Cast aluminum heat exchanger of gas-fired boiler

Abstract

The invention relates to a cast aluminum heat exchanger of a gas-fired boiler. The cast aluminum heat exchanger of the gas-fired boiler comprises a front module, a middle module and a back module, wherein a water channel is arranged in each module, a flue is formed between adjacent modules, the front module, the middle module and the back module are formed through die casting, each water channel consists of a main water inlet channel, a heat exchange water channel and a main water outlet channel, the heat exchange water channel in each module is communicated with the main water inlet channel and the main water outlet channel, the main water inlet channels of adjacent modules are communicated and the main water outlet channels of adjacent modules are communicated. Since the cast aluminum heat exchanger is formed by adopting the die casting process instead of the sand casting process, the production efficiency is improved and the manufacturing cost is reduced; since the main water inlet channels, the heat exchange water channels and the main water outlet channels are all built in the modules, the size of the heat exchanger is reduced, the assembling structure is simplified and the installation steps and the material costs of the water channels are reduced.

Description

technical field [0001] The invention relates to a cast aluminum heat exchanger for a gas boiler, especially suitable for gas boiler gas appliances such as hot gas heating water heaters. Background technique [0002] In the prior art, the Chinese patent application document CN103542526A discloses a cast aluminum heat exchanger for a gas water heater, including a left heat exchange end plate, a right heat exchange end plate, a middle heat exchange plate, a water inlet pipe, and an outlet pipe. Water pipes, the left heat exchange end plate, the right heat exchange end plate, and the middle heat exchange plate are respectively provided with water flow channels, the water inlet pipes are connected with the water inlets of the above-mentioned water flow channels, and the water outlet pipes are connected with the water outlets of the above-mentioned water flow channels. The above middle heat exchange plate is sandwiched between the left heat exchange end plate and the right heat ex...

AI Technical Summary

Problems solved by technology

Although it can improve the versatility of the cast aluminum heat exchanger, so that the cast aluminum heat exchanger can be freely assembled and combined with the required power, but the assembly of the water inlet pipe and the water outlet pipe is troublesome, and the overall volume is relatively large. In addition, the cast aluminum heat exchanger Heat exchangers are generally formed by sand casting process, and there are still problems such as troublesome processing, low efficiency and high cost.

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