JPH0435750Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention is a heat exchanger that constitutes an evaporator of a refrigeration cycle used in compressed air dehumidifiers, coolers, etc. It relates to devices that enable efficient contact with people.

Conventional technology In order to increase the heat exchange efficiency and make the shape more compact, conventional heat exchangers consisting of fins and tubes have a corcade-like fin shape, or have slits in the fins to reduce the contact area with the fluid. Efforts have been made to increase the heat exchange rate.

Problems to be Solved by the Invention However, even with such a devised heat exchanger, the exchange rate cannot be increased unless the fluid to be cooled flows smoothly over the entire fin, which is the heat exchange surface. Therefore, in conventional devices, the fluid to be cooled generally concentrates in the center of the air flow path, making it difficult to obtain a high heat exchange rate.

SUMMARY OF THE INVENTION In view of the drawbacks of the prior art, it is an object of the present invention to provide a device that has a high heat exchange rate and can be made compact.

Means for Solving the Problems That is, the present invention has a layer of parallel fins stacked in multiple stages at a predetermined interval, a refrigerant tube passed through the fins, and a layer of fins between the upper and lower layers. A heat exchanger with a built-in buttful, which has a plurality of vertically elongated air flow holes extending perpendicularly to the surface of the fins inserted into the fin, and the positions of the air flow holes of the upper and lower buttholes to be inserted are staggered. The cooled fluid was allowed to flow over the entire heat exchange surface.

Function In the heat exchanger according to the present invention, when a refrigerant flows through the tube, the fins around the tube are cooled. When a fluid to be cooled (for example, air) is caused to flow through this heat exchanger in this state, the air comes into contact with the fins, which are heat exchange surfaces, and is cooled. Since the layers of fins are arranged in multiple stages, air tends to flow toward the next layer of fins. However, since the buttful is inserted between the fin layers so that the air flow holes are located perpendicular to the surface of the fins, air flows toward these air flow holes. When the inflowing air flows to the next layer of fins, its flow is changed because the position of the air flow opening in the lower butthole is different from that in the upper layer. Therefore, the fluid to be cooled flows in a zigzag pattern due to the baffle air flow openings.

Embodiment The present invention will be explained in detail below according to an embodiment shown in the drawings.

In FIG. 1, 1a and 1b are side plates forming the side surfaces of the heat exchanger, and between the side plates 1a and 1b are layers of a large number of fins 2 arranged almost parallel to each other, and holes bored in the fins 2. A heat exchange layer consisting of a refrigerant tube 3 through which refrigerant supplied from a refrigeration cycle inserted in the refrigerant tube passes is vertically stacked in multiple stages at predetermined intervals. Between the upper and lower layers of fins, which are installed in multiple stages, is a vertically long airflow opening 5 with a plurality of longitudinal airflow openings 4 arranged so that the longitudinal direction of the airflow openings 4 is perpendicular to the surface of the fins 2. is inserted into.
The upper and lower baffles 5 are configured such that the positions of the open air flow holes 4 are staggered when the fins 2 are installed between the layers of the fins 2. Note that 6 is a U-bend of the refrigerant tube 3.

The heat exchanger described above is attached to a compressed air heat exchanger as shown in FIG. That is, in the case shown in FIG. 2, the exit chamber 1 is separated by the partition plates 10a and 10b.
1, a heat exchange chamber 12 and a collection chamber 13. Inside the heat exchange chamber 12, partition plates 10a, 1
A precooler 15 and a heat exchanger 16 of the present invention are installed, each of which is composed of a heat transfer pipe 14 penetrating through the heat transfer pipe 14 and a casing surrounding the pipe, and the precooler 15 and the heat exchanger 16 are connected to each other through an air flow path 17. are communicating.
The precooler 15 is connected to the air inlet 18 on the downstream side of the heat transfer pipe 14, and is connected to the air flow path 17 on the upstream side of the heat transfer pipe 14.

To explain the operation of the heat exchanger, compressed air at about 40°C is passed from the air inlet 18 to the precooler 15, where it exchanges heat with the cooling air flowing through the heat transfer pipe 14, and is cooled to about 30°C. The cooled air flows into the heat exchanger 16 via the air flow path 17. The inflowing air must be configured such that each stage is partitioned by a buttful 5 as shown in Fig. 3, and the air circulation ports 4 provided in the upper and lower buttholes 5 are arranged in an alternate position. It flows in a zigzag pattern. As a result, the air, which is the fluid to be cooled, flows smoothly throughout the fins of the heat exchange surface.

Effects As described above, the heat exchanger according to the present invention has
Compared to the conventional type, the fins are arranged in multiple layers, and the air flow openings are arranged alternately between the layers of the fins. Flows smoothly between the fins, making full use of the heat exchange area, increasing the heat exchange rate. Furthermore, since the baffle inserted between the fin layers collides with the fluid to be cooled, condensed water droplets can be separated more efficiently than in the conventional fin type.

[Brief explanation of drawings]

1 to 3 show an embodiment of the heat exchanger according to the present invention, FIG. 1 is a perspective view showing the outline of the device, FIG. 2 is a vertical sectional view of the heat exchanger, and FIG. FIG. 3 is a longitudinal sectional view showing the flow of fluid. 1a, 1b... side plate, 2... fin, 3... refrigerant tube, 4... air circulation port, 5... full, 6... U bend, 10a, 10b... partition plate, 11... exit chamber, 12... Heat exchange room, 13...
... Collection chamber, 14 ... Heat transfer pipe, 15 ... Precooler, 16 ... Heat exchanger, 17 ... Air flow path.

Claims (1)

[Scope of utility model registration request] A plurality of parallel fin layers stacked at predetermined intervals, a plurality of refrigerant tubes penetrating the fins, and perpendicular to the plane of the fins inserted between the upper and lower fin layers. It consists of a vertically extending air vent with multiple vertically extending air holes.
A heat exchanger with built-in buttfuls, characterized in that the positions of the air circulation openings of the upper and lower inserted buttfulls are staggered.