing chamber is filled with the product.
According to another aspect of the invention, a thawing apparatus is also provided. Should unfreeze the device and include: the system comprises an infrared temperature sensing device, a control device and a control device, wherein the infrared temperature sensing device is configured to detect temperature field distribution of a thawing cavity of a thawing device, and a temperature sensing area of the infrared temperature sensing device is divided into a preset number of grids in advance; and a control device including a memory and a processor, wherein the memory stores a control program, and the control program is executed by the processor to realize any one of the above methods for detecting the temperature of the defrosted object.
According to another aspect of the invention, a refrigerator is also provided. The refrigerator includes: a case defining at least one receiving space therein; the unfreezing device is arranged in the accommodating space and is the unfreezing device.
According to the method for detecting the temperature of the unfrozen object, the infrared temperature sensing equipment with the detection temperature field distribution is adopted as the detection equipment, the temperature sensing area of the infrared temperature sensing equipment is divided into the grids with the preset number in advance, the temperature value of each grid is determined according to the detection result of the infrared temperature sensing equipment, the grid where the unfrozen object is located is determined, the detection temperature of the unfrozen object is further calculated, the temperature value reflecting the actual state of the unfrozen object can be accurately obtained, the detection is accurate, and an accurate basis is provided for the unfreezing control of a subsequent unfreezing device.
Furthermore, the temperature value is calculated according to the temperature sampling value sequence of each grid, so that the detection deviation caused by measurement fluctuation is avoided.
Furthermore, the method for detecting the temperature of the unfrozen object searches the lowest temperature grid with the lowest temperature value from the grids where the unfrozen object is located, determines the grids adjacent to the lowest temperature grid, and selects the reference grid from the grids; the selection mode can determine a detection area capable of reflecting the temperature state of the unfrozen object, so that a temperature value more meeting the judgment criterion requirement of unfreezing control can be obtained.
Still further, the method for detecting the temperature of the unfrozen object can be applied to a refrigerator provided with the unfreezing device, so that the functions of the refrigerator are enriched, and the use convenience of a refrigerator user is improved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic block diagram of a thawing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a defrosting apparatus according to one embodiment of the present invention;
fig. 3 is a schematic structural view of a refrigerator according to one embodiment of the present invention;
FIG. 4 is a schematic diagram of a method of detecting the temperature of a thawed material according to one embodiment of the present invention;
fig. 5 is a schematic diagram of a temperature sensing area of a grid divided by an infrared temperature sensing device in the unfrozen product temperature detection method according to an embodiment of the invention; and
fig. 6 is a schematic usage flow chart of a thawing material temperature detection method according to an embodiment of the present invention.
Detailed Description
FIG. 1 is a schematic block diagram of a thawing apparatus 200 according to an embodiment of the present invention. FIG. 2 is a schematic block diagram of a thawing apparatus 200 according to one embodiment of the present invention. The thawing apparatus 200 of the present embodiment may generally include: the infrared temperature sensing device comprises a shell 201, an infrared temperature sensing device 210 and a control device 220. A thawing chamber 202 is formed in the housing 201 for preventing thawing. The door of the thawing apparatus 200 is not shown in fig. 1 for convenience of illustration of the internal structure. The thawing device 200 may thaw the thawed material placed in the thawing chamber 202 by using rf thawing, microwave thawing, and heating thawing. For example, in the radio frequency thawing, a radio frequency plate may be disposed in the thawing cavity 202, and the thawing may be implemented by outputting a radio frequency signal through the radio frequency plate; for example, microwave thawing can be realized by outputting microwave signals through a magnetron. Since the thawing components of the thawing apparatus 200 are known per se to those skilled in the art, further description thereof is omitted here.
The infrared temperature sensing device 210 is configured to detect a temperature field distribution of the thawing chamber 202 of the thawing apparatus 200. That is, the infrared temperature sensing device 210 can detect the temperature field in the temperature sensing area 211, and similar to the sensing method of forming an infrared image, the temperature of each position of the temperature sensing area 211 is obtained. The temperature sensing area 211 of the infrared temperature sensing device 210 may be divided into a preset number of meshes in advance in this embodiment. The infrared temperature sensing device 210 may be disposed on top of the thawing chamber 202, thereby dividing the thawing chamber 202 into a grid in a top view. Those skilled in the art can arrange the infrared temperature sensing devices 210 on the respective walls of the thawing chamber 202 as required. The temperature sensing lens of the infrared temperature sensing device 210 can sense through the opening of the housing 201.
The control means 220 may generally comprise: a memory 222 and a processor 221, wherein the memory 222 stores a control program 223, and the control program 223 is used for implementing the method for detecting the temperature of the unfrozen product according to the embodiment when being executed by the processor 221. The processor 221 may be a Central Processing Unit (CPU), a Digital Signal Processing (DSP), or the like. The memory 222 is used for storing programs executed by the processor 221. The memory 222 is any medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, or a combination of memories. The control program 223 may be downloaded from a computer-readable storage medium to a corresponding computing/processing device or downloaded and installed to the thawing apparatus 200 via a network (e.g., the internet, a local area network, a wide area network, and/or a wireless network).
Fig. 3 is a schematic structural view of the refrigerator 10 according to an embodiment of the present invention, in which all external door bodies of the refrigerator 10 are removed to show a compartment structure inside the cabinet 100 of the refrigerator 10. The refrigerator 10 may generally include a cabinet 100 defining at least one receiving space, a compartment door for opening and closing a pick-and-place port of each receiving space, respectively, and a thawing device 200 provided in one receiving space. In the illustrated embodiment, the number of thawing devices 200 is one.
In some embodiments, the number of the receiving spaces of the refrigerator 10 may be three. Specifically, the refrigerator 10 may include a cabinet 100 defining a refrigerating compartment 110, a temperature-varying compartment 120, and a freezing compartment 130, and a refrigerating door body, a temperature-varying door body, and a freezing door body for opening and closing the refrigerating compartment 110, the temperature-varying compartment 120, and the freezing compartment 130, respectively. The thawing apparatus 200 can be disposed in the temperature-changing compartment 120. The thawing device 200 can be fixed in the temperature-changing compartment 120 by interference fit or snap-fit with the inner walls of the two vertical sides of the temperature-changing compartment 120. The thawing switch can be arranged on the temperature-changing door body.
In addition, as is well known to those skilled in the art, the refrigerating compartment 110 refers to a storage compartment for preserving food materials at a preservation temperature of 0 to +8 ℃; the freezing chamber 130 is a storage chamber with the preservation temperature of food materials being-20 to-15 ℃; the temperature-changing chamber 120 is a storage chamber capable of changing the storage temperature in a wide range (for example, the adjustment range can be above 4 ℃ and can be adjusted to above 0 ℃ or below 0 ℃), and the storage temperature can generally span the refrigeration temperature, the soft-freezing temperature (generally-4 to 0 ℃) and the freezing temperature, and is preferably-16 to +4 ℃.
In some embodiments, the refrigerator 10 according to the present invention may be an air-cooled refrigerator, with the evaporator of a compression refrigeration system as the cold source. Since the air-cooled refrigerator and the refrigeration system thereof are well known to those skilled in the art, they will not be described in detail in this embodiment.
The thawing apparatus 200 of the present embodiment can preferably adopt a radio frequency thawing mode, thereby being more suitable for the refrigerator 10, enriching the functions of the refrigerator 10, and improving the convenience of the refrigerator user.
The thawing apparatus 200 of the present embodiment uses the infrared temperature sensing device 210 to detect the temperature of the thawed product, improves the temperature processing mode, can accurately obtain the temperature value reflecting the actual state of the thawed product, has accurate detection, and provides an accurate basis for the thawing control of the subsequent thawing apparatus 200. The thawing apparatus 200 of the present embodiment will be further described below with reference to the method for detecting the temperature of the thawed product of the present embodiment.
Fig. 4 is a schematic view of a method for detecting a temperature of a thawed product according to one embodiment of the present invention, which may generally include:
in step S402, the infrared temperature sensing device 210 of the thawing apparatus 200 is started.
Before step S402, an event that the thawing chamber 202 is filled with the thawing substance, that is, it is determined that the thawing substance is filled into the thawing chamber 202, may be acquired. The event that the thawing chamber 202 is filled with the thawing substance may include: the event that the door of the thawing apparatus 200 is closed is also an event that the door is closed after the user puts the thawing substance into the door. Or the operation interface of the thawing apparatus 200 receives the thawing trigger signal input by the user, that is, the user indicates that the thawing apparatus 200 has placed the thawed product through the thawing switch or other operation device. Or the product detector of the thawing apparatus 200 detects that the thawing chamber 202 is filled with the product. The object detector may be a weighing device, a detector for detecting the put object by the change of the dielectric constant in the thawing chamber 202 by the radio frequency generation device, or an image recognition device for determining the put-in thawed object by image recognition, etc. In some embodiments, the thawing device 200 may detect the presence of the thawed material by combining one or more of the above-described approaches.
Fig. 5 is a schematic diagram of a temperature sensing area 211 of a grid divided by an infrared temperature sensing device 210 in the unfrozen product temperature detection method according to an embodiment of the present invention. For the sake of convenience of explanation, the grid of the temperature sensing region 211 in fig. 5 has the serial numbers of its rows and columns as coordinates. For example, (X1, Y1) refers to the grid of the first row and the first column, (X2, Y1) refers to the grid of the second row and the first column, and so on. That is, the temperature sensitive area 211 of the infrared temperature sensing device 210 forms a grid like a matrix. By detecting the temperature of each grid, the temperature of different locations of the thawing chamber 202 can be determined. According to the method, the position of the unfrozen object can be accurately determined through a gridding temperature detection mode, and a temperature detection value reflecting the temperature state of the unfrozen object is obtained. The size of the specific grid and the number of divisions may be configured according to the temperature sensing requirement and the performance of the infrared temperature sensing device 210, the division manner of fig. 5 is only an example, and those skilled in the art may adjust the size and the number according to the need.
Step S404, obtaining a detection result of the infrared temperature sensing device 210, and determining a temperature value of each grid according to the detection result. In order to avoid the fluctuation of data of one-time temperature sampling, a plurality of sampling values can be processed to obtain accurate temperature. For example, the step of acquiring the detection result of the infrared temperature sensing device 210 may include: the detection results of a plurality of consecutive sampling points of the infrared temperature sensing device 210 are obtained. The infrared temperature sensing device 210 may set a sampling period according to its own detection capability, for example, continuously collect the temperatures of a plurality of points at a frequency of 2 to 10 times per second. The sampling point specifically refers to a measurement time at which temperature measurement is performed. The step of determining a temperature value for each grid according to the detection result may include: and respectively extracting the temperature sampling value of each grid from the detection result of each sampling point to obtain a temperature sampling value sequence of each grid, and calculating through the temperature sampling value sequence of each grid to obtain the temperature value of each grid. One method of calculating the grid temperature values may be to screen out extreme values (e.g., maximum values and/or minimum values) from the temperature sample value sequences of each grid, and take an average value or a median value of the remaining temperature sample values of the temperature sample value sequences of each grid after the extreme values are screened out as the temperature value of the corresponding grid.
For example, for a grid of (X5, Y4), the consecutive 10 acquisition point temperatures are: 18.2 degrees, 18.4 degrees, 18.6 degrees, 18.3 degrees, 17.9 degrees, 18 degrees, 18.1 degrees, 18.2 degrees, two extreme values (maximum value and minimum value) are removed, the average value is-18.2 degrees, and the temperature value of the grid (X5, Y4) obtained by the measurement is determined to be-18.2 degrees.
The grids shown in fig. 5 are sequentially detected, and the obtained temperature values of the grids are shown in table 1:
TABLE 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 |
Step S406, determining a grid where the unfrozen object in the thawing apparatus 200 is located according to the grid temperature value, for example, a grid whose temperature value is within a preset thawing temperature range may be used as the grid where the unfrozen object is located. The actual temperature of the unfrozen object is generally below the freezing point, and the temperature difference between the actual temperature and other areas in the unfreezing chamber 202 is obvious, and a person skilled in the art can set a preset unfreezing temperature range according to the freezing point temperature of the unfrozen object, so as to determine the grid where the unfrozen object is located in the unfreezing device 200. With the example temperatures shown in table 1, it can be determined that the region 510 composed of (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) is the region where the thawing substance is present.
And step S408, calculating the detection temperature of the unfrozen object according to the temperature value of the grid where the unfrozen object is located. One optional calculation is: searching the lowest temperature grid with the lowest temperature value from the grids where the unfrozen objects are located, and determining the grid adjacent to the lowest temperature grid; selecting grids with the temperature difference within a set temperature difference threshold value from grids adjacent to the lowest-temperature grid as reference grids; and taking the average value or the median value of the temperature values of the reference grid and the lowest temperature grid as the detection temperature of the unfrozen object.
With the example temperatures shown in table 1, the grid corresponding to the rule lowest temperature point-18.2 degrees is (X5, Y4), and the coordinates adjacent thereto are: (X4, Y3), (X4, Y4), (X4, Y5), (X5, Y3), (X5, Y5), (X6, Y3), (X6, Y4), (X6, Y5), and the region of region 520 in fig. 5 is the region where the lowest temperature grid of the thawed product and the reference grid are located. If the set temperature difference threshold is set to be 2 degrees, the grids with the absolute value of the temperature difference smaller than 2 comprise (X5, Y3), (X5, Y5), (X6, Y3), (X6, Y4), (X6, Y5), and the detection temperature of the unfrozen products is-17.6 ℃. The temperature difference threshold value can be set by those skilled in the art according to the needs, and can be set to be between plus or minus 3 and 0 in general.
By determining the reference grid, the area around the lowest temperature of the unfrozen object can be determined, so that the temperature value which can reflect the actual state of the unfrozen object most can be obtained, the detected temperature obtained through the steps S402 to S408 is used as the basis of unfreezing control, and the unfreezing process can be controlled more accurately. That is, after step S408, the thawing power of the thawing apparatus 200 may be set according to the detected temperature of the thawed material.
Fig. 6 is a schematic usage flow chart of a unfrozen product temperature detection method according to an embodiment of the invention, and when the unfrozen product temperature detection method of the embodiment is used, the following flow chart can be executed:
step S602, obtaining a defrosting start command;
step S604, determining whether the door of the thawing apparatus 200 is in a closed state to avoid signal leakage during thawing. If the door body is not closed well, outputting a door closing prompt;
step S606, starting the infrared temperature sensing device 210 to obtain detection results of a plurality of consecutive sampling points;
step S608, an extreme value is screened out from the temperature sampling value sequence of each grid, the average value or the median value of the residual temperature sampling values after the extreme value is screened out from the temperature sampling value sequence of each grid is taken as the temperature value of the corresponding grid, and the grid where the unfrozen object in the unfreezing device is located is determined according to the temperature value of the grid;
step S610, searching a lowest temperature grid with the lowest temperature value from grids where unfrozen objects are located, and selecting a reference grid with the temperature difference of the lowest temperature grid within a set temperature difference threshold value from grids adjacent to the lowest temperature grid;
step S612, taking the average value or the median of the temperature values of the reference grid and the lowest temperature grid as the detection temperature of the unfrozen object;
and step S614, starting the radio frequency thawing module or other thawing modules, and setting thawing parameters according to the detection temperature of the thawed objects.
The method of the embodiment can determine the detection area capable of reflecting the temperature state of the unfrozen object, so that the temperature value more meeting the judgment criterion requirement of unfreezing control can be obtained, the detection is accurate, and an accurate basis is provided for the unfreezing control of the subsequent unfreezing device 200.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (9)
1. A method for detecting a temperature of a thawed product, comprising:
starting infrared temperature sensing equipment of a thawing device, wherein the infrared temperature sensing equipment is configured to detect temperature field distribution of a thawing cavity of the thawing device, and the temperature sensing area of the infrared temperature sensing equipment is divided into a preset number of grids in advance;
acquiring a detection result of the infrared temperature sensing equipment, and determining a temperature value of each grid according to the detection result;
determining the grid where the unfrozen object is located in the unfreezing device according to the temperature value of the grid, and calculating the detection temperature of the unfrozen object according to the temperature value of the grid where the unfrozen object is located;
the step of calculating the detection temperature of the unfrozen object according to the temperature value of the grid where the unfrozen object is located comprises the following steps:
searching the lowest temperature grid with the lowest temperature value from the grids where the unfrozen objects are located, and determining the grid adjacent to the lowest temperature grid;
selecting grids with the temperature difference within a set temperature difference threshold value from grids adjacent to the lowest temperature grid as reference grids;
and taking the average value or the median value of the temperature values of the reference grid and the lowest temperature grid as the detection temperature of the unfrozen object.
2. The method of claim 1, wherein,
the step of obtaining the detection result of the infrared temperature sensing device includes: acquiring detection results of a plurality of continuous sampling points of the infrared temperature sensing equipment;
the step of determining the temperature value of each grid according to the detection result comprises the following steps: and respectively 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 calculating through the temperature sampling value sequence of each grid to obtain the temperature value of each grid.
3. The method of claim 2, wherein the step of calculating the temperature value for each of the grids from the sequence of temperature sample values for each of the grids comprises:
and screening out extreme values from the temperature sampling value sequence of each grid, and taking the average value or the median value of the residual temperature sampling values of the temperature sampling value sequence of each grid after the extreme values are screened out as the temperature value of the corresponding grid.
4. The method of claim 1, wherein determining the grid within the thawing device where the thawed material is located from the temperature values of the grid comprises:
and taking the grid with the temperature value within a preset unfreezing temperature range as the grid where the unfrozen object is located.
5. The method of claim 1, wherein after the step of calculating the detected temperature of the thawed product from the temperature value of the grid in which the thawed product is located, the method further comprises:
and setting the unfreezing power of the unfreezing device according to the detection temperature of the unfrozen object.
6. The method of claim 1, wherein prior to the step of activating the infrared temperature sensing device of the thawing means, further comprising:
and acquiring the event that the thawing cavity is filled with the thawing substance.
7. The method of claim 6, wherein the event that the thawing chamber is filled with a thawing substance comprises:
an event that a door of the thawing apparatus is closed; and/or
An operation interface of the unfreezing device receives an unfreezing trigger signal input by a user; and/or
And a product detector of the thawing device detects that the thawing cavity is filled with products.
8. A thawing apparatus, comprising:
the system comprises an infrared temperature sensing device, a control device and a control device, wherein the infrared temperature sensing device is configured to detect the temperature field distribution of a 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 comprising a memory and a processor, wherein the memory stores a control program, and the control program is used for realizing the unfrozen product temperature detection method according to any one of claims 1 to 7 when being executed by the processor.
9. A refrigerator, comprising:
a case defining at least one receiving space therein;
a thawing apparatus provided in one of the accommodation spaces, the thawing apparatus according to claim 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010327542.5A CN113551456B (en) | 2020-04-23 | 2020-04-23 | Unfrozen object temperature detection method, unfreezing device and refrigerator |
| PCT/CN2021/088434 WO2021213390A1 (en) | 2020-04-23 | 2021-04-20 | Method for measuring temperature of thawed object, and thawing apparatus, and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010327542.5A CN113551456B (en) | 2020-04-23 | 2020-04-23 | Unfrozen object temperature detection method, unfreezing device and refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113551456A CN113551456A (en) | 2021-10-26 |
| CN113551456B true CN113551456B (en) | 2022-09-20 |
Family
ID=78129415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010327542.5A Active CN113551456B (en) | 2020-04-23 | 2020-04-23 | Unfrozen object temperature detection method, unfreezing device and refrigerator |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113551456B (en) |
| WO (1) | WO2021213390A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005295816A (en) * | 2004-04-07 | 2005-10-27 | Mtec Co Ltd | Thawing device and thawing method |
| JP4979280B2 (en) * | 2006-06-19 | 2012-07-18 | パナソニック株式会社 | Microwave heating device |
| CN101940351B (en) * | 2009-07-10 | 2013-09-25 | 乐金电子(天津)电器有限公司 | Food defrosting method for microwave oven |
| CN102235695A (en) * | 2010-04-27 | 2011-11-09 | 乐金电子(天津)电器有限公司 | Method for selecting microwave oven temperature sensor sampling points |
| CN104235901A (en) * | 2014-09-25 | 2014-12-24 | 广东美的厨房电器制造有限公司 | Microwave oven food thawing control method and microwave oven |
| CN104930804B (en) * | 2015-06-26 | 2017-08-15 | 合肥美的电冰箱有限公司 | Thawing room cell structure, thawing equipment and unfreezing control method |
| CN109323503A (en) * | 2017-07-31 | 2019-02-12 | 青岛海尔智能技术研发有限公司 | Refrigerator |
| CN108679663A (en) * | 2018-05-21 | 2018-10-19 | 广东美的厨房电器制造有限公司 | Microwave oven defrosting control method, micro-wave oven, terminal and computer storage media |
| CN209897300U (en) * | 2019-01-28 | 2020-01-03 | 青岛海尔特种电冰箱有限公司 | Heating device and refrigerator with same |
-
2020
- 2020-04-23 CN CN202010327542.5A patent/CN113551456B/en active Active
-
2021
- 2021-04-20 WO PCT/CN2021/088434 patent/WO2021213390A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021213390A1 (en) | 2021-10-28 |
| CN113551456A (en) | 2021-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109000403B (en) | Thawing method for thawing device | |
| CN113551454B (en) | Unfreezing control method based on temperature, unfreezing device and refrigerator | |
| CN107144086B (en) | refrigerator temperature control method based on food materials and computer storage medium | |
| CN109000407B (en) | Refrigerator with a door | |
| CN108141925B (en) | Multifunctional radio frequency capacitance type heating food preparation device | |
| CN109000396B (en) | Unfreezing method for refrigerator and refrigerator | |
| CN106958974B (en) | Refrigerator temperature control method based on food materials and computer storage medium | |
| CN109000405B (en) | Refrigerator with a door | |
| CN109000397B (en) | Thawing method for thawing device | |
| CN109000417B (en) | Thawing device and refrigerator with same | |
| CN109000418B (en) | Thawing device and refrigerator with same | |
| CN106123470A (en) | The method of indoor food freshness between detection refrigerator storing | |
| Wang et al. | Experimental investigation and mechanism analysis on microwave freeze drying of stem lettuce cubes in a circular conduit | |
| CN113551455B (en) | Unfreezing control method based on temperature, unfreezing device and refrigerator | |
| CN113551456B (en) | Unfrozen object temperature detection method, unfreezing device and refrigerator | |
| US20110185755A1 (en) | Cooling apparatus and frost detecting method thereof | |
| CN108991338B (en) | Thawing method for thawing device | |
| JP2020067217A (en) | refrigerator | |
| CN111043829B (en) | Refrigerating and freezing device and control method thereof | |
| CN109000409B (en) | Thawing device and refrigerator with same | |
| CN109000404B (en) | Refrigerator with a door | |
| EP1378716B1 (en) | A vaccuum insulated refrigerator cabinet and method for assessing thermal conductivity thereof | |
| CN108991339B (en) | Thawing method for thawing device | |
| CN113811731A (en) | Intelligent freezing and refrigerating box using satellite time service temperature sensor | |
| CN109000410B (en) | Refrigerator with a door |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |