Heat exchange system and control method thereof

Abstract

The invention relates to the technical field of water purification, and discloses a heat exchange system and a control method of the heat exchange system.The heat exchange system specifically comprises a heat exchange assembly, and the heat exchange assembly comprises at least one energy storage unit; the bidirectional convection heat exchange body is connected with the energy storage unit, and the energy storage unit transfers heat with a water source flowing through the bidirectional convection heat exchange body through the bidirectional convection heat exchange body. The pure water of the water path and the water source of the heat exchange water path are subjected to heat transfer through the two-way convection heat exchange body, and the requirement for temperature adjustment can be met without slowing down the water flow speed, so that the water production efficiency is improved, and the experience feeling of a user is improved.

Description

Technical Field

[0001] The present application relates to the field of water purification technology, and in particular to a heat exchange system and a control method thereof. Background Art

[0002] Water purification equipment is also called water purifier or water purifier. It is a water treatment equipment that deeply filters and purifies water according to the requirements of water use. With the continuous improvement of people's living standards, water purification equipment has been widely used.

[0003] In order to meet people's needs for pure water at different temperatures, modern water purifiers are not only equipped with refrigeration equipment (such as electronic ice tanks or compressors), but also with heating equipment (such as heat pipes) to meet people's pursuit of pure water at different temperatures. However, when preparing hot or cold water, the water flow rate needs to be slowed down to meet the temperature adjustment requirements. It can be seen that the water production efficiency of the current water purification system is poor. Summary of the invention

[0004] The present application proposes a heat exchange system and a water purifier, which are used to solve the technical problem of poor water production efficiency in the prior art, thereby improving the user experience.

[0005] In a first aspect, the present application provides a heat exchange system, comprising:

[0006] A heat exchange assembly, the heat exchange assembly comprising at least one energy storage unit;

[0007] A two-way convection heat exchanger is connected to the energy storage unit, and the energy storage unit transfers heat with a water source flowing through the two-way convection heat exchanger through the two-way convection heat exchanger.

[0008] Optionally, in some embodiments of the present application, the phase changer of the energy storage unit transfers heat with a water source flowing through the bidirectional convection heat exchanger through the bidirectional convection heat exchanger.

[0009] Optionally, in some embodiments of the present application, the heat exchange component includes a first energy storage unit and a second energy storage unit, and the first energy storage unit and / or the second energy storage unit transfers heat with a water source flowing through the bidirectional convection heat exchanger through the bidirectional convection heat exchanger.

[0010] Optionally, in some embodiments of the present application, the bidirectional convection heat exchange body includes a water inlet and a water outlet;

[0011] Wherein, the first energy storage unit and / or the second energy storage unit transfers heat with the water source flowing through the bidirectional convection heat exchange body through the water outlet, the water inlet and the circulating water circuit.

[0012] Optionally, in some embodiments of the present application, a first valve assembly and / or a second valve assembly is provided on the circulating water circuit, and the circulating water circuit includes a first branch and a second branch;

[0013] Wherein, the first branch is connected to the bidirectional convection heat exchange body through the first valve component and the water inlet, and / or the second branch is connected to the bidirectional convection heat exchange body through the second valve component and the water inlet.

[0014] Optionally, in some embodiments of the present application, when preparing mixed water, the first valve assembly is used to open the connection between the first branch and the hot water exchange circuit, and the second valve assembly is used to open the connection between the second branch and the hot water exchange circuit.

[0015] Optionally, in some embodiments of the present application, the replenishing water circuit is connected to the water inlet through the hot water exchange circuit, and the wastewater water circuit is connected to the water outlet through the hot water exchange circuit, wherein when the heat of the first energy storage unit and / or the second energy storage unit reaches a preset value, heat is discharged through the replenishing water circuit and the wastewater water circuit.

[0016] Optionally, in some embodiments of the present application, when heat exchange is performed, the first valve assembly is used to block the connection between the water replenishment water circuit and the hot water exchange water circuit, and the second valve assembly is used to block the connection between the wastewater water circuit and the hot water exchange water circuit; when water replenishment is performed, the first valve assembly is used to open the connection between the water replenishment water circuit and the hot water exchange water circuit.

[0017] Optionally, in some embodiments of the present application, the bidirectional countercurrent heat exchanger further includes a water pump, which is close to the second water inlet and disposed on the hot water exchange circuit.

[0018] Optionally, in some embodiments of the present application, the bidirectional countercurrent heat exchanger is a plate heat exchanger, a shell and tube heat exchanger, a shell and tube heat exchanger or a fin tube heat exchanger.

[0019] In a second aspect, a control method for a heat exchange system is provided, which is applied to the heat exchange system provided in any embodiment of the present application. The control method may specifically include:

[0020] In response to a water production operation for the heat exchange system, determining a water production temperature and a water production amount corresponding to the water production operation;

[0021] The heat exchange system is controlled according to the water production temperature and water production amount to prepare corresponding pure water.

[0022] As mentioned above, the present application provides a heat exchange system and a control method of the heat exchange system, the heat exchange system includes a heat exchange component, the heat exchange component includes a first energy storage unit and a second energy storage unit, the first energy storage unit is connected to the second energy storage unit through a circulating water circuit; a two-way convection heat exchange body, the heat exchange water circuit is connected to the first energy storage unit and the second energy storage unit through the two-way convection heat exchange body and the circulating water circuit; a water circuit, the pure water in the water circuit transfers heat between the water source of the heat exchange water circuit through the two-way convection heat exchange body. When making water, the heat exchange system provided by the present application transfers heat between the pure water in the water circuit through the two-way convection heat exchange body and the water source of the heat exchange water circuit, and the temperature control requirement can be met without slowing down the water flow rate, thereby improving the water production efficiency and further enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] in:

[0025] Figure 1 This is a water circuit structure diagram of a first embodiment of a heat exchange system provided in an embodiment of the present application;

[0026] Figure 2 This is a water circuit structure diagram of a second embodiment of the heat exchange system provided in the embodiments of the present application;

[0027] Figure 3 It is a water circuit structure diagram of a third embodiment of the heat exchange system provided in the embodiments of the present application;

[0028] Figure 4 This is a water circuit structure diagram of a fourth embodiment of the heat exchange system provided in the embodiments of the present application;

[0029] Figure 5 This is a water circuit structure diagram of a fifth embodiment of the heat exchange system provided in the embodiments of the present application;

[0030] Figure 6 It is a flow chart of a control method for a heat exchange system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known structures, methods, devices, implementations, materials or operations are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0033] In the present disclosure, unless otherwise clearly specified and limited, the terms "connected", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be an electrical connection, or it can communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0034] In addition, in the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist, such as A and / or B, which may indicate the existence of A alone, B alone, and the simultaneous existence of A and B. The symbol " / " generally indicates that the objects associated with each other are in an "or" relationship. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0035] See also Figure 1 , Figure 1It is a water circuit structure diagram of the first embodiment of the heat exchange system provided in the embodiments of the present application. The present application provides a heat exchange system, which includes a heat exchange component 10 and a bidirectional convection heat exchanger 20. The heat exchange component 10 includes at least one energy storage unit. The energy storage unit can be a unit integrating phase change materials or a heat tank. The specific selection can be made according to actual conditions. Furthermore, when the energy storage unit is a unit integrating phase change materials, the phase changer (i.e., phase change material) of the energy storage unit transfers heat with the water source flowing through the bidirectional convection heat exchanger 20 through the bidirectional convection heat exchanger 20.

[0036] Optionally, in some embodiments of the present application, the bidirectional countercurrent heat exchanger 20 is a plate heat exchanger, a shell and tube heat exchanger, a shell and tube heat exchanger or a fin and tube heat exchanger.

[0037] For further information, see Figure 2 The heat exchange component 10 of the present application includes a first energy storage unit 101 and a second energy storage unit 102, wherein the first energy storage unit 101 is connected to the second energy storage unit 102 via a circulating water circuit 40; a heat exchange water circuit 50 is connected to the first energy storage unit 101 and the second energy storage unit 102 via a bidirectional convection heat exchange body 20 and a circulating water circuit 40; and pure water in the water circuit 50 transfers heat to the water source of the heat exchange water circuit 50 via the bidirectional convection heat exchange body 20.

[0038] Optionally, in some embodiments of the present application, the first energy storage unit 101 is used to reduce the temperature of the fluid, such as absorbing heat in a refrigeration system to cool the fluid. A first phase changer, such as a refrigerant, may be provided in the first energy storage unit 101, and the first phase changer absorbs heat during evaporation, thereby reducing the temperature of the water flowing through the cold water branch. For example, the fluid enters the first energy storage unit 101 and exchanges heat with the phase changer. If the system is in refrigeration mode, the temperature of the fluid will drop due to the evaporation of the phase changer. The first energy storage unit 101 is connected to the second energy storage unit 102 through a circulating water circuit 40 to form a closed circulation system. The second energy storage unit 102 is used to heat the fluid and provide the required heat to increase the temperature of the fluid, such as releasing heat in a heating system to increase the temperature of the fluid. A heating element or other heat sources, such as steam or high-temperature water, can be used to heat the water flowing through the hot water branch. Optionally, in some embodiments of the present application, a second phase changer may be provided in the second energy storage unit 102, and the second phase changer releases heat during condensation, thereby heating the surrounding fluid to achieve heating of the water source. For example, the second energy storage unit 102 is designed to use a phase changer (such as a refrigerant or other heat medium) to release heat during the condensation process for heating the fluid. When the fluid flows through the second energy storage unit 102, it absorbs heat through heat exchange with the phase changer or other heat source, thereby increasing the temperature. The second energy storage unit 102 is connected to the first energy storage unit 101 through the circulating water circuit 40 to form a closed circulation system, so that the fluid can circulate between the two energy storage units.

[0039] It should be noted that a phase changer generally refers to a medium in which a substance can change from one phase (such as solid, liquid or gas) to another phase under certain temperature and pressure conditions. In energy storage units, the use of phase changers can significantly improve the efficiency and effectiveness of heat exchange. Phase changers absorb or release a large amount of heat during the phase change process, and this heat is called the latent heat of phase change. This makes phase changers very effective in the heat exchange process. In a refrigeration system, a phase changer (such as a refrigerant) evaporates in the evaporator, absorbs heat, and thus reduces the temperature. In the condenser, the phase changer condenses, releasing heat, thereby heating the surrounding fluid.

[0040] The bidirectional convection heat exchanger 20 can be composed of a series of thin plates arranged in parallel, and these plates are usually made of stainless steel, titanium or other corrosion-resistant materials. A plurality of flow channels are formed between the plates, and the fluid flows in these flow channels and performs heat exchange. Due to the close arrangement of the plates, the bidirectional convection heat exchanger 20 has a small volume and weight, which is suitable for applications with limited space. That is, it can be understood that the heat exchange system of the present application can be integrated in a small-sized water purification device. The high thermal conductivity of the plates and the high flow rate of the fluid in the flow channel make the bidirectional convection heat exchanger 20 have a high heat exchange efficiency. It can be understood that the high thermal efficiency of the bidirectional convection heat exchanger can reduce the energy required for heating or cooling, thereby saving energy. In addition, combined with the first energy storage unit 101 and the second energy storage unit 102 of the present application, it can efficiently meet different temperature regulation requirements while maintaining the flexibility and energy saving of the system.

[0041] Optionally, in some embodiments of the present application,

[0042] The water circuit 30 is responsible for transporting the untreated or treated water to the corresponding part of the system for further purification or heating / cooling treatment. The water circuit 30 may include a water inlet and a water outlet to allow water to flow into and out of the two-way convection heat exchanger 20. The water in the water circuit 30 can be heated or cooled as needed to meet specific application requirements, such as drinking, washing, industrial processes, etc. The water circuit 30 may include water quality monitoring equipment to ensure that the purity and quality of the water meet the expected standards. The flow of the water circuit 30 can also be adjusted by control elements such as water pumps and valves to meet different processing requirements.

[0043] It should be noted that the first energy storage unit 101 and / or the second energy storage unit 102 transfers heat with the water source flowing through the bidirectional countercurrent heat exchanger 20 through the water outlet, the water inlet and the circulating water path 40 .

[0044] In a heat exchange system, improving the heat exchange efficiency of water in an energy storage unit is an important design goal. There are several methods to increase the heat exchange time of water in an energy storage unit (such as the first energy storage unit 101 and the second energy storage unit 102), thereby improving the heat exchange efficiency, as follows:

[0045] Designing the water path in the energy storage unit as a multi-branch structure can increase the flow path and flow rate of the fluid in the energy storage unit, thereby extending the contact time between the fluid and the energy storage unit and improving the heat exchange efficiency. In the multi-branch structure, the fluid is divided and merged multiple times inside the energy storage unit, increasing the surface area and time of heat exchange.

[0046] Designing the water path in the energy storage unit as a long path structure, such as a U-shaped structure, can extend the flow distance of the fluid in the energy storage unit. The long path structure allows the fluid to have more time and opportunities to contact the heat exchange surface in the energy storage unit, thereby improving the efficiency of heat exchange.

[0047] By optimizing the flow channel design, such as increasing the tortuosity of the flow channel or adjusting the cross-sectional shape of the flow channel, the flow characteristics of the fluid can be changed, turbulence can be increased, and the heat transfer effect can be improved.

[0048] Using a fluid distributor or flow divider, the fluid can be distributed more evenly to various parts of the energy storage unit, ensuring sufficient heat exchange.

[0049] Optionally, in some embodiments of the present application, in order to increase the heat exchange time of the water source in the energy storage unit (such as the first energy storage unit 101 and the second energy storage unit 102), the water path set in the energy storage unit (such as the first energy storage unit 101 and the second energy storage unit 102) can be set to a multi-branch structure, such as Figure 3 As shown; it can also be set to a long path structure, such as a U-shaped structure, which can be set specifically according to actual conditions.

[0050] For further information, please refer to Figure 4 The bidirectional convection heat exchanger 20 of the present application includes a first water inlet 201, a second water inlet 202, a first water outlet 203 and a second water outlet 204, wherein the heat exchange circuit 50 is connected to the first energy storage unit 101 and the second energy storage unit 102 through the second water inlet 202, the second water outlet 204 and the circulating water circuit 40, and heat is transferred between the water circuit 30 and the water source of the heat exchange circuit 50 through the first water inlet 201 and the first water outlet 203.

[0051] Among them, the circulating water circuit 40 connects the first energy storage unit 101 and the second energy storage unit 102 to form a closed circulation system. The circulating water circuit 40 connects the first energy storage unit 101 and the second energy storage unit 102, so that the fluid in the hot water exchange circuit 50 can circulate between the two energy storage units. The design of the circulating water circuit 40 ensures the continuous flow and temperature regulation of the fluid. In the bidirectional convection heat exchange body 20, the fluid in the hot water exchange circuit 50 exchanges heat with the pure water in the water circuit 30 through the plates. This design allows the pure water to adjust its temperature through heat transfer without direct contact with the fluid in the hot water exchange circuit 50.

[0052] The water path 30 is connected to the bidirectional countercurrent heat exchange body through a specific water inlet (such as the first water inlet 201) and a water outlet (such as the first water outlet 203).

[0053] Optionally, in some embodiments, see Figure 4A first valve assembly 601 and / or a second valve assembly 602 are provided on the circulating water circuit 40, and the circulating water circuit 40 includes a first branch 401 and a second branch 402, wherein the first branch 401 is connected to the bidirectional convection heat exchange body 20 through the first valve assembly 601 and the second water inlet 202, and / or the second branch 402 is connected to the bidirectional convection heat exchange body 20 through the second valve assembly 602 and the second water outlet 204.

[0054] Among them, the first valve component 601 is located on the first branch 401 of the circulating water circuit 40 to control the flow of the first branch. It is connected to the two-way convection heat exchanger 20 through the second water inlet 202, allowing the fluid (the water source in the circulating water circuit 40) to enter the two-way convection heat exchanger for heat exchange. The second valve component 602 is located on the second branch 402 of the circulating water circuit 40 to control the flow of the second branch 402. It is connected to the two-way convection heat exchanger 20 through the second water outlet 204, allowing the fluid to flow out of the two-way convection heat exchanger. The first branch 401 is connected to the two-way convection heat exchanger 20 through the first valve component 601. The fluid enters the two-way convection heat exchanger 20 through the first branch 401 and performs heat exchange with the pure water in the water circuit 30. The second branch 402 is connected to the two-way convection heat exchanger 20 through the second valve component 602. The fluid flows out of the two-way convection heat exchanger 20 through the second branch 402 to complete the heat exchange process.

[0055] The first valve component can be a variety of valves, such as ball valves: ball valves control the flow of fluid by rotating the ball, and have the characteristics of low flow resistance and fast switching; butterfly valves: butterfly valves control the flow of fluid by rotating the butterfly plate, with a simple structure, small size and light weight; gate valves: gate valves control the flow of fluid by lifting the gate plate, and are suitable for occasions with high pressure or where the flow needs to be completely cut off; stop valves: stop valves control the flow of fluid by lifting the valve disc, and are often used in occasions where precise flow control is required; check valves: check valves allow fluid to flow in one direction to prevent backflow, and are often used to protect pumps and prevent Water hammer effect; Control valve: The control valve can accurately control the flow of fluid and is suitable for systems that need to adjust temperature or pressure; Solenoid valve: The solenoid valve controls the opening and closing of the valve through the electromagnetic coil, has a fast response speed, and is often used in automated control systems; Diaphragm valve: The diaphragm valve uses a flexible diaphragm to control the flow of fluid and is suitable for occasions with high requirements for cleanliness; Safety valve: The safety valve automatically discharges fluid when the pressure exceeds the set value to protect the system from overpressure damage; Needle valve: The needle valve controls the flow of fluid by rotating the needle valve core and is often used in laboratories or occasions where small flows need to be accurately controlled.

[0056] In the heat exchange system, if it is necessary to supplement fresh water to the system in the water replenishment mode, a butterfly valve or a ball valve may be used as the first valve component 601 to facilitate rapid opening and closing of the water replenishment water path 70 .

[0057] If the heat exchange system needs to accurately control the amount of fluid flowing into the second energy storage unit 102 when preparing hot water, a regulating valve may be used as the first valve component 601 to adjust the flow rate and maintain a constant heating efficiency.

[0058] If the heat exchange system is designed to work under high pressure, a stop valve or a gate valve may be selected as the first valve component 601 to better withstand the high pressure.

[0059] Similarly, the second valve assembly 602 can also be implemented in the same manner, which will not be elaborated herein.

[0060] It is connected to the circulating water circuit 40 through the second water inlet 202 and the second water outlet 204 to form a closed loop. The fluid circulates in the hot water circuit 50, and the temperature is adjusted by the first energy storage unit 101 and the second energy storage unit 102. The pure water in the water circuit 30 exchanges heat with the fluid in the hot water circuit 50 through the two-way convection heat exchange body 20, thereby adjusting its temperature. The fluid circulates in the circulating water circuit 40, and the flow rate entering and flowing out of the two-way convection heat exchange body 20 is controlled by the first valve assembly 601 and the second valve assembly 602. Specifically, in the two-way convection heat exchange body 20, the fluid in the hot water circuit 50 exchanges heat with the pure water in the water circuit 30 to achieve temperature adjustment.

[0061] Optionally, in some embodiments of the present application, when preparing cold water, the first valve assembly 601 is used to conduct the connection between the first branch 401 and the hot water exchange circuit 50, and the second valve assembly 602 is used to block the connection between the second branch 402 and the hot water exchange circuit 50. Specifically, when preparing cold water, the fluid (the water source in the circulating water circuit 40) enters the two-way convection heat exchange body 20 through the first branch 401, exchanges heat with the first energy storage unit 101, and reduces the temperature. The second valve assembly 602 blocks the second branch 402 to prevent the fluid from passing through the second energy storage unit 102 to avoid heating.

[0062] Optionally, in some embodiments of the present application, when preparing hot water, the first valve assembly 601 is used to block the connection between the first branch 401 and the hot water exchange circuit 50, and the second valve assembly 602 is used to conduct the connection between the second branch 402 and the hot water exchange circuit 50. Specifically, when preparing hot water, the second branch 402 is conducted, and the fluid enters the two-way convection heat exchange body 20 through it. The fluid enters the two-way convection heat exchange body 20 through the second branch 402, and exchanges heat with the second energy storage unit 102, thereby heating the fluid. The hot water exchange circuit 50 is connected to the circulating water circuit 40 through the second water inlet 202 and the second water outlet 204, forming a closed loop. When preparing hot water, the fluid circulates in the hot water exchange circuit 50, exchanges heat with the second energy storage unit 102, and the pure water exchanges heat with the fluid in the hot water exchange circuit 50 through the two-way convection heat exchange body 20, thereby increasing the temperature of the pure water.

[0063] Optionally, in some embodiments of the present application, when preparing mixed water, the first valve assembly 601 is used to conduct the connection between the first branch 401 and the hot water exchange circuit 50, and the second valve assembly 602 is used to conduct the connection between the second branch 402 and the hot water exchange circuit 50. Specifically, when preparing mixed water, the first valve assembly 601 is used to conduct the connection between the first branch 401 and the hot water exchange circuit 50. This means that the fluid can enter the two-way convection heat exchange body 20 through the first branch 401, and perform heat exchange with the first energy storage unit 101, and can also perform heat exchange with the second energy storage unit 102. The second valve assembly 602 is used to conduct the connection between the second branch 402 and the hot water exchange circuit 50. This allows the fluid to enter the two-way convection heat exchange body 20 through the second branch 402 and perform heat exchange with the second energy storage unit 102. The pure water in the water circuit 30 performs heat exchange with the water source of the hot water exchange circuit 50 through the first water inlet 201 and the first water outlet 203, thereby adjusting the pure water temperature.

[0064] It should be noted that the temperature of the fluid in the heat exchange circuit 50 can be controlled by adjusting the heat exchange effect of the first energy storage unit 101 and the second energy storage unit 102, thereby controlling the temperature of the mixed water.

[0065] Optionally, in some embodiments of the present application, please refer to Figure 5 The replenishment waterway 70 is connected to the second water inlet 202 through the hot water exchange circuit 50 , and the wastewater waterway 80 is connected to the second water outlet 204 through the hot water exchange circuit 50 .

[0066] The water replenishment water circuit 70 is responsible for replenishing water to the system to ensure that there is sufficient water in the system and maintain the normal operation of the system. The water replenishment water circuit 70 is connected to the second water inlet 202 through the hot water exchange circuit 50. This means that the water in the water replenishment water circuit 70 can directly enter the hot water exchange circuit 50 and eventually enter the two-way countercurrent heat exchange body 20 through the second water inlet 202. The water in the water replenishment water circuit 70 can enter the hot water exchange circuit 50 through the second water inlet 202. The wastewater water circuit 80 is responsible for discharging wastewater or unnecessary water in the system to maintain the cleanliness and efficiency of the system. The wastewater water circuit 80 is connected to the second water outlet 204 through the hot water exchange circuit 50. This means that the wastewater in the system can pass through the hot water exchange circuit 50 and eventually be discharged through the second water outlet 204.

[0067] Optionally, in some embodiments of the present application, when heat exchange is performed, the first valve assembly 601 is used to block the connection between the make-up water circuit 70 and the hot water exchange circuit 50, and the second valve assembly 602 is used to block the connection between the waste water circuit and the hot water exchange circuit; when water replenishment is performed, the first valve assembly 601 is used to open the connection between the make-up water circuit 70 and the hot water exchange circuit 50.

[0068] When heat exchange is performed, the first valve assembly 601 is used to block the connection between the water supply waterway 70 and the hot water exchange waterway 50. The water in the water supply waterway 70 will not be introduced into the hot water exchange waterway 50, ensuring that the fluid in the hot water exchange waterway 50 can perform heat exchange without interference. At the same time, the second valve assembly 602 is used to block the connection between the waste water waterway 80 and the hot water exchange waterway 50. The waste water in the waste water waterway 80 is prevented from flowing back into the hot water exchange waterway 50, ensuring that the fluid in the hot water exchange waterway 50 remains clean and effective during the heat exchange process.

[0069] For example, in the heat exchange mode, the system needs to prepare hot water, the first valve assembly 601 and the second valve assembly 602 are both closed, the fluid circulates in the heat exchange circuit 50, is heated by the second energy storage unit 102, and then transfers the heat to the water in the water circuit 30 through the two-way convection heat exchange body 20. When the amount of water in the system decreases due to use and water replenishment is required, the system switches to the water replenishment mode, the first valve assembly 601 opens, and the fresh water source in the water replenishment water circuit 70 is introduced into the heat exchange circuit 50 to replenish the water in the system. At this time, the second valve assembly 602 is still closed to prevent wastewater from flowing back. Through this intelligent valve control, the heat exchange system can flexibly switch between heat exchange and water replenishment modes to ensure the stable operation of the system and the satisfaction of water demand.

[0070] When replenishing water, the first valve assembly 601 is used to conduct the connection between the replenishing water circuit 70 and the hot water exchange circuit 50, allowing the water in the replenishing water circuit 70 to enter the hot water exchange circuit 50, replenishing the water in the system, and ensuring that the system has enough water for heat exchange during the heat exchange process. The replenishing water circuit 70 is connected to the hot water exchange circuit 50 through the first valve assembly 601, and the water in the replenishing water circuit 70 can directly enter the hot water exchange circuit 50, and finally enter the two-way countercurrent heat exchange body 20 through the second water inlet 202. The state of the second valve assembly 602 does not affect the replenishing process, so it can be kept closed to prevent wastewater from flowing back.

[0071] For example, the heat exchange system is used to adjust the temperature of cooling water: after a day's operation, the heat exchange system detects that the amount of cooling water has decreased and needs to be replenished. At this time, the first valve assembly 601 is opened, and the replenishment water circuit 70 begins to replenish fresh water to the heat exchange water circuit 50. The water in the replenishment water circuit 70 flows into the two-way convection heat exchange body 20 through the second water inlet 202 and mixes with the fluid in the heat exchange water circuit 50. The second valve assembly 602 remains closed to ensure that waste water does not flow back into the clean water after replenishment. After the replenishment reaches a predetermined level, the controller closes the first valve assembly 601 and ends the replenishment process. Through such a replenishment process, the heat exchange system ensures a continuous and stable supply of water to meet the heat exchange needs.

[0072] In the water replenishment mode, the wastewater waterway 80 can remain closed to prevent wastewater from interfering with the water replenishment process.

[0073] For example, when the heat exchange system is started, the fluid in the heat exchange circuit 50 begins to flow. Assuming that hot water needs to be prepared, the first valve assembly 601 is closed to block the cooling function of the first energy storage unit 101; the second valve assembly 602 is opened to allow the fluid to flow into the second energy storage unit 102 for heating. The fluid enters the second energy storage unit 102 through the circulating water circuit 40, absorbs heat here, and then enters the two-way convection heat exchange body 20 through the second water outlet 204. In the two-way convection heat exchange body 20, the heated fluid and the pure water in the water circuit 30 exchange heat through the plates. The pure water absorbs the heat of the heat exchange fluid and the temperature rises. The heat exchange system adjusts the heating intensity of the second energy storage unit 102 or the flow rate of the fluid according to the real-time temperature feedback of the pure water in the water circuit 30 to ensure that the pure water reaches the required temperature. If cold water needs to be prepared, the operation is reversed. The first valve assembly 601 is opened to allow the fluid to flow into the first energy storage unit 101 for cooling; the second valve assembly 602 is closed to block the heating function of the second energy storage unit 102. The water supply circuit 70 is connected to the heat exchange circuit 50 through the first valve assembly 601 to replenish fresh water to the system. The wastewater circuit 80 is connected to the heat exchange circuit 50 through the second valve assembly 602 to discharge used or unnecessary water from the system. The heat exchange system can also monitor and adjust parameters such as temperature, pressure, and flow in real time through sensors and controllers installed at various key points to ensure the stable operation of the system. For example, in medical facilities, pure water at a specific temperature is required for surgery or cleaning equipment. Through the above system, pure water at a suitable temperature can be quickly adjusted and provided according to demand.

[0074] Optionally, in some embodiments of the present application, Figure 5 As shown, the bidirectional countercurrent heat exchange body 20 further includes a water pump 203 , which is close to the second water inlet 202 and is disposed on the water exchange circuit 50 .

[0075] The location of the water pump 203 helps to provide power at the starting point of the hot water exchange circuit 50 to push the fluid through the entire circulation system. In the water replenishment mode, the water replenishment circuit 70 is connected to the hot water exchange circuit 50 through the first valve assembly 601, and the water pump 203 helps to introduce water in the water replenishment circuit 70 into the hot water exchange circuit 50. In the waste discharge mode, the waste water circuit 80 is connected to the hot water exchange circuit 50 through the second valve assembly 602, and the water pump 203 helps to discharge waste water from the hot water exchange circuit 50.

[0076] The above is the heat exchange system provided in this application.

[0077] As can be seen from the above, the heat exchange system includes a heat exchange component, and the heat exchange component 10 includes a first energy storage unit 101 and a second energy storage unit 102, the first energy storage unit is connected to the second energy storage unit through a circulating water circuit; a two-way convection heat exchange body 20, and the hot water exchange circuit 50 is connected to the first energy storage unit 101 and the second energy storage unit 102 through the two-way convection heat exchange body 20 and the circulating water circuit; a water circuit 30, and the pure water in the water circuit 30 is heat-transferred between the two-way convection heat exchange body 20 and the water source of the hot water exchange circuit 50. In the heat exchange system provided in the present application, when making water, the pure water in the water circuit 30 is heat-transferred between the two-way convection heat exchange body 20 and the water source of the hot water exchange circuit 50, and the temperature adjustment requirement can be met without slowing down the water flow rate, thereby improving the water production efficiency and further improving the user experience.

[0078] Accordingly, the present application also provides a control method for a heat exchange system, such as Figure 6 As shown, the control method is applied to the heat exchange system of any embodiment of the present application, and the specific process is as follows:

[0079] S101. In response to a water production operation on a heat exchange system, determine a water production temperature and a water production amount corresponding to the water production operation.

[0080] For example, specifically, the required pure water temperature and water production volume are determined according to user needs or system presets.

[0081] The operation modes of the first energy storage unit and the second energy storage unit are set according to the requirements to ensure that the outlet water temperature meets the requirements, such as adjusting the conduction or disconnection of the first valve component and the second valve component to control the fluid flow direction and heat exchange efficiency.

[0082] S102, controlling the heat exchange system to prepare corresponding pure water according to the water production temperature and water production amount.

[0083] For example, specifically, according to the determined water production volume, the heat exchange system is controlled to start the water pump to promote the circulation of the fluid in the heat exchange water circuit. According to the requirements of the water production temperature, the first valve assembly and the second valve assembly are adjusted to control the flow direction of the fluid. For example, when preparing cold water, the second branch needs to be blocked; when preparing hot water, the second branch needs to be opened. Through the two-way convection heat exchanger, the fluid in the heat exchange water circuit is controlled to exchange heat with the pure water in the water circuit. Ensure that the fluid in the heat exchange water circuit circulates effectively between the first energy storage unit and the second energy storage unit to achieve the required heat exchange.

[0084] Optionally, in some embodiments of the present application, a water quality monitoring device can be installed in the waterway to ensure that the prepared pure water meets the quality standards. Specifically, system parameters such as temperature, flow rate, etc. can be adjusted according to the monitoring results to ensure water quality. Finally, according to the actual operation situation, the system control strategy is continuously optimized to improve the efficiency and stability of the system.

[0085] As can be seen from the above, the control method of the heat exchange system provided in the present application, in response to the water production operation of the heat exchange system, determines the water production temperature and water production volume corresponding to the water production operation, and then controls the heat exchange system to prepare corresponding pure water according to the water production temperature and water production volume. Using the heat exchange system provided in the embodiment of the present application, when making water, the pure water in the water circuit transfers heat between the two-way convection heat exchanger and the water source of the heat exchange circuit, and the temperature control requirement can be met without slowing down the water flow rate, thereby improving the water production efficiency and further enhancing the user experience.

[0086] The present application also provides a water purifier (not shown in the drawings), which includes a heat exchange system. The specific structure of the heat exchange system refers to the above-mentioned embodiment. Since the water purifier proposed in the present application adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0087] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A heat exchange system, characterized in that: include: A heat exchange assembly, the heat exchange assembly comprising at least one energy storage unit; A two-way convection heat exchanger is connected to the energy storage unit, and the energy storage unit transfers heat with a water source flowing through the two-way convection heat exchanger through the two-way convection heat exchanger.

2. The heat exchange system according to claim 1, characterized in that: The phase changer of the energy storage unit transfers heat with the water source flowing through the bidirectional convection heat exchanger through the bidirectional convection heat exchanger.

3. The heat exchange system according to claim 1, characterized in that: The heat exchange assembly includes a first energy storage unit and a second energy storage unit. The first energy storage unit and / or the second energy storage unit transfers heat with a water source flowing through the bidirectional convection heat exchange body through the bidirectional convection heat exchange body.

4. The heat exchange system according to claim 3, characterized in that: The bidirectional convection heat exchange body comprises a water inlet and a water outlet; Wherein, the first energy storage unit and / or the second energy storage unit transfers heat with the water source flowing through the bidirectional convection heat exchange body through the water outlet, the water inlet and the circulating water circuit.

5. The heat exchange system according to claim 4, characterized in that: The circulating water circuit is provided with a first valve assembly and / or a second valve assembly, and the circulating water circuit includes a first branch and a second branch; Wherein, the first branch is connected to the bidirectional convection heat exchange body through the first valve component and the water inlet, and / or the second branch is connected to the bidirectional convection heat exchange body through the second valve component and the water inlet.

6. The heat exchange system according to claim 5, characterized in that: When preparing cold water, the first valve assembly is used to conduct the connection between the first branch and the hot water exchange circuit, and the second valve assembly is used to block the connection between the second branch and the hot water exchange circuit.

7. The heat exchange system according to claim 5, characterized in that: When preparing hot water, the first valve component is used to block the connection between the first branch and the hot water exchange circuit, and the second valve component is used to open the connection between the second branch and the hot water exchange circuit.

8. The heat exchange system according to claim 5, characterized in that: When preparing mixed water, the first valve assembly is used to conduct the connection between the first branch and the hot water exchange circuit, and the second valve assembly is used to conduct the connection between the second branch and the hot water exchange circuit.

9. The heat exchange system according to claim 5, characterized in that: The replenishment water circuit is connected to the water inlet through the heat exchange water circuit, and the wastewater water circuit is connected to the water outlet through the heat exchange water circuit, wherein when the heat of the first energy storage unit and / or the second energy storage unit reaches a preset value, heat is discharged through the replenishment water circuit and the wastewater water circuit.

10. The heat exchange system according to claim 7, characterized in that: When heat exchange is performed, the first valve assembly is used to block the connection between the water replenishment water circuit and the hot water exchange water circuit, and the second valve assembly is used to block the connection between the waste water circuit and the hot water exchange water circuit; when water replenishment is performed, the first valve assembly is used to open the connection between the water replenishment water circuit and the hot water exchange water circuit.

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