Refrigerator and unfreezing control method of refrigerator

Abstract

The invention provides a refrigerator and an unfreezing control method of the refrigerator. The unfreezing control method comprises the following steps: acquiring the environment temperature and the environment absolute humidity in an unfreezing space where a to-be-unfrozen object is located in advance in an unfreezing process; and obtaining the saturated absolute humidity at the corresponding temperature according to the environment temperature. And finally, comparing the numerical values of the environmental absolute humidity and the saturated absolute humidity, and determining whether the unfreezing space needs to be humidified or not according to the difference value of the environmental absolute humidity and the saturated absolute humidity. And when the environmental absolute humidity is lower than the saturated absolute humidity, the unfreezing space is humidified, so that the environmental absolute humidity in the unfreezing space can be increased, and the difference value between the environmental absolute humidity and the saturated absolute humidity is reduced. The difference value between the environmental absolute humidity and the saturated absolute humidity is reduced, so that the loss of juice in the to-be-unfrozen object is reduced, and the taste of the to-be-unfrozen object is retained. The invention further provides the refrigerator comprising the unfreezing control method.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and particularly to a refrigerator and a thawing control method thereof. Background Art

[0002] At present, in order to store meat ingredients for a long time, users usually store them in a frozen manner. When using frozen ingredients, thawing and slicing are required. Common thawing methods include natural thawing, radio frequency thawing, microwave thawing, etc. When using gas as a thawing medium, the gas flows on the surface of the ingredient and exchanges heat with the ingredient. During the process of gas flow, the moisture on the surface of the ingredient will be carried away, resulting in the loss of juice on the surface of the ingredient, excessive air drying of the ingredient, and damage to the taste of the ingredient. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a refrigerator and a thawing control method thereof that overcome the above problems or at least partially solve the above problems. Solve the problem of juice loss during thawing of ingredients, avoid air drying of ingredients, and maintain the taste of ingredients.

[0004] Specifically, the present invention provides a thawing control method for a refrigerator, and the thawing control method includes:

[0005] Obtain the ambient temperature and ambient absolute humidity of the medium in the thawing space where the object to be thawed is located;

[0006] Obtain the saturated absolute humidity of the medium at the ambient temperature;

[0007] Humidify the thawing space according to the ambient absolute humidity and the saturated absolute humidity.

[0008] Optionally, the humidifying the thawing space according to the ambient absolute humidity and the saturated absolute humidity includes:

[0009] Calculate the difference between the ambient absolute humidity and the saturated absolute humidity;

[0010] Humidify the thawing space according to the difference.

[0011] Optionally, the thawing control method further includes:

[0012] Dehumidify the thawing space according to the difference.

[0013] Optionally, the refrigerator includes a thawing device, and the thawing device thaws the object to be thawed through the medium in the thawing space, and the ambient temperature is the thawing temperature provided by the thawing device; the control method further includes:

[0014] Obtain the freezing point temperature of the object to be thawed and the surface temperature of the object to be thawed;

[0015] Control the thawing device so that, in part or all of the stages of the thawing process of the object to be thawed based on the start of thawing, the surface temperature of the object to be thawed is always lower than or equal to the freezing point temperature.

[0016] Optionally, the controlling the thawing device includes:

[0017] Determine a first preset thawing temperature according to the freezing point temperature; the first preset thawing temperature is equal to or lower than the freezing point temperature of the object to be thawed and higher than the storage temperature of the object to be thawed;

[0018] Thaw the object to be thawed so that the surface temperature of the object to be thawed reaches a preset surface temperature, and the preset surface temperature is lower than or equal to the freezing point temperature;

[0019] After the surface temperature of the object to be thawed reaches the preset surface temperature, thaw the object to be thawed according to the first preset thawing temperature.

[0020] Optionally, the controlling the thawing device includes:

[0021] Determine a first preset thawing temperature according to the freezing point temperature; the first preset thawing temperature is equal to or lower than the freezing point temperature of the object to be thawed and higher than the storage temperature of the object to be thawed;

[0022] Thaw the object to be thawed for a preset duration and the surface temperature of the object to be thawed is lower than the freezing point temperature, or thaw the object to be thawed so that the surface temperature of the object to be thawed reaches the freezing point temperature;

[0023] Thaw the object to be thawed according to the first preset thawing temperature.

[0024] Optionally, the control method further includes:

[0025] Obtain the central temperature of the object to be thawed;

[0026] Stop thawing the object to be thawed according to the first preset thawing temperature based on the central temperature and the freezing point temperature, or

[0027] Stop thawing the object to be thawed according to the first preset thawing temperature based on the central temperature and the first preset thawing temperature.

[0028] Optionally, the controlling the thawing device further includes:

[0029] Determine a second preset thawing temperature according to the freezing point temperature; the second preset thawing temperature is higher than the freezing point temperature of the object to be thawed;

[0030] Thaw the object to be thawed according to the second preset thawing temperature so that the surface temperature of the object to be thawed reaches a preset surface temperature.

[0031] Optionally, the first preset thawing temperature is lower than the freezing point temperature; the thawing control method further includes:

[0032] After stopping thawing the object to be thawed according to the first preset thawing temperature, continue to thaw the object to be thawed according to a third preset thawing temperature;

[0033] The third preset thawing temperature is equal to the freezing point temperature.

[0034] The present invention also provides a refrigerator, which includes a thawing space, a memory and a processor. A control program is stored in the memory, and when the control program is executed by the processor, it is used to implement the thawing control method of the refrigerator described in any one of the above claims.

[0035] Optionally, the refrigerator further includes:

[0036] A second temperature measuring device, which is used to obtain the central temperature of the object to be thawed so that the thawing device stops thawing according to the central temperature.

[0037] Optionally, the second temperature measuring device is a probe thermometer. The refrigerator further includes:

[0038] A position sensing device, which is used to obtain the central position of the object to be thawed. The central position is the height center, the horizontal center or the longitudinal center position, or the position where the height center, the horizontal center and the longitudinal center intersect;

[0039] A propulsion device, which is configured to push the probe thermometer to the central position.

[0040] Optionally, the refrigerator further includes a first temperature measuring device, which is configured to detect the surface temperature of the object to be thawed;

[0041] The thawing device first makes the surface temperature of the object to be thawed reach a preset surface temperature, and after the surface temperature of the object to be thawed reaches the preset surface temperature, thaws the object to be thawed according to the preset thawing temperature;

[0042] The preset surface temperature is equal to or lower than the freezing point temperature of the object to be thawed and higher than the storage temperature of the object to be thawed.

[0043] In the thawing control method of the refrigerator of the present invention, during the thawing process, the ambient temperature and ambient absolute humidity of the medium in the thawing space where the object to be thawed is located are first obtained. The saturated absolute humidity of the medium at the corresponding temperature is obtained according to the ambient temperature. Finally, the values of the ambient absolute humidity and the saturated absolute humidity are compared, and whether it is necessary to humidify the thawing space is determined according to the difference between the ambient absolute humidity and the saturated absolute humidity. When the ambient absolute humidity is low, humidifying the thawing space can increase the ambient absolute humidity in the thawing space, reduce the loss of moisture in the object to be thawed, and retain the taste of the object to be thawed.

[0044] From the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more clearly aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but not restrictive manner. The same reference numerals in the drawings denote 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 drawings:

[0046] Figure 1 is a schematic flowchart of a thawing control method according to an embodiment of the present invention;

[0047] Figure 2 is a schematic flowchart of the humidifying process of a thawing control method according to an embodiment of the present invention;

[0048] Figure 3 is a schematic flowchart of the thawing process of a thawing control method according to an embodiment of the present invention;

[0049] Figure 4 is a schematic flowchart of the thawing process of a thawing control method according to another embodiment of the present invention;

[0050] Figure 5 is a schematic flowchart of the thawing process of a thawing control method according to another embodiment of the present invention;

[0051] Figure 6 is a schematic flowchart of the thawing process of a thawing control method according to another embodiment of the present invention;

[0052] Figure 7 is a schematic flowchart of the thawing process of a thawing control method according to another embodiment of the present invention;

[0053] Figure 8 is a schematic flowchart of the thawing process of a thawing control method according to another embodiment of the present invention;

[0054] Figure 9 is a schematic flowchart of the thawing process of the thawing control method according to another embodiment of the present invention

[0055] Figure 10 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;

[0056] Figure 11 is a schematic structural diagram of the thawing space of a refrigerator according to an embodiment of the present invention. Detailed implementation manners

[0057] Next, refer to Figures 1 to 11 to describe the refrigerator and the thawing control method of the refrigerator according to the embodiments of the present invention. In the description of the present embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features, that is, including one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0058] Unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific situations.

[0059] In addition, in the description of the present embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. That is, in the description of the present embodiment, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", or "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0060] In the description of this embodiment, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0061] There is a negative correlation between the hardness of the object to be thawed and the temperature of the object to be thawed, that is, the lower the temperature of the object to be thawed, the higher the corresponding hardness, and thus the more difficult it is to cut. In daily life, in order to achieve long-term preservation of food ingredients, people usually put the food ingredients into the freezer for freezing, and when using them, they need to be cut. Since the frozen food ingredients have a low temperature, they also have a high hardness and are difficult to cut.

[0062] In order to facilitate cutting, the food ingredients are usually thawed in advance. Common thawing methods include natural thawing, radio frequency thawing, microwave thawing, etc. When using a gas as the thawing medium, the gas flows on the surface of the food ingredients and exchanges heat with the food ingredients. During the process of gas flow, the moisture on the surface of the food ingredients will be carried away, resulting in the loss of juice on the surface of the food ingredients, causing the food ingredients to be overly air-dried and damaging the taste of the food ingredients.

[0063] Figure 1 is a schematic flowchart of the thawing control method according to an embodiment of the present invention, as Figure 1 shown, and with reference to Figures 2 to 11 , the embodiment of the present invention provides a thawing control method for a refrigerator. The control method includes:

[0064] Step S110, obtaining the ambient temperature and ambient absolute humidity in the thawing space 120 where the object to be thawed is located;

[0065] Step S120, obtaining the saturated absolute humidity of the medium at the ambient temperature;

[0066] Step S130, humidifying the thawing space 120 according to the ambient absolute humidity and the saturated absolute humidity.

[0067] Specifically, during the thawing process, first obtain the ambient temperature and ambient absolute humidity in the thawing space 120 where the object to be thawed is located. Obtain the saturated absolute humidity at the corresponding temperature according to the ambient temperature. The saturated absolute humidity refers to the humidity of the medium when the moisture is in a saturated state. Finally, compare the values of the ambient absolute humidity and the saturated absolute humidity, and determine whether it is necessary to humidify the thawing space 120 according to the difference between the ambient absolute humidity and the saturated absolute humidity. The medium is a gas, such as nitrogen, inert gas. Of course, air is preferably used to save costs.

[0068] If the environmental absolute humidity is lower than the saturated absolute humidity, the moisture of the object to be thawed will evaporate, resulting in the loss of the juice on the surface of the object to be thawed, drying the object to be thawed, and affecting the taste of the object to be thawed.

[0069] In this embodiment, humidification is performed in the thawing space 120 according to the environmental absolute humidity and the saturated absolute humidity. When the environmental absolute humidity is lower than the saturated absolute humidity, humidifying the thawing space 120 can increase the environmental absolute humidity in the thawing space 120 and reduce the difference between the environmental absolute humidity and the saturated absolute humidity. The reduction of the difference between the environmental absolute humidity and the saturated absolute humidity avoids the loss of juice in the object to be thawed and retains the taste of the object to be thawed.

[0070] As Figure 2 shown, in some embodiments of the control method of the present invention, the humidification in the thawing space 120 according to the environmental absolute humidity and the saturated absolute humidity includes:

[0071] Step S131, calculating the difference between the environmental absolute humidity and the saturated absolute humidity;

[0072] Step S132, humidifying the thawing space 120 according to the difference.

[0073] In this embodiment, the difference between the obtained environmental absolute humidity (H1) and the saturated absolute humidity (H0) is calculated. The said difference can be a relative difference or an absolute difference. In this embodiment, the relative difference is taken. The calculation formula of the relative difference (B) is: B = H0 / H1 - 100%. Whether to humidify the thawing space 120 is determined according to the relative difference. By controlling the humidification of the thawing space 120 through the difference between the environmental absolute humidity and the saturated absolute humidity, the triggering condition of humidification is increased and the control is precise. Preferably, the relative difference is 5% - 10%.

[0074] In some embodiments of the thawing control method of the present invention, the control method further includes: dehumidifying the thawing space 120 according to the difference. That is, whether to dehumidify is determined according to the difference between the environmental absolute humidity and the saturated absolute humidity in the thawing space.

[0075] In this embodiment, exemplarily, when the relative difference between the environmental absolute humidity and the saturated absolute humidity is 0 - 5% and remains for a preset duration, the thawing space 120 is dehumidified. The preset duration can be any value, preferably 3 min. When the environmental absolute humidity reaches the saturated absolute humidity, there is a possibility of condensation of the moisture in the thawing space 120. At this time, dehumidifying the thawing space 120 can avoid the generation of condensation.

[0076] As Figure 3As shown, in some embodiments of the thawing control method of the present invention, the refrigerator 100 includes a thawing device. The thawing device thaws the object to be thawed through the medium in the thawing space 120, and the ambient temperature provides the thawing temperature for the thawing device. The control method further includes:

[0077] Step S210, obtaining the freezing point temperature of the object to be thawed and the surface temperature of the object to be thawed;

[0078] Step S220, controlling the thawing device so that the surface temperature of the object to be thawed is always lower than or equal to the freezing point temperature during some or all stages of the thawing process of the object to be thawed based on the start of thawing.

[0079] In this embodiment, the freezing point temperature of the object to be thawed and the surface temperature of the object to be thawed are obtained, and the medium temperature of the thawing device is controlled to be lower than or equal to the freezing point temperature according to the temperature of the freezing point. The temperature rise of the object to be thawed depends on the heat exchange with the medium of the thawing device. By controlling the medium temperature of the thawing device, the surface temperature of the object to be thawed is made lower than or equal to the freezing point temperature. The freezing point temperature of the object to be thawed can be obtained according to a preset program, and the acquisition method is simple. The freezing point temperatures of different types of objects to be thawed may be different, which can be preset and stored in the preset program for the user to actively select, or for the refrigerator 100 to automatically identify the type of the object to be thawed and then automatically select. The water in the object to be thawed always exists in a solid form or is partially converted into a liquid, avoiding inconsistent internal heat conduction coefficients of the object to be thawed during the thawing process.

[0080] As Figure 4 shown, in some embodiments of the thawing control method of the present invention, the controlling the thawing device includes:

[0081] Step S221, determining a first preset thawing temperature according to the freezing point temperature; the first preset thawing temperature is equal to or lower than the freezing point temperature of the object to be thawed and higher than the storage temperature of the object to be thawed;

[0082] Step S222, thawing the object to be thawed so that the surface temperature of the object to be thawed reaches a preset surface temperature, and the preset surface temperature is lower than or equal to the freezing point temperature;

[0083] Step S223, after the surface temperature of the object to be thawed reaches the preset surface temperature, thawing the object to be thawed according to the first preset thawing temperature.

[0084] In this embodiment, a thawing device is used to heat up the object to be thawed. When the surface temperature of the object to be thawed rises to be close to or equal to the freezing temperature point, the surface temperature is controlled to remain unchanged, and the object to be thawed is thawed with a first preset thawing temperature higher than the surface temperature. Before thawing the object to be thawed with the first preset thawing temperature, the surface temperature of the object to be thawed has risen to be close to or equal to the freezing point temperature, reducing the subsequent thawing time.

[0085] As Figure 5 shown, in some other embodiments of the thawing control method of the present invention, the control of the thawing device includes:

[0086] Step S231, determining a first preset thawing temperature according to the freezing point temperature; the first preset thawing temperature is equal to or lower than the freezing point temperature of the object to be thawed and higher than the storage temperature of the object to be thawed;

[0087] Step S232, thawing the object to be thawed for a preset duration and the surface temperature of the object to be thawed is lower than the freezing point temperature;

[0088] Step S233, thawing the object to be thawed according to the first preset thawing temperature.

[0089] In this embodiment, for the preset thawing temperature, the object to be thawed is heated up with a first preset thawing temperature lower than or equal to the freezing point temperature. The time for the heating process is preset, and after the heating process, the surface temperature of the object to be thawed is lower than the freezing point temperature. The thawing method in this embodiment is for the first half or the middle part of the thawing process, aiming to heat up the object to be thawed while keeping the object to be thawed from melting, increasing the temperature of the object to be thawed and reducing the hardness of the object to be thawed.

[0090] As Figure 6 shown, in some other embodiments of the thawing control method of the present invention, the control of the thawing device includes:

[0091] Step S241, determining a first preset thawing temperature according to the freezing point temperature; the first preset thawing temperature is equal to the freezing point temperature of the object to be thawed;

[0092] Step S242, thawing the object to be thawed until the surface temperature of the object to be thawed reaches the freezing point temperature;

[0093] Step S243, thawing the object to be thawed according to the first preset thawing temperature.

[0094] In this embodiment, the first preset thawing temperature is equal to the freezing point temperature of the object to be thawed, and the temperature remains constant throughout the thawing process, which is simple to operate.

[0095] As Figure 7As shown, in some embodiments of the thawing control method of the present invention, after thawing the object to be thawed according to the first preset thawing temperature, the thawing control device further includes:

[0096] Step S250, determining a second preset thawing temperature according to the freezing point temperature; the second preset thawing temperature is higher than the freezing point temperature of the object to be thawed;

[0097] Step S260, thawing the object to be thawed according to the second preset thawing temperature so that the surface temperature of the object to be thawed reaches the preset surface temperature.

[0098] In this embodiment, in some stages of thawing, the surface temperature of the object to be thawed is raised to the preset surface temperature by the second preset thawing temperature, and after the surface temperature of the object to be thawed rises to the preset surface temperature, the thawing according to the second preset thawing temperature is stopped. The second preset thawing temperature is higher than the freezing point temperature, preferably increased by 5-10 °C on the basis of the freezing point temperature. The preset surface temperature is lower than or equal to the freezing point temperature, preferably equal to the freezing point temperature. The second preset thawing temperature is higher than the freezing point temperature and higher than the preset surface temperature, which is convenient for the surface temperature of the object to be thawed to quickly rise to the preset surface temperature and not start to melt.

[0099] As Figure 8 shown, in some embodiments of the thawing control method of the present invention, the control method further includes:

[0100] Step S310, obtaining the central temperature of the object to be thawed;

[0101] Step S320, stopping thawing the object to be thawed according to the first preset thawing temperature according to the central temperature and the freezing point temperature.

[0102] In this embodiment, the object to be thawed is thawed with the first preset thawing temperature to control the surface temperature of the object to be thawed to be equal to the freezing point temperature. When the central temperature is equal to the freezing point temperature, it indicates that the whole object to be thawed reaches the freezing point temperature. At this time, the thawing of the object to be thawed according to the first preset thawing temperature is stopped. By controlling the surface temperature to be equal to the freezing point temperature for thawing and stopping thawing when the central temperature is equal to the freezing point temperature, heat conduction can be ensured during the thawing process, and the object to be thawed can be taken out of the thawing space 120 after thawing to achieve complete thawing.

[0103] As Figure 9 shown, in some other embodiments of the thawing control method of the present invention, the control method further includes:

[0104] Step S410, obtaining the central temperature of the object to be thawed;

[0105] Step S420, stopping thawing the object to be thawed according to the first preset thawing temperature according to the central temperature and the first preset thawing temperature.

[0106] In this embodiment, the first preset thawing temperature is lower than the freezing point temperature and higher than the storage temperature. After the above program terminates, the overall temperature of the object to be thawed is below the freezing point temperature and it is still in a frozen state, but the temperature difference from the freezing point temperature is reduced. This enables the surface of the object to be thawed not to melt while increasing the temperature inside the object to be thawed.

[0107] In some embodiments of the thawing control method of the present invention, when the first preset thawing temperature is lower than the freezing point temperature, the thawing control method further includes:

[0108] After stopping thawing the object to be thawed according to the first preset thawing temperature, continue to thaw the object to be thawed according to the third preset thawing temperature. The third preset thawing temperature is equal to the freezing point temperature.

[0109] In this embodiment, the first preset thawing temperature is lower than the freezing point temperature and higher than the storage temperature. The object to be thawed has been heated up by the first preset temperature in the early stage. After the object to be thawed is heated up, it is thawed with the third preset thawing temperature. Thawing the object to be thawed after reducing the temperature difference between the object to be thawed and the freezing point temperature not only ensures the uniformity of thawing, but also enables the melted liquid to be reabsorbed by the cells during the thawing process, avoiding the loss of juice and retaining the original juice in the object to be thawed.

[0110] In some embodiments of the refrigerator 100 of the present invention, the refrigerator 100 further includes a thawing space, a memory, and a processor. A control program is stored in the memory, and when the control program is executed by the processor, it is used to implement the thawing control method of the refrigerator 100 in any of the above embodiments.

[0111] As Figure 10 and Figure 11 shown, in some embodiments of the refrigerator 100 of the present invention, the refrigerator 100 further includes a first temperature measuring device 121. The first temperature measuring device 121 is configured to detect the surface temperature of the object to be thawed. The thawing device first makes the surface temperature of the object to be thawed reach the preset surface temperature, and after the surface temperature of the object to be thawed reaches the preset surface temperature, thaw the object to be thawed according to the preset thawing temperature. The preset surface temperature is lower than the freezing point temperature of the object to be thawed and higher than the storage temperature of the object to be thawed.

[0112] Specifically, a preset surface temperature is set for the object to be thawed, and the preset surface temperature is lower than the thawing temperature of the object to be thawed. During the thawing process, the surface temperature of the object to be thawed is detected by the first temperature measuring device 121, and the first temperature measuring device 121 can be an infrared temperature sensor. A thawing device is used to increase the surface temperature of the object to be thawed. After the surface temperature of the object to be thawed reaches the preset surface temperature, the object to be thawed is thawed according to the preset thawing temperature. That is to say, the thawing device raises the surface temperature of the object to be thawed, reducing the difference from the freezing temperature. However, when the object to be thawed is still in a frozen state, the object to be thawed is thawed according to the preset thawing temperature.

[0113] In this embodiment, the first temperature measuring device 121 is set to be able to detect the surface temperature of the object to be thawed in real time and compare the difference between the surface temperature of the object to be thawed and the freezing point temperature. This avoids the situation where the surface temperature of the object to be thawed is higher than the freezing temperature point, thereby preventing the object to be thawed from melting and affecting the internal heat transfer, resulting in uneven thawing.

[0114] In some embodiments of the refrigerator 100 of the present invention, the refrigerator 100 further includes a second temperature measuring device 122. The second temperature measuring device 122 is used to obtain the central temperature of the object to be thawed so that the thawing device stops thawing according to the central temperature.

[0115] Specifically, the second temperature measuring device 122 detects the central temperature of the object to be thawed and stops thawing when the central temperature of the object to be thawed reaches the freezing point temperature. In this embodiment, detecting the central temperature of the object to be thawed facilitates determining whether the thawing of the object to be thawed is completed.

[0116] As Figure 11 shown, in some embodiments of the refrigerator 100 of the present invention, the second temperature measuring device 122 is a probe thermometer. The refrigerator 100 further includes a position sensing device 123 and a propulsion device 124. The position sensing device 123 is used to obtain the central position of the object to be thawed, and the central position is the height center, the horizontal center or the longitudinal center position. The propulsion device 124 is configured to push the probe thermometer to the central position.

[0117] In this embodiment, the position sensing device 123 obtains the central position of the object to be thawed, the propulsion device 124 pushes the probe thermometer to the central position, and the probe thermometer measures the temperature at the central position. The position sensing device 123 reduces the positioning error at the central position; the propulsion device helps to overcome the resistance of the object to be thawed, making it easier for the probe thermometer to enter the central position of the object to be thawed; the probe thermometer has high reliability in measuring temperature. The time when the probe thermometer enters the object to be thawed can be any moment during the thawing process. For example, at the beginning of thawing, when the surface temperature of the object to be thawed reaches the preset thawing temperature. Preferably, when the surface temperature of the object to be thawed reaches the preset thawing temperature, the resistance of the object to be thawed to the probe thermometer is smaller at this time.

[0118] In some embodiments of the refrigerator 100 of the present invention, the second temperature measuring device 122 is a probe thermometer. The refrigerator 100 further includes a position sensing device 123 and a propulsion device 124. The position sensing device 123 is used to obtain the central position of the object to be thawed, and the central position is the position where the height center, the lateral center, and the longitudinal center intersect. The propulsion device 124 is configured to push the probe thermometer to the central position.

[0119] In this embodiment, the central position of the object to be thawed is selected as the position where the height center, the lateral center, and the longitudinal center intersect. The central position selected in this way is closer to the lowest temperature point of the object to be thawed.

[0120] At this point, those skilled in the art should recognize that although a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and determined to cover all these other variations or modifications.

Claims

1. A thawing control method for a refrigerator, characterized in that, it includes: obtaining the ambient temperature and ambient absolute humidity of the medium in the thawing space where the object to be thawed is located; obtaining the saturated absolute humidity of the medium at the ambient temperature; humidifying the thawing space according to the ambient absolute humidity and the saturated absolute humidity.

2. The thawing control method according to claim 1, characterized in that, the humidifying the thawing space according to the ambient absolute humidity and the saturated absolute humidity includes: calculating the difference between the ambient absolute humidity and the saturated absolute humidity; humidifying the thawing space according to the difference.

3. The thawing control method according to claim 2, characterized in that, it further includes: dehumidifying the thawing space according to the difference.

4. The thawing control method according to claim 1, characterized in that, the refrigerator includes a thawing device, and the thawing device thaws the object to be thawed through the medium in the thawing space, and the ambient temperature is the thawing temperature provided by the thawing device; the control method further includes: obtaining the freezing point temperature of the object to be thawed and the surface temperature of the object to be thawed; controlling the thawing device so that the surface temperature of the object to be thawed is always lower than or equal to the freezing point temperature during a part or all of the stages of the thawing process of the object to be thawed based on the start of thawing.

5. The thawing control method according to claim 4, characterized in that, the controlling the thawing device includes: determining a first preset thawing temperature according to the freezing point temperature; the first preset thawing temperature is equal to or lower than the freezing point temperature of the object to be thawed and higher than the storage temperature of the object to be thawed; thawing the object to be thawed so that the surface temperature of the object to be thawed reaches a preset surface temperature, and the preset surface temperature is lower than or equal to the freezing point temperature; after the surface temperature of the object to be thawed reaches the preset surface temperature, thawing the object to be thawed according to the first preset thawing temperature.

6. The thawing control method according to claim 4, characterized in that, the controlling the thawing device includes: determining a first preset thawing temperature according to the freezing point temperature; the first preset thawing temperature is equal to or lower than the freezing point temperature of the object to be thawed and higher than the storage temperature of the object to be thawed; thawing the object to be thawed for a preset duration and the surface temperature of the object to be thawed is lower than the freezing point temperature, or thawing the object to be thawed so that the surface temperature of the object to be thawed reaches the freezing point temperature; thawing the object to be thawed according to the first preset thawing temperature.

7. The thawing control method according to claim 5 or 6, characterized in that, it further includes: obtaining the central temperature of the object to be thawed; stopping thawing the object to be thawed according to the first preset thawing temperature according to the central temperature and the freezing point temperature, or stopping thawing the object to be thawed according to the first preset thawing temperature according to the central temperature and the first preset thawing temperature.

8. The thawing control method according to claim 5 or 6, Characterized in that, The control of the thawing device further includes: Determining a second preset thawing temperature according to the freezing point temperature; the second preset thawing temperature is higher than the freezing point temperature of the object to be thawed; Thawing the object to be thawed according to the second preset thawing temperature so that the surface temperature of the object to be thawed reaches a preset surface temperature.

9. The thawing control method according to claim 7, Characterized in that, The first preset thawing temperature is lower than the freezing point temperature; The thawing control method further includes: After stopping thawing the object to be thawed according to the first preset thawing temperature, continuing to thaw the object to be thawed according to a third preset thawing temperature; The third preset thawing temperature is equal to the freezing point temperature.

10. A refrigerator, Characterized in that, The refrigerator includes a thawing space, a memory and a processor, and a control program is stored in the memory. When the control program is executed by the processor, it is used to implement the thawing control method of the refrigerator described in any one of claims 1 to 9.

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