Fluid heating device

Abstract

A fluid heating device comprises a plurality of plate-shaped containers which are arranged in an overlapped mode, and fluid cavities used for containing fluid are formed in the plate-shaped containers. A heating element used for heating fluid is arranged between every two adjacent plate-shaped containers, and each heating element is composed of a plurality of electric heating pipes. A liquid inlet and a liquid outlet which are respectively communicated with two opposite ends of the fluid cavity are formed in the plate-shaped container; compared with the prior art, the heating element is not in direct contact with fluid, so that scale of the heating element is fundamentally avoided; secondly, the upper surface and the lower surface of the flat heating element are simultaneously contacted with the plate-shaped container, the contact area is increased, the heat conduction area is large, the plate-shaped container serving as a heat dissipation part quickly takes away heat generated by the heating element, the surface temperature of the heating element is reduced, and the service life of the heating element is prolonged; in addition, the plate sheet structure is arranged in the plate-shaped container, the flowing path of the fluid in the plate-shaped container is prolonged, the turbulence degree is high, and the temperature uniformity in the plate-shaped container is further improved.

Description

Technical Field

[0001] This utility model relates to the field of heating device technology, specifically to a fluid heating device. Background Technology

[0002] A fluid heating device is a device or system that transfers heat to a fluid through an external energy source, thereby raising the fluid temperature. Existing fluid heating devices typically include resistance heating devices, electromagnetic induction heating devices, heat exchange devices, and combustion heating devices.

[0003] Resistance heating devices generate heat through resistive materials and transfer it to the fluid, thus heating the fluid. Existing resistance heating devices mainly include two types: direct contact heating and indirect contact heating. Direct contact heating involves immersing the heating element directly in water, resulting in high tube temperatures. Since the fluid is in direct contact with the heating element, scale formation is easily caused, affecting the lifespan of the heating element. Indirect contact heating typically involves wrapping a water pipe around the heating element. However, in this case, the contact area between the heating element and the water pipe is small, resulting in a small heat dissipation area, more high-temperature zones on the heating element, high tube temperatures, and a shorter lifespan.

[0004] Electromagnetic induction heating devices use alternating current to generate eddy currents in metal pipes or containers, which generate heat through the resistance effect of the metal, indirectly heating the fluid. In this heating method, since the metal pipe is in direct contact with the fluid, scale is easily generated inside the metal pipe after a period of use, which affects the heat transfer of the metal pipe and also affects the service life of the metal pipe.

[0005] The heat exchange device uses high-temperature hot water as a heat source and transfers heat to the fluid through a heat exchanger. This method requires preheating to form high-temperature hot water, and the heating efficiency of the fluid under heat exchange is relatively slow, making it time-consuming and labor-intensive overall.

[0006] Combustion-type heating devices generate high-temperature flue gas or flames by burning fuel, which directly or indirectly heat fluids. This heating method involves large overall equipment, low energy efficiency, and high cost.

[0007] Chinese Announcement No. CN214250155U discloses a tubular fluid electric heater, including a junction box, heating elements, connecting sleeves, heat sinks, tube sheets, a heater housing, baffles, and a temperature sensing element. The heater housing is a semi-closed container with one open end. Inside the heater housing, there are several heating elements and evenly distributed baffles. A tube sheet is installed at the end of the heater housing to seal its open end. The heating elements are U-shaped, and their open ends pass through the baffles and tube sheets and extend into the junction box. A connecting sleeve is sleeved on the outside of the portion of the heating element located between the junction box and the heater housing. The connecting sleeves are connected by heat sinks. A medium inlet is installed near the open end of the heater housing, and a medium outlet is provided near the closed end of the heater housing. A temperature sensing element is installed at the inner end of the closed end of the heater housing.

[0008] The heating element of the heater disclosed above is in direct contact with the fluid to be heated. Scale is easily generated on the heating element during use, which affects the heat conduction and service life of the heating element. At the same time, the heater is connected by a heat sink plate sleeved on the heating element. The same heat sink plate is in contact with multiple heating elements in the circumferential direction, resulting in a small heat dissipation area and slow heat dissipation efficiency. Utility Model Content

[0009] The present invention aims to overcome the defects in the prior art and provide an indirect heating fluid heating device with a long service life.

[0010] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a fluid heating device, comprising a plurality of plate-shaped containers stacked together, wherein a fluid cavity for loading fluid is formed within the plate-shaped containers; a heating element for heating the fluid is provided between adjacent plate-shaped containers, the heating element being composed of a plurality of electric heating tubes; and an inlet and an outlet are formed on the plate-shaped containers respectively connected to opposite ends of the fluid cavity.

[0011] In a preferred embodiment of this utility model, several of the electric heating tubes simultaneously contact two adjacent plate-shaped containers.

[0012] As a preferred embodiment of this utility model, the electric heating tube is provided with a uniform cross-section along its length, and the cross-section of the electric heating tube is a flat tube structure.

[0013] As a preferred embodiment of this utility model, several electric heating tubes are arranged in parallel, and the ends of the electric heating tubes extend outside the plate-shaped container.

[0014] As a preferred embodiment of this utility model, the end of the plate-shaped container is equipped with an inlet pipe that communicates with the inlet, and the inlet pipe is connected in parallel with the inlets of several plate-shaped containers.

[0015] As a preferred embodiment of this utility model, the end of the plate-shaped container is equipped with a liquid outlet pipe that communicates with the liquid outlet, and the liquid outlet pipe is connected in parallel with the liquid outlets of several plate-shaped containers.

[0016] In a preferred embodiment of this utility model, the liquid inlet and the liquid outlet are formed on the same side of the plate-shaped container.

[0017] As a preferred embodiment of this utility model, the plate-shaped container is formed with plates for uniformly distributing the fluid and increasing the degree of fluid turbulence.

[0018] Compared with the prior art, the beneficial effects of this utility model are: by setting a heating element located between adjacent plate-shaped containers, the plate-shaped containers are heated under the heating action of the heating element, thereby realizing indirect heating of the fluid in the plate-shaped containers;

[0019] First, the heating element does not come into direct contact with the fluid, fundamentally avoiding scale formation on the heating element. Second, the flat heating element contacts the plate-shaped container on both its top and bottom surfaces simultaneously, increasing the contact area and heat conduction area. The plate-shaped container, acting as a heat dissipation component, quickly removes the heat generated by the heating element, reducing the surface temperature of the heating element and increasing its service life. Furthermore, by setting a plate structure inside the plate-shaped container, the flow path of the fluid within the container is extended and the turbulence is high, allowing heat to be quickly carried away by the fluid, further improving the temperature uniformity within the plate-shaped container. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 This is a structural diagram of a plate-type container;

[0023] Figure 4 This is a side view of a plate-shaped container;

[0024] Figure 5 yes Figure 4 A cross-sectional view of the AA plane;

[0025] Reference numerals: Plate container 1, fluid chamber 11, plate 12, inlet 13, outlet 14, heating element 2, electric heating tube 21, inlet pipe 3, outlet pipe 4. Detailed Implementation

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figures 1-5As shown, a fluid heating device includes several plate-shaped containers 1 stacked together, each plate-shaped container 1 having a fluid cavity 11 for loading fluid; heating elements 2 for heating the fluid are provided between adjacent plate-shaped containers 1, each heating element 2 consisting of several electric heating tubes 21; and inlet ports 13 and outlet ports 14 are formed on each plate-shaped container 1, which are respectively connected to opposite ends of the fluid cavity 11.

[0028] The number of plate-shaped containers 1 is set according to actual needs, and the number of heating elements 2 is set according to the number of plate-shaped containers 1. Specifically, the number of heating elements 2 is one less than the number of plate-shaped containers 1, to ensure that under the stacking arrangement of multiple plate-shaped containers 1, heating elements 2 are provided between two plate-shaped containers 1, and the plate-shaped containers 1 are formed on the outermost side of the overall fluid heating device.

[0029] The number of electric heating tubes 21 is set according to the actual size and the dimensions of the plate container 1. The larger the size of the plate container 1, the more electric heating tubes 21 are required.

[0030] The inlet 13 and outlet 14 are used to realize the inflow and outflow of fluid in the fluid cavity 11. Under the action of the heating element 2, the fluid flowing into the fluid cavity 11 is indirectly heated, thereby realizing the heating operation of the fluid. The number of inlet 13 and outlet 14 is set according to actual needs to ensure that the inlet and outlet are consistent with the flow rate in the plate container.

[0031] Several electric heating tubes 21 are in contact with two adjacent plate-shaped containers 1 at the same time. The plate-shaped containers 1 are in contact with the electric heating tubes 21. Under the heating effect of the electric heating tubes 21, the plate-shaped containers 1 are heated, thereby heating the fluid in the plate-shaped containers 1.

[0032] The electric heating tube 21 is arranged with a uniform cross-section along its length, and the cross-section of the electric heating tube 21 is a flat tube structure. The electric heating tube 21 is arranged along the flow direction of the fluid to ensure that the fluid is always indirectly heated during the flow process. At the same time, under the action of the flat tube structure of the electric heating tube 21, the contact area between the electric heating tube 21 and the plate container 1 is increased, thereby accelerating the heat exchange effect between the fluid and the electric heating tube 21.

[0033] Several electric heating tubes 21 are arranged in parallel, and the ends of the electric heating tubes 21 extend outside the plate-shaped container 1. Multiple electric heating tubes 21 on the same plate-shaped container 1 are set independently, and multiple electric heating tubes 21 on the same plate-shaped container 1 do not interfere with each other during the heating process. The electric heating tubes 21 extending outside the plate-shaped container 1 are connected to an external circuit, thereby realizing the heating of the electric heating tubes 21.

[0034] The electric heating tube 21 is arranged along the length of the plate-shaped container 1 to ensure the heating efficiency of the electric heating tube 21 and the fluid. At the same time, multiple electric heating tubes 21 are evenly distributed on the surface of the plate-shaped container 1 along the width of the plate-shaped container 1, thereby achieving uniform heating of the plate-shaped container 1 and ensuring uniform heating effect of the fluid.

[0035] The end of the plate container 1 is equipped with an inlet pipe 3 that is connected to the inlet port 13. The inlet pipe 3 is connected in parallel with the inlets 13 of several plate containers 1. Under the action of the same inlet pipe 3, the synchronous liquid feeding effect of multiple plate containers 1 can be achieved at the same time, thereby realizing the uniform distribution of fluid among multiple plate containers 1. The stacked arrangement of multiple plate containers 1 also enables each plate container 1 to heat the fluid inside, thus achieving efficient heating of the fluid.

[0036] The plate-shaped container 1 has a number of liquid inlets 13. The number of liquid inlets 13 is set according to actual needs. Under the setting of the liquid inlets 13, the fluid enters the fluid cavity 11 in a uniform manner, thereby achieving uniform heating of the fluid. At the same time, the liquid inlets 13 and the electric heating tubes 21 do not interfere with each other, ensuring stable heating of the electric heating tubes 21.

[0037] The end of the plate container 1 is equipped with a liquid outlet pipe 4 that is connected to the liquid outlet 14. The liquid outlet pipe 4 is connected in parallel with the liquid outlet 14 of several plate containers 1. Under the action of the same liquid outlet pipe 4, the synchronous liquid outlet effect of multiple plate containers 1 can be achieved at the same time, thereby collecting the fluid in each plate container 1 and ensuring the stable temperature of the liquid outlet of the overall fluid heating device.

[0038] The plate-shaped container 1 has a number of liquid outlets 14. The number of liquid outlets 14 is set according to actual needs. With the setting of multiple liquid outlets 14, the flow of the outlet fluid is more uniform, the fluid stagnation zone or dead zone is reduced, and at the same time, the multiple liquid outlets 14 and the multiple electric heating tubes 21 do not interfere with each other, ensuring the stable heating of the electric heating tubes 21.

[0039] The inlet 13 and outlet 14 are formed on the same side of the plate container 1. During the use of the plate container 1, the plate container 1 is in a vertical state. The inlet 13 and outlet 14 located on the same side facilitate the installation of the inlet pipe 3 and outlet pipe 4 on the same side, thereby facilitating the setting of the overall fluid heating device.

[0040] Plates 12 are formed inside the plate container 1 to extend the fluid flow path and increase the degree of fluid turbulence. This is used to achieve uniform distribution of fluid flow within the plate container 1. The plates 12 distribute the fluid evenly at the inlet and increase the degree of fluid turbulence after entering the heat exchange zone, thereby enhancing the heat exchange effect and ensuring that the fluid can quickly carry away the heat generated by the electric heating tube 21.

[0041] Set the required number of plate-shaped containers 1 as needed, and set all the plate-shaped containers 1 vertically. Set the required number of electric heating tubes 21 between adjacent plate-shaped containers 1, so that the electric heating tubes 21 are attached to the two surfaces of the adjacent plate-shaped containers 1.

[0042] The bottom of the vertically arranged plate-shaped container 1 is used as the liquid inlet 13, and the top of the vertically arranged plate-shaped container 1 is used as the liquid outlet 14. The liquid inlet pipe 3 is connected to the liquid inlet 13 of each plate-shaped container 1, and the liquid outlet pipe 4 is connected to the liquid outlet 14 of each plate-shaped container 1. When the fluid enters the plate-shaped container 1 through the liquid inlet 13, the fluid flows from bottom to top and fills the plate-shaped container 1 under the action of the pump, and then flows to the liquid outlet 14.

[0043] In actual use, the electric heating tube 21 is connected to an external circuit. The electric heating tube 21 is equipped with a resistor for generating heat. When the electric heating tube 21 comes into contact with the plate container 1, the heat generated by the electric heating tube 21 is transferred to the plate container 1, and the fluid in the plate container 1 is heated through the plate container 1.

[0044] Under the action of the vertically arranged plate container 1, the fluid enters the plate container 1 from the bottom and flows upward under the action of the pump. During the flow of the fluid, it is always heated by the plate container 1, thereby achieving the heating of the fluid.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0046] Although this document frequently uses reference numerals from the accompanying drawings, such as plate container 1, fluid cavity 11, plate 12, inlet 13, outlet 14, heating element 2, electric heating tube 21, inlet pipe 3, and outlet pipe 4, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A fluid heating device, characterized in that, The system includes several plate-shaped containers (1) stacked together, each plate-shaped container (1) having a fluid cavity (11) for loading fluid; heating elements (2) for heating the fluid are provided between adjacent plate-shaped containers (1), each heating element (2) consisting of several electric heating tubes (21); each plate-shaped container (1) has an inlet (13) and an outlet (14) respectively connected to opposite ends of the fluid cavity (11).

2. The fluid heating device according to claim 1, characterized in that, Both sides of several of the electric heating tubes (21) are in contact with two adjacent plate-shaped containers (1) at the same time.

3. The fluid heating device according to claim 2, characterized in that, The electric heating tube (21) is provided with a uniform cross-section along its length, and the cross-section of the electric heating tube (21) is a flat tube structure.

4. A fluid heating device according to claim 2, characterized in that, Several of the electric heating tubes (21) are arranged in parallel, and the ends of the electric heating tubes (21) extend outside the plate-shaped container (1).

5. A fluid heating device according to claim 1, characterized in that, The plate-shaped container (1) is equipped with an inlet pipe (3) that is connected to the inlet port (13) at its end. The inlet pipe (3) is connected in parallel with the inlets (13) of several plate-shaped containers (1).

6. A fluid heating device according to claim 1, characterized in that, The plate-shaped container (1) is equipped with a liquid outlet pipe (4) that is connected to the liquid outlet (14) at its end. The liquid outlet pipe (4) is connected in parallel with the liquid outlets (14) of several plate-shaped containers (1).

7. A fluid heating device according to claim 1, characterized in that, The inlet (13) and outlet (14) are formed on the same side of the plate-shaped container (1).

8. A fluid heating device according to claim 1, characterized in that, The plate-shaped container (1) has plates (12) formed inside for uniformly distributing the fluid and increasing the degree of fluid turbulence.

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