A temperature control valve system and an air wave therapeutic instrument using the same

Abstract

The application relates to the field of temperature control valves, and provides a temperature control valve system which comprises a first three-way valve, a second three-way valve, a temperature sensor, a delivery pump and a control terminal, forms multiple different circuits, utilizes the temperature sensor to monitor the fluid temperature in a first pipeline in real time, utilizes the control terminal to control the opening and closing and opening degree of each valve according to the data monitored by the temperature sensor, and timely reduces or increases the temperature, and improves the response speed. The application also provides an air wave therapeutic instrument provided with the temperature control valve system, which comprises a capsule body, the temperature control valve system and a cold water tank. The application has the effects that the temperature is adjusted by using the human body temperature of a user, the cost of the air wave therapeutic instrument is reduced, green environmental protection is realized, meanwhile, the temperature of the whole system is ensured to be not too high, and the effect of avoiding scalding is achieved.

Description

Technical Field

[0001] This application relates to the field of temperature control valves, and more particularly to a temperature control valve system and an air wave therapy device using the temperature control valve system. Background Technology

[0002] Airwave therapy is a physical therapy device that uses inflatable airbags to periodically apply pressure and relax the limbs. It is widely used in areas such as preventing deep vein thrombosis, relieving lymphedema, and promoting blood circulation. To improve treatment comfort and effectiveness, modern airwave therapy devices are usually equipped with heating devices to heat the air inflated into the airbags, bringing the airbags closer to body temperature.

[0003] In the process of achieving temperature control, existing temperature control solutions mostly adopt a simple structure of a two-position two-way solenoid valve or proportional valve combined with a heater. For example, a common solution is to detect the air temperature at the heater outlet using a temperature sensor and feed the signal back to the control terminal, which then switches the heater's power supply on or off or adjusts its power, thereby achieving coarse control of the air temperature.

[0004] However, the on / off control of the heater has a certain lag in response, which can easily cause the output air temperature to fluctuate significantly around the set value, resulting in the airbag temperature being too high or too low relative to the human body. Summary of the Invention

[0005] In order to improve the accuracy of air temperature control and reduce fluctuations in air wave therapy devices, this application provides a temperature control valve system and an air wave therapy device using the temperature control valve system.

[0006] On the one hand, the temperature control valve system provided in this application adopts the following technical solution:

[0007] A temperature control valve system includes a first three-way valve, a second three-way valve, a temperature sensor, a first pipe, a second pipe, a third pipe, a delivery pump, and a control terminal. The first three-way valve has a first outlet, a first inlet, and a second outlet, with the first outlet and the first inlet connected via the first pipe. The temperature sensor is disposed on the first pipe. The second three-way valve has a third outlet, a second inlet, and a third inlet, with the second outlet and the second inlet connected via the second pipe. The third outlet is connected to the first pipe via the third pipe, and the connection point of the third pipe to the first pipe is located between the first outlet and the temperature sensor. The third inlet is connected to... The system is connected to the outside environment; the delivery pump is installed in the first pipeline and located at the connection point between the third pipeline and the first pipeline. The delivery pump has a first delivery port, a second delivery port, and a third delivery port. The first delivery port is connected to the first pipeline, the second delivery port is connected to the first outlet, and the third delivery port is connected to the third outlet. The temperature sensor is communicatively connected to the control terminal. The control terminal is used to control the opening and closing of the first outlet, the first inlet, the second outlet, the third outlet, the second inlet, and the third inlet, as well as their opening degree. The control terminal is also used to control the opening and closing of the first delivery port, the second delivery port, and the third delivery port.

[0008] By adopting the above technical solution, the aforementioned temperature control valve system has multiple application modes. When air is introduced into the temperature control valve system, it has two loops: the first loop is delivery pump—temperature sensor—first three-way valve—delivery pump; the second loop is delivery pump—temperature sensor—bladder—first three-way valve—second three-way valve—delivery pump. In use, the bladder is installed in the first loop. At this time, the valve at the third outlet can be closed, cutting off the passage between the second three-way valve and the delivery pump. Simultaneously, the valve at the second outlet is closed, cutting off the passage between the second three-way valve and the first three-way valve, storing air at a higher or lower temperature in the second and third pipes. The temperature sensor collects the temperature signal of the fluid in the first pipe located between the delivery pump and the bladder and sends the temperature signal to the control terminal. The control terminal processes the received temperature signal from the temperature sensor to form the detected temperature and compares it with the preset temperature. The control terminal can control the valve opening of the second outlet, the second inlet, and the third outlet according to the detected temperature, thereby mixing and adjusting the temperature of the air in the circuit. If necessary, outside air can also be introduced from the third inlet for temperature adjustment. The whole system is highly flexible and has a fast response, ensuring the user's comfort.

[0009] Optionally, it also includes a first check valve, which is disposed in the second pipeline and is used to prevent fluid from flowing from the second three-way valve to the first three-way valve.

[0010] Optionally, the first pipe is provided with a first mounting position for mounting a bladder, the inner cavity of the bladder being in communication with the inner cavity of the first pipe; the second pipe is provided with a second mounting position for mounting a cold water tank, the inner cavity of the cold water tank being in communication with the inner cavity of the second pipe.

[0011] By adopting the above technical solution, another application scenario for the temperature control valve system can be realized, namely, introducing liquid into the temperature control valve system. In this case, if the detected temperature is lower than the preset temperature, the passage between the first three-way valve and the first one-way valve is closed, and the passage between the first three-way valve and the delivery pump is opened, so that the circulation path of the liquid is delivery pump—temperature sensor—bag—first three-way valve—delivery pump. During the entire circulation process, the body temperature of the human body is used to raise the temperature of the liquid circulating in the path to the preset temperature.

[0012] If the detected temperature is higher than the preset temperature, the passage between the first three-way valve and the delivery pump is closed, and the passage between the second three-way valve and the first one-way valve is opened, so that the circulation path of the liquid is delivery pump—temperature sensor—bladder—first three-way valve—first one-way valve—cold water tank—second three-way valve—delivery pump, thereby using the cold water in the cold water tank with a lower temperature to cool the liquid in the circulation path to the same temperature as the preset temperature.

[0013] Optionally, the system further includes a heating device and a second one-way valve. The heating device is disposed in the first pipeline and is located between the first three-way valve and the temperature sensor. The second one-way valve is disposed in the first pipeline and is located between the temperature sensor and the first mounting position. The second one-way valve includes a valve body, a valve core, a spring, and a limiting ring. The valve core includes a movable part and an abutment part. The abutment part is connected to the movable part and extends along the length direction of the valve body. The outer diameter of the abutment part is larger than the outer diameter of the movable part. The inner wall of the valve body has a first partition and a second partition. The valve body has a retaining ring, which is connected to the inner wall of the valve body and extends along the length of the valve body. The movable part passes through the retaining ring and abuts against the inner wall of the retaining ring. The retaining ring includes a receiving bladder and a hydrogel sheet filled in the receiving bladder. The hydrogel sheet is made of PLGA-PEG-PLGA block copolymer.

[0014] By adopting the above technical solution, the PLGA-PEG-PLGA block copolymer exhibits thermosensitive self-assembly behavior, exhibiting a large-volume sol state at low temperatures and a small-volume gel state at human body temperature (around 37°C).

[0015] When the air wave therapy device is first used, the heating device heats the fluid entering the first pipe. If the temperature does not reach the preset temperature (human body temperature) during the heating process, the limiting ring is in a state of large expansion, and the movable part abuts against the inner wall of the limiting ring, obstructing the passage of fluid. When the temperature reaches the preset temperature, the limiting ring shrinks to the extent that the movable part can be removed from the limiting ring, so that the fluid that has reached the specific temperature can pass through, further ensuring the comfort of the user of the air wave therapy device.

[0016] Optionally, the limiting ring has multiple through holes evenly distributed around its periphery; a rigid limiting cylinder is fixed to the wall of each through hole; multiple limiting rods are fixed to the inner wall of the valve body, and the limiting cylinder is used for the limiting rods to pass through, with each limiting rod corresponding to one of the multiple through holes; when the movable part abuts against the inner cavity of the limiting ring, there is a gap between the end of the limiting rod and the end of the movable part.

[0017] By adopting the above technical solution, the limiting ring is fixed to the inner wall of the valve body using multiple limiting rods. At the same time, since the limiting rods pass through the through holes, the radial expansion of the limiting ring is not restricted. Furthermore, since there is a gap between the limiting rods and the movable part, the movable part can slide smoothly relative to the limiting ring after the limiting ring shrinks.

[0018] Optionally, the outer diameter of the movable part gradually decreases to near zero from one end near the abutment to the other.

[0019] By adopting the above technical solution, it is ensured that the moving part can smoothly pass through the limiting ring, thereby ensuring that the valve core can smoothly return to its original position under the action of the spring after use.

[0020] Optionally, the end of the limiting cylinder away from the movable part protrudes from the outer wall of the limiting ring; the inner wall of the valve body is provided with a through slot for the limiting cylinder to be inserted.

[0021] By adopting the above technical solution, the connection stability between the limit rod and the limit ring is enhanced by adding a limit cylinder, thereby enhancing the connection stability between the limit ring and the valve body; the purpose of setting the through slot is to provide movement space for the limit cylinder during the expansion of the limit ring.

[0022] On the other hand, the air wave therapy device provided in this application adopts the following technical solution.

[0023] An air wave therapy device includes a cold water tank, a capsule, and a temperature control valve system; the cold water tank is disposed in a second pipeline and is used to contain cold water with a temperature ≤35℃; the capsule is installed in the first pipeline and is located between the temperature sensor and the first three-way valve.

[0024] By adopting the above technical solution, during the operation of the air wave therapy device, the body temperature is set to a preset temperature. The specific temperature value is obtained from measurements taken on the user's body and can be slightly higher or lower. A temperature sensor collects the temperature signal of the fluid in the first pipe located between the delivery pump and the capsule, and sends the temperature signal to the control terminal. The control terminal processes the received temperature signal from the temperature sensor to form the detected temperature and compares it with the preset temperature.

[0025] If the detected temperature is lower than the preset temperature, the passage between the first three-way valve and the first one-way valve is closed, and the passage between the first three-way valve and the delivery pump is opened, so that the circulation path of the liquid is delivery pump—temperature sensor—bag—first three-way valve—delivery pump. During the entire circulation process, the body temperature of the human body is used to raise the temperature of the liquid circulating in the path to the preset temperature.

[0026] If the detected temperature is higher than the preset temperature, the passage between the first three-way valve and the delivery pump is closed, and the passage between the second three-way valve and the first one-way valve is opened. This results in the liquid circulation path being: delivery pump—temperature sensor—bag—first three-way valve—first one-way valve—cold water tank—second three-way valve—delivery pump. The lower-temperature water in the cold water tank then cools the liquid in the circulation path to the same temperature as the preset temperature. Utilizing the user's body temperature for temperature adjustment reduces the cost of the air wave therapy device, achieving a green and environmentally friendly approach, while also ensuring that the overall system temperature does not become excessively high, preventing burns.

[0027] On the other hand, the air wave therapy device provided in this application adopts the following technical solution.

[0028] An air wave therapy device includes a cold water tank, a capsule, and a temperature control valve system; the cold water tank is disposed in a second pipeline and is used to contain cold water with a temperature ≤35℃; the capsule is installed in the first pipeline and is located between a second one-way valve and a first three-way valve.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] By setting up a temperature control valve system composed of multiple loops and installing a temperature sensor in the first pipeline, the temperature of the fluid in the first pipeline is monitored in real time and the temperature signal is sent to the control terminal. The control terminal compares the detected temperature with the preset temperature and adjusts the opening or closing of each valve, thereby adjusting the temperature of the fluid in the first pipeline in a timely manner.

[0031] By installing a heating device and a second one-way valve in the first pipeline, the heating device is located between the delivery pump and the temperature sensor, and the second one-way valve is located between the temperature sensor and the first mounting position. At the beginning of the use of the air wave therapy device, the heating device is used to heat the fluid entering the first pipeline. If the temperature does not reach the preset temperature during the heating process, the movable part abuts against the inner wall of the limiting ring to prevent the fluid from passing through. When the temperature reaches the preset temperature, the limiting ring shrinks to the extent that the movable part can disengage from the limiting ring, so that the fluid that reaches the specific temperature can pass through, further ensuring the comfort of the user of the air wave therapy device.

[0032] The air wave therapy device includes a cold water tank, a temperature control valve system, and a capsule. The capsule is located in the first pipeline and between the temperature sensor and the first three-way valve. When the fluid temperature is too low, the temperature is adjusted by the user's own body temperature, reducing costs and ensuring user comfort. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the temperature control valve system in Embodiment 1 of this application.

[0034] Figure 2 This is a schematic diagram of the housing structure of the air wave therapy device in Example 1.

[0035] Figure 3 This is a circuit diagram used to illustrate the situation where the temperature of the air wave therapy device is too low in Example 1.

[0036] Figure 4 This is a circuit diagram used to illustrate the situation where the temperature of the air wave therapy device is too high in Example 1.

[0037] Figure 5 This is a schematic diagram illustrating the fluid path in Example 1, where fluid from the capsule is forced into the cold water tank.

[0038] Figure 6 This is a schematic diagram of the temperature control valve system in Embodiment 2 of this application.

[0039] Figure 7 This is a schematic diagram illustrating the structure of the second check valve in Embodiment 2.

[0040] Figure 8 yes Figure 7 Enlarged diagram of part A.

[0041] Figure 9 This is a schematic diagram of the air wave therapy device in Embodiment 2 of this application.

[0042] Explanation of reference numerals in the attached drawings: 1. First three-way valve; 11. First outlet; 12. First inlet; 13. Second outlet; 2. Second three-way valve; 21. Third outlet; 22. Second inlet; 23. Third inlet; 3. Temperature sensor; 4. First pipe; 41. First mounting position; 42. Heating device; 43. Second check valve; 431. Valve body; 4311. First partition; 4312. Second partition; 4313. Limiting rod; 432. Valve core; 4321. Moving part; 4322. Abutment part; 433. Spring; 434. Limiting ring; 4341. Through hole; 4342. Limiting cylinder; 5. Second pipe; 51. First check valve; 52. Second mounting position; 6. Third pipe; 7. Delivery pump; 9. Cold water tank; 10. Bag body; 101. Housing. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0044] This application discloses a temperature control valve system and an air wave therapy device using the temperature control valve system. Example 1

[0045] Reference Figures 1 to 5 A temperature control valve system includes a first three-way valve 1, a second three-way valve 2, a temperature sensor 3, a first pipe 4, a second pipe 5, a third pipe 6, a delivery pump 7, and a control terminal.

[0046] Among them, the first three-way valve 1, the second three-way valve 2, the temperature sensor 3, and the delivery pump 7 are connected to the control terminal for communication. The control terminal controls the opening and closing of each valve and the degree of opening. The components are connected by each pipeline to realize the delivery of fluid and temperature regulation.

[0047] Specifically, the first three-way valve 1 has a first outlet 11, a first inlet 12, and a second outlet 13, with the first outlet 11 and the first inlet 12 connected via a first pipe 4. The first three-way valve 1 can be an electrically operated three-way regulating valve, which can precisely adjust the opening degree of each port according to a control signal. The diameter of the first outlet 11 and the first inlet 12 can be designed according to actual flow requirements.

[0048] Temperature sensor 3 is installed in the first pipe 4. Temperature sensor 3 can be a thermistor type, which can quickly and accurately measure the temperature of the fluid in the first pipe 4. Temperature sensor 3 is communicatively connected to the control terminal, transmitting the measured temperature signal to the control terminal in real time.

[0049] The second three-way valve 2 has a third outlet 21, a second inlet 22, and a third inlet 23. The second outlet 23 and the second inlet 22 are connected via a second pipe 5. The second three-way valve 2 can also be an electrically operated three-way regulating valve. The third outlet 21 is connected to the first pipe 4 via a third pipe 6, and the connection point between the third pipe 6 and the first pipe 4 is located between the first outlet 11 and the temperature sensor 3. The material and diameter of the third pipe 6 can be matched with those of the first pipe 4 and the second pipe 5. The third inlet 23 is connected to the outside environment, allowing outside air or other fluids to enter the system.

[0050] The delivery pump 7 is installed in the first pipeline 4 and located at the connection point between the third pipeline 6 and the first pipeline 4. The delivery pump 7 has a first delivery port, a second delivery port, and a third delivery port. The first delivery port is connected to the first pipeline 4, the second delivery port is connected to the first outlet 11, and the third delivery port is connected to the third outlet 21. The delivery pump 7 is communicatively connected to a control terminal, which can control the start and stop of the delivery pump 7 and the delivery flow rate.

[0051] The control terminal can be a microcontroller or a PLC controller. The control terminal is used to control the opening and closing of the first outlet 11, the first inlet 12, the second outlet 13, the third outlet 21, the second inlet 22, and the third inlet 23, as well as the opening degree of the first conveyor port, the second conveyor port, and the third conveyor port.

[0052] It also includes a first check valve 51, which is located in the second pipeline 5, between the first three-way valve 1 and the second three-way valve 2. The first check valve 51 prevents fluid from flowing from the second three-way valve 2 to the first three-way valve 1. This design prevents backflow of fluid, ensuring the normal flow direction of fluid within the system, which helps improve the stability and reliability of the system and avoids problems such as inaccurate temperature control caused by fluid backflow. In practical applications, when the opening of the second three-way valve 2 is adjusted, pressure fluctuations may occur. The first check valve 51 can act as a protective measure in this situation, ensuring the normal operation of the entire temperature control valve system. The first check valve 51 can be a spring-loaded 433 type check valve, which has a simple structure and high reliability.

[0053] Furthermore, the first pipe 4 is provided with a first mounting position 41 for mounting the bladder 10, and the inner cavity of the bladder 10 is interconnected with the inner cavity of the first pipe 4. The second pipe 5 is provided with a second mounting position 52 for mounting the cold water tank 9, and the inner cavity of the cold water tank 9 is interconnected with the inner cavity of the second pipe 5. The bladder 10 can be made of rubber, which has good flexibility and elasticity and can better conform to the human body. The shape of the bladder 10 can be designed according to the needs of different parts of the human body; for example, the bladder 10 for the arm can be designed to be slender, while the bladder 10 for the leg can be designed to be wider.

[0054] The cold water tank 9 can be made of plastic. A refrigeration device can be installed inside the cold water tank 9, or an insulation device can be installed on the outside of the cold water tank 9 to ensure that the cold water in the cold water tank 9 is kept at a low temperature.

[0055] The aforementioned temperature control valve system has multiple application modes. When air is introduced into the system, it has two loops: the first loop is: pump 7—temperature sensor 3—first three-way valve 1—pump 7; the second loop is: pump 7—temperature sensor 3—bladder 10—first three-way valve 1—second three-way valve 2—pump 7. In use, the bladder 10 is connected to the first mounting position 41, i.e., the bladder 10 is installed in the first loop. At this time, the valve of the third outlet 21 can be closed, cutting off the passage between the second three-way valve 2 and the pump 7. Simultaneously, the valve of the second outlet 13 is closed, cutting off the passage between the second three-way valve 2 and the first three-way valve 1. Higher or lower temperature air is stored in the second pipe 5 and the third pipe 6. The temperature sensor 3 collects the temperature signal of the fluid in the first pipe 4 located between the pump 7 and the bladder 10 and sends the temperature signal to the control terminal. The control terminal processes the received temperature signal from the temperature sensor 3 to form a detected temperature and compares it with a preset temperature. The control terminal can control the valve opening of the second outlet 13, the second inlet 22, and the third outlet 21 according to the detected temperature, thereby mixing and adjusting the temperature of the air in the circuit. If necessary, outside air can also be introduced from the third inlet 23 for temperature adjustment. The whole system is highly flexible and has a fast response, ensuring the user's comfort.

[0056] In addition, this embodiment also discloses an air wave therapy device that utilizes the temperature control valve system described above, thereby illustrating the situation where fluid is recirculated through the temperature control valve system. An air wave therapy device includes a cold water tank 9, a capsule 10, a temperature control valve system, and a housing 101. Both the cold water tank 9 and the temperature control valve system are housed within the housing 101. The cold water tank 9 is located in the second pipe 5 and is used to contain cold water with a temperature ≤35℃. The capsule 10 is installed in the first pipe 4 and is located between the second one-way valve 43 and the first three-way valve 1. In this air wave therapy device, the fluid flowing through the temperature control valve system is water, and the fluid filling the capsule is also water.

[0057] The implementation principle of Example 1 is as follows: During the operation of the air wave therapy device, the human body temperature is set to a preset temperature. The specific temperature value is obtained from the measurement of the user's body and can be slightly higher or lower. Temperature sensor 3 collects the temperature signal of the fluid located in the first pipe 4 between the delivery pump 7 and the capsule 10, and sends the temperature signal to the control terminal. The control terminal processes the received temperature signal from temperature sensor 3 to form a detected temperature and compares it with the preset temperature.

[0058] If the detected temperature is lower than the preset temperature, the passage between the first three-way valve 1 and the first one-way valve 51 is closed, and the passage between the first three-way valve 1 and the delivery pump 7 is opened, so that the circulation path of the liquid is delivery pump 7—temperature sensor 3—bag 10—first three-way valve 1—delivery pump 7. During the entire circulation process, the body temperature of the human body is used to raise the temperature of the liquid circulating in the path to the preset temperature.

[0059] If the detected temperature is higher than the preset temperature, the passage between the first three-way valve 1 and the delivery pump 7 is closed, and the passage between the second three-way valve 2 and the first one-way valve 51 is opened, so that the circulation path of the liquid is delivery pump 7—temperature sensor 3—bag 10—first three-way valve 1—first one-way valve 51—cold water tank 9—second three-way valve 2—delivery pump 7, thereby using the cold water with a lower temperature in the cold water tank 9 to cool the liquid in the circulation path to the same temperature as the preset temperature.

[0060] In addition, when draining the bladder 10, the passage between the cold water tank 9 and the second three-way valve 2 is cut off, so that the second three-way valve 2 is connected to the outside. The outside air is introduced into the bladder 10 by the delivery pump 7, and then the air is used to squeeze the liquid in the bladder 10 into the cold water tank 9, thereby realizing the drainage of the bladder 10. Example 2

[0061] Reference Figures 6 to 9The difference between this embodiment and Embodiment 1 is that the temperature control valve system further includes a heating device 42 and a second check valve 43. The heating device 42 is disposed in the first pipeline 4 and is located between the delivery pump 7 and the temperature sensor 3. The second check valve 43 is disposed in the first pipeline 4 and is located between the temperature sensor 3 and the first mounting position 41.

[0062] The second one-way valve 43 includes a valve body 431, a valve core 432, a spring 433, and a limiting ring 434. The valve core 432 includes a movable part 4321 and an abutting part 4322. The abutting part 4322 is connected to the movable part 4321 and extends along the length of the valve body 431. The outer diameter of the abutting part 4322 is larger than the outer diameter of the movable part 4321. The inner wall of the valve body 431 has a first partition part 4311 and a second partition part 4312. The abutting part 4322 and the spring 433 are located between the first partition part 4311 and the second partition part 4312. The end of the abutting part 4322 near the movable part 4321 abuts against the first partition part 4311.

[0063] One end of the spring 433 abuts against the end of the abutment portion 4322 away from the movable portion 4321, and the other end abuts against the second partition portion 4312. The limiting ring 434 is connected to the inner wall of the valve body 431 and extends along the length of the valve body 431. The movable portion 4321 passes through the limiting ring 434 and abuts against the inner wall of the limiting ring 434.

[0064] The limiting ring 434 includes a receiving sac and a hydrogel sheet filled inside the receiving sac. The hydrogel sheet is made of PLGA-PEG-PLGA block copolymer. PLGA-PEG-PLGA block copolymer has thermosensitivity and self-assembly behavior, exhibiting a large-volume sol state at low temperatures and a small-volume gel state at body temperature (around 37°C). At the beginning of use of the air wave therapy device, the heating device 42 heats the fluid entering the first pipe 4. If the temperature does not reach the preset temperature (human body temperature) during heating, the limiting ring 434 is in a large-volume expanded state, with the movable part 4321 abutting against the inner wall of the limiting ring 434, obstructing fluid passage. When the temperature reaches the preset temperature, the limiting ring 434 shrinks to the point where the movable part 4321 can disengage from the limiting ring 434, allowing fluid reaching the specific temperature to pass through, further ensuring the user's comfort.

[0065] It is understandable that the second check valve 43 can be detachably connected to the first pipe 4. When the cold or hot compress function is required, the second check valve 43 can be removed from the first pipe 4. The specific structure and method of the detachable connection can be any of the existing valve and pipe detachable connection methods, which will not be elaborated here.

[0066] The heating device 42 can be an electric heating wire, which heats the fluid by being wound around the outside of the first pipe 4. The power of the heating device 42 can be adjusted according to the actual heating requirements. The moving part 4321 and the abutting part 4322 of the valve core 432 can be made of copper, which has good thermal conductivity and wear resistance. The spring 433 can be made of carbon steel, and its elastic coefficient is designed according to the actual working pressure.

[0067] Furthermore, the circumference of the limiting ring 434 is provided with multiple through holes 4341, which are evenly distributed. A limiting cylinder 4342 is bonded to the inner wall of each through hole 4341. Multiple limiting rods 4313 are fixed to the inner wall of the valve body 431, and the limiting cylinder 4342 is used for the limiting rods 4313 to pass through. Each limiting rod 4313 corresponds one-to-one with a through hole 4341. When the movable part 4321 abuts against the inner cavity of the limiting ring 434, there is a gap between the end of the limiting rod 4313 and the end of the movable part 4321.

[0068] Furthermore, the end of the limiting cylinder 4342 furthest from the movable part 4321 protrudes from the outer wall of the limiting ring 434. A through slot is provided on the inner wall of the valve body 431 for the insertion of the limiting cylinder 4342. This design enhances the connection stability between the limiting rod 4313 and the limiting ring 434, thereby strengthening the connection stability between the limiting ring 434 and the valve body 431. The purpose of the through slot is to provide movement space for the limiting cylinder 4342 during the expansion of the limiting ring 434.

[0069] Furthermore, from one end near the abutment portion 4322 to the other end, the outer diameter of the movable portion 4321 gradually decreases to near zero. This ensures that the movable portion 4321 can smoothly pass through the limiting ring 434, thereby ensuring that the valve core 432 can smoothly return to its original position under the action of the spring 433 after use.

[0070] This embodiment also provides an air wave therapy device, which utilizes the temperature control valve system provided in this embodiment, including a cold water tank 9, a capsule 10, and a temperature control valve system. The cold water tank 9 is disposed in the second pipe 5 and is used to contain cold water with a temperature ≤35℃. The capsule 10 is installed in the first pipe 4 and is located between the second one-way valve 43 and the first three-way valve 1.

[0071] The implementation principle of Example 2 is as follows: When the air wave therapy device is first used, the heating device 42 is used to heat the fluid entering the first pipe 4. If the temperature does not reach the preset temperature during the heating process, the limiting ring 434 is in an expanded state, and the movable part 4321 abuts against the inner wall of the limiting ring 434, preventing the fluid from passing through. When the temperature reaches the preset temperature (human body temperature), the limiting ring 434 shrinks to the extent that the movable part 4321 can disengage from the limiting ring 434, so that the fluid that reaches the specific temperature can pass through, further ensuring the comfort of the user of the air wave therapy device.

[0072] At the same time, when the liquid in the bladder 10 is discharged, outside air is pumped in through the second three-way valve 2. After being heated by the heating device 42, the outside air enters the bladder 10 at a temperature close to the human body temperature through the second one-way valve 43, ensuring the comfort of the user of the air wave therapy device.

[0073] After the liquid is discharged from the temperature control valve system, the movable part 4321 re-enters the limiting ring 434 under the action of the spring 433. The limiting ring 434 also gradually cools down and recovers, and the movable part 4321 abuts against the inner wall of the limiting ring 434 again.

[0074] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A temperature control valve system, characterized in that: The system includes a first three-way valve (1), a second three-way valve (2), a temperature sensor (3), a first pipeline (4), a second pipeline (5), a third pipeline (6), a delivery pump (7), and a control terminal; the first three-way valve (1) has a first outlet (11), a first inlet (12), and a second outlet (13), the first outlet (11) and the first inlet (12) being connected through the first pipeline (4); the temperature sensor (3) is located in the first pipeline (4); The second three-way valve (2) has a third outlet (21), a second inlet (22), and a third inlet (23). The second outlet (13) and the second inlet (22) are connected through the second pipe (5). The third outlet (21) is connected to the first pipe (4) through the third pipe (6). The connection point between the third pipe (6) and the first pipe (4) is located between the first outlet (11) and the temperature sensor (3). The third inlet (23) is connected to the outside. The delivery pump (7) is disposed on the first pipe (4) and located at the connection position between the third pipe (6) and the first pipe (4). The delivery pump (7) has a first delivery port, a second delivery port and a third delivery port. The first delivery port is connected to the first pipe (4), the second delivery port is connected to the first outlet (11), and the third delivery port is connected to the third outlet (21). The temperature sensor (3) is communicatively connected to the control terminal, which is used to control the opening and closing of the first outlet (11), the first inlet (12), the second outlet (13), the third outlet (21), the second inlet (22), and the third inlet (23) and their opening degree; the control terminal is also used to control the opening and closing of the first conveying port, the second conveying port, and the third conveying port. It also includes a first check valve (51), which is disposed in the second pipeline (5) and is used to prevent fluid from flowing from the second three-way valve (2) to the first three-way valve (1); The first pipe (4) is provided with a first mounting position (41), which is used to install the bladder (10), and the inner cavity of the bladder (10) is connected to the inner cavity of the first pipe (4); the second pipe (5) is provided with a second mounting position (52), which is used to install the cold water tank (9), and the inner cavity of the cold water tank (9) is connected to the inner cavity of the second pipe (5); It also includes a heating device (42) and a second check valve (43). The heating device (42) is disposed in the first pipeline (4) and is located between the delivery pump (7) and the temperature sensor (3). The second check valve (43) is disposed in the first pipeline (4) and is located between the temperature sensor (3) and the first mounting position (41). The second check valve (43) includes a valve body (431), a valve core (432), a spring (433), and a limiting ring (434). The valve core (432) includes a movable valve body (431), a valve core (432), a spring (433), and a limiting ring (434). The valve body (431) has a moving part (4321) and an abutting part (4322), the abutting part (4322) being connected to the moving part (4321) and both extending along the length of the valve body (431). The outer diameter of the abutting part (4322) is larger than the outer diameter of the moving part (4321). The moving part (4321) passes through the limiting ring (434) and abuts against the inner wall of the limiting ring (434). The limiting ring (434) includes a receiving bladder and a hydrogel sheet filled in the receiving bladder. The hydrogel sheet is made of PLGA-PEG-PLGA block copolymer.

2. The temperature control valve system according to claim 1, characterized in that: The inner wall of the valve body (431) has a first partition (4311) and a second partition (4312). The abutment (4322) and the spring (433) are located between the first partition (4311) and the second partition (4312). The end of the abutment (4322) near the movable part (4321) abuts against the first partition (4311). One end of the spring (433) abuts against the end of the abutment (4322) away from the movable part (4321), and the other end abuts against the second partition (4312). The limiting ring (434) is connected to the inner wall of the valve body (431) and extends along the length of the valve body (431).

3. The temperature control valve system according to claim 2, characterized in that: The limiting ring (434) has multiple through holes (4341) evenly distributed around its periphery; a rigid limiting cylinder (4342) is fixed to the wall of each through hole (4341); multiple limiting rods (4313) are fixed to the inner wall of the valve body (431), and the limiting cylinder (4342) is used for the limiting rods (4313) to pass through, with each limiting rod (4313) corresponding to one of the multiple through holes (4341); when the movable part (4321) abuts against the inner wall of the limiting ring (434), there is a gap between the end of the limiting rod (4313) and the end of the movable part (4321).

4. The temperature control valve system according to claim 3, characterized in that: Along the path from one end near the abutment (4322) to the other end, the outer diameter of the movable part (4321) gradually decreases to near zero.

5. The temperature control valve system according to claim 3, characterized in that: The end of the limiting cylinder (4342) away from the movable part (4321) protrudes from the outer wall of the limiting ring (434); the inner wall of the valve body (431) is provided with a through slot for the limiting cylinder (4342) to be inserted.

6. An air wave therapy device, employing the temperature control valve system as described in claim 1, characterized in that: It includes a water tank (9), a bladder (10) and the temperature control valve system; the water tank (9) is disposed in the second pipe (5) and is used to contain cold water with a temperature ≤35℃; the bladder (10) is installed in the first pipe (4) and is located between the temperature sensor (3) and the first three-way valve (1).

7. An air wave therapy device, employing a temperature control valve system as described in any one of claims 2 to 5, characterized in that: It includes a water tank (9), a bladder (10) and the temperature control valve system; the water tank (9) is disposed in the second pipe (5) and is used to contain cold water with a temperature ≤35℃; the bladder (10) is installed in the first pipe (4) and is located between the second one-way valve (43) and the first three-way valve (1).

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