Temperature control device, refrigerating box and temperature control method

Abstract

The invention relates to the technical field of refrigeration equipment, in particular to a temperature control device, a refrigerator and a temperature control method.The temperature control device comprises a refrigeration air duct assembly, an evaporator, a reference body assembly and a temperature controller, and the refrigeration air duct assembly comprises an air duct back plate and at least two fan motors arranged on the air duct back plate; the evaporator is arranged on the inner side of the refrigeration air duct assembly and can be connected with an external compressor. The reference body assembly comprises at least two reference bodies arranged at different positions, and each reference body is internally provided with a reference solution and a correction temperature sensor; the constant temperature controller is used for adjusting the rotating speed of the at least two fan motors and starting and stopping control parameters of the compressor according to the temperature information collected by the correction temperature sensor, and the temperature control device can achieve uniform distribution and accurate control over the temperature of the refrigeration space.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a temperature control device, a refrigeration box and a temperature control method. Background Art

[0002] With the improvement of modern living standards and the development of medical and scientific research technologies, the demand for precise temperature control is growing. In the medical field, biological products such as vaccines, blood products, and insulin require strict temperature control to maintain their biological activity. In scientific research, biological samples, chemical reagents, and experimental materials have extremely high storage temperature requirements. In the field of food preservation, high-end ingredients and specialty foods also require precise temperature environments to maintain optimal quality. These application scenarios place extremely high demands on the temperature control accuracy, temperature uniformity, and stability of refrigeration equipment.

[0003] Currently, refrigeration equipment on the market generally uses traditional temperature control technology. These devices typically have a temperature sensor installed within the refrigerated space. The controller uses the single-point temperature information collected by this sensor to control the start and stop of the compressor and the operation of the fan. When the detected temperature exceeds the upper set temperature limit, the compressor starts cooling; when the detected temperature falls below the lower set temperature limit, the compressor stops. Fan systems typically use a single fan or a simple multiple-fan system operating in parallel, with all fans operating at the same speed, providing only basic air circulation.

[0004] However, this traditional single-point temperature control method has a fundamental technical problem: it is impossible to achieve uniform temperature distribution and precise control of the refrigerated space. Summary of the Invention

[0005] The present application provides a temperature control device, a refrigerator, and a temperature control method. The temperature control device can achieve uniform distribution and precise control of the temperature of the refrigerated space.

[0006] In the first aspect, the present application provides a temperature control device, comprising: a refrigerated air duct assembly, comprising an air duct backplate and at least two fan motors arranged on the air duct backplate, the at least two fan motors being arranged at intervals along the air duct backplate, wherein at least one fan motor is for suction work and at least one fan motor is for air supply work; an evaporator, arranged on the inner side of the refrigerated air duct assembly; a reference body assembly, comprising at least two reference bodies arranged at different positions, each reference body being provided with a corrected temperature sensor; a controller, for adjusting the rotational speed of at least two fan motors and the start and stop control parameters of the compressor according to the temperature information collected by the corrected temperature sensor.

[0007] In one possible implementation, the refrigerated air duct assembly divides the refrigerated space into an equipment space and a refrigerated space, and at least two fan motors are a first fan motor, a second fan motor, and a third fan motor arranged at intervals from top to bottom. The first fan motor draws air from the refrigerated space to the equipment space, and the second fan motor and the third fan motor supply air from the equipment space to the refrigerated space.

[0008] In a possible implementation, the evaporator is an inflation evaporator arranged from top to bottom.

[0009] In a possible implementation, two reference bodies are provided, and the two reference bodies are respectively provided at the upper end and the lower end of the refrigeration air duct assembly.

[0010] In a possible implementation, a temperature sensor is further included to collect the ambient temperature of the refrigerated space; wherein the controller collaboratively controls the start and stop of the compressor based on temperature information from the temperature sensor and the corrected temperature sensor.

[0011] In one possible implementation, a front air outlet and a bottom air outlet are provided on the air duct back panel; and the air duct back panel includes a back panel body and a bending portion, the bending portion is provided on the top of the back panel body, and the angle between the bending portion and the back panel body is less than 180°.

[0012] In a possible implementation, it further includes a first arc-surface motor cover, a second arc-surface motor cover, and a third arc-surface motor cover, which are respectively arranged on the outside of the first fan motor, the second fan motor, and the third fan motor.

[0013] In one possible implementation, the reference body is filled with a glycerol aqueous solution.

[0014] In a second aspect, an embodiment of the present application provides a refrigerator, comprising: a refrigerator body; and the above-mentioned temperature control device, wherein the temperature control device is arranged in the refrigerator body.

[0015] In a third aspect, an embodiment of the present application provides a temperature control method, which is applied to the above-mentioned temperature control device, and includes the following steps: obtaining a preset temperature value and a reference body temperature value collected by at least two reference body correction temperature sensors at different positions; calculating a reference body correction target temperature value based on the reference body temperature value; adjusting the start and stop control parameters of the compressor based on the temperature difference between the preset temperature value and the reference body correction target temperature value; and adjusting the speed of the corresponding fan motor based on the temperature difference between the reference body temperature value at different positions and the preset temperature value.

[0016] In one possible implementation, two reference bodies are provided, a first reference body and a second reference body, wherein the first reference body is provided at the upper end of the refrigerated air duct assembly, and the second reference body is provided at the lower end of the refrigerated air duct assembly, and at least two fan motors are a first fan motor, a second fan motor and a third fan motor spaced apart from top to bottom; according to the temperature difference between the preset temperature value and the corrected target temperature value of the reference body, the start and stop control parameters of the compressor are adjusted, including: obtaining the average temperature value periodically collected by the corrected temperature sensors in the first reference body and the second reference body, averaging the average temperature values of the first reference body and the second reference body to obtain the corrected target temperature value of the reference body, when the corrected target temperature value of the reference body is greater than the preset temperature value, controlling the compressor to start; when the corrected target temperature value of the reference body is less than or equal to the preset temperature value, controlling the compressor to stop.

[0017] In one possible implementation, the rotational speed of the corresponding fan motor is adjusted according to the temperature difference between the reference body temperature value at different positions and the preset temperature value, including: calculating the first temperature difference between the first reference body temperature value and the preset temperature value, and calculating the second temperature difference between the second reference body temperature value and the preset temperature value; adjusting the rotational speed of the first fan motor according to the first temperature difference, adjusting the rotational speed of the third fan motor according to the second temperature difference, and adjusting the rotational speed of the second fan motor according to the average value of the first temperature difference and the second temperature difference.

[0018] In one possible implementation, a correspondence is set between the fan speed and the temperature difference; when the first temperature difference is calculated, the first speed corresponding to the first temperature difference is searched; when the second temperature difference is calculated, the second speed corresponding to the second temperature difference is searched; and the second speed corresponding to the average value of the first temperature difference and the second temperature difference is searched.

[0019] In one possible implementation, the temperature control device also includes a temperature sensor for collecting the ambient temperature of the refrigerated space; the temperature control method also includes: collecting the ambient temperature of the refrigerated space through the temperature sensor, and controlling the start and stop of the compressor to be coordinated and controlled based on the reference body to correct the target temperature value and the ambient temperature.

[0020] The above-mentioned technical solution provided by the embodiment of the present application has the following advantages compared with the existing technology: by setting at least two reference bodies at different positions in the refrigerated space, each reference body is equipped with a corrected temperature sensor, multi-point temperature detection is achieved, which completely changes the limitation of traditional single-point detection that cannot reflect the overall temperature distribution. Multi-point temperature detection ensures the accuracy and representativeness of temperature monitoring. The corrected temperature sensor in the reference body can truly reflect the actual temperature conditions of the stored items, avoiding control deviations caused by the difference between air temperature and item temperature.

[0021] Compared with traditional refrigeration equipment, the temperature control device of the present invention can improve the temperature control accuracy to a higher level and significantly improve the uniformity of temperature distribution. It provides a reliable storage environment for items with strict temperature requirements such as vaccines, blood products, biological samples, precision instruments, high-end food ingredients, etc., and meets the urgent demand for high-precision temperature control in modern society. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0025] Figure 1 A schematic diagram of the structure of a temperature control device provided in an embodiment of the present application from a front view within a refrigerated box;

[0026] Figure 2 This is a schematic structural diagram of a temperature control device provided in an embodiment of the present application from a rear perspective within a refrigerated container;

[0027] Figure 3 A schematic diagram of the planar structure of a cold air duct assembly provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the planar structure of an air duct back plate provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of the structure of a side view of an air duct back plate provided in an embodiment of the present application;

[0030] Figure 6 A schematic diagram of the planar structure of a curved motor cover provided in an embodiment of the present application;

[0031] Figure 7 A schematic diagram of the structure of a curved motor cover from a side view provided in an embodiment of the present application;

[0032] Figure 8A schematic structural diagram of a reference body assembly provided in an embodiment of the present application;

[0033] Figure 9 A flow chart of a temperature control method provided in an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 1. Refrigeration duct assembly; 11. Air duct back panel; 111. Front air outlet; 112. Bottom air outlet; 12. Fan motor; 121. First fan motor; 122. Second fan motor; 123. Third fan motor; 13. Arc-surface motor cover; 131. Support structure; 132. Hollow structure; 133. Arc-surface structure; 134. Windshield structure;

[0036] 2. Evaporator;

[0037] 3. Reference body assembly; 31. Correction temperature sensor;

[0038] 4. Equipment space; 5. Refrigerated space; 6. Temperature sensor; 7. Refrigerated box. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] The disclosure below provides many different embodiments or examples for implementing different configurations of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0041] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," "front," "back," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or a change in motion, then these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will subsequently be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0042] like Figures 1-8 As shown, an embodiment of the present application provides a temperature control device, comprising: a refrigeration duct assembly 1, an evaporator 2, a reference body assembly 3 and a controller, wherein:

[0043] The refrigeration duct assembly 1 includes a duct back plate 11 and at least two fan motors 12 arranged on the duct back plate 11. The at least two fan motors 12 are arranged at intervals along the duct back plate 11, wherein at least one fan motor 12 is for suction work and at least one fan motor 12 is for air delivery work.

[0044] The evaporator 2 is disposed inside the refrigeration duct assembly 1. Specifically, the evaporator 2 is disposed on the side of the refrigeration duct assembly 1 away from the refrigerated space to provide cooling. In certain applications, the evaporator is provided with a connector that can be connected to an external compressor.

[0045] The reference body assembly 3 includes at least two reference bodies positioned at different locations, each containing a reference solution and a correction temperature sensor 31. In this embodiment, the reference solution can be selected based on the refrigerated sample, such as water, glycerin, or alcohol. In another embodiment, the reference solution can be fixed in glycerin.

[0046] The temperature controller is used to adjust the speed of at least two fan motors 12 and the on / off control parameters of the compressor based on the temperature information collected by the correction temperature sensor 31. In a specific application, the input end of the thermostat controller is connected to the correction temperature sensor, and the output end of the thermostat controller is respectively connected to the control ends of the compressor and the at least two fan motors.

[0047] In the present invention, at least two reference bodies are provided at different locations within the refrigerated space, each of which is equipped with a corrected temperature sensor 31. Since the reference solution within the reference body can better reflect the refrigerated temperature, multi-point temperature detection can be achieved, overcoming the limitation of traditional single-point detection that cannot reflect the overall temperature distribution. Multi-point temperature detection ensures the accuracy and representativeness of temperature monitoring. The corrected temperature sensor 31 within the reference body can truly reflect the actual temperature of the stored items, avoiding control deviations caused by the difference between the air temperature and the item temperature. At the same time, at least two fan motors 12 are arranged at intervals along the duct back plate 11, using a combined suction and air supply mode of operation, and with the evaporator 2 arranged inside the refrigerated duct assembly 1, a three-dimensional air circulation system is established. This three-dimensional air circulation system, through the combined suction and air supply fan configuration, promotes sufficient mixing of air and heat exchange within the refrigerated space, achieves a uniform temperature distribution, and effectively eliminates temperature blind spots and upper and lower temperature differences within the refrigerated space. Based on multi-point temperature information, the temperature controller adjusts the speed of each fan motor 12 individually to achieve precise regional control. It also adjusts the compressor's on / off control parameters to control overall cooling capacity, creating a coordinated mechanism for cooling capacity supply and airflow distribution. This precise regional control strategy makes targeted adjustments based on temperature differences at different locations, ensuring both accurate control of the overall temperature level and precise regulation of local temperatures, significantly improving temperature control accuracy, response speed, and stability.

[0048] In summary, the temperature control device of the present invention forms a complete set of precise temperature control systems through the organic combination of the refrigeration duct component 1, the evaporator 2, the reference body component 3 and the controller, which fundamentally solves the technical problem that traditional refrigeration equipment cannot achieve uniform distribution and precise control of the temperature in the refrigerated space.

[0049] Specifically, at least two fan motors 12 are arranged at intervals along the air duct back plate 11 to form a multi-level airflow organization system. At least one fan motor 12 is responsible for sucking air from the refrigerated space into the air duct system for suction work, and at least one fan motor 12 is responsible for sending air cooled by the evaporator 2 back to the refrigerated space for delivery. This combined suction and delivery working mode ensures effective circulation and heat exchange of air. The evaporator 2 is arranged on the inner side (equipment side) of the refrigerated air duct assembly 1, so that the inhaled air can fully exchange heat with the evaporator 2 to achieve efficient refrigeration. At least two reference bodies in the reference body assembly 3 are arranged at different positions, which can reflect the temperature conditions of different areas of the refrigerated space. The corrected temperature sensor 31 in each reference body collects the temperature information of the area in real time. After receiving this temperature information, the controller analyzes the temperature differences in each area through an algorithm, and adjusts the speed of at least two fan motors 12 accordingly to improve the airflow distribution. At the same time, it adjusts the start and stop control parameters of the compressor to control the overall cooling capacity, thereby achieving precise temperature control.

[0050] In a specific embodiment, when the cold storage space is used to store items with extremely strict temperature requirements, such as vaccines, traditional single-point temperature control often leads to uneven temperature distribution in the storage space, and some areas may exceed the safe temperature range for vaccine storage. However, by adopting the temperature control device of the present invention, by setting reference bodies at different positions in the cold storage space, it is possible to monitor the temperature changes of each area in real time. When it is detected that the temperature of a certain area deviates from the set value, the controller immediately adjusts the speed of the fan motor 12 in the corresponding area, enhances the airflow circulation in the area, and quickly corrects the temperature deviation. At the same time, the working state of the compressor is adjusted according to the overall temperature trend to ensure that the vaccine storage environment always remains within a strict temperature range, greatly improving the safety and effectiveness of vaccine storage.

[0051] In the related art, traditional refrigeration equipment typically uses a single temperature sensor 6 for temperature detection. The controller controls the start and stop of the compressor and the operation of the fan based on the temperature information at this single point. This control method has obvious limitations: First, single-point temperature detection cannot reflect the temperature distribution within the refrigerated space. It is possible that the temperature at the detection point is normal but the temperature in other areas is abnormal. Second, traditional fan configurations are usually single air supply or simple circulation, which cannot be adjusted according to the temperature requirements of different areas. Third, the control of the compressor is based only on information from a single temperature point, lacking comprehensive consideration of the overall temperature conditions, resulting in frequent starts and stops or delayed response.

[0052] In the embodiment of the present invention, the suction and air supply of at least two fan motors 12 work together to achieve a three-dimensional airflow organization, ensuring sufficient circulation and mixing of the air in the refrigerated space and eliminating temperature blind spots. The multi-point temperature detection of the reference body assembly 3 provides the controller with comprehensive temperature information, so that the control strategy can be optimized based on the overall temperature distribution. Based on the temperature information collected by the corrected temperature sensor 31, the controller can not only accurately adjust the speed of at least two fan motors 12 to achieve regional airflow control, but also optimize the start and stop control parameters of the compressor, avoiding the temperature fluctuations and energy waste problems in traditional control methods. This multi-point monitoring and regional control technical solution significantly improves the accuracy and stability of temperature control, and provides a reliable technical guarantee for application scenarios with strict temperature requirements.

[0053] Although the above technical solution provides a basic configuration of at least two fan motors 12, it lacks clear regulations on the specific airflow organization method and spatial layout, which may lead to the fan motor 12 working mode being not coordinated enough and the airflow path being not clear enough, thereby affecting the temperature control effect.

[0054] In an embodiment of the present application, the temperature control device can be installed in a cold storage box, and the refrigerated air duct assembly 1 divides the cold storage box into an equipment space 4 and a cold storage space 5, wherein the side located in the equipment space is the equipment side, and the side located in the cold storage space is the cold storage space side, and at least two fan motors 12 are a first fan motor 121, a second fan motor 122 and a third fan motor 123 arranged at intervals from top to bottom, the first fan motor 121 draws air from the cold storage space 5 to the equipment space 4, and the second fan motor 122 and the third fan motor 123 supply air from the equipment space 4 to the cold storage space 5.

[0055] In the present invention, the refrigerated space is divided into an equipment space 4 and a cold storage space 5 by a refrigerated air duct assembly 1. At least two fan motors 12 are spaced apart from each other from top to bottom: a first fan motor 121, a second fan motor 122, and a third fan motor 123. The first fan motor 121 draws air from the cold storage space 5 into the equipment space 4, while the second and third fan motors 122, 123 deliver air from the equipment space 4 to the cold storage space 5, achieving a scientific and rational airflow organization and circulation path. This technical solution of separating the inner cold storage space 5 and coordinating the three fans creates an orderly airflow circulation system, significantly improving the temperature uniformity of the cold storage space and eliminating the airflow dead spots and temperature gradients that are common in traditional single-fan or dual-fan configurations.

[0056] In a specific embodiment, when the refrigerated space is used to store fresh food, the temperature difference at different locations directly affects the preservation effect and shelf life of the food. By adopting the technical solution of the internal refrigerated space 5 separation and the coordinated operation of three fans of the present invention, the first fan motor 121 draws air from the refrigerated space 5, ensuring the orderly entry of the airflow and avoiding turbulence and airflow conflicts. The second fan motor 122 and the third fan motor 123 respectively supply air to the refrigerated space 5 from different heights, so that the cooling air can enter the refrigerated space 5 in layers, and both the upper and lower layers can obtain sufficient cooling airflow. This three-dimensional airflow organization eliminates the problem of upper heat and lower cold or local overcooling in the traditional single-fan configuration, so that fresh food stored in different locations can obtain a consistent fresh-keeping environment, extend the shelf life of the food, and reduce food loss caused by uneven temperature.

[0057] Furthermore, in the embodiment of the present invention, by clearly defining the refrigerated air duct assembly 1 to divide the refrigerated space into the equipment space 4 and the refrigerated space 5, and by detailing the specific operating methods and airflow directions of the first fan motor 121, the second fan motor 122, and the third fan motor 123, a scientific airflow organization system is formed. The design of the first fan motor 121 drawing air from the refrigerated space 5 to the equipment space 4 ensures the uniformity and orderliness of the airflow inlet; the configuration of the second fan motor 122 and the third fan motor 123 supplying air from the equipment space 4 to the refrigerated space 5 achieves multi-point air supply and three-dimensional airflow distribution. This spatial separation of the inner refrigerated space 5, combined with the coordinated operation of the three fans, not only improves the efficiency of airflow circulation, but also ensures the uniformity of temperature distribution, providing a reliable hardware foundation for achieving precise temperature control.

[0058] Although the above technical solution establishes an effective air circulation system, it does not clearly stipulate the specific type and layout of the evaporator 2. A traditional fin-type evaporator 2 or a simple coil-type evaporator 2 may be used. These evaporators 2 have limited heat exchange areas, low heat transfer efficiency, and are prone to frost on the surface, which affects the heat transfer effect, resulting in reduced refrigeration efficiency and insufficient temperature control accuracy.

[0059] In some embodiments, the evaporator 2 is an inflation evaporator 2 arranged from top to bottom.

[0060] In the present invention, the evaporator 2 is configured as a blown evaporator 2, arranged from top to bottom, achieving efficient heat exchange and rapid temperature response. The blown evaporator 2 has a larger heat exchange area and better heat transfer characteristics. Its top-to-bottom arrangement matches the airflow organization of the refrigerated air duct assembly 1, ensuring sufficient contact between the airflow and the evaporator 2, improving cooling efficiency and temperature control response speed. This evaporator 2 configuration fully utilizes the effects of gravity and convection, allowing the cooled air to naturally sink and be evenly distributed, further optimizing the temperature distribution in the refrigerated space.

[0061] Specifically, the inflation evaporator 2 adopts a special manufacturing process. By inflating the refrigerant pipeline to form a larger heat exchange area, it has a higher heat transfer coefficient and better heat transfer effect than the traditional fin-type evaporator 2 or coil-type evaporator 2. The top-down layout enables the evaporator 2 to cover the entire height range of the refrigerated air duct. When the first fan motor 121 draws air from the refrigerated space 5, the air passes through different parts of the evaporator 2 from top to bottom, realizing layered heat exchange. The air in the upper part is first cooled, and the density increases and begins to sink, forming natural convection with the warm air rising from the lower part. This convection action, combined with forced circulation, enhances the heat transfer effect. The low thermal inertia characteristics of the inflation evaporator 2 enable it to respond quickly to changes in the refrigerant flow rate. When the compressor starts or stops, the cooling capacity of the evaporator 2 can be adjusted quickly to avoid large temperature fluctuations.

[0062] In a specific embodiment, when the temperature control device is used for cold chain storage of medicines, rapid response and stable control of temperature are crucial. The configuration of the inflation evaporator 2 arranged from top to bottom shows excellent performance when opening the door to take out items: when the refrigerator door is opened, the outside warm air enters from the top. The equipment configured with the traditional evaporator 2 often takes a long time to restore the temperature to the set value. The inflation evaporator 2 can quickly cool the incoming hot air due to its efficient heat transfer characteristics and top-down layout. The upper part of the evaporator 2 starts working immediately, quickly reducing the temperature of the hot air. The cooled air sinks to form a cold curtain effect, effectively preventing more hot air from entering. This rapid response capability ensures the temperature stability of the medicine storage environment and avoids the impact of frequent temperature fluctuations on the quality of medicines.

[0063] In the embodiment of the present invention, the top-down arrangement of the inflation evaporator 2 fully leverages its advantages: large heat exchange area, high heat transfer coefficient, and strong frost resistance. This top-down arrangement perfectly matches the multi-fan airflow organization system, achieving optimal contact between the airflow and the evaporator 2. The smooth surface of the inflation evaporator 2 reduces the possibility of frost formation and maintains good heat transfer even in high humidity environments. This evaporator 2 configuration not only improves cooling efficiency but also enhances system stability and reliability, providing strong hardware support for the high-precision temperature control of the temperature control device.

[0064] In some embodiments, two reference bodies are provided, and the two reference bodies are respectively provided at the upper end and the lower end of the refrigeration air duct assembly 1 .

[0065] In an embodiment of the present application, the reference body assembly is a box body and a box cover with a storage space provided inside; a liquid injection port is provided on the box body, and the box cover is movably connected to the liquid injection port, and the liquid injection port can be sealed or opened; in each reference body assembly, the reference solution is located in the storage space inside the box body, and the corrected temperature sensor is located below the liquid surface of the reference solution.

[0066] In this invention, two reference bodies are provided, one at the upper and one at the lower end of the refrigerated air duct assembly 1, to achieve precise temperature monitoring of the upper and lower key areas of the refrigerated space. This dual reference body configuration fully accounts for the temperature gradient phenomenon caused by gravity and airflow distribution within the refrigerated space, providing the controller with a data foundation that accurately reflects the actual temperature distribution. This allows the temperature control strategy to be precisely adjusted based on the actual temperature differences in the space, significantly improving the accuracy and reliability of overall temperature control.

[0067] Specifically, two reference bodies are positioned at the upper and lower ends of the refrigerated air duct assembly 1. The upper reference body monitors the temperature in the upper region of the refrigerated space, where hot air typically accumulates and is first affected by external heat. The lower reference body monitors the temperature in the lower region of the refrigerated space, where cold air typically settles and the cooling effect of the evaporator 2 is most directly reflected. A corrected temperature sensor 31 within each reference body continuously collects temperature data at that location, reflecting the actual temperature conditions in that area. By analyzing the temperature difference between the upper and lower reference bodies, the controller accurately determines the temperature distribution within the refrigerated space. When the upper temperature is higher than the lower temperature, it indicates a significant temperature gradient and requires increased airflow circulation. When the temperatures at both ends are close, the temperature distribution is relatively uniform. Based on this dual-point temperature information, the controller can implement a more precise control strategy, ensuring both the accuracy of the overall temperature level and the uniformity of the temperature distribution.

[0068] In a specific embodiment, when the temperature control device is applied to the storage of blood products, blood products are extremely sensitive to temperature. Not only does it require precise temperature control within a specified range, but it also requires uniform temperature distribution throughout the storage space to prevent local temperature anomalies from causing quality degradation of the blood products. By adopting a configuration with two reference bodies distributed above and below, the upper reference body can promptly detect temperature increases in the upper area due to factors such as door opening and ambient temperature changes. Upon receiving this information, the controller immediately adjusts the speed of the first fan motor 121, enhancing air circulation in the upper area and rapidly drawing warm air into the duct system for cooling. The lower reference body monitors the cooling effect and the lower temperature. If the lower temperature is detected to be too low, the controller appropriately reduces the speed of the second and third fan motors 12 or adjusts the operating parameters of the compressor to avoid over-cooling. This precise control based on dual-point temperature information ensures temperature stability and uniformity in the blood product storage environment, providing reliable protection for the quality and safety of blood products.

[0069] Moreover, in the embodiment of the present invention, it is clearly stipulated that two reference bodies are respectively set at the upper end and the lower end of the refrigerated air duct assembly 1. This layout is based on the physical laws and actual needs of the temperature distribution in the refrigerated space. The upper end and the lower end are the two positions where the temperature difference in the refrigerated space is most obvious. By setting reference bodies at these two key positions, the changing trends and abnormal conditions of the temperature distribution can be captured most effectively. The upper end reference body serves as an early warning point for temperature rise, and the lower end reference body serves as a direct monitoring point for the refrigeration effect. The cooperation of the two provides the controller with comprehensive and accurate temperature information. This carefully designed dual reference body layout not only improves the representativeness and accuracy of temperature monitoring, but also lays a solid technical foundation for achieving precise control in different areas, ensuring that the temperature control device can achieve excellent temperature control performance in various application scenarios.

[0070] In some embodiments, the air duct back plate 11 is a metal air duct back plate 11 .

[0071] In the present invention, the metal duct backplate 11 achieves excellent thermal conductivity, structural strength, and corrosion resistance. The metal duct backplate 11 not only provides a sturdy and reliable mounting base for the at least two fan motors 12, but also participates in the heat exchange process through its excellent thermal conductivity, facilitating rapid temperature transfer and uniform temperature distribution. The high strength of the metal material ensures the structural stability of the duct system during long-term operation, avoiding airflow disturbances and poor sealing caused by deformation or loosening, providing a key guarantee for the long-term reliable operation of the temperature control device.

[0072] Specifically, the metal duct back plate 11 is made of metal materials with good thermal conductivity, such as aluminum alloy or stainless steel. These materials have a thermal conductivity coefficient much higher than that of plastic materials and can quickly conduct temperature changes. When the evaporator 2 is cooling, the metal duct back plate 11 can quickly conduct cold air, so that the temperature of the entire duct system drops rapidly, improving the response speed of the system. At the same time, the metal duct back plate 11 has a moderate thermal capacity, which can not only store a certain amount of cold air to stabilize the temperature, but also will not affect the sensitivity of temperature regulation due to excessive thermal inertia. The high strength characteristics of the metal material enable the duct back plate 11 to withstand the vibration and stress generated by the operation of at least two fan motors 12, maintaining the stability and sealing of the structure. The metal surface also has good corrosion resistance and easy-to-clean properties, and can resist the erosion of moisture and various chemicals that may exist in the refrigerated environment, ensuring the long-term durability and sanitary safety of the duct system.

[0073] In a specific embodiment, when the temperature control device is used to store medical equipment or experimental samples, these items usually have extremely high requirements for the stability and cleanliness of the storage environment. The metal duct backplate 11 shows outstanding advantages in this application: First, the thermal conductivity of the metal material enables the temperature change to be quickly transmitted to the entire duct system. When the external ambient temperature changes or the device door is opened, the metal duct backplate 11 can respond quickly and participate in the temperature adjustment process, cooperating with the evaporator 2 and the fan system to quickly restore the set temperature. Secondly, the high strength of the metal duct backplate 11 ensures the stable installation of the fan motor 12, avoids noise and airflow disturbances caused by vibration, and provides quiet and stable storage conditions for the medical environment. Thirdly, the corrosion resistance and easy-to-clean properties of the metal surface facilitate regular disinfection and cleaning maintenance, meeting the hygiene requirements for the storage of medical equipment. Finally, the long-term stability of the metal material ensures that the duct system maintains good sealing and airflow organization effects during frequent use, providing a basic guarantee for the reliable operation of the temperature control device.

[0074] Although the technical solution establishes a complete airflow circulation and temperature control system, if the air duct back plate 11 is made of non-metallic materials such as plastic, there will be problems such as poor thermal conductivity, insufficient strength, easy aging and deformation, which will affect the performance and reliability of the entire system.

[0075] In the embodiment of the present invention, the technical solution of using the metal air duct back plate 11 fully utilizes the advantageous properties of metal materials. The high thermal conductivity of the metal air duct back plate 11 makes it an important component of the heat exchange system. It not only supports the normal operation of the fan motor 12, but also actively participates in the temperature regulation process, thereby improving the overall thermal response performance of the system. The high strength and durability of metal materials ensure the long-term stable operation of the air duct system and avoid the problem of performance degradation caused by material fatigue or aging. The corrosion resistance and easy maintenance characteristics of the metal air duct back plate 11 reduce the maintenance cost of the system and extend the service life of the equipment. The perfect combination of this material selection and system design provides a solid hardware foundation for the temperature control device, ensuring its reliability and durability in various harsh environments.

[0076] In some embodiments, a temperature sensor 6 is further included for collecting the ambient temperature of the refrigerated space; wherein the controller collaboratively controls the start and stop of the compressor based on the temperature information of the temperature sensor 6 and the corrected temperature sensor 31.

[0077] In the present invention, by also including a temperature sensor 6 for collecting the ambient temperature of the refrigerated space, the controller collaboratively controls the start and stop of the compressor based on the temperature information from temperature sensor 6 and the corrected temperature sensor 31, thereby implementing a dual temperature monitoring and collaborative control system based on both ambient and reference body temperatures. This dual-sensor collaborative control solution not only improves the accuracy and stability of temperature control but also enhances the system's adaptability to environmental changes, avoiding control deviations and system instability that can result from single temperature detection, thereby providing a more intelligent and reliable control strategy for the temperature control device.

[0078] Specifically, the temperature sensor 6 is set in the refrigerated space to collect the ambient temperature in real time, which reflects the overall temperature level of the air in the refrigerated space; the correction temperature sensor 31 is set in the reference body, and the collected temperature can better represent the actual temperature condition of the stored items. The controller receives two types of temperature information at the same time, analyzes the differences and change trends between the ambient temperature and the reference body temperature through an algorithm, and formulates a more accurate compressor control strategy. When the ambient temperature rises rapidly (such as when opening a door), the controller can respond quickly, start the compressor in advance, or extend the running time of the compressor; when the reference body temperature shows that the temperature of the stored items is stable, even if the ambient temperature fluctuates slightly, the controller will not over-adjust the working state of the compressor, thereby avoiding unnecessary energy consumption and temperature fluctuations. This collaborative control strategy comprehensively considers the immediacy of environmental changes and the lag of the temperature of stored items, achieving a balance between rapid response and stable control.

[0079] In a specific embodiment, when the temperature control device is used in a large-capacity refrigerator in a vaccine storage center, the temperature stability of the vaccine is directly related to its effectiveness and safety. During actual use, staff need to frequently open the door to access vaccines, and each door opening causes rapid changes in the ambient temperature. Using a dual-sensor collaborative control technology solution, the ambient temperature sensor 6 can immediately detect the temperature rise caused by opening the door. Upon receiving this information, the controller quickly activates the compressor to increase the cooling capacity, while adjusting the fan speed to enhance air circulation and rapidly reduce the ambient temperature. At the same time, the corrected temperature sensor 31 within the reference body monitors the actual temperature changes of the vaccine. Due to the thermal inertia of the reference body, the vaccine temperature changes relatively slowly. By comparing the two temperature data, the controller can accurately determine the degree and trend of temperature changes, avoiding excessive cooling that may cause vaccine freezing. When the door is closed, the ambient temperature gradually recovers. If the reference body temperature remains stable, the controller will adjust the operating state of the compressor in a timely manner to avoid unnecessary operation, thus ensuring the temperature safety of the vaccine and achieving energy-saving operation.

[0080] In the related art, although the previous technical solution establishes a control system based on the temperature of a reference body, there may be a response lag problem when relying solely on the temperature of the reference body for control. Especially when the ambient temperature changes sharply, the temperature of the reference body changes relatively slowly due to its thermal inertia, which may cause the control system to respond untimely and affect the temperature control effect.

[0081] In the embodiment of the present invention, by adding an ambient temperature sensor 6 and realizing coordinated control with the correction temperature sensor 31, the limitation problem of single temperature detection is perfectly solved. The ambient temperature sensor 6 provides a fast response capability, which can detect environmental changes in a timely manner and trigger corresponding control actions; the correction temperature sensor 31 provides accurate target monitoring to ensure that the ultimate goal of control is the actual temperature of the stored items. The collaborative work of the two realizes an organic combination of fast response and precise control, which not only avoids the problem of temperature exceeding the limit caused by response lag, but also prevents temperature fluctuations and energy waste caused by excessive response. This technical solution of dual-sensor coordinated control greatly improves the intelligence level and control performance of the temperature control device, and provides a more reliable and efficient temperature control solution for various application scenarios with strict temperature requirements.

[0082] In some embodiments, the metal air duct back plate 11 is provided with a front air outlet 111 and a bottom air outlet 112 .

[0083] In the present invention, a front air outlet 111 and a bottom air outlet 112 are provided on the metal air duct back plate 11. The front air outlet 111 is a vertical air outlet located on both sides, thereby realizing a multi-directional, three-dimensional air supply system. This multi-air outlet design fully utilizes the structural advantages of the metal air duct back plate 11. By configuring the air outlets in different positions and directions, it ensures that the cooling air can cover every corner of the refrigerated space, eliminating temperature blind spots and achieving a truly uniform temperature distribution. The coordinated operation of multiple air outlets can also optimize the air flow trajectory according to the principles of airflow dynamics, improve heat exchange efficiency, and provide strong hardware support for the high-precision temperature control of the temperature control device.

[0084] Specifically, the front air outlet 111 is set at the front position of the metal air duct back plate 11, and the vertical air outlets on both sides are vertically distributed along the side of the air duct back plate 11 to form lateral airflows. These airflows intersect with the front airflow and the bottom airflow to form a three-dimensional airflow network in the refrigerated space. The airflow speed and direction of different air outlets have been carefully designed to avoid mutual interference and disorder between the airflows, and instead form an orderly circulation system to ensure sufficient mixing of the air and uniform transfer of heat. The bottom air outlet 112 is set at the lower part of the air duct back plate 11, and utilizes the natural sinking characteristics of cold air to form a cold air layer at the bottom. This part of cold air not only directly cools the items stored at the bottom, but also gradually rises to form convection, promoting air circulation in the entire space.

[0085] In a specific embodiment, when the temperature control device is used in a multi-layer medicine storage cabinet, medicines at different levels and locations need to obtain a consistent temperature environment. A multi-outlet three-dimensional air supply design is adopted. The front air outlet 111 directly supplies cooling air to each layer of medicine, ensuring that each layer of medicine can obtain sufficient cooling; the bottom air outlet 112 forms a cold air buffer layer at the bottom of the cabinet to prevent the bottom medicine from overheating. At the same time, the upward movement of this part of cold air drives the overall air circulation; the vertical air outlets on both sides form lateral airflow to ensure that the medicines close to the side walls can also obtain a good temperature environment, avoiding the problem of high temperature in the side wall area in the traditional single air supply method. When the staff opens the door to take medicine, the multi-directional airflow system can quickly replenish cold air. Through the mutual cooperation of airflow in different directions, the temperature in the cabinet is quickly restored, minimizing the impact of opening the door on the medicine storage environment. This three-dimensional air supply system ensures the safety and effectiveness of medicine storage and provides medical institutions with reliable medicine storage conditions.

[0086] Moreover, in the embodiment of the present invention, by carefully arranging the front air outlet 111 and the bottom air outlet 112 on the metal air duct back plate 11, the optimization and upgrading of the air flow organization is achieved. The bottom air outlet 112 uses natural convection to enhance air circulation, and the vertical air outlets on both sides eliminate the dead corners of the side walls. The coordinated work of the two air outlets forms a complete three-dimensional air supply network. This multi-air outlet design not only improves the coverage and uniformity of the air supply, but also reduces the workload of the fan through reasonable air flow organization, thereby improving the overall efficiency of the system. The high strength characteristics of the metal air duct back plate 11 provide structural guarantees for the opening of multiple air outlets, ensuring the sealing and stability of the air duct system. The perfect combination of this hardware configuration and the control system creates ideal conditions for the temperature control device to achieve extremely high temperature control accuracy and stability.

[0087] In some embodiments, the angle between the upper portion and the back of the air duct back plate 11 is less than 180°. Specifically, the back of the air duct back plate 11 is the side facing the equipment space, so that the upper portion of the air duct back plate is inclined toward the refrigerated space.

[0088] In this invention, by setting the angle between the upper portion and the back of the duct backplate 11 to less than 180°, airflow guidance is optimized and flow resistance is reduced. This tilted angle design fully considers the physical characteristics of gas flow and the overall layout of the duct system, allowing air drawn in from the first fan motor 121 to enter the duct system more smoothly. This reduces turbulence and pressure loss during the diversion process, improving fan efficiency and the performance of the entire air circulation system. The tilted design also facilitates the natural drainage of condensed water, preventing water accumulation from impacting system performance.

[0089] Specifically, the air duct back panel 11 includes a back panel body and a bent portion, wherein the bent portion is arranged at the top of the back panel body and is aligned with the back panel body. The back panel body is the lower part and the bent portion is the upper part. In the embodiment of the present application, the angle between the bent portion and the back panel body is less than 180°, forming an inwardly inclined guide surface. When the first fan motor 121 draws air from the refrigerated space 5 to the equipment space 4, the airflow can change direction more smoothly along this inclined surface, avoiding the airflow separation and vortex phenomenon that may be caused by right-angle turns. This design reduces the resistance coefficient of the airflow, allowing the first fan motor 121 to obtain a larger air volume with less power consumption, thereby improving the energy efficiency of the system. The setting of the tilt angle also takes into account acoustic characteristics, reducing the noise generated by airflow impact and turbulence, creating conditions for quiet operation of the equipment. During the refrigeration process, condensed water that may be generated due to temperature differences can naturally flow to the drainage point along the inclined surface, avoiding the problem of water accumulation affecting the heat transfer effect or causing bacterial growth. The optimization of this geometric design reflects the in-depth application of fluid mechanics principles and provides important structural support for the efficient operation of the duct system.

[0090] In a specific embodiment, when the temperature control device is used in a commercial refrigerated display cabinet that is used frequently, the equipment needs to run continuously for a long time, and the efficiency and noise level of the fan system directly affect the user experience and operating costs. By adopting a design in which the angle between the upper part of the air duct back plate 11 and the back is less than 180°, the airflow can maintain a laminar state when entering the air duct system, reducing the energy loss caused by turbulence. The workload of the first fan motor 121 is significantly reduced, which not only extends the service life of the motor, but also reduces the operating noise, providing quieter working conditions for commercial environments. In a high humidity environment, the inclined design effectively prevents the accumulation of condensed water, avoiding the problem of water droplets affecting the airflow or dripping onto stored items. When equipment maintenance is required, the inclined surface design facilitates cleaning and inspection, reducing the difficulty and cost of maintenance. This optimized structural design improves the practicality and economy of the equipment while ensuring performance.

[0091] Although the above scheme establishes an air circulation system with three fans working together, if the air duct back plate 11 adopts the traditional right-angle design, it will produce greater flow resistance and pressure loss at the air flow turning point, affecting the suction effect of the first fan motor 121, and thus affecting the performance of the entire air circulation system.

[0092] In the embodiment of the present invention, the angle between the upper part of the air duct back plate 11 and the back is less than 180°, which achieves fluid mechanics optimization of the airflow guidance. This tilt angle design is based on the basic principle of gas flow, which makes the turning process of the airflow smoother and smoother, and significantly reduces the flow resistance and pressure loss. The optimized airflow path not only improves the working efficiency of the first fan motor 121, but also improves the airflow quality of the entire air duct system, and reduces the generation of turbulence and noise. The combination of this structural optimization and the three-fan collaborative working system further improves the efficiency and stability of the airflow circulation, creating more ideal hardware conditions for achieving high-precision temperature control. The tilted design also brings convenience in maintenance and use, reflecting the comprehensive consideration and optimization of engineering design.

[0093] In some embodiments, the first arc surface motor cover 13 , the second arc surface motor cover 13 and the third arc surface motor cover 13 are further included, which are respectively arranged on the outside of the first fan motor 121 , the second fan motor 122 and the third fan motor 123 .

[0094] In the present invention, by also including a first curved motor cover 13, a second curved motor cover 13, and a third curved motor cover 13, which are respectively arranged on the outside of the first fan motor 121, the second fan motor 122, and the third fan motor 123, effective protection of the fan motor 12 and further optimization of the airflow are achieved. The special geometric shape of the curved motor cover 13 can improve the flow characteristics of the airflow, reduce airflow turbulence and noise, and at the same time provide physical protection for the fan motor 12 to prevent damage to the motor by external substances. The coordinated design of the three motor covers ensures the consistency and stability of the airflow organization of the entire air duct system, providing an important guarantee for the reliable operation and excellent performance of the temperature control device.

[0095] Specifically, the first, second, and third curved motor covers 13, 13, utilize a streamlined curved design. This geometric shape conforms to aerodynamic principles, guiding airflow smoothly around the fan blades and reducing airflow separation and vortex generation. When the first fan motor 121 is operating in suction mode, the first curved motor cover 13 helps airflow enter the fan evenly from all directions, avoiding efficiency losses caused by localized excessive or insufficient airflow. When the second and third fan motors 122, 123 are operating in delivery mode, the corresponding curved motor covers 13 help airflow smoothly diffuse from the fan outlet, reducing pressure loss and noise generation at the outlet. The curved motor cover 13 also plays an important protective role, preventing moisture, dust, or other particulate matter from the refrigerated space from entering the motor interior, protecting key components such as the motor windings and bearings, and extending the motor's service life. The material selection and surface treatment of the motor cover take into account corrosion resistance and easy-to-clean requirements, ensuring long-term stability and hygienic safety in refrigerated environments. The arc motor cover 13 includes a supporting main structure 131, a hollow structure 132 arranged on the supporting main structure 131, a curved surface structure 133 and a wind-shielding structure 134 perpendicular to the curved surface structure 133. The three arc motor covers 13 are fixed on the air duct back plate 11; the corresponding hollow structures 132 are respectively the air outlet and the return air outlet. The arc fan cover avoids the problem of low temperature on the front side of the wind.

[0096] In a specific embodiment, when the temperature control device is used in a clean environment for storing precision instruments, extremely high requirements are placed on the noise level, cleanliness, and reliability of the equipment. The design of the three curved motor covers 13 plays an important role in this application: first, the curved design significantly reduces the airflow noise during fan operation, and by reducing turbulence and airflow impact, the device can operate normally near noise-sensitive precision instruments; second, the sealing protection function of the motor cover prevents external contaminants from invading the fan motor 12, ensuring the cleanliness requirements of the equipment in a clean environment; third, the motor cover reduces the safety hazards caused by the direct exposure of the fan blades, improving the overall safety of the equipment; finally, the optimized design of the curved motor cover 13 improves the working efficiency of each fan, thereby improving the suction capacity of the first fan motor 121 and the air delivery capacity of the second and third fan motors 12, and the performance of the entire air circulation system is more excellent, providing a more stable and accurate temperature environment for precision instruments.

[0097] Moreover, in the embodiment of the present invention, by equipping the three fan motors 12 with specially designed curved motor covers 13, dual optimization of performance and protection is achieved. The streamlined design of the curved motor cover 13 fully considers the physical characteristics of gas flow, which not only improves the working efficiency of the fan, but also improves the quality of the airflow and reduces system noise. The consistent design of the three motor covers ensures the coordination and unity of the airflow characteristics of the entire air duct system, and avoids system instability problems caused by differences in local airflow characteristics. The protection function of the motor cover significantly improves the reliability and service life of the fan motor 12, and reduces maintenance costs and failure rates. This combination of hardware optimization and control system provides a reliable guarantee for the temperature control device to maintain excellent performance in various application environments, and embodies the concept of giving equal importance to performance and reliability in engineering design.

[0098] In some embodiments, the reference body contains an aqueous glycerol solution.

[0099] In the present invention, by using a glycerol-water solution as a reference, precise simulation of the temperature characteristics of stored items and high-precision temperature detection are achieved. The glycerol-water solution has thermophysical properties similar to those of most stored items. Its specific heat capacity, thermal conductivity, and thermal inertia accurately reflect the temperature variations of actual stored items, allowing the temperature data collected by the corrected temperature sensor 31 to more accurately represent the actual temperature conditions of the stored items. This increased temperature detection accuracy directly improves the control system's effectiveness, providing a reliable data foundation for achieving true constant temperature precision control.

[0100] Specifically, the glycerol aqueous solution is a mixed solution of glycerol and water prepared in a certain proportion, and its thermophysical properties can be optimized and adjusted by adjusting the ratio of glycerol to water. The specific heat capacity of the glycerol aqueous solution is between that of pure water and pure glycerol, and is similar to the specific heat capacity of most biological products, medicines and foods. This means that when the ambient temperature changes, the temperature change rate of the glycerol aqueous solution is basically consistent with the actual stored items. The thermal conductivity of the glycerol aqueous solution is moderate, and it will neither lose the representativeness of temperature changes due to excessive heat conduction, nor affect the timeliness of temperature detection due to excessive heat conduction. The glycerol aqueous solution also has good chemical stability and antifreeze properties, and is not easy to freeze in low-temperature environments, ensuring the normal operation of the correction temperature sensor 31 under various temperature conditions. The density and viscosity characteristics of the glycerol aqueous solution enable it to form good thermal contact with the correction temperature sensor 31, ensuring the accuracy and rapidity of temperature transfer.

[0101] In a specific embodiment, when a temperature control device is used for ultra-low temperature storage in a biological sample library, the temperature stability of the biological sample is directly related to the activity and integrity of the sample. Biological samples typically contain large amounts of water and organic matter, and their thermophysical properties are highly similar to those of glycerol aqueous solutions. By using glycerol aqueous solutions as a reference medium, the corrected temperature sensor 31 can accurately reflect the actual temperature changes of the biological sample: when the ambient temperature fluctuates, the temperature response of the glycerol aqueous solution is essentially synchronized with that of the biological sample, and the temperature information received by the controller truly reflects the temperature condition of the sample. When the system performs temperature adjustment, the temperature change process of the glycerol aqueous solution is consistent with that of the biological sample, allowing the control system to accurately determine the adjustment effect and avoid over- or under-adjustment. In particular, during temperature changes, the thermal inertia of the glycerol aqueous solution is similar to that of the biological sample, accurately simulating the temperature hysteresis characteristics of the sample, providing accurate feedback information to the control system, ensuring that the biological sample is always maintained within a safe temperature range, and providing reliable sample storage conditions for scientific research and medical applications.

[0102] Although the above scheme establishes a dual-reference body temperature detection system, if the thermophysical properties of the medium used in the reference body are significantly different from those of the actual stored items, the temperature detection may be insufficiently representative, affecting the accuracy and reliability of the control system.

[0103] In the embodiment of the present invention, by loading a glycerol aqueous solution into the reference body, a high degree of matching between the temperature detection medium and the thermal characteristics of the stored items is achieved. The glycerol aqueous solution has been carefully formulated, and its thermophysical parameters can accurately simulate the characteristics of the vast majority of items that require constant temperature storage, including biological products, medicines, chemical reagents, food, etc. The scientific nature of this medium selection ensures the accuracy and representativeness of the data collected by the correction temperature sensor 31, and provides true and reliable temperature feedback information for the control system. The stability and antifreeze properties of the glycerol aqueous solution also ensure the reliable operation of the reference body under various temperature conditions, avoiding detection errors caused by medium phase changes or performance changes. This carefully designed temperature detection scheme and the perfect coordination of the entire constant temperature precision control system provide key technical support for achieving high-precision and high-stability temperature control, ensuring that various temperature-sensitive items can obtain the most suitable storage environment.

[0104] An embodiment of the present application provides a refrigerator, comprising: a refrigerator body 7 ; and the above-mentioned temperature control device, which is arranged in the refrigerator body 7 .

[0105] In the present invention, a complete constant-temperature refrigerated product is achieved by including a refrigerated container 7 and a temperature control device according to any one of claims 1 to 10, the temperature control device being disposed within the refrigerated container 7. This product-level technical solution perfectly combines advanced constant-temperature precision control technology with the practical refrigerated container 7, providing users with a high-precision temperature control solution that is ready for use right out of the box. This solution meets the needs of various application scenarios with strict temperature requirements, transforming cutting-edge temperature control technology into a practical commercial product, and has significant practical value and market significance.

[0106] Specifically, the refrigerated box body 7 provides a sealed working environment and structural support for the temperature control device, and its thermal insulation performance directly affects the working efficiency and control accuracy of the temperature control device. The design of the refrigerated box body 7 takes into account the installation requirements of the temperature control device, and provides suitable installation positions and fixing methods for key components such as the air duct back plate 11, the evaporator 2, and the reference body. The internal layout of the refrigerated box body 7 optimizes the air flow channel, ensuring that the air flow generated by at least two fan motors 12 can form an effective circulation in the box to achieve uniform temperature distribution. The refrigerated box body 7 also integrates the necessary electrical interfaces and control panels, providing users with a convenient operating interface and parameter setting functions. The design of the entire refrigerated box product also takes into account safety, reliability and ease of maintenance, including over-temperature protection, fault alarm, easy-to-clean internal surface treatment and other features, providing users with a safe and reliable use experience.

[0107] In a specific embodiment, when this refrigerator product is used in a hospital pharmacy, medical staff require a medication storage device that offers precise temperature control, ease of operation, and safety and reliability. This refrigerator integrates a complete temperature control system. Medical staff simply set the target temperature, and the system automatically executes a precise temperature control program. The excellent thermal insulation performance of the refrigerator body 7 reduces the impact of the external environment on the internal temperature. The temperature control device's multi-fan air circulation system ensures uniform temperature within the medication storage space. A dual-reference temperature detection system monitors the actual medication temperature in real time. An intelligent controller precisely adjusts the cooling capacity and airflow distribution based on temperature feedback. In emergencies requiring quick access to medications, frequent door openings will not significantly affect the internal temperature, ensuring the safe storage of other medications. The refrigerator is also equipped with temperature recording and alarm functions, promptly alerting medical staff of temperature abnormalities to ensure the safe storage of medications. This integrated product design significantly improves the efficiency and safety of pharmacy management.

[0108] In related technologies, refrigeration products on the market usually use traditional temperature control technology, which has problems such as uneven temperature distribution, insufficient control accuracy, and poor stability. It is difficult to meet the needs of professional applications with strict temperature requirements, especially in the fields of medical care, scientific research, biotechnology, etc.

[0109] In the embodiment of the present invention, by integrating an advanced temperature control device into the refrigerated box body 7, a major breakthrough in temperature control technology and a significant improvement in product performance have been achieved. The refrigerated box product has advanced technical features such as multi-fan airflow circulation, dual reference body temperature detection, and intelligent collaborative control. The temperature control accuracy and stability far exceed those of traditional products. The integrated design of the product ensures the perfect coordination of various technical components and maximizes the efficiency of the entire technical solution. Users can obtain professional-level temperature control performance without the need for complicated installation and debugging processes, which greatly reduces the application threshold of advanced technologies. The product also has good scalability and adaptability, and can adapt to different application requirements through parameter adjustment. It provides reliable temperature control solutions for various industries and promotes the industrial application and popularization of constant temperature storage technology.

[0110] like Figure 9 As shown, an embodiment of the present application provides a temperature control method, which is applied to the above-mentioned temperature control device, comprising the following steps:

[0111] S1, obtaining temperature values collected by the reference body correction temperature sensor 31 at different locations;

[0112] S2. Calculate the corrected target temperature value of the reference body according to the temperature value;

[0113] S3. Adjust the start and stop control parameters of the compressor according to the temperature difference between the preset demand temperature and the reference body corrected target temperature value;

[0114] S4. Adjust the rotation speed of the corresponding fan motor 12 according to the temperature difference between the reference body temperature at different positions and the preset temperature.

[0115] In the present invention, by acquiring temperature values collected by correction temperature sensors 31 at different locations within a reference body, calculating a corrected target temperature value for the reference body based on these temperature values, adjusting the compressor's on / off control parameters based on the temperature difference between a preset demand temperature and the corrected target temperature value for the reference body, and adjusting the speed of the corresponding fan motor 12 based on the temperature difference between the reference body temperature at different locations and the preset temperature, a precise control method based on multi-point temperature detection is established. This control method fundamentally changes the traditional single-point temperature control model. Through multi-dimensional temperature information processing and a hierarchical control strategy, it achieves decoupling and optimization of compressor control and fan control, providing a scientifically advanced control algorithm for the temperature control device, significantly improving the accuracy, stability, and response speed of temperature control.

[0116] Specifically, this control method first collects multi-point temperature information from reference bodies distributed at different locations. This temperature data reflects the actual temperature distribution in the refrigerated space. The process of calculating the reference body's corrected target temperature comprehensively considers the temperature conditions at each location, resulting in a target value that better represents the overall temperature level. The compressor's on / off control is based on a comparison of the preset demand temperature with the reference body's corrected target temperature. This control strategy considers both the user's set requirements and the actual temperature conditions, avoiding the frequent on / off or response lag issues found in traditional control. The fan motor 12's speed is adjusted based on the specific difference between the reference body temperature at each location and the preset temperature, achieving precise regulation in each region. When the temperature in a certain region is too high, the fan speed in that region is increased to enhance airflow circulation in that region; when the temperature in a certain region is too low, the fan speed in that region is reduced accordingly to avoid overcooling. This hierarchical, multi-objective control strategy organically combines overall temperature control with local temperature regulation.

[0117] In a specific embodiment, this control method is applied to cell culture incubators in biological laboratories. Cell culture has extremely stringent temperature requirements, requiring not only precise temperature control within a set range but also uniform temperature distribution to prevent localized temperature anomalies from affecting cell growth. Using this temperature control method, the system first collects temperature information from reference bodies placed at different locations within the incubator. This data accurately reflects the temperature conditions of the incubation environment. The control system calculates a corrected target temperature value for the reference bodies, integrating the temperature conditions of each zone and providing an accurate reference for compressor control. If the overall temperature within the incubator deviates from the set value, the system adjusts the compressor operating parameters to quickly correct the overall temperature trend. Simultaneously, the system analyzes temperature differences at various locations and adjusts the fan speed in the corresponding zone accordingly. If the temperature in the upper portion of the incubator is too high, the system increases the fan speed to enhance cooling in that zone. If the temperature in a corner is too low, the system appropriately reduces the fan speed in that zone to prevent overcooling. This precise, zone-specific control ensures temperature uniformity throughout the incubation space, providing ideal environmental conditions for cell culture and significantly improving experimental success rates and reproducibility.

[0118] In related technologies, traditional temperature control methods are usually based on single-point temperature detection and use simple switch control or proportional control. They cannot effectively deal with the problem of uneven spatial temperature distribution, have limited control accuracy and insufficient stability, and are difficult to meet the application requirements of high-precision temperature control.

[0119] In the embodiment of the present invention, a major innovation and performance breakthrough in temperature control technology is achieved by establishing a hierarchical control method based on multi-point temperature detection. This method makes full use of the rich temperature information provided by multiple reference bodies, obtains accurate control targets through scientific algorithm processing, and avoids the limitations of single-point detection. The separation optimization strategy of compressor control and fan control enables the overall temperature control and local temperature regulation to be coordinated, which not only ensures the accuracy of the overall temperature, but also achieves the uniformity of temperature distribution. The control method also has good adaptive capabilities and can dynamically adjust the control strategy according to actual temperature feedback to adapt to different load changes and environmental conditions. This advanced control method provides powerful software support for the temperature control device, enabling it to maintain excellent control performance in various complex application scenarios, and provides reliable technical support for professional applications with strict temperature requirements.

[0120] In some embodiments, two reference bodies are provided, namely a first reference body and a second reference body, wherein the first reference body is provided at the upper end of the refrigeration duct assembly (1), and the second reference body is provided at the lower end of the refrigeration duct assembly (1), and the at least two fan motors 12 are a first fan motor 121, a second fan motor 122, and a third fan motor 123 which are spaced apart from each other from top to bottom; the temperature control method further comprises:

[0121] S5, obtaining the average temperature values periodically collected by the correction temperature sensors (31) in the first reference body and the second reference body, averaging the average temperatures of the first reference body and the second reference body to obtain a reference body correction target temperature value, and controlling the compressor to start when the reference body correction target temperature value is greater than the preset temperature value; and controlling the compressor to stop when the reference body correction target temperature value is less than or equal to the preset temperature value;

[0122] S6. Calculate a first temperature difference between the first reference body temperature value and a preset temperature value, and calculate a second temperature difference between the second reference body temperature value and a preset temperature value; adjust the rotation speed of the first fan motor (121) according to the first temperature difference, adjust the rotation speed of the third fan motor (123) according to the second temperature difference, and adjust the rotation speed of the second fan motor (122) according to the average value of the first temperature difference and the second temperature difference.

[0123] In an application, a corresponding relationship is set between the fan speed and the temperature difference; when the first temperature difference is calculated, the first speed corresponding to the first temperature difference is found; when the second temperature difference is calculated, the second speed corresponding to the second temperature difference is found; and the second speed corresponding to the average value of the first temperature difference and the second temperature difference is found.

[0124] For example: if the temperature value of the first reference body is subtracted from the preset temperature value, and the first temperature difference is 5 degrees, it means that the temperature value of the first reference body has not yet reached the preset temperature value, and the fan speed can be 100 rpm at this time; so that the fan blows air at a high speed to the area where the first reference body is located to quickly cool it down; if the first temperature difference is 2 degrees, it means that the temperature value of the first reference body is approaching the preset temperature value, and the fan speed can be 50 rpm at this time. Other temperature values can also correspond to a speed value respectively. The general trend of the corresponding relationship between the fan speed and the temperature difference is that the greater the temperature difference, the greater the speed. When the temperature value of the first reference body is equal to or less than the preset temperature value, the fan stops rotating. The temperature difference and speed settings of other reference bodies are similar.

[0125] In the present invention, by obtaining the average temperature values periodically collected by the correction temperature sensors 31 in the upper and lower reference bodies, the average values of the upper and lower reference body temperatures are averaged to obtain a reference body correction target temperature value for controlling the start and stop of the compressor. A first temperature difference between the upper reference body temperature and a preset temperature is calculated, as is a second temperature difference between the lower reference body temperature and a preset temperature. The speed of the first fan motor 121 is adjusted based on the first temperature difference, the speed of the third fan motor 123 is adjusted based on the second temperature difference, and the speed of the second fan motor 122 is adjusted based on the average value of the first and second temperature differences. This achieves a precise regional control method based on dual reference bodies. This control method clarifies the specific data processing flow and control strategy, improves data reliability through periodic temperature collection and average value calculation, and achieves precise regulation of spatial temperature through differentiated control of the upper and lower reference bodies, providing a specific and feasible high-precision control algorithm for temperature control devices.

[0126] In another embodiment of the present application, at least two correction temperature sensors and correction controllers may be provided in each reference body assembly; the two correction temperature sensors may be at different distances from the inner wall of the box body in the reference body.

[0127] The input end of the correction controller is respectively connected to at least two of the correction temperature sensors, and the output end is connected to the constant temperature controller. The correction controller outputs a target temperature value to the constant temperature controller based on the temperature values of the at least two correction temperature sensors; the target temperature value includes a collected temperature value collected by one of the temperature sensors, or an average of the collected temperature values collected by at least two of the temperature sensors.

[0128] For the reference body, due to the unevenness of its internal and external temperatures when refrigerated, the temperature collected by a temperature sensor set at a certain position therein cannot reflect the overall temperature. In the embodiment of the present application, by setting multiple correction temperature sensors and correction controllers in the reference body, the value of a single correction temperature sensor is no longer used as the standard. Instead, the correction controller is used to comprehensively calculate the temperature values of multiple correction temperature sensors as the target temperature value, which can more objectively represent the actual temperature value of the reference body.

[0129] Specifically, this control method utilizes periodic temperature acquisition. By sampling multiple times within a preset time period and calculating the average, it effectively eliminates random errors and transient fluctuations in temperature measurement, improving the accuracy and stability of temperature data. The average temperature of the upper and lower reference bodies reflects the temperature conditions in the upper and lower key areas of the refrigerated space. The reference body's corrected target temperature, calculated by averaging these two averages, comprehensively represents the temperature level of the entire refrigerated space, providing a reliable reference for compressor control. The first and second temperature differences, respectively, reflect the degree of deviation from the target temperature in the upper and lower areas. A fan speed adjustment strategy based on these temperature differences enables targeted regional control: the first fan motor 121 adjusts its speed based on the first temperature difference, primarily affecting airflow circulation in the upper area; the third fan motor 123 adjusts its speed based on the second temperature difference, primarily affecting airflow circulation in the lower area; and the second fan motor 122 adjusts its speed based on the average of the first and second temperature differences, providing a balancing effect in the middle area. This differentiated control strategy for the three fans achieves three-dimensional temperature regulation.

[0130] In a specific embodiment, when this control method is applied to blood product storage equipment in a blood bank, blood products are extremely sensitive to temperature, requiring precise storage temperature control within a range of 2-6°C, with uniform temperature distribution to prevent localized temperature anomalies from degrading blood product quality. Using this precise zoned control method, the system periodically collects temperature data from upper and lower reference bodies, eliminating the interference of transient temperature fluctuations and obtaining stable and reliable temperature information. When blood bank staff frequently open the door to access blood products, the upper reference body first detects a temperature increase. The system calculates a first temperature difference and increases the speed of the first fan motor 121 accordingly, enhancing cooling in the upper area and quickly eliminating the thermal load caused by door opening. The lower reference body monitors the temperature in the lower area. If the lower temperature is too low, the system appropriately reduces the speed of the third fan motor 123 based on the second temperature difference to prevent overcooling that could cause the blood products to approach freezing. The second fan motor 122 adjusts based on the average of the upper and lower temperature differences, balancing the temperature in the middle area and ensuring uniform temperature distribution throughout the storage space. This precise control method ensures that blood products are maintained at an optimal temperature throughout storage, providing safe and reliable blood product protection for medical treatment.

[0131] Although the above scheme establishes a control framework based on multi-point temperature detection, it lacks specific data processing methods and control strategy details, which may lead to inaccurate control effects in actual applications and fail to fully utilize the performance advantages of multi-reference body and multi-fan systems.

[0132] In the embodiment of the present invention, the quality and reliability of temperature data are significantly improved by specifying in detail the data processing method for periodic temperature collection and average value calculation. The clear strategy of calculating the temperature difference of the dual reference bodies and regulating the three fans separately realizes the refined management of space temperature control. The differentiated control strategy of the first fan motor 121, the second fan motor 122, and the third fan motor 123 fully utilizes the flexibility of the three-fan system to realize independent and precise adjustment of the upper, middle, and lower areas. This specific control method not only improves the accuracy and response speed of temperature control, but also enhances the system's adaptability to various disturbances. Whether it is door opening operation, load change or ambient temperature fluctuation, the system can quickly restore to a stable state through precise regional control. The practicality and effectiveness of this control method provide strong technical support for the promotion and application of temperature control devices in professional application fields.

[0133] In some embodiments, the reference body corrected target temperature value is dynamically adjusted according to the ambient temperature range, the temperature difference corresponds to a preset temperature adjustment range, and the speed adjustment of the fan motor 12 corresponds to the corresponding temperature adjustment range.

[0134] In the present invention, a reference body is used to correct the target temperature value and dynamically adjust it according to the ambient temperature range. The temperature difference corresponds to a preset temperature adjustment range, and the speed adjustment of the fan motor 12 corresponds to the corresponding temperature adjustment range, thereby realizing an adaptive intelligent temperature control method. This dynamic adjustment control strategy fully considers the impact of changing environmental conditions on temperature control. By establishing a corresponding relationship between the temperature difference and the adjustment range, the control system can automatically optimize the control parameters according to the actual situation, improving the system's adaptability and stability, and avoiding the problem of different control effects that may occur under different environmental conditions when the control parameters are fixed.

[0135] Specifically, the dynamic adjustment mechanism for correcting the target temperature value of the reference body adopts different correction strategies according to different ranges of ambient temperature. When the ambient temperature is high, the system will appropriately increase the calculation weight of the target temperature value to enhance the cooling response; when the ambient temperature is low, the system will adjust the target temperature value accordingly to avoid over-cooling. The correspondence between the temperature difference and the temperature adjustment range establishes the concept of graded control. Different degrees of temperature deviation correspond to adjustment actions of different intensities: small temperature differences correspond to the fine-tuning range for fine adjustment; medium temperature differences correspond to the standard adjustment range for regular adjustment; large temperature differences correspond to the rapid adjustment range for intensive adjustment. The correspondence between the speed adjustment of the fan motor 12 and the temperature adjustment range ensures the accuracy and consistency of the adjustment action, avoiding the problem of over-adjustment or under-adjustment. This graded adjustment strategy not only improves the control accuracy, but also optimizes the energy consumption performance of the system, achieving efficient operation while meeting the temperature control requirements.

[0136] In a specific embodiment, when the control method is applied to mobile refrigeration equipment in vaccine cold chain transport vehicles, the equipment needs to maintain a stable vaccine storage temperature under different climatic conditions and ambient temperatures. Using an adaptive intelligent control method, when the transport vehicle drives from a cold area into a hot area, significant changes in ambient temperature are detected by the system. The control system automatically adjusts the calculation method of the reference body to correct the target temperature value according to the ambient temperature range, thereby enhancing the sensitivity of the refrigeration response in hot environments. When a temperature deviation is detected, the system responds in a graded manner according to the preset temperature adjustment range: fine-tuning is performed for slight deviations to maintain temperature stability; standard adjustment is performed for moderate deviations to quickly correct the temperature; and rapid adjustment mode is activated for severe deviations to maximize refrigeration capacity. The speed adjustment of the fan system is strictly carried out in accordance with the corresponding relationship, ensuring the predictability and consistency of the adjustment effect. This intelligent adaptive control ensures that the vaccine can be kept within a safe temperature range throughout the transportation process, unaffected by changes in the external environment, and provides reliable protection for the quality safety of the vaccine and the integrity of the cold chain.

[0137] Moreover, in the embodiment of the present invention, an intelligent upgrade of the control system is achieved by introducing a dynamic adjustment mechanism of the ambient temperature range and a control strategy corresponding to the temperature difference level. The dynamic adjustment mechanism enables the system to automatically optimize the control parameters according to the actual environmental conditions, ensuring that excellent control performance can be maintained in different environments. The control strategy corresponding to the level improves the response accuracy and efficiency of the system, and can perform fine-tuning to maintain stability, and can also perform rapid enhanced adjustments to deal with emergencies. This adaptive control method greatly enhances the environmental adaptability and application flexibility of the temperature control device, enabling it to maintain stable and reliable temperature control performance under various complex and changing environmental conditions, providing a unified high-quality solution for diverse usage scenarios such as mobile applications, seasonal changes, and regional differences, and significantly improving the practical value and market competitiveness of the equipment.

[0138] In some embodiments, the temperature control device further includes a temperature sensor 6 for collecting the ambient temperature of the refrigerated space; and the temperature control method further includes:

[0139] S7. The ambient temperature of the refrigerated space is collected through the temperature sensor 6, and the start and stop control of the compressor is coordinated based on the reference body corrected target temperature value and the ambient temperature.

[0140] In the present invention, the temperature control device also includes a temperature sensor 6 for collecting the ambient temperature of the refrigerated space. The temperature control method also includes collecting the ambient temperature of the refrigerated space through the temperature sensor 6. The compressor start and stop control is coordinated based on the reference body's corrected target temperature value and the ambient temperature, thereby realizing a dual-sensor fusion collaborative control method. This collaborative control strategy fully utilizes the respective advantages of the rapid response of the ambient temperature sensor 6 and the precise representation of the reference body temperature sensor 6. By fusing the two types of temperature information, it ensures both the rapid response capability of the control system and the accuracy of the control target. This provides a more intelligent and reliable control solution for the temperature control device and significantly improves the control performance and stability of the system in complex environments.

[0141] Specifically, the ambient temperature sensor 6 directly detects the temperature of the air in the refrigerated space. It has a fast response speed and can promptly reflect environmental changes, such as the immediate impact of door opening operations, external temperature fluctuations, etc. on the refrigerated space. The reference body's corrected target temperature value is based on the temperature of the glycerol aqueous solution in the reference body, which is more representative of the temperature conditions of the actual stored items. However, due to the existence of thermal inertia, its changes are relatively slow. The collaborative control strategy comprehensively utilizes the characteristics of the two types of temperature information: when the ambient temperature changes rapidly, the system mainly responds quickly based on the information of the ambient temperature sensor 6 and initiates corresponding refrigeration or adjustment measures; when the system tends to stabilize, the system relies more on the reference body's corrected target temperature value for precise control to ensure that the actual temperature of the stored items meets the requirements. This dual-guarantee control mechanism avoids both the over-response problem that may arise from relying solely on ambient temperature and the response lag problem that may arise from relying solely on reference body temperature, achieving a perfect balance between speed and accuracy.

[0142] In a specific embodiment, when this collaborative control method is applied to food preservation cabinets in high-end restaurants, the freshness and quality of ingredients directly impact dish quality and customer experience. Frequent door openings, kitchen temperature fluctuations, and temperature fluctuations during peak meal times all pose challenges to food preservation. Using a dual-sensor collaborative control approach, when a chef opens the door to access food, the ambient temperature sensor 6 immediately detects the temperature rise. The system quickly activates cooling boost mode, increasing compressor power and fan speed to quickly compensate for the thermal load caused by the door opening. Simultaneously, the reference temperature sensor 6 continuously monitors the actual temperature changes of the food. Due to the thermal inertia of the reference body, the temperature changes relatively slowly, providing a stable control target for the system. When the door is closed, the ambient temperature quickly recovers, and the system adjusts the cooling intensity accordingly based on the ambient temperature information. The reference temperature information ensures that the actual temperature of the food remains within the optimal freshness range. This collaborative control strategy not only ensures temperature stability during frequent food use but also prevents frostbite caused by overcooling, ensuring optimal food quality and freshness, and providing reliable food preservation conditions for restaurants.

[0143] Although the above schemes have established a control method based on the reference body temperature, they lack a rapid response mechanism to changes in ambient temperature. When faced with drastic environmental changes, response lag may occur, affecting the timeliness and effectiveness of temperature control.

[0144] In the embodiment of the present invention, an intelligent upgrade of the temperature control system is achieved by introducing the ambient temperature sensor 6 and establishing a collaborative control mechanism with the reference body temperature. The ambient temperature sensor 6 provides a rapid response capability, capable of timely detecting and responding to various environmental disturbances; the reference body temperature sensor 6 provides a benchmark for precise control, ensuring the accuracy and representativeness of the control target. The collaborative fusion processing of the two sensor information enables the control system to have both the agility of rapid response and the accuracy of precise control. This collaborative control method greatly improves the system's adaptability to complex environments. Whether it is a sudden temperature change or a gradual environmental change, the system can make an appropriate response to ensure the quality and stability of temperature control. This collaborative control technology provides a strong technical guarantee for the application of temperature control devices in various dynamic environments, significantly improving the intelligence level and practical performance of the equipment.

[0145] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an", and "" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain", and "have" are inclusive and therefore specify the presence of the stated features, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0146] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0147] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A temperature control device, characterized in that: include: A refrigeration air duct assembly (1) comprises an air duct back plate (11) and at least two fan motors (12) arranged on the air duct back plate (11), wherein the at least two fan motors (12) are arranged at intervals along the air duct back plate (11), wherein at least one of the fan motors (12) is configured to suck air, and at least one of the fan motors (12) is configured to deliver air. an evaporator (2) disposed inside the refrigeration air duct assembly (1) and connectable to an external compressor; A reference body assembly (3) comprising at least two reference bodies arranged at different positions, each of the reference bodies being provided with a reference solution and a correction temperature sensor (31); A constant temperature controller is used to adjust the rotation speeds of the at least two fan motors (12) and the start / stop control parameters of the compressor according to the temperature information collected by the correction temperature sensor (31).

2. The temperature control device according to claim 1, characterized in that The air duct back plate (11) includes: an equipment side and a refrigerated space side; the air duct back plate is provided with through holes corresponding to each fan motor; the at least two fan motors (12) include a first fan motor (121), a second fan motor (122) and a third fan motor (123) spaced apart from top to bottom on the equipment side; the first fan motor (121) draws air from the equipment side to the refrigerated space side through the corresponding through holes; the second fan motor (122) and the third fan motor (123) supply air from the refrigerated space side to the equipment side through their respective corresponding through holes.

3. The temperature control device according to claim 2, characterized in that The evaporator (2) comprises an inflation evaporator (2) arranged from top to bottom on the equipment side.

4. The temperature control device according to claim 1, characterized in that Two reference bodies are provided, and the two reference bodies are respectively provided on the side of the refrigerated space and correspond to the upper and lower ends of the refrigerated air duct assembly (1).

5. The temperature control device according to claim 4, characterized in that The reference body assembly is a box body with an internal accommodation space and a box cover; the box body is provided with a liquid injection port, and the box cover is movably connected to the liquid injection port and can seal or open the liquid injection port; In each reference body assembly, the reference solution is located in the accommodation space in the box body, and the correction temperature sensor is located below the liquid surface of the reference solution.

6. The temperature control device according to claim 5, characterized in that: It also includes a temperature sensor (6) arranged on the side of the refrigerated space, for collecting the ambient temperature of the refrigerated space; The controller collaboratively controls the start and stop of the at least two fan motors and the compressor based on temperature information from the temperature sensor (6) and the corrected temperature sensor (31).

7. The temperature control device according to claim 1, characterized in that The air duct back plate (11) is provided with a front air outlet (111) and a bottom air outlet (112); as well as, The air duct back plate (11) comprises a back plate body and a bending portion, wherein the bending portion is arranged on the top of the back plate body, and the angle between the bending portion and the back plate body is less than 180°.

8. The temperature control device according to claim 1, characterized in that It also includes a curved motor cover (13) which is arranged on the blowing side of each fan motor (12).

9. The temperature control device according to claim 1, characterized in that: The reference body was filled with an aqueous glycerol solution.

10. A refrigerator, characterized in that: include: Refrigeration box (7); as well as The temperature control device according to any one of claims 1 to 9, wherein the temperature control device is arranged in the refrigeration box (7); The refrigeration air duct assembly divides the refrigeration box (7) into an equipment space and a refrigeration space, wherein the equipment space is located on the equipment side of the refrigeration air duct assembly; and the refrigeration space is located on the refrigeration space side of the refrigeration air duct assembly.

11. A temperature control method, applied to the temperature control device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Obtaining a preset temperature value and reference body temperature values collected by at least two reference body correction temperature sensors (31) at different locations; Calculating a corrected target temperature value of a reference body according to the temperature value of the reference body; adjusting the start / stop control parameters of the compressor according to the temperature difference between the preset temperature value and the corrected target temperature value of the reference body; According to the temperature difference between the reference body temperature value at different positions and the preset temperature value, the rotation speed of the corresponding fan motor (12) is adjusted respectively.

12. The temperature control method according to claim 11, characterized in that: The reference bodies are provided with two, a first reference body and a second reference body, wherein the first reference body is provided at the upper end of the refrigeration air duct assembly (1), and the second reference body is provided at the lower end of the refrigeration air duct assembly (1); the at least two fan motors (12) are a first fan motor (121), a second fan motor (122), and a third fan motor (123) spaced apart from each other from top to bottom; the on-off control parameters of the compressor are adjusted according to the temperature difference between the preset temperature value and the corrected target temperature value of the reference body, including: The average temperature values periodically collected by the correction temperature sensors (31) in the first reference body and the second reference body are obtained, and the average temperature values of the first reference body and the second reference body are averaged to obtain a reference body correction target temperature value. When the reference body correction target temperature value is greater than the preset temperature value, the compressor is controlled to start; when the reference body correction target temperature value is less than or equal to the preset temperature value, the compressor is controlled to stop.

13. The temperature control method according to claim 12, characterized in that: The method of adjusting the rotation speed of the corresponding fan motor (12) according to the temperature difference between the reference body temperature value at different positions and the preset temperature value comprises: Calculating a first temperature difference between the first reference body temperature value and a preset temperature value, and calculating a second temperature difference between the second reference body temperature value and the preset temperature value; The rotation speed of the first fan motor (121) is adjusted according to the first temperature difference, the rotation speed of the third fan motor (123) is adjusted according to the second temperature difference, and the rotation speed of the second fan motor (122) is adjusted according to the average value of the first temperature difference and the second temperature difference.

14. The temperature control method according to claim 13, characterized in that: A corresponding relationship is set between the fan speed and the temperature difference; when the first temperature difference is calculated, the first speed corresponding to the first temperature difference is found; when the second temperature difference is calculated, the second speed corresponding to the second temperature difference is found; and the second speed corresponding to the average value of the first temperature difference and the second temperature difference is found.

15. The temperature control method according to claim 11, characterized in that: The temperature control device further comprises a temperature sensor (6) for collecting the ambient temperature of the refrigerated space; the temperature control method further comprises: The ambient temperature of the refrigerated space is collected by a temperature sensor (6), and the start and stop control of the compressor is coordinated based on the reference body corrected target temperature value and the ambient temperature.

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