Sunshade device for large solar heat collector

Abstract

The invention relates to a sunshade device for a large solar heat collector. The sunshade device is arranged above the heat collector and comprises a sunshade curtain, a rotating shaft, a rotating drum, a pulling rope, a line rolling wheel and fixed pulleys. The rotating drum is sheathed on the rotating shaft in a spacing way. The rotating drum and a group of fixed pulleys are respectively arranged at the two ends of the heat collector. The line rolling wheel is fixedly installed on the rotating shaft at the two ends of the rotating drum. One end of the sunshade curtain is connected and wound on the rotating drum and the other end of the sunshade curtain is connected with the pulling rope. After the direction of the pulling rope is turned through the fixed pulleys, the pulling rope is wound on the line rolling wheel. A hard pull rod is connected at the end part of the sunshade curtain. The number of the fixed pulleys is two. The two fixed pulleys are respectively arranged on the two sides of one end of the heat collector. At least one horizontal a support lever horizontally supporting the sunshade curtain is arranged below the sunshade curtain. Supports arranged at the two ends of the support lever are connected with the frame of the heat collector or the installing supports of the heat collector. The sunshade device is manually driven or driven by a motor. The invention has the advantages that the sunshade device can be used to shade sunshine to the solar heat collector, the price is low and the popularization and the application are easy.

Description

technical field [0001] The invention relates to a device capable of assisting in regulating the heating of a solar heat collector, so that the water temperature of a solar water heater can be adjusted, especially a sunshade device for a large-scale solar heat collector. Background technique [0002] A water heater with an electric heater is generally provided with a thermostat, and the temperature of the heating water is controlled through the thermostat. For example, we can set the heating temperature at about 75 degrees, just by adjusting the power of the electric heater or the heating time. And for solar water heater, because its water temperature is completely controlled by sunlight intensity and time, then can't directly adopt above-mentioned method to realize the control of water temperature. [0003] In summer, the sun is strong and the sunshine time is long, so the solar collector absorbs more heat, and the heated water temperature often reaches above 90 degrees. H...

AI Technical Summary

Problems solved by technology

High water temperature is not only prone to safety hazards, such as pipeline leaks and burns, but also puts forward higher requirements for sensors, heat collectors, pipelines, valves, etc. in the hot water system

In addition, higher water temperature is also prone to scale formation in pipelines and hot water storage tanks

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