WO2023160330A1

WO2023160330A1 - Refrigerator control method and refrigerator

Info

Publication number: WO2023160330A1
Application number: PCT/CN2023/073696
Authority: WO
Inventors: 王艳; 衣尧; 刘浩泉
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2022-02-22
Filing date: 2023-01-29
Publication date: 2023-08-31
Also published as: CN116678157A

Abstract

A refrigerator control method. A refrigerator comprises a target compartment, and the target compartment is used for storing food. The control method comprises: acquiring the current temperature of a target compartment; in response to the fact that the current temperature is greater than a first temperature, cooling the target compartment at a first rate, so as to cool the target compartment to the first temperature; in response to the fact that the current temperature is not greater than the first temperature and greater than a second temperature, cooling the target compartment at a second rate, so as to cool the target compartment to the second temperature, wherein the second rate is less than the first rate; and in response to the fact that the current temperature is within a preset temperature range, controlling the temperature of each position in the target compartment to be within the preset temperature range, enabling a fluctuation range of the temperature of each position in the target compartment to be not greater than a first preset threshold, and enabling the uniformity of all positions in the target compartment to be not greater than a second preset threshold.

Description

Refrigerator control method and refrigerator

technical field

The invention belongs to the technical field of refrigerators, and specifically provides a refrigerator control method and the refrigerator.

Background technique

For meat and aquatic ingredients, there are two main traditional fresh-keeping methods: refrigeration (4°C) fresh-keeping method and frozen fresh-keeping method. Although the refrigeration preservation method has a certain inhibitory effect on microorganisms, it has a shorter preservation time for ingredients. However, the frozen preservation method tends to cause the ingredients to form ice crystals, destroy the cell structure, and the juice loss rate is high, which accelerates the dry consumption and oxidation of the ingredients. When thawing, it is easy to cause the loss of nutrients in the ingredients, reduce the freshness and tenderness, and the freshness of the ingredients is poor. .

Therefore, there is an urgent need for a new fresh-keeping method to improve the fresh-keeping effect of ingredients.

Contents of the invention

An object of the present invention is to provide a new refrigerator and/or a control method for the refrigerator to improve the freshness preservation effect of the refrigerator on food materials.

A further object of the present invention is to solve the problem of partial freezing of ingredients due to large temperature differences at various positions in the compartment.

A further object of the present invention is to realize the freshness preservation effect of low temperature and non-freezing food materials through the dual effects of temperature and magnetic field.

A further object of the present invention is to solve the problem of how to detect whether food is placed in the target compartment.

In order to achieve the above object, the present invention provides a refrigerator control method in a first aspect, the refrigerator includes a target compartment, and the target compartment is used to store food; the control method includes:

obtaining the current temperature of the target compartment;

In response to the current temperature being within the preset temperature range, controlling the temperature of each position in the target compartment within the preset temperature range, and making the temperature fluctuation range of each position in the target compartment not greater than the first A preset threshold, so that the uniformity of all positions in the target compartment is not greater than a second preset threshold.

Optionally, the refrigerator includes a plurality of temperature sensors, and the plurality of temperature sensors are distributed on the top and bottom of the target compartment, so as to detect the temperature of each position in the target compartment through the plurality of temperature sensors ;

In response to the current temperature being within the preset temperature range, controlling the temperature of each position in the target compartment within the preset temperature range, and making the temperature fluctuation range of each position in the target compartment not greater than the first A preset threshold, so that the uniformity of all positions in the target compartment is not greater than a second preset threshold, including:

Make the temperature value detected by each of the temperature sensors be within the preset temperature range;

making the temperature value detected by each of the temperature sensors not greater than a first preset threshold;

The difference between the temperature value detected by each of the temperature sensors and the average of the temperature values detected by all the temperature sensors is not greater than a second preset threshold.

Optionally, the refrigerator includes a cold storage module and/or a heat conduction plate disposed on a side wall of the target compartment.

Optionally, the preset temperature range is 0°C to -4.4°C; and/or, the first preset threshold is 1.5°C; and/or, the second preset threshold is 1°C.

Optionally, the control method also includes:

cooling the target compartment at a first rate to the first temperature in response to the current temperature being greater than a first temperature;

in response to the current temperature being not greater than the first temperature and greater than a second temperature, cooling the target compartment at a second rate to the second temperature, the second rate being less than the first rate.

Optionally, the value range of the first temperature is -1.0°C to 1.0°C; and/or, the value range of the second temperature is -1.0°C to -2.0°C; and/or, the first temperature The value range of the first rate is 30 min/°C to 220 min/°C; and/or, the value range of the second rate is 230 min/°C to 520 min/°C.

Optionally, the refrigerator further includes a magnetic field generating module, and the magnetic field generated by the magnetic field generating module can cover various positions of the target compartment;

The control method also includes:

The magnetic field module provides a magnetic field with a magnetic field strength of 2 mT to 10 mT for the target compartment.

Optionally, before obtaining the current temperature of the target compartment, the control method further includes: detecting whether food is placed in the target compartment;

The acquiring the current temperature of the target compartment includes: acquiring the current temperature of the target compartment in response to food being placed in the target compartment.

Optionally, the refrigerator includes a drawer assembly, and the drawer assembly includes:

Outer cylinder, the front part of which is provided with a slide rail limit structure;

a drawer, which is drawably installed in the outer cylinder, the drawer defines the target compartment;

a first slide rail, the rear part of which is pivotally connected to the rear part of the outer cylinder, and the front part of the first slide rail is located on the upper side of the slide rail limiting structure;

a second slide rail, which is arranged on the outer cylinder and is slidably connected with the first slide rail;

a pressure sensor, which is arranged on the limit structure of the slide rail, and the pressure sensor can abut against the front part of the first slide rail;

The detection of whether ingredients are placed in the target compartment includes:

Detecting whether the value detected by the pressure sensor has changed dynamically;

If so, comparing the current value detected by the pressure sensor with the value before the dynamic change;

If the current value is greater than the value before the dynamic change, it is determined that food is placed in the target compartment.

The present invention provides a refrigerator in a second aspect, comprising:

target compartment, which is used to store ingredients;

a plurality of temperature sensors, a plurality of said temperature sensors being distributed on the top and bottom of said target compartment;

A control module, including a processor, a memory, and execution instructions stored in the memory, the execution instructions are configured to enable the refrigerator to perform the control described in any one of the first aspects when executed by the processor method.

The present invention provides a refrigerator in a third aspect, comprising:

target compartment, which is used to store ingredients;

A magnetic field generating module, the magnetic field generated by it can cover various positions of the target compartment;

The control module includes a processor, a memory, and execution instructions stored in the memory, and the execution instructions are configured to enable the refrigerator to execute the corresponding control method in the first aspect when executed by the processor.

The present invention provides a refrigerator in a fourth aspect, comprising:

The drawer assembly includes an outer cylinder, a drawer, a first slide rail, a second slide rail and a pressure sensor. The front part of the outer cylinder is provided with a slide rail limiting structure; A target compartment is defined in the barrel; the rear part of the first slide rail is pivotally connected to the rear part of the outer cylinder, and the front part of the first slide rail is located on the upper side of the stop structure of the slide rail; The second slide rail is arranged on the outer cylinder and is slidably connected with the first slide rail; the pressure sensor is arranged on the slide rail limit structure, and the pressure sensor can abut against the front of the first slide rail;

Based on the foregoing description, those skilled in the art can understand that, in the aforementioned technical solution of the present invention, by controlling the temperature of each position in the target compartment within the preset temperature range, and making the temperature of each position in the target compartment The temperature fluctuation range is not greater than the first preset threshold, so that the uniformity of all positions in the target compartment is not greater than the second preset threshold, so that the temperature at each position in the target compartment is relatively low and almost equal, and the refrigerator can The ingredients in the target compartment are evenly refrigerated to avoid freezing of the ingredients due to local low temperature.

Further, by setting the preset temperature range from 0°C to -4.4°C, the first preset threshold is 1.5°C, and the second preset threshold is 1°C, so that the refrigerator can evenly preserve the freshness of the ingredients at a temperature close to freezing , while keeping the ingredients from freezing, the fresh-keeping temperature can be kept low enough to improve the fresh-keeping effect of the ingredients.

Further, by making the magnetic field module provide the target compartment with a magnetic field with a magnetic field strength of 2mT to 10mT, the refrigerator can keep the food fresh under the double action of the magnetic field and low temperature, prolonging the fresh-keeping time of the food.

Still further, a pressure sensor is set at the slide rail limiting structure on the front of the outer cylinder, and the rear of the first slide rail is pivotally connected to the rear of the outer cylinder, so that the front of the first slide rail can selectively abut against the pressure sensor. Those skilled in the art can understand that when the weight of the food in the drawer changes, the pressure applied to the pressure sensor by the first slide rail will also change. Therefore, the present invention can detect whether food is put in the drawer through the pressure sensor. Specifically, whether the user pushes or pulls the drawer is determined by whether the value detected by the pressure sensor changes dynamically. If the value detected by the pressure sensor changes dynamically, compare the current value detected by the pressure sensor with the value before the dynamic change to determine whether the user has put new ingredients into the drawer. If the current value is greater than the value before the dynamic change, it is determined that food is placed in the target compartment.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, some embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the components or parts indicated by the same reference number in different drawings are the same or similar; the drawings of the present invention are not necessarily drawn to scale. In the attached picture:

Fig. 1 is the first temperature-preservation effect table of the influence of refrigeration temperature on food preservation;

Fig. 2 is the second temperature-preservation effect table of the influence of refrigeration temperature on food preservation;

Fig. 3 is the cooling rate-preservation effect table of the influence of cooling rate on food preservation;

Figure 4 is a magnetic field-preservation effect table of the influence of magnetic field on food preservation;

Fig. 5 is a schematic diagram of a refrigerator provided according to the technical concept of the present invention;

Fig. 6 is a flow chart of main steps of a refrigerator control method in some embodiments of the present invention;

Fig. 7 is a schematic diagram of the air path of the cold air cooling the drawer in some embodiments of the present invention;

Figure 8 is a schematic diagram of a drawer assembly with temperature sensors in some embodiments of the invention;

Figure 9 is a schematic diagram of a drawer assembly with a cold storage module in some embodiments of the present invention;

Fig. 10 is a flow chart of main steps of a refrigerator control method in another embodiment of the present invention;

Fig. 11 is a schematic diagram of a magnetic field module acting on a drawer in another embodiment of the present invention;

Fig. 12 is a flow chart of the main steps of the refrigerator control method in some other embodiments of the present invention;

Fig. 13 is a schematic diagram of the structure of the infrared module detecting the ingredients in the drawer in some other embodiments of the present invention;

Fig. 14 is a schematic structural diagram of the weighing module detecting the ingredients in the drawer in some other embodiments of the present invention;

Fig. 15 is a schematic diagram of the structure of the pressure sensor detecting the ingredients in the drawer in some other embodiments of the present invention (the drawer is in the inserted state);

Fig. 16 is a schematic diagram of the structure of the pressure sensor detecting the food in the drawer in some other embodiments of the present invention (the drawer is in the pulled out state);

Fig. 17 is a schematic diagram of a control module of a refrigerator provided according to the technical concept of the present invention.

Detailed ways

Because the above-mentioned problems exist in the existing fresh-keeping technology of the refrigerator, so the technicians of the present invention have improved the existing fresh-keeping technology of the refrigerator.

As shown in Figure 1 and Figure 2, when the technicians of the present invention improved the existing fresh-keeping technology of the refrigerator, they found that when the temperature of the air in the refrigerator compartment is between 0°C and -4.4°C, each position in the compartment When the fluctuation temperature of the refrigerator is not greater than 1.5°C, and the temperature uniformity of all positions in the compartment is not greater than 1°C, the refrigerator has the best preservation effect on food materials. In particular, when the temperature of the air in the refrigerator compartment is between -1.4°C and -3.4°C, and the fluctuation temperature at each position in the compartment is not greater than 0.8°C, the effect of the refrigerator on food preservation is more prominent.

As shown in Figure 3, the technicians of the present invention further found that for the food materials newly put into the compartment, first cool the compartment down to 0°C to -1°C at a rate of 30min/°C to 220min/°C, and then cool the compartment to -1°C. Cool down to -1°C to -1.1°C at a rate of 230min/°C to 520min/°C. After 7 days of refrigeration, not only will the food not freeze, but the content of microorganisms will also be low, that is, the preservation effect of the food will be further improved.

As shown in FIG. 4 , the technicians of the present invention also found that applying a magnetic field of 2mT to 10mT to the food will prolong the preservation time of the food.

Based on this, the present invention provides a refrigerator control method and the refrigerator. The refrigerator control method and the refrigerator of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

It should be understood by those skilled in the art that the embodiments described below are only some of the embodiments of the present invention, rather than all embodiments of the present invention. To limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts should still fall within the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", " Terms indicating directions or positional relationships such as "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, in order to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In addition, it should be noted that, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a It is a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediary, or it can be two components Internal connectivity. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

As shown in FIG. 5 , in the present invention, a refrigerator 100 includes a box body 110 , a drawer assembly 120 that can be drawn relative to the box body 110 , and a target compartment 130 . The target compartment 130 may be defined by the box body 110 itself, or may be defined by the drawer assembly 120 .

The control method of the refrigerator in some embodiments of the present invention will be described in detail below with reference to FIG. 6 to FIG. 9 .

As shown in Figure 6, in some embodiments of the present invention, the control method of the refrigerator includes:

Step S110 , acquiring the current temperature of the target compartment 130 .

Optionally, the refrigerator 100 is an air-cooled refrigerator 100. As shown in FIG. The barrel 121 has a pullable drawer 122 , an air inlet 123 and an air outlet 124 . The cold air enters between the outer cylinder 121 and the drawer 122 from the air inlet 123 , and flows out from the air outlet 124 after cooling the drawer 122 .

As shown in FIG. 8 , the refrigerator 100 further includes a plurality of temperature sensors 140 , so that the refrigerator 100 obtains the current temperature of the target compartment 130 through the plurality of temperature sensors 140 . Specifically, the plurality of temperature sensors 140 are distributed on the top and the bottom of the target compartment 130 to detect the temperature of each position in the target compartment 130 through the plurality of temperature sensors 140 .

In addition, those skilled in the art can distribute multiple temperature sensors 140 on the top, bottom and side of the target compartment 130 as required. Alternatively, a plurality of temperature sensors 140 are arranged in the drawer 122 in any other feasible distribution manner.

In some embodiments of the present invention, obtaining the current temperature of the target compartment 130 includes, through the plurality of temperature sensors 140 , the current temperature of the target compartment 130 .

Optionally, the current temperature may be the average value of the temperature values detected by all the temperature sensors 140, or the average value of the temperature values detected by the temperature sensors 140 distributed on the top or bottom of the target compartment 130, or is the temperature value detected by a specific temperature sensor 140 .

Further, in different detection periods, different combinations of temperature sensors 140 may also be used to obtain the current temperature of the target compartment 130 . For example, when the refrigerator 100 is blowing air to the drawer assembly 120 , the current temperature of the target compartment 130 is detected by at least one temperature sensor 140 distributed at the bottom of the target compartment 130 . When the refrigerator 100 stops supplying air to the drawer assembly 120, at least one temperature sensor 140 distributed on the top of the target compartment 130 is used to detect the current temperature of the target compartment 130. Alternatively, the current temperature of the target compartment 130 is determined by the average value detected by at least one temperature sensor 140 distributed on the top of the target compartment 130 and at least one temperature sensor 140 distributed on the bottom of the target compartment 130 .

Step S120, in response to the current temperature being within the preset temperature range, controlling the temperature at each location in the target compartment 130 to be within the preset temperature range, and making the temperature fluctuation range at each location in the target compartment 130 are not greater than the first preset threshold, so that the temperature uniformity at all positions in the target compartment 130 is not greater than the second preset threshold.

Wherein, the greater the uniformity, the smaller the dispersion of the temperature values between the positions in the standard room.

Specifically, the temperature value detected by each temperature sensor 140 is all within the preset temperature range, so that the temperature value detected by each temperature sensor 140 is not greater than the first preset threshold, so that each temperature sensor 140 detects The difference between the temperature value of and the average of the temperature values detected by all the temperature sensors 140 is not greater than the second preset threshold.

Wherein, the preset temperature range is 0°C to -4.4°C, preferably, the preset temperature range is -1.4°C to -3.4°C. In addition, those skilled in the art can also set the preset temperature range to any other feasible numerical range as needed, such as 0°C to -3.4°C, -1°C to -4.4°C, -1.2°C to -2.4°C, -1.2°C to -2.4°C, - 1°C to -3.2°C etc.

Wherein, the first preset threshold is 1.5°C. In addition, those skilled in the art can also set the first preset threshold to any other feasible value, such as 1.0°C, 0.8°C, 0.5°C, etc., as needed.

Wherein, the second preset threshold is 1°C. In addition, those skilled in the art may also set the first preset threshold to any other feasible value, such as 0.9° C., 0.8° C., 0.6° C., etc. as needed.

Further, in order to make the target compartment 130 reach the temperature range described in step S120, the refrigerator 100 further includes a cold storage module 150 (as shown in FIG. 9 ) disposed on the side wall of the target compartment 130 .

As shown in FIG. 9 , the top side, the bottom side and the front side of the drawer 122 (the side close to the handle of the drawer 122 ) are all provided with a cold storage module 150, so that the cold storage module 150 can slowly and evenly release cold to the target compartment 130. quantity. Or, those skilled in the art can also arrange cold storage modules 150 distributed up and down, front and rear, and left and right of the drawer 122 as required, so that the target compartment 130 in the drawer 122 can be evenly cooled by the cold storage modules 150 at the six sides of the drawer 122, In this way, the ingredients in the target compartment 130 are prevented from being partially overcooled and frozen.

Optionally, except the cold storage module 150 on the front side of the drawer 122 is set on the drawer 122 , other cold storage modules 150 are all set on the outer cylinder 121 .

Further, those skilled in the art can also set a heat conduction device on the bottom side of the drawer 122 plate, so that the cold energy is first absorbed by the heat conduction plate, and then evenly released into the drawer 122 through the heat conduction plate, so that the food in the target compartment 130 is evenly cooled.

Based on the foregoing description, those skilled in the art can understand that, in some embodiments of the present invention, by controlling the temperature at each position in the target compartment 130 within 0°C to -4.4°C, and making the target compartment 130 The temperature fluctuation range at each position in the chamber 130 is not greater than 1.5°C, so that the uniformity at all positions in the target compartment 130 is not greater than 1°C, so that the temperature at each position in the target compartment 130 is relatively low and Almost equal, so that the refrigerator 100 can cool the food in the target compartment 130 evenly, avoiding the situation that the food is frozen due to the local temperature being too low.

Referring to Fig. 10, the control method of the refrigerator in some further embodiments of the present invention will be described in detail.

As shown in Fig. 10, compared with some embodiments described above, in some further embodiments of the present invention, between step S110 and step S120, the refrigerator control method further includes:

Step S210 , in response to the current temperature being greater than the first temperature, cooling the target compartment 130 at a first rate, so as to drop the temperature to the first temperature.

Wherein, the value range of the first temperature is -1.0 to 1.0°C. Specifically, the first temperature may be -1.0°C, -0.5°C, 0°C, 0.5°C, 1.0°C, etc.

Wherein, the value range of the first rate is 30min/°C to 220min/°C, for example, 30min/°C, 45min/°C, 80min/°C, 150min/°C, 180min/°C, 200min/°C, 220min/°C, etc.

Step S220 , in response to the current temperature being not greater than the first temperature and greater than the second temperature, cooling the target compartment 130 at a second rate to cool down to the second temperature.

Wherein, the second rate is less than the first rate, and the value range of the second rate is 230min/°C to 520min/°C, for example, 230min/°C, 250min/°C, 300min/°C, 320min/°C, 400min/°C, 500min /°C, 520min/°C, etc.

Wherein, the second temperature is lower than the first temperature, and the value range of the second temperature is -1.0 to -2.0°C. Specifically, the second temperature may be -1.0°C, -1.5°C, 1.8°C, -2.0°C, etc.

Those skilled in the art can understand that, in some other embodiments of the present invention, the temperature of the target compartment 130 is quickly lowered to the first temperature at the first rate, and then slowly cooled to the second temperature at the second rate. , and finally make the temperature in the target compartment 130 fluctuate within the preset temperature range, so as to avoid affecting the preservation effect of the food when the temperature of the food cools down slowly, and to avoid the phenomenon of freezing when the temperature of the food cools too fast. Therefore, some further embodiments of the present invention overcome the adverse effect on the food preservation effect during the food cooling stage, and improve the food preservation effect.

Other embodiments of the present invention will be described in detail below with reference to FIG. 11 .

Compared with any embodiment described above, in other embodiments of the present invention, the refrigerator 100 further includes a magnetic field generating module, and the magnetic field generated by the magnetic field generating module can cover various positions of the target compartment 130 .

Further, the control method of the refrigerator further includes the step of: making the magnetic field module 160 provide the target compartment 130 with a magnetic field with a magnetic field strength of 2 mT to 10 mT.

Wherein, the magnetic field intensity provided by the magnetic field module 160 for the target compartment 130 may be any feasible value, such as 2mT, 3mT, 3.4mT, 5mT, 8mT, 10mT and so on.

In some other embodiments of the present invention, the magnetic field provided by the magnetic field module 160 for the target compartment 130 may be a magnetic field with a constant magnetic field strength, or a magnetic field with a variable magnetic field strength.

Those skilled in the art can understand that since the response speed of the magnetic field change is much faster than the response speed of the temperature change, and the magnetic field has the effect of keeping the food fresh, so in order to achieve the best fresh keeping effect of the food, when the magnetic field module 160 is When the target compartment 130 provides a magnetic field with varying magnetic field strength, the magnetic field strength increases as the temperature of the target compartment 130 increases, and decreases as the temperature of the target compartment 130 decreases. In order to make the refrigerator 100 have a good fresh-keeping effect, the energy consumption of the refrigerator 100 can also be reduced.

Those skilled in the art can understand that, in some other embodiments of the present invention, by making the magnetic field module 160 provide the target compartment 130 with a magnetic field with a magnetic field strength of 2mT to 10mT, the refrigerator 100 can operate under the dual effects of magnetic field and low temperature. Keep the ingredients fresh, prolonging the freshness of the ingredients.

Further embodiments of the present invention will be described in detail below with reference to FIG. 12 to FIG. 16 .

Compared with any embodiment described above, in some other embodiments of the present invention, before step S110, the refrigerator control method further includes: detecting whether food is placed in the target compartment 130 .

Moreover, step S110 specifically includes: acquiring the current temperature of the target compartment 130 in response to putting food in the target compartment 130 .

In some other embodiments of the present invention, any feasible method may be used to detect whether food is placed in the target compartment 130 , and the method of detecting whether food is placed in the target compartment 130 will be illustrated below.

As example one:

As shown in Figure 13, the drawer assembly 120 also includes an infrared emitting module 1251 and an infrared receiving module 1252, the infrared emitting module 1251 and the infrared receiving module 1252 are arranged on the drawer 122 oppositely. on both sides. When food is placed in the drawer 122, the food will affect the infrared signal received by the infrared receiving module 1252, making the intensity of the infrared signal received by the infrared receiving module 1252 weak. Therefore, when the refrigerator 100 detects that the intensity of the infrared signal received by the outer receiving module becomes weaker, it can determine that food is placed in the target compartment 130 .

As example two:

As shown in Figure 14, the drawer assembly 120 also includes a load cell 126 arranged between the outer tube 121 and the drawer 122, and the load cell 126 is used to detect the weight of the drawer 122, so that the refrigerator 100 can be weighed by the load cell 126 Determine whether food is put into the target compartment 130 based on the weight of the food.

As example three:

As shown in FIGS. 15 and 16 , the drawer assembly 120 further includes a first slide rail 127 , a second slide rail 128 and a pressure sensor 129 . The front portion of the outer cylinder 121 is provided with a slide rail limiting structure 1211, which can be any feasible structure, such as a bump protruding from the surface of the outer cylinder 121, a stop fixedly connected with the outer cylinder 121 blocks or columns. The rear portion of the first slide rail 127 is pivotally connected to the rear portion of the outer cylinder 121 , and the front portion of the first slide rail 127 is located on the upper side of the slide rail limiting structure 1211 . The second slide rail 128 is disposed on the outer cylinder 121 and is slidably connected with the first slide rail 127 . The pressure sensor 129 is disposed on the sliding rail limiting structure 1211 , and the pressure sensor 129 can abut against the front of the first sliding rail 127 .

Wherein, FIG. 15 shows a schematic diagram of the second sliding rail 128 abutting against the pressure sensor 129 when the drawer 122 is in the inserted state. In this state, the pressure sensor 129 is pressed by the drawer 122 . FIG. 16 is a schematic diagram showing that the second slide rail 128 is separated from the pressure sensor 129 when the drawer 122 is in the withdrawn state. At this time, the pressure sensor 129 is not affected by the pressure of the drawer 122 .

In this example, detecting whether food is placed in the target compartment 130 includes:

Step S310 , detecting whether the value detected by the pressure sensor 129 changes dynamically, so as to determine whether the drawer 122 has been pulled out by the user.

Step S320, if yes, compare the current value detected by the pressure sensor 129 with the value before the dynamic change to determine whether food is put into the drawer 122.

Step S330 , if the current value is greater than the value before the dynamic change, it is determined that food is placed in the target compartment 130 .

Those skilled in the art can understand that, in this example, by setting the pressure sensor 129 at the slide rail limit structure 1211 on the front of the outer cylinder 121, and making the rear of the first slide rail 127 and the rear of the outer cylinder 121 The part is pivotally connected so that the front part of the first slide rail 127 can be selectively connected with the pressure sensor 129 abuts, and therefore makes the drawer 122 no matter its center of gravity is located in its front, middle, or rear, all can produce certain pressure to pressure sensor 129, thereby ensured that pressure sensor 129 detects the reliability of food material weight change in drawer 122. Further, by detecting whether the value detected by the pressure sensor 129 has dynamically changed, it is determined whether the user has pulled out the drawer 122; The current value and the value before the dynamic change are used to determine whether food is placed in the drawer 122, which ensures the reliability of the pressure sensor 129 for the weight detection of the drawer 122.

Compared with Example 1, Example 3 avoids that the ingredients are small in size and has no effect on the infrared signal received by the infrared receiving module 1252 , the infrared receiving module 1252 cannot detect that the food is put into the drawer 122 .

Compared with Example 2 in this example, Example 3 prevents the detection function of the load cell 126 from being triggered when the ingredients are biased.

As shown in Figure 17, the refrigerator 100 of the present invention also includes a control module 170, the control module 170 includes a processor 171, a memory 172 and execution instructions stored on the memory 172, the execution instructions are set to be executed by the processor 172 The control method described in any of the previous embodiments of the refrigerator 100 can be used.

So far, the technical solutions of the present invention have been described in conjunction with the foregoing embodiments. However, those skilled in the art can easily understand that the protection scope of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can split and combine the technical solutions in the above-mentioned embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the concept and/or technical principles will fall within the protection scope of the present invention.

Claims

A control method for a refrigerator, the refrigerator includes a target compartment for storing food; the control method includes:

obtaining the current temperature of the target compartment;

In response to the current temperature being within the preset temperature range, controlling the temperature of each position in the target compartment within the preset temperature range, and making the temperature fluctuation range of each position in the target compartment not greater than the first A preset threshold, so that the uniformity of all positions in the target compartment is not greater than a second preset threshold.
The control method of the refrigerator according to claim 1, wherein,

The refrigerator includes a plurality of temperature sensors, and the plurality of temperature sensors are distributed on the top and bottom of the target compartment, so as to detect the temperature of each position in the target compartment through the plurality of temperature sensors;

In response to the current temperature being within the preset temperature range, controlling the temperature of each position in the target compartment within the preset temperature range, and making the temperature fluctuation range of each position in the target compartment not greater than the first A preset threshold, so that the uniformity of all positions in the target compartment is not greater than a second preset threshold, including:

Make the temperature value detected by each of the temperature sensors be within the preset temperature range;

making the temperature value detected by each of the temperature sensors not greater than a first preset threshold;

The difference between the temperature value detected by each of the temperature sensors and the average of the temperature values detected by all the temperature sensors is not greater than a second preset threshold.
The control method of the refrigerator according to claim 2, wherein,

The refrigerator includes a cold storage module and/or a heat conduction plate disposed on a side wall of the target compartment.
The control method of the refrigerator according to any one of claims 1 to 3, wherein,

The preset temperature range is 0°C to -4.4°C; and/or,

The first preset threshold is 1.5°C; and/or,

The second preset threshold is 1°C.
The control method of the refrigerator according to any one of claims 1 to 3, wherein,

The control method also includes:

cooling the target compartment at a first rate to the first temperature in response to the current temperature being greater than a first temperature;

in response to the current temperature being not greater than the first temperature and greater than a second temperature, cooling the target compartment at a second rate to the second temperature, the second rate being less than the first rate.
The control method of the refrigerator according to claim 5, wherein,

The value range of the first temperature is -1.0°C to 1.0°C; and/or,

The value range of the second temperature is -1.0°C to -2.0°C; and/or,

The value range of the first rate is 30min/°C to 220min/°C; and/or,

The value range of the second rate is 230 min/°C to 520 min/°C.
The control method of the refrigerator according to claim 1, wherein,

The refrigerator also includes a magnetic field generating module, and the magnetic field generated by the magnetic field generating module can cover various positions of the target compartment;

The control method also includes:

The magnetic field module provides a magnetic field with a magnetic field strength of 2 mT to 10 mT for the target compartment.
The control method of the refrigerator according to claim 1, wherein,

Before acquiring the current temperature of the target compartment, the control method further includes: detecting whether food is placed in the target compartment;

The acquiring the current temperature of the target compartment includes: acquiring the current temperature of the target compartment in response to food being placed in the target compartment.
The control method of the refrigerator according to claim 8, wherein,

The refrigerator includes a drawer assembly, and the drawer assembly includes:

The outer cylinder is provided with a slide rail limit structure at the front;

a drawer, which is drawably installed in the outer cylinder, the drawer defines the target compartment;

a first slide rail, the rear part of which is pivotally connected to the rear part of the outer cylinder, and the front part of the first slide rail is located on the upper side of the slide rail limiting structure;

a second slide rail, which is arranged on the outer cylinder and is slidably connected with the first slide rail;

a pressure sensor, which is arranged on the limit structure of the slide rail, and the pressure sensor can abut against the front part of the first slide rail;

The detection of whether ingredients are placed in the target compartment includes:

Detecting whether the value detected by the pressure sensor has changed dynamically;

If so, comparing the current value detected by the pressure sensor with the value before the dynamic change;

If the current value is greater than the value before the dynamic change, it is determined that food is placed in the target compartment.
A refrigerator comprising:

target compartment, which is used to store ingredients;

a plurality of temperature sensors, a plurality of said temperature sensors being distributed on the top and bottom of said target compartment;

A control module, including a processor, a memory, and execution instructions stored in the memory, the execution instructions are configured to enable the refrigerator to execute the refrigerator according to any one of claims 1 to 6 when executed by the processor. control method.
A refrigerator comprising:

target compartment, which is used to store ingredients;

A magnetic field generating module, the magnetic field generated by it can cover various positions of the target compartment;

The control module includes a processor, a memory, and execution instructions stored in the memory, and the execution instructions are configured to enable the refrigerator to execute the control method according to claim 7 when executed by the processor.
A refrigerator comprising:

The drawer assembly includes an outer cylinder, a drawer, a first slide rail, a second slide rail and a pressure sensor. The front part of the outer cylinder is provided with a slide rail limiting structure; A target compartment is defined in the barrel; the rear part of the first slide rail is pivotally connected to the rear part of the outer cylinder, and the front part of the first slide rail is located on the upper side of the stop structure of the slide rail; The second slide rail is arranged on the outer cylinder and is slidably connected with the first slide rail; the pressure sensor is arranged on the limit structure of the slide rail, and the pressure sensor can be connected with the first slide rail. the front abutment of the slide rail;

a control module comprising a processor, a memory, and instructions for execution stored on said memory, the The execution instructions are configured to enable the refrigerator to execute the control method described in claim 8 or 9 when executed by the processor.