Frequency-conversion multi-split radiation central air-conditioning hot water unit

Abstract

The invention belongs to the field of air conditioners and heat-pump water heaters and relates to a frequency-conversion multi-split radiation central air-conditioning hot water unit. The frequency-conversion multi-split radiation central air-conditioning hot water unit comprises one or more outdoor unit and one or more indoor unit; and the outdoor unit is connected with the indoor unit through three refrigerant copper tubes of the steam pipe, the liquid tube and the high and low pressure tube. A radiation air-conditioning system is formed by the indoor unit together with a radiation terminaland a fresh air pipeline which are mounted indoors; and a heat-pump life hot water system is formed by the outdoor unit, a hot water tank and a hot water pipeline. According to the frequency-conversion multi-split radiation central air-conditioning hot water unit, both a summer refrigeration and water heating mode and a warming season radiation heating and fresh air dehumidification mode are operated under the refrigerant total heat recovery working condition; and in winter and summer, cold and heat in exhaust air are recovered deeply through a heat recovery condenser, cold in condensed watercan be recovered in summer, and by the aid of high-temperature cold water supply of a radiation water-temperature-changing portion, the whole unit is more efficient and saves more energy.

Description

technical field [0001] The invention relates to the technical field of radiant air conditioners and heat pump water heaters, more specifically, it relates to a frequency conversion multi-connected radiant central air conditioner hot water unit. Background technique [0002] Radiant air-conditioning system is a new technology air-conditioning system with independent control of temperature and humidity, which can be installed in the ceiling, wall and floor. Use high-temperature cold water to deal with indoor sensible heat load in the way of radiation heat transfer, and use independent fresh air dehumidification to deal with indoor latent heat load. Its advantages are: health; comfort; energy saving. [0003] The current centralized and household radiant air-conditioning systems are composed of heat pump chilled water air-conditioning units, coupling tanks, mixing water adjustment centers, sub-collectors, full heat recovery dehumidification fresh air fans, radiant terminals (r...

AI Technical Summary

Problems solved by technology

The water pipeline and air pipeline in these two radiant air-conditioning systems are cumbersome, complicated to control, and poor in stability; design, installation and construction are difficult, and at the same time occupy a large installation space

Indoor and outdoor cold and heat are transmitted through water pipes, there is a hidden danger of water leakage, and it is easy to freeze the pipes and units in winter

The demand for low-temperature cold water required for dehumidification hinders the high-temperature water supply of heat pump chillers and limits the improvement of energy efficiency of heat pump chillers

There is also the contradiction that the large-capacity compressor used for indoor dehumidification will produce noise, and the dehumidification capacity of the small-capacity compressor is not enough.

In addition, in the existing radiant air-conditioning system, the exhaust heat of the outdoor unit in summer and the cold heat in the dehumidification condensed water cannot be recycled, and the heat recovery of the exhaust air of the fresh fan is insufficient, resulting in a waste of energy

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