Integrated solar water heater

Abstract

The invention discloses an integrated solar water heater. A hollow cavity is arranged in a heat insulating layer (6), the hollow cavity is internally provided with a heat storage water tank (5) of which the shape and the size are adapted to those of the hollow cavity, a window which is communicated with the hollow cavity is arranged at the side surface of the heat insulating layer (6), a light transmitting cover plate (1) is arranged at an outer end opening of the window, a vacuum heat collection cavity (2) is formed between the light transmitting cover plate (1) and the heat storage water tank (5), the inner part of the vacuum heat collection cavity (2) is in negative pressure, and a selective absorption coating is coated on a box plate of the heat storage water tank (5) facing towards the light transmitting cover plate (1). According to the integrated solar water heater disclosed by the invention, the panel-type heat collection, a vacuum heat insulating characteristic of the heat collection cavity and the pressure bearing operation are integrated into a whole, the structure is simple and compact, the installation is convenient and quick, and the production cost and the installation cost are greatly reduced as well. An integrated scheme is adopted by the invention, a heat transmitting process is reduced, the heat radiation area in unit volume is greatly reduced as well, and thus the light-heat transforming efficiency and the heat insulating effect are increased.

Description

technical field [0001] The invention belongs to the application industry of solar heat in the field of new energy, and in particular relates to an integrated solar water heater. Background technique [0002] At present, solar water heaters are mainly divided into two technical routes: one technical route is vacuum tube solar water heaters, and the other technical route is flat plate solar water heaters. Vacuum tube solar water heaters are most commonly used in all-glass vacuum tube solar water heaters. All-glass vacuum tube solar water heaters are mainly composed of all-glass vacuum heat collector tubes, hot water storage tanks, brackets and other accessories, which belong to my country's original technology. Under the current technical environment, this kind of solar water heater is widely accepted by the rural market due to its economy and good use effect, but its inherent shortcomings seriously limit the application prospects of this kind of solar water heater. The specif...

AI Technical Summary

Problems solved by technology

[0003] 1) It cannot operate under pressure. The common phenomenon is that the pressure is insufficient, the pressure of the hot and cold water at the mixed water end is inconsistent, and the use experience is poor;

[0004] 2) The safety is poor. There is no way to use the glass tempering process for the all-glass vacuum tube solar water heater, and the water tank is at the top of the water heater, with a high center of gravity. Generally, solar water heaters are installed at high places, so there are more potential safety hazards, especially in extreme weather environments It is more likely to have security problems;

[0005] 3) The structure is relatively complicated, so the failure rate is relatively high, among which vacuum tube explosion, pipeline blockage, solenoid valve failure, etc. often occur;

[0006] 4) The aesthetic feeling is extremely poor, the top is heavy and the bottom is light, and there is almost no way to coordinate with any kind of architecture;

[0007] 5) The installation is complicated, takes up a lot of space, and has high requirements for the installation environment;

[0008] 6) The packaging and transportation are inconvenient, easily damaged, and the transportation volume is large, which is a great waste of social resources

[0011] 1) A lot of materials are used, and the consumption of social resources is large. A pressurized balcony wall-mounted solar water heater needs to use a lot of copper and aluminum, as well as a lot of steel and many other materials;

[0012] 2) The installation is complicated and the installation cost is high. The balcony wall-mounted solar water heater needs to be installed with a water tank, a heat collector, and various complicated pipe fittings. The installation cost of an ordinary balcony wall-mounted solar water heater is 300-500 yuan;

[0013] 3) The cost is high, and the commercial value of promotion is insufficient. The market price of a pressure-bearing balcony wall-mounted solar water heater is about 5,000-8,000 yuan, which is difficult for ordinary consumers to accept, especially when facing the competition of gas. strong;

[0014] 4) The thermal efficiency is low. Due to structural design reasons, the heat dissipation area of ​​the system is very large, so a 100L balcony wall-mounted flat-panel solar water heater often has a collector area of ​​2 square meters;

[0015] 5) The problem of aesthetics still exists, because the hot water storage tank and the heat collector are separated, no matter where the water tank is installed, it will cause damage to the interior or exterior to a certain extent, and hard-to-handle hardware must be installed between the heat collector and the water tank. High-quality copper pipes have very high requirements on the technical level of installation, even if the installation level is relatively high, it is impossible to add points to the aesthetics of the building

[0017] 1) The combination of appearance and installation environment is very difficult, and the cost will be too high to have application value;

[0018] 2) The volume of the bottomless glass outer tube at both ends must be large enough to be useful, and the price of a large glass outer tube is very high, and the tempering process will become very difficult, or even impossible, if it is not tempered , when the glass outer tube is at a high place, safety will be a very big problem;

[0019] 3) How to achieve a feasible seal between the glass outer tube and the end caps at both ends will be a very challenging problem. Although inclusive bonding is recorded in the document, the sealing effect cannot be achieved at all in practical applications

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