KR200422753Y1 - Expansion for Plate Type Heat Exchanger - Google Patents

Abstract

The present invention relates to a plate heat exchanger that employs an extension tube having a variable length so that the plate heat exchanger can be disassembled without disassembling the circulation pipe connected to the plate heat exchanger when the heat exchanger is disassembled to clean the plate heat exchanger. The expansion pipe is installed between the circulation pipe connected to the heat exchanger connected to the plate heat exchanger and the circulation pipe, so that when the plate heat exchanger is disassembled, the bolt and nut are removed and the plate body is separated. It is inserted into the tube and the length thereof is shortened to secure a space T2 between the plate body and the plate body. Therefore, the cleaning operation can be performed quickly and conveniently without disassembling the circulation pipes attached to the plate heat exchanger.

Expansion, length control, plate heat exchanger, medium temperature water, district heating, exchanger cleaning

Description

Plate heat exchanger with variable length expansion {Expansion for Plate Type Heat Exchanger}

1 is a heating and hot water circulation diagram of a conventional district heating system,

2 is a conceptual diagram illustrating a conventional compact plate heat exchanger.

3 is a perspective view of an expansion according to the present invention,

4 is a cross-sectional view of the expansion according to the present invention,

Figure 5 is a side view of the plate heat exchanger showing the assembled state of the plate heat exchanger coupled expansion according to the present invention,

FIG. 6 is a side view of the plate heat exchanger illustrating a state in which the expansion length is shortened when the plate heat exchanger is disassembled.

<Description of the symbols for the main parts of the drawings>

100: expansion 200: small diameter tube

220: sealing member 210,310: flange

211,311: Through hole 300: Large diameter extension pipe

301: groove portion P1 to P2: plate body

S: Screw S1: Nut

F: frame

The present invention relates to a plate heat exchanger capable of disassembling a plate heat exchanger when disassembling the plate heat exchanger for cleaning the plate heat exchanger without dismantling a supplier or user side circulation pipe coupled to the plate heat exchanger.

Currently, large-scale residential areas such as new towns and apartments are constructed and operated with district heating systems.

As shown in FIG. 1, the district heating system refers to a system for heating and supplying hot water to a user by collectively producing heavy hot water from a supplier. In the case of the district heating system described above, the heat exchanger assembly 30 is installed in an underground space of an apartment or a building, and the hot water discharged from the supplier 10 into the heat exchanger assembly 30 and the user 20 side (building). Heating water or hot water flowing along the circulation pipes (21 to 24) of the building.

The heat-exchanged heating water and the hot water are distributed and supplied to each household along the circulation pipes 21 to 24 of the user 20 side, and the heating and hot water supply are used. Afterwards it is recycled back to the heat exchanger assembly 30.

As the heat exchanger described above, there are various types, but plate heat exchangers having excellent energy saving and heat exchange efficiency are most frequently used.

Representative plate heat exchangers are described in detail in International Application No. PCT / GB 92/001693 "Plate Type Heat Exchangers" and International Application No. PCT / DK 92/00219 "Multilayer Plates for Plate Type Heat Exchangers" (Domestic Patent Publication No. 10-215129). Is disclosed.

Known plate heat exchangers have small flow paths and holes formed on the surface of the metal plate body, and when the two plate bodies overlap, the holes alternate with the flow paths to form inlet and outlet ports, and circulation pipes are connected to the inlet and outlet ports for heating. Form a circulation line.

The pair of holes is a hole in which the inlet pipe and the outlet pipe to which the hot water is introduced and discharged are connected, and the other pair of holes are the circulation pipes of the warm hot water discharged from the supplier side to the heat exchanger assembly 30. It is a hole to be connected.

Depending on the type of pipe connected to the plate heat exchanger as described above, the plate heat exchanger is used as a heat exchanger for heating water (30A) or when the hot water inlet and discharge pipe is connected to the hot water reheater heat exchanger (30B), for hot water preheating When the inlet pipe and the outlet pipe are connected, it is used as a heat exchanger 30C for hot water preheating.

As described above, the plate heat exchanger functions as a heat exchanger depending on which circulation pipe as shown in FIG. 1 is connected to the plate heat exchanger. However, in a normal heating system, the heat exchanger for heating water (30A), the hot water reheating heat exchanger (30B), and the hot water preheating heat exchanger (30C) must be provided, so that the installation space for the heat exchanger must be sufficiently secured and the construction cost is sufficient. This rises and the parking space becomes relatively narrow or there is a difficulty in securing the parking space. In FIG. 1, reference numeral 11 denotes a heavy hot water discharge line discharged from the supplier 10, and 12 denotes a hot hot water return line returned to the supplier 10.

In order to solve such a problem, as shown in FIG. 2, a bypass plate-like body F3 is installed in one plate heat exchanger to compactly integrate the hot water reheating heat exchanger 30B and the hot water preheating heat exchanger 30C. The plate heat exchanger was developed to reduce the installation space and reduce the construction cost by connecting the circulation pipes to the left and right sides of the frame (F).

That is, the compact plate heat exchanger as shown in FIG. 2 has a hot plate preheating heat exchanger 30C on one side thereof and a hot water reheating heat exchanger on one side of the plate heat exchanger with a bypass plate-like body F3 as the center. 30B, the hot water supply preheated by the hot water preheating heat exchanger is preheated, and then joined to the hot water reheating heat exchanger 30B, thereby integrating two heat exchangers.

The compact plate heat exchanger can significantly reduce the manufacturing cost by reducing the construction cost, and can greatly reduce the installation space, thereby greatly improving the space utilization.

However, although the compact heat exchanger as described above has the advantages as described above, the building bridge regulates construction.

As a background of this regulation, the plate heat exchanger is designed to be cleaned at least once a year in order to save energy because the heat exchange efficiency is lowered due to foreign matters such as scale and green water on the surface of the plate as the use time becomes longer.

Therefore, when disassembling and reassembling the plate heat exchanger for cleaning, the gasket attached to the plate-like body must be pressed more strongly than the pressing force before disassembly in order to keep the watertight state sufficiently. Gap between the pipe) and the connection pipe, so the circulation pipe cannot be fastened to the connection pipe even with bolts and nuts.

For this reason, the Ministry of Construction has regulated the construction of the compact plate heat exchanger even though the compact plate heat exchanger has excellent effect of space utilization and construction cost reduction.

The present invention is devised to solve the problems as described above, an object of the present invention is to disassemble and clean the plate heat exchanger without dismantling the pipe connected to the heat exchanger when disassembling the plate heat exchanger for cleaning the plate heat exchanger To provide a plate heat exchanger employing a variable length expansion.

As an implementation means for achieving a plate heat exchanger employing a length-adjustable expansion extension tube according to the present invention:

In the plate heat exchanger, the circulation pipe is coupled to the left and right sides of the plate heat exchanger assembly,

The variable length of the expansion pipe between the connection pipe and the circulation pipe attached to the plate heat exchanger is characterized in that the plate heat exchanger can be cleaned without disassembling the circulation pipe when disassembling assembly.

As a preferred embodiment of the expansion;

A small diameter extension pipe connected to the connection pipe coupled on the frame of the plate heat exchanger and having an empty interior;

A large-diameter extension pipe which is connected to any one of the supplier-side or user-side circulation pipes and which is coupled to receive the outer diameter of the small-diameter extension pipe and to be movable in the axial direction;

It is achieved by an expansion provided with a sealing member so that the space between the circumferential surface of the small diameter extension tube and the inner diameter of the large diameter extension tube is watertight.

The expansion is meant to include various embodiments configured to stretch in the longitudinal direction thereof.

According to the present invention, by installing an expansion between the connection pipe for connecting the circulation pipe attached to the frame of the plate heat exchanger and the supplier or user side circulation pipe coupled to the connection pipe, the bolt for assembling the plate heat exchanger when disassembling the plate heat exchanger When disassembling and disassembling the nut, the small diameter extension tube is inserted into the large diameter extension tube to provide a space between the plate body and the plate body, so that the circulation pipes attached to the plate heat exchanger can be cleaned without disassembling. Regardless of the change in the gap, the circulation pipe can be firmly fastened to the connection pipe.

Hereinafter, with reference to the accompanying drawings for a plate heat exchanger employing an expansion-controlled expansion according to the present invention as follows.

Referring to Figures 3 to 6, Figure 3 illustrates an example of the expansion for connecting the flow path in response to the change in the distance between the connecting pipe and the circulation pipe according to the present invention, Figure 4 is an expansion according to the present invention A cross-sectional view of the pension is shown.

As can be seen in the figure, the expansion 100 according to the present invention is composed of a small diameter extension pipe 200 and a large diameter extension pipe 300 having different diameters.

The extension pipe 200 on one side of the two extension pipes 200 and 300 can be slidably telescopically moved into the extension pipe 300 having a relatively small diameter. The large diameter extension pipe 300 is provided with two or more grooves 301 and sealing members 220 fitted to the grooves in the inner diameter thereof.

The sealing member 220 serves to seal the gap formed between the circumferential surface of the small diameter extension tube 200 and the inner diameter of the large diameter extension tube 300 so that water flowing along the inside does not leak out.

At the ends of the small diameter extension pipe 200 and the large diameter extension pipe 300, flanges 210 and 310 are formed with diameters larger than their outer diameters, and through holes 211 are formed on the flanges 210 and 310 surfaces. 311 are arranged. The through holes 211 and 311 fasten the above expansion by fastening the flanges of the extension pipe for connecting the supplier or the user side circulation pipe to the frame F of the plate heat exchanger with bolts and nuts.

The decomposition of the plate heat exchanger employing the expansion as described above will be described.

5 and 6, a side view of the plate heat exchanger illustrating a state in which the expansion is assembled in the compact plate heat exchanger in accordance with the present invention is shown in Fig. A side view illustrating the length change of the pension is shown.

In the plate heat exchanger according to the present invention to loosen the screw (S) and nut (S1) fastened so that the plate-shaped body (P1 ~ P2) located between the two sides of the frame (F) to be spaced apart from the plate (F) When moved, the small diameter extension pipe 200 slides into the large diameter extension pipe 300 and its length is shortened.

The plate-shaped body (P1 ~ P2) and the frame (F) is provided with a slide groove (F2) is assembled to be slid to the hanger 400 for supporting the plate heat exchanger can move from side to side in the hanger (400).

Thus, the space T2 is formed between plate-shaped objects P1-P2 and the frame F by the length shortened. The space T2 can move the plate body in the range of its width. Therefore, the plate-shaped bodies P1 to P2 movably coupled to the hanger 400 are sequentially separated to clean the surface of the plate-shaped bodies, and the plate-shaped bodies are assembled in the reverse order of disassembly.

In the drawings, reference numeral T1 denotes the position of the circulating pipe coupled when the plate heat exchanger is assembled. As can be seen in FIGS. 5 and 6, the length of T1 does not change, but it can be seen that a space is provided by the width of T2. Therefore, the plate-like body can be cleaned through the space.

Of course, when reassembling the disassembled plate heat exchanger, the expansion length is extended or contracted without being affected by the gap between the circulation pipe and the connection pipe, and thus does not affect the fastening and watertightness of the circulation pipe.

The expansion is described as being coupled to the connection pipe, but this is a typical plate heat exchanger is provided with a connection pipe to illustrate the connection of the expansion pipe connected to the expansion pipe and the end of the connection pipe for understanding, but the connection pipe Omitting the assembly directly to the frame of the plate heat exchanger has the same effect.

As described above, the present invention according to the present invention can decompose and clean the plate heat exchanger without dismantling the circulation pipe since only the plate body can be disassembled without the need to disassemble the circulation pipe. Therefore, the present invention can fundamentally solve the problems caused by the compact plate heat exchanger regulated by the Ministry of Land, Infrastructure, and Transport (CFA), which significantly lowers the construction cost and manufacturing cost and increases the utilization of the installation space. Construction is possible.

Embodiments of the variable expansion exemplified in the present invention are described only for better understanding, and those skilled in the art through the contents described in the present specification may vary the length between the connection pipe and the circulation pipe. Various expansions can be installed, but such modifications and applications are within the true scope of the technical concept intended by the inventors and the scope of the utility model registration claims defined below, unless the configuration is difficult and the significant effects are recognized. It is included in advance.

Claims (2)

In the plate heat exchanger in which the supplier or user side circulation pipes are coupled to the left and right sides of the plate heat exchanger assembly, A small diameter extension pipe connected to the connection pipe coupled on the frame of the plate heat exchanger; A large diameter extension tube connected to the circulation pipe and coupled to receive the outer diameter of the small diameter extension tube and to be movable in the axial direction; And a plate-type heat exchanger employing a variable length expansion member configured to seal between the circumferential surface of the small diameter extension tube and the inner diameter of the large diameter extension tube. The plate heat exchanger according to claim 1, wherein either one of the small diameter and the large diameter extension pipe is directly connected to the plate heat exchanger.

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