Heat exchange device and water utilization equipment

Abstract

The utility model relates to a heat exchange device and water consuming equipment, and the heat exchange device comprises a heat exchange pipe, a first heat exchange liquid and a second heat exchange liquid, the heat exchange structure is provided with a heat exchange flow channel, second heat exchange liquid flows in the heat exchange flow channel in the second direction, the heat exchange flow channel comprises a first heat exchange section and a second heat exchange section which are sequentially arranged in the second direction, and the flow area of the first heat exchange section is larger than that of the second heat exchange section; the heat exchange pipe is arranged in the heat exchange flow channel and extends to the first heat exchange section and the second heat exchange section, and the second heat exchange liquid can exchange heat with the first heat exchange liquid. When a user needs to continuously obtain hot water, purified water in the second heat exchange section which is located on the downstream and has a large flow area can continuously absorb heat of the hot water in the heat exchange pipes, so that the temperature of the purified water in the second heat exchange section is continuously increased, the time needed for heating the purified water is shortened, the water outlet amount of hot water and boiled water is increased, and the waiting time of the user is shortened; and user experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of water purifiers, and in particular to a heat exchange device and water-using equipment. Background Art

[0002] Water purifiers combine water purification and drinking water in one device. As living standards improve, consumers are placing increasing emphasis on drinking water hygiene. As integrated water purification and drinking products, water purifiers are becoming increasingly popular. Furthermore, boiled water purifiers, in addition to purifying and drinking water, also heat the purified water to a boiling point and then cool it to a set temperature, rather than simply heating it to the set temperature like ordinary water purifiers. Compared to other types of water purifiers, boiled water purifiers better meet the Chinese consumer's preference for drinking boiled water.

[0003] Current boiled water machines heat purified water to boiling and then cool it down to reach the desired temperature for users. Since boiled water requires both heating and cooling, users often have to wait a long time when they need to use large quantities of boiled water, which affects their experience. Utility Model Content

[0004] Based on this, it is necessary to provide a heat exchange device and water-using equipment to address the problem that users usually have to wait for a long time when they need to take a large amount of cooked water.

[0005] A heat exchange device, comprising:

[0006] a heat exchange tube, wherein a first heat exchange liquid flows in a first direction;

[0007] a heat exchange structure having a heat exchange channel, wherein a second heat exchange liquid flows inside the heat exchange channel in a second direction opposite to the first direction, the heat exchange channel including a first heat exchange section and a second heat exchange section arranged in sequence in the second direction, the flow area of ​​the first heat exchange section being larger than the flow area of ​​the second heat exchange section;

[0008] Wherein, the heat exchange pipe is arranged in the heat exchange channel and extends into the first heat exchange section and the second heat exchange section. The second heat exchange liquid can exchange heat with the first heat exchange liquid. The heat exchange pipe passes through the first heat exchange section and the second heat exchange section.

[0009] In one embodiment, the heat exchange structure further includes a plurality of stoppers, one end of all the stoppers are spaced apart along the second direction on the inner wall of the heat exchange channel, and the other opposite ends of all the stoppers are in contact with the heat exchange tube.

[0010] In one embodiment, at least part of the stop members are located in the second heat exchange section, and each of the stop members located in the second heat exchange section has a flow blocking surface, and each of the flow blocking surfaces is perpendicular to the second direction.

[0011] In one embodiment, at least part of two adjacent stop members are located on opposite sides of the heat exchange tube in the radial direction.

[0012] In one embodiment, when the heat exchange device is in use, the heat exchange flow channel includes a plurality of transverse channels arranged sequentially along the direction of gravity, and a plurality of curved channels, wherein the longitudinal directions of the plurality of transverse channels are parallel and intersect with the direction of gravity. The two ends of each curved channel are respectively connected to two adjacent transverse channels, and the longitudinal direction of each curved channel is bent relative to the direction of gravity.

[0013] A plurality of stoppers are provided in each of the transverse channels, and at least two adjacent stoppers are respectively provided on two opposite sides of the inner wall of the transverse channel in the gravity direction.

[0014] In one embodiment, each of the transverse channels includes three stop members, wherein two of the stop members are arranged at both ends of the transverse channel in its longitudinal direction and are located at the bottom of the inner wall of the transverse channel in the direction of gravity, and the other stop member is arranged between the two stop members and is located at the top of the inner wall of the transverse channel in the direction of gravity.

[0015] In one embodiment, part of the stop member is located in the first heat exchange section, and another part of the stop member is located in the second heat exchange section, and the height of the stop member located in the first heat exchange section is less than the height of the stop member located in the second heat exchange section.

[0016] In one embodiment, at least a portion of the stopper is provided with a fixing groove or a fixing hole on one end facing the heat exchange tube, and the heat exchange tube is passed through the fixing groove or the fixing hole.

[0017] In one embodiment, the heat exchange channel extends in a zigzag manner, and the heat exchange tube is arranged parallel to the heat exchange channel.

[0018] In one embodiment, the heat exchange pipe further includes a transition section, the two ends of which are respectively connected to the first heat exchange section and the second heat exchange section, and the flow area of ​​the transition section gradually increases in the direction from the first heat exchange section to the second heat exchange section.

[0019] In one embodiment, the heat exchange structure includes a first fixed plate and a second fixed plate, the surface of the first fixed plate is recessed with a heat exchange groove, the second fixed plate is covered on the first fixed plate and covers the heat exchange groove, and the heat exchange groove and the second fixed plate are surrounded to form the heat exchange channel.

[0020] In one embodiment, a capacity expansion groove is provided on a surface of the second fixing plate facing the first fixing plate, and the capacity expansion groove and the heat exchange groove are surrounded to form the heat exchange channel.

[0021] In one embodiment, the heat exchange structure further includes an auxiliary flow channel, and an auxiliary inlet and an auxiliary outlet both connected to the auxiliary flow channel, and the auxiliary flow channel is located away from the heat exchange flow channel.

[0022] A water-using equipment comprises the heat exchange device as described in any one of the above items.

[0023] In one embodiment, the water-using equipment further includes a heating device having a cold water inlet and a hot water outlet, the cold water inlet is connected to the heat exchange channel, and the hot water outlet is connected to the heat exchange pipe.

[0024] When the above-mentioned heat exchange device is applied to a water cooker, the first heat exchange liquid is hot water with a higher temperature, and the second heat exchange liquid is purified water with a lower temperature. If the user needs cooked water, the purified water with a lower temperature is heated to boiling water through the heat exchange channel and then input into the heat exchange tube. After heat exchange with the unheated purified water through the heat exchange tube, the boiling water is cooled to the required temperature.

[0025] When the user needs to obtain hot water continuously, the water preparation machine will continuously input clean water into the heat exchange channel, and continuously input the heated boiling water into the heat exchange tube. The clean water in the second heat exchange section will continue to exchange heat with the hot water, thereby continuously increasing the temperature of the clean water in the second heat exchange section, making the temperature of the clean water in the second heat exchange section higher and higher, thereby making the temperature of the clean water input into the heating device higher and higher, so the time required to heat the clean water to boiling will become shorter and shorter, thereby making the hot water output speed faster and faster.

[0026] Since the flow area of ​​the first heat exchange section is smaller than that of the second heat exchange section, and the first heat exchange section is located upstream of the second heat exchange section, even after the clean water in the first heat exchange section exchanges heat with the hot water in the heat exchange tube, the heated clean water will directly flow into the second heat exchange section and will not be stored in the first heat exchange section. Combined with the continuous input of clean water with lower temperature, the temperature of the clean water in the first heat exchange section will be maintained at a lower state. When the boiling water in the heat exchange tube is cooled in the second heat exchange section, it will be reduced to a lower temperature in the first heat exchange section, so that the cooked water output by the heat exchange tube can maintain the required temperature suitable for drinking.

[0027] In this way, when users need continuous hot water, the purified water in the second heat exchange section, located downstream and with a larger circulation area, will continuously absorb the heat from the hot water in the heat exchange tubes, causing the temperature of the purified water in the second heat exchange section to continuously rise. This in turn reduces the time required to heat the purified water, increases the output of hot and cooked water, reduces user waiting time, and improves the user experience. Meanwhile, the purified water in the first heat exchange section, located upstream and with a smaller circulation area, remains at a lower temperature. The temperature of the hot water passing through the first heat exchange section can be further reduced to the required temperature, ensuring that the temperature of the cooked water output by the water cooker meets the user's needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a heat exchange device in some embodiments of the present application.

[0029] Figure 2 for Figure 1 A schematic structural diagram of the heat exchange device in the embodiment from another perspective.

[0030] Figure 3 for Figure 1 A schematic structural diagram of the heat exchange device in the embodiment from another perspective.

[0031] Figure 4 for Figure 1 Schematic cross-sectional view of the heat exchange device in the embodiment.

[0032] Figure 5 for Figure 4 Magnified view at point A.

[0033] Figure 6 for Figure 1 Schematic diagram of the structure of the first fixing plate of the heat exchange device in the embodiment.

[0034] Figure 7 for Figure 1 A schematic structural diagram of the heat exchange device in the embodiment when in operation.

[0035] Description of reference numerals:

[0036] Heat exchange device 100;

[0037] Heat exchange tube 10; first inlet 11; first outlet 12;

[0038] Heat exchange structure 30; heat exchange channel 31; first heat exchange section 32; second heat exchange section 33; transverse channel 34; bending channel 35; transition section 36;

[0039] First fixing plate 40; second fixing plate 41; heat exchange groove 42; expansion groove 43; auxiliary flow channel 44; second inlet 45; second outlet 46; auxiliary inlet 47; auxiliary outlet 48;

[0040] Stop member 50; flow blocking surface 51; fixing groove 52. DETAILED DESCRIPTION

[0041] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0042] In the description of this application, it should be understood that if 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", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0043] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0044] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0045] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0046] It should be noted that if 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 an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0047] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , Figure 1 The heat exchange device 100 according to one embodiment of the present application is shown as a schematic structural diagram. The heat exchange device 100 provided in one embodiment of the present application includes a heat exchange tube 10 and a heat exchange structure 30. A first heat exchange liquid flows in a first direction inside the heat exchange tube 10. The heat exchange structure 30 has a heat exchange flow channel 31. A second heat exchange liquid flows in a second direction inside the heat exchange flow channel 31. The heat exchange tube 10 is arranged inside the heat exchange tube 10. In this way, when the first heat exchange liquid flows in the heat exchange tube 10 and the second heat exchange liquid flows in the heat exchange flow channel 31, the first heat exchange liquid can exchange heat with the second heat exchange liquid through the heat exchange tube 10, thereby causing the first heat exchange liquid to cool down and the second heat exchange liquid to heat up, or causing the first heat exchange liquid to heat up and the second heat exchange liquid to cool down.

[0048] The first direction is opposite to the second direction. That is, the direction in which the first heat exchange liquid flows within the heat exchange tube 10 is opposite to the direction in which the second heat exchange liquid flows within the heat exchange tube 10. The first heat exchange liquid and the second heat exchange liquid are in a state of convection. As a result, during the circulation of the first heat exchange liquid, the temperature gradually approaches the initial temperature of the second heat exchange liquid, and during the circulation of the second heat exchange liquid, the temperature gradually approaches the initial temperature of the first heat exchange liquid.

[0049] Furthermore, the heat exchange channel 31 includes a first heat exchange section 32 and a second heat exchange section 33 arranged sequentially in the second direction, and the flow area of ​​the first heat exchange section 32 is greater than the flow area of ​​the second heat exchange section 33. The flow area of ​​the heat exchange tube 10 refers to the area of ​​the heat exchange tube 10 on a cross section perpendicular to the first direction. Similarly, the flow area of ​​the heat exchange channel 31 refers to the area of ​​the heat exchange channel 31 on a cross section perpendicular to the second direction.

[0050] Among them, the heat exchange tube 10 is arranged in the heat exchange channel 31 and extends into the first heat exchange section 32 and the second heat exchange section 33. Since the first heat exchange section 32 and the second heat exchange section 33 are arranged sequentially along the second direction, for the first heat exchange liquid in the heat exchange tube 10, the first heat exchange liquid will first pass through the second heat exchange section 33 and then pass through the first heat exchange section 32 during the process of flowing along the first direction.

[0051] During actual use, the temperature of the first heat exchange liquid input into the heat exchange tube 10 is greater than the temperature of the second heat exchange liquid input into the heat exchange channel 31, and when the first heat exchange liquid circulates in the heat exchange tube 10 and passes through the second heat exchange section 33, since the flow area of ​​the second heat exchange section 33 is larger, the first heat exchange liquid can exchange most of the heat to the second heat exchange section 33, so that the temperature of the second heat exchange liquid in the second heat exchange section 33 increases; and when the first heat exchange liquid passes through the first heat exchange section 32, since the flow area of ​​the first heat exchange section 32 is smaller and the first heat exchange section 32 is closer to the inlet of the heat exchange channel 31, after the first heat exchange liquid passes through the first heat exchange section 32, the temperature of the first heat exchange liquid will drop to close to the initial temperature of the second heat exchange liquid.

[0052] As the second heat exchange liquid flows within the heat exchange channel 31, it absorbs heat from the first heat exchange liquid, thereby increasing the temperature of the second heat exchange liquid. However, since the second heat exchange section 33 is closer to the inlet of the heat exchange tube 10 than the first heat exchange section 32, the overall temperature of the second heat exchange liquid within the second heat exchange section 33 is higher than the overall temperature of the second heat exchange liquid within the first heat exchange section 32. Furthermore, since the flow area of ​​the second heat exchange section 33 is larger than that of the first heat exchange section 32, the second heat exchange section 33 can store more second heat exchange liquid than the first heat exchange section 32. More second heat exchange liquid allows the second heat exchange section 33 to store more heat. Even if the first heat exchange section 32 continuously inputs the second heat exchange liquid at a lower temperature into the second heat exchange section 33, the second heat exchange section 33 can maintain a higher temperature, thereby outputting the second heat exchange liquid at a higher temperature.

[0053] When the above-mentioned heat exchange device 100 is applied to a water cooker, the first heat exchange liquid is hot water with a higher temperature, and the second heat exchange liquid is purified water with a lower temperature. If the user needs cooked water, the purified water with a lower temperature passes through the heat exchange channel 31 and is heated to boiling water by a heating device, and then input into the heat exchange tube 10. After heat exchange with the unheated purified water through the heat exchange tube 10, the boiling water is cooled to the required temperature.

[0054] When the user needs to obtain hot water continuously, the water preparation machine will continuously input clean water into the heat exchange channel 31, and continuously input the heated boiling water into the heat exchange tube 10. The clean water in the second heat exchange section 33 continues to exchange heat with the hot water, thereby continuously increasing the temperature of the clean water in the second heat exchange section 33, making the temperature of the clean water in the second heat exchange section 33 higher and higher, thereby making the temperature of the clean water input into the heating device higher and higher, so that the time required for the clean water to be heated to boiling becomes shorter and shorter, thereby making the water output speed of hot water faster and faster.

[0055] Since the flow area of ​​the first heat exchange section 32 is smaller than the flow area of ​​the second heat exchange section 33, and the first heat exchange section 32 is located upstream of the second heat exchange section 33, even after the purified water in the first heat exchange section 32 is heat-exchanged with the hot water in the heat exchange tube 10, the heated purified water will directly flow into the second heat exchange section 33 and will not be stored in the first heat exchange section 32. Combined with the continuous input of purified water with lower temperature, the temperature of the purified water in the first heat exchange section 32 will be maintained at a low state. When the boiling water in the heat exchange tube 10 is cooled in the second heat exchange section 33, it will be reduced to a lower temperature in the first heat exchange section 32, so that the cooked water output by the heat exchange tube 10 can maintain the required temperature suitable for drinking.

[0056] In this way, when the user needs to continuously obtain hot water, the purified water in the second heat exchange section 33, which is located downstream and has a larger circulation area, will continuously absorb the heat of the hot water in the heat exchange tube 10, causing the temperature of the purified water in the second heat exchange section 33 to continuously rise, thereby reducing the time required to heat the purified water, increasing the output of hot water and cooked water, reducing user waiting time, and improving the user experience. The temperature of the purified water in the first heat exchange section 32, which is located upstream and has a smaller circulation area, is maintained at a lower temperature. The temperature of the hot water passing through the first heat exchange section 32 can be further reduced to the required temperature, ensuring that the temperature of the cooked water output by the water cooker meets the user's needs.

[0057] It should be noted that the heat exchange device 100 can also be used in coffee machines, tea bar machines and other equipment that need to output hot water or boiled water, which is not limited here.

[0058] It is understood that the first and second directions described above can be straight or curved, depending on the shape of the heat exchange tube 10 and the hot runner. Specifically, the heat exchange tube 10 includes a first inlet 11 and a first outlet 12, and the first direction is the flow direction from the first inlet 11 to the first outlet 12. The heat exchange structure 30 includes a second inlet 45 and a second outlet 46, and the second direction is the direction from the second inlet 45 to the second outlet 46. The heat exchange tube 10 is disposed within the heat exchange runner 31, with the first inlet 11 positioned near the second outlet 46, and the first outlet 12 positioned near the first inlet 11.

[0059] In some embodiments of the present application, the heat exchange channel 31 extends in a zigzag manner, and the portion of the heat exchange tube 10 located in the heat exchange channel 31 is arranged parallel to the heat exchange channel 31. The heat exchange tube 10 is arranged parallel to the heat exchange channel 31, that is, the heat exchange tube 10 also extends in a zigzag manner, thereby increasing the heat exchange time between the first heat exchange liquid and the second heat exchange liquid through the zigzag extended heat exchange tube 10 and the heat exchange channel 31, thereby improving the heat exchange effect between the first heat exchange liquid and the second heat exchange liquid, and ensuring that the first heat exchange liquid and / or the second heat exchange liquid can be cooled or heated to the required temperature.

[0060] In some embodiments of this application, see Figure 5 、 Figure 6 and Figure 7 The heat exchange structure 30 also includes a plurality of stop members 50, one end of all the stop members 50 is arranged on the inner wall of the heat exchange channel 31 at intervals along the second direction, and the other end of all the stop members 50 is in contact with the heat exchange tube 10, so that the heat exchange tube 10 is fixed by all the stop members 50, so that the heat exchange tube 10 can be maintained in a position close to the middle of the heat exchange channel 31, so that the circumferential side walls of the heat exchange tube 10 can all be in contact with the second heat exchange liquid, thereby improving the heat exchange efficiency between the first heat exchange liquid and the second heat exchange liquid in the heat exchange tube 10.

[0061] In some embodiments, at least part of the stop member 50 is located in the second heat exchange section 33, and each stop member 50 located in the second heat exchange section 33 has a blocking surface 51, and each blocking surface 51 is perpendicular to the second direction. The blocking surface 51 prevents the second heat exchange liquid from flowing, so that the second heat exchange liquid can only flow near the surface of the heat exchange tube 10.

[0062] Because the flow of the second heat exchange liquid in the second heat exchange section 33 is mainly concentrated at the position on the surface of the heat exchange tube 10, the second heat exchange liquid at the position of the second heat exchange section 33 away from the surface of the heat exchange tube 10 will be in a state of lower flow velocity. After the second heat exchange liquid on the surface of the heat exchange tube 10 receives the heat of the first heat exchange liquid, the second heat exchange liquid will transfer part of the heat to the second heat exchange liquid at the position away from the surface of the heat exchange tube 10, thereby temporarily storing the heat in the second heat exchange liquid at the position away from the surface of the heat exchange tube 10.

[0063] When the heat exchange device 100 is used in a water cooker, the first heat exchange liquid is hot water at a higher temperature, and the second heat exchange liquid is purified water at a lower temperature. After the user takes the cooked water for the first time, part of the heat of the hot water is temporarily stored in the second heat exchange liquid at a position away from the surface of the heat exchange tube 10 through the above method. When the user takes the cooked water for the second time, the second heat exchange liquid on the surface of the heat exchange tube 10 will not only receive heat from the first heat exchange liquid in the heat exchange tube 10, but also receive heat from the second heat exchange liquid at a position away from the surface of the heat exchange tube 10. The two together increase the heat of the second heat exchange liquid on the surface of the heat exchange tube 10, thereby increasing the temperature of the second heat exchange liquid output by the heat exchange flow channel 31, that is, increasing the temperature of the purified water output by the heat exchange flow channel 31, thereby reducing the time required to heat the purified water to boiling water, reducing the time the user waits for hot or cooked water, and improving the user experience.

[0064] In some embodiments, at least partially adjacent two stop members 50 are respectively located on opposite sides of the heat exchange tube 10 in the radial direction. In this way, the stop members 50 on the opposite sides of the heat exchange tube 10 can simultaneously fix the heat exchange tube 10 up and down or left and right, thereby improving the fixing efficiency of the heat exchange tube 10.

[0065] Among the multiple stop pieces 50 located in the second heat exchange section 33, some adjacent two stop pieces 50 are located on opposite sides of the heat exchange tube 10 in the radial direction. The two stop pieces 50 on the opposite sides cooperate with their own flow-blocking surfaces 51 to increase the amount of blocking of the second heat exchange liquid in the second heat exchange section 33, so that more second heat exchange liquid can be blocked by the stop pieces 50 and used to store heat, thereby improving the utilization rate of heat, further reducing the time users wait for hot water or boiled water, and improving the user experience.

[0066] It is understandable that the first heat exchange section 32 and the second heat exchange section 33 may both be provided with a stop member 50, and the stop members 50 in the first heat exchange section 32 and the second heat exchange section 33 may both have a flow-blocking surface 51, or only the second heat exchange section 33 may be provided with a stop member 50 and have a flow-blocking surface 51.

[0067] In some specific embodiments, not all of the stop members 50 need to block the second heat exchange liquid. Only the stop members 50 in the second heat exchange section 33 need to block the second heat exchange liquid, and the stop members 50 in the first heat exchange section 32 only need to support the heat exchange tube 10.

[0068] Furthermore, in order to adapt to the first heat exchange section 32 with a smaller flow area, part of the stop piece 50 is located in the first heat exchange section 32, and the other part of the stop piece 50 is located in the second heat exchange section 33, and the height of the stop piece 50 located in the first heat exchange section 32 is less than the height of the stop piece 50 located in the second heat exchange section 33, thereby reducing the height of the stop piece 50 in the first heat exchange section 32, so that the heat exchange tube 10 can also be maintained in the middle position in the first heat exchange section 32, thereby improving the heat exchange efficiency.

[0069] Furthermore, to enhance the support provided by the stopper 50 to the heat exchange tube 10, at least a portion of the stopper 50 has a fixing groove 52 on one end thereof facing the heat exchange tube 10, through which the heat exchange tube 10 is inserted, thereby supporting the surface of the heat exchange tube 10 via the fixing groove 52. It is understood that in other embodiments, at least a portion of the end thereof facing the heat exchange tube 10 may also have a fixing hole, through which the heat exchange tube 10 is inserted.

[0070] During actual use, after the second heat exchange liquid enters the heat exchange channel 31, due to the presence of air inside the heat exchange channel 31 and some dead corners in the heat exchange channel 31, the heat exchange channel 31 cannot be completely filled with the second heat exchange liquid, that is, there are bubbles in the heat exchange channel 31. The presence of bubbles will affect the heat exchange efficiency between the second heat exchange liquid and the first heat exchange liquid in the heat exchange tube 10.

[0071] To this end, in some embodiments, when the heat exchange device 100 is in use, the heat exchange flow channel 31 includes a plurality of transverse channels 34 arranged sequentially along the direction of gravity, and a plurality of curved channels 35. The longitudinal directions of the plurality of transverse channels 34 are parallel and intersect the direction of gravity. The two ends of each curved channel 35 connect to two adjacent transverse channels 34, and the longitudinal direction of each curved channel 35 is bent relative to the direction of gravity. Optionally, the curved channels 35 are arranged in a semicircle, with all transverse channels 34 parallel and one end of all transverse channels 34 located in the same plane.

[0072] Among them, when one of the transverse channels 34 is filled with the second heat exchange liquid, the second heat exchange liquid that continues to flow in will enter the curved channel 35. When the curved channel 35 is filled with a certain amount of the second heat exchange liquid, the second heat exchange liquid that continues to be filled will directly enter the next transverse channel 34, thereby causing the air in the curved channel 35 to be unable to be discharged, thereby generating bubbles.

[0073] To this end, a plurality of stop members 50 are provided in each transverse channel 34, and at least some of the adjacent two stop members 50 are respectively provided on opposite sides of the inner wall of the transverse channel 34 in the direction of gravity. When the transverse channel 34 begins to be filled with the second heat exchange liquid, the second heat exchange liquid will first contact the stop member 50 and be blocked by the stop member 50, so that the second heat exchange liquid will not continue to enter the transverse channel 34, but will continue to accumulate in the curved channel 35, thereby continuing to fill the space in the curved channel 35 until the space in the curved channel 35 is filled or until the height of the second heat exchange liquid is higher than the stop member 50. In this way, a portion of the gas in the curved channel 35 can be further discharged, thereby reducing the generation of bubbles in the curved channel 35, improving the filling rate of the second heat exchange liquid in the heat exchange channel 31, and improving the overall heat exchange efficiency of the heat exchange device 100.

[0074] Specifically in some embodiments, each transverse channel 34 includes three stop members 50, two of which are arranged at the two ends of the transverse channel 34 in its longitudinal direction and are located at the bottom of the inner wall of the transverse channel 34 in the direction of gravity, and the other stop member 50 is arranged between the two stop members 50 and is located at the top of the inner wall of the transverse channel 34 in the direction of gravity.

[0075] When the second heat exchange liquid begins to fill the curved channel 35, the second heat exchange liquid will first be blocked by the stop piece 50 located at the bottom of one end of the transverse channel 34, so that the curved channel 35 continues to be filled with the second heat exchange liquid until the height of the second heat exchange liquid in the curved channel 35 is higher than the height of the stop piece 50. However, the second heat exchange liquid will then be blocked by the stop piece 50 at the top of the transverse channel 34, and continue to be filled with the second heat exchange liquid in the curved channel 35 until the curved channel 35 is filled or nearly filled with the second heat exchange liquid, thereby increasing the filling rate of the second heat exchange liquid in the heat exchange channel 31 and improving the overall heat exchange efficiency of the heat exchange device 100.

[0076] In some embodiments of the present application, the heat exchange tube 10 further includes a transition section 36. The ends of the transition section 36 connect the first heat exchange section 32 and the second heat exchange section 33, respectively. In the direction from the first heat exchange section 32 to the second heat exchange section 33, the flow area component of the transition section 36 increases, that is, the cross-sectional area component of the transition section 36 increases. In this way, the transition section 36 allows the second heat exchange liquid in the first heat exchange section 32 to flow smoothly into the second heat exchange section 33, avoiding turbulence that affects the heat exchange efficiency between the second heat exchange liquid and the first heat exchange liquid.

[0077] In some embodiments of the present application, to form a heat exchange channel 31, the heat exchange structure 30 includes a first fixing plate 40 and a second fixing plate 41. The surface of the first fixing plate 40 is recessed with a heat exchange groove 42. The second fixing plate 41 is placed on the first fixing plate 40 and covers the heat exchange groove 42. The heat exchange groove 42 and the second fixing plate 41 enclose the heat exchange channel 31. In this way, the heat exchange channel 31 is formed by combining the first fixing plate 40 and the second fixing plate 41, which can facilitate the installation of the heat exchange structure 30. At the same time, since multiple stoppers 50 are all provided in the heat exchange groove 42, the open heat exchange groove 42 can also facilitate the installation of multiple stoppers 50.

[0078] In some embodiments, an expansion groove 43 is provided on the side surface of the second fixed plate 41 facing the first fixed plate 40, and the expansion groove 43 and the heat exchange groove 42 are arranged to form a heat exchange channel 31. In this way, the flow area of ​​the heat exchange channel 31 can be increased through the expansion groove 43, thereby meeting the flow area required by the second heat exchange section 33.

[0079] In some embodiments of the present application, the heat exchange structure 30 further includes an auxiliary flow channel 44, and an auxiliary inlet 47 and an auxiliary outlet 48 both connected to the auxiliary flow channel 44. The auxiliary flow channel 44 is located away from the heat exchange flow channel 31. That is, the auxiliary flow channel 44 is a separately provided flow channel. In actual use, the auxiliary flow channel 44 can be used to circulate liquid without heat exchange or heating.

[0080] Specifically, when the heat exchange structure 30 is used as a water cooker, the auxiliary flow channel 44 can be directly connected to the boiling water outlet of the water cooker. After the clean water is heated into boiling water, the boiling water can directly flow into the auxiliary flow channel 44 through the auxiliary inlet 47, and then flow out through the auxiliary flow channel 44 to meet the user's need for boiling water.

[0081] The present application also provides a water-using device. In addition to the aforementioned water-cooking machine, the water-using device can also be a coffee machine, a water purifier, a tea bar machine, or other devices that require cooked or hot water. Furthermore, the water-using device includes a heating device having a cold water inlet and a hot water outlet. The cold water inlet is connected to the second outlet 46 of the heat exchange channel 31, and the hot water outlet is connected to the first inlet 11 of the heat exchange tube 10.

[0082] When the water-using equipment is a water cooker, the purified water prepared by the water cooker is input into the second inlet 45 of the heat exchange channel 31 and output to the heating device through the second outlet 46. After the purified water heating device heats it to boiling water, it is input into the heat exchange tube 10, and heat is exchanged with the unheated purified water through the heat exchange tube 10, so that the boiling water is cooled to the required temperature.

[0083] The above heat exchange equipment has at least the following advantages:

[0084] When a user requires continuous hot water, the purified water in the second heat exchange section 33, located downstream and with a larger circulation area, continuously absorbs heat from the hot water in the heat exchange tube 10, causing the purified water temperature in the second heat exchange section 33 to continuously rise. This, in turn, reduces the time required to heat the purified water, increases the output of hot and cooked water, reduces user waiting time, and improves the user experience. Meanwhile, the purified water in the first heat exchange section 32, located upstream and with a smaller circulation area, remains at a lower temperature. The temperature of the hot water passing through the first heat exchange section 32 can be further reduced to the desired temperature, ensuring that the cooked water output by the water cooker meets the user's needs.

[0085] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0086] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A heat exchange device, characterized in that: The heat exchange device comprises: A heat exchange tube (10) having a first heat exchange liquid flowing therein along a first direction; A heat exchange structure (30) comprises a heat exchange channel (31), wherein a second heat exchange liquid flows inside the heat exchange channel (31) along a second direction opposite to the first direction, the heat exchange channel (31) comprises a first heat exchange section (32) and a second heat exchange section (33) arranged in sequence in the second direction, and the flow area of ​​the first heat exchange section (32) is larger than the flow area of ​​the second heat exchange section (33); The heat exchange tube (10) is arranged in the heat exchange channel (31) and extends into the first heat exchange section (32) and the second heat exchange section (33), and the second heat exchange liquid can perform heat exchange with the first heat exchange liquid.

2. The heat exchange device according to claim 1, characterized in that: The heat exchange structure (30) further comprises a plurality of stoppers (50), one end of all the stoppers (50) being spaced apart on the inner wall of the heat exchange channel (31) along the second direction, and the other opposite ends of all the stoppers (50) being in contact with the heat exchange tube (10).

3. The heat exchange device according to claim 2, characterized in that: At least part of the stopper (50) is located in the second heat exchange section (33), and each of the stopper (50) located in the second heat exchange section (33) has a flow-blocking surface (51), and each of the flow-blocking surfaces (51) is perpendicular to the second direction.

4. The heat exchange device according to claim 2, characterized in that: At least part of the two adjacent stop members (50) are respectively located on two opposite sides of the heat exchange tube (10) in the radial direction.

5. The heat exchange device according to claim 4, characterized in that: When the heat exchange device is in use, the heat exchange flow channel (31) includes a plurality of transverse channels (34) arranged in sequence along the direction of gravity, and a plurality of bent channels (35), the longitudinal directions of the plurality of transverse channels (34) are parallel and intersect with the direction of gravity, the two ends of each bent channel (35) are respectively connected to two adjacent transverse channels (34), and the longitudinal direction of each bent channel (35) is bent relative to the direction of gravity; A plurality of stoppers (50) are provided in each transverse channel (34), and at least two adjacent stoppers (50) are respectively provided on opposite sides of the inner wall of the transverse channel (34) in the direction of gravity.

6. The heat exchange device according to claim 5, characterized in that: Each of the transverse channels (34) includes three stop members (50), wherein two of the stop members (50) are arranged at both ends of the transverse channel (34) in its longitudinal direction and are located at the bottom of the inner wall of the transverse channel (34) in the direction of gravity, and the other stop member (50) is arranged between the two stop members (50) and is located at the top of the inner wall of the transverse channel (34) in the direction of gravity.

7. The heat exchange device according to claim 2, characterized in that: Part of the stopper (50) is located in the first heat exchange section (32), and another part of the stopper (50) is located in the second heat exchange section (33), and the height of the stopper (50) located in the first heat exchange section (32) is smaller than the height of the stopper (50) located in the second heat exchange section (33).

8. The heat exchange device according to claim 2, characterized in that: At least a portion of the stopper (50) is provided with a fixing groove (52) or a fixing hole on one end facing the heat exchange tube (10), and the heat exchange tube (10) is passed through the fixing groove (52) or the fixing hole.

9. The heat exchange device according to claim 1, characterized in that: The heat exchange channel (31) extends in a zigzag manner, and the heat exchange tube (10) is arranged in parallel with the heat exchange channel (31).

10. The heat exchange device according to claim 1, characterized in that: The heat exchange pipe (10) further comprises a transition section (36), the two ends of which are respectively connected to the first heat exchange section (32) and the second heat exchange section (33), and the flow area of ​​the transition section (36) gradually increases in the direction from the first heat exchange section (32) to the second heat exchange section (33).

11. The heat exchange device according to claim 1, characterized in that: The heat exchange structure (30) includes a first fixed plate (40) and a second fixed plate (41), wherein a heat exchange groove (42) is recessed on the surface of the first fixed plate (40), and the second fixed plate (41) is covered on the first fixed plate (40) and covers the heat exchange groove (42), and the heat exchange groove (42) and the second fixed plate (41) are surrounded to form the heat exchange flow channel (31).

12. The heat exchange device according to claim 11, characterized in that: A capacity expansion groove (43) is provided on a surface of one side of the second fixing plate (41) facing the first fixing plate (40), and the capacity expansion groove (43) and the heat exchange groove (42) are surrounded to form the heat exchange flow channel (31).

13. The heat exchange device according to claim 1, characterized in that: The heat exchange structure (30) further includes an auxiliary flow channel (44), and an auxiliary inlet (47) and an auxiliary outlet (48) both of which are connected to the auxiliary flow channel (44); the auxiliary flow channel (44) is located away from the heat exchange flow channel (31).

14. A water-using device, characterized in that: Comprising the heat exchange device (100) according to any one of claims 1 to 13.

15. The water-using equipment according to claim 14, characterized in that: The water-using equipment further comprises a heating device, the heating device having a cold water inlet and a hot water outlet, the cold water inlet being connected to the heat exchange channel (31), and the hot water outlet being connected to the heat exchange pipe (10).

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