Heat exchange system and temperature adjusting method thereof

Abstract

The invention relates to a heat exchange system and a temperature adjusting method thereof. The heat exchange system comprises a preheating buffering unit, a heating unit and a water outlet unit. The preheating buffering unit is used for buffering first liquid with a preset temperature value. The heating unit comprises a heating element, a heating water inlet pipe and a heating water outlet pipe, two ends of the heating water inlet pipe are respectively connected with the preheating buffer unit and a water inlet of the heating element, and two ends of the heating water outlet pipe are respectively communicated with a water outlet of the heating element and the water outlet unit; the heating element is used for heating the first liquid input by the preheating buffer unit to a set temperature value, and the water outlet unit is used for discharging the first liquid. When water is needed, compared with an existing heating element which heats the first liquid from the normal temperature value or lower temperature value to the set temperature value, the heating element has the advantages that under the same power of the first liquid which is slightly different from the set temperature value, the flow of heating the first liquid to the set temperature value by the heating element is larger than the flow which can be heated in the prior art; therefore, the use requirements of users are met.

Description

Technical Field

[0001] This invention relates to the field of water purification technology, and in particular to a heat exchange system and its temperature control method. Background Technology

[0002] Water purifiers, as water treatment devices that can deeply filter and purify water, are gaining increasing recognition and favor from consumers.

[0003] To meet people's need for readily available hot water, water purification equipment includes a heating unit in addition to a filtration unit. Its main working principle is that raw water is first filtered by the filtration unit, then heated by the heating unit, and finally connected to the faucet to provide hot water. However, existing water purification equipment has low heat exchange efficiency and low water flow rate, which cannot meet users' needs. Summary of the Invention

[0004] Therefore, it is necessary to provide a heat exchange system and its temperature regulation method to address the problems of low heat exchange efficiency, small water flow rate, and inability to meet user needs of current water purification equipment.

[0005] A heat exchange system comprising a preheating buffer unit, a heating unit, and a water outlet unit, wherein: The preheating buffer unit is used to buffer a first liquid with a preset temperature value; The heating unit includes a heating element, a heating inlet pipe, and a heating outlet pipe. The two ends of the heating inlet pipe are connected to the preheating buffer unit and the inlet of the heating element, respectively. The two ends of the heating outlet pipe are connected to the outlet of the heating element and the outlet unit, respectively. The heating element is used to heat the first liquid input to the preheating buffer unit to a set temperature value. The outlet unit is used to discharge the first liquid flowing in through the heating element.

[0006] In one embodiment, the heat exchange system further includes a water inlet unit, which is connected to the water inlet of the heating element and / or the preheating buffer unit. The water inlet unit is used to introduce or interrupt the flow of room temperature liquid into the water inlet of the heating element and / or the preheating buffer unit. The heating unit further includes a heating circulation pipe and a heating delivery pump located in the heating inlet pipe. One end of the heating circulation pipe is connected to the preheating buffer unit, and the other end of the heating circulation pipe is connected to the heating outlet pipe through the outlet unit. The water outlet unit is used to control the liquid flow in the heated water outlet pipe to stop or selectively flow to one of the heated circulation pipe and the water outlet unit.

[0007] In one embodiment, the water inlet unit further includes a first water inlet component and / or a second water inlet component, wherein: The first water inlet assembly is connected to the water inlet of the heating element, and the first water inlet assembly is used to introduce or cut off the flow of room temperature liquid into the water inlet of the heating element. The second water inlet component is connected to the preheating buffer unit, and the second water inlet component is used to introduce or cut off the flow of the room temperature liquid.

[0008] In one embodiment, the preheating buffer unit includes a preheating buffer box and a heater disposed inside the preheating buffer box, the preheating buffer box being connected to the heating water inlet pipe and the heating circulation pipe.

[0009] In one embodiment, the second water inlet assembly includes a second water inlet pipe and a water inlet valve disposed on the second water inlet pipe. The second water inlet pipe is connected to the preheating buffer unit and is used to introduce the room temperature liquid. The heat exchange system further includes a control unit and a first liquid level collector. The first liquid level collector is disposed in the preheating buffer unit and is used to collect the first liquid level value of the liquid in the preheating buffer unit. The control unit is communicatively connected to the first liquid level collector, the inlet valve and the first inlet assembly. The control unit is used to control the operation of the first inlet assembly and the inlet valve according to the first liquid level value.

[0010] In one embodiment, the first water inlet assembly includes a first water inlet pipe, a water control valve disposed on the first water inlet pipe, and a water inlet delivery pump, wherein: One end of the first water inlet pipe is used to introduce the room temperature liquid, and the other end of the first water inlet pipe is connected to the water inlet of the heating element; The water control valve is located at the end of the first water inlet pipe furthest from the heating element; The water inlet pump is located at one end of the first water inlet pipe near the heating element, and the water inlet pump is used to transport the room temperature liquid to the water inlet of the heating element.

[0011] In one embodiment, the first water inlet assembly further includes a water inlet tank disposed on the first water inlet pipe, the water inlet tank being located between the water control valve and the water inlet delivery pump, the water inlet tank being used to buffer the room temperature liquid.

[0012] In one embodiment, the heat exchange system further includes a control unit and a second liquid level collector. The second liquid level collector is disposed in the water inlet tank and is used to collect the second liquid level value of the room temperature liquid in the water inlet tank. The control unit is communicatively connected to the second liquid level collector and the water control valve. The control unit is used to control the opening and closing of the water control valve according to the second liquid level value.

[0013] In one embodiment, the water inlet unit further includes a room temperature water pipe and a room temperature valve disposed on the room temperature water pipe. One end of the room temperature water pipe is used to introduce the room temperature liquid, and the other end of the room temperature water pipe is connected to the water outlet unit. The water outlet unit is also used to discharge the room temperature liquid that flows in through the room temperature water pipe.

[0014] In one embodiment, this application also provides a temperature control method based on the heat exchange system described in the second embodiment, the temperature control method comprising: S1. Detect the first temperature value of the second liquid at the inlet of the heating element; S2. Determine whether the first temperature value is the set temperature value; S31. If not, control the operation of the water inlet unit, the heating unit and the water outlet unit, and repeat steps S1 and S2 until the first temperature value is the set temperature value. S32. If so, control the water outlet unit to discharge the second liquid to the outside of the heat exchange system.

[0015] In one embodiment, step S31 further includes the following step: When the first temperature value is lower than the set temperature value, the heating element performs heating operation, the water outlet unit controls the second liquid to flow to the preheating buffer unit, the heating delivery pump delivers the second liquid to the water inlet of the heating element, and then repeats steps S1 and S2 until the first temperature value is the set temperature value. When the first temperature value is higher than the set temperature value, the water inlet unit transmits the room temperature liquid to the water inlet of the heating element, and then repeats steps S1 and S2 until the first temperature value is the set temperature value.

[0016] In one embodiment, after "determining the first temperature value to be the set temperature value" in step S32, the following steps are also included: The second temperature value of the second liquid at the outlet of the heating element is detected; Determine whether the second temperature value is the set temperature value; If not, control the operation of the water outlet unit, the water inlet unit, and the heating element, and repeat steps S1, S2, and S31 until the second temperature value is the set temperature value; If so, control the water outlet unit to discharge the second liquid outside the heat exchange system.

[0017] The aforementioned heat exchange system and temperature control method both utilize a preheating buffer unit containing a first liquid at the front end of the heating element, where the preset temperature of the buffered first liquid is close to the user's desired set temperature. When water is needed, compared to current heating elements that heat the first liquid from its ambient temperature or lower to the set temperature, the flow rate of the first liquid heated to the set temperature by the heating element of this application, with the same power, is significantly greater than that of existing technologies, thus meeting the user's needs. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the heat exchange system provided in this application.

[0021] Figure 2 A schematic diagram of another heat exchange system provided for this application.

[0022] Figure 3 A schematic diagram of the third heat exchange system provided in this application.

[0023] Explanation of reference numerals in the attached figures: 10. Heat exchange system; 100. Preheating buffer unit; 110. Preheating buffer box; 120. Exhaust pipe; 200, Heating unit; 210, Heating element; 220, Heating inlet pipe; 230, Heating outlet pipe; 240, Heating circulation pipe; 250, Heating transfer pump; 260, First flow meter; 270, Transmission pipe; 300. Water outlet unit; 310. Water outlet valve; 320. Drain outlet pipe; 400. Water inlet unit; 410. First water inlet assembly; 411. First water inlet pipe; 412. Water control valve; 413. Water inlet pump; 414. Negative pressure valve; 415. Second flow meter; 416. Water inlet tank; 420. Second water inlet assembly; 421. Second water inlet pipe; 422. Water inlet valve; 430. Water inlet point; 440. Normal temperature water pipe; 450. Normal temperature valve; 500, Detection unit; 510, First temperature detector; 520, Second temperature detector. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] See Figure 1 , Figure 1 A schematic diagram of a heat exchange system 10 according to an embodiment of this application is shown. The heat exchange system 10 provided in an embodiment of this application includes a preheating buffer unit 100, a heating unit 200, and a water outlet unit 300. The preheating buffer unit 100 is used to buffer a first liquid with a preset temperature value, which is higher than the room temperature value of the first liquid in a specific setting.

[0029] The heating unit 200 includes a heating element 210, a heating inlet pipe 220, and a heating outlet pipe 230. The two ends of the heating inlet pipe 220 are connected to the preheating buffer unit 100 and the inlet of the heating element 210, respectively. The two ends of the heating outlet pipe 230 are connected to the outlet of the heating element 210 and the outlet unit 300, respectively. The heating element 210 heats the first liquid input to the preheating buffer unit 100 to a set temperature value. The outlet unit 300 discharges the first liquid flowing into the heat exchange system 10 through the heating element 210 to the outside for user use. In specific configurations, the first liquid can be drinking water, raw water, or other liquids.

[0030] The aforementioned heat exchange system 10, by providing a preheating buffer unit 100 containing a first liquid at the front end of the heating element 210, and the preset temperature value of the buffered first liquid being close to the user's desired set temperature value, allows for a significantly higher flow rate for heating the first liquid to the set temperature value compared to the current heating element 210 which heats the first liquid from its ambient temperature or lower to the set temperature value. This is because the difference between the first liquid with the preset temperature value and the set temperature value is small, resulting in a much higher flow rate for the heating element 210 to heat the first liquid to the set temperature value at the same power, thus meeting the user's needs.

[0031] Combination Figure 1 , Figure 2 and Figure 3As shown, in order to more conveniently realize that the preheating buffer unit 100 buffers the first liquid with a preset temperature value, in a preferred embodiment, the heat exchange system 10 further includes a water inlet unit 400, which is connected to the water inlet of the heating element 210 and / or the preheating buffer unit 100. The water inlet unit 400 is used to introduce or cut off the flow of room temperature liquid to the water inlet of the heating element 210 and / or the preheating buffer unit 100.

[0032] The heating unit 200 also includes a heating circulation pipe 240 and a heating delivery pump 250 located in the heating inlet pipe 220. One end of the heating circulation pipe 240 is connected to the preheating buffer unit 100, and the other end of the heating circulation pipe 240 is connected to the heating outlet pipe 230 through the outlet unit 300. The outlet unit 300 is used to control the liquid flow in the heating outlet pipe 230 to stop or selectively flow to either the heating circulation pipe 240 or the outlet unit 300.

[0033] With the above settings, when it is necessary to buffer a preset stable first liquid in the preheating buffer unit 100, the water inlet unit 400 can be used to introduce room temperature liquid into the water inlet of the heating element 210; the room temperature liquid is heated by the heating element 210, and then flows to the water outlet unit 300 through the heating water outlet pipe 230; the water outlet unit 300 controls the liquid to flow to the heating circulation pipe 240; and then flows into the preheating buffer unit 100 through the heating circulation pipe 240. At this time, the heating delivery pump 250 is a heat circulation pump, which facilitates pumping the liquid in the preheating buffer unit 100 into the heating element 210 for heating until the room temperature liquid is heated to the preset temperature value.

[0034] When it is necessary to buffer a preset stable first liquid in the preheating buffer unit 100, room temperature liquid can also be introduced into the preheating buffer unit 100 through the water inlet unit 400; the room temperature liquid is transferred to the heating element 210 for heating through the heating water inlet pipe 220; the room temperature liquid is heated by the heating element 210, and then flows to the water outlet unit 300 through the heating water outlet pipe 230; the water outlet unit 300 controls the liquid to flow to the heating circulation pipe 240; and then flows into the preheating buffer unit 100 through the heating circulation pipe 240. The heating delivery pump 250 conveniently pumps the liquid in the preheating buffer unit 100 into the heating element 210 for heating until the room temperature liquid is heated to the preset temperature value.

[0035] It should be noted that when the room temperature liquid is heated to a first liquid with a preset temperature value through the above process, the preset temperature value can be equal to or slightly higher than the set temperature value. This ensures that when the user uses the liquid, the first liquid in the preheating buffer unit 100 reaches the set temperature value when it reaches the heating element 210, reducing the workload of the heating element 210 and allowing it to be directly discharged through the water outlet unit 300. It should also be emphasized that, to accelerate the storage of the first liquid in the preheating buffer unit 100, the water inlet unit 400 can simultaneously introduce room temperature liquid into both the water inlet of the heating element 210 and the preheating buffer unit 100.

[0036] To facilitate the control of the liquid flow in the heating outlet pipe 230 by the water outlet unit 300, allowing it to either stop or selectively flow to either the heating circulation pipe 240 or the water outlet unit 300, the water outlet unit 300 includes an outlet valve 310 and a drain outlet pipe 320 connected to both the heating outlet pipe 230 and the heating circulation pipe 240. The outlet valve 310 is installed at the connection point of the heating outlet pipe 230, the drain outlet pipe 320, and the heating circulation pipe 240. The outlet valve 310 controls the liquid flow in the heating outlet pipe 230 to either stop or selectively flow to either the heating circulation pipe 240 or the drain outlet pipe 320. The drain outlet pipe 320 discharges the first liquid flowing into the heating element 210 to the outside of the heat exchange system 10 for user access. In specific configurations, the outlet valve 310 is preferably a bidirectional outlet valve 310. The bidirectional outlet valve 310 is a mature technology and will not be elaborated upon here.

[0037] To facilitate the flow of room-temperature liquid from the water inlet unit 400 to the water inlet of the heating element 210 and / or the preheating buffer unit 100, the water inlet unit 400 further includes a first water inlet assembly 410 and / or a second water inlet assembly 420. The first water inlet assembly 410 is connected to the water inlet of the heating element 210. In a specific configuration, the water inlet unit 400 also includes a water inlet point 430 for introducing room-temperature liquid. One end of the first water inlet assembly 410 is connected to the water inlet point 430, and the other end is connected to the heating water inlet pipe 220. The first water inlet assembly 410 is used to introduce or stop the flow of room-temperature liquid to the water inlet of the heating element 210.

[0038] The second water inlet component 420 is connected to the preheating buffer unit 100. In a specific configuration, one end of the second water inlet component 420 is connected to the water inlet point 430, and the other end of the second water inlet component 420 is connected to the preheating buffer unit 100. The second water inlet component 420 is used to introduce or cut off the flow of room temperature liquid to the preheating buffer unit 100.

[0039] To extend the service life of the heating element 210 and accelerate the heating of room temperature liquid to a preset temperature value, the preheating buffer unit 100 specifically includes a preheating buffer tank 110 and a heater disposed within the preheating buffer tank 110. The preheating buffer tank 110 is connected to the heating inlet pipe 220 and the heating circulation pipe 240. In a specific configuration, the bottom of the preheating buffer tank 110 is connected to the inlet of the heating element 210 via the heating inlet pipe 220, and the top of the preheating buffer tank 110 is connected to the heating outlet pipe 230 via the heating circulation pipe 240 and the outlet valve 310. The heating outlet pipe 230 is connected to the drain outlet pipe 320 via the outlet valve 310.

[0040] It should be noted that when room temperature liquid is introduced into the preheating buffer tank 110 in the preheating buffer unit 100 through the second water inlet assembly 420, the room temperature liquid can be directly heated by the heater in the preheating buffer tank 110, so that the heating element 210 is not needed. In this case, the heating delivery pump 250 is preferably an instant heat pump.

[0041] For specific settings, please refer to Figure 2 As shown, in order to extend the service life of the heating delivery pump 250, the number of heating delivery pumps 250 can be set to two. One heating delivery pump 250 is a heat circulation pump and is installed in the heating water inlet pipe 220, and the other heating delivery pump 250 is an instant heat pump and is connected in parallel with the heat circulation pump through the transmission pipe 270.

[0042] To ensure that a certain amount of liquid is always buffered in the preheating buffer tank 110, more specifically, the second water inlet assembly 420 includes a second water inlet pipe 421 and a water inlet valve 422 provided on the second water inlet pipe 421. One end of the second water inlet pipe 421 is connected to the water inlet point 430, and the other end of the second water inlet pipe 421 is connected to the preheating buffer tank 110 in the preheating buffer unit 100. The second water inlet pipe 421 is used to introduce room temperature liquid.

[0043] The heat exchange system 10 also includes a control unit and a first liquid level sensor. The first liquid level sensor is installed in the preheating buffer tank 110 of the preheating buffer unit 100 and is used to collect the first liquid level value of the liquid in the preheating buffer unit 100. The control unit is communicatively connected to the first liquid level sensor, the inlet valve 422, and the first inlet assembly 410. The control unit is used to control the operation of the first inlet assembly 410 and the inlet valve 422 according to the first liquid level value.

[0044] With the above settings, when the liquid level in the preheating buffer tank 110 is lower than the preset level, the control unit controls the opening of the inlet valve 422 and / or controls the first inlet assembly 410 to introduce room temperature liquid into the inlet of the heating element 210. When the first inlet assembly 410 introduces room temperature liquid into the inlet of the heating element 210, the heating delivery pump 250 also needs to be started to pump the room temperature liquid into the preheating buffer tank 110. When the liquid level in the preheating buffer tank 110 reaches the preset level, the control unit controls the above components to stop operating accordingly.

[0045] It should also be emphasized that when the preset temperature value of the first liquid in the preheating buffer tank 110 is higher than the set temperature value, room temperature liquid is introduced into the inlet of the heating element 210 by controlling the first water inlet component 410 to adjust the temperature to reach the set temperature. Then, the first liquid that has reached the set temperature is discharged to the outlet unit 300 through the heating element 210 and the heating outlet pipe 230. At this time, even if the first liquid level is the preset liquid level value, the first water inlet component 410 still works, and it is sufficient to ensure that the inlet valve 422 is in the closed state. In specific settings, in order to more conveniently obtain the liquid flow rate entering the inlet of the heating element 210, the heating unit 200 also includes a first flow meter 260 installed in the heating inlet pipe 220.

[0046] To facilitate the introduction or interruption of room-temperature liquid into the inlet of the heating element 210 via the first water inlet assembly 410, the first water inlet assembly 410 further includes a first water inlet pipe 411, a water control valve 412 disposed on the first water inlet pipe 411, and a water delivery pump 413. One end of the first water inlet pipe 411 is used to introduce room-temperature liquid, and the other end of the first water inlet pipe 411 is connected to the inlet of the heating element 210. In a specific configuration, the end of the first water inlet pipe 411 away from the heating element 210 is connected to the water inlet point 430. The water control valve 412 is disposed at the end of the first water inlet pipe 411 away from the heating element 210, and the water delivery pump 413 is disposed at the end of the first water inlet pipe 411 close to the heating element 210. The water delivery pump 413 is used to transport room-temperature liquid to the inlet of the heating element 210. With the above settings, the opening and closing of the water control valve 412 and the water inlet pump 413 can control the flow of room temperature liquid from the first water inlet pipe 411 to the water inlet of the heating element 210, or cut off the flow.

[0047] In a specific configuration, to facilitate obtaining the flow rate of the room-temperature liquid in the first inlet pipe 411, the first inlet assembly 410 also includes a second flow meter 415 disposed in the first inlet pipe 411. To prevent backflow of the room-temperature liquid in the first inlet pipe 411, the first inlet assembly 410 also includes a negative pressure valve 414 disposed in the first inlet pipe 411.

[0048] See Figure 3As shown, to ensure that room-temperature liquid can be supplied to the inlet of the heating element 210 through the first inlet pipe 411 without affecting the flow of water from the control valve 412 to the inlet of the heating element 210, the first inlet assembly 410 further includes an inlet tank 416 disposed on the first inlet pipe 411. The inlet tank 416 is located between the control valve 412 and the inlet pump 413, and is used to buffer the room-temperature liquid. With the above configuration, when the control valve 412 is activated, the room-temperature liquid at the inlet point 430 is fed into the inlet tank 416 for buffering through the first inlet pipe 411. When the control valve 412 is closed, the first inlet pipe 411 can also supply the room-temperature liquid buffered in the inlet tank 416 to the inlet of the heating element 210.

[0049] To ensure that a certain amount of room temperature liquid is always buffered in the inlet tank 416, the heat exchange system 10 further includes a control unit and a second liquid level collector. The second liquid level collector is installed in the inlet tank 416 and is used to collect the second liquid level value of the room temperature liquid in the inlet tank 416. The control unit is communicatively connected to the second liquid level collector and the water control valve 412. The control unit is used to control the opening and closing of the water control valve 412 according to the second liquid level value.

[0050] With the above settings, when the room temperature liquid in the inlet tank 416 is lower than the predetermined liquid level, the control unit controls the opening of the water control valve 412; when the room temperature liquid in the inlet tank 416 reaches the predetermined liquid level, the control unit correspondingly controls the water control valve 412 to close. It should also be noted that when the second liquid level of the room temperature liquid in the inlet tank 416 does not change within a certain period, that is, when the room temperature liquid in the inlet tank 416 has not been used within a certain period, the control unit controls the start of the inlet water delivery pump 413 and the outlet valve 310. The outlet valve 310 controls the liquid flow from the heated outlet pipe 230 to the heated circulation pipe 240, thereby replenishing the room temperature liquid in the inlet tank 416 into the preheating buffer tank 110, ensuring the freshness of the room temperature liquid in the inlet tank 416. The control unit also prioritizes ensuring sufficient liquid in the preheating buffer tank 110 and replenishes it accordingly.

[0051] See Figure 1 , Figure 2 and Figure 3 As shown, in accordance with any of the above embodiments, the heat exchange system 10 is provided with an exhaust pipe 120 on the top of the preheating buffer tank 110 in order to facilitate the discharge of hot air from the preheating buffer tank 110.

[0052] To ensure users can directly obtain room temperature liquid, the water inlet unit 400 specifically includes a room temperature water pipe 440 and a room temperature valve 450 installed on the room temperature water pipe 440. One end of the room temperature water pipe 440 is used to introduce room temperature liquid, and the other end of the room temperature water pipe 440 is connected to the water outlet unit 300. The water outlet unit 300 is also used to discharge the room temperature liquid flowing in from the room temperature water pipe 440 to the outside of the heat exchange system 10 for user use. In a specific configuration, one end of the room temperature water pipe 440 is connected to the water inlet point 430, and the other end of the room temperature water pipe 440 is connected to the drain outlet pipe 320 of the water outlet unit 300. Specifically, the other end of the room temperature water pipe 440 is connected to the end of the drain outlet pipe 320 away from the outlet valve 310. With the above settings, when the user needs room temperature liquid, the outlet valve 310 is closed and the room temperature valve 450 is opened. The room temperature liquid is discharged from the heat exchange system 10 through the room temperature water pipe 440 and the drain outlet pipe 320 for the user to use.

[0053] This application also provides a temperature control method based on the heat exchange system 10 described in the second embodiment above, the temperature control method comprising: Step S1: Detect the first temperature value of the second liquid at the inlet of the heating element 210. In a specific setting, the heat exchange system 10 includes a detection unit 500. The detection unit 500 includes a first temperature detector 510 disposed at the junction of the heating inlet pipe 220 and the first inlet pipe 411 to the inlet of the heating element 210. The first temperature detector 510 is used to detect the first temperature value of the second liquid from the junction of the preheating buffer unit 100 and the first inlet pipe 411 to the inlet of the heating element 210. Step S2: Determine whether the first temperature value is the set temperature value through the control unit; Step S31: If the first temperature value is not the set temperature value, control the heaters in the water inlet unit 400, heating element 210, and / or preheating buffer unit 100 to operate, and repeat steps S1 and S2 until the first temperature value is the set temperature value; in specific operation, when the first temperature value is lower than the set temperature value, the control unit controls the heating element 210 to perform heating operation, the control unit controls the water outlet unit 300 to flow the second liquid to the preheating buffer unit 100, the heater in the preheating buffer unit 100 can also perform heating operation, the heating delivery pump 250 delivers the heated second liquid to the water inlet of the heating element 210, and then repeats steps S1 and S2 until the first temperature value is the set temperature value. The first temperature value is the set temperature value. When the first temperature value is higher than the set temperature value, the control unit controls the first water inlet component 410 in the water inlet unit 400 to transmit room temperature liquid to the water inlet of the heating element 210 to neutralize the excessively high temperature. Then, steps S1 and S2 are repeated until the first temperature value is the set temperature value. It should also be noted that the heating element 210 does not work at this time. If it is necessary to adjust a large amount of room temperature liquid for cooling operation, the control unit controls the water outlet unit 300 to flow the second liquid containing room temperature liquid to the preheating buffer unit 100. The heating delivery pump 250 then delivers the second liquid to the water inlet of the heating element 210 for judgment, that is, steps S1 and S2 are repeated. Step S32: If the first temperature value is the set temperature value, the control unit controls the water outlet unit 300 to discharge the second liquid to the outside of the heat exchange system 10. That is, the second liquid is discharged from the heat exchange system 10 through the water outlet valve 310 and the drain pipe 320 for the user to use.

[0054] To further ensure that the user's water temperature is the set temperature, specifically, after "determining the first temperature value to be the set temperature value" in step S32, the following steps are also included: The detection unit 500 detects the second temperature value of the second liquid at the outlet of the heating element 210; in a specific configuration, the detection unit 500 also includes a second temperature detector 520 disposed in the heating outlet pipe 230, which is used to detect the second temperature value of the second liquid at the inlet of the heating element 210. The control unit determines whether the second temperature value is the set temperature value. If the second temperature value is not the set temperature value, the heaters in the water outlet unit 300, water inlet unit 400, heating element 210, and / or preheating buffer unit 100 are controlled to operate, and steps S1, S2, and S31 are repeated until the second temperature value is the set temperature value. In specific operation, when the second temperature value is lower than the set temperature value, the control unit controls the water outlet unit 300 to flow the second liquid to the preheating buffer unit 100, and the heaters in the preheating buffer unit 100 can also perform heating operations. The heating transfer pump 250 delivers the second liquid to... Heating element 210 performs heating operation. The second liquid is circulated back to the inlet of heating element 210 after the above process. Steps S1, S2 and S31 are repeated until the second temperature value is the set temperature value. When the second temperature value is higher than the set temperature value, the control unit controls the first water inlet component 410 in the water inlet unit 400 to transfer room temperature liquid to the inlet of heating element 210 to neutralize the excessively high temperature. At this time, heating element 210 does not work. Steps S1, S2 and S31 are repeated until the second temperature value is the set temperature value. If the second temperature value is the set temperature value, the control unit controls the water outlet unit 300 to discharge the second liquid to the outside of the heat exchange system 10. That is, the second liquid is discharged from the heat exchange system 10 through the water outlet valve 310 and the drain pipe 320 for the user to use.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A heat exchange system, characterized in that, The heat exchange system includes a preheating buffer unit, a heating unit, and a water outlet unit, wherein: The preheating buffer unit is used to buffer a first liquid with a preset temperature value; The heating unit includes a heating element, a heating inlet pipe, and a heating outlet pipe. The two ends of the heating inlet pipe are connected to the preheating buffer unit and the inlet of the heating element, respectively. The two ends of the heating outlet pipe are connected to the outlet of the heating element and the outlet unit, respectively. The heating element is used to heat the first liquid input to the preheating buffer unit to a set temperature value. The outlet unit is used to discharge the first liquid flowing in through the heating element.

2. The heat exchange system according to claim 1, characterized in that, The heat exchange system further includes a water inlet unit, which is connected to the water inlet of the heating element and / or the preheating buffer unit. The water inlet unit is used to introduce or interrupt the flow of room temperature liquid into the water inlet of the heating element and / or the preheating buffer unit. The heating unit further includes a heating circulation pipe and a heating delivery pump located in the heating inlet pipe. One end of the heating circulation pipe is connected to the preheating buffer unit, and the other end of the heating circulation pipe is connected to the heating outlet pipe through the outlet unit. The water outlet unit is used to control the liquid flow in the heated water outlet pipe to stop or selectively flow to one of the heated circulation pipe and the water outlet unit.

3. The heat exchange system according to claim 2, characterized in that, The water inlet unit further includes a first water inlet component and / or a second water inlet component, wherein: The first water inlet assembly is connected to the water inlet of the heating element, and the first water inlet assembly is used to introduce or cut off the flow of room temperature liquid into the water inlet of the heating element. The second water inlet component is connected to the preheating buffer unit, and the second water inlet component is used to introduce or cut off the flow of the room temperature liquid.

4. The heat exchange system according to claim 2, characterized in that, The preheating buffer unit includes a preheating buffer box and a heater disposed inside the preheating buffer box. The preheating buffer box is connected to the heating inlet pipe and the heating circulation pipe.

5. The heat exchange system according to claim 3, characterized in that, The second water inlet assembly includes a second water inlet pipe and a water inlet valve disposed on the second water inlet pipe. The second water inlet pipe is connected to the preheating buffer unit and is used to introduce the room temperature liquid. The heat exchange system further includes a control unit and a first liquid level collector. The first liquid level collector is disposed in the preheating buffer unit and is used to collect the first liquid level value of the liquid in the preheating buffer unit. The control unit is communicatively connected to the first liquid level collector, the inlet valve and the first inlet assembly. The control unit is used to control the operation of the first inlet assembly and the inlet valve according to the first liquid level value.

6. The heat exchange system according to claim 3, characterized in that, The first water inlet assembly includes a first water inlet pipe, a water control valve disposed on the first water inlet pipe, and a water inlet delivery pump, wherein: One end of the first water inlet pipe is used to introduce the room temperature liquid, and the other end of the first water inlet pipe is connected to the water inlet of the heating element; The water control valve is located at the end of the first water inlet pipe furthest from the heating element; The water inlet pump is located at one end of the first water inlet pipe near the heating element, and the water inlet pump is used to transport the room temperature liquid to the water inlet of the heating element.

7. The heat exchange system according to claim 6, characterized in that, The first water inlet assembly further includes a water inlet tank disposed on the first water inlet pipe. The water inlet tank is located between the water control valve and the water inlet pump, and the water inlet tank is used to buffer the room temperature liquid.

8. The heat exchange system according to claim 7, characterized in that, The heat exchange system further includes a control unit and a second liquid level collector. The second liquid level collector is installed in the water inlet tank and is used to collect the second liquid level value of the room temperature liquid in the water inlet tank. The control unit is communicatively connected to the second liquid level collector and the water control valve. The control unit is used to control the opening and closing of the water control valve according to the second liquid level value.

9. The heat exchange system according to claim 2, characterized in that, The water inlet unit also includes a room temperature water pipe and a room temperature valve installed on the room temperature water pipe. One end of the room temperature water pipe is used to introduce the room temperature liquid, and the other end of the room temperature water pipe is connected to the water outlet unit. The water outlet unit is also used to discharge the room temperature liquid that flows in through the room temperature water pipe.

10. A temperature control method for a heat exchange system according to any one of claims 2-9, characterized in that, The temperature control method includes: S1. Detect the first temperature value of the second liquid at the inlet of the heating element; S2. Determine whether the first temperature value is the set temperature value; S31. If not, control the operation of the water inlet unit, the heating unit and the water outlet unit, and repeat steps S1 and S2 until the first temperature value is the set temperature value. S32. If so, control the water outlet unit to discharge the second liquid to the outside of the heat exchange system.

11. The temperature control method for the heat exchange system according to claim 10, characterized in that, Step S31 also includes the following steps: When the first temperature value is lower than the set temperature value, the heating element performs heating operation, the water outlet unit controls the second liquid to flow to the preheating buffer unit, the heating delivery pump delivers the second liquid to the water inlet of the heating element, and then repeats steps S1 and S2 until the first temperature value is the set temperature value. When the first temperature value is higher than the set temperature value, the water inlet unit transmits the room temperature liquid to the water inlet of the heating element, and then repeats steps S1 and S2 until the first temperature value is the set temperature value.

12. The temperature control method for the heat exchange system according to claim 10, characterized in that, After "determining the first temperature value to be the set temperature value" in step S32, the following steps are also included: The second temperature value of the second liquid at the outlet of the heating element is detected; Determine whether the second temperature value is the set temperature value; If not, control the operation of the water outlet unit, the water inlet unit, and the heating element, and repeat steps S1, S2, and S31 until the second temperature value is the set temperature value; If so, control the water outlet unit to discharge the second liquid outside the heat exchange system.

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