Improved rectangular original surface heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, and discloses an improved rectangular original surface heat exchanger which comprises a rectangular heat exchange plate and a cover box, a corrugated circulation channel is arranged in the heat exchange plate, connecting nozzles are arranged at the two ends of the circulation channel, and connecting nozzles are arranged on the front side and the rear side of the heat exchange plate. A plurality of heat exchange plates are overlapped and tightly connected together through adjacent connecting nozzles to form a heat exchange plate set, the outer side face of the heat exchange plate on the outermost side of one end of the heat exchange plate set is a plane, the plane is tightly connected with a fixing clamping plate I, and the connecting nozzles on the heat exchange plate on the outermost side of the other end of the heat exchange plate set are connected with a fixing clamping plate II in a penetrating mode. A cover box is fixed to the periphery of the heat exchange plate set and between the fixing clamping plate I and the fixing clamping plate II, an air inlet pipe is fixed to the side wall of the cover box, and an air outlet pipe is fixed to the side wall of the opposite side of the air inlet pipe. The heat exchanger has the advantages that a collection cavity is not arranged, the corrugated structure of the surface heat exchanger is provided, the machining efficiency is considered, and the welding and assembling speed is high.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to an improved rectangular primary surface heat exchanger. Background Art

[0002] The primary surface heat exchanger is a small heat exchanger with a compact structure and is applied to fields such as air conditioners. In the prior art, such as the surface heat exchanger (registration number 10-2050139) for improving the internal pressure performance in a Korean patent, by stacking corrugated plates and arranging fluid pipes for inlet and outlet of fluids, heat exchange between two fluids is completed. There are multiple fluid inlets and outlets. In order to complete the fluid inlet and outlet, a collecting chamber needs to be installed around the fluid inlets and outlets. Four fluid inlet and outlet pipes need to be connected to four collecting chambers, and its processing process is inconvenient. For actual products, not only the heat exchange efficiency needs to be considered, but also the processing cost needs to be considered. There can be product profits only within a certain balance range.

[0003] For a plate heat exchanger, such as a rectangular box plate heat exchanger with the publication number CN219200133U, the corresponding number of heat exchange fins is selected according to the actual heat exchange requirements and is slidably connected to the fixing rods on the vertical plates through the sliding grooves on the base, and there is a certain interval between the heat exchange fins. There is a sealing plate on the rotating shaft between every two heat exchange fins. When it is necessary to change the heat exchange efficiency, only the heat exchange fins need to be added or reduced. The number of such heat exchange fins can be changed, and the installation and processing are relatively time-saving, which has reference significance. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides an improved rectangular primary surface heat exchanger.

[0005] The utility model is realized by adopting the following technical solutions: An improved rectangular primary surface heat exchanger includes a rectangular heat exchange plate and a cover box. A corrugated flow channel is arranged inside the heat exchange plate, and connecting nozzles are arranged at both ends of the flow channel. There are connecting nozzles on both the front and back sides of the heat exchange plate. Multiple heat exchange plates are stacked and tightly connected together by adjacent connecting nozzles to form a heat exchange plate group. The outer side surface of the outermost heat exchange plate at one end of the heat exchange plate group is a plane, and a fixed clamping plate I is tightly attached and connected to the plane. The connecting nozzle on the outermost heat exchange plate at the other end of the heat exchange plate group penetrates and connects to a fixed clamping plate II. An inlet and an outlet are fixed on the outer side surface of the fixed clamping plate II. A cover box is fixed between the periphery of the heat exchange plate group, the fixed clamping plate I and the fixed clamping plate II. An inlet pipe is fixed on the side wall of the cover box, and an outlet pipe is fixed on the side wall opposite to the inlet pipe. There is a gap between the cover box and the heat exchange plate group. Gas enters from one side of the inlet pipe, passes through the gaps between adjacent heat exchange plates, and exits from the outlet pipe.

[0006] The heat exchange plate is stamped from a metal plate into protrusions and corrugations, and two metal plates are tightly welded together, and the opposite protrusions form the flow channel.

[0007] A fastening screw rod is provided between the fixed splint I and the fixed splint II. The fastening screw rod passes through the fixed splint I and the fixed splint II, and fastening nuts are provided at both ends.

[0008] Preferably, two fastening screw rods are provided on each of the air inlet side and the air outlet side.

[0009] Furthermore, there is a shock absorption mechanism. The shock absorption mechanism includes a connecting plate and a support base. Connecting plates are fixedly arranged at the bottom ends of the fixed splint I and the fixed splint II. The support base is provided with an installation groove. A shock absorption spring is fixedly connected in the installation groove. A limiting groove is formed on the inner wall of the installation groove. A limiting block is arranged at the lower part of the connecting plate. The limiting block enters the installation groove and is clamped with the limiting groove. The bottom surface of the limiting block is fixedly connected with the upper end of the shock absorption spring.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] By connecting the heat exchange plates in a stacked manner through the connecting nozzles and directly connecting the liquid inlet and the liquid outlet to the pipelines, there is no need to provide a collecting cavity. It has both the corrugated structure of the surface heat exchanger and takes into account the processing efficiency. The assembly speed is fast by welding from the inside to the outside.

[0012] The present utility model also takes into account the problem of uneven fluid flow rate and the impact vibration when suddenly opening or closing. The vibration amplitude of the heat exchanger is reduced by the friction between the limiting block and the limiting groove and the elasticity of the shock absorption spring, improving the shock absorption effect of the heat exchanger. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is a schematic diagram of the internal structure of the present utility model;

[0015] Figure 3 is a schematic diagram of the heat exchange plate of the present utility model;

[0016] Figure 4 is a schematic diagram of the structure of the shock absorption mechanism of the present utility model.

[0017] Reference numerals: 1, fixed splint II; 2, liquid inlet; 3, liquid outlet; 4, fastening screw rod; 5, heat exchange plate; 6, fixed splint I; 7, connecting nozzle; 8, flow passage; 9, corrugation; 10, air inlet pipe; 11, hood box; 12, connecting plate; 13, limiting block; 14, limiting groove; 15, installation groove; 16, shock absorption spring; 17, support base. Detailed Embodiment

[0018] As shown in the figure, an improved rectangular primary surface heat exchanger includes a rectangular heat exchange plate 5 and a shroud box 11. A flow channel 8 with corrugations 9 is provided inside the heat exchange plate 5, and connecting nozzles 7 are provided at both ends of the flow channel 8. There are connecting nozzles 7 on both the front and back sides of the middle heat exchange plate 5. Multiple heat exchange plates 5 are stacked and tightly connected together by adjacent connecting nozzles 7 to form a heat exchange plate group. The connecting nozzles 7 create a gap between the heat exchange plates 5, and gas passes through the gap. The outer side surface of the outermost heat exchange plate 5 at one end of the heat exchange plate group is a plane, and a fixed clamping plate I 6 is tightly connected to the plane. The connecting nozzle 7 on the outermost heat exchange plate 5 at the other end of the heat exchange plate group penetrates and connects to the fixed clamping plate II 1. An inlet port 2 and an outlet port 3 are fixed on the outer side surface of the fixed clamping plate II 1. A shroud box 11 is fixed between the periphery of the heat exchange plate group, the fixed clamping plate I 6, and the fixed clamping plate II 1. An inlet pipe 10 is fixed on the side wall of the shroud box 11, and an outlet pipe (which is in the blocked part in the figure and thus not shown) is fixed on the side wall opposite to the inlet pipe 10. There is a gap between the shroud box 11 and the heat exchange plate group. Gas enters from one side of the inlet pipe 10, passes through the gaps between adjacent heat exchange plates 5, and exits from the outlet pipe.

[0019] Manufacturing method of the flow channel 8: The heat exchange plate 5 is stamped from a metal plate into protrusions and corrugations 9. Two metal plates are pressed tightly together, and the contact gaps are welded and sealed. Opposite protrusions form the flow channel 8. Figure 3 For a simplified view, the actual corrugation coverage can be distributed as much as possible. The blank space in the middle of the protrusions does not need to be as wide as shown in the figure and can be separated by a partition with a thickness of millimeters.

[0020] For more secure connection, a fastening screw 4 is provided between the fixed clamping plate I 6 and the fixed clamping plate II 1. The fastening screw 4 passes through the fixed clamping plate I 6 and the fixed clamping plate II 1, and nuts are fastened at both ends. In fact, only the chamber for the gas passage path is provided, and the liquid inlet and outlet are directly connected to the pipeline, and there is no need to set up a collecting chamber.

[0021] Processing process: Stamp the rectangular plate into shape, press two pieces tightly and weld them. Weld the connecting nozzle 7 around the holes punched in the heat exchange plate 5. The outermost rectangular plate is not stamped but only cut into shape and welded together with a stamped rectangular plate. Select the required number of heat exchange plates 5, align and weld the connecting nozzles 7. Press the fixed clamping plate II tightly against the plane side of the non-stamped plate and weld them. Weld the connecting nozzle of the other outermost heat exchange plate 5 to the fixed clamping plate I 6, and open holes in the fixed clamping plate I 6. The inlet port 2 and the outlet port 3 are connected to the connecting nozzle through the holes. For firmness, reinforcing plates (not shown in the figure) can be welded on the outer side walls of the upper and lower sides after multiple heat exchange plates 5 are connected together. The reinforcing plates reinforce and connect all the heat exchange plates 5 from one end to the other. Weld the shroud box 11 fixed between the periphery of the heat exchange plate group, the fixed clamping plate I 6, and the fixed clamping plate II 1. Open holes are processed on the shroud box 11, and the inlet pipe 10 and the outlet pipe are welded at the holes.

[0022] To cope with the impact of flow rate changes, vibrations or jolts (such as in vehicle applications), a shock absorption mechanism is provided, including a connecting plate 12 and a support base 17. Connecting plates 12 are fixed to the bottoms of the fixed clamping plate I 6 and the fixed clamping plate II 1. The support base 17 is provided with an installation groove 15, a shock absorption spring 16 is fixedly connected inside the installation groove 15, a limiting groove 14 is provided on the inner wall of the installation groove 15, a limiting block 13 is provided at the lower part of the connecting plate 12, the limiting block 13 enters the installation groove 15 and is clamped with the limiting groove 14, and the bottom surface of the limiting block 13 is fixedly connected to the upper end of the shock absorption spring 16. The connecting plate 12, the limiting block 13, the limiting groove 14, the installation groove 15, the shock absorption spring 16, and the support base 17 are first processed and assembled separately, and then the top surface of the connecting plate 12 is welded to the fixed clamping plate I 6 and the fixed clamping plate II 1. When the heat exchanger vibrates, the limiting block 13 generates friction with the limiting groove 14 in the support base 17 and undergoes displacement. At the same time, the connecting plate 12 presses down on the shock absorption spring 16, and the vibration amplitude of the heat exchanger is reduced through the friction between the limiting block 13 and the limiting groove 14 and the elasticity of the shock absorption spring 16.

[0023] Heat exchange process: The liquid enters from the liquid inlet 2 and exits from the liquid outlet 3, the intake pipe 10 intakes air, and the outlet pipe discharges air. The heat exchange plate 5 completes heat transfer. Of course, the liquid and gas are not limited to the above arrangements. As long as the liquid inlet 2, the liquid outlet 3, the intake pipe 10, and the outlet pipe actually flow through two media, or media of the same type under different temperature conditions, heat exchange can be achieved. Therefore, the technical terms of the liquid inlet 2, the liquid outlet 3, the intake pipe 10, and the outlet pipe do not constitute a structural limitation of the present invention. As long as the devices have the same structure, they are within the protection scope of the present invention.

Claims

1. An improved rectangular original surface heat exchanger, comprising a rectangular heat exchange plate (5) and a cover box (11), characterized in that, The heat exchange plate (5) is internally provided with a flow channel (8) with corrugations (9). Both ends of the flow channel (8) are provided with connecting nozzles (7). There are connecting nozzles (7) on both the front and rear sides of the heat exchange plate (5). A plurality of heat exchange plates (5) are stacked and tightly connected together by adjacent connecting nozzles (7) to form a heat exchange plate group. The outer side of the outermost heat exchange plate (5) at one end of the heat exchange plate group is a plane, and a fixed clamping plate I (6) is tightly connected to the plane. The connecting nozzle (7) on the outermost heat exchange plate (5) at the other end of the heat exchange plate group penetrates and is connected to the fixed clamping plate II (1). The outer side of the fixed clamping plate II (1) is fixed with a liquid inlet (2) and a liquid outlet (3). A cover box (11) is fixed between the periphery of the heat exchange plate group, the fixed clamping plate I (6) and the fixed clamping plate II (1). An air inlet pipe (10) is fixed on the side wall of the cover box (11), and an air outlet pipe is fixed on the side wall opposite to the air inlet pipe (10). There is a gap between the cover box (11) and the heat exchange plate group. Gas enters from one side of the air inlet pipe (10), passes through the gaps between adjacent heat exchange plates (5), and exits from the air outlet pipe.

2. An improved rectangular original surface heat exchanger according to claim 1, characterized in that, The heat exchange plate (5) is formed by stamping a metal plate into protrusions and corrugations (9). Two metal plates are tightly welded together, and the opposite protrusions form the flow channel (8).

3. An improved rectangular primary surface heat exchanger according to claim 1, characterized in that, A fastening screw (4) is provided between the fixed clamping plate I (6) and the fixed clamping plate II (1). The fastening screw (4) passes through the fixed clamping plate I (6) and the fixed clamping plate II (1), and nuts are fastened at both ends.

4. An improved rectangular primary surface heat exchanger according to claim 3, characterized in that, There are 2 fastening screws (4) on both the air inlet side and the air outlet side.

5. An improved rectangular primary surface heat exchanger according to claim 1, characterized in that, There is also a shock absorption mechanism. The shock absorption mechanism includes a connecting plate (12) and a support base (17). Connecting plates (12) are fixed at the bottom ends of the fixed clamping plate I (6) and the fixed clamping plate II (1). The support base (17) is provided with an installation groove (15). A shock absorption spring (16) is fixedly connected in the installation groove (15). A limiting groove (14) is provided on the inner wall of the installation groove (15). A limiting block (13) is provided at the lower part of the connecting plate (12). The limiting block (13) enters the installation groove (15) and is clamped with the limiting groove (14). The bottom surface of the limiting block (13) is fixedly connected to the upper end of the shock absorption spring (16).

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