Circulating system of low-temperature water bath thermostat

Abstract

The utility model relates to the technical field of water bath thermostats, in particular to a circulating system of a low-temperature water bath thermotank. A circulating system of a low-temperature water bath constant-temperature box comprises a main body shell and a constant-temperature water tank arranged in the main body shell, the constant-temperature water tank is arranged in a water tank chamber and comprises a box body and a box cover, a cooling pipe, a refrigerant input pipe and a refrigerant return pipe are arranged in the box body, and the refrigerant input pipe and the refrigerant return pipe are communicated with the cooling pipe and penetrate through the box cover. A compressor and a condenser which are respectively communicated with a refrigerant input pipe and a refrigerant return pipe are arranged in the condensation chamber, a refrigerant is stored in the condenser, the compressor conveys the refrigerant in the condenser to the cooling pipe through the refrigerant input pipe for evaporation and heat absorption, and then the refrigerant flows back to the condenser through the refrigerant return pipe for condensation to form a refrigerant circulation system; a water outlet is formed in the bottom of the box body, a water return port is formed in the box cover, and a circulating pump connected between the water outlet and the water return port is arranged in the upper water chamber to form a water circulating system.

Description

Technical Field

[0001] This utility model relates to the field of water bath constant temperature chamber technology, specifically a low-temperature water bath constant temperature chamber circulation system. Background Technology

[0002] In biomedical research and development, low-temperature water bath incubators are commonly used to preserve biological samples and conduct low-temperature enzymatic reactions. They are also applied in chemical engineering processes such as low-temperature synthesis. However, existing low-temperature water bath incubators have many shortcomings.

[0003] Currently, most thermostatic chambers have rudimentary water circulation systems, with water often in a static or weakly flowing state within the chamber. When the equipment operates at low temperatures, the stagnant water is highly susceptible to freezing in the area in contact with the cooling pipes due to localized excessively low temperatures. For example, in the low-temperature extraction process of pharmaceutical companies, the freezing of water in traditional thermostatic chambers can damage the extraction equipment, severely impacting production progress and product quality. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] A low-temperature water bath constant temperature chamber circulation system includes a main shell and a constant temperature water tank disposed inside the main shell. The main shell has a partition that divides its internal space into a water tank chamber, a water inlet chamber, and a condensation chamber. The constant temperature water tank is disposed in the water tank chamber. The constant temperature water tank includes a tank body and a tank cover. The tank body is provided with cooling pipes and a refrigerant inlet pipe and a refrigerant return pipe that are connected to the cooling pipes and pass through the tank cover. The condensation chamber is provided with a compressor and a condenser that are respectively connected to the refrigerant inlet pipe and the refrigerant return pipe. The condenser stores refrigerant. The compressor delivers the refrigerant in the condenser to the cooling pipes through the refrigerant inlet pipe for evaporation and heat absorption, and then returns it to the condenser through the refrigerant return pipe to condense, thus forming a refrigerant circulation system. The bottom of the tank body is provided with a drain outlet, and the tank cover is provided with a return water outlet. The water inlet chamber is provided with a circulation pump that connects the drain outlet and the return water outlet, thus forming a water circulation system.

[0006] Furthermore, the outer wall of the cooling water tank is wrapped with insulating cotton that is attached to it and provides heat insulation.

[0007] Furthermore, the chamber is equipped with a rotatable water bath support, and the chamber lid has an opening for taking out and putting in water, with a cover plate on the opening.

[0008] Furthermore, a ball valve switch is installed in the constant temperature water tank, and a water pump connected to the ball valve switch signal is installed in the water inlet chamber. The outlet of the water pump is connected to the return water port on the tank cover, and the main body shell is provided with a water inlet that connects to the external water source and the water inlet of the water pump.

[0009] Furthermore, the water tank compartment is also equipped with an evaporator whose refrigerant inlet is connected to the compressor, and the refrigerant outlet of the evaporator is connected to the condenser.

[0010] Furthermore, flat-plane swivel casters are installed at the four bottom corners of the main body shell.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: through the coordinated work of the refrigerant circulation system and the water circulation system, a stable low-temperature environment is provided for experiments or production, and the water circulation system can effectively prevent water from freezing and broaden the applicable temperature range of the equipment.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the cooling water tank in this utility model. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Please see Figures 1-2A low-temperature water bath constant temperature chamber circulation system includes a main shell 1 and a constant temperature water tank 2 disposed within the main shell 1. The main shell 1 has a partition dividing its internal space into a water tank chamber 3, a water inlet chamber 4, and a condensation chamber 5. The constant temperature water tank 2 is disposed in the water tank chamber 3 and includes a body 6 and a cover 7. The body 6 contains cooling pipes 8 and refrigerant inlet pipes 9 and 10 that communicate with the cooling pipes 8 and pass through the cover 7. The condensation chamber 5 contains a compressor 11 and a condenser 12, which are respectively connected to the refrigerant inlet pipe 9 and the refrigerant return pipe 10. The condenser 12 stores refrigerant. The compressor 11 delivers the refrigerant from the condenser 12 to the cooling pipes 8 via the refrigerant inlet pipe 9 for evaporation and heat absorption, and then returns it to the condenser 12 via the refrigerant return pipe 10 for condensation, thus forming a refrigerant circulation system. The bottom of the tank 6 is provided with a drain outlet 13, the cover 7 is provided with a return water outlet 14, and the water chamber 4 is provided with a circulation pump 15 connecting the drain outlet 13 and the return water outlet 14, forming a water circulation system.

[0018] The circulating pump 15 is a high-temperature resistant, low-noise magnetically driven pump. It draws cold water from the bottom of the tank 6 through the drain port 13 at a flow rate of ≥5L / min and delivers it to the bottom of the tank cover 7 through the return port 14, forming a water flow from top to bottom. The continuously flowing water cannot form stable ice crystals due to kinetic energy, and remains liquid even when the water temperature is close to the freezing point (0℃).

[0019] The outer wall of the cooling water tank 2 is wrapped with insulating cotton 16 that is attached to it and provides heat insulation. A rotatable water bath support 17 is installed inside the tank body 6. The tank cover 7 has a loading / unloading port 18 with a cover plate 19. A ball valve switch 20 is installed in the constant temperature water tank 2. A water pump 21 connected to the ball valve switch 20 is installed in the upper water chamber 4. The outlet of the water pump 21 connects to the return water port 14 on the tank cover 7. The main body shell 1 has a water inlet 22 connecting to an external water source and the inlet of the water pump 21. An evaporator 23, with its refrigerant inlet connected to the compressor 11, is also installed in the water tank chamber 3. The refrigerant outlet of the evaporator 23 connects to the condenser 12. Flat-faced swivel casters 24 are installed at the four corners of the bottom of the main body shell 1.

[0020] In actual use, the compressor 11 is started, and the refrigerant circulates in the refrigerant circulation system, cooling the water in the constant temperature water tank 2 through the cooling pipe 8. The circulation pump 15 starts, circulating the water in the tank in the water circulation system to ensure uniform water temperature and prevent freezing. When the water level in the constant temperature water tank 2 drops, the ball valve switch 20 detects the signal and transmits it to the water pump 21, which then starts to replenish water. Experimenters can easily access and remove experimental items by opening the cover 19 of the access port 18 and using the rotatable water bath support 17.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A low-temperature water bath constant temperature chamber circulation system, comprising a main body shell and a constant temperature water tank disposed within the main body shell, characterized in that, The main body shell has a partition that divides its internal space into a water tank chamber, a water inlet chamber, and a condensation chamber. The constant temperature water tank is located in the water tank chamber. The constant temperature water tank includes a tank body and a tank cover. The tank body contains cooling pipes and refrigerant inlet pipes and refrigerant return pipes that are connected to the cooling pipes and pass through the tank cover. The condensation chamber contains a compressor and a condenser that are connected to the refrigerant inlet pipe and the refrigerant return pipe, respectively. The condenser stores refrigerant. The compressor transports the refrigerant in the condenser to the cooling pipes through the refrigerant inlet pipe for evaporation and heat absorption, and then returns it to the condenser through the refrigerant return pipe to condense, forming a refrigerant circulation system. The bottom of the tank body has a drain outlet, and the tank cover has a return water outlet. The water inlet chamber has a circulation pump that connects the drain outlet and the return water outlet, forming a water circulation system.

2. The low-temperature water bath constant temperature chamber circulation system according to claim 1, characterized in that, The outer wall of the cooling water tank is wrapped with thermal insulation cotton that is attached to it and provides heat insulation.

3. The low-temperature water bath constant temperature chamber circulation system according to claim 1, characterized in that, The chamber is equipped with a rotatable water bath support, and the lid has an opening for taking out and putting in water, with a cover plate on the opening.

4. The low-temperature water bath constant temperature chamber circulation system according to claim 1, characterized in that, The constant temperature water tank is equipped with a ball valve switch. The water inlet chamber is equipped with a water pump that is connected to the ball valve switch signal. The outlet of the water pump is connected to the return water port on the tank cover. The main body shell is equipped with a water inlet that connects to the external water source and the water inlet of the water pump.

5. The low-temperature water bath constant temperature chamber circulation system according to claim 1, characterized in that, The water tank compartment is also equipped with an evaporator whose refrigerant inlet is connected to the compressor, and whose refrigerant outlet is connected to the condenser.

6. The low-temperature water bath constant temperature chamber circulation system according to claim 1, characterized in that, The bottom four corners of the main body shell are equipped with flat-sided swivel casters.

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