Heat pump water heater with liquid homogenization device and liquid homogenization method

Abstract

The invention discloses a heat pump water heater with a liquid homogenization device. An expansion valve is connected with a separating liquid homogenization device; a liquid inlet pipe is arranged on the top of the barrel body of the separating liquid homogenization device; the separating liquid homogenization device comprises the barrel body, an air outlet on the top of the barrel body, and a liquid homogenization device on the bottom of the barrel body, wherein a clapboard is embedded into the barrel body and is provided with evenly-distributed apertures; the liquid homogenization device consists of a stream guidance hole sleeve and a liquid homogenization sleeve sheathed at the outer part of the stream guidance hole sleeve; during sheathing, orifices on the upper half part of the liquid homogenization sleeve are positioned on the outer edge of the round hole on the bottom of the stream guidance hole sleeve; the lower half part of the liquid homogenization sleeve is of a shunting capillary; the air outlet is connected with a gas-liquid separator; a balance pipe and a temperature wrap are installed on the outlet of the gas-liquid separator; the separating liquid homogenization device is connected with a fin evaporator via the shunting capillary. The invention also provides a liquid homogenization method. According to the invention, the separating liquid homogenization device is adopted, the variable flow, ejection and throttling technology is adopted to effectively guarantee that refrigerant discharged from the separating liquid homogenization device is even, so that the evaporator of the heat pump water heater can carry out complete evaporation, and the refrigeration capability is improved.

Description

technical field [0001] The invention relates to the field of heat pump water heaters, in particular to a heat pump water heater with a liquid equalizing device and a liquid equalizing method. Background technique [0002] Heat pump water heaters need to produce hot water throughout the year, so how to make the evaporator fully obtain external heat is particularly important. The evaporation effect has a great relationship with the amount of refrigerant allocated to the evaporator. The liquid distributor component is responsible for the even distribution of the refrigerant in the evaporator. If the distribution of the liquid distributor component is not uniform, there will be too much refrigerant in some branches, and the evaporator will be frosted. As a result, the evaporation will not be complete, resulting in The liquid flows out of the evaporator; some refrigerants are too small to make full use of the heat transfer area of ​​the evaporator. The overall performance is tha...

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Problems solved by technology

[0004] After the refrigerant passes through the expansion valve, the pressure drops, and the refrigerant will more or less evaporate part of it and become a gas. Then, under the influence of gravity and flash gas, the mixture of these liquids and gases will flow to a place with less resistance. , so ordinary liquid separators cannot evenly distribu

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