WO2021196964A1 - Refrigerating and freezing device, and control method therefor - Google Patents

Abstract

Disclosed are a refrigerating and freezing device, and a control method therefor, wherein the control method comprises: detecting an event in which a storage space is opened and closed; during the process in which the storage space is opened and closed, detecting a situation in which a new item is placed in the same storage area in the storage space, and detecting the temperature change of the storage space caused by the entry of external air during the process in which the storage space is opened and closed; and according to the situation in which a new item is placed in the same storage area of the storage space and the temperature change of the storage space, determining an opportune moment for supplying cold air to the storage space, so that it can be ensured that the storage space can be cooled as soon as possible when refrigeration is required.

Description

Refrigeration and freezing device and its control method Technical field

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

Background technique

At present, refrigeration and freezing devices, such as refrigerators, determine the timing of refrigeration according to the temperature change in the room. For example, when the temperature reaches the start-up point, the device starts to cool, and it will not cool if it does not reach the start-up point, resulting in the inability to add fresh ingredients in time If the temperature is lowered quickly, it may cause the freshness of the ingredients to decrease, the loss of nutrients and other problems, which will affect the preservation of the ingredients.

Summary of the invention

An object of the present invention is to provide a refrigerating and freezing device and a control method thereof that at least solve the above-mentioned problems.

A further object of the present invention is to reasonably control the timing of supplying cold air to the storage space, and at the same time provide suitable storage temperature for new and original ingredients.

According to one aspect of the present invention, the present invention first provides a control method of a refrigerating and freezing device, which includes:

Detecting an event that the storage space is opened and closed;

When the storage space is opened and closed, it is detected that new items are placed in the same storage area of the storage space, and it is detected that the storage space is opened and closed due to the ingress of outside air. The temperature change of the object space;

The timing of supplying cold air to the storage space is determined according to the situation of putting new items in the same storage area of the storage space and the temperature change of the storage space.

Optionally, in the process of opening and closing the storage space, detecting that new items are placed in the same storage area of the storage space, and detecting that the storage space is caused by the ingress of outside air during the process of opening and closing The steps of the temperature change of the storage space include:

When the storage space is opened and at the first preset time after it is closed, respectively detect the temperature of the items stored in the same storage area of the storage space to obtain the first temperature and the first temperature of the items in the same storage area, respectively Second temperature

When the storage space is opened and at the first preset time after it is closed, respectively detect the temperature of the same wall area of the storage space to obtain the first wall temperature and the wall portion of the same wall area respectively Second temperature

The step of determining the timing of supplying cold air to the storage space according to the situation of putting new items in the same storage area of the storage space and the temperature change of the storage space includes:

Calculating the difference between the second temperature of the article and the first temperature of the article in the same storage area, and calculating the difference between the second temperature of the wall and the first temperature of the wall in the same wall area;

If the difference between the second temperature of the item and the first temperature of the item in the same storage area is equal to or greater than the first preset temperature threshold, and the difference between the second temperature of the wall and the first temperature of the wall When the value is equal to or greater than the second preset temperature threshold, cool air is supplied to the storage space for a first preset time after the storage space is closed.

Optionally, the step of determining the timing of supplying cold air to the storage space according to the situation of putting new items in the same storage area of the storage space and the temperature change of the storage space further includes:

If the difference between the second temperature of the item and the first temperature of the item in the same storage area is less than the third preset temperature threshold, or if the second temperature of the item and the first temperature of the item in the same storage area are The temperature difference is greater than the first preset temperature threshold, and the difference between the wall second temperature and the wall first temperature in the same wall area is less than the second preset temperature threshold;

After the first preset time after the storage space is closed, continue to detect the temperature of the same wall area of the storage space to obtain the third wall temperature of the same wall area. Supply cold air to the storage space when the temperature is greater than the fourth preset temperature threshold;

The third preset temperature threshold is less than the first preset temperature threshold.

Optionally, the control method further includes:

During the process of opening the storage space, record the time when the storage space is opened;

If the storage space is opened for a time longer than the second preset time, supply cold air to the storage space when the storage space is closed;

If the storage space is opened for a time that is equal to or less than the second preset time, the execution is executed according to the situation of new items in the same storage area of the storage space and the temperature change of the storage space. The steps of the timing of supplying cold air to the storage space are described.

According to another aspect of the present invention, the present invention also provides a refrigerating and freezing device, including:

Box, including storage space;

An opening and closing detector configured to controlly detect the event that the storage space is opened and closed;

The condition detecting component for putting new articles is configured to detect the condition of putting new articles in the same storage area of the storage space during the opening and closing process of the storage space;

The storage space temperature change detection component is configured to detect the temperature change of the storage space caused by the entry of outside air during the opening and closing process of the storage space;

The controller includes a memory and a processor, and a computer program is stored in the memory, and the computer program is used to implement the control method according to any one of the foregoing when executed by the processor.

Optionally, the detection component for the condition of the new article is a first infrared sensor, which is configured to detect that the storage space is the same when the storage space is opened and when the storage space is closed for a first preset time. The temperature of the items stored in the storage area to obtain the first temperature of the item and the second temperature of the item in the same storage area respectively;

The temperature change detection component of the storage space is a second infrared sensor, which is configured to detect the same wall area of the storage space when the storage space is opened and at a first preset time after closing. To obtain the first wall temperature and the second wall temperature of the same wall area respectively.

Optionally, the second infrared sensor is further configured as:

If the difference between the second temperature of the item and the first temperature of the item in the same storage area is less than the third preset temperature threshold, or if the second temperature of the item and the first temperature of the item in the same storage area are The difference in temperature is greater than a first preset temperature threshold, and the difference between the second temperature of the wall and the first temperature of the wall in the same wall area is less than the second preset temperature threshold;

After the first preset time after the storage space is closed, continue to detect the temperature of the same wall area of the storage space to obtain the third wall temperature of the same wall area.

Optionally, the first infrared sensor is disposed above one of the walls of the storage space, and is configured to receive infrared rays radiated by the entire storage area of the storage space for storing items;

The second infrared sensor is arranged at a position near the front or rear of one of the side walls of the storage space, and is configured to receive the infrared radiation radiated by the area near the side wall of the front wall of the storage space or to receive the The area of the rear wall of the storage space close to the side wall radiates infrared rays.

The refrigerating and freezing device and the control method thereof of the present invention determine the timing of supplying cold air to the storage space according to the situation of new items placed in the storage space and the temperature change of the storage space, which can ensure that the storage space can be cooled when cooling is required. Cool down as soon as possible.

Further, the refrigerating and freezing device and the control method thereof of the present invention, when it is determined that there are new items in the storage space and the external environment has a certain degree of influence on the temperature of the original items in the storage space, the cold air is supplied to the storage space in a timely manner. Reduce the temperature of the storage space, cool down the new items and the original items in time, ensure the freshness of the new items and the storage period of the original items, and improve the intelligence of the refrigeration and freezing device.

Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will better understand the above and other objectives, advantages and features of the present invention.

Description of the drawings

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

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

Figure 2 is a block diagram of a refrigerating and freezing device according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a compartment of a refrigerating and freezing device according to an embodiment of the present invention, in which the infrared radiation receiving area of the first infrared sensor is shown;

4 is a schematic structural diagram of a compartment of a refrigerating and freezing device according to an embodiment of the present invention, in which the area where the second infrared sensor receives infrared radiation is shown;

Fig. 5 is a schematic diagram of a control method of a refrigerating and freezing device according to an embodiment of the present invention; and

Fig. 6 is an execution flow of a method for controlling a refrigerating and freezing device according to an embodiment of the invention applied to a refrigerator.

Detailed ways

This embodiment first provides a refrigerating and freezing device 100. The refrigerating and freezing device 100 of this embodiment will be described in detail below with reference to FIGS. 1 to 4.

The refrigerating and freezing device 100 of this embodiment may be a storage device with refrigerating and freezing functions such as a refrigerator or a freezer. It includes a box, an opening and closing detector 103, a detection component for the condition of new items, and a detection of the temperature change of the storage space. Component and controller 120.

The box body includes a storage space 110. The storage space 110 can be any compartment of the refrigerating and freezing device 100, for example, a refrigerating room, or a subspace of the compartment, for example, a drawer that can move back and forth. There is an accommodating space for accommodating the drawer, the accommodating space may have a forward opening, and the front side of the drawer has an end plate that closes the opening, and the drawer can be operated to move back and forth to open or close the storage space 110.

The opening and closing detector 103 is configured to controlly detect the event that the storage space 110 is opened and closed, so as to send corresponding signals to the controller 120 when the storage space 110 is opened and closed, so that the controller 120 can issue corresponding controls. instruction. The opening and closing detector 103 can use a Hall device or the like to detect whether the storage space 110 is opened or closed. When the drawer is used as the storage space 110, the opening and closing detector 103 can be respectively arranged on the end plate of the drawer and the corresponding accommodation Spatially.

The detection component for inserting new items is configured to detect the new items in the same storage area of the storage space 110 during the opening and closing process of the storage space 110, so as to provide the controller 120 for judging whether to insert the new items. Reference. The temperature change detection component of the storage space 110 is configured to detect the temperature change of the storage space 110 caused by the entry of outside air during the opening and closing process of the storage space 110, and is the controller 120 Provide data on the temperature change range of the storage space 110. The controller 120 includes a memory 122 and a processor 121, and a computer program 1221 is stored in the memory 122. The computer program 1221 is used to implement the following control method when executed by the processor 121.

In one of the embodiments, when the computer program 1221 is executed by the processor 121, the computer program 1221 is executed to determine the supply of cold air to the storage space 110 according to the situation of putting new items in the same storage area of the storage space 110 and the temperature change of the storage space 110 opportunity.

The refrigerating and freezing device 100 of this embodiment determines the timing of supplying cold air to the storage space 110 according to the situation of new items placed in the storage space 110 and the temperature change of the storage space 110, which can ensure that the storage space 110 can be cooled when cooling is required. Be cooled down as quickly as possible.

In some embodiments, the first infrared sensor 101 is the first infrared sensor 101, which is configured to detect that the storage space 110 is the same when the storage space 110 is opened and when the storage space 110 is closed for the first preset time. The temperature of the items stored in the storage area to obtain the first temperature of the item and the second temperature of the item in the same storage area respectively.

The storage space temperature change detection component is the second infrared sensor 102, which is configured to detect the temperature of the same wall area of the storage space 110 when the storage space 110 is opened and at the first preset time after closing, respectively, In order to obtain the first wall temperature and the second wall temperature in the same wall area respectively.

This embodiment uses the wall temperature of the storage space 110 to reflect the degree of influence on the temperature of the storage space 110 due to the entry of hot air from the outside during the opening process of the storage space 110. Compared with the detection of the temperature in the storage space 110 in the prior art As the reference value, the air temperature can more accurately reflect the degree of the influence of the hot outside air on the temperature of the original items in the storage space 110.

When the computer program 1221 is executed by the processor 121, the following steps are performed:

Calculate the difference between the second temperature of the item and the first temperature of the item in the same storage area, calculate the difference between the second temperature of the wall and the first temperature of the wall in the same wall area, if the second temperature of the item in the same storage area When the difference between the first temperature of the article and the first temperature is equal to or greater than the first preset temperature threshold, and the difference between the second temperature of the wall and the first temperature of the wall is equal to or greater than the second preset temperature, the storage space 110 For the first preset time after being closed, cool air is supplied to the storage space 110.

When the storage space 110 is opened and closed, the temperature changes of items in the same storage area are on the one hand affected by the entry of outside air, on the other hand, it may be due to the introduction of new items. The entry of outside air has a relatively greater impact on the temperature of the items. The temperature of the new item is relatively small compared to the original item in the storage space 110. By setting the first preset temperature threshold reasonably, the degree of temperature change of the items in the same storage area can be used to determine whether there is a new item in it. . When the storage space 110 is opened and closed, the temperature change of the same wall area of the storage space 110 can directly and accurately reflect the influence of the entry of outside air on the temperature of the original items in the storage space 110. Therefore, when the same wall is When the temperature of the area changes greatly, it means that the outside air enters more, which has a greater impact on the temperature of the original article. In this way, when it is determined that there are new items in the storage space 110 and the external environment has a certain degree of influence on the temperature of the original items in the storage space 110, cool air is supplied to the storage space 110, and the temperature of the storage space 110 is reduced in time. Cool down the new items and the original items to ensure the freshness of the new items and the storage period of the original items. This avoids that in the prior art, the cold air is supplied to the storage space 110 only when the temperature of the storage space 110 reaches the start-up point, which results in the inability to keep new items fresh and to cool the original items in time.

In the foregoing embodiment, the difference between the second temperature of the article in the storage space 110 and the first temperature of the article determines whether the storage space 110 is loaded with a new article. In an alternative embodiment, after the storage space 110 is closed, the difference between the second temperature of the items in the same storage area and the second temperature of the wall reflects whether the storage space 110 is put in during the opening process. New items.

The second infrared sensor 102 is also configured as:

If the difference between the second temperature of the item and the first temperature of the item in the same storage area is less than the third preset temperature threshold, or if the difference between the second temperature of the item and the first temperature of the item in the same storage area is greater than the first preset temperature Set a temperature threshold and the difference between the second temperature of the wall and the first temperature of the wall in the same wall area is less than the second preset temperature threshold;

After the first preset time after the storage space 110 is closed, continue to detect the temperature of the same wall area of the storage space 110 to obtain the third wall temperature of the same wall area.

When the computer program 1221 is executed by the processor 121, the following steps may also be performed:

When the third temperature of the wall is greater than the fourth preset temperature threshold, cool air is supplied to the storage space 110.

That is to say, when the storage space 110 is opened, the temperature of the items in the same storage area of the storage space 110 does not change much, or although the temperature of the items in the same storage area of the storage space 110 changes relatively greatly, However, when the temperature change of the same wall area is relatively small, the second infrared sensor 102 needs to continue to detect the temperature of the same wall area of the storage space 110. When the temperature of the wall area rises to a certain temperature, the second infrared sensor 102 needs to continue to detect the temperature of the storage space. 110 supplies cold air. Obviously, the third preset temperature threshold should be less than the first preset temperature threshold.

When the storage space 110 is opened and closed, if the temperature of the items in the same storage area does not change much, it means that no new items have been put in, and the entry of outside air has relatively little effect on the temperature of the original items in the storage space 110. This is not necessary at this time. Supply cold air to the storage space 110 immediately, but when the temperature of the storage space 110 rises to a certain level, supply cold air to the storage space 110, which can not only cool down the storage space 110 in time, but also avoid The compressor starts and stops frequently.

The same storage area in this embodiment may be the entire area in the storage space 110 that can accommodate items, and the first infrared sensor 101 may receive the aforementioned infrared radiation from the entire area, and monitor the temperature change of the items stored in the area. Generally, the output value of the infrared sensor is the average temperature value of the area it monitors.

The first infrared sensor 101 can be arranged above one of the walls of the storage space 110, and is configured to receive infrared radiation radiated by the entire storage area of the storage space 110 for storing items, so as to monitor the storage area of the entire storage area. Temperature changes. For example, if the storage space 110 is a drawer, the first infrared sensor 101 may be arranged on the rear wall of the containing space where the drawer is located and above the drawer.

The second infrared sensor 102 may be disposed at a position near the front or rear of one of the side walls of the storage space 110, and is configured to receive the infrared radiation radiated by the area near the side wall of the front wall of the storage space 110 or to receive the storage space 110 The area of the rear wall close to the side wall radiates infrared rays. For example, the second infrared sensor 102 is disposed at a rear position of a side wall of the storage space 110, and is configured to receive infrared rays radiated from an area near the side wall of the rear wall of the storage space 110. The arrangement of the second infrared sensor 102 and the receiving area range of the second infrared sensor 102 can prevent the items stored in the storage space 110 from being blocked.

In another embodiment, as shown in FIG. 3, the same storage area may include a first area C and a second area A, and the first area C and the second area A constitute the entire area of the storage space 110 that can accommodate items. . The first infrared sensor 101 may be configured to receive infrared rays radiated by items stored in the first area C, and the second infrared sensor 102 may be configured to receive infrared rays radiated from items stored in the second area A and a wall area B of the storage space 110 Infrared radiation. In other words, the first infrared sensor 101 and the second infrared sensor 102 are jointly configured to detect the temperature of the article in the entire area of the storage space 110 that can accommodate the article, and the second infrared sensor 102 is also configured to detect the same wall of the storage space 110. The temperature of the internal area.

In other words, the first infrared sensor 101 and the second infrared sensor 102 are jointly configured to detect the status of items stored in the same storage area of the storage space 110 when the storage space 110 is opened and at the first preset time after it is closed. Temperature to obtain the first temperature of the item and the second temperature of the item in the same storage area respectively; wherein, the first temperature of the item in the same storage area includes the first temperature of the item in the first area C and the first temperature of the item in the second area A Temperature, the second temperature of the item in the same storage area includes the second temperature of the item in the second area A and the second temperature of the item in the second area A. The second infrared sensor 102 is also configured to detect the temperature of the same wall area B of the storage space 110 when the storage space 110 is opened and at a first preset time after it is closed, so as to obtain the same wall area B respectively. The first temperature of the wall and the second temperature of the wall. In this embodiment, the entire area of the storage space 110 that can accommodate items is divided into two areas, and two infrared sensors are used to monitor temperature changes in the two areas respectively, and the temperature changes of the entire area of the storage space 110 that can accommodate items can also be obtained. , To avoid the area where an infrared sensor may have missing coverage, and at the same time use one of the infrared sensors to detect the temperature change of the corresponding wall, reducing the number of sensors.

For example, the first infrared sensor 101 is configured to detect the temperature of items stored in the first area C of the storage space 110 when the storage space 110 is opened and at a first preset time after it is closed, so as to obtain the first area C respectively. The first temperature of the item and the second temperature of the item in the first area C; the second infrared sensor 102 is configured to detect the temperature of the second area A and the same wall area of the storage space 110 when the storage space 110 is opened The temperature of B is to obtain the first temperature of the article in the second area A and the first temperature of the same wall area B respectively; the second infrared sensor 102 is also configured to be at a first preset time after the storage space 110 is closed, respectively The temperature of the second area A and the temperature of the same wall area B of the storage space 110 are detected to obtain the second temperature of the article in the second area A and the second temperature of the same wall area B, respectively.

The difference between the second temperature of the item in the same storage area and the first temperature of the item is: the difference between the second temperature of the item in the first area C and the first temperature of the item in the first area C, and the item in the second area A The difference between the second temperature and the first temperature of the article in the first zone C. When the computer program 1221 executes the aforementioned control method, when it is involved in determining the difference between the second temperature of the item in the same storage area and the first temperature of the item, it determines whether the second temperature of the item in the same storage area is When the difference between the first temperature of the article is greater than the first preset temperature threshold, one of the foregoing two differences only needs to satisfy the corresponding greater than the first preset temperature threshold to reflect the first area C and the second New items are placed in at least one area in area A. When it is determined that the difference between the second temperature of the item and the first temperature of the item in the same storage area is less than the third preset temperature threshold, the aforementioned two differences need to be less than the third preset temperature threshold at the same time to reflect the first area C. No new items are placed in the second area A.

Based on the aforementioned refrigerating and freezing device 100, this embodiment also provides a method for controlling the refrigerating and freezing device 100, as shown in FIG. 5, which includes:

S502: Detect an event that the storage space 110 is opened and closed;

S504: During the opening and closing process of the storage space 110, detect that new items are placed in the same storage area of the storage space 110, and detect that the storage space 110 is caused by the entry of outside air during the opening and closing process of the storage space 110 Temperature changes;

S506: Determine the timing of supplying cold air to the storage space 110 according to the situation of putting new items in the same storage area of the storage space 110 and the temperature change of the storage space 110.

The control method of the refrigerating and freezing device 100 of this embodiment determines the timing of supplying cold air to the storage space 110 according to the detection of new items in the storage space 110 and the temperature change of the storage space 110, which can ensure that the storage space 110 is in need. It can be cooled as quickly as possible during cooling.

There may be multiple ways to detect the situation of putting new items in the storage space 110. For example, in some embodiments, pressure or weight may be used to measure storage to determine whether the items in the storage space 110 have changed.

In some embodiments, the storage space 110 can be used to detect new items placed in the storage space 110 through temperature changes. Specifically, when the storage space 110 is opened and closed, it is detected that new items are placed in the same storage area of the storage space 110, and it is detected that the storage space 110 is caused by the entry of outside air during the opening and closing process of the storage space 110. The steps for temperature changes include:

When the storage space 110 is opened and at the first preset time after it is closed, the temperature of the items stored in the same storage area of the storage space 110 are respectively detected to obtain the first temperature of the item and the second temperature of the item in the same storage area. temperature;

When the storage space 110 is opened and at the first preset time after it is closed, the temperature of the same wall area of the storage space 110 is detected respectively to obtain the first wall temperature and the second wall temperature of the same wall area. temperature;

The steps of determining the timing of supplying cold air to the storage space 110 according to the situation of putting new items in the same storage area of the storage space 110 and the temperature change of the storage space 110 include:

Calculate the difference between the second temperature of the item in the same storage area and the first temperature of the item, and calculate the difference between the second temperature of the wall and the first temperature of the wall in the same wall area;

If the difference between the second temperature of the item and the first temperature of the item in the same storage area is equal to or greater than the first preset temperature threshold, and the difference between the second temperature of the wall and the first temperature of the wall is equal to or greater than the second preset When the temperature threshold is reached, cool air is supplied to the storage space 110 for the first preset time after the storage space 110 is closed.

As mentioned above, this embodiment uses the wall temperature of the storage space 110 to reflect the degree of influence of the storage space 110 on the temperature of the storage space 110 due to the entry of hot air from the outside during the opening process, which is compared with the detection of the storage space in the prior art The temperature of the air in the object space 110 is used as a reference value, which can more accurately reflect the degree of influence of the temperature of the original objects in the storage space 110 caused by the entry of outside hot air.

This embodiment judges whether there are new items in the storage space 110 according to the degree of temperature change of the items in the same storage area when the storage space 110 is opened and closed, and judges the outside world according to the degree of temperature change in the same wall area of the storage space 110 The degree of influence of air entry on the temperature of the original article. When it is judged that there are new items in the storage space 110 and the external environment has a certain degree of influence on the temperature of the original items in the storage space 110, cool air is supplied to the storage space 110, the temperature of the storage space 110 is reduced in time, and the new The items and original items are cooled down to ensure the freshness of new items and the storage period of the original items. This avoids that in the prior art, the cold air is supplied to the storage space 110 only when the temperature of the storage space 110 reaches the start-up point, which results in the inability to keep new items fresh and to cool the original items in time.

The step of determining the timing of supplying cold air to the storage space 110 according to the situation of putting new items in the same storage area of the storage space 110 and the temperature change of the storage space 110 further includes:

If the difference between the second temperature of the item and the first temperature of the item in the same storage area is less than the third preset temperature threshold, or if the difference between the second temperature of the item and the first temperature of the item in the same storage area is greater than the first preset temperature Set a temperature threshold and the difference between the second temperature of the wall and the first temperature of the wall in the same wall area is less than the second preset temperature threshold;

After the first preset time after the storage space 110 is closed, continue to detect the temperature of the same wall area of the storage space 110 to obtain the third temperature of the wall of the same wall area. When the third temperature of the wall is greater than the fourth temperature When the temperature threshold is preset, cool air is supplied to the storage space 110;

The third preset temperature threshold is less than the first preset temperature threshold.

As mentioned above, when the storage space 110 is opened, the temperature of the items in the same storage area of the storage space 110 does not change much, or although the temperature of the items in the same storage area of the storage space 110 changes relatively greatly, However, when the temperature change of the same wall area is relatively small, it is necessary to continue to detect the temperature of the same wall area of the storage space 110, and only when the temperature of the wall area rises to a certain temperature, cool air is supplied to the storage space 110.

When the storage space 110 is opened and closed, if the temperature of the items in the same storage area does not change much, it means that no new items have been put in, and the entry of outside air has relatively little effect on the temperature of the original items in the storage space 110. This is not necessary at this time. Supply cold air to the storage space 110 immediately, but when the temperature of the storage space 110 rises to a certain level, supply cold air to the storage space 110, which can not only cool down the storage space 110 in time, but also avoid The compressor starts and stops frequently.

As mentioned above, the same storage area may be the entire area where the storage space 110 can accommodate items or include the first area and the second area.

During the process of opening the storage space 110, record the time when the storage space 110 is opened;

If the storage space 110 is opened for longer than the second preset time, when the storage space 110 is closed, cool air is supplied to the storage space 110;

If the storage space 110 is opened for a time equal to or less than the second preset time, it is executed to determine the supply of cold to the storage space 110 based on the situation of putting new items in the same storage area of the storage space 110 and the temperature change of the storage space 110 The timing of the air steps.

That is to say, the control method of this embodiment first determines the time that the storage space 110 is opened this time. If the time is longer, for example, the second preset time is 5 minutes, and the opening time exceeds 5 minutes, it means that outside air has entered If there are more, it will have a relatively large impact on the temperature of both the original and new items in the storage space 110. At this time, when the storage space 110 is closed, cold air should be supplied to the storage space 110 immediately. When the door has not been opened for more than 5 minutes, the aforementioned steps are executed, and the timing of supplying cold air to the storage space 110 is determined according to the flow of each step to ensure the timely delivery of new and original items in the storage space 110 Cool down.

FIG. 6 is an execution flow of the control method of the refrigerating and freezing device 100 applied to a refrigerator according to an embodiment of the invention, and the execution flow includes the following steps:

S602: Detect an event that the storage space 110 is opened and closed;

S604, in the process of opening the storage space 110, record the time when the storage space 110 is opened;

S606: When the storage space 110 is opened and at the first preset time after it is closed, respectively detect the temperature of the items stored in the same storage area of the storage space 110 to obtain the first temperature and the first temperature of the items in the same storage area. The second temperature; when the storage space 110 is opened and at the first preset time after it is closed, respectively detect the temperature of the same wall area of the storage space 110 to obtain the first wall temperature and the first temperature of the same wall area respectively The second temperature of the wall;

S608: Determine whether the storage space 110 is opened for a time greater than a second preset time, if yes, execute step S610, if not, execute step S612;

S610, when the storage space 110 is closed, supply cold air to the storage space 110;

S612: Calculate the difference between the second temperature of the item in the same storage area and the first temperature of the item, and calculate the difference between the second temperature of the wall and the first temperature of the wall in the same wall area;

S614: Determine whether the difference between the second temperature of the article and the first temperature of the article is greater than a first preset temperature threshold and whether the difference between the second temperature of the wall and the first temperature of the wall is not less than the second preset temperature threshold, if yes, Perform step S616, if not, perform step S618;

S616: Supply cold air to the storage space 110 for a first preset time after the storage space 110 is closed;

S618, after the first preset time after the storage space 110 is closed, continue to detect the temperature of the same wall area of the storage space 110 to obtain the third wall temperature of the same wall area, when the third wall temperature is greater than At the fourth preset temperature threshold, cold air is supplied to the storage space 110.

The control method of this embodiment judges whether there are new items in the same storage area according to the degree of temperature change of the items, and judges whether outside air enters the original items in the storage space 110 according to the temperature change of the same wall area of the storage space 110 The degree of influence of temperature, when it is judged that there are new items in the storage space 110 and the external environment has a certain degree of influence on the temperature of the original items in the storage space 110, cool air is supplied to the storage space 110, and the storage space 110 is reduced in time. Temperature, cool down the new items and original items in time to ensure the freshness of the new items and the storage period of the original items.

So far, those skilled in the art should realize that although multiple exemplary embodiments of the present invention have been illustrated 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 that conform to 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 (10)

1. A control method of a refrigerating and freezing device, the refrigerating and freezing device comprising a box body defining a storage space, the control method comprising:

   Detecting an event that the storage space is opened and closed;

   When the storage space is opened and closed, it is detected that new items are placed in the same storage area of the storage space, and it is detected that the storage space is opened and closed due to the ingress of outside air. The temperature change of the object space;

   The timing of supplying cold air to the storage space is determined according to the situation of putting new items in the same storage area of the storage space and the temperature change of the storage space.
2. The control method according to claim 1, wherein

   In the process of opening and closing the storage space, detecting that new items are placed in the same storage area of the storage space, and detecting that the storage space is opened and closed due to the entry of outside air and causing the storage The steps of the space temperature change situation include:

   When the storage space is opened and at the first preset time after it is closed, respectively detect the temperature of the items stored in the same storage area of the storage space to obtain the first temperature and the first temperature of the items in the same storage area, respectively Second temperature

   When the storage space is opened and at the first preset time after it is closed, respectively detect the temperature of the same wall area of the storage space to obtain the first wall temperature and the wall portion of the same wall area respectively Second temperature

   The step of determining the timing of supplying cold air to the storage space according to the situation of putting new items in the same storage area of the storage space and the temperature change of the storage space includes:

   Calculating the difference between the second temperature of the article and the first temperature of the article in the same storage area, and calculating the difference between the second temperature of the wall and the first temperature of the wall in the same wall area;

   If the difference between the second temperature of the item and the first temperature of the item in the same storage area is equal to or greater than the first preset temperature threshold, and the difference between the second temperature of the wall and the first temperature of the wall When the value is equal to or greater than the second preset temperature threshold, cool air is supplied to the storage space for the first preset time after the storage space is closed.
3. The control method according to claim 2, wherein

   The step of determining the timing of supplying cold air to the storage space according to the situation of putting new items in the same storage area of the storage space and the temperature change of the storage space further includes:

   If the difference between the second temperature of the item and the first temperature of the item in the same storage area is less than the third preset temperature threshold, or if the second temperature of the item and the first temperature of the item in the same storage area are The temperature difference is greater than the first preset temperature threshold, and the difference between the wall second temperature and the wall first temperature in the same wall area is less than the second preset temperature threshold;

   After the first preset time after the storage space is closed, continue to detect the temperature of the same wall area of the storage space to obtain the third wall temperature of the same wall area. Supply cold air to the storage space when the temperature is greater than the fourth preset temperature threshold;

   The third preset temperature threshold is less than the first preset temperature threshold.
4. The control method according to claim 1, further comprising:

   During the process of opening the storage space, record the time when the storage space is opened;

   If the storage space is opened for a time longer than the second preset time, supply cold air to the storage space when the storage space is closed;

   If the storage space is opened for a time that is equal to or less than the second preset time, the execution is executed according to the situation of new items in the same storage area of the storage space and the temperature change of the storage space. The steps of the timing of supplying cold air to the storage space are described.
5. A refrigerating and freezing device, including:

   Box, including storage space;

   An opening and closing detector configured to controlly detect the event that the storage space is opened and closed;

   The condition detecting component for inserting new items is configured to detect the condition of putting new items in the same storage area of the storage space during the opening and closing process of the storage space;

   The storage space temperature change detection component is configured to detect the temperature change of the storage space caused by the entry of outside air during the opening and closing process of the storage space;

   The controller includes a memory and a processor, and a computer program is stored in the memory, and the computer program is used to implement the control method according to any one of claims 1 to 4 when the computer program is executed by the processor.
6. The refrigerating and freezing device according to claim 5, wherein

   The detection component for the condition of the new article is a first infrared sensor, which is configured to detect that the storage space is stored in the same storage area when the storage space is opened and when the storage space is closed for the first preset time. To obtain the first temperature of the item and the second temperature of the item in the same storage area respectively.
7. The refrigerating and freezing device according to claim 6, wherein

   The temperature change detection component of the storage space is a second infrared sensor, which is configured to detect the same wall area of the storage space when the storage space is opened and at a first preset time after closing. To obtain the first wall temperature and the second wall temperature of the same wall area respectively.
8. The refrigerating and freezing device according to claim 7, wherein

   The second infrared sensor is also configured as:

   If the difference between the second temperature of the item and the first temperature of the item in the same storage area is less than the third preset temperature threshold, or if the second temperature of the item and the first temperature of the item in the same storage area are The difference in temperature is greater than a first preset temperature threshold, and the difference between the second temperature of the wall and the first temperature of the wall in the same wall area is less than the second preset temperature threshold;

   After the first preset time after the storage space is closed, continue to detect the temperature of the same wall area of the storage space to obtain the third wall temperature of the same wall area.
9. The refrigerating and freezing device according to claim 6, wherein

   The first infrared sensor is arranged above one of the walls of the storage space, and is configured to receive infrared rays radiated from the entire storage area of the storage space for storing articles.
10. The refrigerating and freezing device according to claim 7, wherein

    The second infrared sensor is arranged at a position near the front or rear of one of the side walls of the storage space, and is configured to receive the infrared radiation radiated by the area near the side wall of the front wall of the storage space or to receive the The area of the rear wall of the storage space close to the side wall radiates infrared rays.

Images