JPS6136690A - Heat exchanger element - Google Patents

Abstract

PURPOSE:To shorten the length of a gas flowpath to effectively prevent the heat efficiency due to condensed dew-water from lowering by forming each of heat pipes into a flat sectional shape, rectangularly intersecting a long shaft with the gas flowpath and installing a short shaft in parallel to the gas flowpath. CONSTITUTION:A plurality of heat pipes 10, 10,... are disposed so that they rectangularly intersect respective flowpaths, and a plurality of fins 11, 11,... are provided in parallel to the lowpaths around the peripheries of these heat pipes 10, 10,.... The heat pipe 10 has a flat sectional shape which is long in the vertical direction and is thin in the direction of the flowpath, and its upper and lower ends are formed into a sectional semicircular shape. Thus, the width (t) can be made small. As the height (b) of the fin 11 becomes wide, the arrangement interval (l) can be narrowed that much. The length (a) of the heat exchange element 1 can be set considereably short. Even when the moisture contained in a hot air flow is cooled and condensed by the heat pipe 10, and adheres to the surface of the heat pipe as water drops 12, the water drops 12 readily flow downwardly because a side wall 10a is of a rectilinear shape.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a heat exchange element formed by providing fins around a heat pipe.

[Background technology]

In the case of a gas-gas type heat exchanger using a heat exchange element as described above, in order to obtain a high heat exchange efficiency of 5° or more, it is necessary to use multiple heat pipes by rotating them in the fluid flow direction V. need to be placed. In this case, Figure 3 and @4
In a conventional heat exchange element r using cylindrical heat pipes lO' as shown in the figure, the diameter d of each heat pipe 10' in the flow path direction and the interval l between the heat pipes are Since the size of the heat exchanger increases, the length of the heat exchange element in the direction of the fluid flow path increases, resulting in an increase in the size of the heat exchanger. Furthermore, if the flow path is long, the pressure loss of the fluid increases, so a blower fan with a large output is required, and a large amount of noise is generated. Furthermore, if the heat pipe is cylindrical, as shown in Figure 4, the condensed water 12 that has condensed in the high-temperature part does not drain well, and the condensed water that adheres around the heat pipe deteriorates the heat transfer performance of the heat exchange element. I was letting it happen. In the figure, 11' is a fin.

[Object of the invention] This invention was made in view of the above circumstances,
It is an object of the present invention to provide a heat exchange element that has a short length in the direction of a fluid flow path and has good draining properties for condensed water.

[Disclosure of the invention]

That is, the heat exchange element according to this #Jrtc is provided with plate-shaped fins on the outer part of the heat bubble,
A heat exchange element arranged in a gas flow path and configured to exchange heat between gases, wherein the heat vibe is formed in a flat cross-sectional shape, and the long axis of the flat cross-section is aligned with the gas flow path. It is characterized by being installed perpendicular to the channel and with its short axis parallel to the channel.

This will be explained below based on the embodiments shown in the drawings.

FIG. 1 is a perspective view of a heat exchange element according to the present invention, and this heat exchange element 1 is housed inside an air-to-air heat exchanger 2. As shown in FIG. The heat exchanger 2 is divided into two left and right spaces by a partition plate 3, and each space is a hot air flow path 5 and a cold air flow path 6.The heat exchange element 1 is divided into two spaces, left and right, by a partition plate 3, and each space is a hot air flow path 5 and a cold air flow path 6. It is located half inside Road 6. 7. τ is a blower fan that circulates hot air and cold air in opposite directions.

The heat exchange element l includes multiple heat exchange elements (Ibu IQ,
10. ... are arranged perpendicular to each flow path, and around these heat vibrators 10.10, ...,
multiple fins, 11. ... are provided parallel to the flow path. The heat tube 10 has a flat cross-sectional shape that is long in the vertical direction and thin in the direction of the flow path, and the ends of the seven dovetails are formed in a semicircular cross-section.

In this way, since the heat exchange element 1 according to the present invention has a long flat shape in the direction perpendicular to the heat pipe 10Fi flow path, it is different from the conventional cylindrical heat vibrator 10.
As for the cross-sectional shape of the vessel that conveys the same amount of heat as ', the width t in the flow path direction can be made smaller. By the amount that the cross section of the heat nozzle 10 becomes wider in the long axis direction,
The arrangement interval can be narrowed to 1, where heat I<I O. Therefore, the length aF'i of the heat exchange element 1,
It is possible to set the length a' of the conventional heat exchange element 1' to be quite short.

Next, ASZ diagrams (a) and <b) show the state of condensation on the heat vibrator 10, where the moisture contained in the hot air is cooled and condensed by the heat vibrator IUr. , as shown in the figure, there are water droplets 12 on the surface of the heat vibrator lO.
It becomes attached. However, since the side wall 10a, which constitutes most of the outer wall of the heat vibrator 10, is linear, the water droplets 12
Since the water droplets flow downward, there is little decrease in heat transfer efficiency due to water droplets Kj. The condensed water collected at the lower end of the heat vibrator 10 is
Large water droplets fall into a drain (not shown) and are removed.

In addition, since the surface area of the heat twine 1O becomes larger, the amount of water condensation aA becomes larger than that of the conventional round-shaped one, and the amount of heat of condensation generated also increases. Therefore, when considering that heat recovery to cold air <=E body V, the heat exchange efficiency is determined to be suitable for dissolving the liquid.

[Invention V] Effect] The above explanation, S-ra 1 gah Kanayo V (,ko LJ) Original 1
The heat exchange element described above can shorten the length of the gas flow path of a heat exchanger using this heat exchange element, and it is useful for downsizing the blower fan compared to VC. become capable. In addition, it drains condensed water well, so
It can effectively prevent low heat exchange efficiency caused by 1% water.

[Brief explanation of the drawing]

Figure 1 is a perspective view of an example of the heat exchanger heat exchanger 1 according to this invention, Figures 2 (a) and (b) are front views and side sectional views of the main parts, and Figures 1 and 1 are the conventional heat exchanger. A perspective view of the exchange element, and FIGS. 4(a) and 4(b3 are a front view and a side sectional view of the main parts thereof. l...Heat exchange element 2...Heat exchanger 5...
Hot air flow path 6...Cold air flow path 7,7'...Blower fan lO...Heat vibe 11...Fin

Claims (1)

[Claims] (1) A heat exchange element having plate-shaped fins provided on the outer periphery of a heat pipe and arranged in a gas flow path to exchange heat between gases, wherein the heat pipe is flat. A heat exchange element characterized in that it is formed in a cross-sectional shape and installed so that the long axis of the flat cross section is perpendicular to a gas flow path and the short axis is parallel to the flow path.