Water production structure and water purification system

Abstract

The present invention discloses a water production structure and a water purification system, the water production structure comprises a heat exchanger, a heating water tank, a buffer water tank, a reflux branch and a boiled water branch, the buffer water tank is used to supply water of a first temperature to the heat exchanger, the heating water tank is used to supply water of a second temperature to the heat exchanger, so that the water of the first temperature and the water of the second temperature exchange heat in the heat exchanger, wherein the first temperature and the second temperature are not equal; one end of the reflux branch and one end of the boiled water branch are both connected to the water outlet of the heat exchanger, the other end of the reflux branch is connected to the heating water tank and / or the buffer water tank, and the other end of the boiled water branch is used to be connected to the first water inlet of the water purification system; wherein the reflux branch and the boiled water branch are set to be selectively connected. When the water production structure and the water production system are in use, it can ensure that the temperature of boiled water taken for the first time is at the temperature required by the user, thereby ensuring the user's experience.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and in particular to a water production structure and a water purification system. Background Art

[0002] Boiled water, also known as cold boiled water or frozen boiled water, is the most common drinking water in daily life. It is bland and tasteless, very common, but it has a very important regulating effect on the physiological mechanism of the human body.

[0003] Traditional water purifiers generally use heat exchange to make boiled water. When preparing boiled water, hot water and cold water need to be exchanged in the heat exchange tube. If the interval between two water extractions is long, the residual water in the heat exchange tube will cool down, causing the first boiled water to have a lower temperature, which affects user use. Summary of the invention

[0004] Based on this, in order to address the problem that when traditional water purifiers prepare boiled water, the temperature of the boiled water taken for the first time is low, which affects user use, a water production structure and a water purification system are proposed. When used, the water production structure and the water production system can ensure that the temperature of the boiled water taken for the first time is at the temperature required by the user, thereby ensuring the user experience.

[0005] The specific technical solutions are as follows:

[0006] On the one hand, the present application relates to a water production structure, which is applied to a water purification system, the water purification system includes a water purifier, the water production structure includes a heat exchanger, a heating water tank, a buffer water tank, a reflux branch and a cool boiled water branch, the buffer water tank is used to supply water of a first temperature to the heat exchanger, and the heating water tank is used to supply water of a second temperature to the heat exchanger, so that the water of the first temperature and the water of the second temperature exchange heat in the heat exchanger, wherein the first temperature and the second temperature are not equal; one end of the reflux branch and one end of the cool boiled water branch are both connected to the water outlet of the heat exchanger, the other end of the reflux branch is connected to the heating water tank and / or the buffer water tank, and the other end of the cool boiled water branch is used to connect to the first water inlet of the water purification system; wherein the reflux branch and the cool boiled water branch are set to be selectively turned on, when the water production structure is in the state of producing cool boiled water, when the set condition of needing to recover the water in the heat exchanger is met, the reflux branch is closed after the reflux branch is opened for a certain period of time, and the cool boiled water branch is opened.

[0007] The technical solution is further described below:

[0008] In one embodiment, the reflux branch includes a first control valve and a first pipeline, one end of the first pipeline is connected to the water outlet of the heat exchanger, the other end of the first pipeline is connected to the heating water tank and / or the buffer water tank, and the first control valve is arranged on the first pipeline; and / or

[0009] The cool and white branch circuit includes a second control valve and a second pipe, one end of the second pipe is connected to the water outlet of the heat exchanger, and the other end of the second pipe is used to connect to the first water inlet of the water purification system, and the second control valve is arranged on the second pipe.

[0010] In one embodiment, the heat exchanger is formed with a first heat exchange channel and a second heat exchange channel capable of heat exchange with the first heat exchange channel, the buffer water tank is used to supply water of a first temperature to the first heat exchange channel, the heating water tank is used to supply water of a second temperature to the second heat exchange channel, the water outlet of the first heat exchange channel is connected to the heating water tank, and one end of the reflux branch and one end of the cool branch branch are both connected to the water outlet of the second heat exchange channel.

[0011] In one embodiment, the first heat exchange channel is inserted into the second heat exchange channel and is gap-matched with the second heat exchange channel; or the second heat exchange channel is inserted into the first heat exchange channel and is gap-matched with the first heat exchange channel.

[0012] In one embodiment, the first heat exchange channel and the second heat exchange channel are both spiral.

[0013] In one embodiment, the water production structure further includes a first branch, a second branch, a third branch, a fourth branch and a water pump, the heating water tank is formed with a first water outlet, the first water outlet is connected to the water inlet of the water pump through the first branch, and the water outlet of the buffer water tank is connected to the water inlet of the water pump through the second branch;

[0014] The third branch connects the water outlet of the water pump and the water inlet of the second heat exchange channel, the fourth branch connects the water outlet of the water pump and the water inlet of the first heat exchange channel, the first branch and the third branch form a hot water branch, the second branch and the fourth branch form a first boiled water branch, and the hot water branch and the first boiled water branch are set to be selectively connected.

[0015] In one embodiment, the first branch also includes a third control valve for controlling the opening or closing of the first branch; the second branch also includes a fourth control valve for controlling the opening or closing of the second branch, and the hot water branch and the first boiled water branch are selectively turned on by correspondingly controlling the opening and closing of the third control valve and the fourth control valve.

[0016] In one embodiment, the water production structure also includes a second boiled water branch, the heating water tank is also provided with a second water outlet, the second boiled water branch connects the second water outlet and the water inlet of the second heat exchange channel, wherein the second boiled water branch and the first boiled water branch are configured to be turned on or off at the same time.

[0017] In one embodiment, the water production structure further includes a first two-way valve, a first common pipeline and a second common pipeline, the second boiled water branch includes a third pipeline, the third branch includes a fourth pipeline, one end of the third pipeline is connected to the second water outlet, one end of the fourth pipeline is connected to the water outlet of the water pump, the other end of the fourth pipeline and the other end of the third pipeline are both connected to the water inlet of the first two-way valve through the first common pipeline, one of the water outlets of the first two-way valve is connected to the water inlet of the second heat exchange channel, and the other water outlet of the first two-way valve is used to communicate with the drain of the water purification system;

[0018] The third pipeline, the first common pipeline and the second common pipeline are connected in sequence to form the second boiled water branch, and the fourth pipeline, the first common pipeline and the second common pipeline are connected in sequence to form the third branch.

[0019] In one embodiment, the water production structure further includes a fifth control valve, which is disposed on the fourth pipeline and is used to control the opening or closing of the fourth pipeline.

[0020] In one embodiment, the water production structure also includes a sixth control valve and a fifth pipe, the fifth pipe connects the water outlet of the first heat exchange channel and the water inlet of the heating water tank, and the sixth control valve is arranged on the fifth pipe to control the opening or closing of the fifth pipe.

[0021] In one of the embodiments, the water production structure further includes a seventh control valve and an exhaust pipe, the heating water tank further includes an exhaust hole, and the exhaust pipe is connected to the exhaust hole through the seventh control valve.

[0022] On the other hand, the present application also relates to a water purification system, comprising the water production structure in any of the above embodiments.

[0023] When the above-mentioned water production structure and the water purification system including the water production structure are in use, the buffer water tank supplies water of the first temperature to the heat exchanger, and the heating water tank supplies water of the second temperature to the heat exchanger. Taking the production of boiled water as an example, the water of the first temperature can be water of normal temperature, and the water of the second temperature can be hot water. The water of normal temperature and the hot water are heat-exchanged in the heat exchanger to obtain boiled water. Furthermore, the water production structure includes a reflux branch and a boiled water branch. The reflux branch and the boiled water branch are configured to be selectively turned on. When the water production structure starts to produce boiled water, the reflux branch is selected to be turned on. At this time, the residual water in the heat exchanger will flow back to the buffer water tank or the heating water tank along the reflux branch. After a certain period of time, the boiled water branch is turned on and the reflux branch is closed. At this time, the temperature of the boiled water collected can meet the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0026] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0027] Figure 1 This is a schematic diagram of the structure of a water purification system in one embodiment;

[0028] Figure 2 This is a schematic structural diagram of a heat exchanger in one embodiment;

[0029] Figure 3 A schematic diagram of a state in which a water production structure in an embodiment is in the state of recovering residual water in a heat exchanger;

[0030] Figure 4 A schematic diagram of a water production structure in one embodiment in a state of producing hot water;

[0031] Figure 5 A schematic diagram of a water-making structure in one embodiment in a state of making boiled water;

[0032] Figure 6 It is a schematic diagram of a water production structure in one embodiment in a state of producing water at room temperature.

[0033] Description of reference numerals:

[0034] 10. Water purification system; 20. Water production structure; 100. Heat exchanger; 110. First heat exchange channel; 120. Second heat exchange channel; 200. Heating water tank; 300. Buffer water tank; 400. Reflux branch; 410. First control valve; 420. First pipeline; 500. Cool and white water branch; 510. Second control valve; 520. Second pipeline; 600. Hot water branch; 610. First branch; 612. Third control valve; 620. Third branch; 622. Fourth pipeline; 624. Fifth control valve; 700. First cool and white water branch; 710 , the second branch; 712, the fourth control valve; 720, the fourth branch; 800, the second boiled water branch; 810, the third pipeline; 820, the first common pipeline; 830, the second common pipeline; 900, the water pump; 1100, the first two-way valve; 1200, the second two-way valve; 2100, the fifth pipeline; 2200, the sixth control valve; 2300, the seventh control valve; 2400, the exhaust pipeline; 30, the water purifier; 3100, the first water inlet of the water purification system; 3200, the second water inlet of the water purification system; 3300, the drain outlet of the water purification system. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] Water at 45°C is most suitable for human drinking and is also suitable for making milk for babies (the temperature for making milk is generally 38°C-50°C). It is called "golden water". Traditional water purifiers 30 generally use heat exchange to make boiled water. When preparing boiled water, it is necessary to exchange heat in a heat exchange tube with hot water and cold water. If the interval between two water extractions is long, the residual water in the heat exchange tube will cool down, causing the outlet temperature of the boiled water taken for the first time to be lower, that is, less than 45°C, affecting the user's use. Based on this, the present application proposes a water making structure 20 and a water purification system 10. When in use, the water making structure 20 and the water making system can ensure that the temperature of the boiled water taken for the first time is at the temperature required by the user, thereby ensuring the user's use experience.

[0039] Please refer to Figure 1 In one embodiment, a water purification system 10 includes a water purifier 30 and a water production structure 20. The water production structure 20 is used to produce hot water, boiled water and room temperature water. The water purifier 30 is used to supply water to the water production structure 20.

[0040] Please refer to Figure 1 In some embodiments, the water production structure 20 includes a heat exchanger 100, a heating water tank 200 and a buffer water tank 300. The buffer water tank 300 is used to supply water of a first temperature to the heat exchanger 100, and the heating water tank 200 is used to supply water of a second temperature to the heat exchanger 100, so that the water of the first temperature and the water of the second temperature exchange heat in the heat exchanger 100, wherein the first temperature and the second temperature are not equal. In this embodiment, the water of the first temperature may be normal temperature water, the water in the buffer water tank 300 may be stored by itself, or the water purifier 30 may continuously supply the buffer water tank 300; the water of the second temperature may be hot water, which is heated by the heating water tank 200 itself, or is heated by an external device and then transported to the heating water tank 200.

[0041] Please refer to 1 and Figure 2 In some embodiments, the heat exchanger 100 is formed with a first heat exchange channel 110 and a second heat exchange channel 120 capable of heat exchange with the first heat exchange channel 110, the buffer water tank 300 is used to supply water of a first temperature to the first heat exchange channel 110, and the heating water tank 200 is used to supply water of a second temperature to the second heat exchange channel 120.

[0042] Specifically, in order to allow sufficient heat exchange between the normal temperature water in the first heat exchange channel 110 and the hot water in the second heat exchange channel 120, in one embodiment, the first heat exchange channel 110 is inserted into the second heat exchange channel 120 and matched with the gap of the second heat exchange channel 120. At this time, the normal temperature water in the buffer water tank 300 flows in the gap formed between the first heat exchange channel 110 and the second heat exchange channel 120, and the hot water in the heating water tank 200 flows in the second heat exchange channel 120. At this time, the normal temperature water can surround the hot water, thereby improving the heat exchange efficiency between the normal temperature water and the hot water.

[0043] Please refer to Figure 2 In other embodiments, the second heat exchange channel 120 is inserted into the first heat exchange channel 110 and is in gap with the first heat exchange channel 110. At this time, the hot water in the heating water tank 200 flows in the second heat exchange channel 120, and the normal temperature water in the buffer water tank 300 flows in the gap formed between the first heat exchange channel 110 and the second heat exchange channel 120. At this time, the hot water can surround the normal temperature water, thereby improving the heat exchange efficiency between the normal temperature water and the hot water.

[0044] For further information, please refer to Figure 2 , the first heat exchange channel 110 and the second heat exchange channel 120 are both spiral. Thus, when one of the first heat exchange channel 110 and the second heat exchange channel 120 is inserted into the other, water in the first heat exchange channel 110 and the second heat exchange channel 120 can flow in a spiral manner, so that the water in the two channels can fully exchange heat.

[0045] Please refer to Figure 1 and Figure 3 In some embodiments, the water production structure 20 further includes a return branch 400 and a cool branch 500. One end of the return branch 400 and one end of the cool branch 500 are both connected to the water outlet of the heat exchanger 100, and the other end of the return branch 400 is connected to the heating water tank 200 or the buffer water tank 300 or both. The other end of the cool branch 500 is used to communicate with the first water inlet 3100 of the water purification system.

[0046] For details, please refer to Figures 1 to 3 One end of the return branch 400 is connected to the water outlet of the second heat exchange channel 120, and the other end of the return branch 400 is connected to the heating water tank 200 or the buffer water tank 300 or both. In this way, the residual water in the second heat exchange channel 120 can be connected to the heating water tank 200 or the buffer water tank 300 or both along the return branch 400.

[0047] For details, please refer to Figures 1 to 3 One end of the cool boiled water branch circuit 500 is connected to the water outlet of the second heat exchange channel 120, and the other end of the cool boiled water branch circuit 500 is used to connect with the first water inlet 3100 of the water purification system. In this way, when the water production structure 20 is in the cool boiled water production mode, the water after heat exchange in the second heat exchange channel 120 can be transported through the cool boiled water branch circuit 500.

[0048] Furthermore, the reflux branch 400 and the cool boiled water branch 500 are set to be selectively turned on. When the water-making structure 20 is in the state of making cool boiled water, when the set conditions for recovering the water in the heat exchanger 100 are met, the reflux branch 400 is closed after opening the reflux branch 400 for a certain period of time, and the cool boiled water branch 500 is opened. When making cool boiled water, the reflux branch 400 can be opened first. At this time, the residual water in the heat exchanger 100 is first discharged to the heating water tank 200 or the buffer water tank 300 or to the heating water tank 200 and the buffer water tank 300 at the same time. After a certain period of time, the reflux branch 400 is closed and the cool boiled water branch 500 is opened to receive the prepared cool boiled water. It can be understood that the certain period of time can be set as needed, and can be a few seconds or a few minutes.

[0049] It is understandable that the setting condition can be that the water making structure 20 makes boiled water for the first time after not making boiled water for a period of time. Of course, the setting condition can be set by the user, and will not be described in detail here.

[0050] Please continue to refer to Figures 1 to 3 In some embodiments, the reflux branch 400 includes a first control valve 410 and a first pipe 420, one end of the first pipe 420 is in communication with the water outlet of the heat exchanger 100. Specifically, one end of the first pipe 420 is in communication with the water outlet of the second heat exchange channel 120, the other end of the first pipe 420 is in communication with the heating water tank 200 or the buffer water tank 300 or both, and the first control valve 410 is disposed on the first pipe 420. In this way, the opening and closing of the first pipe 420 is controlled by the first control valve 410, thereby controlling the opening and closing of the reflux branch 400.

[0051] Please refer to 1 to Figure 3 In some embodiments, the cool and white branch circuit 500 includes a second control valve 510 and a second pipe 520, and one end of the second pipe 520 is connected to the water outlet of the heat exchanger 100. Specifically, one end of the second pipe 520 is connected to the water outlet of the second heat exchange channel 120, and the other end of the second pipe 520 is used to communicate with the first water inlet 3100 of the water purification system. The second control valve 510 is disposed on the second pipe 520, and the opening and closing of the cool and white branch circuit 500 is controlled by the second control valve 510.

[0052] Optionally, both the first control valve 410 and the second control valve 510 may be solenoid valves.

[0053] Specifically, the selective opening of the return branch 400 and the cold boiled water branch 500 is achieved by controlling the opening and closing of the first control valve 410 and the second control valve 510. When the water production structure 20 starts to produce cold boiled water, the first control valve 410 is first opened and the second control valve 510 is closed, and then the return branch 400 is opened and the cold boiled water branch 500 is closed. At this time, the residual water in the heat exchanger 100 can be drained to avoid the problem of the low temperature of the first cup of cold boiled water caused by the residual water. After a certain period of time, the first control valve 410 is closed and the second control valve 510 is opened. At this time, the water received along the first water inlet 3100 of the water purification system is cold boiled water with a suitable temperature.

[0054] When the above-mentioned water production structure 20 and the water purification system 10 including the water production structure 20 are in use, the buffer water tank 300 supplies water of the first temperature to the heat exchanger 100, and the heating water tank 200 supplies water of the second temperature to the heat exchanger 100. Taking the production of boiled water as an example, the water of the first temperature can be room temperature water, and the water of the second temperature can be hot water. The room temperature water and the hot water are heat exchanged in the heat exchanger 100 to obtain boiled water. Furthermore, the water production structure 20 includes a reflux branch 400 and a boiled water branch 500, and the reflux branch 400 and the boiled water branch 500 are configured to be selectively turned on. When the water production structure 20 starts to produce boiled water, the reflux branch 400 is selected to be turned on. At this time, the residual water in the heat exchanger 100 will flow back to the buffer water tank 300 or the heating water tank 200 along the reflux branch 400. After a certain period of time, the boiled water branch 500 is turned on and the reflux branch 400 is closed. At this time, the temperature of the boiled water can meet user needs.

[0055] The following will specifically describe the implementation methods of each mode of the water production structure 20 in conjunction with the embodiments.

[0056] Please refer to Figure 1 In some embodiments, the water production structure 20 also includes a first branch 610, a second branch 710, a third branch 620, a fourth branch 720 and a water pump 900. The first branch 610 and the third branch 620 form a hot water branch 600, and the second branch 710 and the fourth branch 720 form a first boiled water branch 700.

[0057] Please refer to Figures 1 to 3The heating water tank 200 is formed with a first water outlet (not shown), the hot water branch 600 is connected to the first water outlet and the water inlet of the second heat exchange channel 120, and the first cold boiled water branch 700 is connected to the water outlet of the buffer water tank 300 and the water inlet of the first heat exchange channel 110. The water production structure 20 also includes a second cold boiled water branch 800, the heating water tank 200 is also provided with a second water outlet (not shown), and the second cold boiled water branch 800 is connected to the second water outlet and the water inlet of the second heat exchange channel 120, wherein the second cold boiled water branch 800 and the first cold boiled water branch 700 are configured to be simultaneously turned on or simultaneously turned off, and the hot water branch 600 and the first cold boiled water branch 700 are configured to be selectively turned on.

[0058] Please refer to Figure 1 and Figure 5 , Figure 5 The water making structure 20 is shown in the boiled water making mode. When the water making structure 20 is in use, when boiled water needs to be made, the first boiled water branch 700 and the second boiled water branch 800 are connected, and the hot water branch 600 is closed; please refer to Figure 1 and Figure 4 . Figure 4 It is shown that the water production structure 20 is in the hot water production mode. When hot water needs to be produced, the hot water branch 600 is turned on, and the first boiled water branch 700 and the second boiled water branch 800 are closed.

[0059] Please refer to Figures 1 to 4 In some embodiments, as an optional structure of the hot water branch 600 , the first water outlet is connected to the water inlet of the water pump 900 through the first branch 610 , and the third branch 620 is connected to the water outlet of the water pump 900 and the water inlet of the second heat exchange channel 120 .

[0060] Please refer to Figures 1 to 5 In some embodiments, as an optional structure of the first boiled water branch 700, the water outlet of the buffer water tank 300 is connected to the water inlet of the water pump 900 through the second branch 710, and the fourth branch 720 connects the water outlet of the water pump 900 and the water inlet of the first heat exchange channel 110.

[0061] In some embodiments, the second branch 710 and the first branch 610 may be directly connected to the water inlet of the water pump 900 .

[0062] Please refer to Figure 1In other embodiments, the first branch 610 and the second branch 710 are connected to the water inlet of the water pump 900 through a common pipe. Since the first branch 610 and the second branch 710 are not opened at the same time, under the action of the water pump 900, only the water in the buffer water tank 300 and the heating water tank 200 can be transmitted along its corresponding branch. Therefore, the water in the buffer water tank 300 and the heating water tank 200 will not be mixed before entering the heat exchanger 100. In this way, the setting of pipes can be saved.

[0063] To control the opening and closing of the first branch 610 and the second branch 710, please refer to Figure 1 , Figure 4 and Figure 5 In some embodiments, the first branch 610 further includes a third control valve 612 for controlling the first branch 610 to be turned on or off; the second branch 710 further includes a fourth control valve 712 for controlling the second branch 710 to be turned on or off. The third control valve 612 and the fourth control valve 712 may be solenoid valves. In order to prevent water from flowing back, corresponding one-way valves may be provided on both the first branch 610 and the second branch 710.

[0064] Please refer to Figures 1 to 3 In some embodiments, the water production structure 20 further includes a first two-way valve 1100, a first common pipeline 820 and a second common pipeline 830, and the second cold boiled water branch 800 includes a third pipeline 810, and the third pipeline 810, the first common pipeline 820 and the second common pipeline 830 are sequentially connected to form the second cold boiled water branch 800. Among them, one end of the third pipeline 810 is connected to the second water outlet, and the other end of the third pipeline 810 is connected to the water inlet of the first two-way valve 1100 through the first common pipeline 820, and one of the water outlets of the first two-way valve 1100 is connected to the water inlet of the second heat exchange channel 120.

[0065] Please refer to Figures 1 to 3 In some embodiments, the third branch 620 includes a fourth pipe 622, and the fourth pipe 622, the first common pipe 820 and the second common pipe 830 are connected in sequence to form the third branch 620. One end of the fourth pipe 622 is connected to the water outlet of the water pump 900, and the other end of the fourth pipe 622 is connected to the water inlet of the first two-way valve 1100 through the first common pipe 820. The other water outlet of the first two-way valve 1100 is used to communicate with the drain 3300 of the water purification system. In this way, when it is necessary to discharge the water in the heating water tank 200, the first branch 610, the water pump 900 and the third branch 620 are controlled to be connected, and the corresponding water outlet is opened by controlling the first two-way valve 1100 to transport the water to the drain 3300 of the water purification system.

[0066] Please refer to Figure 1and Figure 4 In some embodiments, the water production structure 20 further includes a fifth control valve 624, which is disposed in the fourth pipeline 622 and is used to control the opening or closing of the fourth pipeline 622. Figure 1 and Figure 5 In some embodiments, the water production structure 20 further includes a fifth pipeline 2100 and a sixth control valve 2200. The fifth pipeline 2100 is connected to the water outlet of the first heat exchange channel 110 and the water inlet of the heating water tank 200. The sixth control valve 2200 is disposed on the fifth pipeline 2100 to control the opening or closing of the fifth pipeline 2100. The fifth control valve 624 and the sixth control valve 2200 may be solenoid valves.

[0067] Please refer to Figure 1 and Figure 4 , Figure 4 The water production structure 20 is shown to be in the hot water production mode. When producing hot water, the third control valve 612 is opened and the first branch 610 is connected, and the fifth control valve 624 is opened and the fourth pipe 622 is connected. Under the action of the water pump 900, the hot water in the heating water tank 200 is transported along the first branch 610 and the third branch 620, and the hot water is transported to the second heat exchange channel 120 by switching the outlet of the first two-way valve 1100. At this time, the sixth control valve 2200 is closed and the fifth pipe 2100 is controlled to be closed, and the water transported from the second heat exchange channel 120 to the first water inlet 3100 of the water purification system is hot water.

[0068] Please refer to Figure 1 The heating water tank 200 is a top-out water heating tank. The water inlet of the heating water tank 200 is set at the bottom of the heating water tank 200, and the second water outlet is set at the top of the heating water tank 200. In this way, when the water in the first heat exchange channel 110 enters the heating water tank 200 along the water inlet of the heating water tank 200, the water at the top of the heating water tank 200 will be squeezed out and discharged from the second boiled water branch 800 along the second water outlet and then into the second heat exchange channel 120.

[0069] Please refer to Figure 1 In one embodiment, the water production structure 20 further includes a second two-way valve 1200, the water inlet of the second two-way valve 1200 is used to communicate with the water purifier 30, one of the water outlets of the second two-way valve 1200 is connected to the water inlet of the buffer water tank 300, and the other water outlet of the second two-way valve 1200 is used to communicate with the second water inlet 3200 of the water purification system. Please refer to Figure 6 , Figure 6The schematic diagram of the water production structure 20 in the mode of producing normal temperature water is shown. When normal temperature water needs to be produced, the other outlet of the second two-way valve 1200 is turned on, so that the water purified by the water purifier 30 is discharged from the second water inlet 3200 of the water purification system. The second water inlet 3200 of the water purification system can be a normal temperature water inlet. Further, when boiled water needs to be produced, only one of the outlets of the second two-way valve 1200 needs to be turned on. Further, the pressure of the water purifier 30 can be controlled by controlling the opening and closing of the second two-way valve 1200, thereby controlling the opening and closing of the water purifier 30.

[0070] Traditional water purifiers are generally equipped with high-pressure switches. When the high-pressure switch senses that the pressure at the water inlet of the water purifier reaches or exceeds 0.25Mpa (the general error is ±0.05Mpa), the signal is fed back to the control module, and the control module controls the pump in the water purifier to stop running and the whole machine stops making water. When the high-pressure switch senses that the pressure reaches or falls below 0.15Mpa (the general error is ±0.05Mpa), the signal is fed back to the control module, and the control module controls the pump to start, and the whole machine starts making water. Because boiled water is produced by heat exchange between hot water and room temperature water, in order to ensure the stability of the final outlet temperature of boiled water, the water inlet flow rate of hot water and room temperature water must be kept constant. Because the flow rate of large-flow models is generally greater than 1L / min, in order to adapt to all models, the water inlet flow rate of water (i.e. room temperature water) entering the water purifier must be limited to about 1L / min. If the existing flow limiting valve is used, once the water inlet flow is restricted, the pressure at the water inlet end of the water purifier will definitely rise. After the large-flow water purifier limits the flow to 1L / min, the water inlet pressure will exceed 0.25Mpa, and the water purifier will stop making water.

[0071] Please refer to Figure 1 In some embodiments, the water purified by the water purifier 30 enters the buffer water tank 300. Thus, the setting of the buffer water tank 300 can pre-store the water discharged by the water purifier 30, so as to prevent the water inlet end of the water purifier 30 from being over-pressured due to controlling the flow of the water purifier 30, thereby preventing the machine from shutting down.

[0072] Please refer to Figure 1 In some embodiments, the water production structure 20 further includes a seventh control valve 2300 and an exhaust pipe 2400, the heating water tank 200 further includes an exhaust hole, and the exhaust pipe 2400 is connected to the exhaust hole through the seventh control valve 2300. In this way, when the water in the heating water tank 200 is heated, the seventh control valve 2300 is opened to discharge the water vapor generated by the heating water tank 200 during heating through the exhaust hole.

[0073] According to the description of the aforementioned embodiment, the water-making structure 20 can have a hot water making mode, a boiled water making mode, a room temperature water making mode and a drainage mode for removing residual water in the room temperature water tank. It can be understood that when one of the modes is in operation, the corresponding modes are in a closed state; in other words, the pipeline parts corresponding to the other modes are all in a closed state.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0076] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0077] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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.

[0078] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A water production structure, applied to a water purification system, the water purification system comprising a water purifier, characterized in that: include: Heat exchanger; a heating water tank and a buffer water tank, wherein the buffer water tank is used to supply water at a first temperature to the heat exchanger, and the heating water tank is used to supply water at a second temperature to the heat exchanger, so that the water at the first temperature and the water at the second temperature exchange heat in the heat exchanger, wherein the first temperature and the second temperature are not equal; and A reflux branch and a cool boiled water branch, one end of the reflux branch and one end of the cool boiled water branch are both connected to the water outlet of the heat exchanger, the other end of the reflux branch is connected to the heating water tank and / or the buffer water tank, and the other end of the cool boiled water branch is used to be connected to the first water inlet of the water purification system; wherein the reflux branch and the cool boiled water branch are configured to be selectively connected, and when the water making structure is in the state of making cool boiled water, when the set condition for recycling the water in the heat exchanger is met, the reflux branch is closed after being opened for a certain period of time, and the cool boiled water branch is opened; The heat exchanger is formed with a first heat exchange channel and a second heat exchange channel capable of heat exchange with the first heat exchange channel, the water outlet of the first heat exchange channel is connected to the heating water tank, and one end of the reflux branch and one end of the cool branch are both connected to the water outlet of the second heat exchange channel; The water production structure further includes a first branch, a second branch, a third branch, a fourth branch and a water pump, the heating water tank is formed with a first water outlet, the first water outlet is connected to the water inlet of the water pump through the first branch, the water outlet of the buffer water tank is connected to the water inlet of the water pump through the second branch, and the first branch and the second branch are connected to the water inlet of the water pump through a common pipeline; The third branch is connected to the water outlet of the water pump and the water inlet of the second heat exchange channel, the fourth branch is connected to the water outlet of the water pump and the water inlet of the first heat exchange channel, the first branch and the third branch form a hot water branch, the second branch and the fourth branch form a first boiled water branch, and the hot water branch and the first boiled water branch are configured to be selectively connected; The water production structure also includes a second boiled water branch, and the heating water tank is also provided with a second water outlet, the second boiled water branch connects the second water outlet and the water inlet of the second heat exchange channel, wherein the second boiled water branch and the first boiled water branch are configured to be turned on or off at the same time.

2. The water production structure according to claim 1, characterized in that: The reflux branch includes a first control valve and a first pipeline, one end of the first pipeline is connected to the water outlet of the heat exchanger, the other end of the first pipeline is connected to the heating water tank and / or the buffer water tank, and the first control valve is arranged on the first pipeline; and / or The cool and white branch circuit includes a second control valve and a second pipe, one end of the second pipe is connected to the water outlet of the heat exchanger, and the other end of the second pipe is used to connect to the first water inlet of the water purification system, and the second control valve is arranged on the second pipe.

3. The water production structure according to claim 1, characterized in that: The first heat exchange channel is inserted into the second heat exchange channel and is gap-matched with the second heat exchange channel; or the second heat exchange channel is inserted into the first heat exchange channel and is gap-matched with the first heat exchange channel.

4. The water production structure according to claim 3, characterized in that: The first heat exchange channel and the second heat exchange channel are both spiral-shaped.

5. The water production structure according to claim 1, characterized in that: The first branch also includes a third control valve for controlling the opening or closing of the first branch; the second branch also includes a fourth control valve for controlling the opening or closing of the second branch, and the hot water branch and the first boiled water branch are selectively turned on by correspondingly controlling the opening and closing of the third control valve and the fourth control valve.

6. The water production structure according to claim 1, characterized in that: It also includes a first two-way valve, a first common pipeline and a second common pipeline, the second boiled water branch includes a third pipeline, the third branch includes a fourth pipeline, one end of the third pipeline is connected to the second water outlet, one end of the fourth pipeline is connected to the water outlet of the water pump, the other end of the fourth pipeline and the other end of the third pipeline are connected to the water inlet of the first two-way valve through the first common pipeline, one of the water outlets of the first two-way valve is connected to the water inlet of the second heat exchange channel, and the other water outlet of the first two-way valve is used to communicate with the drain of the water purification system; The third pipeline, the first common pipeline and the second common pipeline are connected in sequence to form the second boiled water branch, and the fourth pipeline, the first common pipeline and the second common pipeline are connected in sequence to form the third branch.

7. The water production structure according to claim 6, characterized in that: It also includes a fifth control valve, which is arranged on the fourth pipeline and is used to control the opening or closing of the fourth pipeline.

8. The water production structure according to any one of claims 1 to 7, characterized in that: It also includes a sixth control valve and a fifth pipeline, the fifth pipeline is connected to the water outlet of the first heat exchange channel and the water inlet of the heating water tank, and the sixth control valve is arranged on the fifth pipeline to control the opening or closing of the fifth pipeline.

9. The water production structure according to claim 1, characterized in that: It also includes a seventh control valve and an exhaust pipe. The heating water tank also includes an exhaust hole. The exhaust pipe is connected to the exhaust hole through the seventh control valve.

10. A water purification system, characterized in that: It comprises the water production structure according to any one of claims 1 to 9.

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