JPH053902Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a plate heat exchanger, particularly its heat insulating structure.

Conventional technology Multiple heat transfer plates are stacked together with gaskets interposed between the stand frame and the end frame.
Plate heat exchangers that form alternating flow paths for two types of heat exchange media are used in various industrial fields.

In the above-mentioned plate heat exchanger, steam, hot water, etc. are used as a heating medium for the liquid to be treated.
Also, brine, chiller water, etc. are used as a cooling medium. These heating or cooling media 1
The liquid to be treated 2 heated or cooled by heat exchange flows into each of the alternately arranged flow channels and exchanges heat by heating or cooling.

Problems to be Solved by the Invention In the above-mentioned plate heat exchanger, the number of alternate passages for the heat exchange medium is selected according to its heat exchange capacity. That is, depending on the heat exchange capacity of the heat exchanger, as shown in FIG. The flow path configuration is selected such that either the flow path A or the flow path B is larger than the other by one flow path. When _a conventional plate heat exchanger adopts the flow path configuration illustrated in _FIG . be heated to a high temperature or cooled to a low temperature. In this case, the heat loss due to heat radiation or heat absorption of the heat transfer plates _3S and _3E is reduced,
In addition, for the purpose of preventing heat dissipation to the surrounding environment,
Countermeasures have been taken, such as surrounding the main body of the plate heat exchanger with a heat insulating material, but each method is disadvantageous in terms of cost. Furthermore, in terms of operability during disassembly and inspection, considerable labor is required due to the heavy weight and the installation and removal of the heat insulating material.

The main purpose of the present invention is to provide a solution to the problems observed in conventional plate heat exchangers, especially their insulation structure.

Means for Solving the Problems As a means for solving the above problems, the present invention is to stack a plurality of heat transfer plates between the stand frame and the end frame with gaskets in between so that two types of heat exchange media can flow alternately. In the plate heat exchanger formed by forming a channel, a heat insulating plate made of synthetic resin is interposed between the stand frame and end frame and a heat transfer plate adjacent thereto. It provides:

Function In a heat exchanger formed by a stand frame and an end frame and a heat transfer plate laminated via a gasket, a synthetic resin material is placed between the stand frame and end frame and the heat transfer plate. By interposing insulation plates, the heat loss of the plate heat exchanger is reduced.

Embodiment FIG. 1 is a schematic sectional view of a plate heat exchanger showing a specific example of the present invention, and FIG. 1a is an exploded perspective view showing the specific example.

In the plate type heat exchanger, a plurality of (1 to n) heat transfer plates P ₁ to _{P o} are stacked between a stand frame S and an end frame E with gaskets 4 interposed therebetween depending on the heat exchange capacity. Therefore, two types of heat exchange media, namely the heating medium or cooling medium 1 and the liquid to be treated 2, flow separately in alternate channels A and B.
It consists of Therefore, the above stand frame S
Insulating plates 11 _S and 11 _E made of synthetic resin, for example polyester resin, are interposed between end frame E and heat transfer plate P ₁ or P _o adjacent thereto.

Since the device of the present invention is constructed as described above,
A heating medium or a cooling medium 1 flowing through a flow path A,
When heat exchange is performed with _the liquid to be treated 2 flowing through the flow path B, the above _- mentioned insulation plate 1
_1S and _11E function as heat radiation or heat absorption blocking members, contributing to reducing heat loss and preventing heat radiation to the surrounding environment. The heat insulating plates 11 _S and 11 _E are
It can be selected from known synthetic resin materials having a heat insulating effect, such as polyester, polypropylene, ABS resin, etc., depending on the thermal properties.
In addition, in this embodiment, a heat insulating plate 1 is provided on the stand frame S side and the end frame E side, respectively.
1 _S and 11 _E are arranged, but the heat insulating plate can also be arranged on either the stand frame S side or the end frame E side depending on the arrangement form of the alternating flow paths.

Effects of the invention As can be understood from the above explanation, in a plate heat exchanger formed by a stand frame, an end frame, and heat transfer plates laminated via a gasket, the stand frame and end frame and the heat transfer plate,
By disposing a heat insulating plate made of synthetic resin, it is possible to reduce the heat loss of the plate heat exchanger due to heat radiation or heat absorption, and to suppress the radiation of heat to the surrounding environment. In addition to this, the device of the present invention has an extremely simple structure;
A heat exchange system with low heat loss can be constructed by only partially modifying a conventional plate heat exchanger.

The present invention reduces the weight of the stand frame and end frame, eliminates the need for heat insulating material, and reduces costs. At the same time, it has a remarkable effect on improving the operability of the plate heat exchanger.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of a plate heat exchanger showing a specific example of the present invention, and FIG. 1a is an exploded perspective view of the specific example. FIG. 2 is a schematic cross-sectional view of a conventional plate heat exchanger. S... Stand frame, E... End frame, P ₁ , P ₂ ... P _o ... Heat transfer plate, 1... Heating medium or cooling medium, 2... Liquid to be treated, A,
B... Alternate flow path, 4... Gasket, 11 _S , 1
1 _E ...Insulation plate.

Claims (1)

[Scope of utility model registration request] In a plate heat exchanger in which a plurality of heat transfer plates are stacked between a stand frame and an end frame via gaskets to form alternating flow paths for two types of heat exchange media, the stand frame and A plate heat exchanger characterized in that a heat insulating plate made of synthetic resin is interposed between an end frame and a heat transfer plate adjacent thereto.