板式换热器

Abstract

本实用新型的板式换热器包括若干沿第一方向层叠设置的板组，相邻的板组之间限定板间流道；各板组均包括设有第一区域的第一板和设有第二区域的第二板；第一区域包括第一基板以及由第一基板沿第一方向朝向远离第二板凸出的凸台部；第二区域包括第二基板以及由第二基板沿第一方向朝向远离第一板凹陷的凹槽部，第一基板和第二基板均设置有角孔；凸台部和凹槽部围成分配流道，分配流道围绕角孔设置；凸台部和凹槽部中的至少一者设置有分配一孔，分配一孔与角孔相连通；凹槽部设置有分配二孔，分配二孔与分配一孔沿周向相错开，分配二孔与板间流道相连通。通过对板式换热器的结构进行改进，提高了换热介质分配的均匀性。

Claims

1. Plate heat exchanger, characterized in that It includes several plate groups stacked along a first direction, with an inter-plate flow channel (6) defined between adjacent plate groups; each plate group includes a first plate (1) having a first region (11) and a second plate (2) having a second region (21); the first region (11) includes a first substrate (111) and a boss (112) protruding from the first substrate (111) along the first direction toward the second plate (2) away from it; The second region (21) includes a second substrate (211) and a recess (212) recessed from the second substrate (211) along the first direction toward the distance from the first plate (1). Both the first substrate (111) and the second substrate (211) are provided with corner holes (5). The boss portion (112) and the groove portion (212) form a distribution channel (3), which is arranged around the corner hole (5); at least one of the boss portion (112) and the groove portion (212) is provided with a distribution hole (41), which is connected to the corner hole (5); The groove portion (212) is provided with two distribution holes (42), which are offset from the first distribution hole (41) in the circumferential direction, and the two distribution holes (42) are connected to the inter-plate flow channel (6).

2. The plate heat exchanger according to claim 1, characterized in that The boss portion (112) includes an inner ring sidewall (112a) near the corner hole (5) and an outer ring sidewall (112b) away from the corner hole (5). The first substrate (111) includes a first plate segment (111a) connected to the inner ring sidewall (112a) and a second plate segment (111b) connected to the outer ring sidewall (112b). The groove portion (212) includes an inner groove sidewall (212a) near the corner hole (5) and an outer groove sidewall (212b) away from the corner hole (5). The second substrate (211) includes a third plate segment (211a) connected to the inner groove sidewall (212a) and a fourth plate segment (211b) connected to the outer groove sidewall (212b). The first plate segment (111a) and the third plate segment (211a) press against each other along the first direction, and the second plate segment (111b) and the fourth plate segment (211b) press against each other along the first direction.

3. A plate heat exchanger according to claim 2, characterized in that The inner ring sidewall (112a) is provided with the distribution hole (41); and / or, the inner ring groove sidewall (212a) is provided with the distribution hole (41).

4. A plate heat exchanger according to claim 3, characterized in that The distribution hole (41) located on the boss portion (112) extends through the first plate segment (111a) to the corner hole (5); and / or, the distribution hole (41) located on the groove portion (212) extends through the third plate segment (211a) to the corner hole (5).

5. A plate heat exchanger according to claim 4, characterized in that The distribution hole (41) located in the first plate segment (111a) and at least a portion of the distribution hole (41) located in the third plate segment (211a) coincide along a first direction.

6. The plate heat exchanger according to claim 4, characterized in that, The distribution hole (41) located in the first plate segment (111a) is circumferentially offset from the distribution hole (41) located in the third plate segment (211a).

7. A plate heat exchanger according to any of the claims 1-6, characterised in that The groove portion (212) includes a groove bottom wall (212c), which is provided with a welding area (212c-2) and an opening area (212c-1); The welding area (212c-2) abuts against the platform (112c) of the boss (112) along the first direction, and the opening area (212c-1) is located on the side of the platform (112c) away from the corner hole (5); the opening area (212c-1) is provided with the two distribution holes (42).

8. A plate heat exchanger according to any of the claims 1-6, characterised in that The first plate (1) has a third region (12) connected to the first region (11), the third region (12) includes a third substrate (121) and a plurality of first guide portions (122) protruding from the third substrate (121) along the first direction toward the second plate (2) away from the same plate group; the platform surface (112c) of the boss portion (112) and the top surface of the first guide portion (122) are located on the same surface.

9. A plate heat exchanger according to any of the claims 1-6, characterised in that The second plate (2) has a fourth region (22) that is in contact with the second region (21). The fourth region (22) includes a fourth substrate (221) and a second guide portion (222) recessed from the fourth substrate (221) toward the first plate (1) away from the same plate group along the first direction. The surface of the groove bottom wall (212c) of the groove portion (212) away from the first plate (1) is located on the same surface as the bottom end surface of the second guide portion (222).

10. A plate heat exchanger according to any of the claims 1-6, characterised in that The circumferential dimension of the distribution hole (41) is less than or equal to 1 / 8 of the circumference of the corner hole (5).

11. A plate heat exchanger according to any of the claims 2-6, characterised in that The bottom end of the inner ring sidewall (112a) is connected to the first plate segment (111a) at a first position (13), and the top end of the inner ring groove sidewall (212a) is connected to the third plate segment (211a) at a second position (23); along the first direction, the first position (13) and the second position (23) are aligned.

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