Constant temperature system

Abstract

The utility model provides a constant temperature system, which relates to the technical field of semiconductor lasers and comprises a liquid storage tank and a circulating flow channel, the circulating flow channel comprises a liquid inlet pipeline, a heat exchange structure and a liquid return pipeline, and the heat exchange pipeline is arranged in the heat exchange structure; one end of the liquid inlet pipeline is communicated with a liquid outlet of the liquid storage tank, and the other end is communicated with an inlet of the heat exchange pipeline; one end of the liquid return pipeline is communicated with a liquid inlet of the liquid storage tank, and the other end is communicated with an outlet of the heat exchange pipeline; a pump body, a heater and a flow sensor are arranged on the liquid inlet pipeline, and the pump body is used for enabling heat exchange liquid in the liquid storage tank to flow into the heat exchange pipeline; and a first temperature sensor is arranged on the liquid return pipeline.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor laser technology, and in particular to a constant temperature system. Background Technology

[0002] High-power, high-heat lasers have the problem of generating a large amount of heat and a fast heat generation rate. A fast and wide-range temperature control system can keep the laser operating at a constant temperature.

[0003] Currently, high-power laser equipment generally uses water cooling. This method involves heat dissipation through contact cooling to remove heat from the laser and conduct it to a water cooling box. The water cooling box then uses air cooling to lower the water temperature before circulating it to the laser. However, this system suffers from low adjustment rate and poor adjustment accuracy, which severely restricts the stability of the laser wavelength. While TEC (Thermal Transformer) is a mainstream fast adjustment device that solves these problems, it has limitations, including a low adjustment range, extremely poor ability to adjust for high temperature differences, and long-term reliability risks. Therefore, it is generally not used as a heat dissipation device. Utility Model Content

[0004] The purpose of this invention is to provide a constant temperature system to alleviate the technical problem of poor temperature regulation accuracy in existing constant temperature systems.

[0005] The present invention provides a constant temperature system, comprising: a liquid storage tank and a circulation channel, wherein the circulation channel includes an inlet pipe, a heat exchange structure and a return pipe, and the heat exchange structure is provided with a heat exchange pipe inside;

[0006] One end of the liquid inlet pipe is connected to the liquid outlet of the liquid storage tank, and the other end is used to connect to the inlet of the heat exchange pipe; one end of the liquid return pipe is connected to the liquid inlet of the liquid storage tank, and the other end is used to connect to the outlet of the heat exchange pipe.

[0007] The inlet pipe is equipped with a pump body, a heater and a flow sensor. The pump body is used to allow the heat exchange liquid in the storage tank to flow into the heat exchange pipe.

[0008] A first temperature sensor is installed on the return liquid pipeline.

[0009] Furthermore, a first pressure sensor is installed on the inlet pipe, and a second pressure sensor is installed on the return pipe.

[0010] Furthermore, a second temperature sensor is installed on the liquid inlet pipe, located between the heater and the heat exchange structure.

[0011] Furthermore, the storage tank has an automatic replenishment mechanism;

[0012] And / or, the storage tank has a manual replenishment port.

[0013] Furthermore, a first valve body is provided at the inlet of the heat exchange pipe;

[0014] The outlet of the heat exchange pipeline is equipped with a second valve body.

[0015] Furthermore, a filter is installed on the liquid inlet pipe.

[0016] Furthermore, the heat exchange fluid is a fluorinated fluid.

[0017] Furthermore, a heat exchange device is provided on the return liquid pipeline, and the first temperature sensor is located between the heat exchange device and the heat exchange structure. The heat exchange device is used to cool the heat exchange liquid.

[0018] Furthermore, the heat exchange device includes a heat exchanger and a coolant circulation channel. The heat exchanger is connected to the coolant circulation channel and the return pipe, respectively, so that the coolant circulation channel absorbs heat from the return pipe through the heat exchanger.

[0019] Furthermore, the number of the circulation channels is at least two, and at least two circulation channels share a single storage tank.

[0020] This utility model has at least the following advantages or beneficial effects:

[0021] The constant temperature system provided by this utility model includes: a liquid storage tank and a circulation channel. The circulation channel includes an inlet pipe, a heat exchange structure, and a return pipe. The heat exchange structure has a heat exchange pipe inside. One end of the inlet pipe is connected to the outlet of the liquid storage tank, and the other end is connected to the inlet of the heat exchange pipe. One end of the return pipe is connected to the inlet of the liquid storage tank, and the other end is connected to the outlet of the heat exchange pipe. A pump body, a heater, and a flow sensor are installed on the inlet pipe. The pump body is used to allow the heat exchange liquid in the liquid storage tank to flow into the heat exchange pipe. A first temperature sensor is installed on the return pipe.

[0022] The device to be processed can be mounted on a heat exchange structure, where heat exchange occurs between the structure and the device. After the device is operational, the pump is activated, and the heat exchange liquid in the storage tank enters the heat exchange pipes of the heat exchange structure through the inlet pipe, where it exchanges heat with the structure. It then flows into the return pipe and finally back into the storage tank. A heater is installed in the inlet pipe to heat the heat exchange liquid, initially meeting the preset temperature required by the device. The flow rate of the heat exchange liquid can be adjusted by regulating the pump, thereby changing the heat exchange efficiency between the liquid and the heat sink, and thus altering the ambient temperature of the device. A first temperature sensor in the return pipe indicates the ambient temperature of the heat exchange structure. By monitoring this temperature and adjusting the power of the heater and pump, the difference between the detected temperature and the preset temperature can be gradually reduced, bringing the temperature value detected by the first temperature sensor closer to the desired preset temperature. This solution, by adjusting the ambient temperature required by the device through both the heater and the pump, improves the accuracy of temperature regulation, making the detected temperature closer to the preset temperature. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the constant temperature system provided in an embodiment of this utility model.

[0025] Icons: 100 - Storage tank; 110 - Automatic replenishment port; 120 - Manual replenishment port; 130 - Liquid level sensor; 140 - Vent port; 150 - Drain port;

[0026] 200 – Pump body; 300 – Heater; 400 – Filter; 500 – Flow sensor; 610 – First temperature sensor; 620 – Second temperature sensor; 710 – First pressure sensor; 720 – Second pressure sensor; 810 – First valve body; 820 – Second valve body; 900 – Heat exchanger; 910 – Heat exchanger; 920 – Coolant circulation channel. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] like Figure 1 As shown, the constant temperature system provided by this utility model can perform constant temperature treatment on devices that require a constant temperature environment, such as lasers, and may include: a liquid storage tank 100 and a circulation channel.

[0034] The storage tank 100 stores heat exchange fluid, which can be replenished periodically using an automatic replenishment mechanism. This mechanism includes a pump, one end of which is connected to a replenishment tank. A controller periodically draws heat exchange fluid from the replenishment tank into the storage tank 100. An automatic replenishment port 110 of the storage tank 100, connected to the automatic replenishment mechanism, is equipped with a solenoid valve to control its opening and closing. A manual replenishment port 120 can also be provided for manually replenishing heat exchange fluid into the storage tank 100.

[0035] A liquid level sensor 130 is installed inside the storage tank 100 to prevent overfilling. The storage tank 100 includes a vent 140 equipped with a solenoid valve to allow venting during replenishment, preventing excessive internal pressure. The storage tank 100 also includes a drain port 150 and a solenoid valve controlling its opening and closing, enabling automatic control. A manually operated ball valve is also provided at the drain port 150. The solenoid valve and ball valve jointly control the opening and closing of the drain port 150; the drain port 150 only opens when both are in the conducting state, preventing accidental opening.

[0036] The number of circulation channels can be one or two. In this embodiment, there are two circulation channels, which can simultaneously regulate the ambient temperature of both device A and device B to be processed.

[0037] The circulation channel includes an inlet pipe and a return pipe. One end of the inlet pipe is connected to the storage tank 100, and the other end is used to connect to the inlet of the heat exchange pipe of the heat exchange structure; one end of the return pipe is connected to the storage tank 100, and the other end is used to connect to the outlet of the heat exchange pipe.

[0038] Taking the device A to be processed as an example, starting from the liquid storage tank 100, the liquid inlet pipe is sequentially equipped with a pump body 200, a heater 300, a filter 400, a flow sensor 500, a second temperature sensor 620, a first pressure sensor 710, and a first valve body 810.

[0039] The pump body 200 is used to allow the heat exchange liquid in the storage tank 100 to flow into the heat exchange pipe of the heat exchange structure. The pump body 200 can be a magnetic pump.

[0040] The heater 300 is used to heat the heat exchange fluid. The filter 400 can be a heat exchange fluid type filter 400 to filter impurities in the heat exchange fluid. The flow sensor 500 detects the flow rate of the heat exchange fluid and can display the flow rate value, which directly reflects the change in the power of the pump body 200.

[0041] The second temperature sensor 620 can detect and display the temperature of the heat exchange fluid before it enters the heat exchange structure, providing data for detection and data analysis.

[0042] The first pressure sensor 710 can detect the pressure inside the inlet pipe, and together with the second pressure sensor 720 on the return pipe, it can indicate whether there is a leak in the heat exchange structure. When there is a large difference between the inlet and outlet pressure values, it is necessary to check whether the heat exchange structure is damaged.

[0043] Starting from the heat exchange structure, the return liquid pipeline is equipped with a second valve body 820, a first temperature sensor 610, a second pressure sensor 720, and a heat exchange device.

[0044] The first valve body 810 and the second valve body 820 are located at the inlet and outlet of the heat exchange pipeline, respectively. Both can be ball valves. The on / off state of the inlet and outlet of the heat exchange structure can be changed by manual opening and closing. When the heat exchange structure needs to be replaced, both the first valve body 810 and the second valve body 820 can be closed.

[0045] The first temperature sensor 610 is used to detect the temperature of the heat exchange fluid flowing out of the heat exchange pipe of the heat exchange structure. This temperature directly reflects the temperature of the surrounding environment of the device to be processed, i.e., it serves as the detection temperature in the scheme. By comparing the detected temperature with a preset temperature, the power of the pump 200 and the heater 300 is adjusted to reduce the difference between the detected temperature and the preset temperature. Specifically, the system controller is electrically connected to the pump 200, the heater 300, the flow sensor 500, and the first temperature sensor 610, respectively. The controller adjusts the power of the pump 200 and the heater 300 based on the temperature of the heat exchange fluid in the return pipe and the flow rate in the inlet pipe, so that the temperature of the heat exchange fluid flowing out of the heat exchange structure is within the preset range.

[0046] For device A to be processed, a heat exchange device 900 is provided on the return liquid pipe. The first temperature sensor 610 is located between the heat exchange device 900 and the heat exchange structure. The heat exchange device 900 is used to dissipate heat from the heat exchange liquid. The system controller is electrically connected to the heat exchange device 900. The controller adjusts the power of the pump body 200, heater 300 and heat exchange device 900 according to the temperature of the heat exchange liquid flowing out of the heat exchange pipe of the heat exchange structure, so that the temperature of the heat exchange liquid flowing out of the heat exchange pipe of the heat exchange structure is within a preset range.

[0047] When the temperature detected by the first temperature sensor 610 is higher than the preset temperature, the heat exchanger 900 can be used to cool the heat exchange fluid, and then the power of the heater 300 can be reduced or heating can be stopped. This lowers the temperature of the heat exchange fluid flowing into the heat exchange structure, preventing the actual temperature of the heat exchange fluid from becoming too high. The preset temperature is the ambient temperature required for the device A to operate; for example, in an aging experiment, the preset temperature is the temperature required for the aging of device A. The heat exchanger 900 includes a heat exchanger 910 and a coolant circulation channel 920. The heat exchanger 910 is connected to both the coolant circulation channel 920 and a return pipe, allowing the coolant circulation channel 920 to absorb heat from the return pipe through the heat exchanger 910. The coolant circulating in the cooling pipe can be water.

[0048] The heat exchange fluid can be a fluorinated fluid.

[0049] As for the other circulation channel, this circulation channel is used to perform constant temperature treatment on the device B to be processed. The two circulation channels share a liquid storage tank 100. Since the device B to be processed has low power, a heat dissipation device is not required. All other structures are the same.

[0050] When using this system to regulate temperature, the heater 300 can be adjusted first to achieve coarse temperature regulation based on the difference between the detected temperature and the preset temperature. Then, the power of the pump 200 can be adjusted to change the flow rate and achieve fine temperature regulation, thereby achieving the preset temperature in the detected temperature range.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A constant temperature system, characterized in that, include: A liquid storage tank (100) and a circulation channel, wherein the circulation channel includes an inlet pipe, a heat exchange structure and a return pipe, and the heat exchange structure is provided with a heat exchange pipe inside; One end of the liquid inlet pipe is connected to the liquid outlet of the liquid storage tank (100), and the other end is used to connect to the inlet of the heat exchange pipe; one end of the liquid return pipe is connected to the liquid inlet of the liquid storage tank (100), and the other end is used to connect to the outlet of the heat exchange pipe. The inlet pipe is equipped with a pump body (200), a heater (300) and a flow sensor (500). The pump body (200) is used to allow the heat exchange liquid in the storage tank (100) to flow into the heat exchange pipe. A first temperature sensor (610) is installed on the return liquid pipeline.

2. The constant temperature system according to claim 1, characterized in that, A first pressure sensor (710) is installed on the inlet pipe, and a second pressure sensor (720) is installed on the return pipe.

3. The constant temperature system according to claim 1, characterized in that, A second temperature sensor (620) is installed on the liquid inlet pipe between the heater (300) and the heat exchange structure.

4. The constant temperature system according to claim 1, characterized in that, The storage tank (100) has an automatic replenishment mechanism; And / or, the storage tank (100) has a manual replenishment port (120).

5. The constant temperature system according to claim 1, characterized in that, The inlet of the heat exchange pipe is equipped with a first valve body (810); The outlet of the heat exchange pipe is equipped with a second valve body (820).

6. The constant temperature system according to claim 1, characterized in that, A filter (400) is installed on the liquid inlet pipe.

7. The constant temperature system according to claim 1, characterized in that, The heat exchange fluid is a fluorinated fluid.

8. The constant temperature system according to claim 1, characterized in that, A heat exchange device (900) is provided on the return liquid pipeline, and the first temperature sensor (610) is located between the heat exchange device (900) and the heat exchange structure. The heat exchange device (900) is used to cool the heat exchange liquid.

9. The constant temperature system according to claim 8, characterized in that, The heat exchange device (900) includes a heat exchanger (910) and a coolant circulation channel (920). The heat exchanger (910) is connected to the coolant circulation channel (920) and the return pipe, respectively, so that the coolant circulation channel (920) absorbs heat from the return pipe through the heat exchanger (910).

10. The constant temperature system according to claim 1, characterized in that, The number of circulation channels is at least two, and at least two circulation channels share a single storage tank (100).

Images