Temperature control valve group of fan coil

Abstract

The invention relates to a front end temperature control valve group of a fan coil of a central air conditioner. The temperature control valve group of the fan coil comprises a tee side-entering areavalve, and a middle cavity communicates with an end opening of the lower side of the tee side-entering area valve; the middle cavity is internally provided with a bottom-passing top-stopping pressuredifferential valve core part, and the middle cavity communicates with the end opening of the upper side of a tee side-entering ball valve; a lower water inlet of the left end of the tee side-enteringball valve communicates with the middle cavity all the time; and an upper water outlet of the left end of the tee side-entering area valve communicates with the middle cavity all the time, and openingand closing of the upper water outlet and the upper water inlet are realized through an area valve core. According to the front end temperature control valve group of the fan coil of the central airconditioner, a pressure difference circulating reflux pipeline is achieved at the front end of the fan coil, and pressure balance of the pipeline is protected; in addition, an extending pipe part andthe tee side-entering ball valve adopt the split structure, and the telescopic distance adjusting function of the front end temperature control valve group meets the connecting problem of different fan coil joint spacings; and the connecting mode is changed, so that the whole assembly makes construction quick, convenient, safe and reliable, and the front end temperature control valve group has very good market promotion value.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a temperature control valve group at the front end of a fan coil unit of a central air conditioner. Background technique [0002] The fan coil unit is located at the end of the central air conditioner, and transports air with regulated temperature into the corresponding indoor space. In order to maintain the indoor air temperature, the cold and heat sources entering the fan coil unit can be switched or flow controlled. The commonly used solution is to connect a zone valve at the front end of the fan coil unit, and control the valve actuator acting on the zone valve through the indoor temperature control panel to realize the opening and cutting of the cold and heat sources of the pipeline to achieve temperature control. A regional valve similar to the prior art is shown in "A Two-way Regional Valve" with the announcement number CN 202149229 U. [0003] In construction p...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the prior art, the present invention provides a novel modularized fan coil temperature control valve group, which can solve the problems of excessive pressure changes in pipelines and pipeline blockage and backflow. At the same time, the product structure is simple and can be applied to fan coils with different distances interface, the overall structure is safer and more reliable, and the construction is convenient and flexible

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