Temperature control device, temperature control method and refrigerator having the same

Abstract

The present invention provides a temperature control device, a temperature control method and a refrigerator having the same, relating to the technical field of temperature control. The main purpose is to solve the demand contradiction between large cooling capacity and low cooling speed existing in the prior art in refrigerators. The temperature control device includes a cold storage device and an air inlet control device arranged in an instant cooling compartment. The cold storage device is located in the instant cooling compartment and provides cold quantity to the instant cooling compartment. The air inlet control device is used to control the connection or disconnection of the inflow of refrigeration gas into the instant cooling compartment. The temperature control method includes: obtaining the actual operating speed of the compressor; if the actual operating speed of the compressor is higher than the lowest set speed, setting the air inlet control device to be in a disconnected state. The refrigerator includes the temperature control device described in any one of the above, and further includes an instant cooling compartment. The present invention can effectively solve the contradiction between the low cooling rate of the instant cooling compartment and the large cold quantity demand in other spaces inside the refrigerator.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature control, and in particular to a temperature control device, a temperature control method and a refrigerator having the same. Background Art

[0002] Existing fresh-keeping technologies provide a freezing preservation technology using a supercooling function, such as Patent No. CN101636625A. This technology is mainly applied to an instant-cooling compartment, which can quickly cool from room temperature to near the freezing point of food, and then form a supercooled state at a slow cooling rate of 0.01 to 0.5 °C / hour until below the freezing point. During the above slow cooling process, in order to avoid too fast cooling rate, it is necessary to set the compressor providing cooling capacity and the fan delivering cooling capacity to operate at a lower speed. However, if the refrigerator is in a high-temperature environment or the refrigerator itself has a high load at this time, the compressor and fan operating at a low speed will not be able to meet the refrigeration requirements of the refrigerating compartment and the freezing compartment, resulting in insufficient cooling capacity in the above areas and unable to reach the set temperature, leading to a decline in the fresh-keeping quality of refrigerated food and abnormal freezing of frozen food, affecting the storage period; and if the compressor and fan operate at a high speed in this situation, excessive cooling capacity input will cause too fast supercooling rate, resulting in a large temperature drift in the instant-cooling compartment, increasing the possibility of supercooling failure, and ultimately affecting the preservation of frozen food.

[0003] In order to solve the contradiction between the large cooling capacity requirement of the refrigerator in special situations and the low cooling rate of the instant-cooling compartment, it is necessary to develop a new type of temperature control device, temperature control method and refrigerator having the same. Summary of the Invention

[0004] The purpose of the present invention is to provide a temperature control device, a temperature control method and a refrigerator having the same to solve the demand contradiction between the large cooling capacity and the low cooling rate of the refrigerator in the prior art. The many technical effects that can be produced by the preferred technical solutions provided by the present invention are described in detail below.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] The present invention provides a temperature control device, including a cold storage device and an air inlet control device arranged in the instant-cooling compartment, the cold storage device is located in the instant-cooling compartment and provides cooling capacity to the instant-cooling compartment; the air inlet control device is used to control the connection or cut-off of the refrigerant gas flowing into the instant-cooling compartment.

[0007] On the basis of the above technical solutions, the present invention can also be improved as follows.

[0008] As a further improvement of the present invention, the air inlet control device includes a damper, and the damper can switch between two states of opening and closing.

[0009] As a further improvement of the present invention, it further includes a first temperature sensor disposed in the instant cooling chamber and a second temperature sensor disposed outside the instant cooling chamber.

[0010] As a further improvement of the present invention, the outside of the instant cooling chamber includes a refrigerating chamber and / or a freezing chamber.

[0011] The present invention also provides a refrigerator, which includes the temperature control device described in any one of the above, and further includes an instant cooling chamber.

[0012] The present invention also provides a temperature control method applying the above temperature control device, including:

[0013] Obtain the actual operating speed of the compressor;

[0014] If the actual operating speed of the compressor is higher than the lowest set speed, set the air inlet control device to be in an off state.

[0015] As a further improvement of the present invention, it further includes:

[0016] Obtain the actual temperature outside the instant cooling chamber;

[0017] If the actual temperature outside the instant cooling chamber is not higher than the first temperature threshold, set the operating speed of the compressor according to the temperature of the instant cooling chamber;

[0018] If the actual temperature outside the instant cooling chamber is higher than the first temperature threshold, set the actual operating speed of the compressor according to the temperature outside the instant cooling chamber.

[0019] As a further improvement of the present invention, setting the operating speed of the compressor according to the temperature of the instant cooling chamber includes:

[0020] Obtain the actual temperature inside the instant cooling chamber;

[0021] If the actual temperature inside the instant cooling chamber is not higher than the second temperature threshold, set the compressor to be in a shutdown state;

[0022] If the actual temperature inside the instant cooling chamber is higher than the second temperature threshold, set the compressor to operate at the lowest set speed.

[0023] As a further improvement of the present invention, setting the actual operating speed of the compressor according to the temperature outside the instant cooling chamber includes:

[0024] It further includes a third temperature threshold, and the third temperature threshold is higher than the first temperature threshold;

[0025] If the actual temperature outside the flash-freezing compartment does not exceed the third temperature threshold, set the compressor to operate at the lowest set speed;

[0026] If the actual temperature outside the flash-freezing compartment exceeds the third temperature threshold, set the operating speed of the compressor to be higher than the lowest set speed.

[0027] The present invention also provides a refrigerator, comprising:

[0028] One or more memories storing executable programs thereon;

[0029] One or more processors for executing the executable programs in the memory to implement the steps of the above-described method.

[0030] Compared with the prior art, the technical solution provided by the preferred embodiment of the present invention has the following beneficial effects:

[0031] By providing a cold storage device and an independent air inlet control device in the flash-freezing compartment, either the cold storage device or the air inlet control device can be flexibly selected as the cold source according to the operation of the compressor, so as to ensure that the flash-freezing compartment can maintain a slower cooling rate during an appropriate time period according to the refrigeration requirements, avoid affecting the cold demand of the refrigerating compartment and / or the freezing compartment due to the flash-freezing compartment, and effectively solve the contradiction between the low cooling rate of the flash-freezing compartment and the large cold demand of other spaces in the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 is a schematic structural diagram of the temperature control device of the present invention;

[0034] Figure 2 is a schematic structural diagram of the refrigerator of the present invention;

[0035] Figure 3 is a schematic flowchart of the temperature control method of the present invention.

[0036] In the figure: 1, flash-freezing compartment; 2, cold storage device; 3, air damper; 4, refrigerating compartment; 5, freezing compartment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Embodiment 1:

[0041] The present invention provides a temperature control device, including a cold storage device 2 arranged in the instant cooling compartment 1 and an air inlet control device. The cold storage device 2 is located in the instant cooling compartment 1 and provides cold to the instant cooling compartment 1; the air inlet control device is used to control the connection or disconnection of the inflow of refrigerating gas into the instant cooling compartment 1.

[0042] The above-mentioned cold storage device 2 is located in the instant cooling compartment 1, and the air inlet control device is connected to the instant cooling compartment 1 and can control whether the gas carrying cold can flow into the instant cooling compartment 1. When the instant cooling compartment 1 is normally connected to the compressor and the air duct providing cold through the air inlet control device, at this time, the above-mentioned cold storage device 2 can absorb the cold transported to the instant cooling compartment 1 through the air duct and store the cold; when the above-mentioned air inlet control device is in the disconnected state and the refrigerating gas cannot flow into the instant cooling compartment 1, the cold storage device 2 can control the instant cooling compartment 1 to stably be in a slow cooling state by releasing cold.

[0043] It should be noted that the above air inlet control device can be used to independently control the instant cooling compartment 1. When it is in the connected state, the gas carrying cold can flow into the instant cooling compartment 1; when it is in the disconnected state, it will not affect the inflow of cold into other spaces except the instant cooling compartment 1. In addition, the above cold storage device 2 is a device capable of storing cold and is made of a cold storage material. The raw materials and processing methods of the cold storage material are prior art and will not be elaborated here.

[0044] The above instant cooling compartment 1 can be arranged in the refrigerating compartment 4 and isolated separately, as Figure 1 shown. At this time, the refrigerating compartment 4 and the freezing compartment 5 are respectively subjected to air supply and refrigeration treatment by independent air doors 3. The above instant cooling compartment 1 can also be independently arranged between the refrigerating compartment 4 and the freezing compartment 5.

[0045] As an optional implementation manner, the above air inlet control device includes an air door 3, and the air door 3 can be switched between two states of opening and closing.

[0046] When the air door 3 is in the open state, the gas carrying cold can flow into the instant cooling compartment 1 through the air door 3; when the air door 3 is in the closed state, the gas carrying cold cannot enter the instant cooling compartment 1 at this time.

[0047] As an optional implementation manner, it further includes a first temperature sensor arranged in the instant cooling compartment 1 and a second temperature sensor arranged outside the instant cooling compartment 1.

[0048] The above two temperature sensors are respectively used to detect the temperature inside and outside the instant cooling compartment 1. The difference between the detected actual temperature and the set temperature can be used to judge the load of the corresponding equipment, and then control the operating state of the compressor. When the compressor is at high speed, at this time the compressor can prepare a large amount of cold. Correspondingly, it is necessary to control the above air door 3 to be in the closed state.

[0049] As an optional implementation manner, outside the instant cooling compartment 1 includes the refrigerating compartment 4 and / or the freezing compartment 5.

[0050] It should be noted that the above refrigerating compartment 4 and / or the freezing compartment 5 also include independently arranged air doors.

[0051] It can be understood that the temperature control device provided in this embodiment can switch the instant cooling compartment 1 between different cooling states by controlling the on-off state of the air inlet control device connected to the instant cooling compartment 1: when the instant cooling compartment 1 is in the slow cooling stage, it can be determined according to the operating state of the compressor which structure in the compressor or the cold storage device 2 provides cold, so that the instant cooling compartment 1 is not affected by the operating state of the compressor and always maintains its slow cooling state.

[0052] Embodiment 2:

[0053] The present invention also provides a refrigerator, which includes the temperature control device described in any one of the above, and further includes an instant cooling compartment 1, as Figure 2 shown.

[0054] Embodiment 3:

[0055] The present invention also provides a temperature control method applying the above temperature control device, as Figure 3 shown, including:

[0056] Step S1: Obtain the actual operating speed of the compressor;

[0057] Step S2: If the actual operating speed of the compressor is higher than the lowest set speed, set the air inlet control device to the off state.

[0058] Generally speaking, the instant cooling function of the refrigerator includes multiple different cooling procedures. The cooling logic of the instant freezing function is described below:

[0059] When the above instant cooling function is started, first, set the instant cooling compartment 1 to the rapid cooling state. At this time, the compressor speed gradually increases from the lowest speed to the highest speed and continues to run for a certain period of time. In this embodiment, this time is 5h. Finally, the temperature in the instant cooling compartment 1 drops to 2°C. During this stage, the above air inlet control device is in the connected state, and the cold generated by the compressor can enter the instant cooling compartment 1 through the air door 3. At this time, the refrigerating compartment 4 and the freezing compartment 5 are refrigerated according to the normal refrigeration rules; then set the instant cooling compartment 1 to enter the slow cooling state, and at this time the compressor needs to run at the lowest speed. This slow cooling state includes three different stages. The first stage lasts for 3h, and at this time the temperature in the instant cooling compartment 1 drops from 2°C to -3°C; the second stage and the third stage each last for 2h, and the temperature in the instant cooling compartment 1 drops by one degree respectively during the above stages. After the third stage ends, the temperature in the instant cooling compartment 1 drops to -5°C. Finally, set the instant cooling compartment 1 to enter the rapid cooling state again. At this time, the compressor runs at the highest speed again for two hours, and the temperature in the instant cooling compartment 1 drops from -5°C to -18°C. Then the compressor stops running, and the instant freezing function is completed. Or, it is also possible to set the temperature in the instant cooling compartment 1 to slowly rise from -18°C to -5°C and then repeat the above rapid cooling process until the instant freezing function is turned off.

[0060] The above operating procedures are shown in the following table:

[0061] Step Instant freezing temperature / °C Control time / h Compressor speed Freezing fan voltage The first step 2 5 S8 V2 The second step -3 3 S0 V1 The third step -4 2 S0 V1 The fourth step -5 2 S0 V1 The fifth step -18 2 S8 V1 Exit -5

[0062] In the figure, S0 refers to the lowest set speed of the compressor, and S8 refers to the highest set speed of the compressor; when the speed of the compressor is different, the speed of the corresponding refrigeration fan is different, and at this time the voltage at the refrigeration fan is not exactly the same.

[0063] It should be noted that the above temperature and the specific control time can be adjusted according to actual needs. The above content is only an example and does not limit the protection scope of this solution.

[0064] The temperature control method provided in this embodiment is applied to the above-mentioned slow cooling stage. In this process, the working state of the above air inlet control device can be controlled by the actual rotation speed of the compressor. If the compressor is in a shutdown state or operates at the lowest set rotation speed, the air inlet control device is in a connected state. At this time, the instant cooling compartment 1 provides cold energy through the compressor. If the actual operating rotation speed of the compressor is higher than the lowest set rotation speed, the air inlet control device is set to be in a disconnected state, and the above air damper 3 is closed. At this time, the instant cooling compartment 1 provides cold energy through the cold storage device 2, which can effectively avoid the temperature drift in the instant cooling compartment 1 due to too fast cooling, and at the same time can ensure the food preservation in other spaces in the refrigerator except the instant cooling compartment 1.

[0065] When the instant cooling compartment 1 is in the rapid cooling stage, there is no contradiction between the cooling rate and the large cold quantity at this time, and the above air inlet control device is always in a connected state.

[0066] In order to better judge the action timing of the above temperature control method, it is necessary to obtain the time when the instant cooling function of the above instant cooling compartment 1 is started, that is, it is necessary to determine the working time and working duration of this temperature control method through a corresponding timing device.

[0067] When obtaining the actual operating rotation speed of the compressor, the rotation speed of the compressor can be continuously detected, or the actual operating rotation speed of the compressor can be detected according to a preset period.

[0068] The actual operating rotation speed of the above compressor is affected by temperature:

[0069] In this embodiment, it is necessary to obtain the actual temperature outside the instant cooling compartment 1 and determine the operating rotation speed of the compressor according to the situation between this temperature and the corresponding set temperature.

[0070] Specifically, if the actual temperature outside the instant cooling compartment 1 is not higher than the first temperature threshold, the operating rotation speed of the compressor is set according to the temperature of the instant cooling compartment 1; if the actual temperature outside the instant cooling compartment 1 is higher than the first temperature threshold, the actual operating rotation speed of the compressor is set according to the temperature outside the instant cooling compartment 1.

[0071] The above first temperature threshold is the set temperature in the corresponding space. For example, when the outside of the instant cooling compartment 1 is set as the refrigerating compartment 4, the above first temperature threshold is the set temperature of the refrigerating compartment 4 (if the set temperature of the refrigerating compartment 4 is a range value, the first temperature threshold is set as the highest set temperature of the refrigerating compartment 4). Similarly, when the outside of the instant cooling compartment 1 is set as the freezing compartment 5, the above first temperature threshold is the set temperature of the freezing compartment 5.

[0072] That is to say, in this method, the operating speed of the compressor is set based on the outside of the above-mentioned instant cooling compartment 1 (i.e., the refrigerating compartment 4 and / or the freezing compartment 5). If the actual temperature outside the instant cooling compartment 1 is not higher than the first temperature threshold, it indicates that the space outside the instant cooling compartment 1 does not need refrigeration treatment at this time. At this time, it is necessary to further set the operating speed of the compressor according to the temperature inside the instant cooling compartment 1; if the actual temperature outside the instant cooling compartment 1 is higher than the first temperature threshold, it indicates that the space outside the instant cooling compartment 1 needs refrigeration treatment at this time. At this time, the operating speed of the compressor needs to be set according to the required refrigerating capacity outside the instant cooling compartment 1.

[0073] The following respectively sets the rotational speed of the compressor according to the above two different situations:

[0074] When it is necessary to set the operating speed of the compressor according to the temperature of the instant cooling compartment 1, the actual temperature inside the instant cooling compartment 1 needs to be obtained at this time. If the actual temperature inside the instant cooling compartment 1 is not higher than the second temperature threshold, the compressor is set to the shutdown state; if the actual temperature inside the instant cooling compartment 1 is higher than the second temperature threshold, the compressor is set to operate at the lowest set speed.

[0075] Specifically, the above-mentioned second temperature threshold refers to the set temperature at the corresponding stage in the current slow cooling state. For example, any one of the temperature values of -3°C, -4°C, and -5°C described above. If the actual temperature inside the instant cooling compartment 1 is not higher than the second temperature threshold, it indicates that the target set temperature has been reached inside the instant cooling compartment 1 at this time and no refrigeration treatment is required. At this time, the compressor is in the shutdown state; otherwise, it indicates that the instant cooling compartment 1 has not reached the target temperature, and the compressor is set to operate at the lowest operating speed until the temperature inside the instant cooling compartment 1 is not higher than the second temperature threshold.

[0076] When it is necessary to set the actual operating speed of the compressor according to the temperature outside the instant cooling compartment 1, a third temperature threshold is set at this time, and the third temperature threshold is higher than the first temperature threshold. When the temperature outside the instant cooling compartment 1 is between the first temperature threshold and the third temperature threshold, a small amount of cold is required outside the instant cooling compartment 1 at this time, and the operating speed of the compressor is set to the lowest set speed. In this state, the air door 3 of the instant cooling compartment 1 is in the open state. When the actual temperature outside the instant cooling compartment 1 exceeds the third temperature threshold, a large amount of cold and a high refrigeration rate are required outside the instant cooling compartment 1 at this time, and the operating speed of the compressor is set higher than the lowest set speed.

[0077] It can be understood that through the above technical solution, the contradiction between the low cooling rate of the instant cooling compartment 1 and the large cold demand of other areas of the refrigerator during the slow cooling stage can be effectively overcome. It can not only maintain the temperature stability inside the instant cooling compartment 1 and ensure a smooth transition through the supercooling stage, but also meet the cold demand in other spaces of the refrigerator and ensure the food preservation effect.

[0078] Example 4:

[0079] The present invention also provides a temperature control device, comprising:

[0080] An acquisition module, configured to acquire the actual operating speed of the compressor;

[0081] A control module, configured to set the air inlet control device in a disconnected state when the actual operating speed of the compressor acquired by the acquisition module is higher than the minimum set speed.

[0082] For the implementation manners and beneficial effects of each module in this embodiment, reference may be made to the descriptions of the relevant steps in Embodiment 3, which will not be elaborated herein.

[0083] It can be understood that the technical solution provided in this embodiment can adjust the working state of the air inlet control device by acquiring the actual operating speed of the compressor and according to the magnitude of the actual operating speed of the compressor, so as to avoid a large amount of cold generated by the compressor from affecting the cooling rate of the instant cooling compartment 1; in addition, this embodiment can also switch the cold source of the instant cooling compartment 1 by adjusting the on / off state of the air inlet control device. When the instant cooling compartment 1 is provided with cold by the cold storage device 2, the instant cooling compartment 1 can achieve the effect of slow cooling by means of the continuously released cold of the cold storage device 2.

[0084] Example 5:

[0085] The present invention also provides a refrigerator, comprising:

[0086] One or more memories, on which executable programs are stored;

[0087] One or more processors, configured to execute the executable programs in the memories to implement the steps of the above-mentioned method.

[0088] Regarding the refrigerator in the above embodiments, the specific manner in which the processor executes the programs in the memories has been described in detail in Embodiment 3 of the method, and will not be elaborated herein.

[0089] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not described in detail in some embodiments can be referred to the same or similar content in other embodiments.

[0090] It should be noted that in the description of the present application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified, the meanings of "a plurality" and "multiple" refer to at least two.

[0091] It should be understood that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may be intervening elements; when an element is referred to as "connected to" another element, it can be directly connected to the other element or there may be intervening elements. In addition, the "connection" used herein may include a wireless connection; the phrase "and / or" includes any and all combinations of one or more of the associated listed items.

[0092] Any process or method description shown in a flowchart or described otherwise herein can be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a specific logical function or process step. The scope of the preferred embodiments of the present application includes additional implementations where functions may be executed not in the order shown or discussed, including in a substantially simultaneous manner according to the involved functions or in a reverse order, which should be understood by those skilled in the art to which the embodiments of the present application pertain.

[0093] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following well-known technologies in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0094] Those of ordinary skill in the art of the present technology can understand that all or part of the steps carried out in implementing the above-described embodiment methods can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0095] In addition, each functional unit in the various embodiments of the present application can be integrated into one processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0096] The above-mentioned storage medium can be a read-only memory, a magnetic disk, an optical disc, etc.

[0097] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. 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 application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0098] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A temperature control method for a temperature control device, characterized in that, The temperature control device includes a cold storage device and an air inlet control device arranged in the instant cooling compartment. The cold storage device is located in the instant cooling compartment and provides cold to the instant cooling compartment. The air inlet control device is used to control the connection or disconnection of the inflow of refrigeration gas into the instant cooling compartment. The temperature control method includes: Obtaining the actual operating speed of the compressor. If the actual operating speed of the compressor is higher than the minimum set speed, set the air inlet control device to the off state.

2. The temperature control method according to claim 1, characterized in that, The air inlet control device includes a damper, and the damper can switch between two states: open and closed.

3. The temperature control method according to claim 1, characterized in that, It also includes a first temperature sensor arranged in the instant cooling compartment and a second temperature sensor arranged outside the instant cooling compartment.

4. The temperature control method according to claim 3, characterized in that, Outside the instant cooling compartment includes a refrigerating compartment and / or a freezing compartment.

5. The temperature control method according to claim 1, characterized in that, It also includes: Obtaining the actual temperature outside the instant cooling compartment. If the actual temperature outside the instant cooling compartment is not higher than the first temperature threshold, set the operating speed of the compressor according to the temperature of the instant cooling compartment. If the actual temperature outside the instant cooling compartment is higher than the first temperature threshold, set the actual operating speed of the compressor according to the temperature outside the instant cooling compartment.

6. The temperature control method according to claim 5, characterized in that, Setting the operating speed of the compressor according to the temperature of the instant cooling compartment includes: Obtaining the actual temperature inside the instant cooling compartment. If the actual temperature inside the instant cooling compartment is not higher than the second temperature threshold, set the compressor to the shutdown state. If the actual temperature inside the instant cooling compartment is higher than the second temperature threshold, set the compressor to operate at the minimum set speed.

7. The temperature control method according to claim 5, characterized in that, Setting the actual operating speed of the compressor according to the temperature outside the instant cooling compartment includes: It also includes a third temperature threshold, and the third temperature threshold is higher than the first temperature threshold. If the actual temperature outside the instant cooling compartment does not exceed the third temperature threshold, set the compressor to operate at the minimum set speed. If the actual temperature outside the instant cooling compartment exceeds the third temperature threshold, set the operating speed of the compressor to be higher than the minimum set speed.

8. A refrigerator, characterized in that, It includes: One or more memories, on which executable programs are stored. One or more processors, used to execute the executable programs in the memory to implement the steps of the method according to any one of claims 5-7.

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