Water heater and heat exchanger

Abstract

The invention discloses a water heater and a heat exchanger, and relates to the field of heat exchange, in particular to the field of water heating of new energy automobiles and household appliances. A water heater comprises cooling fins installed on a pipeline and a flow channel surrounding the cooling fins, and an electric heating core is installed in the pipeline. The electric heating core heats the cooling fins, water flows through the cooling fins, the heat exchange area is increased through the cooling fins, the heating efficiency can be improved, and the surface temperature of the heater is reduced. A water heater comprises cooling fins installed on a pipeline and a fan heater, the fan heater generates hot air to heat water in the pipeline, water and electricity separation can be achieved, and safety is high. A heat exchanger comprises cooling fins installed on a pipeline and a flow channel surrounding the cooling fins, first heat exchange fluid flows through the pipeline, and second heat exchange fluid flows through the flow channel. The cooling fins increase the heat exchange area, improve the heat exchange efficiency and facilitate reduction of the size and the weight of the heat exchanger. Preferably, a pipe belt type radiator is used as a pipeline and a radiating fin.

Description

Technical Field

[0001] The present invention relates to the field of heat exchange, and in particular to the field of water heating for new energy vehicles and household appliances. Background Art

[0002] At present, water heaters generally use U-shaped electric heating tubes immersed in water for heating, or install PTC ceramic sheets at the bottom of the heat sink and immerse the heat sink in water for heating. This structure is simple and effective, but there are problems such as the surface temperature of the heater is too high, bubbles are easily generated, and leakage is easy when the sealing structure is damaged.

[0003] At present, water-to-water heat exchangers generally use stacked metal plates to form overlapping cold and hot channels, and the cold and hot fluids exchange heat through the metal plates separating them. This structure has problems such as the heat dissipation area being limited by the total area of ​​the metal plates and the large flow resistance.

[0004] The automobile engine water-cooled radiator is an excellent radiator, which consists of a radiator core and a water chamber for cooling. The coolant flows in the radiator core, and the air flows through the radiator core at high speed. The coolant and the air exchange heat through the radiator core. The tube-belt radiator is made of corrugated heat-dissipating belts and heat-dissipating tubes arranged alternately and welded. Compared with the tube-fin radiator, the tube-belt radiator can increase the heat dissipation area by about 12% under the same conditions. In addition, the heat-dissipating belt has holes similar to shutters to disturb the airflow, so as to destroy the adhesion layer of the flowing air on the surface of the heat-dissipating belt and improve the heat dissipation capacity.

[0005] Application 201910436719.2 proposes an electric heating heat exchange structure, which consists of a tube-belt radiator and an electric heating core. The tube-belt radiator is obtained by removing the water chamber from the structure of the automobile engine water-cooled radiator, and includes a main plate, a heat dissipation belt, a flat tube and a side plate. The electric heating core is a heat source and is inserted and installed in the flat tube. Using this heat exchange structure can increase the heat dissipation area and improve the heat dissipation efficiency. Summary of the invention

[0006] In order to alleviate the deficiencies of the prior art, the present invention provides a water heater and a heat exchanger.

[0007] A water heater comprises a heat sink mounted on a pipe and a flow channel surrounding the heat sink, wherein an electric heating core is installed in the pipe. Preferably, a tube-belt radiator is used, wherein the flat pipe is the pipe, the heat sink is the heat sink, and the electric heating core is inserted and installed in the flat pipe. A plurality of baffles are arranged in the flow channel to divide the flow channel into a plurality of interconnected sub-flow channels, thereby extending the length of the flow channel.

[0008] The beneficial effects of the present invention are: A water heater comprises a heat sink mounted on a pipe and a flow channel surrounding the heat sink, and an electric heating core is installed in the pipe. The electric heating core heats the heat sink, and water flows through the heat sink. The heat exchange area is increased by the heat sink, which can improve the heating efficiency, reduce the surface temperature of the heater, and reduce the generation of bubbles. Preferably, a tube-belt radiator is used, in which the flat tube is the pipe, the heat sink is the heat sink, and the electric heating core is inserted and installed in the flat tube. The tube-belt radiator has a mature process that is conducive to reducing costs; the tube-belt radiator also has a good turbulent effect, which can further improve the heat exchange efficiency. A number of baffles are arranged in the flow channel to divide the flow channel into a number of interconnected sub-flow channels to extend the length of the flow channel. Since the tube-belt radiator is generally a flat structure, appropriately extending the length of the flow channel is conducive to sufficient heating of the water in the flow channel and improving the heat exchange efficiency.

[0009] A water heater comprises a radiating fin mounted on a pipe and a heater, wherein the heater generates hot air to heat the water in the pipe. Preferably, a tube-belt radiator is used, wherein the flat tube is the pipe and the radiating belt is the radiating fin.

[0010] The beneficial effects of the present invention are: A water heater includes a heat sink installed on a pipe and a heater. The heater generates hot air to heat the water in the pipe. The advantage of this structure is that it can separate water and electricity and has high safety. Preferably, a tube-belt radiator is used, in which the flat tube is the pipe and the heat sink is the heat sink. The tube-belt radiator has a mature process that is conducive to reducing costs; the tube-belt radiator has good heat exchange efficiency and can improve water heating efficiency.

[0011] A heat exchanger includes a heat sink mounted on a pipe and a flow channel surrounding the heat sink, wherein a heat exchange fluid 1 flows through the pipe and a heat exchange fluid 2 flows through the flow channel. Preferably, a tube-belt radiator is used, wherein the flat tube is the pipe and the heat sink is the heat sink. A plurality of baffles are arranged in the flow channel to divide the flow channel into a plurality of interconnected sub-flow channels, thereby extending the length of the flow channel.

[0012] The beneficial effects of the present invention are: A heat exchanger includes a heat sink mounted on a pipe and a flow channel surrounding the heat sink, wherein a heat exchange fluid 1 flows through the pipe and a heat exchange fluid 2 flows through the flow channel; the heat sink increases the heat exchange area, improves the heat exchange efficiency, and helps to reduce the volume and weight of the heat exchanger. Preferably, a tube-belt radiator is used, wherein the flat tube is the pipe and the heat sink is the heat sink. The tube-belt radiator has a mature process that helps to reduce costs; the tube-belt radiator also has a good turbulent effect, which can further improve the heat exchange efficiency. A number of baffles are provided in the flow channel to divide the flow channel into a number of interconnected sub-flow channels, thereby extending the length of the flow channel; since the tube-belt radiator is generally a flat structure, appropriately extending the length of the flow channel is conducive to sufficient heat exchange between the pipe and the fluid in the flow channel, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a water heater in which an electric heating core is installed in a pipeline according to the present invention.

[0015] Figure 2 It is a schematic diagram of the structure of a water heater using a heater according to the present invention.

[0016] Figure 3 Schematic diagram of the structure of the heat exchanger according to the present invention.

[0017] In the figure, 1. Pipe, 2. Heat sink, 3. Flow channel, 3-1. Baffle, 3-2. Sub-flow channel, 4. Electric heating core, 5. Heater, 5-1. Fan, 6. Heat exchange fluid 1, 7. Heat exchange fluid 2. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Embodiment 1 exist Figure 1 In the embodiment of the present invention, a water heater is provided with an electric heating core installed in a pipe.

[0020] like Figure 1 As shown: a water heater, comprising a heat sink 2 mounted on a pipe 1 and a flow channel 3 surrounding the heat sink 2, and an electric heating core 4 is installed in the pipe 1. A tube-belt radiator is used, in which the flat tube is the pipe 1 and the heat sink is the heat sink 2. A plurality of baffles 3-1 are arranged in the flow channel 3 to divide the flow channel 3 into a plurality of interconnected sub-flow channels 3-2, thereby extending the length of the flow channel 3.

[0021] Embodiment 2 exist Figure 2 In the embodiment of the present invention, a water heater is used for heating by a heater.

[0022] like Figure 2 As shown: A water heater comprises a heat sink 2 mounted on a pipe 1 and a heater 5, wherein the heater 5 generates hot air to heat the water in the pipe 1. A tube-belt radiator is used, wherein the flat tube is the pipe 1 and the heat sink is the heat sink 2. The heater 5 comprises an electric heating core 4 and a fan 5-1.

[0023] Embodiment 3 exist Figure 3 In one embodiment, the present invention is a heat exchanger.

[0024] like Figure 3As shown: a heat exchanger, comprising a heat sink 2 mounted on a pipe 1 and a flow channel 3 surrounding the heat sink 2, a heat exchange fluid 1 6 flows through the pipe 1, and a heat exchange fluid 2 7 flows through the flow channel 3. A tube-belt radiator is used, wherein the flat tube is the pipe 1 and the heat sink is the heat sink 2. A plurality of baffles 3-1 are arranged in the flow channel 3 to divide the flow channel 3 into a plurality of interconnected sub-flow channels 3-2, thereby extending the length of the flow channel 3.

Claims

1. A water heater, characterized in that: The invention comprises a heat sink installed on a pipe and a flow channel surrounding the heat sink, and an electric heating core is installed in the pipe.

2. The water heater according to claim 1, characterized in that: The water heater uses a tube-belt radiator, wherein the flat tube is the pipeline and the heat dissipation belt is the heat dissipation fin.

3. The water heater according to claim 1 or 2, characterized in that: A plurality of baffles are arranged in the flow channel to divide the flow channel into a plurality of sub-flow channels interconnected with each other.

4. A water heater, characterized in that: The utility model comprises a heat sink installed on the pipeline and a heater, wherein the heater generates hot air to heat the water in the pipeline.

5. The water heater according to claim 4, characterized in that: The water heater uses a tube-belt radiator, wherein the flat tube is the pipeline and the heat dissipation belt is the heat dissipation fin.

6. A heat exchanger, characterized in that: The invention comprises a heat sink installed on a pipe and a flow channel surrounding the heat sink. A heat exchange fluid 1 flows through the pipe, and a heat exchange fluid 2 flows through the flow channel.

7. The heat exchanger according to claim 6, characterized in that: The heat exchanger uses a tube-belt radiator, wherein the flat tube is the pipeline and the heat dissipation belt is the heat dissipation fin.

8. The heat exchanger according to claim 6 or 7, characterized in that: A plurality of baffles are arranged in the flow channel to divide the flow channel into a plurality of sub-flow channels interconnected with each other.

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