JPS5919912Y2 - composite heat exchanger - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a composite heat exchanger used for air conditioning equipment and other industrial purposes.

Conventionally, when performing heat exchange between three fluids such as water, heat medium, and air by combining any two fluids, a heat exchanger for each combination is required, resulting in an enormous scale. It required a large installation space.

The present invention was devised to eliminate such drawbacks, and is capable of handling any two of the three fluids using a single heat exchanger.
By combining fluids to enable heat exchange,
The present invention aims to provide a heat exchanger that can perform composite heat exchange between three fluids without increasing the size of the heat exchanger.

The structure of the present invention will be explained with reference to an embodiment shown in the drawings. Reference numeral 1 denotes a shell of a heat exchanger. Conduits 2 and 3 are connected to both ends of the shell 1. The fluid flowing in from the conduit 2 is a heat medium typified by fluorocarbon.

The fluorocarbon f passes through the shell 1 and flows out from a conduit 3 on the outlet side, and fins 4 made of, for example, a large number of square heat transfer plates are formed on the outer periphery of the shell 1. A blower fan (not shown) can blow cold or hot air such as outside air.

Reference numeral 5 denotes a heat transfer tube installed inside the shell 1, and conduits 6 and 7 are connected to both ends of the heat transfer tube 5. From the conduit 6 on the inlet side, solar heat collected water and underground water are supplied. The heat source receives water such as hot water and cold water for various circulation purposes.

The water W passes through the heat transfer tube 5 and flows out from the conduit 7 on the outlet side, so that heat can be exchanged within the thoracotomy 1.

Reference numeral 8 denotes a branch pipe branched from the water W conduit 6, and the branch pipe 8 extends through a plurality of the fins 4 so as to be in contact with each other, and its end is connected to the conduit 7. They are connected to form a switching pipe.

9 is a three-way valve provided at a branch of the conduit 6;
By switching the direction valve 9, it is possible to switch between a state in which the water W flows through the conduit 6, a state in which the water W flows in the branch pipe 8, and a state in which the water W does not flow.

Note that it is preferable to provide a check valve or the like at the confluence point of the conduit 7 and the branch pipe 8 so as to interlock it with the three-way valve 9.

Next, the operation of the present invention configured in a diagonal manner will be explained.

To exchange heat between the fluorocarbon f and the air a, the three-way valve 9 is operated to stop the water W from flowing into the conduit 6 and the branch pipe 8, and the fluorocarbon f is allowed to flow into the body 1, and then the blower ( ) is activated to blow air a to the fins 4, heat exchange between the fluorocarbon f and the air a takes place via the fins 4, and the fluorocarbon f is heated or cooled in the shell 1, and the conduit 3
It is something that flows out more.

At this time, since the outflow of the water W to the conduit 6 and the branch pipe 8 is stopped, heat exchange between the water W and the fluorocarbon f and between the water W and the air a does not take place.

In addition, when performing heat exchange between Freon f and water W,
By operating the three-way valve 9 to allow water W to flow from the conduit 6 to the heat exchanger tube 5 and at the same time to allow the fleon f to flow through the body 1, the fleon f and water will flow through the flow path surface of the heat exchanger tube 5. Heat exchange is performed by counterflow with W.

In this case, the blower (not shown) is stopped to stop blowing the air a to the fins 4 to prevent heat loss due to heat exchange between the freon f and the air a in the fins 4.

Furthermore, in performing heat exchange between water W and air a,
By operating the three-way valve 9 to allow water W to flow through the branch pipe 8 and stopping the flow of freon f to the shell 1, water W and air can flow through the fins 4 surrounding the branch pipe 8. heat exchange with a.

In this case, since the flow of the fluorocarbon f to the shell 1 is stopped, heat exchange between the fluorocarbon f and the air a and between the fluorocarbon f and the water W does not take place.

In summary, the present invention provides a heat exchanger between two fluids formed by further inserting a conduit inside the conduit, in which fins are formed on the outer periphery of the heat exchanger, and the fins are formed on the inner conduit. Since the intervening conduit is branched and a three-way valve is provided at the branched part of the conduit, a single fin can perform heat dissipation for two types of fluids, and the three-way valve Since it is possible to change the fluid flow path and stop the flow of the fluid, it is possible to perform heat exchange between three fluids by any combination of two fluids with a single device, and it is possible to perform composite heat exchange between three fluids. Since the device can be configured extremely compactly and can be used with various fluids, it can be applied not only to the air conditioning equipment described above but also to a wide range of industrial applications, and its practical value is enormous.

[Brief explanation of the drawing]

The drawings show an embodiment of the composite heat exchanger according to the present invention, in which FIG. 1 is an overall perspective view, and FIG. 2 is an explanatory longitudinal sectional side view. In the figure, 1 is a shell, 4 is a fin, 5 is a heat exchanger, 8 is a branch pipe,
9 is a three-way valve, and 2, 3, and 6.7 are conduits.

Claims (1)

[Scope of utility model registration request] In a heat exchanger between two fluids formed by further inserting a conduit inside the conduit, fins are formed on the outer periphery of the heat exchanger, and the conduit interposed between the fins is branched into the inner conduit. A composite heat exchanger further comprising a three-way valve provided at a branch portion of the conduit.