JPH0674870U - Plate heat exchanger - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a plate heat exchanger suitable for treating a highly viscous fluid containing a large amount of solids and fibers. [Structure] By narrowing the width of a fluid flow path to eliminate a contact point between adjacent heat exchange plates in the same flow path and by making a U-turn in the flow path, the width of the heat exchange plate is maintained at the conventional specified width. It was done.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plate heat exchanger used for heat treatment of highly viscous fluid foods containing solids and fibers, such as fruit juice, vegetable juice, soups and dressings.

[0002]

[Prior art]

 Conventionally, in this type of plate heat exchanger, a contact was provided on the wall surface forming the flow path. For this reason, there are problems such as clogging of solids and fibrous materials, catching of solids and fibrous materials, and easy occurrence of charring at contacts. Due to such problems, it cannot be said that it is suitable for the treatment of those having a high viscosity and those containing a large amount of solids and fibers.

[0003]

[Problems to be solved by the device]

 In order to solve the above-mentioned problems, it is effective to narrow the fluid flow passage width and eliminate the contact points. However, in the flow on the heat exchange plate like the conventional plate (one-way flow from top to bottom or bottom to top), the heat exchange plate has an elongated shape and secures a certain heat transfer area per sheet. For this reason, it becomes a very long and slender one (see Fig. 2). If the product becomes very long and slender in this way, there were problems such as inconvenience in maintenance due to handling and height, and restrictions on the height of loading and installation.

It is an object of the present invention to provide a novel plate heat exchanger that solves both the problems of the former and the latter at once.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the plate heat exchanger according to the present invention narrows the width of the fluid passage to eliminate the contact point between adjacent heat exchange plates in the same passage and to make a U-turn in the passage. By doing so, the width of the heat exchange plate was kept at the conventional specified width.

[0006]

【Example】

 In the embodiment of the present invention shown in FIG. 1, the conventional U-shaped heat exchange plate body 1 having a predetermined width is provided with inverted U-shaped flow passages 2 which are continuous with each other at the upper end, and the inlets are provided at both lower ends of the flow passage 2. The liquid introducing hole 3 and the outlet liquid introducing hole 4 are opened. The thick line indicated by reference numeral 5 in the drawing indicates a gasket.

The heat exchange plate main body 1 constitutes a heat exchanger (not shown) by appropriately stacking a large number thereof, and in the stacked state, the gasket 5 is adjacent to the heat exchange plate. It contacts the back surface of the main body 1.

[0008]

[Action]

 In the plate heat exchanger according to the present invention, the flow passage width of the fluid is narrowed to eliminate the contact point between adjacent heat exchange plates in the same flow passage, so that the clogging of solid matter and fibers is prevented. However, the problems such as the catching of solids and fibrous materials, the tendency to cause charring at the contact points, etc. were solved, and the flow path was U-turned to keep the width of the heat exchange plate at the conventional specified width. It is not necessary to increase the height, and it solves problems such as inconvenience of maintenance due to handling and height, and restrictions on the carrying-in and installation height. .

[0009]

[Effect of device]

 Since the present invention is as described above, it has not only the remarkable effect of sufficiently achieving the intended purpose of solving both the problems of the former and the latter but also compatibility with the conventional heat exchange plate. By maintaining the above, it is possible to easily replace only the heat exchange plate when the processing flow is changed, which is extremely useful.

[Brief description of drawings]

FIG. 1 is a front view showing a single heat exchange plate constituting a plate heat exchanger according to the present invention.

FIG. 2 is a front view showing a conventional example.

[Explanation of symbols]

 1 heat exchange plate body 2 flow path 3 liquid guiding hole 4 liquid guiding hole 5 gasket

Claims (1)

[Scope of utility model registration request] 1. The width of a heat exchange plate is made smaller than that of a conventional specified width by narrowing the width of a fluid flow path to eliminate a contact point between adjacent heat exchange plates in the same flow path and making a U-turn of the flow path. A plate heat exchanger characterized by being left as it is.