Temperature field performance improving device and constant temperature system

Abstract

The invention relates to the technical field of thermostatic baths, and discloses a thermal field performance improving device and a thermostatic system.A first shell and a second shell which are arranged in a thermostatic bath are provided, and then a first stirring unit and a heat transfer medium identical to the heat transfer medium in the thermostatic bath are arranged in an interlayer area in the first shell; a second stirring unit and a heat transfer medium which is the same as the heat transfer medium in the thermostatic bath are arranged in the measuring area in the second shell, then the first stirring unit and the second stirring unit are designed to be started in the heating and cooling process of the thermostatic bath, and the first stirring unit is closed when the temperature of the thermostatic bath is balanced, so that the temperature field uniformity in the interlayer area and the measuring area is good; the fluctuation of the temperature field in the measuring area can be reduced by utilizing the heat capacity of the heat transfer medium in the interlayer area, the good fluctuation of the temperature field in the measuring area is ensured, the requirement of high-precision temperature calibration work can be met, the device can be directly and additionally arranged in an existing thermostatic bath without large transformation, cost control is facilitated, meanwhile, the size is small, and the cost is low. The popularization is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of thermostatic baths, and in particular to a temperature field performance improvement device and a thermostatic system. Background Art

[0002] A constant temperature bath is a device specially designed to provide a constant temperature test environment. It is widely used to calibrate various temperature sensors.

[0003] With the continuous development of industrial and scientific research technology, researchers have continuously increased their requirements for the accuracy of temperature measurement, which has directly led to a significant increase in the demand for high-performance constant temperature baths (i.e., good uniformity and volatility of the temperature field).

[0004] At present, the uniformity and stability of the temperature field of mature thermostatic bath products on the market can generally only reach the level of 5-10mK / 10min, and such performance obviously cannot meet the stringent requirements of high-precision temperature calibration. Although there are some excellent thermostatic baths on the market, they can achieve a high precision level of about 1-2mK / 10min, however, these products need to be equipped with complex heating and cooling systems and temperature control systems, which not only leads to a significant increase in product size, but also greatly increases the cost of use.

[0005] Therefore, it is particularly urgent and important to innovate and upgrade the existing constant temperature bath technology.

[0006] The above information is presented as background information only to assist with understanding the present disclosure and no determination or admission is made as to whether any of the above may be used as prior art with respect to the present disclosure. Summary of the invention

[0007] The invention provides a temperature field performance improvement device and a constant temperature system to solve the problems existing in the prior art.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] In a first aspect, the present invention provides a temperature field performance improvement device, which is arranged in a constant temperature bath, and the device comprises a first shell, a second shell, a first stirring unit and a second stirring unit; wherein,

[0010] The interior of the first shell is a hollow structure and has a first opening;

[0011] The interior of the second shell is a hollow structure and is provided with a second opening; the direction of the second opening is the same as the direction of the first opening;

[0012] The second shell is arranged inside the first shell;

[0013] The interior of the first shell is a measurement area;

[0014] The space between the interior of the first shell and the second shell is a sandwich area;

[0015] The interiors of the measurement area and the interlayer area are respectively filled with the same heat transfer medium as the interior of the thermostatic bath;

[0016] The first stirring unit is arranged inside the interlayer area, and is used to start during the heating and cooling process of the thermostatic bath, and to shut down when the temperature of the thermostatic bath is balanced;

[0017] The second stirring unit is arranged inside the measuring area, and is used to start during the heating and cooling process of the thermostatic bath, and to continue working after the temperature of the thermostatic bath is balanced.

[0018] Furthermore, in the temperature field performance improvement device, the stirring direction of the first stirring unit is opposite to the stirring direction of the second stirring unit.

[0019] Furthermore, in the temperature field performance improvement device, the stirring direction of the first stirring unit is the same as the stirring direction of the second stirring unit, but the stirring rate of the first stirring unit is different from the stirring direction of the second stirring unit.

[0020] Furthermore, the temperature field performance improvement device further includes a bracket;

[0021] The bracket is connected to the first shell and the second shell, and is used to fix the first shell and the second shell in the constant temperature chamber.

[0022] Furthermore, in the temperature field performance improvement device, the first stirring unit is located at the bottom of the inner part of the interlayer area;

[0023] The second stirring unit is located at the bottom of the measuring area.

[0024] Furthermore, in the temperature field performance improvement device, the first stirring unit and the second stirring unit each include a stirring motor and a stirring paddle;

[0025] The stirring paddle is connected to the output shaft of the stirring motor through a coupling.

[0026] Furthermore, in the temperature field performance improvement device, the stirring paddle is provided with at least one layer of blade groups, and each layer of the blade groups includes at least two blades.

[0027] Furthermore, in the device for improving the thermal field performance, the blades in the blade groups located at different layers are arranged in an interlaced manner.

[0028] Furthermore, in the temperature field performance improvement device, the heat transfer medium is soft water.

[0029] In a second aspect, the present invention provides a constant temperature system, including a constant temperature tank and a temperature field performance improvement device as provided in the first aspect above;

[0030] The temperature field performance improvement device is arranged in the constant temperature chamber.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention provides a temperature field performance improvement device and a constant temperature system. The first shell and the second shell are provided in a constant temperature bath, and then a first stirring unit and a heat transfer medium same as those in the constant temperature bath are provided in the interlayer area in the first shell, and a second stirring unit and a heat transfer medium same as those in the constant temperature bath are provided in the measuring area in the second shell. Then, the first stirring unit and the second stirring unit are designed to be started during the heating and cooling process of the constant temperature bath, and the first stirring unit is turned off when the temperature of the constant temperature bath is balanced. Thus, not only the temperature field uniformity in the interlayer area and the measuring area is improved, but also the heat capacity of the heat transfer medium in the interlayer area can be utilized to reduce the fluctuation of the temperature field in the measuring area, thereby ensuring that the temperature field fluctuation in the measuring area is improved. The device can meet the requirements of high-precision temperature calibration work, and can be directly installed in the existing constant temperature bath without major modifications to some constant temperature baths, which is beneficial to cost control. At the same time, the device is also small in size and suitable for large-scale promotion and application.

[0033] The present invention has other features and advantages, which will be apparent from or will be described in detail in the accompanying drawings and the following detailed description incorporated herein, which together serve to explain the specific principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram of a temperature field performance improvement device provided in Embodiment 1 of the present invention;

[0036] Figure 2 It is a structural schematic diagram of a constant temperature system provided in Embodiment 2 of the present invention.

[0037] Reference numerals:

[0038] A first shell 1 , a second shell 2 , a first stirring unit 3 , a second stirring unit 4 , a measuring area 5 , an interlayer area 6 , a bracket 7 , and a constant temperature bath 8 . DETAILED DESCRIPTION

[0039] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0040] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0041] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0042] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0043] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0044] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0045] In this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0046] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0047] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] Embodiment 1

[0049] In view of the defects of the above-mentioned prior art, the applicant, based on many years of rich practical experience and professional knowledge in this field, and in conjunction with the application of theory, actively conducts research and innovation in the hope of creating a technology that can solve the defects of the prior art. After continuous research and design, and after repeated trial production and improvement, the present invention with real practical value was finally created.

[0050] Please refer to Figure 1 The embodiment of the present invention provides a temperature field performance improvement device, which is arranged in a constant temperature bath, and the device includes a first shell 1, a second shell 2, a first stirring unit 3 and a second stirring unit 4; wherein,

[0051] The interior of the first shell 1 is a hollow structure and has a first opening;

[0052] The interior of the second shell 2 is a hollow structure and has a second opening; the direction of the second opening is the same as the direction of the first opening; Figure 1 In the figure, the second opening and the first opening are both directed upwards;

[0053] The second housing 2 is arranged inside the first housing 1;

[0054] The interior of the first housing 1 is a measuring area 5; this area is a region for temperature measurement and calibration creatively proposed in an embodiment of the present invention, replacing the region for temperature measurement and calibration in the original thermostatic bath;

[0055] The space between the interior of the first shell 1 and the second shell 2 is a sandwich area 6, which provides the possibility for optimizing temperature control;

[0056] The interior of the measuring area 5 and the interlayer area 6 are respectively filled with the same heat transfer medium as the interior of the constant temperature bath, which ensures the consistency of the heat conduction efficiency of the entire device, thereby improving the accuracy of temperature control;

[0057] The first stirring unit 3 is arranged inside the interlayer area 6, and is used to start during the heating and cooling process of the thermostatic bath to promote uniform mixing of the heat transfer medium, and is closed when the temperature of the thermostatic bath is balanced to reduce unnecessary energy consumption;

[0058] The second stirring unit 4 is arranged inside the measuring area 5, and is used to start during the heating and cooling process of the thermostatic bath to promote uniform mixing of the heat transfer medium, and continues to work after the temperature of the thermostatic bath is balanced to ensure that the temperature field in the measuring area 5 always remains highly uniform.

[0059] The embodiment of the present invention not only significantly improves the temperature uniformity in the interlayer area 6 and the measuring area 5 through the configuration of the carefully designed double-layer shell structure and the double stirring assembly, but also cleverly utilizes the heat capacity characteristics of the heat transfer medium in the interlayer area 6, effectively reducing the fluctuation of the temperature field in the measuring area 5, thereby ensuring that the stability and volatility of the temperature field in the measuring area 5 reach excellent levels. This innovative design not only fully meets the stringent requirements of high-precision temperature calibration work, but also has a simple installation process and can be directly adapted to the existing thermostatic bath without large-scale modification of the original equipment, which is undoubtedly a huge advantage for cost control. In addition, the device is small in size, easy to carry and deploy, and is very suitable for promotion and application on a large scale.

[0060] In one implementation of this embodiment, in order to further optimize the heat exchange efficiency, a strategy of enhancing convective heat exchange is adopted. The implementation of this strategy can be achieved through the following two aspects:

[0061] On the one hand, the stirring directions of the first stirring unit 3 and the second stirring unit 4 are cleverly set to be opposite. This reverse stirring design can produce a stronger convection effect inside the interlayer area 6 and the measuring area 5, because when the stirring directions of the two areas are opposite, the heat transfer medium between them will form a more complex flow pattern, which can carry heat more effectively, thereby promoting rapid heat transfer and uniform distribution.

[0062] On the other hand, another solution can be tried, that is, keep the stirring directions of the first stirring unit 3 and the second stirring unit 4 the same, but on this basis, adjust their stirring rates to make a difference between the two. This design can also enhance the convective heat transfer effect, because different stirring rates will form a velocity gradient between the two areas, and this velocity gradient will drive the heat transfer medium to mix and flow more violently, thereby improving the heat transfer efficiency.

[0063] In summary, whether it is through reverse stirring or differentiated design of stirring rate, the purpose is to improve the heat exchange rate of the temperature field performance improvement device in the embodiment of the present invention by enhancing convective heat transfer. These two solutions have their own advantages, and the most appropriate strategy can be selected according to the actual application scenario and needs to achieve the best heat exchange effect.

[0064] Please refer again Figure 1 In one implementation of this embodiment, the device further includes a bracket 7;

[0065] The bracket 7 is a core component for connection and fixing, and is firmly connected to the first shell 1 and the second shell 2. This design not only ensures the stability of the position of the first shell 1 and the second shell 2 in the constant temperature chamber and avoids displacement caused by external factors, but also provides a solid support structure for the entire device, enabling it to perform temperature control and measurement tasks more reliably.

[0066] The introduction of the bracket 7 not only improves the structural stability of the device, but also simplifies the installation process, making it easier for operators to accurately position and fix the entire device at a predetermined position in the thermostatic bath. This design not only improves work efficiency, but also reduces potential risks caused by improper installation.

[0067] Please refer again Figure 1 In one implementation of this embodiment, special attention is paid to and the position layout of the stirring unit is optimized.

[0068] Specifically, the first stirring unit 3 is carefully placed at the bottom of the interlayer area 6. This location selection has its unique considerations: the bottom area is often a key area for heat accumulation and transfer. Placing the stirring unit here can more effectively promote the mixing and flow of the heat transfer medium in this area, thereby accelerating the transfer and uniform distribution of heat. In addition, the bottom position can also ensure that the stirring unit will not directly interfere with the measurement area 5 during operation, ensuring the accuracy and stability of the measurement.

[0069] Similarly, the second stirring unit 4 is also cleverly placed at the bottom of the measuring area 5. This layout corresponds to the first stirring unit 3, and together they constitute the convection heat exchange system of the entire device. In the measuring area 5, the bottom is also a key area for heat transfer and temperature measurement, so placing the stirring unit here can maximize the uniformity and stability of the temperature field.

[0070] In summary, by placing the first stirring unit 3 and the second stirring unit 4 at the inner bottom of the interlayer area 6 and the measuring area 5 respectively, not only the heat transfer efficiency is optimized, but also the accuracy and stability of the temperature measurement are ensured.

[0071] In one implementation of this embodiment, the first stirring unit 3 and the second stirring unit 4 both include a stirring motor and a stirring paddle to provide a more powerful and precise power output;

[0072] Specifically, the stirring paddles in the first stirring unit 3 and the second stirring unit 4 are tightly and firmly connected to the output shafts of the respective stirring motors through precise couplings. This design ensures that the stirring motor can efficiently transmit power to the stirring paddle, thereby driving it to perform stable rotational motion. The rotation of the stirring paddle not only promotes the mixing and flow of the heat transfer medium, but also enhances the heat transfer efficiency, making the temperature field of the entire device more uniform and stable.

[0073] In addition, the combined design of the stirring motor and the stirring paddle also brings many advantages. For example, the controllability of the stirring motor enables the stirring rate and stirring direction to be adjusted according to actual needs, thereby achieving precise control of the temperature field. At the same time, the durability and reliability of the stirring paddle also ensure the stability and durability of the entire device during long-term operation.

[0074] In a more specific implementation of this embodiment, the design of the stirring paddle is further innovated and optimized. Specifically, at least one layer of blade groups is cleverly arranged on the stirring paddle, and each layer of blade groups includes at least two blades.

[0075] This multi-layer and multi-blade design allows the stirring paddle to more fully contact and mix with the heat transfer medium when rotating. Each layer of blades can push the heat transfer medium to flow at its level, and the combination of multiple blades can further enhance this flow effect, allowing the heat transfer medium to form a more complex and intense flow pattern under the action of the stirring paddle.

[0076] This design not only improves the heat transfer efficiency, but also enhances the uniformity of the temperature field, because when the heat transfer medium flows violently under the action of the stirring paddle, the heat can be transferred to the entire area more quickly, thus avoiding local overheating or overcooling.

[0077] In addition, the multi-layer and multi-blade design also enables the stirring paddle to better adapt to different working environments and temperature requirements. The number of blade groups and the shape, size and other parameters of the blades can be adjusted according to actual needs to achieve precise control of the temperature field.

[0078] In summary, the performance of the agitator paddle is further improved by adopting a multi-layer and multi-blade design, so that the heat transfer efficiency, temperature field uniformity and adaptability of the entire temperature field performance improvement device are significantly improved.

[0079] In a more refined implementation of this embodiment, the blade groups on the stirring paddle are more cleverly arranged. Specifically, the blades in the blade groups located at different layers are carefully arranged in a staggered manner.

[0080] This staggered layout is designed to further optimize the contact and mixing effect between the impeller and the heat transfer medium during rotation. When the impeller rotates, the blades of different layers will contact the heat transfer medium in turn, and the staggered arrangement of the blades can ensure that each layer of the blades can fully participate in the flow process, thus avoiding the flow dead spots caused by improper blade layout in certain areas.

[0081] In addition, the staggered blades can also form more complex and violent turbulence when rotating, which can more effectively promote the mixing of heat transfer media and heat transfer, because turbulence can increase the collision and friction between heat transfer media, thereby accelerating the heat transfer process.

[0082] This design not only improves the heat transfer efficiency, but also further enhances the uniformity of the temperature field. This is because when the heat transfer medium forms more violent turbulence under the action of the stirring paddle, the heat can be transferred to the entire area more quickly, thus avoiding local overheating or overcooling, and ensuring the stability and accuracy of the temperature field.

[0083] In one implementation of this embodiment, the heat transfer medium is soft water.

[0084] It should be noted that soft water, due to its low mineral content and excellent thermal conductivity, is an ideal choice for devices that improve temperature field performance. Compared with hard water or other heat transfer media, soft water can transfer heat more effectively, reduce energy loss, and form a more uniform and stable temperature field during the mixing process.

[0085] In addition, soft water has the advantages of being less prone to scaling and less corrosive to equipment, which helps to extend the service life of the entire device and reduce downtime and maintenance costs caused by equipment damage.

[0086] After testing, for a constant temperature bath whose temperature uniformity and fluctuation were originally at the level of 5mK / 10min, when the device provided in this embodiment is placed in it, the temperature uniformity and fluctuation can be improved to within 1mK / 10min.

[0087] Although the terms such as shell and stirring unit are used more frequently in this application, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

[0088] A temperature field performance improvement device provided by an embodiment of the present invention provides a first shell and a second shell arranged in a constant temperature bath, and then arranges a first stirring unit and a heat transfer medium same as that in the constant temperature bath in the interlayer area in the first shell, and arranges a second stirring unit and a heat transfer medium same as that in the constant temperature bath in the measuring area in the second shell. Then, the first stirring unit and the second stirring unit are designed to be started during the heating and cooling process of the constant temperature bath, and the first stirring unit is closed when the temperature of the constant temperature bath is balanced. This not only makes the temperature field uniformity in the interlayer area and the measuring area good, but also reduces the fluctuation of the temperature field in the measuring area by utilizing the heat capacity of the heat transfer medium in the interlayer area, thereby ensuring good fluctuation of the temperature field in the measuring area. This not only meets the requirements of high-precision temperature calibration work, but also can be directly installed in an existing constant temperature bath without major modifications to some constant temperature baths, which is beneficial to cost control. At the same time, it is also small in size and suitable for large-scale promotion and application.

[0089] Embodiment 2

[0090] Please refer to Figure 2 , Embodiment 2 of the present invention provides a constant temperature system, including a constant temperature bath 8 and a temperature field performance improvement device as provided in Embodiment 1 above;

[0091] The thermostatic bath 8, as the main structure of the whole system, provides a stable and controllable external environment for the temperature field performance improvement device. It can not only accommodate and fix the temperature field performance improvement device, but also ensure that the temperature in the bath is maintained within a preset range through its internal temperature adjustment mechanism, thereby providing an accurate benchmark for experimental activities such as temperature measurement and calibration.

[0092] The temperature field performance improvement device is the focus of the present invention. It can not only significantly improve the heat transfer efficiency, but also ensure the uniformity and stability of the temperature field, thereby providing strong support for various precise temperature measurements and calibration experiments.

[0093] When the temperature field performance improvement device is arranged in the constant temperature bath 8, the synergistic effect between the two will be brought into play to the extreme.

[0094] In summary, the constant temperature system provided in the second embodiment of the present invention, by ingeniously combining the constant temperature bath 8 and the temperature field performance improvement device, not only achieves accurate control and optimization of the temperature field, but also provides reliable technical support for various precise temperature measurement and calibration experiments. The emergence of this system will undoubtedly bring broader development prospects for research and application in related fields.

[0095] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A temperature field performance improvement device, arranged in a constant temperature bath, characterized in that: The device comprises a first shell (1), a second shell (2), a first stirring unit (3) and a second stirring unit (4); wherein: The interior of the first shell (1) is a hollow structure and is provided with a first opening; The interior of the second shell (2) is a hollow structure and is provided with a second opening; the direction of the second opening is the same as the direction of the first opening; The second shell (2) is arranged inside the first shell (1); The interior of the first housing (1) is a measuring area (5); The space between the interior of the first shell (1) and the second shell (2) is a sandwich area (6); The interiors of the measurement area (5) and the interlayer area (6) are respectively filled with the same heat transfer medium as the interior of the thermostatic bath; The first stirring unit (3) is arranged inside the interlayer area (6) and is used to start during the heating and cooling process of the thermostatic bath and to shut down when the temperature of the thermostatic bath is balanced; The second stirring unit (4) is arranged inside the measuring area (5), and is used to start during the heating and cooling process of the thermostatic bath, and to continue working after the temperature of the thermostatic bath is balanced.

2. The device for improving temperature field performance according to claim 1, characterized in that: The stirring direction of the first stirring unit (3) is opposite to the stirring direction of the second stirring unit (4).

3. The device for improving temperature field performance according to claim 1, characterized in that: The stirring direction of the first stirring unit (3) is the same as the stirring direction of the second stirring unit (4), but the stirring rate of the first stirring unit (3) is different from the stirring direction of the second stirring unit (4).

4. The device for improving temperature field performance according to claim 1, characterized in that: Also includes a bracket (7); The bracket (7) is connected to the first shell (1) and the second shell (2) and is used to fix the first shell (1) and the second shell (2) in the constant temperature chamber.

5. The device for improving temperature field performance according to claim 1, characterized in that: The first stirring unit (3) is located at the bottom of the inner part of the interlayer area (6); The second stirring unit (4) is located at the bottom inside the measuring area (5).

6. The device for improving temperature field performance according to claim 1, characterized in that: The first stirring unit (3) and the second stirring unit (4) both comprise a stirring motor and a stirring paddle; The stirring paddle is connected to the output shaft of the stirring motor through a coupling.

7. The device for improving temperature field performance according to claim 6, characterized in that: The stirring paddle is provided with at least one layer of blade groups, and each layer of the blade groups includes at least two blades.

8. The device for improving temperature field performance according to claim 7, characterized in that: The blades in the blade groups located at different layers are arranged alternately with each other.

9. The device for improving temperature field performance according to claim 1, characterized in that: The heat transfer medium is soft water.

10. A constant temperature system, characterized in that: It comprises a constant temperature bath (8) and a temperature field performance improvement device as claimed in any one of claims 1 to 9; The temperature field performance improvement device is arranged in the constant temperature chamber (8).

Images