Heat exchange system and water purification equipment

Abstract

The utility model relates to the field of electrical equipment, and discloses a heat exchange system and water purification equipment. The heat exchange system provides large-flow boiled water, shortens the waiting time of a user for taking the boiled water, can provide warm boiled water at different temperatures, accords with water drinking habits of Chinese people, can preheat normal-temperature water by using the boiled water, and improves the heating efficiency. The heat exchange system comprises a water supply module, a heating module, a heat exchange module, a temperature detection piece, a heat preservation piece and a control unit, the heating module is communicated with the water supply module and used for heating normal-temperature water or preheated warm raw water into boiled water, and the heat exchange module is communicated with the water supply module and the heating module and used for heating the boiled water. The boiled water is used for preheating normal-temperature water, storing the preheated warm raw water, cooling the boiled water into warm boiled water and storing the warm boiled water, the heat preservation part is arranged on the heat exchange module and used for conducting heat preservation on water in the heat exchange module, the signal input end of the control unit is electrically connected with the temperature detection part, and the signal output end of the control unit is electrically connected with the water supply module and the heating module.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a heat exchange system and water purification equipment. Background Art

[0002] A household water purifier is a common household appliance that is used to deeply filter and purify water to provide users with drinking water that meets their needs.

[0003] To meet people's need for hot water at any time, water purifiers are equipped with instant hot water faucets, creating an all-in-one purifier and heat unit. However, since the maximum current limit for non-air-conditioning sockets is 10A, the overall power of the unit is limited to 2200W, resulting in a boiling water flow rate of only 400mL / min from the instant hot water faucet. This results in long wait times for users to get hot water, resulting in a poor user experience. Furthermore, since the instant hot water faucet uses an instant heating method, there are also problems such as simply heating room temperature water to the set temperature to produce uncooked water, and the excessive volume of room temperature water during the heating process leads to low heating efficiency. Utility Model Content

[0004] In view of this, the utility model provides a heat exchange system and a water purification device to solve the problems of the existing water purifiers such as long time to boil water, production of uncooked water and low heating efficiency.

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

[0006] Water supply module;

[0007] A heating module is connected to the water supply module, and is used to heat room temperature water or preheated warm water into boiling water;

[0008] a heat exchange module, connected to the water supply module and the heating module, wherein the heat exchange module uses boiled water to preheat the normal temperature water and stores the preheated warm raw water, and cools the boiled water into warm cooked water and stores the warm cooked water;

[0009] A temperature detection element, used to detect the temperature of water stored in the heat exchange module;

[0010] a heat-insulating element, provided in the heat exchange module, for keeping the water in the heat exchange module warm;

[0011] A control unit has a signal input end electrically connected to the temperature detection element, and a signal output end electrically connected to the water supply module and the heating module.

[0012] Beneficial effects: The heat exchange system of the present invention includes a water supply module, a heating module, a heat exchange module, a temperature detection component, a heat insulation component and a control unit, wherein the heat exchange module can use boiled water to preheat normal temperature water and store the preheated warm raw water, and at the same time cool the boiled water into warm boiled water and store the warm boiled water, and the heat insulation component can insulate the water in the heat exchange module, so that the water stored in the heat exchange module is water with a certain temperature, which can improve the heating efficiency of the heating module. When providing boiled water to the user, the heat exchange system of the present invention provides a large flow of boiled water within a period of time, which can greatly shorten the waiting time for the user to get boiled water and improve the user experience. Moreover, the heat exchange module can store warm boiled water and can use warm boiled water and boiled water to mix to provide the user with warm boiled water of different temperatures, which is in line with the drinking water habits of Chinese people. In the initial stage of the user taking water, since the heat exchange module stores warm boiled water, the user does not need to take out too much cold water (normal temperature water), realizing the "zero cold water" function, so that the user experience is better.

[0013] In an optional embodiment, the heat exchange module includes a first pipeline and a second pipeline that are sleeved, the first pipeline includes a first pipeline water inlet and a first pipeline water outlet, the second pipeline includes a second pipeline water inlet and a second pipeline water outlet, the heating module includes a heating module water inlet and a heating module water outlet, the first pipeline water inlet is connected to the water supply module, the first pipeline water outlet is connected to the heating module water inlet, the heating module water outlet is connected to the second pipeline water inlet, and the second pipeline water outlet is connected to the total water outlet.

[0014] Beneficial Effects: The heat exchange system of the present invention comprises a heat exchange module comprising a first pipe and a second pipe. The first pipe is connected to the water supply module and is suitable for introducing normal temperature water and conveying the normal temperature water to the heating module. The second pipe is suitable for introducing boiled water. The normal temperature water in the first pipe and the boiled water in the second pipe can perform contactless heat exchange, preheating the normal temperature water to warm raw water and cooling the boiled water to warm boiled water. The first pipe can also store warm raw water, and the second pipe can also store warm boiled water. This heat exchange module has an ingenious structural design and high heat exchange efficiency. The normal temperature water and boiled water exchange heat without contact, and apart from heat exchange, they do not affect each other. In addition, the structure is compact, the volume is small, and it is easy to install.

[0015] In an optional embodiment, the first pipeline is sleeved on the outside of the second pipeline, and a water flow space is formed between the inner wall of the first pipeline and the outer wall of the second pipeline.

[0016] Beneficial effect: In the heat exchange system of the present invention, the first pipeline is arranged on the outside of the second pipeline, and a water flow space is formed between the inner wall of the first pipeline and the outer wall of the second pipeline. The water flow space forms a normal temperature water channel, and a boiled water channel is formed in the second pipeline. The normal temperature water and boiled water exchange heat through heat transfer through the side wall of the second pipeline, thereby achieving the purpose of preheating the normal temperature water and cooling the boiled water. The design of the above-mentioned heat exchange module is ingenious, which can reduce the loss of heat energy of boiled water, make full use of the heat energy of boiled water, and improve the heat exchange efficiency.

[0017] In an optional embodiment, a regulating member is further included, wherein the water inlet of the regulating member is connected to the water outlet of the heating module and / or the water outlet of the second pipeline, and the water outlet of the regulating member is connected to the total water outlet.

[0018] Beneficial effect: In the heat exchange system of the present invention, the water inlet of the regulating member is connected to the water outlet of the heating module and / or the water outlet of the second pipeline, and the water outlet of the regulating member is connected to the main water outlet. By setting the regulating member, warm boiled water and boiled water can be mixed to prepare warm cooked water of the temperature required by the user, thereby realizing the full-temperature range cooked water function, and the output of boiled water can also be achieved through the regulating member.

[0019] In an optional embodiment, it further includes a water circuit switching control component, the water inlet of the water circuit switching control component is connected to the water outlet of the water supply module, and the water outlet of the water circuit switching control component is connected to the water inlet of the first pipeline or the water inlet of the heating module.

[0020] Beneficial effects: The heat exchange system of the present invention can conveniently realize the switching of different water channels by setting a water channel switching control component, so as to improve the control efficiency of the heat exchange system and the speed of mode switching.

[0021] In an optional embodiment, the water channel switching control component is a dual-channel solenoid valve.

[0022] Beneficial effects: In the heat exchange system of the present invention, the water channel switching control component adopts a dual-channel battery valve. This dual-channel solenoid valve has low cost, small size, short response time, and is suitable for use in water purification equipment.

[0023] In an optional embodiment, the thermal insulation component is provided in the first pipeline.

[0024] Beneficial effect: In the heat exchange system of the present invention, the insulation component is arranged in the first pipeline. Since the first pipeline is arranged on the outside of the second pipeline, the water in the first pipeline is more likely to cool down due to heat loss than the second pipeline. The insulation component is arranged in the first pipeline, so that the water in the first pipeline is closer to the insulation component, which is conducive to quickly increasing the temperature of the water in the first pipeline and improving the heating and insulation efficiency.

[0025] In a second aspect, the present invention further provides a water purification device, comprising a device body and the above-mentioned heat exchange system, wherein the heat exchange system is arranged in the device body.

[0026] Because the water purification equipment of the present invention includes the heat exchange system of the present invention and has the same beneficial effects as the heat exchange system of the present invention, detailed description thereof will not be given here.

[0027] In an optional embodiment, the water purification equipment is a water purifier.

[0028] Beneficial effects: The water purification equipment of the present invention, specifically a water purifier, can provide users with large-flow boiling water and continuous boiling water, and can also provide warm boiled water at different temperatures. At the same time, a large amount of cold water will not flow out when the user starts to take water. The heat exchange efficiency is high, and the time for taking boiled water is short, which can greatly improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is an overall schematic diagram of the heat exchange system of the utility model;

[0031] Figure 2 This is a schematic diagram of the heat exchange system of the utility model in a large flow boiling water mode;

[0032] Figure 3 This is a schematic diagram of the heat exchange system of the present invention in the continuous boiling water mode;

[0033] Figure 4 Schematic diagram of the heat exchange system of the present invention in full-temperature section cooked water mode;

[0034] Figure 5 This is a flow chart of the control method of the utility model.

[0035] Description of reference numerals:

[0036] 1. Heating module; 101. Water inlet of heating module; 102. Water outlet of heating module;

[0037] 2. Insulation parts;

[0038] 3. First pipeline; 301. First pipeline water inlet; 302. First pipeline water outlet;

[0039] 4. Second pipeline; 401. Second pipeline water inlet; 402. Second pipeline water outlet;

[0040] 5. Main water outlet;

[0041] 6. Adjustment parts;

[0042] 7. Waterway switching control components;

[0043] 8. Temperature sensor package;

[0044] 9. Water purification micro pump. DETAILED DESCRIPTION

[0045] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0046] While some water purifiers on the market can provide water at different temperatures, they do so by directly heating room-temperature water (raw water) to the required temperature, resulting in unboiled, lukewarm water. This is inconsistent with Chinese drinking habits and can easily cause discomfort. Other water purifiers, while capable of providing boiled water, have a flow rate of only 400ml / min, resulting in lengthy wait times for water collection and a poor user experience.

[0047] The following combination Figure 1-Figure 5 , describing the embodiments of the heat exchange system and water purification equipment of the present invention.

[0048] According to an embodiment of the present utility model, a heat exchange system is provided, including: a water supply module, a heating module 1, a heat exchange module, a temperature detection element, a heat insulation element 2 and a control unit, the heating module 1 is connected with the water supply module, the heating module 1 is used to heat normal temperature water or preheated warm raw water into boiled water, the heat exchange module is connected with the water supply module and the heating module 1, the heat exchange module uses boiled water to preheat normal temperature water and stores preheated warm raw water, and at the same time cools the boiled water into warm boiled water and stores the warm boiled water, the temperature detection element is used to detect the temperature of the water stored in the heat exchange module, the heat insulation element 2 is arranged in the heat exchange module, and is used to keep the water in the heat exchange module warm, the control unit has a signal input end electrically connected to the temperature detection element, and a signal output end electrically connected to the water supply module and the heating module 1.

[0049] In this heat exchange system, the heat exchange module can use boiled water to preheat room temperature water and store the preheated warm raw water, and at the same time cool the boiled water to warm boiled water and store the warm boiled water, and the insulation component 2 can insulate the water in the heat exchange module, so that the water stored in the heat exchange module is water with a certain temperature, which can improve the heating efficiency of the heating module 1. When providing boiled water to the user, the heat exchange system of this embodiment provides a large flow of boiled water within a period of time, which can greatly shorten the waiting time for the user to get boiled water and improve the user experience. Moreover, the heat exchange module can store warm boiled water and can use warm boiled water and boiled water to mix to provide users with warm boiled water of different temperatures, which is in line with the drinking water habits of Chinese people. In the initial stage of the user taking water, since the heat exchange module stores warm boiled water, the user does not need to take out too much cold water (room temperature water), realizing the "zero cold water" function, so that the user experience is better.

[0050] The water supply module provides room-temperature water, which can be either from the mains or purified by a water purifier. This water can be selected based on the heat exchange system's usage scenario. Under the control of the control unit, the water supply module's flow rate can be adjusted to achieve different water intake modes.

[0051] The water supply module has different system features depending on the quality of the raw water. Specifically, the water supply system can include a water supply system with a filter element for real-time water purification, or a water supply system without a filter element and real-time purification. Specifically, when the raw water is of drinking water quality, the water supply module may include no purification system. When the raw water is of non-drinking water quality, the water supply module may include a corresponding purification system to purify the raw water to meet drinking water standards. The purification system can include a single pretreatment module and a deep treatment module, or a combination of these. The pretreatment module provides preliminary filtration to remove contaminants such as sediment, rust, and residual chlorine. It can be a combination or composite of a primary filter element and an activated carbon filter element. The primary filter element can be a PP cotton filter element or an ultrafiltration filter element, and the activated carbon filter element can be a granular activated carbon, carbon fiber, or carbon rod filter element. The deep treatment module provides deep filtration to remove heavy metals, microorganisms, and other toxic and hazardous substances from the water. It can be one or more combinations of ultrafiltration, nanofiltration, or reverse osmosis filtration modules.

[0052] The water supply module can deliver normal temperature water through delivery equipment (such as a pressure-stabilizing pump, etc.).

[0053] like Figure 1 As shown, in this embodiment, the heat exchange system is applied to the water purification equipment, the water supply module provides purified water at room temperature required for drinking, and the water supply module includes a water purification micro pump 9, which is used to control the water supply flow of the water supply module. Optionally, the water purification micro pump 9 is electrically connected to the control system. Under the control of the control system, the water purification micro pump 9 can adjust the water supply flow of the water supply module.

[0054] The heating module 1 is located downstream of the water supply module. The water supply module can be directly connected to the heating module 1 or indirectly connected to the heating module 1 through a heat exchange module. The heating module 1 can be a heating tube or heating wire, which heats and maintains the water inside the heating module 1 through self-heating.

[0055] In this embodiment, the heating module 1 adopts a power-adjustable heating element, which can be a PTC (Positive Temperature Coefficient) heating element, a rare earth thick film heating element or a metal heating tube, etc. The heating element heats up the room-temperature water in contact with the heating element and boils to form boiled water. The heating power of the heating element is controlled and adjusted by the control unit according to the detected parameters. The heat exchange system can change the water temperature input into the heat exchange module by adjusting the power of the heating element or the flow rate of the water purification micro pump 9, thereby realizing a continuous supply of cooked water. The heating module 1 of this embodiment is an instant heating element with the functions of rapid, stable heating and adjustable power. After room-temperature water with different parameters enters the heating element, the control unit starts the heating element according to the data parameters and adjusts the power of the heating element accordingly, thereby heating the room-temperature water to the boiling point to become boiled water.

[0056] There is a water flow chamber inside the heating module 1. The heating module 1 has a heating module water inlet 101 and a heating module water outlet 102. The heating module water inlet 101 and the heating module water outlet 102 are both connected to the water flow chamber. Normal temperature water or preheated warm raw water enters the water flow chamber from the heating module water inlet 101. The heating module 1 generates heat to heat the normal temperature water or preheated warm raw water in the water flow chamber, and the boiled water formed after heating flows out from the heating module water outlet 102.

[0057] The heating module 1 is further provided with a temperature sensing package 8 , which is used to detect the internal temperature of the heating module 1 .

[0058] The heat exchange module is connected to the water supply module and the heating module 1. The functions of the heat exchange module mainly include two aspects: one is heat exchange, and the other is storage. Specifically, the heat exchange module can use boiling water to preheat normal temperature water and store the preheated warm raw water, and at the same time cool the boiled water into warm boiled water and store the warm boiled water.

[0059] The temperature detecting element is used to detect the temperature of the water stored in the heat exchange module. The temperature detecting element can be a temperature sensor. The temperature detecting element can be set in the heat exchange module to detect the temperature of the water stored in the heat exchange module.

[0060] The heat preservation element 2 is provided in the heat exchange module, and is used to keep the water in the heat exchange module warm. The heat preservation element 2 can adopt a heating wire or a heating tube. After the heat preservation element 2 is started, it heats and keeps the heat exchange module warm by self-heating.

[0061] The control unit's signal input is electrically connected to the temperature detector, and its signal output is electrically connected to the water supply module and heating module 1. The control unit is used to control the operation of the entire heat exchange system. It controls the water flow rate of the water supply module and the operating power of the heating module 1 based on the temperature of the water stored in the heat exchange module to achieve the corresponding functions.

[0062] Of course, in other embodiments, the heat exchange module may also be provided with liquid level sensors and other temperature sensors, and these sensors are all electrically connected to the control unit. For example, a liquid level sensor may be provided in the water tank of the water supply module, and a temperature sensor may be provided at the main water outlet 5. The control unit controls the operation of the heat exchange system based on the parameters detected by each sensor. That is, the control unit senses the operating parameters and environmental parameters of different modules using multiple sensors, and simultaneously selects different control logics based on user needs, starting and stopping the corresponding conveying equipment, and adjusting the operating parameters of different modules to ensure that the output water meets the user's needs.

[0063] In addition, the control unit has a built-in control program for controlling the operation of the entire machine. The control unit can control the output power or start-up time of the water purification micro pump 9, the start and stop or output power of the water purification micro pump, the output power of the heating module 1, etc., thereby realizing functions such as large-flow boiling water and cooked water supply.

[0064] Furthermore, the heat exchange module includes a first pipeline 3 and a second pipeline 4, the first pipeline 3 includes a first pipeline water inlet 301 and a first pipeline water outlet 302, the second pipeline 4 includes a second pipeline water inlet 401 and a second pipeline water outlet 402, the heating module 1 includes a heating module water inlet 101 and a heating module water outlet 102, the first pipeline water inlet 301 is connected to the water supply module, the first pipeline water outlet 302 is connected to the heating module water inlet 101, the heating module water outlet 102 is connected to the second pipeline water inlet 401, and the second pipeline water outlet 402 is connected to the total water outlet 5.

[0065] It is understandable that in order to prevent water from leaking from the pipe interfaces, the above connections are all sealed connections.

[0066] The heat exchange module of this embodiment is a sleeve-and-tube heat exchange module, with the first pipeline 3 and the second pipeline 4 nested within each other. This significantly reduces the overall space required for the heat exchange system, resulting in a compact structure and facilitating efficient heat exchange and reduced heat loss. Furthermore, the axial lengths of the first pipeline 3 and the second pipeline 4 should be selected and set based on design requirements; preferably, the first pipeline 3 and the second pipeline 4 are the same length. The longer the axial lengths of the first pipeline 3 and the second pipeline 4, the longer the heat exchange path between the room-temperature water in the first pipeline 3 and the boiling water in the second pipeline 4, facilitating efficient heat exchange between the two.

[0067] In this embodiment, the axial direction of the first pipeline 3 is arranged parallel to the axial direction of the second pipeline 4 .

[0068] In this embodiment, the first pipeline 3 is a normal temperature water preheating pipe, and the first pipeline 3 includes a first pipeline water inlet 301 and a first pipeline water outlet 302. The first pipeline water inlet 301 is a normal temperature water inlet, and the normal temperature water from the water supply module enters the first pipeline 3 from the first pipeline water inlet 301.

[0069] The second pipeline 4 is a boiling water cooling pipe. The second pipeline 4 has a second pipeline water inlet 401 and a second pipeline water outlet 402. The boiling water heated by the heating module 1 flows from the heating module water outlet 102 to the second pipeline water inlet 401, and then flows into the second pipeline 4. The second pipeline water outlet 402 is directly or indirectly connected to the total water outlet 5 to realize water output.

[0070] Furthermore, the first pipeline 3 is sleeved on the outside of the second pipeline 4 , and a water flow space is formed between the inner wall of the first pipeline 3 and the outer wall of the second pipeline 4 .

[0071] Because first pipeline 3 is sleeved outside second pipeline 4, the room-temperature water in first pipeline 3 and the boiled water in second pipeline 4 exchange heat through the wall of second pipeline 4, gradually preheating the room-temperature water in first pipeline 3 while cooling the boiled water in second pipeline 4. The preheated warm raw water in first pipeline 3 passes through first pipeline outlet 302 and heating module water inlet 101, sequentially entering the water passage chamber of heating module 1. Heating module 1 heats the preheated warm raw water, and the boiled water in second pipeline 4, cooled, is then output through second pipeline outlet 402.

[0072] Of course, the tube wall of the second pipeline 4 should be made of a material that can transfer heat. In this embodiment, the second pipeline 4 is formed by a metal tube, that is, the tube wall of the second pipeline 4 is made of metal, and the internal space of the metal tube is the second pipeline 4 to ensure heat exchange efficiency.

[0073] In this embodiment, the first pipeline 3 and the second pipeline 4 are coaxially arranged so that the water flow space between the inner wall of the first pipeline 3 and the outer wall of the second pipeline 4 is uniform.

[0074] In this embodiment, the inner diameter of the first pipe 3 is larger than the outer diameter of the second pipe 4. The first pipe 3 is sleeved outside the second pipe 4. A water flow space is defined between the inner wall of the first pipe 3 and the outer wall of the second pipe 4. This water flow space allows room-temperature water in the first pipe 3 to pass through. Of course, the size of the water flow space (or the radial dimensions of the first pipe 3 and the second pipe 4) can be selected and set as needed, and this embodiment does not impose any restrictions on this.

[0075] In other embodiments, according to usage or design requirements, the second pipeline 4 can also be installed on the outside of the first pipeline 3, and a water flow space can be provided between the inner wall of the second pipeline 4 and the outer wall of the first pipeline 3. In this case, the wall of the first pipeline 3 should be made of a material that can transfer heat, and heat exchange between the boiling water in the first pipeline 3 and the normal temperature water in the second pipeline 4 can also be achieved.

[0076] Furthermore, the heat exchange system further includes a regulating member 6 , a water inlet of the regulating member is connected to the water outlet 102 of the heating module and / or the water outlet 402 of the second pipeline, and a water outlet of the regulating member is connected to the main water outlet 5 .

[0077] The regulating member 6 is used to mix and adjust the ratio of boiled water to warm boiled water to prepare warm boiled water of different temperatures for the user. The regulating member 6 includes a regulating member water inlet and a regulating member water outlet. The regulating member water inlet is connected to the heating module water outlet 102 and / or the second pipeline water outlet 402. The boiled water heated by the heating module 1 can enter the regulating member 6 through the heating module water outlet 102 and the regulating member water inlet in sequence. The warm boiled water cooled in the second pipeline 4 can enter the regulating member 6 through the second pipeline water outlet 402 and the regulating member water inlet in sequence.

[0078] The regulating member 6 can switch water paths to achieve different water intake functions. The regulating member water inlet of the regulating member 6 can be connected only to the heating module water outlet 102, allowing the boiled water heated by the heating module 1 to enter the regulating member 6, or the regulating member water inlet can be connected only to the second pipeline water outlet 402, allowing the warm boiled water cooled in the second pipeline 4 to enter the regulating member 6, or the regulating member water inlet can be connected to both the heating module water outlet 102 and the second pipeline water outlet 402, allowing both the boiled water heated by the heating module 1 and the warm boiled water cooled in the second pipeline 4 to enter the regulating member 6. The regulating member water outlet is connected to the main water outlet 5 to achieve the output of boiled water or warm boiled water in each temperature range.

[0079] Specifically, the regulating member 6 adopts a stepless regulating valve. A water tap can be installed at the total water outlet 5, and boiled water or warm water of each temperature section can be output through the water tap for users to take.

[0080] The control unit controls the operating parameters of the heat exchange module (such as flow rate, contact time, etc.), the power of the heating element, and the opening and closing degree of the adjustment component 6 by detecting the corresponding normal temperature water (purified water) parameters (such as water temperature, flow rate, etc.) and multi-temperature purified water parameters (temperature, volume, etc.), to achieve water output in different temperature ranges and different flow rates.

[0081] Furthermore, the heat exchange system also includes a water circuit switching control component 7, the water inlet of the water circuit switching control component is connected to the water outlet of the water supply module, and the water outlet of the water circuit switching control component is connected to the first pipeline water inlet 301 or the heating module water inlet 101.

[0082] The heat exchange system also includes a water circuit switching control component 7, which is used to switch the water circuit so that the room temperature water from the water supply module flows to the heat exchange module or directly to the heating module 1. The water circuit switching control component 7 includes a water circuit switching control component water inlet and a water circuit switching control component water outlet. The water circuit switching control component water inlet is connected to the water supply module outlet, and the water circuit switching control component water outlet can be connected to the first pipeline water inlet 301 or the heating module water inlet 101. When the water outlet of the water channel switching control component is connected to the water inlet 301 of the first pipeline, the normal temperature water of the water supply module enters the water channel switching control component 7 from the water inlet of the water channel switching control component, and then passes through the water outlet of the water channel switching control component and the water inlet 301 of the first pipeline to enter the first pipeline 3 in sequence; when the water outlet of the water channel switching control component is connected to the water inlet 101 of the heating module, the normal temperature water of the water supply module enters the water channel switching control component 7 from the water inlet of the water channel switching control component, and then passes through the water outlet of the water channel switching control component and the water inlet 101 of the heating module to enter the heating module 1 in sequence.

[0083] The waterway switching control element 7 is electrically connected to the control unit, and the control unit controls the operation of the waterway switching control element 7. In this embodiment, the waterway switching control element 7 adopts a dual-channel battery valve. This dual-channel solenoid valve has low cost, small size, and fast response time, and is suitable for use in water purification equipment.

[0084] Furthermore, the heat-insulating component 2 is provided in the first pipeline 3 .

[0085] In this embodiment, the first pipe 3 is sleeved on the outside of the second pipe 4. Compared with the second pipe 4, the water in the first pipe 3 is more likely to cool down due to heat loss. Therefore, the insulation component 2 is arranged in the first pipe 3, so that the water in the first pipe 3 is closer to the insulation component 2. The heat generated by the insulation component 2 can directly act on the first pipe 3, which is conducive to quickly raising the temperature of the water in the first pipe 3, keeping the water in the first pipe 3 warm, and improving the heating and insulation efficiency. The second pipe 4 is arranged inside the first pipe 3. If the first pipe 3 can effectively keep warm, it will also benefit the insulation effect of the second pipe 4, thereby achieving reliable insulation of the internal water by the heat exchange module.

[0086] This embodiment also provides a water purification device, including a device body and the heat exchange system as described above, wherein the heat exchange system is disposed in the device body.

[0087] Water purification equipment is a type of water treatment device that deeply filters and purifies raw water according to water usage requirements. It consists of a main body, which serves as the supporting structure for the water purification equipment. The main body has a certain structural strength and can support other components of the water purification equipment, both internally and externally.

[0088] The heat exchange system is arranged in the main body of the device. The heat exchange module of the heat exchange system can use boiled water to preheat room temperature water and store the preheated warm raw water, and at the same time cool the boiled water into warm boiled water and store the warm boiled water. In addition, the heat insulation component 2 can insulate the water in the heat exchange module so that the water stored in the heat exchange module is water with a certain temperature, thereby improving the heating efficiency of the heating module. When providing boiled water to the user, the water purification device provides a large flow of boiled water within a period of time, which can greatly shorten the waiting time for the user to get boiled water and improve the user experience. Moreover, the heat exchange module can store warm boiled water and can use warm boiled water and boiled water to mix to provide users with warm boiled water of different temperatures, which is in line with the drinking water habits of Chinese people. In the initial stage of the user taking water, since the heat exchange module stores warm boiled water, the user does not need to take out too much cold water (room temperature water), realizing the "zero cold water" function and making the user experience better.

[0089] Of course, the water purification equipment of this embodiment also includes other structures and components that existing water purification equipment has, which will not be described in detail here.

[0090] In this embodiment, the water purification equipment is a water purifier.

[0091] The heat exchange system of the water purifier in this embodiment is a novel thermal storage heat exchange system, integrating hot water storage and heat exchange functions. This novel heat exchange module operates on a double-tube heat exchange structure, passing cold and hot fluids through an outer tube (first pipe 3) and an inner tube (second pipe 4), respectively, enabling non-contact heat exchange between the two fluids, thereby changing the water temperature in the inner and outer pipes. The first pipe 3 includes a built-in insulation element 2, which can self-heat and maintain the water temperature within the heat exchange module when hot water is not being drawn.

[0092] The water purifier of this embodiment has multiple functions such as large-flow boiling water, large-flow cooked water, multi-temperature-stage cooked water, and zero cold water, which can significantly improve the user experience.

[0093] like Figure 5 As shown, this embodiment further provides a control method for controlling the above-mentioned heat exchange system or for controlling the above-mentioned water purification equipment, and the control method includes:

[0094] When water is not taken, if there is no water in the heating module 1 and the heat exchange module, the water supply module supplies room temperature water to the heating module 1 and the heat exchange module, and the insulation component 2 is started to heat the room temperature water in the heat exchange module to temperature T1; if there is water in the heating module 1 and the heat exchange module, when the water temperature in the heat exchange module is less than or equal to T1, the insulation component 2 is started to heat the water in the heat exchange module to temperature T1.

[0095] When taking boiled water, when the water temperature in the heat exchange module is greater than T2, it operates in a large-flow boiled water mode, and the water supply module supplies normal-temperature water to the first pipeline 3 at a flow rate of L1. The normal-temperature water is preheated by the water in the second pipeline 4 and then heated to T3 to become preheated warm raw water. The heating module 1 is started with power P1 to heat the preheated warm raw water into boiled water, and the boiled water flows out from the main water outlet 5.

[0096] When taking boiled water, when the water temperature in the heat exchange module is less than or equal to T2, it operates in continuous boiling water mode, and the water supply module supplies normal temperature water to the heating module 1 at a flow rate L2. The heating module 1 starts with power P2 to heat the normal temperature water into boiled water, and the boiled water flows out from the main water outlet 5.

[0097] When taking warm boiled water, the water supply module supplies normal temperature water to the first pipeline 3 at a flow rate of L3, the heating module 1 heats the normal temperature water into boiling water, part of the boiled water enters the second pipeline 4 and is cooled to T4 to become warm boiled water, and then transported to the regulating member 6, and the other part of the boiled water is directly transported to the regulating member 6, and the regulating member 6 mixes the boiled water and the warm boiled water into warm boiled water of the required temperature, and the warm boiled water flows out from the main water outlet 5.

[0098] The control logic of the control method of this embodiment to achieve large-flow boiling water and continuous supply is: when no water is taken, the insulation part 2 heats and stores water; when taking boiling water, the water supply flow of the water supply module and the heating power of the heating module 1 are controlled by a specific algorithm based on the stored water temperature, the temperature of the heating module 1, etc., to achieve continuous taking of large-flow boiling water of more than 1.0L / min, solving the problem of small boiling water flow.

[0099] The control logic of the control method of this embodiment to achieve large-flow cooked water and continuous supply is: to achieve secondary utilization of heat through heat exchange, combined with the terminal water intake temperature, the cooling liquid temperature (the temperature of the warm raw water after preheating), and the inlet water temperature of the heating module 1, and to control the water supply flow of the water supply module and the heating power of the heating module 1 and other parameters through a specific algorithm to achieve large-flow cooked water supply.

[0100] The control logic for achieving zero cold water in the control method of this embodiment is: combining the water temperature stored in the heat exchange module, the temperature of the heating module 1, and the cooling liquid temperature (the temperature of the warm raw water after preheating), and controlling the water supply flow of the water supply module and the heating power of the heating module 1 and other parameters through a specific algorithm, so that the water intake temperature can reach the set value under any working condition, solving the problem of cold water in the first cup of water intake caused by residual water in the system.

[0101] The control logic of the control method of this embodiment to achieve multi-temperature-stage cooked water and continuous supply is: combined with the terminal water intake temperature, the cooling liquid temperature (the temperature of the warm raw water after preheating), through a specific algorithm to control the water supply flow of the water supply module, the heating power of the heating module 1, the rotation angle of the adjustment part 6 and other parameters to achieve the required multi-temperature-stage cooked water supply.

[0102] The control method of this embodiment is described in detail below:

[0103] (1) Keep warm mode

[0104] When the user does not take water, if the heat exchange system is used for the first time or the water inside the heat exchange system has been drained, there is no water in the heating module 1 and the heat exchange module. The water supply module is first controlled to supply normal temperature water to the heat exchange module and the heating module 1, so that the heat exchange module and the heating module 1 are filled with normal temperature water. Then, the insulation component 2 is started to heat the normal temperature water in the heat exchange module to the set temperature T1. In this embodiment, T1 is 70°C. After the normal temperature water in the heat exchange module reaches temperature T1, the insulation component 2 is closed. Afterwards, the temperature sensor is used to detect the water temperature in the heat exchange module. If the water temperature in the heat exchange module is less than or equal to T1, the insulation component 2 is started again to heat the water in the heat exchange module to temperature T1. This cycle is repeated to achieve the insulation process.

[0105] When the user does not take water, if there is water in the heating module 1 and the heat exchange module, similar to the above process, the temperature of the water in the heat exchange module is detected by the temperature sensor. If the temperature of the water in the heat exchange module is less than or equal to T1, the insulation component 2 is started to heat the water in the heat exchange module to temperature T1, and then the insulation component 2 is turned off. This cycle is repeated to achieve the insulation process.

[0106] (2) Boiling water mode

[0107] When users need to get water, they can select the required water collection mode by operating the function buttons on the water purification equipment. The water collection modes include: boiling water, warm water (cooked water), boiled water (cooked water), etc., and in the warm water collection mode, you can also select the required warm water temperature.

[0108] (1) High flow boiling water mode

[0109] like Figure 2As shown, when the user takes boiled water, when the water temperature in the heat exchange module is greater than T2, it operates in a large-flow boiled water mode. In this embodiment, T2 is 70°C. The control unit controls the water circuit switching control component 7 and the regulating component 6 to switch to the large-flow boiled water branch, and controls the water purification micro pump 9 of the water supply module to supply normal-temperature water to the first pipeline 3 at a flow rate L1. In this embodiment, the flow rate L1 is 1L / min. The normal-temperature water delivered by the water supply module enters the first pipeline 3 from the water inlet 301 of the first pipeline. Since the water temperature in the heat exchange module is greater than T2, the water in the second pipeline 4 will pass through the second The pipe wall of pipeline 4 exchanges heat with the normal temperature water, so that the normal temperature water is heated to T3 to become preheated warm raw water. Generally, T3 is greater than or equal to 70°C, and the water stored in the second pipeline 4 will cool down. Then, the preheated warm raw water flows out from the first pipe water outlet 302 and enters the heating module 1 from the heating module water inlet 101. The control unit controls the heating module 1 to start with power P1. In this embodiment, the power P1 is 2100W, so that the preheated warm raw water is instantly heated and boiled into boiled water. The boiled water flows out from the heating module water outlet 102 to the regulating member 6, and flows out from the total water outlet 5 through the regulating member 6.

[0110] During this process, users can get boiled water at 1L / min within a period of time. Compared with the existing instant hot water mode (flow rate of 400ml / min), the time for users to get boiled water is shortened by more than half, and the waiting time is greatly shortened. The boiled water in the user's cup will hardly cool down during this process, and the user experience is good.

[0111] (2) Continuous boiling water mode

[0112] like Figure 3 As shown, when the user takes boiled water, when the water temperature in the heat exchange module is less than or equal to T2, it operates in a continuous boiling water mode. In this embodiment, T2 is 70°C. The control unit controls the water circuit switching control component 7 and the regulating component 6 to switch to the continuous boiled water branch, and controls the water purification micro pump 9 of the water supply module to supply normal temperature water to the heating module 1 at a flow rate L2. In this embodiment, the flow rate L2 is 400ml / min. The normal temperature water delivered by the water supply module directly enters the heating module 1 from the water inlet 101 of the heating module. The control unit controls the heating module 1 to start with power P1. In this embodiment, the power P1 is 2100W, so that the normal temperature water is instantly heated and boiled into boiled water. The boiled water flows out from the water outlet 102 of the heating module to the regulating component 6, and flows out from the total water outlet 5 through the regulating component 6.

[0113] When the user requires a large amount of boiled water, after the user has been taking boiled water at a large flow rate for a period of time, when the water temperature in the heat exchange module is less than or equal to T2, the heat exchange system automatically switches to continuous boiled water mode to meet the user's continuous boiled water needs.

[0114] (3) Cooked water mode (including multi-temperature cooked water and boiled water)

[0115] When the user takes cooked water, he can select the required cooked water temperature (45℃~100℃), and the control unit controls the operation of the heat exchange system according to the temperature selected by the user.

[0116] (1) High flow cooked water mode

[0117] like Figure 4 As shown, when the user takes cooked water, when the water temperature stored in the heat exchange module is greater than T2, it operates in a high-flow cooked water mode. In this embodiment, T2 is 70°C. The control unit controls the water circuit switching control component 7 and the regulating component 6 to switch to the cooked water branch, and controls the water purification micro pump 9 of the water supply module to supply normal temperature water to the first pipeline 3 at a flow rate L3. In this embodiment, the flow rate L3 is 1 to 1.1 L / min or more. The normal temperature water transported by the water supply module enters the first pipeline 3 from the first pipeline water inlet 301. Since there is water stored in the heat exchange module, the water stored in the second pipeline 4 will exchange heat with the normal temperature water through the pipe wall of the second pipeline 4, causing the normal temperature water to heat up and become preheated warm raw water, while the water stored in the second pipeline 4 will cool down, and then the preheated warm raw water will flow out from the first pipeline water outlet 302 and enter the heating module 1 from the heating module water inlet 101. The control unit controls the heating module 1 to start with power P1. In this embodiment, power P1 It is 2100W, so that the preheated warm raw water can be heated to boil water. A part of the boiled water enters the second pipeline 4 from the water inlet 401 of the second pipeline. This part of the boiled water will exchange heat with the normal temperature water in the first pipeline 3 and cool down to become warm boiled water (such as cooling to 45°C). The warm boiled water is transported to the regulating member 6 from the water outlet 402 of the second pipeline, and the other part of the boiled water is directly transported to the regulating member 6. The regulating member 6 mixes the boiled water (100°C) and the warm boiled water (45°C) to prepare warm cooked water of the required temperature, and the warm cooked water flows out from the main water outlet 5.

[0118] During this process, users can obtain a large amount of cooked water at a flow rate of 1 to 1.1 L / min or more within a period of time, which greatly shortens the time it takes for users to obtain cooked water and provides a good user experience.

[0119] (2) Continuous boiled water mode

[0120] like Figure 4As shown, when a user draws cooked water, the system operates in continuous cooked water mode when the water temperature in the heat exchange module is less than or equal to T2. In this embodiment, T2 is 70°C. The control unit controls the water path switching control element 7 and the regulating element 6 to switch to the cooked water branch, and controls the water purification micropump 9 of the water supply module to supply normal temperature water to the first pipeline 3 at a flow rate L3. In this embodiment, the flow rate L3 is 0.3-1.2 L / min. For example, when the desired cooked water temperature is 85°C, the water flow rate is 0.5 L / min; when the desired cooked water temperature is 45°C, the water flow rate is 1.2 L / min. The normal temperature water delivered by the water supply module enters the first pipeline 3 from the first pipeline water inlet 301. Since there is water in the heat exchange module, the water in the second pipeline 4 will exchange heat with the normal temperature water through the wall of the second pipeline 4, so that the normal temperature water is heated to become preheated warm raw water, while the water in the second pipeline 4 will cool down. Then the preheated warm raw water flows out from the first pipeline water outlet 302 and enters the heating module 1 from the heating module water inlet 101. The control unit controls the heating module 1 to start with power P1. In this embodiment, power P1 It is 2100W, so that the preheated warm raw water can be heated to boil water. A part of the boiled water enters the second pipeline 4 from the water inlet 401 of the second pipeline. This part of the boiled water will exchange heat with the normal temperature water in the first pipeline 3 and cool down to become warm boiled water (such as cooling to 45°C). The warm boiled water is transported to the regulating member 6 from the water outlet 402 of the second pipeline, and the other part of the boiled water is directly transported to the regulating member 6. The regulating member 6 mixes the boiled water (100°C) and the warm boiled water (45°C) to prepare warm cooked water of the required temperature, and the warm cooked water flows out from the main water outlet 5.

[0121] When the user requires a large amount of cooked water, after the user has been taking cooked water at a large flow rate for a period of time, when the water temperature in the heat exchange module is less than or equal to T2, the heat exchange system automatically switches to continuous cooked water mode to meet the user's continuous cooked water needs.

[0122] In addition, under various working conditions of the heat exchange system of this embodiment, since water of a certain temperature is stored in the heat exchange module, when the user starts to use water, the cooked water with temperature in the heat exchange module will be first transported to the main water outlet 5, which can solve the problem of the first cup of water being cold water due to residual water in the system, and realize the non-cold water function (no perception of cold water).

[0123] The heat exchange system of this embodiment can achieve the multi-temperature section and high-flow boiled water function. The experimental data are as follows:

[0124] In "Large Flow Cooked Water Mode":

[0125]

[0126]

[0127] It can be seen that in the high-flow cooked water mode, the heat exchange system of this embodiment can achieve a water supply with a flow rate of 1 to 1.1 L / min or more, meeting the user's demand for continuous use of large amounts of cooked water.

[0128] In "Continuous Boiled Water Mode":

[0129] Cooked water temperature (℃) Boiled water flow rate (ml / min) 90 540 85 570 80 630 77 678 70 734 61 887 58 958 54 1100 47 1100 45 1100

[0130] It can be seen that in the continuous cooked water mode, the heat exchange system of this embodiment can achieve a water supply flow rate of 0.5 to 1.1 L / min, meeting the user's demand for continuous use of cooked water.

[0131] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A heat exchange system, characterized in that: include: Water supply module; A heating module (1) is connected to the water supply module, and the heating module (1) is used to heat normal temperature water or preheated warm raw water into boiling water; a heat exchange module, connected to the water supply module and the heating module (1), wherein the heat exchange module uses boiled water to preheat the normal temperature water and stores the preheated warm raw water, and simultaneously cools the boiled water to warm boiled water and stores the warm boiled water; A temperature detection element, used to detect the temperature of water stored in the heat exchange module; A heat-insulating element (2) is provided in the heat exchange module and is used to keep the water in the heat exchange module warm; A control unit, wherein a signal input end thereof is electrically connected to the temperature detection element, and a signal output end thereof is electrically connected to the water supply module and the heating module (1).

2. The heat exchange system according to claim 1, characterized in that: The heat exchange module comprises a first pipeline (3) and a second pipeline (4) which are sleeved together; the first pipeline (3) comprises a first pipeline water inlet (301) and a first pipeline water outlet (302); the second pipeline (4) comprises a second pipeline water inlet (401) and a second pipeline water outlet (402); the heating module (1) comprises a heating module water inlet (101) and a heating module water outlet (102); the first pipeline water inlet (301) is connected to the water supply module; the first pipeline water outlet (302) is connected to the heating module water inlet (101); the heating module water outlet (102) is connected to the second pipeline water inlet (401); and the second pipeline water outlet (402) is connected to the main water outlet (5).

3. The heat exchange system according to claim 2, characterized in that: The first pipeline (3) is sleeved on the outside of the second pipeline (4), and a water flow space is formed between the inner wall of the first pipeline (3) and the outer wall of the second pipeline (4).

4. The heat exchange system according to claim 2, characterized in that: It also includes a regulating member (6), the water inlet of the regulating member is connected to the water outlet (102) of the heating module and / or the water outlet (402) of the second pipeline, and the water outlet of the regulating member is connected to the main water outlet (5).

5. The heat exchange system according to claim 2, characterized in that: It also includes a water circuit switching control component (7), the water circuit switching control component water inlet is connected to the water supply module water outlet, and the water circuit switching control component water outlet is connected to the first pipeline water inlet (301) or the heating module water inlet (101).

6. The heat exchange system according to claim 5, characterized in that: The water channel switching control component (7) is a dual-channel solenoid valve.

7. The heat exchange system according to any one of claims 2 to 6, characterized in that: The heat-insulating component (2) is arranged on the first pipeline (3).

8. A water purification device, characterized in that: The heat exchange device comprises a device body and a heat exchange system according to any one of claims 1 to 7, wherein the heat exchange system is arranged in the device body.

9. The water purification device according to claim 8, characterized in that: The water purification equipment is a water purifier.

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