Cabinet direct drinking machine temperature control method and device adopting composite heat dissipation

Abstract

The invention discloses a cabinet direct drinking machine temperature control method and device adopting composite heat dissipation, and solves the problems that an existing direct drinking machine adopts a compressor for ice making, the structure is complex, the refrigeration time is long, a semiconductor refrigeration sheet is adopted, the heat dissipation efficiency is low, an ice liner needs to store water, and bacteria breed. The method comprises: acquiring a target temperature, and setting a working mode according to the target temperature; in the standby stage, pre-temperature adjustment is conducted on the water purification water-cooling plate; calculating the standard temperature of the purified water cooling plate in the using stage; and acquiring the current temperature of the water-purifying water-cooling plate, judging whether the temperature of the water-purifying water-cooling plate is equal to the standard temperature or not, and if not, adjusting the pressure so as to discharge water after the associated wastewater ratio is reached. Different waste water ratios are achieved by adjusting the pressure of the water purification module, outlet water temperature adjustment is achieved, refrigeration does not need first-time pre-cooling, time is shortened, the direct drinking purpose is achieved, ice container water storage is not needed, and the problems of space occupation and bacterium breeding are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of direct drinking machines, and in particular to a temperature control method and device for a cabinet direct drinking machine using composite heat dissipation. Background Art

[0002] At present, the water purifiers with ice water making function on the market are divided into two categories, one is the water purifier with ice tank water storage, and the other is the semi-direct drinking machine without ice tank. According to the refrigeration method, there are two methods: compressor cooling water and semiconductor cooling plate cooling water. Among them, the cooling efficiency of compressor cooling water is higher than that of semiconductor cooling plate method. Under the same power consumption, the cooling capacity of compressor is 2~3 times that of semiconductor cooling method. Therefore, compressor cooling is generally used in semi-direct drinking machines, but its first cooling water time also takes 20-30 minutes, and it does not realize the real direct drinking function; semiconductor cooling method has a simple structure and high reliability, but the cooling capacity is less than compressor cooling under the same power consumption, so it is generally necessary to use ice tank to store cold water. Users drink stored ice water, which has problems such as bacterial growth.

[0003] Compressor-type direct drinking machines involve four major parts of mechanical refrigeration, with complex structures and pipelines, multiple production and manufacturing processes, and require welding of copper pipes and leak detection. The production efficiency is low, and problems such as vibration noise, maintenance and replacement difficulties need to be solved. At the same time, in order to produce hot water, it is necessary to wrap the heating wire outside the pipeline, resulting in too many direct drinking machine structural parts, which is not conducive to the rapid maintenance and replacement of parts. Semiconductor refrigeration chip-type direct drinking machines mostly use air cooling for heat dissipation, which has problems such as low heat dissipation efficiency, insufficient cooling capacity or large size. Summary of the invention

[0004] The present invention mainly solves the problems that the existing direct drinking machine for making ice uses a compressor with a complex structure and a long refrigeration time, and uses a semiconductor refrigeration sheet with a low heat dissipation efficiency and requires ice tank water storage, which may lead to bacterial growth. A temperature control method and device for a cabinet direct drinking machine using composite heat dissipation is provided.

[0005] The above technical problem of the present invention is mainly solved by the following technical solution: a temperature control method of a cabinet direct drinking machine using composite heat dissipation, comprising: Get the target temperature and set the working mode according to the target temperature; Pre-temperature adjustment of the purified water cooling plate during the standby stage; During the use phase, calculate the standard temperature of the clean water cooling plate when the clean water outlet temperature reaches the target temperature when the refrigeration module is working at full power; Get the current temperature of the water cooling plate and determine whether the temperature of the water cooling plate is equal to the standard temperature. When the clean water cooling plate temperature is equal to the standard temperature, water is discharged at the associated wastewater ratio; When the temperature of the clean water cooling plate is not equal to the standard temperature, the pressure is adjusted to achieve the associated wastewater ratio before water discharge.

[0006] The present invention achieves different wastewater ratios, i.e., the ratio of clean water to sewage, by adjusting the pressure of the water purification module, and realizes the adjustment of the outlet water temperature between 0°C and 90°C. The temperature control method is simple, and there is no need for a multi-parameter control interface to control the outlet water temperature. The present invention realizes the direct drinking machine to discharge water at different temperatures through a temperature control method, and the refrigeration and heating modules are integrated, without the need for two systems: compressor refrigeration and resistance wire heating. There is no need for the first pre-cooling of the compressor and semiconductor air-cooling, which solves the problem of long first refrigeration time of the compressor and semiconductor air-cooling, and truly realizes the purpose of drinking ice water at any time. The present invention can control temperature refrigeration to achieve direct drinking, and does not require an ice tank structure for water storage, which reduces the space occupied by the ice tank and avoids bacterial growth.

[0007] As a preferred solution, the calculation of the standard temperature of the clean water cooling plate when the clean water outlet temperature reaches the target temperature when the refrigeration module is in full power working state includes: The associated clean water flow rate is obtained when the clean water outlet temperature reaches the target temperature, and the standard temperature of the clean water cooling plate under the associated clean water flow rate is calculated according to the target temperature, the convection heat transfer coefficient and the heat exchange area of ​​the clean water cooling plate.

[0008] This solution obtains the corresponding associated clean water flow rate according to the target temperature. The associated clean water flow rate is obtained according to the pre-established direct drinking machine model that associates the target temperature with the clean water flow rate, and then the standard temperature of the clean water cooling plate under the associated clean water flow rate is calculated by combining the convection heat transfer coefficient and heat transfer area of ​​the clean water cooling plate. That is, when the clean water outlet temperature is the target temperature, the required temperature of the clean water cooling plate under the associated clean water flow rate is calculated. The specific formula is as follows: T i =K*T s +a K=(4.2 / hA)Q m +0.5 a=(0.5-(4.2 / hA)Q m +0.5)T c Among them, T s is the target temperature, T i is the standard temperature of the clean water cooling plate at the target temperature, h is the convective heat transfer coefficient of the clean water cooling plate, A is the heat transfer area of ​​the clean water cooling plate, T c is room temperature, to represent the water temperature without treatment, Q m It is the clean water flow rate, which is the mass flow rate and is affected by the filter element of the water purification module. The range is 0~1.5L / min.

[0009] As a preferred solution, the method of obtaining the associated purified water flow rate when the purified water outlet temperature reaches the target temperature includes: Establish a model based on self-learning to associate the target temperature with the clean water flow rate and wastewater ratio; Obtain the associated parameters of direct drinking machines under several typical target temperature conditions to establish a data set, use the data set to train the model, and obtain a direct drinking machine model; According to the direct drinking machine model, the associated clean water flow rate and the associated wastewater ratio data of each target temperature are obtained.

[0010] This solution first establishes a model that associates the target temperature with the clean water flow rate and the wastewater ratio. The target temperature, clean water flow rate, wastewater ratio and other related data are obtained to establish a data set, and the model is trained to obtain a direct drinking machine model related to the target temperature, clean water flow rate and wastewater ratio. According to the direct drinking machine model, the associated clean water flow rate and associated wastewater ratio associated with each target temperature can be automatically summarized, and the corresponding association mapping table can be established for use in the direct drinking machine operation.

[0011] As a preferred solution, when the temperature of the clean water cooling plate is not equal to the standard temperature, the pressure is adjusted to achieve the associated wastewater ratio before water discharge, including: When the temperature of the purified water cooling plate is not equal to the standard temperature, and the temperature of the purified water cooling plate is greater than the standard temperature, the pressure of the purified water module is reduced, and the wastewater ratio is detected in real time until the current wastewater ratio is consistent with the associated wastewater ratio, and the pressure regulation is stopped, and purified water is output at the current wastewater ratio, and drinking water of the target temperature is obtained after passing through the purified water cooling plate; When the temperature of the purified water cooling plate is not equal to the standard temperature, and the temperature of the purified water cooling plate is lower than the standard temperature, the pressure of the purified water module is increased, and the wastewater ratio is detected in real time until the current wastewater ratio is consistent with the associated wastewater ratio, and the pressure regulation is stopped, and purified water is output at the current wastewater ratio, and drinking water of the target temperature is obtained after passing through the purified water cooling plate.

[0012] This solution compares the temperature of the clean water cooling plate with the standard temperature. If they are not equal, it means that the temperature of the clean water cooling plate cannot adjust the clean water temperature to the target temperature under the current clean water flow rate. The clean water flow rate is adjusted by adjusting the pressure of the water purification module. The pressure is adjusted until the wastewater ratio of the direct drinking machine is equal to the associated wastewater ratio. Since the associated wastewater ratio and the associated clean water flow rate are obtained according to the target temperature, when the associated wastewater ratio is reached, that is, the clean water flow rate reaches the associated clean water flow rate, then the temperature of the clean water cooling plate is equal to the standard temperature. Stop pressure regulation and output clean water at the current wastewater ratio. After the temperature of the clean water cooling plate is adjusted, the clean water reaches the target temperature and flows into the user's water container, and the user can drink it directly. At the same time, sewage flows into the sewage cooling plate, taking away heat or cold, and is discharged to the drainage pipe through the drain outlet.

[0013] As a preferred solution, the setting of the working mode according to the target temperature includes: Get the current temperature of the water cooling plate, compare the target temperature with the temperature of the water cooling plate, When the target temperature is lower than the temperature of the purified water cooling plate, set the direct drinking machine to cooling mode. When the target temperature is greater than the temperature of the purified water cooling plate, set the direct drinking machine to heating mode.

[0014] This solution determines whether the water purifier is in cooling mode or heating mode by comparing the target temperature with the temperature of the water cooling plate, achieving intelligent control without the need for manual operation by the user.

[0015] As a preferred solution, the pre-temperature adjustment of the purified water cooling plate in the standby stage includes: Set the preheating temperature in the working mode. In the standby stage, adjust the working voltage of the refrigeration module according to the target temperature, adjust the temperature of the purified water cooling plate to the preheating temperature and maintain it stable.

[0016] This solution sets the preheating temperature of the water cooling plate according to the working mode. The preheating temperature is based on the product positioning. For example, the preheating temperature in cooling mode is -20℃~-5℃, and the preheating temperature in heating mode is set to 60℃.

[0017] As a preferred solution, a sterilization mode is also included, including the following steps: In the standby stage, the water purification cooling plate is heated to the sterilization temperature, the water outlet switch is turned on, the water flowing through the water purification cooling plate is heated and discharged, and the cooling or heating mode is restored after the sterilization mode ends.

[0018] In this solution, the direct drinking machine can also use the heating function of the refrigeration module to achieve sterilization at any time during the standby stage, avoiding the inconvenience and incomplete sterilization problems of traditional cold tank and compressor water purifiers. In order to avoid the problem of large-scale bacterial growth in the cold water in the water cooling plate of the water purifier, the user can set it to timed sterilization according to their preferences, start the heating function of the refrigeration module at the set time, heat the temperature of the water purification water cooling plate to the sterilization temperature to achieve high-temperature sterilization. The sterilization temperature is a pre-set temperature, and the device turns on the water outlet switch. The water in the water purification module is filtered to form clean water that flows into the water purification water cooling plate. The cooling mode heats the clean water flowing through, and the high-temperature clean water flushes the water purification water cooling plate, pats off the dirt and discharges it. After the sterilization mode, the direct drinking machine is restored to the cooling mode or heating mode according to the target temperature to continue working.

[0019] As a preferred solution, it includes a water purification module, a refrigeration module and a control and display module. The refrigeration module includes a water purification water cooling plate and a sewage water cooling plate. A first semiconductor refrigeration plate and a second semiconductor refrigeration plate are respectively arranged on both sides of the water purification water cooling plate. The sewage refrigeration plate is arranged on the first semiconductor refrigeration plate, and a radiator is arranged on the second semiconductor refrigeration plate. The water purification pipeline of the water purification module is connected to the input end of the water purification water cooling plate, and the output end of the water purification water cooling plate is connected to the water outlet. The sewage pipeline of the water purification module is connected to the input end of the sewage water cooling plate, and the output end of the sewage water cooling plate is connected to the drain. The control and display module is respectively controlled and connected to the first semiconductor refrigeration plate and the second semiconductor refrigeration plate.

[0020] Room temperature water is stored in the water purification module, which filters the water into clean water and sewage, and is connected to the clean water water cooling plate through the clean water pipeline and to the sewage water cooling plate through the sewage pipeline, wherein a water outlet switch is provided on the clean water pipeline. The refrigeration module is used to cool or heat the clean water input to the clean water cooling plate. The control display module is used to control the operation of the refrigeration module and control the temperature of cooling or heating so that the output clean water is the set target temperature. The specific refrigeration module uses a water cooling plate for heat exchange, clean water is passed into the clean water cooling plate, semiconductor refrigeration plates are respectively provided on both sides of the clean water cooling plate, and the water cooling plate is cooled or heated from both sides together, a sewage water cooling plate is provided on the first semiconductor refrigeration plate, and the heat or cold is taken away by the sewage, and a radiator is provided on the second semiconductor refrigeration plate to dissipate the heat of the second semiconductor refrigeration plate, and a composite heat dissipation is adopted, and the heat dissipation efficiency is high.

[0021] As a preferred solution, the refrigeration module further includes a fan, which is installed on the side of the radiator. A temperature sensor is provided on the purified water cooling plate, and the control display module controls the fan and the temperature sensor respectively.

[0022] In this solution, the temperature sensor is used to detect the temperature of the water cooling plate, and the detected temperature is fed back to the control display module for temperature control of cooling or heating. In addition, a fan is installed on one side of the radiator. In the cooling mode, the fan works as the radiator to dissipate heat, and the fan is also controlled by the control display module.

[0023] As a preferred solution, the clean water cooling plate and the sewage water cooling plate include an internal cavity, in which a number of staggered partitions are arranged, the partitions divide the cavity into a circuitous channel, the input and output ends of the water cooling plate are respectively arranged at both ends of the channel, and a plurality of heat exchange modules are arranged in the channel, and the heat exchange modules include a plurality of fins arranged along the water flow direction of the channel.

[0024] The structure of the clean water cooling plate is the same as that of the sewage water cooling plate, both of which adopt a plate-like structure. A number of staggered partitions are arranged in the cavity. The partitions divide the cavity into a circuitous channel, which increases the heat exchange path, and multiple heat exchange modules are arranged on the channel. The heat exchange module is a plurality of fins arranged along the water flow direction. The upper and lower ends of the fins are respectively connected to the inner surface of the water cooling plate, and microchannels for water flow are formed between the fins. Multiple fins increase the heat exchange area and improve the heat exchange efficiency.

[0025] Therefore, the advantages of the present invention are: 1. By adjusting the pressure of the water purification module, different wastewater ratios, i.e., the ratio of clean water to sewage, can be achieved, and the outlet water temperature can be adjusted between 0°C and 90°C. The temperature control method is simple, and there is no need for a multi-parameter control interface to control the outlet water temperature.

[0026] 2. The temperature control method is used to achieve water output from the direct drinking machine at different temperatures. The refrigeration and heating modules are integrated, eliminating the need for two systems: compressor refrigeration and resistance wire heating.

[0027] 3. No need for the initial pre-cooling of compressors and semiconductor air-cooling, which solves the problem of long initial cooling time of compressors and semiconductor air-cooling, and truly realizes the purpose of drinking ice water at any time.

[0028] 4. It can control the temperature and refrigerate to achieve direct drinking, without the need for an ice tank structure to store water, which reduces the space occupied by the ice tank and avoids bacterial growth.

[0029] 5. The composite heat dissipation structure combining radiator and sewage water cooling plate is adopted, which has high heat dissipation efficiency and small occupied volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of a process of the present invention.

[0031] Figure 2 It is a structural block diagram of the device of the present invention.

[0032] Figure 3 It is a structural schematic diagram of the refrigeration module of the present invention.

[0033] Figure 4 It is a structural schematic diagram of the water cooling plate in the present invention.

[0034] 1-water purification module 2-refrigeration module 3-control display module 21-purification water cooling plate 22-sewage water cooling plate 23-first semiconductor refrigeration plate 24-second semiconductor refrigeration plate 25-radiator 26-fan 27-sensor 28-water outlet switch 29-first insulation layer 210-second insulation layer 201-partition 202-channel 203-heat exchange module 204-fin. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0036] Example: This embodiment is a method for controlling the temperature of a cabinet direct drinking machine using a composite heat dissipation method. Figure 1 As shown, the following steps are included: S1. Get the target temperature and set the working mode according to the target temperature; S2. Pre-temperature adjustment of the purified water cooling plate during the standby phase; S3. Calculate the standard temperature of the clean water cooling plate when the clean water outlet temperature reaches the target temperature when the refrigeration module is working at full power during the use phase; S4. Get the current temperature of the water purification cooling plate and determine whether the temperature of the water purification cooling plate is equal to the standard temperature. When the clean water cooling plate temperature is equal to the standard temperature, water is discharged at the associated wastewater ratio; When the temperature of the clean water cooling plate is not equal to the standard temperature, the pressure is adjusted to achieve the associated wastewater ratio before water discharge.

[0037] The present invention achieves different wastewater ratios, i.e., the ratio of clean water to sewage, by adjusting the pressure of the water purification module, and realizes the adjustment of the outlet water temperature between 0°C and 90°C. The temperature control method is simple, and there is no need for a multi-parameter control interface to control the outlet water temperature. The present invention realizes the direct drinking machine to discharge water at different temperatures through a temperature control method, and the refrigeration and heating modules are integrated, without the need for two systems: compressor refrigeration and resistance wire heating. There is no need for the first pre-cooling of the compressor and semiconductor air-cooling, which solves the problem of long first refrigeration time of the compressor and semiconductor air-cooling, and truly realizes the purpose of drinking ice water at any time. The present invention can control temperature refrigeration to achieve direct drinking, and does not require an ice tank structure for water storage, which reduces the space occupied by the ice tank and avoids bacterial growth.

[0038] As a preferred solution of this embodiment, obtaining the target temperature and setting the working mode according to the target temperature specifically include: Get the current temperature of the water cooling plate, compare the target temperature with the temperature of the water cooling plate, When the target temperature is lower than the temperature of the purified water cooling plate, set the direct drinking machine to cooling mode. When the target temperature is greater than the temperature of the purified water cooling plate, set the direct drinking machine to heating mode.

[0039] The target temperature is the currently set water outlet target temperature, and the temperature of the purified water cooling plate is the temperature detected in real time by the temperature sensor set on the purified water cooling plate. When the target temperature is modified at the first power-on startup or in the standby stage, the direct drinking machine judges the current working state and determines the heating mode or cooling mode. One use case of the direct drinking machine in this embodiment is a fixed use mode, in which the target temperature is pre-set by the user. The user continues to use purified water at the target temperature within a period of time and does not change the target temperature frequently, such as using ice water in summer and hot water in winter. When the environment changes with the season or other needs change, the target temperature of the direct drinking machine is changed. In the case of modifying the target temperature, the direct drinking machine needs to adjust from the previous working state of the target temperature to the working state of the modified target temperature, that is, to adjust the preheating temperature, such as from cooling mode to heating mode. The preheating temperature adjustment process requires a time transition, but this process is relatively fast, generally 30s-180s.

[0040] The direct drinking machine determines its working status every time it is powered on. When it is turned on, the temperature of the water cooling plate is generally close to the room temperature. Compared with the room temperature, the target temperature of the water purifier selected by the user is generally lower ice water or higher hot water, which is quite different from the room temperature. The target temperature is generally greater than the current water cooling plate temperature or less than the current water cooling plate temperature. It is rare that the target temperature is equal to the current water cooling plate temperature. If the set target temperature is equal to the current water cooling plate temperature, it is judged that it is not in cooling mode or heating mode, and the cooling module does not work. At this time, the user can drink purified water at room temperature.

[0041] As a preferred solution of this embodiment, pre-temperature adjustment is performed on the purified water cooling plate during the standby stage, including: Set the preheating temperature in the working mode. In the standby stage, adjust the working voltage of the refrigeration module according to the target temperature, adjust the temperature of the purified water cooling plate to the preheating temperature and maintain it stable.

[0042] Specifically, the preheating temperature of the water purification cold plate in the heating mode and the cooling mode is set respectively. In the cooling mode, the preheating temperature range is -20℃~-5℃, which is set according to the product positioning. Generally, the preheating temperature is lower than the target temperature so that the purified water can be cooled more quickly. After power-on, if the target temperature of the direct drinking machine is set to 4℃, the control display module turns on the cooling mode, adjusts the input voltage of the semiconductor refrigeration film according to this temperature, starts the fan to run at full power, and reduces the temperature of the water cooling plate to the preheating temperature. In the heating mode, the preheating temperature is higher than the target temperature, so that the purified water can be heated more quickly. In this embodiment, the preheating temperature of the facility is 60℃. After power-on, if the target temperature of the direct drinking machine facility is 45℃, the control display module turns on the heating mode, the fan does not work, and the input voltage of the semiconductor refrigeration film is adjusted according to the target temperature, so that the water purification cold plate is heated to the preheating temperature and stabilized at this value.

[0043] As a preferred solution of this embodiment, the calculation of the standard temperature of the clean water cooling plate when the clean water outlet temperature reaches the target temperature when the refrigeration module is in full power working state in step S3 includes: The associated clean water flow rate is obtained when the clean water outlet temperature reaches the target temperature, and the standard temperature of the clean water cooling plate under the associated clean water flow rate is calculated according to the target temperature, the convection heat transfer coefficient and the heat exchange area of ​​the clean water cooling plate.

[0044] Specifically, the associated clean water flow corresponding to the target temperature is obtained, and the associated clean water flow is obtained according to a pre-established direct drinking machine model that associates the target temperature with the clean water flow. Then, the standard temperature of the clean water cooling plate under the associated clean water flow is calculated in combination with the convection heat transfer coefficient and the heat exchange area of ​​the clean water cooling plate. That is, when the clean water outlet temperature is the target temperature, the temperature that the clean water cooling plate needs to reach under the associated clean water flow is calculated.

[0045] The standard temperature calculation formula of the clean water cooling plate is as follows: T is =K*T s +a K=(4.2 / hA)Q m +0.5 a=(0.5-(4.2 / hA)Q m +0.5)T c Among them, T s is the target temperature, T is is the standard temperature of the clean water cooling plate at the target temperature, h is the convective heat transfer coefficient of the clean water cooling plate, A is the heat transfer area of ​​the clean water cooling plate, T c is room temperature, 25°C, to represent the water temperature without treatment, Q m is the clean water flow rate, which is the mass flow rate and is affected by the filter element of the water purification module. The range is 0~1.5L / min. 4.2 is the specific heat capacity of water, the unit is J / g. 0.5 is the coefficient after the formula is simplified, and the value range is 0.42~0.6, and the typical value is 0.5.

[0046] Step S3 is divided into cooling mode and heating mode. The working mode is different. At different preheating temperatures, the parameter values ​​calculated according to the target temperature and the net water flow rate are also different. In cooling mode, the value range of K is 1.12~1.31, and the value range of a is 4.6~6. In heating mode, the value range of K is 1~1.73, and the value range of a is -17.5~-1.3.

[0047] As a preferred solution of this embodiment, obtaining the associated purified water flow rate when the purified water outlet temperature reaches the target temperature includes: Establish a model based on self-learning to associate the target temperature with the clean water flow rate and wastewater ratio; Obtain the associated parameters of direct drinking machines under several typical target temperature conditions to establish a data set, use the data set to train the model, and obtain a direct drinking machine model; According to the direct drinking machine model, the associated data of each target temperature, clean water flow rate, and waste water ratio are obtained. A corresponding mapping table of the target temperature, its associated clean water flow rate, and its associated waste water ratio is established for the direct drinking machine to control the temperature of the clean water cooling plate in the cooling or heating mode.

[0048] As a preferred solution of this embodiment, step S4 specifically includes: During the use phase, turn on the water outlet switch, and the water in the water purification module will flow into the water purification cooling plate after filtration. The control display module controls the refrigeration module to work at full power, and the temperature sensor collects the current water purification cooling plate temperature T i . Set the current water cooling plate temperature T i Compare with the calculated standard temperature of the clean water cooling plate to determine T i Is it equal to T is =K*T s +a.

[0049] When the temperature of the clean water cooling plate is equal to the standard temperature, it means that the temperature of the clean water cooling plate can adjust the clean water temperature to the target temperature. The current clean water flow rate is maintained, and the clean water module discharges water at the current wastewater ratio, that is, the associated wastewater ratio of the current target temperature. In cooling mode, the associated wastewater ratio ranges from 0.29 to 4, and in heating mode, the associated wastewater ratio ranges from 0.5 to 1.2.

[0050] When the temperature of the clean water cooling plate is not equal to the standard temperature, there are two cases, among which: When the temperature of the purified water cooling plate is higher than the standard temperature, the pressure of the purified water module is reduced, and the wastewater ratio is detected in real time until the current wastewater ratio is consistent with the associated wastewater ratio. The pressure regulation is stopped, and purified water is output at the current wastewater ratio. Drinking water of the target temperature is obtained after passing through the purified water cooling plate. When the temperature of the purified water cooling plate is lower than the standard temperature, the pressure of the purified water module is increased, and the wastewater ratio is detected in real time until the current wastewater ratio is consistent with the associated wastewater ratio. The pressure regulation is stopped, and purified water is output at the current wastewater ratio. Drinking water of the target temperature is obtained after passing through the purified water cooling plate.

[0051] By comparing the temperature of the purified water cooling plate with the standard temperature, if they are not equal, it means that the temperature of the purified water cooling plate under the current purified water flow cannot adjust the purified water temperature to the target temperature. By adjusting the pressure of the water purification module, the purified water flow is adjusted. The pressure is adjusted until the wastewater ratio of the direct drinking machine is equal to the associated wastewater ratio. Since the associated wastewater ratio and the associated purified water flow are obtained according to the target temperature, when the associated wastewater ratio is reached, that is, the purified water flow reaches the associated purified water flow, then the temperature of the purified water cooling plate at this time is equal to the standard temperature. Stop pressure regulation and output purified water at the current wastewater ratio. After the purified water reaches the target temperature through the temperature adjustment of the purified water cooling plate, it flows into the user's water container and the user can drink it directly. At the same time, sewage flows into the sewage cooling plate, takes away heat or cold, and is discharged to the drainage pipe through the drain outlet.

[0052] The direct drinking machine also includes a sterilization mode. In the sterilization mode, the refrigeration module heating function is directly used to achieve sterilization at any time in the standby state. The sterilization mode specifically includes the following processes: In the standby stage, the water purification cooling plate is heated to the sterilization temperature, the water outlet switch is turned on, the water flowing through the water purification cooling plate is heated and discharged, and the cooling or heating mode is restored after the sterilization mode ends.

[0053] The direct drinking machine uses the heating function of the refrigeration module to achieve sterilization at any time during the standby stage, avoiding the inconvenience and incomplete sterilization problems of traditional cold tank and compressor water purifiers. In order to avoid the problem of large-scale bacterial growth in the cold water in the water purifier water cooling plate, users can set it to timed sterilization according to their preferences, start the heating function of the refrigeration module at the set time, heat the temperature of the water purification water cooling plate to the sterilization temperature to achieve high-temperature sterilization. The sterilization temperature is a pre-set temperature, and the device turns on the water outlet switch. The water in the water purification module is filtered to form clean water that flows into the water purification water cooling plate. The cooling mode heats the clean water flowing through, and the high-temperature clean water flushes the water purification water cooling plate, pats off the dirt and discharges it. After the sterilization mode, the direct drinking machine is restored to the cooling mode or heating mode according to the target temperature to continue working.

[0054] This embodiment also includes a temperature control device for a cabinet direct drinking machine using a composite heat dissipation method, such as Figure 2 As shown, it includes a water purification module 1, a refrigeration module 2 and a control and display module 3. The water purification module 1 is connected to the input end of the refrigeration module through a pipeline, the output end of the refrigeration module is connected to the water outlet, and the control and display module 3 controls the connection to the refrigeration module 2.

[0055] like Figure 2 and Figure 3As shown, the refrigeration module 2 includes a clean water cooling plate 21 and a sewage cooling plate 22, and a first semiconductor cooling plate 23 and a second semiconductor cooling plate 24 are respectively arranged on both sides of the clean water cooling plate, and the first semiconductor cooling plate 23 and the second semiconductor cooling plate 24 are respectively in close contact with the side surfaces of the clean water cooling plate on the inner side, and the sewage cooling plate 22 is arranged on the outer side of the first semiconductor cooling plate 23, and a radiator 25 is arranged on the outer side of the second semiconductor cooling plate 24, and a fan 26 is arranged on one side of the radiator, and the fan covers the entire side of the radiator, and a temperature sensor 27 is arranged on the clean water cooling plate, and the control display module 3 is respectively connected to the fan 26 and the temperature sensor 27. The temperature sensor is used to detect the temperature of the clean water cooling plate, and the detected temperature is fed back to the control display module for temperature control of cooling or heating. In addition, a fan is installed on one side of the radiator. In the cooling mode, the fan works as a radiator to dissipate heat, and the fan is also controlled by the control display module. The water purification module 1 includes a water purification outlet and a sewage outlet. The water purification outlet is connected to the input end of the water purification water cooling plate 21 through a water purification pipeline. The output end of the water purification water cooling plate is connected to the water outlet. The sewage outlet is connected to the input end of the sewage water cooling plate 22 through a sewage pipeline. The output end of the sewage water cooling plate is connected to the drain. A water outlet switch 28 is provided on the water purification pipeline.

[0056] Room temperature water is stored in the water purification module. The water purification module 1 filters the water and separates it into purified water and sewage. The purified water is input to the purified water cooling plate 21 through the purified water pipeline, and the sewage is input to the sewage cooling plate 22 through the sewage pipeline, wherein a water outlet switch 28 is provided on the purified water pipeline. The refrigeration module 1 is used to cool or heat the purified water input to the purified water cooling plate 21. The control display module 3 is used to control the operation of the refrigeration module 2, and control the temperature of cooling or heating so that the purified water output is the set target temperature. The specific refrigeration module 2 uses a water cooling plate for heat exchange. The purified water is passed into the purified water cooling plate 21. The first semiconductor cooling plate 23 and the second semiconductor cooling plate 24 are respectively provided on both sides of the purified water cooling plate 21. The water cooling plate is cooled or heated from both sides. A sewage cooling plate is provided on the first semiconductor cooling plate 23 to take away heat or cold through sewage. A radiator 25 is provided on the second semiconductor cooling plate 24 to cool the second semiconductor cooling plate by air. The radiator uses a profile radiator to reduce costs. The device adopts two heat dissipation structures, namely sewage water cooling plate and radiator, and adopts composite heat dissipation with high heat dissipation efficiency.

[0057] As a preferred solution of this embodiment, a plurality of first semiconductor cooling sheets 23 and second semiconductor cooling sheets 24 are respectively arranged on both sides of the water purification water cooling plate 21, and four are preferably arranged in this embodiment. A first thermal insulation layer 29 is also respectively arranged on both sides of the water purification water cooling plate 21. The first thermal insulation layer 29 is in sheet shape, and its thickness is consistent with that of the semiconductor cooling sheet. A plurality of openings corresponding to the shape of the semiconductor cooling sheet are opened on the first thermal insulation layer. The first semiconductor cooling sheet 23 and the second semiconductor cooling sheet 24 are respectively embedded in the openings corresponding to the first thermal insulation layer 29. The first thermal insulation layer is installed on both sides of the water purification water cooling plate 21. The surfaces of the semiconductor cooling sheets are respectively attached to the surfaces of the water purification water cooling plate 21. Interface materials such as thermal conductive silicone grease, thermal conductive glue, graphite sheets or phase change materials are used at the attachment gap to provide thermal conductivity and reduce contact thermal resistance. A second insulation layer 210 is also arranged outside the combined structure of the clean water cooling plate 21 and the first insulation layer 29. The second insulation layer 210 is frame-shaped, and the middle of the second insulation layer is hollowed out. The hollow shape is the same as the combined structure of the clean water cooling plate 21 and the first insulation layer 29, and the height of the second insulation layer is equal to the height of the combined structure of the clean water cooling plate 21 and the first insulation layer 29. The combined structure of the water cooling plate and the first insulation layer is embedded in the hollow. The first insulation layer and the second insulation layer are combined to isolate the clean water cooling plate, the first semiconductor refrigeration plate, and the second semiconductor refrigeration plate from the outside to avoid heat conduction and the loss of coldness of the water cooling plate. The sewage cooling plate 22 is arranged on the second insulation layer 210 on the side where the first semiconductor 21 is located. One side of the sewage cooling plate 22 is bonded to the surface of the second insulation layer 210, that is, to the surface of the first semiconductor refrigeration plate 23, and an interface material is used at the bonding gap. The radiator 25 is arranged on the second insulation layer 210 on the side where the second semiconductor cooling sheet 23 is located. The radiator is attached to the surface of the second insulation layer 210, that is, attached to the surface of the second semiconductor cooling sheet 23. The interface material is also used in the gap. In this way, a multi-layer composite structure of radiator-interface material-second semiconductor cooling sheet-interface material-purified water cooling plate-interface material-first semiconductor cooling sheet-interface material-sewage water cooling plate is formed as a whole.

[0058] The clean water cooling plate 21 and the sewage cooling plate 22 have the same structure. Figure 4 As shown, the clean water cooling plate 21 and the sewage water cooling plate 22 are both plate-like structures, including an internal cavity, in which a number of staggered partitions 201 are arranged, and the partitions divide the cavity into a circuitous channel 202. The input and output ends of the water cooling plate are respectively arranged at both ends of the channel, and a plurality of heat exchange modules 203 are arranged in the channel, and the heat exchange modules include a plurality of fins 204 arranged along the water flow direction of the channel.

[0059] The clean water cooling plate and the sewage water cooling plate divide the internal cavity into circuitous channels through partitions, which increases the heat exchange path and can achieve efficient heat exchange. A plurality of heat exchange modules are arranged on the channels. The heat exchange modules are a plurality of fins arranged along the water flow direction. The upper and lower ends of the fins are respectively connected to the inner surface of the water cooling plate. Microchannels for water flow are formed between the fins. Multiple fins increase the heat exchange area and improve the heat exchange efficiency.

[0060] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0061] Although the water purification module, refrigeration module, control display module, first semiconductor refrigeration sheet, second semiconductor refrigeration sheet, and water purification cooling plate are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A temperature control method for a cabinet direct drinking machine using composite heat dissipation, characterized in that: include: Get the target temperature and set the working mode according to the target temperature; Pre-temperature adjustment of the purified water cooling plate during the standby stage; During the use phase, calculate the standard temperature of the clean water cooling plate when the clean water outlet temperature reaches the target temperature when the refrigeration module is working at full power; Get the current temperature of the water purification cooling plate and determine whether the temperature of the water purification cooling plate is equal to the standard temperature. When the clean water cooling plate temperature is equal to the standard temperature, water is discharged at the current waste water ratio; When the temperature of the clean water cooling plate is not equal to the standard temperature, the pressure is adjusted to achieve the associated wastewater ratio before water discharge.

2. According to the temperature control method of the cabinet direct drinking machine using composite heat dissipation according to claim 1, it is characterized by: The calculation of the standard temperature of the clean water cooling plate when the clean water outlet temperature reaches the target temperature when the refrigeration module is in full power working state includes: The associated clean water flow rate is obtained when the clean water outlet temperature reaches the target temperature, and the standard temperature of the clean water cooling plate under the associated clean water flow rate is calculated according to the target temperature, the convection heat transfer coefficient and the heat exchange area of ​​the clean water cooling plate.

3. The temperature control method of a cabinet direct drinking machine using composite heat dissipation according to claim 2 is characterized in that The step of obtaining the associated purified water flow rate when the purified water outlet temperature reaches the target temperature includes: Establish a model based on self-learning to associate the target temperature with the clean water flow rate and wastewater ratio; Obtain the associated parameters of direct drinking machines under several typical target temperature conditions to establish a data set, use the data set to train the model, and obtain a direct drinking machine model; According to the direct drinking machine model, the associated clean water flow rate and the associated wastewater ratio data of each target temperature are obtained.

4. The temperature control method of a cabinet direct drinking machine using composite heat dissipation according to claim 3 is characterized in that When the temperature of the clean water cooling plate is not equal to the standard temperature, the pressure is adjusted to achieve the associated wastewater ratio before discharging the water, including: When the temperature of the purified water cooling plate is not equal to the standard temperature, and the temperature of the purified water cooling plate is greater than the standard temperature, the pressure of the purified water module is reduced, and the wastewater ratio is detected in real time until the current wastewater ratio is consistent with the associated wastewater ratio, and the pressure regulation is stopped, and purified water is output at the current wastewater ratio, and drinking water of the target temperature is obtained after passing through the purified water cooling plate; When the temperature of the purified water cooling plate is not equal to the standard temperature, and the temperature of the purified water cooling plate is lower than the standard temperature, the pressure of the purified water module is increased, and the wastewater ratio is detected in real time until the current wastewater ratio is consistent with the associated wastewater ratio, and the pressure regulation is stopped, and purified water is output at the current wastewater ratio, and drinking water of the target temperature is obtained after passing through the purified water cooling plate.

5. A method for controlling the temperature of a cabinet direct drinking machine using composite heat dissipation according to claim 1, 2, 3 or 4, characterized in that: The setting of the working mode according to the target temperature includes: Get the current temperature of the water cooling plate, compare the target temperature with the temperature of the water cooling plate, When the target temperature is lower than the temperature of the purified water cooling plate, set the direct drinking machine to cooling mode. When the target temperature is greater than the temperature of the purified water cooling plate, set the direct drinking machine to heating mode.

6. The temperature control method of a cabinet direct drinking machine using composite heat dissipation according to claim 5 is characterized in that The pre-temperature adjustment of the purified water cooling plate in the standby stage includes: Set the preheating temperature in the working mode. In the standby stage, adjust the working voltage of the refrigeration module according to the target temperature, adjust the temperature of the purified water cooling plate to the preheating temperature and maintain it stable.

7. The temperature control method of a cabinet direct drinking machine using composite heat dissipation according to claim 6 is characterized in that Also included is a sterilization mode, which includes the following steps: In the standby stage, the water purification cooling plate is heated to the sterilization temperature, the water outlet switch is turned on, the water flowing through the water purification cooling plate is heated and discharged, and the cooling or heating mode is restored after the sterilization mode ends.

8. A temperature control device for a cabinet drinking machine using a composite heat dissipation method, implementing the method described in any one of claims 1 to 7, characterized in that: It includes a water purification module, a refrigeration module and a control and display module. The refrigeration module includes a water purification water cooling plate and a sewage water cooling plate. A first semiconductor refrigeration plate and a second semiconductor refrigeration plate are respectively arranged on both sides of the water purification water cooling plate. The sewage refrigeration plate is arranged on the first semiconductor refrigeration plate, and a radiator is arranged on the second semiconductor refrigeration plate. The water purification pipeline of the water purification module is connected to the input end of the water purification water cooling plate, and the output end of the water purification water cooling plate is connected to the water outlet. The sewage pipeline of the water purification module is connected to the input end of the sewage water cooling plate, and the output end of the sewage water cooling plate is connected to the drain. The control and display module is respectively controlled and connected to the first semiconductor refrigeration plate and the second semiconductor refrigeration plate.

9. The temperature control device for a cabinet drinking machine using a composite heat dissipation method according to claim 8 is characterized in that The refrigeration module also includes a fan, which is installed on the side of the radiator. A temperature sensor is arranged on the purified water cooling plate, and the control display module controls the fan and the temperature sensor respectively.

10. The temperature control device for a cabinet drinking machine using a composite heat dissipation according to claim 8 is characterized in that The clean water cooling plate and the sewage water cooling plate include an internal cavity, in which a plurality of staggered partitions are arranged, the partitions divide the cavity into a circuitous channel, the input end and the output end of the water cooling plate are respectively arranged at both ends of the channel, and a plurality of heat exchange modules are arranged in the channel, and the heat exchange modules include a plurality of fins arranged along the water flow direction of the channel.

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