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Gas water heater and its composite heat exchanger

A gas-fired water heater and heat exchanger technology, which is applied to heat exchange equipment, water heaters, fluid heaters, etc., can solve problems such as the inability to effectively improve the thermal efficiency of the water heater and the limited effect.

Inactive Publication Date: 2018-03-27
TAIWAN SAKURA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although there are fins that use the design of the formed convex part to prolong the residence time and distance between the gas combustion heat and the fins, so as to improve the heat absorption effect of the fins, the effect is still quite limited and cannot effectively improve the thermal efficiency of the water heater
The heat efficiency of above-mentioned water heater also can only reach 80.9%, and its effect is still limited

Method used

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  • Gas water heater and its composite heat exchanger
  • Gas water heater and its composite heat exchanger
  • Gas water heater and its composite heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0080] see figure 1 , The present invention provides a gas water heater, which includes a body 1, a fan 2, a burner (fire row) 3 and a heat exchanger 4. The body 1 is a hollow shell, and the fan 2, the burner 3 and the heat exchanger 4 are arranged inside the body 1. The positions of the fan 2, the burner 3 and the heat exchanger 4 are not limited, and can be adjusted according to needs. Variety. In this embodiment, the fan 2 , the burner 3 and the heat exchanger 4 are sequentially arranged inside the body 1 from bottom to top, and the burner 3 is located between the fan 2 and the heat exchanger 4 . When the burner 3 is ignited, the burner 3 can generate high-temperature combustion gas, which is pushed upwards, and the combustion gas contacts the heat exchanger 4 to perform heat exchange, so that the water flowing through the heat exchanger 4 can It is heated from normal temperature to high temperature, and then discharges hot water for use.

[0081] The heat exchanger 4 is...

no. 2 example

[0105] see Figure 2 to Figure 4 , Figure 8 to Figure 10 , the present embodiment discloses a pyramidal vortex generator 416 . The vortex generators 416 are punched and formed on the fins 41 respectively, and the vortex generators 416 can respectively protrude from one side or the other side of the fins 41 . Each vortex generator 416 is a pyramid, and the vortex generator 416 has a triangular bottom C and a plurality of slopes D, and the vortex generator 416 is connected to the fin 41 with the bottom C, and is defined as follows:

[0106] The distance between two adjacent fins is Fp, the width of the vortex generator is g1, the length of the vortex generator is gt, the height of the vortex generator is gh, and the vertical distance between the lower edge of the vortex generator and the center point of the water pipe at the top is Ph, the water pipe The horizontal pitch is Pt, and the longitudinal pitch of the water pipe is Pl.

[0107] If the following relational condition...

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Abstract

A gas water heater and its composite heat exchanger. The composite heat exchanger is designed as a slit fin heat exchanger. The composite heat exchanger has a plurality of fins arranged at intervals. There are convex parts and vortex generators, the vortex generators can be wave-shaped or pyramid-shaped, and when the vortex generators are wave-shaped, it is defined that the distance between two adjacent fins is Fp, and the width of the vortex generators is w1 , the arc radius of the arc portion of the vortex generator is wr, and the arc angle of the arc portion of the vortex generator is wa. If the following relational conditions are satisfied, better thermal efficiency can be achieved: w1 = (1.32-2.86) Fp, wr = (0.4-0.9) Fp, wa = 100-150 degrees.

Description

technical field [0001] The present invention is to provide a heat exchanger, especially a gas water heater capable of achieving better thermal efficiency and a composite heat exchanger thereof. Background technique [0002] By the way, water heaters are an indispensable device for general household life. In terms of energy used, they can be roughly divided into gas water heaters, electric water heaters, and solar water heaters. Among them, gas water heaters are widely used by the general public. [0003] The existing gas water heater is provided with a fan, a burner and a heat exchanger inside the body. The heat exchanger is connected with a cold water pipeline and a hot water pipeline. The cold water pipeline and the hot water pipeline can form a water passage. One end of the cold water pipeline has a cold water inlet, which can be connected to an appropriate water source for inputting cold water to be heated. One end of the hot water pipeline has a hot water outlet, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H1/14F28D1/04F28F1/32
Inventor 吴兢先薛承志杜佩麟陈昭文
Owner TAIWAN SAKURA
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