Floor heating multi-split air conditioning system

Abstract

The invention discloses an underfloor-heating multi-type air conditioner system including: an outdoor machine, a refrigerant pipe connected with an output end of the outdoor machine, a manifold connected with an input end of the refrigerant pipe, an indoor machine connected with an output end of the refrigerant pipe, and a controller connected respectively with the outdoor machine and the indoor machine through a shielded signal line, wherein the underfloor-heating multi-type air conditioner system further includes: a set of underfloor-heating pipes including a composite underfloor-heating pipe, a third cutoff valve, a third filter, a third electronic expanding valve, a fourth cutoff valve and an underfloor-heating pipe control board; the composite underfloor-heating pipe is connected with the outdoor machine through the refrigerant pipe and a manifold; the third cutoff valve, the third filter and the third electronic expanding valve are arranged in sequence in the inflow direction of a refrigerant on the refrigerant pipe connected with a refrigerant inflow end of the composite underfloor-heating pipe; the third electronic expanding valve is electrically connected with the underfloor-heating pipe control board; and the fourth cutoff valve is arranged on the refrigerant pipe connected with a refrigerant outflow end of the composite underfloor-heating pipe. With the invention, heating can be provided by precisely controlling indoor temperature and effectively lower power consumption.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a floor heating multi-connected air conditioning system. Background technique [0002] The multi-connected air-conditioning system is mainly used in clustered buildings, no matter how bad the external environment is, it can provide users with a more comfortable indoor living and working environment. When running in the heating mode, the traditional multi-connected air-conditioning system sends hot air to the room through the air outlet installed on the ceiling. However, the hot air tends to concentrate on the part close to the ceiling, causing the indoor temperature to drop in steps from top to bottom. The head is hot and the feet are cold. At the same time, the multi-connected air-conditioning system increases the air pressure of the fan and the speed of the air supply to make the overall indoor temperature reach the set value. In the process, the indoor noise will incr...

AI Technical Summary

Problems solved by technology

[0005] It can be seen from the above-mentioned technical solution that when the existing air-cooled heat pump floor heating air-conditioning system operates in the heating mode, the heating hot water drawn by the outdoor unit and the indoor unit is a fixed value of 50°C, and the heating water is heated with the indoor air in the floor heating pipe. After the heat exchange, the 40°C water flows back to the indoor unit through the water pipe. During the whole heating process, the indoor ambient temperature can only be roughly adjusted by controlling the start and stop of the water pump through the controller, which cannot be precisely controlled according to the needs of the user. Furthermore, when there is no heating demand in the building, since there is heating water in the floor heating pipes, in order to prevent the floor heating pipes from freezing and cracking due to low temperature, it is necessary to power on the idle air-cooled heat pump floor heating and air-conditioning system to make the indoor units work normally, which will lead to serious accidents. power consumption

Images