Heat source machine formed by connecting gas water heaters in parallel and control method

Abstract

The invention discloses a heat source machine formed by connecting gas water heaters in parallel and a control method. The heat source machine comprises a main water inlet pipe, a hot water convergence pipe, a main gas inlet pipe, gas water heaters and a system controller. The gas water heaters are connected in parallel through the main water inlet pipe, the hot water convergence pipe and the main gas inlet pipe. Each gas water heater is internally provided with a water flow collecting sensor, a water inlet temperature detector and a water outlet temperature detector and is connected with the system controller through a communication bus and a signal converter arranged on the communication bus. A water inlet electromagnetic valve is arranged on a cold water pipe of each gas water heater and connected with the system controller through a water inlet switch control line. During working, data of each gas water heater are transmitted to the system controller, the number of the gas water heaters needing to work is worked out, the system structure is simple, installation is convenient, the water temperature is constant, no constant temperature water tank is needed, and safety is high.

Description

technical field [0001] The invention relates to a heat source machine, in particular to a heat source machine formed by parallel connection of gas water heaters and a control method. Background technique [0002] At present, there are many places that need to supply large flow of hot water, such as constant temperature swimming pools, hotels, hotels, etc., which may require a large flow of constant temperature hot water in a short period of time, and the existing single gas water heater is limited by the heating load. It cannot meet the demand for large-flow constant-temperature hot water; although large-scale boilers can provide large-flow hot water, the water temperature is not constant, and a water storage tank is required, and heat loss will occur during the heat preservation process. The boiler system is bulky and takes up space, requiring special care. Frequent maintenance, high operating noise, high cost of use, and regular inspections are required. The existing para...

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Problems solved by technology

[0002] At present, there are many places that need to supply large flow of hot water, such as constant temperature swimming pools, hotels, hotels, etc., which may require a large flow of constant temperature hot water in a short period of time, and the existing single gas water heater is limited by the heating load. It cannot meet the demand for large-flow constant-temperature hot water; although large-scale boilers can provide large-flow hot water, the water temperature is not constant, and a water storage tank is required, and heat loss will occur during the heat preservation process. The boiler system is bulky and takes up space, requiring special care. Frequent maintenance, high operating noise, high cost of use, regular inspection is required

The existing parallel water heater units in the prior art all need to be equipped with a constant temperature water tank, and the constant water temperature is controlled by corresponding supporting circulating water pumps, temperature probes, stop valves, water replenishment solenoid valves, etc. The booster pump and circulation pipeline have complex structures and high investment costs, and the maintenance costs for the constant temperature water tank and corresponding instruments are not small

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