A heating system with a four-way reversing valve and a three-way reversing valve

Abstract

The invention discloses a heating system with a four-way reversing valve and a three-way reversing valve. The system can realize thermal field coupling between solar energy and an air source heat pump system. Part of it can realize four different combinations of flow directions, and the special structure can be used to accurately locate the open state of the valve. Among them, the three-way reversing valve uses a cam and a return spring to realize the switching of the two flow directions; using these two different reversing valves can be The solar heat pump composite system realizes multiple different operation modes, fully considers the heat collection characteristics of solar collectors, the safety of working in a complex working environment, and the comprehensive energy efficiency improvement when the composite system is working, and reduces the number of valves and pipes in the system. The use of roads is beneficial to reduce the structure and cost of the system; the valve parts required for the normal operation of the system are significantly reduced, the operation reliability is good, and the difficulty of early construction is further reduced, and the operability of relevant technical personnel is high.

Description

technical field [0001] The invention relates to the field of solar energy and air energy heating, in particular to a heating system with a four-way reversing valve and a three-way reversing valve. Background technique [0002] In the western Sichuan region of my country, the altitude is mostly between 1000 and 4500m, and the climate is mainly severe cold and cold. It is a typical alpine region, and heating is an urgent problem to be solved locally. At the same time, this type of area is also the most abundant in solar energy resources, and the sunshine time is relatively long. However, it is difficult to guarantee the stability of the heating system due to the intermittent nature of solar energy itself when directly using solar energy to heat buildings. Therefore, in actual projects using solar heating, a set of auxiliary heat sources is often designed for the system, of which the complementary heating system of air source heat pumps assisting solar heating is the main one. ...

AI Technical Summary

Problems solved by technology

In order to realize the complementary process of the two heat sources, this kind of system needs to increase the pipeline connection and valves of the system, which makes the system complexity and initial investment cost significantly increased. The on-off process of the valve under different operating modes requires too much technical level of the user. High, and it is difficult to promote and apply in areas with poor economic and traffic conditions, which makes this energy-saving system have great limitations in the area of ​​use in my country

[0003] In order to realize the function of system mode transformation, at present, two-way valves, three-way valves and other valves that can switch the on-off state of the pipeline are considered in such systems, such as Chinese patent CN203240834U and Chinese patent CN206496511U, etc., but most of these valves can only To achieve the on-off of a single pipeline, in order to realize the conversion of complex modes, the coupling of multiple valves is usually required, and each valve installed in the system needs to be equipped with pipelines of different lengths, and the laying space needs to be considered.

Significantly increased system complexity and significantly increased investment costs

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