Detection device of gas water heater and gas water heater

The embodiment of the utility model provides a detection device of a gas water heater and the gas water heater. A detection device for a gas water heater having an exhaust pipe provided on the exhaustside and a fan for driving a gas to be discharged to the outside from the inside of the gas water heater via the exhaust pipe, the detection device comprising: a first absolute pressure sensor provided on the exhaust pipe and detecting the exhaust gas pressure in the exhaust pipe; and a second absolute pressure sensor which is provided outside the exhaust pipe and detects the atmospheric pressureoutside the exhaust pipe. Through the embodiment of the utility model, the information for determining the pressure difference between the exhaust pressure and the external atmospheric pressure can be obtained with lower cost and higher detection precision. 本实用新型实施例提供一种燃气热水器的检测装置和燃气热水器。该燃气热水器具有设置于排气侧的排气管以及驱动气体经由该排气管从该燃气热水器的内部排出到外部的风机，该检测装置具有：第一绝对压力传感器，其设置于该排气管，检测该排气管内的排气气压；以及第二绝对压力传感器，其设置于该排气管外部，检测该排气管外的大气压。通过本实用新型实施例，能够以