A heat exchange system with a hot water tank

Abstract

This utility model discloses a heat exchange system with a hot water tank, including a heat exchanger, a hot water tank, and a circulating pump. The heat exchanger has a first medium channel, a second medium channel, a first inlet, a first outlet, a second inlet, and a second outlet. A heating element is installed on the bottom wall of the hot water tank. Several layers of partitions are arranged inside the hot water tank to divide its internal cavity into multiple water chambers. The hot water tank has an outlet and an inlet. The outlet of the hot water tank is connected to the second inlet of the heat exchanger, and the circulating pump is installed on the pipeline between the two. The inlet of the hot water tank is connected to the second outlet of the heat exchanger. Each partition has a water-passing structure, and the water-passing structures on adjacent partitions are staggered. The hot water tank of this utility model extends the water flow path and slows down the mixing speed of hot and cold water. At the same time, it can ensure that the outlet water temperature of the hot water tank is relatively constant within a certain period of time, thereby obtaining relatively stable warm water and ensuring a better user experience.

Description

Technical Field

[0001] This utility model relates to the field of drinking water equipment technology, and in particular to a heat exchange system with a hot water tank. 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 needs for hot and warm water at any time, most existing water purification equipment prepares hot water by equipping a hot water tank and uses a heat exchanger to circulate and exchange heat between room temperature water and the hot water in the tank to obtain warm water. However, most existing hot water tanks have a hollow internal structure. When the relatively low-temperature water that comes out after heat exchange is circulated back to the bottom of the hot water tank, this low-temperature water will generate violent convection and mix rapidly with the hot water in the tank. This causes the water temperature in the tank to drop rapidly, which reduces the subsequent heat exchange effect. As a result, the temperature of the obtained warm water changes rapidly, leading to a poor user experience and room for improvement. Utility Model Content

[0003] This invention aims to overcome the shortcomings of the prior art by providing a heat exchange system with a hot water tank. The hot water tank divides its internal cavity into multiple water passage chambers through several layers of partitions, and these chambers are connected by water passage structures staggered on adjacent partitions. This effectively extends the water flow path and slows down the mixing speed of hot and cold water. At the same time, it ensures that the outlet water temperature of the hot water tank remains relatively constant over a period of time, guaranteeing a relatively stable heat exchange efficiency of the heat exchanger and providing relatively stable warm water, thus ensuring a better user experience.

[0004] To achieve the above objectives, this utility model provides a heat exchange system with a hot water tank, including a heat exchanger, a hot water tank, and a circulating pump, wherein the heat exchanger has a first medium channel and a second medium channel, a first inlet and a first outlet communicating with the first medium channel, and a second inlet and a second outlet communicating with the second medium channel; The hot water tank is a barrel-shaped structure closed at both ends. A heating element is installed on the bottom wall of the hot water tank. Several horizontally extending partitions are installed inside the hot water tank to divide its internal cavity into multiple water chambers. The hot water tank is provided with an outlet connected to the uppermost water chamber and an inlet connected to the lowermost water chamber. The outlet of the hot water tank is connected to the second inlet of the heat exchanger, and the circulation pump is installed on the pipeline between the two. The inlet of the hot water tank is connected to the second outlet of the heat exchanger. Each partition is provided with a water passage structure that connects adjacent water cavities, and the water passage structures on adjacent partitions are arranged in a staggered manner.

[0005] The water-passing structure is further configured as a group of holes.

[0006] The further configuration is as follows: the two water-passing structures on adjacent layers are located on opposite sides of the partition.

[0007] A further feature is provided: a water level switch for detecting the water level is installed on the top wall of the hot water tank.

[0008] A further feature is provided: a temperature sensor for detecting water temperature is installed on the top wall of the hot water tank.

[0009] A further feature is provided: the top wall of the hot water tank is provided with an exhaust port for pressure relief and venting.

[0010] A further feature is provided: a water inlet is provided on the top wall of the hot water tank.

[0011] Compared with existing technologies, this utility model has a simple and reasonable structure. By setting several layers of partitions inside the hot water tank to divide its internal cavity into multiple water chambers, and connecting adjacent water chambers through a staggered perforation structure, the water flow path is extended, and the flow velocity is suppressed by the perforation, so that the water flows slowly and steadily upward, thereby slowing down the mixing speed of hot and cold water. Furthermore, the low-temperature water after heat exchange flows into the bottom of the hot water tank, flows upward through the perforation, and flows horizontally between the partitions. This repetitive flow causes the low-temperature water to push the hot water upward layer by layer, so that the outlet water temperature at the top of the hot water tank remains relatively constant for a period of time, and the heat exchange efficiency of the heat exchanger remains relatively stable. This allows the faucet to dispense relatively stable warm water, ensuring a good user experience. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a heat exchange system with a hot water tank according to this utility model.

[0013] The following reference numerals are marked on the accompanying drawings: 10. Heat exchanger; 11. First inlet; 12. First outlet; 13. Second inlet; 14. Second outlet; 20. Hot water tank; 21. Baffle; 211. Water passage structure; 22. Uppermost water chamber; 23. Lowermost water chamber; 24. Water inlet; 25. Water outlet; 26. Water level switch; 27. Temperature sensor; 28. Water supply port; 29. ​​Exhaust port; 210. Heating element; 30. Circulation pump. Detailed Implementation

[0014] 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.

[0015] This utility model discloses a heat exchange system with a hot water tank, such as... Figure 1 As shown, the system includes a heat exchanger 10, a hot water tank 20, and a circulating pump 30. The heat exchanger 10 is preferably a plate heat exchanger 10 having a first medium channel and a second medium channel. The heat exchanger 10 is provided with a first inlet 11 and a first outlet 12 communicating with the first medium channel, and a second inlet 13 and a second outlet 14 communicating with the second medium channel. The hot water tank 20 is a barrel-shaped structure closed at both ends. A heating element 210 for heating the water inside the hot water tank 20 is provided on the bottom wall of the hot water tank 20. The hot water tank 20 is equipped with several horizontally extending baffles 21 to divide its internal cavity into multiple water passage chambers. Each baffle 21 has a water passage structure 211 connecting adjacent water chambers, and the water passage structures 211 on adjacent baffles 21 are staggered. The hot water tank 20 is equipped with an inlet 24 connected to the lowermost water chamber 23 and an outlet 25 connected to the uppermost water chamber 22. The outlet 25 of the hot water tank 20 is connected to the second inlet 13 of the heat exchanger 10, and the circulation pump 30 is installed on the pipeline between the two. The inlet 24 is connected to the second outlet 14 of the heat exchanger 10. Preferably, the fluid flow direction in the first medium channel is opposite to that in the second medium channel, i.e., reverse heat exchange. In this way, room temperature water flows into the first medium channel of the heat exchanger 10 through the first inlet 11 and flows out to the water tap through the first outlet 12. The hot water in the hot water tank 20 flows out from the outlet 25 of the uppermost water chamber 22 under the pumping of the circulating pump 30 and flows into the second medium channel and the first medium channel of the heat exchanger 10 through the second inlet 13. The room temperature water inside the hot water tank 20 undergoes heat exchange. The cooled water after heat exchange flows out from the second outlet 14 and into the lowest water cavity 23 through the inlet 24 at the bottom of the hot water tank 20. The cooled water first flows to the upper water cavity through the water passage structure 211, and then flows horizontally between the partitions 21. This process is repeated, and the cooled water pushes the hot water to flow upward layer by layer. This makes the hot water outlet temperature at the top of the hot water tank 20 relatively constant within a certain period of time, so that the heat exchange efficiency of the heat exchanger 10 is relatively stable, thus enabling the faucet to dispense relatively stable warm water.

[0016] In this embodiment, as Figure 1 As shown, the two water-passing structures 211 on the adjacent layers are located on opposite sides of the partition 21, thus forming an S-shaped flow path in the hot water tank 20, which effectively extends the flow distance and reduces the mixing speed of hot and cold water. At the same time, the water-passing structure 211 is a group of holes composed of several small holes, which allows the water to flow slowly and steadily upward, inhibiting rapid penetration and reducing the impact of the water flow, thereby achieving the purpose of slowing down the mixing speed of hot and cold water.

[0017] In this embodiment, as Figure 1As shown, a water level switch 26 and a water inlet 28 are provided on the top wall of the hot water tank 20. The water level switch 26 is used to detect the water level in the hot water tank 20. When the water level in the hot water tank 20 is lower than the first preset value, water is added to the hot water tank 20 through the water inlet 28. When the water level reaches the first preset value, the water replenishment ends.

[0018] In this embodiment, as Figure 1 As shown, a temperature sensor 27 and an exhaust port 29 are installed on the top wall of the hot water tank 20. When the water temperature detected by the temperature sensor 27 is lower than the second preset value, the heating element 210 and the circulation pump 30 work to heat the water in the hot water tank 20. The exhaust port 29 is used to discharge water vapor. When the water temperature detected by the temperature sensor 27 reaches the second preset value, the heating element 210 stops working, the circulation pump 30 stops working, and the heating ends.

[0019] Compared with existing technologies, this utility model has a simple and reasonable structure. By setting several layers of partitions inside the hot water tank to divide its internal cavity into multiple water chambers, and connecting adjacent water chambers through a staggered perforation structure, the water flow path is extended, and the flow velocity is suppressed by the perforation, so that the water flows slowly and steadily upward, thereby slowing down the mixing speed of hot and cold water. Furthermore, the low-temperature water after heat exchange flows into the bottom of the hot water tank, flows upward through the perforation, and flows horizontally between the partitions. This repetitive flow causes the low-temperature water to push the hot water upward layer by layer, so that the outlet water temperature at the top of the hot water tank remains relatively constant for a period of time, and the heat exchange efficiency of the heat exchanger remains relatively stable. This allows the faucet to dispense relatively stable warm water, ensuring a good user experience.

[0020] 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 heat exchange system with a hot water tank, characterized in that, The device includes a heat exchanger, a hot water tank, and a circulating pump, wherein the heat exchanger has a first medium channel and a second medium channel, a first inlet and a first outlet communicating with the first medium channel, and a second inlet and a second outlet communicating with the second medium channel; The hot water tank is a barrel-shaped structure closed at both ends. A heating element is installed on the bottom wall of the hot water tank. Several horizontally extending partitions are installed inside the hot water tank to divide its internal cavity into multiple water chambers. The hot water tank is provided with an outlet connected to the uppermost water chamber and an inlet connected to the lowermost water chamber. The outlet of the hot water tank is connected to the second inlet of the heat exchanger, and the circulation pump is installed on the pipeline between the two. The inlet of the hot water tank is connected to the second outlet of the heat exchanger. Each partition is provided with a water passage structure that connects adjacent water cavities, and the water passage structures on adjacent partitions are arranged in a staggered manner.

2. The heat exchange system with a hot water tank according to claim 1, characterized in that, The water-passing structure is a group of holes.

3. A heat exchange system with a hot water tank according to claim 1, characterized in that, The two water-passing structures on adjacent layers are located on opposite sides of the partition.

4. A heat exchange system with a hot water tank according to claim 1, characterized in that, A water level switch for detecting water level is installed on the top wall of the hot water tank.

5. A heat exchange system with a hot water tank according to claim 1, characterized in that, A temperature sensor for detecting water temperature is installed on the top wall of the hot water tank.

6. A heat exchange system with a hot water tank according to claim 1, characterized in that, The hot water tank has an exhaust port on its top wall for depressurization and venting.

7. A heat exchange system with a hot water tank according to claim 1, characterized in that, A water inlet is provided on the top wall of the hot water tank.

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