Gas-liquid double-cooling low-temperature thermostatic bath

Abstract

The utility model belongs to the technical field of temperature control equipment, and particularly relates to a gas-liquid double-cooling low-temperature thermostatic bath which comprises a machine body, a bath body and a refrigeration mechanism, and the bath body and the refrigeration mechanism are located in the machine body. The refrigerating mechanism is connected with a condensate coil pipe in the tank body, the tank body is connected with a liquid inlet and a liquid outlet, and liquid in the tank body circulates or circulates through the liquid inlet and the liquid outlet. A gas coil pipe is further arranged in the tank body, a gas inlet connector and a gas outlet connector are arranged on the side face of the machine body, and gas enters the gas coil pipe through a pipeline and the gas inlet connector and flows out of the gas outlet connector after being cooled by liquid in the tank body. The liquid and gas cooling device can meet the cooling requirements of liquid and gas, is suitable for wider experiment or industrial application scenes, is particularly applied to the working condition that the liquid and the gas are cooperatively cooled, has higher adaptability, can better keep the consistency and the stability of the temperature, and saves time and resources.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature control equipment, and in particular relates to a gas-liquid dual-cooling low-temperature constant temperature bath. Background Art

[0002] Cryogenic thermostatic baths are commonly used as laboratory instruments or refrigeration equipment. Their primary function is to provide a precise, stable low-temperature environment and are widely used in laboratories and industrial production. The core components of a cryogenic thermostatic bath are the refrigeration system and the bath itself, which typically includes a compressor, condenser, evaporator, and expansion valve. The bath itself contains the liquid or medium.

[0003] For example, Chinese utility model patent CN 205236003U discloses a wide-temperature-range low-temperature constant-temperature bath device. The compressor is connected to the condenser, which is connected to the inlet of the distillation column. The liquid outlet at the bottom of the distillation column is connected to a throttle valve and then enters the insertion point of the regenerator. The outlet at the top of the distillation column is connected to the high-pressure inlet of the regenerator, and the high-pressure outlet is connected to the main throttle valve and then enters the evaporator. Low-temperature refrigeration is completed in the evaporator, and the working medium is cooled and lowered. The medium then returns to the low-pressure inlet of the regenerator and the outlet is connected to the heat exchanger at the top of the distillation column. The outlet of the heat exchanger is connected to the compressor suction port, thus completing the entire refrigeration cycle.

[0004] Currently, there are two main ways to use low-temperature constant temperature baths: on the one hand, the temperature of the liquid can be directly adjusted; on the other hand, water can be used as a heat transfer medium to cool or heat the sample or equipment.

[0005] The working process of the above-mentioned low-temperature constant temperature bath is mainly to regulate the temperature of the liquid. If the operating conditions require cooling the liquid and gas at the same time, it is often necessary to add another dedicated gas cooling device, which increases the procurement cost of the equipment and the occupied on-site space. Utility Model Content

[0006] In response to the above-mentioned shortcomings of the existing technology, the present invention aims to solve the problem that traditional low-temperature thermostatic baths mainly cool and cool liquids, which are relatively simple in function and require gas cooling equipment to meet certain working conditions that require cooling of both gas and liquid. The present invention provides a gas-liquid dual-cooling low-temperature thermostatic bath, which is equipped with gas inlet and outlet ports and simultaneously cools the gas through the cooling coil, achieving the function of cooling both gas and liquid, and has a wider range of applications.

[0007] In order to achieve the above purpose, the utility model provides a gas-liquid dual cooling low temperature constant temperature tank, comprising: a body, a tank body, and a refrigeration mechanism, wherein the tank body and the refrigeration mechanism are located in the body.

[0008] The refrigeration mechanism is connected to the condensate coil in the tank body, and the tank body is connected to the liquid inlet and outlet. The liquid in the tank body flows or circulates through the liquid inlet and outlet.

[0009] A gas coil is also provided in the tank body, and an air inlet joint and an air outlet joint are provided on the side of the body. The gas enters the gas coil through the pipeline and the air inlet joint, is cooled by the liquid in the tank body, and then flows out from the air outlet joint.

[0010] According to another embodiment of the present invention or any of the aforementioned embodiments, the low-temperature constant temperature bath further includes a filter, which is installed on the body and connected to the air inlet connector or the air outlet connector through a pipe to filter and clean the gas entering or flowing out of the bath.

[0011] According to another embodiment of the present invention or any of the aforementioned embodiments, the low-temperature constant temperature bath is located at the lower part of the body and is separated from the bath body by a partition. The refrigeration mechanism includes a compressor, a fan, an evaporator, and a condenser. The liquid in the bath body is circulated by a water pump.

[0012] According to another embodiment of the present invention or any of the aforementioned embodiments, a low-temperature constant temperature bath is provided on the top of the body, and the top cover can be opened and closed to facilitate water bath cooling and maintenance.

[0013] According to another embodiment of the present invention or the low-temperature constant temperature bath of any of the aforementioned embodiments, the body is provided with a waste outlet that can be opened and closed, and the waste outlet is connected to the bath body.

[0014] According to another embodiment of the present invention or any of the above embodiments, the low-temperature constant temperature bath has two groups of gas coils that are in full contact with the liquid in the bath.

[0015] According to another embodiment of the present invention or the low-temperature constant temperature bath of any of the aforementioned embodiments, the gas coil is outside the condensate coil, or the condensate coil is outside the gas coil, and the condensate coil is a copper tube.

[0016] According to another embodiment of the present invention or any of the aforementioned embodiments, the low-temperature constant temperature bath adopts a frame structure, the sides of the body are surrounded by detachable baffles, and a plurality of groups of evenly arranged heat dissipation holes are provided at the lower part of the baffles.

[0017] According to another embodiment of the present invention or any of the above embodiments, a low-temperature constant temperature bath is provided, wherein a control system monitors the temperature in the constant temperature bath in real time via a temperature sensor, and the control system adjusts the operation of the refrigeration system according to a set value to keep the temperature within a set range; the control system adopts any of the following methods:

[0018] A. The machine body is equipped with buttons and screens. The buttons are used to adjust parameters and issue commands, and the screen displays the working status.

[0019] B. There are no buttons or screens on the machine body. The gas-liquid dual-cooling low-temperature constant temperature bath and other equipment used with it are controlled through a main console.

[0020] According to another embodiment of the present invention or any of the above embodiments, the low-temperature constant temperature bath is provided with universal wheels with brakes at the bottom of the body to facilitate movement of the device.

[0021] The working principle of this utility model:

[0022] The primary function of a cryostat is to cool the liquid within the tank to a set temperature through an internal cooling system. Within the tank, condensate removes heat from the liquid through a heat exchanger, maintaining the liquid's temperature within the desired low temperature range. Traditional cryostat baths primarily cool the liquid to be cooled, with the cooled liquid then leaving the tank; or they cool the medium within the tank, placing test tubes and other objects in the medium for water bath cooling. However, the present invention, designed for a wider range of experimental and industrial applications, incorporates gas coils within the cryostat. These coils are connected to a gas circuit, allowing gas to circulate through the coils within the tank. As the gas flows through these coils, it is cooled by the low-temperature liquid within the tank, and the heat in the gas is transferred to the low-temperature liquid through the coils, thereby cooling the gas. This allows the condensate coils to cool the liquid within the tank while also cooling the gas through the liquid within the tank. By cooling both the liquid and gas through a single system, the equipment achieves high integration, simplifies operation and management, avoids the need for multiple cooling devices, and saves space and procurement costs.

[0023] The gas coil utilizes liquid to cool the gas simultaneously, increasing the utilization of the cooling system and eliminating the need for separate, independent gas cooling equipment, thereby reducing overall energy consumption, equipment complexity, and maintenance costs. Through the combined cooling of the coil and liquid, the gas and liquid can maintain a relatively consistent temperature, facilitating temperature control in multi-media experiments or working conditions.

[0024] Beneficial effects of the utility model:

[0025] 1. The gas-liquid dual-cooling low-temperature thermostatic bath described in the utility model can handle the cooling needs of liquids and gases, and is suitable for a wider range of experimental or industrial application scenarios. In particular, it is used in working conditions where liquids and gases are collaboratively cooled. It has strong adaptability and can better maintain temperature consistency and stability, saving time and resources.

[0026] 2. The utility model reduces the need for multiple devices, reduces the cost of purchasing and maintaining multiple devices, and reduces energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is a three-dimensional schematic diagram of the gas-liquid dual-cooling low-temperature constant temperature tank described in the present invention;

[0028] Figure 2 This is a schematic front view of the gas-liquid dual-cooling low-temperature constant temperature tank of the present invention with the front and rear baffles removed;

[0029] Figure 3 This is a three-dimensional schematic diagram of the gas-liquid dual-cooling low-temperature constant temperature tank of the present invention with the front and rear baffles removed;

[0030] Figure 4 This is an enlarged three-dimensional schematic diagram of the tank body, gas coil, and condensate coil of the gas-liquid dual-cooling low-temperature constant temperature tank described in the present invention;

[0031] In the figure: 1. Machine body; 2. Top cover; 3. Baffle; 4. Air inlet connector; 5. Air outlet connector; 6. Liquid inlet; 7. Liquid outlet; 8. Waste outlet; 9. Filter; 10. Tank; 11. Water pump; 12. Compressor; 13. Fan; 14. Condenser; 15. Gas coil; 16. Condensate coil. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0033] like Figure 1 、 2 As shown, a gas-liquid dual-cooling low-temperature constant temperature tank includes: a body 1, a tank body 10, and a refrigeration mechanism. The tank body 10 and the refrigeration mechanism are located in the body 1. The refrigeration mechanism is located at the lower part of the body 1 and is separated from the tank body 10 by a partition. The refrigeration mechanism includes a compressor 12, a fan 13, an evaporator, and a condenser 14. The liquid in the tank body 10 is circulated through a water pump 11. A top cover 2 is provided on the top of the body 1, and the top cover 2 can be opened and closed to facilitate water bath cooling and maintenance. A universal wheel with a brake is installed at the bottom of the body 1 to facilitate the movement of the equipment. The body 1 adopts a frame structure, and the side of the body 1 is surrounded by a detachable baffle 3. A plurality of groups of evenly arranged heat dissipation holes are provided at the bottom of the baffle 3, which cooperate with the fan 13 to facilitate the timely dissipation of heat from the exchange of liquid and gas.

[0034] The control system monitors the temperature in the thermostatic bath in real time through a temperature sensor. The control system adjusts the operation of the refrigeration system according to the set value to keep the temperature within the set range. The control system adopts any of the following methods:

[0035] A. The machine body 1 is provided with buttons and a screen. The buttons are used to adjust parameters and issue instructions, and the screen displays the working status.

[0036] B. There are no buttons or screens on the machine body 1. The gas-liquid dual-cooling low-temperature constant temperature bath and other equipment used in conjunction with it are controlled through a main control console.

[0037] like Figure 2 、 3 As shown, the refrigeration mechanism is connected to the condensate coil 16 in the tank body 10, and the tank body 10 is connected to the liquid inlet 6 and the liquid outlet 7. The liquid in the tank body 10 circulates or circulates through the liquid inlet 6 and the liquid outlet 7. The body 1 is provided with a drain port 8 that can be opened and closed, and the drain port 8 is connected to the tank body 10.

[0038] like Figure 3 、 4 As shown, a gas coil 15 is also provided within the tank body 10. An air inlet connector 4 and an air outlet connector 5 are provided on the side of the body 1. Air enters the gas coil 15 through a pipe and the air inlet connector 4, is cooled by the liquid within the tank body 10, and then flows out through the air outlet connector 5. A filter 9 may also be provided. The filter 9 is mounted on the body 1 and connected to the air inlet connector 4 or the air outlet connector 5 via a pipe to filter and clean the gas entering or flowing out of the tank body 10. There can be two sets of gas coils 15 to ensure sufficient contact with the liquid within the tank body 10. The gas coil 15 is outside the condensate coil 16, or the condensate coil 16 is outside the gas coil 15. The condensate coil 16 is preferably a copper tube. Copper is an excellent thermal conductor with a high thermal conductivity. The use of copper tubes in the gas coil 15 improves the efficiency of heat exchange.

[0039] The working principle of this utility model:

[0040] The main function of a low-temperature thermostatic bath is to cool the liquid in the bath to a set temperature through an internal cooling system. In the bath body 10, the condensate removes the heat from the liquid through a heat exchange device, keeping the temperature of the liquid stable within the desired low-temperature range. Traditional low-temperature thermostatic baths mainly cool the liquid that needs to be cooled, and the cooled liquid leaves the bath; or they cool the medium in the bath body 10, placing test tubes and the like in the medium for water bath cooling. However, the present invention takes into account a wider range of experimental and industrial application scenarios and installs a gas coil 15 in the low-temperature thermostatic bath. The gas coil 15 is connected to a gas circuit, allowing the gas to circulate through the coil in the bath body 10. When the gas flows through these coils, the gas coil 15 is cooled by the low-temperature liquid in the bath, and the heat in the gas is transferred to the low-temperature liquid through the gas coil 15, achieving gas cooling. In this way, while the liquid in the bath body 10 is cooled by the condensate coil 16, the gas can also be cooled using the liquid in the bath as a medium. Liquid and gas are cooled through one system, with high equipment integration, which simplifies operation and management, avoids the need for multiple cooling devices, and saves space and procurement costs.

[0041] The gas coil 15 utilizes liquid to cool the gas simultaneously, increasing cooling system utilization and eliminating the need for separate, independent gas cooling equipment. This reduces overall energy consumption, equipment complexity, and maintenance costs. Through the combined cooling of the coil and liquid, the gas and liquid can maintain a relatively consistent temperature, facilitating temperature control in multi-media experiments or operating conditions.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those familiar with the art to understand and implement the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit and substance of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A gas-liquid dual-cooling low-temperature constant temperature bath, comprising: The machine body (1), the tank body (10), and the refrigeration mechanism are located in the machine body (1). The refrigeration mechanism is connected to the condensate coil (16) in the tank body (10), and the tank body (10) is connected to a liquid inlet (6) and a liquid outlet (7). The liquid in the tank body (10) circulates or circulates through the liquid inlet (6) and the liquid outlet (7). The invention is characterized in that a gas coil (15) is further provided in the tank body (10), and an air inlet joint (4) and an air outlet joint (5) are provided on the side of the machine body (1). The gas enters the gas coil (15) through the pipeline and the air inlet joint (4), is cooled by the liquid in the tank body (10), and then flows out from the air outlet joint (5).

2. The gas-liquid dual-cooling low-temperature constant temperature bath according to claim 1, characterized in that: It also includes a filter (9), which is installed on the body (1) and connected to the air inlet connector (4) or the air outlet connector (5) through a pipeline to filter and clean the gas entering or flowing out of the tank body (10).

3. The gas-liquid dual-cooling low-temperature constant temperature bath according to claim 1, characterized in that: The refrigeration mechanism is located at the lower part of the machine body (1) and is separated from the tank body (10) by a partition. The refrigeration mechanism includes a compressor (12), a fan (13), an evaporator, and a condenser (14). The liquid in the tank body (10) is circulated through a water pump (11).

4. The gas-liquid dual-cooling low-temperature constant temperature bath according to claim 1, characterized in that: A top cover (2) is provided on the top of the machine body (1), and the top cover (2) can be opened and closed.

5. The gas-liquid dual-cooling low-temperature constant temperature bath according to claim 1, characterized in that: The machine body (1) is provided with a waste discharge port (8) that can be opened and closed, and the waste discharge port (8) is connected to the tank body (10).

6. The gas-liquid dual-cooling low-temperature constant temperature bath according to claim 1, characterized in that: There are two groups of gas coils (15).

7. The gas-liquid dual-cooling low-temperature constant temperature bath according to claim 1, characterized in that: The gas coil (15) is outside the condensate coil (16), or the condensate coil (16) is outside the gas coil (15), and the condensate coil (16) is a copper tube.

8. The gas-liquid dual-cooling low-temperature constant temperature bath according to claim 1, characterized in that: The machine body (1) adopts a frame structure, and the side of the machine body (1) is surrounded by a detachable baffle (3), and a plurality of groups of evenly arranged heat dissipation holes are provided at the bottom of the baffle (3).

9. The gas-liquid dual-cooling low-temperature constant temperature bath according to claim 1, characterized in that: The control system monitors the temperature in the thermostatic bath in real time through a temperature sensor. The control system adjusts the operation of the refrigeration system according to the set value to keep the temperature within the set range. The control system adopts any of the following methods: A. The machine body (1) is equipped with buttons and a screen. The buttons are used to adjust parameters and issue commands, and the screen displays the working status. B. There are no buttons or screens on the machine body (1). The gas-liquid dual-cooling low-temperature constant temperature bath and its associated equipment are controlled through a main control console.

10. The gas-liquid dual-cooling low-temperature constant temperature bath according to claim 1, characterized in that: A universal wheel with a brake is installed at the bottom of the machine body (1).

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