Combined heat exchanger and water outlet device

Abstract

The utility model provides a combined heat exchanger and a water outlet device, and relates to the technical field of heat exchange equipment. Comprising an upper water inlet and outlet cover, a lower water inlet and outlet cover and at least two stacked flow channel assemblies, first flow channels and second flow channels used for achieving heat exchange are formed in the flow channel assemblies, and the first flow channels of the two flow channel assemblies are connected in series to form a first main flow channel; meanwhile, the second flow channels of the two flow channel assemblies are connected in series to form a second main flow channel, and water inlets and water outlets of the first main flow channel and the second main flow channel are connected to the upper water inlet and outlet cover and the lower water inlet and outlet cover. According to the scheme, the heat exchange efficiency can be improved, and the size is convenient to replace, disassemble and repair.

Description

Technical Field

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

[0002] Currently, the countertop water purifiers on the market use a heat exchanger to cool down boiling water to obtain warm boiled water. The existing heat exchanger structure is relatively complex, and the unreasonable arrangement of the cooling water channel increases the occupied space and makes the water channel volume larger. At the same time, in order to ensure the heat exchange effect of the heat exchanger, the heat exchange area needs to be increased, which further makes the heat exchanger larger in volume. On the other hand, the existing flow channel is generally integrated, and when part of it is damaged, it needs to be completely replaced and cannot be disassembled and repaired. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a combined heat exchanger to solve the problems of low heat exchange efficiency and difficulty in replacing and repairing parts of the existing heat exchanger.

[0004] The utility model adopts the following scheme: the application provides a combined heat exchanger, including an upper water inlet and outlet cover, a lower water inlet and outlet cover and at least two stacked flow channel assemblies, wherein a first flow channel and a second flow channel for realizing heat exchange are formed in the flow channel assembly, the first flow channels of the two flow channel assemblies are connected in series to form a first total flow channel, and at the same time, the second flow channels of the two flow channel assemblies are connected in series to form a second total flow channel, and the water inlets and outlets of the first total flow channel and the second total flow channel are connected to the upper water inlet and outlet cover and the lower water inlet and outlet cover.

[0005] Furthermore, the flow channel assembly includes a bracket and a first sleeve and a second sleeve arranged in the bracket, the second sleeve is sleeved in the first sleeve and a gap is formed between the second sleeve and the first sleeve to form the first flow channel, the second flow channel is formed inside the second sleeve, and the first flow channel and the second flow channel are suitable for heat exchange through the tube body of the second sleeve.

[0006] Furthermore, a sealing member is provided in the bracket, and the first sleeve and the second sleeve are connected to the sealing member.

[0007] Furthermore, the first sleeve includes a plurality of first connecting tubes, and the ends of adjacent first connecting tubes are connected end to end to form a circuitous first flow channel. The second sleeve includes a plurality of second connecting tubes, and the ends of adjacent second connecting tubes are connected end to end to form a circuitous second flow channel.

[0008] Furthermore, first connecting channels suitable for connecting adjacent first connecting pipe ends to form the first circuitous channel and second connecting channels suitable for connecting adjacent second connecting pipe ends to form the second circuitous channel are alternately formed at both ends of the bracket.

[0009] Furthermore, a first connecting port and a second connecting port are provided in the bracket of the upper flow channel assembly, the first connecting port is used to connect the first flow channels of the upper and lower flow channel assemblies, and the second connecting port is used to connect the second flow channels of the upper and lower flow channel assemblies.

[0010] Furthermore, the first sleeve and the second sleeve are metal tubes.

[0011] Furthermore, the upper water inlet and outlet cover is provided with a first flow channel water inlet connected to the first main flow channel, and a second flow channel water outlet connected to the second main flow channel, and the lower water inlet and outlet cover is provided with the first flow channel water outlet connected to the first main flow channel and the second flow channel water inlet connected to the second main flow channel, so that the water flow directions in the first main flow channel and the second main flow channel are opposite.

[0012] Furthermore, a plurality of stacked flow channel assemblies are arranged between the upper water inlet and outlet cover and the lower water inlet and outlet cover, and the first flow channels between upper and lower adjacent flow channel assemblies are interconnected, and the second flow channels between upper and lower adjacent flow channel assemblies are interconnected.

[0013] The utility model also provides a water outlet device, comprising any one of the combined heat exchangers described above.

[0014] Beneficial effects:

[0015] The utility model scheme greatly increases the flow channel length in the flow channel assembly by setting a stacked flow channel assembly, thereby increasing the effective length and area of ​​heat exchange, which is beneficial to improving the heat exchange efficiency. The user can set multiple or single flow channel assemblies according to the needs of heat exchange, and it is convenient to replace the flow channel assembly when it is damaged, thereby increasing the service life of the water outlet device with the heat exchanger. In addition, by setting the first sleeve and the second sleeve that are mutually sleeved, heat exchange can be achieved through the tube body of the second sleeve that is sleeved inside. The second sleeve is provided with a metal tube with a high heat transfer coefficient, which can effectively improve the heat exchange efficiency. The heat exchange is carried out in the form of a sleeve, so that the water channel flows inside the sleeve, the water channel layout is optimized, and the surface area of ​​the second sleeve is fully contacted, which greatly increases the surface area used for heat exchange, thereby achieving a higher heat exchange efficiency with a smaller volume, which is beneficial to reducing the volume of the entire heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a combined heat exchanger according to an embodiment of the utility model;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of a combined heat exchanger according to an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the exploded structure of a combined heat exchanger according to an embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the exploded structure of a flow channel group of a combined heat exchanger according to an embodiment of the utility model;

[0020] Figure markings: upper water inlet and outlet cover 1, first flow channel water inlet 11, second flow channel water outlet 12, lower water inlet and outlet cover 2, first flow channel water outlet 21, second flow channel water inlet 22, flow channel assembly 3, bracket 31, first connecting port 311, second connecting port 312, seal 32, first connecting flow channel 321, second connecting flow channel 322, first sleeve 33, second sleeve 34, first flow channel 35, second flow channel 36. DETAILED DESCRIPTION

[0021] Combination Figures 1 to 4 As shown, this embodiment provides a water outlet device, including a combined heat exchanger. The water outlet device can be a device such as a water dispenser, and the combined heat exchanger is used to cool the hot water of the water dispenser to form warm water outflow. The combined heat exchanger includes an upper water inlet and outlet cover 1, a lower water inlet and outlet cover 2, and at least two stacked flow channel components 3, wherein the flow channel component 3 is formed with a first flow channel 35 and a second flow channel 36 for realizing heat exchange, and the first flow channels 35 of the two flow channel components 3 are connected in series to form a first total flow channel, and the second flow channels 36 of the two flow channel components 3 are connected in series to form a second total flow channel, and the water inlet and outlet of the first total flow channel and the second total flow channel are connected to the upper water inlet and outlet cover 1 and the lower water inlet and outlet cover 2. Here, in other embodiments, a plurality of stacked flow channel components 3 can be arranged between the upper water inlet and outlet cover 1 and the lower water inlet and outlet cover 2, and the first flow channels 35 between the upper and lower adjacent flow channel components 3 are connected to each other, and the second flow channels 36 between the upper and lower adjacent flow channel components 3 are connected to each other. The number of flow channel components 3 can be adjusted according to user needs to increase or decrease the length of the flow channel. By setting a double-layer flow channel component 3 connection mode, the length of the flow channel used for heat exchange is increased, and the heat exchange efficiency is effectively improved.

[0022] In this embodiment, the upper water inlet and outlet cover 1 is provided with a first flow channel water inlet 11 connected to the first main flow channel, and a second flow channel water outlet 12 connected to the second main flow channel, and the lower water inlet and outlet cover 2 is provided with a first flow channel water outlet 21 connected to the first main flow channel and a second flow channel water inlet 22 connected to the second main flow channel, so that the water flow directions in the first main flow channel and the second main flow channel are opposite, and the heat exchange efficiency can be improved by having the cold and hot water flow directions in opposite directions.

[0023] In order to clearly explain the flow channel assembly 3, a structure of the flow channel assembly 3 is provided here, including but not limited to this. In this embodiment, the flow channel assembly 3 includes a bracket 31 and a first sleeve 33 and a second sleeve 34 arranged in the bracket 31. The second sleeve 34 is sleeved in the first sleeve 33 and a gap is formed between the first sleeve 33 to form the first flow channel 35. The second sleeve 34 has a second flow channel 36 formed inside. The first flow channel 35 and the second flow channel 36 are suitable for heat exchange through the tube body of the second sleeve 34. The first sleeve 33 includes a plurality of first connecting tubes, and the ends of adjacent first connecting tubes are connected end to end to form a circuitous first flow channel 35. The second sleeve 34 includes a plurality of second connecting tubes, and the ends of adjacent second connecting tubes are connected end to end to form a circuitous second flow channel 36. The first sleeve 33 and the second sleeve 34 are metal tubes, such as copper tubes, etc., and the heat exchange efficiency is improved by sleeves with high heat transfer coefficients. The bracket 31 is provided with a seal 32, and the first sleeve 33 and the second sleeve 34 are connected to the seal 32 to ensure that the first sleeve 33 and the second sleeve 34 are not connected to each other. At both ends of the bracket 31, first connecting channels 321 suitable for connecting the ends of adjacent first connecting pipes to form the first bypassing channel 35 and second connecting channels 322 suitable for connecting the ends of adjacent second connecting pipes to form the second bypassing channel 36 are staggered. Through this embodiment, the first channel and the second channel can both use metal pipes, which overcomes the problem that the existing integrally formed S-shaped first channel and second channel cannot all use metal pipes because they cannot be sleeved and installed.

[0024] In this embodiment, the bracket 31 of the flow channel assembly 3 of the upper layer is provided with a first communication port 311 and a second communication port 312, wherein the first communication port 311 is used to connect the first flow channels 35 of the upper and lower flow channel assemblies 3, and the second communication port 312 is used to connect the second flow channels 36 of the upper and lower flow channel assemblies 3. The first communication port 311 and the second communication port 312 can be used to cooperate with different flow channel assemblies 3, which is convenient for maintenance and replacement.

[0025] Combination Figures 2 to 4As shown, the diameter of the first connecting tube is larger than that of the second connecting tube, so that a gap is formed between the first connecting tube and the second connecting tube to form the first flow channel 35, and a second flow channel 36 is formed separately inside the second connecting tube. Here, the second flow channel 36 is arranged in the first flow channel 35. When hot water is passed into the second flow channel 36, cold water can be passed into the first flow channel 35, so that the second flow channel 36 is surrounded by cold water, which greatly increases the heat exchange area, thereby improving the heat exchange efficiency.

[0026] Combination Figure 3 to Figure 4 As shown, the sealing member 32 can be set to a rubber material, which is used to fix the first connecting pipe and the second connecting pipe. The first connecting flow channel 321 suitable for connecting one end of the adjacent first connecting pipe and the second connecting flow channel 322 suitable for connecting one end of the adjacent second connecting pipe are staggered at the two ends of the bracket 31 to form the first flow channel 35 and the second flow channel 36 respectively. That is, the adjacent first connecting pipes are connected through the first connecting flow channel 321, and the first connecting flow channels 321 at both ends are staggered. Taking two 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 321, and the other end of the second connecting pipe is connected to the same end of the other second connecting pipe through another first connecting flow channel 321 on the opposite side, thereby forming a first flow channel 35 adjacent to each other, and the second flow channel 36 is similarly arranged. The first connecting pipe is shorter than the second connecting pipe, so that the first connecting flow channel 321 and the second connecting flow channel 322 can be arranged in sequence from the inside to the outside, optimizing the space layout in the shell and facilitating installation. Here, connecting pipes of different lengths can be used to connect connecting pipes of different lengths at different positions, which has a simple structure and is conducive to reducing the space at the connection position.

[0027] During operation, hot water is introduced into the second main flow channel, and cold water is introduced into the first main flow channel, so that the second main flow channel can be quickly cooled down. Of course, when heating up, cold water can be introduced into the second main flow channel, and hot water can be introduced into the first main flow channel, so that the second main flow channel can be quickly heated up. Through this design, 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.

[0028] 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.

[0029] 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 combined heat exchanger, characterized in that: It includes an upper water inlet and outlet cover, a lower water inlet and outlet cover and at least two stacked flow channel assemblies, wherein a first flow channel and a second flow channel for realizing heat exchange are formed in the flow channel assembly, the first flow channels of the two flow channel assemblies are connected in series to form a first total flow channel, and the second flow channels of the two flow channel assemblies are connected in series to form a second total flow channel, and the water inlets and outlets of the first total flow channel and the second total flow channel are connected to the upper water inlet and outlet cover and the lower water inlet and outlet cover.

2. The combined heat exchanger according to claim 1, characterized in that: The flow channel assembly includes a bracket and a first sleeve and a second sleeve arranged in the bracket. The second sleeve is sleeved in the first sleeve and a gap is formed between the second sleeve and the first sleeve to form the first flow channel. The second flow channel is formed inside the second sleeve. The first flow channel and the second flow channel are suitable for heat exchange through the tube body of the second sleeve.

3. The combined heat exchanger according to claim 2, characterized in that: A sealing member is arranged in the bracket, and the first sleeve and the second sleeve are connected to the sealing member.

4. The combined heat exchanger according to claim 3, characterized in that: The first sleeve includes a plurality of first connecting tubes, and the ends of adjacent first connecting tubes are connected end to end to form a circuitous first flow channel. The second sleeve includes a plurality of second connecting tubes, and the ends of adjacent second connecting tubes are connected end to end to form a circuitous second flow channel.

5. The combined heat exchanger according to claim 4, characterized in that: First connecting channels adapted to connect adjacent first connecting pipe ends to form the first circuitous channel, and second connecting channels adapted to connect adjacent second connecting pipe ends to form the second circuitous channel are alternately formed at both ends of the bracket.

6. The combined heat exchanger according to claim 2, characterized in that: A first connecting port and a second connecting port are provided in the bracket of the flow channel assembly of the upper layer. The first connecting port is used to connect the first flow channels of the upper and lower flow channel assemblies, and the second connecting port is used to connect the second flow channels of the upper and lower flow channel assemblies.

7. The combined heat exchanger according to claim 2, characterized in that: The first sleeve and the second sleeve are metal pipes.

8. The combined heat exchanger according to claim 1, characterized in that: The upper water inlet and outlet cover is provided with a first flow channel water inlet connected to the first main flow channel, and a second flow channel water outlet connected to the second main flow channel, and the lower water inlet and outlet cover is provided with the first flow channel water outlet connected to the first main flow channel and a second flow channel water inlet connected to the second main flow channel, so that the water flow directions in the first main flow channel and the second main flow channel are opposite.

9. The combined heat exchanger according to claim 1, characterized in that: A plurality of stacked flow channel components are arranged between the upper water inlet and outlet cover and the lower water inlet and outlet cover, and the first flow channels between upper and lower adjacent flow channel components are interconnected, while the second flow channels between upper and lower adjacent flow channel components are interconnected.

10. A water outlet device, characterized in that: A combined heat exchanger comprising any one of claims 1-9.

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