Refrigeration water circulation system, control method thereof and water purifier

Abstract

The invention relates to a refrigeration water circulation system, a control method thereof and a water purifier. The refrigeration water circulation system comprises a compressor, an air suction pipe, a first water tank and a heat exchange water supplementing pipe. The air suction pipe communicates with an air suction port of the compressor. The first water tank has a first water replenishing port. The heat exchange water supplementing pipe communicates with the first water supplementing opening and makes heat conduction contact with the air suction pipe. According to the refrigeration water circulation system, water can be supplemented into the first water tank through the heat exchange water supplementing pipe. Meanwhile, water flowing to the first water tank through the heat exchange water supplementing pipe exchanges heat with the air suction pipe through the heat exchange water supplementing pipe in the flowing process. Therefore, on one hand, water in the heat exchange water supplementing pipe can serve as a heat exchange medium to increase the temperature of a refrigerant in the air suction pipe, and the probability that the temperature of the air return pipe is too low and the air suction pressure of the compressor is too low is reduced. And on the other hand, the temperature of water in the heat exchange water supplementing pipe is reduced after heat exchange with the air suction pipe, ice making and water refrigerating are facilitated, and the overall refrigerating efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water temperature adjustment, in particular to a refrigeration water circulation system, a control method thereof and a water purifier. BACKGROUND

[0002] Ice machines, cold water machines and water purifiers with ice making and refrigeration functions can produce low temperature through a compressor refrigeration system to cool water to a desired temperature or make ice cubes.

[0003] In such a system, the compressor is a core component, and its operating efficiency and reliability are directly related to the performance of the entire system. During operation, sometimes the refrigerant quantity is increased to improve the refrigeration capacity, which can cause the temperature of the return air pipe to be too low. When the temperature of the return air pipe is too low, the refrigerant in the evaporator can not evaporate enough, thereby reducing the refrigerant pressure at the suction end of the compressor. When the suction pressure is too low, the compression ratio of the compressor increases, causing the power consumption of the compressor to increase, and even the compressor can be damaged due to the high compression ratio, affecting the refrigeration efficiency. SUMMARY

[0004] Therefore, it is necessary to provide a refrigeration water circulation system and a control method thereof and a water purifier capable of improving refrigeration efficiency.

[0005] A refrigeration water circulation system comprises:

[0006] a compressor;

[0007] a suction pipe connected to a suction port of the compressor;

[0008] a first water tank having a first water supplement port;

[0009] a heat exchange water supplement pipe connected to the first water supplement port and in thermal contact with the suction pipe.

[0010] In one embodiment, the first water tank comprises a tank body and a partition plate.

[0011] The partition plate is arranged in the tank body and divides the space in the tank body into an ice water part and a cold water part. The first water supplement port is connected to the ice water part.

[0012] In one embodiment, the thermal conductivity of the partition plate is 0.03 W / (m·K)-0.045 W / (m·K).

[0013] In one embodiment, the refrigeration water circulation system further comprises a first temperature sensing element arranged in the ice water part and configured to detect the water temperature in the ice water part.

[0014] And / or, the cooling water circulation system further includes a second temperature sensing element, which is disposed in the cooling water section and used to detect the water temperature in the cooling water section.

[0015] In one embodiment, the chilled water circulation system further includes a first water level detection mechanism, which is located in the chilled water section and is used to detect the water level in the chilled water section;

[0016] And / or, the cooling water circulation system further includes a second water level detection mechanism, which is located in the cooling water section and is used to detect the water level in the cooling water section.

[0017] In one embodiment, the heat exchange water supply pipe is a metal pipe.

[0018] In one embodiment, the intake pipe includes an intake heat exchange section, and the heat exchange water supply pipe includes a water supply heat exchange section.

[0019] The water replenishment heat exchange section is parallel to and side by side with the air intake heat exchange section.

[0020] In one embodiment, the first water tank further has a second water inlet, which is connected to the cold water section;

[0021] The cooling water circulation system also includes a normal temperature water supply pipe, which is connected to the second water supply port and is spaced apart from the air intake pipe.

[0022] In one embodiment, the cooling water circulation system further includes a water replenishment solenoid valve, which includes an inlet, a first outlet, and a second outlet.

[0023] The first outlet is connected to the heat exchange water supply pipe, and the second outlet is connected to the ambient temperature water supply pipe; the first outlet and the second outlet are configured to be able to be selectively connected to the inlet.

[0024] A water purifier includes the aforementioned chilled water circulation system.

[0025] A control method for a chilled water circulation system, used to control the aforementioned chilled water circulation system, the control method comprising:

[0026] The operating status of the cooling water circulation system is obtained, and the ice water level in the ice water section, the cold water temperature in the cold water section, and the cold water level in the cold water section are detected.

[0027] Based on the operating status of the chilled water circulation system, the ice water level, the cold water temperature, and the cold water level, the heat exchange water supply pipe is controlled to supply water to the ice water section, or the ambient temperature water supply pipe is controlled to supply water to the cold water section.

[0028] The aforementioned chilled water circulation system, its control method, and the water purifier can replenish water to the first water tank using a heat exchange water supply pipe. Simultaneously, the water flowing into the first water tank through the heat exchange water supply pipe exchanges heat with the suction pipe during its flow. Thus, on the one hand, the water in the heat exchange water supply pipe can act as a heat exchange medium to increase the temperature of the refrigerant in the suction pipe, reducing the probability of excessively low return pipe temperature and excessively low compressor suction pressure. On the other hand, the water in the heat exchange water supply pipe decreases in temperature after exchanging heat with the suction pipe, which is more conducive to ice making and chilled water production, thereby improving overall refrigeration efficiency. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a partial structural diagram of a water purifier with a cooling water circulation system in one embodiment of this application.

[0031] Figure 2 for Figure 1 The diagram shows a cross-sectional structure of the water purifier.

[0032] Figure 3 for Figure 1 The diagram shows the structure of the water purifier from another angle.

[0033] Figure 4 for Figure 1 The diagram shows the structure of the water purifier from another angle.

[0034] Figure 5 This is a flowchart illustrating the control method of a cooling water circulation system in one embodiment of this application.

[0035] Explanation of reference numerals in the attached drawings: 100, Refrigeration water circulation system; 10, Compressor; 20, Suction pipe; 21, Suction heat exchange section; 30, First water tank; 32, Circulation water inlet; 33, Housing; 34, Partition plate; 35, Chilled water section; 36, Cold water section; 37, Second water inlet; 38, Cold water outlet; 40, Heat exchange water supply pipe; 41, Water supply heat exchange section; 60, Condenser assembly; 70, Evaporator assembly; 80. Circulating water pipe; 91. First temperature sensing element; 92. Second temperature sensing element; 101. First water level detection mechanism; 1011. First float; 1012. First liquid level proximity switch; 1013. Second liquid level proximity switch; 1014. Third liquid level proximity switch; 111. Water replenishment solenoid valve; 200. Water purifier; 210. Filter element; 220. Inlet water pipe; 230. Purified water pipe; 240. Wastewater pipe. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] Furthermore, where the term "and / or" appears, it merely describes the relationship between related objects and indicates that three relationships can exist. For example, A and / or B can represent the relationship between A and B: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates an "or" relationship between the related objects before and after it. Where the terms "first" and "second" appear, these terms are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature specified with "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, four, five, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0042] Please see Figures 1 to 4An embodiment of this application provides a refrigeration water circulation system 100, including a refrigeration subsystem and a water circulation subsystem. The refrigeration subsystem includes a compressor 10 and a suction pipe 20, and the water circulation subsystem includes a first water tank 30 and a heat exchange water supply pipe 40. The suction pipe 20 is connected to the suction port of the compressor 10. The first water tank 30 has a first water supply port. The heat exchange water supply pipe 40 is connected to the first water supply port and has thermal contact with the suction pipe 20.

[0043] To achieve its normal function, the refrigeration subsystem may also include basic components such as a condenser assembly 60, an evaporator assembly 70, and an expansion valve. The suction pipe 20 connects the evaporator assembly 70 to the compressor 10, which may be, but is not limited to, a variable frequency compressor. The water circulation subsystem may also include a water pump, a circulating water pump, and a circulating water pipe 80. The first water tank 30 also has a circulating water inlet 32, and the circulating water pipe 80 connects the circulating water inlet 32 ​​to the evaporator assembly 70. The water pump draws clean water and supplies it to the first water tank 30. The circulating water pump drives the water in the first water tank 30 to circulate between the evaporator assembly 70 and the first water tank 30 through the circulating water pipe 80, continuously exchanging heat with the evaporator assembly 70 to obtain ice water or chilled water, meeting the needs of ice making and drinking cold water. The first water tank 30 is a low-temperature water tank. The heat exchange water supply pipe 40 is used to replenish water to the first water tank 30 through the first water supply inlet.

[0044] In other words, the refrigeration subsystem and the water circulation subsystem are used to realize the refrigeration function and the water circulation function respectively, and the two parts are combined to complete the chilled water and / or ice making process.

[0045] Understandably, the chilled water circulation system 100 can be used in devices such as water purifiers 200, ice makers, and chillers. In one embodiment, the chilled water circulation system 100 is used in a water purifier 200, which accordingly has chilled water and / or ice-making functions.

[0046] The aforementioned chilled water circulation system 100 can replenish water to the first water tank 30 via the heat exchange water supply pipe 40. Simultaneously, the water flowing to the first water tank 30 through the heat exchange water supply pipe 40 exchanges heat with the suction pipe 20 during its flow. Thus, on the one hand, the water in the heat exchange water supply pipe 40 can act as a heat exchange medium to raise the temperature of the refrigerant in the suction pipe 20, reducing the probability of excessively low return pipe temperature and excessively low compressor suction pressure. On the other hand, the water in the heat exchange water supply pipe 40 decreases in temperature after heat exchange with the suction pipe 20, which is more conducive to ice making and chilled water production, thereby improving overall cooling efficiency. Furthermore, using water to raise the temperature of the suction pipe 20 does not require additional energy input, thus avoiding additional energy consumption or increased system complexity, and preventing any impact on overall energy efficiency.

[0047] In some embodiments, the first water tank 30 includes a tank body 33 and a partition plate 34. The partition plate 34 is disposed inside the tank body 33 and divides the space inside the tank body 33 into an ice water section 35 and a cold water section 36. A first water inlet is connected to the ice water section 35. The water in the ice water section 35 is used for ice making, and the water inside is ice water. The water in the cold water section 36 is used for drinking, and the water inside is cold water. Specifically, a circulating water inlet 32 ​​is connected to the ice water section 35, and the water volume in the ice water section 35 can be controlled to the amount of water used for ice making (2-3 plates).

[0048] Understandably, during ice making, the water in the ice water section 35 circulates between the evaporator assembly 70 and the first water tank 30, thus continuously decreasing in temperature. The water temperature in the cold water section 36 needs to be lowered by exchanging heat with the water in the ice water section 35 through the partition plate 34. Therefore, during the refrigeration process, the warm water in the ice water section 35 can be lower than the water temperature in the cold water section 36, that is, the ice water temperature is lower than the cold water temperature.

[0049] Compared to related technologies that do not distinguish between cold water and ice water, the partition 34 divides the space inside the cabinet 33 into two parts, separating the ice water used for ice making from the drinking water, each with a relatively independent space. This reduces the amount of ice water, lowers the difficulty of cooling the ice water, improves ice-making efficiency, and also ensures that users have an ample supply of drinking water.

[0050] In some embodiments, the thermal conductivity of the separator 34 is 0.03 W / (m·K)-0.045 W / (m·K).

[0051] In this way, the partition plate 34 can control the heat exchange rate between the cold water in the cold water section 36 and the ice water in the ice water section 35 within a reasonable range, which can meet the demand for drinking cold water without affecting the ice-making efficiency too much.

[0052] In some embodiments, the first water tank 30 further has a second water inlet 37, which is connected to the cold water section 36. The chilled water circulation system 100 also includes a normal temperature water supply pipe, which is connected to the second water inlet 37 and is spaced apart from the air intake pipe 20.

[0053] Thus, the chilled water circulation system 100 can replenish water to the first water tank 30 through both the heat exchange water supply pipe 40 and the ambient temperature water supply pipe. Specifically, the chilled water circulation system 100 can replenish water to the ice water section 35 through the heat exchange water supply pipe 40 to adapt to the lower temperature of the suction pipe 20 during ice making, thereby reducing the water replenishment temperature during ice making. The chilled water circulation system 100 can also replenish water to the cold water section 36 through the ambient temperature water supply pipe, ensuring that the cold water temperature is suitable for drinking. Accordingly, the water replenishment modes of the chilled water circulation system 100 include a low-temperature water replenishment mode using the heat exchange water supply pipe 40 and an ambient temperature water replenishment mode using the ambient temperature water supply pipe.

[0054] In some embodiments, the chilled water circulation system 100 further includes a water supply solenoid valve 111, which includes an inlet, a first outlet, and a second outlet. The first outlet is connected to the heat exchange water supply pipe 40, and the second outlet is connected to the normal temperature water supply pipe. The first outlet and the second outlet are configured to be selectively connected to the inlet.

[0055] The water replenishment solenoid valve 111 is a one-in-two-out solenoid valve. It can receive clean water from the inlet and allow the clean water to flow selectively to one of the first outlet and the second outlet, so as to replenish the ice water section 35 of the first water tank 30 through the heat exchange water replenishment pipe 40 or to replenish the cold water section 36 of the first water tank 30 through the normal temperature water replenishment pipe.

[0056] Thus, the cooling water circulation system 100 can control whether to replenish water and the replenishment mode by the opening and closing state of the water replenishment solenoid valve 111, which is beneficial to improving the automation of water replenishment in the first water tank 30.

[0057] Furthermore, the first water tank 30 also has a cold water outlet 38, which is connected to the cold water section 36 for supplying drinking cold water to the outside.

[0058] In some embodiments, the cooling water circulation system 100 further includes a first temperature sensing element 91, which is disposed in the ice water section 35 and is used to detect the water temperature inside the ice water section 35.

[0059] Thus, the first temperature sensor 91 can detect the temperature of the chilled water, and the chilled water circulation system 100 can adjust its operating parameters according to the temperature of the chilled water. At the same time, the chilled water circulation system 100 can also select a water replenishment mode based on the temperature of the chilled water.

[0060] In some embodiments, the cooling water circulation system 100 further includes a second temperature sensing element 92, which is disposed in the cold water section 36 and is used to detect the water temperature in the cold water section 36.

[0061] Thus, the second temperature sensor 92 can detect the cold water temperature, and the chilled water circulation system 100 can adjust its operating parameters according to the cold water temperature. Simultaneously, the chilled water circulation system 100 can also select a water replenishment mode based on the cold water temperature.

[0062] In some embodiments, the chilled water circulation system 100 further includes a first water level detection mechanism 101, which is disposed in the ice water section 35 and is used to detect the water level in the ice water section 35, i.e., the ice water level.

[0063] In some embodiments, the chilled water circulation system 100 further includes a second water level detection mechanism, which is disposed in the chilled water section 36 and is used to detect the water level in the chilled water section 36, i.e., the chilled water level.

[0064] Thus, the first water level detection mechanism 101 can detect the ice water level, and the chilled water circulation system 100 can control whether to replenish water to the ice water section 35 through the first water inlet based on the ice water level. Specifically, when the ice water level is lower than the first set water level, water replenishment is initiated to the ice water section 35. The second water level detection mechanism can detect the cold water level, and the chilled water circulation system 100 can control whether to replenish water to the cold water section 36 through the second water inlet 37 based on the cold water level. Specifically, when the cold water level is lower than the second set water level, water replenishment is initiated to the cold water section 36.

[0065] Specifically, the first water level detection mechanism 101 may include a first float 1011, a first liquid level proximity switch 1012, a second liquid level proximity switch 1013, and a third liquid level proximity switch 1014. The first liquid level proximity switches 1012, 1013, and 1014 are spaced apart in the height direction, with the first liquid level proximity switch 1012 higher than the second liquid level proximity switch 1013, and the second liquid level proximity switch 1013 higher than the third liquid level proximity switch 1014. The first float 1011 can reach the heights of the first liquid level proximity switches 1012, 1013, and 1014 along with the liquid level, respectively representing the full water state, the replenished water state, and the water shortage state in the ice water section 35.

[0066] Similarly, the second water level detection mechanism may include a second float, a fourth liquid level proximity switch, a fifth liquid level proximity switch, and a sixth liquid level proximity switch, which are spaced apart in the height direction, with the fourth liquid level proximity switch higher than the fifth liquid level proximity switch, and the fifth liquid level proximity switch higher than the sixth liquid level proximity switch. The float can reach the heights of the fourth, fifth, and sixth liquid level proximity switches along with the liquid level, respectively representing the full water state, the replenished water state, and the water shortage state in the cold water section 36.

[0067] In some embodiments, the heat exchange water supply pipe 40 is a metal pipe. In other words, the heat exchange water supply pipe 40 is made of metal.

[0068] Thus, the metal heat exchange water supply pipe 40 has good thermal conductivity and a wide temperature range.

[0069] In one embodiment, the heat exchange water supply pipe 40 is made of stainless steel. Stainless steel has advantages such as good corrosion resistance, high thermal conductivity, and low cost, which is beneficial for heat exchange water supply.

[0070] Understandably, in other embodiments, the metal material of the heat exchange water supply pipe 40 may also be copper, aluminum, etc., and no specific limitation is made here.

[0071] In some embodiments, the suction pipe 20 includes a suction heat exchange section 21, and the heat exchange water supply pipe 40 includes a water supply heat exchange section 41. The water supply heat exchange section 41 is parallel to and arranged side by side with the suction heat exchange section 21, and can be connected by welding.

[0072] In this way, the suction pipe 20 and the heat exchange water supply pipe 40 are at least partially fixed together, forming good heat exchange contact, which is conducive to heat exchange between the two.

[0073] In some other embodiments, the water replenishment heat exchange section 41 and the air intake heat exchange section 21 may also be in a spiral winding relationship, as long as they can be connected by welding to form a good thermal contact, and no specific limitation is made here.

[0074] The aforementioned refrigeration water circulation system 100 includes a refrigeration subsystem and a water circulation subsystem. The refrigeration subsystem includes components such as a variable frequency compressor, an evaporator assembly 70, and a condenser assembly 60. The water circulation subsystem consists of components such as a first water tank 30, a heat exchange water supply pipe 40, a water pump, a circulating water pump, a first temperature sensor 91, a second temperature sensor 92, a first water level detection mechanism 101, a second water level detection mechanism, and a partition plate 34. The heat exchange water supply pipe 40 is welded to the suction pipe 20, thereby achieving the convergence and influence between the water circulation subsystem and the refrigeration subsystem. Furthermore, during ice making, the circulating water flowing to the evaporator assembly 70 flows back to the ice water section 35. Since the ice water section 35 is separated from the cold water section 36 by a partition, the temperature of the ice water section 35 is kept lower than that of the cold water section 36, thus improving ice-making efficiency.

[0075] The water circulation subsystem has two water replenishment modes: ambient temperature water replenishment and low temperature water replenishment. In ambient temperature water replenishment mode, purified water is sent through the water replenishment solenoid valve 111 to the second water replenishment port 37 of the first water tank 30, entering its chilled water section 36 to complete the ambient temperature water replenishment. In low temperature water replenishment mode, the compressor 10 operates at its highest frequency to increase cooling efficiency. At this time, the temperature of the return gas pipe will drop, and the water replenishment solenoid valve 111 will switch, sending the replenishment water to the heat exchange water replenishment pipe 40. Through heat exchange with the return gas pipe, the water temperature is lowered and sent to the first water replenishment port to enter the chilled water section 35 of the first water tank 30. At the same time, after heat exchange, the temperature of the return gas pipe returns to the temperature of the compressor 10 at its normal frequency, ensuring the replenishment of chilled water while preventing the return gas temperature from dropping too low and damaging the compressor 10, thus extending the service life of the compressor 10 and reducing maintenance costs.

[0076] Thus, the chilled water circulation system 100 effectively optimizes the temperature of the return pipe, thereby optimizing the temperature of the compressor 10's suction port and improving ice-making efficiency. Correspondingly, through heat exchange via the heat exchange water supply pipe 40, the refrigerant temperature in the compressor 10 reaches near its optimal temperature, enhancing the overall performance of the refrigeration subsystem. The refrigerant absorbs heat more fully in the evaporator assembly 70 at a better temperature transition, improving the uniformity and efficiency of refrigeration in the entire evaporator assembly 70. Furthermore, the chilled water circulation system separates the ice water and cold water used for ice making through the partition plate 34, controlling the ice water usage to 2-3 plates. This ensures low-temperature ice water while significantly improving ice-making efficiency and ensuring users have sufficient cold water for drinking.

[0077] This application also provides a water purifier 200, which includes the aforementioned cooling water circulation system 100.

[0078] Understandably, the water purifier 200 also includes a conventional raw water tank, filter element 210, inlet pipe 220, purified water pipe 230, and wastewater pipe 240. The raw water tank is used to supply water to the filter element 210 through the inlet pipe 220, and purified water and wastewater are obtained under the filtration of the filter element 210. The purified water can be directed to the first water tank 30 through the purified water pipe 230 to produce drinking cold water or for making ice, while the wastewater can be discharged through the wastewater pipe 240.

[0079] In addition, to achieve the ice-making function, the water purifier 200 also includes an ice tray, an ice-removing solenoid valve, etc., which will not be described in detail here.

[0080] In some embodiments, the water purifier 200 further includes a second water tank, and a water purification pipe 230 connects to the second water tank. The water purification pipe 230 directs the purified water filtered by the filter element 210 to the second water tank. A water replenishment solenoid valve 111 is located between the second water tank and the first water tank 30. The water purification pipe 230 directs the purified water to the second water tank, and the second water tank then replenishes water to the first water tank 30 through the water replenishment solenoid valve 111 to produce drinking cold water or for ice making. In other words, the second water tank is a storage tank for storing purified water.

[0081] Please refer to the following: Figure 5 This application also provides a control method for a chilled water circulation system, used to control the aforementioned chilled water circulation system. The control method includes:

[0082] S200: Obtain the operating status of the chilled water circulation system and detect the ice water level in the ice water section, the cold water temperature in the cold water section 36, and the cold water level in the cold water section.

[0083] Understandably, the operating states of the chilled water circulation system include ice-making and non-ice-making states, with the non-ice-making state being the interval between ice-making and non-ice-making operations. The ice water level can be detected by a first water level detection mechanism, the chilled water temperature can be detected by a second temperature sensing element, and the chilled water level can be detected by a second water level detection mechanism.

[0084] S400, based on the working status of the chilled water circulation system, the ice water level, the chilled water temperature, and the chilled water level, controls the heat exchange water supply pipe to supply water to the ice water section or controls the ambient temperature water supply pipe to supply water to the chilled water section.

[0085] Understandably, controlling the supply of water from the heat exchange water supply pipe to the chilled water section or controlling the supply of water from the ambient temperature water supply pipe to the cold water section can be achieved by controlling the conductivity of the water supply solenoid valve.

[0086] The above-mentioned control method for the chilled water circulation system allows the chilled water circulation system to select the appropriate water replenishment mode for the first water tank based on the operating status of the chilled water circulation system, the ice water level, the chilled water temperature, and the chilled water level, in order to adapt to different operating conditions and improve the cooling efficiency of the system.

[0087] In some embodiments, step S400 includes:

[0088] If the chilled water circulation system is in ice-making mode, the ice water level is not lower than the first set water level, the cold water level is lower than the second set water level, and the cold water temperature is lower than the first set temperature, then the ambient temperature water supply pipe is controlled to supply water to the cold water section to the highest water level (i.e., full water state).

[0089] If the chilled water circulation system is in ice-making mode, the ice water level is not lower than the first set water level, the cold water level is lower than the second set water level, and the cold water temperature is higher than the first set temperature, then control the heat exchange water supply pipe to supply water to the ice water section until the cold water temperature is lower than the first set temperature or the ice water section is supplied with water to the highest water level.

[0090] If the chilled water circulation system is not in ice-making state and the ice water level is lower than the first set water level, the heat exchange water supply pipe is controlled to replenish the ice water section with a first set volume of water; wherein, the first set volume of water can be, but is not limited to, the amount of water for one ice plate.

[0091] If the chilled water circulation system is not in ice-making mode, and the chilled water level is lower than the first set water level and the cold water level is lower than the second set water level, then the heat exchange water supply pipe is controlled to supply water to the chilled water section until the maximum water level is reached. If the cold water temperature is lower than the first set temperature during the water supply process, then the system switches to control the ambient temperature water supply pipe to supply water to the cold water section, thereby dynamically replenishing the water until either the chilled water section or the cold water section reaches the maximum water level.

[0092] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A chilled water circulation system, characterized by, The refrigerated water circulation system comprises: a compressor (10); a suction pipe (20) connected to a suction port of the compressor (10); a first water tank (30) having a first water supplement port; a heat exchange water supplement pipe (40) connected to the first water supplement port and in heat conduction contact with the suction pipe (20).

2. The chilled water circulation system of claim 1, wherein, The first water tank (30) comprises a tank body (33) and a partition plate (34); the partition plate (34) is arranged in the tank body (33) and divides the space in the tank body (33) into an ice water part (35) and a cold water part (36); and the first water supplement port is connected to the ice water part (35).

3. The chilled water circulation system of claim 2, wherein, The thermal conductivity of the partition plate (34) is 0.03 W / (m·K)-0.045 W / (m·K).

4. The chilled water circulation system of claim 2, wherein, The refrigerated water circulation system further comprises a first temperature sensing element (91) arranged in the ice water part (35) and used for detecting the water temperature in the ice water part (35); and / or, the refrigerated water circulation system further comprises a second temperature sensing element (92) arranged in the cold water part (36) and used for detecting the water temperature in the cold water part (36).

5. The chilled water circulation system of claim 2, wherein, The refrigerated water circulation system further comprises a first water level detection mechanism (101) arranged in the ice water part (35) and used for detecting the water level in the ice water part (35); and / or, the refrigerated water circulation system further comprises a second water level detection mechanism arranged in the cold water part (36) and used for detecting the water level in the cold water part (36).

6. The chilled water circulation system of claim 1, wherein, The heat exchange water supplement pipe (40) is a metal pipe.

7. The chilled water circulation system of claim 1, wherein, The suction pipe (20) comprises a suction heat exchange section (21), and the heat exchange water supplement pipe (40) comprises a water supplement heat exchange section (41); the water supplement heat exchange section (41) is arranged in parallel with and side by side with the suction heat exchange section (21).

8. The chilled water circulation system according to any one of claims 2-7, wherein, The first water tank (30) further has a second water supplement port (37) connected to the cold water part (36); The refrigerated water circulation system further comprises a normal temperature water supplement pipe connected to the second water supplement port (37) and arranged in parallel with the suction pipe (20).

9. The chilled water circulation system of claim 8, wherein, The refrigerated water circulation system further comprises a water supplement electromagnetic valve (111) comprising a water inlet, a first water outlet and a second water outlet; the first water outlet is connected to the heat exchange water supplement pipe (40), and the second water outlet is connected to the normal temperature water supplement pipe; and the first water outlet and the second water outlet are configured to be able to be connected to the water inlet alternatively.

10. A water purifier characterized by comprising: The refrigerated water circulation system comprises:

11. A control method of a chilled water circulation system, characterized by, A control method for controlling the refrigerated water circulation system according to any one of claims 8 or 9, the control method comprising: acquiring the working state of the refrigerated water circulation system and detecting the ice water level of the ice water part, the cold water temperature of the cold water part and the cold water level of the cold water part; Based on the working state of the chilled water circulation system, the chilled water level, the chilled water temperature and the chilled water level, the heat exchange water supplement pipe is controlled to supplement water to the chilled water part or the normal temperature water supplement pipe is controlled to supplement water to the chilled water part.

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