JPH0373797B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plate-fin type heat exchanger that measures heat exchange by introducing a primary fluid and a secondary fluid into independent fluid passages.

[Conventional technology]

For example, in a conventional plate-fin type heat exchanger used in air conditioners, heat-conducting plates are sandwiched between a spacing member formed into a corrugated shape. It has a structure in which the layers are stacked so that they are offset by 90 degrees. This type is also called a cross-flow type, in which the heating fluid and the fluid to be heated flow across the fluid passages formed by the spacing members. There is also a counter-flow type, in which fluids flow in opposite directions, but the basic structure is almost the same as the former.

[Problem that the invention seeks to solve]

The conventional heat exchanger described above only has two fluid passages to bring the heating fluid and the fluid to be heated into thermal contact. Therefore, for example, the actively heated fluid and the natural or special Structurally, it cannot be used as a fluid to effectively heat or cool a fluid to be heated (also referred to as a secondary fluid) without mixing existing fluids as primary fluids for heating or cooling. Ta.

The present invention has been made in order to solve such conventional problems, and it is also possible to change the state quantities related to the temperature etc. of the secondary fluid by two systems of primary fluids that are independent of each other. The purpose is to obtain a highly usable heat exchanger that can also be used in reverse.

[Means for solving problems]

In the heat exchanger according to the present invention, regular hexagonal heat exchanger plates made of a heat conductive material are sandwiched between passage elements such that a predetermined interval is formed between the heat exchanger plates as a fluid passage. They are stacked in multiple stages so that the direction of the passage between them is displaced in the circumferential direction by 60 degrees for each layer, and three independent passages are constructed in layers.

[Function] In this invention, three mutually independent fluid passages are formed in a layered manner, and the fluids to be heat exchanged can be conducted to each one without mixing. Therefore, changes in state quantities related to the temperature of the secondary fluid can also be measured using two systems of the primary fluid.

[Embodiments of the invention]

The heat exchanger as an embodiment of the present invention shown in FIG. 1 is an air-to-air heat exchanger employed in the air conditioning field, and three fluids to be heat exchanged are
They flow in a manner that intersects with each other by 60 degrees.

This heat exchanger 1 includes rod-shaped passage elements 3, 3 arranged in a straight line or bent in a dogleg shape and arranged at intervals between each of a plurality of regular hexagonal partition plates 2.
A is sandwiched between them to form multiple rows of fluid flow paths in multiple stages, and the arrangement direction of the passage elements 3 and 3A is shifted by approximately 60 degrees in the circumferential direction for each layer in a regular hexagonal shape. It is. The partition plate 2 is made of Japanese paper, etc., which has both heat conductivity and moisture permeability.
It is a regular hexagonal flat plate of about 0.05 mm to 0.2 mm that partitions the fluid to be heat exchanged. As shown in FIG. 2, passage elements 3, 3A made of extrusion molded vinyl chloride or foamed resin, or made of ceramic are adhered (integrated) in rows at predetermined intervals on one side. The heat exchanger 1 is formed into a unit member as shown in FIG. 2, which is a structural unit of the heat exchanger 1. All unit members have the same shape and size, and the entrance and exit ends of the passage 4 formed by the passage elements 3 and 3A are formed on opposite sides of the partition plate 2, and the other four sides of the partition plate 2 are A side wall is formed by the outermost passage element 3A bent in the shape of a letter. Then, these unit members are stacked by displacing the line connecting the entrance and exit ends of the passages 4 by 60 degrees in the circumferential direction for each layer (the number of stacked layers is a multiple of 3), and the unit members are connected. In this case, a heat exchanger 1 having three systems of mutually independent passages 4 is constructed.

This heat exchanger 1 can be used as a main component of an air conditioner as shown in FIG. 3, for example. That is, indoor air is taken in and exhausted to the outside through one passage 4 of the heat exchanger 1, and outdoor air, that is, outside air is taken in and supplied into the room through another passage 4 of the heat exchanger 1. Then, in the passage 4 of the remaining one heat exchanger 1, the passage 4 is
The circulation flow path 5, which forms part of the path, is connected. The circulation channel 5 is provided with a blower for flowing hot or cold air in one direction, as well as a cooling/heating device 6 (which may also have a humidifying function) consisting of a cooler, a heater, etc.

Therefore, the outside air that becomes the secondary air supplied indoors includes the indoor air (which becomes the primary air) taken in for exhaust in the heat exchanger 1, and the air that is further circulated through the circulation flow path 5. (This also becomes primary air), and by connecting the circulation flow path 5, the heat exchanger 1 can be given active heating and cooling abilities. .
The heat exchanger 1, which has three independent passages 4, can separate the outlet for air supply and the inlet for exhaust air in an air conditioner as shown in the figure, thus preventing short circuits between air supply and exhaust. It also has the advantage of simplifying a troublesome configuration.

[Structure of the invention]

As is clear from the above description of the embodiments, the heat exchanger of the present invention has fluid passages that are displaced by 60 degrees in the circumferential direction arranged in layers between regular hexagonal plates made of a heat conductive material. Since it has three independent passages, it is possible to exchange heat between one system of heated fluid and two systems of heating fluid, or vice versa.
Therefore, it is highly usable, as it is possible to provide active heating and cooling capabilities by using a single system of heating fluid, and for example, it is possible to construct a new air conditioner with excellent functionality. It becomes possible.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a heat exchanger as an embodiment of the present invention, FIG. 2 is a plan view showing its unit members,
FIG. 3 is an explanatory diagram showing the configuration of an air conditioner using this heat exchanger. In the figure, 1 is a heat exchanger, 2 is a heat exchanger plate, 3 and 3A are passage elements, and 4 is a fluid passage. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] 1. Regular hexagonal heat exchanger plates made of a heat conductive material are stacked in multiple stages with passage elements sandwiched between them such that a predetermined interval is formed as a fluid passage between the heat exchanger plates. A heat exchanger characterized in that three systems of independent passages are stacked in layers such that the direction of the passages between them is displaced by 60 degrees in the circumferential direction for each layer. 2. The heat exchanger according to claim 1, wherein the heat exchanger plate is made of a material that has both heat conductivity and moisture permeability.