A plate heat exchanger assembly

Abstract

This disclosure proposes a plate-type heat exchange assembly, including a plate-shaped flow channel plate (1), a first plate-shaped cover plate (2), and a first plate-shaped heating element (4). The plate-shaped flow channel plate (1) has a first flow channel (3) on its front side. The first plate-shaped cover plate (2) is stacked and connected to the front side of the plate-shaped flow channel plate (1) so that the first plate-shaped cover plate (2) covers the first flow channel (3) to form a first flow channel. The first plate-shaped heating element (4) is attached to the outer side of the first plate-shaped cover plate (2) and covers the area of ​​the outer side corresponding to the first flow channel. This plate-type heat exchange assembly is beneficial to improving energy efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heating technology, specifically a plate-type heat exchange component. Background Technology

[0002] Plate heat exchangers are frequently used in heating systems for heat exchange, and the exchange medium is diverse. One type is the electrically heated plate heat exchanger, such as the PTC semiconductor electrically heated plate heat exchanger disclosed in CN206847441U. This plate heat exchanger includes multiple plate bodies arranged and stacked sequentially to form a plate bundle. Each plate body has two corner holes on the same side, and parallel staggered mounting slots are located between these corner holes. A PTC semiconductor electric heater is installed in each mounting slot, and adjacent plate bodies are sealed with sealing gaskets. Although this electrically heated plate heat exchanger achieves the electric heating function, the need for multiple mounting slots on the plate bodies to install the PTC semiconductor electric heater significantly reduces the heat exchange area of ​​the plate bodies, which is detrimental to improving energy efficiency.

[0003] Therefore, this application proposes a plate-type heat exchange component that is beneficial to improving energy efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and propose a plate heat exchange component that is conducive to improving energy efficiency.

[0005] Compared with the prior art, this utility model proposes a plate-type heat exchange assembly, including a plate-shaped flow channel plate, a first plate-shaped cover plate, and a first plate-shaped heating element. The plate-shaped flow channel plate has a first flow channel on its front side. The first plate-shaped cover plate is stacked and connected to the front side of the plate-shaped flow channel plate so that the first plate-shaped cover plate covers the first flow channel to form a first flow channel. The first plate-shaped heating element is attached to the outer side of the first plate-shaped cover plate and covers the area of ​​the outer side corresponding to the first flow channel.

[0006] Compared with the prior art, the present invention has the following advantages after adopting the above structure:

[0007] This disclosure improves upon existing technology by eliminating the mounting slot and instead designs a first sheet-like heating element that is fitted and connected to the outer side of the first sheet-like cover plate, covering the area of ​​the outer side corresponding to the first flow channel. Furthermore, the first sheet-like cover plate and the front side of the sheet-like flow channel plate are stacked and connected so that the first sheet-like cover plate covers the first flow channel, forming the first flow channel. This achieves a sheet-like heating solution. Because there is a large coverage area between the first sheet-like heating element and the outer side of the first sheet-like cover plate, and the inner side of the first sheet-like cover plate is the first flow channel, the medium flowing through the first flow channel can rapidly absorb heat from the heat conducted from the first sheet-like cover plate. This results in a large heat exchange area and a very short distance, which is beneficial for heat exchange efficiency and thus improves energy efficiency. In addition, this disclosure also has the advantage of rapid heating.

[0008] In some embodiments, a second sheet cover plate is further included, wherein a second flow groove is provided on the rear side of the sheet flow groove plate, and the second sheet cover plate is stacked and connected to the rear side of the sheet flow groove plate so that the second sheet cover plate covers the second flow groove to form a second flow channel.

[0009] In some embodiments, the first flow channel and the second flow channel are arranged alternately and sequentially, and adjacent first flow channels and second flow channels share adjacent sides.

[0010] In some embodiments, the first flow channel and the second flow channel are both labyrinth channels that extend in an S-shape along the length of the sheet-like flow channel plate.

[0011] In some embodiments, the plate-shaped flow channel is characterized by having an inlet and an outlet for the medium at one end along its length.

[0012] In some embodiments, the sheet-like flow channel plate is provided with a first through hole at the inlet, through which the medium enters the sheet-like flow channel plate, and with a second through hole at the outlet, through which the medium flows out of the sheet-like flow channel plate.

[0013] In some embodiments, a second sheet heating element is further included, which is attached to the outer side of the second sheet cover and covers the area of ​​the outer side corresponding to the second flow channel.

[0014] In some embodiments, both the first sheet heating element and the second sheet heating element are flexible thin-film electric heating devices. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the rear side of a plate-type heat exchanger assembly disclosed herein.

[0016] Figure 2 This is a three-dimensional schematic diagram of the front side of a plate-type heat exchanger assembly disclosed herein.

[0017] Figure 3 This is a three-dimensional schematic diagram of the front side of a sheet-like flow channel plate disclosed herein.

[0018] Figure 4 This is a three-dimensional schematic diagram of the rear side of a sheet-like flow channel plate disclosed herein.

[0019] Figure 5 This is a three-dimensional schematic diagram of the inner side of a first sheet-like cover plate disclosed herein.

[0020] Figure 6 This is a three-dimensional schematic diagram of a sealing ring disclosed herein.

[0021] Figure 7 This is a front view of the front side of a sheet-like flow channel plate disclosed herein.

[0022] Figure 8 This is a sectional view along axis AA.

[0023] Explanation of reference numerals in the attached drawings: 1-plate-shaped flow channel plate, 2-first plate-shaped cover plate, 3-first flow channel, 4-first plate-shaped heating element, 5-second plate-shaped cover plate, 6-second flow channel, 7-side, 8-inlet, 9-outlet, 10-first through hole, 11-second through hole. Detailed Implementation

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The embodiments described below are merely examples, and other obvious variations will arise for those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0025] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0026] like Figures 1 to 8As shown, this disclosure proposes a plate-type heat exchange assembly, including a plate-shaped flow channel plate 1, a first plate-shaped cover plate 2, and a first plate-shaped heating element 4. The plate-shaped flow channel plate 1 has a first flow channel 3 on its front side. The first plate-shaped cover plate 2 is stacked and connected to the front side of the plate-shaped flow channel plate 1 so that the first plate-shaped cover plate 2 covers the first flow channel 3 to form a first flow channel. The first plate-shaped heating element 4 is attached to the outer side of the first plate-shaped cover plate 2 and covers the area of ​​the outer side corresponding to the first flow channel.

[0027] In this example, the sheet-like flow channel plate 1, the first sheet-like cover plate 2, and the first sheet-like heating element 4 all adopt a rectangular sheet-like structure, and the first flow channel 3 is a labyrinth groove that extends in an S-shape along the length direction of the sheet-like flow channel plate 1.

[0028] like Figure 2 As shown, the first sheet-shaped heating element 4 has a large area, completely covering the area of ​​the first sheet-shaped cover plate 2 corresponding to the first flow channel.

[0029] In some embodiments, such as Figure 1 , 2 As shown in Figure 4, it also includes a second sheet-like cover plate 5. The sheet-like flow channel plate 1 has a second flow channel 6 on its rear side. The second sheet-like cover plate 5 is stacked and connected to the rear side of the sheet-like flow channel plate 1 so that the second sheet-like cover plate 5 covers the second flow channel 6 to form a second flow channel. The second sheet-like cover plate 5 is also rectangular. In this way, setting the second flow channel is beneficial to increasing the flow rate of the boosting medium.

[0030] Furthermore, such as Figure 8 As shown, the first flow channel 3 and the second flow channel 6 are arranged alternately and sequentially, and adjacent first flow channels 3 and second flow channels 6 share adjacent side portions 7. In this way, on the one hand, the first flow channels 3 and second flow channels 6 are close to each other, with a compact structure, which is conducive to heat exchange; on the other hand, it is beneficial to manufacture the first flow channels 3 and second flow channels 6 with roughly the same height along the front and back direction of the plate-shaped flow channel plate 1, which is conducive to making them thinner. Making them thinner also allows the first plate-shaped heating element 4 to better heat the medium in the first flow channel and the second flow channel simultaneously.

[0031] Of course, for faster heating, a second sheet-like heating element can be added, which is attached to the outer side of the second sheet-like cover plate 5 and covers the area of ​​the outer side corresponding to the second flow channel. In this example, the structure of the second sheet-like heating element is the same as that of the first sheet-like heating element 4.

[0032] For better heat exchange, such as Figure 4 As shown, the second flow channel 6 is also configured as a labyrinth channel extending in an S-shape along the length of the sheet-like flow channel plate 1.

[0033] In some embodiments, such as Figure 3 ,4 As shown in Figure 8, the plate-shaped flow channel 1 has a medium inlet 8 and an outlet 9 at one end along its length. This facilitates the extension of the first and second flow channels.

[0034] like Figure 3 , 8 As shown, an inlet 8 and an outlet 9 are provided on the front side of the sheet-like flow channel plate 1, as follows: Figure 4 , 8 As shown, an inlet 8 and an outlet 9 are provided on the rear side of the sheet-like flow channel plate 1.

[0035] like Figure 3 , 4 As shown, the sheet-like flow channel plate 1 has a first through hole 10 at the inlet 8, through which the medium enters the sheet-like flow channel plate 1. A second through hole 11 is provided at the outlet 9, through which the medium flows out of the sheet-like flow channel plate 1. This design is simple.

[0036] To guide the medium through the first through hole 10 and inlet 8 into the sheet-like flow channel plate 1, and similarly, to guide the medium out of the sheet-like flow channel plate 1 through outlet 9 and second through hole 11, a sealing ring is provided between the first sheet-like cover plate 2 and the front side of the sheet-like flow channel plate 1, such as... Figure 6 The image shows a sealing ring with an open design on the side of the first through hole 10 facing the inlet 8 and the side of the second through hole 11 facing the outlet 9, thereby guiding the medium through the first through hole 10 and the inlet 8 into the sheet-like flow channel plate 1. Similarly, the sealing ring guides the medium through the outlet 9 and the second through hole 11 to flow out of the sheet-like flow channel plate 1.

[0037] To better prevent leaks, such as Figure 6 The sealing ring shown also extends along the periphery of the first flow channel; similarly, the sealing ring can also be provided in the second flow channel.

[0038] In this example, since the first flow channel is formed by the front and rear assembly of the first sheet cover plate 2 and the second flow channel is formed by the front and rear assembly of the second sheet cover plate 5, both the first sheet cover plate 2 and the second sheet cover plate 5 extend and cover the areas of the first through hole 10 and the second through hole 11 of the sheet flow channel plate 1. Therefore, the first sheet cover plate 2 and the second sheet cover plate 5 also have openings in the corresponding areas of the first through hole 10 and the second through hole 11. Thus, structurally, the first through hole 10 and the second through hole 11 sequentially penetrate the first sheet cover plate 2, the sheet flow channel plate 1 and the second sheet cover plate 5 along the front and rear direction of the sheet flow channel plate 1, thereby realizing the inflow / outflow of the medium.

[0039] In some embodiments, both the first sheet-shaped heating element 4 and the second sheet-shaped heating element are flexible thin-film electric heating devices. The flexible thin-film electric heating device can employ existing technology, such as a heating element, which is a soft, bendable thin-film electric heating device. This heating element is formed by evenly distributing a foil-like or filamentous metal heating element between glass fiber cloth coated with high-temperature resistant silicone rubber, and then molding it at high temperature. It is thin, lightweight, heats up rapidly when energized, and has the characteristics of a large heating surface, uniform heating, weather resistance, corrosion resistance, environmental friendliness, flame retardancy, easy installation, long lifespan, and high insulation strength. Therefore, because its main raw material is silicone rubber, the heating element is also called a "silicone rubber heating element."

[0040] It should be noted that the sheet heating element 4 is not limited to any particular structure. Any sheet-shaped heating element 4 that is suitable can be used in this patent. For example, the sheet heating element 4 can be a flexible alloy heating wire or a thick film heating sheet.

[0041] When understanding this disclosure, the above structure may be referred to other embodiments / appendices if necessary. Figure 1 And that's understood, so I won't go into details here.

[0042] The above description is merely an illustrative embodiment of this utility model. Therefore, all equivalent changes or modifications made to the structure, features, and principles described in the scope of protection of this utility model are included within the scope of protection of this utility model.

Claims

1. A plate-type heat exchanger assembly, characterized in that, The device includes a sheet-like flow channel plate (1), a first sheet-like cover plate (2), and a first sheet-like heating element (4). The sheet-like flow channel plate (1) has a first flow channel (3) on its front side. The first sheet-like cover plate (2) is stacked and connected to the front side of the sheet-like flow channel plate (1) so that the first sheet-like cover plate (2) covers the first flow channel (3) to form a first flow channel. The first sheet-like heating element (4) is attached to the outer side of the first sheet-like cover plate (2) and covers the area of ​​the outer side corresponding to the first flow channel.

2. The plate-type heat exchanger assembly as described in claim 1, characterized in that, It also includes a second sheet cover plate (5), and a second flow groove (6) is provided on the rear side of the sheet flow groove plate (1). The second sheet cover plate (5) and the rear side of the sheet flow groove plate (1) are stacked and connected so that the second sheet cover plate (5) covers the second flow groove (6) to form a second flow channel.

3. The plate-type heat exchanger assembly as described in claim 2, characterized in that, The first flow groove (3) and the second flow groove (6) are arranged alternately in sequence, and the adjacent first flow groove (3) and the second flow groove (6) share the adjacent side (7).

4. The plate-type heat exchanger assembly as described in claim 3, characterized in that, Both the first flow groove (3) and the second flow groove (6) are labyrinth grooves that extend in an S-shape along the length of the sheet-like flow groove plate (1).

5. The plate-type heat exchange assembly as described in claim 1, 2, 3, or 4, characterized in that, The plate-shaped flow channel (1) has a medium inlet (8) and outlet (9) at one end along its length.

6. The plate-type heat exchanger assembly as described in claim 5, characterized in that, The sheet-like flow channel plate (1) has a first through hole (10) at the inlet (8), through which the medium enters the sheet-like flow channel plate (1) via the first through hole (10) and the inlet (8), and a second through hole (11) at the outlet (9), through which the medium flows out of the sheet-like flow channel plate (1) via the outlet (9) and the second through hole (11).

7. The plate-type heat exchange assembly as described in claim 2 or 3, characterized in that, It also includes a second sheet heating element, which is attached to the outer side of the second sheet cover (5) and covers the area of ​​the outer side corresponding to the second flow channel.

8. The plate-type heat exchanger assembly as described in claim 7, characterized in that, Both the first sheet heating element (4) and the second sheet heating element are flexible thin-film electric heating devices.

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