A multi-layer blown plate type plate heat exchanger and manufacturing method thereof

Abstract

The present application discloses a multi-layer blown plate type plate heat exchanger and a manufacturing method thereof. The heat exchanger includes a cold water inlet pipe, a cold water outlet pipe, a hot water inlet pipe, a hot water outlet pipe, and a plurality of blown plates arranged in parallel. The cold water inlet pipe and the hot water outlet pipe are parallel to each other and are both arranged below the blown plates. The hot water inlet pipe and the cold water outlet pipe are parallel to each other and are both arranged above the blown plates. A partition plate is provided in the inner cavity of the blown plate, and the partition plate divides the inner cavity of the blown plate into a cold water cavity and a hot water cavity. Cold water inlet flow pipes and hot water outlet flow pipes are respectively provided on both sides below the blown plate, and hot water inlet flow pipes and cold water outlet flow pipes are respectively provided on both sides above the blown plate. Compared with the prior art, compared with the traditional plate heat exchanger of the same volume, the blown plate type plate heat exchanger of the present application is lighter in weight, easier to transport, and has higher heat exchange efficiency; under the condition of the same heat exchange capacity, the structure of the blown plate type plate heat exchanger is more compact.

Description

Technical Field

[0001] The present application relates to the technology of plate heat exchangers, and specifically relates to a multi-layer blown plate type plate heat exchanger and a manufacturing method thereof. Background Art

[0002] An aluminum alloy plate heat exchanger is a new type of high-efficiency heat exchanger formed by stacking a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various plates, and heat exchange is carried out through the plates. A plate heat exchanger is an ideal device for heat exchange between liquid-liquid and liquid-vapor. It has the characteristics of high heat exchange efficiency, small heat loss, compact and lightweight structure, small floor area, convenient installation and cleaning, wide application, and long service life.

[0003] Although the plate heat exchanger has high heat exchange efficiency, it has a large weight (mostly made of stainless steel), which is not conducive to system assembly and transportation. At the same time, the thermal conductivity of stainless steel is relatively small (about 20 W / mK), and the heat exchange efficiency of the heat exchanger is relatively low. Summary of the Invention

[0004] In order to overcome the above technical defects, the present application provides a multi-layer blown plate type plate heat exchanger and a manufacturing method thereof.

[0005] According to the present application, a multi-layer blown plate type plate heat exchanger includes a cold water inlet pipe, a cold water outlet pipe, a hot water inlet pipe, a hot water outlet pipe, and a plurality of blown plates arranged in parallel. The cold water inlet pipe and the hot water outlet pipe are parallel to each other and are both arranged below the blown plates. The hot water inlet pipe and the cold water outlet pipe are parallel to each other and are both arranged above the blown plates. A partition plate is provided in the inner cavity of the blown plate, and the partition plate divides the inner cavity of the blown plate into a cold water cavity and a hot water cavity. Cold water inlet flow pipes and hot water outlet flow pipes are respectively provided on both sides below the blown plate, and hot water inlet flow pipes and cold water outlet flow pipes are respectively provided on both sides above the blown plate. The lower end of the cold water inlet flow pipe is fixed to the cold water inlet pipe, and both ends of the cold water inlet flow pipe are respectively communicated with the cold water inlet pipe and the cold water cavity. The upper end of the cold water outlet flow pipe is fixed to the cold water outlet pipe, and both ends of the cold water outlet flow pipe are respectively communicated with the cold water cavity and the cold water outlet pipe. The upper end of the hot water inlet flow pipe is fixed to the hot water inlet pipe, and both ends of the hot water inlet flow pipe are respectively communicated with the hot water inlet pipe and the hot water cavity. The lower end of the hot water outlet flow pipe is fixed to the hot water outlet pipe, and both ends of the hot water outlet flow pipe are respectively communicated with the hot water cavity and the hot water outlet pipe.

[0006] Preferably, the blown plate is a composite aluminum plate.

[0007] A manufacturing method of a multi-layer blown plate type plate heat exchanger specifically includes the following steps:

[0008] Step 1: Cut three aluminum plates into shape, polish both sides of the middle layer aluminum plate, clean it, and cool it to room temperature;

[0009] Step 2: On the polished surface of the middle-layer aluminum plate, use the graphite printing method to form a graphite circuit on the aluminum plate surface;

[0010] Step 3: One side of the aluminum plate with the printed graphite circuit is attached to the polished surface of another aluminum plate, with the three sides aligned, and riveted along the edges;

[0011] Step 4: Place it in a continuous heating furnace, heat it to a certain temperature and maintain it for a certain time, and perform hot rolling on the double-layer aluminum plate taken out from the continuous furnace to form a composite aluminum plate;

[0012] Step 5: Perform softening annealing on the composite aluminum plate. After cooling to room temperature, drill a process hole at the position of the graphite circuit on the aluminum plate to reach the graphite layer, and pry up the air inlet pipe;

[0013] Step 6: Place the composite aluminum plate on the bulging template of a large-tonnage hydraulic press, align the process hole with the air inlet, attach the upper template to the upper surface of the aluminum plate, and fill the pipeline with high-pressure fluid until the pipeline expands to form a bulging plate with the outer drums of the two-sided channels;

[0014] Step 7: Stack and assemble multiple bulging plates, and combine them with the cold water inlet pipe, cold water outlet pipe, hot water inlet pipe, and hot water outlet pipe through the cold water inlet flow pipe, cold water outlet flow pipe, hot water inlet flow pipe, and hot water outlet flow pipe to form a plate heat exchanger.

[0015] A plate heat exchanger with a multi-layer bulging plate in the present application divides the bulging plate into two independent hot water chambers and cold water chambers in the thickness direction, and cold water and hot water can flow through them respectively, thereby achieving efficient heat exchange. Compared with the traditional plate heat exchanger of the same volume, this bulging plate type plate heat exchanger has a smaller weight, is convenient for transportation and has a higher heat exchange efficiency; under the condition of the same heat exchange capacity, the bulging plate type plate heat exchanger has a more compact structure. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a plate heat exchanger with a multi-layer bulging plate according to an embodiment of the present application.

[0017] Figure 2 is a front view structural diagram of a plate heat exchanger with a multi-layer bulging plate according to an embodiment of the present application.

[0018] Figure 3 is a schematic internal structure diagram of the bulging plate of a plate heat exchanger with a multi-layer bulging plate according to an embodiment of the present application.

[0019] Reference Numerals: 1, cold water inlet pipe; 2, cold water outlet pipe; 3, hot water inlet pipe; 4, hot water outlet pipe; 5, bulging plate; 6, partition plate; 7, cold water chamber; 8, hot water chamber; 9, cold water inlet flow pipe; 10, hot water outlet flow pipe; 11, hot water inlet flow pipe; 12, cold water outlet flow pipe. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0021] As shown in the attached Figure 1 - attached Figure 3 figures, a plate heat exchanger with a multi-layer blown plate includes a cold water inlet pipe 1, a cold water outlet pipe 2, a hot water inlet pipe 3, a hot water outlet pipe 4, and a plurality of blown plates 5 arranged in parallel. The cold water inlet pipe 1 and the hot water outlet pipe 4 are parallel to each other and are both arranged below the blown plates 5. The hot water inlet pipe 3 and the cold water outlet pipe 2 are parallel to each other and are both arranged above the blown plates 5. A partition plate 6 is provided in the inner cavity of the blown plate 5, and the partition plate 6 divides the inner cavity of the blown plate 5 into a cold water cavity 7 and a hot water cavity 8. Cold water inlet flow pipes 9 and hot water outlet flow pipes 10 are respectively provided on both sides below the blown plate 5, and hot water inlet flow pipes 11 and cold water outlet flow pipes 12 are respectively provided on both sides above the blown plate 5. The lower end of the cold water inlet flow pipe 9 is fixed to the cold water inlet pipe 1, and both ends of the cold water inlet flow pipe 9 are respectively communicated with the cold water inlet pipe 1 and the cold water cavity 7. The upper end of the cold water outlet flow pipe 12 is fixed to the cold water outlet pipe 2, and both ends of the cold water outlet flow pipe 12 are respectively communicated with the cold water cavity 7 and the cold water outlet pipe 2. The upper end of the hot water inlet flow pipe 11 is fixed to the hot water inlet pipe 3, and both ends of the hot water inlet flow pipe 11 are respectively communicated with the hot water inlet pipe 3 and the hot water cavity 8. The lower end of the hot water outlet flow pipe 10 is fixed to the hot water outlet pipe 4, and both ends of the hot water outlet flow pipe 10 are respectively communicated with the hot water cavity 8 and the hot water outlet pipe 4.

[0022] The blown plate 5 is a composite aluminum plate.

[0023] A manufacturing method of a plate heat exchanger with a multi-layer blown plate specifically includes the following steps:

[0024] Step 1: Cut three aluminum plates into shape, polish both sides of the middle-layer aluminum plate, clean it, and cool it to room temperature;

[0025] Step 2: Use the graphite printing method to form a graphite circuit on the polished surface of the middle-layer aluminum plate;

[0026] Step 3: Fit one side of the aluminum plate with the printed graphite circuit to the polished surface of another aluminum plate, align the three sides, and rivet along the edges;

[0027] Step 4: Put it into a continuous heating furnace, heat it to a certain temperature and maintain it for a certain time, and perform hot rolling on the double-layer aluminum plate taken out from the continuous furnace to form a composite aluminum plate;

[0028] Step 5: Perform softening annealing on the composite aluminum plate. After cooling to room temperature, drill a process hole to the graphite layer at the graphite circuit position of the aluminum plate, and pry up the inlet pipe opening;

[0029] Step Six: Place the composite aluminum plate on the bulging template of a large-tonnage hydraulic press, align the process holes with the air inlets, make the upper template fit the upper surface of the aluminum plate, and fill the pipeline with high-pressure fluid until the pipeline expands to form a blown plate 5 with the outer bulging of the two-sided channels.

[0030] Step Seven: Stack and assemble multiple blown plates 5, and combine them with the cold water inlet pipe 1, cold water outlet pipe 2, hot water inlet pipe 3, and hot water outlet pipe 4 through the cold water inlet flow pipe 9, cold water outlet flow pipe 12, hot water inlet flow pipe 11, and hot water outlet flow pipe 10 to form a plate heat exchanger.

[0031] Working principle: Hot water flows in from the hot water inlet pipe 3 and successively passes through the hot water inlet flow pipe 11, hot water chamber 8, hot water outlet flow pipe 10, and hot water outlet pipe 4. Cold water flows in from the cold water inlet pipe 1 and successively passes through the cold water inlet flow pipe 9, cold water chamber 7, and cold water outlet pipe 2 to achieve efficient heat exchange. Compared with the traditional plate heat exchanger of the same volume, this blown plate type plate heat exchanger is lighter in weight, easier to transport, and has higher heat exchange efficiency.

[0032] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope defined by the claims of the present application.

Claims

1. A plate heat exchanger of a multi-layer blown plate type, comprising a cold water inlet pipe (1), a cold water outlet pipe (2), a hot water inlet pipe (3), a hot water outlet pipe (4) and a plurality of blown plates (5) arranged in parallel, characterized in that, The cold water inlet pipe (1) and the hot water outlet pipe (4) are parallel to each other and are both arranged below the inflation plate (5). The hot water inlet pipe (3) and the cold water outlet pipe (2) are parallel to each other and are both arranged above the inflation plate (5). A partition plate (6) is provided in the inner cavity of the inflation plate (5), and the partition plate (6) divides the inner cavity of the inflation plate (5) into a cold water cavity (7) and a hot water cavity (8). Cold water inlet flow pipes (9) and hot water outlet flow pipes (10) are respectively provided on both sides below the inflation plate (5), and hot water inlet flow pipes (11) and cold water outlet flow pipes (12) are respectively provided on both sides above the inflation plate (5). The lower end of the cold water inlet flow pipe (9) is fixed to the cold water inlet pipe (1), and both ends of the cold water inlet flow pipe (9) are respectively communicated with the cold water inlet pipe (1) and the cold water cavity (7). The upper end of the cold water outlet flow pipe (12) is fixed to the cold water outlet pipe (2), and both ends of the cold water outlet flow pipe (12) are respectively communicated with the cold water cavity (7) and the cold water outlet pipe (2). The upper end of the hot water inlet flow pipe (11) is fixed to the hot water inlet pipe (3), and both ends of the hot water inlet flow pipe (11) are respectively communicated with the hot water inlet pipe (3) and the hot water cavity (8). The lower end of the hot water outlet flow pipe (10) is fixed to the hot water outlet pipe (4), and both ends of the hot water outlet flow pipe (10) are respectively communicated with the hot water cavity (8) and the hot water outlet pipe (4).

2. The plate heat exchanger of the multi-layer blown plate type according to claim 1, characterized in that, The inflation plate (5) is a composite aluminum plate.

3. A manufacturing method of a plate heat exchanger with a multi-layer blown plate type according to any one of claims 1-2, characterized in that, Specifically, it includes the following steps: Step 1: Cut three aluminum plates into shape, polish both sides of the middle-layer aluminum plate, clean it, and cool it to room temperature; Step 2: Use the graphite printing method to form a graphite circuit on the polished surface of the middle-layer aluminum plate; Step 3: Fit one side of the aluminum plate with the printed graphite circuit to the polished surface of another aluminum plate, align the three sides, and rivet along the edges; Step 4: Place it in a continuous heating furnace, heat it to a certain temperature and maintain it for a certain time, and perform hot rolling on the double-layer aluminum plate taken out from the continuous furnace to form a composite aluminum plate; Step 5: Perform soft annealing on the composite aluminum plate. After cooling to room temperature, drill a process hole to the graphite layer at the position of the graphite circuit on the aluminum plate, and pry up the inlet pipe port; Step 6: Place the composite aluminum plate on the bulging template of a large-tonnage hydraulic press, align the process hole with the air inlet, fit the upper template to the upper surface of the aluminum plate, and fill the pipeline with high-pressure fluid until the pipeline expands to form an inflation plate (5) with the outer drums of the two-sided channels; Step 7: Stack and assemble multiple inflation plates (5), and integrate them with the cold water inlet pipe (1), cold water outlet pipe (2), hot water inlet pipe (3), and hot water outlet pipe (4) through the cold water inlet flow pipe (9), cold water outlet flow pipe (12), hot water inlet flow pipe (11), and hot water outlet flow pipe (10) to form a plate heat exchanger.

Images