A heat pump water heater laboratory cooling and heat balance device

Abstract

The invention discloses a cold and heat balance device for a test room of a heat pump water heater, which includes a compressor, a three-way regulating valve A, a heating heat exchanger, a cooling heat exchanger, a three-way regulating valve B, an economizer, and a gas-liquid separation device. The water storage tank, the water channel of the cold water evaporator and the water channel of the hot water condenser are connected through pipe groups to form a water circulation system; the water channel of the cold water evaporator Refrigerant channel, refrigerant channel of hot water condenser, compressor, three-way regulating valve A, heating heat exchanger, cooling heat exchanger, three-way regulating valve B, economizer, gas-liquid separator, liquid receiver It communicates with the filter through another pipe group to form a heat pump circulation system. The present invention has the advantages of: adopting cold and heat balance, transfer, and storage technologies, using little electric energy as a drive to meet the temperature requirements of the test room -25°C to 50°C, replacing the input of steam and electric heating equipment, low investment cost, The installation and operation are simple, and the system is highly efficient and energy-saving.

Description

technical field [0001] The invention relates to a cold-heat balance device, in particular to a heat-pump hot water machine laboratory cold-heat balance device. Background technique [0002] The air side cooling of the heat pump water heater test room mainly adopts the following methods: when the ambient temperature in the test room is high, a medium-temperature air conditioner is used; when the ambient temperature is low, a low-temperature air conditioner is used. The medium-low temperature air conditioner dissipates heat through a cooling tower. The heating of the air side in the test room mainly adopts electric heating or steam heating. The cooling and unloading mainly adopts multi-head automatic or manual unloading units, so as to achieve the purpose of constant temperature. The initial water temperature of the heat pump water heater relies on the air-cooled hot and cold water machine to raise and lower the temperature. The above-mentioned heating has the following disa...

AI Technical Summary

Problems solved by technology

At the same time, due to the poor heat dissipation effect of the cooling tower when the ambient temperature is high in summer, the temperature of the water to be cooled will be high, and the power consumed by the unit will rise linearly. Sometimes the unit will fail and cannot operate normally.

Electric heating or steam is used to heat up the test room, and the operating cost will be relatively high

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