WO2020073741A1

WO2020073741A1 - Refrigerating and freezing apparatus, and method for controlling same

Info

Publication number: WO2020073741A1
Application number: PCT/CN2019/101945
Authority: WO
Inventors: 姜波; 衣尧; 刘浩泉; 王磊
Original assignee: 海尔智家股份有限公司
Priority date: 2018-10-11
Filing date: 2019-08-22
Publication date: 2020-04-16
Also published as: CN111043828A; CN111043828B

Abstract

Disclosed is a refrigerating and freezing apparatus. The refrigerating and freezing apparatus comprises a storage liner (14), a door body and m rows x n columns of distance sensors (16). The control method comprises: detecting an opening/closing state of a door body; when the door body is changed from opening to closing, enabling all distance sensors (16), and detecting the heights d of vacant spaces, which are not occupied by food, below m distance sensors (16) in each column, so as to obtain the heights dnm of m vacant spaces in each column of n columns; and adjusting a magnetic field intensity of a storage compartment according the heights of the vacant spaces. According to the distance sensors, whether new food is placed in the storage compartment when the door body is opened, and the position of the newly placed food are determined, so that the magnetic field of a region where the new food is placed can be adjusted, thus improving food freezing and preservation effects and reducing power consumption.

Description

Refrigeration and freezing device and its control method

Technical field

The invention relates to the technical field of household appliances, in particular to a refrigeration and freezing device and a control method thereof.

Background technique

After the food is stored in the refrigerator for a period of time, it is prone to a series of deterioration reactions such as dry consumption, juice loss, browning, etc., which affects the taste and flavor of the food, and the short preservation time affects the user experience.

Summary of the invention

In view of the above problems, an object of the present invention is to provide a refrigeration and freezing device and a control method thereof that overcome the above problems or at least partially solve the above problems.

A further object of the present invention is to improve the freshness preservation effect of the refrigerated freezing device and reduce energy consumption and cost.

According to an aspect of the present invention, the present invention provides a method for controlling a refrigerated freezing device, wherein the refrigerated freezing device includes:

Storage liner, which defines a storage compartment;

Door body, configured to open or close the storage compartment;

Distance sensors of m rows × n columns are arranged on the top wall of the storage bladder in a matrix distribution, in which the length direction of the storage compartment is denoted as a column and the width direction is denoted as a row, and each distance sensor is configured to detect the storage The distance between the top wall of the compartment and the food placed under the corresponding distance sensor to obtain the height of the empty space under each distance sensor that is not occupied by the food;

Control methods include:

Detect the opening and closing status of the door;

When the door changes from open to closed, turn on all the distance sensors and detect the height d of the m empty spaces under the sensor that are not occupied by the food in each column to obtain the height d _{nm of the} m empty spaces in each column of the n column ;

Adjust the magnetic field strength of the storage compartment according to the height of the empty space.

Optionally, the step of adjusting the magnetic field strength of the storage compartment according to the height of the empty space specifically includes:

_Select the minimum value of the height of the empty space corresponding to each column from the height d _nm of each column of m empty spaces, and record it as d _mink , where k = 1, 2, ..., n;

Calculate the difference between the height D of the storage compartment and the minimum value d _minnk of the selected empty space height, and record it as Dd _k ;

The height D of the storage room Dd _k obtained after the last closed chamber door and the empty space d _mink minimum height difference Dd _k _original comparing _{the original;}

If Dd _k > Dd _{k original} , an electromagnetic field is applied to the storage compartment corresponding to the k-th column, and the height between Dd _{k original} and Dd _k .

Optionally, before the step of applying an electromagnetic field to the storage compartment corresponding to the k-th column and having a height between Dd _k and Dd _k , the method further includes:

Establish a three-dimensional model of the storage compartment, and mark the position of m rows x n columns of distance sensors in the three-dimensional model;

Establish the magnetic field distribution model of the storage room, and superimpose the magnetic field distribution model into the three-dimensional model to obtain the three-dimensional magnetic field distribution model of the storage room;

In the magnetic field distribution model, it is determined that the storage compartment corresponds to the k-th column, and the height of the region between Dd _k and Dd _k corresponds to the region of magnetic field distribution.

Optionally, the refrigerator-freezer also includes:

Two electromagnet groups are respectively arranged on two opposite walls of the storage liner to form a magnetic field in the storage compartment. Each electromagnet group includes multiple electromagnets, and the multiple electromagnets are on the corresponding wall surface Interval distribution

The steps to establish the magnetic field distribution model of the storage compartment include:

Detect the magnetic field area generated by each electromagnet in the storage compartment, and establish the magnetic field distribution model of the storage compartment;

The steps of applying an electromagnetic field to the storage compartment corresponding to the kth column and having a height between Dd _k and Dd _k include:

Determine the spatial position of each electromagnet forming the magnetic field distribution area according to the magnetic field distribution model;

Turn on the electromagnet in the corresponding space position on the wall.

Optionally, the multiple electromagnets in each electromagnet group are distributed in a matrix on the corresponding wall surface, and the multiple electromagnets in the electromagnet group on the two wall surfaces correspond to each other one by one and are arranged oppositely.

Optionally, after calculating the difference Dd _k between the height D of the storage compartment and the selected minimum value d _mink of the empty space, the method further includes:

D _mink minimum height and a height D screened empty space between the recording storerooms difference Dd _k, as the next time the door is opened by the control becomes Dd _{k original} closing process after being used.

Optionally, after applying an electromagnetic field to the storage compartment corresponding to the k-th column and having a height between Dd _k and Dd _k , the method further includes:

Turn on the refrigeration system of the refrigeration unit.

According to another aspect of the present invention, a refrigerated freezing device is also provided, including:

Storage liner, which defines a storage compartment;

Door body, configured to open or close the storage compartment;

Door body opening and closing detection unit, configured to detect the door body opening and closing state;

A controller and a memory. A computer program is stored in the memory, and when the computer program is executed, the controller executes the control method according to any one of the above.

Optionally, the refrigerating and freezing device further includes:

Two electromagnet groups are respectively arranged on two opposite walls of the storage liner to form a magnetic field in the storage compartment. Each electromagnet group includes multiple electromagnets, and the multiple electromagnets are on the corresponding wall surface Interval distribution.

The refrigerating and freezing device and its control method of the present invention judge whether food is newly put in the storage compartment and the position of the newly put food when the door is opened according to the distance sensor, so that the magnetic field of the newly put food area can be adjusted, It can greatly reduce energy consumption while improving the effect of freezing and preservation of ingredients.

Further, in the refrigerator-freezer and its control method of the present invention, a breakthrough in the use of small-sized electromagnets, combined with a matrix-type uniform distribution method, can form a uniformly distributed magnetic field in the storage compartment, and the cost is low, and It can realize the independent control of the magnetic field strength of each electromagnet, which is convenient to adjust the magnetic field strength of the local area of the storage room in combination with the data detected by all the distance sensors.

According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will understand more the above and other objects, advantages, and features of the present invention.

BRIEF DESCRIPTION

Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary but non-limiting manner with reference to the drawings. The same reference numerals in the drawings indicate the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

1 is a schematic structural diagram of a refrigerated freezing device according to an embodiment of the present invention;

2 is a schematic structural diagram of a storage liner of a refrigerated freezing device according to an embodiment of the present invention, wherein two opposite walls of the storage liner are respectively provided with electromagnet sets;

3 is a schematic structural diagram of a distance sensor distributed on a top wall of a gallbladder in a storage according to an embodiment of the present invention;

4 is a schematic diagram of a control method of a refrigerating and freezing device according to an embodiment of the present invention;

5 is a flowchart of a control method of a refrigerator-freezer according to an embodiment of the present invention; and

Fig. 6 is a schematic block diagram of a refrigerating and freezing device according to an embodiment of the present invention.

detailed description

This embodiment first provides a refrigeration and freezing device. The refrigerator according to the embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is a schematic structural diagram of a refrigerating and freezing device according to an embodiment of the present invention.

This embodiment first provides a refrigerated freezing device. The refrigerated freezing device may be a device such as a refrigerator or a freezer that has a refrigerated freezing function. This embodiment uses a refrigerator as an example to describe the general structure of a refrigerating and freezing device. As shown in FIG. 1, the refrigerating and freezing device generally includes a cabinet 10. The cabinet 10 includes a plurality of storage bladders 14, and the storage bladder 14 defines a storage compartment. The storage compartment may be a cold storage compartment, a temperature changing compartment, or a freezing compartment. As shown in FIG. 1, the upper part of the cabinet 10 is provided with a refrigerated liner whose front side is open, and the front side of the refrigerated liner is provided with two left and right refrigerating doors 11 opening and closing the refrigerator compartment; In the room and the freezing room, a temperature changing door 12 for opening or closing the temperature changing room is provided on the front side of the temperature changing room, and a freezing door 13 for opening or closing the freezing room is provided on the front side of the freezing room.

Of course, in some embodiments, the refrigerating and freezing device may be a refrigerator of other structure, or a freezer. The front side of the freezer is open or the upper part is open. The opening of the freezer is provided with a door that can open or close the freezer.

2 is a schematic structural diagram of a storage liner 14 of a refrigerated freezing device according to an embodiment of the present invention, wherein two opposite walls of the storage liner 14 are respectively provided with electromagnet sets, and FIG. 3 is according to the present invention A schematic structural diagram of the distance sensors 16 of the refrigerator-freezer in one embodiment distributed on the top wall of the storage liner 14.

In particular, the refrigerator-freezer of this embodiment further includes a door detector 40 (shown in FIG. 6) and a distance sensor 16. The door detector 40 is configured to detect the closing signal of the door, and thus can sense the opening and closing state of the door. The door detector 40 can be a magnetic sensitive switch matched with the door and configured to match the door's The on-off state changes its on-off signal. The magnetic sensitive switch can also be replaced by a contact switch.

As shown in FIG. 2, the length direction of the storage compartment is denoted as a column, and the width direction is denoted as a row. The distance sensors 16 are m rows × n columns, and the m rows × n columns distance sensors 16 are provided in the storage liner 14 The top wall of the is distributed in a matrix, and each distance sensor 16 is configured to detect the distance between the top wall of the storage compartment and the food placed under the corresponding distance sensor 16, so as to obtain that each distance sensor 16 is not occupied by the food The height of the empty space d _nm .

When the door detector 40 detects the closing signal of the door, all the distance sensors 16 can be turned on, and the distance sensor 16 can be used to detect the distance between the top wall of the storage compartment and the ingredients below the corresponding distance sensor 16 to obtain each The height of the empty space below the distance sensor 16 that is not occupied by food ingredients. If no food is placed in the space below the distance sensor 16, the distance measured by the distance sensor 16 is the height D of the storage compartment, and if food is placed in the space below the distance sensor 16, the distance measured by the sensor 16 is the top wall of the storage compartment The distance to the top of the ingredients is the height of the empty space.

According to the height of the obtained empty space, the height of the foodstuffs placed in different areas of the storage compartment can be known, and thus, the magnetic field strength of the local area (eg, foodstuffs placement area) of the storage compartment can be adjusted.

In some embodiments, the magnetic field of the storage compartment may be formed by an electromagnet 15 distributed on the storage liner. Specifically, the refrigerator-freezer also includes two electromagnet groups, which are respectively disposed on two opposite walls of the storage liner 14 to form an electromagnetic field in the storage compartment. Each electromagnet group includes a plurality of spaced-apart Electromagnet 15. The electromagnet 15 includes an electromagnet core and a coil wound on the electromagnet core, each electromagnet 15 corresponds to an independent power supply, so as to realize an independent switch for each electromagnet 15 and independently control each electromagnet by current intensity 15 magnetic field strength.

As shown in FIG. 2, the electromagnet 15 is embedded in the wall surface of the storage liner 14. The electromagnets 15 on each wall surface can be distributed in a matrix. Two large magnets are provided relative to the two wall surfaces opposite to the storage liner 14. In this embodiment, the breakthrough use of small-sized electromagnets 15 combined with a matrix-type uniform distribution method can form a uniformly distributed magnetic field in the storage compartment, and the cost is low, and each electromagnet can be realized 15 The independent control of the magnetic field strength facilitates the application of electromagnetic fields to the local area of the storage compartment in a highly targeted manner in conjunction with the empty space.

In this embodiment, the storage liner 14 is a frozen liner, and an electromagnet 15 is used to form an electromagnetic field in the frozen liner. The electromagnetic field acts on the freezing process of the food in the frozen liner to improve the freezing effect of the food. Generally, the freezing process of food ingredients is divided into three stages: cooling stage, phase change stage and freezing stage. In the freezing process, especially in the phase transition phase, the larger ice crystals generated by the crystallization will pierce the cell membrane. During the thawing process, cell damage, loss of juice, loss of food flavor and nutrition will occur, resulting in the deterioration of food quality , Especially for some meat and aquatic products with high quality requirements. During the freezing process of food materials, applying electromagnetic fields to the food materials can reduce the supercooling temperature of the food materials and prolong the time to pass the maximum ice crystal band. During this period, small and dense crystal nuclei are formed, which has little effect on the quality of the food and makes the color of the food materials closer. The color of the unfrozen raw ingredients improves the water holding capacity of the ingredients and reduces the loss of juice during the thawing of the ingredients, thereby improving the effect of freezing and freshness of the ingredients.

4 is a schematic diagram of a control method of a refrigerated freezing device according to an embodiment of the present invention.

Based on the refrigerating and freezing device of any of the above embodiments, as shown in FIG. 4, this embodiment also provides a control method of the refrigerating and freezing device, which specifically includes:

S402, detecting the opening and closing state of the door body;

S404, when the door body is changed from open to closed, all the distance sensors 16 are turned on, and the height d of the unoccupied space under the food ingredients under m distance sensors 16 in each column is detected to obtain m empty spaces in each column of the n column The height of d _nm ;

S406: Adjust the magnetic field strength of the storage compartment according to the height of the empty space.

The door detector 40 detects the closing signal of the door, and the door detector 40 can sense the opening and closing state of the door. When the door detector 40 detects the door closing signal, all distance sensors 16 are turned on to obtain the height d _{nm of} m empty spaces in each of the n columns. According to the height of the obtained empty space, the height of the food ingredients in different areas of the storage room can be known, and thus, the magnetic field strength in the local area of the storage room can be adjusted.

In the existing solution, since the food is not placed in the storage room, every time the frozen food is placed, regardless of the space occupied by the food, all electromagnets 15 are turned on, which increases energy consumption and the strength of the formed magnetic field It may be too high, which is not conducive to the freezing and preservation of ingredients. In this embodiment, the distance sensor 16 is introduced to determine the storage condition of the food in the storage room, so that the electromagnetic field of the local area of the storage room is adjusted, which can greatly reduce energy consumption, and can form a suitable for enhancing the preservation of freezing The magnetic field strength of the effect.

In addition, in the embodiment in which two electromagnet groups are arranged on the opposite wall surfaces of the storage liner respectively, by providing a plurality of small-sized electromagnets 15 distributed at intervals on the wall surface, it is convenient to open only the electromagnetic field that forms a magnetic field in the food storage space The iron 15 does not need to open the electromagnet 15 corresponding to the empty space, thereby not only improving the fresh-keeping effect of the ingredients, but also reducing energy consumption and cost.

Specifically, the step of adjusting the magnetic field strength of the storage compartment according to the height of the empty space specifically includes:

Calculate the difference between the height D of the storage compartment and the minimum value d _mink of the selected empty space height, and record it as Dd _k ;

The height Dd _k D a storage room with the door closed on the obtained rear chamber and the height of the empty space d _mink minimum difference Dd _k _original comparing _{the original;}

As shown in FIGS. 2 and 3, the top wall of the storage room is provided with m rows x n columns of distance sensors 16, wherein m and n are both 3, m rows are respectively A1, A2, and A3, and n columns are respectively Columns B1, B2, B3. The minimum value d _{mink of the} height of each vacant space corresponding to each column is selected from the height d _nm of each vacant space of each column, for example, the minimum value d is selected from the three distance sensors 16 in columns B1, A1, A2, and A3 _{In minB1} , the minimum value d _minB2 is selected from the three distance sensors 16 in columns B1, A1, A2, and A3, and the minimum value d _minB3 is selected from the three distance sensors 16 in columns B3, A1, A2, and A3.

By calculating the minimum value d _{mink of the} height of the empty space corresponding to each column, you can know the maximum height of the food stored in the space corresponding to each column.

After determining the minimum value d _mink of the height of the empty space corresponding to each column, then calculate the difference Dd _k between the height D of the storage compartment and the minimum value d _mink of the height of the empty space corresponding to each column to obtain the correspondence of each column The maximum height of the food storage in the space; then the maximum height (Dd _k ) of the food storage in the corresponding space of each column and the minimum value of the height D of the storage compartment and the height of the empty space calculated after the last door closed The difference between the _original d _{mink and the original} Dd _k can be compared, so we can know whether the new food is stored after the door is opened and closed. If Dd _k > Dd _{k original} , it means that the height of the food is increased, indicating that the new food is stored Ingredients, otherwise, no new ingredients are deposited. If a new food material is stored, an electromagnetic field should be applied to the new food material area, that is, an electromagnetic field should be applied to the storage compartment between the _original Dd _k and Dd _k .

For example, the detection value of the A2 distance sensor 16 in column B1 is the smallest, denoted as d _B1A2 , the detection value of the A1 distance sensor 16 in column B2 is the smallest, denoted as d _B2A1 , and the detection value of the A3 distance sensor 16 in column B3 is the smallest, denoted as d _B3A3 , the maximum height for storing food in the space corresponding to row _B1 is Dd _B1 , the maximum height for storing food in the space corresponding to row _B2 is Dd _B2 , and the maximum height for storing food in the space corresponding to row _B3 is Dd _B3 , respectively Dd _B1 , Dd _B2 , Dd _{B3 are} compared with the maximum height Dd _{k of the} food stored in the space corresponding to each column calculated after the last door closed to determine whether the space corresponding to column B1, B2, and B3 is New ingredients were deposited separately.

Assuming that Dd _{B1 is} greater than the _original Dd _k corresponding to column B1, it means that the space corresponding to column B1 contains new ingredients, and the maximum height of the ingredients stored in the space below column B1 is at the position corresponding to row A2, then the storage room B1 corresponding to the first column, and the height of the electromagnetic field is applied in the region between the _original and Dd _k Dd _B1.

In some embodiments, applying an electromagnetic field to the storage compartment corresponding to the kth column and having a height between the _original Dd _k and Dd _k may specifically refer to: turning on the row corresponding to the kth column and having a height of Dd The electromagnet 15 between _k _original and Dd _k . For example, as shown in FIG. 2, 3 × 3 electromagnets 15 arranged in a matrix are respectively provided on two opposite walls in the longitudinal direction of the storage liner. If Dd _{B1 is} greater than Dd _k , then the space corresponding to row B1 When new ingredients are stored, the electromagnet 15 corresponding to column _{B1 and} between the height of Dd _k and Dd _B1 should be turned on, which can form a magnetic field in the area of new ingredients and apply electromagnetic fields to the freezing process of newly placed ingredients , To enhance the effect of freezing and freshness of the ingredients, while the other electromagnets 15 are in the off state, so that the magnetic field preservation is more efficient and energy-saving.

In this embodiment, referring again to FIG. 2, the multiple electromagnets 15 in each electromagnet group are distributed in a matrix on the corresponding wall surface, and the multiple electromagnets 15 in the electromagnet group on both wall surfaces are There is a corresponding and relative arrangement, and each electromagnet group includes m rows x n columns of electromagnets 15, where "column" refers to the height direction of the storage compartment, and "row" refers to the width direction of the storage compartment . It can be seen that the number of rows (m) of the electromagnets 15 distributed in a matrix in the electromagnet group is the same as the number of rows (m) of the distance sensor 16, and the number of columns (n) of the electromagnet 15 is the same as the number of columns of the distance sensor 16 The number (n) is the same. Therefore, the corresponding position of each column of distance sensors 16 and each column of electromagnets 15 is established, so that it is convenient to determine the position of the electromagnet 15 corresponding to the kth column and having a height between Dd _k and Dd _k to open the corresponding The electromagnet 15 forms a magnetic field in the new food material area.

In other embodiments, the position of the electromagnet 15 that forms a magnetic field in the new food material area may be determined according to the magnetic field distribution of the storage compartment, and then the corresponding electromagnet 15 is turned on. Specifically, before the inter chamber thereof and the k-th column corresponds, and the height of the step of applying an electromagnetic field in the region between _{the original} and Dd _nk Dd _nk, the control method further comprises:

Establish a three-dimensional model of the storage compartment, and mark the position of the distance sensor 16 in m rows x n columns in the three-dimensional model;

Among them, the steps of establishing the magnetic field distribution model of the storage compartment specifically include:

The magnetic field region generated by each electromagnet 15 in the storage compartment is detected, and a magnetic field distribution model of the storage compartment is established, so that the magnetic field regions corresponding to different electromagnets 15 are presented in the three-dimensional model of the storage compartment.

Thereafter, the magnetic field distribution model, determining a corresponding column of the k-th compartment and the storage room, and a height of the magnetic field distribution region corresponding to the region between the _primary and Dd Dd _k of _k.

From the magnetic field distribution model, each electromagnet 15 and its corresponding magnetic field area can be determined. After determining the area where the storage compartment corresponds to the k-th column and the height is between Dd _k and Dd _k , the magnetic field distribution model can be determined. Determine the magnetic field distribution area corresponding to this area, determine the spatial position of each electromagnet 15 forming the magnetic field distribution area according to the magnetic field distribution model, and then turn on the electromagnet 15 corresponding to the spatial position on the two walls facing the storage liner 14, Apply a magnetic field to the newly added ingredients to enhance its freezing effect.

When the corresponding electromagnet 15 is turned on to increase the magnetic field strength of the newly placed food area, the electromagnet 15 of the refrigerated freezer can be immediately turned on to reduce the temperature of the storage compartment, and the newly placed food is frozen while being closed All distance sensors 16. After the electromagnet 15 is turned on for a preset time, the ingredients complete the freezing process, and then the electromagnet 15 is turned off. For example, the electromagnet 15 is turned on (powered on) for 1 hour, and then turned off (powered off). As a result, the energy consumption is further reduced while improving the effect of freezing and preservation.

It will be appreciated that, after calculation of the height D between the storage chamber and the height of the selected minimum difference _d minnk empty space Dd _k, the difference shall be recorded Dd _k, as changed from the next door opening The _original Dd _k used in the closed control process. That is, after the door is closed, when the door is closed again, the Dd _k obtained by this calculation needs to be used as the _original Dd _k , and then compared with the recalculated Dd _k to determine the storage compartment Whether to put new ingredients and where to put new ingredients, reciprocate in order.

This embodiment exemplarily provides an optional process of the control method of the refrigerating and freezing device. Specifically, referring to FIG. 5, FIG. 5 is an optional process of the control method of the refrigerating and freezing device according to an embodiment of the present invention. In the figure, the control method of the refrigerated freezing device includes:

S502: Establish a three-dimensional model and a magnetic field distribution model of the storage compartment, and superimpose the magnetic field distribution model into the three-dimensional model to obtain a three-dimensional magnetic field distribution model of the storage compartment;

S504, a signal that the door is closed is detected, and if so, step S506 is executed;

S506, turn on all the distance sensors 16, obtain the height d _{nm of} m empty spaces in each column of column n, and select the minimum d _{mink of the} height of the empty space corresponding to each column from the height d _nm of m empty spaces in each column ;

S508, calculate the height D and d _mink difference between the storage chamber Dd _k, D and Dd _k height and the empty space between the storage chamber after the door closed with the last minimum value obtained in the _original height d _mink comparing _{the original} difference Dd _k;

S510, Dd _k > Dd _{k original} , if yes, go to step S512, if not, then end;

S512, the magnetic field distribution in the model, determining correspondence between the storage chamber and the n-th column, and a height corresponding to the magnetic field between _primary and Dd _k Dd _k distribution region;

S514: Determine the spatial position of each electromagnet 15 forming the magnetic field distribution area according to the magnetic field distribution model;

S516, turn on the electromagnet 15 corresponding to the space position, turn on the refrigeration system, and turn off all distance sensors 16;

S518, the opened electromagnet 15 is turned off after 1 hour.

In order to realize the automatic control of the above control method, as shown in FIG. 6, the refrigerator-freezer of this embodiment further includes a controller 20 and a memory 30. The memory 30 stores a computer program 31, and when the computer program 31 is executed, the control The controller 20 executes the control method of any of the above embodiments.

As shown in FIG. 6, all the distance sensors 16 are sequentially numbered as distance sensor 16-1, distance sensor 16-2, ..., distance sensor 16-p, etc., and each electromagnet included in each electromagnet group 15 is denoted as electromagnet 15-1, electromagnet 15-2, ..., electromagnet 15-p.

When the computer program 31 is executed, the controller 20 executes the steps of the method described above, and controls the door detector 40, the distance sensors 16, and the electromagnets 15 accordingly, so as to realize the magnetic field preservation of the refrigerator-freezer.

The memory 30 of this embodiment may be an electronic memory such as a flash memory, EEPROM, EPROM, hard disk, or ROM. The memory 30 has a storage space for a computer program 31 for performing any method steps in the above method.

By now, those skilled in the art should recognize that although a number of exemplary embodiments of the present invention have been shown and described in detail herein, they can still be disclosed according to the present invention without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all these other variations or modifications.

Claims

A control method of a refrigerated freezing device, wherein the refrigerated freezing device includes:

Storage liner, which defines a storage compartment;

A door body configured to open or close the storage compartment;

m rows x n columns of distance sensors, arranged on the top wall of the storage liner, distributed in a matrix, wherein the length direction of the storage compartment is denoted as a column, and the width direction is denoted as a row, each of the distances The sensor is configured to detect the distance from the top wall of the storage compartment to the food materials placed under the corresponding distance sensors to obtain the height of the empty space under each distance sensor that is not occupied by the food materials;

The control method includes:

Detect the opening and closing state of the door;

When the door body is changed from open to closed, all the distance sensors are turned on, and the height d of m empty spaces under the distance sensors that are not occupied by food materials in each column is detected to obtain m each column in the n column The height d nm of the vacant space;

The magnetic field strength of the storage compartment is adjusted according to the height of the empty space.
The control method according to claim 1, wherein the step of adjusting the magnetic field strength of the storage compartment according to the height of the empty space specifically includes:

The minimum value of the height of the vacant space corresponding to each column is selected from the height d nm of each of the m vacant spaces in each column, which is recorded as d mink , where k = 1, 2, ..., n;

Calculate the difference between the height D of the storage compartment and the minimum value d minnk of the height of the vacant space selected , and record it as Dd k ;

The height D between the storage chamber and Dd k after the last closing of the door body obtained with the empty space d mink minimum height difference Dd k original comparing the original;

If Dd k > Dd k original , an electromagnetic field is applied to the storage compartment corresponding to the k-th column and having a height between Dd k original and Dd k .
The control method according to claim 2, wherein before the step of applying an electromagnetic field to the storage compartment corresponding to the k-th column and having a height between Dd k and Dd k , further comprising:

Establish a three-dimensional model of the storage compartment, and mark the position of the m rows x n columns of distance sensors in the three-dimensional model;

Establishing a magnetic field distribution model of the storage room, and superimposing the magnetic field distribution model into the three-dimensional model to obtain a three-dimensional magnetic field distribution model of the storage room;

Magnetic field distribution in the model, determining the corresponding column and the k-chamber storage room, and a height of the magnetic field distribution region corresponding to the region between the primary and Dd Dd k of k.
The control method according to claim 3, wherein the refrigerator-freezer further comprises:

Two electromagnet groups are respectively disposed on two opposite walls of the storage tank and are used to form a magnetic field in the storage compartment. Each electromagnet group includes a plurality of electromagnets. An electromagnet is distributed at intervals on the corresponding wall surface;

The step of establishing the magnetic field distribution model of the storage compartment specifically includes:

Detecting the magnetic field area generated by each electromagnet in the storage compartment, and establishing a magnetic field distribution model of the storage compartment;

The inter-storage chamber and the k-th column corresponds, and a height of applying an electromagnetic field in the region between the original and Dd Dd k k comprises the step of:

Determining the spatial position of each electromagnet forming the magnetic field distribution area according to the magnetic field distribution model;

Turn on the electromagnet corresponding to the spatial position on the wall surface.
The control method according to claim 4, wherein

The plurality of electromagnets in each electromagnet group are distributed in a matrix on the corresponding wall surface, and the plurality of electromagnets in the electromagnet group on the two wall surfaces are one by one Corresponding and relative setting.
After the control method according to claim 2, wherein, in calculating the height D between the storage chamber and filter out the empty space d mink minimum height difference Dd k, further comprising:

Recording the height D between the storage chamber and the minimum height of the empty space d mink screened difference Dd k, as the next time the door is opened by the control procedure becomes Dd k are used after closure Original .
After the control method according to claim 2, wherein, in correspondence of said storage chamber between the first and the k-th column, and the height of the electromagnetic field is applied in the region between the original and Dd Dd k k, further comprising:

Turn on the refrigeration system of the refrigerated freezer.
A refrigerating and freezing device includes:

Storage liner, which defines a storage compartment;

A door body configured to open or close the storage compartment;

A door body opening and closing detection unit configured to detect the door body opening and closing state;

m rows x n columns of distance sensors, arranged on the top wall of the storage liner, distributed in a matrix, wherein the length direction of the storage compartment is denoted as a column, and the width direction is denoted as a row, each of the distances The sensor is configured to detect the distance from the top wall of the storage compartment to the food materials placed under the corresponding distance sensors to obtain the height of the empty space under each distance sensor that is not occupied by the food materials;

A controller and a memory, a computer program is stored in the memory, and when the computer program is executed, the controller is caused to execute the control method according to any one of claims 1 to 7.
The refrigerator-freezer according to claim 8, further comprising:

Two electromagnet groups are respectively disposed on two opposite walls of the storage tank and are used to form a magnetic field in the storage compartment. Each electromagnet group includes a plurality of electromagnets. The electromagnets are distributed at intervals on the corresponding wall surface.
The refrigerator-freezer according to claim 9, wherein

The plurality of electromagnets in each electromagnet group are distributed in a matrix on the corresponding wall surface, and the plurality of electromagnets in the electromagnet group on the two wall surfaces are one by one Corresponding and relative setting.