Composite system formed by gas water heater and air source heat pump

Abstract

The invention discloses a composite system formed by a gas water heater and an air source heat pump. The composite system structurally comprises the gas water heater and the air source heat pump; a water outlet of the air source heat pump is connected with a water inlet of the gas water heater, and a water outlet of the gas water heater is provided with a temperature sensor and is connected to a user side; an exhaust pipe of the gas water heater is connected to a heat exchange coil pipe, and refrigerants of the air source heat pump pass through the heat exchange coil pipe and then flow into an evaporator; a casing pipe is arranged on the outer side of the evaporator; a four-way valve is arranged on an inlet of the casing pipe and is connected to an exhaust outlet of the heat exchange coil pipe, an inlet of the casing pipe, a first ventilation pipe and a second ventilation pipe; and an air blower is arranged on the second ventilation pipe, and a plurality of turbulent flow plates are arranged in the casing pipe. The composite system can overcome shortcomings in the prior art, and the waste heat utilization rate of high-temperature tail gas is improved, and meanwhile the structure of a defrosting device is simplified; and reliability of running of equipment is improved.

Description

technical field [0001] The invention relates to the technical field of heating and ventilation, in particular to a composite system composed of a gas water heater and an air source heat pump. Background technique [0002] As people pay more attention to energy conservation and environmental protection, improving the energy utilization rate of HVAC equipment has become one of the important research directions for technicians. Air source heat pump is a new type of HVAC equipment in recent years, which has higher energy utilization and less exhaust emissions than general HVAC equipment. However, the independent air source heat pump system has the problems of low energy efficiency in winter and difficulty in defrosting the external evaporator. In view of this defect, Chinese patent CN102003835B discloses a scanning defrosting type air source gas heat pump, which solves the problem of difficult defrosting. However, the defrosting device still has the disadvantages of complex st...

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Problems solved by technology

However, the independent air source heat pump system has the problems of low energy efficiency in winter and difficult defrosting of the external evaporator

In response to this defect, Chinese patent CN102003835B discloses a scanning defrosting air source gas heat pump, which solves the problem of difficult defrosting

However, the defrosting device still has the disadvantages of complex structure, many moving parts, and high failure rate; at the same time, the high-temperature exhaust gas of the gas engine is only used for defrosting, and the utilization rate of waste heat is low

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