Air source cooling and heating machine

Abstract

The invention belongs to the technical field of air-conditioning cooling and heating machines, in particular to an air source cooling and heating machine. The air source cooling and heating machine comprises an outdoor heat exchanger 5; wherein the outdoor heat exchanger 5 adopts an annular structure; a baffle 34 is arranged at the annular notch portion of the outdoor heat exchanger; a lining fiber 7 is arranged on the lower part of a cavity of the outdoor heat exchanger 5, and a compressor 8, a reversing valve 6 and a throttling part 9 are wrapped by the lining fiber 7; an outdoor exhaust fan18 is arranged on the upper part of the outdoor heat exchanger 5; and a solar heat absorbing coating is arranged on the outdoor heat exchanger 5. The air source cooling and heating machine has a large heat dissipating surface area per unit volume, can receive the heat of sunlight without frosting during work, and has high work efficiency and low noise, indoor air dehumidification water is used for condensation and heat dissipation in summer, defrosting water is used for indoor humidification in winter, the functions of waste heat for heating water, exchanging of fresh air and automatic cleaning are achieved, and the air source cooling and heating machine is suitable for carbon dioxide circulation

Description

technical field [0001] The invention belongs to the technical field of air conditioner cooling and heating machines, and in particular relates to an outdoor heat exchanger with a ring structure and a fan at the top, which is suitable for hanging, and can be used for heating, humidification, and air exchange waste heat recovery in winter, and for cooling, air exchange, dehumidification, and condensed water in summer. It is used as an outdoor heat exchanger to assist heat release, connect the coil water tank to recover heat in summer, heat pump heating and cooling in spring, autumn and winter, and is suitable for cooling and heating technology of carbon dioxide refrigerant cycle. Background technique [0002] At present, the common problems in the air source heat pump industry are: 1. The heat exchanger of the outdoor unit is extremely unreasonable, with low efficiency and large energy consumption for defrosting. 2. When the outdoor unit is defrosting in winter, the condensed ...

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Problems solved by technology

[0002] At present, the common problems in the air source heat pump industry are: 1. The heat exchanger of the outdoor unit is extremely unreasonable, the efficiency is low, and the energy consumption of frosting and defrosting is large

2. When the outdoor unit is defrosting in winter, the condensed water dripping often brings troubles to passers-by, and the icicles formed by the defrosting of outdoor units installed in high-rise buildings will bring safety hazards to passers-by below.

3. When cooling in summer, the indoor heat exchange condensate is directly discharged to the outside, which often brings embarrassment to passers-by, and there is no perfect technical solution to make carbon dioxide efficient refrigeration technology path

4. At present, for small central air conditioners with floor heating metal capillary tubes, when installing the outdoor unit, it is necessary to drill holes in the upper part of the outer wall of the building to pass indoor on-hook pipelines, and to drill holes in the lower part to pass floor heating metal capillary tubes. The construction cost is high and it is not conducive to building structure safety

5. The original design of the existing household air conditioner outdoor unit is mainly to facilitate the installation of windows and instantaneous heat removal. There is no maximum external surface heat exchanger per unit volume specially designed for continuous heating, so as to achieve low temperature difference in winter, high-efficiency heat exchange and less frosting. Low temperature differential carbon dioxide refrigerant circulation for multiple heat removal purposes

6. The noise of the current household heat pump cooling and heating outdoor units is generally 52-58db.

7. The existing upper exhaust air conditioner is not designed according to the conclusion of the cylindrical wind tunnel experiment, that is, the wind force at the center of the fan circle is weak, the angular velocity of the fan edge is high, and the air volume is large. The optimal design of the whole machine is carried out.

9. When connecting to the soil source interface, it is easy to cause condensation on the indoor ground

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