Cooled Boiled Water Supply System, Drinking Water Equipment and Control Method of Cooled Boiled Water Supply System

Abstract

The present application relates to a cooled boiled water supply system, a drinking water device and a control method for the cooled boiled water supply system. The cooled boiled water supply system includes a water supply device, a heating device, a heat exchange device and a control device. The water supply device is used to provide a water source to the heating device. The heating device is used to heat the water until it reaches a set heating temperature and then transport it to the heat exchange device. The heat exchange device is used to perform heat exchange on the received water to cool it down. The control device is used to adjust the parameters of the water supply device and the heating device according to the set target outlet water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature. Users can change the set target outlet water temperature according to actual needs, so that the heat exchange device outputs boiled water in different temperature ranges for use, which can meet the users' drinking habits of cooled boiled water and facilitate the users to use.

Description

Technical Field

[0001] The present application relates to the technical field of water-using equipment, and particularly to a cooled boiled water supply system, a drinking water equipment and a control method for the cooled boiled water supply system. Background Art

[0002] Chinese people have the habit of boiling water and then naturally cooling it to the preferred temperature before drinking. This kind of water belongs to the category of cooled boiled water in academia. Different people have different preferred temperatures, so it has the characteristic of multiple temperatures. However, cooling to the preferred temperature requires a waiting process and timely water intake cannot be achieved.

[0003] Among the current types of water purifiers, the models that can instantly provide purified water at different temperature ranges are mainly tabletop water purifiers, which are popular among consumers in the market. Traditional tabletop water purifiers can instantly provide water at different temperatures, but the water at different temperatures is heated from normal temperature to the required temperature. Moreover, there is currently no type of water purifier on the market that can meet the needs of Chinese people to drink cooled boiled water. How to provide a cooled boiled water supply system that can meet the drinking habits of users and is convenient for users to use is an urgent problem to be solved. Summary of the Invention

[0004] Based on this, in view of the problem that the traditional tabletop water purifier cannot meet the drinking habits of users for cooled boiled water, it is necessary to provide a cooled boiled water supply system, a drinking water equipment and a control method for the cooled boiled water supply system, which can meet the drinking habits of users for cooled boiled water and facilitate the use of users.

[0005] A cooled boiled water supply system includes a water supply device, a heating device, a heat exchange device and a control device;

[0006] The water supply device is used to provide water source to the heating device, the heating device is used to heat water to a set heating temperature and then transport it to the heat exchange device, and the heat exchange device is used to exchange heat and cool the received water; the control device is used to adjust the parameters of the water supply device and the heating device according to the set target outlet water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature.

[0007] In one embodiment, the control device is further used to adjust the parameters of the water supply device and the heating device according to the set target outlet water temperature after judging that the water intake start condition is met according to the collected waterway data.

[0008] In one embodiment, the water supply device includes a water purification pump, the water purification pump is connected to the heating device, and the control device is connected to the water purification pump.

[0009] In one embodiment, the water supply device further includes a raw water pump and a purification component. The raw water pump is connected to the purification component, the purification component is connected to the purified water pump, and the control device is connected to the raw water pump.

[0010] In one embodiment, the water supply device further includes a raw water tank and a two-way control valve. The raw water pump is connected to the raw water tank and is connected to the purification component and the heat exchange device through the two-way control valve. The control device is connected to the two-way control valve. When cool boiled water is not being prepared, the control device adjusts the two-way control valve to deliver the raw water in the raw water tank to the purification component. When cool boiled water is being prepared, the control device adjusts the two-way control valve to deliver the raw water in the raw water tank to the heat exchange device.

[0011] In one embodiment, the water supply device further includes a purified water tank, a waste water tank, and a waste water control valve. The purified water tank is connected to the purified water pump and the purification component. The waste water control valve is connected to the waste water tank and the purification component, and the control device is connected to the waste water control valve.

[0012] In one embodiment, the cool boiled water supply system further includes a parameter acquisition device connected to the control device. The parameter acquisition device collects water path data and sends it to the control device. The control device adjusts the parameters of the water supply device and the heating device according to the set target outlet temperature and the water path data.

[0013] In one embodiment, the parameter acquisition device includes a purified water level sensor, a purified water temperature sensor, a raw water level sensor, and a raw water temperature sensor connected to the control device.

[0014] The purified water level sensor is disposed in the purified water tank for detecting the purified water level and sending it to the control device.

[0015] The purified water temperature sensor is disposed in the purified water tank for detecting the purified water temperature and sending it to the control device.

[0016] The raw water level sensor is disposed in the raw water tank for detecting the raw water level and sending it to the control device.

[0017] The raw water temperature sensor is disposed in the raw water tank for detecting the raw water temperature and sending it to the control device.

[0018] The control device is configured to adjust the parameters of the water supply device and the heating device according to the target outlet temperature and the purified water temperature when the purified water level, the raw water level, and the raw water temperature meet the preset water intake start conditions.

[0019] A drinking water device includes the above-mentioned cool boiled water supply system.

[0020] A method for controlling a cooled boiled water supply system, comprising the following steps:

[0021] According to the set target outlet water temperature, adjust the parameters of the water supply device and the heating device so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature.

[0022] In one embodiment, the step of adjusting the parameters of the water supply device and the heating device according to the set target outlet water temperature so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature includes:

[0023] When it is determined according to the collected waterway data that the water intake start condition is met, adjust the parameters of the water supply device and the heating device according to the target outlet water temperature and the purified water temperature so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature.

[0024] In one embodiment, the water intake start condition includes that the raw water level is higher than the preset exchange liquid level threshold, the raw water temperature is lower than the exchange water temperature threshold, and the purified water level is higher than the preset water production liquid level threshold.

[0025] In one embodiment, the step of adjusting the parameters of the water supply device and the heating device according to the target outlet water temperature and the purified water temperature so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature includes:

[0026] According to the temperature difference between the heating temperature and the purified water temperature, adjust the output flow rate of the purified water pump and the power of the heating device so that the heating device heats the purified water to the heating temperature;

[0027] According to the output flow rate of the purified water pump and the temperature difference between the heating temperature and the target outlet water temperature, adjust the output flow rate of the raw water pump so that the raw water and the purified water in the heat exchange device perform convective heat exchange and output boiled water with a temperature matching the target outlet water temperature.

[0028] In one embodiment, the step of adjusting the output flow rate of the raw water pump according to the output flow rate of the purified water pump and the temperature difference between the heating temperature and the target outlet water temperature so that the raw water and the purified water in the heat exchange device perform convective heat exchange and output boiled water with a temperature matching the target outlet water temperature includes:

[0029] According to the output flow rate of the purified water pump and the temperature difference between the heating temperature and the target outlet water temperature, adjust the output flow rate of the raw water pump so that the raw water and the purified water in the heat exchange device perform convective heat exchange;

[0030] Adjust the output flow rate of the raw water pump according to the ratio of the monitored actual outlet water temperature to the target outlet water temperature, so that the heat exchange device outputs cooled boiled water that matches the target outlet water temperature.

[0031] In one embodiment, after adjusting the parameters of the water supply device and the heating device according to the set target outlet water temperature so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature, it further includes:

[0032] Receive the updated target outlet water temperature, and adjust the parameters of the heating device according to the water temperature in the water supply device and the current heating parameters of the heating device, so that the temperature of the cooled boiled water output by the heat exchange device matches the updated target outlet water temperature.

[0033] In the above-mentioned cooled boiled water supply system, drinking water equipment and control method of the cooled boiled water supply system, the water supply device provides water source to the heating device, the heating device heats the water to the set heating temperature and then transports it to the heat exchange device, and the heat exchange device exchanges heat to cool the received water. The control device adjusts the parameters of the water supply device and the heating device according to the set target outlet water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature. Users can change the set target outlet water temperature according to actual needs, so that the heat exchange device outputs boiled water in different temperature ranges for use, which can meet the user's habit of drinking cooled boiled water and is convenient for users to use. Description of the Drawings

[0034] Figure 1 It is a structural block diagram of a cooled boiled water supply system in one embodiment;

[0035] Figure 2 It is a structural schematic diagram of a cooled boiled water supply system in one embodiment;

[0036] Figure 3 It is a structural schematic diagram of a cooled boiled water supply system in another embodiment;

[0037] Figure 4 It is a logical control method framework diagram of a cooled boiled water supply system in one embodiment;

[0038] Figure 5 It is a schematic diagram of the heat exchange device of a cooled boiled water supply system in one embodiment. Detailed Description of the Embodiment

[0039] In order to make the purpose, technical solution and advantages of the present application clearer, the following further describes the present application in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0041] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection", if there is a transfer of electrical signals or data between the connected circuits, modules, units, etc., should be understood as "electrical connection", "communication connection", etc.

[0042] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprise / include" or "have" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof. At the same time, the terms used in this specification include any and all combinations of the related listed items.

[0043] In one embodiment, a cooled boiled water supply system is provided, which is applicable to devices such as water purifiers, water dispensers, etc. As Figure 1 shown, the cooled boiled water supply system includes a water supply device 100, a heating device 200, a heat exchange device 300 and a control device 400. Among them, the heating device 200 is connected to the water supply device 100 and the heat exchange device 300, and the control device 400 is connected to the water supply device 100, the heating device 200 and the heat exchange device 300. The water supply device 100 is used to provide a water source to the heating device 200, the heating device 200 is used to heat the water to a set heating temperature and then transport it to the heat exchange device 300, and the heat exchange device 300 is used to exchange heat and cool the received water; the control device 400 is used to adjust the parameters of the water supply device 100 and the heating device 200 according to the set target outlet water temperature, so that the temperature of the cooled boiled water output by the heat exchange device 300 matches the target outlet water temperature. Among them, the heating device 200 can heat the water to above 90°C to boil the water. For ease of understanding, the following will take the cooled boiled water supply system applied to a water purifier as an example for explanation.

[0044] Specifically, the water supply device 100 accesses raw water, provides normal-temperature purified water required for drinking to the heating device 200, and can also provide a coolant to the heat exchange device 300 for heat exchange and cooling. Among them, according to the different water qualities of the raw water, the specific structure of the water supply device 100 will also be correspondingly different. When the raw water is of drinking water quality, the water supply device 100 can be a non-purification system, and only through a conveying device, such as a pressure stabilizing pump, the normal-temperature purified water is conveyed from the water outlet end of the water supply device 100 to the water inlet end of the heating device 200, or the heat exchange low-temperature water is conveyed to the heat exchange water inlet of the heat exchange device 300; when the raw water quality is non-drinking water quality, the water supply device 100 can have a corresponding purification system to purify the raw water quality to meet the drinking standard, and the normal-temperature effluent of the purification system is input into the water inlet end of the heating device 200 through a conveying device or used as the heat exchange low-temperature water source of the heat exchange device 300.

[0045] Specifically, the heating device 200 can adopt a heating element with adjustable power. The heating element can be a PTC (Positive Temperature Coefficient) heating element, a rare earth thick film heating element, a metal heating tube, etc. The purified water in contact with the heating element is heated to boiling by the heating. The heating power of the heating element is controlled and adjusted by the control device 400 according to the detected parameters. The boiling purified water is input from the water outlet end of the heating element into the purified water inlet end of the heat exchange device 300.

[0046] Specifically, the heat exchange device 300 can adopt a casing heat exchange structure device such as a heat exchanger. The purified water inlet end of the heat exchange device 300 is connected to the heating device 200, and the purified water outlet end of the heat exchange device 300 can be connected to the water outlet nozzle 500. The heat exchange water inlet and the heat exchange water outlet of the heat exchange device 300 are connected to the water supply device 100. The heat exchange device 300 uses the cooling liquid provided by the water supply device 100 to exchange heat and cool the purified water after being heated and boiled by the heating device 200, and the cooled boiled water flows out from the water outlet nozzle 500. Among them, in combination with the heating element and the heat exchanger, the water is boiled and then immediately cooled to achieve instantaneous preparation of boiled water.

[0047] The control device 400 can adopt a control main board, on which devices such as a CPU (Central Processing Unit) and an MCU (Micro Control Unit) can be set. Users can set the target outlet water temperature through an interaction device according to their own needs. The interaction device sends the target outlet water temperature to the control device 400 for storage. The interaction device can be a key circuit or a touch screen, etc. Users can also send the target outlet water temperature to the control device 400 for storage through terminal devices such as mobile phones and remote controls. After setting the target outlet water temperature, users can also send a signal for fetching cooled boiled water to the control device 400 through the terminal device. After receiving the signal for fetching cooled boiled water, the control device 400 starts to perform the operation of preparing cooled boiled water. Specifically, sensors can be set in the water supply device 100 and the heating device 200 to detect parameters such as water level and water temperature. The control device 400 adjusts the output water flow of the water supply device 100 and the heating power of the heating device 200 according to the target outlet water temperature and in combination with the collected water path data, so that the heating device 200 heats the purified water, and the purified water heated to the heating temperature is transported to the heat exchange device 300. Then, the heat exchange device 300 cools the boiled purified water through heat exchange to obtain cooled boiled water with a temperature matching the target outlet water temperature, and finally flows out from the water outlet 500 for users to use.

[0048] Among them, the value of the heating temperature is not unique and can be set according to actual needs. The control device 400 can also pre-store the corresponding relationship between the purified water temperature, the target outlet water temperature and the heating temperature. After the purified water temperature and the target outlet water temperature are determined, the control device 400 can directly determine the heating temperature. The temperature of the cooled boiled water matches the target outlet water temperature, which can be that the temperature of the cooled boiled water is the same as the target outlet water temperature, or the difference between the temperature of the cooled boiled water and the target outlet water temperature is within the allowable error range. In addition, users can also change the target outlet water temperature, and the control device 400 adjusts the heating parameters in real time according to the updated target outlet water temperature, so as to realize the instantaneous continuous preparation of boiled water in multiple temperature sections.

[0049] Further, after receiving the signal for fetching cooled boiled water, the control device 400 can also analyze whether the collected water path data meets the preset water fetching start conditions. After determining that the collected water path data meets the water fetching start conditions, the control device 400 performs the operation of preparing cooled boiled water. Taking the water purifier as an example, after analyzing that the collected water path data meets the water fetching start conditions in combination with the purified water level, raw water level, and raw water temperature, the control device 400 then performs the operation of preparing cooled boiled water, avoiding the failure of preparing cooled boiled water or the inability to continuously prepare cooled boiled water at multiple temperature segments due to insufficient purified water volume, insufficient raw water volume, too high temperature, etc. In addition, when the cooled boiled water supply system is applied to other devices such as water purifiers and water dispensers, the control device 400 can also only detect the water temperature or water flow rate. When the water temperature or water flow rate meets the corresponding threshold requirements, it can be considered that the water fetching start conditions are met.

[0050] In the above cooled boiled water supply system, the water supply device 100 provides water source to the heating device 200. The heating device 200 heats the water until it reaches the set heating temperature and then transports it to the heat exchange device 300. The heat exchange device 300 performs heat exchange and cooling on the received water. The control device 400 adjusts the parameters of the water supply device 100 and the heating device 200 according to the set target outlet water temperature, so that the temperature of the cooled boiled water output by the heat exchange device 300 matches the target outlet water temperature. The user can change the set target outlet water temperature according to actual needs, so that the heat exchange device 300 outputs boiled water at different temperature segments for use, which can meet the user's drinking habit of cooled boiled water and is convenient for the user to use.

[0051] In one embodiment, as Figure 2 shown, the water supply device 100 includes a purified water pump 102. The purified water pump 102 is connected to the heating device 200, and the control device 400 is connected to the purified water pump 102. When the cooled boiled water supply system is applied to a water purifier, the water supply device 100 may further include a purified water tank 101. The purified water tank 101 is connected to the purified water pump 102. Among them, the purified water tank 101 is used to store purified water, and the control device 400 controls the output flow rate of the purified water pump 102, thereby controlling the purified water flow rate transported from the purified water tank 101 to the heating device 200.

[0052] Further, in one embodiment, the water supply device 100 further includes a raw water pump 104 and a purification component 106. The raw water pump 104 is connected to the purification component 106, the purification component 106 is connected to the purified water pump 102, and the control device 400 is connected to the raw water pump 104. The raw water pump 104 accesses the raw water through a pipeline and transports it to the purification component 106 for filtration and purification. The obtained purified water is transported to the heating device 200 by the purified water pump 102.

[0053] In one embodiment, as Figure 2As shown, the water supply device 100 further includes a raw water tank 103 and a two-way control valve 105. The raw water pump 104 is connected to the raw water tank 103 and is connected to the purification component 106 and the heat exchange device 300 through the two-way control valve 105. The control device 400 is connected to the two-way control valve 105. When the water supply device 100 includes a purified water tank 101, the purified water tank 101 is connected to the purified water pump 102 and the purification component 106. Among them, the raw water tank 103 is used to store raw water, and the two-way control valve 105 can adopt a two-way solenoid valve. The water outlet of the raw water tank 103 is connected to the raw water pump 104, the two-way control valve 105 is connected to the heat exchange water inlet of the heat exchange device 300, and the heat exchange water outlet of the heat exchange device 300 is connected to the water return port of the raw water tank 103.

[0054] When the cooled boiled water supply system does not prepare cooled boiled water, the control device 400 adjusts the two-way control valve 105 to make the raw water output from the raw water tank 103 pass through the purification component 106 for filtration and purification, and then obtain purified water and transport it to the purified water tank 101 for storage. When the cooled boiled water supply system needs to prepare cooled boiled water, the control device 400 adjusts the two-way control valve 105 to make the raw water output from the raw water tank 103 reach the heat exchange device 300 for heat exchange, and the raw water after heat exchange returns to the raw water tank 103.

[0055] In another embodiment, the water supply device 100 may not include the two-way control valve 105. As Figure 3 shown, the raw water pump 104 is directly connected to the purification component 106, that is, the heat exchange device 300 is not provided with coolant through the water supply device 100. Correspondingly, the heat exchange device 300 may include a two-way control valve 310, a circulation pipeline and a water-vapor separation device 320. The two-way control valve 310 is connected to the heating device 200 and the water-vapor separation device 320, and the water-vapor separation device 320 is connected to the water outlet. The circulation pipeline is arranged in the purified water tank 101 and is respectively connected to the two-way control valve 310 and the water-vapor separation device 320 at both ends. The purified water heated to boiling by the heating device 200 enters the circulation pipeline in the purified water tank 101 through the two-way control valve 310, and heat exchange and cooling are carried out using the purified water in the purified water tank 101. The cooled boiled water is transported to the water outlet through the water-vapor separation device 320.

[0056] The specific structure of the purification component 106 is not unique and can be in the form of a single or combined pre-treatment module and deep treatment module. Among them, the pre-treatment realizes the preliminary filtration of water quality to remove pollutants such as sediment, rust, and residual chlorine, and can be in the form of a combination or composite of a primary filter element and an activated carbon filter element. The primary filter element can be a PP cotton filter element or an ultrafiltration filter element, and the activated carbon filter element can be a granular activated carbon, carbon fiber, or carbon rod filter element. The deep treatment module realizes the deep filtration of water quality to remove toxic and harmful substances such as heavy metals and microorganisms, and can be a combination of one or more of ultrafiltration, nanofiltration, or reverse osmosis filtration modules. Specifically, in one embodiment, the purification component 106 is a purification filter element. Further, the purification filter element is a multi-layer composite filter element with pre-treatment purification and deep purification functions, and the purified water meets the drinking standard.

[0057] In one embodiment, with continued reference to Figure 2 , the water supply device 100 further includes a purified water tank 101, a waste water tank 107, and a waste water control valve 108. The purified water tank 101 is connected to the purified water pump 102 and the purification component 106; the waste water control valve 108 is connected to the waste water tank 107 and the purification component 106, and the control device 400 is connected to the waste water control valve 108. Among them, the waste water control valve 108 can be a waste water solenoid valve. Specifically, the waste water control valve has two states: operation and flushing. By changing the state of the waste water control valve through the control device 400, the water flow channel can be adjusted. In the operation mode, the raw water is filtered by the purification filter element to separate the purified water and the waste water, which enter the purified water tank 101 and the waste water tank 107 respectively. In the flushing mode, after the purification filter element is flushed with the raw water, the remaining water returns to the waste water tank 107. In addition, the waste water tank 107 and the raw water tank 103 can be two independent tanks or can be integrally formed, for example, a raw water chamber and a waste water chamber are provided in one tank to store the raw water and the waste water respectively.

[0058] In one embodiment, the cooled boiled water supply system further includes a parameter acquisition device connected to the control device 400. The parameter acquisition device acquires the water path data and sends it to the control device 400. The control device 400 adjusts the parameters of the water supply device 100 and the heating device 200 according to the set target outlet water temperature and the water path data.

[0059] The specific structure of the parameter acquisition device is not unique. In one embodiment, as Figure 2As shown in the figure, the parameter acquisition device includes a purified water level sensor, a purified water temperature sensor, a raw water level sensor, and a raw water temperature sensor connected to the control device 400. Among them, the purified water level sensor is arranged in the purified water tank 101 and is used to detect the purified water level and send it to the control device 400; the purified water temperature sensor is arranged in the purified water tank 101 and is used to detect the purified water temperature and send it to the control device 400; the raw water level sensor is arranged in the raw water tank 103 and is used to detect the raw water level and send it to the control device 400; the raw water temperature sensor is arranged in the raw water tank 103 and is used to detect the raw water temperature and send it to the control device 400; the control device 400 is used to adjust the parameters of the water supply device 100 and the heating device 200 according to the target outlet temperature and the purified water temperature when the purified water level, the raw water level, and the raw water temperature meet the preset water intake start conditions.

[0060] The specific content of the water intake start conditions is not unique. In this embodiment, the water intake start conditions include that the raw water level is higher than the preset exchange liquid level threshold, the raw water temperature is lower than the exchange water temperature threshold, and the purified water level is higher than the preset water production liquid level threshold. Among them, the exchange water temperature threshold is determined according to the allowable maximum exchange temperature. When the purified water level, the raw water level, and the raw water temperature meet the preset water intake start conditions, the control device 400 adjusts the parameters of the water supply device 100 and the heating device 200 according to the target outlet temperature and the purified water temperature, so as to avoid the failure of preparing cool boiled water or the inability to continuously prepare cool boiled water with multiple temperature segments.

[0061] Furthermore, the control device 400 adjusts the output flow rate of the purified water pump 102 and the power of the heating device 200 according to the temperature difference between the heating temperature and the purified water temperature, so that the heating device 200 heats the purified water to the heating temperature; according to the output flow rate of the purified water pump 102 and the temperature difference between the heating temperature and the target outlet temperature, the control device 400 adjusts the output flow rate of the raw water pump 104, so that the raw water and the purified water in the heat exchange device 300 perform convective heat exchange to output cool boiled water with a temperature matching the target outlet temperature. Among them, the raw water pump 104 is a fixed-frequency pump, and the control device 400 can control the output water flow rate of the raw water pump 104 by adjusting the duty cycle of the control signal.

[0062] In addition, the parameter acquisition device may further include a heating temperature sensor arranged at the outlet of the heating device 200 and connected to the control device 400. The heating temperature sensor detects the heating outlet temperature of the heating device 200 and sends it to the control device 400 to monitor the heating outlet temperature of the heating device 200. Furthermore, after the control device 400 adjusts the output flow rate of the purified water pump 102 and the power of the heating device 200 according to the temperature difference between the heating temperature and the purified water temperature, the control device 400 may also adjust the output flow rate of the purified water pump 102 and / or the power of the heating device 200 according to the difference between the heating outlet temperature and the heating temperature of the heating device 200, so as to make the purified water output by the heating device 200 reach the heating temperature.

[0063] In one embodiment, the parameter acquisition device may further include a water outlet temperature sensor connected to the control device 400. The water outlet temperature sensor detects the actual water outlet temperature of the heat exchange device 300 and sends it to the control device 400. The water outlet temperature sensor may be disposed at the water outlet of the heat exchange device 300 or may be disposed at the water outlet nozzle 500. Correspondingly, the control device 400 adjusts the output flow rate of the raw water pump 104 according to the output flow rate of the pure water pump 102 and the temperature difference between the heating temperature and the target water outlet temperature, so that after the raw water and the pure water in the heat exchange device 300 perform convective heat exchange, according to the ratio of the monitored actual water outlet temperature to the target water outlet temperature, the output flow rate of the raw water pump 104 is adjusted to make the heat exchange device 300 output cooled boiled water with a temperature matching the target water outlet temperature.

[0064] In this embodiment, the control device 400 adjusts the output flow rate of the raw water pump 104 according to the ratio of the monitored actual water outlet temperature to the target water outlet temperature, continuously updates and corrects the output flow rate of the raw water pump 104, and finally makes the heat exchange device 300 output cooled boiled water with a temperature matching the target water outlet temperature.

[0065] Specifically, the control device 400 may pre-store the corresponding relationship among the temperature difference between the heating temperature and the pure water temperature, the output flow rate of the pure water pump 102, and the power of the heating device 200. After calculating the temperature difference between the heating temperature and the pure water temperature, the output flow rate of the pure water pump 102 and the power of the heating device 200 can be directly determined. Similarly, the control device 400 may also pre-store the corresponding relationship among the output flow rate of the pure water pump, the temperature difference between the heating temperature and the target water outlet temperature, and the output flow rate of the raw water pump 104 at different raw water temperatures, determine the actual corresponding relationship to be selected according to the actual raw water temperature, and after calculating the output flow rate of the pure water pump, the temperature difference between the heating temperature and the target water outlet temperature, the output flow rate of the raw water pump 104 can be directly determined according to the selected corresponding relationship. Finally, the control device 400 finely adjusts and corrects the output flow rate of the raw water pump 104 according to the ratio of the monitored actual water outlet temperature to the target water outlet temperature, so as to make the heat exchange device 300 output cooled boiled water with a temperature matching the target water outlet temperature and improve the accuracy of the water production temperature control.

[0066] It should be noted that in other embodiments, the control device 400 can also adjust the heating power of the heating device 200 according to the actual water outlet temperature. For example, when the actual water outlet temperature is greater than the target water outlet temperature, the heating power of the heating device 200 is reduced; when the actual water outlet temperature is less than the target water outlet temperature, the heating power of the heating device 200 is increased. By adjusting the heating power of the heating device 200 according to the actual water outlet temperature, fine-tuning correction can also be achieved, so that the output temperature of the heat exchange device 300 matches the target water outlet temperature of cool boiled water.

[0067] In one embodiment, the control device 400 is further configured to receive an updated target water outlet temperature, and adjust the parameters of the heating device 200 according to the water temperature in the water supply device 100 and the current heating parameters of the heating device 200, so that the temperature of the cooled cool boiled water output by the heat exchange device 200 matches the updated target water outlet temperature.

[0068] Specifically, after the control device 400 adjusts the water outlet flow rate of the water supply device 100 and the heating power of the heating device 200 according to the previously set target water outlet temperature, the temperature of the cooled cool boiled water output by the heat exchange device 300 matches the set target water outlet temperature. When the user needs to change the target water outlet temperature, a new target water outlet temperature can be sent to the control device 400. Since the raw water temperature, purified water temperature in the cool boiled water supply system and the environment where the cool boiled water supply system is located have not changed, the control device 400 only needs to analyze the degree of data change before and after the change, and correspondingly adjust the current heating power of the heating device 200, so that the heat exchange device 300 outputs cool boiled water with a temperature matching the changed target water outlet temperature, simplifying the control operation and saving costs.

[0069] Correspondingly, the control device 400 can also adjust the parameters of the heating device 200 according to the purified water temperature in the water supply device 100 and the current heating parameters of the heating device 200 when the purified water level, raw water level and raw water temperature meet the preset water intake start conditions. After the user sends a new target water outlet temperature to the control device 400, the control device 400 can obtain a new heating temperature, and adjust the current heating parameters of the heating device 200 according to the ratio of the temperature difference between the new heating temperature and the purified water temperature to the temperature difference between the previous heating temperature and the purified water temperature, so that the heat exchange device 300 outputs cool boiled water with a temperature matching the updated target water outlet temperature.

[0070] In other embodiments, the control device 400 may also adjust the output flow rate of the raw water pump 104 according to the updated target outlet water temperature. For example, when the updated target outlet water temperature is higher than the original target outlet water temperature, the output flow rate of the raw water pump 104 is reduced; when the updated target outlet water temperature is lower than the original target outlet water temperature, the output flow rate of the raw water pump 104 is increased. By adjusting the output flow rate of the raw water pump 104 according to the updated target outlet water temperature, fine-tuning correction can also be achieved, so that the output temperature of the heat exchange device 300 matches the target outlet water temperature of the cooled boiled water.

[0071] It should be noted that according to the different application scenarios of the cooled boiled water supply system, the specific structure of the cooled boiled water supply system will also be different. For example, when the cooled boiled water supply system is applied to a water purifier, the water supply device 100 may not include the water purification tank 101, directly filter the connected water source, and transport the filtered purified water to the heating device 200. When the cooled boiled water supply system is applied to a water dispenser, the water bucket installed on the water dispenser can be directly used as the water supply device 100.

[0072] In one embodiment, a drinking device is also provided, including the above-mentioned cooled boiled water supply system. The drinking device can be a water purifier, a water dispenser or a water dispenser, etc.

[0073] In one embodiment, a method for controlling a cooled boiled water supply system is also provided, which can be implemented based on the above-mentioned cooled boiled water supply system, and includes the following steps: adjusting the parameters of the water supply device and the heating device according to the set target outlet water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature.

[0074] In one embodiment, adjusting the parameters of the water supply device and the heating device according to the set target outlet water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature, includes: when it is determined according to the collected waterway data that the water intake start condition is met, adjusting the parameters of the water supply device and the heating device according to the target outlet water temperature and the purified water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature.

[0075] In one embodiment, the water intake start condition includes that the raw water level is higher than the preset exchange liquid level threshold, the raw water temperature is lower than the exchange water temperature threshold, and the purified water level is higher than the preset water production liquid level threshold.

[0076] In one embodiment, adjusting the parameters of the water supply device and the heating device according to the target outlet water temperature and the purified water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature, includes:

[0077] Adjust the output flow rate of the purified water pump and the power of the heating device according to the temperature difference between the heating temperature and the temperature of the purified water, so that the heating device heats the purified water to the heating temperature; according to the output flow rate of the purified water pump and the temperature difference between the heating temperature and the target outlet water temperature, adjust the output flow rate of the raw water pump, so that the raw water and the purified water in the heat exchange device conduct convective heat exchange to output cool boiled water with a temperature matching the target outlet water temperature.

[0078] In one embodiment, according to the output flow rate of the purified water pump and the temperature difference between the heating temperature and the target outlet water temperature, adjust the output flow rate of the raw water pump, so that the raw water and the purified water in the heat exchange device conduct convective heat exchange to output cool boiled water with a temperature matching the target outlet water temperature, including:

[0079] According to the output flow rate of the purified water pump and the temperature difference between the heating temperature and the target outlet water temperature, adjust the output flow rate of the raw water pump, so that the raw water and the purified water in the heat exchange device conduct convective heat exchange; according to the ratio of the monitored actual outlet water temperature to the target outlet water temperature, adjust the output flow rate of the raw water pump, so that the heat exchange device outputs cool boiled water with a temperature matching the target outlet water temperature.

[0080] In addition, in other embodiments, it is also possible to adjust the heating power of the heating device according to the actual outlet water temperature. For example, when the actual outlet water temperature is greater than the target outlet water temperature, reduce the heating power of the heating device; when the actual outlet water temperature is less than the target outlet water temperature, increase the heating power of the heating device.

[0081] In one embodiment, after adjusting the parameters of the water supply device and the heating device according to the set target outlet water temperature so that the temperature of the cooled cool boiled water output by the heat exchange device matches the target outlet water temperature, it further includes:

[0082] Receive the updated target outlet water temperature, and adjust the parameters of the heating device according to the water temperature in the water supply device and the current heating parameters of the heating device, so that the temperature of the cooled cool boiled water output by the heat exchange device matches the updated target outlet water temperature.

[0083] In addition, in other embodiments, it is also possible to adjust the output flow rate of the raw water pump according to the updated target outlet water temperature. For example, when the updated target outlet water temperature is higher than the original target outlet water temperature, reduce the output flow rate of the raw water pump; when the updated target outlet water temperature is lower than the original target outlet water temperature, increase the output flow rate of the raw water pump.

[0084] It can be understood that for specific embodiments of the control method of the cool boiled water supply system, reference can be made to the embodiments in the above cool boiled water supply system, which will not be elaborated here.

[0085] In the above-mentioned method for controlling the cooled boiled water supply system, users can change the set target outlet water temperature according to actual needs, so that the heat exchange device outputs boiled water in different temperature ranges for use, which can meet the users' habits of drinking cooled boiled water and is convenient for users to use.

[0086] To better understand the above-mentioned cooled boiled water supply system and the method for controlling the cooled boiled water supply system, the following will be explained in detail with specific embodiments.

[0087] In the traditional adjustable-temperature tabletop water purifier system, it can instantaneously provide water at different temperatures. However, the water at different temperatures is heated from normal temperature to the required temperature without going through the steps of boiling and then cooling, which does not conform to the drinking habits of Chinese people. Through synchronous research on the series of water purifiers in the household scenario, there is currently no category of water purifier on the market that can meet the needs of Chinese people to drink cooled boiled water. When researching the cooled boiled water products on the market, there are bottled cooled boiled water for sale, and they are popular among consumers in the market. However, the types of their cooled boiled water are prepared in advance and then packaged in bottles for sale, and the freshness of the water quality is poor. Through the above analysis, if a water purification system that can instantaneously prepare cooled boiled water in multiple temperature ranges can be developed, it can meet the habits of Chinese people to drink cooled boiled water, solve the problem of waiting for conventional water intake at the same time, and compared with the bottled cooled boiled water on the market, the water quality is supplied instantaneously and is more fresh. Therefore, it has certain advantages both technically and in terms of application prospects.

[0088] Problems existing in existing products:

[0089] 1. The traditional tabletop water purifier can instantaneously provide warm water in different temperature ranges, but they are all instant heating types and do not go through the steps of boiling and then cooling, which does not conform to the drinking habits of Chinese people to drink cooled boiled water;

[0090] 2. The bottled cooled boiled water sold on the market is all prepared in advance and then packaged, and does not have freshness;

[0091] 3. Using a kettle to boil drinking water and then cooling it to the required temperature takes time during the waiting process and does not have instantaneity;

[0092] 4. Vertical water purifiers and pipeline machines generally only have two gears of normal temperature water and boiling water, and do not have warm water in multiple temperature ranges, and the convenience is insufficient.

[0093] In response to the above-mentioned problems, the present application provides a system that can instantaneously and continuously prepare boiled water in multiple temperature ranges. By creating a system with a heat exchange device and combining a logical control method to control the start and stop of different system components, the function of instantaneously providing cooled boiled water in different temperature ranges can be realized, which truly conforms to the drinking habits of Chinese people and completely solves the waiting problem of boiling and then naturally cooling. At the same time, considering that the water intake of multiple people is large, the water purification system in this technical solution has continuity in water intake, solving the waiting problem of multiple people for water intake.

[0094] The present application provides a multi-temperature-section fresh cool boiled water system including a water supply device, a heating device, and a heat exchange device with a liquid as the cooling medium. By combining logical methods to control the startup, shutdown, and operating parameters of different system components, it can achieve the functions of instant preparation and continuous large-scale supply of cool boiled water at multiple temperature sections, truly meeting the drinking habits of Chinese people. To achieve the corresponding functions, the technical solutions adopted are as follows:

[0095] 1. A cool boiled water system includes a water supply device, a heating device, and a heat exchange device with a liquid as the cooling medium. The water supply device includes a water supply system with a filter element for real-time purification of the water source and a water supply system without a filter element and without real-time purification. The principle of the heat exchange device is based on a casing - with normal temperature water as the cooling medium. Among them, the hot water flows inside the casing, and the normal temperature water flows outside the casing to achieve instant cooling.

[0096] 2. A logical control method for realizing instant preparation and continuous supply of cool boiled water at multiple temperature sections, specifically: Combining the temperature of the end water intake and the temperature of the cooling liquid, and controlling parameters such as the water supply flow of the water supply pump and the heating power of the heating element through a specific algorithm to achieve the supply of cool boiled water at the required temperature section.

[0097] Specifically, as Figure 1 shown, the desktop pure heat cool boiled water system includes a water supply device 100, a heating device 200, a heat exchange device 300, a control device 400, and related supporting structures. The water supply, heating, and heat exchange devices have one or more water inlet ends and water outlet ends. The water inlet end of the water supply device 100 is connected to the raw water source. The water supply device 100 has multiple water outlet ends. The purified water outlet end of the water supply device 100 is connected to the water inlet end of the heating device 200. The water outlet end of the heating device 200 is connected to the heat exchange device 300. The heat exchange device 300 has multiple water inlet ends and water outlet ends. Among them, the purified water inlet end among the water inlet ends is connected to the water outlet end of the heating device 200, and the purified water outlet end outputs cool boiled water at multiple temperature sections. The heat exchange device 300 also has a heat exchange fluid inlet and outlet.

[0098] The water supply device 100 provides the normal temperature purified water required for drinking and has the function of providing a low-temperature heat exchange water source. The purified water is input from the purified water outlet end of the water supply device 100 to the water inlet end of the heating device 200. The heating device 200 heats the purified water to boiling to reach the required temperature. After the purified water is boiled, it is input from the water outlet end of the heating device 200 to the purified water inlet end of the heat exchange device 300. The heat exchange device 300 exchanges heat between the low-temperature fluid and the boiling purified water to cool down, realizing the cooling of the boiling water to meet the requirements of users for cool boiled water at different temperatures. The low-temperature fluid can be normal temperature raw water or normal temperature purified water. The control device 400 collects relevant sensor parameters according to the requirements of users for cool boiled water at different temperatures and flows, and then controls the water supply parameters, heating parameters, and heat exchange parameters to achieve the output of the required cool boiled water.

[0099] The water supply device 100 has different system characteristics according to the raw water quality. When the raw water is of drinking water quality, the water supply device 100 can be a non-purification system, and only through a conveying device (such as a pressure stabilizing pump), the normal temperature purified water is conveyed from the water outlet end of the water supply device to the water inlet end of the heating device, or the heat exchange low-temperature water is conveyed to the heat exchange water inlet of the heat exchange device 300; when the raw water quality is non-drinking water quality, the water supply device 100 can have a corresponding purification system to purify the raw water quality to meet the drinking standard. The purification system can be in the form of a single or combined pretreatment module and advanced treatment module. The pretreatment realizes the preliminary filtration of removing pollutants such as sediment, rust, and residual chlorine in the water quality, and can be in the form of a combination or composite of a primary filter element and an activated carbon filter element. The primary filter element can be a PP cotton filter element or an ultrafiltration filter element, and the activated carbon filter element can be a granular activated carbon, carbon fiber or carbon rod filter element; the advanced treatment module realizes the deep filtration of removing toxic and harmful substances such as heavy metals and microorganisms in the water quality, and can be a combination of one or more of ultrafiltration, nanofiltration or reverse osmosis filtration modules. The normal temperature effluent of the purification system is input into the water inlet end of the heating device 200 through a conveying device or used as the heat exchange low-temperature water source of the heat exchange device 300.

[0100] The heating device 200 has a heating element with adjustable power. The heating element can be a PTC heating element, a rare earth thick film heating element or a metal heating tube, etc. The purified water in contact with the heating element is heated to boiling by the heating. The heating power of the heating element is controlled and adjusted by the control device 400 according to the detected sensing parameters. The boiling purified water is input into the purified water inlet end of the heat exchange device 300 from the water outlet end of the heating element.

[0101] The heat exchange device 300 can be of different structural forms, such as a sleeve, immersion, etc. During operation, the purified water inlet end and the heat exchange fluid inlet respectively input boiling purified water and low-temperature heat exchange fluid. The boiling purified water and the low-temperature heat exchange fluid are separated by a heat-conducting material. Through heat conduction, the boiling purified water is cooled and the heat exchange fluid is heated. The control device 400 controls the operating parameters (such as flow rate, contact time, etc.) of the heat exchange device 300 by detecting the corresponding purified water parameters (such as water temperature, flow rate, etc.) and heat exchange fluid parameters (temperature, volume, etc.), so as to realize the timely delivery of fresh cooled boiled water at different temperature sections and different flow rates.

[0102] The control device 400 senses the operating parameters and environmental parameters of different devices through a variety of sensors, and at the same time selects and operates different control logics according to user needs, starts and stops the corresponding control valves, conveying devices, etc., and adjusts the operating parameters of different devices to make the output cooled boiled water meet the user's needs. The specific logic control method is as follows Figure 4As shown, after receiving the signal for taking hot water (i.e., boiled water) sent from the end, the control main board receives the sensor parameters, determines the temperature and stock of the cooling liquid, as well as the real-time temperature of the boiled water, and controls the operating conditions of the system components according to the relevant parameters, performs valve waterway switching, adjusts the duty cycle of the coolant delivery pump to control the output flow, and adjusts the power of the heating element, so as to output hot water at the required temperature.

[0103] As Figure 2 shown, in the desktop pure hot and cool boiled water system, the water supply device 100 includes a raw water tank 103, and raw water can be automatically or manually added into the raw water tank 103; the water outlet of the raw water tank 103 is connected to the water inlet of a raw water pump 104 (specifically a suction pump), and the water outlet of the raw water pump 104 is connected to a two-way solenoid valve; the two-way solenoid valve has a purified water outlet and a heat exchange water outlet, the purified water outlet is connected to the water inlet of a purification filter element, and the heat exchange water outlet is connected to the heat exchange water inlet of a heat exchange device 300; the purification filter element is a multi-layer composite filter element with functions of pretreatment purification and deep purification, and the purified water meets the drinking standard; the purification filter element has a purified water and a wastewater outlet, the purified water outlet of the filter element is connected to the water inlet of a purified water tank 101, the purified water tank 101 has a certain volume to store the produced purified water, meeting the user's demand for stable water intake without being affected by the water production state of the filter element, the water outlet of the purified water tank 101 is connected to the water inlet of a purified water pump 102 (specifically a micro suction pump), and the water outlet of the micro suction pump is connected to a heating device 200 as the purified water outlet end of the water supply device 100; the wastewater outlet of the filter element is connected to the water inlet of a wastewater control valve 108, the wastewater control valve 108 has two states of operation and flushing, and the water outlet of the wastewater control valve is connected to the water inlet of a wastewater tank 107.

[0104] The heating device 200 is a rare earth thick film heating element, with functions such as rapid heating, stability, and adjustable power. The water outlet end of the heating device 200 is connected to the purified water inlet end of the heat exchange device 300. After purified water with different parameters is input into the heating element, the control device 400 starts the heating element and adjusts the corresponding power parameters according to the sensor parameters, and the temperature of the purified water rapidly rises from normal temperature to boiling and is quickly transported to the heat exchange device 300 for cooling.

[0105] The heat exchange device 300 is a sleeve heat exchange structure, and the structure is as Figure 5 shown, the purified water is input into the heat exchange metal inner tube, the metal inner tube has a corrugated turbulent flow shape for enhancing the heat exchange effect, the metal inner tube is placed in the loop bend of the heat exchange device 300, the heat exchange water enters the loop bend from the heat exchange water inlet end and flows on the outer wall of the heat exchange metal inner tube, the boiled purified water is output from the purified water outlet end of the heat exchange device 300 for users to drink after heat exchange and cooling, and the heated heat exchange water is transported from the heat exchange water outlet end of the heat exchange device 300 to the raw water tank 103 for reuse.

[0106] Example 1:

[0107] The control device 400 is equipped with level and temperature sensors in the raw water tank 103, in the clean water tank 101, and at the water outlet of the heating element. The control device 400 includes a program for controlling the entire machine's operation. This program controls the output power and start-up time of the raw water pump, the switching time of the two-way solenoid valve, the start and stop time of the wastewater control valve, the start and stop time of the micro-pump, the output power, and the output power of the heating element. This allows the entire machine to function as a water dispenser, flushing system, and multi-temperature fresh boiled water supply.

[0108] Among them, the starting conditions for multi-temperature instantaneous fresh boiled water are as follows:

[0109] The raw water level in the raw water tank 103 is higher than the exchange level, the raw water temperature is lower than the highest exchange temperature, the clean water level in the clean water tank 101 is higher than the water production level, the raw water pump 104 is turned on, the two-way solenoid valve is turned to heat exchange, the heating element is started, and the clean water pump 102 is turned on.

[0110] The specific control process of multi-temperature instantaneous fresh boiled water supply is as follows:

[0111] 1. When the user takes boiled water at 45℃ (t3), the terminal takes boiled water signal transmission, the raw water tank level sensor detects that the liquid level is higher than the low level, the raw water tank temperature sensor detects that the raw water (coolant) temperature in the raw water tank is 30℃ (t4) lower than 40℃ (the highest heat exchange temperature), and the clean water tank level is higher than the middle level (starting water level line); when all three conditions are met, the clean water tank temperature sensor detects that the clean water temperature is 25℃ (t1), and the algorithm is used to adjust the clean water pump output to a corresponding flow rate of 0.40L / min (Q1) based on the temperature difference of 70℃ (△t1=95℃-t1), and the heating element is adjusted according to 70℃ (△t1) The power is adjusted synchronously to ensure that the water inlet temperature of the heat exchanger (the boiling water outlet temperature, i.e., the heating temperature) is 95°C. 95°C boiling water enters the heat exchanger at a flow rate of 0.40L / min (Q1). At the same time, the raw water pump is started, and the two-way solenoid valve is switched to the heat exchanger channel. The raw water pump adjusts the outlet flow rate to 0.8L / min (Q2) through an algorithm based on 0.40L / min (Q1) and 50°C (△t2=95°C-t3). 30°C (t4) raw water enters the heat exchanger at a flow rate of 0.8L / min (Q2), and after convection heat exchange, a constant temperature of 45°C (t3) is output.

[0112] Since the raw water pump is a fixed-frequency pump, this solution achieves the purpose of regulating the water flow rate through the form of idle ratio. Taking 200ml of 45℃ boiled water as an example, the total water extraction time is 200 / 1000 / 0.4*60=30s, Q2=0.8L / min, the raw water pump flow rate is 1L / min, and the system starts the raw water pump for 30*0.8 / 1=24s and stops for 6s to achieve a flow rate of 0.8L / min (Q2).

[0113] 2. When the liquid level sensor of the original water tank detects that the liquid level is higher than the low liquid level, and the temperature sensing element of the original water tank detects that the temperature of the raw water (coolant) in the original water tank is 30°C (t4) and lower than 40°C (the highest heat exchange temperature), and the liquid level of the purified water tank is higher than the middle liquid level (start-up water production liquid level line), when one of the three conditions is not met, stop taking cool and boiled water.

[0114] Embodiment 2: On the basis of Embodiment 1, a temperature sensor is added to the water outlet nozzle 500.

[0115] The control device 400 is respectively provided with sensors such as liquid level and temperature in the original water tank 103, sensors such as liquid level and temperature in the purified water tank 101, and temperature sensors at the water outlet end of the heating element and the water outlet nozzle, etc. The control device 400 has a control program for the operation of the whole machine. This control program can control the output power or start-up time of the raw water pump, the switching time of the two-way solenoid valve, the start-stop time of the waste water control valve, the start-stop or output power of the micro water pump, the output power of the heating element, etc. To realize functions such as whole machine water production, flushing, and supply of fresh cool and boiled water in multiple temperature sections.

[0116] Among them, the start-up conditions for taking fresh cool and boiled water instantaneously in multiple temperature sections are as follows:

[0117] The raw water level in the original water tank 103 is higher than the exchange liquid level, the raw water temperature is lower than the highest exchange temperature, the purified water level in the purified water tank 101 is higher than the water production liquid level, the raw water pump 104 is turned on, the two-way solenoid valve is connected to the heat exchanger, the heating element is started, and the purified water pump 102 is turned on.

[0118] The specific control process for supplying fresh cool and boiled water instantaneously in multiple temperature sections is as follows:

[0119] 1. When the user takes lukewarm boiled water at 45°C (t3), the signal for taking lukewarm boiled water is transmitted at the end. The original water tank level sensor detects that the liquid level is higher than the low liquid level. The temperature sensor in the original water tank detects that the temperature of the raw water (coolant) in the original water tank is 30°C (t4), which is lower than 40°C (the highest heat exchange temperature). The liquid level in the purified water tank is higher than the middle liquid level (the start-up water production liquid level line). When all three conditions are met, the temperature sensor in the purified water tank detects that the temperature of the purified water is 25°C (t1). According to the temperature difference of 70°C (△t1 = 95°C - t1), the output flow rate of the purified water pump is adjusted to 0.40 L / min (Q1) through an algorithm. The heating element synchronously adjusts the power according to 70°C (△t1) to ensure that the inlet water temperature of the heat exchanger (the boiling water outlet temperature, i.e., the heating temperature) is 95°C. The 95°C boiling water enters the heat exchanger at a flow rate of 0.40 L / min (Q1). At the same time, the original water pump is started, and the two-way solenoid valve is switched to the heat exchanger channel. The original water pump adjusts the outlet flow rate to 0.8 L / min (Q2) through an algorithm according to 0.40 L / min (Q1) and 50°C (△t2 = 95°C - t3). The 30°C (t4) raw water enters the heat exchanger at a flow rate of 0.8 L / min (Q2). After convective heat exchange, lukewarm boiled water at a constant temperature of 45°C (t3) is output. Since the ambient temperature of 30°C (the same as the raw water temperature t4) is usually lower than the water intake temperature of 45°C (t3). And the pipeline between the heat exchanger and the water outlet nozzle and the cavity of the water intake nozzle will dissipate heat and cool down. When the user takes water, the temperature sensor at the water outlet nozzle monitors that the actual temperature of 40°C (t5) is lower than the set value of 45°C (t3). The system recalculates and corrects. Since the temperature of the purified water of 25°C (t1) remains unchanged, the flow rate of the inner pipe remains the same. The 95°C boiling water enters the heat exchanger at a flow rate of 0.40 L / min (Q1). The original water pump adjusts the outlet flow rate to 0.8 * 40 / 45 = 0.71 L / min (Q3) according to the temperature difference ratio of 40 / 45 (t5 / t3). The 30°C (t4) raw water enters the heat exchanger at a flow rate of 0.71 L / min (Q3). After convective heat exchange, lukewarm boiled water at a constant temperature of 45°C (t3) is output. The system continuously recalculates and corrects according to the actual temperature tn monitored by the temperature sensor at the water outlet nozzle until the water intake temperature is 45°C (t3).

[0120] Since the original water pump is a fixed-frequency pump, in this solution, the purpose of adjusting the outlet flow rate is achieved through the form of duty cycle. Taking 200 ml of lukewarm boiled water at 45°C as an example, the total water intake time is 200 / 1000 / 0.4 * 60 = 30 s. Q2 = 0.8 L / min, and the flow rate of the original water pump is 1 L / min. The system starts the original water pump for 30 * 0.8 / 1 = 24 s and stops for 6 s to achieve a flow rate of 0.8 L / min (Q2). Other flow rate adjustments are carried out according to the above logic.

[0121] 2. When any one of the following three conditions is not met, the extraction of cool purified water is stopped: the liquid level detected by the original water tank liquid level sensor is higher than the low liquid level, the temperature sensing element of the original water tank detects that the temperature of the original water (coolant) in the original water tank is 30°C (t4), which is lower than 40°C (the highest heat exchange temperature), and the liquid level in the purified water tank is higher than the middle liquid level (the start-up water production liquid level line).

[0122] Embodiment 3: Adjust the power of the heating element on the basis of Embodiment 1.

[0123] The control device 400 is respectively provided with sensors such as liquid level and temperature in the original water tank 103, sensors such as liquid level and temperature in the purified water tank 101, and sensors such as temperature at the water outlet end of the heating element. The control device 400 has a control program for the operation of the whole machine. This control program can control the output power or start-up time of the original water pump, the switching time of the two-way solenoid valve, the start-stop time of the waste water control valve, the start-stop or output power of the micro water pump, the output power of the heating element, etc. To realize functions such as whole machine water production, flushing, and supply of fresh cool purified water in multiple temperature segments.

[0124] Among them, the start-up conditions for instant fresh cool purified water extraction in multiple temperature segments are as follows:

[0125] The original water level in the original water tank 103 is higher than the exchange liquid level, the original water temperature is lower than the highest exchange temperature, the purified water level in the purified water tank 101 is higher than the water production liquid level, the original water pump 104 is turned on, the two-way solenoid valve is connected to the heat exchanger, the heating element is started, and the purified water pump 102 is turned on.

[0126] The specific control process for the supply of instant fresh cool purified water in multiple temperature segments is as follows:

[0127] 1. When the user extracts cool purified water at 45°C (t3), the signal for extracting cool purified water at the end is transmitted. The liquid level sensor of the original water tank detects that the liquid level is higher than the low liquid level. The temperature sensing element of the original water tank detects that the temperature of the original water (coolant) in the original water tank is 30°C (t4), which is lower than 40°C (the highest heat exchange temperature). The liquid level in the purified water tank is higher than the middle liquid level (the start-up water production liquid level line). When all three conditions are met, the temperature sensing element of the purified water tank detects that the temperature of the purified water is 25°C (t1). According to the temperature difference of 70°C (△t1 = 95°C - t1), the output corresponding flow rate of the purified water pump is adjusted to 0.40 L / min (Q1) through an algorithm. The heating element synchronously adjusts the power w1 according to 70°C (△t1) to ensure that the water inlet temperature of the heat exchanger (the boiling water outlet temperature, that is, the heating temperature) is 95°C. The 95°C boiling water enters the heat exchanger at a flow rate of 0.40 L / min (Q1). At the same time, the original water pump is started, the two-way solenoid valve is switched to the heat exchanger channel, and the original water pump adjusts the water outlet flow rate to 0.8 L / min (Q2) through an algorithm according to 0.40 L / min (Q1) and 50°C (△t2 = 95°C - t3). The 30°C (t4) original water enters the heat exchanger at a flow rate of 0.8 L / min (Q2), and after convective heat exchange, cool purified water at a constant temperature of 45°C (t3) is output.

[0128] When the user takes warm boiled water at 35°C (t5), the signal for taking warm boiled water is transmitted at the end. The liquid level sensor of the original water tank detects that the liquid level is higher than the low liquid level. The temperature sensing element of the original water tank detects that the temperature of the original water (coolant) in the original water tank is 30°C (t4), which is lower than 40°C (the highest heat exchange temperature). The liquid level of the purified water tank is higher than the middle liquid level (the starting water production liquid level line). When all three conditions are met, the temperature sensing element of the purified water tank detects that the temperature of the purified water is 25°C (t1). Keep the output flow rate of the purified water pump at 0.40 L / min (Q1) unchanged. The heating element adjusts the heating element to operate at 92% of w1 (△t3 / △t1 = 65 / 70) according to 65°C (△t3 = 90 - 25°C) to ensure that the inlet water temperature of the heat exchanger (the outlet water temperature of the boiled water, i.e., the new heating temperature) is 90°C. The 90°C boiled water enters the heat exchanger at a flow rate of 0.40 L / min (Q1). At the same time, start the original water pump, switch the two-way solenoid valve to the heat exchanger channel, keep the flow rate of the original water pump unchanged, and the 30°C (t4) original water enters the heat exchanger at a flow rate of 0.8 L / min (Q2). After convective heat exchange, warm boiled water at a constant temperature of 35°C (t5) is output.

[0129] Since the original water pump is a fixed-frequency pump, in this solution, the purpose of adjusting the outlet water flow rate is achieved through the form of duty cycle. Taking 200 ml of warm boiled water at 45°C as an example, the total water intake time is 200 / 1000 / 0.4*60 = 30 s. Q2 = 0.8 L / min, and the flow rate of the original water pump is 1 L / min. The system starts the original water pump for 30*0.8 / 1 = 24 s and stops for 6 s to reach a flow rate of 0.8 L / min (Q2).

[0130] 2. When one of the three conditions that the liquid level sensor of the original water tank detects that the liquid level is higher than the low liquid level, the temperature sensing element of the original water tank detects that the temperature of the original water (coolant) in the original water tank is 30°C (t4), which is lower than 40°C (the highest heat exchange temperature), and the liquid level of the purified water tank is higher than the middle liquid level (the starting water production liquid level line) is not met, stop taking warm boiled water.

[0131] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0132] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A cooled boiled water supply system, characterized in that, It includes a water supply device, a heating device, a heat exchange device and a control device; The water supply device is used to provide water source to the heating device. The heating device is used to heat water until it reaches a set heating temperature and then convey it to the heat exchange device. The heat exchange device is used to exchange heat and cool the received water; The control device is used to adjust the parameters of the water supply device and the heating device according to the set target outlet water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature; Wherein, the water supply device includes a pure water pump, a raw water pump, a purification component, a raw water tank, a pure water tank and a two-way control valve. The pure water pump is connected to the heating device, and the control device is connected to the pure water pump; The raw water pump is connected to the purification component, the purification component is connected to the pure water pump, and the control device is connected to the raw water pump; The raw water pump is connected to the water outlet of the raw water tank and is connected to the purification component and the heat exchange device through the two-way control valve, and the control device is connected to the two-way control valve; The pure water tank is connected to the pure water pump and the purification component. The two-way control valve is connected to the heat exchange inlet of the heat exchange device, and the heat exchange outlet of the heat exchange device is connected to the water return port of the raw water tank; When no boiled water is prepared, the control device adjusts the two-way control valve to make the raw water in the raw water tank pass through the purification component for filtration and purification, and then obtain purified water and convey it to the pure water tank for storage; After receiving the signal to fetch boiled water, when preparing boiled water, the control device adjusts the two-way control valve to convey the raw water in the raw water tank to the heat exchange device for heat exchange, and the raw water after heat exchange returns to the raw water tank again.

2. The cooled boiled water supply system according to claim 1, wherein, The control device is also used to adjust the parameters of the water supply device and the heating device according to the set target outlet water temperature after judging that the water intake start condition is met according to the collected waterway data.

3. The cooled boiled water supply system according to claim 1, characterized in that The water supply device further includes a waste water tank and a waste water control valve. The waste water control valve is connected to the waste water tank and the purification component, and the control device is connected to the waste water control valve.

4. The cooled boiled water supply system according to claim 3, wherein The waste water tank and the raw water tank are integrally formed into a water tank. The water tank is provided with a raw water chamber and a waste water chamber. The raw water chamber is used to store raw water, and the waste water chamber is used to store waste water.

5. The cooled boiled water supply system according to claim 1, characterized in that, It further includes a parameter acquisition device connected to the control device. The parameter acquisition device acquires waterway data and sends it to the control device. The control device adjusts the parameters of the water supply device and the heating device according to the set target outlet water temperature and the waterway data.

6. The cooled boiled water supply system according to claim 5, characterized in that, The parameter acquisition device includes a pure water level sensor, a pure water temperature sensor, a raw water level sensor and a raw water temperature sensor connected to the control device; The pure water level sensor is arranged in the pure water tank and is used to detect the pure water level and send it to the control device; The pure water temperature sensor is arranged in the pure water tank and is used to detect the pure water temperature and send it to the control device; The raw water level sensor is arranged in the raw water tank and is used to detect the raw water level and send it to the control device; The raw water temperature sensor is arranged in the raw water tank and is used to detect the raw water temperature and send it to the control device; The control device is used to adjust the parameters of the water supply device and the heating device according to the target outlet water temperature and the purified water temperature when the purified water level, the raw water level and the raw water temperature meet the preset water intake start conditions.

7. The cooled boiled water supply system according to claim 6, characterized in that, The parameter acquisition device further includes a heating temperature sensor arranged at the outlet of the heating device and connected to the control device, which is used to detect the heating outlet water temperature of the heating device and send it to the control device.

8. The cooled boiled water supply system according to claim 6, characterized in that, The parameter acquisition device further includes an outlet water temperature sensor connected to the control device, and the outlet water temperature sensor detects the actual outlet water temperature of the heat exchange device and sends it to the control device.

9. A drinking water device, characterized in that, It includes the cooled boiled water supply system according to any one of claims 1-8.

10. A control method for a cooled boiled water supply system, characterized in that, Implemented based on the cooled boiled water supply system according to any one of claims 1-8, including the following steps: Adjust the parameters of the water supply device and the heating device according to the set target outlet water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature.

11. The method for controlling a cooled boiled water supply system according to claim 10, wherein The adjusting the parameters of the water supply device and the heating device according to the set target outlet water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature, includes: When it is judged that the water intake start conditions are met according to the collected waterway data, adjust the parameters of the water supply device and the heating device according to the target outlet water temperature and the purified water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature.

12. The method for controlling a cooled boiled water supply system according to claim 11, wherein The water intake start conditions include that the raw water level is higher than the preset exchange liquid level threshold, the raw water temperature is lower than the exchange water temperature threshold, and the purified water level is higher than the preset water production liquid level threshold.

13. The method for controlling a cooled boiled water supply system according to claim 11 or 12, characterized in that, The adjusting the parameters of the water supply device and the heating device according to the target outlet water temperature and the purified water temperature, so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature, includes: Adjust the output flow of the purified water pump and the power of the heating device according to the temperature difference between the heating temperature and the purified water temperature, so that the heating device heats the purified water to the heating temperature; Adjust the output flow of the raw water pump according to the output flow of the purified water pump and the temperature difference between the heating temperature and the target outlet water temperature, so that the raw water and the purified water in the heat exchange device perform convective heat exchange and output cooled boiled water with a temperature matching the target outlet water temperature.

14. The method for controlling a cooled boiled water supply system according to claim 13, characterized in that, The adjusting the output flow of the raw water pump according to the output flow of the purified water pump and the temperature difference between the heating temperature and the target outlet water temperature, so that the raw water and the purified water in the heat exchange device perform convective heat exchange and output cooled boiled water with a temperature matching the target outlet water temperature, includes: Adjust the output flow of the raw water pump according to the output flow of the purified water pump and the temperature difference between the heating temperature and the target outlet water temperature, so that the raw water and the purified water in the heat exchange device perform convective heat exchange; Adjust the output flow of the raw water pump according to the ratio of the monitored actual outlet water temperature to the target outlet water temperature, so that the heat exchange device outputs cooled boiled water with a temperature matching the target outlet water temperature.

15. The method for controlling a cooled boiled water supply system according to claim 10, wherein After adjusting the parameters of the water supply device and the heating device according to the set target outlet water temperature so that the temperature of the cooled boiled water output by the heat exchange device matches the target outlet water temperature, it further includes: Receiving the updated target outlet water temperature, and adjusting the parameters of the heating device according to the water temperature in the water supply device and the current heating parameters of the heating device, so that the temperature of the cooled boiled water output by the heat exchange device matches the updated target outlet water temperature.

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