Three-channel heat exchanger and water outlet device

Abstract

The utility model provides a three-channel heat exchanger and a water outlet device, and relates to the technical field of heat exchange equipment. Comprising a shell and further comprises a first sleeve, a second sleeve and a third sleeve which are arranged in the shell, the second sleeve is arranged in the first sleeve in a sleeved mode, and a gap is formed between the second sleeve and the first sleeve to form a first flow channel; and the third sleeve is arranged in the second sleeve in a sleeved mode, a gap is formed between the third sleeve and the second sleeve to form a second flow channel, a third flow channel is formed in the third sleeve, and the second flow channel is suitable for being communicated with water with the temperature different from that of the first flow channel and that of the third flow channel so that heat exchange between the adjacent flow channels can be achieved. Through the scheme, the heat exchange efficiency can be improved, and the size is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a three-channel heat exchanger and a water outlet device. Background Art

[0002] The countertop water purifiers currently on the market use a heat exchanger to cool down the boiled water to obtain warm boiled water. The existing heat exchanger structure is relatively complex, and in order to ensure the heat exchange effect of the heat exchanger, the heat exchange area needs to be increased, which requires the heat exchanger to be larger in size, affecting the occupied space. In addition, the existing heat exchange module generally only exchanges heat outside the hot water channel, which requires a longer heat exchange formation to fully exchange heat for the water in the hot water channel, and the heat exchange efficiency is low. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a three-channel heat exchanger to solve the problem of low heat exchange efficiency of the existing heat exchanger.

[0004] The utility model adopts the following scheme: the application provides a three-channel heat exchanger, including a shell, and also including a first sleeve, a second sleeve and a third sleeve arranged in the shell, wherein the second sleeve is sleeved in the first sleeve and a gap is formed between the second sleeve and the first sleeve to form a first flow channel, the third sleeve is sleeved in the second sleeve and a gap is formed between the second sleeve and the second sleeve to form a second flow channel, a third flow channel is formed inside the third sleeve, and the second flow channel is suitable for connecting water with a temperature different from that of the first flow channel and the third flow channel to facilitate heat exchange between adjacent flow channels.

[0005] Furthermore, the water flow direction of the second flow channel is opposite to the water flow directions of the first flow channel and the third flow channel, and the water flow directions of the first flow channel and the third flow channel are the same.

[0006] Furthermore, the shell includes a first flow channel water inlet, a first flow channel water outlet, a second flow channel water inlet, a second flow channel water outlet, a third flow channel water inlet, and a third flow channel water outlet, and the first flow channel water inlet, the second flow channel water outlet and the third flow channel water inlet are arranged at the same end, and the first flow channel water outlet, the second flow channel water inlet and the third flow channel water outlet are arranged at the same other end.

[0007] Furthermore, the shell includes an upper cover and a bottom cover connected to each other, a sealing member is provided on the bottom cover, and the first sleeve, the second sleeve and the third sleeve are connected to the sealing member to achieve sealing between the sleeves.

[0008] Furthermore, the first sleeve is connected end to end at the end through multiple sections of first connecting pipes to form a circuitous first flow channel, the second sleeve is connected end to end at the end through multiple sections of second connecting pipes to form a circuitous second flow channel, and the third sleeve is connected end to end at the end through multiple sections of third connecting pipes to form a circuitous third flow channel.

[0009] Furthermore, a first connecting flow channel suitable for connecting one end of an adjacent first connecting tube, a second connecting flow channel suitable for connecting one end of an adjacent second connecting tube, and a third connecting flow channel suitable for connecting one end of an adjacent third connecting tube are alternately formed at both ends of the bottom cover to respectively form the circuitous first flow channel, second flow channel and third flow channel.

[0010] Furthermore, the first connecting flow channel, the second connecting flow channel, and the third connecting flow channel are arranged sequentially from the inside to the outside.

[0011] The utility model also provides a water outlet device, comprising any one of the three-channel heat exchangers described above.

[0012] Beneficial effects:

[0013] By arranging a first sleeve, a second sleeve and a third sleeve which are nested with each other, and passing water having a temperature different from that of the first sleeve and the second sleeve into the second sleeve, heat exchange can be achieved both inside and outside the second sleeve, thereby achieving higher heat exchange efficiency in a smaller space and greatly reducing the volume of the entire heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic cross-sectional structure diagram of a three-channel heat exchanger according to an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the exploded structure of a three-channel heat exchanger according to an embodiment of the utility model;

[0016] Figure 3 This is a schematic structural diagram of a flow channel group of a three-channel heat exchanger according to an embodiment of the utility model;

[0017] Figure numerals: upper cover 1, first flow channel water inlet 11, first flow channel water outlet 12, second flow channel water inlet 13, second flow channel water outlet 14, third flow channel water inlet 15, third flow channel water outlet 16, bottom cover 2, sealing member 3, first connecting flow channel 21, second connecting flow channel 22, third connecting flow channel 23, first sleeve 4, second sleeve 5, third sleeve 6, first flow channel 7, second flow channel 8, third flow channel 9. DETAILED DESCRIPTION

[0018] Combination Figures 1 to 3As shown, this embodiment provides a water outlet device, including a three-channel heat exchanger. The three-channel heat exchanger includes a shell, and also includes a first sleeve 4, a second sleeve 5 and a third sleeve 6 arranged in the shell, wherein the second sleeve 5 is sleeved in the first sleeve 4 and a gap is formed between the first sleeve 4 to form a first flow channel 7, the third sleeve 6 is sleeved in the second sleeve 5 and a gap is formed between the second sleeve 5 to form a second flow channel 8, and a third flow channel 9 is formed inside the third sleeve 6, and the second flow channel 8 is suitable for connecting water with a temperature different from that of the first flow channel 7 and the third flow channel 9 to facilitate heat exchange between adjacent flow channels.

[0019] In this embodiment, the water outlet device can be a device such as a water dispenser, and the three-channel heat exchanger is used to cool the hot water of the water dispenser to form warm water outflow. Specifically, the three-channel heat exchanger includes a shell, a seal 3 and a flow channel group. The shell includes an upper cover 1 and a bottom cover 2, and the seal 3 is arranged between the upper cover 1 and the bottom cover 2. The flow channel group includes the first sleeve 4, the second sleeve 5 and the third sleeve 6. The flow channel group is arranged on the seal 3 to achieve sealing between different flow channels.

[0020] Combination Figures 1 to 3 As shown, in this embodiment, the first sleeve 4 is connected end to end at the end through multiple sections of first connecting pipes to form a circuitous first flow channel 7, the second sleeve 5 is connected end to end at the end through multiple sections of second connecting pipes to form a circuitous second flow channel 8, and the third sleeve 6 is connected end to end at the end through multiple sections of third connecting pipes to form a circuitous third flow channel 9. Here, the first connecting pipe, the second connecting pipe and the third connecting pipe are all made of metal pipes with high heat transfer coefficients, such as copper pipes, to improve heat exchange efficiency. Here, the diameter of the first connecting tube is larger than that of the second connecting tube, and the diameter of the second connecting tube is larger than that of the third connecting tube, so that a gap is formed between the first connecting tube and the second connecting tube to form the first flow channel 7, and a gap is formed between the second connecting tube and the third connecting tube to form the second flow channel 8, and a third flow channel 9 is formed separately inside the third connecting tube, and the second flow channel 8 is arranged between the third flow channel 9 and the first flow channel 7. When hot water is passed into the second flow channel 8, cold water can be passed into the third flow channel 9 and the first flow channel 7, so that the inside and outside of the second flow channel 8 are surrounded by cold water, which greatly increases the heat exchange area, thereby improving the heat exchange efficiency. In a preferred embodiment, the water flow direction of the second flow channel 8 can be set to be opposite to the water flow direction of the first flow channel 7 and the third flow channel 9, and the water flow direction of the first flow channel 7 and the third flow channel 9 is the same. The heat exchange efficiency can be further improved by reverse flow. In this embodiment, the metal tube and the seal 3 are integrally formed to ensure the sealing effect.

[0021] Combination Figure 1 to Figure 2As shown, the upper cover 1 includes a first flow channel water inlet 11, a first flow channel water outlet 12, a second flow channel water inlet 13, a second flow channel water outlet 14, a third flow channel water inlet 15, and a third flow channel water outlet 16, and the first flow channel water inlet 11, the second flow channel water outlet 14 and the third flow channel water inlet 15 are arranged at the same end, and the first flow channel water outlet 12, the second flow channel water inlet 13 and the third flow channel water outlet 16 are arranged at the same other end. Thus, different water flow direction settings can be easily realized.

[0022] Combination Figures 2 to 3 As shown, the sealing member 3 can be set to a rubber material, which is used to fix the first connecting pipe, the second connecting pipe and the third connecting pipe. The first connecting flow channel 21 suitable for connecting one end of the adjacent first connecting pipe, the second connecting flow channel 22 suitable for connecting one end of the adjacent second connecting pipe and the third connecting flow channel 23 suitable for connecting one end of the adjacent third connecting pipe are staggered at both ends of the bottom cover 2 to form the first flow channel 7, the second flow channel 8 and the third flow channel 9 respectively. That is, the adjacent first connecting pipes are connected through the first connecting flow channel 21, and the first connecting flow channels 21 at both ends are staggered. Taking the three adjacent first connecting pipes as an example, one end of the first connecting pipe is connected to the same end of the adjacent second connecting pipe through the first connecting flow channel 21, and the other end of the second connecting pipe is connected to the same end of the third connecting pipe through another first connecting flow channel 21 on the other side, thereby forming a first flow channel 7 adjacent to each other, and the second flow channel 8 is similarly arranged to the third flow channel 9. Here, the first connecting pipe is shorter than the second connecting pipe, and the second connecting pipe is shorter than the third connecting pipe, so that the first connecting flow channel 21, the second connecting flow channel 22, and the third connecting flow channel 23 can be arranged from the inside to the outside, optimizing the space layout in the shell and facilitating installation. Here, connecting pipes of different lengths can be connected at different positions respectively through connecting pipes of different lengths, which has a simple structure and is conducive to reducing the volume of the connection position.

[0023] During operation, hot water is introduced into the second flow channel 8, and cold water is introduced into the first flow channel 7 and the third flow channel 9, so that the temperature in the second flow channel 8 can be quickly reduced. Of course, when heating up, cold water can also be introduced into the second flow channel 8, and hot water can be introduced into the first flow channel 7 and the third flow channel 9, so that the temperature in the second flow channel 8 can be quickly increased. Through the design of this solution, the heat exchange efficiency can be greatly improved in the limited space of the plate shell, and high heat exchange efficiency can be achieved without a large volume, which is conducive to reducing the volume of the heat exchanger.

[0024] It should be understood that the above are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0025] The above description of the drawings used in the implementation manner only shows certain embodiments of the utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

Claims

1. A three-channel heat exchanger, comprising a shell, characterized in that: It also includes a first sleeve, a second sleeve and a third sleeve arranged in the shell, wherein the second sleeve is sleeved in the first sleeve and a gap is formed between the second sleeve and the first sleeve to form a first flow channel, the third sleeve is sleeved in the second sleeve and a gap is formed between the second sleeve and the second sleeve to form a second flow channel, a third flow channel is formed inside the third sleeve, and the second flow channel is suitable for connecting water with a temperature different from that of the first flow channel and the third flow channel to facilitate heat exchange between adjacent flow channels.

2. The three-channel heat exchanger according to claim 1, characterized in that: The water flow direction of the second flow channel is opposite to the water flow directions of the first flow channel and the third flow channel, and the water flow directions of the first flow channel and the third flow channel are the same.

3. The three-channel heat exchanger according to claim 1, characterized in that: The shell includes a first flow channel water inlet, a first flow channel water outlet, a second flow channel water inlet, a second flow channel water outlet, a third flow channel water inlet, and a third flow channel water outlet, and the first flow channel water inlet, the second flow channel water outlet and the third flow channel water inlet are arranged at the same end, and the first flow channel water outlet, the second flow channel water inlet and the third flow channel water outlet are arranged at the same other end.

4. The three-channel heat exchanger according to claim 1, characterized in that: The housing comprises an upper cover and a bottom cover which are connected to each other. A sealing member is arranged on the bottom cover. The first sleeve, the second sleeve and the third sleeve are connected to the sealing member to achieve sealing between the sleeves.

5. The three-channel heat exchanger according to claim 4, characterized in that: The first sleeve is connected end to end at the end through multiple sections of first connecting pipes to form a circuitous first flow channel, the second sleeve is connected end to end at the end through multiple sections of second connecting pipes to form a circuitous second flow channel, and the third sleeve is connected end to end at the end through multiple sections of third connecting pipes to form a circuitous third flow channel.

6. The three-channel heat exchanger according to claim 5, characterized in that: A first connecting flow channel suitable for connecting one end of an adjacent first connecting tube, a second connecting flow channel suitable for connecting one end of an adjacent second connecting tube, and a third connecting flow channel suitable for connecting one end of an adjacent third connecting tube are alternately formed at both ends of the bottom cover to respectively form the circuitous first flow channel, second flow channel and third flow channel.

7. The three-channel heat exchanger according to claim 6, characterized in that: The first connecting flow channel, the second connecting flow channel, and the third connecting flow channel are arranged sequentially from the inside to the outside.

8. A water outlet device, characterized in that: A three-channel heat exchanger comprising any one of claims 1-7.

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