A constant temperature device

Abstract

The present invention discloses a thermostatic device, including a temperature control circuit and a circulating water circuit, the two circuits exchange heat through a heat exchanger, and the circulating water circuit is used to adjust the temperature; the temperature control circuit includes a compressor, a first throttling element, a condenser and a second throttling element; the outlet of the compressor is respectively connected to the inlet of the first throttling element and the inlet of the condenser, the outlet of the condenser is connected to the inlet of the second throttling element, the outlets of the first throttling element and the second throttling element are both connected to the heat exchanger, and the heat exchanger is connected to the inlet of the compressor; the circulating water circuit includes a water storage tank, a water pump and a temperature detection device, the water outlet of the water storage tank is connected to the water inlet of the water pump, the water outlet of the water pump is connected to the water circulation inlet of the temperature-adjusting device, the water circulation outlet of the temperature-adjusting device and the water inlet of the water storage tank are both connected to the heat exchanger, and the temperature detection device is used to detect the water circulation inlet and water circulation outlet temperatures of the temperature-adjusting device. The thermostatic device can sensitively and accurately control the temperature of the temperature-adjusting device.

Description

Technical Field

[0001] The invention relates to the technical field of laser medical equipment, and in particular to a constant temperature device. Background Art

[0002] Lasers are devices that can emit lasers. They are widely used in the fields of industry, medicine, commerce, scientific research, information and military, especially in the medical field. According to the photoelectric conversion characteristics of the laser, when the laser is working, part of the laser's electrical energy is converted into laser light, and the other part is converted into heat energy. The laser is a device that is very sensitive to temperature. Its output wavelength and power will change with temperature changes, and temperature will also affect the working life of the laser. Therefore, temperature control is of great significance to the accuracy and life of the laser. Especially in the medical field, in order to stabilize the wavelength and power of the laser output and achieve the purpose of medical laser treatment, the temperature of the laser must be controlled with high precision.

[0003] In the prior art, low-power lasers are generally cooled by conventional semiconductor coolers (TEC, ThermoElectric Cooler), which cannot meet the high heat dissipation requirements of high-power lasers. Conventional water chillers only have basic temperature control functions and cannot achieve temperature increase, which does not meet the requirements and precision control of medical laser equipment.

[0004] Therefore, it is urgent to propose a constant temperature device that can perform constant temperature control on the laser. Summary of the invention

[0005] The purpose of the present invention is to provide a constant temperature device to solve the problem that the temperature control equipment of the laser in the prior art cannot heat up and cool down the high-power laser at the same time and cannot realize the constant temperature control of the laser.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A thermostatic device, comprising:

[0008] A temperature control circuit and a circulating water circuit, wherein the temperature control medium of the temperature control circuit is a refrigerant, the temperature control circuit and the circulating water circuit exchange heat through a heat exchanger, and the circulating water circuit is used to adjust the temperature;

[0009] The temperature control circuit comprises:

[0010] A temperature increasing circuit includes a compressor and a first throttling element; and

[0011] A cooling circuit, comprising the compressor, the condenser and the second throttling element;

[0012] The outlet of the compressor is respectively connected to the inlet of the first throttling element and the inlet of the condenser, the outlet of the condenser is connected to the inlet of the second throttling element, the outlets of the first throttling element and the second throttling element are both connected to the heat exchanger, and the heat exchanger is connected to the inlet of the compressor;

[0013] The circulating water loop comprises:

[0014] A water tank, a water pump and a temperature detection device, wherein the water outlet of the water tank is connected to the water inlet of the water pump, the water outlet of the water pump is used to connect to the water circulation inlet of the equipment to be temperature adjusted, the water circulation outlet of the equipment to be temperature adjusted and the water inlet of the water tank are both connected to the heat exchanger, and the temperature detection device is used to detect the temperature of the water circulation inlet and the water circulation outlet of the equipment to be temperature adjusted.

[0015] In an optional embodiment of the present invention, the outlet of the first throttling element and the outlet of the second throttling element are connected to the same heat exchange pipe, and the heat exchange pipe is connected to the heat exchanger.

[0016] In an optional embodiment of the present invention, an electronic fan for dissipating heat from the condenser is provided at the condenser.

[0017] In an optional embodiment of the present invention, a first pressure sensor and a first temperature sensor are arranged between the inlet of the compressor and the heat exchanger, the first pressure sensor is used to detect the pressure at the inlet of the compressor, and the first temperature sensor is used to detect the temperature of the temperature control circuit.

[0018] In an optional embodiment of the present invention, a filter is arranged between the condenser and the second throttling element.

[0019] In an optional implementation manner of the present invention, a second pressure sensor is provided between the condenser and the filter, and the second pressure sensor is used to detect the pressure of the cooling circuit.

[0020] In an optional embodiment of the present invention, the temperature detection device includes a second temperature sensor and a third temperature sensor;

[0021] The second temperature sensor is arranged at the rear end of the water outlet of the water pump, and is used to detect the water temperature at the water circulation inlet of the temperature-adjustable equipment;

[0022] The third temperature sensor is arranged at the front end of the heat exchanger, and is used to detect the water temperature at the water circulation outlet of the device to be temperature adjusted.

[0023] In an optional embodiment of the present invention, a third pressure sensor is provided at the rear end of the water outlet of the water pump, and the third pressure sensor is used to detect the water pressure at the water circulation inlet of the temperature-adjustable equipment.

[0024] In an optional implementation of the present invention, the water pump is a variable frequency pump.

[0025] In an optional embodiment of the present invention, the first throttling element and the second throttling element are electronic expansion valves.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The water temperature in the circulating water loop is controlled by heat exchange between the temperature control loop and the circulating water loop, and then the temperature of the device to be temperature adjusted (such as a laser) is adjusted by connecting the circulating water loop. A heating loop and a cooling loop centered on a compressor are provided in the temperature control loop, and a temperature detection device for detecting the water circulation inlet and water circulation outlet temperatures of the laser is also provided in the constant temperature device. According to the result of the temperature detection device detecting the water circulation inlet and water circulation outlet temperatures of the device to be temperature adjusted, the working conditions of the heating loop and the cooling loop in the temperature control loop are controlled to heat or cool the device to be temperature adjusted, thereby ensuring that the device to be temperature adjusted can always be kept at the set temperature, achieving constant temperature, ensuring the accuracy of the device to be temperature adjusted and the stability of its operation, and extending the service life of the device to be temperature adjusted;

[0028] By integrating the temperatures of the water circulation inlet and water circulation outlet of the temperature-controlled equipment and adopting multi-point detection to control the working conditions in the temperature control loop, the temperature adjustment result of the temperature-controlled equipment can be made more accurate, ensuring that the temperature-controlled equipment maintains a constant and appropriate working temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the planar structure of the thermostatic device in the present invention;

[0030] Figure 2 It is a simplified structural schematic diagram of the constant temperature device in the present invention.

[0031] In the figure:

[0032] 111- constant temperature device; 112- temperature control circuit; 113- circulating water circuit;

[0033] 1- compressor; 2- condenser; 3- first pressure sensor; 4- filter; 5- first throttling element; 6- second throttling element; 7- heat exchanger; 8- second pressure sensor; 9- first temperature sensor; 10- electronic fan; 11- laser; 12- second temperature sensor; 13- water tank; 14- water pump; 15- third temperature sensor; 16- third pressure sensor; 17- liquid level detection device. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0037] Figure 1 Schematic diagram of the planar structure of the thermostat in the present invention. Figure 1 As shown, the thermostat 111 of the present invention includes a temperature control circuit 112 and a circulating water circuit 113. The temperature control medium in the temperature control circuit 112 is a refrigerant. It can be understood that the medium in the circulating water circuit 113 is circulating water. The refrigerant in the temperature control circuit 112 and the circulating water in the circulating water circuit 113 exchange heat through the heat exchanger 7. The temperature control circuit 112 can adjust the temperature of the refrigerant, thereby transferring the temperature to the circulating water in the circulating water circuit 113. The circulating water circuit 113 is used to connect to the device to be temperature-adjusted to adjust the temperature of the device to be temperature-adjusted. In one embodiment of the present invention, the device to be temperature-adjusted is a laser 11. In the embodiment of the present invention, the laser 11 is used as the temperature adjustment object to illustrate the specific structure of the thermostat 111 of the present invention. The temperature of the circulating water in the circulating water circuit 113 is changed by heat exchange between the refrigerant and the circulating water in the circulating water circuit 113. The circulating water in the circulating water circuit 113 flows into the laser 11, thereby changing the temperature of the laser 11 and realizing the constant temperature control of the laser 11.

[0038] The constant temperature device 111 of the present invention does not include the laser 11 in the protection scope. Figure 1 The laser 11 is introduced in the figure to facilitate the explanation of the connection method between the constant temperature device 111 and the laser 11 when in use. It does not limit the constant temperature device 111 of the present invention to include the laser 11. The constant temperature device 111 of the present invention can be understood as a device independent of the laser 11, which is only connected to the laser 11 through pipes and other connecting parts when in use.

[0039] Please continue reading Figure 1 The temperature control circuit 112 includes a heating circuit and a cooling circuit. The heating circuit includes a compressor 1 and a first throttling element 5. The cooling circuit includes a compressor 1, a condenser 2 and a second throttling element 6. Specifically:

[0040] like Figure 1 As shown, the outlet of the compressor 1 is connected to the inlet of the first valve 5 and the inlet of the condenser 2 respectively, that is, the refrigerant flows out of the outlet of the compressor 1 and is divided into two paths, namely, a heating circuit and a cooling circuit. Specifically, the flow direction of the refrigerant can be controlled by the throttling elements on the heating circuit and the cooling circuit. The outlet of the condenser 2 is connected to the inlet of the second valve 6, and the outlets of the first valve 5 and the second valve 6 are both connected to the heat exchanger 7, and the heat exchanger 7 is connected to the inlet of the compressor 1.

[0041] When the heating circuit is working, the first throttling element 5 is opened and the second throttling element 6 is closed. The low-pressure steam of the refrigerant in the circuit is sucked into the compressor 1 and compressed into high-temperature steam. The high-temperature steam passes through the pipeline of the heating circuit and the first throttling element 5. The first throttling element 5 sprays the high-temperature steam into the heat exchanger 7. The high-temperature steam and the circulating water exchange heat through the heat exchanger 7 to heat the circulating water. After the circulating water is heated, it flows through the water circulation system of the laser 11 to heat the laser 11.

[0042] When the cooling circuit is working, the second throttling element 6 is opened and the first throttling element 5 is closed. The low-pressure steam of the refrigerant in the circuit is sucked into the compressor 1 and compressed into high-temperature steam, and discharged to the condenser 2, so that the high-pressure refrigerant steam is condensed into high-pressure liquid refrigerant. The high-pressure liquid refrigerant is sprayed into the heat exchanger 7 through the second throttling element 6, and evaporates under low pressure, absorbing the heat of the heat exchanger 7, so that the circulating water flowing through the heat exchanger 7 is refrigerated. After being refrigerated, the circulating water flows through the water circulation system of the laser 11 to cool the laser 11.

[0043] The temperature control circuit 112 of the present invention is provided with a heating circuit and a cooling circuit centered on the compressor 1, which can ensure that the laser 11 can always be maintained at a set temperature, achieve constant temperature, ensure the accuracy and working stability of the laser 11, and extend the service life of the laser 11. In addition, the temperature control circuit 112 can adjust the heating and cooling states at any time according to the temperature of the laser 11, so that the compressor 1 can always maintain a working state, avoid the situation where the compressor 1 cannot respond quickly due to frequent start and stop, and also avoid the phenomenon of inaccurate water circulation control temperature and water temperature overshoot.

[0044] The outlet of the first valve 5 and the outlet of the second valve 6 can be connected to the heat exchanger 7 independently, or they can be combined into one pipeline and connected to the heat exchanger 7. Figure 1 As shown, in one embodiment, the outlet of the first valve 5 and the outlet of the second valve 6 are connected to the same heat exchange pipe, and the heat exchange pipe is connected to the heat exchanger 7. Because the heating circuit and the cooling circuit work selectively, when one circuit works, the other does not work. Each circuit has a corresponding throttling element control, the first throttling element 5 controls the on and off of the heating circuit, and the second throttling element 6 controls the on and off of the cooling circuit. Therefore, even if the outlet of the first valve 5 and the outlet of the second valve 6 are connected to the same heat exchange pipe and then connected to the heat exchanger 7, only the temperature control medium in the heating circuit or the cooling circuit may appear in this heat exchange pipe, and it is impossible to have the temperature control medium in both the heating circuit and the cooling circuit at the same time, that is, only heating or cooling is realized. Even if the heating circuit and the cooling circuit are combined into a heat exchange pipe and then connected to the heat exchanger 7, they will not affect each other. Connecting the outlet of the first valve 5 and the outlet of the second valve 6 to the same heat exchange pipe can save materials and simplify the structure.

[0045] Please continue reading Figure 1 The circulating water loop 113 includes a water tank 13, a water pump 14 and a temperature detection device, and the temperature detection device is used to detect the temperature of the water circulation inlet and the water circulation outlet of the laser 11. Figure 1 As shown, the water outlet of the water tank 13 is connected to the water inlet of the water pump 14, the water outlet of the water pump 14 is connected to the water circulation inlet of the laser 11, and the water circulation outlet of the laser 11 and the water inlet of the water tank 13 are both connected to the heat exchanger 7, so that the circulating water flowing out of the water circulation outlet of the laser 11 passes through the heat exchanger 7 for heat exchange and temperature adjustment, and then flows into the water tank 13. The temperature-adjusted circulating water flowing into the water tank 13 is pumped into the laser 11 by the water pump 14, and then the temperature of the laser 11 is adjusted to keep the laser 11 at a constant temperature.

[0046] In order to make the condenser 2 have better condensation performance, an electronic fan 10 can be provided for the condenser 2. Figure 1As shown, the condenser 2 is provided with an electronic fan 10 for dissipating heat from the condenser 2. The electronic fan 10 can inhale air from the external environment to flow through the condenser 2, take away the heat released by the refrigerant in the condenser 2, and dissipate heat for the condenser 2. In addition, a temperature sensor is also provided in the thermostat 111, and the speed of the electronic fan 10 is adjusted according to the temperature detected by the temperature sensor to achieve energy saving and noise control.

[0047] Specifically, a first pressure sensor 3 and a first temperature sensor 9 are provided between the inlet of the compressor 1 and the heat exchanger 7. The first pressure sensor 3 is used to detect the pressure at the inlet of the compressor 1, and the first temperature sensor 9 is used to detect the temperature of the temperature control circuit 112. The thermostat 111 can adjust the speed of the electronic fan 10 according to the temperature detected by the first temperature sensor 9, and can also judge whether the temperature control meets the requirements according to the temperature detected by the first temperature sensor 9, and adjust its own working state, such as controlling the opening degree of the first throttling element 5 or the second throttling element 6 to adjust the flow rate of the condensing agent in the circuit. The first pressure sensor 3 is mainly used to detect the pressure at the inlet of the compressor 1 to protect the compressor 1, so that the inlet pressure of the compressor 1 is not higher than the rated pressure, and to avoid damage to the compressor 1. When the pressure is too high, the refrigerant flow in the circuit can be reduced to reduce the pressure.

[0048] In the present invention, the first throttling element 5 and the second throttling element 6 are electronic expansion valves or capillaries, preferably electronic expansion valves, which can adjust the flow rate in real time and continuously according to the electrical signal. They are electronic expansion valves driven by stepping motors. The electronic expansion valves apply digital signals with certain logical relationships to the stepping motors, so that the stepping motors drive the valve needles to move forward or backward through the threads, thereby changing the flow area of ​​the valve port to achieve the purpose of controlling the flow rate. As electronic control elements, electronic expansion valves have the advantage of timely flow regulation. The electronic expansion valves are timely in changing the displacement of the compressor 1, and have the effects of high precision, fast action and energy saving. They are combined with the temperature control circuit 112 in the thermostat 111 to achieve fast and accurate temperature control of the thermostat 111.

[0049] like Figure 1 As shown, a filter 4 is provided between the condenser 2 and the second throttling element 6. The filter 4 is mainly used for storing liquid, similar to the filter of the air conditioner outdoor unit. The filter 4 is used to store and supply the liquid refrigerant in the cooling circuit. The cooling circuit consumes refrigerant during operation. With the liquid storage of the filter 4, the profit and loss of the liquid refrigerant can be compensated and adjusted. Generally speaking, when the cooling circuit starts to work, the load is large and the circulation amount of the refrigerant is also large. At this time, the refrigerant needs to be supplemented. After working for a period of time, the load is reduced, and the amount of refrigerant required is correspondingly reduced, so the filter 4 plays the role of storing liquid and adjusting.

[0050] In addition, a second pressure sensor 8 is provided between the condenser 2 and the filter 4 to detect the pressure of the cooling circuit. According to the detection result of the second pressure sensor 8, the flow of the second throttling element 6 in the cooling circuit can be adjusted to make the cooling circuit reach the optimal state and protect related devices.

[0051] In one embodiment, the temperature detection device of the circulating water loop 113 includes a second temperature sensor 12 and a third temperature sensor 15. The second temperature sensor 12 is arranged at the rear end of the water outlet of the water pump 14, and is used to detect the water temperature at the water circulation inlet of the laser 11. The third temperature sensor 15 is arranged at the front end of the heat exchanger 7, and is used to detect the water temperature at the water circulation outlet of the laser 11. The front end and the rear end mentioned in the present invention are distinguished according to the direction of the medium flow. The place where the medium flows first is the front end, and the place where the medium flows later is the rear end. Figure 1 The arrows in the middle indicate the flow direction of the medium in each circuit. The working state of the temperature control circuit 112 is controlled by detecting the water temperature at the water circulation inlet and the water circulation outlet of the laser 11. For example, when the third temperature sensor 15 detects that the water temperature at the water circulation outlet of the laser 11 is too high, the cooling circuit in the temperature control circuit 112 is controlled to cool the circulating water, thereby causing the circulating water to cool the laser 11. After cooling, it can be determined whether the adjusted circulating water has reached the ideal temperature based on the water temperature at the water circulation inlet of the laser 11 detected by the second temperature sensor 12. In this way, the temperature control operation of the thermostat 111 is adjusted and controlled by the coordinated detection of the second temperature sensor 12 and the third temperature sensor 15, combined with the detection of the temperature in the temperature control circuit 112 by the first temperature sensor 9. Compared with the single-point temperature detection in the prior art, the accuracy of the detection result can be improved to ensure the accuracy of the temperature control.

[0052] In addition, a third pressure sensor 16 may be provided at the rear end of the water outlet of the water pump 14 . The third pressure sensor 16 is used to detect the water pressure at the water circulation inlet of the laser 11 .

[0053] The water pump 14 may use a variable frequency pump, which can adjust the water pressure in the circulating water loop 113 in real time to control the water pressure within a reasonable range to protect the equipment. For example, the third pressure sensor 16 can be used to detect the pressure at the water circulation inlet of the laser 11, and the variable frequency pump can be adjusted in real time according to the detection result to ensure that the pressure at the water circulation inlet of the laser 11 is within the allowable range to protect the laser 11. In addition, the variable frequency pump can also play a role in energy saving and silent.

[0054] Preferably, a liquid level detection device 17 can be provided in the water tank 13 to monitor the water level in the water tank 13 in real time, ensure that the water level in the water tank 13 is normal, and ensure the normal operation of the laser 11. The liquid level detection device 17 can be, for example, a water level sensor, a float switch, etc.

[0055] Figure 2 It is a simplified structural schematic diagram of the thermostatic device in the present invention, such as Figure 1 As shown, the present invention connects the compressor 1 to the heating circuit and the cooling circuit respectively, and the heating circuit and the cooling circuit are respectively provided with a first throttling element 5 and a second throttling element 6, and the working state of the heating circuit and the cooling circuit is switched by controlling the on and off of the throttling element. Both the heating circuit and the cooling circuit can perform heat exchange with the circulating water circuit 113 to heat or cool the circulating water, and then the circulating water flows into the laser 11 to heat or cool the laser 11. The present invention can realize accurate temperature control of the laser 11, and has a simple structure and low cost.

[0056] See also Figure 1 , the working process of the thermostat 111 of the present invention is:

[0057] When the third temperature sensor 15 detects that the water temperature is higher than the operating temperature, it means that the temperature of the laser 11 is too high, and the circulating water needs to be cooled to indirectly cool the laser 11; at this time, the first throttling element 5 is closed, the second throttling element 6 is opened, and the compressor 1 sucks the low-pressure steam of the refrigerant in the device and compresses it into high-temperature steam, which is discharged to the condenser 2; the electronic fan 10 sucks air from the environment and blows the air to the condenser 2, taking away the heat released by the refrigerant, and condensing the high-pressure refrigerant steam into high-pressure liquid refrigerant; the high-pressure liquid refrigerant passes through the second pressure sensor 8 and the filter After the refrigerant passes through the refrigerant pipe 4, it is sprayed into the refrigerant pipe through the second throttling element 6 and enters the heat exchanger 7, and evaporates under low pressure, absorbing the heat of the heat exchanger 7, so that the circulating water flowing through the heat exchanger 7 is refrigerated; the refrigerated circulating water flows into the water storage tank 13 through the water circulation pipe, and the water in the water storage tank 13 is pressurized by the water pump 14 and passes through the second temperature sensor 12 and the third pressure sensor 16, and then enters the water circulation inlet of the laser 11 to cool the laser 11; the circulating water takes away the heat of the laser 11 and passes through the third temperature sensor 15 and is connected to the heat exchanger 7, and the cycle is repeated.

[0058] When the third temperature sensor 15 detects that the water temperature is lower than the operating temperature, it means that the temperature of the laser 11 is too low, and the circulating water needs to be heated to indirectly heat the laser 11; at this time, the first throttling element 5 is opened, and the second throttling element 6 is closed, and the compressor 1 sucks the low-pressure steam of the refrigerant in the device and compresses it into high-temperature steam, and sprays the high-temperature steam into the heat exchanger 7 through the pipeline and the first throttling element 5, so that the high-pressure refrigerant condenses into a low-pressure gaseous refrigerant, and the heat exchanger 7 releases heat to heat the circulating water flowing through the heat exchanger 7; the heated circulating water flows into the water storage tank 13 through the water circulation pipeline, and the water in the water storage tank 13 is pressurized by the water pump 14 and passes through the second temperature sensor 12 and the third pressure sensor 16, and then enters the water circulation inlet of the laser 11 to heat the laser 11; the circulating water heats the laser 11, passes through the third temperature sensor 15, and is then connected to the heat exchanger 7, and the cycle is repeated.

[0059] It is worth mentioning that the heating of the laser 11 in the present invention is mainly aimed at using the laser 11 in an environment with low ambient temperature, such as in the northern region. Generally, the laser 11 will generate heat when working, so the current temperature control technology of the laser 11 only has a solution to cool the laser 11. When the laser 11 starts to work in a cold environment, it will seriously cause the inaccuracy of the laser 11. The current temperature control technology of the laser 11 has no or very few technical solutions for heating the laser 11. Even if there is, it is very simple, such as directly heating the laser 11 through a heating plate or a heater. It is impossible to achieve precise temperature control, and it is impossible to integrate heating and cooling into a relatively streamlined and reasonable device.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A constant temperature device, characterized in that: include: A temperature control circuit (112) and a circulating water circuit (113), wherein the temperature control medium of the temperature control circuit (112) is a refrigerant, the temperature control circuit (112) and the circulating water circuit (113) exchange heat via a heat exchanger (7), and the circulating water circuit (113) is used to adjust the temperature; The temperature control circuit (112) comprises: A temperature increasing circuit comprises a compressor (1) and a first throttling element (5); and A cooling circuit, comprising the compressor (1), a condenser (2) and a second throttling element (6); The outlet of the compressor (1) is respectively connected to the inlet of the first throttling element (5) and the inlet of the condenser (2); the outlet of the condenser (2) is connected to the inlet of the second throttling element (6); the outlets of the first throttling element (5) and the second throttling element (6) are both connected to the heat exchanger (7); and the heat exchanger (7) is connected to the inlet of the compressor (1); The circulating water loop (113) comprises: A water storage tank (13), a water pump (14) and a temperature detection device, wherein the water outlet of the water storage tank (13) is connected to the water inlet of the water pump (14), the water outlet of the water pump (14) is used to connect to the water circulation inlet of the device to be temperature adjusted, the water circulation outlet of the device to be temperature adjusted and the water inlet of the water storage tank (13) are both connected to the heat exchanger (7), and the temperature detection device is used to detect the temperature of the water circulation inlet and the water circulation outlet of the device to be temperature adjusted.

2. The thermostatic device according to claim 1, characterized in that: The outlet of the first throttling element (5) and the outlet of the second throttling element (6) are connected to the same heat exchange pipe, and the heat exchange pipe is connected to the heat exchanger (7).

3. The thermostatic device according to claim 1, characterized in that: The condenser (2) is provided with an electronic fan (10) for dissipating heat from the condenser (2).

4. The thermostatic device according to claim 1, characterized in that: A first pressure sensor (3) and a first temperature sensor (9) are provided between the inlet of the compressor (1) and the heat exchanger (7); the first pressure sensor (3) is used to detect the pressure at the inlet of the compressor (1); and the first temperature sensor (9) is used to detect the temperature of the temperature control circuit (112).

5. The thermostatic device according to claim 1, characterized in that: A filter (4) is arranged between the condenser (2) and the second throttling element (6).

6. The thermostatic device according to claim 5, characterized in that: A second pressure sensor (8) is provided between the condenser (2) and the filter (4), and the second pressure sensor (8) is used to detect the pressure of the cooling circuit.

7. The constant temperature device according to claim 1, characterized in that: The temperature detection device comprises a second temperature sensor (12) and a third temperature sensor (15); The second temperature sensor (12) is arranged at the rear end of the water outlet of the water pump (14) and is used to detect the water temperature at the water circulation inlet of the temperature-adjustable equipment; The third temperature sensor (15) is arranged at the front end of the heat exchanger (7) and is used to detect the water temperature at the water circulation outlet of the device to be temperature-controlled.

8. The constant temperature device according to claim 1, characterized in that: A third pressure sensor (16) is provided at the rear end of the water outlet of the water pump (14), and the third pressure sensor (16) is used to detect the water pressure at the water circulation inlet of the temperature-adjustable equipment.

9. The constant temperature device according to claim 1, characterized in that: The water pump (14) is a variable frequency pump.

10. The constant temperature device according to claim 1, characterized in that: The first throttling element (5) and the second throttling element (6) are electronic expansion valves.

Images