Water-cooled temperature control device of improved isothermal micro calorimeter
By introducing a water-cooled temperature control device into the isothermal microcalorimeter, and utilizing heat exchange plates, "S"-shaped heat exchange tubes, and ventilation mechanisms, the problem of untimely heat dissipation of Peltier coolers was solved, thereby improving heat dissipation efficiency and experimental accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI ZHONGKE THERMOMETER TECHNOLOGY CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-24
AI Technical Summary
When using Peltier coolers in existing isothermal microcalorimeters, heat cannot be dissipated from the hot end in time, causing a sharp rise in temperature. External environmental interference affects heat dissipation efficiency and the accuracy of experimental results.
A water-cooled temperature control device is adopted, which connects the heat exchange plate and multiple heat exchange tubes arranged in an "S" shape to the Peltier cooling plate. Combined with the corrugated connecting plate and turbulence formation, the heat exchange area and heat transfer coefficient are increased, and the gas flow is accelerated through the ventilation mechanism to achieve rapid heat dissipation.
This method achieves uniform heat dissipation from the Peltier thermostat, reduces localized overheating, improves heat dissipation efficiency, minimizes the impact of external environmental interference on the experiment, and ensures the accuracy of the experimental results.
Smart Images
Figure CN224553170U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of isothermal microcalorimeter technology, and in particular to a water-cooled temperature control device for an improved isothermal microcalorimeter. Background Technology
[0002] An isothermal microcalorimeter is an instrument used to measure the thermal effect of a substance under constant temperature conditions. By precisely controlling the temperature and collecting heat flow data, it analyzes the thermal reaction characteristics of the substance.
[0003] When testing samples using an isothermal microcalorimeter, a Peltier cooler is needed to regulate the temperature inside the sample chamber, reducing temperature fluctuations and improving the accuracy of experimental results. During operation, the Peltier cooler transfers heat from the cold end to the hot end. However, if the heat from the hot end cannot be dissipated in time, the temperature will rise sharply, reducing the cooling effect or even causing it to fail. Air cooling is used to remove heat from the hot end. The hot end of the air-cooled chamber directly exchanges heat with the ambient air. When the ambient temperature fluctuates (such as when the laboratory air conditioner starts and stops, or when ventilation conditions change), the heat dissipation efficiency of the Peltier cooler changes significantly, resulting in lower operating efficiency and temperature fluctuations inside the sample chamber, affecting the experimental results.
[0004] Therefore, it is necessary to provide a new, improved water-cooled temperature control device for isothermal microcalorimeters to solve the above problems. Utility Model Content
[0005] The technical problem solved by this utility model is to provide an improved water-cooled temperature control device for an isothermal microcalorimeter that facilitates rapid heat dissipation and reduces interference from the external environment.
[0006] To solve the above-mentioned technical problems, the improved water-cooled temperature control device for the isothermal micro calorimeter provided by this utility model includes: a heat exchange plate, which is fixed to the bottom end of a Peltier cooler, the Peltier cooler being installed inside the isothermal micro calorimeter; a main pipe is installed at the center of the side wall of the heat exchange plate, and S-shaped heat exchange tubes are symmetrically installed on both sides of the main pipe, with corrugated connecting plates installed on the surface of the heat exchange tubes, and the connecting plates abutting against the bottom surface of the Peltier cooler; a storage mechanism is installed at the bottom of the isothermal micro calorimeter, the storage mechanism being connected to the heat exchange tubes; a ventilation mechanism is installed at the top of the storage mechanism, the ventilation mechanism including a rotating shaft, multiple rotating plates being fixedly connected to the side wall of the rotating shaft, the rotating plates being rotatably connected to the interior of the storage mechanism; impellers are installed at both ends of the rotating shaft, the impellers being rotatably connected to the interior of the cylinder; an air inlet is installed at the center of the side wall of the cylinder, and an air outlet pipe is installed at an angle on the side wall of the cylinder.
[0007] Preferably, the isothermal microcalorimeter has a sample chamber inside, and a Peltier cooling plate is installed at the bottom of the sample chamber.
[0008] Preferably, the storage mechanism includes a water tank, which is fixed to the bottom of the isothermal microcalorimeter. A water pump is installed inside the water tank, and an inlet pipe is installed on the side wall of the water pump. The top end of the inlet pipe is connected to the main pipe.
[0009] Preferably, plate heat exchangers are symmetrically installed on the sidewalls of the water tank. Connecting pipes and drain pipes are respectively installed at both ends of the plate heat exchangers. The drain pipes are connected to the heat exchange pipes, and the connecting pipes with "L"-shaped sidewalls are connected to the interior of the water tank.
[0010] Preferably, the heat exchange tube is a hollow rectangle, and multiple spiral irons are installed inside the heat exchange tube.
[0011] Preferably, a funnel-shaped fixing block is installed inside the top of the water inlet pipe, and the rotating shaft and the rotating plate are arranged above the fixing block, and the rotating shaft and the rotating plate are rotatably connected to the inside of the water inlet pipe.
[0012] Preferably, the air outlet is aligned with the corner of the heat exchange plate, and the air inlet is aligned with the center of the interior of the heat exchange plate.
[0013] Compared with related technologies, the water-cooled temperature control device for the improved isothermal micro calorimeter provided by this utility model has the following beneficial effects: This invention provides a water-cooled temperature control device for an improved isothermal micro calorimeter. When dissipating heat from the Peltier cooler, cold water flows through the main pipe into the interior of multiple heat exchange tubes. These heat exchange tubes are distributed in an "S" shape on the bottom surface of the Peltier cooler, achieving uniform heat dissipation and preventing localized overheating. The heat exchange tubes are rectangular to reduce dead angles and facilitate rapid heat removal from the bottom surface of the Peltier cooler by water flow. A corrugated connecting plate is installed on the surface of the heat exchange tubes. This connecting plate contacts the Peltier cooler, increasing the heat exchange area. Furthermore, the connecting plate creates turbulence at the top of the heat exchange tube, significantly improving the heat transfer coefficient and heat dissipation efficiency by disrupting the boundary layer and forming secondary flow. During the movement of the cold water, the cold water drives the rotating plate and the rotating shaft to rotate rapidly. The impeller rotates rapidly inside the cylinder, generating suction inside the air inlet. This draws the gas from inside the heat exchange plate into the cylinder and then rapidly discharges it through the air outlet pipe, increasing the gas flow velocity inside the heat exchange plate and further improving the cooling effect. The air outlet pipe is positioned at the corner of the heat exchange plate, so the air blown out from the outlet pipe travels around the corner before dispersing, increasing the air movement range. The air inlet is positioned at the center of the heat exchange plate, drawing air from the middle of the plate into the cylinder, further increasing the gas flow velocity and range inside the heat exchange plate. This facilitates the transfer of heat emitted by the Peltier cooling element into the heat exchange tube, improving the cooling effect on the Peltier cooling element, and the external environment does not affect the heat dissipation of the Peltier cooling element. Attached Figure Description
[0014] Figure 1 A schematic diagram of a preferred embodiment of the water-cooled temperature control device for the improved isothermal micro calorimeter provided by this utility model. Figure 2 for Figure 1 The top view of the heat exchanger plate structure shown; Figure 3 for Figure 2 The image shows a side view of the internal structure of the main pipe. Figure 4 for Figure 3 The diagram shows the structure of the water inlet pipe; Figure 5 for Figure 4 The diagram shows a top view of the inlet pipe structure.
[0015] The diagram is labeled as follows: 1. Isothermal micro calorimeter; 11. Sample chamber; 2. Peltier cooler; 3. Heat exchange plate; 31. Main pipe; 32. Heat exchange tube; 33. Spiral iron; 34. Connecting plate; 4. Storage mechanism; 41. Water tank; 42. Water pump; 43. Water inlet pipe; 44. Connecting pipe; 45. Plate heat exchanger; 46. Drain pipe; 5. Ventilation mechanism; 51. Fixing block; 52. Rotating shaft; 53. Rotating plate; 54. Impeller; 55. Cylinder; 56. Air outlet pipe; 57. Air inlet. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0017] Please see Figures 1 to 5 , Figure 1 A schematic diagram of a preferred embodiment of the water-cooled temperature control device for the improved isothermal micro calorimeter provided by this utility model. Figure 2 for Figure 1 The top view of the heat exchanger plate structure shown; Figure 3 for Figure 2 The image shows a side view of the internal structure of the main pipe. Figure 4 for Figure 3 The diagram shows the structure of the water inlet pipe; Figure 5 for Figure 4 The diagram shows a top view of the inlet pipe structure. A water-cooled temperature control device for an improved isothermal micro calorimeter includes a heat exchange plate 3, which is fixed to the bottom end of a Peltier cooler 2. The Peltier cooler 2 is installed inside the isothermal micro calorimeter 1. A main pipe 31 is installed at the center of the side wall of the heat exchange plate 3. "S"-shaped heat exchange tubes 32 are symmetrically installed on both sides of the main pipe 31. A corrugated connecting plate 34 is installed on the surface of each heat exchange tube 32, and the connecting plate 34 abuts against the bottom surface of the Peltier cooler 2. When dissipating heat from the Peltier cooler 2, a water pump 42 operates, causing cold water to flow through the main pipe 31 into the multiple heat exchange tubes 32. Inside, multiple heat exchange tubes 32 are distributed in an "S" shape on the bottom surface of the Peltier cooler 2 to achieve uniform heat dissipation and avoid excessive local temperature. The heat exchange tubes 32 are rectangular to reduce dead angles and facilitate water flow to quickly remove heat from the bottom surface of the Peltier cooler 2. A corrugated connecting plate 34 is installed on the surface of the heat exchange tubes 32. The connecting plate 34 contacts the Peltier cooler 2 to increase the heat exchange area. The connecting plate 34 forms turbulence at the top of the heat exchange tubes 32, which significantly improves the heat transfer coefficient and heat dissipation efficiency by disrupting the boundary layer and forming secondary flow through the liquid.
[0018] The bottom of the isothermal microcalorimeter 1 is equipped with a storage mechanism 4, which is connected to the heat exchange tube 32. The top of the storage mechanism 4 is equipped with a ventilation mechanism 5, which includes a rotating shaft 52. Multiple rotating plates 53 are fixedly connected to the side wall of the rotating shaft 52, and the rotating plates 53 are rotatably connected to the interior of the storage mechanism 4. Impellers 54 are installed at both ends of the rotating shaft 52, and the impellers 54 are rotatably connected to the interior of the cylinder 55. An air inlet 57 is installed at the center of the side wall of the cylinder 55, and an air outlet duct 56 is installed at an angle on the side wall of the cylinder 55. During the cold water movement, the cold water drives the rotating plate 53 and the rotating shaft 52 to rotate rapidly. The rotating shaft 52 drives the impeller 54 to rotate rapidly inside the cylinder 55, generating suction inside the air inlet 57. This draws the gas inside the heat exchange plate 4 into the cylinder 55 and then rapidly discharges it through the air outlet 56, increasing the gas flow velocity inside the heat exchange plate 3 and further improving the cooling effect. The air outlet 56 is aligned with the corner of the heat exchange plate 3. The air blown out from the air outlet 56 hits the corner of the heat exchange plate 3 and then disperses to the surroundings, increasing the air movement range. The air inlet 57 is aligned with the center of the interior of the heat exchange plate 3 (as shown in the attached figure). Figure 5 As shown, the air in the middle of the heat exchange plate 3 is carried into the interior of the cylinder 55, further increasing the gas flow speed and range inside the heat exchange plate 3. This facilitates the transfer of heat emitted by the Peltier cooling plate 2 into the heat exchange tube 3, thereby improving the cooling effect on the Peltier cooling plate 1.
[0019] The isothermal microcalorimeter 1 has a sample chamber 11 inside, and a Peltier cooler 2 is installed at the bottom of the sample chamber 11. The Peltier cooler 2 is used to reduce the temperature fluctuation inside the sample chamber 11 and improve the accuracy of the experimental results.
[0020] The storage mechanism 4 includes a water tank 41, which is fixed to the bottom of the isothermal microcalorimeter 1. A water pump 42 is installed inside the water tank 41, and an inlet pipe 43 is installed on the side wall of the water pump 42. The top end of the inlet pipe 43 is connected to the main pipe 31. A funnel-shaped fixing block 51 is installed inside the top end of the inlet pipe 43. A rotating shaft 52 and a rotating plate 53 are arranged above the fixing block 51, and the rotating shaft 52 and the rotating plate 53 are rotatably connected to the inside of the inlet pipe 43. In order to facilitate the operation of the water pump 42, cold water inside the water tank 41 is quickly transported into the inside of the inlet pipe 43. The water enters the inside of the fixing block 51, and the funnel-shaped fixing block 51 accelerates the water flow. The accelerated water flows towards the rotating plate 53, thereby driving the rotating plate 53 and the rotating shaft 52 to rotate rapidly.
[0021] Plate heat exchangers 45 are symmetrically installed on the side wall of the water tank 41. Connecting pipes 44 and drain pipes 46 are respectively installed at both ends of the plate heat exchangers 45. The drain pipe 46 is connected to the heat exchange tube 32, and the connecting pipe 44, which has an "L"-shaped side wall, is connected to the interior of the water tank 41. The water that absorbs heat inside the heat exchange tube 32 enters the interior of the two plate heat exchangers 45 through the connecting pipes 44. The hot water is diverted and then dissipates heat, which facilitates cooling. The heat in the water is dissipated into the air through the plate heat exchangers 45. The water with the reduced temperature enters the top interior of the water tank 41 through the connecting pipes 44. After mixing with the water inside the water tank 41 for a period of time, it is then pumped away by the water pump 42, so that the water temperature inside the water tank 41 and the inlet pipe 43 is kept consistent.
[0022] The heat exchange tube 32 is a hollow rectangle, and multiple spiral irons 33 are installed inside the heat exchange tube 32. The spiral irons 33 generate turbulence inside the heat exchange tube 32, increase the heat transfer coefficient of the water inside the heat exchange tube 32, and quickly remove the heat of the flowing gas inside the heat exchange plate 3, thereby reducing the temperature of the air inside the heat exchange plate 3. This facilitates the absorption of the heat emitted by the Peltier cooling plate 2 by the flowing air, further improving the cooling effect of the Peltier cooling plate 2.
[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A water-cooled temperature control device for an improved isothermal micro calorimeter, characterized in that, include: Heat exchange plate (3), the heat exchange plate (3) is fixed at the bottom end of Peltier cooling plate (2), the Peltier cooling plate is installed inside the isothermal microcalorimeter (1); A main pipe (31) is installed in the middle of the side wall of the heat exchange plate (3). S-shaped heat exchange tubes (32) are symmetrically installed on both sides of the main pipe (31). A corrugated connecting plate (34) is installed on the surface of the heat exchange tube (32), and the connecting plate (34) abuts against the bottom surface of the Peltier cooling plate (2). The bottom of the isothermal microcalorimeter (1) is equipped with a storage mechanism (4), which is connected to the heat exchange tube (32); the top of the storage mechanism (4) is equipped with a ventilation mechanism (5). The ventilation mechanism (5) includes a rotating shaft (52), and multiple rotating plates (53) are fixedly connected to the side wall of the rotating shaft (52). The rotating plates (53) are rotatably connected to the interior of the storage mechanism (4). Impellers (54) are installed at both ends of the rotating shaft (52), and the impellers (54) are rotatably connected to the interior of the cylinder (55). An air inlet (57) is installed in the middle of the side wall of the cylinder (55), and an air outlet pipe (56) is installed at an angle on the side wall of the cylinder (55).
2. The water-cooled temperature control device for the improved isothermal micro calorimeter according to claim 1, characterized in that, The isothermal microcalorimeter (1) has a sample chamber (11) inside, and a Peltier cooler (2) is installed at the bottom of the sample chamber (11).
3. The water-cooled temperature control device for the improved isothermal micro calorimeter according to claim 1, characterized in that, The storage mechanism (4) includes a water tank (41), which is fixed to the bottom of the isothermal microcalorimeter (1). A water pump (42) is installed inside the water tank (41), and an inlet pipe (43) is installed on the side wall of the water pump (42). The top end of the inlet pipe (43) is connected to the main pipe (31).
4. The water-cooled temperature control device for the improved isothermal micro calorimeter according to claim 3, characterized in that, Plate heat exchangers (45) are symmetrically installed on the side wall of the water tank (41). Connecting pipes (44) and drain pipes (46) are respectively installed at both ends of the plate heat exchangers (45). The drain pipes (46) are connected to the heat exchange tubes (32), and the connecting pipes (44) with "L"-shaped side walls are connected to the interior of the water tank (41).
5. The water-cooled temperature control device for the improved isothermal micro calorimeter according to claim 1, characterized in that, The heat exchange tube (32) is a hollow rectangle, and multiple spiral irons (33) are installed inside the heat exchange tube (32).
6. The water-cooled temperature control device for the improved isothermal micro calorimeter according to claim 3, characterized in that, A funnel-shaped fixing block (51) is installed inside the top of the water inlet pipe (43). The rotating shaft (52) and the rotating plate (53) are arranged above the fixing block (51), and the rotating shaft (52) and the rotating plate (53) are rotatably connected to the inside of the water inlet pipe (43).
7. The water-cooled temperature control device for the improved isothermal micro calorimeter according to claim 1, characterized in that, The air outlet pipe (56) is aligned with the corner of the heat exchange plate (3), and the air inlet (57) is aligned with the center of the interior of the heat exchange plate (3).