Heat exchange structure and water dispenser

Abstract

The present invention discloses a heat exchange structure and a water dispenser. The heat exchange structure includes a hot water tank, a heating element and a first water outlet pipe. The hot water tank is provided with a hot water area and a water inlet area. The heating element is provided in the hot water area or at the junction of the water inlet area and the hot water area. One end of the first water outlet pipe is connected with the hot water area, and the other end of the first water outlet pipe passes through the water inlet area and extends out of the hot water tank. In the above heat exchange structure, the normal temperature water in the water inlet area can be heated by the heating element to become high temperature water, and the high temperature water in the hot water area can flow out through the first water outlet pipe. The first water outlet pipe will pass through the water inlet area during the outflow process. At this time, the first water outlet pipe can exchange heat with the water in the water inlet area to preheat the water in the water inlet area. The heat exchange between the normal temperature water and the high temperature water is achieved by the first water outlet pipe passing through the water inlet area. There is no need to set up an additional heat exchange pipeline. The structure is simple, the cost can be reduced, and there is no need to add joints to the additionally set heat exchange pipeline. The water leakage caused by the joints can be effectively reduced, and the user experience is better.

Description

Technical Field

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

[0002] The water purifier can filter tap water through a filtering device and can add water or cool the water as needed. It is widely used in public places such as companies and schools.

[0003] At present, the heat exchanger and the hot tank in the water purifier are assembled separately, and the exchanger occupies a large volume. In the traditional water system structure, the heat exchange solution is to heat the water stored in the hot tank to boiling water, and press the boiling water out through the water inlet pressure at the front end. The heat exchange part is a large tube-in-small tube structure. The boiling water enters the large tube and exchanges heat with the normal temperature water in the small tube to achieve cooling. However, the above heat exchange part requires the use of very long pipes to achieve heat exchange, which is relatively costly. At the same time, the large tube-in-small tube method involves as many as 8 joints, which poses a risk of water leakage. Summary of the invention

[0004] Based on this, the present invention aims to overcome the defects of the existing water dispenser in that the heat exchange part has high cost and the risk of water leakage, and to provide a heat exchange structure and water dispenser that can reduce cost and water leakage.

[0005] The technical solution is as follows:

[0006] A heat exchange structure comprises a hot water tank, a heating element and a first water outlet pipe, wherein a hot water area and a water inlet area are arranged in the hot water tank, the heating element is arranged in the hot water area or at the junction of the water inlet area and the hot water area, one end of the first water outlet pipe is connected to the hot water area, and the other end of the first water outlet pipe passes through the water inlet area and extends out of the hot water tank.

[0007] In the above-mentioned heat exchange structure, the normal temperature water in the water inlet area can be heated by the heating element to become high temperature water, and the high temperature water in the hot water area can flow out through the first water outlet pipe. The first water outlet pipe will pass through the water inlet area during the outflow process. At this time, the first water outlet pipe can exchange heat with the water in the water inlet area to preheat the water in the water inlet area, so that the normal temperature water in the water inlet area has a certain initial temperature and can be heated to high temperature water by the heating element more quickly, thereby reducing energy consumption and making fuller use of heat. Since the heat exchange between normal temperature water and high temperature water is achieved by the first water outlet pipe passing through the water inlet area, there is no need to additionally set up heat exchange pipelines, the structure is simpler, and the cost can be reduced. At this time, there is no need to add joints to the additionally set up heat exchange pipelines, which can effectively reduce water leakage caused by joints and provide a better user experience.

[0008] In one embodiment, the hot water tank includes a high-temperature water part and a first heat exchange part, the high-temperature water part encloses the hot water zone, the first heat exchange part encloses the water inlet zone, a connecting port is provided between the high-temperature water part and the first heat exchange part, and the hot water zone and the water inlet zone are connected through the connecting port.

[0009] In one embodiment, the heat exchange structure further includes a water inlet pipe, a water inlet buffer is provided in the water inlet area, the water inlet buffer is provided with a water flow channel and a plurality of water outlets, and the water flow channel is respectively connected to the water inlet pipe and the water outlets.

[0010] In one of the embodiments, the water inlet buffer comprises a spraying portion, the spraying portion is arranged toward a portion of the first water outlet pipe located in the water inlet area, and the water outlets are arranged at intervals on the spraying portion.

[0011] In one embodiment, the surface of the spraying portion close to the first water outlet pipe is an arc-shaped surface.

[0012] In one embodiment, a buffer cavity is provided in the spraying part, the water flow channel is communicated with the buffer cavity, the buffer cavity is communicated with the water outlet, and the maximum inner diameter of the buffer cavity is greater than the inner diameter of the water flow channel.

[0013] In one embodiment, the hot water area and the water inlet area are arranged in sequence from top to bottom, the first water outlet pipe is connected to the top of the high-temperature water part, and the water inlet pipe is connected to the bottom of the first heat exchange part. In the first heat exchange part, the water inlet buffer is arranged on the side of the first water outlet pipe away from the connecting port.

[0014] In one of the embodiments, the heat exchange structure further includes a water pump, and the water pump is disposed on the water inlet pipe.

[0015] In one embodiment, the inner diameter of the hot water zone near the connecting port is larger than the inner diameter of the connecting port, and the inner diameter of the water inlet zone near the connecting port is larger than the inner diameter of the connecting port.

[0016] In one embodiment, the heating element is disposed on a side of the hot water area close to the communication port.

[0017] In one embodiment, the first water outlet pipe includes a second heat exchange portion, the second heat exchange portion is located in the water inlet area, and the second heat exchange portion is a curved structure.

[0018] In one of the embodiments, at least one portion of the second heat exchange portion is S-shaped, U-shaped or spiral-shaped.

[0019] In one embodiment, the second heat exchange part is a bellows.

[0020] In one embodiment, the heat exchange structure further includes a second water outlet pipe and a mixing valve, one end of the second water outlet pipe is connected to the hot water area, the other end of the second water outlet pipe is connected to the mixing valve, and one end of the first water outlet pipe passes through the water inlet area and is connected to the mixing valve.

[0021] In one of the embodiments, a temperature regulating valve is provided on the second water outlet pipe, and the temperature regulating valve is used to adjust the flow rate of the second water outlet pipe.

[0022] In one of the embodiments, a temperature sensor is provided in the hot water area.

[0023] A drinking fountain comprises the heat exchange structure as described in any one of the above items.

[0024] In the above-mentioned water dispenser, the normal temperature water in the water inlet area can be heated by the heating element to become high temperature water, and the high temperature water in the hot water area can flow out through the first water outlet pipe. The first water outlet pipe will pass through the water inlet area during the outflow process. At this time, the first water outlet pipe can exchange heat with the water in the water inlet area to preheat the water in the water inlet area, so that the normal temperature water in the water inlet area has a certain initial temperature and can be heated to high temperature water by the heating element more quickly, thereby reducing energy consumption and making fuller use of heat. Since the heat exchange between normal temperature water and high temperature water is achieved by the first water outlet pipe passing through the water inlet area, there is no need to additionally set up heat exchange pipelines, the structure is simpler, and the cost can be reduced. At this time, there is no need to add joints to the additionally set up heat exchange pipelines, which can effectively reduce water leakage caused by joints and provide a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a partial structural schematic diagram of the heat exchange structure according to an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of a heat exchange structure according to an embodiment of the present invention;

[0029] Figure 3 for Figure 1 A magnified schematic diagram of center A.

[0030] Description of reference numerals:

[0031] 100. hot water tank, 101. hot water area, 102. water inlet area, 103. connecting port, 110. high temperature water part, 120. first heat exchange part, 130. temperature sensor, 200. heating element, 300. first water outlet pipe, 310. first end, 320. second end, 330. second heat exchange part, 400. water inlet pipe, 500. water inlet buffer, 501. water flow channel, 502. water outlet, 503. buffer chamber, 510. spraying part, 610. water pump, 620. solenoid valve, 710. second water outlet pipe, 720. mixing valve, 730. thermostatic valve. DETAILED DESCRIPTION

[0032] 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.

[0033] like Figure 1 and Figure 2 As shown, an embodiment discloses a heat exchange structure, including a hot water tank 100, a heating element 200 and a first water outlet pipe 300. A hot water area 101 and a water inlet area 102 are provided in the hot water tank 100. The heating element 200 is arranged at the hot water area 101 or at the junction of the water inlet area 102 and the hot water area 101. One end of the first water outlet pipe 300 is connected to the hot water area 101, and the other end of the first water outlet pipe 300 passes through the water inlet area 102 and extends out of the hot water tank 100.

[0034] With the above-mentioned heat exchange structure, the normal temperature water in the water inlet area 102 can be heated by the heating element 200 to become high temperature water, and the high temperature water in the hot water area 101 can flow out through the first water outlet pipe 300. The first water outlet pipe 300 will pass through the water inlet area 102 during the outflow process. At this time, the first water outlet pipe 300 can exchange heat with the water in the water inlet area 102 to preheat the water in the water inlet area 102, so that the normal temperature water in the water inlet area 102 has a certain initial temperature and can be heated to high temperature water by the heating element 200 more quickly, thereby reducing energy consumption and making more effective use of heat. Since the heat exchange between normal temperature water and high temperature water is achieved by the first water outlet pipe 300 passing through the water inlet area 102 at this time, there is no need to set up additional heat exchange pipelines, the structure is simpler, and the cost can be reduced. At this time, there is no need to add joints to the additionally set heat exchange pipelines, which can effectively reduce water leakage caused by joints and provide a better user experience.

[0035] Optionally, the high-temperature water in the hot water zone 101 is actually formed by the heating of the heating element 200, and the normal-temperature water in the water inlet zone 102 flows toward the heating element 200, and forms high-temperature water after being heated by the heating element 200. Therefore, the water inlet zone 102 and the hot water zone 101 are generally arranged in sequence along the direction of the water flow in the hot water tank 100.

[0036] Alternatively, if Figure 1 and Figure 2 As shown, the first water outlet pipe 300 includes a first end 310 and a second end 320, wherein the first end 310 is connected to the hot water area 101, the first end 310 can be located outside the hot water tank 100, and the second end 320 passes through one side of the hot water tank 100 and exits from the other side of the hot water tank 100, and the second end 320 passes through the water inlet area 102; or the first end 310 is located in the hot water area 101, and the second end 320 extends from the hot water area 101 to the water inlet area 102 and passes through the water inlet area 102 to exit the hot water tank 100. The above structures can realize heat exchange between the first water outlet pipe 300 and the water inlet area 102.

[0037] In one embodiment, if Figure 1 and Figure 2 As shown, the hot water tank 100 includes a high-temperature water portion 110 and a first heat exchange portion 120. The high-temperature water portion 110 encloses a hot water area 101, and the first heat exchange portion 120 encloses a water inlet area 102. A connecting port 103 is provided between the high-temperature water portion 110 and the first heat exchange portion 120, and the hot water area 101 is connected to the water inlet area 102 through the connecting port 103. The high-temperature water portion 110 forms a hot water area 101, and the first heat exchange portion 120 forms a water inlet area 102. The hot water area 101 and the water inlet area 102 are connected by a connecting port 103 to separate water of different temperatures, so that the hot water area 101 and the water inlet area 102 have a clear boundary to avoid large-scale mixing of normal temperature water and high-temperature water. The connecting port 103 allows the water in the water inlet area 102 to slowly enter the hot water area 101 and be heated, so as to avoid large-scale disturbance of the water in the hot water area 101, so that the high-temperature water in the hot water area 101 can stably maintain a high temperature and will not mix with the water in the water inlet area 102 to affect the water temperature.

[0038] In one embodiment, if Figures 1 to 3As shown, the heat exchange structure further includes a water inlet pipe 400, a water inlet buffer 500 is provided in the water inlet area 102, and the water inlet buffer 500 is provided with a water flow channel 501 and a plurality of water outlets 502, and the water flow channel 501 is respectively connected with the water inlet pipe 400 and the water outlet 502. The water inlet pipe 400 delivers normal temperature water into the water inlet area 102, and the normal temperature water flows through the water flow channel 501 and enters the water inlet area 102 through the water outlet 502, which can delay the water flow speed of the normal temperature water in the water inlet pipe 400 entering the water inlet area 102. There are multiple water outlets 502, which can disperse a stream of water in the water inlet pipe 400 into multiple streams of water and guide them to different areas of the water inlet area 102. At this time, the normal temperature water will not enter the hot water area 101 too quickly, which facilitates the heating of the heating element 200. At the same time, the normal temperature water can fully exchange heat with the first water outlet pipe 300, which has a preheating effect, so that the heating element 200 can be heated quickly.

[0039] Optionally, a filter is provided on the water inlet pipe 400 for filtering the water in the water inlet pipe 400 .

[0040] In one embodiment, if Figure 1 and Figure 3 As shown, the water inlet buffer 500 includes a spraying portion 510, which is disposed toward the portion of the first water outlet pipe 300 located in the water inlet area 102, and the water outlets 502 are disposed at intervals on the spraying portion 510. At this time, the water flow sprayed from the water outlets 502 can flow toward the first water outlet pipe 300, and the heat exchange effect with the first water outlet pipe 300 is better.

[0041] In one embodiment, if Figure 1 and Figure 3 As shown, the surface of the spraying part 510 close to the first water outlet pipe 300 is an arc surface. At this time, the water flow sprayed from the water outlet 502 on the spraying part 510 can be transported to more space in the water inlet area 102, and fully mixed and heat exchanged with the original water in the first water outlet pipe 300 and the water in the water inlet area 102, so that the temperature of the water flowing into the hot water area 101 remains stable.

[0042] In one embodiment, if Figure 1 and Figure 3 As shown, a buffer chamber 503 is provided in the spraying part 510, the water flow channel 501 is connected to the buffer chamber 503, the buffer chamber 503 is connected to the water outlet 502, and the maximum inner diameter of the buffer chamber 503 is greater than the inner diameter of the water flow channel 501. After the normal temperature water in the water inlet pipe 400 enters the buffer chamber 503, the water flow speed will be slowed down due to the enlarged space, and at the same time, the water flow speed is further slowed down by the obstruction of the inner wall of the buffer chamber 503, so that the flow speed of the water is relatively low when it flows out of the water outlet 502.

[0043] Optionally, the aperture of the connecting port 103 is equal to or similar to the aperture of the water flow channel 501, so that the flow rates entering the water inlet area 102 and the hot water area 101 are similar, so that hot water can be continuously output. At this time, the aperture of the connecting port 103 is smaller, which can better prevent the mixing of high and low temperature water between the hot water area 101 and the water inlet area 102.

[0044] In other embodiments, the surface of the spraying portion 510 close to the first water outlet pipe 300 may also be a plane, a hemispherical surface, a spherical surface, or the like.

[0045] In other embodiments, the spraying portion 510 may also be cylindrical, and the water outlet 502 is disposed on the outer side surface and the end surface of the spraying portion 510 .

[0046] In one embodiment, if Figure 2 As shown, the hot water area 101 and the water inlet area 102 are arranged in sequence from top to bottom, the first water outlet pipe 300 is connected to the top of the high-temperature water part 110, and the water inlet pipe 400 is connected to the bottom of the first heat exchange part 120. In the first heat exchange part 120, the water inlet buffer 500 is arranged on the side of the first water outlet pipe 300 away from the connecting port 103. After the water inlet pipe 400 enters the water inlet area 102, the room temperature water is located at the bottom of the water inlet area 102. After the room temperature water exchanges heat with the first water outlet pipe 300, the water with a higher temperature will rise compared to the water at the original temperature, and enter the hot water area 101 driven by the water flow. After being heated by the heating element 200, high temperature water is formed, which can rise to the top of the hot water area 101. The first water outlet pipe 300 can discharge the high temperature water. At this time, in addition to the effect of water pressure, the change of water's own temperature can also promote water flow, so that the water is heated and the heat exchange effect is better, while ensuring that the first water outlet pipe 300 can output water with a higher temperature.

[0047] In other embodiments, the hot water area 101 and the water inlet area 102 may also be arranged in sequence along a horizontal or approximately horizontal direction, a blocking portion is provided between the hot water area 101 and the water inlet area 102, and the connecting port 103 is located on the upper side of the blocking portion. When the water flows into the water inlet area 102, the water moves toward the opening direction driven by the water flow, passes through the first water outlet pipe 300, and exchanges heat with the first water outlet pipe 300. Subsequently, the preheated water enters the hot water area 101 from the opening and is heated to high-temperature water by the heating element 200, thereby realizing the preheating of water and the full utilization of heat.

[0048] In one embodiment, if Figure 2 As shown, the heat exchange structure further includes a water pump 610, which is disposed on the water inlet pipe 400. The water pump 610 can pressurize the water so that the water has a flow direction from the water inlet area 102 to the hot water area 101, thereby improving the fluidity of the water.

[0049] Alternatively, if Figure 2 As shown, the water inlet pipe 400 is also provided with a solenoid valve 620 , and the solenoid valve 620 can be used to control the water outflow and shut off the water outflow by opening and closing the water inlet pipe 400 .

[0050] In one embodiment, if Figure 1 and Figure 2 As shown, the inner diameter of the hot water area 101 near the connecting port 103 is larger than the inner diameter of the connecting port 103, and the inner diameter of the water inlet area 102 near the connecting port 103 is larger than the inner diameter of the connecting port 103. At this time, the contact between the high-temperature water in the hot water area 101 and the normal-temperature water in the water inlet area 102 can be reduced, and the mixing of the normal-temperature water and the high-temperature water can be prevented from affecting the water temperature in the hot water area 101, so that the hot water area 101 can maintain a relatively high water temperature. At the same time, the connecting port 103 can guide the normal-temperature water from the water inlet area 102 to the hot water area 101, which is convenient for the heating element 200 to heat the normal-temperature water in a centralized manner, so that the normal-temperature water can be heated as quickly as possible.

[0051] Specifically, the shape of the hot water tank 100 is similar to that of an hourglass. In other embodiments, a partition may also be provided in the hot water tank 100, and the partition divides the space in the hot water tank 100 into a water inlet area 102 and a hot water area 101. The connecting port 103 is provided on the partition, and the portion of the hot water located on one side of the partition is the high-temperature water portion 110, and the portion located on the other side of the partition is the first heat exchange portion 120.

[0052] In one embodiment, if Figure 1 As shown, the heating element 200 is disposed on one side of the hot water area 101 close to the communication port 103. At this time, the heating element 200 can directly heat the normal temperature water entering the hot water area 101 from the flow port, so that the normal temperature water is heated as quickly as possible, and the heating effect is better.

[0053] Optionally, the heating element 200 may be a heating plate, a heating tube, or the like.

[0054] In one embodiment, if Figure 1 As shown, the first water outlet pipe 300 includes a second heat exchange part 330, and the second heat exchange part 330 is located in the water inlet area 102. The second heat exchange part 330 is a curved structure. At this time, the contact area between the second heat exchange part 330 and the normal temperature water in the water inlet area 102 is larger, and the heat exchange effect is better, and the normal temperature water in the water inlet area 102 can be fully preheated.

[0055] Specifically, the second heat exchange portion 330 is located on the second end 320 .

[0056] In one embodiment, if Figure 1As shown, at least one part of the second heat exchange part 330 is S-shaped, U-shaped or spiral-shaped. At this time, the contact area between the second heat exchange part 330 and the normal temperature water in the water inlet area 102 is large, and the heat exchange effect is good.

[0057] Specifically, the length of the first water outlet pipe 300 in the water inlet area 102 is in the range of 3m to 5m. Within this length range, the first water outlet pipe 300 has a good heat exchange effect and a low cost.

[0058] Alternatively, if Figure 1 As shown, the water flow direction in the hot water tank 100 is from the water inlet area 102 to the hot water area 101, and the second heat exchange part 330 is arranged in the water inlet area 102 in a direction from one side wall of the water inlet area 102 to the other side wall of the water inlet area 102. At this time, the second heat exchange part 330 is arranged horizontally relative to the water flow in the water inlet area 102, so that the second heat exchange part 330 can fully exchange heat with the normal temperature water flowing through the second heat exchange part 330.

[0059] The second heat exchange part 330 is disposed in a direction perpendicular or approximately perpendicular to the water flow direction in the hot water tank 100 .

[0060] In one embodiment, the second heat exchange part 330 is a bellows, which can reduce the number of joints and reduce the possibility of water leakage.

[0061] Optionally, the corrugated tube is a single-layer tube, which has a better heat exchange effect.

[0062] Optionally, the second heat exchange part 330 may also be a tube made of other materials, such as a copper tube, which also has a better heat exchange effect.

[0063] In one embodiment, if Figure 2 As shown, the heat exchange structure further includes a second water outlet pipe 710 and a mixing valve 720. One end of the second water outlet pipe 710 is connected to the hot water area 101, and the other end of the second water outlet pipe 710 is connected to the mixing valve 720. One end of the first water outlet pipe 300 passes through the water inlet area 102 and is connected to the mixing valve 720. The second water outlet pipe 710 can directly output high-temperature water from the hot water area 101, and the first water outlet pipe 300 outputs high-temperature water after heat exchange in the water inlet area 102, and is fully mixed at the mixing valve 720, so that the temperature of the high-temperature water is adjusted to a more suitable temperature output, which can improve the user experience.

[0064] Optionally, the second water outlet pipe 710 is connected to the top of the high-temperature water zone. Since the water temperature rises to a high level in the hot water zone 101, the second water outlet pipe 710 can export high-temperature water with a higher water temperature for easy use.

[0065] In other embodiments, the first water outlet pipe 300 and the second water outlet pipe 710 are both straight outlet pipes, and the water flowing out of the first water outlet pipe 300 and the second water outlet pipe 710 can be used directly, wherein the first water outlet pipe 300 flows out warm water, and the second water outlet pipe 710 flows out boiling water.

[0066] In one embodiment, if Figure 2 As shown, the second water outlet pipe 710 is provided with a thermostatic valve 730, which is used to adjust the flow of the second water outlet pipe 710. The flow of the second water outlet pipe 710 can be adjusted by the thermostatic valve 730, and then the ratio between the flow of the first water outlet pipe 300 and the flow of the second water outlet pipe 710 can be adjusted, so that the temperature of the water mixed by the mixing valve 720 meets the user's requirements and is convenient to use.

[0067] In one embodiment, if Figure 1 As shown, a temperature sensor 130 is provided in the hot water area 101. The temperature sensor 130 can detect the water temperature in the hot water area 101 to understand the water temperature in the hot water area 101.

[0068] Among them, the temperature sensor 130 can be one or more, and the temperature sensor 130 can be a temperature sensing package or a temperature limiter, wherein the temperature sensing package is used to sense the water temperature in the hot water area 101, and the temperature limiter is electrically connected to the heating element 200. The temperature limiter can be used to limit the maximum temperature in the water heater. When the temperature in the hot water area 101 is greater than the above maximum temperature, the temperature limiter can turn off the heating element 200 to prevent the temperature in the hot water area 101 from being too high and causing a safety accident.

[0069] One embodiment discloses a drinking fountain, comprising the heat exchange structure as described in any one of the above items.

[0070] In the above-mentioned water dispenser, the normal temperature water in the water inlet area 102 can be heated by the heating element 200 to become high temperature water, and the high temperature water in the hot water area 101 can flow out through the first water outlet pipe 300. The first water outlet pipe 300 will pass through the water inlet area 102 during the outflow process. At this time, the first water outlet pipe 300 can exchange heat with the water in the water inlet area 102 to preheat the water in the water inlet area 102, so that the normal temperature water in the water inlet area 102 has a certain initial temperature and can be heated to high temperature water by the heating element 200 more quickly, thereby reducing energy consumption and making more effective use of heat. Since the heat exchange between normal temperature water and high temperature water is achieved by the first water outlet pipe 300 passing through the water inlet area 102 at this time, there is no need to set up an additional heat exchange pipeline, the structure is simpler, and the cost can be reduced. At this time, there is no need to add joints to the additionally set heat exchange pipeline, which can effectively reduce water leakage caused by the joints and provide a better user experience.

[0071] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0072] The above-mentioned 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 ordinary technicians in this field, 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

Claims

1. A heat exchange structure, characterized in that: It comprises a hot water tank, a heating element and a first water outlet pipe, wherein a hot water area and a water inlet area are provided in the hot water tank, the heating element is arranged in the hot water area or at the junction of the water inlet area and the hot water area, one end of the first water outlet pipe is connected with the hot water area, and the other end of the first water outlet pipe passes through the water inlet area and extends out of the hot water tank; It also includes a water inlet pipe, a water inlet buffer is provided in the water inlet area, the water inlet buffer is provided with a water flow channel and a plurality of water outlets, the water flow channel is communicated with the water inlet pipe and the water outlets respectively; the water inlet buffer includes a spraying part, the spraying part is arranged toward the part of the first water outlet pipe located in the water inlet area, and the water outlets are arranged on the spraying part at intervals; a buffer cavity is provided in the spraying part, the water flow channel is communicated with the buffer cavity, the buffer cavity is communicated with the water outlet, and the maximum inner diameter of the buffer cavity is greater than the inner diameter of the water flow channel; It also includes a water pump, which is arranged on the water inlet pipe.

2. The heat exchange structure according to claim 1, characterized in that: The hot water tank includes a high-temperature water portion and a first heat exchange portion, the high-temperature water portion encloses the hot water zone, the first heat exchange portion encloses the water inlet zone, a connecting port is provided between the high-temperature water portion and the first heat exchange portion, and the hot water zone is connected to the water inlet zone through the connecting port.

3. The heat exchange structure according to claim 2, characterized in that: The hot water area and the water inlet area are arranged in sequence from top to bottom, the first water outlet pipe is connected to the top of the high-temperature water part, and the water inlet pipe is connected to the bottom of the first heat exchange part. In the first heat exchange part, the water inlet buffer is arranged on a side of the first water outlet pipe away from the connecting port.

4. The heat exchange structure according to claim 3, characterized in that: The inner diameter of the hot water area near the communicating port is larger than the inner diameter of the communicating port, and the inner diameter of the water inlet area near the communicating port is larger than the inner diameter of the communicating port.

5. The heat exchange structure according to claim 2, characterized in that: The heating element is arranged on one side of the hot water area close to the communication port.

6. The heat exchange structure according to claim 1, characterized in that: The surface of the spraying portion close to the first water outlet pipe is an arc-shaped surface.

7. The heat exchange structure according to any one of claims 1 to 6, characterized in that: The first water outlet pipe includes a second heat exchange portion, the second heat exchange portion is located in the water inlet area, and the second heat exchange portion is a curved structure.

8. The heat exchange structure according to claim 7, characterized in that: At least one portion of the second heat exchange portion is S-shaped, U-shaped or spiral-shaped.

9. The heat exchange structure according to claim 7, characterized in that: The second heat exchange part is a bellows.

10. The heat exchange structure according to any one of claims 1 to 6, characterized in that: It also includes a second water outlet pipe and a mixing valve, one end of the second water outlet pipe is connected to the hot water area, the other end of the second water outlet pipe is connected to the mixing valve, and one end of the first water outlet pipe passes through the water inlet area and is connected to the mixing valve.

11. The heat exchange structure according to claim 10, characterized in that: The second water outlet pipe is provided with a temperature regulating valve, and the temperature regulating valve is used to adjust the flow rate of the second water outlet pipe.

12. The heat exchange structure according to any one of claims 1 to 6, characterized in that: A temperature sensor is arranged in the hot water area.

13. A drinking fountain, characterized in that: It comprises the heat exchange structure as described in any one of claims 1 to 12.

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