JP2514510Y2 - Plate heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a plate heat exchanger.

[Conventional technology]

In general, a plate heat exchanger has a structure as shown in FIG.
A plate-shaped fixed frame (1) and a prismatic support (2) are erected parallel to each other on the floor surface, and the fixed frame (1) and the support (2) are provided above and below, respectively. The guide bar (3a) and the lower guide bar (3b) are laid horizontally and parallel to each other.
After arranging a predetermined number of heat transfer plates (4) (4) ... in a stack along the longitudinal direction between (3b), these heat transfer plates (4) (4) ... It has a structure in which a plurality of peripheral portions are clamped and fixed by bolts between a plate-shaped moving frame (5) slidably supported by (3b) and the fixed frame (1).

[Problems to be solved by the device]

The heat transfer plates (4) (4) ...
The upper guide bar (3a) is suspended via a hanger (6), and the heat transfer plate (4) is suspended in the upper guide bar (3a).
(4) ... is centered, and there is almost no horizontal displacement.

However, since the lower guide bar (3b) does not have a centering function, the gap (l) between the cutouts (7) of the heat transfer plates (4) (4) ... And the lower guide bar (3b). Only when assembled, the heat transfer plates (4), (4)… shift to the left and right.

As described above, when the heat transfer plates (4), (4) ... Are displaced from each other, as shown in FIG. 5, the gasket (8) is moved.
The sealing surface of (8) ... is misaligned, the seal becomes unstable and reliability is reduced, and the heat transfer plates (4), (4) ...
Since the contact points between them also deviate from each other, there is a problem that the breakdown voltage is lowered.

The present invention has been proposed in view of the above problems of the prior art, and an object thereof is to prevent lateral displacement of the heat transfer plate to improve reliability of the seal and prevent deterioration of pressure resistance. It is intended to provide a plate heat exchanger.

[Means for solving the problem]

In order to achieve the above object, the present invention has an upper guide bar and a lower guide bar which are horizontally and parallelly provided between a fixed frame and a support, and which are supported and engaged with these guide bars. In a plate heat exchanger with a structure in which a predetermined number of heat transfer plates are stacked and fixed by a moving frame and a fixed frame, parallel to the guide bar at the lower part of one side edge of the heat transfer plate stack array. Different positioning bars are arranged so that they can come into contact with and separate from each other, and the positioning bar presses the lower part of one side edge of the heat transfer plate, abuts the lower guide bar in the notch, and suspends it with the upper guide bar. The three heat transfer plates are simultaneously positioned by the three points.

[Action]

A positioning bar is arranged under the one side edge of the heat transfer plate so as to be able to come into contact with and separate from the one side edge of the heat transfer plate. A plurality of heat transfer plates are positioned at the same time because they are supported by three points, that is, the contact points and the suspended support points by the upper guide bar. Therefore, the lateral displacement of the heat transfer plate is prevented.

〔Example〕

FIG. 1 is an enlarged front view of an essential part of a plate heat exchanger showing a first embodiment of the present invention, and (9c) is an oval or oblong shape and a positioning bar configured to rotate eccentrically. is there. By arranging this positioning bar (9c) rotatably near the lower part of one side edge of the heat transfer plate (4),
It is provided so that it can be contacted and separated.

In this case, the positioning bar (9c) is supported as follows, for example. Both ends of the positioning bar have a circular cross section, and a handle and a detent spring mechanism are provided at one end thereof so that the fixed frame (1) and the support (2) shown in FIG. However, other configurations can be employed.

FIG. 2 is an enlarged front view of an essential part of a plate heat exchanger showing a second embodiment of the present invention, in which a positioning bar (9d) movable in the left-right direction is provided on the lower side of one side edge of the heat transfer plate (4). It is provided so that it can come into contact with and come out of proximity. The support structure of the positioning bar (9d) is the same as that of the first embodiment.

In the operation mode of the above-mentioned embodiment, the heat transfer plate (4) is positioned at three points by rotating the positioning bar (9c) by 90 ° in the first embodiment and the positioning bar in the second embodiment. The heat transfer plate (4) is positioned at three points by translating the (9d) in the left-right direction.

The above three points are the points of suspension to the upper guide bar (3a),
It refers to a contact point between two points or one point of the positioning guide bars (9c) and (9d) and the lower guide bar (3b).

In the present invention, the rotation angle of the positioning bar (9c) is
The angle of contact with the plate (4) is not limited to 90 degrees, and may be any angle.

[Effect of device]

According to the present invention, the lateral displacement of the heat transfer plate can be prevented by the positioning bar, which is a simple means, and the gasket sealing surface and the plate contacting surface can be aligned so that the sealing performance and pressure resistance are reliable. There is an advantage that can be improved.

[Brief description of drawings]

FIG. 1 is an enlarged front view of an essential part of a plate heat exchanger showing a first embodiment of the present invention, FIG. 2 is an enlarged front view of an essential part of a second embodiment, and FIG. 3 is a conventional plate heat exchanger. Side view of the container, No. 4
Fig. 4 is a front view of a conventional plate heat exchanger, and Fig. 5 is a front view.
It is a partial expanded sectional view of the XX line of a figure. (1) …… Fixed frame, (2) …… Support, (3a)
…… Upper guide bar, (3b) …… Lower guide bar,
(4) …… heat transfer plate, (5) …… moving frame,
(6) …… Hanger, (8) …… Gasket, (9c)
(9d) …… Positioning bar.

Claims (2)

(57) [Scope of utility model registration request] 1. An upper and lower guide bar that is horizontally and parallelly provided between a fixed frame and a support, is suspended and supported by an upper guide bar, and has a cutout portion engaged with a lower guide bar. In a plate heat exchanger having a structure in which a predetermined number of heat transfer plates are stacked and fixed in a state of being sandwiched between a moving frame and a fixed frame, a guide bar is provided at a lower portion of one side edge of the stacked array of heat transfer plates. Parallel positioning bars are arranged so that they can come into contact with and separate from each other, and the positioning bar presses the lower part of one side edge of the heat transfer plate, the contact point of the lower guide bar with the notch part by this pressing, and the suspension by the upper guide bar. A plate heat exchanger characterized in that a plurality of heat transfer plates are positioned at the same time by three points of support points. 2. The positioning bar is formed in an oval or elliptical shape, and is eccentrically rotated to press the lower part of one side edge of the heat transfer plate by the oval or oblong major axis portion. The plate heat exchanger according to claim 1, wherein the utility model is registered.