Heat exchange pipeline and water dispenser

Abstract

The utility model discloses a heat exchange pipeline and a water dispenser, and belongs to the technical field of water dispensers. Only a first to-be-connected port of a reversing valve is not communicated with other pipelines, and a cold water outlet pipeline is connected into the first to-be-connected port; due to the fact that only one four-way pipe is arranged and only the second to-be-connected port of the four-way pipe is not communicated with other pipelines, the water inlet end of the hot container is connected into the second to-be-connected port; due to the fact that the inner water inlet end extending out of the second port of the four-way pipe is communicated with the seventh port of the second three-way pipe, the second three-way pipe connected with the extending-out pipeline of the four-way pipe can be recognized, only the third to-be-connected port of the second three-way pipe is not communicated with other pipelines, and the water outlet end of the hot container is connected into the third to-be-connected port. Then a warm water outlet pipeline is connected into a fourth to-be-connected port which is not communicated with other pipelines; therefore, by the adoption of the heat exchange pipeline, assembly personnel can conveniently and clearly connect the cold water outlet pipeline, the warm water outlet pipeline and the hot container into the heat exchange pipeline, and pipeline misconnection is prevented.

Description

Technical Field

[0001] This utility model relates to the field of water dispenser technology, and in particular to a heat exchange pipeline and a water dispenser. Background Technology

[0002] Water dispensers equipped with warm water dispensing function are generally equipped with a heat exchanger. Hot and cold water exchange heat in the heat exchanger, cooling the hot water to warm water for direct drinking and preheating the cold water to warm water to replenish the dispenser's heating element and boil it. However, because the heat exchanger needs to be connected to cold water, warm water, and hot water pipes, and also requires reversing valves and regulating valves to adjust the water flow direction in the heat exchange pipes, the existing heat exchange pipes are quite complex. This makes it easy for pipes to be misconnected when connecting to other pipes. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a heat exchange pipeline and a water dispenser, which makes it easy for assemblers to clearly connect the cold water outlet pipeline, the warm water outlet pipeline and the heating element into the heat exchange pipeline, and prevents incorrect pipe connections.

[0004] The heat exchange pipeline according to the first aspect of the present invention includes:

[0005] A heat exchanger is provided with an inner tube and an outer tube. The outer tube is sleeved outside the inner tube. The inner tube is provided with an inner water inlet and an inner water outlet. The outer tube is provided with an outer water inlet and an outer water outlet.

[0006] A reversing valve is provided with a first receiving port, a first outlet, and a second outlet. The reversing valve controls the first receiving port to connect to either the first outlet or the second outlet.

[0007] The four-way pipe has a first port, a second port, a third port, and a second port to be connected. The outgoing water end is connected to the first port, the inner water inlet end passes through the first port and the second port in sequence, the gap between the second port and the outer wall of the inner water inlet end is closed, and the third port is connected to the second outlet.

[0008] The first three-way pipe has a fourth port, a fifth port and a sixth port. The outer water inlet is connected to the fourth port, the inner water outlet passes through the fourth port and the fifth port in sequence, the gap between the fifth port and the outer side wall of the inner water outlet is closed, and the sixth port is connected to the first outlet.

[0009] The second three-way pipe is provided with a seventh port, an eighth port and a third port to be connected, wherein the seventh port is connected to the inner water inlet end;

[0010] The third three-way pipe is provided with a ninth port, a tenth port and a fourth port to be connected, wherein the ninth port is connected to the inner water outlet end;

[0011] A regulating valve connects the eighth port and the tenth port.

[0012] The heat exchange pipeline according to the embodiments of this utility model has at least the following beneficial effects: During the process of connecting the heat exchange pipeline to the cold water outlet pipeline, the heating element, and the warm water outlet pipeline, the reversing valve is first identified. Since the reversing valve only has a first port that is not yet connected to other pipelines, the cold water outlet pipeline is connected to the first port. Since there is only one four-way pipe and only the second port that is not yet connected to other pipelines, the inlet end of the heating element is connected to the second port. Since the inner inlet end extending from the second port of the four-way pipe connects to the seventh port of the second three-way pipe, the second three-way pipe connected to the pipe extending from the four-way pipe can be identified. Since only the third port of the second three-way pipe is not yet connected to other pipelines, the outlet end of the heating element is connected to the third port. Then, the warm water outlet pipeline is connected to the fourth port that is not yet connected to other pipelines. Therefore, using the heat exchange pipeline of this utility model, it is convenient for assemblers to clearly connect the cold water outlet pipeline, the warm water outlet pipeline, and the heating element into the heat exchange pipeline, preventing incorrect pipe connections.

[0013] According to some embodiments of this utility model, the inner water inlet is disposed in the outer water outlet, and the inner water outlet is disposed in the outer water inlet.

[0014] According to some embodiments of the present invention, the second port is disposed opposite to the first port, the fifth port is disposed opposite to the fourth port, the seventh port abuts against the second port, and the ninth port abuts against the fifth port.

[0015] According to some embodiments of this utility model, the seventh port is connected to the second port, and the heat exchange pipeline further includes:

[0016] The first retaining ring is fitted onto the outside of the inner water inlet end, and the first retaining ring blocks the seventh port from the second port;

[0017] And / or, the ninth port is connected to the fifth port, and the heat exchange pipeline further includes:

[0018] The second retaining ring is fitted onto the outside of the inner water outlet end, and the second retaining ring blocks the ninth port from the fifth port.

[0019] According to some embodiments of the present invention, the four-way pipe is provided with a first threaded sleeve, the first threaded sleeve is rotatably sleeved on the outside of the second port, the seventh port is provided with a first external thread, and the first threaded sleeve is engaged with the first external thread;

[0020] And / or, the first tee pipe is provided with a second threaded sleeve, the second threaded sleeve is rotatably sleeved on the outside of the fifth port, the ninth port is provided with a second external thread, and the second threaded sleeve is engaged with the second external thread.

[0021] According to some embodiments of the present invention, the heat exchanger further includes:

[0022] The third threaded sleeve is rotatably sleeved on the outside of the water outlet end, and the first port is provided with a third external thread, the third threaded sleeve and the third external thread are engaged;

[0023] And / or, a fourth threaded sleeve is rotatably fitted onto the outside of the outer water inlet end, the fourth port is provided with a fourth external thread, and the fourth threaded sleeve engages with the fourth external thread.

[0024] According to some embodiments of the present invention, the heat exchanger further includes:

[0025] The housing has an inner tube and an outer tube disposed within it. The housing has two mounting holes, and the outer water inlet and the outer water outlet are respectively fixed in the two mounting holes.

[0026] The water dispenser according to a second aspect of the present invention includes the heat exchange pipeline as described in the above embodiments.

[0027] The water dispenser according to the embodiments of this utility model has at least the following beneficial effects: During the process of connecting the heat exchange pipeline to the cold water outlet pipeline, the heating element, and the warm water outlet pipeline, the reversing valve is first identified. Since the reversing valve only has a first port that is not yet connected to other pipelines, the cold water outlet pipeline is connected to the first port. Since there is only one four-way pipe and only the second port that is not yet connected to other pipelines, the inlet end of the heating element is connected to the second port. Since the inner inlet end extending from the second port of the four-way pipe connects to the seventh port of the second three-way pipe, the second three-way pipe connected to the pipe extending from the four-way pipe can be identified. Since the second three-way pipe only has a third port that is not yet connected to other pipelines, the outlet end of the heating element is connected to the third port. Then, the warm water outlet pipeline is connected to the fourth port that is not yet connected to other pipelines. Therefore, using the heat exchange pipeline of this utility model, it is convenient for assemblers to clearly connect the cold water outlet pipeline, the warm water outlet pipeline, and the heating element into the heat exchange pipeline, preventing incorrect pipe connections.

[0028] According to some embodiments of the present invention, the water dispenser further includes:

[0029] The cold water outlet pipe is connected to the first port to be connected;

[0030] The heating element has an inlet and an outlet, the inlet being connected to the second port to be connected, and the outlet being connected to the third port to be connected.

[0031] The warm water outlet pipe is connected to the fourth port to be connected.

[0032] According to some embodiments of the present invention, the water dispenser includes a normal mode and a disinfection mode;

[0033] When the water dispenser is in the normal mode, the reversing valve connects the first waiting port and the first outlet, and the cold water outlet pipe supplies water to the heat exchanger.

[0034] When the water dispenser is in the disinfection mode, the reversing valve connects the first waiting port and the second outlet, and the cold water outlet pipe supplies water to the heating tank. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a heat exchange pipeline according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of a water dispenser according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the liquid flow in normal mode of a water dispenser according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the liquid flow in the disinfection mode of a water dispenser according to an embodiment of the present invention.

[0039] Reference numerals: Heat exchanger 100, inner tube 110, inner inlet 111, inner outlet 112, outer tube 120, outer inlet 121, outer outlet 122, third threaded sleeve 130, fourth threaded sleeve 140, shell 150, reversing valve 200, first waiting port 210, first outlet 220, second outlet 230, four-way pipe 300, first port 310, second port 320, third port 330, second waiting port 340, first threaded sleeve 350 First tee pipe 400, fourth port 410, fifth port 420, sixth port 430, second threaded sleeve 440, second tee pipe 500, seventh port 510, eighth port 520, third port to be connected 530, third tee pipe 600, ninth port 610, tenth port 620, fourth port to be connected 630, regulating valve 700, cold water outlet pipe 800, heating element 810, inlet 811, outlet 812, warm water outlet pipe 820. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the terms front, back, up, down, axial, circumferential, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0043] In the description of this utility model, it should be noted that terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0044] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0045] Reference Figure 1 As shown, this embodiment provides a heat exchange pipeline.

[0046] The heat exchange pipeline includes a heat exchanger 100, a reversing valve 200, a four-way pipe 300, a first three-way pipe 400, a second three-way pipe 500, a third three-way pipe 600, and a regulating valve 700.

[0047] The heat exchanger 100 is provided with an inner tube 110 and an outer tube 120 sleeved outside the inner tube 110. The inner tube 110 is provided with an inner water inlet 111 and an inner water outlet 112. The outer tube 120 is provided with an outer water inlet 121 and an outer water outlet 122. The inner water inlet 111 and the inner water outlet 112 extend out of the outer tube 120 to the outside.

[0048] The reversing valve 200 is provided with a first waiting port 210, which is used to connect to the cold water outlet pipe.

[0049] The reversing valve 200 is also provided with a first outlet 220 and a second outlet 230. The reversing valve 200 controls the first waiting port 210 to connect to the first outlet 220 or the second outlet 230.

[0050] The four-way pipe 300 is provided with a second connection port 340, which is used to connect to the water inlet of the heating element.

[0051] The four-way pipe 300 is also provided with a first port 310, a second port 320 and a third port 330. The first port 310 is connected to the water outlet 122 of the outer pipe 120. The water inlet 111 of the inner pipe 110 extends into the four-way pipe 300 from the first port 310 and then extends out from the second port 320. The gap between the outer wall of the water inlet 111 of the inner pipe 110 and the inner wall of the second port 320 is sealed. The second outlet 230 of the reversing valve 200 is connected to the third port 330.

[0052] The first tee pipe 400 is equipped with a fourth port 410, a fifth port 420, and a sixth port 430.

[0053] The fourth port 410 is connected to the outer inlet 121 of the outer pipe 120. The inner outlet 112 of the inner pipe 110 extends from the fourth port 410 into the first tee pipe 400 and then extends out from the fifth port 420. The gap between the outer wall of the inner outlet 112 of the inner pipe 110 and the inner wall of the fifth port 420 is sealed. The first outlet 220 of the reversing valve 200 is connected to the sixth port 430.

[0054] The second three-way pipe 500 is equipped with a third waiting port 530, which is used to connect to the water outlet of the heating tank.

[0055] The second three-way pipe 500 is also provided with a seventh port 510 and an eighth port 520. The inner water inlet end 111 of the inner pipe 110 extends from the second port 320 and connects to the seventh port 510.

[0056] The third tee pipe 600 is equipped with a fourth port 630, which is used to connect to the warm water outlet pipe.

[0057] The third tee pipe 600 is also equipped with a ninth port 610 and a tenth port 620. The inner outlet end 112 of the inner pipe 110 extends from the fifth port 420 and connects to the ninth port 610.

[0058] The regulating valve 700 is connected to the eighth port 520 and the tenth port 620 at its two ends, respectively. The regulating valve 700 can regulate the flow rate of hot water from the eighth port 520 to the tenth port 620, so that hot water can flow from the third waiting port 530 of the second three-way pipe 500 through the eighth port 520 to the tenth port 620 of the third three-way pipe 600. Then, the hot water flows with the warm water from the fourth waiting port 630 of the third three-way pipe 600 to the warm water outlet pipe. By changing the opening of the regulating valve 700, the flow rate of hot water flowing directly to the warm water outlet pipe can be increased or decreased, thereby adjusting the temperature of the warm water discharged from the warm water outlet pipe.

[0059] When the reversing valve 200 controls the first waiting port 210 to connect to the first outlet 220, the cold water in the cold water outlet pipe flows through the first outlet 220 to the sixth port 430 of the first tee pipe 400. Then, the cold water flows from the fourth port 410 of the first tee pipe 400 to the outer inlet 121 of the outer pipe 120, while the hot water flows from the third waiting port 530 of the second tee pipe 500 to the inner inlet 111 of the inner pipe 110. Thus, the hot water in the inner pipe 110 and the cold water in the outer pipe 120 exchange... Heat exchange occurs in the heater 100. Afterward, the inner outlet 112 of the inner pipe 110 outputs warm water to the ninth port 610 of the third tee pipe 600. The warm water is output from the fourth waiting port 630 of the third tee pipe 600 to the warm water outlet pipeline. The outlet 122 of the outer pipe 120 outputs preheated cold water to the first port 310 of the four-way pipe 300. The preheated cold water is output from the second waiting port 340 of the four-way pipe 300 to the inlet of the heating tank to replenish the water volume of the heating tank.

[0060] When the reversing valve 200 controls the first waiting port 210 to connect to the second outlet 230, the cold water in the cold water outlet pipe flows through the second outlet 230 to the third port 330 of the four-way pipe 300. Then, the cold water is output from the second waiting port 340 of the four-way pipe 300 to the inlet of the heating tank. The cold water does not need to flow through the long outer pipe 120, thus realizing the rapid water replenishment of the heating tank.

[0061] During the process of connecting the heat exchange pipeline to the cold water outlet pipeline, the heating element, and the warm water outlet pipeline, first identify the reversing valve 200. Since the reversing valve 200 only has a first waiting port 210 that is not yet connected to other pipelines, connect the cold water outlet pipeline to the first waiting port 210. Since there is only one four-way pipe 300 and the four-way pipe 300 only has a second waiting port 340 that is not yet connected to other pipelines, connect the water inlet of the heating element to the second waiting port 340. Since the inner water inlet 111 extending from the second port 320 of the four-way pipe 300 connects to the second three-way pipe... The seventh port 510 of 500 can identify the second tee pipe 500 connected to the pipe extending from the four-way pipe 300. The second tee pipe 500 only has the third port 530 that is not yet connected to other pipes. Connect the outlet of the hot water tank to the third port 530, and then connect the warm water outlet pipe to the fourth port 630 that is not yet connected to other pipes. Therefore, by using the heat exchange pipeline of this utility model, it is convenient for the assembler to clearly connect the cold water outlet pipe, the warm water outlet pipe and the hot water tank into the heat exchange pipeline, and prevent the pipes from being connected incorrectly.

[0062] In some embodiments, refer to Figure 1 As shown, the inner water inlet 111 extends outward from the outer water outlet 122, and the inner water outlet 112 extends outward from the outer water inlet 121.

[0063] The inner tube 110 is located inside the outer tube 120. The inner water inlet 111 extends outward from the outer water outlet 122, and the inner water outlet 112 extends outward from the outer water inlet 121. There is no need to open holes in the side wall of the outer tube 120, which helps to improve the sealing performance of the outer tube 120. In addition, the hot water flow direction of the inner tube 110 is opposite to the cold water flow direction of the outer tube 120, which helps to fully exchange heat between the hot water in the inner tube 110 and the cold water in the outer tube 120, thereby improving the heat exchange efficiency of the heat exchanger.

[0064] In some embodiments, refer to Figure 1 As shown, the first port 310 and the second port 320 of the four-way pipe 300 are positioned opposite each other, and the seventh port 510 of the second three-way pipe 500 abuts against the second port 320 of the four-way pipe 300. The fourth port 410 and the fifth port 420 of the first three-way pipe 400 are positioned opposite each other, and the ninth port 610 of the third three-way pipe 600 abuts against the fifth port 420 of the first three-way pipe 400.

[0065] By using the second port 320 of the four-way pipe 300 to abut the seventh port 510 of the second three-way pipe 500, it is helpful to integrate the four-way pipe 300 and the second three-way pipe 500 into a whole, making the heat exchange pipeline more compact.

[0066] By using the fifth port 420 of the first tee pipe 400 to abut the ninth port 610 of the third tee pipe 600, it is helpful to integrate the first tee pipe 400 and the third tee pipe 600 into a whole, making the heat exchange pipeline more compact.

[0067] In some embodiments, refer to Figure 1 As shown, the second port 320 is connected to the seventh port 510. The heat exchange pipeline is also equipped with a first retaining ring, which is fitted on the outside of the inner water inlet 111. The first retaining ring seals the gap between the inner side wall of the second port 320 and the outer side wall of the inner water inlet 111, thereby isolating the second port 320 and the seventh port 510.

[0068] The fifth port 420 is connected to the ninth port 610. The heat exchange pipeline is also equipped with a second retaining ring, which is fitted on the outside of the inner water outlet 112. The second retaining ring seals the gap between the inner wall of the fifth port 420 and the outer wall of the inner water outlet 112, thereby isolating the fifth port 420 and the ninth port 610.

[0069] In some embodiments, refer to Figure 1 As shown, the four-way pipe 300 is also provided with a first threaded sleeve 350. The first threaded sleeve 350 is rotatably installed on the outside of the second port 320. The first threaded sleeve 350 can rotate around the axis of the second port 320. The seventh port 510 is cylindrical in shape. The outer side wall of the seventh port 510 is provided with a first external thread. The first threaded sleeve 350 is engaged with the first external thread.

[0070] The four-way pipe 300 is connected to the seventh port 510 of the second three-way pipe 500 by the first threaded sleeve 350. Then the inner water inlet 111 can be directly inserted into the second three-way pipe 500 from the seventh port 510, making the assembly of the second three-way pipe 500, the four-way pipe 300, the inner water inlet 111, and the outer water outlet 122 more convenient.

[0071] In some embodiments, refer to Figure 1 As shown, the first tee pipe 400 is also provided with a second threaded sleeve 440. The second threaded sleeve 440 is rotatably installed on the outside of the fifth port 420. The second threaded sleeve 440 can rotate around the axis of the fifth port 420. The ninth port 610 is cylindrical in shape. The outer side wall of the ninth port 610 is provided with a second external thread. The second threaded sleeve 440 is engaged with the second external thread.

[0072] The first tee pipe 400 is connected to the ninth port 610 of the third tee pipe 600 by the second screw sleeve 440. Then the inner water outlet 112 can directly extend into the third tee pipe 600 from the ninth port 610, making the assembly of the third tee pipe 600, the first tee pipe 400, the inner water outlet 112, and the outer water inlet 121 more convenient.

[0073] In some embodiments, refer to Figure 1 As shown, the heat exchanger 100 is also provided with a third threaded sleeve 130. The third threaded sleeve 130 is rotatably installed on the outside of the water outlet 122. The third threaded sleeve 130 rotates around the axis of the water outlet 122. The first port 310 is cylindrical in shape. The outer wall of the first port 310 is provided with a third external thread. The third threaded sleeve is fitted into the third external thread.

[0074] The outlet water end 122 of the heat exchanger 100 is connected to the first port 310 of the four-way pipe 300 by the third threaded sleeve 130, which makes the installation of the heat exchanger 100 and the four-way pipe 300 more compact, and the inner water inlet end 111 can be directly inserted into the four-way pipe 300, making the assembly of the second three-way pipe 500, the four-way pipe 300, the inner water inlet end 111, and the outlet water end 122 more convenient.

[0075] In some embodiments, refer to Figure 1 As shown, the heat exchanger 100 is also provided with a fourth threaded sleeve 140, which is rotatably installed outside the outer water inlet 121. The fourth threaded sleeve 140 rotates around the axis of the outer water inlet 121. The fourth port 410 is cylindrical in shape, and the outer side wall of the fourth port 410 is provided with a fourth external thread. The fourth threaded sleeve is fitted with the fourth external thread.

[0076] The outer water inlet 121 of the heat exchanger 100 is connected to the fourth port 410 of the first tee pipe 400 by the fourth screw sleeve 140, which makes the installation of the heat exchanger 100 and the first tee pipe 400 more compact, and the inner water outlet 112 can be directly inserted into the first tee pipe 400, making the assembly of the third tee pipe 600, the first tee pipe 400, the inner water outlet 112, and the outer water inlet 121 more convenient.

[0077] In some embodiments, refer to Figure 1 As shown, the heat exchanger 100 is also provided with a shell 150, which covers the outside of the inner tube 110 and the outer tube 120. The shell 150 is provided with two mounting holes, and the outer water inlet 121 and the outer water outlet 122 are respectively fixed in the two mounting holes. Then the third threaded sleeve 130 and the fourth threaded sleeve 140 are abutted against the shell 150.

[0078] The housing 150 fixes the outer tube 120, which helps the housing 150 support the third threaded sleeve 130 and the fourth threaded sleeve 140, thereby allowing the housing to support the four-way pipe 300 and the first three-way pipe 400, making the heat exchange pipeline more compact, so that the heat exchange pipeline can be assembled separately and then installed into the water dispenser to connect to other pipes.

[0079] Reference Figures 2 to 4 As shown, this utility model also provides a water dispenser.

[0080] The water dispenser includes the heat exchange piping as described in the above embodiments.

[0081] During the process of connecting the heat exchange pipeline to the cold water outlet pipeline, the heating element, and the warm water outlet pipeline, first identify the reversing valve 200. Since the reversing valve 200 only has a first waiting port 210 that is not yet connected to other pipelines, connect the cold water outlet pipeline to the first waiting port 210. Since there is only one four-way pipe 300 and the four-way pipe 300 only has a second waiting port 340 that is not yet connected to other pipelines, connect the water inlet of the heating element to the second waiting port 340. Since the inner water inlet 111 extending from the second port 320 of the four-way pipe 300 connects to the second three-way pipe... The seventh port 510 of 500 can identify the second tee pipe 500 connected to the pipe extending from the four-way pipe 300. The second tee pipe 500 only has the third port 530 that is not yet connected to other pipes. Connect the outlet of the hot water tank to the third port 530, and then connect the warm water outlet pipe to the fourth port 630 that is not yet connected to other pipes. Therefore, by using the heat exchange pipeline of this utility model, it is convenient for the assembler to clearly connect the cold water outlet pipe, the warm water outlet pipe and the hot water tank into the heat exchange pipeline, and prevent the pipes from being connected incorrectly.

[0082] In some embodiments, refer to Figure 2 As shown, the water dispenser is also equipped with a cold water outlet pipe 800, a heating element 810, and a warm water outlet pipe 820.

[0083] The cold water outlet pipe 800 is connected to the first port 210 of the reversing valve 200. The heating element 810 is also equipped with an inlet 811 and an outlet 812. The inlet 811 of the heating element 810 is connected to the second port 340 of the four-way pipe 300, and the outlet 812 of the heating element 810 is connected to the third port 530 of the second three-way pipe 500. The warm water outlet pipe 820 is connected to the fourth port 630 of the third three-way pipe 600.

[0084] In some embodiments, refer to Figure 3 As shown, the water dispenser has switched to normal mode.

[0085] When the water dispenser switches to normal mode, the reversing valve 200 controls the first waiting port 210 to connect to the first outlet 220.

[0086] The cold water from the cold water outlet pipe 800 flows through the first outlet 220 to the sixth port 430 of the first tee pipe 400. Then, the cold water flows from the fourth port 410 of the first tee pipe 400 to the outer inlet 121 of the outer pipe 120. Meanwhile, the hot water flows from the third outlet 530 of the second tee pipe 500 to the inner inlet 111 of the inner pipe 110. The hot water in the inner pipe 110 and the cold water in the outer pipe 120 exchange heat in the heat exchanger 100. After that, the hot water in the inner pipe 110... The inner outlet 112 outputs warm water to the ninth port 610 of the third tee pipe 600. The warm water is output from the fourth waiting port 630 of the third tee pipe 600 to the warm water outlet pipe 820. The outer outlet 122 of the outer pipe 120 outputs preheated cold water to the first port 310 of the four-way pipe 300. The preheated cold water is output from the second waiting port 340 of the four-way pipe 300 to the inlet 811 of the heating tank 810 to replenish the water volume of the heating tank 810.

[0087] When the water dispenser switches to the disinfection mode, the reversing valve 200 controls the first waiting port 210 to connect to the second outlet 230.

[0088] The cold water from the cold water outlet pipe 800 flows through the second outlet 230 to the third port 330 of the four-way pipe 300. Then, the cold water is output from the second waiting port 340 of the four-way pipe 300 to the inlet 811 of the heat tank 810. The cold water does not need to flow through the long outer pipe 120, thus realizing the rapid water replenishment of the heat tank 810.

[0089] The boiling water generated by the heating element 810 flows through the third port 530 of the second three-way pipe 500, then through the second three-way pipe 500, the inner inlet 111, the inner pipe 110, the inner outlet 112, the third three-way pipe 600, and the warm water outlet pipe 820, thus disinfecting the above pipes at high temperature.

[0090] Furthermore, since the water in the pipes related to the outer pipe 120 remains still, the hot water flowing in the inner pipe 110 heats the water in the outer pipe 120, causing the temperature of the outer pipe 120 to rise as well. This allows for high-temperature disinfection of the outer pipe 120, the four-way pipe 300, and the first three-way pipe 400.

[0091] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A heat exchange tube circuit, characterized by, The heat exchanger comprises: a heat exchanger pipe, which is provided with an inner pipe and an outer pipe, the outer pipe is sleeved outside the inner pipe, the inner pipe is provided with an inner water inlet end and an inner water outlet end, and the outer pipe is provided with an outer water inlet end and an outer water outlet end; a reversing valve, which is provided with a first to-be-connected port, a first outlet and a second outlet, the reversing valve controls the first to-be-connected port to communicate with the first outlet or the second outlet; a four-way pipe, which is provided with a first port, a second port, a third port and a second to-be-connected port, the outer water outlet end communicates with the first port, the inner water inlet end passes through the first port and the second port in sequence, the gap between the second port and the outer side wall of the inner water inlet end is closed, and the third port communicates with the second outlet; a first three-way pipe, which is provided with a fourth port, a fifth port and a sixth port, the outer water inlet end communicates with the fourth port, the inner water outlet end passes through the fourth port and the fifth port in sequence, the gap between the fifth port and the outer side wall of the inner water outlet end is closed, and the sixth port communicates with the first outlet; a second three-way pipe, which is provided with a seventh port, an eighth port and a third to-be-connected port, the seventh port communicates with the inner water inlet end; a third three-way pipe, which is provided with a ninth port, a tenth port and a fourth to-be-connected port, the ninth port communicates with the inner water outlet end; an adjusting valve, which communicates the eighth port with the tenth port.

2. The heat exchange conduit of claim 1, wherein, The inner water inlet end is arranged in the outer water outlet end, and the inner water outlet end is arranged in the outer water inlet end.

3. The heat exchange conduit of claim 2, wherein, The second port is arranged opposite to the first port, the fifth port is arranged opposite to the fourth port, the seventh port abuts against the second port, and the ninth port abuts against the fifth port.

4. The heat exchange conduit of claim 3, wherein, The seventh port is connected with the second port, and the heat exchange pipeline further comprises: a first blocking ring, which is sleeved outside the inner water inlet end, and the first blocking ring blocks the seventh port and the second port; and / or the ninth port is connected with the fifth port, and the heat exchange pipeline further comprises: a second blocking ring, which is sleeved outside the inner water outlet end, and the second blocking ring blocks the ninth port and the fifth port.

5. The heat exchange conduit of claim 4, wherein, The four-way pipe is provided with a first screw sleeve, the first screw sleeve is rotationally sleeved outside the second port, the seventh port is provided with a first external thread, and the first screw sleeve is matched with the first external thread; and / or the first three-way pipe is provided with a second screw sleeve, the second screw sleeve is rotationally sleeved outside the fifth port, the ninth port is provided with a second external thread, and the second screw sleeve is matched with the second external thread.

6. The heat exchange conduit of claim 2, wherein, The heat exchanger further comprises: a third screw sleeve, which is rotationally sleeved outside the outer water outlet end, the first port is provided with a third external thread, and the third screw sleeve is matched with the third external thread; and / or a fourth screw sleeve, which is rotationally sleeved outside the outer water inlet end, the fourth port is provided with a fourth external thread, and the fourth screw sleeve is matched with the fourth external thread.

7. The heat exchange conduit of claim 6, wherein, The heat exchanger further comprises: a shell, the inner pipe and the outer pipe are arranged in the shell, the shell is provided with two mounting holes, and the outer water inlet end and the outer water outlet end are respectively fixed in the two mounting holes.

8. A water dispenser, characterized by The heat exchange pipeline comprises any one of claims 1 to 7.

9. The water dispenser of claim 8, wherein, The water dispenser further comprises: a cold water outlet pipeline connected with the first connecting port; a hot tank having a water inlet end and a water outlet end, wherein the water inlet end is connected with the second connecting port, and the water outlet end is connected with the third connecting port; a warm water outlet pipeline connected with the fourth connecting port.

10. The water dispenser of claim 9, wherein, The water dispenser comprises a normal mode and a sterilization mode; when the water dispenser is in the normal mode, the reversing valve is connected with the first connecting port and the first outlet, and the cold water outlet pipeline supplies water to the heat exchanger; when the water dispenser is in the sterilization mode, the reversing valve is connected with the first connecting port and the second outlet, and the cold water outlet pipeline supplies water to the hot tank.

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