JP2002228266A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a flow of combustion gas along a heating pipe and to improve thermal efficiency. SOLUTION: A V-shaped guide plate 7 formed that a fin 4 is cut for rising is situated between heating pipes at an upper stage. This constitution enables the improvement of thermal efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger for mainly circulating hot water.

[0002]

2. Description of the Related Art In a conventional hot water supply / room heater, a burner 1 for burning a mixed gas obtained by mixing gas with fuel as air is provided below a drum 2 constituting a combustion chamber. The combustion gas heated by the burner 1 rises along the drum 2, receives heat by the fins 4 of the heat exchanger 3, and heats hot water circulating in the heating pipe 5. The heated hot water is radiated by the heating radiator 6 as hot air. The combustion gas not received by the fins 4 is exhausted from the exhaust port 6 of the hot water supply / room heater at a high temperature.

[0003]

However, in the conventional structure, the combustion gas flowing between the heating pipe 5 and the heating pipe 5 passes as it is and is discharged at a high temperature from the exhaust port 6 of the hot water supply / heating machine, so that the heat efficiency is reduced. There was a problem that it decreased.

[0004]

In order to achieve the above object, a heat exchanger according to the present invention has a plurality of heating pipes 5 communicating in parallel with a heating water channel, a plurality of heating pipes 5 in a vertical direction, and a plurality of parallel heating pipes. Heat pipe 5 in the upper stage to be prepared in the fin 4
A V-shaped shape is formed between the heating pipe 5 and the inclined guide plate 7 that guides toward the center line of the heating pipe 5 by standing up from fins.

According to the above invention, the combustion gas flowing between the heating pipe 5 and the heating pipe 5 passes along the heating fins 4 without passing through the exhaust port 6 of the hot water supply / room heater as it is at a high temperature. More heat can be supplied to the flow heating pipe 5.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is directed to a pipe having a plurality of heating pipes connected to a heating water channel in parallel and a plurality of pipes in a vertical direction and provided in parallel in a plurality of rows in the same fin. A V-shaped shape is drawn between the heating pipes, and an inclined guide plate that guides toward the center line of the heating pipe is formed by rising from fins, or is cut horizontally between the upper heating pipe and the heating pipe. This is a heat exchanger in which a raised guide plate is formed by rising from a fin.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heat exchanger for a hot water supply / room heater according to the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 shows a schematic configuration of a hot water supply / room heater as Embodiment 1 of the present invention. A hot water heater is a burner that burns a mixed gas using gas as fuel and air
Are provided at the lower part of the drum 2 constituting the combustion chamber.
The combustion gas heated by the burner 1 rises along the drum 2, receives heat by the fins 4 of the heat exchanger 3, and heats hot water circulating in the heating pipe 5. The heated hot water is circulated by the drive of the pump 9 and is radiated by the heating radiator 10 as warm air.

The structure of the heat exchanger 3 is shown in FIG.
(B) and (c). FIG. 2A is a plan view of the fin,
FIG. 2B is a side view of the fin, and FIG. 2C is a plan view of the fin before the guide plate is bent. As is clear from FIG. 2, the heating pipe 5 is configured by arranging a large number of common fins 4 in upper and lower stages and brazing them integrally. Between the heating pipes 5 in the upper stage, the inclined guide plate 7 for guiding the combustion gas flowing from below in a V-shape with the heating pipe 5 toward the center line of the heating pipe 5 is provided from the fin 4. It is formed by rising, and the combustion gas from below flows along the upper heating pipe 5.

(Embodiment 2) The schematic configuration of a hot water supply / room heater is the same as that of Embodiment 1. In the hot water supply heater, a burner 1 for burning a mixed gas obtained by mixing gas with fuel as air is provided below a drum 2 constituting a combustion chamber. The combustion gas heated by the burner 1 rises along the drum 2, receives heat by the fins 4 of the heat exchanger 3, and heats hot water circulating in the heating pipe 5. The heated hot water is circulated by the drive of the pump 9,
Heat is radiated by the heat radiator 10 as warm air.

The structure of the heat exchanger 3 is shown in FIG.
(B) and (c). FIG. 3A is a plan view of the fin,
FIG. 3B is a side view of the fin, and FIG. 3C is a plan view of the fin before the guide plate is bent. As is clear from FIG. 3, the heating pipe 5 is configured by arranging a large number of shared fins 4 in upper and lower stages and brazing them integrally. Between the heating pipes 5 in the upper stage, a guide plate 8 which cuts and raises the combustion gas flowing from below horizontally with the heating pipes 5.
Are formed by rising from the fins 4, and the combustion gas from below is caused to flow along the heating pipe 5 in the upper stage.

[0012]

As described above, according to the heat exchanger of the hot water supply / room heater of the present invention, a plurality of heating pipes communicating with the heating water channel are provided in parallel, a plurality of heating pipes are provided in the vertical direction, and a plurality of parallel heating pipes are identical. In the one provided in the fin, an inclined guide plate that guides toward the center line of the heating pipe is formed by rising from the fin in a shape that draws a V-shape with the upper heating pipe. Alternatively, in the case where a plurality of heating plates are provided in the vertical direction and provided in parallel in a plurality of rows in the same fin, a guide plate horizontally cut and raised between the upper heating pipe and the heating pipe is formed by rising from the fin. From this, the combustion gas is prevented from passing through each heating pipe at a high speed, and the combustion gas contacts the heating pipe, increasing the amount of heat received by the heating pipe, reducing the exhaust gas loss and improving the heat efficiency. To play.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a hot water supply / room heater according to Embodiment 1 of the present invention.

2A is a plan view of a fin of the heat exchanger. FIG. 2B is a side view of a fin of the heat exchanger. FIG. 2C is a portion showing a state before a guide plate of the fin of the heat exchanger is bent. Plan view

FIG. 3 (a) is a plan view of a fin of a heat exchanger of a hot water supply / room heater according to a second embodiment of the present invention. (B) a side view of a fin of the heat exchanger. (C) a guide plate of a fin of the heat exchanger. Partial plan view showing the state before bending

FIG. 4 is a plan view of fins of a heat exchanger of a conventional hot water supply / room heater.

[Explanation of symbols]

 3 Heat exchanger 4 Fin 5 Heating pipe 7, 8 Guide plate

Claims (2)

[Claims] 1. A plurality of heating pipes communicating with a heating water passage are arranged in a horizontal direction and a plurality of stages in a vertical direction, and are arranged at an upper stage in a heat exchanger formed through a plurality of fins. A heat exchanger provided with a V-shaped guide plate cut and raised from the fin between a heating pipe and the heating pipe. 2. A plurality of heating pipes communicating with a heating water passage are arranged in a horizontal direction and a plurality of stages in a vertical direction, and are arranged at an upper stage in a heat exchanger formed through a plurality of fins. A heat exchanger provided with a horizontal guide plate formed by cutting and raising the fins between the heating pipes.