PELTIER-BASED TEMPERATURE MAINTENANCE DEVICE FOR LABORATORY REACTIONS

Abstract

A Peltier-based temperature maintenance device for laboratory reactions, comprising cuboidal body 101 supported by multiple legs 102, a user-accessible lid 103 for placing a reaction vessel on a metallic net 201 within an insulated chamber, a rotatable knob 104 for user-defined temperature settings, and an inbuilt microcontroller to monitor and adjust temperature, with Styrofoam 207 inner walls to minimize heat exchange, a Peltier module with a cold side for vessel cooling and a hot side for heat dissipation, a protection plate 206 to separate these sides, motorized fans for circulating cold air and dissipating heat, a thermistor 208 for continuous monitoring, and a power cord 105 with an AC-DC converter to supply stable power, ensuring precise and efficient temperature control for sensitive laboratory experiments while maintaining a compact and user-friendly design.

Specification

Description:FIELD OF THE INVENTION

[0001] The present invention relates to a Peltier-based temperature maintenance device for laboratory reactions that allows precise user-defined temperature control during laboratory reactions while ensuring efficient cooling and heating mechanisms to maintain stable conditions for optimal experimental outcomes in laboratories.

BACKGROUND OF THE INVENTION

[0002] Maintaining specific temperatures during laboratory reactions, especially exothermic ones, is crucial for several reasons. In reactions such as diazonium salt synthesis and Grignard reactions, operating within precise temperature ranges (e.g., 0°C-5°C for diazonium salts and -10°C for Grignard reagents) helps to control the reaction rate and ensure product stability. Exothermic reactions release heat which lead to an uncontrolled increase in temperature if not properly managed. This temperature spike result in side reactions, decomposition of reactants or products, and even hazardous conditions such as explosions.

[0003] For example, diazonium salts are sensitive to heat and decompose explosively if the temperature exceeds safe limits. Similarly, Grignard reagents are highly reactive and undergo unwanted reactions with moisture or other compounds if the temperature rises too high. By maintaining low temperatures, chemists effectively slow down reaction kinetics, allowing for better control over the formation of desired products and minimizing the formation of byproducts. Additionally, low temperatures enhance the solubility of certain reactants, further optimizing reaction conditions. Employing external cooling methods, such as ice baths or refrigerated circulators, ensures that the reaction environment remains stable and allows for precise monitoring of temperature fluctuations. Careful temperature management is essential not only for the success of the reaction but also for the safety of laboratory personnel and the integrity of the experimental results.

[0004] Traditional methods of maintaining temperature in laboratory reactions often include ice baths, water baths, and heating mantles. Ice baths are commonly used to achieve low temperatures, providing a relatively simple and cost-effective means of cooling. However, they are prone to temperature fluctuations as the ice melts and requires constant monitoring to ensure the desired temperature is maintained. Water baths, while more stable than ice baths also suffer from thermal inertia and do not cool effectively for reactions requiring very low temperatures. Heating mantles are typically used for elevating temperatures, but they are difficult to control, often leading to overheating and potentially causing unwanted side reactions or degradation of sensitive compounds.

[0005] Moreover, these traditional methods lack precise temperature control, making this challenging to maintain the exact conditions needed for specific reactions. Additionally, they are labor-intensive, requiring manual adjustments and constant supervision, which are practical for prolonged reactions. The risk of uneven temperature distribution is another significant drawback, as this lead to hot spots or cold spots within the reaction mixture, affecting reaction outcomes. Furthermore, these methods are not suitable for large-scale reactions or for those requiring highly specific temperature profiles. As a result, researchers increasingly seek more techniques, which offer enhanced precision and reliability. The modern alternatives address many of the limitations of traditional methods, ensuring more consistent and safe reaction conditions while reducing the need for constant oversight.

[0006] US11801198B2 discloses about an invention that has an ice bath having a receptacle section and a temperature control element adjacent thereto and arranged to adjust the temperature of the receptacle section. The temperature control element is connected to a refrigeration module that reduces the temperature of the receptacle. The temperature control element is further connected to a heating module that increases the temperature of the receptacle. Although, US'198 discloses about an invention that features an ice bath with a temperature control element connected to a refrigeration module, however presents several drawbacks such as the reliance on traditional refrigeration methods, which are bulky and less efficient for achieving precise temperature control. The need for the refrigeration module leads to increased power consumption and a larger overall footprint, making this less suitable for laboratory environments where space is a premium.

[0007] US6578367B1 discloses about an invention that liquid nitrogen cooling assembly incorporating a liquid detector which feeds back to control the nitrogen supply is disclosed. A pressure-controlled nitrogen source (e.g., a dewar) feeds liquid nitrogen to a heat exchanger mounted to a differential scanning calorimetry (DSC) cell. The DSC cell is cooled as liquid nitrogen in the heat exchanger contacting the cell is vaporized into nitrogen gas. The exhaust (nitrogen gas and, occasionally, nitrogen liquid) is fed to a liquid detection/evaporator assembly. If liquid nitrogen is detected in the exhaust by the liquid detection/evaporator assembly, an indication is fed back using a liquid detection feedback loop to a pressure control device. The pressure control device reduces the amount of pressure on the nitrogen source in order to eliminate liquid in the exhaust. When there is liquid in the exhaust, the liquid detection/evaporator assembly also collects and vaporizes the exhaust liquid so that it can be properly vented to atmosphere in gas form. When liquid is no longer detected in the exhaust, the pressure control device increases the pressure on the liquid nitrogen source until liquid is detected in the exhaust. Subsequent cycles control pressure in this manner to keep the heat exchanger full of liquid nitrogen. Though, US'367 discloses about an invention that offers effective cooling and introduces safety concerns associated with the use of liquid nitrogen, such as the risk of asphyxiation and the need for specialized handling and storage. Moreover, the complexity of the liquid detection and pressure control mechanisms lead to operational challenges, making the system less user-friendly for laboratory personnel. In addition, the need for constant monitoring of liquid nitrogen levels and potential vaporization issues hinders continuous operation, limiting its practicality for prolonged experimental setups.

[0008] Conventionally, many methods are available for maintaining temperature for laboratory reactions. However, both of the cited inventions exhibit significant drawbacks that limit their effectiveness in laboratory applications. The systems mentioned herein relies on traditional refrigeration methods, which are bulky, less efficient, and consume more power, making them less suitable for environments where space and energy conservation are critical. Also, the system introduces safety concerns related to the handling of materials, which require specialized knowledge and infrastructure, thereby complicating operational procedures. The need for constant monitoring and the risk of operational failures due to pressure control mechanisms add further complexity, making the cited inventions less user-friendly.

[0009] In order to overcome the aforementioned drawbacks, there exists a need in the art to develop a more efficient and user-friendly device for temperature maintenance in laboratory settings. The developed device should offer precise temperature control while minimizing power consumption and physical footprint, ensuring this is suitable for a variety of experimental conditions. Additionally, the device should enhance safety by eliminating the risks associated with handling cryogenic materials, providing a straightforward operational interface that allows users to easily set and monitor desired temperatures, thereby improving the reliability and efficiency of laboratory experiments.

OBJECTS OF THE INVENTION

[0010] The principal object of the present invention is to overcome the disadvantages of the prior art.

[0011] An object of the present invention is to develop a device that aims to maintain a stable and accurate temperature where the reaction takes place, which is crucial for ensuring optimal conditions and reproducibility in various experiments.

[0012] Another object of the present invention is to develop a device that is capable of allowing users to easily set and adjust the desired temperature, thus enhancing accessibility and efficiency in laboratory settings.

[0013] Another object of the present invention is to develop a device that is capable of minimizing heat exchange with the external environment, ensuring that the internal conditions remain stable and unaffected by external temperature fluctuations.

[0014] Another object of the present invention is to develop a device that efficiently provides cooling and heating as required for laboratory reactions, ensuring rapid response to temperature changes and maintaining the specified conditions.

[0015] Another object of the present invention is to develop a device that separates the cooling and heating elements which helps to prevent cross-contamination of temperature effects, thereby improving overall performance and reliability during operation.

[0016] Another object of the present invention is to develop a device that is capable of ensuring optimal airflow, which aids in achieving uniform temperature distribution throughout and enhances the efficiency of reactions.

[0017] Yet another object of the present invention is to develop a device that is capable of allowing for continuous monitoring temperature, and if discrepancies arise, the device automatically regulates the cooling or heating mechanisms to align with user-defined settings.

[0018] The foregoing and other objects, features, and advantages of the present invention will become readily apparent upon further review of the following detailed description of the preferred embodiment as illustrated in the accompanying drawings.

SUMMARY OF THE INVENTION

[0019] The present invention relates to a Peltier-based temperature maintenance device for laboratory reactions that aids in accurate regulation of temperature settings based on user input while employing thermal management techniques to effectively dissipate heat and circulate cold air, thereby enhancing the safety and reliability of laboratory procedures.

[0020] According to an embodiment of the present invention, a Peltier-based temperature maintenance device for laboratory reactions, comprising a cuboidal body supported by multiple legs, allowing for stable placement on a fixed surface. The body includes a lid for easy access to a chamber where a reaction vessel is placed on a metallic net. A user is able to set the desired temperature using a rotatable knob, which, along with an integrated microcontroller, detects the knob's position to establish the target temperature. The inner walls of the chamber are insulated with Styrofoam to minimize heat exchange with the environment. A Peltier module installed within the device has a cold side that provides the necessary cooling effect and a hot side that dissipates heat externally. A protection plate separates these sides to enhance efficiency. Two motorized fans, one on the cold side and one on the hot side are activated by the microcontroller to circulate cold air within the chamber and expel hot air, respectively. A thermistor continuously monitors the chamber's temperature, and if discrepancies are detected, the microcontroller adjusts the voltage supplied to the Peltier module to maintain the user-defined temperature. Power is supplied through a cord connected to an AC-DC converter, ensuring all components receive the required DC power for operation.

[0021] While the invention has been described and shown with particular reference to the preferred embodiment, it will be apparent that variations might be possible that would fall within the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0022] These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings where:
Figure 1 illustrates a perspective view of a Peltier-based temperature maintenance device for laboratory reactions;
Figure 2 illustrates an inner view of the proposed device; and
Figure 3 illustrates a block diagram of the proposed device.

DETAILED DESCRIPTION OF THE INVENTION

[0023] The following description includes the preferred best mode of one embodiment of the present invention. It will be clear from this description of the invention that the invention is not limited to these illustrated embodiments but that the invention also includes a variety of modifications and embodiments thereto. Therefore, the present description should be seen as illustrative and not limiting. While the invention is susceptible to various modifications and alternative constructions, it should be understood, that there is no intention to limit the invention to the specific form disclosed, but, on the contrary, the invention is to cover all modifications, alternative constructions, and equivalents falling within the spirit and scope of the invention as defined in the claims.

[0024] In any embodiment described herein, the open-ended terms "comprising," "comprises," and the like (which are synonymous with "including," "having" and "characterized by") may be replaced by the respective partially closed phrases "consisting essentially of," consists essentially of," and the like or the respective closed phrases "consisting of," "consists of, the like.

[0025] As used herein, the singular forms "a," "an," and "the" designate both the singular and the plural, unless expressly stated to designate the singular only.

[0026] The present invention relates to a Peltier-based temperature maintenance device for laboratory reactions that facilitates rapid adjustments of temperature, incorporates improved airflow for better temperature distribution, and features continuous monitoring for maintaining a safe and user-friendly environment for conducting sensitive chemical reactions in laboratory.

[0027] Referring to Figure 1 and 2, a perspective view of a Peltier-based temperature maintenance device for laboratory reactions and an inner view of the proposed device are illustrated, comprising a cuboidal body 101 attached with a plurality of legs 102 for providing a support to the body 101 over a fixed surface, mouth portion of the body 101 is attached with a lid 103, a rotatable knob 104 configured on the body 101, a power cord 105 is configured with the body 101, a metallic net 201 arranged within the body 101, the module is having a first side 202 for providing cooling effect to the vessel and a second side 203 for removing heat from the chamber, a first motorized fan 204 installed with the first side 202 of Peltier module, a second motorized fan 205 configured with the second side 203 of Peltier module, a protection plate 206 is incorporated within the chamber for separating the first side 202 from the second side 203, inner walls of the chamber are fabricated with Styrofoam 207 and a thermistor 208 installed within the chamber.

[0028] The device disclosed herein includes a cuboidal body 101 that serves as the main structural component which is developed to provide robust support and a stable environment for laboratory reactions. The body 101 is constructed from durable materials, such as high-quality ABS plastic or aluminum, the body 101 ensures thermal resistance and mechanical stability, which are crucial for maintaining the integrity. The dimensions of the cuboidal structure are optimized to house various sizes of reaction vessels, making this versatile for different laboratory applications.

[0029] The base of the cuboidal body 101 is equipped with a plurality of legs 102 that elevate the body 101 above the fixed surface, providing stability and preventing direct contact with potentially hot or cold surfaces. These legs 102 are designed with rubber or silicone tips to enhance grip and reduce vibrations, ensuring that the device remains stationary during operation. The height of the legs 102 is carefully calculated to create sufficient airflow underneath the device, which aids in heat dissipation and overall performance.

[0030] A chamber is housed within the body 101 that is facilitated by a well-fitting lid 103 that securely attaches to the mouth portion of the cuboidal body 101. The lid 103 is developed for ease of use featuring a simple hinge mechanism that allows users to open and close it effortlessly. When the lid 103 is lifted, users easily place or remove reaction vessels, which are positioned on a metallic net 201 located within the chamber. The reaction vessel serves as the container where reactants are mixed and transformed into products under controlled conditions. Typically made from materials such as glass, stainless steel, or specialized polymers, the choice of vessel depends on factors like temperature, pressure, and the chemical nature of the substances involved. These vessels are developed to withstand specific reaction conditions, such as high temperatures or corrosive environments. Proper selection and handling of the reaction vessel are vital to ensure safety, efficiency, and the integrity of the experimental results.

[0031] The metallic net 201 mentioned herein is made of stainless steel, chosen for its excellent corrosion resistance, strength, and ability to withstand varying temperatures. The stainless steel net 201 provides a sturdy support surface for the reaction vessels, ensuring they remain securely in place during the experimental process. The design of the net 201 allows for optimal air circulation and thermal transfer between the cooling and heating elements of the device, promoting efficient temperature maintenance. The chamber itself is carefully insulated to prevent heat transfer with the external environment, typically using materials like Styrofoam 207 on the inner walls. This insulation works in conjunction with the metallic net 201, which helps distribute the cooling effect evenly across the reaction vessel's base.

[0032] A rotatable knob 104 is situated on the exterior of the cuboidal body 101, enabling users to easily set their desired temperature. This knob 104 is a critical interface to allow for intuitive interaction and precise control. When the user turns the knob 104, the action is detected by an inbuilt microcontroller, which translates the position of the knob 104 into a specific temperature setting. This functionality is essential for enabling users to customize the thermal environment within the chamber according to the requirements of their particular laboratory reactions.

[0033] The rotatable knob 104 is developed for ergonomic use that features a textured or knurled surface to ensure a firm grip. This design consideration minimizes the risk of slippage, especially in laboratory settings where hands are gloved or wet. The knob 104 has clear markings or a digital readout indicating the temperature range, providing users with immediate feedback on the current setting. Once the knob 104 is adjusted, the user also activates the device using a switch integrated into the body 101. This switch serves as an on/off mechanism, ensuring that the device is powered up and ready for operation.

[0034] As the user turns the knob 104, the device generates a corresponding voltage or digital signal that indicates the desired temperature setting. This signal is transmitted to the microcontroller, which continuously monitors the knob's position and adjusts the output to maintain the specified temperature within the chamber. Upon activation, the microcontroller begins to monitor the position of the knob 104 in real-time, converting the analog movement into a digital signal that represents the desired temperature. This precise detection allows for quick and accurate adjustments to the heating or cooling elements within the chamber, facilitating a responsive method that adapt to changes in user requirements.

[0035] The chamber's inner walls are insulated properly and are fabricated with Styrofoam 207. The Styrofoam 207 material is chosen for its excellent insulating properties, effectively preventing external heat from influencing the internal environment. Styrofoam's low thermal conductivity ensures that the temperature fluctuations outside the device do not significantly affect the temperature maintained within the chamber. By minimizing heat exchange with the surroundings, the Styrofoam 207 insulation enhances the efficiency of the device, allowing to operate more effectively in achieving and maintaining the user-defined temperature.

[0036] Users easily set the desired temperature and the robust insulation works to preserve that setting against external variables. This synergy between user control and environmental stability is fundamental to the device's effectiveness, allowing for consistent and reliable performance in various laboratory applications. As a result, researchers conduct experiments with confidence, knowing that the temperature conditions are precisely controlled and maintained throughout the duration of their reactions.

[0037] A Peltier module is installed within the body 101 to facilitate precise thermal management within the chamber where laboratory reactions take place. This module operates based on the thermoelectric principle, which involves the creation of a temperature differential when electrical current flows through it. The Peltier module features two distinct sides, such as, the cold side and the hot side. The cold side is tasked with absorbing heat from the reaction vessel placed within the chamber, thereby providing the necessary cooling effect to maintain the user-defined temperature. In contrast, the hot side dissipates the absorbed heat into the external environment, effectively removing it from the chamber.

[0038] The operation of the Peltier module is controlled by the microcontroller, which activates the module based on the temperature settings specified by the user through the rotatable knob 104. When the desired temperature is set, the microcontroller continuously monitors the actual temperature within the chamber via a thermistor 208. If the measured temperature deviates from the user-defined setting, the microcontroller adjusts the voltage supplied to the Peltier module accordingly, modulating its cooling or heating effect to bring the chamber temperature back in line with the desired level. This dynamic response is essential for maintaining the stability and consistency required for accurate laboratory experiments.

[0039] To further enhance the efficiency of the Peltier module, a protection plate 206 is incorporated within the chamber. This plate 206 serves a dual purpose as the plate 206 physically separates the cold side from the hot side, preventing thermal interference that compromise the effectiveness of the cooling process. By ensuring that the two sides do not come into direct contact, the protection plate 206 maximizes the heat exchange efficiency, allowing the cold side to effectively lower the temperature of the reaction vessel without being affected by the heat generated on the hot side. This design helps to contain any moisture or condensation that arise during the cooling process, protecting both the Peltier module and the sensitive reaction components from potential damage.

[0040] The device features two distinct fans: a first motorized fan 204 is positioned on the cold side of the Peltier module, while the second motorized fan 205 is located on the hot side. Each fan is activated and controlled by the microcontroller, which ensures optimal performance based on the current thermal conditions and user-defined settings. The first motorized fan 204 operates in conjunction with the cold side of the Peltier module, which absorbs heat from the reaction vessel within the chamber. As the Peltier module cools this side, the fan circulates the cold air generated around the vessel, promoting uniform temperature distribution throughout the chamber. This circulation is critical as this helps to prevent localized cooling effects, ensuring that all parts of the reaction vessel experience consistent thermal conditions. The microcontroller monitors the temperature inside the chamber and adjust the fan's speed accordingly. For example, if the temperature within the chamber rises above the user-defined threshold, the microcontroller increases the fan speed to enhance the circulation of cold air, facilitating a more rapid return to the desired temperature.

[0041] Conversely, the second motorized fan 205 is dedicated to the hot side of the Peltier module, which expels the heat absorbed from the reaction vessel into the external environment. This fan aids in maintaining the efficiency of the Peltier module itself by effectively dissipating the heat as this prevents the module from overheating and ensures it operates within its optimal temperature range. Similar to the cold-side fan, this fan is also controlled by the microcontroller. If the internal temperature rises or the hot side's temperature exceeds the certain limit, the microcontroller adjusts the fan's operation either by increasing its speed to remove more heat quickly or by turning it off during periods of low demand, thereby conserving energy and reducing wear on the device.

[0042] When the reaction vessel generates heat during experiments, the cold-side fan efficiently distributes cold air, while the hot-side fan works diligently to remove excess heat. This dual-action mechanism creates a balanced thermal environment, preventing the device from becoming thermally saturated and ensuring that the reactions within the chamber occur under stable and controlled conditions. Moreover, the fans' ability to adaptively respond to real-time temperature data allows the device to operate with high efficiency, reducing the energy consumption while maintaining optimal performance.

[0043] A thermistor 208 is incorporated within the chamber provides essential feedback to ensure that the internal chamber maintains the user-defined temperature. The thermistor 208 continuously monitors the temperature of the environment surrounding the reaction vessel, allowing for real-time data acquisition that is critical for effective thermal management. The thermistor 208 provide accurate and reliable temperature readings. For example, the thermistor 208 changes its resistance with temperature fluctuations as the temperature increases, its resistance decreases, and vice versa. The microcontroller reads this change in resistance and converts it into the temperature value through predefined calibration data.

[0044] Once the thermistor 208 is installed within the chamber, this begins to monitor the thermal environment continuously. The microcontroller is pre-fed to read the temperature data at regular intervals, creating a feedback loop that allows for ongoing adjustments. When the user defines a target temperature using the rotatable knob 104, the microcontroller stores this value as a reference. During operation, if the thermistor 208 detects that the current temperature within the chamber deviates from this user-defined setting, the microcontroller takes immediate action to rectify the situation.

[0045] For example, if the temperature within the chamber rises above the set point, the microcontroller regulates the voltage supplied to the Peltier module to increase its cooling effect. By decreasing the voltage, the cooling capacity of the module is enhanced, allowing this to absorb more heat from the reaction vessel and restore the desired temperature. Conversely, if the temperature drops below the target, the microcontroller adjusts the voltage to increase the heating effect of the Peltier module, promoting a rise in temperature until this aligns with the user-defined setting.

[0046] This feedback is crucial for maintaining a stable and consistent environment for laboratory reactions, which often require precise temperature conditions to ensure accurate and reproducible results. The rapid response of the thermistor 208, coupled with the microcontroller's ability to adjust the Peltier module's output, enables the device to effectively manage temperature fluctuations that arise due to exothermic or endothermic reactions occurring within the vessel. Furthermore, the reliability of the thermistor 208 is paramount, as any inaccuracies lead to incorrect temperature settings and potentially compromise experimental outcomes.

[0047] A power cord 105 is configured with the body 101 to connect the device to an external power socket. This cord 105 is developed to handle the required voltage and current, ensuring a stable and reliable connection to the electrical grid. Typically constructed with durable, heat-resistant materials, the power cord 105 is engineered to withstand the conditions of the laboratory environment, where exposure to heat, spills, and wear and tear are common. Once plugged into the external power source, the power cord 105 facilitates the flow of alternating current (AC) to the device. However, many of the internal components, such as the Peltier module, microcontroller, and motorized fans, require direct current (DC) for optimal operation. To address this discrepancy, the device incorporates an AC-DC converter that transforms the incoming AC power into the appropriate DC voltage levels needed for the device's functionality.

[0048] The AC-DC converter consists of several key elements, including a transformer, rectifier, and voltage regulator. The transformer steps down the voltage from the mains supply to a safer, more manageable level suitable for the device. Following this, the rectifier converts the AC voltage into pulsating DC voltage. This process is usually achieved through diode configurations that allow current to flow in only one direction, effectively blocking the negative half of the AC cycle. The result is a form of DC that, while not yet stable is smoothed out with the help of capacitors. These capacitors store energy and release it steadily, reducing voltage fluctuations and providing a more stable DC output.

[0049] After rectification, the voltage regulator further refines the DC output, ensuring it meets the specific voltage and current requirements of the various components within the device. This regulation is vital for maintaining consistent performance and preventing damage to sensitive electronic parts. Once the AC power is converted to stable DC, this is distributed throughout the device. The microcontroller receives the DC voltage to manage its operations, including processing user inputs, regulating temperature settings, and controlling the Peltier module and fans. The motorized fans also rely on this DC supply to operate, allowing for effective circulation of air within the chamber.

[0050] For example, considering a scenario involving a delicate organic synthesis reaction that is highly temperature-sensitive. The researcher places the reaction vessel containing the reactants inside the device's insulated chamber, which is supported on the metallic net 201 to allow for even heat distribution. Before starting the reaction, the researcher uses the rotatable knob 104 on the device to set the desired temperature, which is lower than ambient temperature to prevent unwanted side reactions or degradation of the reactants. Once the device is powered on via the accessible switch, the inbuilt microcontroller detects the position of the knob 104 and sets the target temperature accordingly. The chamber's walls, lined with Styrofoam 207, effectively insulate it from external temperature fluctuations, ensuring that the internal environment remains stable. As the reaction progresses, this generates heat, potentially raising the temperature above the set point. The thermistor 208 continuously monitors the chamber's temperature, providing real-time feedback to the microcontroller. If the sensor detects a rise in temperature, the microcontroller activates the Peltier module's cold side, which begins to absorb heat from the reaction vessel. Simultaneously, the first motorized fan 204 circulates the cold air throughout the chamber, ensuring uniform cooling.

[0051] If the temperature exceeds the user-defined limit, the microcontroller adjusts the voltage supplied to the Peltier module, enhancing its cooling capacity to bring the temperature back down quickly. Meanwhile, the hot side of the Peltier module expels excess heat into the external environment, aided by the second motorized fan 205, which dissipates the hot air effectively. This rapid response allows the researcher to maintain precise thermal conditions, critical for the success of temperature-sensitive reactions. For example, if the reaction is exothermic, the device continuously regulate temperature to prevent overheating, ensuring the desired reaction pathway is followed without unwanted by-products (as illustrated in Figure 3).

ADVANTAGES

• Precision: The ability to deliver accurate temperature control, crucial for delicate reactions that require specific thermal conditions. This precision ensures that even minor temperature variations, which impact the outcome of sensitive experiments, are effectively managed. Researchers confidently conduct experiments that demand stringent temperature regulation without the fear of compromising their results.

• Applicability to Non-Aqueous Reactions: The device features a compact design that occupies significantly less space. This space-efficient construction is particularly advantageous in laboratory environments where counter space is limited. Researchers maximize their workspace while still benefiting from effective temperature control, making it easier to integrate the device into existing setups.

• Quiet Operation: The Peltier-based approach operates with minimal noise, creating a more conducive working environment. This is especially beneficial in laboratories where concentration and focus are essential, allowing researchers to conduct their work without the distraction of loud machinery.

• Fast Response: The device is developed to respond rapidly to changing thermal loads, ensuring that temperature adjustments are made swiftly and efficiently. This fast response capability is particularly important during experiments that experience sudden temperature fluctuations due to exothermic or endothermic reactions. By quickly adapting to these changes, the device helps maintain stability and consistency in experimental conditions.

• Sub-Ambient Cooling: The Peltier module has the ability to achieve sub-ambient cooling, allowing for temperatures that drop below the surrounding ambient temperature. This capability opens up new possibilities for experiments that require extremely low temperatures, enabling researchers to conduct studies that were previously challenging or impossible with standard cooling methods.

• User-Friendly Interface: The device features a clear display for real-time temperature monitoring, allowing users to easily observe the current conditions within the chamber. The inclusion of the control knob 104 for temperature selection further simplifies the user experience, enabling researchers to make adjustments effortlessly. This intuitive interface ensures that users focus on their experiments rather than struggling with complex controls.

[0052] The present invention works best in the following manner, where the cuboidal body 101 as disclosed in the invention is attached with the plurality of legs 102 for providing the support to body 101 over the fixed surface as disclosed in the proposed invention. Initially, the device operates by utilizing the microcontroller to regulate the temperature within the chamber that houses the reaction vessel. When the user activates the device via the switch and sets the desired temperature using the rotatable knob 104, the microcontroller detects the knob's position to determine the target temperature. The inner walls of the chamber, insulated with Styrofoam 207, help maintain thermal stability by preventing heat exchange with the external environment. The Peltier module, comprising the cold side and the hot side, is activated based on the microcontroller's input. The thermistor 208 continuously monitors the chamber's temperature, if the temperature diverges from the user-defined setting, the microcontroller adjusts the voltage supplied to the Peltier module to restore the desired temperature. Then, the motorized fan on the cold side circulates cold air within the chamber, while the fan on the hot side dissipates excess heat to the surroundings. Power is supplied through the power cord 105 connected to the AC-DC converter, which ensures that all device components receive the necessary DC power for optimal performance.

[0053] Although the field of the invention has been described herein with limited reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternate embodiments of the invention, will become apparent to persons skilled in the art upon reference to the description of the invention. , Claims:1) A Peltier-based temperature maintenance device for laboratory reactions, comprising:

i) a cuboidal body 101 attached with a plurality of legs 102 for providing a support to said body 101 over a fixed surface, wherein mouth portion of said body 101 is attached with a lid 103 that is accessed by a user to access said mouth portion in view of placing a reaction vessel in a chamber housed within said body 101 on a metallic net 201 arranged within said body 101;
ii) a rotatable knob 104 configured on said body 101 that is accessed by said user for setting temperature to be maintained within said body 101, upon turning on said device by accessing a switch crafted on said body 101, wherein an inbuilt microcontroller detect position of said knob 104 to determine user-defined temperature to be maintained within said chamber;
iii) a Peltier module installed within said body 101 that is activated by said microcontroller for maintaining said user-defined temperature within said chamber, wherein said module is having a first side 202 for providing cooling effect to said vessel and a second side 203 for removing heat from said chamber to external surroundings;
iv) a first motorized fan 204 installed with said first side 202 of Peltier module that is activated by said microcontroller for circulating cold air in said chamber, wherein a second motorized fan 205 configured with said second side 203 of Peltier module is activated by said microcontroller for dissipating hot air in external surroundings; and
v) a thermistor 208 installed within said chamber for detecting temperature of said chamber, wherein in case said detected temperature mismatches with said user-defined temperature, said microcontroller actuates regulates voltage supplied to said Peltier module for maintaining said user-defined temperature within said chamber.

2) The device as claimed in claim 1, wherein said first side 202 is cold side and said second side 203 is hot side.

3) The device as claimed in claim 1, wherein a protection plate 206 is incorporated within said chamber for separating said first side 202 from said second side 203.

4) The device as claimed in claim 1, wherein inner walls of said chamber are fabricated with Styrofoam 207 for preventing heat from external surroundings to said chamber.

5) The device as claimed in claim 1, wherein a power cord 105 is configured with said body 101 that is inserted in an external power socket for allowing powder supply to said device.

6) The device as claimed in claim 1 and 5, wherein an AC (Alternating)-DC (Direct Current) converter is paired with said power cord 105 for converting AC from said power supply to DC current provided to all components of said device.

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