Water source heat pump device for making hot water within non-heating full-load time

Abstract

The invention discloses a water source heat pump device for making hot water within non-heating full-load time. On the structural basis of an existing water source heat pump heat recovery unit mainly composed of a compressor (1), a heat recoverer (2), a water-cooling condenser (3), a drying filter (5), a water-cooling evaporator (6), a thermostatic expansion valve (7), a high-pressure and low-pressure controller (8) and a high-pressure and low-pressure gauge (9), a temperature sensor (13) is installed at a water inlet of the water-cooling condenser, an air conditioner water circulating pump (12) is installed at the portion, in front of the water inlet of the water-cooling condenser, of an air conditioner water return pipeline, and a hot water circulating pump (11) is installed at the portion, in front of a water inlet of the heat recoverer, of a hot water return pipeline. Detected air conditioner water return temperature signals are fed back to a main controller (10) through the temperature sensor (13) so that the hot water circulating pump can be controlled to be started and stopped, and therefore the unit can accurately make hot water through residual heat released within the non-heating full-load time, and heating and hot water supplying are achieved at the same time. The aims of saving running expenses and improving the economy and practicability of the device are achieved.

Description

technical field [0001] The invention relates to the technical field of water source heat pumps, and mainly relates to a water source heat pump device for producing hot water during non-heating full-load hours. Background technique [0002] At present, there are mainly three types of water source heat pump products on the market: water source heat pump central air conditioning units, water source heat pump hot water units, and water source heat pump heat recovery units. [0003] Water-source heat pump central air-conditioning units provide air-conditioning cooling loads for buildings in summer and heating loads for buildings in winter. This type of units has no function of making hot water; while water-source heat pump hot water units only provide hot water for users, such as If users need heating, they need to add additional heating equipment; the above two heat pump products do not have the function of providing hot water for users while heating in winter. [0004] With th...

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Problems solved by technology

However, the heat recovery unit on the market has a relatively extensive control method for hot water application. In winter, the control method adopted by the unit is mostly to start the hot water circulation pump first. Just switched to the heating mode for heating. With this control method, the user needs to start the heat recovery unit in advance for hot water storage during non-heating hours. The extensive control method will inevitably reduce the comfort of the user; the commercial vortex heat recovery unit The fixed-frequency scroll compressor is used, and a single compressor does not have the ability to adjust energy, and the heating building is not always in a state of full load demand. If this extensive control method is adopted, the unit cannot be used for non-heating. The excess heat released during full load time is used to make hot water, which reduces the economical availability of the equipment

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