Temperature control system and control method of small flow wearable thermostat

Abstract

The present invention relates to a temperature control system of a small-flow wearable thermostat suitable for liquid cooling clothing and a control method thereof, comprising: a thermostat body, a first drive pump, a second drive pump, a cold source and a liquid cooling clothing, wherein the cold source and the liquid cooling clothing are arranged outside the thermostat body, and a coolant circulation pipeline is connected in parallel between the cold source and the first drive pump and the second drive pump, and the coolant circulation pipeline at least comprises a first connecting pipeline, a second connecting pipeline and a third connecting pipeline which are independently arranged, and through the linkage control between the above-mentioned three connecting pipelines and the two drive pumps, the circulation loop formed by the above-mentioned can reduce the rotation speed of the second drive pump and increase the rotation speed of the first drive pump when the temperature of the cold source is low, and increase the rotation speed of the second drive pump and reduce the rotation speed of the first drive pump when the temperature of the cold source rises, so as to reduce the temperature of the coolant to the target temperature more quickly.

Description

Technical Field

[0001] The invention relates to a temperature controller, and in particular to a temperature control system and a control method thereof for a small-flow wearable temperature controller suitable for liquid cooling clothing. Background Art

[0002] Harsh high-temperature working environments exist in many industries. However, due to limitations in work scenarios or conditions, it is often not possible to provide workers in these industries with cooling measures such as air conditioning, so they often have to be under the threat of high temperatures.

[0003] At present, a more common approach is to provide workers in high-temperature working environments with liquid cooling clothing that can effectively alleviate the thermal discomfort caused by high temperatures to the human body and reduce the risk of heatstroke and heat stroke among workers working in high-temperature environments.

[0004] In the prior art, most liquid cooling suits directly use ice packs as cold sources, using water to circulate in the liquid cooling suit to cool the human body. When the ice pack is just added, the temperature of the coolant can be as low as 10°C or even lower. At high temperatures, an ice pack can last for 15-20 minutes.

[0005] However, the above-mentioned liquid cooling suits that directly use ice packs have an obvious disadvantage, that is, the temperature of the coolant in the liquid cooling suit cannot be controlled during the entire working process, and can only change as the ice melts, which is quite disadvantageous. For example, when the liquid cooling suit just starts to work, the coolant will enter the cooling pipeline at an extremely low temperature to participate in the heat exchange of the human body due to being fully cooled by the cold source. Too low a coolant temperature can easily cause local overcooling and cause discomfort to the human body. The uncontrolled coolant temperature not only makes the cooling capacity unable to meet the actual heat dissipation needs of the human body, but also reflects the low energy utilization, resulting in a shortened battery life.

[0006] A precise temperature control device and method for fluid circulation air-conditioning clothing disclosed in Chinese patent CN15568648A includes: a temperature controller, a cold source container and a liquid cooling suit, the temperature controller includes a housing and a water tank, a first drive pump, a second drive pump, and a main control board, the first drive pump is connected to the cold source container and the water tank respectively, the second drive pump is connected to the water tank and the liquid cooling suit respectively, the liquid cooling suit is connected to the cold source container and the water tank respectively, the water tank is provided with a temperature sensor, the main control board is electrically connected with an operator, and the temperature controller forms a hot and cold adjustable circulating water circuit with the cold source container and the liquid cooling suit through a pipeline. Therefore, the main control board can control the speed of the first drive pump according to the difference between the preset temperature and the actual temperature of the liquid in the water tank, and then the second drive pump pumps the constant temperature liquid in the water tank into the liquid cooling suit, so by accurately controlling the temperature of the liquid in the water tank, the precise temperature control of the temperature in the liquid cooling suit is achieved, so that the user's body temperature change when wearing the liquid cooling suit is very small and very comfortable.

[0007] Although the above scheme solves the problem that the coolant temperature of the liquid cooling suit cannot be controlled during the entire working process to a certain extent, due to the series connection of the drive pumps, when the temperature of the cold source is low, backflow may occur in the pipeline, that is, the cold water in the cold source flows back to the No. 5 mixing chamber, and when the temperature of the cold source is high, the No. 6 drive pump runs faster, while the No. 7 drive pump runs at a constant speed. The difference in flow rates between the two drive pumps becomes larger, which may cause the No. 6 drive pump to be overloaded, causing damage to the drive pump.

[0008] Therefore, there is an urgent need to design a small-flow wearable thermostat suitable for liquid cooling clothing and its control system and control method. Summary of the invention

[0009] The object of the present invention is to provide a temperature control system and a control method of a small-flow wearable thermostat suitable for liquid cooling clothing, which partially solves or alleviates the above-mentioned deficiencies in the prior art and can adjust the temperature of the coolant in the liquid cooling clothing by controlling the mixed temperature control mode of the driving pump group to achieve a temperature that is more comfortable for the human body.

[0010] In order to solve the above-mentioned technical problems, the present invention specifically adopts the following technical solutions:

[0011] The first aspect of the present invention is to provide a temperature control system of a small flow wearable thermostat suitable for liquid cooling clothing, comprising: a small flow wearable thermostat, a cold source and a liquid cooling clothing, wherein the flow wearable thermostat comprises: a thermostat body, a main control board arranged in the thermostat body, a first drive pump for pumping out the coolant in the liquid cooling clothing, and a second drive pump for pumping out the coolant in the cold source, the first drive pump and the second drive pump are connected in parallel through a coolant circulation pipeline arranged in the thermostat body, and are connected to the liquid cooling clothing and the cold source; the coolant circulation pipeline at least comprises a first connecting pipeline, a second connecting pipeline and a third connecting pipeline which are independently arranged; wherein the second connecting pipeline comprises: a first end connected to the output end of the second driving pump, a second end connected to the output end of the first driving pump; a third end connected to the input end of the liquid cooling clothing through a mixing chamber integrated with a temperature sensor, and a second three-way pipe connecting the above three ends;

[0012] The main control board controls the mixed temperature control mode of the second driving pump and the first driving pump according to the real-time temperature and the preset temperature threshold monitored by the temperature sensor, so as to pump the coolant in the mixing chamber that reaches the preset temperature threshold into the liquid cooling suit through the second connecting pipeline; wherein the mixed temperature control mode of the first driving pump and the second driving pump includes: a first mixed temperature control mode and a second mixed temperature control mode;

[0013] When in the first mixed temperature control mode, the first drive pump operates at a first target speed, and the second drive pump operates at a second target speed, and the second target speed is less than the first target speed; and when the temperature of the coolant in the mixing chamber reaches a preset temperature threshold, the main control board controls the first drive pump and the drive pump to switch from the first mixed temperature control mode to the second mixed temperature control mode. At this time, the speed of the second drive pump increases from the second target speed to the fourth target speed, and the speed of the first drive pump decreases from the first target speed to the third target speed, and the third target is less than the fourth target speed.

[0014] Preferably, the first connecting pipeline includes a first end connected to the output end of the liquid cooling suit, a second end connected to the input end of the cold source, a third end connected to the input end of the first driving pump, and a first three-way pipe respectively connected to the first end, the second end and the third end.

[0015] Preferably, one end of the third connecting pipeline is communicated with the input end of the second driving pump, and the second end is externally connected to the output end of the cold source.

[0016] Preferably, the cooling liquid circulation pipeline further comprises: a control valve, which is a one-way valve and is located at the second end of the first connecting pipeline connected to the input end of the cold source.

[0017] Preferably, the first three-way pipe adopts an electromagnetic control valve or an electric control valve.

[0018] Preferably, the second three-way pipe adopts an electromagnetic control valve or an electric control valve.

[0019] A second aspect of the present invention is to provide a control method for a temperature control system of a small flow wearable thermostat suitable for liquid cooling clothing, wherein the temperature control system adopts the above-mentioned temperature control system, and the control method comprises the following steps:

[0020] S11. Pre-configure the desired preset temperature threshold, and detect the actual temperature of the coolant in the mixing chamber in real time through the temperature sensor;

[0021] S12. The measured actual temperature is uploaded to the main control board, and the main control board calculates the target speeds of the first drive pump and the second drive pump connected in parallel in the thermostat according to the actual temperature and the preset temperature threshold through an intelligent temperature control algorithm;

[0022] S13. The main control board outputs the above-obtained target speed of the driving pump to the first driving pump and the second driving pump respectively arranged in parallel through PWM modulation signal, so as to control the mixed temperature control mode of the first driving pump and the second driving pump;

[0023] Wherein, the mixed temperature control mode of the first driving pump and the second driving pump includes: a first mixed temperature control mode and a second mixed temperature control mode;

[0024] When in the first mixed temperature control mode, the first drive pump operates at a first target speed, and the second drive pump operates at a second target speed, and the second target speed is less than the first target speed; and when the temperature of the coolant in the mixing chamber reaches the preset temperature threshold, the main control board controls the first drive pump and the drive pump to switch from the first mixed temperature control mode to the second mixed temperature control mode. At this time, the speed of the first drive pump is reduced from the first target speed to the third target speed, and the speed of the second drive pump is increased from the second target speed to the fourth target speed, and the third target is less than the fourth target speed.

[0025] Preferably, the intelligent temperature control algorithm comprises the following steps:

[0026] Calculate the difference between the measured actual temperature and the preset temperature threshold;

[0027] Substituting the difference between the actual liquid temperature calculated above and the preset temperature threshold into a preset first formula to obtain a target speed of the second driving pump;

[0028] The calculated target rotation speed of the second driving pump is substituted into a preset second formula to obtain the target rotation speed of the first driving pump.

[0029] Preferably, the first formula is specifically: Flow1 is the target speed of the second driving pump; wherein, e(t) is the difference between the actual coolant temperature and the preset temperature threshold, and Kp, Ki, and Kd are the algorithm coefficients of the PWM modulation signal.

[0030] Preferably, the second formula is specifically: Flow2=Flow-Flow1; wherein Flow is a preset flow rate of the coolant circulating in the liquid cooling suit; and Flow2 is a target rotation speed of the first driving pump.

[0031] Compared with the prior art, the beneficial effect of the present invention is that by coordinating the flow rates of the first drive pump and the second drive pump, two different hybrid temperature control modes are provided to achieve more flexible and efficient temperature control. Among them, the first hybrid temperature control mode is suitable for maintaining a stable state close to the target temperature, while the second hybrid temperature control mode is suitable for quickly reducing the coolant temperature to meet higher cooling requirements. Thereby, while ensuring sufficient cooling effect, the overall energy consumption is reduced, and users are provided with more accurate, efficient and stable temperature control, and the battery life is long.

[0032] Through three independent and parallel connecting pipelines (first connecting pipeline, second connecting pipeline and third connecting pipeline), different cooling modes can be selected according to different scenarios, such as using the first drive pump or the second drive pump alone, or using two drive pumps at the same time. Thus, a variety of operating configurations are provided, so that the system can adapt to various cooling needs. And by setting a one-way control valve at the second end connected to the input end of the cold source in the first connecting pipeline, it is ensured that the coolant can only flow from the cold source to the liquid cooling suit, and will not flow in the opposite direction. In order to protect the cold source from the influence of backflow and maintain the forward flow of the coolant in the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without paying creative labor.

[0034] Summary of reference numerals and symbols: 1. Temperature controller body; 2. First drive pump; 3. Second drive pump; 4. Cold source; 5. Liquid cooling suit; 6. Inner cavity; 7. Cooling liquid circulation pipeline; 71. First connecting pipeline; 72. Second connecting pipeline; 73. Third connecting pipeline; 74. First three-way pipe; 75 Second three-way pipe; 76. Control valve; 8. Main control board; 9. Blocking plate; 10. Temperature measuring chamber; 11. Control module; 12. PWM modulation signal generator; 13. Algorithm coefficient storage module; 14. Power management module.

[0035] Figure 1 A schematic diagram of an internal circulating water circuit structure of a thermostat according to an exemplary embodiment of the present invention;

[0036] Figure 2 A schematic diagram of water circulation in a thermostat according to an exemplary embodiment of the present invention;

[0037] Figure 3 It is a structural schematic diagram of a temperature controller according to an exemplary embodiment of the present invention;

[0038] Figure 4 is a functional module diagram of a main control board of a thermostat according to an exemplary embodiment of the present invention;

[0039] Figure 5 is a flow chart of a thermostat control method according to an exemplary embodiment of the present invention;

[0040] Figure 6The figure is a flow chart of an intelligent temperature control algorithm according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] Herein, suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings by themselves. Therefore, "module", "component" or "unit" can be used mixedly.

[0043] In this document, the terms "upper", "lower", "inner", "outer", "front", "back", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] The term "or" is generally intended to be inclusive (ie, "A or B" is intended to mean "A or B or both").

[0045] In this document, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Herein, "and / or" includes any and all combinations of one or more of the listed related items. Herein, "plurality" means two or more, that is, it includes two, three, four, five, etc.

[0047] Example 1: Reference Figure 1-Figure 3A small-flow wearable thermostat for liquid cooling clothing proposed in the present invention comprises: a thermostat body 1, a first driving pump 2, a second driving pump 3, and a mixing chamber 10, wherein an inner cavity 6 is opened in the thermostat body 1, the first driving pump 2 and the second driving pump 3 are both fixedly installed in the inner cavity 6, the second driving pump 3 is connected in parallel with the first driving pump 2 through a coolant circulation pipeline 7, and is externally connected to a liquid cooling clothing 5 and a cold source 4, that is, the cold source 4 and the liquid cooling clothing 5 are both connected to the thermostat body 1 through the coolant circulation pipeline 7, and the coolant circulation pipeline 7 is connected to the input and output ends of the first driving pump 2 and the second driving pump 3, and can be partially extended to the outside of the thermostat body 1 to be connected to the input and output ends of the liquid cooling clothing and the cold source.

[0048] Preferably, the coolant circulation pipeline 7 includes: a first connecting pipeline 71, a second connecting pipeline 72 and a third connecting pipeline 73, wherein the first connecting pipeline 71 has at least a first end connected to the output end of the liquid cooling suit 5, a second end connected to the input end of the cold source 4, and a third end connected to the input end of the first drive pump 2, and the above-mentioned three end points are connected through a first three-way pipe 74; the second connecting pipeline 72 has at least a first end connected to the output end of the first drive pump 2, a second end connected to the output end of the second drive pump 3, and a third end connected to the input end of the liquid cooling suit 5 through the temperature measuring chamber 10, and the above-mentioned three end points are connected through a second three-way pipe 75; the two ends of the third connecting pipeline 73 are respectively connected between the output end of the cold source 4 and the input end of the second drive pump 3.

[0049] The thermostat described in this embodiment can, on the one hand, connect the two drive pumps 2 and 3 in parallel through the design of the three connecting pipes 71, 72, and 73 in the thermostat body 1, thereby avoiding the overload problem caused by the different operating speeds of the two drive pumps when the two drive pumps are connected in series. Furthermore, different mixed temperature control modes can be selected according to actual needs (such as using the first drive pump 2 or the second drive pump 3 alone, or using both drive pumps at the same time) to meet the cooling needs in different scenarios.

[0050] On the other hand, the design of the inner cavity 6 can also be used to fix the first drive pump 2 and the second drive pump 3 together, thereby avoiding damage to the drive pump due to external factors, improving the stability and reliability of the system, and integrating the drive pump and connecting pipelines in the temperature controller body 1 to make the structure of the entire system more compact and convenient for maintenance and repair.

[0051] Reference Figure 3The cooling liquid circulation pipeline 7 further includes: a control valve 76, preferably a one-way valve, and is located at the second end of the first connecting pipeline 71 connected to the input end of the cold source 4. In this embodiment, by arranging the one-way control valve 76 and the second end of the first connecting pipeline 71 connected to the input end of the cold source 4, it is ensured that the cooling liquid can only flow from the cold source 4 to the liquid cooling suit 5, and will not flow in the opposite direction.

[0052] Specifically, the one-way control valve 76 is installed at a position (located after the coolant flows out of the cold source 4 and before it enters the rest of the system) so that when the second drive pump 3 stops working or when the system pressure reverses due to other reasons, the one-way control valve 76 is closed to prevent the coolant from flowing back to the cold source 4. This maintains the forward flow of the coolant in the system and protects the cold source 4 from the influence of reverse flow.

[0053] Compared with the precise temperature control device and method for fluid circulation air-conditioning clothing disclosed in Chinese patent CN15568648A, which uses two driving pumps in series and a three-way pipe cooling liquid circulation pipeline 7, this embodiment uses three independent connecting pipelines (first connecting pipeline 71, second connecting pipeline 72 and third connecting pipeline 73), and different cooling modes can be selected according to different scenarios, such as using the first driving pump 2 or the second driving pump 3 alone, or using two driving pumps at the same time. Thereby providing it with a variety of operating configurations, so that the system can adapt to various cooling needs.

[0054] Further, in the traditional series configuration, when the two driving pumps are running at different speeds, the slower driving pump may not be able to keep up with the flow of the faster driving pump, thereby causing overload. In the present embodiment, each connecting line can independently receive cooling liquid from its corresponding driving pump, so that even if one driving pump runs faster, it will not cause additional burden to the other driving pump, thereby ensuring the stable operation and efficient cooling of the system. And by arranging a one-way control valve 76 at the second end connected to the input end of the cold source 4 in the first connecting line 71, it is ensured that the cooling liquid can only flow from the cold source 4 to the liquid cooling suit 5, and will not flow in the reverse direction. To protect the cold source 4 from the influence of countercurrent, and to maintain the forward flow of the cooling liquid in the system.

[0055] Preferably, the first three-way pipe 74 can be provided in the form of an electromagnetic control valve or an electric control valve, and a temperature sensor is integrated in the first end of the first connecting line 71 connected to the output end of the liquid cooling suit 5, for real-time monitoring of the temperature of the cooling liquid flowing out of the liquid cooling suit 5. Furthermore, the main control board can also automatically adjust the opening and closing degree of the electromagnetic control valve according to the feedback signal of the temperature sensor in the first connecting line, so as to realize the switching of the following working modes:

[0056] One-way flow mode: In this mode, the valve of the first three-way pipe 74 will fully open the channel leading to the input end of the cold source 4, and at the same time close the channel leading to the first drive pump 2, so that the coolant can only flow from the output end of the liquid cooling suit 5 to the input end of the cold source 4, realizing a one-way circulation. For example, when the user just puts on the thermostat and connects it to the liquid cooling suit, due to the large temperature difference between the coolant in the liquid cooling suit and the coolant in the cold source, at this time, a large amount of coolant needs to be filled into the liquid cooling suit, so this flow mode is adopted.

[0057] Bidirectional circulation mode: In this mode, the valve of the first three-way pipe 74 will simultaneously open the channels leading to the input end of the cold source 4 and the second drive pump 3, so that the coolant can flow from the output end of the liquid cooling suit 5 to both the input end of the cold source 4 and the second drive pump 3, realizing bidirectional circulation. For example, when the thermostat is connected to the liquid cooling suit, and after a period of circulation, the temperature difference between the coolant in the liquid cooling suit and the coolant in the cold source is small, the coolant in the cold source needs to be mixed with the coolant in the liquid cooling suit and then filled into the liquid cooling suit, and this flow mode is adopted.

[0058] Bypass mode: In this mode, the valve of the first three-way pipe 74 will close the channel leading to the input end of the cold source 4, and at the same time fully open the channel leading to the second drive pump 3, so that the coolant can bypass the cold source 4 from the output end of the liquid cooling suit 5 and flow directly to the second drive pump 3, which is suitable for maintenance of the cold source 4 or use without additional cooling.

[0059] Preferably, the second three-way pipe 75 can also be set in the form of an electromagnetic control valve or an electric control valve, and a variable flow control device is set at the second end connected to the output end of the second drive pump 3 in the second connecting pipeline 72, for adjusting the amount of cooling liquid flowing to the first drive pump 2 as needed.

[0060] The above-mentioned embodiments can realize the following working modes according to the feedback signal of the temperature sensor and the intelligent temperature control algorithm: Flow balance mode: In this mode, the variable flow control device of the second three-way pipe 75 will dynamically adjust the amount of coolant flowing to the first drive pump 2 according to the needs of the system and the feedback signal of the temperature sensor. Priority control mode: In this mode, the system will preferentially deliver coolant to certain key parts through the variable flow control device of the second three-way pipe 75 according to the preset priority or the real-time instructions of the user. Energy-saving mode: In this mode, the variable flow control device of the second three-way pipe 75 will reduce the amount of coolant flowing to the first drive pump 2 to reduce the energy consumption of the system.

[0061] The working principle of the temperature controller in this embodiment is as follows: the second driving pump 3 pumps out the coolant with a first temperature T1 from the output end of the cold source 4 through the third connecting pipeline, and enters the mixing chamber 10 through the second three-way pipe 75 in the second connecting pipeline 72, and is finally pumped into the liquid cooling suit 5; at this time, due to the pressure balance, a negative pressure will be generated at the output end of the liquid cooling suit 5, and therefore, the coolant with a second temperature T2 (greater than T1) circulated in the liquid cooling suit 5 will be sucked in from the output end of the liquid cooling suit 5 through the first connecting pipeline 71 to balance the pressure, and the coolant with a second temperature T2 (greater than T1) circulated in the liquid cooling suit 5 will flow back to the cold source through the first three-way pipe 74 and the one-way valve 76 in the first connecting pipeline 71.

[0062] The first driving pump 2 sucks out the coolant with a second temperature T2 (greater than T1) after circulating in the liquid cooling suit 5 from the output end of the liquid cooling suit 5 through the first connecting pipeline 71, and then finally flows to the mixing chamber 10 through the second three-way pipe 75 in the second connecting pipeline 71, and then flows into the liquid cooling suit.

[0063] That is, the coolant in the cold source 4 and the coolant in the liquid cooling suit after circulation can be pumped into the mixing chamber through the second driving pump and the first driving pump respectively to be mixed. At the same time, in the mixing chamber, the temperature of the mixed coolant can be collected by the temperature sensor, so that the switch of the driving pump can be controlled according to the detected temperature, and then the mixing ratio of the coolant in the cold source 4 and the coolant in the liquid cooling suit after circulation can be controlled to adjust the temperature comfortable for the human body and achieve the purpose of temperature control.

[0064] Embodiment 2: A low-flow wearable thermostat for liquid cooling clothing proposed by the present invention further includes: a main control board 8, which is fixedly arranged in the inner cavity 6 and arranged side by side with the coolant circulation pipeline 7. A blocking plate 9 is arranged between the coolant circulation pipeline 7 and the main control board 8 to reduce the vibration transmitted to the main control board 8 and protect the main control board 8 from damage.

[0065] In this embodiment, the barrier plate 9 can be provided to reduce the vibration generated by the operation of the driving pump from being transmitted to the main control board 8, thereby protecting the main control board 8 from damage, extending its service life, and preventing heat conduction caused by changes in the temperature of the cooling liquid from affecting the normal operation of the main control board 8, thereby keeping the main control board 8 in an ideal working environment. At the same time, it can also serve as a shield to avoid affecting sensitive electronic components and prevent potential damage to the main control board 8 caused by humid environments and corrosive fluids, thereby ensuring the stability and long-term reliability of electronic components.

[0066] Preferably, the baffle plate 9 is arranged in a honeycomb structure so as to have good mechanical strength and durability.

[0067] In addition, the baffle plate 9 using the honeycomb structure has the following advantages compared to directly using a solid plate:

[0068] Sound absorption effect: The honeycomb structured baffle plate 9 can absorb and reduce the transmission of sound waves, further reducing the noise level during system operation.

[0069] Thermal insulation performance: The honeycomb structure provides good thermal insulation performance, effectively preventing heat from being transferred through the barrier plate 9, and protecting the main control board 8 from overheating.

[0070] Lightweight: Honeycomb structural materials generally have a lower density, which helps reduce the weight of the overall device and improve user comfort and portability.

[0071] Ventilation: Although the baffle plate 9 needs to isolate vibration and heat, the honeycomb structure is designed to allow air to circulate, helping to maintain airflow near the main control board 8 to avoid overheating.

[0072] See also Figure 4 Furthermore, the main control board 8 includes: a control module 11, a PWM modulation signal generator 12, an algorithm coefficient storage module 13 and a power management module 14. The power management module 14 is used to convert the external input power into a voltage level suitable for each component on the main control board 8, and distribute it to each module through a power line. The control module 11 is connected to the PWM modulation signal generator 12 through a data bus or a direct I / O port to send a control signal. The algorithm coefficient storage module 13 is connected to the control unit through a data bus. The algorithm coefficient storage module 13 is composed of a non-volatile memory, such as an EEPROM or a Flash memory, which is used to store the default and adjustable parameters required for system operation.

[0073] Correspondingly, based on the temperature controller in the above-mentioned embodiment 1 or 2, the present invention also provides a temperature control system, which includes the low-flow wearable temperature controller of the above-mentioned embodiment, as well as a cold source 4 and a liquid cooling suit 5, wherein the first drive pump 2 and the second drive pump 3 in the low-flow wearable temperature controller are connected to the liquid cooling suit 5 and the cold source 4 through the above-mentioned coolant circulation pipeline 7.

[0074] Embodiment 3: Based on the above-mentioned temperature controller or temperature control system, refer to Figure 5 The present invention proposes a control method for a small flow wearable thermostat or a temperature control system thereof suitable for liquid cooling clothing, comprising the following steps:

[0075] The target coolant temperature (i.e., the preset temperature threshold) is preset, and the actual temperature of the coolant in the mixing chamber 10 is detected in real time by the temperature sensor provided in the mixing chamber of the above-mentioned thermostat;

[0076] The actual temperature measured above is uploaded to the main control board 8. The main control board 8 receives the actual temperature and the target coolant temperature, and calculates the target speed of the driving pump group in the temperature controller (including the target speed of the first driving pump and the target speed of the second driving pump) through the intelligent temperature control algorithm;

[0077] Then, the main control board 8 outputs the above-obtained target speed of the driving pump to the driving pump group through the PWM modulation signal, so as to control the driving pump group to work in the first mixed temperature control mode or the second mixed temperature control mode;

[0078] The first mixed temperature control mode and the second mixed temperature control mode are respectively dominated by the first drive pump 2 in the drive pump group (i.e., the speed of the first drive pump is greater than the speed of the second drive pump) and the second drive pump 3 (i.e., the speed of the first drive pump is less than the speed of the second drive pump);

[0079] Specifically, when it is in the first hybrid temperature control mode, the first drive pump 2 runs at a first target speed, and the second drive pump 3 runs at a second target speed, and the second target speed is less than the first target speed (and the sum of the first target speed and the second target speed is the flow rate of the coolant circulation in the liquid cooling suit); when the actual temperature of the coolant in the mixing chamber 10 reaches the preset temperature threshold, the main control board 8 controls the drive pump group to switch from the first hybrid temperature control mode to the second hybrid temperature control mode, so that the speed of the first drive pump 2 is reduced from the first target speed to the third target speed, and the speed of the second drive pump 3 will increase from the second target speed to the fourth target speed (as above, the sum of the third target speed and the fourth target speed is the flow rate of the coolant circulation in the liquid cooling suit).

[0080] For example, when the user just adds the cold source 4, due to the low temperature of the cold source 4, only a small amount of cold water is needed to prepare the coolant of the preset temperature threshold. At this time, the second drive pump 3 has a low rotation speed, the first drive pump 2 has a fast rotation speed, and the coolant circulation in the liquid cooling suit 5 is dominated by the first drive pump 2; and as the user uses it, the temperature of the coolant in the liquid cooling suit gradually increases, and a large amount of cold water is needed to prepare the coolant of the preset temperature threshold. At this time, the second drive pump 3 has a fast rotation speed, the first drive pump 2 has a low rotation speed, and the coolant circulation in the liquid cooling suit 5 is dominated by the second drive pump 3.

[0081] Reference Figure 6 Preferably, the intelligent temperature control algorithm comprises the following steps:

[0082] Calculate the difference between the measured actual temperature and the preset temperature threshold;

[0083] Substituting the difference between the actual temperature calculated above and the preset temperature threshold into the preset first formula to obtain the flow rate Flow1 of the second driving pump 3;

[0084] The flow rate of the second driving pump 3 calculated above is substituted into the preset second formula to obtain the flow rate Flow2 of the first driving pump 2 .

[0085] Furthermore, the above first formula is specifically:

[0086]

[0087] Wherein, e(t) is the difference between the actual coolant temperature and the preset temperature threshold, and Kp, Ki, and Kd are the algorithm coefficients of the PWM modulation signal.

[0088] Furthermore, the second formula above is specifically:

[0089] Flow2=Flow-Flow1

[0090] Here, Flow is the preset flow rate of the coolant circulating in the liquid cooling suit 5 .

[0091] The thermostat control method described in this embodiment can, on the one hand, monitor the actual temperature in real time and compare it with the preset target temperature, and then accurately adjust the two mixed temperature control modes of the driving pump group by the intelligent temperature control algorithm to achieve accurate control of the circulating temperature of the coolant in the liquid cooling suit 5. Among them, the selection of the above two mixed temperature control modes is based on the premise that the flow rate of the circulating flow of the coolant in the liquid cooling suit is fixed, and is dynamically adjusted according to the difference between the actual temperature of the coolant in the mixing chamber and the preset temperature threshold.

[0092] On the other hand, as the user's use environment and conditions change (such as the increase in the temperature of the cold source 4), the intelligent temperature control algorithm can dynamically adjust the flow rate of the first drive pump 2 and the second drive pump 3, optimize the working mode of the drive pump, reduce the overall energy consumption, and ensure sufficient cooling effect, so that the system can maintain efficient cooling performance under different working conditions. And through the setting of the PWM modulation signal, the drive pump speed can be smoothly adjusted to avoid sudden impact when the drive pump starts and stops, thereby improving the reliability and stability of the system.

[0093] Specifically, when the actual temperature of the coolant in the mixed chamber is close to the preset temperature threshold (for example, when the difference between the two is less than the preset difference threshold), or when the temperature of the cold source 4 is low (for example, when the temperature of the cold source is lower than the preset minimum temperature threshold, preferably, a corresponding temperature sensor can be set in the cold source, and the collected temperature is sent to the above-mentioned main control board), the system automatically selects the first mixed temperature control mode. In this mode, the speed of the second drive pump 3 will be lower, while the speed of the first drive pump 2 will be higher. In order to maintain the coolant temperature of the liquid cooling suit 5 in a relatively ideal state, while avoiding excessive cooling (for example, lower than the preset temperature threshold) due to the filling of more low-temperature coolant, to ensure energy efficiency and comfort. When the actual temperature is far from the preset temperature threshold, or the temperature of the coolant stored in the cold source 4 rises, and more cooling effect is needed, the system automatically switches to the second mixed temperature control mode. In this mode, the speed of the second drive pump 3 will increase, while the speed of the first drive pump 2 will decrease, so as to reduce the coolant temperature in the mixed chamber to the preset temperature threshold more quickly.

[0094] In summary, this embodiment can adjust the working state of the driving pump according to actual usage and environmental changes, thereby achieving more accurate and efficient temperature control. And by intelligently selecting different hybrid temperature control modes, the temperature control system of the liquid cooling suit 5 can maintain good performance under different cooling requirements while optimizing energy consumption and user experience.

[0095] At the same time, compared with the temperature regulation method disclosed in Chinese patent CN109171036A, which directly controls the refrigerant circulation speed by only a single drive pump in a portable intelligent refrigeration clothing for the elderly, this embodiment provides two different hybrid temperature control modes by coordinating the flow rates of the first drive pump 2 and the second drive pump 3 to achieve more flexible and efficient temperature control. Among them, the first hybrid temperature control mode is suitable for maintaining a stable state close to the target temperature, while the second hybrid temperature control mode is suitable for quickly reducing the refrigerant temperature to meet higher cooling requirements. Thereby reducing the overall energy consumption while ensuring sufficient cooling effect, and providing users with more accurate, efficient and stable temperature control.

[0096] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0097] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a computer terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0098] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A temperature control system for a small flow wearable thermostat suitable for liquid cooling clothing, characterized in that: include: A low-flow wearable thermostat, a cold source (4) and a liquid cooling suit (5), wherein the low-flow wearable thermostat comprises: a thermostat body (1), a main control board (8) arranged in the thermostat body (1), a first drive pump (2) for pumping out the coolant in the liquid cooling suit (5), and a second drive pump (3) for pumping out the coolant in the cold source (4), wherein the first drive pump (2) and the second drive pump (3) are connected in parallel via a coolant circulation pipeline (7) arranged in the thermostat body (1) and connected to the liquid cooling suit (5). The cooling liquid circulation pipeline (7) at least comprises a first connecting pipeline (71), a second connecting pipeline (72) and a third connecting pipeline (73) which are independently arranged; wherein the second connecting pipeline (72) comprises: a first end connected to the output end of the second driving pump (3); a second end connected to the output end of the first driving pump (2); a third end connected to the input end of the liquid cooling suit (5) via a mixing chamber (10) with an integrated temperature sensor, and a second three-way pipe (75) connecting the above three ends; The main control board (8) controls the mixed temperature control mode of the second drive pump (3) and the first drive pump (2) according to the real-time temperature monitored by the temperature sensor and the preset temperature threshold, so as to pump the coolant in the mixing chamber (10) that reaches the preset temperature threshold into the liquid cooling suit (5) through the second connecting pipeline (72); wherein the mixed temperature control mode of the first drive pump (2) and the second drive pump (3) includes: a first mixed temperature control mode and a second mixed temperature control mode; The first connecting pipeline (71) comprises a first end connected to the output end of the liquid cooling suit (5), a second end connected to the input end of the cold source (4), a third end connected to the input end of the first driving pump (2), and a first three-way pipe (74) respectively connected to the first end, the second end and the third end; one end of the third connecting pipeline (73) is connected to the input end of the second driving pump (3), and the second end is externally connected to the output end of the cold source (4); When in the first mixed temperature control mode, the first drive pump (2) operates at a first target speed, and the second drive pump (3) operates at a second target speed, and the second target speed is less than the first target speed; and when the temperature of the coolant in the mixed chamber reaches a preset temperature threshold, the main control board controls the first drive pump and the drive pump to switch from the first mixed temperature control mode to the second mixed temperature control mode, at which time the speed of the second drive pump (3) increases from the second target speed to a fourth target speed, and the speed of the first drive pump (2) decreases from the first target speed to a third target speed, and the third target is less than the fourth target speed.

2. The temperature control system of a small flow wearable thermostat suitable for liquid cooling clothing according to claim 1, characterized in that: The cooling liquid circulation pipeline (7) further comprises: a control valve (76), wherein the control valve (76) is a one-way valve and is located at the second end of the first connecting pipeline (71) connected to the input end of the cold source (4).

3. The temperature control system of a small flow wearable thermostat suitable for liquid cooling clothing according to claim 1, characterized in that: The first three-way pipe (74) adopts an electromagnetic control valve or an electric control valve.

4. The temperature control system of a small flow wearable thermostat suitable for liquid cooling clothing according to claim 1, characterized in that: The second three-way pipe (75) adopts an electromagnetic control valve or an electric control valve.

5. A control method for a temperature control system of a small flow wearable thermostat suitable for liquid cooling clothing, characterized in that: Based on the temperature control system according to any one of claims 1 to 4, the control method comprises the following steps: S11. Pre-configure the desired preset temperature threshold, and detect the actual temperature of the coolant in the mixing chamber in real time through the temperature sensor; S12. The measured actual temperature is uploaded to the main control board, and the main control board calculates the target speeds of the first drive pump and the second drive pump connected in parallel in the thermostat according to the actual temperature and the preset temperature threshold through an intelligent temperature control algorithm; S13. The main control board outputs the target speed of the driving pump obtained above to the first driving pump and the second driving pump respectively arranged in parallel through PWM modulation signal to control the mixed temperature control mode of the first driving pump and the second driving pump; Wherein, the mixed temperature control mode of the first driving pump and the second driving pump includes: a first mixed temperature control mode and a second mixed temperature control mode; When in the first mixed temperature control mode, the first drive pump operates at a first target speed, and the second drive pump operates at a second target speed, and the second target speed is less than the first target speed; and when the temperature of the coolant in the mixing chamber reaches the preset temperature threshold, the main control board controls the first drive pump and the drive pump to switch from the first mixed temperature control mode to the second mixed temperature control mode. At this time, the speed of the first drive pump is reduced from the first target speed to the third target speed, and the speed of the second drive pump is increased from the second target speed to the fourth target speed, and the third target is less than the fourth target speed.

6. The control method of the temperature control system of the small flow wearable thermostat suitable for liquid cooling clothing according to claim 5, characterized in that: The intelligent temperature control algorithm includes the following steps: Calculate the difference between the measured actual temperature and the preset temperature threshold; Substituting the difference between the actual liquid temperature calculated above and the preset temperature threshold into a preset first formula to obtain a target speed of the second driving pump; The calculated target rotation speed of the second driving pump is substituted into a preset second formula to obtain the target rotation speed of the first driving pump.

7. The control method of the temperature control system of the small flow wearable thermostat suitable for liquid cooling clothing according to claim 6, characterized in that: The first formula is specifically: ; is the target speed of the second driving pump; wherein, is the difference between the actual coolant temperature and the preset temperature threshold, , , It is the algorithm coefficient of PWM modulation signal.

8. The control method of the temperature control system of the small flow wearable thermostat suitable for liquid cooling clothing according to claim 7, characterized in that: The second formula is specifically: ;in, The flow rate of the coolant circulating in the pre-set liquid cooling suit; is the target rotation speed of the first driving pump.

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