A heat exchanger and a water dispenser

Abstract

The present invention provides a heat exchanger and a water dispenser, which include a through connection body, a plurality of hot water pipelines and end caps; several cold water waterways penetrating through both ends of the through connection body are arranged inside the through connection body, the hot water pipelines are arranged inside the cold water waterways, and end caps are arranged at both ends of the through connection body; a cold water inlet and a cold water outlet corresponding to the cold water waterways are arranged on the end caps, and a hot water inlet and a hot water outlet corresponding to the hot water pipelines are arranged on the end caps. By processing the upper and lower shells into an integrated structure, the present invention effectively simplifies the processing technology, simplifies the structure, makes production and processing easier to achieve, effectively improves the qualified rate, and avoids the problem that the hot water pipelines affect the stability of the combined structure of the upper and lower shells.

Description

Technical Field

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

[0002] In life, for the sake of health, people preferably drink warm water. However, the acquisition of warm water mainly still relies on cooling the boiled water, which is very time-consuming. A device can be designed to cool hot water into warm water by means of heat exchange, so that warm water can be obtained without waiting. The heat exchangers applied in actual life often have complex structures, which require multiple complex processing techniques.

[0003] Generally, the structure of a heat exchanger includes an upper shell, a lower shell provided with a cold water waterway, and a pipeline of a hot water waterway. The hot water pipeline is arranged in the cold water waterway, and then the upper shell is installed into the lower shell. Therefore, the processing of the above structures needs to be carried out separately, making the processing technique complex. At the same time, affected by the forming of the hot water pipeline, the combination of the upper shell and the lower shell will be greatly affected no matter what production techniques such as glue connection, hot plate welding, ultrasonic welding, etc. are used, and the qualified rate is extremely low. Summary of the Invention

[0004] In order to overcome the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a heat exchanger and a water dispenser to effectively solve the above problems.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] A heat exchanger, which includes a straight-through connection body, a plurality of hot water pipelines and end covers; several cold water waterways penetrating through both ends of the straight-through connection body are arranged in the straight-through connection body, the hot water pipelines are arranged in the cold water waterways, and end covers are arranged at both ends of the straight-through connection body; cold water inlets and cold water outlets corresponding to the cold water waterways are arranged on the end covers, and hot water inlets and hot water outlets corresponding to the hot water pipelines are arranged on the end covers.

[0007] As a further improvement of the present invention: the hot water pipeline includes multiple groups of U-shaped tubes and a first U-shaped connecting tube, and adjacent U-shaped tubes are connected by the first U-shaped connecting tube to form a single hot water waterway, and hot water inlets and hot water outlets respectively connected to both ends of the hot water waterway are arranged on the end covers.

[0008] As a further improvement of the present invention: the U-shaped tube is a U-shaped stainless steel corrugated pipe, and the first U-shaped connecting tube is made of stainless steel or silicone material.

[0009] As a further improvement of the present invention: the U-shaped tube is composed of two straight tubes and a second U-shaped connecting tube; both ends of the second U-shaped connecting tube are respectively connected to the two straight tubes.

[0010] As a further improvement of the present invention: the straight pipe is made of stainless steel, and the U-shaped connecting pipe is made of stainless steel or silicone.

[0011] As a further improvement of the present invention: characterized in that adjacent cold water waterways are interconnected to form a single cold water waterway, and a cold water inlet and a cold water outlet respectively connected to both ends of the single cold water waterway are provided on the end cover.

[0012] As a further improvement of the present invention: the U-shaped pipe penetrates through both ends of the cold water waterway, a first installation groove corresponding to the U-shaped pipe is provided in the end cover, a second installation groove corresponding to the first U-shaped connecting pipe is provided in the end cover, one end of the U-shaped pipe is arranged in the end cover through the first installation groove, and one end of the first U-shaped connecting pipe is arranged in the end cover through the second installation groove.

[0013] As a further improvement of the present invention: a limiting member is provided on the straight-through connection body, and the limiting member is arranged at the bending part of the U-shaped pipe or at the bending part of the first U-shaped connecting pipe.

[0014] As a further improvement of the present invention: the several cold water waterways are arranged in one of the shapes of a ring, a semi-ring, a triangle, a straight line, a tiled square, and an S-shape on the straight-through connection body.

[0015] A water dispenser, wherein the water dispenser applies the heat exchanger described in any one of the above.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] By processing the upper and lower shells into an integrated structure, the present invention effectively simplifies the processing technology, simplifies the structure, makes production and processing easier to achieve, effectively improves the qualification rate, and avoids the problem that the hot water pipeline affects the stability of the upper and lower shell combined structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an exploded view of the structure of the present invention.

[0019] Figure 2 It is a partial structure assembly diagram of the present invention.

[0020] Figure 3 It is an overall structure assembly diagram of the present invention.

[0021] Figure 4 It is a structure diagram of the hot water pipeline of the present invention.

[0022] Figure 5 It is a structure diagram of the U-shaped pipe of the present invention.

[0023] Figure 6Explosion schematic diagram of the structure of the prior art.

[0024] Figure 7 Schematic diagram of the structure of the prior art.

[0025] Description of the drawings: 1 - Straight-through connection; 2 - Hot water pipeline; 3 - End cover; 4 - Cold water pipeline; 5 - Cold water inlet; 6 - Cold water outlet; 7 - Hot water inlet; 8 - Hot water outlet; 21 - U-shaped pipe; 22 - First U-shaped connecting pipe; 211 - Straight pipe; 212 - Second U-shaped connecting pipe; 31 - First installation groove; 9 - Limiting part; 100 - Upper shell; 200 - Hot water pipeline; 300 - Lower shell; 400 - Cold water pipeline. Detailed implementation manners

[0026] The present invention will be further described below in conjunction with the description of the drawings and embodiments:

[0027] Prior art:

[0028] As shown in the attached Figures 6-7 As shown, the heat exchanger in the prior art includes an upper shell 100, a hot water pipeline 200 and a lower shell 300; a cold water pipeline 400 is arranged in the lower shell 300. During installation, the hot water pipeline 200 is arranged in the cold water pipeline 400, and then the upper shell 100 is arranged on the lower shell 300, thus completing the assembly of the upper shell 100, the hot water pipeline 200 and the lower shell 300.

[0029] However, although heat exchange is formed between the cold water pipeline 400 and the hot water pipeline 200 after combination, due to the influence of the formation of the hot water pipeline 2, the combination of the upper shell 100 and the lower shell 300 will be greatly affected regardless of the production processes such as glue connection, hot plate welding, ultrasonic welding, etc., and the qualified rate is extremely low. Moreover, the processing processes of the upper shell 100, the lower shell 300, the cold water pipeline 400 and the hot water pipeline 200 are also relatively complex.

[0030] In addition, the traditional hot water pipeline 200 adopts an integral bent structure, that is, a pipe section is bent and processed into a pipeline with multiple bends, which not only brings more complex processes and higher processing difficulties to the processing, but also is difficult to control the accuracy.

[0031] Embodiment 1:

[0032] This embodiment provides as shown in the attached Figures 1-3A heat exchanger as shown, which includes a through-connection body 1, several hot water pipelines 2, and end caps 3; several cold water waterways 4 penetrating through both ends of the through-connection body 1 are provided inside the through-connection body 1, the hot water pipelines 2 are arranged inside the cold water waterways 4, and end caps 3 are arranged at both ends of the through-connection body 1; a cold water inlet 5 and a cold water outlet 6 corresponding to and connected to the cold water waterways 4 are provided on the end caps 3, and a hot water inlet 7 and a hot water outlet 8 corresponding to and connected to the hot water pipelines 2 are provided on the end caps 3.

[0033] In this embodiment, the through-connection body 1 is used to arrange the cold water waterways 4 inside the main body; several hot water pipelines 2 are used to form one or more hot water waterways, and the cold water waterways 4 are used to house the hot water pipelines 2 inside, so that the cold water waterways 4 and the hot water waterways are in contact to achieve heat and cold exchange, and the hot water inside the hot water waterways is cooled to become warm water; the end caps 3 are connected to both ends of the through-connection body 1, aiming to seal the cold water waterways 4 arranged through, and can fix the hot water pipelines 2 extending out of both ends of the through-connection body 1 inside the end caps 3 to realize the fixation of the hot water pipelines 2; the cold water inlet 5 is connected to the water inlet end for inputting cold water, and the cold water outlet 6 is used for outputting cold water. The output cold water can be collected by a collecting device, and the cold water that has absorbed heat can also be recycled after cooling back to cold water. That is, the cold water enters the internal cold water waterways 4 from the cold water inlet 5, and after one or more rounds of heat exchange with the hot water waterways, it comes out from the cold water outlet 6; the hot water inlet 7 is used for inputting hot water, which is connected to the hot water supply end, and the hot water outlet 8 is used for outputting the cooled warm water. That is, the hot water enters the hot water pipelines 2 from the hot water inlet 7, and after one or more rounds of heat exchange with the cold water waterways 4 to complete the cooling of the hot water, it is output from the hot water outlet 8.

[0034] In this embodiment, the prior art is further optimized by combining the upper shell and the lower shell into one integral body, that is, the through-connection body 1 is processed, effectively simplifying the structure of the heat exchanger, making production and processing easier to achieve, effectively improving the qualified rate. In actual production, the qualified rate can reach 99.9%. In addition, for the cold water waterways 4 inside the through-connection body 1, this embodiment adopts an injection molding two-way demolding method to form multiple straight-through arranged connected through-hole waterways, and end caps 3 are added at both ends. The injection molding structure of the end caps 3 and the straight-through arranged through-hole structure are combined to form the cold water waterways 4, and by arranging the hot water waterways inside the cold water waterways 4, the hot water waterways and the cold water waterways 4 are combined and assembled to form the required heat exchange system.

[0035] Embodiment Two:

[0036] This embodiment provides as shown in the appendix Figures 1-4A heat exchanger as shown, which includes a straight-through connection body 1, several hot water pipelines 2 and end caps 3; several cold water waterways 4 running through both ends of the straight-through connection body 1 are provided inside the straight-through connection body 1, the hot water pipelines 2 are arranged inside the cold water waterways 4, and end caps 3 are arranged at both ends of the straight-through connection body 1; a cold water inlet 5 and a cold water outlet 6 corresponding to the cold water waterways 4 are arranged on the end caps 3, and a hot water inlet 7 and a hot water outlet 8 corresponding to the hot water pipelines 2 are arranged on the end caps 3.

[0037] In this embodiment, based on Embodiment 1, and based on multiple cold water waterways 4, the structure of the hot water pipelines 2 is further optimized. As shown in the appendix Figure 4 As shown, the hot water pipelines 2 include multiple groups of U-shaped pipes 21 and a first U-shaped connecting pipe 22. Adjacent U-shaped pipes 21 are connected by the first U-shaped connecting pipe 22 to form a single hot water waterway. A hot water inlet 7 and a hot water outlet 8 respectively connected to both ends of the hot water waterway are arranged on the end caps 3.

[0038] Among them, by connecting adjacent U-shaped pipes 21 through the first U-shaped connecting pipe 22 to form a single hot water waterway, several hot water pipelines 2 are connected through the U-shaped pipes 21 to form a whole, forming a single hot water waterway. The U-shaped pipes 21 and the first U-shaped connecting pipe 22 can be connected by interference fit or can also be connected by a sealing adhesive. Compared with the traditional integral forming structure, dividing the hot water pipelines 2 into U-shaped pipes 21 and U-shaped connecting pipes for processing can further simplify the processing technology and reduce the precision requirements for processing. It only needs to assemble the two together.

[0039] During assembly, only the two ends of the U-shaped pipes 21 need to be passed through two adjacent cold water waterways 4 of the straight-through and extended out of one end of the cold water waterways 4, and then the first U-shaped connecting pipe 22 is connected to these two ends. Repeat the above steps until all the cold water waterways 4 are placed.

[0040] Embodiment 3:

[0041] This embodiment provides a heat exchanger as shown in the appendix Figures 1-4 A heat exchanger as shown, which includes a straight-through connection body 1, several hot water pipelines 2 and end caps 3; several cold water waterways 4 running through both ends of the straight-through connection body 1 are provided inside the straight-through connection body 1, the hot water pipelines 2 are arranged inside the cold water waterways 4, and end caps 3 are arranged at both ends of the straight-through connection body 1; a cold water inlet 5 and a cold water outlet 6 corresponding to the cold water waterways 4 are arranged on the end caps 3, and a hot water inlet 7 and a hot water outlet 8 corresponding to the hot water pipelines 2 are arranged on the end caps 3.

[0042] In this embodiment, the hot water pipeline 2 includes multiple groups of U-shaped pipes 21 and a first U-shaped connecting pipe 22. Adjacent U-shaped pipes 21 are connected by the first U-shaped connecting pipe 22 to form a single hot water circuit. A hot water inlet 7 and a hot water outlet 8 are provided on the end cap 3 and are respectively connected to the two ends of the hot water circuit.

[0043] In this embodiment, based on Embodiment 2, preferably, the U-shaped pipe 21 is a U-shaped stainless steel corrugated pipe, and the first U-shaped connecting pipe 22 is made of stainless steel or silica gel.

[0044] Embodiment 4:

[0045] This embodiment provides a heat exchanger as shown in the appendix Figures 1-5 which includes a straight-through connection body 1, several hot water pipelines 2, and an end cap 3. Several cold water circuits 4 running through both ends of the straight-through connection body 1 are provided inside the straight-through connection body 1. The hot water pipelines 2 are arranged inside the cold water circuits 4. End caps 3 are provided at both ends of the straight-through connection body 1. A cold water inlet 5 and a cold water outlet 6 corresponding to the cold water circuit 4 are provided on the end cap 3, and a hot water inlet 7 and a hot water outlet 8 corresponding to the hot water pipeline 2 are provided on the end cap 3.

[0046] In this embodiment, the hot water pipeline 2 includes multiple groups of U-shaped pipes 21 and a first U-shaped connecting pipe 22. Adjacent U-shaped pipes 21 are connected by the first U-shaped connecting pipe 22 to form a single hot water circuit. A hot water inlet 7 and a hot water outlet 8 are provided on the end cap 3 and are respectively connected to the two ends of the hot water circuit.

[0047] In this embodiment, based on Embodiment 2, the structure of the U-shaped pipe 21 is further optimized. As shown in the appendix Figure 5 the U-shaped pipe 21 consists of two straight pipes 211 and a second U-shaped connecting pipe 212. The two ends of the second U-shaped connecting pipe 212 are respectively connected to the two straight pipes 211. In this way, during the processing technology, only two straight pipes 211 need to be processed, and the second U-shaped connecting pipe 212 can be processed while processing the first U-shaped connecting pipe. There is no need to bend the U-shaped pipe 21 itself. The first U-shaped connecting pipe and the second U-shaped connecting pipe 212 can be set with models according to actual needs and can be bent short pipes of the same model, both of which can connect the long pipes. This further simplifies the processing flow and makes the processing technology simpler. During assembly, the straight pipes 211 are passed through the straight cold water circuit 4 and a part is kept protruding at both ends of the cold water circuit 4. The two ends of two adjacent straight pipes 211 are respectively connected by the first U-shaped connecting pipe 22 and the second U-shaped connecting pipe 212.

[0048] In this embodiment, preferably, the straight pipe 211 is made of stainless steel, and the U-shaped connecting pipe is made of stainless steel or silica gel.

[0049] Example 5:

[0050] This embodiment provides a heat exchanger as shown in the appendix Figures 1-5 which includes a straight-through connection body 1, several hot water pipelines 2 and end caps 3; several cold water waterways 4 penetrating through both ends of the straight-through connection body 1 are provided in the straight-through connection body 1, the hot water pipelines 2 are arranged in the cold water waterways 4, and end caps 3 are arranged at both ends of the straight-through connection body 1; a cold water inlet 5 and a cold water outlet 6 corresponding to and connected with the cold water waterways 4 are arranged on the end caps 3, and a hot water inlet 7 and a hot water outlet 8 corresponding to and connected with the hot water pipelines 2 are arranged on the end caps 3.

[0051] In this embodiment, the hot water pipeline 2 includes multiple groups of U-shaped pipes 21 and a first U-shaped connecting pipe 22. Adjacent U-shaped pipes 21 are connected by the first U-shaped connecting pipe 22 to form a single hot water waterway, and a hot water inlet 7 and a hot water outlet 8 respectively connected to both ends of the hot water waterway are arranged on the end cap 3.

[0052] Based on any one of the above-mentioned Embodiments 1 to 4, adjacent cold water waterways 4 communicate with each other to form a single cold water waterway 4, and a cold water inlet 5 and a cold water outlet 6 respectively connected to both ends of the single cold water waterway 4 are arranged on the end cap 3.

[0053] Example 6:

[0054] This embodiment provides a heat exchanger as shown in the appendix Figures 1-5 which includes a straight-through connection body 1, several hot water pipelines 2 and end caps 3; several cold water waterways 4 penetrating through both ends of the straight-through connection body 1 are provided in the straight-through connection body 1, the hot water pipelines 2 are arranged in the cold water waterways 4, and end caps 3 are arranged at both ends of the straight-through connection body 1; a cold water inlet 5 and a cold water outlet 6 corresponding to and connected with the cold water waterways 4 are arranged on the end caps 3, and a hot water inlet 7 and a hot water outlet 8 corresponding to and connected with the hot water pipelines 2 are arranged on the end caps 3.

[0055] In this embodiment, the hot water pipeline 2 includes multiple groups of U-shaped pipes 21 and a first U-shaped connecting pipe 22. Adjacent U-shaped pipes 21 are connected by the first U-shaped connecting pipe 22 to form a single hot water waterway, and a hot water inlet 7 and a hot water outlet 8 respectively connected to both ends of the hot water waterway are arranged on the end cap 3.

[0056] In this embodiment, based on Embodiment 2, in order to enable the U-shaped pipes 21 and the first U-shaped connecting pipe 22 to fix their positions and not shake randomly in the cold water waterway 4, as shown in the appendix Figure 1As shown, the U-shaped tube 21 penetrates through both ends of the cold water waterway 4. A first installation groove 31 corresponding to the U-shaped tube 21 is provided inside the end cap 3. A second installation groove corresponding to the first U-shaped connecting tube 22 is provided inside the end cap 3. One end of the U-shaped tube 21 is arranged inside the end cap 3 through the first installation groove 31, and one end of the first U-shaped connecting tube 22 is arranged inside the end cap 3 through the second installation groove.

[0057] Through the first installation groove 31 and the second installation groove, both ends of the overall hot water pipeline are fixed and limited, avoiding the shaking of the pipeline, so that the hot water pipeline 2 is fixed and maintained in the middle of the cold water waterway 4, without overly fitting with the inner wall of the cold water waterway 4, which may affect the heat exchange effect or damage the cold water waterway 4 during shaking.

[0058] Embodiment Seven:

[0059] This embodiment provides a heat exchanger as shown in the appendix Figures 1-5 As shown, it includes a straight-through connection body 1, several hot water pipelines 2 and end caps 3; several cold water waterways 4 penetrating through both ends of the straight-through connection body 1 are provided inside the straight-through connection body 1, the hot water pipelines 2 are arranged inside the cold water waterways 4, and end caps 3 are arranged at both ends of the straight-through connection body 1; a cold water inlet 5 and a cold water outlet 6 corresponding to and connected to the cold water waterway 4 are provided on the end cap 3, and a hot water inlet 7 and a hot water outlet 8 corresponding to and connected to the hot water pipeline 2 are provided on the end cap 3.

[0060] In this embodiment, the hot water pipeline 2 includes multiple groups of U-shaped tubes 21 and first U-shaped connecting tubes 22. Adjacent U-shaped tubes 21 are connected by the first U-shaped connecting tubes 22 to form a single hot water waterway. A hot water inlet 7 and a hot water outlet 8 respectively connected to both ends of the hot water waterway are provided on the end cap 3.

[0061] Based on Embodiment Six, during heat exchange, the bending part is the weakest position and is also the most vulnerable to damage during actual use. Therefore, in order to further fix and limit the bending part and increase the force-bearing strength of the bending part, as shown in the appendix Figure 1 As shown, a limiting member 9 is provided on the straight-through connection body 1, and the limiting member 9 is arranged at the bending part of the U-shaped tube 21 or at the bending part of the first U-shaped connecting tube 22.

[0062] By clamping the limiting member 9 in the middle of the bending part, the bending part can be ensured to be fixed under shaking, further limiting it, and effectively increasing the force-bearing strength of the bending part.

[0063] Embodiment Eight:

[0064] This embodiment provides as shown in the appendix Figures 1-5A heat exchanger as shown, which includes a straight-through connection body 1, several hot water pipelines 2, and end covers 3; several cold water waterways 4 that penetrate both ends of the straight-through connection body 1 are provided inside the straight-through connection body 1, the hot water pipelines 2 are arranged inside the cold water waterways 4, and end covers 3 are provided at both ends of the straight-through connection body 1; a cold water inlet 5 and a cold water outlet 6 corresponding to the cold water waterways 4 are provided on the end covers 3, and a hot water inlet 7 and a hot water outlet 8 corresponding to the hot water pipelines 2 are provided on the end covers 3.

[0065] This embodiment is based on any one of the above-mentioned Embodiments 1 to 7. The several cold water waterways 4 are arranged in one of the shapes of a ring, semi-ring, triangle, straight line, tiled square, and S-shaped on the straight-through connection body 1.

[0066] The disadvantage of the straight-line or tiled setting is that it makes the overall floor area relatively large, while the ring-shaped (i.e., circular or semi-circular) setting concentrates the entire pipeline setting, which can effectively reduce the overall volume, and at the same time does not reduce the contact area between the cold water waterways 4 and the hot water waterways, and does not affect the heat exchange efficiency.

[0067] Embodiment 9:

[0068] This embodiment provides a water dispenser, which uses the heat exchanger described in any one of the above-mentioned Embodiments 1 to 8.

[0069] Detailed introduction of the present invention:

[0070] The hot exchange hot water pipeline 2: It is composed of a combination of multiple sections of U-shaped stainless steel corrugated pipes or stainless steel pipes and U-shaped silicone pipes or stainless steel pipes. They can be in interference fit or connected by a sealing adhesive.

[0071] For the cold water waterways 4 of the heat exchanger, the straight-through connection body 1 of the cold water waterways 4 is obtained by an injection molding double-sided demolding method. This structure is superior to the upper and lower cover closing method. The U-shaped stainless steel corrugated pipes or stainless steel pipes of the hot water waterways can be directly sleeved into the straight-through connection body 1 of the cold water waterways 4, and multiple groups of U-shaped stainless steel corrugated pipes or stainless steel pipes of the hot water waterways can be connected in series through U-shaped silicone pipes or U-shaped stainless steel pipes to form a complete hot water waterway system.

[0072] The present invention avoids the situation that the hot water pipeline system adopts an integral bent structure and cannot pass through the cold water waterways 4, so that the cold water waterways 4 system needs to adopt a cover closing scheme. The cover closing scheme is affected by the bending forming accuracy of the stainless steel corrugated pipes or stainless steel pipes, resulting in a very low qualified rate of finished products. At the same time, the bending forming accuracy requirements for the stainless steel corrugated pipes or stainless steel pipes are very high, resulting in low production efficiency and difficult processing problems.

[0073] The processing of the U-shaped stainless steel corrugated pipe or the stainless steel corrugated pipe of the hot water waterway of the present invention is easier, the processing accuracy requirement is not high, and the qualified rate can reach 100%. The hot water waterway can directly pass through the cold water waterway 4 through the solution of disassembling and combining the U-shaped structure. The cold water waterway 4 can be formed by combining the injection-molded straight-through connection body 1 and the injection-molded end cover 3. Their combination can be realized by ultrasonic welding process, sealant bonding process, etc. The relevant process is easier to realize the connection than the way of closing the cold water waterway 4 required by the integral bending process of the hot water waterway, and the production efficiency and qualified rate are also higher.

[0074] The waterway arrangement of the U-shaped pipe 21 of the present invention is not limited to the semi-circular shape in the figure, and can be circular, triangular, flat square or variable S-shaped, etc., similar to the U-shaped disassembly and combination, and can be used in the heat exchange systems for hot water cooling of various products such as water dispensers, water purifying and drinking machines, cooked water machines, and hot water machines.

[0075] The main functions of the present invention: applied to various heat exchange systems for heat exchange, by setting the upper and lower covers as a straight-through connection body, the cold and hot waterways do not affect the structure of the straight-through connection body itself when exchanging heat, and by setting the hot water pipeline as a detachable and combined structure of a U-shaped pipe and a U-shaped connecting pipe that is easier to process, the processing technology can be simplified and the production qualified rate is higher.

[0076] In summary, after reading the documents of the present invention, various corresponding transformation schemes made by those of ordinary skill in the art without creative mental labor according to the technical solutions and technical concepts of the present invention all fall within the scope protected by the present invention.

Claims

1. A heat exchanger, characterized in that, It includes a straight-through connection body, several hot water pipelines and end caps; several cold water waterways running through both ends of the straight-through connection body are provided inside the straight-through connection body, the hot water pipelines are arranged inside the cold water waterways, and end caps are arranged at both ends of the straight-through connection body; a cold water inlet and a cold water outlet corresponding to the cold water waterways are provided on the end caps, and a hot water inlet and a hot water outlet corresponding to the hot water pipelines are provided on the end caps; the hot water pipelines include multiple groups of U-shaped pipes and a first U-shaped connecting pipe, and adjacent U-shaped pipes are connected by the first U-shaped connecting pipe to form a single hot water waterway, and a hot water inlet and a hot water outlet respectively connected to both ends of the hot water waterway are provided on the end caps; the U-shaped pipes run through both ends of the cold water waterways, a first installation groove corresponding to the U-shaped pipes is provided inside the end caps, a second installation groove corresponding to the first U-shaped connecting pipe is provided inside the end caps, one end of the U-shaped pipe is arranged inside the end cap through the first installation groove, and one end of the first U-shaped connecting pipe is arranged inside the end cap through the second installation groove; the several cold water waterways are arranged in one of the shapes of a ring, a semi-ring, a triangle, a straight line, a tiled square, and an S shape on the straight-through connection body.

2. The heat exchanger according to claim 1, characterized in that, The U-shaped pipe is a U-shaped stainless steel corrugated pipe, and the first U-shaped connecting pipe is made of stainless steel or silicone.

3. A heat exchanger according to claim 1, characterized in that, The U-shaped pipe consists of two straight pipes and a second U-shaped connecting pipe; both ends of the second U-shaped connecting pipe are respectively connected to the two straight pipes.

4. The heat exchanger according to claim 3, characterized in that, The straight pipes are made of stainless steel, and the U-shaped connecting pipe is made of stainless steel or silicone.

5. A heat exchanger according to any one of claims 1 - 4, characterized in that, Adjacent cold water waterways are interconnected to form a single cold water waterway, and a cold water inlet and a cold water outlet respectively connected to both ends of the single cold water waterway are provided on the end caps.

6. The heat exchanger according to claim 1, characterized in that, A limiting member is provided on the straight-through connection body, and the limiting member is arranged at the bending part of the U-shaped pipe or at the bending part of the first U-shaped connecting pipe.

7. A water dispenser, characterized in that, The water dispenser applies the heat exchanger described in any one of the above claims 1-6.

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