Cold storage equipment, temperature control method and computer readable storage medium

Abstract

The invention provides cold storage equipment, a temperature control method and a computer readable storage medium. The cold storage equipment comprises a processor, a storage space, a first air duct, a second air duct and an air door. The processor is electrically connected with the air door. The processor is used for receiving a food material storage instruction and controlling the air door to move to the first working position or the second working position. When the air door is in the first working position, the first air duct communicates with the second air duct. When the air door is in the second working position, the first air channel communicates with the storage space. The first air duct is used for guiding cold air generated by the equipment into the storage space or the second air duct. The second air duct is used for guiding cold air to circulate around the storage space to prevent the temperature in the storage space from being too low.

Description

Technical Field

[0001] This application relates to the field of household appliances, and particularly to a cold storage device, a temperature control method, and a computer-readable storage medium. Background Art

[0002] With the rapid development of industrial technologies, more and more electrical appliances have entered people's lives. While bringing great convenience to people's lives, they are also continuously improving people's living standards. In particular, some cold storage devices can not only extend the storage time of items, allowing people to taste ingredients from different seasons or regions, but also effectively prevent food spoilage and reduce living costs. Moreover, for some ingredients, through the cold storage function of the cold storage device, their taste can be better improved, further enhancing the quality of life.

[0003] To ensure the quality and taste of ingredients, the ingredients are usually placed in the fresh-keeping chamber and maintained in a supercooled state. On the one hand, the supercooled state can keep the ingredients at a lower temperature to inhibit the reproduction of microorganisms; on the other hand, the supercooled state can prevent the ingredients from freezing and maintain their original state for easy access. To accurately control the ingredients near the freezing point without freezing, it is necessary to keep the temperature fluctuation in the fresh-keeping chamber as small as possible and have a relatively fast cooling speed. However, in related technologies, due to the single air duct structure in the fresh-keeping chamber and inaccurate temperature control, the cold storage device starts and stops frequently, the temperature fluctuation in the fresh-keeping chamber is relatively large, and the cooling speed is not good.

[0004] Therefore, it is necessary to provide an improved cold storage device and temperature control method to solve some or all of the above problems. Summary of the Invention

[0005] This application provides a cold storage device, a temperature control method, and a computer-readable storage medium with small cold storage temperature fluctuations and fast cooling.

[0006] This application provides a cold storage device, including a processor, a storage space, a first air duct, a second air duct, and a damper; the processor is electrically connected to the damper, receives an ingredient storage instruction, and controls the damper to move to a first working position or a second working position; when the damper is in the first working position, the first air duct is communicated with the second air duct; when the damper is in the second working position, the first air duct is communicated with the storage space; the first air duct is used to guide the cold air generated by the cold storage device into the storage space and the second air duct; the second air duct is used to guide the cold air to flow around the storage space.

[0007] Further, the first air duct is selectively connected to the second air duct and the storage space; the second air duct is arranged around the circumference of the storage space; when the damper is in the first working position, the cold air passes through the second air duct to change the temperature in the storage space.

[0008] Further, the cold storage device further includes a damper control device electrically connected to the processor; the damper control device is connected to the damper; the storage space is provided with a first air inlet, and the second air duct is provided with a second air inlet; the damper control device can drive the damper to move to block the first air inlet or the second air inlet.

[0009] Further, the cold storage device further includes a heating element; the heating element is disposed in the first air duct; the processor is electrically connected to the heating element to control the start and stop of the heating element.

[0010] Further, the cold storage device further includes a first temperature sensor, a second temperature sensor, and a third temperature sensor; the first temperature sensor is disposed in the storage space, the second temperature sensor is disposed at the air inlet of the first air duct, and the third temperature sensor is disposed at the air outlet of the first air duct; the first temperature sensor, the second temperature sensor, and the third temperature sensor are all electrically connected to the processor.

[0011] Further, the cold storage device further includes a refrigeration device and a receiving cavity for placing the refrigeration device; the air inlet of the first air duct is communicated with the receiving cavity; one end of the second air duct is connected to the air outlet of the first air duct, and the other end of the second air duct is communicated with the receiving cavity.

[0012] Further, the cold storage device further includes a camera; the camera is disposed in the storage space and is electrically connected to the processor; the camera is used for collecting image information of the food materials in the storage space and sending a food material storage instruction.

[0013] The present application provides a temperature control method applied to a cold storage device. The cold storage device includes a processor, a storage space, a first air duct, a second air duct, a damper, and a refrigeration device; the damper has a first working position and a second working position, wherein when the damper is in the first working position, the first air duct is communicated with the second air duct; when the damper is in the second working position, the first air duct is communicated with the storage space; the processor is configured to perform the following steps:

[0014] Step S1, receiving a food material storage instruction;

[0015] Step S2, determining whether the temperature T1 in the storage space is higher than a first storage temperature Ton; if so, starting the refrigeration device and controlling the damper to be in the first working position;

[0016] Step S3, determining whether the temperature T2 at the air inlet of the first air duct is higher than a preset air inlet temperature Ta;

[0017] If so, control the air damper to be in the second working position;

[0018] If not, adjust the temperature in the first air duct so that the outlet temperature T3 of the first air duct is within -8°C to -3°C to control the air damper to be in the second working position.

[0019] Further, the cold storage device further includes a camera electrically connected to the processor. The camera is used to collect image information in the storage space and send a food storage instruction to the processor.

[0020] Further, the step S3 includes: after the refrigeration device operates for a first preset duration t1, detect the inlet temperature T2 of the first air duct; if the inlet temperature T2 of the first air duct is higher than the preset inlet temperature Ta and the operation time in this state exceeds a second preset duration t2, control the air damper to be in the second working position.

[0021] Further, the cold storage device includes a heating element; the step S3 includes: if the inlet temperature T2 of the first air duct is less than or equal to the preset inlet temperature Ta, start the heating element so that the outlet temperature T3 of the first air duct is within -8°C to -5°C and control the air damper to be in the second working position.

[0022] Further, after starting the heating element, if the outlet temperature T3 of the first air duct is outside -8°C to -5°C, adjust the power of the heating element to change the temperature in the first air duct so that the outlet temperature T3 of the first air duct is within -8°C to -5°C.

[0023] Further, the heating elements are each adjusted in power at a constant time interval t0; and each power adjustment is increased or decreased by a fixed power difference ΔP.

[0024] Further, if the outlet temperature T3 of the first air duct is less than or equal to -8°C, control the heating element to increase the operating power by the fixed power difference ΔP every constant time interval t0 until the outlet temperature T3 of the first air duct is within -8°C to -5°C; or if the outlet temperature T3 of the first air duct is greater than -5°C, control the heating element to decrease the operating power by the fixed power difference ΔP every constant time interval t0 until the outlet temperature T3 of the first air duct is within -8°C to -5°C; the fixed power difference ΔP is 10% of the maximum power Pmax of the heating element.

[0025] Further, if the outlet temperature T3 of the first air duct is within -8°C to -5°C and the operation time in this state exceeds a third preset duration t3, control the heating element to continue operating at the current power.

[0026] Further, the step S3 includes: if the air outlet temperature T3 of the first air duct is less than or equal to -8°C, controlling the air damper to be in the first working position.

[0027] Further, the processor is further configured to execute step S4: if the temperature T1 in the storage space is less than or equal to the second storage temperature Toff, controlling the air damper to be in the first working position, and controlling the refrigeration device and the heating element to be turned off; the second storage temperature Toff is lower than the first storage temperature Ton.

[0028] The present application also provides a computer-readable storage medium, including a computer program stored thereon, where the computer program, when executed by a processor, implements the temperature control method as described above.

[0029] Compared with the prior art, the cold storage device of the present application is provided with a first air duct, a second air duct, and an air damper. When the air damper is switched to the first working position, the first air duct is communicated with the storage space; when the air damper is switched to the second working position, the first air duct is communicated with the second air duct. In this way, the cold air that meets the storage temperature can be directly blown into the storage space, ensuring that the food ingredients are quickly in a supercooled state. And the cold air with too low temperature can flow into the second air duct through the first air duct, and indirectly cool the storage space through the second air duct.

[0030] Through these two circulation modes of the cold air, not only can the food ingredients in the storage space be quickly in a supercooled state, but also through the alternating operation of these two modes, it is ensured that the cold air can continuously control the temperature of the storage space, ensuring that the temperature is always within a reasonable range. And due to the continuous cooling of the cold air, the temperature fluctuation in the storage space is small, which can better preserve the food ingredients and improve people's use experience.

[0031] By changing the working position of the air damper, the circulation mode of the cold air is changed, thereby ensuring that the storage temperature in the storage space is within a reasonable temperature range and improving the storage duration of the food ingredients.

[0032] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing the embodiments that conform to this specification, and are used together with the specification to explain the principles of this specification.

[0034] Figure 1 It is a schematic diagram of the air damper in the first working position in the cold storage device of the present application.

[0035] Figure 2It is a schematic diagram of the air damper of the cold storage device of this application in the second working position.

[0036] Figure 3 It is a flowchart of the temperature control method of this application.

[0037] Explanation of the reference numerals in the drawings: 1 - storage space; 11 - first air inlet; 2 - first air duct; 3 - second air duct; 31 - second air inlet; 4 - air damper; 5 - heating element; 61 - first temperature sensor; 62 - second temperature sensor; 63 - third temperature sensor; 7 - refrigeration device; 8 - accommodation cavity; 81 - air return port; 9 - fan. Detailed implementation manners

[0038] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all the implementation manners consistent with this specification. On the contrary, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0039] The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this specification. The singular forms "a", "the", and "said" used in this specification and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0040] It should be understood that although the terms first, second, third, etc. may be used in this specification to describe various information, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this specification, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".

[0041] Next, the embodiments of this specification will be described in detail.

[0042] As Figures 1 to 2As shown in the figure, the cold storage device of the present application includes a processor (not shown), a storage space 1, a first air duct 2, a second air duct 3, and a damper 4. The processor is used to receive a food storage instruction and control the operation of other components such as the damper 4. The storage space 1 is preferably a fresh-keeping chamber. The air inlet of the first air duct 2 is connected to the cavity where cold air is generated, and the air outlet of the first air duct 2 can be communicated with the storage space 1 or the second air duct 3 through the damper 4. The first air duct 2 is used to guide the cold air generated by the cold storage device into the storage space 1 and the second air duct 3.

[0043] In an embodiment, the second air duct 3 is arranged around the circumference of the storage space 1, and the second air duct 3 is used to guide the cold air to flow around the storage space 1. At the same time, the temperature of the cold air flowing through the second air duct 3 is lower than the temperature of the cold air flowing into the storage space 1, so that the relatively cold air indirectly cools the temperature inside the storage space 1, and at the same time prevents the relatively cold air from directly entering the storage space 1 for cooling, resulting in too low a temperature inside the storage space 1 and freezing the food. To ensure the cooling effect of the cold air, multiple second air ducts 3 can be provided on the circumference of the storage space 1. At the same time, the second air duct 3 can be arranged longitudinally or horizontally around the storage space 1.

[0044] The damper 4 is electrically connected to the processor, and after receiving the food storage instruction, the processor can control the damper 4 to move to the first working position or the second working position. The first air duct 2 is selectively connected to the second air duct 3 and the storage space 1. Specifically, when the damper 4 is in the first working position, the first air duct 2 is communicated with the second air duct 3, and the first air duct 2 is disconnected from the storage space 1, and the cold air flows through the first air duct 2 to the second air duct 3, indirectly changing the temperature inside the storage space 1.

[0045] When the damper 4 is in the second working position, the first air duct 2 is communicated with the storage space 1, and the first air duct 2 is disconnected from the second air duct 3, and the cold air flows through the first air duct 2 to the storage space 1, directly cooling the temperature inside the storage space 1, so that the food inside the storage space 1 quickly reaches a supercooled state.

[0046] Furthermore, the cold storage device includes a damper control device (not shown) electrically connected to the processor. The damper control device is connected to the damper 4, and after receiving the control instruction from the processor, the damper control device can control the damper 4 to move so that the damper 4 is in the first working position or the second working position.

[0047] The storage space 1 is provided with a first air inlet 11, and the second air duct 3 is provided with a second air inlet 31. To facilitate the entry of cold air into the storage space 1 or the second air duct 3, the first air inlet 11 and the second air inlet 31 are located above the storage space 1. When the air damper control device drives the air damper 4 to be in the first working position, the air damper 4 blocks the first air inlet 11, and the first air duct 2 communicates with the second air duct 3. When the air damper control device drives the air damper 4 to be in the second working position, the air damper 4 blocks the second air inlet 31, and the first air duct 2 communicates with the storage space 1.

[0048] In one embodiment, the cold storage device includes a heating element 5. The heating element 5 is arranged in the first air duct 2 and is located between the air inlet and the air outlet of the first air duct 2. The heating element 5 is used to change the temperature of the cold air flowing through the first air duct 2. The heating element 5 is electrically connected to the processor, and the processor controls the start-stop and power change of the heating element 5, so as to control the temperature of the cold air and ensure the freshness preservation degree and storage duration when storing food materials.

[0049] In one embodiment, the cold storage device includes a first temperature sensor 61, a second temperature sensor 62, and a third temperature sensor 63. The first temperature sensor 61 is arranged in the storage space 1 and is used to detect the temperature in the storage space 1. The second temperature sensor 62 is arranged at the air inlet of the first air duct 2 and is used to detect the temperature at the air inlet of the first air duct 2. The third temperature sensor 63 is arranged at the air outlet of the first air duct 2 and is used to detect the temperature at the air outlet of the first air duct 2. The first temperature sensor 61, the second temperature sensor 62, and the third temperature sensor 63 are all electrically connected to the processor, so as to timely feedback the temperature information to the processor.

[0050] In one embodiment, the cold storage device includes a refrigeration device 7, a receiving cavity 8 for placing the refrigeration device 7, and a blower 9. The cold air used to lower the temperature in the storage space 1 comes from the refrigeration device 7, and the refrigeration device 7 is an evaporator. The blower 9 is also arranged in the receiving cavity 8 and is used to accelerate the flow rate of the cold air flowing through the refrigeration device 7 and blow the cold air into the first air duct 2.

[0051] Specifically, the receiving cavity 8 includes a return air outlet 81. The air inlet of the first air duct 2 communicates with the receiving cavity 8. The second air inlet 31 at one end of the second air duct 3 can be connected to the air outlet of the first air duct 2, and the other end of the second air duct 3 communicates with the return air outlet 81. With such a setting, when the air damper 4 is in the first working position, the cold air can circulate in the receiving cavity 8, the first air duct 2, and the second air duct 3, and continuously perform cold storage and freshness preservation on the food materials in the storage space 1.

[0052] The first air inlet 11 of the storage space 1 can be connected to the air outlet of the first air duct 2, and at the same time, the storage space 1 is also communicated with the air return port 81. With such a setting, when the air damper 4 is in the second working position, the cold air can circulate in the accommodation cavity 8, the first air duct 2 and the storage space 1, continuously performing cold storage and preservation on the food materials in the storage space 1.

[0053] In one embodiment, the cold storage device includes a camera (not shown). The camera is located in the storage space 1 and is electrically connected to the processor. The camera is used to collect the image information in the storage space 1, and after recognizing that there are food materials in the storage space 1, it can send a food material storage instruction to the processor. With such a setting, the intelligence level of the cold storage device is improved, and people's usage experience is enhanced.

[0054] In another embodiment, after the camera collects the image information in the storage space 1, it can feedback this information to the processor, and the processor can identify by itself whether there are food materials, and then judge whether to perform preservation storage. With such a setting, only the camera needs to take pictures, reducing the workload of the camera, and thus also reducing the cost of the camera.

[0055] The cold storage device of the present application can be a refrigerator, a freezer or a cold storage.

[0056] The cold storage device of the present application is provided with the first air duct 2, the second air duct 3 and the air damper 4. When the air damper 4 is switched to the first working position, the first air duct 2 is communicated with the storage space 1; when the air damper 4 is switched to the second working position, the first air duct 2 is communicated with the second air duct 3. In this way, the cold air that meets the storage temperature can be directly blown into the storage space 1, ensuring that the food materials quickly reach the supercooled state. And the cold air with too low temperature can flow into the second air duct 3 through the first air duct 2, and the temperature in the storage space 1 is indirectly cooled through the second air duct 3.

[0057] Through these two circulation modes of the cold air, not only can the food materials in the storage space 1 quickly reach the supercooled state, but also these two modes operate alternately to ensure that the cold air can continuously control the temperature of the storage space 1, ensuring that the temperature is always within a reasonable range. And due to the continuous cooling of the cold air, the temperature fluctuation in the storage space 1 is small, which can better preserve the food materials, improve people's usage experience of this cold storage device, and enhance the market competitiveness of this cold storage device.

[0058] Further in combination with Figure 3 As shown, the present application also provides a temperature control method. This temperature control method is applied to the cold storage device as described above, so as to improve the storage effect of the food materials. This temperature control method is preferably applied to but not limited to the temperature control of the fresh-keeping chamber. The execution subject of this temperature control method is the processor.

[0059] Specifically, the processor is used to execute the following steps:

[0060] Step S1, receive the food ingredient storage instruction.

[0061] Step S2, determine whether the temperature T1 in storage space 1 is higher than the first storage temperature Ton. If so, start the refrigeration device 7 and control the air damper 4 to be in the first working position.

[0062] Step S3, determine whether the inlet air temperature T2 of the first air duct 2 is higher than the preset inlet air temperature Ta.

[0063] If so, control the air damper 4 to be in the second working position. If not, adjust the temperature in the first air duct 2 so that the outlet air temperature T3 of the first air duct 2 is within -8°C to -5°C, and control the air damper 4 to be in the second working position.

[0064] In one embodiment, the first temperature sensor 61 is used to detect the temperature T1 in storage space 1, the second temperature sensor 62 is used to detect the inlet air temperature T2 of the first air duct 2, and the third temperature sensor 63 is used to detect the outlet air temperature T3 of the first air duct 2.

[0065] In one embodiment, the fresh-keeping temperature range in storage space 1 is -5°C to -1°C. With such a setting, the fresh-keeping temperature below zero can keep the food ingredients in a relatively low temperature state to inhibit the reproduction of microorganisms. At the same time, the fresh-keeping temperature close to zero can prevent the food ingredients from freezing easily, maintain the original state of the food ingredients, and facilitate taking and using at any time.

[0066] Furthermore, to ensure that food ingredients sensitive to storage temperature can be kept fresh for a long time without damage, especially tropical or subtropical fruits and vegetables, and at the same time to avoid large fluctuations in the fresh-keeping temperature in storage space 1, the fresh-keeping temperature range in storage space 1 is preferably -3°C to -2°C.

[0067] The first storage temperature Ton is -1°C to avoid reducing the inhibitory effect on the reproduction of microorganisms when the temperature in storage space 1 is higher than -1°C. At the same time, if the food ingredients in storage space 1 are of large volume or cold-resistant storage type, the first storage temperature Ton can be -2°C.

[0068] In one embodiment, after the camera detects that there are food ingredients placed in storage space 1, it sends a food ingredient storage instruction to the processor. With such a setting, the automation degree of the cold storage device is improved, and people's usage experience is enhanced. In addition, the processor can also analyze the types of stored food ingredients through the image information fed back by the camera, and automatically adjust the storage temperature in storage space 1 according to the types of food ingredients, so as to increase the storage duration and quality of the food ingredients and improve the intelligence level of the cold storage device. To ensure the accuracy of food ingredient recognition, the camera is movably arranged in storage space 1 to facilitate collecting image information of multiple directions of the food ingredients.

[0069] In another embodiment, the cold storage device is provided with an operation panel (not shown), and the user can start and stop the temperature control program of the cold storage device through the operation panel. At the same time, different types of stored food materials can also be selected through the operation panel to manually select the fresh-keeping temperature range in the storage space 1.

[0070] In one embodiment, after the refrigeration device 7 is started, since the cold air temperature generated by the refrigeration device 7 is uncontrollable, in order to prevent the cold air that is too cold or too hot from entering the storage space 1 and damaging the food materials, the air damper 4 is in the first working position at this time, so that the cold air flows through the first air duct 2 and into the second air duct 3, avoiding excessive temperature fluctuations in the storage space 1 and damage to the food materials caused by the non-compliant cold air temperature during initial startup.

[0071] The preset inlet air temperature Ta is -8°C. With such a setting, it is ensured that the cold air flows through the first air duct 2, and after temperature loss, it still meets the optimal storage temperature range of -5°C to -1°C when entering the storage space 1.

[0072] In one embodiment, to ensure the accuracy and stability of the detection of the inlet air temperature T2 of the first air duct 2, step S3 includes: after the refrigeration device 7 operates for the first preset duration t1, the second temperature sensor 62 then detects the inlet air temperature T2 of the first air duct 2. To ensure that the cold air temperature is accurate and stable enough, the first preset duration t1 is preferably no more than five minutes.

[0073] Furthermore, if the inlet air temperature T2 of the first air duct 2 is higher than the preset inlet air temperature Ta and the operating time in this state exceeds the second preset duration t2, the processor controls the air damper 4 to be in the second working position. With such a setting, it is ensured that the cold air flows through the first air duct 2, and after temperature loss, it still meets the optimal storage temperature range of -5°C to -1°C when entering the storage space 1. In addition, to ensure the stability of the cold air temperature entering the storage space 1 and avoid excessive temperature fluctuations in the storage space 1, the operating time when the inlet air temperature T2 of the first air duct 2 is higher than the preset inlet air temperature Ta should exceed the second preset duration t2. The second preset duration t2 is not less than one minute and not more than three minutes.

[0074] In one embodiment, step S3 includes: if the inlet air temperature T2 of the first air duct 2 is less than or equal to the preset inlet air temperature Ta, the heating element 5 is started so that the outlet air temperature T3 of the first air duct 2 is within the range of -8°C to -5°C, and the air damper 4 is controlled to be in the second working position.

[0075] Specifically, after starting the heating element 5 and after a certain period of time, the processor controls the third temperature sensor 63 to detect the outlet temperature T3 of the first air duct 2. This setting ensures the stable operation of the heating element 5 and improves the accuracy of the outlet temperature T3 of the first air duct 2. If the outlet temperature T3 of the first air duct 2 is outside the range of -8°C to -5°C, the power of the heating element 5 is adjusted to change the temperature inside the first air duct 2 so that the outlet temperature T3 of the first air duct 2 is within the range of -8°C to -5°C.

[0076] In one embodiment, the heating element 5 performs each power adjustment at a constant time interval t0; and each time the power is adjusted, the power is increased or decreased by a fixed power difference ΔP. Specifically, after the heating element 5 operates for a constant time duration, if the outlet temperature T3 of the first air duct 2 still does not meet the requirements, the power of the heating element 5 is adjusted, and after a constant time interval t0, the outlet temperature T3 of the first air duct 2 is detected again, and this cycle continues until the outlet temperature T3 of the first air duct 2 is within the range of -8°C to -5°C.

[0077] The constant time interval t0 is not less than half a minute and not more than three minutes. To ensure that after each power adjustment of the heating element 5 and the power operates stably during the next temperature detection and to reduce power consumption, the constant time interval t0 is preferably fifty seconds.

[0078] The adjustment formula for the power of the heating element 5 is P1 = P + ΔP or P1 = P - ΔP, where P1 is the power value after each adjustment of the heating element 5, P is the current power value of the heating element 5, and ΔP is the fixed power difference.

[0079] The fixed power difference ΔP is 5% to 15% of the maximum power Pmax of the heating element 5. This setting avoids too large a change in the power value of the heating element 5. That is, when the fixed power difference ΔP exceeds 15% of the maximum power Pmax of the heating element 5, it will cause too large a temperature drop, affecting the cold storage and freshness preservation of the food ingredients, and it will also cause the power adjustment to easily cross the optimal adjustment value. At the same time, it also avoids too small a change in the power value of the heating element 5. That is, when it is less than 5% of the maximum power Pmax of the heating element 5, it may cause the heating element 5 to need to be adjusted multiple times, increasing power consumption and the operating burden of the processor.

[0080] To make the outlet temperature T3 of the first air duct 2 meet the requirements faster after the heating element 5 adjusts its power, the fixed power difference ΔP is preferably 10% of the maximum power Pmax of the heating element 5.

[0081] In another embodiment, the fixed power difference ΔP can also change with each power adjustment. Specifically, the fixed power difference ΔP is 5% to 15% of the current power when the heating element 5 is adjusted.

[0082] In one embodiment, if the outlet temperature T3 of the first air duct 2 is less than or equal to -8°C, the heating element 5 is controlled to increase its operating power at a fixed power difference ΔP every constant time interval t0 until the outlet temperature T3 of the first air duct 2 is within the range of -8°C to -5°C.

[0083] In addition, if the outlet temperature T3 of the first air duct 2 is greater than -5°C, the heating element 5 is controlled to decrease its operating power at a fixed power difference ΔP every constant time interval t0 until the outlet temperature T3 of the first air duct 2 is within the range of -8°C to -5°C.

[0084] In one embodiment, if the outlet temperature T3 of the first air duct 2 is within the range of -8°C to -5°C and the operating time in this state exceeds the third preset duration t3, the processor controls the heating element 5 to continue operating at the current power and controls the air damper 4 to switch from the first working position to the second working position so that the qualified cold air blows directly into the storage space 1. To ensure the continuous stability of the cold air temperature, the third preset duration t3 is not less than two minutes.

[0085] In one embodiment, step S3 includes: if the outlet temperature T3 of the first air duct 2 is less than or equal to -8°C, the air damper 4 is controlled to be in the first working position. Specifically, the third temperature sensor 63 intermittently detects the outlet temperature T3 of the first air duct 2, and after the outlet temperature T3 of the first air duct 2 is within the temperature range of -8°C to -5°C, the third temperature sensor 63 still detects the outlet temperature T3 of the first air duct 2.

[0086] Since the refrigeration device 7 cools the entire cold storage equipment and different compartments have different temperature requirements, the operating power of the refrigeration device 7 will change, which will in turn cause the cold air temperature to change. If the third temperature sensor 63 detects that the outlet temperature T3 of the first air duct 2 is less than or equal to -8°C, to prevent cold air with too low a temperature from entering the storage space 1 and causing large temperature fluctuations and damage to the food materials, the processor controls the air damper 4 to be in the first working position so that the cold air flows into the second air duct 3.

[0087] In one embodiment, the processor is used to execute step S4: if the temperature T1 in the storage space 1 is less than or equal to the second storage temperature Toff, the air damper 4 is controlled to be in the first working position, and the refrigeration device 7 and the heating element 5 are controlled to be turned off. The second storage temperature Toff is lower than the first storage temperature Ton, and the second storage temperature Toff is -5°C to prevent the food materials from being frozen when the temperature in the storage space 1 is lower than -5°C, which affects the preservation effect. At the same time, to improve the preservation effect of the food materials, the second storage temperature Toff is preferably -3°C.

[0088] The temperature control method of this application controls the start and stop of the heating element 5, power adjustment, and the movement of the air damper 4, so that the cold air temperature meets the storage temperature requirements and can be directly blown into the storage space 1 to directly cool and preserve the food materials, ensuring that the food materials quickly reach the supercooled state. At the same time, by adjusting the cold air with too low temperature to the second air duct 3, it is ensured that the cold air can continuously control the temperature of the storage space 1, ensuring that the temperature is always within a reasonable range, and the temperature fluctuation in the storage space 1 is small, better preserving the food materials and improving people's usage experience.

[0089] This application also provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned temperature control method is implemented. At the same time, the cold storage device includes a memory for storing computer instructions that can run on the processor, and the processor is used to execute the computer instructions based on the above-mentioned food material processing method.

[0090] The above are only the preferred embodiments of this application, and do not impose any form of limitation on this application. Although this application has been disclosed above in the preferred embodiments, it is not intended to limit this application. Any person skilled in the art, without departing from the technical solution of this application, can make some changes or modifications to equivalent embodiments by using the above-disclosed technical content. However, as long as the content does not depart from the technical solution of this application, any simple modification, equivalent change, and modification made to the above embodiments according to the technical essence of this application still fall within the scope of the technical solution of this application.

Claims

1. A cold storage device, characterized in that, It includes a processor, a storage space, a first air duct, a second air duct, and a damper; the processor is electrically connected to the damper, receives a food storage instruction, and controls the damper to move to a first working position or a second working position; when the damper is in the first working position, the first air duct is communicated with the second air duct; when the damper is in the second working position, the first air duct is communicated with the storage space; the first air duct is used to guide the cold air generated by the cold storage device into the storage space and the second air duct; the second air duct is used to guide the cold air to flow around the storage space.

2. The cold storage device according to claim 1, wherein The first air duct is selectively connected to the second air duct and the storage space; the second air duct is arranged around the periphery of the storage space; when the damper is in the first working position, the cold air passes through the second air duct to change the temperature in the storage space.

3. The cold storage device according to claim 1, wherein The cold storage device further includes a damper control device electrically connected to the processor; the damper control device is connected to the damper; the storage space is provided with a first air inlet, and the second air duct is provided with a second air inlet; the damper control device can drive the damper to move to block the first air inlet or the second air inlet.

4. The cold storage device according to claim 1, characterized in that, The cold storage device further includes a heating element; the heating element is arranged in the first air duct; the processor is electrically connected to the heating element to control the start and stop of the heating element.

5. The cold storage device according to claim 1, characterized in that, The cold storage device further includes a first temperature sensor, a second temperature sensor, and a third temperature sensor; the first temperature sensor is arranged in the storage space, the second temperature sensor is arranged at the air inlet of the first air duct, and the third temperature sensor is arranged at the air outlet of the first air duct; the first temperature sensor, the second temperature sensor, and the third temperature sensor are all electrically connected to the processor.

6. The cold storage device according to claim 1, characterized in that, The cold storage device further includes a refrigeration device and a receiving cavity for placing the refrigeration device; the air inlet of the first air duct is communicated with the receiving cavity; one end of the second air duct is connected to the air outlet of the first air duct, and the other end of the second air duct is communicated with the receiving cavity.

7. The cold storage device according to claim 1, wherein, The cold storage device further includes a camera; the camera is arranged in the storage space and is electrically connected to the processor; the camera is used to collect the image information of the food in the storage space and send a food storage instruction.

8. A temperature control method applied to a cold storage device, the cold storage device including a processor, a storage space, a first air duct, a second air duct, a damper, and a refrigeration device; the damper has a first working position and a second working position, wherein when the damper is in the first working position, the first air duct is communicated with the second air duct; when the damper is in the second working position, the first air duct is communicated with the storage space; characterized in that, The processor is used to execute the following steps: Step S1, receiving a food storage instruction; Step S2, judging whether the temperature T1 in the storage space is higher than the first storage temperature Ton; if so, starting the refrigeration device and controlling the damper to be in the first working position; Step S3, judging whether the temperature T2 at the air inlet of the first air duct is higher than the preset air inlet temperature Ta; If so, controlling the damper to be in the second working position; If not, adjusting the temperature in the first air duct so that the temperature T3 at the air outlet of the first air duct is within -8°C to -3°C to control the damper to be in the second working position.

9. The temperature control method according to claim 8, characterized in that, The cold storage device further includes a camera electrically connected to the processor, and the camera is used to collect the image information in the storage space and send a food storage instruction to the processor.

10. The temperature control method according to claim 8, wherein The step S3 includes: after the refrigeration device operates for a first preset duration t1, detecting the inlet temperature T2 of the first air duct; if the inlet temperature T2 of the first air duct is higher than the preset inlet temperature Ta and the operation time in this state exceeds a second preset duration t2, controlling the air door to be in the second working position.

11. The temperature control method according to claim 8, wherein The cold storage device includes a heating element; the step S3 includes: if the inlet temperature T2 of the first air duct is less than or equal to the preset inlet temperature Ta, starting the heating element so that the outlet temperature T3 of the first air duct is within -8°C to -5°C, and controlling the air door to be in the second working position.

12. The temperature control method according to claim 11, wherein After starting the heating element, if the outlet temperature T3 of the first air duct is outside -8°C to -5°C, adjusting the power of the heating element to change the temperature in the first air duct so that the outlet temperature T3 of the first air duct is within -8°C to -5°C.

13. The temperature control method according to claim 12, wherein, The heating elements perform each power adjustment at a constant time interval t0; and each time of power adjustment increases or decreases by a fixed power difference ΔP.

14. The temperature control method according to claim 13, wherein If the outlet temperature T3 of the first air duct is less than or equal to -8°C, controlling the heating element to increase the operating power by the fixed power difference ΔP every constant time interval t0 until the outlet temperature T3 of the first air duct is within -8°C to -5°C; or If the outlet temperature T3 of the first air duct is greater than -5°C, controlling the heating element to decrease the operating power by the fixed power difference ΔP every constant time interval t0 until the outlet temperature T3 of the first air duct is within -8°C to -5°C. The fixed power difference ΔP is 10% of the maximum power Pmax of the heating element.

15. The temperature control method according to claim 14, wherein If the outlet temperature T3 of the first air duct is within -8°C to -5°C and the operation time in this state exceeds a third preset duration t3, controlling the heating element to continue operating at the current power.

16. The temperature control method according to claim 15, characterized in that The step S3 includes: if the outlet temperature T3 of the first air duct is less than or equal to -8°C, controlling the air door to be in the first working position.

17. The temperature control method according to claim 16, characterized in that, The processor is further configured to execute step S4: if the temperature T1 in the storage space is less than or equal to a second storage temperature Toff, controlling the air door to be in the first working position and controlling the refrigeration device and the heating element to be turned off; the second storage temperature Toff is lower than the first storage temperature Ton.

18. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the temperature control method according to any one of claims 8 to 17.

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