Plate heat exchanger and water treatment device

Abstract

The utility model discloses a plate heat exchanger and water treatment facilities. Plate heat exchanger includes a plurality of heat exchange partition board of setting of setting up in turn, and the first gap and the second gap of alternate interval setting are formed between adjacent heat exchange partition board. Plate heat exchanger outside is provided with the flow pass, and each heat exchange partition board is provided with through -hole, and a plurality of through -holes form the flow channel of intercommunication with the flow pass, and the two through -hole orifices of adjacent between the same first gap or second gap form the sealing ring part, and the axial both ends of sealing ring part are sealedly connected with the orifice of two through -holes. The orifice of flow pass of sealing ring part both ends protrudes predetermined length to flow channel. If the flow of plate heat exchanger in unit time is invariable, the above design will make the flow velocity of heat exchange medium and water body increase in the inside of plate heat exchanger, and then means that the flow path of water body and heat exchange medium in the inside of plate heat exchanger is lengthened, thereby can improve the heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a plate heat exchanger and water treatment equipment. Background Technology

[0002] Plate heat exchangers have two isolated flow channels inside, through which the heat exchange medium and water flow. During their flow, heat is exchanged between the medium and water via baffles inside the heat exchanger. The relatively high flow velocity of the heat exchange medium and water within the channels, coupled with the short time they spend flowing through the heat exchanger, leads to poor heat exchange efficiency. Utility Model Content

[0003] To address the problem of poor heat exchange performance caused by the short flow time of water and heat exchange medium through the heat exchanger in existing technologies, this utility model provides a plate heat exchanger and water treatment equipment.

[0004] This application provides a plate heat exchanger with internal water flow channels and heat exchange medium channels.

[0005] The plate heat exchanger includes a plurality of heat exchange baffles stacked sequentially. A first gap and a second gap are formed between adjacent heat exchange baffles. The first gap is used to form the water flow channel, and the second gap is used to form the heat exchange medium channel. The first gap and the second gap are alternately spaced. The plate heat exchanger is provided with a flow port on the outside, and each heat exchange baffle is provided with a through hole. The multiple through holes form a flow channel communicating with the flow port. A sealing ring is formed between the edges of two through holes adjacent to the same first gap or second gap. The two axial ends of the sealing ring are respectively sealed to the edges of the two through holes to close the first gap or the second gap. The sealing ring portion protrudes a predetermined length into the first gap or the second gap; and / or The edges of the flow holes at both ends of the sealing ring protrude into the flow channel by a predetermined length.

[0006] In some embodiments, the flow channel is coaxially aligned with the flow port; The edges of two through holes adjacent to the same first gap or second gap are bent in the same or different directions and sealed together to form the sealing ring portion.

[0007] In some embodiments, two through holes adjacent to the same first gap or second gap are defined as a first hole and a second hole, respectively. The edge of the first hole protrudes towards the flow channel by a predetermined length to reduce the diameter of the flow channel at the first hole. The edge of the second hole bends towards the first hole to form the sealing ring portion, which is sealed to the side of the first hole.

[0008] In some embodiments, two through holes adjacent to the same first gap or second gap are defined as a first hole and a second hole, respectively. The edge of the second hole is bent toward the first hole to form the sealing ring portion. The sealing ring portion passes through the second hole and extends a predetermined length toward the first gap or second gap to reduce the spacing of the first gap or second gap at the sealing ring portion.

[0009] In some embodiments, the edge of the first hole is bent away from the second hole to form a first ring portion, the inner diameter of the first ring portion being the same as the outer diameter of the sealing ring portion.

[0010] In some embodiments, the first ring portion protrudes a predetermined distance into the first gap or the second gap; When the outer edge of the heat exchange baffle of the first hole is overlapped and welded with the outer edge of the heat exchange baffle of the second hole, the end face of the first ring portion coincides with the end face of the sealing ring portion.

[0011] In some embodiments, the side of the first ring portion near the second hole is stamped with a guide structure to facilitate the insertion of the sealing ring portion into the interior of the first ring portion.

[0012] In some embodiments, the edge of the first hole is bent toward the direction of the second hole to form a first ring portion, the inner diameter of the first ring portion is the same as the outer diameter of the sealing ring portion, the axial length of the first ring portion is the same as the width of the first gap or the second gap, and the axial length of the sealing ring portion is greater than the axial length of the first ring portion. When the end of the first ring portion near the second hole abuts against the bottom of the sealing ring portion, the end of the sealing ring portion near the first hole passes through the second hole and extends a predetermined length toward the first gap or the second gap to reduce the spacing of the first gap or the second gap at the sealing ring portion.

[0013] In some embodiments, the diameter of the flow port is smaller than the diameter of the through hole.

[0014] This application also provides a water treatment device, including the above-mentioned plate heat exchanger.

[0015] Compared with the prior art, the plate heat exchanger provided by this utility model has the following advantages: the sealing ring protrudes a predetermined length into the first or second gap, which increases the flow resistance of the heat exchange medium and water when they flow through this gap. If the flow rate of the plate heat exchanger remains constant per unit time, this design increases the flow velocity of the heat exchange medium and water inside the plate heat exchanger. Since the flow rates of the water and heat exchange medium remain unchanged per unit time, the flow path of the water and heat exchange medium inside the plate heat exchanger is lengthened, thereby improving heat exchange efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a plate heat exchanger provided in one embodiment of this application; Figure 2 This is a cross-sectional internal structure diagram of a plate heat exchanger provided in one embodiment of this application; Figure 3 yes Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 yes Figure 2 A schematic diagram of the planar structure of the mid-section; Figure 5 yes Figure 4 Enlarged schematic diagram of the structure at point B; Figure 6 yes Figure 4 A structural diagram of the second embodiment of the structure at point B in the middle; Figure 7 yes Figure 4 A schematic diagram of the third embodiment of the structure at point B.

[0017] 100. Heat exchange baffle; 101. Water flow channel; 102. Heat exchange medium channel; 1001. Flow port; 1002. Flow channel; 01. First gap; 02. Second gap; 03. Through hole; 031. First hole; 0311. First ring; 032. Second hole; 0321. Sealing ring; 04. Guide structure. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention 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, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] like Figure 1 , Figure 2 , Figure 3 The plate heat exchanger shown has a water flow channel 101 and a heat exchange medium channel 102 internally. It should be noted that the water flow channel 101 is used for the flow of water that needs to be heated or cooled, and the heat exchange medium channel 102 is used for the flow of the heat exchange medium used to heat or cool the water. This heat exchange medium can be a liquid such as water or oil. When the heat exchange medium and the water being heated or cooled flow inside the plate heat exchanger, they can exchange energy through the internal baffles of the plate heat exchanger.

[0025] like Figure 4As shown, the plate heat exchanger provided in this application includes multiple heat exchange baffles 100 stacked sequentially. Each heat exchange baffle 100 is typically a metal plate with good thermal conductivity. A first gap 01 and a second gap 02 are formed between adjacent heat exchange baffles 100. The first gap 01 forms a water flow channel 101, and the second gap 02 forms a heat exchange medium channel 102. The first gap 01 and the second gap 02 are alternately arranged. It should be noted that, in order to achieve efficient heat exchange, the plate heat exchanger typically has multiple first gaps 01 and second gaps 02 inside. The alternating stacking of the first gaps 01 and second gaps 02 can greatly improve the heat exchange efficiency of the plate heat exchanger. Inside the plate heat exchanger, all the first gaps 01 are interconnected to form the water flow channel 101, and all the second gaps 02 are interconnected to form the heat exchange medium channel 102.

[0026] Please continue reading. Figure 1 , Figure 4 The plate heat exchanger provided in this application has an external flow port 1001. Each heat exchange baffle 100 has a through hole 03, and multiple through holes 03 form a flow channel 1002 communicating with the flow port 1001. A sealing ring portion 0321 is formed between the edges of two through holes 03 adjacent to the same first gap 01 or second gap 02. The axial ends of the sealing ring portion 0321 are respectively sealed to the edges of the two through holes 03 to close the first gap 01 or the second gap 02. In practical applications, the axial ends of the sealing ring portion 0321 can be sealed to the edges of the two through holes 03 by welding. For ease of understanding, the following is a detailed explanation: The aforementioned flow port 1001 includes two pairs of inlets and outlets. One pair of inlets and outlets is used for the water to be heated or cooled to flow into and out of the plate heat exchanger, and the other pair of inlets and outlets is used for the heat exchange medium to flow into and out of the plate heat exchanger. Since the liquids flowing into the different inlets are different, the heat exchange medium and water must be completely isolated inside the plate heat exchanger to exchange energy only. Therefore, at the flow channel 1002 that communicates with the inlet and outlet of the water, a sealing ring 0321 is provided between all the through holes 03 adjacent to the second gap 02 to isolate the water flow channel 101 and the heat exchange medium channel 102. Correspondingly, at the flow channel 1002 that communicates with the inlet and outlet of the heat exchange medium, a sealing ring 0321 is provided between all the through holes 03 adjacent to the first gap 01 to isolate the water flow channel 101 and the heat exchange medium channel 102. The above design allows for the formation of completely isolated water flow channels 101 and heat exchange medium channels 102 within the plate heat exchanger.

[0027] Please see Figure 4 , Figure 5The sealing ring portion 0321 protrudes a predetermined length into either the first gap 01 or the second gap 02. At the flow channel 1002, which communicates with the inlet and outlet of the heat exchange medium, the sealing ring portion 0321 protrudes into the second gap 02, reducing the gap of the second gap 02 at the sealing ring portion 0321, thus increasing the flow resistance of the heat exchange medium as it flows through this area. Similarly, at the flow channel 1002, which communicates with the inlet and outlet of the water body, the sealing ring portion 0321 protrudes into the first gap 01, reducing the gap of the first gap 01 at the sealing ring portion 0321, thus increasing the flow resistance of the water flow through this area. Based on the above structure, if the flow rate of the plate heat exchanger remains constant per unit time, the above design will increase the flow velocity of the heat exchange medium and water inside the plate heat exchanger. Since the flow rate of the water and heat exchange medium in the plate heat exchanger remains unchanged per unit time, it means that the flow path of the water and heat exchange medium inside the plate heat exchanger is longer, thereby improving the heat exchange efficiency.

[0028] In another embodiment, such as Figure 6 As shown, the edges of the flow holes 03 at both ends of the sealing ring 0321 protrude a predetermined length into the flow channel 1002. This design can also increase the flow resistance of the heat exchange medium and water when flowing into and out of the plate heat exchanger, and can also produce the technical effect of extending the flow path of water and heat exchange medium inside the plate heat exchanger, thereby improving the heat exchange efficiency of the plate heat exchanger.

[0029] The technical details of each component will be introduced below.

[0030] In some implementations, such as Figure 2 , Figure 3 , Figure 4 As shown, the flow channel 1002 is coaxially aligned with the flow port 1001. The flow channel 1002 is formed by a plurality of through holes 03 arranged coaxially aligned. The edges of two through holes 03 adjacent to the same first gap 01 or second gap 02 are bent in the same or different directions and sealed together to form a sealing ring 0321.

[0031] like Figure 4 , Figure 5 As shown, in practical applications, the aforementioned sealing ring 0321 is typically formed by bending the edge of the through hole 03 during the stamping process of the heat exchange baffle 100. This design simplifies the production process. Furthermore, the integrated structure of the sealing ring 0321 and the heat exchange baffle 100 enhances the sealing performance of the sealing ring 0321. The coaxial alignment of multiple through holes 03 facilitates the formation of the sealing ring 0321 and the sealing connection between the sealing ring 0321 and the edge of the through hole 03.

[0032] In some implementations, such as Figure 6As shown, two through holes 03 adjacent to the same first gap 01 or second gap 02 are defined as a first hole 031 and a second hole 032, respectively. The edge of the first hole 031 protrudes a predetermined length toward the flow channel 1002 to reduce the diameter of the flow channel 1002 at the first hole 031. The edge of the second hole 032 bends toward the first hole 031 to form a sealing ring 0321, which is sealed to the side of the first hole 031. The edge of the first hole 031 allows the diameter of the flow channel 1002 to be reduced at that location. If the flow rate of the plate heat exchanger remains constant per unit time, the above design increases the flow velocity of the heat exchange medium and water inside the plate heat exchanger, which means that the flow path of the water and heat exchange medium inside the plate heat exchanger is longer, thereby improving the heat exchange efficiency. The sealing ring 0321 abutting against the side of the edge of the first hole 031 facilitates welding operations.

[0033] In some implementations, such as Figure 5 As shown, two through holes 03 adjacent to the same first gap 01 or second gap 02 are defined as the first hole 031 and the second hole 032, respectively. The edge of the second hole 032 bends towards the first hole 031 to form a sealing ring 0321. The sealing ring 0321 passes through the second hole 032 and extends a predetermined length towards the first gap 01 or the second gap 02 to reduce the distance between the first gap 01 or the second gap 02 at the sealing ring 0321. When the heat exchange medium flows through the location of the sealing ring 0321, the flow resistance will increase. If the flow rate per unit time of the plate heat exchanger remains constant, the above design will increase the flow velocity of the heat exchange medium and water inside the plate heat exchanger, which means that the flow path of the water and heat exchange medium inside the plate heat exchanger is longer, thereby improving the heat exchange efficiency. While increasing the heat exchange efficiency, the above design also facilitates the alignment of the sealing ring 0321 and the edge of the first hole 031 during the re-welding process, making misalignment less likely.

[0034] In some implementations, such as Figure 5 As shown, the edge of the first hole 031 is bent away from the second hole 032 to form a first ring portion 0311. The inner diameter of the first ring portion 0311 is the same as the outer diameter of the sealing ring portion 0321. This design allows the first ring portion 0311 and the sealing ring portion 0321 to form a tight fitting structure, facilitating the alignment of the sealing ring portion 0321 with the first hole 031. Furthermore, the fitting of the sealing ring portion 0321 and the first ring portion 0311 creates a side-to-side structure, allowing for a more secure and sealed weld.

[0035] In some implementations, such as Figure 4 , Figure 5As shown, the first ring portion 0311 protrudes a predetermined distance into the first gap 01 or the second gap 02. After the outer edge of the heat exchange baffle 100 of the first hole 031 is overlapped and welded with the outer edge of the heat exchange baffle 100 of the second hole 032, the end face of the first ring portion 0311 coincides with the end face of the sealing ring portion 0321 to facilitate welding the end faces of the first ring portion 0311 and the end faces of the sealing ring portion 0321 together.

[0036] In some implementations, such as Figure 5 As shown, a guide structure 04 is stamped on the side of the first ring portion 0311 near the second hole 032 to facilitate the insertion of the sealing ring portion 0321 into the first ring portion 0311. The guide structure 04 can be a rounded corner structure or a chamfered structure, which can help align the sealing ring portion 0321 with the first hole 031 during actual assembly operations, so as to facilitate subsequent welding.

[0037] In other implementations, such as Figure 7 As shown, the edge of the first hole 031 is bent toward the second hole 032 to form a first ring portion 0311. The inner diameter of the first ring portion 0311 is the same as the outer diameter of the sealing ring portion 0321. The axial length of the first ring portion 0311 is the same as the width of the first gap 01 or the second gap 02. The axial length of the sealing ring portion 0321 is ( Figure 7 L2 in the middle is greater than the axial length of the first ring 0311. Figure 7 (L1 in the diagram). When the end of the first ring portion 0311 near the second hole 032 abuts against the bottom of the sealing ring portion 0321, the end of the sealing ring portion 0321 near the first hole 031 passes through the second hole 032 and extends a predetermined length toward the first gap 01 or the second gap 02 to reduce the distance between the first gap 01 or the second gap 02 at the sealing ring portion 0321. Through the above design, in actual assembly operations, the first ring portion 0311 can abut against the bottom of the sealing ring portion 0321, thereby restricting the position of the heat exchange baffle 100, which can maintain the width of the first gap 01 and the second gap 02, and also facilitates the determination of the position of the heat exchange baffle 100 during the assembly process.

[0038] In some implementations, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the diameter of the flow port 1001 is smaller than the diameter of the through hole 03. This design, while ensuring a constant flow rate per unit time, also increases the flow velocity of the water and heat exchange medium inside the heat exchanger, thereby increasing the flow path of the water and heat exchange medium and improving the heat exchange effect of the plate heat exchanger.

[0039] This application also provides a water treatment device, including the above-mentioned plate heat exchanger.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plate heat exchanger, internally provided with a water flow channel (101) and a heat exchange medium channel (102), characterized in that, The plate heat exchanger includes: Multiple heat exchange baffles (100) are stacked sequentially, and a first gap (01) and a second gap (02) are formed between adjacent heat exchange baffles (100). The first gap (01) is used to form the water flow channel (101), and the second gap (02) is used to form the heat exchange medium channel (102). The first gap (01) and the second gap (02) are alternately arranged. The plate heat exchanger is provided with a flow port (1001) on the outside. Each heat exchange baffle (100) is provided with a through hole (03). The multiple through holes (03) form a flow channel (1002) communicating with the flow port (1001). A sealing ring (0321) is formed between the edges of two through holes (03) adjacent to the same first gap (01) or second gap (02). The two axial ends of the sealing ring (0321) are respectively sealed and connected to the edges of the two through holes (03) to close the first gap (01) or the second gap (02). The sealing ring portion (0321) protrudes a predetermined length into the first gap (01) or the second gap (02); and / or The edges of the flow holes (03) at both ends of the sealing ring (0321) protrude toward the flow channel (1002) by a predetermined length.

2. The plate heat exchanger according to claim 1, characterized in that, The flow channel (1002) and the flow port (1001) are aligned coaxially. The edges of two through holes (03) adjacent to the same first gap (01) or second gap (02) are bent in the same or different directions and sealed together to form the sealing ring (0321).

3. The plate heat exchanger according to claim 2, characterized in that, Two through holes (03) adjacent to the same first gap (01) or second gap (02) are defined as a first hole (031) and a second hole (032), respectively. The edge of the first hole (031) protrudes a predetermined length toward the flow channel (1002) to reduce the diameter of the flow channel (1002) at the first hole (031). The edge of the second hole (032) bends toward the first hole (031) to form the sealing ring (0321). The sealing ring (0321) is sealed to the side of the first hole (031).

4. The plate heat exchanger according to claim 2, characterized in that, Two through holes (03) adjacent to the same first gap (01) or second gap (02) are defined as a first hole (031) and a second hole (032), respectively. The edge of the second hole (032) is bent toward the first hole (031) to form the sealing ring portion (0321). The sealing ring portion (0321) passes through the second hole (032) and extends a predetermined length toward the first gap (01) or the second gap (02) to reduce the distance between the first gap (01) or the second gap (02) at the sealing ring portion (0321).

5. The plate heat exchanger according to claim 4, characterized in that, The edge of the first hole (031) bends away from the second hole (032) to form a first ring (0311), and the inner diameter of the first ring (0311) is the same as the outer diameter of the sealing ring (0321).

6. The plate heat exchanger according to claim 5, characterized in that, The first ring portion (0311) protrudes a predetermined distance into the first gap (01) or the second gap (02); When the outer edge of the heat exchange baffle (100) of the first hole (031) is overlapped and welded with the outer edge of the heat exchange baffle (100) of the second hole (032), the end face of the first ring (0311) coincides with the end face of the sealing ring (0321).

7. The plate heat exchanger according to claim 5, characterized in that, The first ring portion (0311) has a guide structure (04) stamped on the side near the second hole (032) to facilitate the insertion of the sealing ring portion (0321) into the first ring portion (0311).

8. The plate heat exchanger according to claim 4, characterized in that, The edge of the first hole (031) is bent toward the second hole (032) to form a first ring (0311). The inner diameter of the first ring (0311) is the same as the outer diameter of the sealing ring (0321). The axial length of the first ring (0311) is the same as the width of the first gap (01) or the second gap (02). The axial length of the sealing ring (0321) is greater than the axial length of the first ring (0311). When the end of the first ring portion (0311) near the second hole (032) abuts against the bottom of the sealing ring portion (0321), the end of the sealing ring portion (0321) near the first hole (031) passes through the second hole (032) and extends a predetermined length toward the first gap (01) or the second gap (02) to reduce the distance between the first gap (01) or the second gap (02) at the sealing ring portion (0321).

9. The plate heat exchanger according to claim 1, characterized in that, The diameter of the flow port (1001) is smaller than the diameter of the through hole (03).

10. A water treatment device, characterized in that, Includes the plate heat exchanger as described in any one of claims 1 to 9.

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