A heating heat pump dynamic control device

Abstract

The invention discloses a dynamic control device of a heating heat pump. The dynamic control device comprises a compressor, a four-way valve, a high-temperature reservoir, an intermediate-temperature reservoir, a three-way thermostatic valve, a heating radiator, a water pump, an economizer, a finned heat exchanger and a vapor-liquid separator. A refrigerant channel of the high-temperature reservoir, a refrigerant channel of the intermediate-temperature reservoir, the three-way thermostatic valve, the heating radiator and the water pump are communicated through one pipeline set to form a heating water circulating system. The compressor, the four-way valve, a heating medium channel of the high-temperature reservoir, a heating medium channel of the intermediate-temperature reservoir, the economizer, the finned heat exchanger and the vapor-liquid separator are communicated through the other pipeline set to form a heat pump circulating system. The dynamic control device has the beneficial effects that according to the device, the single heating mode of a heat pump water heater is changed into dual-mode heating achieving high heating and energy saving, and therefore indoor temperature can be increased fast; and when the indoor temperature is close to set temperature, the device is automatically switched to an energy saving mode, so that it is guaranteed that the indoor temperature is constant, and the situation that the indoor temperature exceeds comfortable temperature due to the fact that the temperature of supplied water is too high is avoided.

Description

technical field [0001] The invention relates to a heating device, in particular to a dynamic control device for a heating heat pump. Background technique [0002] Heating in northern rural areas is mostly based on radiators. Since the municipal gas supply network is not connected, heating mainly relies on coal boilers. Now that the air quality in the north is declining, frequent smog, high heating costs and many other comprehensive factors, the country is determined to vigorously promote the "coal to electricity" policy, which provides a huge opportunity for air source heat pumps for heating. [0003] When the radiator is heating, the general supply water temperature is about 65-50°C, the return water temperature is 55-40°C, and the temperature difference between supply and return water is 10°C. The heating temperature of the air source heat pump is 55°C, and the maximum unit outlet water temperature can reach 60°C, and the heat pump water heater is a cycle heating type, th...

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Problems solved by technology

The heating temperature of the air source heat pump is 55°C, and the maximum unit outlet water temperature can reach 60°C, and the heat pump water heater is a cycle heating type, the water drawn from the radiator can only be heated by about 5°C, and the temperature reaching the radiator is only over 20°C It is much worse than 65 degrees. It takes a long time to heat up the water in the whole system to heat up to 55 degrees. In this way, the indoor temperature rise will be very slow, which will cause users to be dissatisfied with the heating of the heat pump.

At the same time, when the indoor temperature reaches the set temperature, if the hot water above 55 degrees is continuously supplied, at this time, because the wall insulation effect is better and the heat dissipation is small, the indoor temperature will rise, exceed the set temperature, and fail to reach the set temperature. Comfortable temperature requirements. At this time, the customer artificially opens the window to introduce fresh air to cool down the indoor temperature, thereby losing a lot of heat energy and greatly increasing the operating cost.

When the indoor temperature is close to the set temperature, hot water of 55 degrees is always produced to supply the radiator, the energy consumption of the compressor will increase a lot, and the heat dissipation of the pipeline will also increase a lot

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