Heat exchanger and water boiler comprising same

Abstract

The heat exchanger comprises a cooling pipe and a plurality of heat pipes, the cooling pipe is sleeved on the outer sides of the heat pipes, the heat pipes extend from one end of the cooling pipe to the other end of the cooling pipe and extend out of the other end of the cooling pipe, and high-temperature water flows from one end of each heat pipe to the other end of the corresponding heat pipe; the plurality of heat pipes are arranged in the cooling pipe in parallel, the plurality of heat pipes are not communicated with one another, and low-temperature water circulates between the cooling pipe and the plurality of heat pipes so as to exchange heat with high-temperature water in the plurality of heat pipes; according to the scheme, the heat pipes are sleeved with the cooling pipes, high-temperature water in the heat pipes is cooled through low-temperature water between the cooling pipes and the heat pipes, heat exchange is completed, meanwhile, each heat pipe is independently designed, the heat pipes are arranged in parallel and do not communicate with one another, little water is stored in each heat pipe, the flow limiting effect is achieved, meanwhile, the heat exchange area with the low-temperature water is increased, and the heat exchange efficiency is improved. And the heat exchange effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of water boilers, and in particular to a heat exchanger and a water boiler containing the same. Background Technology

[0002] Currently, water purifiers with four faucets on the market, i.e., those with heat exchangers, tend to have a higher water flow rate when fewer faucets are turned on, which can easily cause warm water to splash. Also, after the water purifier has been sitting for a long time, the water stored in the heat pipe will cool down and become cold water. Since the existing technology allows for a large amount of water to be stored in a single heat pipe, a lot of cold water needs to be released to produce warm water, resulting in a poor user experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of existing technology that easily cause hot water to splash and excessive water storage, and to provide a heat exchanger and a water boiler containing the same.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] This utility model provides a heat exchanger for a water dispenser, characterized in that the heat exchanger includes a cooling pipe and a plurality of heat pipes, the cooling pipe is sleeved on the outside of the heat pipes, the heat pipes extend from one end of the cooling pipe to the other end of the cooling pipe and extend beyond the other end of the cooling pipe, and high-temperature water flows from one end of the heat pipe to the other end.

[0006] Multiple heat pipes are arranged side by side inside the cooling pipe, and the multiple heat pipes are not interconnected. Low-temperature water is circulated between the cooling pipe and the multiple heat pipes to exchange heat with the high-temperature water inside the multiple heat pipes.

[0007] In this scheme, a heat pipe is installed inside the cooling pipe. The high-temperature water inside the heat pipe is cooled by the low-temperature water between the cooling pipe and the heat pipe, thus completing the heat exchange. At the same time, each heat pipe is designed independently, arranged in parallel and not connected to each other. Each heat pipe has a small amount of water, which also serves to limit the flow. This increases the heat exchange area with the low-temperature water and improves the heat exchange effect.

[0008] Preferably, the cooling pipe and the heat pipe disposed within the cooling pipe are stacked around a predetermined axis.

[0009] In this scheme, stacking around a preset axis can save space, accommodate longer pipes in a smaller space, and thus improve the heat exchange efficiency per unit space.

[0010] Preferably, the cooling pipe has a first inlet and a first outlet, wherein low-temperature water enters the space between the cooling pipe and the heat pipe from the first inlet, and the low-temperature water flows out of the space between the cooling pipe and the heat pipe from the first outlet;

[0011] The cooling pipe also has a second inlet and a second outlet, the heat pipe enters the cooling pipe from the second inlet and extends outward from the heat exchanger at the second outlet.

[0012] Preferably, the heat exchanger further includes a first water pipe and a sealing plug, the second inlet is connected to the first water pipe, and the first water pipe and the cooling pipe are sealed together at the second inlet by the sealing plug.

[0013] The sealing plug also includes multiple through holes, the second inlet extends into the through holes, and the first water pipe is connected to the heat pipe through the through holes.

[0014] In this solution, the sealing plug seals the space inside the first water pipe and the space between the cooling pipe and the heat pipe to prevent low-temperature water from seeping into the first water pipe. At the same time, the sealing plug is provided with a through hole that passes through the heat pipe, so that the high-temperature water input in the first water pipe can be diverted to multiple heat pipes.

[0015] Preferably, the outer diameter of the heat pipe is 3-4 mm and the inner diameter is 2.4-2.5 mm.

[0016] In this design, the inner and outer diameters are used to limit the flow rate of water when draining different numbers of heat pipes, while allowing for faster water discharge. The smaller pipe diameter also reduces the amount of water stored in the heat pipes, thus improving the water discharge efficiency of the heat exchanger.

[0017] Preferably, the second outlet is sealed by the sealing plug, and the heat pipe extends through the through hole to the outside of the cooling pipe.

[0018] In this design, the second outlet is sealed with a sealing plug, and the heat pipe extends outward from the cooling pipe through the through hole. This arrangement prevents cooling water from overflowing from the cooling pipe. At the same time, the heat pipe extends through the through hole to the far end where water needs to be discharged, allowing the three heat pipes to discharge water at different locations for easy use.

[0019] Preferably, the heat exchanger further includes a first fixing nut, the second inlet is provided with an external thread, the first fixing nut is provided with an internal thread, the first fixing nut and the second inlet are threadedly engaged, the sealing plug is fixed between the first fixing nut and the second inlet, and the end of the first water pipe is provided with a first flange, the first flange is fixed to the second inlet by the first fixing nut;

[0020] The second outlet is provided with an external thread, the first fixing nut and the second outlet are threadedly engaged, and the sealing plug is fixed between the first fixing nut and the second outlet.

[0021] In this design, the first water pipe is fixed at the second inlet by the first flange and the first fixing nut, which is a simple structure and can also clamp a sealing plug at the same time. The simple structure completes the sealing and is strong and easy to install and remove. Warm water is directly output through the heat pipe at the second outlet, and the sealing plug is directly fixed by the first fixing nut, which improves the sealing performance of the cooling pipe.

[0022] Preferably, a heat exchanger is provided between the first outlet and the second inlet, and the first outlet and the second inlet are connected through the heat exchanger;

[0023] The first inlet and the first outlet are respectively located on the side walls of both ends of the heat exchanger, and the second inlet and the second outlet are respectively located on the two end faces of the heat exchanger; wherein, the first outlet is arranged close to the second inlet, and the first inlet is arranged close to the second outlet.

[0024] In this scheme, the first outlet and the second inlet are equipped with heat tanks, and the first outlet and the second inlet are connected. This allows the low-temperature water that has been cooled and heat exchanged at the first outlet to gain further heat and be fed into the heat pipe as high-temperature water, thus saving water resources, heating time and heating consumption.

[0025] The first inlet and the first outlet are set up to allow low-temperature water to enter and exit, carrying away the heat from the heat pipe and achieving a heat exchange effect. The first inlet and the first outlet are respectively arranged on the side walls at both ends of the cooling pipe so that the cooling water can pass through all parts of the cooling pipe as much as possible before leaving, thereby improving the heat exchange efficiency. The first inlet is close to the second outlet, and the first outlet is close to the second inlet. The flow direction of the low-temperature water and the water inside the heat pipe is opposite. Since the temperature of the heat pipe is lower as it gets closer to the outlet, the lower the temperature of the low-temperature water is required as it gets closer to the outlet for further cooling. Setting the flow direction of the low-temperature water and the water inside the heat pipe to be opposite can improve the heat exchange efficiency.

[0026] Preferably, the heat exchanger further includes a sealing ring, a second water pipe, and a second fixing nut. The first inlet and the first outlet are both connected to the second water pipe and sealed by the sealing ring.

[0027] The sealing ring is an L-shaped sealing ring, including a radial portion and an axial portion; a second flange is provided at the end of the second water pipe;

[0028] Both the first inlet and the first outlet are threadedly connected to the second fixing nut. The second flange and the radial portion are sandwiched between the second fixing nut and the corresponding first inlet or first outlet, and the axial portion extends into the corresponding first inlet or first outlet.

[0029] In this design, the first inlet and the first outlet are directly connected to the second water pipe, which is fixed by the second flange and the second fixing nut. The structure is simple, robust, and easy to install and remove. A sealing ring with radial and axial portions is used to seal the first inlet or the first outlet to the second water pipe, thus preventing low-temperature water leakage.

[0030] Preferably, the portion of the heat pipe extending beyond the other end of the cooling pipe bends at the other end of the cooling pipe and extends along the radial direction of the cooling pipe.

[0031] The heat pipes extend in different directions along the radial direction of the cooling pipe.

[0032] In this design, the heat pipes are first bent and then extended radially along the cooling pipes. At the same time, multiple heat pipes extend in different directions along the radial direction of the cooling pipes, which allows the heat pipes to be dispersed and extended to a position before water is discharged. This increases the distance between the heat pipes, making it easier to install insulation materials such as insulation pads on the outside of the heat pipes, improving the insulation effect and facilitating the installation of the water dispenser.

[0033] This utility model also provides a water dispenser, characterized in that the water dispenser includes a heat exchanger, a solenoid valve and a water outlet, the heat pipe of the heat exchanger extends to the solenoid valve, and when the solenoid valve is turned on, the heat pipe is connected to the water outlet.

[0034] In this solution, a heat exchanger is applied to the water dispenser, which avoids splashing due to excessive flow when using a single tap. It also reduces water storage and the outflow of large amounts of cold water after prolonged periods of inactivity, thus improving the user experience.

[0035] The positive and progressive effects of this utility model are as follows: In this solution, a heat pipe is installed inside the cooling pipe, and the high-temperature water inside the heat pipe is cooled by the low-temperature water between the cooling pipe and the heat pipe to complete the heat exchange. At the same time, each heat pipe is designed independently, and the heat pipes are arranged in parallel without being connected to each other. Each heat pipe has a small amount of water and plays a role in limiting the flow. At the same time, the heat exchange area with the low-temperature water is increased, and the heat exchange effect is improved. Attached Figure Description

[0036] Figure 1 This is a perspective view of the heat exchanger in this utility model.

[0037] Figure 2 for Figure 1 A schematic diagram of the cross-section of the cooling pipe of the heat exchanger at point A.

[0038] Figure 3 This is a schematic diagram of the longitudinal section of the heat exchanger at the first inlet in this utility model.

[0039] Figure 4 This is a schematic diagram of the longitudinal section of the heat exchanger at the first outlet in this utility model.

[0040] Figure 5 This is a schematic diagram of the longitudinal section of the heat exchanger at the second inlet in this utility model.

[0041] Figure 6 This is a schematic diagram of the longitudinal section of the heat exchanger at the second outlet in this utility model.

[0042] Explanation of reference numerals in the attached drawings: Cooling pipe 1, First inlet 11, First outlet 12, Second inlet 13, Second outlet 14, Heat pipe 2, First water pipe 3, First flange 31, Sealing plug 4, Through hole 41, First fixing nut 5, Second water pipe 6, Second flange 61, Sealing ring 7, Radial part 71, Axial part 72, Second fixing nut 8, Solenoid valve 9, Preset axis P1. Detailed Implementation

[0043] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0044] like Figure 1 and Figure 2 As shown, this embodiment provides a heat exchanger for a water dispenser. The heat exchanger includes a cooling pipe 1 and a plurality of heat pipes 2. The cooling pipe 1 is sleeved on the outside of the heat pipes 2. The heat pipes 2 extend from one end of the cooling pipe 1 to the other end of the cooling pipe 1 and extend beyond the other end of the cooling pipe 1. High-temperature water flows from one end of the heat pipe 2 to the other end.

[0045] Multiple heat pipes 2 are arranged in parallel inside the cooling pipe 1, and the multiple heat pipes 2 are not interconnected. Low-temperature water is used to flow between the cooling pipe 1 and the multiple heat pipes 2 to exchange heat with the high-temperature water inside the multiple heat pipes 2.

[0046] In this embodiment, a heat pipe 2 is installed inside the cooling pipe 1. The high-temperature water inside the heat pipe 2 is cooled by the low-temperature water between the cooling pipe 1 and the heat pipe 2, thus completing the heat exchange. At the same time, each heat pipe 2 is designed independently, arranged in parallel and not connected to each other. Each heat pipe 2 has a small amount of water and plays a role in limiting the flow. At the same time, it increases the heat exchange area with the low-temperature water and improves the heat exchange effect.

[0047] like Figure 1 As shown, in this embodiment, the cooling pipe 1 and the heat pipe 2 disposed within the cooling pipe 1 are stacked around a predetermined axis P1. Figure 1 As shown, the two ends of cooling pipe 1 are spaced apart in space. The preset axis P1 is a reference line extending between the two ends of cooling pipe 1. The extension direction of the preset axis P1 can be determined according to the installation scenario of the heat exchanger. Stacking around the preset axis P1 can save space, accommodate longer pipes in a smaller space, and thus improve the heat exchange efficiency per unit space.

[0048] like Figure 1As shown, in this embodiment, the cooling pipe 1 has a first inlet 11 and a first outlet 12. Low-temperature water enters the space between the cooling pipe 1 and the heat pipe 2 from the first inlet 11 and flows out of the space between the cooling pipe 1 and the heat pipe 2 from the first outlet 12. The cooling pipe 1 also has a second inlet 13 and a second outlet 14. The heat pipe 2 enters the cooling pipe 1 from the second inlet 13 and extends outward from the heat exchanger at the second outlet 14.

[0049] like Figure 5 As shown, the heat exchanger in this embodiment also includes a first water pipe 3 and a sealing plug 4. The second inlet 13 is connected to the first water pipe 3. The first water pipe 3 and the cooling pipe 1 are sealed together at the second inlet 13 by the sealing plug 4. The sealing plug 4 also includes a plurality of through holes 41. The second inlet 13 extends into the through holes 41. The first water pipe 3 is connected to the heat pipe 2 through the through holes 41.

[0050] In this embodiment, the sealing plug 4 seals the space inside the first water pipe 3 and the space between the cooling pipe 1 and the heat pipe 2 to prevent low-temperature water from seeping into the first water pipe 3. At the same time, the sealing plug 4 is provided with a through hole 41 and passes through the heat pipe 2 to allow the high-temperature water input in the first water pipe 3 to flow into multiple heat pipes 2.

[0051] like Figure 2 As shown, in this embodiment, the outer diameter of the heat pipe 2 is 3-4 mm, and the inner diameter is 2.4-2.5 mm.

[0052] In this embodiment, the flow rate is limited by the pipe diameter when draining water from different numbers of heat pipes 2 with the inner and outer diameters of these pipes. At the same time, water can be drained faster, and the smaller pipe diameter also reduces the water stored in the heat pipes 2, thus improving the water draining effect of the heat exchanger.

[0053] like Figure 1 and Figure 6 As shown, in this embodiment, the second outlet 14 is sealed by the sealing plug 4, and the heat pipe 2 extends outward from the cooling pipe 1 through the through hole 41.

[0054] In this embodiment, the second outlet 14 is sealed by the sealing plug 4, and the heat pipe 2 extends outward from the cooling pipe 1 through the through hole 41. This arrangement can prevent cooling water from overflowing from the cooling pipe 1. At the same time, the heat pipe 2 extends through the through hole 41 to the far end where water needs to be discharged, so that the three heat pipes 2 can discharge water at different positions, which is convenient for use.

[0055] like Figure 5 and Figure 6As shown, the heat exchanger in this embodiment also includes a first fixing nut 5, a second inlet 13 with an external thread, a first fixing nut 5 with an internal thread, the first fixing nut 5 and the second inlet 13 being threadedly engaged, a sealing plug 4 being fixed between the first fixing nut 5 and the second inlet 13, a first flange 31 being provided at the end of the first water pipe 3, the first flange 31 being fixed at the second inlet 13 by the first fixing nut 5; a second outlet 14 with an external thread, the first fixing nut 5 and the second outlet 14 being threadedly engaged, and a sealing plug 4 being fixed between the first fixing nut 5 and the second outlet 14.

[0056] In this embodiment, the first water pipe 3 is fixed at the second inlet 13 by the first flange 31 and the first fixing nut 5. The structure is simple and can simultaneously clamp the sealing plug 4. The sealing is completed with a simple structure and the structure is firm and easy to install and remove. Warm water is directly output through the heat pipe 2 at the second outlet 14. The sealing plug 4 is directly fixed through the first fixing nut 5, which improves the sealing performance of the cooling pipe 1.

[0057] like Figure 1 As shown, in this embodiment, a heat tank (not shown) is provided between the first outlet 12 and the second inlet 13, and the first outlet 12 and the second inlet 13 are connected through the heat tank; the first inlet 11 and the first outlet 12 are respectively located on the side walls of the two ends of the heat exchanger, and the second inlet 13 and the second outlet 14 are respectively located on the two end faces of the heat exchanger; wherein, the first outlet 12 is arranged close to the second inlet 13, and the first inlet 11 is arranged close to the second outlet 14.

[0058] In this embodiment, the first outlet 12 and the second inlet 13 are provided with heat tanks, and the first outlet 12 and the second inlet 13 are connected to each other. This allows the low-temperature water that has been cooled by heat exchange at the first outlet 12 to be further heated and then fed into the heat pipe 2 as high-temperature water, thus saving water resources, heating time and heating consumption.

[0059] The first inlet 11 and the first outlet 12 are set to allow low-temperature water to enter and exit, carrying away the heat on the heat pipe 2 and achieving a heat exchange effect. The first inlet 11 and the first outlet 12 are respectively arranged on the side walls of the two ends of the cooling pipe 1 so that the cooling water can pass through all positions in the cooling pipe 1 as much as possible before leaving, thereby improving the heat exchange efficiency. The first inlet 11 is close to the second outlet 14, and the first outlet 12 is close to the second inlet 13, so that the flow direction of the low-temperature water and the water inside the heat pipe 2 is opposite. Since the temperature of the heat pipe 2 is lower as it gets closer to the outlet, the lower the temperature of the low-temperature water is required as it gets closer to the outlet for further cooling. Setting the flow direction of the low-temperature water and the water inside the heat pipe 2 to be opposite can improve the heat exchange efficiency.

[0060] like Figure 3 and Figure 4As shown, the heat exchanger in this embodiment also includes a sealing ring 7, a second water pipe 6, and a second fixing nut 8. The first inlet 11 and the first outlet 12 are both connected to the second water pipe 6 and sealed by the sealing ring 7. The sealing ring 7 is an L-shaped sealing ring 7, including a radial portion 71 and an axial portion 72. A second flange 61 is provided at the end of the second water pipe 6. The first inlet 11 and the first outlet 12 are both threadedly connected to the second fixing nut 8. The second flange 61 and the radial portion 71 are sandwiched between the second fixing nut 8 and the corresponding first inlet 11 or first outlet 12, and the axial portion 72 extends into the corresponding first inlet 11 or first outlet 12.

[0061] In this embodiment, the first inlet 11 and the first outlet 12 are directly connected to the second water pipe 6. The second water pipe 6 is fixed by the second flange 61 and the second fixing nut 8. The structure is simple, strong and easy to install and remove. A sealing ring 7 including a radial part 71 and an axial part 72 is used to seal the first inlet 11 or the first outlet 12 to the second water pipe 6, thereby preventing low-temperature water leakage.

[0062] like Figure 1 As shown, in this embodiment, the portion of the heat pipe 2 that extends beyond the other end of the cooling pipe 1 bends at the other end of the cooling pipe 1 and extends along the radial direction of the cooling pipe 1; multiple heat pipes 2 extend in different radial directions along the cooling pipe 1.

[0063] In this embodiment, the heat pipe 2 is first bent and then extends radially along the cooling pipe 1. At the same time, multiple heat pipes 2 extend in different directions along the radial direction of the cooling pipe 1, which can disperse the heat pipes 2 and extend them to a position before water comes out. This can increase the distance between the heat pipes 2, making it easier to install insulation materials such as insulation pads on the outside of the heat pipes 2, improving the insulation effect and facilitating the installation of the water dispenser.

[0064] like Figure 1 As shown, this embodiment also provides a water dispenser, which includes a heat exchanger, a solenoid valve 9 and a water outlet. The heat pipe 2 of the heat exchanger extends to the solenoid valve 9, and when the solenoid valve 9 is turned on, the heat pipe 2 is connected to the water outlet. In this embodiment, the three heat pipes 2 and the solenoid valve 9 are connected by water pipes, which are arranged on the same plane, and each pair of adjacent heat pipes 2 are arranged perpendicular to each other.

[0065] In this embodiment, the heat exchanger is applied to the water dispenser, which avoids splashing due to excessive flow when using a single tap. It also reduces water storage and the outflow of large amounts of cold water after prolonged periods of inactivity, thus improving the user experience.

[0066] In other alternative embodiments, the number of heat pipes 2 can be any number instead of 3, and the arrangement of the heat pipes 2 is not limited to adjacent and perpendicular arrangement on the same plane, as long as the warm water after heat exchange can be directed to the solenoid valve 9.

Claims

1. A heat exchanger for a water boiler, characterized in that: The heat exchanger includes a cooling pipe and a plurality of heat pipes, wherein the cooling pipe is sleeved on the outside of the heat pipe, the heat pipe extends from one end of the cooling pipe to the other end of the cooling pipe and extends beyond the other end of the cooling pipe, and high-temperature water flows from one end of the heat pipe to the other end; The plurality of heat pipes are arranged in parallel in the cooling pipe, and the plurality of heat pipes are not connected to each other. Low-temperature water flows between the cooling pipe and the plurality of heat pipes to exchange heat with high-temperature water in the plurality of heat pipes.

2. The heat exchanger according to claim 1, characterized in that The cooling pipe and the heat pipe arranged in the cooling pipe are stacked and arranged around a preset axis.

3. The heat exchanger according to claim 1, characterized in that The cooling pipe has a first inlet and a first outlet, low-temperature water enters the space between the cooling pipe and the heat pipe from the first inlet, and low-temperature water flows out of the space between the cooling pipe and the heat pipe from the first outlet; The cooling pipe also has a second inlet and a second outlet. The heat pipe enters the cooling pipe from the second inlet and extends out of the heat exchanger at the second outlet.

4. The heat exchanger according to claim 3, characterized in that The heat exchanger further comprises a first water pipe and a sealing plug, the second inlet is communicated with the first water pipe, the first water pipe and the cooling pipe are sealed and connected at the second inlet through the sealing plug, The sealing plug further includes a plurality of through holes, the second inlet extends into the through holes, and the first water pipe is connected to the heat pipe through the through holes.

5. The heat exchanger according to claim 4, characterized in that The second outlet is sealed by the sealing plug, and the heat pipe passes through the through hole and extends to the outside of the cooling pipe.

6. The heat exchanger according to claim 5, characterized in that The heat exchanger further comprises a first fixing nut, the second inlet is provided with an external thread, the first fixing nut is provided with an internal thread, the first fixing nut and the second inlet thread cooperate, the sealing plug is fixed between the first fixing nut and the second inlet, a first flange is provided at the end of the first water pipe, and the first flange is fixed at the second inlet by the first fixing nut; The second outlet is provided with an external thread, the first fixing nut and the second outlet are threadedly matched, and the sealing plug is fixed between the first fixing nut and the second outlet.

7. The heat exchanger according to claim 3, characterized in that A heat liner is arranged between the first outlet and the second inlet, and the first outlet and the second inlet are connected through the heat liner; The first inlet and the first outlet are respectively located on the side walls of the two end portions of the heat exchanger, and the second inlet and the second outlet are respectively located on the two end surfaces of the heat exchanger; wherein the first outlet is arranged close to the second inlet, and the first inlet is arranged close to the second outlet.

8. The heat exchanger according to claim 3, characterized in that The heat exchanger further comprises a sealing ring, a second water pipe and a second fixing nut, wherein the first inlet and the first outlet are both connected to the second water pipe and sealed by the sealing ring; The sealing ring is an L-shaped sealing ring, including a radial portion and an axial portion; a second flange is provided at the end of the second water pipe; The first inlet and the first outlet are both threadedly connected with the second fixing nut, the second flange and the radial portion are clamped between the second fixing nut and the corresponding first inlet or first outlet, and the axial portion extends into the corresponding first inlet or first outlet.

9. The heat exchanger according to claim 1, characterized in that: The portion of the heat pipe extending beyond the other end of the cooling pipe is bent at the other end of the cooling pipe and extends along the radial direction of the cooling pipe; The plurality of heat pipes extend along different radial directions of the cooling pipe.

10. A water boiler, characterized in that: The water boiler comprises a heat exchanger, a solenoid valve and a water outlet as described in any one of claims 1 to 9, a heat pipe of the heat exchanger extends to the solenoid valve, and when the solenoid valve is turned on, the heat pipe is connected to the water outlet.

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