Liquid treatment device and method of controlling a liquid treatment device

Abstract

The application provides a liquid treatment device and a control method thereof, the liquid treatment device comprising: a heater; a water-cooled heat exchanger comprising a first water circuit and a second water circuit which exchange heat with each other, the second water circuit being connected with an outlet of the heater; a liquid supply assembly; a parameter monitoring device comprising a first temperature detection device for detecting the temperature of liquid in the liquid supply assembly and / or the inlet of the first water circuit; a shunt control device comprising an inlet and a first shunt branch and a second shunt branch, the inlet being connected with the outlet of the second water circuit, the shunt control device being used for controlling the on-off of the inlet and the two branches according to the parameters of the monitoring device; and a phase change device connected with the second shunt branch and used for heat exchanging with the liquid flowing out of the second shunt branch. According to the scheme, when the heat exchange demand is not high, the water-cooled heat exchanger can be used for heat exchanging, and when the heat exchange demand is high, the phase change device can be used for correcting the outlet water temperature, so that the control precision of the outlet water temperature can be improved, and the fluctuation of the outlet water temperature can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of household appliances, in particular to a liquid processing device and a control method of the liquid processing device. BACKGROUND

[0002] In daily life, people have the habit of drinking cold boiled water. Now the technology can quickly heat the hot water, but it is difficult to quickly cool the boiling water to drinkable water. The existing scheme has the following implementation ways: 1. The user needs to heat the water to a certain degree; 2. The pipe heat exchanger is used to cool the boiling water; the scheme needs a long pipe, high cost and large volume. According to experience and research data, water at about 50℃ is the most suitable temperature for people to drink.

[0003] Therefore, how to propose a liquid processing device with simple structure, small volume, which can quickly cool the boiled water to the suitable drinking temperature range, and the cooling method is safe and non-toxic, and the selected phase change insulation material is also widely available, has become a technical problem to be solved at present. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art or related art.

[0005] Therefore, one purpose of the present application is to provide a liquid processing device.

[0006] Another purpose of the present application is to provide a control method of the liquid processing device.

[0007] To achieve the above purpose, the technical scheme of the first aspect of the present application provides a liquid processing device, comprising: a heater capable of heating the liquid flowing therethrough; a water-cooled heat exchanger comprising a first water path, a second water path and a heat exchange part, the heat exchange part being arranged between the first water path and the second water path, the first water path and the second water path being heat exchanged through the heat exchange part, the second water path being connected with the outlet of the heater; a liquid supply assembly; a parameter monitoring device for monitoring the parameters of the liquid processing device, the parameter monitoring device comprising a first temperature detection device arranged corresponding to the outlet of the liquid supply assembly and / or the inlet of the first water path for detecting the temperature of the liquid in the liquid supply assembly and / or the temperature of the liquid at the inlet of the first water path; a shunt control device comprising a shunt control device inlet and a first shunt branch and a second shunt branch capable of being connected and disconnected with the shunt control device inlet, the shunt control device inlet being connected with the outlet of the second water path, the shunt control device being connected with the parameter monitoring device for controlling the on-off between the inlet of the shunt control device and the first shunt branch and the second shunt branch according to the parameters of the parameter monitoring device; a phase change device connected with the second shunt branch and capable of heat exchanging the liquid flowing out of the second shunt branch.

[0008] The liquid treatment device provided by the technical scheme of the application comprises a liquid supply assembly, a heater, a water-cooled heat exchanger, a flow distribution control device, a parameter monitoring device and a phase change device. The liquid supply assembly serves as a supply source of water or the like to provide the required water or the like to the heater or the water-cooled heat exchanger. The water-cooled heat exchanger comprises a first water path, a second water path and a heat exchange part, and the second water path is connected to the outlet of the heater. The phase change device is connected to the outlet of the second water path, and the phase change device comprises a phase change material. When the liquid in the second water path passes through the phase change device, the phase change material exchanges heat with the liquid in the second water path, thereby cooling or chilling the liquid in the second water path. The parameter monitoring device comprises a first temperature detection device, which detects the temperature of the liquid supply or the inlet of the first water path, and selects the flow distribution according to the temperature value. If the temperature of the liquid supply is too high, the liquid must pass through the phase change device, which can compensate for the low heat exchange efficiency of the water-cooled heat exchanger due to the high temperature of the liquid supply, thereby improving the overall heat exchange efficiency of the liquid device, achieving small fluctuations and improving the accuracy of temperature control. Of course, the parameter monitoring device can also be used to monitor other parameters such as temperature, water flow and time, and then determine whether the liquid in the second water path needs to be cooled again according to the monitored other parameters and the temperature of the liquid supply. That is, the application considers the influence of the temperature of the liquid supply when determining the flow direction of the water after the heat exchange of the water-cooled heat exchanger and after the flow distribution control device. Instead of only considering the temperature of the outlet of the heater. Because the water-cooled heat exchanger is greatly affected by the temperature of the liquid flowing into the outlet of the liquid supply assembly or the first water path, that is, the temperature of the liquid in the outlet of the liquid supply assembly or the first water path will directly affect the heat exchange effect of the water-cooled heat exchanger, or will directly determine the temperature of the heat-exchanged liquid flowing out of the second water path. Therefore, the application gives priority to the temperature of the outlet of the liquid supply assembly and / or the inlet of the first water path when determining whether to use the phase change device for heat exchange, so that the temperature can be controlled more accurately.

[0009] When the temperature of the liquid supply is greater than or equal to the first threshold value, the inlet of the flow distribution control device is connected to the second flow distribution branch to cool through the phase change device. Further, the first threshold value is 30℃ and less than or equal to 37℃.

[0010] In the technical solution, the first threshold value should be less than 37 DEG C and greater than or equal to 30 DEG C. Since the water-cooled heat exchanger uses the liquid flowing out of the liquid supply assembly to exchange heat with the liquid flowing out of the heater, and the temperature of the liquid flowing out of the heater is definitely 100 DEG C boiling water, the temperature detected by the temperature detection device will directly affect the heat exchange effect of the water-cooled heat exchanger. If the first threshold value is set to 35 DEG C, when the temperature detected by the temperature detection device is higher than the first threshold value 35 DEG C, it is predicted that the temperature of the liquid flowing out of the second waterway after heat exchange is relatively high, and cannot meet the direct drinking requirement, therefore, the liquid in the second waterway needs to flow into the second shunt branch and then into the phase change device for secondary cooling, so that the liquid can be discharged after reaching the appropriate temperature.

[0011] In addition, the above liquid treatment device provided by the application can form a double heat exchange device through the water-cooled heat exchanger and the phase change device, and can quickly cool the boiling liquid to the required temperature. Compared with the cooling mode of only setting the water-cooled heat exchanger, it needs a longer heat exchange pipeline to directly reduce to 45 DEG C. In the application, the water-cooled heat exchanger and the phase change device are set to reduce the heat exchange requirement of the water-cooled heat exchanger, so the pipeline of the water-cooled heat exchanger can be shortened, and a water-cooled heat exchanger with lower efficiency can be selected. In this way, the volume of the water-cooled heat exchanger can be reduced, and the cost of the water-cooled heat exchanger can be reduced, thereby making the overall volume of the product smaller and the cost lower. At the same time, the temperature of the outlet water is kept near the phase change temperature by using the phase change material for temperature control, thereby ensuring that the outlet water temperature is controllable. When using a water-cooled heat exchanger alone, the influence of the environment temperature on the liquid temperature is large, and the water-cooled heat exchanger heat exchange temperature has a certain deviation, so the outlet water temperature of the single water-cooled heat exchanger is not very stable. At the same time, the single water-cooled heat exchanger is limited by the structure size and efficiency, and cannot cool the boiling water to below 50 DEG C. By using the additional phase change device, the outlet water temperature can be further reduced to below 50 DEG C, so that the outlet water temperature of the device is more suitable for human drinking. In addition, since the temperature difference between the boiling water and the normal temperature water is large before water convection heat exchange, the water-cooled heat exchange efficiency is high; and the phase change device uses the constant phase change temperature characteristic of the phase change material, and the low temperature difference heat exchange efficiency is higher than that of the water-cooled heat exchanger, so the combination of the water-cooled heat exchanger in front and the phase change device at the back can further improve the cooling efficiency. Furthermore, by setting the parameter detection device and the shunt control device, the heat exchange efficiency of the water-cooled heat exchanger can be determined based on the temperature before the water-cooled heat exchanger, so that whether the hot water after the water-cooled heat exchange needs to be further cooled by the phase change device can be determined based on the heat exchange efficiency of the water-cooled heat exchanger. In this way, the influence of the liquid supply temperature can be reduced, the outlet liquid temperature can be more controllable and stable, the boiling water or beverage can be prevented from being excessively cooled due to the too low liquid supply temperature, and the cooling deficiency caused by the too high liquid supply temperature and the low heat exchange efficiency of the water-cooled heat exchanger can be avoided, thereby the user required temperature cannot be output.

[0012] The device can be applied in a non-continuous drinking water system, and the boiling water is rapidly cooled by using the phase change material to store heat and the environment to dissipate heat. The device has the characteristics of no additional energy consumption in the cooling process, simple structure, high efficiency, and reusability, and has a very good market application prospect and value.

[0013] The phase change cooling module has the characteristics of rapidly absorbing a large amount of heat at a constant temperature, and can rapidly store the heat of high-temperature hot water in the phase change material assembly, and the temperature of the phase change material is not higher than the phase change temperature point, thereby ensuring the continuous heat exchange process until the temperature of the hot water is balanced with the temperature of the phase change material. The phase change material is a solid-liquid phase change material, and the phase change temperature is between 40-45℃, such as paraffin composite phase change material, salt material, etc.

[0014] In the above technical solution, the parameter monitoring device includes a second temperature detection device for detecting the liquid temperature at the outlet of the second waterway, and / or the liquid temperature at the inlet of the shunt control device, and / or the inlet temperature of the heater.

[0015] In the technical solution, the parameter monitoring device includes a second temperature detection device, which can be set at a corresponding position according to the temperature to be monitored. For example, it can be set at the inlet of the shunt control device and / or the outlet of the second waterway to detect the temperature after the water-cooled heat exchanger exchanges heat. For example, it can be set at the inlet of the heater to detect the temperature of the heater inlet, so as to judge the fluctuation of the inlet liquid temperature or the efficiency of the water-cooled heat exchanger. By detecting the inlet temperature of the heater, the outlet temperature of the water-cooled heat exchanger or the fluctuation of the outlet temperature can be predicted. If the inlet temperature of the heater is high, it is predicted that the cooling efficiency of the water-cooled heat exchanger is low at this time, and the shunt to the phase change device helps to ensure the stability and accuracy of the outlet water temperature of the liquid treatment device, and fully utilizes the efficiency of the water-cooled heat exchanger and the phase change device. Specifically, when the second temperature detection device detects a low temperature, the boiling water can be cooled to a suitable drinking temperature only by the water-cooled heat exchanger, and the hot water after the heat exchange of the water-cooled heat exchanger is directly output through the first shunt branch to avoid excessive cooling. When the second temperature detection device detects a high temperature, the boiling water cannot be cooled to a suitable drinking temperature only by the water-cooled heat exchanger. Therefore, the shunt control device can be controlled to connect the phase change device to the waterway, so that the liquid after the heat exchange of the water-cooled heat exchanger flows from the second waterway into the second shunt branch and enters the phase change device, thereby playing a role of secondary cooling of the liquid in the second shunt branch.

[0016] In the technical solution, the second temperature detection device is used to detect the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device; the shunt control device is connected with the second temperature detection device, and when the temperature detected by the second temperature detection device is greater than or equal to a second threshold value, such as a second temperature value or a second preset temperature range, the shunt control device is controlled to be in communication with the second shunt branch at the inlet, and when the temperature detected by the second temperature detection device is less than the second temperature value or less than the second preset temperature range, the shunt control device is controlled to be disconnected from the second shunt branch at the inlet.

[0017] In the technical solution, the shunt control device is connected with the second temperature detection device to control the conduction of the loop inside the shunt control device according to the temperature. The second temperature detection device is arranged at the outlet of the second waterway and / or the inlet of the shunt control device, which is used to monitor the cooling effect of the heat exchanger. If the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device is too high, it indicates that the heat exchange effect of the heat exchanger is poor, so the temperature of the water flowing out of the second waterway is relatively high, or the temperature fluctuation is relatively large. Therefore, at this time, the controller controls the shunt control device to be in conduction with the second shunt branch at the inlet, so that the liquid in the second waterway flows into the second shunt branch and then flows into the phase change device to be cooled twice, so that the liquid is discharged after reaching the appropriate temperature. Conversely, if the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device is not too high, it indicates that the heat exchange effect of the heat exchanger is good, so the temperature of the water flowing out of the second waterway is relatively low, or the temperature fluctuation is relatively small. Therefore, at this time, the controller controls the shunt control device to be in conduction with the first shunt branch at the inlet, so that the liquid in the second waterway is directly discharged without passing through the phase change device.

[0018] Further, the second temperature value is greater than or equal to 50℃ and less than or equal to 60℃.

[0019] In the technical solution, the second preset temperature range should be less than 60℃ and greater than or equal to 50℃. Since the water-cooled heat exchanger uses the liquid flowing out of the liquid supply assembly to exchange heat with the liquid flowing out of the heater, and the temperature of the liquid flowing out of the heater is definitely 100℃ boiling water, the temperature detected by the second temperature detection device will directly affect the heat exchange effect of the water-cooled heat exchanger. If the first preset threshold value is set to 50℃, when the liquid temperature detected by the second temperature detection device is higher than the first preset threshold value 50℃, it indicates that the temperature of the liquid flowing out of the second waterway after heat exchange is relatively high, and it cannot be directly drunk, so the liquid in the second waterway needs to flow into the second shunt branch and then flow into the phase change device to be cooled twice, so that the liquid is discharged after reaching the appropriate temperature. When the liquid temperature detected by the second temperature detection device is lower than the first preset threshold value 50℃, the water-cooled heat exchanger can exchange the liquid flowing out of the second waterway to the appropriate temperature, so that the user can directly drink it.

[0020] In the above technical solution, the second temperature detection device is configured to detect the temperature of the outlet of the second waterway or the liquid temperature W2 at the inlet of the shunt control device. When W2 is greater than or equal to a preset temperature threshold, the inlet of the shunt control device is connected to the second shunt branch. The outlet water set temperature of the liquid treatment device is W0. When |W2-W0| is greater than or equal to a third temperature value or a third preset temperature range, the inlet of the shunt control device is connected to the second shunt branch. When |W2-W0| is less than the third temperature value or the third preset temperature range, the inlet of the shunt control device is disconnected from the second shunt branch. Alternatively, the shunt control device is configured to connect the inlet of the shunt control device to the second shunt branch when the second temperature detection device detects that the temperature W2 is greater than or equal to a fourth temperature value or a fourth preset temperature range. When the second temperature detection device detects that the temperature W2 is less than the fourth temperature value or the fourth preset temperature range, the inlet of the shunt control device is disconnected from the second shunt branch.

[0021] In this technical solution, whether to pass through the phase change device for heat exchange can be determined based on the temperature of the outlet of the second waterway or the liquid temperature W2 at the inlet of the shunt control device. That is, the second temperature detection device is configured to determine whether the temperature of the outlet of the second waterway or the inlet of the shunt control device is too high. If it is too high, the liquid needs to pass through the phase change device. If it is too low, the liquid does not need to pass through the phase change device. For example, the outlet water set temperature of the liquid treatment device is W0. When |W2-W0| is greater than or equal to a third temperature value or a third preset temperature range, it indicates that the set temperature and the temperature after the first heat exchange differ greatly, so the liquid needs to pass through the phase change device for heat exchange. Otherwise, the liquid does not need to pass through the phase change device for heat exchange, but can be directly discharged. Of course, a fourth temperature value or a fourth preset temperature range can be set to determine whether the temperature W2 of the outlet of the second waterway or the inlet of the shunt control device is too high, so as to determine whether the liquid needs to pass through the phase change device. Further, the third temperature value is 4℃, 5℃ or 7℃. Because the difference threshold of |W2-W0| is less than 7℃, the outlet water temperature is within the preset outlet water temperature fluctuation range at this time, so the phase change module is not needed for secondary cooling, the reuse of the phase change material is promoted, the utilization efficiency of the phase change material is improved, and the technical effects of cooling and temperature stabilization of the phase change device are ensured. In another solution, when the liquid temperature in the second waterway and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to a fifth threshold, such as a fifth temperature value or a fifth preset temperature range, it indicates that the liquid flowing out of the second waterway after the first heat exchange is too high to be directly drunk. Therefore, the liquid in the second waterway needs to flow into the second shunt branch and then into the phase change device for secondary cooling.

[0022] The fifth temperature value or the fifth preset temperature range is greater than or equal to 50 DEG C and less than or equal to 60 DEG C. Since the water-cooled heat exchanger uses the liquid flowing out of the liquid supply assembly to exchange heat with the liquid flowing out of the heater, and the temperature of the liquid flowing out of the heater is certainly 100 DEG C boiling water, the temperature detected by the second temperature detection device will directly affect the heat exchange effect of the water-cooled heat exchanger. If the fifth temperature value is set to 50 DEG C, when the liquid temperature detected by the second temperature detection device is higher than the fifth temperature value 50 DEG C, it means that the temperature of the liquid flowing out of the second waterway after heat exchange is relatively high, and it cannot meet the direct drinking requirement, therefore, it is necessary to make the liquid in the second waterway flow into the second shunt branch and then flow into the phase change device, so as to perform secondary cooling on the liquid and make the liquid reach the suitable temperature before being discharged. When the liquid temperature detected by the second temperature detection device is lower than the fifth temperature value 50 DEG C, the water-cooled heat exchanger can exchange heat of the liquid flowing out of the second waterway to the suitable temperature, so that the user can directly drink.

[0023] In the above technical solution, the parameter monitoring device further comprises: a time length detection device, configured to detect the continuous working time length of the water-cooled heat exchanger and / or the continuous working time length of the phase change device, and / or to detect the intermittent time length T3 of the liquid treatment device within the first preset time length; a counting device, configured to calculate the number N1 of times that the inlet temperature of the heater is greater than or equal to the second threshold value within the first preset time length, to calculate the continuous number N2 of times that the inlet temperature of the heater is greater than or equal to the second threshold value within the second preset time length, to calculate the number N3 of times that the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to the third threshold value within the third preset time length, to calculate the continuous number N4 of times that the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to the third threshold value within the fourth preset time length, and / or to calculate the intermittent time length of the liquid treatment device within the tenth preset time length and / or the eleventh preset time length, and / or to calculate the number N5 of times that the third intermittent time length T6 of the liquid treatment device within the twelfth preset time length is less than or equal to the third target time length, and / or to calculate the sum N6 of the continuous number of times that the fourth intermittent time length T7 of the liquid treatment device within the thirteenth preset time length is less than or equal to the fourth target time length; a flow detection device, configured to detect the water discharge amount of the liquid treatment device; and the shunt control device is specifically configured to control the on-off between the inlet of the shunt control device and the first shunt branch and the second shunt branch according to the parameters monitored by at least one of the second temperature detection device, the time length detection device, the counting device and the flow detection device when the temperature detected by the first temperature detection device is less than the first threshold value.

[0024] In the technical solution, the parameter monitoring device further comprises a time length detection device, a flow detection device, a timing device, etc., for monitoring time length, flow, frequency, etc. Through the above devices, whether the phase change device needs to perform secondary heat exchange can be monitored in the following ways: the continuous working time length of the water-cooled heat exchanger, the water outlet flow in a certain time, or the intermittent time length of the intermittent water outlet of the water outlet in a certain time, etc. Of course, whether the phase change device needs to perform secondary heat exchange can also be determined in combination with the temperature and the parameters monitored by the second monitoring device. That is, there are various ways to determine whether the phase change device needs to perform secondary heat exchange, which can be set according to actual needs. For example, the total sum of the number of times when the intermittent time length of the intermittent water outlet of the water outlet in a certain time is less than a threshold value is greater than a preset value in a certain time, or the total sum of the continuous number of times when the intermittent time length is less than a threshold value is greater than a preset value, which can be considered as needing the phase change device to perform secondary heat exchange.

[0025] Among them, the total heat exchange power of the liquid treatment device is P, the heat exchange power of the water-cooled heat exchanger is P1, the heat exchange power of the phase change device is P2, P1=(0.5-0.7)P, and / or P2=(0.1-0.4)P. That is, the proportion of the allocated power P1 of the water-cooled heat exchanger to the total power P is 0.5-0.7. The proportion of the allocated power P2 of the phase change device to the total power P is 0.1-0.4. Further, the power ratio of the phase change device is 0.2-0.31. Through the cooperation of the power ratio of the two, the high temperature difference of the water-cooled heat exchanger can be fully utilized, and the efficiency of the water-cooled heat exchange can be improved. At the same time, the high heat exchange efficiency of the phase change device can be fully utilized at low temperature difference. Through the optimal configuration of the power, higher cooling efficiency can be achieved. At the same time, this kind of power distribution, on the one hand, fully utilizes the heat exchange efficiency of the water-cooled heat exchanger and the phase change device, that is, fully utilizes the heat exchange efficiency of the two, on the other hand, and can make the water flow of the liquid treatment device maintain a high flow rate in a unit of time; thirdly, the volume of the water-cooled heat exchanger and the phase change device can be adapted. If the water-cooled heat exchanger is set to a higher power to achieve a higher heat exchange efficiency, a larger volume is needed, and a smaller power will bring a larger volume of the phase change device. If the phase change device is set to a higher power to achieve a higher heat exchange efficiency, a larger volume is needed, and a lower power of the phase change device requires a larger volume of the water-cooled heat exchanger. The above will inevitably increase the overall volume of the liquid treatment device, which is not conducive to the miniaturization of the device. The power of the two is adapted, which can adapt the volume of the two, that is, it can ensure the overall heat exchange efficiency of the liquid treatment device, realize accurate temperature control, reduce temperature fluctuation, and ensure that the volume of the liquid treatment device will not be too large, so as to facilitate the placement on the table, without occupying too much space, and improve the user experience.

[0026] Further, the temperature difference between the inlet temperature and the outlet temperature of the water-cooled heat exchanger is less than or equal to 55℃ and greater than or equal to 40℃. Further, the temperature difference between the inlet temperature and the outlet temperature of the phase change device is less than or equal to 20℃ and greater than or equal to 10℃. Such a setting can limit the power of each heat exchanger through the temperature control of the outlet and inlet of the two heat exchangers, so as to limit the heat exchange efficiency of the two heat exchangers, thereby realizing the power distribution between the water-cooled heat exchanger and the phase change device. In this way, the accuracy of the temperature regulation of the phase change device can be improved, and the size of the phase change device can be reduced, which is helpful for the miniaturization of the liquid processing device. In addition, such a setting is also helpful for the cooperative temperature control between the water-cooled heat exchanger and the phase change device, improves the accuracy of the outlet water temperature of the liquid processing device, and improves the cooperative matching of the heat exchange efficiency of the water-cooled heat exchanger and the phase change device, so that both the water-cooled heat exchanger and the phase change device can realize the maximum efficiency. By setting the temperature difference of the water-cooled heat exchanger to be between 40℃ and 55℃, the efficiency of the water-cooled heat exchanger can be ensured. By setting the temperature difference of the phase change device to be between 10℃ and 20℃, the temperature can be further corrected in a small range on the basis of ensuring that the efficiency of the water-cooled heat exchanger is fully realized, and at this time, the temperature difference range is small, which can reduce the fluctuation of the corrected temperature, and at the same time, the efficiency of the phase change device can also be fully realized.

[0027] Further, the outlet water temperature of the phase change device is greater than or equal to 30℃ and less than or equal to 50℃. Further, the outlet water temperature of the phase change device is greater than or equal to 40℃ and less than or equal to 50℃.

[0028] Further, the liquid processing device comprises a water outlet assembly, and the outlet water flow of the water outlet assembly is less than or equal to 7.5g / s. Such a setting can limit the heating demand and ensure the heating efficiency, so that the cooperation of the phase change device and the water-cooled heat exchanger can meet the heat exchange demand, so as to reduce the temperature fluctuation, thereby realizing the accurate control of the temperature.

[0029] Further, the phase change temperature of the phase change material in the phase change device has a preset temperature difference with the outlet water temperature of the second waterway. By the preset temperature difference, the water discharged from the second waterway can cause the phase change of the phase change material, so that the phase change material can change phase, thereby completing the control of the temperature of the water output by the second waterway.

[0030] Further, an absolute value of the preset temperature difference is less than or equal to 20℃, or the absolute value of the preset temperature difference is less than or equal to 10℃. This setting can improve the utilization rate of the phase change material, reduce the power consumption of the phase change device, improve the heating efficiency, improve the temperature stabilization effect of the phase change device, and reduce the volume of the phase change device, promoting the miniaturization of the overall structure. Of course, this setting can also avoid a too large temperature difference, which causes the phase change device to fail to meet the corresponding heat exchange demand, and can also avoid a too low temperature that cannot cause phase change, thereby causing the phase change device to not work. In this way, the heat exchange effect is ensured, the stability of the large flow and the outlet water temperature is ensured, and the user experience is improved.

[0031] In any of the above technical solutions, the temperature change value of the outlet water temperature of the second waterway in the preset time period is a, the temperature change value of the outlet water temperature of the phase change device in the preset time period is b, and a-b>1.5℃. Further, a-b>3℃, that is, when the outlet water temperatures of the heat exchanger and the phase change device both have deviations, the outlet water temperature deviation of the heat exchanger should be larger. That is, the temperature change value a of the outlet water temperature of the second waterway is larger than the temperature change value b of the outlet water temperature of the phase change device in the same time period, that is, the outlet water temperature of the second waterway fluctuates more, and the outlet water temperature of the first heat exchange period fluctuates less.

[0032] In this technical solution, a-b is greater than 1.5℃, and further, a-b>3℃. On the one hand, the power consumption of the phase change material is reduced, the power effect of the heating module can be guaranteed, and the heating efficiency is improved. On the other hand, the utilization rate of the phase change material is improved, the temperature stabilization effect of the phase change device is improved, and finally the volume of the phase change device is reduced, promoting the miniaturization of the overall structure.

[0033] Further, the total heat exchange amount of the phase change device is greater than or equal to 25KJ. This setting can ensure the heat exchange efficiency of the phase change device, reduce temperature fluctuations, and thus realize accurate control of the temperature. Also, the total heat exchange amount greater than or equal to 25KJ ensures that the phase change device has a stable temperature effect.

[0034] Further, the phase change device includes a phase change material, the phase change material includes paraffin, and the content of the phase change material is greater than or equal to 110g. This setting can ensure the heat exchange efficiency of the phase change device, reduce temperature fluctuations, and thus realize accurate control of the temperature. Also, the content of the phase change material greater than or equal to 110g ensures that the phase change device has a stable temperature effect.

[0035] In the present application, the optimal heat exchange interval of the water-cooled heat exchanger is to reduce 100℃ boiled water to the interval of 45℃-60℃. Below this temperature interval, the heat exchange efficiency is low, and above this temperature interval, the water convection heat exchange has a large cost advantage. The phase change device can have an advantage in heat exchange efficiency at the tail end of heat exchange.

[0036] Further, the absolute value of the difference between the outlet water temperature of the phase change device and the target temperature is less than a preset temperature value, and the preset temperature value is greater than or equal to 0 DEG C and less than or equal to 7 DEG C.

[0037] In the technical scheme, the absolute value of the difference between the outlet water temperature of the phase change device and the target temperature can be less than a preset temperature value, and the preset temperature value is greater than or equal to 0 DEG C and less than or equal to 7 DEG C, that is, the temperature difference between the temperature of the output water after temperature control by the phase change device and the ideal temperature is less than 7 DEG C, so as to improve the stability of the outlet water temperature. The temperature fluctuation of the output water of the phase change device is moderate, and the temperature fluctuation is too large, so as to control the temperature fluctuation, avoid the temperature fluctuation being too large, and reduce the requirement on the phase change device due to the high precision requirement, so as to reduce the cost of the phase change device. The outlet water temperature can be greater than the target temperature or less than the target temperature. The target temperature is an ideal temperature required by the phase change device, and the temperature is related to the target temperature of the water expected by the user. For example, generally, the liquid treatment device is provided with a target outlet water temperature, for example, the liquid treatment device can be provided with several temperature positions for the user to select, so as to determine the target temperature of the water flowing out of the outlet of the liquid treatment device, and after the user selects the corresponding temperature position, the target outlet water temperature is determined, and the target temperature of the phase change device is determined correspondingly after the target outlet water temperature is determined.

[0038] Generally, the maximum heating power of the existing small household appliance is 2300W, and 7.35g / s of pure water can be heated from room temperature 25 DEG C to boiling. In order to ensure that all the outlet water realizes boiling sterilization, the maximum flow of the liquid treatment device related to the present application is not more than 7.5g / s; the heat exchange power of the water-cooled heat exchanger in the room temperature fluctuation range is 1540W-1240W, and the actual outlet water temperature is between 50 DEG C-60 DEG C. The phase change device can reduce the temperature of 55 DEG C±5 DEG C to 40 DEG C±3 DEG C, and the heat exchange power of the phase change device is 210W-710W.

[0039] Among them, the temperature in the liquid supply tank is high, the efficiency of the heat exchange part of the water-cooled heat exchanger is low, the phase change device needs to provide higher cooling efficiency, and the consumption of the phase change material is also faster; limited by factors such as cost, if the heat exchange power is 700W, it meets the normal drinking water habit, and needs to continuously output water for not less than 35 seconds, the total heat exchange amount of the phase change material should be not less than 25kJ; generally, the phase change material of about 40 DEG C is usually phase change paraffin, and the heat storage density is about 200J / g-240J / g, so the total filling amount should be not less than 110g.

[0040] The outlet water temperature of the water-cooled cooling module is higher than the temperature of the phase change material, so as to ensure that the phase change material can be phase changed under the premise of as little consumption of the phase change material as possible, and realize longer cooling effect.

[0041] Further, the flow distribution control device comprises a flow distribution valve, which is a three-way valve.

[0042] In the technical scheme, the flow distribution control device comprises a flow distribution valve, which is a three-way valve, and the three-way valve is connected with the second water channel and the first and second flow distribution branches.

[0043] In the technical scheme, the outlet of the first water channel is connected with the inlet of the heater, and the liquid flowing through the first water channel is heated in the heater and then enters the second water channel.

[0044] In the technical scheme, the outlet of the first water channel is connected with the inlet of the heater, i.e. the water in the first water channel after heat exchange with the heated liquid is directly input into the heater and then output after being heated by the heater. Through the arrangement, the hot water in the first water channel can be reused, so that the waste of heat is avoided and the heating efficiency of the whole product is improved. Meanwhile, the first water channel can be directly connected with the liquid supply device such as a liquid supply pipe or a liquid supply tank, so that the liquid supply device, the first water channel and the heater form a series connection.

[0045] Further, the inlet of the heater is connected with only the first water channel, i.e. the water in the heater is all from the first water channel. In another scheme, the inlet of the heater is connected with both the first water channel and the liquid supply device, i.e. two branches can supply water to the heater at the same time.

[0046] In the technical scheme, the phase change device further comprises: a housing; a phase change channel arranged in the housing or around the housing and connected with the outlet of the second water channel; a phase change material arranged in the housing, the phase change channel being capable of exchanging heat with the liquid in the phase change channel during phase change; the phase change channel and the second water channel are in an integrated structure, or the phase change channel and the second water channel are detachably connected, the phase change channel and the housing are detachably connected, or the phase change channel and the housing are assembled into an integrated structure.

[0047] In the technical solution, the phase change device comprises a shell, a phase change material and a phase change channel. The phase change channel can be arranged in the shell in an integrated or detachable structure. The phase change channel can also be a pipe arranged outside the shell. Further, the phase change channel and the second waterway can be connected into a pipe, and the phase change material and the shell are assembled into an integrated whole. Of course, the phase change channel and the second waterway can also be detachably connected. That is, in the present application, the phase change channel can be assembled into an integrated whole with the phase change material and the shell, and the phase change channel can also exist independently of the integrated whole of the phase change material and the shell. When the phase change channel exists independently, it can be connected into an integrated or split structure with the second waterway. That is, the structure of the phase change device can be variously arranged according to actual needs. However, it is best that the shell, the phase change material and the phase change channel are assembled into an integrated whole and then detachably connected with the second waterway. Further, the liquid treatment device further comprises a liquid supply device for supplying water.

[0048] The phase change device comprises a phase change channel and a phase change material formed phase change heat storage assembly. The phase change channel has a row or pipe structure, which can effectively increase water flow formation and prolong heat exchange time, so as to realize rapid cooling of boiling water and reach a minimum temperature of 40℃.

[0049] Further, the liquid supply assembly comprises a liquid supply tank and a liquid supply channel, and the outlet of the liquid supply channel is connected with the inlet of the heater and the cooling pipe. The inlet of the liquid supply channel is connected with an external water source, or the liquid supply device further comprises a liquid supply tank, and the inlet of the liquid supply channel is connected with the liquid supply tank. The temperature detection device is arranged on the liquid supply tank or the liquid supply channel.

[0050] In the technical solution, the liquid supply assembly comprises a liquid supply tank and a liquid supply channel, and the outlet of the liquid supply channel is connected with the inlet of the heater. The outlet of the liquid supply channel can be directly connected with the inlet of the heater, or the liquid supply channel can supply water to the heater through the first waterway. The liquid supply channel can also be connected with the first waterway to supply water to the first waterway. The temperature detection device is arranged on the liquid supply tank or the liquid supply channel. This arrangement provides water supply for the product through the liquid supply channel.

[0051] The inlet of the liquid supply channel can be directly connected with a water pipe at home, so that a liquid supply tank is not needed and the product structure is simplified, but the product must be used close to the water pipe. Meanwhile, a liquid supply tank can be arranged in the liquid treatment device, so that stable water supply is realized through the liquid supply tank, and the installation position of the product is more flexible and convenient.

[0052] Further, the liquid treatment device further comprises a pump body arranged on the liquid supply channel.

[0053] In the technical scheme, the liquid treatment device comprises a pump body. The pump body is arranged on the liquid supply channel, and the pump body can control the start and stop of the liquid supply channel and the flow of the supplied liquid, thereby ensuring the cooling effect of the water-cooled heat exchanger and the water output.

[0054] In the technical scheme, the liquid treatment device further comprises a boiling water channel, and the boiling water channel and the phase change device are connected in parallel at the outlet of the heater.

[0055] In the technical scheme, the liquid treatment device further comprises a boiling water channel. The boiling water channel and the phase change device are connected in parallel at the outlet of the heater. The water heated by the heater can be output through the boiling water channel, so that the product can output warm water suitable for direct drinking by the user, and the boiling water directly heated by the heater can be obtained to facilitate the user to make tea or coffee.

[0056] In the technical scheme, the liquid treatment device further comprises a boiling water channel. The boiling water channel and the phase change device are connected in parallel at the outlet of the heater. The water heated by the heater can be output through the boiling water channel, so that the product can output warm water suitable for direct drinking by the user, and the boiling water directly heated by the heater can be obtained to facilitate the user to make tea or coffee.

[0057] In the technical scheme, the liquid treatment device further comprises a boiling water channel. The boiling water channel and the phase change device are connected in parallel at the outlet of the heater. The water heated by the heater can be output through the boiling water channel, so that the product can output warm water suitable for direct drinking by the user, and the boiling water directly heated by the heater can be obtained to facilitate the user to make tea or coffee.

[0058] Further, the control switch is arranged on any connection channel between the storage tank and the boiling water channel, the first shunt branch, and the phase change device. The control switch can control the on-off of the corresponding connection channel, so that in actual process, the connection between the storage tank and the boiling water channel, the first shunt branch, and the phase change device can be controlled by controlling the on-off of the control switch.

[0059] Further, the liquid processing device further comprises a water outlet assembly connected with the outlet of the liquid storage tank.

[0060] In the technical scheme, when the liquid storage tank is arranged, the water outlet assembly is connected with the liquid storage tank, and the water outlet assembly directly discharges the liquid in the liquid storage tank.

[0061] In the technical scheme, the water-cooled heat exchanger comprises a tube type heat exchange structure or a row type heat exchange structure. The specific structure of the water-cooled heat exchanger can be arranged as required, and the tube type heat exchange structure and the row type heat exchange structure are relatively common and easy to purchase, so that the cost can be reduced. In the technical scheme, the heater comprises an instant heater and a non-instant heater.

[0062] In the technical scheme, the heater can be an instant heater or a non-instant heater. The instant heater can quickly heat the liquid to boiling, so that the liquid can be drunk immediately after being heated. The non-instant heater needs to wait until the liquid is heated to boiling before flowing into the water-cooled heat exchanger. Although the non-instant heater cannot achieve the effect of instant heating, the temperature of the output liquid is still suitable for drinking. In the specific arrangement, the heater can be arranged as instant or non-instant as required. The instant heater can be a thick mode heating pipe or a PTC pipe.

[0063] Further, the first water path and the second water path are metal pipes.

[0064] In the technical scheme, the first water path and the second water path are metal pipes. Through the good heat conductivity of the metal, the heat exchange efficiency between the first water path and the second water path is ensured, and the liquid processing device can discharge the liquid at the preset temperature.

[0065] In another technical scheme, the first water path and the second water path each comprise a metal part and a non-metal part. The first water path and the second water path contact the heat exchange part through the metal part. The part of the first water path and the second water path not contacting the heat exchange part is the non-metal part.

[0066] In the technical scheme, the first water path comprises a metal part and a non-metal part, and the second water path comprises a metal part and a non-metal part. The metal part is used to contact the heat exchange part. Through the good heat conductivity of the metal part, the heat exchange efficiency between the first water path and the second water path is ensured. The part of the first water path and the second water path not contacting the water-cooled heat exchanger is arranged as the non-metal part, so that the temperature of the liquid can be prevented from being affected by the room temperature. The liquid processing device can discharge the liquid at the preset temperature. For example, plastic can be used as the non-metal part. The heat conductivity of plastic is poor, so that the temperature of the liquid can be effectively prevented from being affected by the room temperature. In addition, plastic has low cost and good toughness, which is beneficial to the installation and maintenance of the equipment.

[0067] In the technical solution, the liquid treatment device further comprises a heat dissipation device arranged corresponding to the phase change device, and used for dissipating heat of the phase change device.

[0068] In the technical solution, the liquid treatment device further comprises a heat dissipation device arranged corresponding to the phase change device, and used for dissipating heat of the phase change device.

[0069] Further, the heat dissipation device comprises one or more of an air-cooled heat dissipation device, a heat dissipation fin and a water-cooled heat dissipation device.

[0070] Because the air-cooled heat dissipation device, the heat dissipation fin and the water-cooled heat dissipation device are common, it is convenient to purchase and install, so that the product cost can be reduced.

[0071] In the technical solution, the liquid treatment device comprises at least one of an instant heating container, a water dispenser and a beverage machine.

[0072] The technical solution of the second aspect of the application provides a control method of a liquid treatment device, which is used for the liquid treatment device provided in any one of the technical solutions of the first aspect. The control method comprises: acquiring a temperature detected by a first temperature detection device; and when the temperature detected by the first temperature detection device is greater than or equal to a first threshold value, controlling the inlet of the flow control device to be in communication with the second flow branch, so as to perform cooling through the phase change device.

[0073] According to the control method of the liquid treatment device provided in the root application, the on-off between the inlet of the flow control device and the first flow branch and the second flow branch can be controlled based on the liquid supply temperature. That is, whether the liquid after heat exchange of the water-cooled heat exchanger needs to be subjected to secondary heat exchange through the phase change device can be determined through the liquid supply temperature. Generally, when the liquid supply temperature is greater than the first threshold value, it is indicated that the liquid supply temperature is high, and therefore, the heat exchange demand is large, so that the liquid needs to be subjected to secondary heat exchange through the phase change device, so as to compensate for the low heat exchange efficiency of the water-cooled heat exchanger due to the excessively high liquid supply temperature, thereby improving the overall heat exchange efficiency of the liquid device, achieving small fluctuation, and improving the accuracy of temperature control. On the contrary, it is indicated that the heat exchange demand is not large, and at this time, the water flow direction needs to be further judged according to subsequent conditions.

[0074] Further, the first threshold value is 30℃ and less than or equal to 37℃.

[0075] In this technical solution, the first threshold should be less than 37℃ and greater than or equal to 30℃. Since the water-cooled heat exchanger uses the liquid flowing from the supply component to exchange heat with the liquid flowing from the heater, and the temperature of the water flowing from the heater is always boiling water at 100℃, the temperature detected by the temperature detection device directly affects the heat exchange effect of the water-cooled heat exchanger. If the first threshold is set to 35℃, and the temperature detected by the temperature detection device is higher than the first threshold of 35℃, it indicates that the temperature of the liquid flowing out of the second water path after heat exchange is too high and not suitable for direct drinking. Therefore, the liquid in the second water path needs to flow into the second branch, and then into the phase change device for secondary cooling, so that the liquid reaches a suitable temperature before being discharged.

[0076] In the above technical solution, the control method further includes: when the temperature detected by the first temperature detection device is less than a first threshold, obtaining the inlet temperature of the heater; when the inlet temperature of the heater is greater than or equal to a second threshold, controlling the inlet of the shunt control device to connect with the second shunt branch to cool down through the phase change device; or calculating the number N1 of times the inlet temperature of the heater is greater than or equal to the second threshold within a first preset time period; when the number N1 is greater than the first preset number, controlling the inlet of the shunt control device to connect with the second shunt branch to cool down through the phase change device; or calculating the number N2 of consecutive times the inlet temperature of the heater is greater than or equal to the second threshold within a second preset time period; when the number N2 is greater than the second preset number, controlling the inlet of the shunt control device to connect with the second shunt branch to cool down through the phase change device.

[0077] In this technical solution, when the heater inlet temperature exceeds the second threshold, it indicates that the heater inlet temperature is too high. This generally suggests poor heat exchange efficiency, resulting in a higher predicted temperature or larger temperature fluctuations for the water exiting the second water path. Therefore, in this case, the inlet of the diversion control device can be connected to the second diversion branch, allowing liquid in the second water path to flow into the second diversion branch and then into the phase change device for secondary cooling, ensuring the liquid reaches a suitable temperature before being discharged. Furthermore, to avoid misjudgment, when the supply temperature is low, the number of times N1 the inlet temperature is greater than or equal to the second threshold within the first preset time period can be calculated, or the number of consecutive times N2 the inlet temperature is greater than or equal to the second threshold within the second preset time period can be calculated. If the number of times N1 or the number of consecutive times N2 is greater than the specified threshold, it indicates that the heater inlet temperature is indeed too high, rather than an occasional phenomenon, thus requiring secondary heat exchange via the phase change device. If the number of times N1 or the number of consecutive times N2 is less than the specified threshold, it indicates that the heater inlet temperature is not consistently too high, but rather an occasional phenomenon, thus eliminating the need for secondary heat exchange via the phase change device. This setup uses the heater's inlet temperature and the frequency of high inlet temperature occurrences to make a dual judgment on the heat exchange efficiency of the water-cooled heat exchanger, ensuring precise temperature control.

[0078] In the technical solution, the control method further comprises: when the temperature detected by the first temperature detection device is less than the first threshold value, acquiring the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device; and when the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to a third threshold value, controlling the inlet of the shunt control device to be in communication with the second shunt branch to perform temperature reduction by the phase change device; or calculating the number N3 of times that the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to the third threshold value within a third preset time period, and when the number N3 is greater than a third preset number, controlling the inlet of the shunt control device to be in communication with the second shunt branch to perform temperature reduction by the phase change device; or calculating the continuous number N4 of times that the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to the third threshold value within a fourth preset time period, and when the number N4 is greater than a fourth preset number, controlling the inlet of the shunt control device to be in communication with the second shunt branch to perform temperature reduction by the phase change device.

[0079] In the technical solution, when the supply liquid temperature is low, the temperature of the liquid output after heat exchange by the heat exchanger can be further determined, and if the temperature of the liquid output after heat exchange by the heat exchanger is high, it indicates that the heat exchange efficiency of the water-cooled heat exchanger is reduced, and therefore the phase change device needs to further reduce the temperature. Of course, the number of times or the continuous number of times that the temperature of the liquid output after heat exchange by the heat exchanger is high within a certain time period can also be counted to determine whether the heat exchange efficiency of the water-cooled heat exchanger is reduced, and if the number of times or the continuous number of times that the temperature of the liquid output after heat exchange by the heat exchanger is high is large, it indicates that the heat exchange efficiency of the water-cooled heat exchanger is reduced, and therefore the phase change device needs to further reduce the temperature.

[0080] In the technical solution, the control method further comprises: when the temperature detected by the first temperature detection device is less than the first threshold value, acquiring the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device; and when the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to a third threshold value, controlling the inlet of the shunt control device to be in communication with the second shunt branch to perform temperature reduction by the phase change device; or calculating the number N3 of times that the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to the third threshold value within a third preset time period, and when the number N3 is greater than a third preset number, controlling the inlet of the shunt control device to be in communication with the second shunt branch to perform temperature reduction by the phase change device; or calculating the continuous number N4 of times that the liquid temperature at the outlet of the second waterway and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to the third threshold value within a fourth preset time period, and when the number N4 is greater than a fourth preset number, controlling the inlet of the shunt control device to be in communication with the second shunt branch to perform temperature reduction by the phase change device.

[0081] In the technical solution, when the liquid supply temperature is low, the continuous working time T1 of the water-cooled heat exchanger can be further obtained; if the working time of the water-cooled heat exchanger is relatively long, the heat exchange efficiency of the water-cooled heat exchanger will be reduced, so it can be predicted that the heat exchange efficiency of the water-cooled heat exchanger has indeed decreased due to long-time working, and at this time, the secondary heat exchange can be started. On the contrary, if the working time of the water-cooled heat exchanger is relatively short, it is generally believed that the working efficiency of the water-cooled heat exchanger will not be too low, so it is believed that the temperature is too high and is an occasional phenomenon, and the phase change device is not used to carry out secondary heat exchange. Through the inlet temperature of the heater and the working time of the water-cooled heat exchanger, the heat exchange efficiency of the water-cooled heat exchanger is judged twice, and the control accuracy of the temperature is ensured.

[0082] In the above technical solution, the control method further comprises: when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, obtaining the continuous working time T2 of the phase change device, and when T2 is greater than or equal to the sixth preset time length, cooling the phase change device.

[0083] In the technical solution, when the liquid supply temperature is too high, the continuous working time T2 of the phase change device can be further judged; if the working time of the phase change device is too long, it is not conducive to the reuse of the phase change material, and therefore the cooling device can be started to assist in cooling and improve the reuse of the phase change material.

[0084] In the above technical solution, the control method further comprises: when the temperature detected by the first temperature detection device is less than the first threshold value, obtaining the continuous working time T3 of the phase change device, and when T3 is greater than or equal to the seventh preset time length, cooling the phase change device, or controlling the inlet of the shunt control device to communicate with the first shunt branch.

[0085] In the technical solution, when the working time of the phase change device is too long and is not conducive to the reuse of the phase change material, the cooling device can be started to assist in cooling and improve the reuse of the phase change material.

[0086] In the above technical solution, the control method further comprises: when the temperature detected by the first temperature detection device is less than the first threshold value, obtaining the water outlet amount A1 of the liquid treatment device within the eighth preset time length; when the water outlet amount A1 is greater than or equal to the first preset water amount, controlling the inlet of the shunt control device to communicate with the second shunt branch to cool the phase change device; and when the water outlet amount A1 is less than the preset water amount, controlling the inlet of the shunt control device to communicate with the first shunt branch.

[0087] In the technical solution, it is monitored that the water outlet amount of the liquid device is relatively large within a certain time length, that is, the machine is in a continuous use state, it is predicted that the heat exchange efficiency of the water-cooled heat exchanger decreases, in order to ensure the accuracy and precision of the water outlet temperature of the liquid device, the liquid is distributed to the phase change device, so as to realize the maximization of the efficiency utilization and ensure the stability and precision of the water outlet temperature of the liquid device.

[0088] In the technical solution, the control method further comprises: when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, obtaining a water output A2 of the liquid treatment device within a ninth preset time length, and when the water output A2 is greater than or equal to a second preset water amount, performing heat dissipation on the phase change device.

[0089] In the technical solution, when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, heat exchange is performed by the phase change device, and if it is found that the water output is large at this time, the multiplicity of the phase change device is low, so the heat dissipation device can be enabled to assist in heat dissipation, thereby improving the multiplicity of the phase change device.

[0090] In the technical solution, the control method further comprises: when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, calculating a first intermittent time length T4 of water output of the liquid treatment device within a tenth preset time length, and when T4 is less than or equal to a first target time length, performing heat dissipation on the phase change device.

[0091] In the technical solution, the first intermittent time length of water output within a fifth preset time length is obtained, and the number N3 of times that the first intermittent time length is less than a first target time length is calculated, and if N3 is greater than a third preset number of times, it indicates that the number of times that the intermittent time length is relatively long is relatively large, which indicates that the water output is slow, thereby indirectly reflecting that the heat exchange efficiency is low, so the phase change device can be introduced for secondary heat exchange. Otherwise, it indicates that the heat exchange efficiency is high, so the phase change device can not be introduced for secondary heat exchange. This kind of setting makes a double judgment on the temperature and the intermittent time length of water output, further ensures the demand for heat exchange efficiency, and makes the temperature control more accurate.

[0092] In the technical solution, when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, heat exchange is performed by the phase change device, and if it is found that the intermittent time of water output is relatively small at this time, the phase change device is always working, in order to avoid that the multiplicity of the phase change device is low, so the heat dissipation device can be enabled to assist in heat dissipation, thereby improving the multiplicity of the phase change device, which avoids the phenomenon that the efficiency of the phase change material is reduced due to that the phase change device works for too long.

[0093] In the technical solution, the control method further comprises: when the temperature detected by the first temperature detection device is less than the first threshold value, calculating a second intermittent time length T5 of water output of the liquid treatment device within an eleventh preset time length, when T5 is greater than or equal to a second target time length, controlling the inlet of the flow distribution control device to communicate with the second flow distribution branch to perform cooling by the phase change device, and when T5 is less than the second target time length, performing heat dissipation on the phase change device.

[0094] In the technical solution, the temperature detected by the first temperature detection device is less than or equal to the first threshold value, if at this time, the number of times that the discontinuous length of the water outflow is less than the target length is too much, at this time, it is predicted that the time for reuse of the phase change material in the phase change device is less, at this time, the use of the phase change device is reduced, and the power can be distributed to the water-cooled heat exchanger, on the one hand, the cooling effect is ensured, and on the other hand, the reuse of the phase change material is facilitated.

[0095] In the above technical solution, the control method further comprises: when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, calculating the number N5 of times that the third discontinuous length T6 of the water outflow within the twelfth preset length is less than or equal to the third target length, and when N5 is greater than the third threshold value, controlling the inlet of the flow distribution control device to communicate with the first flow distribution branch, or controlling the heat dissipation device to dissipate heat to the phase change device.

[0096] In the technical solution, the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, at this time, heat exchange is performed through the phase change device, if at this time, the number of times that the discontinuous length of the water outflow is less than the target length is too much, at this time, it is predicted that the time for reuse of the phase change material in the phase change device is less, at this time, the use of the phase change device is reduced, and the power can be distributed to the water-cooled heat exchanger, on the one hand, the cooling effect is ensured, and on the other hand, the reuse of the phase change material is facilitated.

[0097] In the above technical solution, the control method further comprises: when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, calculating the total sum N6 of continuous times that the fourth discontinuous length T7 of the water outflow within the thirteenth preset length is less than or equal to the fourth target length by the liquid treatment device, and when N6 is greater than the fourth threshold value, controlling the inlet of the flow distribution control device to communicate with the first flow distribution branch, or controlling the heat dissipation device to dissipate heat to the phase change device.

[0098] In the technical solution, the discontinuous length of the water outflow is determined, and the efficiency utilization of the phase change device is predicted, when the discontinuous length is long, at this time, the efficiency of the phase change device can be utilized to the maximum extent, the use efficiency of the phase change device is improved, and the cooling effect is improved, when the discontinuous length is short, at this time, it is predicted that the reusability of the phase change material in the phase change device is poor, the heat dissipation device is started to dissipate heat to the phase change device, and the use efficiency of the phase change device is improved.

[0099] Additional aspects and advantages of the application will become apparent from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0100] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood by considering the following detailed description, including the accompanying drawings, in which:

[0101] Figure 1is a structural schematic view of a liquid treatment device provided by an embodiment of the present application;

[0102] Figure 2 is a structural schematic view of a liquid treatment device provided by another embodiment of the present application;

[0103] Figure 3 is a structural schematic view of a water-cooled heat exchanger of a liquid treatment device provided by an embodiment of the present application;

[0104] Figure 4 is a structural schematic view of a liquid supply assembly of a liquid treatment device provided by an embodiment of the present application;

[0105] Figure 5 is a flow schematic view of a control method of a liquid treatment device provided by an embodiment of the present application.

[0106] wherein, Figures 1 to 4 the correspondence between the reference signs and the component names in

[0107] 1 heater, 2 water-cooled heat exchanger, 22 first water path, 24 second water path, 26 heat exchange part, 3 phase change device, 4 liquid supply assembly, 42 liquid supply tank, 44 liquid supply channel, 46 pump body, 5 first temperature detection device, 6 water outlet assembly, 7 boiling water channel, 8 flow splitting control device, 82 first flow splitting branch, 84 second flow splitting branch, 9 liquid storage tank. DETAILED DESCRIPTION

[0108] In order to enable a more clear understanding of the above-mentioned objects, features and advantages of the present application, the present application will be further described below in conjunction with the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0109] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0110] The liquid treatment device provided by the present application will be described below with reference to Figures 1 to 4 .

[0111] Embodiment One

[0112] As shown in Figures 1 to 4 , the embodiment of the first aspect of the present application provides a liquid treatment device, which comprises a liquid supply assembly 4, a heater 1, a water-cooled heat exchanger 2, a flow splitting control device 8, a parameter monitoring device and a phase change device 3. The structure of the liquid supply assembly 4 is as shown in Figure 4The heater 1 is capable of heating the liquid flowing therethrough. The water-cooled heat exchanger 2 comprises a first water path 22, a second water path 24 and a heat exchange portion 26, the heat exchange portion 26 being arranged between the first water path 22 and the second water path 24, the first water path 22 and the second water path 24 exchanging heat through the heat exchange portion 26, and the second water path 24 being connected to the outlet of the heater 1. The parameter monitoring device is used for monitoring the parameters of the liquid treatment device, and comprises a first temperature detecting device 5 (as shown in Figure 1 and Figure 4 The first temperature detecting device 5 is arranged corresponding to the outlet of the liquid supply assembly 4 and / or the inlet of the first water path 22, and is used for detecting the temperature of the liquid in the liquid supply assembly 4 and / or the temperature of the liquid at the inlet of the first water path 22. The flow splitting control device 8 comprises a flow splitting control device inlet, a first flow splitting branch 82 and a second flow splitting branch 84 capable of being connected and disconnected with the flow splitting control device inlet, the flow splitting control device inlet being connected with the outlet of the second water path 24, and the flow splitting control device 8 being connected with the parameter monitoring device, and being used for controlling the connection and disconnection between the flow splitting control device inlet and the first flow splitting branch 82 and the second flow splitting branch 84 according to the parameters of the parameter monitoring device. The phase change device 3 is connected with the second flow splitting branch 84, and is capable of performing heat exchange treatment on the liquid flowing out of the second flow splitting branch 84.

[0113] The liquid treatment device provided by the technical scheme of the application comprises a liquid supply assembly 4, a heater 1, a water-cooled heat exchanger 2, a flow distribution control device 8, a parameter monitoring device and a phase change device 3. The liquid supply assembly 4 serves as a liquid supply source to supply the required liquid such as water to the heater 1 or the water-cooled heat exchanger 2. The water-cooled heat exchanger 2 comprises a first water channel 22, a second water channel 24 and a heat exchange part 26, and the second water channel 24 is connected to the outlet of the heater 1. The phase change device 3 is connected to the outlet of the second water channel 24, and the phase change device 3 comprises a phase change material. When the liquid in the second water channel 24 passes through the phase change device 3, the phase change material exchanges heat with the liquid in the second water channel 24, thereby cooling or chilling the liquid in the second water channel 24. The parameter monitoring device comprises a first temperature detection device 5, which detects the temperature of the liquid supply or the inlet of the first water channel 22, and selects the flow distribution according to the temperature value. If the temperature of the liquid supply is too high, the liquid must pass through the phase change device 3, so as to compensate for the low heat exchange efficiency of the water-cooled heat exchanger 2 due to the high temperature of the liquid supply, thereby improving the overall heat exchange efficiency of the liquid device, achieving small fluctuation and improving the accuracy of temperature control. Of course, the parameter monitoring device can also be used to monitor other parameters such as temperature, water flow and time length, so as to determine whether the liquid in the second water channel 24 needs to be cooled again according to the monitored other parameters and the temperature of the liquid supply. That is, when determining the flow direction of the liquid after the heat exchange of the water-cooled heat exchanger 2 and after the flow distribution control device 8, the application gives priority to the influence of the temperature of the liquid supply. Instead of only considering the temperature of the outlet of the heater 1. Because the water-cooled heat exchanger 2 is greatly affected by the temperature of the liquid flowing into the outlet of the liquid supply assembly 4 or the inlet of the first water channel 22, that is, the temperature of the liquid in the outlet of the liquid supply assembly 4 or the inlet of the first water channel 22 will directly affect the heat exchange effect of the water-cooled heat exchanger 2, or will directly determine the temperature of the liquid flowing out of the second water channel 24 after heat exchange. Therefore, when determining whether to use the phase change device 3 for heat exchange, the application gives priority to the temperature of the outlet of the liquid supply assembly 4 and / or the inlet of the first water channel 22, so as to make the temperature control more accurate.

[0114] When the temperature of the liquid supply is greater than or equal to the first threshold value, the inlet of the flow distribution control device 8 is communicated with the second flow distribution branch 84 to cool the liquid by the phase change device 3. Further, the first threshold value is 30℃ and less than or equal to 37℃.

[0115] In the technical solution, the first threshold value is less than 37 DEG C and greater than or equal to 30 DEG C. Since the water-cooled heat exchanger 2 uses the liquid flowing out of the liquid supply assembly 4 to exchange heat with the liquid flowing out of the heater 1, and the temperature of the liquid flowing out of the heater 1 is certainly 100 DEG C boiling water, the temperature detected by the temperature detection device will directly affect the heat exchange effect of the water-cooled heat exchanger 2. If the first threshold value is set to 35 DEG C, when the temperature detected by the temperature detection device is higher than the first threshold value 35 DEG C, it is predicted that the temperature of the liquid flowing out of the second waterway 24 after heat exchange is relatively high, and cannot meet the direct drinking, therefore, it is necessary to make the liquid in the second waterway 24 flow into the second shunt branch 84, and then flow into the phase change device 3, to perform secondary cooling on the liquid, so that the liquid is discharged after reaching the appropriate temperature.

[0116] In addition, the liquid treatment device provided by the application can form a double heat exchange device through the water-cooled heat exchanger 2 and the phase change device 3, so that the boiling liquid can be rapidly cooled to the required temperature. Compared with the cooling mode of only arranging the water-cooled heat exchanger 2, the water-cooled heat exchanger 2 needs a longer heat exchange pipeline to directly reduce to 45 DEG C. In the application, the heat exchange requirement of the water-cooled heat exchanger 2 is reduced by arranging the water-cooled heat exchanger 2 and the phase change device 3, so that the pipeline of the water-cooled heat exchanger 2 can be shortened, the water-cooled heat exchanger 2 with lower efficiency can be selected, the volume of the water-cooled heat exchanger 2 can be reduced, the cost of the water-cooled heat exchanger 2 can be reduced, and the overall volume of the product can be smaller and the cost can be lower. At the same time, the temperature of the outlet water is kept near the phase change temperature by using the phase change material for temperature control, so that the outlet water temperature is controllable. When the water-cooled heat exchanger 2 is used alone, the influence of the ambient temperature on the liquid temperature is large, the heat exchange temperature of the water-cooled heat exchanger 2 has a certain deviation, and therefore the outlet water temperature of the single water-cooled heat exchanger 2 is not very stable. At the same time, the single water-cooled heat exchange module is limited by the structure size and efficiency, and cannot reduce the boiling water to below 50 DEG C. The additional phase change device 3 can further reduce the outlet water temperature to below 50 DEG C, so that the outlet water temperature of the device is more suitable for human drinking. In addition, the temperature difference between the boiling water and the normal temperature water is large before water convection heat exchange, and the water-cooled heat exchange efficiency is high. The phase change device 3 uses the constant phase change temperature of the phase change material, and the efficiency of low-temperature difference heat exchange is higher than that of the water-cooled heat exchanger 2. Therefore, the combination of the water-cooled heat exchanger 2 in front and the phase change device 3 at the back can further improve the cooling efficiency. Further, the parameter detection device and the flow control device 8 can determine the heat exchange efficiency of the water-cooled heat exchanger 2 based on the temperature in front of the water-cooled heat exchanger 2. Therefore, whether the hot water after water-cooled heat exchange needs to be further cooled by the phase change device 3 can be determined based on the heat exchange efficiency of the water-cooled heat exchanger 2, so that the influence of the supply liquid temperature can be reduced, the outlet liquid temperature is more controllable and stable, the boiling water or beverage is not excessively cooled due to the excessively low supply liquid temperature, and the cooling is insufficient due to the excessively high supply liquid temperature, so that the water-cooled heat exchanger 2 cannot output the required temperature.

[0117] The device can be applied in a non-continuous drinking water system, and boiling water can be rapidly cooled by using the phase change material heat storage and environmental heat dissipation. The device has the characteristics of no additional energy consumption in the cooling process, simple structure, high efficiency, and reusability, and has very good market application prospect and value.

[0118] The phase change cooling module has the characteristics of quickly absorbing a large amount of heat energy at a constant temperature, and can quickly store the heat of high-temperature hot water in the phase change material assembly, and the temperature of the phase change material is not higher than the phase change temperature point, thereby ensuring the continuous progress of the heat exchange process until the temperature of the hot water and the temperature of the phase change material are balanced. The phase change material is a solid-liquid phase change material, and the phase change temperature is between 40-45 DEG C, such as paraffin composite phase change material, salt material, etc.

[0119] In the above technical solution, the parameter monitoring device comprises a second temperature detection device (not shown in the figure) for detecting the liquid temperature at the outlet of the second waterway, and / or the liquid temperature at the inlet of the shunt control device, and / or the inlet temperature of the heater.

[0120] In the technical solution, the parameter monitoring device comprises a second temperature detection device, which can be arranged at a corresponding position according to the temperature to be monitored. For example, it can be arranged at the inlet of the shunt control device 8 and / or the outlet of the second waterway 24 to detect the temperature after heat exchange of the water-cooled heat exchanger 2. For example, it can be arranged at the inlet of the heater 1 to detect the inlet temperature of the heater 1, so as to judge the fluctuation of the inlet temperature or the efficiency of the water-cooled heat exchanger 2. By detecting the inlet temperature of the heater 1, the outlet temperature of the water-cooled heat exchanger 2 or the fluctuation of the outlet temperature can be predicted. If the inlet temperature of the heater 1 is high, it is predicted that the cooling efficiency of the water-cooled heat exchanger 2 is low at this time, and the shunt to the phase change device 3 helps to ensure the stability and accuracy of the outlet temperature of the liquid treatment device, and realizes the full use of the efficiency of the water-cooled heat exchanger 2 and the phase change device 3. Specifically, when the second temperature detection device detects a low temperature, the water-cooled heat exchanger 2 can be used to cool the boiling water to a suitable drinking temperature, and the hot water after heat exchange is directly output through the first shunt branch 82 to avoid excessive cooling. When the second temperature detection device detects a high temperature, the water-cooled heat exchanger 2 cannot be used to cool the boiling water to a suitable drinking temperature. Therefore, the shunt control device 8 can be controlled to connect the phase change device 3 to the waterway, so that the liquid after heat exchange in the water-cooled heat exchanger 2 flows from the second waterway 24 into the second shunt branch 84 and enters the phase change device 3, which plays a role of secondary cooling of the liquid in the second shunt branch 84.

[0121] In the above technical solution, the second temperature detection device is used to detect the liquid temperature at the outlet of the second waterway 24 and / or the liquid temperature at the inlet of the shunt control device 8; the shunt control device 8 is connected to the second temperature detection device, and when the temperature detected by the second temperature detection device is greater than or equal to a second threshold value, such as a second temperature value or a second preset temperature range, the shunt control device 8 is controlled to be in communication with the second shunt branch 84 at the inlet of the shunt control device 8, and when the temperature detected by the second temperature detection device is less than the second temperature value or less than the second preset temperature range, the shunt control device 8 is controlled to be disconnected from the second shunt branch 84 at the inlet of the shunt control device 8.

[0122] In this technical solution, the shunt control device 8 is connected to the second temperature detection device to control the conduction of the loop inside the shunt control device 8 according to the temperature. The second temperature detection device is arranged at the outlet of the second waterway 24 and / or the inlet of the shunt control device 8, which is used to monitor the cooling effect of the heat exchanger. If the liquid temperature at the outlet of the second waterway 24 and / or the liquid temperature at the inlet of the shunt control device 8 is too high, it indicates that the heat exchange effect of the heat exchanger is poor, so the temperature of the water from the second waterway 24 will be relatively high or the temperature fluctuation will be relatively large. Therefore, at this time, the controller controls the shunt control device 8 to be in communication with the second shunt branch 84 at the inlet of the shunt control device 8, so that the liquid in the second waterway 24 flows into the second shunt branch 84 and then flows into the phase change device 3 to perform secondary cooling on the liquid, so that the liquid is discharged after reaching the appropriate temperature. Conversely, if the liquid temperature at the outlet of the second waterway 24 and / or the liquid temperature at the inlet of the shunt control device 8 is not too high, it indicates that the heat exchange effect of the heat exchanger is good, so the temperature of the water from the second waterway 24 will be relatively low or the temperature fluctuation will be relatively small. Therefore, at this time, the controller controls the shunt control device 8 to be in communication with the first shunt branch 82 at the inlet of the shunt control device 8, so that the liquid in the second waterway 24 is directly discharged without passing through the phase change device 3.

[0123] Further, the second temperature value is greater than or equal to 50℃ and less than or equal to 60℃.

[0124] In the technical solution, the second preset temperature range is less than 60 DEG C and greater than or equal to 50 DEG C. Since the water-cooled heat exchanger 2 uses the liquid flowing out of the liquid supply assembly 4 to exchange heat with the liquid flowing out of the heater 1, and the temperature of the liquid flowing out of the heater 1 is definitely 100 DEG C boiling water, the temperature detected by the second temperature detection device will directly affect the heat exchange effect of the water-cooled heat exchanger 2. If the first preset threshold is set to 50 DEG C, when the liquid temperature detected by the second temperature detection device is higher than the first preset threshold 50 DEG C, it means that the temperature of the liquid flowing out of the second waterway 24 after heat exchange is relatively high, and cannot meet the direct drinking requirement, therefore, it is necessary to make the liquid in the second waterway 24 flow into the second shunt branch 84, and then flow into the phase change device 3, to perform secondary cooling on the liquid, so that the liquid reaches the suitable temperature and is discharged. When the liquid temperature detected by the second temperature detection device is lower than the first preset threshold 50 DEG C, the water-cooled heat exchanger 2 can heat exchange the liquid flowing out of the second waterway 24 to the suitable temperature, so that the user can directly drink.

[0125] In the above technical solution, the second temperature detection device is used to detect the temperature of the outlet of the second waterway 24 or the liquid temperature W2 of the inlet of the shunt control device. When W2 is greater than or equal to a preset temperature threshold, the inlet of the shunt control device is communicated with the second shunt branch. The outlet water setting temperature of the liquid treatment device is W0. When |W2-W0| is greater than or equal to a third temperature value or a third preset temperature range, the inlet of the shunt control device 8 is communicated with the second shunt branch 84. When |W2-W0| is less than the third temperature value or the third preset temperature range, the inlet of the shunt control device 8 is disconnected with the second shunt branch 84. Or the shunt control device 8 is used to control the inlet of the shunt control device 8 to be communicated with the second shunt branch 84 when the second temperature detection device detects that the temperature W2 is greater than or equal to a fourth temperature value or a fourth preset temperature range, and to be disconnected with the second shunt branch 84 when the second temperature detection device detects that the temperature W2 is less than the fourth temperature value or the fourth preset temperature range.

[0126] In the technical solution, whether the heat exchange is performed through the phase change device 3 can be determined based on the temperature W2 of the liquid at the inlet of the flow distribution control device and the temperature at the outlet of the second water channel 24. That is, the second temperature detection device is used to determine whether the temperature at the outlet of the second water channel 24 or the inlet of the flow distribution control device is too high. If the temperature is too high, the liquid needs to pass through the phase change device 3. If the temperature is too low, the liquid does not need to pass through the phase change device 3. For example, the outlet water temperature of the liquid treatment device is set to W0. When |W2-W0| is greater than or equal to a third temperature value or a third preset temperature range, it indicates that the set temperature and the temperature after the first heat exchange are greatly different, and therefore the liquid needs to pass through the phase change device 3. Otherwise, the liquid does not need to pass through the phase change device 3, but is directly discharged. Of course, a fourth temperature value or a fourth preset temperature range can also be set to determine whether the temperature W2 at the outlet of the second water channel 24 or the inlet of the flow distribution control device is too high, so as to determine whether the liquid needs to pass through the phase change device 3. Further, the third temperature value is 4℃, 5℃ or 7℃. Because the threshold value of |W2-W0| is less than 7℃, the outlet water temperature is within the preset outlet water temperature fluctuation range, the phase change module is not needed for secondary cooling, the reuse of the phase change material is promoted, the utilization efficiency of the phase change material is improved, and the technical effects of cooling and stabilizing the temperature of the phase change device 3 are ensured. In another scheme, when the temperature of the liquid in the second water channel 24 and / or the temperature of the liquid at the inlet of the flow distribution control device 8 is greater than or equal to a fifth threshold value, such as a fifth temperature value or a fifth preset temperature range, it indicates that the temperature of the liquid flowing out of the second water channel 24 after the first heat exchange is too high and cannot be directly drunk. Therefore, the liquid in the second water channel 24 needs to flow into the second flow distribution branch 84 and then flow into the phase change device 3 to be cooled for the second time.

[0127] In the technical solution, whether the heat exchange is performed through the phase change device 3 can be determined based on the temperature W2 of the liquid at the inlet of the flow distribution control device and the temperature at the outlet of the second water channel 24. That is, the second temperature detection device is used to determine whether the temperature at the outlet of the second water channel 24 or the inlet of the flow distribution control device is too high. If the temperature is too high, the liquid needs to pass through the phase change device 3. If the temperature is too low, the liquid does not need to pass through the phase change device 3. For example, the outlet water temperature of the liquid treatment device is set to W0. When |W2-W0| is greater than or equal to a third temperature value or a third preset temperature range, it indicates that the set temperature and the temperature after the first heat exchange are greatly different, and therefore the liquid needs to pass through the phase change device 3. Otherwise, the liquid does not need to pass through the phase change device 3, but is directly discharged. Of course, a fourth temperature value or a fourth preset temperature range can also be set to determine whether the temperature W2 at the outlet of the second water channel 24 or the inlet of the flow distribution control device is too high, so as to determine whether the liquid needs to pass through the phase change device 3. Further, the third temperature value is 4℃, 5℃ or 7℃. Because the threshold value of |W2-W0| is less than 7℃, the outlet water temperature is within the preset outlet water temperature fluctuation range, the phase change module is not needed for secondary cooling, the reuse of the phase change material is promoted, the utilization efficiency of the phase change material is improved, and the technical effects of cooling and stabilizing the temperature of the phase change device 3 are ensured. In another scheme, when the temperature of the liquid in the second water channel 24 and / or the temperature of the liquid at the inlet of the flow distribution control device 8 is greater than or equal to a fifth threshold value, such as a fifth temperature value or a fifth preset temperature range, it indicates that the temperature of the liquid flowing out of the second water channel 24 after the first heat exchange is too high and cannot be directly drunk. Therefore, the liquid in the second water channel 24 needs to flow into the second flow distribution branch 84 and then flow into the phase change device 3 to be cooled for the second time.

[0128] In the technical solution, the parameter monitoring device further comprises: a time length detection device, configured to detect the continuous working time length of the water-cooled heat exchanger 2 and / or the continuous working time length of the phase change device 3, and / or to detect the intermittent time length T3 of the liquid treatment device within a first preset time length; a counting device, configured to count the number N1 of times that the inlet temperature of the heater 1 is greater than or equal to the second threshold value within the first preset time length, to count the continuous number N2 of times that the inlet temperature of the heater 1 is greater than or equal to the second threshold value within a second preset time length, to count the number N3 of times that the liquid temperature at the outlet of the second water path 24 and / or the liquid temperature at the inlet of the shunt control device 8 is greater than or equal to the third threshold value within a third preset time length, to count the continuous number N4 of times that the liquid temperature at the outlet of the second water path 24 and / or the liquid temperature at the inlet of the shunt control device 8 is greater than or equal to the third threshold value within a fourth preset time length, and / or to count the intermittent time length of the liquid treatment device within a tenth preset time length and / or an eleventh preset time length, and / or to count the number N5 of times that the third intermittent time length T6 of the liquid treatment device within a twelfth preset time length is less than or equal to the third target time length, and / or to count the continuous number N6 of times that the fourth intermittent time length T7 of the liquid treatment device within a thirteenth preset time length is less than or equal to the fourth target time length; a flow detection device, configured to detect the water output of the liquid treatment device; and the shunt control device 8 is specifically configured to, when the temperature detected by the first temperature detection device 5 is less than the first threshold value, control the on-off connection between the inlet of the shunt control device 8 and the first shunt branch 82 and the second shunt branch 84 according to the parameters monitored by at least one of the second temperature detection device, the time length detection device, the counting device, and the flow detection device.

[0129] In the technical solution, the parameter monitoring device further comprises a time length detection device, a flow detection device, and a timing device, etc., for monitoring time length, flow, number of times, etc. Through the above devices, whether the phase change device 3 needs to perform secondary heat exchange can be monitored in the following ways: the continuous working time length of the water-cooled heat exchanger 2, the water output of the water outlet within a certain time, or the intermittent time length of the intermittent water output of the water outlet within a certain time, etc. Of course, whether the phase change device 3 needs to perform secondary heat exchange can also be determined in combination with the temperature and the parameters monitored by the second monitoring device. That is, there are various ways to determine whether the phase change device 3 needs to perform secondary heat exchange, which can be set according to actual needs. For example, the total sum of the number of times that the intermittent time length of the intermittent water output of the water outlet within a certain time is less than a threshold value is greater than a preset value, or the total sum of the continuous number of times that the intermittent time length is less than the threshold value is greater than the preset value, which can be considered as needing the phase change device 3 to perform secondary heat exchange.

[0130] The total heat exchange power of the liquid treatment device is P, the heat exchange power of the water-cooled heat exchanger 2 is P1, the heat exchange power of the phase change device 3 is P2, P1=(0.5-0.7)P, and / or P2=(0.1-0.4)P. That is, the proportion of the allocated power P1 of the water-cooled heat exchanger 2 in the total power P is 0.5-0.7. The proportion of the allocated power P2 of the phase change device 3 in the total power P is 0.1-0.4. Further, the proportion of the power of the phase change device 3 is 0.2-0.31. Through the cooperation of the power ratio of the two, the high temperature difference of the water-cooled heat exchanger 2 can be fully utilized, and the efficiency of the water-cooled heat exchange is improved. At the same time, the high heat exchange efficiency of the phase change device 3 can be fully utilized at low temperature difference. Through the optimal configuration of the power, higher cooling efficiency can be realized. At the same time, this kind of power distribution, on the one hand, fully utilizes the heat exchange efficiency of the water-cooled heat exchanger 2 and the phase change device 3, that is, fully utilizes the heat exchange efficiency of the two, on the other hand, and can make the water flow of the liquid treatment device maintain a high flow rate in unit time; again, and can make the volume of the water-cooled heat exchanger 2 and the phase change device 3 be adapted, because if the water-cooled heat exchanger 2 is set to a higher power to achieve a higher heat exchange efficiency, a larger volume is needed, and a smaller power will bring a larger volume of the phase change device 3; and if the phase change device 3 is set to a higher power to achieve a higher heat exchange efficiency, a larger volume is needed, and a lower power of the phase change device 3 needs a larger volume of the water-cooled heat exchanger 2. The above inevitably increases the overall volume of the liquid treatment device, which does not facilitate the miniaturization of the device. The power of the two is adapted, which can make the volume of the two be adapted, that is, can ensure the overall heat exchange efficiency of the liquid treatment device, realize accurate temperature control, reduce temperature fluctuation, and also can ensure that the volume of the liquid treatment device will not be too large, so as to facilitate the placement on the table, and will not occupy too much space, and improve the user experience.

[0131] Further, the temperature difference between the inlet temperature and the outlet temperature of the water-cooled heat exchanger 2 is less than or equal to 55℃ and greater than or equal to 40℃. Further, the temperature difference between the inlet temperature and the outlet temperature of the phase change device 3 is less than or equal to 20℃ and greater than or equal to 10℃. Such a setting can limit the power of each heat exchanger through the temperature control of the outlet and inlet of the two heat exchangers, so as to limit the heat exchange efficiency of the two heat exchangers, thereby realizing the power distribution between the water-cooled heat exchanger 2 and the phase change device 3. In this way, the accuracy of the temperature regulation of the phase change device 3 can be improved, and the size of the phase change device 3 can be reduced, which is helpful for the miniaturization of the liquid treatment device. In addition, such a setting is also helpful for the cooperative temperature control between the water-cooled heat exchanger 2 and the phase change device 3, improves the accuracy of the outlet water temperature of the liquid treatment device, and improves the cooperative matching of the heat exchange efficiency of the water-cooled heat exchanger 2 and the phase change device 3, so that both the water-cooled heat exchanger 2 and the phase change device 3 can realize the maximum efficiency. By setting the temperature difference of the water-cooled heat exchanger 2 to be between 40℃ and 55℃, the efficiency of the water-cooled heat exchanger 2 can be ensured. By setting the temperature difference of the phase change device 3 to be between 10℃ and 20℃, the temperature can be further corrected in a small range on the basis of ensuring that the efficiency of the water-cooled heat exchanger 2 is fully realized. At this time, the temperature difference range is small, which can reduce the fluctuation of the corrected temperature, and at the same time, the efficiency of the phase change device 3 can also be fully realized.

[0132] Further, the outlet water temperature of the phase change device 3 is greater than or equal to 30℃ and less than or equal to 50℃. Further, the outlet water temperature of the phase change device 3 is greater than or equal to 40℃ and less than or equal to 50℃.

[0133] Further, the liquid treatment device comprises a water outlet assembly 6, and the water outlet flow of the water outlet assembly 6 is less than or equal to 7.5g / s. Such a setting can limit the heating demand and ensure the heating efficiency, so that the cooperation of the phase change device 3 and the water-cooled heat exchanger 2 can meet the heat exchange demand, so as to reduce the temperature fluctuation, thereby realizing the accurate control of the temperature.

[0134] Further, the phase change temperature of the phase change material in the phase change device 3 has a preset temperature difference with the outlet water temperature of the second water channel 24. By the preset temperature difference, the water discharged from the second water channel 24 can cause the phase change of the phase change material, so that the phase change material can change phase, thereby completing the control of the temperature of the water output by the second water channel 24.

[0135] Further, an absolute value of the preset temperature difference is less than or equal to 20℃, or an absolute value of the preset temperature difference is less than or equal to 10℃. This setting can improve the utilization rate of the phase change material, reduce the power consumption of the phase change device 3, improve the heating efficiency, improve the temperature stabilization effect of the phase change device 3, and reduce the volume of the phase change device 3, and promote the miniaturization of the overall structure. Of course, this setting can also avoid the situation that the temperature difference is too large, which causes the phase change device 3 to fail to meet the corresponding heat exchange demand, and can also avoid the situation that the temperature is too low to cause phase change, thereby causing the phase change device 3 to not work. In this way, the heat exchange effect is ensured, the stability of the large flow and the outlet water temperature is ensured, and the user experience is improved.

[0136] In any of the above technical solutions, the temperature change value of the outlet water temperature of the second waterway 24 in the preset time period is a, the temperature change value of the outlet water temperature of the phase change device 3 in the preset time period is b, and a-b>1.5℃. Further, a-b>3℃, that is, when the outlet water temperatures of the heat exchanger and the phase change device 3 both have deviations, the outlet water temperature deviation of the heat exchanger should be larger. That is, in the same time period, the temperature change value a of the outlet water temperature of the second waterway 24 is larger than the temperature change value b of the outlet water temperature of the phase change device 3, that is, the outlet water temperature of the second waterway 24 fluctuates more, and the outlet water temperature of the first heat exchange period fluctuates less.

[0137] In this technical solution, a-b is greater than 1.5℃, and further, a-b>3℃. On the one hand, the power consumption of the phase change material is reduced, the power effect of the heating module is ensured, and the heating efficiency is improved. On the other hand, the utilization rate of the phase change material is improved, and the temperature stabilization effect of the phase change device 3 is improved. Finally, the volume of the phase change device 3 is reduced, and the miniaturization of the overall structure is promoted.

[0138] Further, the total heat exchange amount of the phase change device 3 is greater than or equal to 25KJ. This setting can ensure the heat exchange efficiency of the phase change device 3, reduce the temperature fluctuation, and thus realize accurate control of the temperature. Also, the total heat exchange amount greater than or equal to 25KJ ensures that the phase change device 3 has a stable temperature effect.

[0139] Further, the phase change device 3 includes a phase change material, the phase change material includes paraffin, and the content of the phase change material is greater than or equal to 110g. This setting can ensure the heat exchange efficiency of the phase change device 3, reduce the temperature fluctuation, and thus realize accurate control of the temperature. Also, the content of the phase change material greater than or equal to 110g ensures that the phase change device 3 has a stable temperature effect.

[0140] Wherein, through the present application, the optimal heat exchange interval of the water-cooled heat exchanger 2 is to reduce the temperature of 100℃ boiled water to the interval of 45℃-60℃. Below this temperature interval, the heat exchange efficiency is lower, and above this temperature interval, the water convection heat exchange has a large cost advantage. The phase change device 3 can have an advantage of heat exchange efficiency at the tail end heat exchange.

[0141] Further, the absolute value of the difference between the outlet water temperature of the phase change device 3 and the target temperature is less than a preset temperature value, and the preset temperature value is greater than or equal to 0℃ and less than or equal to 7℃.

[0142] In this technical solution, the absolute value of the difference between the outlet water temperature of the phase change device 3 and the target temperature is less than a preset temperature value, and the preset temperature value is greater than or equal to 0℃ and less than or equal to 7℃, that is, the temperature difference between the temperature of the output water after temperature control by the phase change device 3 and the ideal temperature is less than 7℃, thereby improving the stability of the outlet water temperature. This setting makes the temperature fluctuation of the output water of the phase change device 3 moderate, and a large temperature fluctuation is avoided, and the requirement for the phase change device 3 due to high precision is reduced, thereby reducing the cost of the phase change device 3. The outlet water temperature can be greater than or less than the target temperature. The target temperature is the ideal temperature required by the phase change device 3, which is related to the target temperature of the water expected by the user. For example, generally, the liquid treatment device is preset with a target outlet water temperature, such as the liquid treatment device sets several temperature positions for the user to select to determine the target temperature of the water flowing out of the outlet of the liquid treatment device, and after the user selects the corresponding temperature position, the target outlet water temperature is determined, and the target temperature of the phase change device 3 is determined accordingly.

[0143] Generally, the maximum heating power of the existing small household appliances is 2300W, which can heat 7.35g / s of pure water from room temperature 25℃ to boiling. To ensure that all the outlet water is boiled for sterilization, the maximum flow of the liquid treatment device involved in the present application is not more than 7.5g / s; the heat exchange power of the water-cooled heat exchanger 2 in the room temperature fluctuation range is 1540W-1240W, and the actual outlet water temperature is between 50℃-60℃. The phase change device 3 can reduce 55℃±5℃ to 40℃±3℃, and the heat exchange power of the phase change device 3 is 210W-710W.

[0144] Wherein, the temperature in the liquid supply tank 42 is high, the heat exchange efficiency of the water-cooled heat exchanger 2 is low, and the phase change device 3 needs to provide higher cooling efficiency, and the consumption of the phase change material is also faster; limited by cost and other factors, if the heat exchange power is 700W, which meets the normal drinking water habit, and the continuous water output is not less than 35 seconds, the total heat exchange amount of the phase change material should be not less than 25kJ; generally, the phase change material at about 40℃ is usually phase change paraffin, and the heat storage density is about 200J / g-240J / g, so the total filling amount should be not less than 110g. The water outlet temperature of the water-cooled cooling module is higher than the temperature of the phase change material, so as to ensure that the phase change material can be phase changed, and the phase change material is consumed as little as possible to achieve longer cooling effect.

[0145] Embodiment two

[0146] As shown in Figure 1 and Figure 4 , embodiment two of the first aspect of the application provides a liquid treatment device, which comprises a liquid supply assembly 4, a heater 1, a water-cooled heat exchanger 2, a flow control device 8 and a phase change device. Wherein the heater 1 can heat the liquid flowing through; the water-cooled heat exchanger 2 comprises a first water path 22, a second water path 24 and a heat exchange part 26, the heat exchange part 26 is arranged between the first water path 22 and the second water path 24, the first water path 22 and the second water path 24 exchange heat through the heat exchange part 26, and the second water path 24 is connected with the outlet of the heater 1; the flow control device 8 comprises a flow control device inlet and a first flow control branch 82 and a second flow control branch 84 which can be communicated and disconnected with the flow control device inlet, and the flow control device inlet is connected with the outlet of the second water path 24; a first temperature detection device 5 is arranged corresponding to the outlet of the liquid supply assembly 4 and / or the inlet of the first water path 22, which is used for detecting the temperature of the outlet of the liquid supply assembly 4 and / or the inlet of the first water path 22; the phase change device 3 is connected with the second flow control branch 84, and can exchange heat with the liquid flowing out of the second flow control branch 84.

[0147] The liquid processing device provided by the embodiment of the present application comprises a liquid supply assembly 4, a heater 1, a water-cooled heat exchanger 2, a flow control device 8, a first temperature detecting device 5 and a phase change device 3. The liquid supply assembly 4 serves as a liquid supply source to supply the required liquid such as water to the heater 1 or the water-cooled heat exchanger 2. The water-cooled heat exchanger 2 comprises a first water channel 22, a second water channel 24 and a heat exchange part 26, and the second water channel 24 is connected to the outlet of the heater 1. The phase change device 3 is connected to the outlet of the second water channel 24, and the phase change device 3 comprises a phase change material. When the liquid in the second water channel 24 passes through the phase change device 3, the phase change material exchanges heat with the liquid in the second water channel 24, thereby cooling or chilling the liquid in the second water channel 24. The first temperature detecting device 5 can obtain the temperature of the liquid flowing into the first water channel 22. Since the water-cooled heat exchanger 2 is greatly affected by the temperature of the liquid flowing into the first water channel 22, that is, the temperature of the liquid in the first water channel 22 will directly affect the heat exchange effect of the water-cooled heat exchanger 2, or will directly determine the temperature of the liquid after heat exchange flowing out of the second water channel 24. Therefore, the first temperature detecting device 5 is arranged to determine the water flow direction of the water-cooled heat exchanger 2. Specifically, when the first temperature detecting device 5 detects a relatively low temperature, the water-cooled heat exchanger 2 can be used to cool the boiling water to a suitable drinking temperature, and the hot water after heat exchange of the water-cooled heat exchanger 2 is directly output through the first flow branch 82 to avoid excessive cooling. When the first temperature detecting device 5 detects a relatively high temperature, the water-cooled heat exchanger 2 cannot be used to cool the boiling water to a suitable drinking temperature. Therefore, the flow control device 8 is controlled to connect the phase change device 3 to the water channel, so that the liquid after heat exchange of the water-cooled heat exchanger 2 flows from the second water channel 24 into the second flow branch 84 and enters the phase change device 3, thereby performing secondary cooling on the liquid in the second flow branch 84. This arrangement can form a double heat exchange device by using the water-cooled heat exchanger 2 and the phase change device 3, and can quickly cool the boiling liquid to the required temperature. Compared with the cooling mode of using only the water-cooled heat exchanger 2, it takes a long time to directly reduce the temperature to 45℃. In the present application, the water-cooled heat exchanger 2 and the phase change device 3 are arranged to reduce the heat exchange requirement of the water-cooled heat exchanger 2, thereby shortening the pipeline of the water-cooled heat exchanger 2, selecting a water-cooled heat exchanger 2 with low efficiency, thereby reducing the volume and cost of the water-cooled heat exchanger 2, and further reducing the overall volume and cost of the product. The temperature of the water is controlled by the phase change material, so that the temperature of the outlet water is maintained near the phase change temperature, thereby ensuring the controllability of the outlet water temperature. When the water-cooled heat exchanger 2 is used alone, the temperature of the outlet water is not very stable due to the great influence of the ambient temperature on the liquid temperature.Meanwhile, the single water-cooled heat exchange module is limited by the structure size and efficiency, and cannot reduce the boiling water to below 50℃, while the additional phase change device 3 can further reduce the outlet water temperature to below 50℃, so that the outlet water temperature of the device is more suitable for human consumption. In addition, since the temperature difference between the boiling water and the normal temperature water is large before water convection heat exchange, the water-cooled heat exchange efficiency is high; and the phase change device 3 utilizes the constant phase change temperature of the phase change material, and the efficiency of low temperature difference heat exchange is higher than that of the water-cooled heat exchanger 2, so that the combination of the water-cooled heat exchanger 2 in front and the phase change device 3 at the back can further improve the cooling efficiency. Further, by setting the first temperature detection device 5 and the shunt control device 8, the heat exchange efficiency of the water-cooled heat exchanger 2 can be determined based on the temperature before the water-cooled heat exchanger 2, so that whether the hot water after the water-cooled heat exchange needs to be further cooled by the phase change device 3 can be determined based on the heat exchange efficiency of the water-cooled heat exchanger 2, so that the influence of the supply liquid temperature can be reduced, the output liquid temperature is more controllable and stable, and the boiling water or beverage is not excessively cooled due to the excessively low supply liquid temperature. Also, the water-cooled heat exchanger 2 can avoid the situation that the heat exchange efficiency is too low due to the high supply liquid temperature, which leads to insufficient cooling and further leads to the failure to output the required temperature of the user.

[0148] The device can be applied in a non-continuous drinking water system, and the boiling water is rapidly cooled by the phase change material heat storage and environmental heat dissipation. The device has the characteristics of no additional energy consumption in the cooling process, simple structure, high efficiency, and reusability, and has very good market application prospect and value.

[0149] The phase change cooling module has the characteristics of rapidly absorbing a large amount of heat at a constant temperature, and can rapidly store the heat of high-temperature hot water in the phase change material assembly, and the temperature of the phase change material is not higher than the phase change temperature point, thereby ensuring the continuous heat exchange process until the temperature of the hot water is balanced with the temperature of the phase change material. The phase change material is a solid-liquid phase change material, and the phase change temperature is between 40℃-45℃, such as paraffin composite phase change material, salt material, etc.

[0150] Generally, the maximum heating power of the existing small household appliances is 2300W, which can heat 7.35g / s of pure water from room temperature 25℃ to boiling. To ensure that all the outlet water is boiled for sterilization, the maximum flow of the liquid treatment device involved in the present application is not more than 7.5g / s; the heat exchange power of the water-cooled heat exchanger 2 in the room temperature fluctuation range is 1540W-1240W, so the actual outlet water temperature is between 50℃-60℃. The phase change device 3 can reduce 55℃±5℃ to 40℃±3℃, and the heat exchange power of the phase change device 3 is 210W-710W.

[0151] Wherein, the temperature in the liquid supply tank 42 is high, the heat exchange part 26 of the water-cooled heat exchanger 2 has low efficiency, and the phase change device 3 needs to provide higher cooling efficiency, and the consumption of the phase change material is also faster; if the heat exchange power is 700W, which meets the normal drinking water habit, and the continuous water output is not less than 35 seconds, the total heat exchange amount of the phase change material should be not less than 25kJ; generally, the phase change material at about 40℃ is usually phase change paraffin, and the heat storage density is about 200J / g-240J / g, and the total filling amount should be not less than 110g.

[0152] The water outlet temperature of the water-cooled cooling module is higher than the phase change material temperature, so as to ensure that the phase change material can change phase under the premise of as little consumption of the phase change material as possible, and realize longer cooling effect.

[0153] Wherein, through the application, the best heat exchange interval of the water-cooled heat exchanger 2 is to cool the 100℃ boiled water to the interval of 45℃-60℃. Below this temperature interval, the heat exchange efficiency is low, and above this temperature interval, the water convection heat exchange has a large cost advantage. And the phase change device 3 can have the advantage of heat exchange efficiency at the tail end.

[0154] Further, as shown in Figure 1 , the flow splitting control device 8 includes a flow splitting valve, and the flow splitting valve is a three-way valve.

[0155] In this embodiment, the flow splitting control device 8 includes a flow splitting valve, and the flow splitting valve is set as a three-way valve, and the three-way valve is connected with the second water path 24 and the first flow splitting branch 82 and the second flow splitting branch 84 respectively.

[0156] In the above embodiment, the outlet of the first water path 22 is connected with the inlet of the heater 1, and the liquid flowing through the first water path 22 enters the heater 1 after being heated, and then enters the second water path 24.

[0157] In this embodiment, the outlet of the first water path 22 is connected with the inlet of the heater 1. That is, the water of the first water path 22 after heat exchange with the heated liquid is directly input into the heater 1, and then is heated by the heater 1 and output. Through this kind of setting, the hot water in the first water path 22 can be reused, so as to avoid the waste of heat and improve the heating efficiency of the whole product. At the same time, the first water path 22 can be directly connected with the liquid supply device such as the liquid supply pipe and the liquid supply tank 42, so that the liquid supply device, the first water path 22 and the heater 1 form a series connection.

[0158] Further, as shown in Figure 1 and Figure 3 , the inlet of the heater 1 is only connected with the first water path 22, that is, the water in the heater 1 all comes from the first water path 22. In another scheme, the inlet of the heater 1 is connected with the first water path 22 and the liquid supply device at the same time, that is, there are two branches that can supply water to the heater 1 at the same time.

[0159] In the above embodiments, as shown in Figure 1 and Figure 2 The phase change device 3 further comprises a shell, a phase change channel arranged in the shell or around the shell, connected with the outlet of the second waterway 24, a phase change material arranged in the shell, the phase change channel can exchange heat with the liquid in the phase change channel during phase change; the phase change channel and the second waterway 24 are integrated, or the phase change channel and the second waterway 24 are detachably connected, the phase change channel and the shell are detachably connected, or the phase change channel and the shell are integrated.

[0160] In this embodiment, the phase change device 3 comprises a shell, a phase change material and a phase change channel. The phase change channel can be arranged in the shell and integrated with the shell or detachable. The phase change channel can also be a pipe arranged outside the shell. Further, the phase change channel and the second waterway 24 can be connected into a pipe, at this time, the phase change material and the shell are integrated. Of course, the phase change channel and the second waterway 24 can also be detachably connected. That is, in this application, the phase change channel can be integrated with the phase change material and the shell, at the same time, the phase change channel can also exist independently from the integration of the phase change material and the shell. When the phase change channel exists independently, it can be integrated with the second waterway 24 or connected in a detachable manner. That is, the structure of the phase change device 3 can be set in various ways according to actual needs. But the best is that the shell, the phase change material and the phase change channel are integrated and then detachably connected with the second waterway 24. Further, the liquid treatment device further comprises a liquid supply device for supplying water.

[0161] The phase change device 3 comprises a phase change channel and a phase change material forming a phase change heat storage assembly. The phase change channel has a row or pipe structure, which can effectively increase water flow formation and prolong heat exchange time, realize rapid cooling of boiling water, and the lowest temperature can reach 40℃.

[0162] Further, as shown in Figure 1 and Figure 2 The liquid supply assembly 4 comprises a liquid supply tank 42 and a liquid supply channel 44, the outlet of the liquid supply channel 44 is connected with the inlet of the heater 1 and the cooling pipe; the inlet of the liquid supply channel 44 is connected with an external water source, or the liquid supply device further comprises a liquid supply tank 42, and the inlet of the liquid supply channel 44 is connected with the liquid supply tank 42.

[0163] In this embodiment, the liquid supply assembly 4 comprises a liquid supply tank 42 and a liquid supply channel 44, and the outlet of the liquid supply channel 44 is connected to the inlet of the heater 1. In this case, the liquid supply channel 44 can directly supply water to the heater 1, or the liquid supply channel 44 can supply water to the heater 1 through the first water channel 22. In addition, the liquid supply channel 44 can also be connected to the first water channel 22 to supply water to the first water channel 22. In this way, the liquid supply channel 44 can ensure the water supply for the product.

[0164] In this case, the inlet of the liquid supply channel 44 can be directly connected to the water pipe at the user's home, and in this case, the liquid supply tank 42 can be omitted to simplify the structure of the product. However, the product must be used close to the water pipe. In addition, the liquid supply tank 42 can also be arranged in the liquid treatment device, and in this case, the liquid supply tank 42 can be used to stably supply water, so that the product can be installed in a more flexible and convenient position.

[0165] Further, as shown in Figure 1 and Figure 2 , the liquid treatment device further comprises a pump body 46 arranged on the liquid supply channel 44.

[0166] In this embodiment, the liquid treatment device comprises the pump body 46. The pump body 46 is arranged on the liquid supply channel 44, and the pump body 46 can be used to control the start and stop of the liquid supply channel 44, and can also be used to control the flow of the supplied liquid, so as to ensure the cooling effect of the water-cooled heat exchanger 2 and the water output.

[0167] In the above embodiment, as shown in Figure 1 and Figure 2 , the liquid treatment device further comprises a liquid storage tank 9. The liquid storage tank 9 is connected to the outlet of the heater 1 and / or the outlet of the second water channel 24 and / or the outlet of the phase change device 3 to collect the liquid output from the outlet of the heater 1 and / or the outlet of the second water channel 24 and / or the outlet of the phase change device 3.

[0168] In this embodiment, the liquid processing device further comprises a liquid storage tank 9, which is capable of collecting the liquid cooled after being heated. The liquid storage tank 9 can be connected with one or more of the heater 1, the second water path 24 and the phase change device 3, so as to collect the water output by one or more of the heater 1, the second water path 24 and the phase change device 3. Through the liquid storage tank 9, on one hand, the water of different temperatures can be mixed in the liquid storage tank 9 and then output, so as to further adjust the temperature. For example, the liquid storage tank 9 is connected with the outlet of the heater 1, so as to directly output the hot water. The liquid storage tank 9 is connected with the outlet of the second water path 24 and the outlet of the heater 1, so as to neutralize the liquid output by the outlet of the heater 1 and the outlet of the second water path 24 when the ambient temperature is low, so as to adjust the liquid of the required temperature. Or the liquid storage tank 9 is connected with the outlet of the phase change device 3, so as to output the water of the required temperature of the user after being cooled twice. Meanwhile, the existing instant device usually has a small water output and is easy to branch, which results in a poor user experience. However, after the liquid storage tank 9 is arranged, the liquid can be stored first, and then the liquid is uniformly output when the amount reaches a certain amount, so as to reduce the waiting time of the user, avoid the water output branching and improve the user experience.

[0169] Further, the control switch is arranged on any connection channel between the liquid storage tank 9 and the heater 1, the second water path 24 and the phase change device 3. Through the control switch, the on-off of the corresponding connection channel can be controlled, so as to control the connection between the liquid storage tank 9 and the heater 1, the second water path 24 and the phase change device 3 in the actual process.

[0170] Further, the liquid processing device further comprises a water outlet assembly 6. The water outlet assembly 6 is connected with the outlet of at least one of the liquid storage tank 9, the second water path 24 and the phase change device 3.

[0171] In this embodiment, when the liquid storage tank 9 is arranged, the water outlet assembly 6 is connected with the liquid storage tank 9. The water outlet assembly 6 directly outputs the liquid in the liquid storage tank 9. When the liquid storage tank 9 is not arranged, the water outlet assembly 6 is connected with the outlet of the second water path 24, so as to output the liquid passing through the water-cooled heat exchanger 2 from the water outlet assembly 6. When the water outlet assembly 6 is connected with the outlet of the phase change device 3, the liquid passing through the water-cooled heat exchanger 2 and the phase change device 3 can be output. In the actual process, the connection position of the water outlet assembly 6 can be arranged according to the requirement, so as to output the water of different temperatures.

[0172] In another embodiment, the water outlet assembly 6 can be connected with the liquid storage tank 9, the second water path 24 and the phase change device 3 respectively. Since the temperatures of the liquid flowing out of the liquid storage tank 9, the second water path 24 and the phase change device 3 are different, the connection relationship between the water outlet assembly 6 and the liquid storage tank 9, the second water path 24 and the phase change device 3 can be controlled, so as to control the temperature of the water output by the water outlet assembly 6.

[0173] In the above embodiment, the water-cooled heat exchanger 2 comprises a tube heat exchange structure or a row heat exchange structure. The specific structure of the water-cooled heat exchanger 2 can be set as needed, and the tube heat exchange structure and the row heat exchange structure are more common and easy to purchase, so the cost can be reduced. In the above embodiment, the heater 1 comprises an instant heater 1 and a non-instant heater.

[0174] In the above embodiment, the heater 1 is an instant heater. The instant heater can quickly heat the liquid to boiling, achieving the effect of instant heating and drinking. The instant heater 1 can be a thick mode heating pipe or a PTC pipe.

[0175] In the above embodiment, the first water path 22 and the second water path 24 each comprise a metal part and a non-metal part. The first water path 22 and the second water path 24 contact the heat exchange part 26 through the metal part. The part of the first water path 22 and the second water path 24 that does not contact the heat exchange part 26 is the non-metal part.

[0176] In this embodiment, the first water path 22 comprises a metal part and a non-metal part. The second water path 24 comprises a metal part and a non-metal part. The metal part is used to contact the heat exchange part 26. Through the good thermal conductivity of the metal part, the heat exchange efficiency between the first water path 22 and the second water path 24 is ensured. At the same time, the part of the first water path 22 and the second water path 24 that does not contact the water-cooled heat exchanger 2 is set as a non-metal part, which can prevent the temperature of the liquid from being affected by the room temperature, thereby ensuring that the liquid treatment device can discharge the liquid at the preset temperature. For example, plastic can be used as the non-metal part. The thermal conductivity of plastic is poor, which can effectively prevent the temperature of the liquid from being affected by the room temperature. At the same time, plastic has low cost and good toughness, which is conducive to the installation and maintenance of the equipment.

[0177] In the above embodiment, the liquid treatment device further comprises a heat dissipation device, which is arranged corresponding to the phase change device 3 and used to dissipate heat for the phase change device 3.

[0178] In this embodiment, the liquid treatment device further comprises a heat dissipation device, which dissipates heat for the phase change device 3, thereby ensuring that the phase change device 3 can always be kept at the same temperature, so that the phase change material can always be kept in a state of being able to absorb heat or being able to release heat, so that the device can be continuously used. Of course, when the liquid treatment device does not need to be continuously used, the heat dissipation device can also not be arranged.

[0179] Further, the heat dissipation device comprises one or more of an air-cooled heat dissipation device, a heat dissipation fin, and a water-cooled heat dissipation device. Because the air-cooled heat dissipation device, the heat dissipation fin, and the water-cooled heat dissipation device are relatively common, they are easy to purchase and install, so the product cost can be reduced.

[0180] In the above embodiment, the liquid treatment device comprises at least one of an instant heating container, a water dispenser, and a beverage machine.

[0181] In the above embodiment, by setting the preset temperature range to 42℃-48℃, which is the most suitable temperature for human consumption, and controlling the phase change temperature of the phase change material to 42℃-46℃, the phase change material can undergo a solid-liquid phase change when the liquid in the second water channel 24 passes through the phase change device 3, thereby exchanging heat with the liquid in the second water channel 24. This ensures that the temperature of the liquid passing through the phase change device 3 remains within the preset temperature range, and thus ensures that the temperature of the liquid discharged from the second water channel can be controlled between 46℃ and 60℃ through the water-cooled heat exchanger. This system can be applied to discontinuous drinking water systems, using the phase change material to store heat and the environment to dissipate heat to quickly cool boiling water. This system has the characteristics of no additional energy consumption during the cooling process, simple structure, high efficiency, and reusability, and has very good market application prospects and value.

[0182] Example 3

[0183] like Figure 2 and Figure 3 As shown, the third embodiment of the present invention provides a liquid processing device including a boiling water channel 7, comprising: a liquid supply component 4, a heater 1, a water-cooled heat exchanger 2, a flow control device 8, a phase change device 3, and a boiling water channel 7. The system includes: a heater 1, capable of heating the flowing liquid; a water-cooled heat exchanger 2, comprising a first water path 22, a second water path 24, and a heat exchange section 26, the heat exchange section 26 being disposed between the first water path 22 and the second water path 24, the first water path 22 and the second water path 24 exchanging heat through the heat exchange section 26, and the second water path 24 being connected to the outlet of the heater 1; a diversion control device 8, comprising a diversion control device inlet and a first diversion branch 82 and a second diversion branch 84 capable of being connected to and disconnected from the diversion control device inlet, the diversion control device inlet being connected to the outlet of the second water path 24; a first temperature detection device 5, corresponding to the outlet of the liquid supply component 4 and / or the inlet of the first water path 22, used to detect the temperature of the outlet of the liquid supply component 4 and / or the inlet of the first water path 22; and a phase change device 3, connected to the second diversion branch 84, capable of performing heat exchange treatment on the liquid flowing out of the second diversion branch 84. The liquid handling device also includes a boiling water channel 7, and a boiling water channel 7 and a phase change device 3 are connected in parallel at the outlet of the heater 1.

[0184] The liquid processing device provided by the embodiment of the present application comprises a liquid supply assembly 4, a heater 1, a water-cooled heat exchanger 2, a flow control device 8, a first temperature detecting device 5 and a phase change device 3. The liquid supply assembly 4 serves as a liquid supply source to supply the required liquid such as water to the heater 1 or the water-cooled heat exchanger 2. The water-cooled heat exchanger 2 comprises a first water channel 22, a second water channel 24 and a heat exchange part 26, and the second water channel 24 is connected to the outlet of the heater 1. The phase change device 3 is connected to the outlet of the second water channel 24, and the phase change device 3 comprises a phase change material. When the liquid in the second water channel 24 passes through the phase change device 3, the phase change material exchanges heat with the liquid in the second water channel 24, thereby cooling or chilling the liquid in the second water channel 24. The first temperature detecting device 5 can obtain the temperature of the liquid flowing into the first water channel 22. Since the water-cooled heat exchanger 2 is greatly affected by the temperature of the liquid flowing into the first water channel 22, that is, the temperature of the liquid in the first water channel 22 will directly affect the heat exchange effect of the water-cooled heat exchanger 2, or will directly determine the temperature of the liquid after heat exchange flowing out of the second water channel 24. Therefore, the first temperature detecting device 5 is arranged to determine the water flow direction of the water-cooled heat exchanger 2. Specifically, when the first temperature detecting device 5 detects a relatively low temperature, the water-cooled heat exchanger 2 can be used to cool the boiling water to a suitable drinking temperature, and the hot water after heat exchange of the water-cooled heat exchanger 2 is directly output through the first flow branch 82 to avoid excessive cooling. When the first temperature detecting device 5 detects a relatively high temperature, the water-cooled heat exchanger 2 cannot be used to cool the boiling water to a suitable drinking temperature. Therefore, the flow control device 8 is controlled to connect the phase change device 3 to the water channel, so that the liquid after heat exchange of the water-cooled heat exchanger 2 flows from the second water channel 24 into the second flow branch 84 and enters the phase change device 3, thereby performing secondary cooling on the liquid in the second flow branch 84. This arrangement can form a double heat exchange device by using the water-cooled heat exchanger 2 and the phase change device 3, and can quickly cool the boiling liquid to the required temperature. Compared with the cooling mode of using only the water-cooled heat exchanger 2, it takes a long time to directly reduce the temperature to 45℃. In the present application, the water-cooled heat exchanger 2 and the phase change device 3 are arranged to reduce the heat exchange requirement of the water-cooled heat exchanger 2, thereby shortening the pipeline of the water-cooled heat exchanger 2, selecting a water-cooled heat exchanger 2 with low efficiency, thereby reducing the volume and cost of the water-cooled heat exchanger 2, and further reducing the overall volume and cost of the product. The temperature of the water is controlled by the phase change material, so that the temperature of the outlet water is maintained near the phase change temperature, thereby ensuring the controllability of the outlet water temperature. When the water-cooled heat exchanger 2 is used alone, the temperature of the outlet water is not very stable due to the great influence of the ambient temperature on the liquid temperature.Meanwhile, the single water-cooling heat exchange module is limited by structure size and efficiency, and cannot reduce the boiled water to below 50℃, while the additional phase change device 3 can further reduce the outlet water temperature to below 50℃, so that the outlet water temperature of the device is more suitable for human consumption. In addition, since the temperature difference between the boiling water and the normal temperature water is large before water convection heat exchange, the water-cooling heat exchange efficiency is high; and the phase change device 3 uses the constant phase change temperature of the phase change material, and the efficiency of low-temperature difference heat exchange is higher than that of the water-cooling heat exchanger 2, so that the combination of the water-cooling heat exchanger 2 in front and the phase change device 3 at the back can further improve the cooling efficiency. Further, by setting the first temperature detection device 5 and the shunt control device 8, the heat exchange efficiency of the water-cooling heat exchanger 2 can be determined based on the temperature before the water-cooling heat exchanger 2, so that whether the boiled water after the water-cooling heat exchange needs to be further cooled by the phase change device 3 can be determined based on the heat exchange efficiency of the water-cooling heat exchanger 2, so that the influence of the supply liquid temperature can be reduced, the output liquid temperature is more controllable and stable, the boiled water or beverage is not excessively cooled due to the too low supply liquid temperature, and the insufficient cooling caused by the too high supply liquid temperature and the failure to output the required temperature of the user due to the too low heat exchange efficiency of the water-cooling heat exchanger 2 can be avoided. Meanwhile, the boiling water channel 7 and the phase change device 3 are connected in parallel with the outlet of the heater 1. The water heated by the heater 1 can be output through the boiling water channel 7, so that the product can output the boiled water directly heated by the heater 1 while outputting the boiled water suitable for the user to directly drink, so as to facilitate the user to make tea, coffee, etc.

[0185] In the embodiment, the other structures of the liquid treatment device are basically the same as those of embodiment two, and will not be described here.

[0186] The embodiment of the second aspect of the application provides a control method of a liquid treatment device, which is used for the liquid treatment device provided in any one of the embodiments of the first aspect. The structure of the liquid treatment device is as shown in Figures 1 to 4 The control method is as shown in Figure 5 The control method comprises the following steps.

[0187] S502, acquiring the temperature detected by the first temperature detection device;

[0188] S504, when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, controlling the inlet of the shunt control device to be communicated with the second shunt branch to perform cooling through the phase change device.

[0189] According to the control method of the liquid processing device provided by the root application, the on-off between the inlet of the shunt control device and the first shunt branch and the second shunt branch can be controlled based on the supply liquid temperature. That is, whether the liquid after heat exchange in the water-cooled heat exchanger needs to pass through the phase change device for secondary heat exchange can be determined by the supply liquid temperature. Generally, when the supply liquid temperature is greater than the first threshold value, it indicates that the supply liquid temperature is high, and therefore the heat exchange demand is large, so that secondary heat exchange through the phase change device is needed to compensate for the low heat exchange efficiency of the water-cooled heat exchanger due to the excessively high supply liquid temperature, thereby improving the overall heat exchange efficiency of the liquid device, achieving small fluctuation, and improving the accuracy of temperature control. On the contrary, it indicates that the heat exchange demand is not large, and at this time, the water flow direction needs to be further judged according to the subsequent conditions.

[0190] Further, the first threshold value is 30℃, which is less than or equal to 37℃.

[0191] In this embodiment, the first threshold value should be less than 37℃ and greater than or equal to 30℃. Since the water-cooled heat exchanger uses the liquid flowing out of the liquid supply assembly to exchange heat with the liquid flowing out of the heater, and the temperature of the liquid flowing out of the heater is certainly 100℃ boiling water, the temperature detected by the temperature detection device will directly affect the heat exchange effect of the water-cooled heat exchanger. If the first threshold value is set to 35℃, when the temperature detected by the temperature detection device is higher than the first threshold value 35℃, it indicates that the temperature of the liquid flowing out of the second waterway after heat exchange is high and cannot meet the direct drinking requirement, and therefore the liquid in the second waterway needs to flow into the second shunt branch and then into the phase change device for secondary cooling to make the liquid reach the appropriate temperature before being discharged.

[0192] In the above embodiment, the control method further comprises: when the temperature detected by the first temperature detection device is less than the first threshold value, obtaining the inlet temperature of the heater, and when the inlet temperature of the heater is greater than or equal to a second threshold value, controlling the inlet of the shunt control device to communicate with the second shunt branch to cool through the phase change device; or calculating the number N1 of times that the inlet temperature of the heater is greater than or equal to the second threshold value within a first preset time period, and when the number N1 is greater than a first preset number, controlling the inlet of the shunt control device to communicate with the second shunt branch to cool through the phase change device; or calculating the continuous number N2 of times that the inlet temperature of the heater is greater than or equal to the second threshold value within a second preset time period, and when the number N2 is greater than a second preset number, controlling the inlet of the shunt control device to communicate with the second shunt branch to cool through the phase change device.

[0193] In the embodiment, when the inlet temperature of the heater is higher than the second threshold value, it is considered that the inlet temperature of the heater is too high, and it is generally considered that the heat exchange effect of the heat exchanger is poor, so the temperature of the water flowing out of the second water path is predicted to be higher or the temperature fluctuation is larger, and therefore, the shunt control device inlet is controlled to be in conduction with the second shunt branch at this time, so that the liquid in the second water path flows into the second shunt branch and then flows into the phase change device, thereby performing secondary cooling on the liquid, so that the liquid is discharged after reaching the appropriate temperature. Further, in order to avoid misjudgment, when the liquid supply temperature is low, the number N1 of times that the inlet temperature is greater than or equal to the second threshold value within the first preset time period, or the continuous number N2 of times that the inlet temperature is greater than or equal to the second threshold value within the second preset time period, can be further calculated. If the number N1 or the continuous number N2 is greater than a specified threshold value, it is considered that the inlet temperature of the heater is indeed too high, and it is not an occasional phenomenon, so the phase change device needs to perform secondary heat exchange. If the number N1 or the continuous number N2 is less than the specified threshold value, it is considered that the inlet temperature of the heater is not continuously too high, but it is an occasional phenomenon, so the phase change device does not need to perform secondary heat exchange. Through the inlet temperature of the heater and the high frequency of the high inlet temperature, the heat exchange efficiency of the water-cooled heat exchanger is determined twice, which ensures the control accuracy of the temperature.

[0194] In the above embodiment, the control method further comprises: when the temperature detected by the first temperature detection device is less than the first threshold value, obtaining the liquid temperature at the outlet of the second water path and / or the liquid temperature at the inlet of the shunt control device, and when the liquid temperature at the outlet of the second water path and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to a third threshold value, controlling the inlet of the shunt control device to communicate with the second shunt branch to perform cooling through the phase change device; or calculating the number N3 of times that the liquid temperature at the outlet of the second water path and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to the third threshold value within a third preset time period, and when the number N3 is greater than a third preset number, controlling the inlet of the shunt control device to communicate with the second shunt branch to perform cooling through the phase change device; or calculating the continuous number N4 of times that the liquid temperature at the outlet of the second water path and / or the liquid temperature at the inlet of the shunt control device is greater than or equal to the third threshold value within a fourth preset time period, and when the number N4 is greater than a fourth preset number, controlling the inlet of the shunt control device to communicate with the second shunt branch to perform cooling through the phase change device.

[0195] In this embodiment, when the supply liquid temperature is low, the temperature of the liquid after heat exchange of the heat exchanger can be further determined. If the temperature of the output liquid after heat exchange of the heat exchanger is high, it indicates that the heat exchange efficiency of the water-cooled heat exchanger is reduced, and thus the phase change device needs to be further cooled. Of course, the number of times or the number of consecutive times that the temperature of the output liquid after heat exchange of the heat exchanger is high within a certain time period can be counted to determine whether the heat exchange efficiency of the water-cooled heat exchanger is reduced. If the number of times or the number of consecutive times that the temperature of the output liquid after heat exchange of the heat exchanger is high is large, it indicates that the heat exchange efficiency of the water-cooled heat exchanger is reduced, and thus the phase change device needs to be further cooled.

[0196] In the above embodiment, the control method further includes: when the temperature detected by the first temperature detection device is less than the first threshold value, obtaining a continuous working time T1 of the water-cooled heat exchanger; when T1 is greater than or equal to a fifth preset time length, controlling the inlet of the flow splitting control device to communicate with the second flow splitting branch to cool through the phase change device; and when T1 is less than the fifth preset time length, controlling the inlet of the flow splitting control device to communicate with the first flow splitting branch.

[0197] In this embodiment, when the supply liquid temperature is low, the continuous working time T1 of the water-cooled heat exchanger can be further obtained. If the working time of the water-cooled heat exchanger is relatively long, the heat exchange efficiency of the water-cooled heat exchanger will be reduced, and thus it can be predicted that the heat exchange efficiency of the water-cooled heat exchanger has indeed decreased due to long-time working. At this time, secondary heat exchange can be enabled. Conversely, if the working time of the water-cooled heat exchanger is relatively short, it is generally believed that the working efficiency of the water-cooled heat exchanger will not be too low, and thus it is believed that the high temperature is an occasional phenomenon, and the phase change device does not need to be introduced for secondary heat exchange. This kind of setting makes a double determination on the heat exchange efficiency of the water-cooled heat exchanger through the inlet temperature of the heater and the working time of the water-cooled heat exchanger, and ensures the control accuracy of the temperature.

[0198] In the above embodiment, the control method further includes: when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, obtaining a continuous working time T2 of the phase change device; and when T2 is greater than or equal to a sixth preset time length, cooling the phase change device.

[0199] In this embodiment, when the supply liquid temperature is too high, the continuous working time T2 of the phase change device can be further determined. If the working time of the phase change device is too long, it is not conducive to the reuse of the phase change material, and thus the cooling device can be started to assist in cooling and improve the reuse of the phase change material.

[0200] In the above embodiment, the control method further includes: when the temperature detected by the first temperature detection device is less than the first threshold value, obtaining a continuous working time T3 of the phase change device; and when T3 is greater than or equal to a seventh preset time length, cooling the phase change device, or controlling the inlet of the flow splitting control device to communicate with the first flow splitting branch.

[0201] In the embodiment, when the working time of the phase change device is too long and the reuse of the phase change material is not conducive, the heat dissipation device is started to assist heat dissipation, and the reuse of the phase change material is improved.

[0202] In the above embodiment, the control method further includes: when the temperature detected by the first temperature detection device is less than the first threshold, obtaining the water output A1 of the liquid treatment device within an eighth preset time length; when the water output A1 is greater than or equal to a first preset water amount, controlling the inlet of the shunt control device to communicate with the second shunt branch to cool the phase change device; and when the water output A1 is less than the preset water amount, controlling the inlet of the shunt control device to communicate with the first shunt branch.

[0203] In the embodiment, it is monitored that the water output of the liquid device is relatively large within a certain time length, that is, the machine is in a continuous use state, it is predicted that the heat exchange efficiency of the water-cooled heat exchanger is reduced, in order to ensure the accuracy and precision of the water temperature of the liquid device, the liquid is distributed to the phase change device, so as to realize the maximization of the efficiency utilization and ensure the stability and precision of the water temperature of the liquid device.

[0204] In the above embodiment, the control method further includes: when the temperature detected by the first temperature detection device is greater than or equal to the first threshold, obtaining the water output A2 of the liquid treatment device within a ninth preset time length; and when the water output A2 is greater than or equal to a second preset water amount, cooling the phase change device.

[0205] In the embodiment, the temperature detected by the first temperature detection device is greater than or equal to the first threshold, at this time, heat exchange is performed through the phase change device, if it is found that the water output is large at this time, the reuse of the phase change device is low, so the heat dissipation device can be started to assist heat dissipation, and the reuse of the phase change device is improved.

[0206] In the above embodiment, the control method further includes: when the temperature detected by the first temperature detection device is greater than or equal to the first threshold, calculating a first intermittent time length T4 of water output of the liquid treatment device within a tenth preset time length; and when T4 is less than or equal to a first target time length, cooling the phase change device.

[0207] In the embodiment, the first intermittent time length of water output within the fifth preset time length is obtained, and the number N3 of times that the first intermittent time length is less than the first target time length is calculated, if N3 is greater than a third preset number of times, it means that the number of times that the intermittent time length is relatively long is relatively large, which means that the water output is slow, which also indirectly reflects that the heat exchange efficiency is low, so the phase change device can be introduced for secondary heat exchange. On the contrary, it means that the heat exchange efficiency is high, so the phase change device can not be introduced for secondary heat exchange. This kind of setting makes a double judgment through the temperature and the intermittent time length of the water output, further ensures the demand of the heat exchange efficiency, and makes the temperature control more accurate.

[0208] In the embodiment, when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, heat exchange is performed by the phase change device, and if the discontinuous time of the water outlet quantity is relatively small at this time, the phase change device is always working. To avoid the low reusability of the phase change device, the heat dissipation device is enabled to assist heat dissipation, and the reusability of the phase change device is improved. In this way, the phenomenon that the efficiency of the phase change material is reduced due to the long working time of the phase change device is avoided.

[0209] In the above embodiment, the control method further includes: when the temperature detected by the first temperature detection device is less than the first threshold value, calculating a second discontinuous time T5 of water outlet of the liquid treatment device within an eleventh preset time length, and when T5 is greater than or equal to a second target time length, controlling the inlet of the flow distribution control device to communicate with the second flow distribution branch to perform cooling by the phase change device, and when T5 is less than the second target time length, performing heat dissipation on the phase change device.

[0210] In the embodiment, when the temperature detected by the first temperature detection device is less than or equal to the first threshold value, if the number of times that the discontinuous time of the water outlet is less than the target time length is too large at this time, it is predicted that the phase change material in the phase change device is reused for a relatively short time. At this time, the use of the phase change device is reduced, and the power can be distributed to the water-cooled heat exchanger. On the one hand, the cooling effect is ensured, and on the other hand, the reuse of the phase change material is facilitated.

[0211] In the above embodiment, the control method further includes: when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, calculating a third discontinuous time T6 of water outlet within a twelfth preset time length is less than or equal to a third target time length N5, and when N5 is greater than a third threshold value, controlling the inlet of the flow distribution control device to communicate with the first flow distribution branch, or controlling the heat dissipation device to perform heat dissipation on the phase change device.

[0212] In the embodiment, when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, heat exchange is performed by the phase change device, and if the number of times that the discontinuous time of the water outlet is less than the target time length is too large at this time, it is predicted that the phase change material in the phase change device is reused for a relatively short time. At this time, the use of the phase change device is reduced, and the power can be distributed to the water-cooled heat exchanger. On the one hand, the cooling effect is ensured, and on the other hand, the reuse of the phase change material is facilitated.

[0213] In the above embodiment, the control method further includes: when the temperature detected by the first temperature detection device is greater than or equal to the first threshold value, calculating a fourth discontinuous time T7 of water outlet within a thirteenth preset time length is less than or equal to a fourth target time length N6, and when N6 is greater than a fourth threshold value, controlling the inlet of the flow distribution control device to communicate with the first flow distribution branch, or controlling the heat dissipation device to perform heat dissipation on the phase change device.

[0214] In the embodiment, the discontinuous length of water is judged, so that the performance utilization of the phase change device is predicted. When the discontinuous length is long, the performance of the phase change device can be used to the maximum, the use efficiency of the phase change device is improved, and the cooling effect is improved. When the discontinuous length is short, the reusability of the phase change material in the phase change device is poor, the heat dissipation device is started to dissipate heat for the phase change device, so that the use efficiency of the phase change device is improved.

[0215] In the description of the present specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0216] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0217] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid processing device, characterized in that, include: A heater is used to heat the liquid flowing through it; A water-cooled heat exchanger includes a first water path, a second water path, and a heat exchange section. The heat exchange section is disposed between the first water path and the second water path. The first water path and the second water path exchange heat through the heat exchange section. The second water path is connected to the outlet of the heater. Liquid supply components; A parameter monitoring device is used to monitor the parameters of a liquid processing device. The parameter monitoring device includes a first temperature detection device, which is set corresponding to the outlet of the liquid supply component and / or the inlet of the first water path, for detecting the liquid temperature in the liquid supply component and / or the liquid temperature at the inlet of the first water path. A diversion control device includes a diversion control device inlet and a first diversion branch and a second diversion branch that can be connected to and disconnected from the diversion control device inlet. The diversion control device inlet is connected to the outlet of the second waterway. The diversion control device is connected to the parameter monitoring device and is used to control the connection and disconnection between the diversion control device inlet and the first diversion branch and the second diversion branch according to the parameters of the parameter monitoring device. A phase change device, which is connected to a second branch and is capable of heat exchange treatment of the liquid flowing out of the second branch; When the temperature detected by the first temperature detection device is greater than or equal to the first threshold, the inlet of the diversion control device is connected to the second diversion branch to cool down through the phase change device. The parameter monitoring device includes: a second temperature detection device, a duration detection device, a counting device, and a flow rate detection device; The diversion control device is specifically used to control the connection and disconnection between the inlet of the diversion control device and the first diversion branch and the second diversion branch according to the parameters monitored by at least one of the second temperature detection device, the duration detection device, the counting device, and the flow detection device when the temperature detected by the first temperature detection device is less than the first threshold. The control method further includes: when the temperature detected by the first temperature detection device is less than the first threshold, calculating the number N1 times the inlet temperature of the heater is greater than or equal to the second threshold within a first preset time period; when the number N1 is greater than the first preset number, controlling the inlet of the shunt control device to connect with the second shunt branch to cool down through the phase change device; or calculating the number N2 consecutive times the inlet temperature of the heater is greater than or equal to the second threshold within a second preset time period; when the number N2 consecutive times is greater than the second preset number, controlling the inlet of the shunt control device to connect with the second shunt branch to cool down through the phase change device.

2. The liquid processing apparatus according to claim 1, characterized in that, The parameter monitoring device also includes: The second temperature detection device is used to detect the liquid temperature at the outlet of the second water path, and / or the liquid temperature at the inlet of the diversion control device, and / or the inlet temperature of the heater. A duration detection device is used to detect the continuous working duration of the water-cooled heat exchanger and / or the continuous working duration of the phase change device, and / or to detect the intermittent duration T3 of the water discharged from the liquid treatment device within a first preset duration. The counting device is used to calculate the number of times N1 the inlet temperature of the heater is greater than or equal to a second threshold within a first preset time period; the number of consecutive times N2 the inlet temperature of the heater is greater than or equal to the second threshold within a second preset time period; the number of times N3 the liquid temperature at the outlet of the second water path and / or the liquid temperature at the inlet of the diversion control device is greater than or equal to a third threshold within a third preset time period; the number of consecutive times N4 the liquid temperature at the outlet of the second water path and / or the liquid temperature at the inlet of the diversion control device is greater than or equal to the third threshold within a fourth preset time period; the number of times N5 the third intermittent time T6 of the liquid treatment device is less than or equal to a third target time within a twelfth preset time period; and / or the sum of the number of consecutive times N6 the fourth intermittent time T7 of the liquid treatment device is less than or equal to a fourth target time within a thirteenth preset time period. A flow detection device is used to detect the output water volume of the liquid treatment device.

3. The liquid processing apparatus according to claim 1, characterized in that, The outlet of the first water passage is connected to the inlet of the heater. The liquid flowing through the first water passage enters the heater, is heated, and then enters the second water passage.

4. The liquid processing apparatus according to claim 1, characterized in that, The phase change device further includes: case; A phase change channel is disposed inside the housing or around the housing and connected to the outlet of the second water channel; A phase change material is disposed inside the housing, which is capable of exchanging heat with the liquid in the phase change channel during phase change; The phase change channel and the second water passage are an integral structure, or the phase change channel and the second water passage are detachably connected; and / or The phase change channel is detachably connected to the housing, or the phase change channel is assembled with the housing into an integral structure.

5. The liquid processing apparatus according to claim 1, characterized in that, The liquid supply assembly includes: Liquid supply tank; A liquid supply channel, the inlet of which is connected to the outlet of the liquid supply tank; The outlet of the liquid supply channel is connected to the inlet of the heater and / or the first water path; The temperature detection device is installed on the liquid supply tank or on the liquid supply channel.

6. The liquid handling apparatus according to claim 1, characterized in that, Also includes: A boiling water channel is provided, and the outlet of the heater is connected in parallel with the boiling water channel and the second water path.

7. The liquid handling apparatus according to claim 6, characterized in that, Also includes: A storage tank is connected to at least one of the outlet of the boiling water channel, the outlet of the first diversion branch, and the outlet of the phase change device to collect the liquid output from the outlet of the boiling water channel and / or the outlet of the first diversion branch and / or the outlet of the phase change device.

8. The liquid handling apparatus according to claim 7, characterized in that, Also includes: The water outlet assembly is connected to the outlet of the liquid storage tank.

9. The liquid handling apparatus according to any one of claims 1 to 8, characterized in that, The first water passage and the second water passage are metal pipes; and / or Both the first water passage and the second water passage include a metal part and a non-metal part. The first water passage and the second water passage exchange heat through the metal part and the heat exchange part. The part of the first water passage and the second water passage that does not contact the heat exchange part is the non-metal part.

10. The liquid handling apparatus according to any one of claims 1 to 8, characterized in that, Also includes: A heat dissipation device is provided corresponding to the phase change device and is used to dissipate heat from the phase change device.

11. A control method for a liquid processing apparatus, characterized in that, For a liquid handling apparatus as described in any one of claims 1 to 10, the control method comprises: The temperature detected by the first temperature detection device is obtained. When the temperature detected by the first temperature detection device is greater than or equal to the first threshold, the inlet of the shunt control device is connected to the second shunt branch to cool down through the phase change device.

12. The control method for the liquid handling apparatus according to claim 11, characterized in that, The first threshold is greater than or equal to 30°C and less than or equal to 37°C.

13. The control method for the liquid handling apparatus according to claim 11, characterized in that, Also includes: When the temperature detected by the first temperature detection device is less than a first threshold, the inlet temperature of the heater is obtained; when the inlet temperature of the heater is greater than or equal to a second threshold, the inlet of the shunt control device is connected to the second shunt branch to cool the heater through the phase change device; or Within a first preset time period, the number of times N1 the inlet temperature of the heater is greater than or equal to a second threshold is calculated. When the number of times N1 is greater than the first preset number, the inlet of the shunt control device is connected to the second shunt branch to cool down through the phase change device. or Within a second preset time period, the number of consecutive times N2 during which the inlet temperature of the heater is greater than or equal to the second threshold is calculated. When the number of times N2 is greater than the second preset number, the inlet of the shunt control device is connected to the second shunt branch to cool down the heater through the phase change device.

14. The control method for the liquid handling apparatus according to claim 11, characterized in that, Also includes: When the temperature detected by the first temperature detection device is lower than the first threshold, the liquid temperature at the outlet of the second water path and / or the liquid temperature at the inlet of the diversion control device are obtained. When the liquid temperature at the outlet of the second water path and / or the liquid temperature at the inlet of the diversion control device are greater than or equal to the third threshold, the inlet of the diversion control device is connected to the second diversion branch to cool down the liquid through the phase change device. or Calculate the number of times N3 during which the liquid temperature at the outlet of the second water path and / or the liquid temperature at the inlet of the diversion control device are greater than or equal to a third threshold. When the number of times N3 is greater than the third preset number, control the inlet of the diversion control device to connect with the second diversion branch so as to cool down through the phase change device. or Within a fourth preset time period, calculate the number of consecutive times N4 during which the liquid temperature at the outlet of the second water path and / or the liquid temperature at the inlet of the diversion control device are greater than or equal to the third threshold. When the number of times N4 is greater than the fourth preset number, control the inlet of the diversion control device to connect with the second diversion branch so as to cool down through the phase change device.

15. The control method for the liquid handling apparatus according to claim 11, characterized in that, Also includes: When the temperature detected by the first temperature detection device is less than the first threshold, the continuous working time T1 of the water-cooled heat exchanger is obtained. When T1 is greater than or equal to the fifth preset time, the inlet of the diversion control device is connected to the second diversion branch to cool down through the phase change device. When T1 is less than the fifth preset time, the inlet of the diversion control device is connected to the first diversion branch.

16. The control method for the liquid handling apparatus according to claim 11, characterized in that, Also includes: When the temperature detected by the first temperature detection device is greater than or equal to the first threshold, the continuous working time T2 of the phase change device is obtained, and when T2 is greater than or equal to the sixth preset time, the phase change device is cooled. When the temperature detected by the first temperature detection device is less than the first threshold, the continuous working time T3 of the phase change device is obtained. When T3 is greater than or equal to the seventh preset time, the phase change device is cooled, or the inlet of the shunt control device is connected to the first shunt branch.

17. The control method for the liquid handling apparatus according to claim 11, characterized in that, Also includes: When the temperature detected by the first temperature detection device is less than the first threshold, the water output A1 of the liquid treatment device within the eighth preset time period is obtained. When the water output A1 is greater than or equal to the first preset water output, the inlet of the diversion control device is connected to the second diversion branch to cool the phase change device. When the outflow A1 is less than the preset flow rate, the inlet of the diversion control device is connected to the first diversion branch. When the temperature detected by the first temperature detection device is greater than or equal to the first threshold, the water output A2 of the liquid treatment device within a ninth preset time period is obtained, and when the water output A2 is greater than or equal to the second preset water volume, the phase change device is cooled.

18. The control method for the liquid handling apparatus according to claim 11, characterized in that, Also includes: When the temperature detected by the first temperature detection device is greater than or equal to the first threshold, the first intermittent duration T4 of the liquid treatment device effluent water within the tenth preset duration is calculated. When T4 is less than or equal to the first target duration, the phase change device is cooled. When the temperature detected by the first temperature detection device is less than the first threshold, the second intermittent duration T5 of the liquid treatment device in the eleventh preset duration is calculated. When T5 is greater than or equal to the second target duration, the inlet of the diversion control device is connected to the second diversion branch to cool down through the phase change device. When T5 is less than the second target duration, the phase change device is cooled down. or Calculate the number of times N5 during which the third intermittent duration T6 of water effluent within the twelfth preset duration is less than or equal to the third target duration. When N5 is greater than the third threshold, control the inlet of the diversion control device to connect with the first diversion branch, or control the heat dissipation device to dissipate heat from the phase change device; or The sum N6 of the number of consecutive times that the fourth intermittent duration T7 of the liquid treatment device is less than or equal to the fourth target duration within the thirteenth preset duration is calculated. When N6 is greater than the fourth threshold, the inlet of the diversion control device is connected to the first diversion branch, or the heat dissipation device is controlled to dissipate heat from the phase change device.

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