A grid heat exchanger and water purifier thereof

Abstract

The utility model discloses a kind of grid heat exchanger and water purifier thereof, including main component, several heat exchange inner tubes, several U-shaped joints and two end plate sealing elements;Main component includes upper end plate, lower end plate and the several connecting pipes being set between upper end plate and lower end plate, and the upper end between and the lower end between of adjacent connecting pipe are sequentially alternately provided with intercommunicating component to form first heat exchange passage by the intercommunication of several connecting pipes;Several heat exchange inner tubes are correspondingly inserted in several connecting pipes, and several U-shaped joints are used to form second heat exchange passage by the intercommunication of several heat exchange inner tubes;Two end plate sealing elements are used to block the gap between mounting hole and heat exchange inner tube.The heat exchanger of the utility model effectively increases heat exchange time, increases heat exchange area, to improve heat exchange efficiency;Corresponding water purifier simultaneously, by heat exchanger preheating, secondary heating of hot type heating body, to greatly improve hot water efficiency, ensure drinking water health.

Description

Technical Field

[0001] This utility model relates to the field of drinking water equipment technology, and in particular to a grid heat exchanger and its water purifier. Background Technology

[0002] With the improvement of living standards, people have put forward new requirements for the quality and use of drinking water. Water purification equipment that can purify and filter water and directly heat it for drinking has been widely used. To meet people's need for hot water at any time, water purification equipment generally uses three solutions: The first is to use an instant heating element. This method has a slow water flow rate, resulting in long waiting times for users to get water and a poor user experience. The second is to use a hot water tank to heat and maintain the water at a certain temperature. When hot water is taken out, it is taken directly from the hot water tank. In this method, the water is repeatedly heated, forming repeatedly boiled water, which may be detrimental to health. The third is a combined treatment method with a hot water tank and an instant heating element. The principle is to heat the water twice to increase the flow rate. Because a hot water tank is also included, the drinking water is repeatedly heated, forming repeatedly boiled water, which is also detrimental to health. Utility Model Content

[0003] This invention aims to overcome the shortcomings of the prior art by providing a grid-type heat exchanger with a simple and reasonable structure. Both the first and second heat exchange channels are serpentine structures, effectively extending the fluid flow path, increasing heat exchange time, and improving heat exchange efficiency. The second heat exchange channel is located within the first heat exchange channel, effectively increasing the heat exchange area and improving heat exchange efficiency. Simultaneously, a water purifier incorporating the aforementioned grid-type heat exchanger is also provided. This purifier utilizes the heat exchanger to exchange heat with hot water in a hot water tank for preheating the outlet water, followed by secondary heating via an instant heating element. This improves heating efficiency, shortens heating time, increases the hot water outlet flow rate, and ensures that the heated drinking water is fresh, avoiding repeated heating and guaranteeing drinking water health.

[0004] To achieve the above objectives, this utility model provides a grid-type heat exchanger, comprising a main body component, several heat exchange inner tubes, several U-shaped joints, and two end plate seals;

[0005] The main component includes an upper end plate and a lower end plate arranged opposite to each other, and a plurality of connecting pipes disposed between the upper end plate and the lower end plate. The upper end plate is provided with a plurality of upper mounting holes spaced apart along its extension direction. The lower end plate is provided with lower mounting holes corresponding to the upper mounting holes. The two ends of the plurality of connecting pipes are inserted into the corresponding upper and lower mounting holes. The upper ends and lower ends of adjacent connecting pipes are alternately provided with connecting members to connect the plurality of connecting pipes to form a serpentine first heat exchange channel. The first heat exchange channel is provided with a liquid inlet and a liquid outlet at its head and tail ends, respectively.

[0006] The number of heat exchange inner tubes is the same as the number of connecting tubes. The heat exchange inner tubes are inserted into several connecting tubes of the main body in a one-to-one correspondence, and both ends of the heat exchange inner tubes protrude outside the ends of the connecting tubes. Several U-shaped joints are alternately sleeved between the upper ends and the lower ends of adjacent heat exchange inner tubes to connect the heat exchange inner tubes to form a serpentine second heat exchange channel. The opening at the first end and the opening at the last end of the second heat exchange channel are used as the liquid inlet and outlet, respectively.

[0007] Both end plate seals are provided with through holes for the ends of several heat exchange inner tubes to pass through. The two end plate seals are respectively covered on the upper and lower end plates to seal the gap between the mounting holes and the heat exchange inner tubes.

[0008] A sealing ring is further provided in the gap between the upper mounting hole and the heat exchange inner tube and / or the gap between the lower mounting hole and the heat exchange inner tube.

[0009] A further feature is provided: a temperature probe is provided on the liquid inlet and / or liquid outlet.

[0010] Further configuration: the main component is a plastic part;

[0011] And / or the end plate seal is a plastic part;

[0012] And / or the U-shaped connector is a silicone component;

[0013] And / or the heat exchange inner tube is a stainless steel tube.

[0014] The fluid in the first heat exchange channel and the fluid in the second heat exchange channel are configured to exchange heat in opposite directions.

[0015] This utility model also provides a water purifier, including a water purification module, a water outlet faucet, a hot water tank, a regulating pump, an instant heating element, and the above-mentioned grid heat exchanger.

[0016] The water purification module's inlet is connected to a water source, and its outlet is divided into two paths: one path is connected to a water tap, and the other path is connected to the liquid inlet of the second heat exchange channel of the grid heat exchanger, with the regulating pump installed on the pipeline between the two paths.

[0017] The outlet of the second heat exchange channel of the grid heat exchanger is connected to the instant heating element and the water outlet in sequence through pipelines.

[0018] The hot water tank is filled with hot water, and a hot water circulation pump is used to circulate the hot water in the hot water tank with the first heat exchange channel of the grid heat exchanger.

[0019] The following configuration is further provided: a temperature probe is provided on the liquid outlet, and a heating element is provided at the bottom of the hot water tank;

[0020] When the temperature detected by the temperature probe is lower than the first set value, the heating component operates to heat the water in the hot water tank.

[0021] Further configuration includes: a pipeline between the instant heating element and the water faucet, and a pipeline between the water purification module and the regulating pump, with a circulating heating pipeline between the two pipelines, and a circulating solenoid valve installed on the circulating heating pipeline;

[0022] A temperature probe is installed on the liquid outlet. When the temperature detected by the temperature probe is lower than the first set value, the circulation solenoid valve is opened, and the water in the second heat exchange channel of the grid heat exchanger heats the water in the first heat exchange channel in the reverse direction.

[0023] Further configuration: the preheating water tank is provided with a water inlet, and a water level switch is installed inside the preheating water tank;

[0024] A water supply pipeline is constructed between the water purification module and the regulating pump and the water supply port of the hot water tank, and a water supply solenoid valve is installed on the water supply pipeline.

[0025] Compared with existing technologies, this utility model has a simple and reasonable structure. Both the first and second heat exchange channels are serpentine structures, which effectively extends the fluid flow path, increases the heat exchange time, and improves the heat exchange efficiency. The second heat exchange channel is set inside the first heat exchange channel, which effectively increases the heat exchange area and improves the heat exchange efficiency. At the same time, it also provides a water purifier with the above-mentioned grid-type heat exchanger, which uses the heat exchanger to exchange heat with the hot water in the hot water tank to preheat the outlet water, and then uses an instant heating element for secondary heating, thereby improving heating efficiency, shortening heating time, increasing the hot water outlet flow rate, and ensuring that the heated drinking water is fresh, avoiding repeated heating and ensuring drinking water health. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of a grid-type heat exchanger according to this utility model;

[0027] Figure 2 This is a schematic diagram of the separation structure of a grid heat exchanger;

[0028] Figure 3 This is a cross-sectional structural diagram of a grid heat exchanger;

[0029] Figure 4 It is a three-dimensional structural diagram of the main components;

[0030] Figure 5 This is a schematic diagram of the water circuit connection structure of a water purifier. Figure 1 ;

[0031] Figure 6 This is a schematic diagram of the water circuit connection structure of a water purifier. Figure 2 .

[0032] The following reference numerals are marked on the accompanying drawings:

[0033] 100. Grille heat exchanger; 10. Main component; 11. Upper end plate; 111. Upper mounting hole; 12. Lower end plate; 13. Connecting pipe; 14. Connecting component; 15. Liquid inlet; 16. Liquid outlet; 17. Temperature probe; 20. Heat exchange inner tube; 21. Liquid inlet; 22. Liquid outlet; 30. End plate seal; 31. Through hole; 40. U-shaped connector;

[0034] 200. Water purification module; 300. Hot water tank; 310. Heating component; 320. Water level switch; 330. Water inlet; 400. Regulating pump; 500. Instantaneous heating element; 600. Water tap; 610. First check valve; 700. Hot water circulation pump; 800. Circulation heating pipeline; 810. Circulation solenoid valve; 820. Second check valve; 900. Water inlet pipeline; 910. Water inlet solenoid valve;

[0035] H1, first heat exchange channel; H2, second heat exchange channel. Detailed Implementation

[0036] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0037] This utility model relates to a grid-type heat exchanger 100. Figure 1 and Figure 2As shown, it includes a main component 10, several heat exchange inner tubes 20, several U-shaped joints 40 and two end plate seals 30, wherein the main component 10 is preferably made of plastic, the heat exchange inner tubes 20 are preferably made of stainless steel, the U-shaped joints 40 are preferably made of silicone, and the end plate seals 30 are made of plastic.

[0038] In this embodiment, as Figure 2 , Figure 3 and Figure 4 As shown, the main component 10 includes an upper end plate 11 and a lower end plate 12 arranged opposite to each other, and a plurality of connecting pipes 13 disposed between the upper end plate 11 and the lower end plate 12. Specifically, the upper end plate 11 is provided with a plurality of upper mounting holes 111 evenly spaced along its extension direction, and the lower end plate 12 is provided with a plurality of lower mounting holes corresponding one-to-one with the mounting holes. The two ends of the plurality of connecting pipes 13 are fixedly inserted into the corresponding upper and lower mounting holes in a one-to-one manner. At the same time, the upper ends of adjacent connecting pipes 13 are located between the upper ends of the inner side of the upper end plate 11. The lower end plate 12 and the lower end of the inner side are alternately provided with connecting members 14 to connect the connecting pipes 13 to form a serpentine first heat exchange channel H1. The first heat exchange channel H1 is provided with a liquid inlet 15 and a liquid outlet 16 at its first end (the inlet end of the first connecting pipe 13) and its tail end (the outlet end of the last connecting pipe 13), respectively. The number of connecting inner tubes is the same as the number of connecting pipes 13. The connecting inner tubes are inserted into the connecting pipes 13 in a one-to-one correspondence and both ends of the connecting inner tubes protrude. Outside the port of the connecting pipe 13, several U-shaped connectors 40 are alternately fitted between the upper and lower ends of adjacent heat exchange inner tubes 20 to connect the heat exchange inner tubes 20 and form a serpentine second heat exchange channel H2. The inlet at the beginning and the outlet at the end of the second heat exchange channel H2 are used as the liquid inlet 21 and the liquid outlet 22, respectively. In this way, the second heat exchange channel H2 is immersed in the first heat exchange channel H1, effectively increasing the heat exchange area and improving the heat exchange effect. At the same time, the first heat exchange channel H1 and the second heat exchange channel H1 are connected. All channels H2 have a serpentine structure, which effectively extends the flow path of the fluid, increases the heat exchange time, and further improves the heat exchange efficiency. Both end plate seals 30 are provided with through holes 31 for the ends of several heat exchange inner tubes 20 to pass through. The two end plate seals 30 are respectively covered on the upper and lower end plates 12 to seal the gap between the mounting hole and the heat exchange inner tube 20. Preferably, a sealing ring is embedded in the gap between the upper and lower mounting holes and the heat exchange inner tube 20, which further ensures the sealing effect of the end plate seals 30.

[0039] In this embodiment, temperature probes 17 are provided on the inlet port 15 and the outlet port 16. The temperature probes 17 are used to detect the temperature of the fluid flowing through them. In other embodiments, temperature probes 17 can also be provided on the inlet port 15 or the outlet port 16.

[0040] In this embodiment, the fluid in the first heat exchange channel H1 and the fluid in the second heat exchange channel H2 exchange heat in opposite directions, which can effectively improve the heat exchange effect.

[0041] This utility model also provides a water purifier, the implementation structure of which is as follows. Figure 5 As shown, the system includes a water purification module 200, a water tap 600, a hot water tank 300, a regulating pump 400, an instant heating element 500, and the aforementioned grille heat exchanger 100. The inlet of the water purification module 200 is connected to a water source for water purification, and its outlet is divided into two paths: one path is connected to the water tap 600, and preferably, a first one-way valve 610 for preventing backflow is installed on the pipeline between the two paths; the other path is connected to the liquid inlet 21 of the second heat exchange channel H2 of the grille heat exchanger 100, and the regulating pump 400 is installed on the pipeline between the two paths. The liquid outlet 22 of the second heat exchange channel H2 of the grille heat exchanger 100 is connected to the instant heating element 500 and the water tap in sequence through pipelines. 600 is connected; the hot water tank 300 contains hot water with the temperature maintained within a set range (preferably 80℃-87℃), and the hot water circulation pump 700 causes the hot water in the hot water tank 300 to circulate between the first heat exchange channel H1 of the grid heat exchanger 100; in this way, the hot water in the first heat exchange channel H1 exchanges heat with the cold water in the second heat exchange channel H2 to achieve preheating of the cold water, and then the instant heating element 500 reheats the preheated water, which improves the heating efficiency, shortens the heating time, increases the hot water outlet flow rate, and at the same time ensures that the heated drinking water is fresh, avoids repeated heating, and ensures drinking water health.

[0042] In this embodiment, as Figure 5 As shown, the hot water tank 300 is equipped with a water inlet 330 and a vent. A water level switch 320 is installed inside the hot water tank 300. A water supply pipeline 900 is constructed between the pipeline between the water purification module 200 and the regulating pump 400 and the water inlet 330 of the hot water tank 300. A water supply solenoid valve 910 is installed on the water supply pipeline 900. When the water level in the hot water tank 300 is lower than the first detection position of the water level switch 320, the water supply solenoid valve 910 opens to replenish water to the hot water tank 300. At the same time, when the water level in the hot water tank 300 reaches the second detection position of the water level switch 320, the water supply solenoid valve 910 closes, and the water supply tank is replenished.

[0043] In this embodiment, as Figure 5As shown, a first pipeline connects the instant heating element 500 and the water outlet faucet 600, and a second pipeline connects the water purification module 200 and the regulating pump 400. A circulating heating pipeline 800 is provided between the first and second pipelines. A circulating solenoid valve 810 and a second check valve 820 are installed on the circulating heating pipeline 800. A temperature probe 17 is installed on the liquid outlet 16. When the temperature detected by the temperature probe 17 is lower than a first set value, the circulating solenoid valve 810 opens, and the first... The water in the second heat exchange channel H2 heats the water in the first heat exchange channel H1 in reverse to heat the water temperature in the hot water tank 300 to a set range. That is, the water in the second heat exchange channel H2 is heated into hot water by the instant heating element 500 and exchanges heat with the cooled water in the first heat exchange channel H1 to heat the water temperature in the first heat exchange channel H1 to a set range. Thus, in this embodiment, the instant heating element 500 can not only heat the water coming out of the faucet 600, but also heat the water in the hot water tank 300.

[0044] This utility model also provides a water purifier according to embodiment two, which differs from the water purifier according to embodiment one in the method of heating the water in the hot water tank 300; the water purifier according to embodiment two is as follows: Figure 6 As shown, it does not have a circulating heating pipe 800. The bottom of its hot water tank 300 is equipped with a heating component 310. A temperature probe 17 is installed on the liquid outlet 16. When the temperature detected by the temperature probe 17 is lower than the first set value, the heating component 310 works until the water temperature in the hot water tank 300 is heated to the set range.

[0045] Compared with existing technologies, this utility model has a simple and reasonable structure. Both the first and second heat exchange channels are serpentine structures, which effectively extends the fluid flow path, increases the heat exchange time, and improves the heat exchange efficiency. The second heat exchange channel is set inside the first heat exchange channel, which effectively increases the heat exchange area and improves the heat exchange efficiency. At the same time, it also provides a water purifier with the above-mentioned grid-type heat exchanger, which uses the heat exchanger to exchange heat with the hot water in the hot water tank to preheat the outlet water, and then uses an instant heating element for secondary heating, thereby improving heating efficiency, shortening heating time, increasing the hot water outlet flow rate, and ensuring that the heated drinking water is fresh, avoiding repeated heating and ensuring drinking water health.

[0046] The above-disclosed embodiments are merely examples of the present utility model. However, the present utility model is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A grid-type heat exchanger, characterized in that, It includes the main components, several heat exchange inner tubes, several U-shaped joints, and two end plate seals; The main component includes an upper end plate and a lower end plate arranged opposite to each other, and a plurality of connecting pipes disposed between the upper end plate and the lower end plate. The upper end plate is provided with a plurality of upper mounting holes spaced apart along its extension direction. The lower end plate is provided with lower mounting holes corresponding to the upper mounting holes. The two ends of the plurality of connecting pipes are inserted into the corresponding upper and lower mounting holes. The upper ends and lower ends of adjacent connecting pipes are alternately provided with connecting members to connect the plurality of connecting pipes to form a serpentine first heat exchange channel. The first heat exchange channel is provided with a liquid inlet and a liquid outlet at its head and tail ends, respectively. The number of heat exchange inner tubes is the same as the number of connecting tubes. The heat exchange inner tubes are inserted into several connecting tubes of the main body in a one-to-one correspondence, and both ends of the heat exchange inner tubes protrude outside the ends of the connecting tubes. Several U-shaped joints are alternately sleeved between the upper ends and the lower ends of adjacent heat exchange inner tubes to connect the heat exchange inner tubes to form a serpentine second heat exchange channel. The opening at the first end and the opening at the last end of the second heat exchange channel are used as the liquid inlet and outlet, respectively. Both end plate seals are provided with through holes for the ends of several heat exchange inner tubes to pass through. The two end plate seals are respectively covered on the upper and lower end plates to seal the gap between the mounting holes and the heat exchange inner tubes.

2. A grid-type heat exchanger according to claim 1, characterized in that, A sealing ring is embedded in the gap between the upper mounting hole and the heat exchange inner tube and / or the gap between the lower mounting hole and the heat exchange inner tube.

3. A grid-type heat exchanger according to claim 1, characterized in that, Temperature probes are installed on the liquid inlet and / or liquid outlet.

4. A grid-type heat exchanger according to claim 1, characterized in that, The main component is made of plastic. And / or the end plate seal is a plastic part; And / or the U-shaped connector is a silicone component; And / or the heat exchange inner tube is a stainless steel tube.

5. A grid-type heat exchanger according to claim 1, characterized in that, The fluid in the first heat exchange channel and the fluid in the second heat exchange channel exchange heat in opposite directions.

6. A water purifier, characterized in that, It includes a water purification module, a water outlet faucet, a hot water tank, a regulating pump, an instant heating element, and a grid heat exchanger as described in any one of claims 1-5; The water purification module's inlet is connected to a water source, and its outlet is divided into two paths: one path is connected to a water tap, and the other path is connected to the liquid inlet of the second heat exchange channel of the grid heat exchanger, with the regulating pump installed on the pipeline between the two paths. The outlet of the second heat exchange channel of the grid heat exchanger is connected to the instant heating element and the water outlet in sequence through pipelines. The hot water tank is filled with hot water, and a hot water circulation pump is used to circulate the hot water in the hot water tank with the first heat exchange channel of the grid heat exchanger.

7. A water purifier according to claim 6, characterized in that, A temperature probe is installed on the liquid outlet, and a heating element is installed at the bottom of the hot water tank; When the temperature detected by the temperature probe is lower than the first set value, the heating component operates to heat the water in the hot water tank.

8. A water purifier according to claim 6, characterized in that, The pipeline between the instant heating element and the water faucet, and the pipeline between the water purification module and the regulating pump, are connected by a circulating heating pipeline, and a circulating solenoid valve is installed on the circulating heating pipeline. A temperature probe is installed on the liquid outlet. When the temperature detected by the temperature probe is lower than the first set value, the circulation solenoid valve is opened, and the water in the second heat exchange channel of the grid heat exchanger heats the water in the first heat exchange channel in the reverse direction.

9. A water purifier according to claim 6, characterized in that, The hot water tank is equipped with a water inlet, and a water level switch is installed inside the hot water tank; A water supply pipeline is constructed between the water purification module and the regulating pump and the water supply port of the hot water tank, and a water supply solenoid valve is installed on the water supply pipeline.

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