CN202581818U - Efficient heat-exchange heat transfer device - Google Patents

Abstract

The utility model discloses a high-efficiency heat exchange heat exchange device, which comprises a heat conduction sheet and a plurality of sets of heat conduction pipes interspersed and fixed on the heat conduction sheet. The ratio of the major and semi-major axes is between 1:1.4-1.9, and a baffle is arranged around the heat pipe. The baffle shields the flowing flue gas, so that the effective flue gas receiving area above the heat pipe increases, thereby improving thermal efficiency. The elliptical heat pipe and the heat conduction sheet are connected by brazing, so that the heat conduction pipe and the heat conduction sheet form a complete body to reduce contact loss. The circular heat pipe commonly used now will produce a large blind area on the leeward side of the air flow, resulting in low pressure difference heat exchange efficiency and causing some noise. The elliptical heat-conducting tube of the utility model reduces the blind area of air flow, and the air-flow on the back side of the elliptical heat-conducting tube is relatively balanced, the pressure difference is reduced, the heat transfer is high, and the noise is also small.

Description

A high-efficiency heat exchange heat exchange device

【Technical field】

The utility model relates to a heat exchange device, in particular to a high-efficiency heat exchange device suitable for household water heaters.

【Background technique】

The design of the heat exchange device in the traditional heat exchanger is shown in Figure 1: the circular heat exchange tube used will produce a large blind area on the leeward side of the air flow and the air flow will become turbulent, resulting in a pressure difference. The heat exchange is inefficient and also causes some noise.

【Content of utility model】

In view of the fact that heat exchangers in the prior art generally use circular heat exchange tubes, a large blind area will be generated on the leeward side of the air flow and the air flow will become turbulent, resulting in low pressure heat exchange efficiency and some noise, etc. Technical defect, the purpose of this utility model is to provide a heat exchange device with high heat transfer efficiency and low noise.

In order to achieve the above purpose, the technical means adopted by the utility model is a high-efficiency heat exchange heat exchange device, including a heat conduction sheet and a plurality of sets of heat conduction tubes interspersed and fixed on the heat conduction sheet. The ratio of the semi-minor axis to the semi-major axis of the ellipse is between 1:1.4-1.9, and a baffle is arranged around the heat-conducting pipe. The baffle shields the flowing flue gas, so that the effective flue gas receiving area above the heat pipe increases, thereby improving thermal efficiency. The elliptical heat pipe and the heat conduction sheet are connected by brazing, so that the heat conduction pipe and the heat conduction sheet form a complete body to reduce contact loss. The elliptical heat-conducting tube of the utility model reduces the blind area of the air flow. The circular heat-conducting tube commonly used now will produce a large blind area on the leeward side of the air flow, resulting in low pressure difference heat exchange efficiency and some noise. The air flow at the back of the elliptical heat pipe is relatively balanced, the pressure difference is reduced, the heat transfer is high, and the noise is also small.

Preferably, the ratio of the semi-minor axis to the semi-major axis of the ellipse is 1:1.5.

The heat transfer tube of the heat exchange device of the utility model adopts an elliptical cross-section and is perpendicular to the air inlet direction. A small baffle is designed around the elliptical heat transfer tube to block the flowing smoke, so that the upper part of the heat transfer tube can effectively receive the smoke. The air area increases, thereby improving thermal efficiency. The elliptical heat pipe reduces the blind area of the airflow, reduces the pressure difference, and improves the heat exchange efficiency. At the same time, the airflow on the back of the elliptical heat pipe is relatively balanced, which reduces the noise.

【Description of drawings】

Fig. 1 shows the structural representation of prior art;

FIG. 2 is a schematic structural view of the heat exchange device of the present invention.

【Detailed ways】

In order to further elaborate on the technical solution of the present utility model, it will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 2, the utility model discloses a high-efficiency heat exchange heat exchange device, which includes a heat conduction sheet 2 and a plurality of sets of heat conduction tubes 1 interspersed and fixed on the heat conduction sheet 2, and the cross section of the heat conduction tube 1 is ellipse The ratio of the semi-minor axis to the semi-major axis of the ellipse is between 1:1.4-1.9, and the heat pipe 1 is provided with baffles 3 around it. The baffle plate 3 shields the flowing flue gas, so that the effective flue gas receiving area above the heat pipe 1 is increased, thereby improving the thermal efficiency. The heat pipe 1 and the heat conduction sheet 2 are connected by brazing, so that the heat pipe 1 and the heat conduction sheet 2 form a complete body to reduce contact loss. The elliptical heat-conducting tube of the utility model reduces the blind area of the air flow. The circular heat-conducting tube commonly used now will produce a large blind area on the leeward side of the air flow, resulting in low pressure difference heat exchange efficiency and some noise. The air flow at the back of the elliptical heat pipe is relatively balanced, the pressure difference is reduced, the heat transfer is high, and the noise is also small.

The ratio of the minor semi-axis to the major semi-axis of the ellipse described in the utility model is preferably 1:1.5.

The heat transfer tube of the heat exchange device of the utility model adopts an elliptical cross-section and is perpendicular to the air inlet direction. A small baffle is designed around the elliptical heat transfer tube to block the flowing smoke, so that the upper part of the heat transfer tube can effectively receive the smoke. The air area increases, thereby improving thermal efficiency. The elliptical heat pipe reduces the blind area of the airflow, reduces the pressure difference, and improves the heat exchange efficiency. At the same time, the airflow on the back of the elliptical heat pipe is relatively balanced, which reduces the noise.

The above description is only for convenience to illustrate the utility model, and any simple modifications and deformations done by those skilled in the art within the scope of the creative spirit of the utility model still belong to the protection scope of the utility model.

Claims (3)

1. efficient heat exchange heat-exchanger rig; It is characterized in that: comprise conducting strip and intert being fixed on the many groups heat pipe on the conducting strip; The cross section of said heat pipe is oval; The ratio of said oval-shaped semi-minor axis and major semiaxis is provided with catch around the said heat pipe between 1: 1.4～1.9.

2. a kind of efficient heat exchange heat-exchanger rig according to claim 1 is characterized in that: adopt the solder brazing connected mode to be connected between said heat pipe and the conducting strip.

3. a kind of efficient heat exchange heat-exchanger rig according to claim 2 is characterized in that: said oval-shaped semi-minor axis is 1: 1.5 with the ratio of major semiaxis.

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