JPH0590180U - Plate heat exchanger - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the deflection of the guide bar due to the weight of the heat transfer plate or partition plate as much as possible. [Structure] A large number of heat transfer plates (14) are superposed in a state of being suspended and supported by guide bars (12) and (13), and the superposed heat transfer plates (14) are regarded as one section.
A plurality of sections (S ₁₁ ) to (S ₁₄ ) are separated by a partition plate (C ₁₂ ).
(C ₁₃ ), a fixed partition plate (C ₁₁ ) is provided in the substantially central part of the section group, and sections (S ₁₁ ) to (S ₁₁ ) to (S ₁₁ ) are provided on both sides of the fixed partition plate (C ₁₁ ). ₁₄ )
That is, a large number of heat transfer plates (14) constituting the above are arranged, and the substantially central portion of the section group is supported by the fixed partition plate (C ₁₁ ).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plate heat exchanger, and more particularly to a plate heat exchanger having a heating / cooling section group in which a plurality of sections obtained by superposing a large number of heat transfer plates are connected in series.

[0002]

[Prior Art]

For example, there is a plate heat exchanger used when heat-sterilizing a treatment liquid as shown in FIG. The plate heat exchanger shown in the figure has a structure in which a large number of heat transfer plates (1) constitutes one section and a plurality of sections (S ₁ ) to (S ₄ ) are connected in series. Specifically, a plate-shaped fixed frame (2) and a prismatic support (3) are erected on the floor parallel to each other, and the upper and lower parts are provided between the fixed frame (2) and the support (3). The guide bars (4) and (5) are placed horizontally and in parallel. A number of heat transfer plates (1) are suspended and supported on the upper and lower guide bars (4) and (5) between the fixed frame (2) and the support (3), and are superposed. As one section, a plurality of (four in the figure) sections (S ₁ ) to (S ₄ ) are connected continuously along the upper and lower guide bars (4) and (5), and each section (S ₁ ) to (). Partition plates (C ₁ ) to (C ₃ ) are provided between S ₄ ). Further, the upper and lower guide bar (4) (5) mounted slidably movable frame (6) arranged in parallel with respect to the fixed frame (2), the arrangement section (S ₁₎ ~ (S ₄₎ A large number of heat transfer plates (1) and partition plates (C ₁ ) to (C ₃ ) are sandwiched between the fixed frame (2) and the moving frame (6), and the space between the two frames (2) and (6). It is fastened and fixed by tightening bolts (not shown) installed on the.

In the above plate heat exchanger, a medium flow path is formed between the heat transfer plates (1) that are superposed on each other via a gasket (not shown), and the sections (S ₁ ) to (S ₄ ) Between the medium flow paths through the partition plates (C ₁ ) to (C ₃ ), and the heat exchange medium flows through the medium flow path to the adjacent medium flow paths. Heat is exchanged with the medium to perform predetermined heating and cooling.

[0004]

[Problems to be solved by the device]

By the way, in the conventional plate heat exchanger, the upper and lower guide bars (4) and (5) are horizontally mounted between the fixed frame (2) and the support (3), and the upper and lower guide bars (4) and (5) are mounted on the upper and lower guide bars. Since a large number of heat transfer plates (1), partition plates (C ₁ ) to (C ₃ ) and a moving frame (6) that constitute the sections (S ₁ ) to (S ₄ ) are suspended and supported, they are suspended. When the number of sheets is large, the weight supported by the upper and lower guide bars (4) and (5) becomes very large, so that the upper and lower guide bars (4) and (5) are bent. As a result, the weight of the heat transfer plate (1) and partition plates (C ₁ ) to (C ₃ ) that can be suspended and supported by the upper and lower guide bars (4) and (5) is limited, and when the weight becomes too large. Cannot be constructed with a single plate heat exchanger.

Therefore, for example, in the case of having four sections (S ₁ ) to (S ₄ ), as shown in FIG. 5, two sections (S ₁ ) (S ₂ ) and (S ₃ ) (S ₄ ) Two plate type heat exchangers having a) were installed, and a pipe [not shown] was connected between both plate type heat exchangers. However, connecting two plate heat exchangers by piping in this way requires a large installation space and requires wasteful piping, which makes it difficult to effectively use the installation space. There was a problem that it also needed work.

Therefore, the present invention has been proposed in view of the above problems, and an object thereof is to provide a guide bar by the weight of a heat transfer plate or a partition plate constituting a section even if the weight increases. It is intended to provide a plate heat exchanger capable of suppressing the bending of the plate.

[0007]

[Means for Solving the Problems]

 A technical means for achieving the above object in the present invention is to superpose a plurality of heat transfer plates in a state of being suspended and supported by a guide bar, and to form a plurality of the heat transfer plates as one section. In a section in which sections are connected through a partition plate, a fixed partition plate is provided in the substantially central portion of the section group, and a large number of heat transfer plates constituting the section are arranged on both sides of the fixed partition plate. That is.

[0008]

[Action]

 In the plate heat exchanger according to the present invention, a fixed partition plate is provided substantially in the center of the section group, and a large number of heat transfer plates constituting the section are arranged on both sides of the fixed partition plate, whereby the section group is formed. Since it is possible to support the substantially central portion of the above with a fixed partition plate, it is possible to connect a plurality of sections in succession with one plate heat exchanger without bending the guide bar.

[0009]

【Example】

 An embodiment of the plate heat exchanger according to the present invention will be described with reference to FIGS. It should be noted that the following example is a case where it is applied to one having four sections for comparison with the conventional example of FIG. 4, but the number of sections is arbitrary.

A feature of the present invention is that, as shown in FIG. 1, a fixed partition plate (C ₁₁ ) Is provided.

Specifically, the fixed partition plate (C₁₁) Is erected on the floor and its fixed partition plate (C ₁₁ ), Two supports (11) are erected on the floor parallel to each other on both the left and right sides, and the fixed partition plate (C₁₁The upper and lower guide bars (12, 13) are laid horizontally and in parallel with the support (11) on both the left and right sides of (). Fixed partition plate (C₁₁) And the support (11) between the upper and lower guide bars (12) and (13) with a large number of heat transfer plates (14) suspended and supported along the longitudinal direction thereof to form a single section. , Multiple [in the figure, fixed partition plate (C₁₁) Section on each of the left and right sides]₁₁) ~ (S₁₄) Are installed in series. Each section (S₁₁) ~ (S₁₄) [In the figure, fixed partition plate (C₁₁) Two sections (S₁₁) And (S₁₂), (S₁₃) And (S₁₄ Between)] to the partition plate (C₁₂) (C₁₃) Is installed. Each section (S₁₁) ~ (S₁₄ ), A medium flow path is formed between the heat transfer plates (14) superposed by a gasket (not shown), and each section (S₁₁) ~ (S₁₄) Is a fixed partition plate (C₁₁) And partition plate (C₁₂) (C₁₃) It communicates with the structure described later. In addition, a fixed partition plate (C₁₁), The movable frame (15) is slidably mounted on the upper and lower guide bars (12) and (13) respectively, and the fixed partition plate (C₁₁) Parallel to each section (S₁₁) ~ (S₁₄), A large number of heat transfer plates (14) and partition plates (C₁₂) (C₁₃) And a fixed partition plate (C₁₁) And the movable frame (15), and fixed partition plate (C₁₁) And the moving frame (15), it is fixed by tightening bolts (not shown).

The fixed partition plate (C ₁₁ ) [or partition plate (C ₁₂ ) (C ₁₃ )] forms an end face opening (16) open to the end face as shown in FIG. 2 (a). It has a bent-shaped lead-out inlet pipe (N ₄ ) (N ₁₂ ) which is bent from the end face opening (16) toward the side surface and which has a side surface opening (17) opened on the side surface. The end face opening (16) communicates with the medium flow path formed by the heat transfer plates (14) of the sections (S ₁₁ ) to (S ₁₄ ) in contact with it. As a result, the heat transfer plates (14) are present on both the left and right sides of the fixed partition plate (C ₁₁ ) [or partition plate (C ₁₂ ) (C ₁₃ )], so that only the compressive load is applied. Does not require a large strength for the fixed partition plate (C ₁₁ ) [or partition plates (C ₁₂ ) (C ₁₃ )]. The moving frame (15) is provided with lead-in / out pipes (N ₈ ) (N ₉ ) having end face openings (18) (19) open at both end faces thereof as shown in FIG. 2 (b). Have.

When the treatment liquid is heat-sterilized by the plate heat exchanger, heating / cooling is performed in a flow as shown in FIG.

That is, the treatment liquid is caused to flow from the introduction pipe (N ₅ ) of the fixed partition plate (C ₁₁ ) into the section (S ₁₂ ), and the derivation inlet pipe (N ₆ ) (N ₇ ) of the partition plate (C ₁₂ ) is supplied. After that, it is made to flow into the section (S ₁₁ ). Here, after the treatment liquid in the section (S ₁₁ ) is heated to the required temperature by the hot water flowing into the section (S ₁₁ ) from the introduction pipe (N ₉ ) of the moving frame (15), the switching valve (V ₁ ) To flow into the section (S ₁₂ ) from the introduction pipe (N ₁₁ ) of the partition plate (C ₁₂ ) and preheat the treatment liquid flowing through the adjacent medium flow path in that section (S ₁₂ ) to fix the fixed partition wall. is flowed to the plate (C ₁₁₎ derived immigration (N ₁₂₎ (N ₁₃₎ through section emission (S _13), the inflow inlet of the partition plate (C ₁₃₎ from (N ₃₎ in the section (S ₁₃₎ The processing liquid is cooled in the section (S ₁₃ ) by the cooling water thus generated. If the treatment liquid does not rise to a predetermined temperature in the section (S ₁₁ ), it flows into the section (S ₁₄ ) from the introduction pipe (N ₁₅ ) of the partition plate (C ₁₃ ) through the switching valve (V ₁ ). By the way, the treatment liquid in the section (S ₁₄ ) is cooled by the cooling water that has flowed into the section (S ₁₄ ) from the introduction pipe (N ₁ ) of the moving frame (15), and then the discharge pipe (N ₁₆ ) It has been leaked.

[0015] In the plate heat exchanger of the present invention that performs heating / cooling in a plurality of sections (S ₁₁ ) to (S ₁₄ ), the substantially central portion of the section group is supported by the fixed partition plate (C ₁₁ ) with respect to the floor surface. since the upper and lower portion guide bar (12) suspended (13) supported by the heat transfer plates (14) and the partition plate (C ₁₂₎ with the weight of (C ₁₃₎ top and bottom guide bar (12) (13) Bending is reduced as much as possible.

[0016]

[Effect of the device]

 According to the plate heat exchanger of the present invention, since the substantially central portion of the section group is supported by the fixed partition plate, the heat transfer plate and the partition plate are suspended and supported by the guide bar. Since the deflection of the guide bar is reduced as much as possible even if a plurality of sections are arranged in a row, a single plate heat exchanger having a plurality of sections made up of a large number of heat transfer plates and a partition plate is provided. Therefore, it is easy to use the installation space effectively and the piping work can be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a plate heat exchanger according to the present invention.

2 (a) shows the fixed partition plate and the partition plate of FIG.
FIG. 1B is a cross-sectional view of the moving frame of FIG. 1 when viewed from above.

FIG. 3 is a flow chart showing the flow of processing liquid in the plate heat exchanger of FIG.

FIG. 4 is a front view showing a conventional example of a plate heat exchanger.

FIG. 5 is a front view showing another conventional plate-type heat exchanger.

[Explanation of symbols]

12 Guide bar 13 Guide bar 14 Heat transfer plate C ₁₁ Fixed partition plate C ₁₂ Partition plate C ₁₃ Partition plate S ₁₁ section S ₁₂ section S ₁₃ section S ₁₄ section

Claims (1)

[Scope of utility model registration request] 1. A plurality of heat transfer plates superposed on a guide bar in a suspended state, and superposed, and the superposed heat transfer plates constitute one section, and a plurality of sections are connected in series through a partition plate. 2. A plate heat exchanger according to claim 1, wherein a fixed partition plate is provided substantially in the center of the section group, and a large number of heat transfer plates constituting the section are arranged on both sides of the fixed partition plate.