Heat pump system and flow measuring method thereof

Abstract

The invention discloses a heat pump system comprising a first heat exchanger, a second heat exchanger, a compressor and a throttling element which are connected through connecting pipes to form a heat exchange working medium circulation loop, wherein a heat exchange working medium flow meter is arranged on the heat exchange working medium circulation loop, the heat exchange working medium flow meter comprises a shell, an inlet and an outlet are arranged on the shell, a rotating shaft is arranged in the shell, an impeller is arranged on the rotating shaft and between the inlet and the outlet, a magnetic pole is arranged on the rotating shaft, a coil corresponding to the magnetic pole is arranged on the shell, and the coil is electrically connected with a signal analyzing and processing device. The heat pump system disclosed by the invention can more conveniently measure the flow rate of the heat exchange working medium in the heat pump system, and has important directive significance on mass production of new products such as air conditioner or heat pump water heaters and the like.

Description

technical field [0001] The invention relates to a heat pump system and a flow measurement method thereof. Background technique [0002] At present, the charging amount of the heat exchange working medium in the heat pump system (such as air conditioner or heat pump water heater) is generally calculated through the heat of the heat pump system. However, there is often a certain deviation between the calculated value and the actual demand of the heat pump system. The deviation of the charging amount of thermal working medium will have a certain impact on the actual operation of the heat pump system. For example, when the charging amount is too small, the cooling capacity will decrease, which cannot meet the user's requirements; when the charging amount is too high, the power will be reduced. Increased consumption will increase the user's use cost, which is not conducive to energy saving. [0003] As far as the current situation is concerned, experienced designers and new prod...

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Problems solved by technology

[0002] At present, the charging amount of the heat exchange working medium in the heat pump system (such as air conditioner or heat pump water heater) is generally calculated through the thermal calculation of the heat pump system, but there is often a certain deviation between the calculated value and the actual demand of the heat pump system, and the replacement The deviation of the charging amount of thermal working medium will have a certain impact on the actual operation of the heat pump system. For example, when the charging amount is too small, the cooling capacity will decrease, which cannot meet the user's requirements; when the charging amount is too high, the power will be reduced. Consumption increases, increasing the user's use cost, which is not conducive to energy saving

[0003] As far as the current situation is concerned, experienced designers and new product trial-manufacturers often need to take corresponding technical measures and make precise adjustments to the operation process of new products in order to obtain the correct charging amount of heat exchange working fluid. It is extremely inconvenient to use, so it is necessary to improve the existing structure in order to more conveniently measure the flow rate of the heat exchange working medium

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