Upward air curtain multi-union type heat pump air conditioner driven through air solar composite source

Abstract

The invention discloses an upward air curtain multi-union type heat pump air conditioner driven through an air solar composite source. Firstly, solar energy is absorbed through a reflector, transparent blades and a finned black cavity, air energy is absorbed through fins, and a solar absorber and an air fin evaporator are integrally designed; secondly, an air and solar composite source multi-union type heat pump air conditioner is established to increase the evaporation temperature; thirdly, the condensation temperature is decreased through the vertical upward air curtain unified heating and efficient air conditioner tail end form; fourthly, the heating capacity and the energy efficiency ratio are increased by reducing the circulation temperature difference; and fifthly, the solar energy is utilized for driving the heat pump through an efficient and cheap photo-thermal converting form, and the application threshold of the solar multi-union type heat pump air conditioner is lowered.

Description

(1) Technical field [0001] The invention relates to an air-solar compound source driven upwind curtain multi-connected heat pump air conditioner. (2) Background technology [0002] The existing solar heat pump air conditioners mainly have two product forms: [0003] 1. The heat pump evaporator is designed as a solar panel absorber: it is made of double-layer aluminum plates painted black on the surface facing the light, and the distributor and circulation pipe of Freon heat pump working fluid are formed between the double-layer aluminum plates; among them, the black-coated aluminum plates are used to absorb the sun. light and provide heat for evaporation, while distributors and flow ducts are used to optimize the evaporation process in the heat pump cycle. Since the intensity of sunlight received by each square meter area does not exceed 1kW, it greatly limits the improvement of the heating capacity of the heat pump; in addition, since this form of evaporator has no fins, i...

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Problems solved by technology

Since the intensity of sunlight received by each square meter area does not exceed 1kW, it greatly limits the improvement of the heating capacity of the heat pump; in addition, since this form of evaporator has no fins, it can be used from the evaporator at night when there is no sunlight. The heat absorbed in the air is greatly reduced, resulting in a low utilization rate of the product, which can only be used to heat a small amount of domestic hot water during the day, and its heating capacity is much lower than that of an air source heat pump water heater

[0004] 2. The heat pump air conditioner and the solar panel are independently designed: the solar panel converts the received sunlight into alternating current through the inverter, which is used to drive compressors, fans, and circulating water pumps of various forms of heat pump air conditioners; however Since the intensity of sunlight received by each square meter area does not exceed 1kW, and the existing photoelectric conversion efficiency is extremely low, not only the area required for solar panels is very large, but also the investment required for solar panels is very large. Expensive; therefore difficult to commercialize at the current state of the art

[0006] 1. Buried pipe heating: Due to the heat storage and heat radiation through the floor, the condensation temperature can be reduced and the heat pump heating capacity and energy efficiency ratio can be improved; however, its disadvantages are as follows: (1) The material cost and installation cost of the buried pipe are relatively high; ( 2) The product must be assembled on site, and it is difficult to ensure the quality of the product when it is supplied in large quantities; (3) It is difficult to maintain the buried pipe; (4) In order to realize the air-conditioning function, it is necessary to add a wall-mounted indoor unit to switch between the two terminals. On the one hand, this leads to fluid accumulation of Freon working fluid, which affects product reliability; on the other hand, the two terminals also increase product cost

[0007] 2. Multi-connected air conditioner: In order to realize the return air dehumidification of the air conditioner in summer, its indoor unit cools the indoor return air at 27°C to 12°C with a small air volume and large temperature difference; however, when the indoor unit is used for heating in winter, it faces The following dilemmas: (1) The small circulating air volume corresponds to a large temperature difference between the supply air and the return air, which leads to a high condensation temperature and reduces the heat pump heating capacity and energy efficiency ratio, making it difficult to independently meet the heating application requirements in the northern severe cold regions; (2) wall-mounted Type indoor unit and ceiling-mounted indoor unit: Since the air is returned from the roof and the air is supplied from the upper part, the upper part of the room is always circulated and heated and then returned after thermal stratification; this increases the condensation temperature on the one hand and reduces the heating capacity and energy efficiency of the heat pump On the other hand, the air temperature in the lower part is lower, which reduces the heating effect; (3) Vertical cabinet type indoor unit: because the lower part returns air and the middle part supplies air horizontally, the lower return air is always circulated and heated to improve the heating effect

[0009] 4. Vertically downward cold air curtain for air conditioners: block the penetration of hot air and reduce the cooling load of building air conditioners; but because the air curtain is formed vertically downward, the effect of heating operation is not ideal

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